US4699816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive tapes
Assignee: Manuli Autoadesivi SpA
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Filing: 1985-12-17
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Granted: 1987-10-13
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Expires: 2005-12-17
Abstract
Abstract In making pressure sensitive tapes having an olefinic polymer or copolymer support, in particular polypropylene, or a support of coextruded film of an olefinic polymer and of another polymer or copolymer, modification of the adhesive by addition of a mineral or synthetic oil brings about a substantial reduction of noise upon unwinding the tape. Said modification can be combined with modification of the release coat provided on the back of the tape and/or with special treatment of the support back.
Inventors
- 👤 Graziano Galli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:23
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/30; C09J7/38; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/14; Y10T428/1424; Y10T428/28; Y10T428/2809; Y10T428/2839; Y10T428/2843; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
80 words
A method of reducing noise generated upon unwinding a pressure sensitive tape comprising an olefinic polymer or copolymer support, said support having an adhesive side and a back side, said adhesive side having an adhesive coat formed of an adhesive of a conventional elastomer or plastomer, said back side having at least one release coat, said method comprising the step of incorporating into said adhesive coat 0.5 to 30% by weight of a mineral oil or an alkylbenzene synthetic oil.
Claim 2
Independent Claim
80 words
A method of reducing noise generated upon unwinding a pressure sensitive tape comprising an olefinic polymer or copolymer support, said support having an adhesive side and a back side, said adhesive side having an adhesive coat formed of an adhesive of a conventional elastomer or plastomer, said back side having at least one release coat, said method comprising the step of incorporating into said adhesive coat 0.5 to 30% by weight of a mineral oil or an alkylbenzene synthetic oil.
Claim 3
Dependent Claim
24 words
A method according to claim 1, wherein said tape comprises an olefinic polymer or copolymer support coextruded or combined with another polymer or copolymer.
Claim 4
Dependent Claim
14 words
A method according to claim 1, wherein said adhesive side has a priming coat.
Claim 5
Dependent Claim
22 words
A method according to claim 1, wherein the amount of oil incorporated into said adhesive coat is 5 to 15% by weight.
Claim 6
Dependent Claim
21 words
A method according to claim 1, wherein the amount of oil incorporated into said adhesive coat is about 10% by weight.
Claim 7
Dependent Claim
20 words
A method according to claim 1, wherein said oil is a mineral oil of an aromatic, naphthenic or paraffinic type.
Claim 8
Dependent Claim
22 words
A method according to claim 1, wherein said oil is an alkylbenzene oil, in which the alkyl group contains 12-24 carbon atoms.
Claim 9
Dependent Claim
13 words
A method according to claim 1, wherein said support is a polypropylene film.
Claim 10
Dependent Claim
63 words
A method according to claim 1, wherein said support is a polypropylene film coextruded or combined with material selected from the group consisting of a C 2 /C 3 copolymer in random arangement, a type -C 4 polymer and/or a C 3 /C 4 copolymer, and a polymer such as polycarbonate or a copolymer such as ethylene-vinylacetate, ethylene-vinyl alcohol, ethylene-ethylacrylate, or ethylene-acrylic acid.
Claim 11
Dependent Claim
15 words
A method according to claim 1, wherein said release coat consists of a fluorinated compound.
Claim 12
Dependent Claim
28 words
A method according to claim 1, wherein said release coat consists of an adduct obtained by reaction of a silicone compound having reactive terminal groups with an isocyanate.
Claim 13
Dependent Claim
18 words
A method according to claim 11, wherein said silicone compound is modified with polyamide, polyolefin or halogenated resins.
Claim 14
Dependent Claim
21 words
A method according to claim 1, wherein said back side is treated to bring its critical surface tension above 33 dyne/cm.
Claim 15
Dependent Claim
16 words
A method according to claim 13, wherein said treatment is with flame or with corona effect.
Claim 16
Dependent Claim
82 words
A pressure sensitive tape exhibiting reduced noise when unwound, said pressure sensitive tape comprising an olefinic polymer or copolymer support, said support having an adhesive side and a back side, said adhesive side having an adhesive coat and said back side having at least one release coat, said adhesive coat being formed of an adhesive of a conventional elastome or plastomer, said adhesive coat comprising a noise-reducing amount of 5 to 15% by weight of a mineral oil or alkylbenzene synthetic oil.
Claim 17
Dependent Claim
82 words
A pressure sensitive tape exhibiting reduced noise when unwound, said pressure sensitive tape comprising an olefinic polymer or copolymer support, said support having an adhesive side and a back side, said adhesive side having an adhesive coat and said back side having at least one release coat, said adhesive coat being formed of an adhesive of a conventional elastome or plastomer, said adhesive coat comprising a noise-reducing amount of 5 to 15% by weight of a mineral oil or alkylbenzene synthetic oil.
Claim 18
Dependent Claim
26 words
A pressure senstive tape according to claim 15, wherein said tape comprises an olefinic polymer or copolymer support coextruded or combined with another polymer or copolymer.
Claim 19
Dependent Claim
16 words
A pressure sensitive tape according to claim 15, wherein said adhesive side has a priming coat.
Claim 20
Dependent Claim
21 words
A pressure sensitive tape according to claim 15, wherein said oil is present in an amount of about 10% by weight.
Claim 21
Dependent Claim
22 words
A pressure sensitive tape according to claim 15, wherein said oil is a mineral oil of an aromatic, naphthenic or paraffinic type.
Claim 22
Dependent Claim
24 words
A pressure sensitive tape according to claim 15, wherein said oil is an alkylbenzene oil, in which the alkyl group contains 12-24 carbon atoms.
Claim 23
Dependent Claim
15 words
A pressure sensitive tape according to claim 15, wherein said support is a polypropylene film.
Claim 24
Dependent Claim
66 words
A pressure sensitive tape according to claim 15, wherein said support is a polypropylene film coextruded and/or combined with a material selected from the group consisting of a C 2 /C 3 copolymer in random arrangement, a type -C 4 polymer and/or a C 3 /C 4 copolymer, and a polymer such as polycarbonate or a copolymer such as ethylene-vinylacetate, ethylene-vinyl alcohol, ethylene-ethylacrylate, or ethylene-acrylic acid.
Claim 25
Dependent Claim
30 words
A pressure sensitive tape according to claim 15, wherein said release coat consists of an adduct obtained by reaction of a silicone compound having reactive terminal groups with an isocyanate.
Claim 26
Dependent Claim
20 words
A pressure sensitive tape according to claim 15, wherein said silicone compound is modified with polyamide, polyolefin or halogenated resins.
Claim 27
Dependent Claim
23 words
A pressure sensitive tape according to claim 15, wherein said back side is treated to bring its critical surface tension above 33 dyne/cm.
Claim 28
Dependent Claim
18 words
A pressure sensitive tape according to claim 15, wherein said treatment is with flame or with corona effect.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |