Vacuum tube holder for corrugating machines

Details Vacuum tube holder for corrugating machines Vacuum tube holder for corrugating machines

1988-01-28

1988-11-29

Hoag, Willard

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With bending, folding, winding, or wrapping means

156462, 156473, 425369, 493463, B29C 5322, B31F 120

Patent

active

047879548

ABSTRACT:
Apparatus for forming and fabricating single-faced paperboard, the lower corrugating roll is provided with numerous circumferential grooves which are partially evacuated beneath a traveling overlayment of paper web for the purpose of holding the web tightly against the corrugated roll profile. These grooves are evacuated by groove evacuation tubes connected with one or more vacuum manifolds. Such evacuation tubes have flared, tubular distal ends to match the slotted socket of respective tube holders. Each holder also includes a spring loaded mandrel to secure each tube in its respective socket in such a manner as to permit rapid removal and replacement of such tubes.

REFERENCES:
patent: Re31138 (1983-02-01), Tokuno
patent: 1981338 (1934-11-01), Swift
patent: 2068155 (1937-01-01), Swift
patent: 4251313 (1981-02-01), Abe
patent: 4368094 (1983-01-01), Mayer et al.
patent: 4368094 (1983-01-01), Mayer et al.
patent: 4381212 (1983-04-01), Roberts

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