EVA is made from the copolymerization of ethylene (E) and vinyl acetate (VA), referred to as EVA, and is a relatively common midsole material. EVA is a new type of environmentally friendly packaging material. It is made of EVA foam, which overcomes the shortcomings of ordinary foam rubber such as brittleness, deformation, and poor recovery. It has many advantages such as water and moisture proof, shockproof, sound insulation, heat preservation, good plasticity, strong toughness, recycling, environmental protection, impact resistance, anti-slip and shock resistance, etc. It also has good chemical resistance and is an ideal traditional packaging material. alternatives. EVA has extremely strong plasticity. It can be die-cut into any shape, and can be customized according to customer drawings. The EVA storage bag can be customized with the color, fabric and lining required by the customer. EVA is widely used in shockproof, anti-slip, sealing and heat preservation of electronic appliances, lining of various packaging boxes, metal cans and other industries. Functions as shielding, anti-static, fireproof, shockproof, heat preservation, anti-slip, and fixed. Wear-resistant and heat-resistant. Insulation and other functions.
The scientific name of EPE is expandable polyethylene, also known as pearl cotton. It is a new type of packaging material that can reduce and absorb vibration. It is a high-foam polyethylene product extruded from low-density polyethylene (LDPE) as the main raw material. EPE pearl cotton is foamed into special shapes using butane, which makes EPE highly elastic, tough but not brittle, with a soft surface. It can effectively prevent damage caused by friction during product packaging and has excellent shock absorption and resistance properties. . It is now widely used in the packaging of electrical appliances, furniture, precision electronic instruments and other products. EPE pearl cotton is durable against mechanical oil, grease, etc. Because it is a bubble body, it has almost no water absorption. It can be oil-proof, moisture-proof, shock-proof, sound insulation and heat insulation, and can also resist the erosion of many compounds. EPE pearl cotton can meet different packaging requirements, antistatic, flame retardant, etc. according to the needs of different products. It also has rich colors and is easy to process.
The scientific name of sponge is polyurethane soft foam rubber, which has obvious uses in shock absorption, anti-friction, and cleaning. The types are divided into polyester sponge and polyether sponge, which are further divided into three types: high rebound, medium rebound and slow rebound. The sponge is soft in texture, resistant to heat (can withstand a temperature of 200 degrees), and is easy to burn (flame retardants can be added). Depending on the size of the inner bubbles, it can exhibit various densities and can be molded into various shapes as needed. It has a wide range of uses and is mainly used in shockproof, thermal insulation, material filling, children’s toys, etc.
The main differences between the three are as follows:
1. We can see the difference between them with our naked eyes. Sponge is the lighter of the three. It is slightly yellow and elastic. EVA is the heavier one among the three. It is black and somewhat hard. EPE pearl cotton appears white, which is easy to distinguish from sponge. The sponge will automatically return to its original shape no matter how you press it, but EPE pearl cotton will only dent and make a popping sound when you press it.
2. You can see wavy patterns on EPE pearl cotton, like a lot of foam glued together, while EVA has a shape and can be distinguished according to its concentration.
Post time: Jun-24-2024