Heat-sensitive record material and process for the production thereof
AssigneeKanzaki Paper Manufacturing Co., Ltd.
InventorsShoji Aoyagi, Hideaki Suzuki, Shuichiro Takeda
Life of this patent
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Abstract
A heat-sensitive record material having a thick base support consisting of at least two base sheets and at least one binder layer, said base support weighing at least 150 g/m.sup.2 and having an excellent dimensional stability without accompaniment of any cockles and any background fogginess. It is particularly suitable for use in providing tags, tickets, cards, price marks etc. A process for the production of said heat-sensitive record material by the use of a binder consisting essentially of at least one thermoplastic polymer for which the vicat softening temperature is 20.degree. C. to 180.degree. C. and preferably 30.degree. C. to 160.degree. C.
Claims5
A heat-sensitive record material having a heat-sensitive record layer and a thick base support therefor, said thick base support consisting of a master base sheet, at least one other base sheet and at least one binder layer and weighing at least 150 g/m.sup.2, said binder layer consisting essentially of at least one thermoplastic polymer for which the vicat softening point is 20.degree. C. to 180.degree. C., and one face of said master base sheet bearing said heat-sensitive record layer and the opposite face of said master base sheet being fixed to the surface of said other base sheet through said binder layer.
A process for producing a heat-sensitive record material having a heat-sensitive record layer and a thick base support therefor, said thick base support consisting of at least two base sheets and at least one binder layer and weighing at least 150 g/m.sup.2, which comprises welding the rear surface of a master base sheet having a heat-sensitive record layer on the opposite surface thereof to the surface of second base sheet with a binder consisting essentially of at least one thermoplastic polymer for which the vicat softening point is 20.degree. C. to 180.degree. C. in fused state and curing the binder.
Dependencies are inferred from the claim text.