Adhesive sheet and floor surface covered structure

• US 6,767,630 B2
• Filed: 09/05/2002
• Issued: 07/27/2004
• Est. Priority Date: 04/07/2000
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Okuyama, Takahide
• Primary Examiner(s): ZIRKER, DANIEL R
• Application Number:
  US10/220,835
• Publication Number:
  US 20030044600A1
• Time in Patent Office: 691 Days
• Field of Search: 428/40.1, 428/40.7, 428/41.7, 428/42.1, 428/323, 428/328, 428/329, 428/343, 428/353, 428/354
• US Class Current: 428/354
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: C09J 2301/162 the carrier being a laminate constituted by plastic layers only
• CPC Class Codes: C09J 2400/163 in the substrate
• CPC Class Codes: C09J 2400/283 in the substrate
• CPC Class Codes: C09J 2423/006 in the substrate
• CPC Class Codes: C09J 7/29 Laminated material metallised plastics C09J7/22
• CPC Class Codes: E04F 15/02 Flooring or floor layers composed of a number of similar elements of webs E04F15/16
• CPC Class Codes: E04F 15/10 of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard , or with a top layer of other materials
• CPC Class Codes: Y10T 428/1429 Fluorine
• CPC Class Codes: Y10T 428/1471 Protective layer
• CPC Class Codes: Y10T 428/1486 Ornamental, decorative, pattern, or indicia
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/256 Heavy metal or aluminum or compound thereof
• CPC Class Codes: Y10T 428/257 Iron oxide or aluminum oxide
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2804 Next to metal
• CPC Class Codes: Y10T 428/2813 Heat or solvent activated or sealable
• CPC Class Codes: Y10T 428/2843 including a primer layer
• CPC Class Codes: Y10T 428/2848 Three or more layers

Abstract

An adhesive sheet is provided comprising a base layer, a protective layer disposed on the front surface of the base layer, and an adhesive layer disposed on the back surface of the base layer. The protective layer comprises a surface modifier for modifying the surface of the protective layer, a cured resin and inorganic oxide particles, and the adhesive sheet further comprises a cushion layer comprising an elastomer, disposed between the base layer and the protective layer. This adhesive sheet is suitable for use as a flooring adhesive sheet having high abrasion resistance.

Claims

1. An adhesive sheet comprising a base layer, a protective layer disposed on the front surface of the base layer, and an adhesive layer disposed on the back surface of the base layer, characterized in that,

the protective layer comprises a surface modifier for modifying the surface of the protective layer, a cured resin and inorganic oxide particles, and the adhesive sheet further comprises a cushion layer comprising an elastomer, disposed between the base layer and the protective layer.

2. The adhesive sheet according to claim 1 wherein the cured resin is selected from the group consisting of urethane resin, acrylic resin, polyester resin, silicone resin and epoxy resin.

3. The adhesive sheet according to claim 1 wherein the inorganic oxide particles are inorganic oxide beads.

4. The adhesive sheet according to claim 1 wherein the inorganic oxide particles are selected from the group consisting of alumina, silica, titania or zirconia.

5. The adhesive sheet according to claim 1 wherein the surface modifier is a fluorine containing surface modifier.

6. The adhesive sheet according to claim 1 wherein the adhesive layer is selected from the group consisting of pressure-sensitive adhesives, heat-sensitive adhesives and hot melt adhesives.

7. The adhesive sheet according to claim 1 wherein the protective layer comprises, as an outermost layer, a layer containing the surface modifier, the cured resin and the inorganic oxide particles.

8. The adhesive sheet according to claim 7 wherein the protective layer further comprises a primer layer disposed between the outermost layer and the cushion layer.

9. The adhesive sheet according to claim 1 wherein the base layer is selected from the group consisting of paper, metallic film or resin film.

10. The adhesive sheet according to claim 1 wherein the base layer comprises a printed layer.

11. The adhesive sheet according to claim 1 wherein the elastomer contains an ethylene copolymer, said ethylene copolymer being selected from the group consisting of an ionomer, ethylene-propylene rubber and a mixture thereof.

12. A floor surface covered structure comprising a floor of a building, and the adhesive sheet of claim 1 adhered on the surface of the floor.