EVA classification:

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(1) In terms of different polyurethane foams, there are environmental protection coarse hole EVA, general EVA, food grade stainless steel odorless environmental protection EVA, fire safety EVA and antistatic EVA.

(2) In terms of lining strength, there are 25 degrees, 38 degrees, 45 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, industrial commonly used foot pads are 38 degrees, 45 degrees, electronic internal accessories are generally 25-38 degrees.

(3) In terms of characteristics, there are general environmental protection EVA liners, fire safety EVA liners and antistatic EVA liners.

(4) In terms of tone, EVA packaging lining has gray and black EVA lining, milky EVA lining, colored EVA lining, white and black are commonly used in industry, and color is less.

Two molding methods for EVA packaging insert:

1, stamping molding: The stamped EVA lining is made with a knife die and then a small punching machine. If the thickness of the product is more than 3CM, it may make the four sides feel convex and convex, and the position with holes on the surface will have this phenomenon. In addition, the thickness of the stamped product should not be too thick, too thick will lead to the feeling that the position with holes will be concave.

2, engraving molding: The use of CNC computer engraving machine, one engraved EVA lining edge is straight. For example, if the thickness of EVA lining is 9CM, four sides can be carved out and are straight, but if the machine is pressed, the thickness of 9CM should be glued with two to three layers.

Advantages of EVA packaging insert:

1. Water resistance: closed bubble structure, no water absorption, moisture resistance, good water resistance.

2. Corrosion resistance: resistant to seawater, grease, acid, alkali and other chemicals corrosion, antibacterial.

3. Shock resistance: high resilience and tension resistance, strong toughness, it can absorb and disperse the external impact force through bending to achieve the buffering effect, with good shockproof buffering performance; Add hard high-density material, shock-proof material light toughness is good, compressive resistance and collision without fear of violence consignment.

4. Environmental protection: EVA foam raw materials non-toxic and tasteless processing, does not contain any harmful substances to the human body, no additives, degradable, environmentally friendly combustion, is a recyclable environmental protection material, in line with the European Union's mandatory environmental requirements for product packaging, can be used for export.