Laminate, adhesive kit, laminated structure and production method thereof, and contact adhesive composition

Patent metadata

Field	Value
Publication number	US-12403672-B2
Application number	US-202217691846-A
Country	US
Kind code	B2
Filing date	Mar 10, 2022
Priority date	Dec 7, 2015
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

A laminate comprising a substrate layer; a contact adhesive layer comprising a contact adhesive agent having at least one of chloroprene rubber or acrylic copolymers, as well as microspheres having an average particle size of 0.5 μm or greater in the contact adhesive layer, wherein the contact adhesive layer contains from 5 parts by mass to 500 parts by mass of the microspheres per 100 parts by mass of the contact adhesive agent, and the contact adhesive layer has a plurality of protruding portions because of the the microspheres.

First claim

What is claimed:

1. An adhesive kit comprising:
a laminate configured to be adhered on a second contact adhesive layer covering an installation surface, the laminate comprising:
a substrate layer having a first major surface and a second major surface, and
a contact adhesive layer having a first major surface and a second major surface, the second major surface of the contact adhesive layer adhesively coupled to the first major surface of the substrate layer, the contact adhesive layer comprising a contact adhesive agent and microspheres having an average particle size of 0.5 μm or greater, the contact adhesive agent comprising at least one of chloroprene rubber or acrylic copolymers, the contact adhesive layer comprising from 5 parts by mass to 500 parts by mass of the microspheres per 100 parts by mass of the contact adhesive agent, the first major surface of the contact adhesive layer comprising a plurality of protrusions corresponding to the locations of at least some of the microspheres; and

a primer agent comprising a second contact adhesive agent comprising at least one of chloroprene rubber or acrylic copolymers, and the primer agent comprising second microspheres having an average particle size of 0.5 μm or greater, the second microspheres comprising a crosslinked resin and are nontacky, solid microspheres of acrylic polymer or urethane polymer.

2. The adhesive kit of claim 1 , wherein the contact adhesive layer is nontacky.

3. The adhesive kit of claim 1 , wherein the microspheres are nontacky.

4. The adhesive kit of claim 1 , wherein the microspheres are solid microspheres of acrylic polymer.

5. The adhesive kit of claim 1 , wherein the second microspheres are solid microspheres of acrylic polymer.

6. The adhesive kit of claim 1 , wherein a mass per unit area of the contact adhesive layer is from 5 g/m 2 to 100 g/m 2 .

7. The adhesive kit of claim 1 , wherein a 60 degree gloss value of the first major surface of the contact adhesive layer is from 1 to 40.

8. The adhesive kit of claim 1 , wherein the contact adhesive agent comprises acrylic copolymer having a glass transition temperature from 0° C. to 60° C.

9. The adhesive kit of claim 1 , wherein the primer agent comprises from 5 parts by mass to 500 parts by mass of the second microspheres per 100 parts by mass of the second contact adhesive agent.

10. A laminated structure formed on an installation surface to be adhered wherein the laminated structure is formed using the adhesive kit of claim 1 and wherein the laminated structure comprises:
the laminate, and
a second contact adhesive layer formed by the primer agent covered on the installation surface,
wherein both of the contact adhesive layer of the laminate and the second contact adhesive layer are adhered each other.

11. The laminated structure of claim 10 , wherein the second contact adhesive layer comprises a plurality of protrusions corresponding to locations of at least some of the second microspheres.

12. The laminated structure of claim 10 , wherein the second contact adhesive layer comprises from 5 parts by mass to 500 parts by mass of the second microspheres per 100 parts by mass of the second contact adhesive agent.

13. The laminated structure of claim 10 , wherein the microspheres are solid microspheres of acrylic polymer.

14. The laminated structure of claim 10 , wherein the second microspheres are solid microspheres of acrylic polymer.

Assignees

• 3M Innovative Properties Company

Inventors

• Abe Hidetoshi
• Kashiwazaki Yuji
• Kanno Mamoru

Classifications

• C09J2433/003

  in the primer coating · CPC title

• C09J2411/003

  in the primer coating · CPC title

• C09J157/06

  Homopolymers or copolymers containing elements other than carbon and hydrogen · CPC title

• C09J11/08

  Macromolecular additives · CPC title

• C09J9/00

  Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks (C09J7/00 takes precedence) · CPC title