Thermosensitive recording label

Patent metadata

Field	Value
Publication number	US-9283793-B2
Application number	US-201214234249-A
Country	US
Kind code	B2
Filing date	Oct 30, 2012
Priority date	Nov 7, 2011
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

To provide a thermosensitive recording label, which contains a base, an under layer, a thermosensitive coloring layer, a barrier layer, a release layer, and an adhesive layer, where the under layer, the thermosensitive coloring layer, the barrier layer, and the release layer are disposed on one surface of the base in this order, and the adhesive layer is disposed on the other surface of the base, wherein the release layer contains a cured product of a heat curing silicone resin, and the barrier layer contains a cured product of a water-soluble resin with a crosslinking agent, and inorganic filler.

First claim

The invention claimed is:

1. A thermosensitive recording label, comprising:
a base;
an under layer;
a thermosensitive coloring layer;
a barrier layer;
a release layer; and
an adhesive layer, where the under layer, the thermosensitive coloring layer, the barrier layer, and the release layer are disposed on one surface of the base in this order, and the adhesive layer is disposed on the other surface of the base,
wherein the release layer contains a cured product of a heat curing silicone resin, and the barrier layer contains a cured product of a water-soluble resin with a crosslinking agent, and inorganic filler, and
wherein the heat curing silicone resin contains organopolysiloxane containing a hexenyl group, and organohydrogen polysiloxane.

2. The thermosensitive recording label according to claim 1 , wherein the inorganic filler is aluminum hydroxide.

3. The thermosensitive recording label according to claim 1 , wherein the barrier layer further contains resin particles.

4. The thermosensitive recording label according to claim 3 , wherein the resin particles are silicone resin particles, crosslinked polymethyl methacrylate particles, or both thereof.

5. The thermosensitive recording label according to claim 4 , wherein the crosslinked polymethyl methacrylate particles have a volume average particle diameter of 1.0 μm to 8.0 μm.

6. The thermosensitive recording label according claim 4 , wherein the crosslinked polymethyl methacrylate particles are porous.

7. The thermosensitive recording label according to claim 1 , wherein the under layer further contains hollow thermoplastic resin particles.

8. The thermosensitive recording label according to claim 1 , wherein a bonding strength between the release layer and the bather layer is stronger than a bonding strength between the adhesive layer and the release layer.

9. The thermosensitive recording label according to claim 1 , wherein the thermosensitive recording label in the form of a roll.

10. The thermosensitive recording label according to claim 1 , wherein an amount of the cured product of the water-soluble resin with the crosslinking agent in the barrier layer is from 5% by mass to 20% by mass.

11. A thermosensitive recording label, comprising:
a base;
an under layer;
a thermosensitive coloring layer;
a barrier layer;
a release layer; and
an adhesive layer, where the under layer, the thermosensitive coloring layer, the barrier layer, and the release layer are disposed on one surface of the base in this order, and the adhesive layer is disposed on the other surface of the base,
wherein the release layer contains a cured product of a heat curing silicone resin, and the barrier layer contains a cured product of a water-soluble resin with a crosslinking agent, and inorganic filler,
wherein the water-soluble resin is itaconic acid-modified polyvinyl alcohol.

Assignees

• Ikeda Toshiaki
• Kuga Yutaka
• Kugoh Tomoyuki
• Ricoh Co Ltd

Inventors

• Ikeda Toshiaki
• Kuga Yutaka
• Kugoh Tomoyuki

Classifications

• B41M5/42

  Intermediate, {backcoat}, or covering layers {(B41M5/405 takes precedence; multilayer thermal transfer systems in general B41M5/38214)} · CPC title

• B41M5/44

  characterised by the macromolecular compounds · CPC title

• B41M2205/40

  Cover layers; Layers separated from substrate by imaging layer; Protective layers; Layers applied before imaging · CPC title

• B41M2205/04

  Direct thermal recording [DTR] · CPC title

• B41M5/426

  characterised by inorganic compounds, e.g. metals, metal salts, metal complexes · CPC title