US4751121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-ply self-adhesive and deep-drawable protective sheet, especially for automotive vehicles
Assignee: Huels Troisdorf AG
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Filing: 1986-05-28
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Granted: 1988-06-14
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Expires: 2006-05-28
Abstract
Abstract The invention describes a multi-ply, self-adhesive and deep-drawable protective sheet, especially for the internal and external outfitting of automotive vehicles, consisting of a carrier sheet containing a thermoplastic synthetic resin based on an ethylene-propylene-diene terpolymer and/or an ethylene-propylene copolymer and a homo- and/or copolymer of propylene, small amounts of fillers and conventional additives; a pressure-sensitive adhesive layer based on an alkyl acrylate and/or methacrylate and/or a copolymerizable, ethylenically unsaturated monomer, such as acylic acid, and a cover layer of a unilaterally siliconized polyolefin film.
Inventors
- 👤 Werner Kuhnel
- 👤 Manfred Simm
- 👤 Paul Spielau
- 👤 Rudolf Kautz
- 👤 Johan Harmsen
- 👤 Henk van der Mey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:46
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/32; B32B27/06; B32B27/065; B32B27/08; B32B27/16; B32B27/18; B32B27/20; B32B5/00; B32B5/18; B32B7/00; B32B7/04; B32B7/12; B60; B60R; B60R13/00; B60R13/02; C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/14; C08L23/16; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/24; C09J7/241; C09J7/243; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2307/00; B32B2307/70; B32B2307/712; B32B2310/00; B32B2310/14; B32B2323/00; B32B2323/16; B32B2605/00; B32B2605/003; C08L23/12; C09J2203/00; C09J2203/306; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1452; Y10T428/1457; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24959; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249958; Y10T428/28; Y10T428/2839; Y10T428/2852; Y10T428/2878; Y10T428/2891; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31924; Y10T428/31928; Y10T428/31931
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
199 words
A multi-ply, self-adhesive and deep-drawable protective sheet for the internal and external outfitting of automotive vehicles, comprising a carrier sheet containing a thermoplastic synthetic resin, a pressure-sensitive adhesive layer, and a cover layer of a release film on the adhesive layer; said carrier sheet containing 65-25% by weight of at least one partially crystalline non-vulcanized polymer selected from the group consisting of ethylene-propylene-diene terpolymer (EPDM) and ethyolene-propylene copolymer with an ethylene content of at least 65% by weight, with a melt index MFI (230/15) of 0.5-2.0 g/l 0 min. and with a tensile strength of at least 5 N/mm2; 35-75% by weight of at least one propylene polymer selected from the group consisting of homopolymer and a copolymer of propylene with a propylene content of at least 80% by weight, said propylene polymer having a melt index MFI (190/5) of 0.1-1 g/10 min.; 0-10% by weight of filler comprising at least one of chalk, carbon black, silica, and a silicic anhydride; said adhesive layer comprising a crosslinked self-adhesive acrylic based composition containing an at least one of an alkyl acrylate, an alkyl methacrylate and a copolymerizable ethyleneically unsaturated monomer; and said cover layer comprises a unilaterally siliconized polyolefin film.
Claim 2
Dependent Claim
199 words
A multi-ply, self-adhesive and deep-drawable protective sheet for the internal and external outfitting of automotive vehicles, comprising a carrier sheet containing a thermoplastic synthetic resin, a pressure-sensitive adhesive layer, and a cover layer of a release film on the adhesive layer; said carrier sheet containing 65-25% by weight of at least one partially crystalline non-vulcanized polymer selected from the group consisting of ethylene-propylene-diene terpolymer (EPDM) and ethyolene-propylene copolymer with an ethylene content of at least 65% by weight, with a melt index MFI (230/15) of 0.5-2.0 g/l 0 min. and with a tensile strength of at least 5 N/mm2; 35-75% by weight of at least one propylene polymer selected from the group consisting of homopolymer and a copolymer of propylene with a propylene content of at least 80% by weight, said propylene polymer having a melt index MFI (190/5) of 0.1-1 g/10 min.; 0-10% by weight of filler comprising at least one of chalk, carbon black, silica, and a silicic anhydride; said adhesive layer comprising a crosslinked self-adhesive acrylic based composition containing an at least one of an alkyl acrylate, an alkyl methacrylate and a copolymerizable ethyleneically unsaturated monomer; and said cover layer comprises a unilaterally siliconized polyolefin film.
Claim 3
Dependent Claim
41 words
A protective sheet according to claim 1, wherein said adhesive layer has a thickness corresponding to a weight per unit area of about 40-100 g/m 2 and said polyolefin film is a polypropylene film having a thickness of about 50-150 μm.
Claim 4
Dependent Claim
30 words
A protective sheet according to claim 1, wherein the partially crystalline polymer comprises 65-82% by weight of ethylene 18-35% by weight of propylene 0-8% by weight of a diene tercomponent.
Claim 5
Dependent Claim
89 words
A protective sheet according to claim 1 wherein the carrier sheet is produced in a thickness of about 0.2-2 mm by calendering or extrusion of a polymeric admixture containing 60-40% by weight of at least one of EPDM and EPM, 40-60% by weight of at least one of the homopolymer and the copolymer of propylene, 0-6% by weight of the filler, and, per 100 parts by weight of the admixture, 0.1-1.0 part by weight of stabilizer including sterically hindered phenolic antioxidants, phenolic phosphites or, thioesters of aliphatic carboxylic acids,
Claim 6
Dependent Claim
63 words
1-2 parts by weight of lubricant including metallic salts of carboxylic acids, montanic acid esters, or hydrogenated hydrocarbon resins, 0-5 parts by weight of a colorant, 0-4 parts by weight of an aliphatic and/or naphthenic extender oils, said sheet exhibiting in a longitudinal direction a tensile strength of at least 24 N/mm 2 and an elongation of at break of at least 450%.
Claim 7
Dependent Claim
63 words
1-2 parts by weight of lubricant including metallic salts of carboxylic acids, montanic acid esters, or hydrogenated hydrocarbon resins, 0-5 parts by weight of a colorant, 0-4 parts by weight of an aliphatic and/or naphthenic extender oils, said sheet exhibiting in a longitudinal direction a tensile strength of at least 24 N/mm 2 and an elongation of at break of at least 450%.
Claim 8
Dependent Claim
158 words
A protective sheet according to claim 1 wherein the carrier sheet is produced in a thickness of about 0.2-2 mm by calendering or extrusion of a polymeric admixture containing 45-25% by weight of at least one of EPDM and EPM, 75-55% by weight of at least one of the homo-polymer and the copolymer of propylene, 0-6% by weight of the filler, and, per 100 per 100 parts by weight of the admixture, 0.1-1.0 part by weight of stabilizer including sterically hindered phenolic antioxidants, phenolic phosphites, and/or thioesters of aliphatic carboxylic acids, 0.1-2 parts by weight of lubricant including metallic salts of carboxylic acids, montanic acid esters or hydrogenated hydrocarbon resins, - 5parts by weight of a colorant, 0-4 parts by weight of at least one of an aliphatic and naphtheic extender oils, said sheet exhibiting in a longitudinal direction a tensile strength of at least 24 N/mm 2 and an elongation of at break of at least 450%.
Claim 9
Dependent Claim
29 words
A protective sheet according to claim 1, wherein the adhesive layer is provided in a thickness corresponding to a weight per unit area of about 40-100 g/m 2 .
Claim 10
Dependent Claim
26 words
A protective sheet according to claim 1, wherein the carrier sheet is pretreated by means of corona discharge on the side joined to the adhesive layer.
Claim 11
Dependent Claim
22 words
A protective sheet according to claim 1, wherein the cover layer is a polypropylene film having a thickness of about 50-150 μm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |