HIPS SECCO Shanghai HIPS‑622

Material Introduction: HIPS SECCO Shanghai HIPS‑622 is a high‑impact polystyrene plastic. It is widely applied for its high‑impact performance, favorable heat resistance and compliance with food‑contact safety standards.

Main Applications

Food packaging, cups, electrical components and furniture.

Physical Properties

Performance Category	Test Item	Reference Test Standard	Unit	Typical Value / Range
Physical Properties	Density	ISO 1183	kg/m³	1030
	Melt Flow Rate (MFR)	ISO 1133 (200°C/5kg)	g/10min	4.8
Mechanical Properties	Tensile Strength (Yield)	ISO 527‑2	MPa	25
	Elongation at Break	ISO 527‑2	%	50
	Flexural Modulus	ISO 178	MPa	1700
	Izod Notched Impact Strength	ISO 180	J/m	125
	Izod Un‑notched Impact Strength	ISO 180	J/m	1150
Thermal Properties	Heat‑Distortion Temperature (HDT, 1.82 MPa)	ISO 75‑2	°C	80
	Vicat Softening Temperature	ISO 306 (B50/oil)	°C	90
Safety Certifications	Food‑contact Property	‑	‑	Food‑grade

Injection Molding Parameters

Process Parameter	Reference Range / Recommendation	Remarks & Descriptions
Drying Treatment	60‑80°C for 0.5‑1.5 hours	Although HIPS has low moisture absorption, pre‑drying is recommended to guarantee optimal processing conditions and product quality.
Barrel Temperature	175‑250°C	Actual settings can be adjusted within this range according to practical working conditions.
Mold Temperature	40‑70°C	Higher mold temperature helps reduce internal stress.
Injection Pressure	700‑1300 kg/cm²	Approx. 68.7‑127.5 MPa (conversion factor: ~0.09807)
Injection Speed	Medium speed	Avoid excessive speed which may cause molding defects.
Back Pressure	0.5‑1.0 MPa (general HIPS recommendation)	Proper back pressure contributes to melt homogenization.
Screw Speed	Medium (e.g. 50‑100 rpm, general HIPS recommendation)	High screw speed shall be avoided to prevent shear overheating.
Mold Shrinkage	0.3‑0.6%	Typical value for HIPS; subject to product design and process conditions.

Disclaimer: All above data is for reference only.