Patent US4071391A successfully refreshed from Google Patents.
US4071391A
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US
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Method of manufacturing laminated panels or foils of lead and plastics, especially acrylic acid polyethylene copolymers, and laminated panels or foils obtained thereby
Assignee: Bleiindustrie KG
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Filing: 1974-05-06
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Granted: 1978-01-31
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Expires: 1994-05-06
Abstract
Abstract A method of manufacturing laminated panels or foils consisting of a lead sheet and a synthetic sheet by using lead alloyed with antimony and/or coating the lead sheet with an alloy of lead. Optionally a protective film serving as an adhesive may be applied onto the surface that is to be welded to the synthetic material. A novel compound material consisting of a lead sheet and a plastics sheet.
Inventors
- 👤 Gunter Haberstroh
- 👤 Lothar Heistermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:15
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/082; B32B15/085; B32B7/00; B32B7/04; B32B7/12; B32B2311/00; B32B2311/14; B32B2323/00; B32B2323/04; B32B2607/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
In a method for manufacturing a laminate of a polymeric film composed of polyethylene or polyethylene-acrylic acid copolymer and a layer of lead, consisting essentially of marrying the film and lead layer together by passing them through nip rollers, the improvement which comprises said lead layer being coated with a layer of a tin-lead alloy having a tin content in excess of 25 percent, said alloy layer being coated with a protective and adhesive film of a plasticizer for the polymeric film in a diluent prior to being married to the polymer layer.
Claim 2
Dependent Claim
93 words
In a method for manufacturing a laminate of a polymeric film composed of polyethylene or polyethylene-acrylic acid copolymer and a layer of lead, consisting essentially of marrying the film and lead layer together by passing them through nip rollers, the improvement which comprises said lead layer being coated with a layer of a tin-lead alloy having a tin content in excess of 25 percent, said alloy layer being coated with a protective and adhesive film of a plasticizer for the polymeric film in a diluent prior to being married to the polymer layer.
Claim 3
Dependent Claim
93 words
In a method for manufacturing a laminate of a polymeric film composed of polyethylene or polyethylene-acrylic acid copolymer and a layer of lead, consisting essentially of marrying the film and lead layer together by passing them through nip rollers, the improvement which comprises said lead layer being coated with a layer of a lead-antimony alloy, the amount of antimony being 0.6 to 6 percent, said alloy layer being coated with a protective and adhesive film of a plasticizer for the polymeric film in a diluent prior to being married to the polymer layer.
Claim 4
Dependent Claim
93 words
In a method for manufacturing a laminate of a polymeric film composed of polyethylene or polyethylene-acrylic acid copolymer and a layer of lead, consisting essentially of marrying the film and lead layer together by passing them through nip rollers, the improvement which comprises said lead layer being coated with a layer of a lead-antimony alloy, the amount of antimony being 0.6 to 6 percent, said alloy layer being coated with a protective and adhesive film of a plasticizer for the polymeric film in a diluent prior to being married to the polymer layer.
References Cited (Backward Citations)
GB713634A
Cited
US3260410A
Cited
US3582427A
Cited
FR1496048A
Cited
US3505143A
Cited
US3455775A
Cited
US3539427A
Cited
US3607614A
Cited
US3647617A
Cited
US3719551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |