Country for PR: Japan
Contributor: Kyodo News JBN
Thursday, December 01 2022 - 16:00
Polyplastics Develops New Void Prediction Technology for Injection-molded POM Products
TOKYO, Dec. 1, 2022 /Kyodo JBN-Asianet/ --

Polyplastics Co., Ltd., a leading global supplier of engineering 
thermoplastics, has developed unique CAE analysis technology that predicts the 
occurrence of vacuum voids in injection-molded products made of DURACON (R) 
POM. This new CAE tool can predict the risk of voids forming before creating 
the mold, thus helping to reduce trial samples, shorten the development cycle, 
and reduce energy usage.


Polyplastics' void prediction technology takes into consideration changes in 
variables, including temperature and pressure during the resin solidification 
process when using DURACON (R) POM. This technology verifies the shape, molding 
conditions, and effects of changes in the gate position in advance, and 
visualizes the size of voids as well as the positions in which they form.

One type of molding defect is hollow pockets, called voids, which form near the 
center of thick injection-molded products. Parameters such as volume shrinkage, 
which is produced as output from flow analyses, had conventionally been used 
for void prediction, but the accuracy of this method has been problematic since 
the actual phenomenon can't be re-created.

The new void prediction technology is an entirely new method that links flow 
analysis with structural analysis to predict the formation of voids according 
to strain arising inside molded products, taking into consideration mold 
shrinkage, elastic modulus, and distribution of pressure in the resin 
solidification process. Since it can predict voids with high accuracy before 
the mold is built, the technology promises to reduce the development cycle, cut 
down on product development costs, and reduce energy consumption for 

Polyplastics is offering the new technology as part of its overall technical 
support for current POM customers.

For more information, visit

About Polyplastics
Polyplastics Co., Ltd. is a global leader in the development and production of 
engineering thermoplastics. The company's product portfolio includes POM, PBT, 
PPS, LCP, PET, COC, and LFT. The company has the largest global market share of 
POM, LCP, and COC. With more than 50 years of experience, the company is backed 
by a strong global network of R&D, production, and sales resources capable of 
creating advanced solutions for an ever-changing global marketplace.

*DURACON (R) is a registered trademark of Polyplastics Co., Ltd. in Japan and 
in other countries.

Source: Polyplastics Co., Ltd.