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WINDOW CONTAINER PACKAGING MATERIAL

  • US 3,591,069 A
  • Filed: 10/29/1969
  • Issued: 07/06/1971
  • Est. Priority Date: 10/29/1969
  • Status: Expired due to Term
First Claim
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1. A packaging material for containers having windows therein comprising, a single base sheet having a window opening defined in a predetermined area thereof, a transparent window sheet having a membrane portion covering the window opening and having marginal portions secured to one side of the base sheet adjacent the window opening, and a layer of transparent film covering and bonded to at least the membrane portion of the window sheet and the adjacent portions of the base sheet surrounding the window opening.

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