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Browse Prior Art Database

Web Control Process

IP.com Disclosure Number: IPCOM000079084D
Original Publication Date: 1973-May-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Maynard, KB: AUTHOR

Abstract

This is a web control process wherein the high-precision operations - the forming of the long portions of the four edges of the cards in a multiple ply set - are accomplished while the web is intact and under total registration control; and final severance of the web into sets is achieved by performing a noncritical tooling operation (e.g., a round or 60 degrees corner cut), while the web is being fed by a tractor/conveyor unit.

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Web Control Process

This is a web control process wherein the high-precision operations - the forming of the long portions of the four edges of the cards in a multiple ply set - are accomplished while the web is intact and under total registration control; and final severance of the web into sets is achieved by performing a noncritical tooling operation (e.g., a round or 60 degrees corner cut), while the web is being fed by a tractor/conveyor unit.

Assume that a multiply multistream web 1 has its superposed plies glued together at spaced longitudinal points 2 (see top view, Fig. 1) in what will become the stub portions of the sets; that all printing, numbering, file hole punching, and individual web scoring have been completed; and that pins 3 (see side view, Fig.
2) of pin feed tractor 4 have entered previously punched holes 5 in the web. Pins 3 feed the web to pins 6 in another pin feed tractor 7 spaced downstream of tractor 4.

Between tractors 4, 7, while the web is kept under complete control without possibility of registration shift, billowing or skewing of plies, it is fed successively through the respective nips of card end score rolls 8a, 8b, stub score rolls 9a, 9b, and slitter rolls 10a, 10b. Rolls 8a, 8b put longitudinally spaced end scores 11 in each stream of the web. Rolls 9a, 9b put longitudinally spaced stub scores 12 in each stream. As illustrated, rolls 10a, 10b provide 5 continuous longitudinal slits 13 to separate the web into four subweb stre...