Bic Corporation

Creg G Bradley

Peter D Gabriele

Teresa B Hopper

Michael T Nowak

Shyamy R Sastry

Renate Nienaber

A multilayer pressure sensitive correction tape useful for masking handwritten and/or printed characters comprising a release liner, a masking layer and a pressure sensitive adhesive layer, wherein at least one of the layers is cured by radiation. In a preferred embodiment of the invention, the masking layer and pressure sensitive adhesive layer comprise formulations of reactive monomers or oligomers which are radiation-cured after the formulations are applied to the correction tape assembly. In a more preferred embodiment of the invention the masking layer and pressure sensitive adhesive layer formulations contain no volatile solvents when these formulations are applied to the correction tape assembly. The radiation-cured layers are essentially insoluble in organic solvents and water, and the radiation-cured layers exhibit improved film toughness and improved resistance to ink 'bleed through'. Additionally, the present invention is directed to a process for making such a multilayer correction tape having at least one radiation cured layer.

Radiation-cured correction tape

The present invention is directed to a correction tape that has a support member, a transfer layer, and a correction medium layer. The correction medium layer includes an opacifying pigment, binding polymer, and bleed inhibitor. Suitable bleed inhibitors include polyvinyl amine, phospholipids, tallow amines or combinations thereof. The bleed inhibitor is present in an amount of between about 0.1% to 10% by weight.

Correction tape having dye migration blocking properties

The present invention is directed to correction tapes having dye migration blocking properties. More specifically, the present invention includes a correction tape having a dye migration barrier. The dye migration barrier comprises an organic material that serves as a physical barrier to prevent dye from migrating from the lower corrected layer to the visible surface. Additionally, the present invention is directed to a process for the manufacture of a correction tape having a dye migration barrier.

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Simpsonville, SC, United States of America

Creg G Bradley