Paper making and fiber liberation – Processes and products – Multi-layer waterlaid webs or sheets
Patent
1974-07-31
1976-12-14
Bashore, S. Leon
Paper making and fiber liberation
Processes and products
Multi-layer waterlaid webs or sheets
162199, 162203, 162212, 162217, 162273, 162303, 162347, D21F 100
Patent
active
039973905
ABSTRACT:
A twin-wire paper machine and method for operating the same. The machine includes an endless carrier wire and an endless pressure wire respectively extending along closed separate loops and having common run portions between which a web is compressed while travelling from an inlet end to an outlet end of the common run portions. A pair of guide rolls are respectively situated in the loops and engage the wires in advance of the inlet end of the common run portions to direct the wires respectively along converging paths toward the inlet end of the common run portions, these converging wire paths forming an entrance region where a headbox is located for directing a stock jet through a slice defined by a pair of lips of the headbox. A forming board engages one of the wires between the inlet end of the common run portions and the guide roll which engages this one wire, and the stock jet is directed toward this one wire and the forming board engaging the same. The headbox, one of the lips thereof, and the combination of the forming board and the guide roll which engages the same wire as the forming board respectively form three units at least one of which is adjusted, by suitable adjusting mechanism, for determining the angle of the stock jet issuing from the headbox.
REFERENCES:
patent: 2911039 (1959-11-01), Hornbostel et al.
patent: 3578560 (1971-05-01), Notbohm et al.
patent: 3582467 (1971-06-01), Gustafson et al.
patent: 3726758 (1973-04-01), Parker et al.
patent: 3855057 (1974-12-01), Hill
patent: 3867252 (1975-02-01), Skrabak et al.
patent: 3915791 (1975-10-01), Langdon
Bashore S. Leon
Fisher Richard V.
Valmet Oy
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