TPE compounds with adhesion for 2K nylon applications


With the growing demand for TPE materials with higher performance properties in application and processing, especially in the consumer electronics and premium lifestyle products sectors, KRAIBURG TPE has extended its portfolio of Thermolast K. The new compounds are designed to deliver velvety, satin-smooth surfaces, superior adhesion in two-component applications with polar thermoplastics and outstanding mechanical performance properties, says the TPE maker. The new materials also boast high scratch and abrasion resistance, good chemical compatibility and UV-stability as well as easy processing at high injection rates.

Addressing the particular needs of premium lifestyle products, the compounds will make their debut at Vietnamplas 2017, to be held from 13-16 September in Vietnam, where KRAIBURG TPE will introduce its Thermolast K materials of the VS/AD/HM series developed to meet this trend.

These TPE compounds address particular market and customer challenges, including injection moulding properties, such as excellent flow for high injection rates and short cycle times. In addition, they demonstrate superior adhesion to polar thermoplastics in two-component applications not only with PC, ABS, PC/ABS blends, PU, ASA and SAN, but also with PA12 und PA6.

The new VS/AD/HM compounds feature high scratch and abrasion resistance as well as durable compatibility with chemicals typically tested in the consumer electronics industry, including human skin lipids (sebum), cream and common household cleaners. They have also proven good skin compatibility in irritation tests in relation to ISO 10993-10.

The first products of this advanced TPE technology combine a Shore A hardness in the range of 61 to 72 with a tensile strength up to 15 MPa and a tear strength up to 30 N/mm. They provide very high elongation at break (600 %) and peel strength, also giving them the perfect fit for very thin elastomer overmouldings.

Together with ease of colouring and colour stability, these properties open virtually unlimited design possibilities for a wide range of different premium applications, says the German TPE maker.

Typical applications for the new compounds include game console controllers, remote controls and headphones, protective sleeves for mobile phones and tablets and toys. Due to the satin-smooth and velvety surfaces, the compounds are also an ideal choice for premium cosmetic packaging applications. With good UV-stability and values below 900 ppm in chlorine/bromine testing, the TPEs also meet essential requirements for automotive interior parts, such as control wheels and handles.


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