Plastic materials

Plastic Injection Materials—Table of Mold Shrinkage Rate

General plastics shrinkage rate (%)
pure material Added with 30%GFF
LDPE 2.0 0.5
HDPE 2.0 0.5
PP 1.8 0.4
PS 0.6 0.1
PVC 0.4 0.1
PMMA 0.5 0.1
ABS 0.6 0.1
Engineering plastics shrinkage rate (%)
pure material Added with 30%GFF
NY6 1.5 0.4
NY66 1.5 0.4
PBT 2.0 0.4
PET 0.5 0.1
POM 2.5 0.5
PC 0.6 0.1
PPO 0.6 0.1
Plastics

GF

 mold shrinkage rate
[%] [%]
PS   0.3-0.6
HI-PS   0.5-0.6
SAN   0.5-0.7
ABS   0.4-0.7
ASA   0.4-0.6
LDPE   1.5-5.0
HDPE   1.5-3.0
PP   1.0-2.5
PP+GF 30 0.5-1.2
PVC-soft   >0.5
PVC-rigid   0.5
PVDF   3.0-6.0
PMMA   0.1-0.8
POM   1.9-2.3
PPO   0.5-0.7
PPO+GF 30 <0.7
CA   0.5
PC   0.8
PC+GF 10-30 0.15-0.55
PBT   1.5-2.5
PBT+GF 30-50 0.3-1.2
PA6   0.5-2.2
PA6+GF 30-50 0.3-1
PA66   0.5-2.5
PA66+GF 30-50 0.5-1.5
PA11   0.5-1.5
PA12   0.5-1.5
PPS 40 0.2

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