Web holddown with thread-up mechanism

Details Web holddown with thread-up mechanism Web holddown with thread-up mechanism

1997-08-21

1998-11-10

Bennett, Henry A.

Drying and gas or vapor contact with solids

Apparatus

Sheet, web, or strand

34631, 34637, 100211, 156470, 156580, 1565833, F26B 900

Patent

active

058326286

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 holddown is provided instead by a series of parallel, flexible, closely spaced strips suspended above the web in the heating section and extending in the direction of web travel. The length of the holddown strips in contact with the web may be selectively varied. The holddown strips may comprise continuous cables in which one run of the cables rests upon the moving web to provide the web holddown and a second run includes high friction cable portions which are movable into driving contact with the upper surface of the web to pull it through the heating section, as for initial web thread

REFERENCES:
patent: 3103755 (1963-09-01), Hajos
patent: 3319353 (1967-05-01), Matsunami et al.
patent: 5256240 (1993-10-01), Shortt
patent: 5456783 (1995-10-01), Sissons
patent: 5561918 (1996-10-01), Marschke
patent: 5746010 (1998-05-01), Marschke et al.

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