Plastics Shrinkage Rate & Mold Shrinkage Rate

It is very important for each product design to know the plastics shrinkage rate. So that when he designs his parts design, he can present the right scale size of the drawing to mold manufacturing factory like Intertech. 

Intertech provides here with the referenced of the most common used plastics shrinkage rate chart to help the product designer to double check their product design.  Intertech will provide our experience for helping customer to select the right plastics for their project.  Welcome to discuss with Intertech for any

Plastics material shrinkage rate application


Mold Shrinkage Rate

Meanwhile, the mold shrinkage rate corresponses the material shrinkage rate and provides good information for production injection molding factory for calculating the final finished product size to be formed in final shape.

Intertech’s mold design and engineering team is quite profession in helping customer to double check this correspondence and build the best mold, product the best finished for customer. Welcome to discuss us with your project.

                                    Plastics Shrinkage Rate   
General Plastics Shrinkage Rate (%)
Raw Material  Add. 30% GF
LDPE 2.0 0.5
HDPE 2.0 0.4
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 (%)  
Raw Material  Add. 30% GF
NY6 1.5 0.4
NY66 1.5 0.4
PBT 2.0 0.4
POM 2.5 0.5
PC 0.6 0.1
PPO 0.6 0.1
                                   Mold Shrinkage Rate   
Plastics Glass Fiber Adding 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   0.5-2.2
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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Taiwan factory manufacturing for all the plastic injection mold requirements, communications, Auto mold, Household mold, Electrical mold, LED mold, Medical mold, lens mold, etc.  


German and Japan Imports Mold Steel

German and Japan Imports Mold Steel

High Mold Quality and Precision

custom molds


Intertech can provide you customized, high-qulaity mold and molding service and new product information from our factory, Taiwan. Do you have any suitable plastic, silicone, metal item mold and molding project for us now? You will be satisfied with
our price report! Expecting your reply !
Intertech is based 100% in Taiwan with more than 30 years experience. We help customer to make customized plastic injection molds,particularly in the material of high quality steel purely imports from German and Japan. We commonly use mold steel such as P20 (1.2311), H13 (1.2344) and Starvax 420 (stainless steel), and with simple maintenance, all these tools can run min. 200000 ~1000000 shots under ideal operational condition.

As a plastic molding manufacturing , we are the factory with plastic moulding capability of 50-250T machines in house output and 300-3000T machines output in associated party.
Mold and Molding Service
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