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US6499598: Easy opening system for shrunk hermetic bags

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Filing Information

Inventor(s) Mauro Montepiani · Massimo Rigoni · Hughes Wygaerts ·
Assignee(s) Cryovac, Inc. ·
Attorney/Agent(s) Rupert B. Hurley, Jr. ·
Primary Examiner Bryon P. Gehman ·
Application Number US9878441
Filing date 06/11/2001
Issue date 12/31/2002
Prior Publication Data
Predicted expiration date 11/15/2019
U.S. Classifications 206/497  · 383/9  · 383/3  · 206/806  · 383/200  · 206/522  ·
International Classifications --
Kind CodeB2
International Classifications 383 9 · 383 10 · 383 67 · 383200 · 383 3 · 206497 · 2065248 · 206806 · 206522 · 53441 · 53442 ·
Related U.S. Application DataThis is a continuation of U.S. Ser. No. 09/441,176, filed on Nov. 15, 1999, now U.S. Pat. No. 6,260,705.
7 Claims, 3 Drawings


Abstract

A pouch made from a heat-shrinkable, gas-barrier, thermoplastic film is suitable for packaging one or a plurality of items. The pouch has a bottom, two closed side edges, and an open mouth for the introduction of the items to be packaged. The pouch has a first seal connecting the two side edges, the seal being between the bottom of the pouch and the mouth of the pouch. The first seal, portions of the side edges, and the bottom together define a first area. The pouch has a second seal which extends toward the first seal, with the second seal and the bottom defining a second area. The second area has a precut which extends from the bottom toward the second seal.

Independent Claims | See all claims (7)

  1. 1. A pouch of a heat-shrinkable, gas-barrier, thermoplastic film for packaging at least one item, said pouch comprising: a) a bottom; b) first and second closed side edges; c) an open mouth; d) a first seal disposed between the bottom and the open mouth, the first seal connecting the first and second closed side edges; e) a first area defined by the first seal, the bottom, and a portion of the first and second closed side edges; f) a second seal, at least a portion of which extends toward the first seal; g) a second area between the bottom and the second seal; and h) a precut made in the second area, the precut extending from the bottom toward the second seal.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US2245738* TAYLOR IVAN M Taylor Jun 1941
US3354795* KUGLER EMANUEL M Kugler Nov 1967
US3554435* MILPRINT INC Martinez Jan 1971
US3578239 VAC PAC MFG CO Periman May 1971
US3615711* NAT BISCUIT CO Markus et al. Oct 1971
US3663239* NABISCO INC Rowe et al. May 1972
US4555025* W. R. Grace & Co., Cryovac Div. Weinberg et al. Nov 1985
US4576283* FAFOURNOUX BERNARD Fafournoux Mar 1986
US4764028* W. R. Grace & Co. Wood et al. Aug 1988
US5493845 Abbott Laboratories Adolf et al. Feb 1996
US6260705* Cryovac, Inc. Montepiani et al. Jul 2001

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP0078761CROWN ZELLERBACH CORPORATIONMay 1983
EP0372886Du Pont Canada Inc.Jun 1990
EP0745539Cryovac, Inc.Apr 1996
FR2009866DOW CHEMICAL COFeb 1970
JP404339767*Nov 1992
NL6900418Jul 1970
* cited by examiner

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US8021049 Cryovac, Inc. Adrian Maxwell William Smith Sep 2011
US8522978 --
US8794836 --

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US6260705 Cryovac, Inc. Mauro Montepiani et al. Jul 2001
US20010025803 Massimo Rigoni et al. Oct 2001
US6499598 Cryovac, Inc. Mauro Montepiani et al. Dec 2002