New Metal-Resin Bonding Technology Uses Metal Insert Molding

Press Release Summary:

Poltplstic’s Quick-10® Metal-Resin Bonding Technology is used in bonding metal parts and resins by a molten resin applying via injection molding to metal parts that have gone surface treatment. The technology is suitable for mobile device parts such as mobile phones, tablets and digital cameras. Resin composites exhibits properties of metals and engineering plastics. Quick-10 utilizes quick heating and cooling of inserted metals for producing direct metal-resin bonding.

Original Press Release:

Polyplastics Develops Metal-Resin Bonding Technology for Automotive and Electrical/Electronics

TOKYO, May 16, 2018 - Polyplastics, a leading global supplier of engineering thermoplastics, has developed an innovative technology that improves metal-resin bonding of composite parts for the automotive and electrical/electronics industries.

Direct metal-resin bonding is a process which uses metal insert molding. Metal parts and resins are firmly bonded by introducing molten resin through injection molding to metal parts which have already undergone sufficient surface treatment. Metal-resin composites deliver the properties of metals (high rigidity, electrical conductivity) and engineering plastics (low density, electrical insulation). However, while many factors (metal parts, resins, mold structure, injection molding conditions) have had an adverse effect and prevent stable bonding, Polyplastics has made progress with successful bonding. 

For metal surface treatments, Polyplastics’ Quick-10® technology uses quick heating and cooling of inserted metals to produce direct metal-resin bonding with metal insert molding alone, without any special surface treatments for the metal side. Resins must exhibit properties such as interface infinity, surface transferability (flowability), and low shrinkage to produce good bonding.

A key resin component is an affinity improvement additive that gives the metal-resin interface improved compatibility and promotes maximum adhesion to the metal surface. Polyplastics’ metal adhesion grades include 1135MF1 and 940MA for PPS and PBT respectively. Other metal adhesion grades, 1150MF1 and 930MA, provide added functionality.

Polyplastics notes that mold temperature can have a strong effect on bonding. The company has devised optimum molding conditions to achieve good surface transferability and low mold shrinkage with a linear expansion rate close to that of metal.

Metal-resin bonding technology has been used in mobile device parts (mobile phones, tablets, digital cameras) and some auto-related parts.

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Quick-10® is a registered trademark of Polyplastics Co., Ltd. in Japan.

About Polyplastics

Polyplastics Co., Ltd. is a global leader in the development and production of engineering thermoplastic solutions. The company’s broad product portfolio includes POM, polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), and liquid crystal polymer (LCP). The company has the largest global market share of POM. 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.​

Source: Polyplastics Co., Ltd.

Ikue Nakagawa & Yuko 

Polyplastics Co., Ltd.

Tel: +81-3-6711-8607


Address: 2-18-1 Konan, Minato-ku, Tokyo, Japan

Joe Grande

J. Grande communications Inc.

Press Contact 



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