EVA Sipchem 2518 (Saudi Arabia)

Product Introduction EVA Sipchem 2518 from Saudi Arabia is an ethylene‑vinyl‑acetate copolymer resin with vinyl acetate (VA) content of 18%. It is specially designed for various foaming molding applications. It possesses good foaming performance, excellent flexibility and elasticity, low melting temperature, favorable processability and good compatibility.

Main Applications

Foamed Products: Its core application field. ‑Shoe materials: soles and inner materials for slippers, sandals, mid‑to‑high‑grade travel shoes and mountaineering shoes, delivering lightweight, soft and cushioning effects. ‑Sports goods: gymnastics mats, sound‑insulating boards and sealing materials.

Injection Molding: Used for manufacturing other injection‑molded articles.

Profile Extrusion: Applied for extrusion molding of various profiles.

Performance Parameters

Performance Category	Test Item	Test Standard	Typical Value	Unit
Basic Properties	Vinyl Acetate (VA) Content	Internal Method	18.2	wt%
	Melt Index (190°C/2.16 kg)	ASTM D1238	1.5	g/10min
Physical Properties	Density	Internal Method	0.935	g/cm³
Mechanical Properties	Tensile Yield Strength	ASTM D638	5.20	MPa
	Tensile Strength at Break	ASTM D638	14.7	MPa
	Elongation at Break	ASTM D638	＞800	%
	Flexural Modulus	ASTM D790	60.0	MPa
	Shore Hardness A	ASTM D2240	90	‑
	Shore Hardness D	ASTM D2240	38	‑
Thermal Properties	Vicat Softening Temperature	ASTM D1525	64.0	℃
	Melting Temperature	Internal Method	87.0	℃

Processing Technology

Processing Method	Key Parameter	Recommended Range / Description	Important Reminder
Foaming Molding	Processing Temperature	Material temperature is preferably controlled at 170‑200°C, well below the decomposition temperature. Temperature profiles for specific foaming processes (compression molding, flat‑plate foaming) shall be adjusted according to foaming agent type and product requirements.	Strict temperature control! Excessively high temperature will cause premature decomposition of foaming agent or resin degradation. The dosage of foaming agent shall be precisely adjusted.
	Foaming Agent	Frequently used together with chemical foaming agents such as AC series.	Foamed products feature elasticity, light weight, high toughness and low shrinkage rate.
Injection Molding	Barrel Temperature	Conventional injection equipment for PE or PP can be used. Material temperature is preferably controlled at 170‑200°C. Upper temperature limit shall avoid thermal decomposition of EVA (approx.230°C).	‑
	Mold Temperature	Adjust according to product shape and dimension	Products are easy to eject due to good elasticity of EVA.
Extrusion Molding	Barrel Temperature Setting	Feeding zone: low temperature; compression zone: medium temperature; metering zone: relatively high temperature (the overall temperature shall stay within the recommended range).	Suitable for extruded products such as profiles and sheets.

Note: All data above is for reference only.