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Self-opening closure for composite packagings or for container or bottle nozzles for sealing with film material

  • US 7,458,486 B2
  • Filed: 06/17/2003
  • Issued: 12/02/2008
  • Est. Priority Date: 06/20/2002
  • Status: Active Grant
First Claim
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1. A self-opener closure for composite packagings or for container spouts to be closed with film material, comprising:

  • a pour-out spout capable of being sealingly assembled onto a composite packaging, a container spout or bottle spout closed with a film material;

    rotary cap for said pour-out spout; and

    ,a self-opener sleeve within said pour-out spout, said self-opener sleeve being rotatable via said rotary cap, and having at a lower edge and projecting from said lower edge of self-opener sleeve, least one combined piercing and cutting member, said self-opener sleeve, said pour-out spout and said rotary cap being equipped with guide and transmission means cooperating with one another, so that upon rotating said rotary cap for an initial time in a direction for opening, said self-opener sleeve is pushable axially downwards in said pour-out spout, the initial time, being without rotation, and for subsequent times, following the initial time, being rotatable about a rotary axis of said self-opener sleeve without axial movement.

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