Method for increasing the internal bulk of throughdried tissue

Details Method for increasing the internal bulk of throughdried tissue Method for increasing the internal bulk of throughdried tissue

1994-09-14

1996-04-23

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-uniform, irregular or configured web or sheet

162109, 162111, 162115, 162207, D21F 1100

Patent

active

055100015

ABSTRACT:
The internal bulk of a tissue web can be improved during manufacturing of the basesheet by subjecting the tissue web to differential pressure while supported on a coarse fabric at a consistency of about 30 percent or greater. The differential pressure, such as by applying vacuum suction to the underside of the coarse fabric, causes the wet web to deflect into the openings or depressions in the fabric and "pop" back, resulting in a substantial gain in thickness or internal bulk. The method is especially adapted to improve the internal bulk of wet-pressed tissue webs.

REFERENCES:
patent: 3301746 (1967-01-01), Sanford et al.
patent: 3303576 (1967-02-01), Sisson
patent: 3905863 (1975-09-01), Ayers
patent: 4356059 (1982-10-01), Hostetler
patent: 4637859 (1987-01-01), Trokhan
patent: 4894118 (1990-01-01), Edwards et al.

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