Manufacturing fiberboard ducts

Details Manufacturing fiberboard ducts Manufacturing fiberboard ducts

1984-07-06

1985-07-09

Woo, Jay H.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156468, 156498, 226196, 229 16R, 493 52, 493 78, 493179, B31F 100, B31F 700

Patent

active

045280533

ABSTRACT:
The apparatus forms fiberboard hollow ducts from fiberboard and comprises means for collapsing or partially collapsing the fiberboard into a flat collapsed fiberboard or partially collapsed fiberboard for advancing the collapsed or partially collapsed fiberboard through a preheating and heating stage while heat sensitive tape is applied to the linear seam of the advancing fiberboard. After tape is applied, means for applying pressure and cooling operate to permanently set the tape.

REFERENCES:
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patent: 3420142 (1969-01-01), Gale et al.
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patent: 3605534 (1971-09-01), Barr
patent: 3829338 (1974-08-01), Hayasi et al.
patent: 3850775 (1974-11-01), Bruneau et al.
patent: 3908526 (1975-09-01), Vas Salos
patent: 4045263 (1977-08-01), Moore et al.
patent: 4070954 (1978-01-01), Cailey
patent: 4337113 (1982-06-01), Searle

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