US5229180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser scored package
Assignee: Transcontinental US LLC
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Filing: 1991-10-02
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Granted: 1993-07-20
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Expires: 2011-10-02
Abstract
Abstract A structure for use in making an easy open package comprises a thermoplastic sheet material. The sheet material has a strip of reflective metal on one surface. Over the metal strip on the opposite surface of the sheet material is a score line. The score line may be formed by a laser. The metal strip reflects the laser and provides a score line of more uniform depth and also provides barrier properties in the area of the score line.
Inventors
- 👤 Richard Littmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:25
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/007; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5827; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0838; B29C2791/00; B29C2791/004; B29C2791/009; B29C37/00; B29C37/0053; B29C37/0057; B29C65/00; B29C65/02; B29C65/14; B29C65/16; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/0608; B29K2023/0616; B29K2023/0625; B29K2023/0633; B29K2023/0641; B29K2023/065; B29K2023/08; B29K2023/083; B29K2023/086; B29K2023/10; B29K2023/12; Y; Y10; Y10T; Y10T428/00; Y10T428/15; Y10T428/24; Y10T428/24802; Y10T428/24917
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
A structure for use in making a package comprising a multi-layer thermoplastic sheet material having at least three laminated layers of thermoplastic material, said sheet having upper and lower surfaces and wherein said sheet has a strip of reflective metal on at least a portion of the lower surface of said sheet material, said upper surface of said sheet material having a score in the area above the strip of reflective metal, said score extending through the first layer of the thermoplastic sheet material and through the second layer of the thermoplastic sheet material, and into the third layer of the thermoplastic sheet material.
Claim 2
Dependent Claim
104 words
A structure for use in making a package comprising a multi-layer thermoplastic sheet material having at least three laminated layers of thermoplastic material, said sheet having upper and lower surfaces and wherein said sheet has a strip of reflective metal on at least a portion of the lower surface of said sheet material, said upper surface of said sheet material having a score in the area above the strip of reflective metal, said score extending through the first layer of the thermoplastic sheet material and through the second layer of the thermoplastic sheet material, and into the third layer of the thermoplastic sheet material.
Claim 3
Dependent Claim
15 words
A structure according to claim 1 where said sheet material is scored with a laser.
Claim 4
Dependent Claim
24 words
A structure according to claim 1 wherein said sheet has two opposing sides and said metal strip extends from one side to the other.
Claim 5
Dependent Claim
14 words
A structure according to claim 3 wherein said metal strip is a metal foil.
Claim 6
Dependent Claim
15 words
A structure according to claim 3 wherein said metal strip is formed by vapor deposition.
Claim 7
Dependent Claim
14 words
A structure according to claim 3 wherein said metal strip is a metal ink.
Claim 8
Dependent Claim
17 words
A structure according to claim 3 wherein said metal strip has a coating of ethylene vinyl acetate.
Claim 9
Dependent Claim
11 words
A structure according to claim 1 wherein the score is continuous.
Claim 10
Dependent Claim
11 words
A structure according to claim 1 wherein the score is discontinuous.
Claim 11
Dependent Claim
13 words
A structure according to claim 1 wherein the score is a single line.
Claim 12
Dependent Claim
15 words
A structure according to claim 1 wherein the score is a pair of parallel lines.
Claim 13
Dependent Claim
17 words
A structure according to claim 1 wherein the score extends from one edge to the opposite edge.
References Cited (Backward Citations)
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Cited
US3626143A
Cited
US4363841A
Cited
US4762514A
Cited
US4818588A
Cited
US4931134A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |