Container closures and processes of making them

Details Container closures and processes of making them Container closures and processes of making them

B - Operations, Transporting

29

C

B29C 65/40 (2006.01) B65D 51/16 (2006.01) B65D 53/06 (2006.01) C09K 3/10 (2006.01)

Patent

CA 2051889

Bottle gaskets are provided from a thermoplastic composition comprising a homogeneous blend of butyl rubber pith other thermoplastic polymer. The gaskets provide an effective seal at a moderate pressure but permit venting at a higher pressure. They can be made by inserting molten heated thermoplastic material into the bottle cap and moulding it in the cap and cooling it to form the gasket.

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