Linerless direct thermal label

Details Linerless direct thermal label Linerless direct thermal label

1994-09-26

1996-04-16

Hess, B. Hamilton

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

427152, 503226, B41M 540

Patent

active

055082475

ABSTRACT:
A linerless thermal label is produced by disposing a thermosensitive layer into a substrate and allowing the thermosensitive layer to dry, said thermosensitive layer comprising a color former causing the thermosensitive layer to remain color stable. A protective layer is applied on top of the thermosensitive layer and exposes the protective layer to a temperature and a time sufficient to dry the protective layer but not cause the thermosensitive layer to a change color. A heat curable silicone mixture is disposed on said protective layer and thereafter cured to form a release layer without causing color change in the thermosensitive layer. A pressure-sensitive adhesive is applied on an opposite side of the substrate which is exposed to a temperature for a time sufficient to dry the pressure-sensitive adhesive without causing color change in the thermosensitive layer, and the substrate is then rolled in a manner causing the pressure-sensitive adhesive to contact the release layer.

REFERENCES:
patent: 4288496 (1981-09-01), Reusser et al.
patent: 4525566 (1985-06-01), Homan et al.
patent: 4720479 (1988-01-01), Craig et al.
patent: 4851383 (1989-07-01), Fickenscher et al.
patent: 5021110 (1991-06-01), Kobayashi
patent: 5021273 (1991-06-01), Kobayashi
patent: 5275855 (1994-01-01), Kobayashi et al.
patent: 5292713 (1994-03-01), Stenzel et al.

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