Tell you where is the difference between EVA foam and pearl cotton

        EVA product features: EVA foam is made by copolymerization of ethylene (E) and vinyl acetate (VA), referred to as EVA for short. EVA is characterized by good softness, elasticity like eva foam and pearl cotton rubber, and still has good flexibility at -50°C, good transparency and surface gloss, good chemical stability, and resistance Good aging and ozone resistance, non-toxic. Good blending with filler, good coloring and molding processability. EVA can be used for injection molding, extrusion, blow molding, calendering, rotational vacuum thermoforming, foaming, coating, heat sealing, welding, etc. It can be used as a building material for waterproof, fire, sound insulation, etc.

    Sponge product features: Most sponges are synthesized from polyisocyanates and polyols. The basic reaction is the reaction of polyols and polyisocyanates to produce polyurethane. The commonly used sponge is called soft polyurethane foam rubber. Polyurethane is a common one in daily life. This kind of polymer material is widely used to make various "sponge" products. And elastic materials for shock absorption and anti-friction purposes.

      EPE (Expandable Polyethylene) is expandable polyethylene, eva foam and pearl cotton are also called pearl cotton. It is a non-crosslinked closed-cell structure. It is a high-foam polyethylene product extruded with low-density polyethylene (LDPE) as the main raw material. It is composed of low-density polyethylene resin through physical foaming to produce countless independent bubbles. It overcomes the shortcomings of ordinary styrofoam that are fragile, deformed and poor in recovery. It has many advantages such as water-proof and moisture-proof, shockproof, sound insulation, heat preservation, good plasticity, strong toughness, recycling, environmental protection, and strong impact resistance. It also has good chemical resistance.

         The main differences between the three are as follows:

         1. It can be distinguished with the naked eye. The sponge is generally yellowish and very elastic. Eva foam and pearl cotton are relatively lighter than the three. EVA is a bit hard, usually black, which is the heavier of the three. EPE pearl cotton is generally white, which is very distinguishable from sponge. No matter how you press it, the sponge will be restored to its original state, while EPE pearl cotton will be hardened. When you press it down, you will hear a popping sound, and the place you press it will sink.

         2. EPE pearl cotton has wavy patterns, it looks like there are a lot of foam sticking together, it is very light, EVA foam is solid, and the concentration is relatively heavy.