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CHLOROBUTYL RUBBER-BASED SELF-RESEALING SEPTUM AND CLOSURE ASSEMBLY

  • US 20130245592A1
  • Filed: 03/12/2013
  • Published: 09/19/2013
  • Est. Priority Date: 03/16/2012
  • Status: Abandoned Application
First Claim
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1. A septum for use in a self-resealing closure assembly for a container containing a non-aqueous liquid, the septum having a laminate structure comprising:

  • a first layer of a resilient material derived from halobutyl rubber and having first and second opposed surfaces, wherein the first layer has a first layer thickness between the first and second opposed surfaces within the range from about 1 mm to about 10 mm; and

    a second layer of a first non-elastic polymer extending across, and bonded to, the first surface of the first layer, wherein the second layer has a second layer thickness within the range from about 0.03 mm to about 1 mm, wherein the laminate structure of the septum is penetrable by a member in an axial direction and a portion of the laminate structure being configured to elastically distend to pass the member through a tear in the septum and to be self-closing by returning opposite edges of the tear to a substantially contiguous closed condition after withdrawal of the member and which maintains a seal following member penetration in an axial direction and withdrawal, and wherein the septum is used for closing an opening in the container.

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