Flame-retardant laminate and flame-retardant adhesive sheet

Patent metadata

Field	Value
Publication number	US-9227453-B2
Application number	US-201314412209-A
Country	US
Kind code	B2
Filing date	Aug 16, 2013
Priority date	Sep 6, 2012
Publication date	Jan 5, 2016
Grant date	Jan 5, 2016

Abstract

A flame-retardant laminate 10 having a substrate 11 and a print-image-receiving layer 12 stacked on the substrate 11 , is characterized in that the substrate 11 has a flame resistance equivalent to VTM-0; and the print-image-receiving layer 12 contains a resin and titanium oxide and no halide; exhibits a percent mass retention of 50% or higher as determined at 600° C. through thermal mass analysis; and has a thickness of 10 μm or less.

First claim

The invention claimed is:

1. A flame-retardant laminate comprising a substrate and a print-image-receiving layer stacked on the substrate, wherein:
the substrate has a flame resistance equivalent to VTM-0; and
the print-image-receiving layer contains a resin and titanium oxide and no halide; exhibits a percent mass retention of 50% or higher as determined at 600° C. through thermal mass analysis; and has a thickness of 8 μm or less.

2. The flame-retardant laminate according to claim 1 , wherein the resin is at least one species selected from the group consisting of a polyurethane resin, a polyester resin, an acrylic resin, and a modified product of any of these.

3. A flame-retardant adhesive sheet, comprising a flame-retardant laminate as recited in claim 1 , and an adhesive layer stacked on the substrate on the side opposite the print-image-receiving layer, wherein the adhesive layer contains at least one species selected from the group consisting of a phosphate ester-base flame retardant, a condensed phosphate ester-base flame retardant, and an ammonium phosphate-base flame retardant, and no halogen-containing flame retardant.

4. A flame-retardant adhesive sheet, comprising a flame-retardant laminate as recited in claim 2 , and an adhesive layer stacked on the substrate on the side opposite the print-image-receiving layer, wherein the adhesive layer contains at least one species selected from the group consisting of a phosphate ester-base flame retardant, a condensed phosphate ester-base flame retardant, and an ammonium phosphate-base flame retardant, and no halogen-containing flame retardant.

5. The flame retardant additive according to claim 1 , wherein the print-image-receiving layer has the thickness of 3 to 8 μm.

6. The flame retardant additive according to claim 1 , wherein the substrate is a polyester film coated on both sides with polyimide.

7. The flame retardant additive according to claim 1 , wherein the print-image-receiving layer has a brightness of 50 or higher.

8. The flame retardant additive according to claim 1 , wherein the print-image-receiving layer has a brightness of 60 or higher.

9. The flame retardant additive according to claim 1 , wherein the print-image-receiving layer has a brightness of 65 or higher.

Assignees

• Lintec Corp

Inventors

• Yamaguchi Seitaro
• Harada Kenji
• Amino Yumiko
• Ono Yoshitomo

Classifications

• C09J2467/006

  in the substrate · CPC title

• C09J2203/334

  as a label · CPC title

• C09J7/0296

  Chemistry & Metallurgy · mapped topic

• B41M5/5281

  Polyurethanes or polyureas · CPC title

• B41M5/5254

  characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers · CPC title