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Fold Coating Continuous Forms Stacking

IP.com Disclosure Number: IPCOM000075951D
Original Publication Date: 1971-Dec-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Malmros, GV: AUTHOR

Abstract

The fold memory of stacked continuous forms is enhanced by selective edge coatings. The surfaces 11 and 12 of stack 10 formed by the fold edges are treated by placing stripes such as 15 on those surfaces. When the forms are fed through a handling device, selected areas such as 16 will have slightly increased stiffness so that returning of the continuous form to a stack, such as after passing through a printer, can be effected without reverse folds occurring at the fold lines. The fold coating can be continuous across 11 and 12 or segmented into stripes, as shown, by masking or selected coating application. Bridging between edge coatings is minimized by spraying the sides of 10 at 45 degree angles, as suggested by arrows 18 and 19.

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Fold Coating Continuous Forms Stacking

The fold memory of stacked continuous forms is enhanced by selective edge coatings. The surfaces 11 and 12 of stack 10 formed by the fold edges are treated by placing stripes such as 15 on those surfaces. When the forms are fed through a handling device, selected areas such as 16 will have slightly increased stiffness so that returning of the continuous form to a stack, such as after passing through a printer, can be effected without reverse folds occurring at the fold lines. The fold coating can be continuous across 11 and 12 or segmented into stripes, as shown, by masking or selected coating application. Bridging between edge coatings is minimized by spraying the sides of 10 at 45 degree angles, as suggested by arrows 18 and 19. Thus, each folded edge acts as a shield to minimize migration of the coating into the surfaces between the folds. Materials other than lacquers can be used. For instance, flexible coatings such as rubber or other elastomers may be used to provide a spring-like hinge to enhance the refolding action.

A rubber coating should be of a nature such that when it dries, adjacent surfaces do not adhere to each other. Elastomers and lacquers such as epoxies, vinyls, etc. may be used but should be of a transparent nature.

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