
US Patent No: 5,129,734
Number of patents in Portfolio can not be more than 2000
Seal system for block cheese
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Jul 14, 1992
Issued date -
Apr 11, 1991
filing date -
07/683,693
serial no -
In Force
status
Importance
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Abstract
A method and apparatus for forming a package for a three dimensional block wherein the package is formed of flexible film doubled along one edge with end seals joining the ends of the film and a reclosable zipper along the other remaining edge with the zipper being longer than the length of the block and longer than the space between the end seals so that as the zipper is opened, a mouth is formed sufficiently large to allow for insertion or removal of the block through the mouth of the package.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,589,145 Packaging material and package | 102 | 1983 | |
| 4,615,045 Pilfer proof hangup bag structure and method | 27 | 1984 | |
| 4,756,629 System for producing non-compatible zipper film | 55 | 1987 | |
| 4,832,505 Tamper evident link bags | 83 | 1988 | |
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| 5,026,563 Zippered closure for thermoformed package | 21 | 1989 | |
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| 4,262,581 Method and apparatus for making printed gusset bags | 19 | 1979 | |
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| 4,709,400 Produce bag with tie tails | 17 | 1986 | |