Vacuum assisted web drive for corrugator double backer

Details Vacuum assisted web drive for corrugator double backer Vacuum assisted web drive for corrugator double backer

1997-07-17

1999-01-12

Mansen, Michael

Advancing material of indeterminate length

With adherence or attraction of material to advancing means

By pneumatic pressure

226170, B65H 2000

Patent

active

058576053

ABSTRACT:
A double backer for curing the web bonding adhesive and drying the corrugated paperboard web utilizes a web holddown apparatus for maintaining the web in intimate drying contact with the lower heating units which does not require the use of a driven holddown belt. The web is pulled through the double backer by a downstream vacuum conveyor section comprising a single full width belt to the upper surfaces of which a vacuum is applied. The vacuum drive belt has low friction strips on the underside by which the belt is supported on vacuum plenum support surfaces and a unique pattern of vacuum distribution channels on the other side of the belt which together reduce friction and drive power requirements.

REFERENCES:
patent: 3140030 (1964-07-01), Stewart
patent: 3266690 (1966-08-01), Goettsch
patent: 3321121 (1967-05-01), Nyberg et al.
patent: 3425610 (1969-02-01), Stewart
patent: 5442420 (1995-08-01), Tsuji
patent: 5561918 (1996-10-01), Marschke
patent: 5706994 (1998-01-01), Welch et al.

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