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Folding Acrylic Materials

IP.com Disclosure Number: IPCOM000048097D
Original Publication Date: 1981-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Christy, AE: AUTHOR [+2]

Abstract

There is shown and described a perforation pattern which results in greater reliability in the finished, folded acrylic product. This technique was developed for folding polycarbonates and acrylics into square or rectangular feed tubes for automated assemble operations. In this folding operation, it was required that the inside and outside corners have all curvature eliminated.

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Folding Acrylic Materials

There is shown and described a perforation pattern which results in greater reliability in the finished, folded acrylic product. This technique was developed for folding polycarbonates and acrylics into square or rectangular feed tubes for automated assemble operations. In this folding operation, it was required that the inside and outside corners have all curvature eliminated.

The material to be folded is perforated along a predetermined fold line in a distinct pattern, such as that shown in the figure. In this particular application, the distance between the parallel, horizontal portions of the perforation pattern is equal to the thickness of the material. However, the dimensions of the pattern may be altered to facilitate folding, or to increase or decrease corner rigidity, and to compensate for material thicknesses.

The pattern may be cut into the material using any of several methods, such as a laser, water jet or dies. Folding itself may be performed by hand in most instances, eliminating the need for a specific tool to assure straight edge. Some materials, depending on their elasticity, may require heating along the fold line to create the optimum fold.

When the material is folded, the pattern creates a tab/ hinge corner design, components of which are indicated in the figure. This design produces 90 degree corners with the further advantage of ease of folding. This technique assures dimensional accuracy regardless of fold angle....