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Container closure wth liner and method of producing the same

  • US 5,542,557 A
  • Filed: 08/09/1994
  • Issued: 08/06/1996
  • Est. Priority Date: 05/09/1991
  • Status: Expired due to Term
First Claim
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1. A container closure with a liner comprising a container closure shell and a liner of resin applied to an inner surface of said shell, wherein the liner of resin comprises (i) an upper layer portion which forms a panel, (ii) a lower layer portion which is interposed between said upper layer portion and the shell to join them together and (iii) an outer peripheral portion which forms a hermetically sealing portion, said upper layer portion (i) comprises a resin composition (A) containing additives selected from the group consisting of an oxygen absorbing agent, a drying agent, a deodorant, an antibacterial agent and a thermal color agent, and said lower layer portion (ii) and said outer peripheral portion (iii) are integrally formed and comprise a thermoplastic resin (B) with a cushioning property and elasticity and being free of said additives, said liner being formed by press-molding a molten mass of resin (B) and placing the panel of resin composition (A) onto the molten mass in the container closure shell.

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