When heated, the polymer chain of PVC material will curl, thus reducing the shape of heat shrinkable sheet. Due to its unique properties, heat shrinkable sheets are often used to make various handicrafts, decorations and as insulating materials in the electronic industry. In addition, there is a kind of heat shrinkable tube called FEP (ethylene propylene fluoride * * *), which is a high-performance fluoroplastic material with excellent high temperature resistance, low temperature resistance, corrosion resistance, high insulation performance and good chemical stability. Widely used in wire and cable joint sealing protection, electronic component protection, aerospace, automobile manufacturing and other fields. Is the heat shrinkable sheet PP?
Heat shrinkable sheets are usually not made of PP (polypropylene) material. Heat shrinkable sheets are mainly made of plastic materials with heat shrinkable characteristics, such as PVC (polyvinyl chloride) or PET (polyester). For example, some discarded plastic lunch boxes are mainly made of PP, PC (polycarbonate) and PE. After recycling and processing, these materials can form recycled PP particles, but they are not common materials for heat shrinkable sheets.