| 摘要 |
A heat-transfer label including a non-wax, non-silicone release layer for use in decorating an article, such as a glass container, without leaving a visually discernible release residue on the decorated article. In a preferred embodiment, the label includes a transfer portion, the transfer portion comprising a protective lacquer layer, an ink design layer over the protective lacquer layer, and a heat-activatable adhesive layer over the ink design and protective lacquer layers, the adhesive layer extending beyond the peripheries of the ink design and protective lacquer layers. The protective lacquer layer preferably includes a cross-linked phenoxy resin, the ink design layer preferably includes a polyester resin, and the adhesive layer preferably includes a polyester resin and an anti-blocking agent, such as a paraffinic wax. The label also includes a support portion, the transfer portion being positioned over the support portion for transfer of the transfer portion from the support portion to an article upon the application of heat to the support portion while the transfer portion is placed in contact with the article. The support portion includes a carrier, the carrier preferably being a polyester film. The support portion also includes a non-wax, non-silicone release layer positioned over the carrier and in direct contact with the protective lacquer layer and the periphery of the adhesive layer, the release layer preferably being made by (a) coating onto the carrier a composition preferably comprising about 5 to 30 wt % of an alkyl vinyl ether monomer having a carbon chain length of at least 18, about 40 to 80 wt % of a difunctional acrylate monomer, about 5 to 50 wt % of trifunctional acrylate monomer, and about 2 to 8 wt % of a free-radical UV photoinitiator and (b) activating the free-radical UV photoinitator. The release composition may also include up to about 1 wt % of a wetting agent, such as a fluoroalkyl surfactant, a silicone polyether wetting agent, and a silicone defoamer.
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