Browse Prior Art Database

Multiple Ply Set Bonding Method

IP.com Disclosure Number: IPCOM000075285D
Original Publication Date: 1971-Aug-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Maynard, KB: AUTHOR

Abstract

Grain-long snap-out manifold sets are formed from webs bonded by both cold and hot-melt glue to permit high throughput, while assuring that the sets will have long-shelf life and not creep out of registration.

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Multiple Ply Set Bonding Method

Grain-long snap-out manifold sets are formed from webs bonded by both cold and hot-melt glue to permit high throughput, while assuring that the sets will have long-shelf life and not creep out of registration.

Webs 1,2,3 of cardstock, carbon and paper (Fig. 1) are unwound from reels 4,5,6, respectively. Shovel-punch and die cylinders 7a,b apply shovel punches 8 (see Fig. 2) to webs 1,3. Then cylinder 9 applies spots 10 of cold glue to the inner side of web 1; and cylinder 11 applies spots 12 of hot-melt glue to the inner side of web 3 as close as possible to the nip of rolls 13a,b at which webs 1,2,3 merge into a superposed multiple ply web 14. Meanwhile, glue hole punch and die cylinders 15a,b cut glue holes 16 through web 2 and any other inner plies so spots 10,12 will be aligned with holes 16.

The rapid-setting hot-melt glue bonds webs 1,2,3 before ironing rolls 17a,b press them together and before rolls 18a,b cut identical short cuts 19 through each ply. One card length downstream from the nip of rolls 18, cut-off rolls 20a,b sever multiply web 14 into snap-out sets 21 comprising a card 1', carbon sheet 2' and paper sheet 3' (Fig. 2), each detachable from a respective stub portion 22 in conventional manner.

This method provides the rapid setting advantage of hot-melt glue necessary for high-throughput speeds without the attendant disadvantages of the temperature and humidity sensitivity, and creep and misregistration characteri...