Plastic and nonmetallic article shaping or treating: processes – Treatment of material by vibrating – jarring – or agitating... – Continuously formed or indefinite length article
Patent
1984-01-18
1986-06-10
Silbaugh, Jan
Plastic and nonmetallic article shaping or treating: processes
Treatment of material by vibrating, jarring, or agitating...
Continuously formed or indefinite length article
264 87, 264136, 264145, 264160, 264257, 264333, 264510, B28B 2300
Patent
active
045942102
ABSTRACT:
A process is provided for continuously manufacturing plates containing an open net fibrillated polymeric film reinforcement. A net having a plurality of fibrillated polymeric film layers is unwound from a continuous reel, and the net is cut into pieces having a length approximately equal to a circumference of a forming roll for forming a plate to be manufactured. The net pieces are impregnated with a cement mix and then deposited onto a conveyor belt on which a cement mix layer has been previously deposited. After contacting the net with the cement layer, the net is subjected to vibration. A vacuum is applied to the net contacting the cement layer to remove excess water and to increase the compactness between the net and the cement layer. The net-cement panel resulting from the above is wound onto the forming roll, which has a circumference approximately equal to the length of the net piece, with simultaneous application of pressure, so that the ends of the net piece are disposed adjacent to a notch located at a periphery of the forming roll. The net-cement panel is cut at the notch adjacent to which the ends of the net pieces are arranged to form a plate, and finally the plate is compressed.
REFERENCES:
patent: 4267136 (1981-05-01), Bijen
Chiappini Giuseppe
Di Paola Massimo
Vittone Andrea
Lorin Hubert C.
Moplefan S.p.A.
Silbaugh Jan
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