Chemical Chinese name: ethylene-vinyl acetate copolymer

Chemical name: ethylene-vinyl acetate copolymer

English abbreviation: EVA

Molecular formula: (C2H4)x.(C4H6O2)y

Molecular weight: 342.43

Relative molecular mass: 2000 (average)

CAS No.: 24937-78-8

Melting point: 75 ° C boiling point: 170.6 ° C

Relative density: 0.948g/mL (25°C)

Flash point: 260 ° C



Usually high temperature processing will decompose EVA, so the acidity is so large, and the proper reduction of working temperature will reduce the acidity without affecting the performance and output of the product. When the sour taste is very strong

It is recommended to contact the manufacturer to see if there is a problem with the quality of the product. It is recommended to ventilate the indoor work. It is not recommended to contact the sour gas for a long time. Normal EVA ingredients, sour taste

Often low or not. The method to reduce the sour taste is as follows:

1. Imported high quality eva raw materials.

2. Properly reduce the current processing temperature to prevent the temperature from decomposing EVA.

3. Add antioxidants

4 often clean the equipment. The residual EVA is removed.

5. Choose a regular manufacturer. Weiwang hot melt adhesive professional hot melt adhesive manufacturers, buy hot melt adhesive, please certify Weiwang.

   2019-6-11