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Browse Prior Art Database

Heat Sealing Mechanism

IP.com Disclosure Number: IPCOM000090924D
Original Publication Date: 1969-Aug-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Paulson, TM: AUTHOR [+2]

Abstract

A mechanism using a pantograph-type linkage seals cut cards to a continuous form to provide cut-card, continuous-form sets. Continuous form 1, having detachable marginal strips with pinfeed holes, is advanced at constant speed by feed pins 2. These are provided on transversely spaced endless pinfeed tractor tapes 3, each entrained around a respective idler 4 and drive roll 5. Cards 6 are fed successively from hopper 7 by feed rolls at 8 onto the moving form 1. The cards preferably have detachable marginal strips so as to be impaled on pins 2 and are thus accurately positioned on underlying form 1. Form 1 and cards 6 advance in unison into the nip between tapes 3 and a first set of overlying transversely spaced shoes 9 and then a second set of similar shoes 10.

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Heat Sealing Mechanism

A mechanism using a pantograph-type linkage seals cut cards to a continuous form to provide cut-card, continuous-form sets.

Continuous form 1, having detachable marginal strips with pinfeed holes, is advanced at constant speed by feed pins 2. These are provided on transversely spaced endless pinfeed tractor tapes 3, each entrained around a respective idler 4 and drive roll 5. Cards 6 are fed successively from hopper 7 by feed rolls at 8 onto the moving form 1. The cards preferably have detachable marginal strips so as to be impaled on pins 2 and are thus accurately positioned on underlying form 1. Form 1 and cards 6 advance in unison into the nip between tapes 3 and a first set of overlying transversely spaced shoes 9 and then a second set of similar shoes 10. Before its engagement by pins 2, form 1 is provided with longitudinally extending glue stripes or spots. Shoes 9 and 10 are heated, such as by heat cartridges, to seal the respective cards 6 to underlying form
1. The lengths of shoes 9 and 10 are such as to provide, for the particular glue and web speed used, a sufficient time to effect adequate sealing. Longitudinally aligned shoes 9 and 10 of each set are pivotally connected to a respective tie rod 11. Links 12 and 13 pivotally connect each tie rod 11 to a support such as bar 14. Thus, there is provided a pantograph linkage that permits shoes 9 and 10 to move toward and away from tapes 3 as necessary to expand and contract the nip a...