Foam double-sided tape is coated with a layer on the surface because it has a pressure-sensitive adhesive. From animals and plants, the first adhesive in the nineteenth century, the main component of rubber-based adhesives is widely used in various polymers in modern times. The thing that the glue can hold is because their molecules and the connection items between the molecules are bonded together, and the bonding molecules are formed by firmly sticking together. The composition of the adhesive, according to different labels, different types, there are also many different polymers.
Foam double-sided tape, paper, cloth, plastic film as the base material, elastic pressure-sensitive adhesive or resin-based adhesive made of pressure-sensitive adhesive that is uniformly coated on the substrate and the adhesive The roll of the combined belt is made up of three parts to release the paper (film). According to the glue, it can be divided into solvent-based adhesive tape (oil-based foam double-sided tape), emulsion adhesive tape (water-based foam double-sided tape), hot melt tape, roll tape, and adhesive tape. Generally, it is widely used for leather, nameplate, stationery, electronic products, car accessories fixing, shoes, paper, handicrafts for pasting and positioning purposes. Hot melt adhesive foam double-sided adhesive stickers, stationery, office. Oily foam double-sided tape is mainly used for leather goods, pearl cotton, sponge, shoes and products
The double-sided foam tape is made of EVA as the main substrate, coated with pressure-sensitive adhesive on both sides, and made of composite single-silicon or double-silicon release materials. The full name of EVA is ethylene-vinyl acetate copolymer, and the content of vinyl acetate is before 5%-40%. EVA foam double-sided tape adds vinyl acetate monomer to the molecular chain, which reduces the high crystallinity, improves the flexibility, impact resistance, filler compatibility and heat sealing performance, etc., and the scope of use has been greatly expanded. EVA foam tape is generally used in foam shoe material industry, functional shed film products, packaging film products, hot melt adhesive industry, wire and cable and toys industries. Foam double-sided tape Generally, the performance of the raw material of EVA foam double-sided tape mainly depends on the content of vinyl acetate in the molecular chain. Application of foam tape in handheld computers:
1. Act as a cover repair screw button;
2. Fixing aspects: fixing the product label, fixing the window frame, fixing the touch screen, fixing the LCD frame, fixing the LCD module, and fixing the battery compartment;
3. Cushioning: battery compartment cushion, speaker cushion;
4. Act as a microphone dustproof pad;
5. Protection: act as a screen protector and port edge protection.