# US 10,501,662 B2 · Bonding method and conveyor belt

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- Number: US 10,501,662 B2
- Document ID: US10501662B2
- Status: Granted
- Kind: B2
- Application number: 15/533,313
- Filed: 2015-12-03
- Published: 2017-12-21
- Granted: 2019-12-10
- Earliest claimed: 2014-12-05
- Assignees: The Yokohama Rubber Co., Ltd.
- Applicants: The Yokohama Rubber Co., Ltd.
- Inventors: Deqing Zou
- Web page: https://patentgrep.com/patent/US10501662B2

## CPC

- C09J 123/08: Copolymers of ethene (C09J123/16 takes precedence)
- B29C 65/48: using adhesives {, i.e. using supplementary joining material; solvent bonding}
- C08J 5/121: {by heating}
- C08J 5/124: {using adhesives based on a macromolecular component}
- C08K 3/04: Carbon
- C08K 5/14: Peroxides
- C08L 23/08: Copolymers of ethene (C08L23/16 takes precedence)
- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- C09J 5/00: Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J 5/06: involving heating of the applied adhesive
- C09J 11/06: organic
- C09J 123/0807: {Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms}
- F16G 3/10: Joining belts by sewing, sticking, vulcanising, or the like; Constructional adaptations of the belt ends for this purpose
- C08J 2323/16: Ethene-propene or ethene-propene-diene copolymers
- C08J 2323/18: Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08J 2423/16: Ethene-propene or ethene-propene-diene copolymers
- C08J 2423/18: Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08K 2003/2296: {of zinc}
- C08K 2201/014: Additives containing two or more different additives of the same subgroup in C08K
- C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
- C08L 2205/03: containing three or more polymers in a blend
- C09J 2423/16: Presence of ethen-propene or ethene-propene-diene copolymers
- C09J 2423/166: in the substrate
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- F16G: BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR

## Abstract

A method is provided for adhering prescribed adherend rubbers to one another using a rubber for adhesion obtained from a rubber composition for adhesion containing an ethylene-α-olefin copolymer (X2) and an organic peroxide (Y2) at the adhesion interface between the adherend rubbers. The ethylene-α-olefin copolymer (X2) contained in the rubber composition for adhesion contains an ethylene-1-butene copolymer. The ethylene-1-butene copolymer satisfies prescribed values of the number average molecular weight and the molecular weight distribution. The content of the ethylene-1-butene copolymer is from 60 to 100 mass % of the total mass of the ethylene-α-olefin copolymer (X2).

## Claims

### Claim 1

A method of adhering vulcanized adherend rubbers, obtained from a rubber composition for an adherend containing an ethylene-α-olefin copolymer (X1) and an organic peroxide (Y1), to one another using a rubber for adhesion obtained from a rubber composition for adhesion comprising at least one ethylene-α-olefin copolymer (X2) and an organic peroxide (Y2) at an adhesion interface between the adherend rubbers;
the at least one ethylene-α-olefin copolymer (X2) contained in the rubber composition for adhesion comprising an ethylene-1-butene copolymer;
the ethylene-1-butene copolymer having a number average molecular weight (Mn) of not less than 80000 and a molecular weight distribution (Mw/Mn) of not greater than 3 as determined from a weight average molecular weight (Mw) and the number average molecular weight (Mn); and
a content of the ethylene-1-butene copolymer being from 60 to 70 mass % of a total mass of the at least one ethylene-α-olefin copolymer (X2) contained in the rubber composition for adhesion;
wherein the rubber composition for adhesion is an unvulcanized rubber composition.

### Claim 2 (depends on 1)

The method according to claim 1, wherein an ethylene content of the ethylene-1-butene copolymer is from 50 to 90 mass %.

### Claim 3 (depends on 2)

The method according to claim 2 used in bonding of conveyor belts to one another.

### Claim 4 (depends on 3)

A conveyor belt obtained by adhesion by the method described in claim 3.

### Claim 5 (depends on 1)

The method according to claim 1 used in bonding of conveyor belts to one another.

### Claim 6 (depends on 5)

A conveyor belt obtained by adhesion by the method described in claim 5.

### Claim 7 (depends on 1)

The adhesion method according to claim 1, wherein the adhesion interface between the adherend rubbers is an interface where the adherends are overlapped.

### Claim 8 (depends on 1)

The adhesion method according to claim 1, wherein the adhesion interface between the adherend rubbers is an interface where the adherends are overlapped, and the rubber for adhesion is disposed at the adhesion interface and pressed under heating.