US3899378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing rubber-plastics composites
Assignee: Dunlop Ltd
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Filing: 1974-03-05
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Granted: 1975-08-12
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Expires: 1994-03-05
Abstract
Abstract A rubber-plastics composite is made by friction welding a thermoplastic component to a compatible vulcanized rubber component. The method has advantages and uses in applications where rubber-plastics bonds are required, of which the following is a Specification.
Inventors
- 👤 Reginald Trevor Wragg
- 👤 James Frank Yardley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:37
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/121; B; B05; B05C; B05C1/00; B05C1/003; B05C1/04; B05C1/06; B05D; B05D1/00; B05D1/26; B29; B29C; B29C65/00; B29C65/02; B29C65/06; B29C66/00; B29C66/70; B29C66/71; B29C66/712; B29C66/72; B29C66/723; B29C66/73; B29C66/737; B29C66/7375; B29C66/73753; B29C66/73755; B29C66/739; B29C66/7392; B29C66/7394; B29C59/00; B29C59/08; B29C59/10; B29C59/16; B29C65/0609; B29C65/0618; B29C65/0627; B29C66/7232; B29C66/72321; B29K; B29K2007/00; B29K2009/00; B29K2011/00; B29K2019/00; B29K2021/00; B29K2023/00; B29K2023/38; B29K2025/00; B29K2027/00; B29K2031/00; B29K2033/00; B29K2035/00; B29K2055/00; B29K2061/00; B29K2063/00; B29K2067/00; B29K2069/00; B29K2071/00; B29K2075/00; B29K2077/00; B29K2081/00; B29K2096/00; B29K2105/00; B29K2105/0005; B29K2105/06; B29K2105/24; B29L; B29L2031/00; B29L2031/48; B29L2031/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
238 words
A METHOD OF PRODUCING A TUBBER-PLASTICS COMPOSITE BY RELATIVE MOVEMENT OF A THERMOPLASTIC PLASTICS COMPONENT IN FRICTION CONTACT WITH A COMPATIBLE VULCANIZED RUBBER COMPONENT UNTIL THE PLASTICS SURFACE IN CONTACT WITH THE RUBBER COMPONENT MELTS, AND THEN ALLOWING THE PLASTICS SURFACE TO SOLIDIFY IN CONTACT WITH THE RUBBER COMPONENT, SAID COMPATIBLE PLASTICS AND RUBBER COMPONENTS SELECTED FROM THE GROUP CONSISTING OF SUBSTANTIALLY LINEAR CRYSTALLINE LOW PRESSURE SOLUTION OLEFIN POLYMERS WITH ETHYLENE/ALPHA-MONO-OLEFIN COPOLYMER OR ETHYLENE/ALPHA-MONO-OLEFIN/DIOLEFIN TERPOLYMER COMPOSISTIONS CONTAINING UP TO 70 PERCENT POLYMER, LOW DENSITY POLYETHYLENE OR A CRYSTALLINE COPOLYMER OF ETHYLENE WITH A VINYL ALKANOIC ESTER, AN ALKYL ACRYLATE OR A VINYL HALIDE, WITH ETHYLENE/ALPHA-MONO-OLEFIN COPOLYMER OR ETHYLENE/ALPHA-MONO-OLEFIN/DIOLEFIN TERPOLYMER COMPOSISTIONS CONTAINING UP TO 55 PERCENT POLYMER, POLY(ETHYLENE TEREPHTHALATE) OR POLY(TETRAMETHYLENE TEREPHTHALATE) WITH POLYEPICHLORHYDRIN, STYRENE/BUTADIENE RUBBER, NITRILE RUBBER, POLYBUTADIENE RUBBER OR EPICHLORHYDRIN/ETHYLENE OXIDE RUBBER, POLAR ELASTOPLASTIC LINEAR BLOCK COPOLYMERS CONTAINING POLYESTER BLOCKS AND POLYETHER BLOCKS WITH POLYEPICHLORHYDRIN, EPICHLORHYDRIN/ETHYLENE OXIDE RUBBER, NATURAL RUBBER, STYRENE/BUTADIENE RUBBER, NITRILE RUBBER, POLYURETHANE RUBBER, ACRYLATE RUBBER, POLYCHLOROPRENE, PROPYLENE OXIDE/UNSATRUATED EPOXIDE RUBBER OR POLYBUTADIENE RUBBER, POLYAMIDES WITH POLYEPICHLORHYDRIN, SULPHUR-CURED POLYURETHANE, NITRILE RUBBER, VINYLIDENE FLUORIDE FLUORO-ELASTOMER, NATURAL RUBBER, POLYCHLOROPRENE, TRANS-POLYPENTENAMER, STYRENE/BUTADIENE RUBBER OR POLYBUTADIENE RUBBER, POLYCARBONATES WITH NITRILE RUBBER, POLYEPICHLORHYDRIN OR POLYBUTADIENE RUBBER, VINYL CHLORIDE POLYMERS WITH NITRILE RUBBER, POLY(VINYLIDENE FLUORIDE) WITH ACRYLATE RUBBER, STYRENE/ACRYLONITIRLE COPOLYMER WITH NITRILE RUBBER, METHYL METHACRYLATE RESIN WITH POLYEPIOCHLORHYDRIN OR NITRILE TUBBER, POLY(CHLOROTRIFLUOROETHYLENE) WITH STRYENE/BUTADIENE RUBBER, POLYURETHANE PLASTICS WITH STYRENEBUTADIENE RUBBER OR NATURAL RUBBER, AND POLYFORMALDEHYDE WITH POLYEPICHLORHYDRIN OR EPICHLORHYDRIN/ETHYLENE OXIDE RUBBER.
Claim 2
Independent Claim
238 words
A METHOD OF PRODUCING A TUBBER-PLASTICS COMPOSITE BY RELATIVE MOVEMENT OF A THERMOPLASTIC PLASTICS COMPONENT IN FRICTION CONTACT WITH A COMPATIBLE VULCANIZED RUBBER COMPONENT UNTIL THE PLASTICS SURFACE IN CONTACT WITH THE RUBBER COMPONENT MELTS, AND THEN ALLOWING THE PLASTICS SURFACE TO SOLIDIFY IN CONTACT WITH THE RUBBER COMPONENT, SAID COMPATIBLE PLASTICS AND RUBBER COMPONENTS SELECTED FROM THE GROUP CONSISTING OF SUBSTANTIALLY LINEAR CRYSTALLINE LOW PRESSURE SOLUTION OLEFIN POLYMERS WITH ETHYLENE/ALPHA-MONO-OLEFIN COPOLYMER OR ETHYLENE/ALPHA-MONO-OLEFIN/DIOLEFIN TERPOLYMER COMPOSISTIONS CONTAINING UP TO 70 PERCENT POLYMER, LOW DENSITY POLYETHYLENE OR A CRYSTALLINE COPOLYMER OF ETHYLENE WITH A VINYL ALKANOIC ESTER, AN ALKYL ACRYLATE OR A VINYL HALIDE, WITH ETHYLENE/ALPHA-MONO-OLEFIN COPOLYMER OR ETHYLENE/ALPHA-MONO-OLEFIN/DIOLEFIN TERPOLYMER COMPOSISTIONS CONTAINING UP TO 55 PERCENT POLYMER, POLY(ETHYLENE TEREPHTHALATE) OR POLY(TETRAMETHYLENE TEREPHTHALATE) WITH POLYEPICHLORHYDRIN, STYRENE/BUTADIENE RUBBER, NITRILE RUBBER, POLYBUTADIENE RUBBER OR EPICHLORHYDRIN/ETHYLENE OXIDE RUBBER, POLAR ELASTOPLASTIC LINEAR BLOCK COPOLYMERS CONTAINING POLYESTER BLOCKS AND POLYETHER BLOCKS WITH POLYEPICHLORHYDRIN, EPICHLORHYDRIN/ETHYLENE OXIDE RUBBER, NATURAL RUBBER, STYRENE/BUTADIENE RUBBER, NITRILE RUBBER, POLYURETHANE RUBBER, ACRYLATE RUBBER, POLYCHLOROPRENE, PROPYLENE OXIDE/UNSATRUATED EPOXIDE RUBBER OR POLYBUTADIENE RUBBER, POLYAMIDES WITH POLYEPICHLORHYDRIN, SULPHUR-CURED POLYURETHANE, NITRILE RUBBER, VINYLIDENE FLUORIDE FLUORO-ELASTOMER, NATURAL RUBBER, POLYCHLOROPRENE, TRANS-POLYPENTENAMER, STYRENE/BUTADIENE RUBBER OR POLYBUTADIENE RUBBER, POLYCARBONATES WITH NITRILE RUBBER, POLYEPICHLORHYDRIN OR POLYBUTADIENE RUBBER, VINYL CHLORIDE POLYMERS WITH NITRILE RUBBER, POLY(VINYLIDENE FLUORIDE) WITH ACRYLATE RUBBER, STYRENE/ACRYLONITIRLE COPOLYMER WITH NITRILE RUBBER, METHYL METHACRYLATE RESIN WITH POLYEPIOCHLORHYDRIN OR NITRILE TUBBER, POLY(CHLOROTRIFLUOROETHYLENE) WITH STRYENE/BUTADIENE RUBBER, POLYURETHANE PLASTICS WITH STYRENEBUTADIENE RUBBER OR NATURAL RUBBER, AND POLYFORMALDEHYDE WITH POLYEPICHLORHYDRIN OR EPICHLORHYDRIN/ETHYLENE OXIDE RUBBER.
Claim 3
Dependent Claim
22 words
Method according to claim 1 wherein the relative movement is selected from the group consisting of rotary, angular and linear mechanical movement.
Claim 4
Dependent Claim
22 words
Method according to claim 1 wherein the melting point of the plastics component is below the temperature at which the rubber degrades.
Claim 5
Dependent Claim
36 words
Method according to claim 1 wherein the component surfaces are relatively moved in contact for from 1 to 10 seconds and the pressure between the surfaces during the relative movement is from 100 to 500 kN/m2.
Claim 6
Dependent Claim
21 words
Method according to claim 1 wherein the relative movement is continuous rotary movement at from 650 to 3000 revolutions per minute.
Claim 7
Dependent Claim
22 words
Method according to claim 1 wherein the relative movement is oscillatory linear movement at a frequency of from 50 to 200 Hz.
Claim 8
Dependent Claim
21 words
Method according to claim 1 wherein at least one of the components is frozen to harden it for the relative movement.
Claim 9
Dependent Claim
17 words
Method according to claim 1 wherein a lubricant is applied between the component surfaces to be bonded.
Claim 10
Dependent Claim
129 words
Method according to claim 1 wherein the substantially linear crystalline low pressure solution olefin polymer is selected from the group consisting of high density polyethylene, polypropylene and copolymers of ethylene or propylene with each other or with a minor amount of butene-1, hexene-1 or a diene such as butadiene, the vinyl alkanoic ester is vinyl acetate, the alkyl acrylate is ethyl acrylate, the vinyl halide of the ethylene copolymer is vinyl chloride, the polyamide has from 3 to 12 methylene groups between the amide groups, the polycarbonate is a polyester of carbonic acid which is derived from dihydroxyl compounds in whicH the hydroxyl groups are directly attached to aromatic rings, and the vinyl chloride polymer is selected from the group consisting of poly(vinyl chloride), poly(vinyl dichloride) and poly(vinylidene chloride).
Claim 11
Dependent Claim
46 words
Method according to claim 1 wherein the rubber component surface to be bonded is pre-treated by a treatment selected from the group consisting of acidified sodium hypochlorite, concentrated nitric acid, aqueous solution of trichloroisocyanuric acid, sodium dichloroisocyanuric acid, 4(p-carboxyphenyl-1,3,5-triazoline-2,4-dione solution, UV irradiation, glow discharge and flame-treatment.
Claim 12
Dependent Claim
36 words
Method according to claim 1 wherein the plastics component surface to be bonded is pre-treated with an agent selected from the group consisting of acidified sodium hypochlorite, aqueous solution of trichloroisocyanuric acid and sodium dichloroisocyanuric acid.
Claim 13
Dependent Claim
24 words
The method according to claim 8 wherein said lubricant is selected from the group consisting of a silicone, poly(tetrafluoroethylene) and a rubber processing oil.
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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |