Method for applying stiffener to computer paper
OwnerFrederick A. DaMertinventor
Life of this patent
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Abstract
Stiffeners in the form of spaced, narrow bands or lines of flowable, quick-setting material are applied to one side of a moving paper web to be used as computer paper. The stiffeners are applied either immediately before or during the time the paper web is partially wrapped around a cylindrical drum so that the material will set to a solidified condition while it is on the drum to set up a molecular pattern in each stiffener line, causing the paper web to be inherently biased in one direction. Guide means is provided for directing the paper web onto and off the drum. The material may be applied by applicator guns or wheels as the paper web moves through a rotary printing press and as it moves toward a line hole punch apparatus, perforating means and a fan-folding mechanism.
Claims6
A method of applying a band of flowable stiffening material to one face of a flexible web of computer paper and moving said web about a major portion of a cylindrical surface, said stiffening material being applied to said moving web at a location near the point at which the web commences to move about said cylindrical surface with the stiffening material being capable of setting to a solidified condition, said materials being cured when the web is on said cylindrical surface to cause the material to set to said solidified condition to develop a built-in bias in the web whereby a relatively lightweight web of computer paper can be stiffened sufficiently to perform as effectively in a computer printout system as a relatively heavier weight paper.
Dependencies are inferred from the claim text.