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Plastic Material Shrinkage Rates

  • Compare Quotes from Plastic Material Suppliers
MATERIAL TYPE TYPICAL MOULDING SHRINKAGE RATIO (%)
ABS 0.6
ABS/PC ALLOY 0.7
ACETAL 1.8
ACRYLIC 0.6
CAB 0.5
HDPE 3
LDPE 3
NYLON 6 1.2
NYLON 6 (30% GF) 0.4
NYLON 6/6 1.5
NYLON 6/6 (33% GF) 0.5
NYLON 11 1
NYLON 12 1.4
PEEK 1.1
POLYCARBONATE 0.6
POLYESTER PBT 2
PET (SEMI CRYSTALLINE) 0.4
PET (AMORPHOUS) 0.4
POLYPROPYLENE (COPOLYMER) 2
POLYPROPYLENE (HOMOPOLYMER) 1.5
POLYPROPYLENE (30% TALC FILLED) 1
POLYPROPYLENE (30% GF) 0.5
POLYSTYRENE 0.5
POLYSTYRENE (30% GF) 0.1
PVC P 1.5
PVC U 0.4
SAN 0.6
SAN (30% GF) 0.1
TPE 2.5
 

Plastic moulding shrinkage is the contraction of a plastic moulding as it cools after injection. Most shrinkage occurs in the mould during cooling, but some shrinkage occurs after ejection, as the part continues to cool. After that, the part may continue to shrink very slightly for several hours or even days until the temperature and moisture content stabilise.

All polymers have different shrink rates depending on many factors. These include amorphous or crystalline materials, cycle times, temperatures, mould design, part shape and wall thickness.

Our chart shows typical shrinkage ratios for the list of materials

IMPORTANT NOTICE AND DISCLAIMER IN RESPECT OF THE MATERIAL SHRINKAGE RATES CALCULATOR

This information should be used as an 'on the spot' reference only. Users should always follow the material suppliers processing data sheets. The data is provided “as is” and without any representation or warranty of any kind, including that it is fit for any purpose or of merchantable quality, or functions as intended or at all. Your use of this data is entirely at your own risk and PlastikCity accepts no liability of any kind.

Sponsored by:

Polydist - Plastic material shrinkage rates

The vital link in your polymer supply chain

Call Us: +44 (0) 1283 517 517

Email Us: sales@polydistuk.com

Website: www.polydistuk.com

Sabic logo
 

 

We provide Next Day Deliveries of one bag to full truck or tanker loads to the UK and Ireland

We are the official SABIC Specialties distributor for NORYL™, ULTEM™, LNP™ and LEXAN™ copolymer grades

Polydist (UK) are part of 'your Pan-European polymer distribution company', Polydist Europe.

Our affiliate offices in Spain, Turkey and Benelux, our strong European network and our excellent relationships with some of the World's leading polymer producers enable us to act as your European polymer supermarket. Our product portfolio is exceptionally varied and vast.

Our partners:

Braskem logo Braskem imgreen logo Equate logo Formosa Plastics logo Repol logo Lotte chemical logo Politem logo Radici group Sabic logo SPL logo Veolia logo Yuntianhua logo

 
 

Product Portfolio

Sabic Speciality

  • CYCOLOY™ RESINS
  • NORYL™ RESINS
  • SPECIALTY BLENDS & COMPOUNDS LNP™ COMPOUNDS
  • LEXAN™ COPOLYMER RESINS
  • ULTEM™ RESINS
  • VALOX™ & XENOY™ RESINS

Engineering Polymers

  • Acetal (POM) Copolymer
  • Nylon 6 Industrial
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  • PBT
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  • PET
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Product Portfolio

Polyolefins

  • HDPE
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  • PP (Co-Polymer)
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  • PP Random Co-Polymer
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Styrenics

  • ABS
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