Solvent resistant thermally printable material

Details Solvent resistant thermally printable material Solvent resistant thermally printable material

B - Operations, Transporting

41

M

42/3

B41M 5/44 (2006.01) G09F 3/02 (2006.01)

Patent

CA 1236298

SOLVENT RESISTANT THERMALLY PRINTABLE MATERIAL Abstract of the Disclosure Disclosed is a heat-sensitive recording material use- i ful, for example, in the manufacture of labels used in connection with the sale of meat, produce, and the like. The material comprises a cellulosic or other suitable substrate, a thermally imprintable color producing layer and a water-insoluble protec- tive layer over the color-producing layer. It may also include a second protective layer and/or a pressure-sensitive adhesive layer on the opposite side of the substrate from the color- producing layer, and a releasable liner covering the adhesive layer. The color-producing layer has a colorless or pale leuco dye, an acidic developer for producing color upon imagewise heating of the recording material, a water-soluble, polymeric binder material, and a basic, acid-neutralizing agent for reducing background discoloration. The protective layer compri- ses a polymeric resin, a covalent cross-linker for the resin, an acidic substance operative as a catalyst which cross-links the resin in situ, and inert filler particles operative as spacer particles. Oxygen-permeable, heat-sensitive recording material labels made in accordance with the invention avoid the reduction of "meat bloom" when applied to a package containing red meat. -1-

470185

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