Thermally expandable sheet and thermally expandable sheet production method

Patent metadata

Field	Value
Publication number	US-11273626-B2
Application number	US-201815898287-A
Country	US
Kind code	B2
Filing date	Feb 16, 2018
Priority date	Mar 23, 2017
Publication date	Mar 15, 2022
Grant date	Mar 15, 2022

Abstract

A thermally expandable sheet in which a thermally expansive layer that contains a thermally expandable material is formed on one side of a base, and where the thermally expansive layer is distended, the base deforms following distension of the thermally expansive layer and the base deforms into an embossed shape.

First claim

What is claimed is:

1. A thermally expandable sheet comprising:
a base, wherein the base, prior to heating, is arranged on a plane;
a thermally expansive layer formed on one side of the base facing a predetermined direction; and
an anchor layer formed between the one side of the base and the thermally expansive layer,
wherein the anchor layer is configured to adhere the base to the thermally expansive layer,
wherein a thickness of the base is equal to or less than a thickness of the thermally expansive layer,
wherein the thermally expansive layer comprises a binder and particles of thermally expandable material configured to expand in response to heating of the thermally expandable material dispersed in the binder,
wherein, upon heating, a portion of the thermally expansive layer is configured to distend in the predetermined direction by expansion of the thermally expandable material, and
wherein the base is configured such that a portion of the base is configured to be deformed in the predetermined direction by the distension of the portion of the thermally expansive layer in the predetermined direction into an embossed shape.

2. The thermally expandable sheet according to claim 1 ,
wherein the anchor layer comprises polyester/acryl/urethane composite resin.

3. The thermally expandable sheet according to claim 2 , further comprising:
a first ink reception layer formed on the thermally expansive layer to be separated from the base by the thermally expansive layer,
wherein the first ink reception layer is configured to receive ink.

4. The thermally expandable sheet according to claim 3 , further comprising:
a second ink reception layer formed on another side of the base opposite to the one side of the base,
wherein the second ink reception layer is configured to receive ink.

5. The thermally expandable sheet according to claim 4 ,
wherein the first ink reception layer and the second ink reception layer comprise the same material.

6. The thermally expandable sheet according to claim 1 ,
wherein the base is a resin base.

7. The thermally expandable sheet according to claim 1 ,
wherein the base comprises at least one resin among polyolefin-based resin, polyester-based resin, polyamide-based resin, polyvinyl chloride-based resin, polyimide-based resin, and silicone-based resin.

8. A thermally expandable sheet comprising:
a base, wherein the base, prior to heating, is arranged on a plane; and
a thermally expansive layer formed on one side of the base facing a predetermined direction; and
a first ink reception layer formed on the thermally expansive layer to be separated from the base by the thermally expansive layer,
wherein the first ink reception layer is configured to receive ink,
wherein a thickness of the base is equal to or less than a thickness of the thermally expansive layer,
wherein the thermally expansive layer comprises a binder and particles of thermally expandable material configured to expand in response to heating of the thermally expandable material dispersed in the binder,
wherein, upon heating, a portion of the thermally expansive layer is configured to distend in the predetermined direction by expansion of the thermally expandable material, and
wherein the base is configured such that a portion of the base is configured to be deformed in the predetermined direction by the distension of the portion of the thermally expansive layer in the predetermined direction into an embossed shape.

9. The thermally expandable sheet according to claim 8 , further comprising:
a second ink reception layer formed on another side of the base opposite to the one side of the base,
wherein the second ink reception layer is configured to receive ink.

10. The thermally expandable sheet according to claim 9 ,
wherein the first ink reception layer and the second ink reception layer comprise the same material.

11. The thermally expandable sheet according to claim 8 ,
wherein the base comprises at least one resin among polyolefin-based resin, polyester-based resin, polyamide-based resin, polyvinyl chloride-based resin, polyimide-based resin, and silicone-based resin.

12. The thermally expandable sheet according to claim 8 ,
wherein the base is a resin base.

13. The thermally expandable sheet according to claim 8 , further comprising:
an anchor layer formed between the one side of the base and the thermally expansive layer,
wherein the anchor layer is configured to adhere the base to the thermally expansive layer.

14. The thermally expandable sheet according to claim 13 ,
wherein the anchor layer comprises polyester/acryl/urethane composite resin.

Assignees

• Casio Computer Co Ltd

Inventors

• Horiuchi Yuji
• Motoyanagi Yoshimune
• Takahashi Hideki
• Mitsui Satoshi

Classifications

• B32B5/18

  characterised by features of a layer {of} foamed material · CPC title

• B41M3/06 Primary

  Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles · CPC title

• B32B27/065 Primary

  of foam · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B32B2307/75

  Printability · CPC title