Product Knowledge
all
General FAQ
Product Knowledge
Custom Manufacturing
Quality Standard
Testing Report
Marketing Media

Product Knowledge

How to Choose a Poly Tarp (Polyethylene PE Tarpaulin)?

How to choose a Poly Tarp (Polyethylene Tarpaulin) Poly Tarps are one of the most popular tarps available to consumers due to the wide range of colors, sizes, weights/strength and price. This document will provide the information you need to select the right tarp for your application whether you are covering a canopy, carport, construction job, tent frame, outdoor event, yard project or wedding.   Poly Tarp Construction:   Poly Tarps are typically made of multiple layers with a woven mesh fabric sandwiched between two or more polyethylene sheets. (TARPMAX can make maximum 5 layers) Polyethylene is the same material used in cables, pipes and molded containers. It accounts for the largest portion of recycled plastics (recycle codes 1, 2 and 3). There are many other features that should be considered as well when evaluating your purchase. Consider the following list of tarp features before deciding on the right tarp for your application.   Ø  Tarp Thickness – This is the actual thickness of the tarp measured in mils (1/1000 of an inch). The larger the number, the thicker the tarp. Typical light weight blue tarps found in most retail or hardware stores are about 6 mils. If you are planning a heavy duty use, such as covering a carport, consider a heavy duty tarp at 11 to 12 mils or a super heavy duty tarp at 23 mils. Ø  Size – The specified sizes of poly tarps will not be the actual measured size. The sizes will vary from one manufacturer to another. Be sure to check the descriptions for the tarps. Tarps will typically be 4 to 6 inches smaller in each direction than the specified size. If a tarp is specified to be 10 feet the actual size will be 9 ft 6 in to 9 ft 8 in. This is due to the fact that tarps are cut to size and then hemmed at the edges. The hem uses up some of the original width leaving the tarp slightly smaller than specified. Ø  Lamination – Most poly tarps are constructed with a mesh fabric laminated between at least two layers of polyethylene film. Some heavy duty and super heavy duty tarps will have an additional layer of black polyethylene laminated in the center to prevent sun rays from penetrating the tarp. For some specially used, Tarpmax provide 5 layers lamination, it have strong water resistance ability. Ø  Mesh Fabric – The mesh fabric specification is the number of threads per square inch. An 8X8 mesh count would mean there are an average of 8 threads per inch in both the horizontal and vertical direction. Heavier duty tarps will have from 12 to 16 threads per inch. The thread weight may also be specified in denier. Denier is the weight in grams of 9000 ft of thread. The larger the denier the heavier the thread. Denier is not always specified but generally the heavier duty the tarp the larger the thread. Ø  Grommets – Grommets are metal rings lining a small hole at the edge of a tarp to accommodate the attachment of cords or bungees to the tarp. Spacing of grommets will vary from 18 inches to 36 inches depending on the grade of the tarp. Higher grade tarps will have the grommets spaced approximately 18 inches apart. Grommets may be made of aluminum (rust proof but not the strongest),brass (rust proof and strong), or plated steel (rust resistant and strong), and also plastic(Polycarbonate). The most durable and rustproof grommets for outdoor use are brass. Ø  Reinforcement – Tarps may have additional reinforcement around the perimeter of the tarp to help prevent ripping and tearing. There are four main types of reinforcement. o    Corner reinforcement – The higher the grade of tarp the more likely you will find heavy reinforcement in the corners. Corner reinforcement helps prevent tearing out of the corner grommets and will extend the life of your tarp. o    Perimeter rope – This is a rope which has been sewn inside the hem at the edge of the tarp to add reinforcement strength to the tarp. o    Hem – The hem is formed by folding the edge of the tarp back onto the tarp and then stitching the entire hemmed area. Most poly tarps have a hem. o    Grommet reinforcement – In addition to the corners some tarps have additional reinforcement at each grommet sometimes called a patch. This reinforcement is added to the hem area of the tarp and is typically only available in the heaviest duty tarps. Note that some heavy duty tarps may use additional reinforcement in the hem to improve grommet strength and will not have the perimeter rope. Ø  UV Treated – This is a chemical treatment done when manufacturing the tarp to help protect degradation of the poly tarp from UV rays. Ø  Waterproof – Most poly tarps are waterproof. The laminated film layers of polyethylene are naturally waterproof. However, some screen poly tarps designed for truck bed covers and sun screens are not waterproof. Ø  Mildew and Rot Resistant – Since polyethylene is water proof it also is resistant to rot and mildew. Ø  Flame Retardant – No poly tarp is flame-proof and should not be used near open flames or other heat sources. Some flame retardant tarps are available. If you are purchasing a flame retardant tarp, be sure you know and understand the specifications. Ø  Sun Blocking – Sun blocking tarps have an additional layer of black polyethylene and black mesh threads to form a light blocking tarp. Ø  Color – Tarps come in a wide range of colors all of which will not be covered here. Some tarps have special features that may be required for your application. o    Silver Sun Blocker – These specialty tarps are designed with black polyethylene and black mesh laminated between silver poly on one side and either a light or dark poly on the other depending on the manufacturer. The key feature of these tarps is that they block the sun light, and are cooler underneath in the summer. These tarps are great for canopies and carports. o    White – These tarps are great in that they provide some shade but allow some natural light to come through. Applications include wedding receptions, dining canopies and vendor booths. o    Clear – Clear poly tarps are great anywhere you need to have a lot of light but still need to have protection from the weather such as green houses. o   Blue, Green, Brown – These tarps have no special color features but are great utility tarps for use in general construction or landscape maintenance.   o   Orange, Red, Yellow - These brightly colored tarps are used where high visibility is preferred.  Poly Tarp Comparison Table: This table is intended to provide as a quick comparison of typical tarp features. It is not based on any know document or specification but was compiled from many online sources. Use this as a guideline not as an actual specification.    Light weight Medium Heavy duty Super Heavy     Weight   Duty   GSM 65-90gsm 95-110gsm 120-200gsm 260gsm Above Thickness 5-6 mil 9-10 mil 11-12 mil 23–24 mil Laminate 3 3 3-4 3-4 layers         Mesh Count 8 x 8 / sq in. 10 x 10 / sq in. 12 to 14 / sq in. 16x16 / sq in. Mesh Denier 800 1000 1200   Weight (per ~2 to 3 oz. ~ 4.5 oz. ~6 oz. ~11 to 12 oz. sq. yard)         Grommet ~18-36 inches ~18-36 inches ~18 inches ~18 inches spacing         Grommet Varies Varies Brass Brass type         Rope Available Available Available Hem reinforced UV Treated Available Available Available Available Waterproof Yes Yes Yes Yes Rot resistant Yes Yes Yes Yes Mildew Yes Yes Yes Yes resistant         Uses            

What is Polytetrafluoroethylene (PTFE) Fabric: Properties, How its Made and Where

White PTFE Fiberglass FabricWhat Is PTFE Fabric?PTFE stands for polytetrafluoroethylene, which is a type of synthetic polymer called a fluoropolymer. A fluoropolymer is a type of polymer that consists of carbon and fluorine molecules, and the main constituent of polytetrafluoroethylene is tetrafluoroethylene (TFE), which is a member of the fluorocarbon family.The most notable attribute of PTFE is that, due to its low dielectric constant, it is entirely hydrophobic, which means that water cannot pass through this synthetic material. This attribute has made PTFE highly popular in any application where the blockage of water is desired on a large or small scale.PTFE was not purposefully created; rather, it was discovered by accident by a DuPont Corporation scientist named Dr. Roy Plunkett in 1938. At the time, DuPont was the world leader in the development of synthetic textiles along with a number of other synthetic materials, and Plunkett made polytetrafluoroethylene in the process of trying to develop a new form of chlorofluorocarbon refrigerant.In addition, PTFE has an incredibly high melting point. According to Chemours, PTFE can resist temperatures of up to 600 degrees Kelvin, which is the equivalent of 327 degrees Celsius or 620 degrees Fahrenheit. Polytetrafluoroethylene also has one of the lowest friction coefficients of any polymer, which means that it is slippery to the touch and easy to clean. Furthermore, PTFE has high abrasion resistance, and it has high tensile strength.PTFE Lifetime ThreadAn unexpected reaction in the refrigerant development process resulted in the appearance of a white, slippery substance on the inside of the bottle Plunkett was using in his experiment. Upon analysis, the impressive attributes of this accidental creation were discovered, and a joint venture of General Motors and DuPont called Kinetic Chemicals patented PTFE in 1941.In 1945, Kinetic Chemicals registered polytetrafluoroethylene under the trademark Teflon, and one of the first uses of this polymer was as a valve and seal coating material in uranium enrichment applications as part of the Manhattan Project. In the mid-1950s, the benefits of PTFE as a non-stick coating on cookware were discovered. Due to its high heat resistance and hydrophobic qualities, many companies immediately leaped on the prospect of using Teflon as a cookware coating.ePTFESince the early days of its production, PTFE has been used as an insulator in electrical wiring. For instance, most types of coaxial cable use PTFE, and in the late 1950s, a DuPont employee named Bill Gore became interested in the potential applications of polytetrafluoroethylene in the computing industry.With the help of his son, Bob, Bill Gore developed a type of computer wiring called Multi-Tet. Within just a few years, Multi-Tet became widely used around the country; this cable was even used in the modules of the Apollo 11 spacecraft.Bob Gore, however, realized that PTFE had even greater potential. As he started to experiment with expanding PTFE, he noticed that this material became much more flexible and lightweight the more air it admitted. Bob’s experiments resulted in the discovery of expanded polytetrafluoroethylene ePTFE, which is now used in dozens of industrial and consumer applications.Like normal polytetrafluoroethylene, ePTFE is highly heat-resistant and hydrophobic, but it is also easy to shape into a thin, fabric-like material that can be deployed in many more applications than traditional PTFE, which is more rigid.GORE-TEXAs its name suggests, GORE-TEX is another creation of the Gore family. In 1970, Robert Gore started applying for a series of patents for ePTFE, and in 1976, W.L. Gore started marketing GORE-TEX as a material for outdoor enthusiasts.The hydrophobic properties of ePTFE make it an ideal material for rain jackets, and this fabric is also windproof while remaining somewhat breathable. Since the 1970s, GORE-TEX has exploded in popularity, and it is now considered the premier material in a variety of different waterproof garments.While PTFE is inherently impermeable by water, since GORE-TEX is made from stretched ePTFE, it has a microporous structure that allows the passage of water when it is in a gaseous form. When your body sweats, for instance, it emits steam, and this steam can freely move through GORE-TEX. Liquid water in the form of rain, however, cannot pass through this waterproof fabric.How Is PTFE Fabric Made?PTFE is polymerized from tetrafluoroethylene (TFE). In turn, TFE is created by combining fluorspar, hydrofluoric acid, and chloroform. To create TFE, these three components are combined under high temperatures through a process called pyrolysis. The resulting substance is in a gaseous form, and it is converted into a liquid under high pressure in low temperatures.PTFE Filter Mesh FabricsTFE is highly volatile, so it isn't commonly transported. Instead, most PTFE manufacturers make their own TFE on site. In the process of creating TFE, small amounts of a number of different chemicals, such as disuccinic acid and ammonium persulfate, may be used as initiators, and large amounts of water are also used in the PTFE production process.Once TFE has been acquired, PTFE may be made in a variety of different ways, and most manufacturers of this type of fabric have production process trade secrets that they do not share. However, the various production processes used to make PTFE can all be sorted into to basic categories: suspension polymerization and dispersion polymerization.Suspension PolymerizationIn this process, a reaction chamber is filled with purified water and an initiator chemical, and liquid PTFE is then introduced into the chamber. As soon as liquid PTFE comes in contact with the initiator, it starts to polymerize, and it forms solid grains that remain on the surface of the water. Throughout the process, the reaction chamber is moved back and forth to facilitate the circulation of water as a coolant.Once a certain weight of PTFE is reached, the process is stopped, and the water is drained from the reaction chamber. The resulting PTFE grains are then dried and pulverized with a mill. The resulting substance has a flour-like consistency, and these powdery grains are then made into larger granules since PTFE is hard to work with in this form. The resulting pellets are dried in an oven.PTFE Staple FiberOnce the pellets are dry, they can be made into a variety of different forms in the factory, or they may be shipped off in pre-made cylinders called billets. To make PTFE into a certain shape, it is heated above 680 degrees Fahrenheit (360 degrees Celsius) in an oven, at which point it takes on a gel-like consistency.Dispersion PolymerizationThis method does not result in solid grains of PTFE. Instead, it results in a liquified form of this substance that can only be used in coating or finish applications. As in the suspension polymerization method, water, an initiator chemical, and liquid TFE are introduced into a reaction chamber. Instead of being vigorously shaken, however, the reaction chamber is only lightly agitated, which results in tiny beads of PTFE.Once these beads have formed, a certain amount of water is removed, and a milky substance is formed. While this liquified substance is usually kept in its liquid form, it can also be dried into a fine powder.Production of ePTFEWhile Bob Gore came upon the idea for stretched PTFE early in his career working with his father, he spent endless fruitless hours trying to determine how to stretch this polymer before he created this new technology for the first time.Bob started by heating PTFE to a high temperature and pulling it slowly from both ends. However, these rods invariably broke. In exasperation, Bob finally tried pulling a rod of PTFE as fast as he could after it had been heated. Incredibly, the rod expanded to 10 times its normal size.All ePTFE made today, whether it's made by Gore & Associates, Inc. or a different company, is made with this seemingly simplistic method. By heating and rapidly stretching PTFE, this substance takes on unique properties that give it completely different performance characteristics than formal PTFE. In most cases, this substance is made with industrial ovens and stretching machines.Before they can be sold, PTFE and ePTFE products must meet certain quality control standards. For instance, dispersion PTFE is tested for viscosity and gravity parameters, and if PTFE manufacturers want to market their products as Teflon, they must adhere to certain standards laid down by DuPont since Teflon is a registered trademark of this corporation.How Is PTFE Fabric Used?PTFE is used in a wide variety of applications. Nearly 50 percent of the world's PTFE is used in the computer industry since it has high dielectric strength. Since its initial use in the Apollo missions, NASA has used PTFE in many different manned and unmanned space missions, and this substance is also used to make insulation for wires in extreme climates like Antarctica.Since it has a low coefficient of friction, PTFE is also used in bearings, bushing, gears, seals, and gaskets, and it is commonly used in the production of carbon fiber composites in the aerospace industry. The UV-resistance of PTFE makes it popular in outdoor industrial applications, and PTFE is also commonly used to coat the outsides of flexible architectural materials. For instance, the roof of the Minneapolis Metrodome is covered with PTFE coating to make this structure UV-resistant and easy to clean.PTFE is used in dozens of other industrial and scientific applications, but the context in which consumers have most commonly come into contact with this polymer is in non-stick pans. While Teflon is a registered trademark of DuPont, a variety of other companies have made similar coatings, and most types of cookware on the market now have Teflon coatings to make them easier to use and clean. Teflon and similar substances have also been used in such diverse applications as gaming mice and 3D printers to help reduce friction.In the form of GORE-TEX and similar substances, ePTFE is used in a wide variety of different types of apparel. As a general rule of thumb, if a flexible outdoor garment, shoe, or accessory is listed as waterproof, it's most likely that this product incorporates a layer of GORE-TEX or a similar ePTFE fiber. The GORE-TEX in ski jackets and other types of outdoor apparel outperforms other forms of waterproofing, and this substance is even used in many types of hiking shoes to help keep the feet of outdoor enthusiasts clean and dry while on long hikes.ePTFE is also used in a wide variety of medical applications. For instance, this fabric is used as a filtration membrane in drug delivery, urine collection, and laparoscopic surgery applications, and it is also used to make coatings for intravascular medical devices, which are types of devices that go inside of veins and arteries. ePTFE may also be used to coat medical implants that are designed for permanent installation to protect these devices from breakdown due to contact with bodily fluids.Due to its resistance to high temperatures, PTFE is often used as a coating for the gear and garments that are worn by first responders such as firefighters. Firefighting gear may also contain layers of ePTFE to improve heat resistance and improve breathability. Furthermore, PTFE and ePTFE are used in gear worn by members of military and paramilitary organizations. PTFE is even used to make consumer items like guitar strings.Where Is PTFE Fabric Produced?China is the largest producer of PTFE. In 2016, this Asian nation exported PTFE material worth $154 million, and the USA is China's main competitor since it produced $118 million of PTFE in the same year. After the USA and China, Germany, the Netherlands, Italy, and Japan are the next biggest exporters of PTFE.Despite producing this substance in large quantities, the USA is also the largest importer of PTFE. This country imported $158 million of PTFE in 2016, and it was followed by Germany at $99 million and Italy at $84 million. While DuPont holds the trademark to Teflon, it allows other manufacturers to make this substance as long as they meet certain manufacturing guidelines.How Much Does PTFE Fabric Cost?While the price of PTFE fluctuates substantially, the average cost of this product is approximately $8,800-$16,000 per ton. The price of PTFE also varies by country; for instance, exporting PTFE to countries like China and Germany generally costs somewhat more than exporting this product to the United States.To the end consumer, types of PTFE used in garments, such as GORE-TEX, are not significantly more expensive than other types of raingear. However, the GORE-TEX brand carries significant recognition around the world, so garments that contain this substance may be marketed at higher price points. For instance, a GORE-TEX jacket for men costs an average of $70-$200.China Ptfe Membrane FabricConsumers don't generally have any use for ePTFE when it isn't incorporated into garments, so prices of this substance by the sheet aren't usually relevant in the consumer market. While cookware containing PTFE branded as Teflon or another trade name may be slightly more expensive than other types of cookware, this price discrepancy isn't usually very pronounced.What Different Types of PTFE Fabric Are There?In its original form, PTFE is a rigid substance that cannot be made into flexible, fabric-like materials. However, this substance can be added to other types of materials to make a fabric-like substance, and various types of fabrics can also be made with ePTFE, which is the stretched form of this linear polymer.1. PTFE FiberglassFlexible fiberglass sheets can be coated with PTFE to improve their durability and weather resistance. In most applications in which flexible fiberglass is used outdoors, this material is coated with PTFE. This coating makes fiberglass suitable for the permanent, tent-like roofs that stretch over dozens of stadiums and business centers around the world. While PTFE fiberglass doesn't last forever, it does last for about 30 years before it must be replaced.2. PTFE-Coated GarmentsWhile normal PTFE isn't used to make garments, it is used to coat garments made from other materials. When coated with PTFE, garments have decreased friction, which makes them easier to clean. In addition, this coating makes garments resistant to stains, and it acts as a flame retardant. Therefore, PTFE is commonly used to coat special types of clothing such as uniforms and ceremonial robes.3. ePTFEIn some cases, ePTFE fabric may be used in outdoor architectural applications instead of PTFE-coated fiberglass. Pure ePTFE has all of the benefits of PTFE fiberglass, but it also lasts longer than other types of flexible outdoor architectural materials. One of the most notable benefits of this architectural material is its light transmission; according to Birdair, ePTFE allows 40 percent more light transmission as compared to PVC.ePTFE may also be used in garments. While this substance is most commonly branded as GORE-TEX, when it is made by independent manufacturers, it is usually labeled simply as ePTFE or with another trade name. Whether or not ePTFE is labeled as GORE-TEX, it has the same waterproofing and breathability benefits.4. GORE-TEXGORE-TEX is a registered brand name of the W.L. Gore corporation, and it is the most commonly used type of ePTFE in consumer garments. While GORE-TEX may also be used in military and industrial applications, it is most commonly used as a waterproof lining in rain jackets, ski jackets, gloves, boots, ski pants, and a wide variety of other apparel applications in which increased airflow and high porosity are desired.How Does PTFE Fabric Impact the Environment?The production of PTFE results in a variety of toxic byproducts. For instance, hydrofluoric acid is released in the production of this substance, and this byproduct is highly toxic. Hydrofluoric acid causes serious tissue damage if it comes into contact with either human or animal tissue, and it also causes environmental damage if it is not disposed of properly.PTFE production also releases carbon dioxide into the atmosphere, which has been identified as a greenhouse gas. The presence of these chemicals can pose serious harm to workers if production areas are not properly ventilated, and bodily harm through exposure to these substances is so widespread that a specific disease has been named to refer to the symptoms of hydrofluoric acid and carbon dioxide exposure in PTFE production plants: polymer fume fever. Some of the waste substances produced in PTFE production can be reused, but since these substances are now widely available, there isn't as much of an incentive for factories to retain these waste products for new products.A wide body of research has been conducted to determine the effects of PTFE production on the environment, and the National Institutes of Health (NIH) have compiled the results in a comprehensive toxicity dossier. PTFE production involves the release of hydrofluorocarbons, and while these substances don't destroy the ozone layer like chlorofluorocarbons, they have other toxic effects when introduced into the environment.In addition, the thermolysis (breakdown by heat) of PTFE releases a substance called trifluoroacetate, which is highly toxic to humans and animals. This substance accumulates in the water supplies of urban environments, and it has even been shown to adversely affect the growth of root matter in plants.Currently, the best way to dispose of PTFE and related substances is in landfills since incinerating this substance releases hydrogen chloride and other toxic substances into the atmosphere. However, if landfills are not properly designed to prevent leaching into the surrounding soil, trifluoroacetate and other substances could contaminate the environment surrounding these designated waste disposal areas.While PTFE does leach toxic contaminants into the environment, this substance is not biodegradable, which means that it does not break down due to natural processes. Therefore, garments made from ePTFE or GORE-TEX will remain in the environment for thousands of years after their date of manufacture.PTFE Fabric Certifications AvailableSince PTFE and ePTFE are fully synthetic compounds that are made from all-new materials, they are not eligible for recycled or organic certification. However, they are eligible for various types of certification from organizations like the International Organization for Standardization (ISO). For instance, good PTFE or ePTFE fiber will come with ISO 9001 certification, and it will also have ISO 13485 certification if it is being used in medical devices. Furthermore, these substances may be eligible for ISO 14001 certification if their production meets certain environmental standards, and PTFE or ePTFE may also be eligible for OHSAS 18001 certification if facilities producing these substances meet certain workplace safety requirements.

What is Polypropylene Fabric? and How Is Polypropylene Fabric Made?

Table of ContentWhat Is Polypropylene Fabric?How Is Polypropylene Fabric Made?How Is Polypropylene Fabric Used?Where Is Polypropylene Fabric Produced?How Much Does Polypropylene Fabric Cost?What Different Types of Polypropylene Fabric Are There?How Does Polypropylene Fabric Impact the Environment?Polypropylene Fabric Certifications AvailableWhat Is Polypropylene Fabric?Polypropylene fabric is a term used to describe any textile product that is derived from the thermoplastic polymer polypropylene. This type of plastic is part of the polyolefin group, and it is non-polar and partially crystalline. Next to polyethylene, polypropylene is the second-most commonly produced plastic in the world, and it is more commonly used in packaging, straws, and other types of consumer and industrial goods than it is in textile production.This type of plastic was originally developed by the American corporation Phillips Petroleum in 1951. Chemists Robert Banks and J. Paul Hogan were attempting to derive gasoline from propylene, and they accidentally created polypropylene. While this experiment was deemed a failure, it was quickly recognized that this new compound has the potential to be on par with polyethylene in many applications.It wasn't until 1957, however, that polypropylene was made into a substance suitable for mass production. In 1954, the Italian chemist Giulio Natta and his German colleague succeeded in forming this substance into an isotactic polymer, and the Italian corporation Montecatini quickly started producing this substance for commercial and consumer use.Polypropylene was originally marketed under the name "Moplen," and this name is still a registered trademark of the LyondellBasell corporation. However, it is much more common to find this substance referred to as polypropylene or "polypro" for short.As the use of polypropylene became more and more popular in a number of consumer and industrial applications, it was gradually discovered that this type of plastic also showed potential as a textile. Polypropylene fabric is a nonwoven textile, which means that it is made directly from a material without any need for spinning of weaving. The main benefit of polypropylene as a fabric is its moisture transfer abilities; this textile cannot absorb any moisture, and instead, moisture passes through polypropylene fabric entirely.This attribute allows moisture that is exuded while wearing a polypropylene garment to evaporate much more quickly than it would with a moisture-retaining garment. Therefore, this fabric is popular in textiles that are worn close to the skin. However, polypro has a tendency to absorb and retain body odors when it is used for undergarments, and it also melts at relatively low temperatures. Molten polypro fabric can cause serious burns, and this issue also makes it impossible to wash this fabric at high temperatures.Polypropylene fabric is one of the lightest synthetic fibers in existence, and it is incredibly resistant to most acids and alkalis. In addition, the thermal conductivity of this substance is lower than that of most synthetic fibers, which means that it is ideally suited for cold weather wear.Furthermore, this fabric is highly resistant to abrasion, and it also resists insects and other pests. Due to its notable thermoplastic qualities, it's easy to mold polypro plastic into various shapes and forms, and it can be reformed through melting. This plastic is also not very susceptible to stress cracking.However, polypro is notoriously hard to dye after it is manufactured, and it is also difficult to shape this fabric into different textures. This fabric is susceptible to UV damage, and it does not adhere well to latex or epoxies. Like every other synthetic textile, polypropylene fabric also has a significantly negative impact on the environment.How Is Polypropylene Fabric Made?Like most types of plastics, polypro is made from substances that are derived from hydrocarbon fuels like petroleum oil. First, the monomer propylene is extracted from crude oil in gas form, and this monomer is then subjected to a process called chain-growth polymerization to create the polymer polypropylene.Once a large number of propylene monomers are strung together, a solid plastic material is formed. To make a usable textile, polypropylene resin must be mixed with a wide variety of plasticizers, stabilizers, and fillers. These additives are introduced into molten polypro, and once the desired substance is acquired, this plastic may be allowed to cool into bricks or pellets.These pellets or bricks are then transferred to a textile factory, and they are remelted. In most cases, this polypropylene is then formed into sheets, or it may be allowed to cool in molds. If sheets are created, these thin fibers are then cut into the desired shape and sewn or glued to create garments or diapers. A variety of different manufacturing methods are used to form polypropylene into non-apparel products.How Is Polypropylene Fabric Used?Polypro fabric is commonly used in clothing applications in which moisture transfer is desired. For instance, this type of plastic is commonly used to make top sheets for diapers, which are the components of diapers that make direct contact with skin. By using polypropylene for this diaper component, it is assured that no moisture will remain in contact with a baby's skin, which reduces the likelihood of rashes forming.This nonwoven fabric's moisture-transferring properties have also made it a popular textile for cold weather gear. For instance, this synthetic was used to make the underwear and undershirts that were used in the first generation of the U.S. Army's Extended Cold Weather Clothing System (ECWCS). It was found that garments made from this fabric improved the comfort of soldiers in cold-weather conditions, but problems with polypro fabrics have caused the United States military to switch to the latest generation of polyester textiles for their Generation II and Generation III ECWCS systems.In some cases, polypropylene fabric may also be used to make sportswear, but a number of issues with this type of plastic have made newer versions of polyester more popular for this application. While this fabric's moisture-transferring properties are highly desirable for sportswear, the inability to wash this fabric with hot water makes it hard to remove odors from polypropylene sportswear. In addition, this textile's susceptibility to UV damage makes it a poor choice for any type of outerwear.Beyond the world of apparel, polypropylene plastic is used in thousands of different applications. One of the most famous uses of this substance is in drinking straws; while straws were originally made from paper, polypropylene is now the preferred material for this application. This plastic is also used to make ropes, food labels, food packaging, sunglasses, and a variety of different types of bags.Where Is Polypropylene Fabric Produced?China is currently the biggest exporter of polypropylene products. In 2016, factories in this country produced a volume of polypro plastics valued at $5.9 billion, and it's projected that this trajectory will stay steady for the foreseeable future.A great deal of this substance is also made in Germany; this country produced approximately $2.5 billion of polypropylene in 2016, and Italy, France, Mexico, and Belgium are also significant producers of this substance. In 2016, the United States produced $1.1 billion in polypro products.The biggest player in the international polypropylene production industry is LyondellBasell. This company is incorporated in the Netherlands, and it has bases of operation in Houston and London.The runner-up in this industry is Sinopec Group, which is based in Beijing, and PetroChina Group, which is also based in Beijing. The top 10 producers of this substance account for 55 percent of the total production of polypropylene worldwide.Polypropylene is processed into fabrics all over the world. The biggest producer of finished polypro fabrics is China, and this type of textile is also sewn into garments and other types of fabrics in India, Pakistan, Indonesia, and a number of other countries.How Much Does Polypropylene Fabric Cost?Since polypro is one of the most widely produced types of plastic, it is generally quite inexpensive in bulk. A large number of different major factories compete with each other to capture the world's plastics market, and this competition drives prices low.However, polypropylene fabric may be relatively expensive. The main reason for this increased price is lack of demand; while polypropylene fabric used to be used to make thermal undergarments relatively frequently, recent advances in the production of polyester have made this type of fabric largely obsolete. Therefore, this type of fabric costs more to textile producers than similar synthetic fabrics, such as polyester, and this increased cost is generally passed on to the end consumer.It's important to clarify, however, that this increased cost only applies to polypropylene fabric that is designed to be made into apparel. Various types of polypropylene fabric that are not suited for apparel are marketed at relatively low prices, and they are generally quite inexpensive. These fabrics come in a variety of different colors and textures.What Different Types of Polypropylene Fabric Are There?A variety of different additives can be added to polypro while it's in its liquid state to alter the attributes of this material. In addition, there are two major types of this plastic:• Homopolymer polypropylene: Polypro plastic is considered to be homopolymer when it is in its original state without any additives. This type of polypro plastic is not generally considered to be a good material for fabric.• Copolymer polypropylene: Most types of polypropylene fabrics are copolymer. This type of polypro plastic is further split into block copolymer polypropylene and random copolymer polypropylene. The co-monomer units in the block form of this plastic are arranged in regular square patterns, but the co-monomer units in the random form are arranged in relatively random patterns. Either block or random polypropylene is suited for fabric applications, but block polypro plastic is more commonly used.How Does Polypropylene Fabric Impact the Environment?The production and use of polypropylene has a decidedly negative impact on the environment. Since polypro plastic is derived from hydrocarbon fuels, the manufacture of this substance is inherently unsustainable; fossil fuels are limited resources, and a great deal of energy is expended to acquire these substances.In addition, a significant amount of waste is produced in the process of making polypropylene. In some cases, the excess hydrocarbon fuels that are left over after the propylene extraction process may be reused for other purposes, but they may also be discarded, which causes a negative environmental impact.Various toxic chemicals are also used in the polypropylene production process; the contaminated water and air that are emitted from polypro production plants enter the ecosystem and negatively affect the surrounding population, and the chemicals released in the production of this type of plastic may also affect factory workers who are exposed to it. It's also worth pointing out that a scientific study found that polypropylene plastics used in food packaging release bioactive chemicals.Once it is discarded by the end consumer, polypro plastic stays in the environment for a very long time. It takes hundreds of years for this substance to decompose, so it is not considered to be biodegradable. Unlike some other synthetic materials, however, most polypro introduced into the environment will break down within a thousand years or less.Certain companies make additives for polypropylene that make this plastic biodegradable. However, these additives are not used for polypro fabrics.This factor means that every piece of polypropylene fabric that is produced will remain in the ecosystem for hundreds of years before it is broken down. Many areas around the developed and developing world are currently encountering significant issues regarding the pollution created by plastics, and some nations are approaching this issue head-on; for instance, a variety of different businesses and cities around the United States have recently issued bans on plastic straws in an attempt to reduce pollution.Polypropylene Fabric Certifications AvailableDepending on how it is made, polypro fabric may be eligible for ISO 9001 certification, which is provided by the International Organization for Standardization (ISO). This organization may also offer ISO 13485 certification for polypropylene products that are used for medical purposes.Furthermore, ISO offers another certification program specifically for polypropylene. Known as ISO 19069-1:2015, this standard tests for the tensility, impact resistance, and melt mass-flow rate of polypropylene to make sure that it is in compliance with basic criteria. This type of plastic may also be eligible for certification from the American National Standards Institute (ANSI) or NSF International.About the author:Boris Hodakel is the founder and CEO of Sewport - an online marketplace connecting brands and manufacturers, former founder of various clothing manufacturing services. He is passionate about e-commerce, marketing and production digitisation. Connect with Boris on LinkedIn.

Woven Polypropylene Bags: The Complete Guide

The following content will provide the answers from our knowledge and practical experiences to these questions:1. What is woven polypropylene bags?2. Why woven polypropylene suitable for packaging use?3. Different names of woven polypropylene bags4. Properties of woven polypropylene bags5. Applications of woven polypropylene bags6. Is woven polypropylene an eco-friendly material?7. Can woven polypropylene bags printable?8. Glossary of woven polypropylene bags9. How to customize bags of woven polypropylene?10. HS code of woven polypropylene bags11. 2 typical use of woven polypropylene bags12. Do you supply more than just woven polypropylene bags?What is woven polypropylene bags?Let’s break this question into three sections.1. wovenWoven, or weaving is a method by many threads or tapes woven in two directions (warp and weft), to form a fabric for plastic industry needs.In the plastic woven industry, with a plastic film is drawn into filaments, woven into fabric/sheet/cloth. It can be into a tarpaulin, woven bags, container bags, tons of bags, geotextile fabric, color of the cloth and so on.Woven or weaving by industry:Plastic film into a fiber, it should belong to the plastic industry;Filament weaving process from the plastic into view, it should belong to the textile industry.Thus, it is both plastic and textile industries marriage of the body.Woven fabric cloth usually frays at the edges, unless techniques are used to counter it, such as the use of pinking shears or hemming.2. woven polypropylenePolypropylene, which is also known as PP for short name, is one kind of thermoplastic resin material that produced by the polymerization of propylene.Woven polypropylene is polypropylene strips/threads that have been woven in two directions (warp and weft) to creat a light, but strong and heavy duty material.3. woven polypropylene bagsBuild with circular woven polypropylene fabric, one side sewn as the bottom, leave the other side open, the simplest woven polypropylene bags is done.Why woven polypropylene suitable for packaging use?High Melt Index with low DensityNon-toxicNon-staining100% reusable and durableEasy to clean and anti bacterialLight in weight with lowest densitybreathable or water proof with a laminated filmEasy to produce, assembly and an economic materialExcellent resistance to stress and high resistant to crackingHigh operational temperatures with a melting point of 167°CResistant to most alkalis and acid, organic solvents, degreasing agentsDifferent names of woven polypropylene bags1. woven polypropylene bags = woven polypropylene sacksBags or sacks is appropriate to describe something in a wide range of packaging types.A bag is, a flexible container with a single opening.A sack is, a bag made of paper or plastic for holding.Sack is just one type of Bag, especially applying to the packaging industry. In fact, most countries use BAG more frequently than sack. There will be differences but little, so as far as we know, woven polypropylene bags = woven polypropylene sacks.2. Short names of woven polypropylene bagspp bagswpp bagswoven bagswoven pp bagswoven poly bags3. Use names of woven polypropylene bagssalt bagsrice bagscoal bagsflour bagssandbagsfeed bagsseed bagscement bagsfertilizer bagsfirewood bagschemical bags…The fact is different names used in different countries and regions. More bag details needed if we came to a conslusion that it’s the woven polypropylene bag.Properties of woven polypropylene bagsThe properties of woven polypropylene bags come from two aspects:1. Properties of polypropylene2. Properties of woven methodPolypropylene has qualities of rot/flame/chemical resistance, and woven method means strong yet breath. Combining together with other factors, we got 9 facts of woven polypropylene bags.· Woven Polypropylene Bags are reusable.· Woven Polypropylene Bags don’t degrade when wet.· Woven Polypropylene Bags are naturally resistant to tearing.· Woven Polypropylene Bags can be printed on one side or both sides.· Woven Polypropylene Bags allow the contents to breath until air dried.· Woven Polypropylene Bags have better burst strength than plastic bags.· Woven Polypropylene Bags can be laminated as the vapor and moisture barrier.· Woven Polypropylene Bags can be partially transparent for outstanding presentation.· Woven Polypropylene Bags can be side gusseted to accommodate bulky items easily.Applications of woven polypropylene bags1. Agricultural product packagingPP woven bags are largely used in storing and transporting agricultural products such as aquatic products, feeds, fruits, vegetables, etc. PP woven bags used in the agricultural industry typically include feed PP woven bags, chemical PP woven bags, fertilizer PP woven bags, vegetable woven bags and fruit mesh bags.2. Food packagingPP woven bags are increasingly used to pack food. Common food woven bags include rice PP woven bags, flour PP woven bags, maize woven bags, etc.3. Geotechnical engineeringPP woven fabrics are extensively used in the construction of irrigation works, roads, railways, ports, mines, buildings, and more. Having the functions of filtering, draining, isolation and anti-seepage, PP woven fabrics are one of the most popular geosynthetics.4. Tourism and transportTemporary tents, sunshades, and various travel bags can be made by PP woven fabrics. In addition, plastic woven fabrics can also be used as fences and screens during construction.5. Daily necessitiesPP woven bags are almost used by everyone, whether workers, farmers, or cargo agents etc. You can find plastic woven products (such as shopping bags, logistics bags etc.) in stores, warehouses and houses, nearly everywhere.6. Flood control productsWoven bags play an important role in reducing or preventing the detrimental effects of flood waters. They are widely used in the construction of dams, river banks, roads and railways. Woven polypropylene sandbags are widely used all over the world.7. Special woven bagsSpecial woven bags are used to serve some special purposes. For example, UV resistant woven bags have UV protection and anti-aging function, allowing them a longer lifespan in the sunlight. Woven polypropylene tube with UV protection can be used for earthbag buildings.Is woven polypropylene an eco-friendly material?Yes, it’s an eco-friendly fabric. It can be melted down, recycled and made into other products. Besides, they last long enough and can be used many times to reduce your demand from single-use products.Woven polypropylene bag can last between four and five years if proper use.Can woven polypropylene bags printable?Yes, very. Woven polypropylene is a great fabric to print on. You can choose normal easy printing such as simple brand text and image with three colors, also full color printing with bopp lamination.Bopp laminated woven polypropylene bags is best suited to graphic and digitally created art work. Perfect for 100% print coverage with no limit to creativity!Glossary of woven polypropylene bagsPolypropylene – A type of polymer used in producing monofilament and multifilament yarns and threads. It is recyclable and is used as our standard fabric.Yarn / Tape – Extruded PP sheet, slit and stretched in annealing ovens to form part of the woven fabric for the bag.Warp – Yarn or tape in a fabric, oriented perpendicular to the Weft yarn during weaving. This would go from top to bottom in the body fabric.Weft – Yarn or tape in a fabric, orientated perpendicular to the Warp yarn during weaving. This would go from left to right in the body fabric.Woven – Combined with many polypropylene yarns or tapes in two directions (warp and weft) to form fabric.Denier – The weight of yarn in grams per 9,000 meters.Fabric Mesh – The measure of the density of the fabric weave, measured as the number of yarns per inch in both the Warp and Weft directions. Like 10×10 mesh.Fabric Weight – The measure of the fabric weight in ounces per square yard or grams per 100 square centimeters.Stitches per Inch – A sewing specification requiring “X” number of stitches per inch. Like 4 stitches per inch.Seam – A sew line made by the attachment / assembly of two or more components.Top Hemmed / Hemming – A fold and sew operation which prevents fraying of cut fabric. This also provides a clean finish to the woven polypropylene bag. It may be either towards the inside or outside of the bag.Body Fabric – The tubular portion of a seamless or circular woven bag.Breathable Fabric / Bags – Uncoated or non-laminated fabric / bags.Circular Woven Bag – Also called a tubular bag, it is made from fabric woven on a circular loom, which is then cut to the proper length for a specified bag height, thereby eliminating the seams on each of the bag’s sides.Coated Fabric / Bags – Fabric or bag which is coated / laminated with Polypropylene (PP) to prevent moisture intrusion or sifting of the contents. Also called Non-breathable or Laminated fabric / bags.Bag Size – width and longth. Longth dimension of the woven polypropylene bag measured from the Top Seam to the Bottom Seam.Printing Design – A drawing supplied by the plant for the prospective customer’s review and approval, prior to production, in order to assure compliance with the customer’s needs and expectations.UV Stabilized – A feature of an unit of woven polypropylene bag that provides protection from prolonged exposure to the sun’s degrading UV rays. A pigment is added to the resin prior to extrusion of the yarns to provide this protection.How to customize bags of woven polypropylene?1. Is this a new project or an existing one?2. What are you trying to do?3. What are you packaging? (grain, beans, chemicals, etc)4. How many pounds or kilograms do you want/require?5. What size do you need?6. Do you want coated (water resistant) or uncoated (breathable)?7. What features do you need?7.1 Insert handle7.2 Insert tag7.3 PP gusset7.4 Paper gusset7.5 Hemmed top7.6 Easy (E-Z) open7.7 Double bag7.8 Insert liner7.9 Ventilation8. Do you want it printed or plain?9. If printed, do you want direct printing or laminated?10. How many do you need?11. How soon do you need them?Some most common sizes of woven polypropylene bags for your reference

What kind of Raw Material we used to manufacture?

What material TAIMEI use? We standard woven and knitted fabrics are primarily made of environmentally-friendly raw materials polyethylene and/or polypropylene. The standard product range consists of tape fabrics (coated or uncoated), reinforced films and woven or knitted netting. When durability and/or life expectancy play a crucial role in the application, we also use polyester PVC-coated textiles and netting. Should our standard materials not meet the specific requirements of your customers’ applications, then we would be happy to inform you about our Made To Order possibilities.We supply from stock a wide range of tarpaulins and netting suitable for most standard applications. All of our standard products are tested regularly at renowned European laboratories to ensure the highest quality demands. Precise finishing, reliable quality and ingenious packaging make all the difference. Naturally, we can deliver from stock most of our materials in rolls as well for convenient manufacturing of unusual sizes and/or other applications.

What is our product UV Stability Level?

Is our products UV treated? Exposure to sunlight has a negative effect on the useful life of plastics. UV radiation will break down the chemical bonds of the polymer. The process results in cracking, chalking, colour fading and loss of mechanical properties such as tensile strength, elongation and tearing strength. UV stabilizers will slow down this degradation process. For products that require a longer lifetime UV stabilisers are added to both yarns and lamination during the production process.UV stabilisers in plastics usually act by absorbing the UV radiation and converting the energy as low level heat. The chemicals used are similar to those used in sunscreen lotion, which protects the skin from sunburn. The solar radiation is measured in kilo Langley (Kly) per year and mapped worldwide per region. Since we have too many products and not all products have a UV test in the lab. But we have also done some test on our main products. According to our experience, all our products with UV stabilisers could have an indicative Kly value, which will give you an idea about the expected lifetime under normal conditions. The retained strength after the given Kly period should be at least 50%. Please note that these values are only an indication since there are many circumstances that influence the result such as cloudiness, atmospheric humidity, snow reflection and altitude.

What is our products Flame Retardant Level?

Basic Knowledge Flame Retardant The first thing we need to know is that all polymer based fabrics will burn when they are subjected to sufficient heat. Flame retardants are added to plastics fabrics or coating layer to either reduce or slow down the flame spread. In some cases they even extinguish the flame if there is no more external heat. In other words flame retardants will only create extra time to escape from the location where fabrics are on fire.For Polyethylene and Polypropylene fabric, we usually add the flame retardants additive to both base fabric and coating layer. And polyester based fabric, we will only add to the coating layer. Flame retardants are not able to make polymer fabrics inflammable,  they will only change the flammability! Taimei uses following types of flame retardants for its products: A standard flame retardant, available in white colour only, no UV stability (limited lifetime compared to non FR!). Significantly lower mechanical properties compared to similar non FR qualities. This classic brominated flame retardant is not environmental friendly.An UV stable flame retardant, available in any colour even in transparent, reasonable UV stability of between 100 to 200 Kly, no changes on the mechanical properties. Environmental friendly.

What the difference between cut size and finished size of tarpaulin?

The Difference between a Cut size and a Finished size When a tarpaulin’s size is mentioned, it can either be a cut-size or a finished size. Both these terms are part of the tarp-industry jargon. Whether the size is a cut-size or a finished-size, we will mention it when you discuss with our sale people.Cut SizeCut Size refers to the size of a tarp before sewing of seams and hems.  As an example, for a 6’ x 8’ Cut Size tarp, the material will start at 6’ x 8’.  After sewing, it will finish approximately 5’6” x 7’6”.  Generally, you will lose 6-9” per dimension depending on the size of the piece and the number of seams needed to fabricate the piece.  3” of fabric is needed to make a hem, plus additional material is needed to sew the panels together.Finish SizeConversely, Finish Size refers to the size of a tarpaulin after sewing (hem) has been completed.  This means that if the Finish Size is specified when ordering, the extra fabric that is necessary to create hems and seams has already been accounted for and the actual end product will be 6’ x 8’. As such, a 6’ x 8’ Finish Size tarp will finish at 6’ x 8’ after sewing is completed.  In other words, the material will start larger, approximately 6’6” x 8’8” and then after the hems and seams are made, the piece will be 6’ x 8’ when completed.In short:Cut size is the gross size before fabrication. The finished size will be smaller (-/- 2 x 5 cm hem , -/- number of seam x 5 cm)Finished size is the nett size after fabrication. The cut size will be bigger (+/+ 2 x 5 cm hem, +/+ number of seam x 5 cm). Cut size:4,00 m x 6,00 m 24,00 m²Finished size:3,85 m x 5,90 m Surface 22,72 m² (-/- 5,3%) Finished size:4,00 m x 6,00 m 24,00 m²Cut size:4,15 m x 6,10 m 25,32 m² (-/- 5,3%) Tolerance on all mentioned sizes is  +/- 2%In the most of the case, the size tolerance of the tarpaulin cut size and finished size is about 3%-5% Tip: Our Tarps size are typically listed based on our knowledge on your market. So keep this in mind when ordering your tarps or covers.

What different between Product Weigth and Fabric Weight?

What different between Product Weigth and Fabric Weight? We people buy tarpaulins, some people always confuse about product weighht and fabric weight. The weight difference is caused by the seam, hem, inserted rope, eyelets, leaflet and polybag. The smaller the size the bigger the difference between fabric and tarp weight.Since there is a significant difference in weight per size, it is very difficult for customers to distinguish. So, we will named "Product weight" and "Fabric weight" to make it clear. Product Weight: The prodcut total net weight divided by product size. Fabric Weight: The fabric weight per square meter. For example, with a fabric weight of e.g. 100 g/m² the difference in product weight between 2m x 3m and 10m x 12m is close to 8%.In our Support PDF-document “Fabric Weight & Tarp Weight” you find an explicit clarification.