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Wacker shows new liquid silicone rubber at Compamed
15
Nov '16
Wacker, a globally-active chemical company from Germany, is showcasing a new self-adhesive liquid silicone rubber (LSR), SILPURAN 6760/50, that has a low coefficient of friction at this year's Compamed 2016, the trade fair for suppliers and manufacturers of medical technologies, held from November 14 to 17, 2016, in Düsseldorf, Germany, in hall 8A, booth D28.

SILPURAN 6760/50 cures to form an elastomer with a low friction surface, a property which enables self-adhesive LSRs to be used in novel applications. The silicone adheres readily to selected polyesters such as polybutylene terephthalate (PBT). SILPURAN 6760/50 has been designed for injection moulding, making hard/soft components for medical and pharmaceutical applications suitable for cost-effective large-scale production.

SILPURAN 6760/50 is an addition-curing silicone rubber. It has two components and, once mixed, cures to form a transparent, mechanically robust elastomer with a 50 Shore A hardness. After postcuring, the vulcanizate has a coefficient of friction which is between 50 and 70 percent lower than that of standard LSRs of comparable hardness. This makes it possible to use liquid silicone rubber in movable-seal applications. The low coefficient of friction also facilitates the fitting of silicone components into medical devices.

The silicone rubber SILPURAN 6760/50 was specifically designed for the production of parts comprising hard/soft combinations such as those used in the pharmaceutical and medical sectors. They are often made from a hard thermoplastic, which determines the shape, encased in a soft plastic layer. It can be used to cost-effectively injection mould these kinds of parts in large series. As a self-adhesive grade, it does not need any adhesion promoter. It adheres readily to selected polyesters, such as polybutylene terephthalate (PBT), a thermoplastic often used in injection moulding. SILPURAN 6760/50 meets selected test requirements of ISO 10993 and United States Pharmacopeia (USP) Class VI. Postcured parts are suitable for food-contact applications and can be used under the recommendations of the German Federal Institute for Risk Assessment (BfR) and the US Food and Drug Administration (FDA).

The manufacturing process for all SILPURAN silicone products entails ultrafine filtration, visual inspection and cleanroom packaging in antistatic materials. This ensures that SILPURAN meets the special purity requirements of the food and medical-technology sectors. (GK)

Fibre2Fashion News Desk – India

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