Material Composition
Synthetic polymer functions as a durable coating for heavy-duty industrial textiles and waterproof garments. When used in apparel, polyvinyl chloride is applied as a liquid plastisol or a laminated film to provide a complete barrier against moisture. The resulting material is resistant to abrasion and chemical exposure.
Additive Role
Flexibility in this resin is achieved through the addition of liquid plasticisers. Raw polyvinyl chloride is naturally rigid and brittle, making it unsuitable for clothing without these chemical modifiers. The ratio of additive to resin determines whether the finished fabric is a stiff tarp or a soft raincoat.
Industrial Processing
Heat fusion cures the coating into a solid layer on the fabric base. During production, a knife-over-roll coater spreads the polyvinyl chloride across a polyester or nylon substrate before it enters a drying oven. This thermal stage ensures the polymer chains lock together and bond firmly to the textile.
If the heat is insufficient, the coating will delaminate from the backing during use. A well-bonded layer provides the structural integrity required for architectural fabrics and inflatable boats. This process must be ventilated to manage the release of volatile organic compounds.
Environmental Check
Disposal and recycling pose challenges due to the chlorine content in the polymer. Burning polyvinyl chloride can release hazardous gases if not handled in a controlled industrial incinerator. Manufacturers often look for alternatives like polyurethane for items requiring a lower environmental footprint.
