FILM FOR LAMINATED GLASS, AND LAMINATED GLASS

• US 20170129220A1
• Filed: 05/27/2015
• Published: 05/11/2017
• Est. Priority Date: 05/30/2014
• Status: Abandoned Application

• Current Assignee: Konica Minolta Inc.
• Original Assignee: Konica Minolta Inc.
• Inventors: TAKA, Yukako
• Application Number:
  US15/314,748
• Publication Number:
  US 20170129220A1
• Time in Patent Office: Days
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10201 Dielectric coatings
• CPC Class Codes: B32B 17/10779 containing polyester
• CPC Class Codes: B32B 17/10871 in combination with particular heat treatment
• CPC Class Codes: B32B 2250/03 3 layers
• CPC Class Codes: B32B 2250/40 Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/20 Inorganic coating
• CPC Class Codes: B32B 2255/26 Polymeric coating
• CPC Class Codes: B32B 2255/28 Multiple coating on one surface
• CPC Class Codes: B32B 2262/062 Cellulose fibres, e.g. cotton
• CPC Class Codes: B32B 2264/02 Synthetic macromolecular particles
• CPC Class Codes: B32B 2264/10 Inorganic particles
• CPC Class Codes: B32B 2264/102 Oxide or hydroxide
• CPC Class Codes: B32B 2264/104 Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
• CPC Class Codes: B32B 23/04 comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a glass layer B32B17/08
• CPC Class Codes: B32B 23/08 of synthetic resin
• CPC Class Codes: B32B 23/20 comprising esters
• CPC Class Codes: B32B 2307/30 having particular thermal properties
• CPC Class Codes: B32B 2307/412 : Transparent
• CPC Class Codes: B32B 2307/416 : Reflective
• CPC Class Codes: B32B 2307/418 : Refractive
• CPC Class Codes: B32B 2307/518 : bi-axially
• CPC Class Codes: B32B 2307/732 : Dimensional properties
• CPC Class Codes: B32B 2307/736 : Shrinkable
• CPC Class Codes: B32B 2367/00 : Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 2605/006 : Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
• CPC Class Codes: B32B 2605/08 : Cars
• CPC Class Codes: B32B 27/08 : of synthetic resin
• CPC Class Codes: B32B 27/18 : characterised by the use of special additives
• CPC Class Codes: B32B 27/281 : comprising polyimides
• CPC Class Codes: B32B 27/304 : comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/325 : comprising polycycloolefins
• CPC Class Codes: B32B 27/36 : comprising polyesters
• CPC Class Codes: B32B 27/42 : comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
• CPC Class Codes: B32B 3/28 : characterised by a layer comprising a deformed thin sheet , i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled B32B29/08 takes precedence
• CPC Class Codes: B32B 5/02 : characterised by structural features of a fibrous or filamentary layer layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties

Abstract

Provided is a film for laminated glass, the film exhibiting satisfactory in-plane uniformity when processed into a laminated glass, and excellent processing suitability for a glass having a curved surface. Provided is also a laminated glass provided with the film for laminated glass.

The film for laminated glass of the present invention is a film for laminated glass, which has a resin film; and an optically functional layer containing a polymer on at least one surface of the resin film, and in which the heat shrinkage rate (S₁) of the film for laminated glass and the heat shrinkage rate (S₂) of the resin film obtainable after the films are left to stand for 30 minutes in an environment at 130° C. are respectively adjusted so as to satisfy the following expression (I) in a direction in the plane as well as a direction orthogonal thereto:

0.60≦S₁/S₂≦0.98  Expression (I):

Claims

1. A film for laminated glass, the film comprising a resin film;

and an optically functional layer containing a polymer on at least one surface of the resin film, wherein the heat shrinkage rate (S₁) of the film for laminated glass and the heat shrinkage rate (S₂) of the resin film obtainable after the films are left to stand for 30 minutes in an environment at 130°

C. are respectively adjusted so as to satisfy the following expression (I) in a direction in the plane as well as a direction orthogonal thereto;

0.60≦

S₁/S₂≦

0.98 

 

Expression (I);

2. The film for laminated glass according to claim 1, wherein a laminated glass provided with the film for laminated glass is a laminated glass having a curved surface.

3. The film for laminated glass according to claim 1, wherein the thickness of the optically functional layer and the thickness of the resin film satisfy the following expression (II):

0.035≦

thickness of optically functional layer/thickness of resin film≦

7.0 

 

Expression (II);

4. The film for laminated glass according to claim 1, wherein the heat shrinkage rate (S₂) of the resin film obtainable after the resin film is left to stand for 30 minutes in an environment at 130°

C. is more than 3.0% in a direction in the plane as well as a direction orthogonal thereto.

5. The film for laminated glass according to claim 1, wherein the optically functional layer has a layer formed by alternately laminating a high refractive index layer containing at least fine metal oxide particles and a water-soluble polymer, and a low refractive index layer containing at least a water-soluble polymer.

6. The film for laminated glass according to claim 1, wherein the optically functional layer is an infrared reflective layer.

7. A laminated glass comprising the film for laminated glass according to claim 1.

8. The film for laminated glass according to claim 2, wherein the thickness of the optically functional layer and the thickness of the resin film satisfy the following expression (II):

0.035≦

thickness of optically functional layer/thickness of resin film≦

7.0. 

 

Expression (II);

9. The film for laminated glass according to claim 2, wherein the heat shrinkage rate (S₂) of the resin film obtainable after the resin film is left to stand for 30 minutes in an environment at 130°

C. is more than 3.0% in a direction in the plane as well as a direction orthogonal thereto.

10. The film for laminated glass according to claim 2, wherein the optically functional layer has a layer formed by alternately laminating a high refractive index layer containing at least fine metal oxide particles and a water-soluble polymer, and a low refractive index layer containing at least a water-soluble polymer.

11. The film for laminated glass according to claim 2, wherein the optically functional layer is an infrared reflective layer.

12. A laminated glass comprising the film for laminated glass according to claim 2.

13. The film for laminated glass according to claim 3, wherein the heat shrinkage rate (S₂) of the resin film obtainable after the resin film is left to stand for 30 minutes in an environment at 130°

C. is more than 3.0% in a direction in the plane as well as a direction orthogonal thereto.

14. The film for laminated glass according to claim 3, wherein the optically functional layer has a layer formed by alternately laminating a high refractive index layer containing at least fine metal oxide particles and a water-soluble polymer, and a low refractive index layer containing at least a water-soluble polymer.

15. The film for laminated glass according to claim 3, wherein the optically functional layer is an infrared reflective layer.

16. A laminated glass comprising the film for laminated glass according to claim 3.

17. The film for laminated glass according to claim 4, wherein the optically functional layer has a layer formed by alternately laminating a high refractive index layer containing at least fine metal oxide particles and a water-soluble polymer, and a low refractive index layer containing at least a water-soluble polymer.

18. The film for laminated glass according to claim 4, wherein the optically functional layer is an infrared reflective layer.

19. A laminated glass comprising the film for laminated glass according to claim 4.

20. The film for laminated glass according to claim 5, wherein the optically functional layer is an infrared reflective layer.