Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Of varying cross-sectional area or with intermittent...
Patent
1976-04-20
1977-05-24
Kucia, Richard R.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Of varying cross-sectional area or with intermittent...
72342, 164 87, 264165, 264210R, 264285, 264288, B29B 302, B29C 1703
Patent
active
040255999
ABSTRACT:
A continuous process of forming a sheet of thermoplastic material by sequentially pressing against one face of the hot sheet of material the cold tips of projections set in and extending normally from a first series of separately moveable combs and sequentially pressing against the second face of the material the cold tips of projections set in and extending normally from a second series of separately moveable combs so that the projections of the first series of combs interpenetrate with the projections of the second series of combs in such a manner that the projections of the first series are spaced from the projections of the second series by a distance greater than the thickness of the sheet; and the interpenetrated projections are substantially parallel during the act of interpenetration; and wherein the interpenetrated combs are moved along at the speed of the sheet until the sheet is set and the combs are then removed and recycled.
REFERENCES:
patent: 2582294 (1952-01-01), Stober
patent: 3067806 (1962-12-01), Trelease
patent: 3169274 (1965-02-01), Colombo
patent: 3220544 (1965-11-01), Lovell
patent: 3724673 (1973-04-01), Ryon
patent: 3864446 (1975-02-01), Maroschak
patent: 3879508 (1975-04-01), Gilbert
patent: 3902348 (1975-09-01), Hale
ICI Australia Limited
Kucia Richard R.
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