Closure Liner Composition With Improved Oxygen Reduction

a technology of oxygen reduction and liner composition, which is applied in the field of liner composition with improved oxygen reduction, can solve the problems of high manufacturing cost and complicated multi-layer devices such as these, and achieve the effect of improving shelf life and superior oxygen reduction properties

Inactive Publication Date: 2015-04-30
HENKEL IP & HOLDING GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0007]The present invention embraces a closure liner composition comprising a mixture (or blend) of a thermoplastic polymer, an oxygen barrier polymer, and a particulate oxygen scavenging material. The oxygen barrier polymer preferably comprises polyisobutylene. The particulate oxygen scavenging material preferably is selected from the group consisting of the alkali ...

Problems solved by technology

With this type of closure liner, the oxygen scavenger will reduce the amount of residual oxygen in the headspace of the container upon filling, as well as consume any external oxygen that permeates through the closure.
A multilayer de...

Method used

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  • Closure Liner Composition With Improved Oxygen Reduction

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[0018]Closure liners are prepared from the closure liner compositions shown in Table 1 below. Compositions A and B are prior art compositions for comparison, while composition C is a composition of the present invention. Composition A includes an oxygen scavenging material (sodium sulfite), but does not include an oxygen barrier polymer. Composition B includes an oxygen barrier polymer (polyisobutylene), but does not include an oxygen scavenging material. Composition C includes both an oxygen scavenging material (sodium sulfite) and an oxygen barrier polymer (polyisobutylene).

TABLE 1Amount (parts by weight)IngredientABCControlLDPE13037HDPE26058Ethylene Butylene Copolymer318101018Polyisobutylene43025Styrene-Butadiene-Styrene Copolymer53030White Mineral Oil61515Polydimethyl Siloxane70.50.5Sodium Sulfite (anhydrous; 771LDPE 1070 MN 18C (Total Petrochemicals)2Stamylan HD7108 (Sabic)3Flexirene CL10 (Polimeri) for A; Clearflex MQB0 (Polymeri) for B&C4Butyl 101-3 (Lanxess)5Kraton D1153 ES ...

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Abstract

Disclosed is a closure liner composition comprising a mixture (or blend) of a thermoplastic polymer, an oxygen barrier polymer, and a particulate oxygen scavenging material. The oxygen barrier polymer preferably comprises polyisobutylene. The particulate oxygen scavenging material preferably is selected from the group consisting of an alkali metal salt of sulfite, ascorbate, isoascorbate, and a mixture of two or more of these materials. The closure liner composition may be used to fabricate a liner for a closure (e.g., a metal crown used to cap a bottle) that provides superior oxygen reduction properties and improved shelf life.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a closure liner composition with improved oxygen reduction.[0002]Closures (or caps) for use in food, beverage and pharmaceutical containers are typically made of plastic or metal or both metal and plastic. Such closures generally include a liner (or gasket) on the inner surface to provide a hermetic seal at the container opening. Since many products that are packaged in a container can be adversely affected by the presence of oxygen, it is particularly desirable if the closure liner is formulated to prevent oxygen ingress. Various products are oxygen sensitive and must be protected from oxygen ingress, the most typical one being beer. Such oxygen sensitive products, particularly beer, are typically packaged in a bottle capped with a metal closure (or crown).[0003]Various techniques have been employed to formulate liner compositions to prevent oxygen ingress. In one technique, as described, for example, in U.S. Pat. No...

Claims

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Application Information

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IPC IPC(8): B65D51/24B65D41/02
CPCB65D41/02B65D51/244C09K3/10C09K2003/109C09K2200/0617C09K2200/062
Inventor BONNEL, BERYLBRICOUT, ESTELLE
Owner HENKEL IP & HOLDING GMBH
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