Thermal stencil master sheet with epoxy/coreactant adhesive and

Details Thermal stencil master sheet with epoxy/coreactant adhesive and Thermal stencil master sheet with epoxy/coreactant adhesive and

1998-02-25

1999-11-30

Funk, Stephen R.

Printing

Stenciling

Stencils

1011281, B41N 124

Patent

active

059923156

ABSTRACT:
A thermal stencil master sheet for stencil printing has a porous substrate for absorbing ink and a thermoplastic resin film bound thereto by an epoxy/coreactant adhesive layer. The stencil pattern is formed in both the film and epoxy/coreactant adhesive layer. The epoxy/coreactant adhesive layer comprises a thermoplastic resin with crosslinks and is derived from a combination of epoxy monomers, epoxy oligomers or mixtures thereof and a coreactant. Thermal stencil master sheets are prepared by forming a laminate of a porous substrate, a curable liquid epoxy/coreactant adhesive formulation and a thermoplastic resin film, and applying heat and pressure to the laminate to cure the liquid adhesive layer and form a solid layer.

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