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High flow, high rigidity, and design freedom

High flow, high rigidity, and design freedom

News 01.07.2019

The Polyplastics Group has announced the development of several new DURACON® polyoxymethylene (POM) grades which deliver high flow, high rigidity, and design freedom for the production of injection molded automotive fuel system components. The new materials complement Polyplastics’ flagship DURACON® POM portfolio which is already widely used for automotive fuel system components due to its excellent fuel resistance.

car01 car02

Illustration 1-1 : Fuel system components (all parts of a car)

Illustration 1-2 : Fuel system components (Fuel sending module)

 

The company has commercially launched DURACON® H140-54C, a high flow/high rigidity grade with a melt flow rate (MFR) around 14. This material suits a wide range of molding conditions (cylinder conditions, injection pressure) and is used in Europe. The aim of going to a more rigid material is to allow products to be made thinner. Meanwhile, the higher flow suppresses increases in peak pressure that occur during injection molding due to thinwalling. DURACON® H140-54C facilitates the production of small, thinwall parts.

Polyplastics has also announced a developmental POM grade which provides exceptional acid resistance. Historically, one of POM’s limitations has been its vulnerability to strong acids, but this new material provides significant improvements. This acid-resistant grade is targeted for a range of fuel system applications including ORVR valves, cut-off valves, and fuel pump module flange parts which are attached to the outside of fuel tanks. These parts can be damaged by the acidity in automotive cleaning liquids, acid rain, and other substances.

Polyplastics has also developed an electrically conductive grade for use in components that surround fuel as a measure against static electricity. Typically, when resin is imparted with conductivity it often affects certain performance characteristics, resulting in less flowability and toughness. However, this grade successfully imparts conductivity while also maintaining POM’s key performance attributes including flowability and toughness.

About Polyplastics
The Polyplastics Group is a global leader in the development and production of engineering thermoplastics. The Group’s product portfolio includes POM, polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), liquid crystal polymer (LCP), and cyclic olefin copolymer (COC). With more than 50 years of experience, the company is backed by a strong global network of R&D, production, and sales resources.
 
DURACON® is a registered trademark of Polyplastics Co., Ltd. in Japan and other countries.

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