HIPS. High impact. Refrigerator liners.
High-Impact Polystyrene (HIPS) — impact-modified styrene plastic. Standard for refrigerator liners, signs, food packaging, disposable items. Cost-effective.
High impact polystyrene
HIPS cheaper, easier to process, less stiff. ABS stronger, more durable, more expensive. Choose by load.
Key principles.
Impact-modified
Polystyrene + butadiene rubber for impact toughness. Maintains rigidity.
UTS 22-25 MPa
Lower strength than ABS but higher toughness than standard polystyrene.
Easy injection
Excellent flow, low molding pressure. Faster cycles than ABS.
Very cheap
~$2/kg. Cheapest impact-grade plastic.
Cosmetic parts
Refrigerator interiors, signage, food packaging, toys, disposable cutlery.
Low strength
Not for structural or load-bearing applications.
FAQ
HIPS cheaper, easier to process, less stiff. ABS stronger, more durable, more expensive. Choose by load.
Excellent gloss in mold. Easy to paint, vacuum metallize.
Recyclable (#6). Limited recycling stream — usually downcycled.
Service temp up to 70°C. Deforms above this.
Some HIPS grades FDA approved. Specify food-contact grade.
Cost-effective at any volume. Cheap commodity tooling investment.
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