Process and apparatus for forming a paper web having improved bu

Details Process and apparatus for forming a paper web having improved bu Process and apparatus for forming a paper web having improved bu

1977-05-16

1978-07-25

Fisher, Richard V.

Paper making and fiber liberation

Processes and products

Non-uniform, irregular or configured web or sheet

162203, 162207, 162290, 162301, 162307, 162359, D21F 902, D21H 502, D21H 506

Patent

active

041027370

ABSTRACT:
An improved low-density papermaking process particularly suited for use in conjunction with twin wire formation style papermaking machines is disclosed. In a particularly preferred embodiment, a foraminous drying/imprinting fabric conventionally utilized to thermally predry a moist paper web is extended to the twin wire formation zone, thereby eliminating one of the conventionally utilized Fourdrinier wire sections. Extension of the drying/imprinting fabric to the formation zone eliminates disturbance of the deflected portions of the paper web which fill the interstices of the drying/imprinting fabric during formation of the web, thus producing unexpected improvements in finished product bulk and absorptive capacity.

REFERENCES:
patent: 3224928 (1961-12-01), Lee et al.
patent: 3301746 (1967-01-01), Sanford et al.
patent: 3373080 (1968-03-01), Appel et al.
patent: 3400045 (1968-09-01), Graham
patent: 3434922 (1969-03-01), Ely
patent: 3470063 (1969-09-01), Sanford
patent: 3537954 (1970-11-01), Justus
patent: 3745066 (1973-07-01), Bleuer
patent: 3994771 (1976-11-01), Morgan, Jr. et al.
patent: 4055461 (1977-10-01), Turunen

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