THERMOPLASTIC ELASTOMERS | MATERIALS
helping give clarity about material origins. Currently there are series based on either post- industrial recyclate (PIR) or post-consumer recyclate (PCR), as defined by ISO 14021. The recyclate source for the Dryflex PIR grades includes material diverted from the waste stream during the manufacturing of consumer, construction and household applications including baby products. The recyclate source for the Dryflex PCR grades includes recycled PP from end of life vehicles, including automotive interior and exterior applications. Dryflex Circular TPEs are available in a range of
hardnesses from 40 Shore A, with recycled content up to around 80% by weight. Hexpol says the compounds are produced under the ISO 9001 and ISO 14001 standards and all compounds are RoHS, REACH and SVHC compliant. The Dryflex PCR grades are currently only available in black. They are targeted at automotive exteriors such as mud flaps, side-steps and wheel-arch liners. These grades can also be used for outdoor equipment such as lawnmower wheels or safety barriers. The Dryflex PIR grades are available in a natural colour, providing additional design possibilities. They are targeted at consumer goods, sports equipment, footwear, household and automotive applications. Kraiburg TPE has taken another route towards
increased sustainability. It announced last year that it had launched what it calls the world’s first weight-saving TPEs. Rather than using a foaming mechanism to reduce material density, these grades incorporate hollow glass beads. The company is now offering three new product lines for automotive vehicle construction, power tools and various other application areas. Expandable materials require strict process
control procedures to achieve an even surface quality without surface waviness, the company notes. This is one reason why it has implemented a
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new TPE technology using 3M Glass Bubbles for materials with very low densities – between 0.7 and 0.9 g/cm³ – that allow the production of thin-walled mouldings with high quality surfaces that can withstand high mechanical loads. Compression-set values are described as excellent. The microscopically small hollow glass bubbles
are made of chemically stable borosilicate glass. Kraiburg TPE says they spread evenly in the TPE matrix and help increase the dimensional stability. Production waste can be recycled directly. Thermolast K LW/UV (lightweight plus UV
resistance) grades are specifically for exterior vehicle components; Thermolast K LW/CS/UV (with increased compression set) grades adhere to polypropylene, making them particularly suitable for various sealing applications; Thermolast K LW/ PA (lightweight plus adhesion to polyamides), which are rated HB under UL94, are suitable for power tools, among other things.
“3M Glass Bubbles have been tried and tested
Left: Car mat in Zylog’s new Neoflex 8150-02 is 1.8m long
IMAGE: ZYLOG ELASTOCOMP
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