HEXPOL TPE launches new solutions for PA overmolding at CHINAPLAS 2016

Soft-touch overmolding technologies and materials have radically changed the design possibilities for a wide range of consumer and industrial products. They have allowed for the introduction of tactile and non-slip features and expanded color, texture and functional options. 

 

At CHINAPLAS 2016, the global compounding group HEXPOL TPE presents new Dryflex thermoplastic elastomer compounds for PA overmolding. HEXPOL TPE also offers advice on projects using hard and soft material combinations; including TPE and substrate compatibility, product design and processing options at its booth located at Hall N3 Stand A01.

 

For the producers of multi-component applications, it is critical that the parts do not display poor adhesion of the TPE and substrate, which can result in delamination and peeling of the TPE layer. Not all materials are compatible and the chemistry of both the TPE and substrate needs to be considered. Initial overmolding technologies primarily combined a rigid PP substrate with a compatible olefin based TPE. However with the expansion of multi-component designs into new application areas, the demand for TPE compounds that give a cohesive adhesion to a wider range of substrates arose. HEXPOL TPE offer a range of TPE compounds based on different chemistries (for example TPO, TPS and TPV), with grades offering adhesion to a variety of substrates including PP, PE, PA, ABS, PC, PS, PMMA, ASA, SAN and their blends.   

 

 

Of particular interest at CHINAPLAS 2016 are the Dryflex range of TPE compounds for overmolding with Polyamide (PA). Due to its very high strength, impact and high temperature resistance PA is often used in applications such as power-tools. The Dryflex TPE can be used to add safety features such as a non-slip grip or ergonomic handle. The range includes grades offering a high bonding strength to PA6, PA66, PA12 and PA blends including reinforced polyamide with up to 40% glass fiber. The compounds can be processed via insert and multi-shot processing technologies. Due to the wide processing window from 200°C to 280°C, they have a high bonding strength to the different polyamide types.

 

Philippe Julien-Labruyère, sales director for HEXPOL TPE China said that “Toothbrushes, sport equipment, power tools, automotive-interiors, baby products and packaging; these are just a few examples where the introduction of Dryflex TPE has added a non-slip surface, functional sealing, improved haptics or abrasion resistance properties. Our aim at CHINAPLAS 2016 is to show visitors how they can make the most of the significant design and processing opportunities offered by our Dryflex TPE compounds. Our local HEXPOL TPE China team will be on-hand to advise how product and mould design, gates and runners and processing technologies can be optimized”.