ESBO is a yellowish viscous liquid produced from soybean oil through epoxidation. It serves as a non-toxic plasticizer and stabilizer in polyvinyl chloride (PVC). The epoxide group is more reactive than double bonds, making it a good acid scavenger
Geomembrane is a low permeability synthetic membrane for fluid control. Made from continuous polymer sheets or geotextile impregnation. Raw materials include polymer resin and additives like antioxidants
Raincoats are waterproof garments worn on upper body for protection. Oldest recorded rainwear is Ötzi's woven grass cape from 3230 BCE. Olmec Native Americans invented rubber-impregnated waterproof fabrics. Northwest Pacific Coast used woven cedar fiber raincoats
Electrical tape is pressure-sensitive for insulating electrical wires. PVC is most popular due to stretchability and effectiveness. Class H insulation uses fiberglass cloth. Various colors indicate wire voltage and phase
PVC soft film is made from polyvinyl chloride and plasticizers. Material offers better elasticity than traditional PVC. Thickness ranges from 0.05mm to 15mm, width from 100mm to 2300mm. Plasticizers transform rigid PVC into flexible material
Blister packaging originated in 1950s with Hoechst's Rigid PVC base. Push-Through-Blister-Package developed in 1960 for contraceptives