Patent JPS613118A successfully refreshed from Google Patents.
US3661322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package seal
Assignee: Kraft Inc
•
Filing: 1970-04-06
•
Granted: 1972-05-09
•
Expires: 1990-04-06
Abstract
Abstract The invention discloses a packaging development providing enhanced resistance to splitting or opening of a seam or seal in a multi-ply wall flexible film package. A chub package having a cylindrical multi-ply wall of flexible film gathered at the end by clenched metal bands is set forth, the package having a seal formed at offsetting marginal strips on the inner and outer plies of the multi-ply wall. In a preferred method of forming a package, a marginal strip on each ply is offset from an adjacent edge of the adjacent ply prior to forming the seal and the seal is formed by heat sealing the marginal strips to opposite edges of the same ply.
Inventors
- 👤 Donald E Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:09
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/36; B29C53/38; B29C53/382; B29C65/00; B29C65/02; B29C65/04; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/4322; B29C66/49; B29C66/70; B29C66/72; B29C66/723; B65; B65D; B65D75/00; B65D75/26; B29C66/71; B29L; B29L2009/00; Y; Y10; Y10S; Y10S383/00; Y10S383/906
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
110 words
A chub package comprising a substantially cylindrical multiply wall formed with an inner ply and an outer ply, each of said plies being of heat sealable material, said plies initially being unlaminated to each other when formed into said multi-ply wall, clenching means securing and gathering said plies at both ends of the package to form end seals and longitudinally extending seal means for said wall having adjacent longitudinally extending inner and outer heat seals, said inner heat seal being formed at overlapped edges of said inner ply of heat sealable material and said outer heat seal being formed at overlapped edges of said outer ply of heat sealable material.
Claim 2
Dependent Claim
110 words
A chub package comprising a substantially cylindrical multiply wall formed with an inner ply and an outer ply, each of said plies being of heat sealable material, said plies initially being unlaminated to each other when formed into said multi-ply wall, clenching means securing and gathering said plies at both ends of the package to form end seals and longitudinally extending seal means for said wall having adjacent longitudinally extending inner and outer heat seals, said inner heat seal being formed at overlapped edges of said inner ply of heat sealable material and said outer heat seal being formed at overlapped edges of said outer ply of heat sealable material.
Claim 3
Dependent Claim
66 words
A chub package in accordance with claim 1 in which said inner and outer plies are each formed of two layers, one layer of which is of a heat sealable material, and in which said inner and outer plies are formed with substantially the same width and are circumferentially displaced relative to one another to provide offset marginal strips for forming said inner and outer seals.
Claim 4
Dependent Claim
34 words
A chub package in accordance with claim 2 in which a reinforcing ply is disposed intermediate said inner and outer plies and in which said reinforcing ply terminates circumferentially short of said marginal strips.
Claim 5
Dependent Claim
21 words
A chub package in accordance with claim 2 in which another seal is formed circumferentially intermediate said inner and outer seals.
Claim 6
Dependent Claim
37 words
A chub package in accordance with claim 4 in which said inner and outer plies are formed of saran with a heat sealable coating thereon and in which said inner, outer and intermediate seals are heat seals.
Claim 7
Independent Claim
101 words
A method of making a chub package comprising the steps of arranging inner and outer plies having a heat sealable coating thereon with the coatings facing towards each other and with a marginal strip on each ply offset from an adjacent edge of the opposite ply, forming said plies into a tube and aligning said marginal strips with an opposite edge portion of its respective ply, heat sealing said marginal strips to said edge portions to form first and second seals for the respective plies, and clenching the tubular package at longitudinally spaced locations to form end seals for said package.
Claim 8
Independent Claim
101 words
A method of making a chub package comprising the steps of arranging inner and outer plies having a heat sealable coating thereon with the coatings facing towards each other and with a marginal strip on each ply offset from an adjacent edge of the opposite ply, forming said plies into a tube and aligning said marginal strips with an opposite edge portion of its respective ply, heat sealing said marginal strips to said edge portions to form first and second seals for the respective plies, and clenching the tubular package at longitudinally spaced locations to form end seals for said package.
Claim 9
Dependent Claim
22 words
A method in accordance with claim 6 including the step of forming another heat seal intermediate said first and second heat seals.
Claim 10
Dependent Claim
47 words
A method in accordance with claim 7 including the step of inserting a reinforcing ply between said inner and outer plies prior to the forming of said plies into a tubular shape, and spacing the edges of said intermediate ply from said first and second heat seals.
Claim 11
Dependent Claim
93 words
In a package having a multi-ply wall formed with an inner ply and an outer ply, each of said plies being of heat sealable material, said plies initially being unlaminated to each other when formed into said multi-ply wall, the improvement comprising a longitudinally extending seal means having adjacent longitudinally extending first and second heat seals, said first heat seal being formed by overlapped edge portions of said inner ply of heat sealable material and said second heat seal being formed by overlapped edge portions of said outer ply of heat sealable material.
Claim 12
Dependent Claim
93 words
In a package having a multi-ply wall formed with an inner ply and an outer ply, each of said plies being of heat sealable material, said plies initially being unlaminated to each other when formed into said multi-ply wall, the improvement comprising a longitudinally extending seal means having adjacent longitudinally extending first and second heat seals, said first heat seal being formed by overlapped edge portions of said inner ply of heat sealable material and said second heat seal being formed by overlapped edge portions of said outer ply of heat sealable material.
Claim 13
Dependent Claim
165 words
A chub package comprising a substantially cylindrical multi-ply wall formed with an inner ply and an outer ply, said inner and outer plies being formed of saran with a heat sealable coating thereon, means securing and gathering said plies at the ends of the package to form end seals, said inner and outer plies having substantially the same width and being circumferentially displaced relative to one another to provide off-set marginal strips, a longitudinally extending seal means having adjacent longitudinally extending inner and outer seals, said inner seal being formed by an overlapped edge of said inner ply and said marginal strip of said inner ply and said outer seal being formed by an overlapped edge of said outer ply and said marginal strip of said outer ply, a reinforcing ply being disposed intermediate said inner and outer plies, said reinforcing ply terminating circumferentially short of said marginal strips, and another seal formed intermediate said inner and outer seals joining said inner and outer plies.
Claim 14
Dependent Claim
165 words
A chub package comprising a substantially cylindrical multi-ply wall formed with an inner ply and an outer ply, said inner and outer plies being formed of saran with a heat sealable coating thereon, means securing and gathering said plies at the ends of the package to form end seals, said inner and outer plies having substantially the same width and being circumferentially displaced relative to one another to provide off-set marginal strips, a longitudinally extending seal means having adjacent longitudinally extending inner and outer seals, said inner seal being formed by an overlapped edge of said inner ply and said marginal strip of said inner ply and said outer seal being formed by an overlapped edge of said outer ply and said marginal strip of said outer ply, a reinforcing ply being disposed intermediate said inner and outer plies, said reinforcing ply terminating circumferentially short of said marginal strips, and another seal formed intermediate said inner and outer seals joining said inner and outer plies.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |