Manufacturing fiberboard ducts

Details Manufacturing fiberboard ducts Manufacturing fiberboard ducts

1982-09-29

1984-07-24

Kimlin, Edward C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 64, 156468, 156498, 226196, 229 16R, 493 52, 493 78, 493179, B31F 2310

Patent

active

044616643

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

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patent: 3420142 (1969-01-01), Gale et al.
patent: 3534646 (1970-10-01), Tyer
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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