Patent US2143260A successfully refreshed from Google Patents.
US4530732A
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US
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Method of making extrudable thermoplastic molding material for manufacturing plastic sheeting used in protective covers, especially for vehicles and parts thereof
Assignee: Individual
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Filing: 1983-03-17
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Granted: 1985-07-23
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Expires: 2003-03-17
Abstract
Abstract Extrudable thermoplastic molding material for manufacturing plastic sheeting used in protective covers, especially for vehicles and parts thereof, characterized in that the extrudable thermoplastic molding material for the manufacture of plastic sheeting is a combination of different polyethylenes and olyamides consisting of 1. at least 45% by weight of linear polyethylene (LLDPE), 2. 10-50% by weight of high-pressure polyethylene (LDPE), 3. 0.5-10% by weight of low-pressure polythylene (HDPE), 4. 0.1-5% by weight of olyamides or eurocamides and natural silica, and 5. up to 5% by weight of fatty-acid esters, dyes, synthetic silicic acid, stabilizers, and processing agents, with the sum of 1-5 always being 100% by weight and method of manufacturing from this material a plastic sheeting that is highly elastic, grip-resistant, and smooth.
Inventors
- 👤 Jorg Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:16
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/16; C08K5/20; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815; B; B29; B29C; B29C48/00; B29C48/001; B29C48/0022; B29C48/03; B29C48/07; B29C48/08; B29K; B29K2023/00; B29K2105/00; B29K2105/06; B29K2105/16; C08L2205/00; C08L2205/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A method for producing an extrudable thermoplastic mass to make plastic sheet for the fabrication of protective coverings, particularly for vehicles and vehicle parts, comprising the steps of: mixing in a constituent mixer at least 45% by weight of linear polyethylene, (LLDPE), 10-50% by weight of high-pressure polyethylene (LDPE), 0.5-10% by weight of low-pressure polyethylene (HDPE), 0.1-5% by weight of olyamides or eurocamides and natural silica, and up to 5% by weight of fatty-acid esters, dyes, synthetic silicic acid, stabilizers, and processing agents, the sum of the mixed constituents being always 100% by weight, plasticizing said mixture, and extruding the plasticized mixture into a highly elastic, grip-resistant, smooth mass having high puncture resistance and minimum thickness.
Claim 2
Independent Claim
116 words
A method for producing an extrudable thermoplastic mass to make plastic sheet for the fabrication of protective coverings, particularly for vehicles and vehicle parts, comprising the steps of: mixing in a constituent mixer at least 45% by weight of linear polyethylene, (LLDPE), 10-50% by weight of high-pressure polyethylene (LDPE), 0.5-10% by weight of low-pressure polyethylene (HDPE), 0.1-5% by weight of olyamides or eurocamides and natural silica, and up to 5% by weight of fatty-acid esters, dyes, synthetic silicic acid, stabilizers, and processing agents, the sum of the mixed constituents being always 100% by weight, plasticizing said mixture, and extruding the plasticized mixture into a highly elastic, grip-resistant, smooth mass having high puncture resistance and minimum thickness.
Claim 3
Dependent Claim
69 words
A method as defined in claim 1, wherein said mixture is extruded into a tube of sheeting to a length that is as long as a plurality of protective covers, cutting the tube of sheeting along its length; joining the two webs lying against each other by a welded seam, and perforating at intervals corresponding to the length of the protective cover so that the covers can be separated.
Claim 4
Dependent Claim
35 words
A method as defined in claim 2, including the steps of folding the tube with seams and perforations longitudinally, and winding into a supply roll from which individual protective covers may be severed as needed.
Claim 5
Dependent Claim
29 words
A method as defined in claim 2, wherein said sheeting is stretchable to substantially 20-50% of its size, said sheeting being extrudable to a thickness of substantially 8 μm.
References Cited (Backward Citations)
GB816931A
Cited
US3286005A
Cited
US3299194A
Cited
US3645822A
Cited
US3679126A
Cited
US3713965A
Cited
US3891737A
Cited
US4054474A
Cited
US4247509A
Cited
US4277594A
Cited
US4327009A
Cited
JPS57144717A
Cited
US4394474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |