Overview
Applications
Comparison
Chemical formula
Specific gravity
1.04
Thermal properties
100
Tg(℃)
N/A
Tm(℃)
Characteristics
Dimensional stability
Transparency
Printing properties
Acid/alkali resistance
Impact resistance
Commentary
A polymer of styrene.
GPPS(GeneralPurpose PS): Basic PS with high transparency. It's hard and not good at impact resistance
・HIPS(High ImpactPS): Milky white PS with improved impact resistance by mixture with rubber components
Key points
- Widely used for food containers in sheet/vacuum-formed form due to its transparency, processability, and printability.
- Heat resistance is around 100℃, and it is not suitable for applications above 100℃.
- Expanded polystyrene foam is made from GPPS by heat with foaming agents.
Lactic acid bacteria beverage containers (HIPS)
Reason for adoption
Good flowability and wide range of molding conditions (excellent product dimensional accuracy and mass production)
Envelope window (GPPS)
Reason for adoption
Easy to see inside (transparency), easy to bond to paper (good adhesion)
Envelope window (GPPS)
Reason for adoption
Easy to see inside (transparency), easy to bond to paper (good adhesion)
Crystalline
Polyethylene
Polypropylene
Polyethylene
Terephthalate
Polyoxymetylene /
Polyacetal
Polybutylene
Terephthalate
Polyamide 6 /
Polyamide 66
Syndiotactic
Polystyrene
Poly Phenylene Sulfide
Polyphthalamide
Liquid Crystal Polymer
Fluorocarbon Polymers
Polyether-etherketone
Polymethyl-pentene
