Plasticizer for PVC raincoat

A PVC raincoat is a waterproof outer jacket made from polyvinyl chloride (PVC). The slick, non-permeable surface of PVC makes it a popular material for raincoats. PVC raincoats are available in many different styles, colors, and variations, and are a perennial fashion favorite.

PVC is manufactured from a petroleum base, but since 57% of PVC is chlorine, it actually requires much less petroleum than most other plastics. The process of polymerization of the vinylchloride monomer (VCM) is exothermic, and must be kept at a certain temperature while the VCM-water suspension forms a slurry. The slurry is then degassed, the excess VCM and water is removed, and what is left is powdered PVC. The powdered PVC is then mixed with a number of additives including stabilizersplasticizers, processing aids, and pigments, then processed into a sheet.


                    Raincoat                                                                            Different kinds of plasticizers

PVC sheets are treated just like bolts of fabric when it comes time to manufacture clothing. A PVC raincoat is designed, patterned, measured, and cut just like a regular fabric. The only difference is that PVC raincoat seams are generally not stitched with a needle and thread. Since PVC is nonporous, a needle would leave a large hole that would allow water to enter, making for a very ineffective raincoat, and weakening the seam. Instead, PVC seams are generally "welded" with heat, or bonded by chemical means. Either way, the two pieces of material melt together, either thermally or chemically, and are permanently bound.

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