HS code:3901300000
Melt flow rate:2.4~2.5
Category:Foam/Film grade
Product specification:25KG/Bags
Sample: provide sample service
Ethylene vinyl acetate (EVA) Introduction:
Ethylene-Vinyl Acetate (EVA) thermoplastic materials also known as polyethylene-vinyl-acetate (PEVA), is a copolymer of ethylene and vinyl acetate. In this formation, the weight percentage is variable ranging from 10 to 40 percent and remaining part is ethylene.
EVA copolymer is primarily of three different types, which differ in their vinyl acetate content and the way in which material is used. This porous elastomeric material is approximately three times more flexible than low-density polyethylene (LDPE) with tensile elongation of 750% and highest melting temperature as 250°F (96°C).
Types of EVA
Vinyl Acetate Modified Polyethylene (Low VA Density)
Thermoplastic Ethylene-Vinyl Acetate (Medium VA Density)
Ethylene Vinyl Acetate Rubber (High VA Density)
Propeties of ethy vinyl acetate:
Basic properties:
The material provides good clarity and gloss.
Highly resistant towards stress cracking and UV radiation.
Low-temperature resistance.
High friction coefficient.
It has a distinctive vinegar-like odor.
Physical and Chemical propeties of EVA:
Melting point – 75°C
Tensile strength is 0.05-0.2 N/mm2 and notched impact strength is no break Kj/m2
Density is 0.948 g/ml at 25 °C
Flash Point – 260°C
Thermal Coefficient of expansion 160 – 200 x 10-6
Stability – Stable, Combustible & incompatible with strong oxidizing agents.
They have very good resistance to Dilute Acids and Alkalis, Aliphatic Hydrocarbons, Alcohols, Oil, and Greases.
They have poor resistance to Aromatic Hydrocarbons and Halogenated Hydrocarbons.
Applications of EVA:
Film
Foam
Hot Melt Adhesives
Wire & Cable
Extrusion Coating
Solar Cell Encapsulation
Others (Injection Molding and Medical Tubing)
End user of EVA:
Automotive
Packaging & Paper
Paints, Coatings & Adhesives
Electronics & Electrical
Pharmaceutical
Footwear
Photovoltaic Panels
Others (Agriculture and Medical)
Specifications & Applications | |||||
Grade: | Other | visual inspection | Translucence | ||
Application: | Shoes, film, cable shielding material | ||||
Notes: | Processing conditions: Other | ||||
Technical parameters: | |||||
Items: | Test conditions (Statues) | Test method | Standard | Units | |
Physical performance | Grain Appearance | ，SH/T1541-2006 | ≤40 | 0 | /Hg |
Melting flow index | ，GB/T1591-1994 | 1.8-3.8 | 2.6 | g/10min | |
VA CONTENT | ，GB/1591-1994 | 16-20 | 18 | % | |
Mechanical Properties | Tensile break stress | ，GB/T10402-2006 | ≥12 | 19 | MPa |
stretch break nominal strain | ，GB/T10402-2006 | ≥500 | 846 | ||
Ethylene vinyl acetate (EVA) Introduction:
Ethylene-Vinyl Acetate (EVA) thermoplastic materials also known as polyethylene-vinyl-acetate (PEVA), is a copolymer of ethylene and vinyl acetate. In this formation, the weight percentage is variable ranging from 10 to 40 percent and remaining part is ethylene.
EVA copolymer is primarily of three different types, which differ in their vinyl acetate content and the way in which material is used. This porous elastomeric material is approximately three times more flexible than low-density polyethylene (LDPE) with tensile elongation of 750% and highest melting temperature as 250°F (96°C).
Types of EVA
Vinyl Acetate Modified Polyethylene (Low VA Density)
Thermoplastic Ethylene-Vinyl Acetate (Medium VA Density)
Ethylene Vinyl Acetate Rubber (High VA Density)
Propeties of ethy vinyl acetate:
Basic properties:
The material provides good clarity and gloss.
Highly resistant towards stress cracking and UV radiation.
Low-temperature resistance.
High friction coefficient.
It has a distinctive vinegar-like odor.
Physical and Chemical propeties of EVA:
Melting point – 75°C
Tensile strength is 0.05-0.2 N/mm2 and notched impact strength is no break Kj/m2
Density is 0.948 g/ml at 25 °C
Flash Point – 260°C
Thermal Coefficient of expansion 160 – 200 x 10-6
Stability – Stable, Combustible & incompatible with strong oxidizing agents.
They have very good resistance to Dilute Acids and Alkalis, Aliphatic Hydrocarbons, Alcohols, Oil, and Greases.
They have poor resistance to Aromatic Hydrocarbons and Halogenated Hydrocarbons.
Applications of EVA:
Film
Foam
Hot Melt Adhesives
Wire & Cable
Extrusion Coating
Solar Cell Encapsulation
Others (Injection Molding and Medical Tubing)
End user of EVA:
Automotive
Packaging & Paper
Paints, Coatings & Adhesives
Electronics & Electrical
Pharmaceutical
Footwear
Photovoltaic Panels
Others (Agriculture and Medical)