The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 1999
Filed:
Feb. 25, 1998
Michael A Lorenz, Miamisburg, OH (US);
NCR Corporation, Dayton, OH (US);
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.