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Inflated Dunnage Manufacturing Apparatus

IP.com Disclosure Number: IPCOM000077145D
Original Publication Date: 1972-Jun-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Gillis, RP: AUTHOR [+2]

Abstract

Discrete inflated dunnage elements about 1-1/2'' square are generated when and as needed, thus conserving space.

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Inflated Dunnage Manufacturing Apparatus

Discrete inflated dunnage elements about 1-1/2'' square are generated when and as needed, thus conserving space.

Webs 1,2 of heat-sealable plastic are unwound from respective supply rolls 3,4 and advanced between two sets of transversely spaced heated rolls 5 a,b and 6 a,b. Rolls 5,6 seal the webs together along their respective longitudinal edges, while a stream of low-pressure air is directed via conduit 7 into the space between the nips of rolls 5,6. This air separates the webs intermediate their edges, creating an elongated inflated tube 8.

The degree of inflation is controlled by one or more sets of concavely curved guide rolls 9a,b as tube 8 advances downstream, to a point where it is intermittently struck on the fly by a suitably reciprocated member 10. Member 10 has two longitudinally spaced parallel heated sealing elements 11 straddling a knife 12. The elements and knife extend across at least the entire width of tube 8.

When member 10 pinches the tube against anvil 13, a discrete pillow-like inflated element 14, sealed along all four edges, is severed from tube 8 by knife 12 as the trailing edge of the element and the new leading edge of the tube are simultaneously sealed by elements 11. The severed inflated element 14 falls into a suitable chute 15.

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