Lamination sheet and insert molding body

Patent metadata

Field	Value
Publication number	US-11241862-B2
Application number	US-201916585381-A
Country	US
Kind code	B2
Filing date	Sep 27, 2019
Priority date	Sep 28, 2018
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A lamination sheet includes a first layer, a second layer, and a third layer. The first layer is a layer made of resin and having optical transparency. The second layer is a layer made of resin and provided on the back side of the first layer. The third layer is a layer made of resin and provided on the back side of the second layer. The first layer is a layer, the thickness of which 188 μm or larger. The second layer is a patterned layer. The third layer is a layer, the thermal resistance value of which is higher than the thermal resistance value of the second layer.

First claim

The invention claimed is:

1. A lamination sheet comprising:
a first layer made of resin and having optical transparency;
a second layer made of resin and provided on a back side of the first layer; and
a third layer made of resin and provided on a back side of the second layer, wherein the first layer has a thickness of 188 μm or larger, the second layer is a patterned layer, and the third layer has a thermal resistance value which is higher than a thermal resistance value of the second layer.

2. The lamination sheet according to claim 1 , wherein the first layer is a single layer.

3. The lamination sheet according to claim 1 , wherein the first layer has a thickness larger than a total thickness of the second layer and the third layer.

4. The lamination sheet according to claim 2 , wherein the first layer has a thickness larger than a total thickness of the second layer and the third layer.

5. The lamination sheet according to claim 1 , wherein a sum of the thermal resistance values of the second layer and the third layer, which is a total thermal resistance value, is 500×10 −6 m 2 K/W or larger.

6. The lamination sheet according to claim 2 , wherein a sum of the thermal resistance values of the second layer and the third layer is 500×10 −6 m 2 K/W or larger, the sum being a total resistance value.

7. The lamination sheet according to claim 3 , wherein a sum of the thermal resistance values of the second layer and the third layer is 500×10 −6 m 2 ·K/W or larger, the sum being a total resistance value.

8. The lamination sheet according to claim 4 , wherein a sum of the thermal resistance values of the second layer and the third layer is 500×10 −6 m 2 ·K/W or larger, the sum being a total resistance value.

9. The lamination sheet according to claim 1 , wherein the second layer has optical transparency, and the third layer is a colored layer.

10. The lamination sheet according to claim 2 , wherein the second layer has optical transparency, and the third layer is a colored layer.

11. The lamination sheet according to claim 3 , wherein the second layer has optical transparency, and the third layer is a colored layer.

12. The lamination sheet according to claim 4 , wherein the second layer has optical transparency, and the third layer is a colored layer.

13. The lamination sheet according to claim 5 , wherein the second layer has optical transparency, and the third layer is a colored layer.

14. The lamination sheet according to claim 6 , wherein the second layer has optical transparency, and the third layer is a colored layer.

15. The lamination sheet according to claim 7 , wherein the second layer has optical transparency, and the third layer is a colored layer.

16. An insert molding body comprising:
the lamination sheet according to claim 1 ; and
a main molding body made of resin,
wherein the lamination sheet covers a front surface of the main molding body while a back surface on the back side of the third layer contacts the front surface of the main molding body.

17. An insert molding body comprising:
the lamination sheet according to claim 3 ; and
a main molding body made of resin,
wherein the lamination sheet covers a front surface of the main molding body while a back surface on the back side of the third layer contacts the front surface of the main molding body.

18. An insert molding body comprising:
the lamination sheet according to claim 3 ; and
a main molding body made of resin,
wherein the lamination sheet covers a front surface of the main molding body while a back surface on the back side of the third layer contacts the front surface of the main molding body.

19. An insert molding body comprising:
the lamination sheet according to claim 5 ; and
a main molding body made of resin,
wherein the lamination sheet covers a front surface of the main molding body while a back surface on the back side of the third layer contacts the front surface of the main molding body.

20. An insert molding body comprising:
the lamination sheet according to claim 9 ; and
a main molding body made of resin,
wherein the lamination sheet covers a front surface of the main molding body while a back surface on the back side of the third layer contacts the front surface of the main molding body.

Assignees

• Seiren Co Ltd

Inventors

• Kubota Harukazu

Classifications

• B32B2307/306

  Resistant to heat · CPC title

• B32B2307/4026

  within the layer by addition of a colorant, e.g. pigments, dyes · CPC title

• B32B2451/00

  Decorative or ornamental articles · CPC title

• B32B2307/302

  Conductive · CPC title

• B32B27/40

  comprising polyurethanes · CPC title