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{{more footnotes|date=February 2013}}
{{Globalize |date=October 2014 |discuss=Talk:Vinyl coated polyester#Globalize }}
'''Vinyl coated polyester''' is thea mostmaterial frequently used material for flexible fabric structures. It is made up of a [[polyester]] [[scrim (material)|scrim]], a bonding or adhesive agent, and an exterior [[PVC]] coatingscoating. The scrim supports the coating (which is initially applied in liquid form) and provides the tensile strength, elongation, tear strength, and dimensional stability of the resulting fabric. Vinyl-coated polyester is manufactured in large panels by heat-sealing an over-lap seam with either a radio-frequency welder or a hot-air sealer. A proper seam will be able to carry the load requirements for the structure. The seam area should be stronger than the original coated fabric when testing for tensile strength.
TheDepending moltenon vinylits coatingformula, ([[Polyvinylthe chloride|PVC]]) coating makes itthe material waterproof with a highand resistanceresistant to dirt, mildew, oil, salt, chemicals and UV. Therays vinyl coating on the fibersand gives the material added strength and durability. Vinyl coated polyester is a very dimensionally stable fabric that does not tear easily, nor will it stretch, crack, rot or mildew. It can be sewn or heat sealed by way of RF(Radio Frequency) welding or hot-air welding. ▼
The base fabric's tensile strength is determined by the size (denier) and strength (tenacity) of the yarns and the number of yarns per linear inch or meterdistance. The larger the yarn and the more yarns per inch, the greater the finished product's tensile strength.
The adhesive agent acts as a chemical bond between the polyester fibers and the exterior coating and also prevents fibers from wicking, or absorbing water ininto athe processscrim. thatThis couldprevents resultdamage incaused freeze-thawby damageabsorbed inwater theduring a [[Frost weathering|freeze thaw fabriccycle]].
The PVC coating liquid (vinyl Organisol or [[Plastisol]]) contains chemicals to achieve the desired properties of color, water and mildew resistance, and flame retardancy. Fabric can also be manufactured with levels of light transmission that range from very high to completely opaque. After the coating has been applied to the scrim, the fabric is put through a heating chamber that dries the liquid coating. ▼
▲The molten vinyl coating ([[Polyvinyl chloride|PVC]]) makes it waterproof with a high resistance to dirt, mildew, oil, salt, chemicals and UV. The vinyl coating on the fibers gives the material added strength and durability. Vinyl coated polyester is a very dimensionally stable fabric that does not tear easily, nor will it stretch, crack, rot or mildew. It can be sewn or heat sealed by way of RF(Radio Frequency) welding or hot-air welding.
Many fabrics such as this are now imported from Korea, Taiwan, and other Asian countries, but there are still manufacturers operating in the United States. These manufacturers benefit from laws such as the [[Buy American Act]] (BAA - 41 U.S.C. §§ 10a–10d) and the [[Berry Amendment]] (USC, Title 10, Section 2533a), which only allow the Defense Department to purchase fabrics made in the US.{{CN|date=February 2015}}
▲The PVC coating liquid (vinyl Organisol or [[Plastisol]]) contains chemicals to achieve the desired properties of color, water and, mildew resistance, and flame retardancy. Fabric can also be manufactured with levels of light transmission that range from very hightransparent to completely opaque. After the coating has been applied to the scrim, the fabric is put through a heating chamber that dries the liquid coating.
==References==
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