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Handling Frame for Flat Thin Foils

IP.com Disclosure Number: IPCOM000045263D
Original Publication Date: 1983-Feb-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Kratschmann, E: AUTHOR

Abstract

For handling foils, particularly metal foils, which are used as the base material of screening masks and the like during the various masking, etching, developing and other processes, a handling frame is employed for holding the foil in a flat, tensioned position.

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Handling Frame for Flat Thin Foils

For handling foils, particularly metal foils, which are used as the base material of screening masks and the like during the various masking, etching, developing and other processes, a handling frame is employed for holding the foil in a flat, tensioned position.

The Illustrated frame consists of a rectangular holder 1, whose longitudinal members 3 have a number of hooks 2 projected towards the inside. Hooks 2 are bent upwards in such a manner that their ends form a flat plane for hooking the foil 4.

Transverse members 5 of holder 1 are curved upwards, and the entire holder 1 is made of flexible material, such as stainless steel, so that application of a force to the top of transverse members 5, as shown in Fig. 2, causes hooks 2 to be swung inwards. While holder 1 is temporarily kept in this position, foil 4, having suitable holes along its longitudinal edge, is placed on the frame.

Release of the force from transverse members 5 causes foil 4 to be tensioned by the then effective spring force of holder 1, so that foil 4 is held absolutely flat under tension and protected from damage.

Fig. 3 shows a number of holders, each of which carries a foil and each of which is arranged in a basket 6 for wet lines, buffering, transport, etc.

Transverse members 5 can also have a stretched form instead of being curved upwards. In this case, application of the force to the top of transverse members 5 bends them downwards, and hooks 2 are swun...