Pressure sensitive adhesive sheet for tire

Patent metadata

Field	Value
Publication number	US-10570319-B2
Application number	US-201715470265-A
Country	US
Kind code	B2
Filing date	Mar 27, 2017
Priority date	Mar 31, 2016
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

Provided is a pressure sensitive adhesive sheet for tires that enables continuous and efficient labeling on tires using a labeling apparatus. The pressure sensitive adhesive sheet includes a release material (C), a first pressure sensitive adhesive layer (B1), a first substrate (A1), a second pressure sensitive adhesive layer (B2), and a second substrate (A2), in this order, and satisfies Requirement (1): in a planar view of the pressure sensitive adhesive sheet, the outline of the first pressure sensitive adhesive layer (B1) exists inside the outline of the second substrate (A2); and Requirement (2): the MD stiffness of the second substrate (A2), measured in the Gurley method according to JIS L 1085, is 0.10 mN or more.

First claim

What is claimed is:

1. A pressure sensitive adhesive sheet for tires, comprising:
a release material (C);
a first pressure sensitive adhesive layer (B 1 );
a first substrate (A 1 );
a second pressure sensitive adhesive layer (B 2 ); and
a second substrate (A 2 ),
wherein the release material (C), the first and second pressure sensitive adhesive layers (B 1 , B 2 ), and the first and second substrates (A 1 , A 2 ) are in an order of the release material (C), the first pressure sensitive adhesive layer (B 1 ), the first substrate (A 1 ), the second pressure sensitive adhesive layer (B 2 ), and the second substrate (A 2 ),
the second substrate (A 2 ) is a resin film comprising a thermoplastic resin, where the thermoplastic resin consists of at least one selected from the group consisting of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polystyrene, and nylon, or is a synthetic paper,
in a planar view of the pressure sensitive adhesive sheet, an outline of the first pressure sensitive adhesive layer (B 1 ) exists inside an outline of the second substrate (A 2 ), and
a MD stiffness of the second substrate (A 2 ), measured in the Gurley method according to JIS L 1085, is 0.10 mN or more.

2. The pressure sensitive adhesive sheet for tires according to claim 1 ,
wherein a minimum height h 1 , that is a shortest distance from an edge of a surface of the second pressure sensitive adhesive layer (B 2 ) on an opposite side with respect to the second substrate (A 2 ) to the release material (C), is more than 0 mm.

3. The pressure sensitive adhesive sheet for tires according to claim 2 , wherein the minimum height h 1 is from 0.03 mm to 2.00 mm.

4. The pressure sensitive adhesive sheet for tires according to claim 2 , wherein the minimum height h 1 is from 0.04 mm to 1.00 mm.

5. The pressure sensitive adhesive sheet for tires according to claim 1 , wherein the first pressure sensitive adhesive layer (B 1 ) is formed of a hot-melt pressure sensitive adhesive composition.

6. The pressure sensitive adhesive sheet for tires according to claim 5 , wherein the hot-melt pressure sensitive adhesive composition comprises 15 to 40% by mass of a block copolymer, 30 to 70% by mass of a tackifier, and 10 to 40% by mass of a plasticizer.

7. The pressure sensitive adhesive sheet for tires according to claim 5 , wherein the hot-melt pressure sensitive adhesive composition comprises 15 to 30% by mass of a block copolymer, 30 to 70% by mass of a tackifier, and 10 to 40% by mass of a plasticizer.

8. The pressure sensitive adhesive sheet for tires according to claim 1 , wherein the MD stiffness of the second substrate (A 2 ), measured in the Gurley method according to JIS L 1085, is from 0.10 mN to 0.40 mN.

9. The pressure sensitive adhesive sheet for tires according to claim 1 , wherein the MD stiffness of the second substrate (A 2 ), measured in the Gurley method according to JIS L 1085, is from 0.10 mN to 0.20 mN.

10. A pressure sensitive adhesive sheet for tires, comprising:
a release material (C);
a first pressure sensitive adhesive layer (B 1 );
a first substrate (A 1 );
a second pressure sensitive adhesive layer (B 2 ); and
a second substrate (A 2 ),
wherein the release material (C), the first and second pressure sensitive adhesive layers (B 1 , B 2 ), and the first and second substrates (A 1 , A 2 ) are in an order of the release material (C), the first pressure sensitive adhesive layer (B 1 ), the first substrate (A 1 ), the second pressure sensitive adhesive layer (B 2 ), and the second substrate (A 2 ),
the second substrate (A 2 ) is free of polyethylene,
in a planar view of the pressure sensitive adhesive sheet, an outline of the first pressure sensitive adhesive layer (B 1 ) exists inside an outline of the second substrate (A 2 ), and
a MD stiffness of the second substrate (A 2 ), measured in the Gurley method according to JIS L 1085, is 0.10 mN or more.

11. The pressure sensitive adhesive sheet for tires according to claim 10 , wherein a minimum height h 1 , that is a shortest distance from an edge of a surface of the second pressure sensitive adhesive layer (B 2 ) on an opposite side with respect to the second substrate (A 2 ) to the release material (C), is more than 0 mm.

12. The pressure sensitive adhesive sheet for tires according to claim 11 , wherein the minimum height h 1 is from 0.03 mm to 2.00 mm.

13. The pressure sensitive adhesive sheet for tires according to claim 11 , wherein the minimum height h 1 is from 0.04 mm to 1.00 mm.

14. The pressure sensitive adhesive sheet for tires according to claim 10 , wherein the first pressure sensitive adhesive layer (B 1 ) is formed of a hot-melt pressure sensitive adhesive composition.

15. The pressure sensitive adhesive sheet for tires according to claim 14 , wherein the hot-melt pressure sensitive adhesive composition comprises 15 to 40% by mass of a block copolymer, 30 to 70% by mass of a tackifier, and 10 to 40% by mass of a plasticizer.

16. The pressure sensitive adhesive sheet for tires according to claim 14 , wherein the hot-melt pressure sensitive adhesive composition comprises 15 to 30% by mass of a block copolymer, 30 to 70% by mass of a tackifier, and 10 to 40% by mass of a plasticizer.

17. The pressure sensitive adhesive sheet for tires according to claim 10 , wherein the MD stiffness of the second substrate (A 2 ), measured in the Gurley method according to JIS L 1085, is from 0.10 mN to 0.40 mN.

18. The pressure sensitive adhesive sheet for tires according to claim 10 , wherein the MD stiffness of the second substrate (A 2 ), measured in the Gurley method according to JIS L 1085, is from 0.10 mN to 0.20 mN.

Assignees

• Lintec Corp

Inventors

• Tanaka Yoshikazu

Classifications

• C09J7/201

  characterised by the release coating composition on the carrier layer · CPC title

• C09J7/21

  Paper; Textile fabrics · CPC title

• B65C9/24

  by heat · CPC title

• C09J2453/00

  Presence of block copolymer · CPC title

• B32B2250/05

  5 or more layers · CPC title