Xiamen Goldcattle Plastic & Metal Product Co.,Ltd

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Eva Injection Molding Process

Eva Injection Molding Process

In the field of chemistry and organic chemistry, EVA refers to "ethylene vinyl acetate copolymer" and its made rubber and plastic foaming material, molecular formula (C2H4) X. (C4H6O2) y, used in the manufacture of refrigerator pipes, gas pipes, civil engineering boards, containers and daily necessities, etc..

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Product Details

high speed eva injection molding process pipe protective parts with black color

Product Introduction

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In the field of chemistry and organic chemistry, EVA refers to "ethylene vinyl acetate copolymer" and its made rubber and plastic foaming material, molecular formula (C2H4) X. (C4H6O2) y, used in the manufacture of refrigerator pipes, gas pipes, civil engineering boards, containers and daily necessities, etc.. EVA rubber and plastic products is a new type of environmentally friendly plastic foam material, with good buffering, seismic resistance, heat insulation, moisture resistance, chemical resistance and other advantages, and non-toxic, non absorbent.

eva injection molding process5.jpgEVA PE is the main performance, elasticity, flexibility, gloss, permeability and so on, in addition, it is resistant to environmental stress cracking resistance is improved, the packing capacity increases, can be used to add more enhanced packing methods to avoid or reduce the mechanical properties of EVA than PE decline. EVA can also get new applications through the modification, the modification can be considered from two aspects: one is the EVA as the backbone of other monomers; two EVA alcoholysis.

Product Parameter(Specification) of

Mold   Material45#,P20 steel,   718, 2738, H13, NAK80, 2344, 2343, S136, etc . 
Mold TypePlastic   Injection Molding
Mold StandardHASCO,   DME, MISUMI, JIS, LKM, etc.
Mold Tooling EquipmentLathe,Milling,Grinder,Drill,CNC,EDM,Wire   cut machine,Punch machine
Injection Mold Machine19   Sets With Model 90T to 1100T
Gate TypeSide   Gate, Sub Gate, Direct Gate, Hook Gate, Pin Point Gate, etc.
Runner TypeCold   Runner or Hot Runner
CavitySingle   or Multi cavities
Mold Life45#:50,000   to 100,000 shots
P20:100,000 to 200,000 shots
718: 200,000 to 300,000 shots
H13: 300,000 to 500,000 shots
Lead TimeGenerally   mold making will take around 30 days and 7-10  day to mass   production 
PackageWooden   packing box for molds and Generally inner packed in opp bags, outside  packed in standard export carton with shipping marks, and the cartons will be   full of bubble bags.

Product Feature And Application

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In order to make refrigerator pipes, gas pipes, civil engineering boards, containers and daily necessities, packaging films, gaskets and medical equipment can also be used. They can also be used as hot-melt adhesive, cable insulation and so on. In the solar cell industry, the bonding between the battery and the surface photovoltaic glass and the battery backplane of the crystalline silicon cell.EVA resin is an ethylene vinyl acetate copolymer, and the content of vinyl acetate (VA) is 5% - 40%. Compared with polyethylene, EVA in molecular chain was introduced in vinyl acetate monomer, thereby reducing the high crystallinity, improved flexibility, impact resistance, filler compatibility and heat sealing performance, is widely used in foaming shoes material, functional films, packaging film, hot melt adhesive, electric cable and toys etc.. Generally speaking, the performance of EVA resin depends mainly on the content of vinyl acetate in the molecular chain.

Product Details

eva injection molding process2.jpgStability: good chemical stability, aging resistance, ozone resistance.
Molecular formula: (C2H4) X. (C4H6O2) y
Molecular weight: 2000 (average)
Health hazards: irritation to the eyes and skin.
Explosion hazard: This product is flammable and irritating.
Skin contact: remove contaminated clothing, rinse with flowing water.
Eye contact: lift eyelids, rinse with flowing water or saline. Medical treatment.
Inhalation: from the scene to the fresh air. Medical treatment.
Ingestion: drink plenty of warm water, emetic. Medical treatment.
Water resistance: airtight bubble structure, no water absorption, moisture resistance, good water resistance.
Corrosion resistance: seawater, grease, acid, alkali and other chemicals corrosion, antibacterial, non-toxic, tasteless, non polluting.
Processing: no joint, and easy to hot pressing, cutting, gluing, laminating and other processing.
Anti vibration: high resilience and tension resistance, high toughness, good shockproof and buffering performance.
Insulation: insulation, thermal insulation and low temperature resistance, resistant to cold and exposure.
Sound insulation: airtight bubble hole, sound insulation effect is good.
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When the vinyl acetate content in EVA is less than 20%, it can be used as a plastic. EVA (PA66) has good resistance to low temperature, the thermal decomposition temperature is low, about 230 degrees Celsius, with the increase of molecular weight, increase the softening point of EVA, processing and plastic surface gloss decreased, but the intensity increased, the impact toughness and environmental stress cracking resistance improved, EVA chemical resistance and oil resistance than PE, PVC is a bit poor, and with the increase of vinyl content, changes were more obvious.

Quanlity Control

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Delivery,Shipping And Service



Q: How soon can I get reply after send inquiry?
A: 1.All inquiries will be replied within 1 day except sleeping time in China.
     2.Our call phones standing by any calls at any time.
Q: How soon can I get sample ?
A: It depends your parts,generally sample can be sent out within 7days after product drawing confirmed by both side.
Q:What information should I give to you for inquiry?
A:Pls send your 2d and 3d drawings ,and tell us your special requirements such as material,tolerance,surface treatments and the amount you need ,ect .

Q: If I don’t have drawing, how can I get sample ?
A: If you don’t have any drawing,you can send us your sample, we will scan it and make 2D and 3D drawing first, then make sample for you.

Q: What’s your MOQ(minimum order quantity)
A: We don’t have MOQ, you are welcome to send us trial order to test our quality and service.

Contact Us


Watson Lin
Xiamen Goldcattle Plastic & Metal Product Co.,Ltd
Address:8th Floor,Dongfang shangmao Building,NO.56 Yibinbei RD, Huli Dist,Xiamen,Fujian,China 361006

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