English 
EPE es polietileno desarrollable, también conocido como algodón perlado. Non-cross-linked closed-cell structure, it is a high foam polyethylene product produced by extrusion of low density polyethylene (LDPE) as the main raw material, which is composed of numerous independent bubbles produced by physical foaming of low density polyethylene lipid. Supera las deficiencias de fragilidad, deformación y mala recuperación de la espuma común. It is waterproof, shockproof, sound insulation, heat preservation, good plasticity, strong toughness, recycling, environmental protection, strong impact resistance and many other advantages, but also has good chemical resistance.
Sponge is ly made of polyisocyanate and polyol as raw materials to synthesize, the basic reaction is the reaction of polyol and polyisocyanate to produce polyurethane, commonly used sponge is called polyurethane soft foam rubber, polyurethane is the common kind of polymer material in life, widely used in the production of various “sponge” products. As well as shock absorbers, anti-friction elastic materials EVA is made of ethylene (E) and ethylene acetate (VA) copolymerization and referred to as EVA.
EVA is characterized by good softness, rubber-like elasticity, good flexibility at -50℃, good transparency and surface gloss, good chemical stability, good anti-aging and ozone resistance, and no toxicity. Good mixing with filler, good coloring and forming processing.
EVA can be injection molding, extrusion, blow molding, rolling, vacuum thermoforming, foaming, coating, heat sealing, welding and other molding processes, can be used as building materials used as waterproof, fire, sound insulation and other functions of the three differences mainly have the following points:
1 se puede distinguir a simple vista, la esponja es generalmente ligeramente amarilla, muy elástica, relativamente más clara que estas tres. EVA is a bit hard, usually black, and is the heaviest among the three. El algodón perlado EPE es generalmente blanco, lo que es fácil de distinguir de la esponja. Sponge can be divided into its original state no matter how you press it, while EPE pearl cotton will hear patter sound when you press it hard, and the place where you press it will be concave.
2.El algodón perlado EPE tiene un patrón ondulado y parece que tiene mucha espuma pegada. Es muy ligero. EVA es sólido. ¿Cuál es la concentración parcial? Es pesado.
