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Metal Working

Packaging-material-and-sealing-cap

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Packaging material and sealing cap

Details

Inventors: Hanaya, Toru; Ibi, Masaei;
Assignee: Nippon Film Industrial Co., Ltd. (JP)
Primary Examiner: Kittle; John E.
Assistant Examiner: Seidleck; James J.
Attorney, Agent or Firm:

This invention provides a packaging material comprising a metallic foil and at least one heat-shrinkable film of synthetic resin disposed on at least one surface of the metallic foil, the film being superposed on the metallic foil and comprising superposed portions bonded to the metallic foil and superposed portions to be heat-shrunk and not bonded to the metallic foil, and the portions to be heat-shrunk of the film being shrunk by application of heat and also provides a sealing cap made of the packaging material suitable for sealing the capped mouths of bottles for wine, champagne or the like.

DETAILED DESCRIPTION It is an object of this invention to provide heat-shrinkable packaging materials which are easy to heat-shrink, able to snugly fit around an article or its part to be packaged, free from the undesired buckling and wrinkle caused by heat shrinkage and outstanding in metallic luster.
It is another object of the invention to provide heat-shrinkable packaging materials which have a shape retention sufficient to maintain the desired cap or like shape formed prior to heat shrinkage and which are suitable for sealing the closed opening of containers such as bottles for wine, champagne or the like and also for packaging the whole or part of other various articles.
It is a further object of the invention to provide heat-shrinkable packaging materials which can be relatively easily manufactured at low costs.
Other object and features of the invention will become apparent from the following description.

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