US3770540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of splicing two laminated packaging materials together
Assignee: Tetra Pak AB
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Filing: 1970-01-12
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Granted: 1973-11-06
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Expires: 1990-01-12
Abstract
Abstract Method and apparatus to splice laminated packaging material which has at least one thermoplastic layer. The packaging material is torn so that one of the layers is severed and the thermoplastic layer is stretched so that it projects beyond the severed layer and will readily heat seal to another laminated strip which has a thermoplastic layer.
Inventors
- 👤 A Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:56
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/228; B29C66/00; B29C66/004; B29C66/0042; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/72; B29C66/723; B29C66/73; B29C66/731; B29C66/7316; B29C66/73161; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81457; B29C66/816; B29C66/8161; B29C66/82; B29C66/822; B29C66/8221; B29C66/83; B29C66/832; B29C66/8324; B29C66/84; B29C66/861; B65; B65H; B65H21/00; B29C66/432; B29C66/4322; B29C66/7232; B29C66/72321; B29C66/72327; B29C66/72328; B29C66/812; B29C66/8122; B29L; B29L2009/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A method of splicing two laminated packaging materials together, each of which has at least two layers of material, one of each of said layers being thermoplastic comprising the steps of: tearing one of the materials to sever the layers thereof, stretching the thermoplastic layer beyond the severed end of the material to provide a rough plastic tongue, placing a second laminated material having a thermoplastic layer on top of the severed material with the thermoplastic layer of the second material facing the rough plastic tongue and heat sealing the rough plastic tongue to the thermoplastic layer of the second material.
Claim 2
Independent Claim
101 words
A method of splicing two laminated packaging materials together, each of which has at least two layers of material, one of each of said layers being thermoplastic comprising the steps of: tearing one of the materials to sever the layers thereof, stretching the thermoplastic layer beyond the severed end of the material to provide a rough plastic tongue, placing a second laminated material having a thermoplastic layer on top of the severed material with the thermoplastic layer of the second material facing the rough plastic tongue and heat sealing the rough plastic tongue to the thermoplastic layer of the second material.
References Cited (Backward Citations)
US3449186A
Cited
US3486964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |