Control of bulk in air laid fibrous webs

Details Control of bulk in air laid fibrous webs Control of bulk in air laid fibrous webs

1983-03-15

1984-03-20

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

19296, 156360, 264121, B32B 3100

Patent

active

044379170

ABSTRACT:
A method of increasing the caliper and bulk of air laid dry fibrous webs, particularly such webs intended for use as napkin, tissue, and absorbent paper towel products by partially drying the loose formed fibrous webs to a degree of dryness of less than 4% prior to consolidation. In the preferred embodiment uniformity of the product web caliper in the machine direction is obtained by measuring the caliper downstream of the bond curing drier and before take-up on the parent roll, output signals therefrom being transmitted to the drier for adjustment of one or more of the drier parameters. Uniformity of caliper in the cross machine direction can be optimized by providing multisectional driers in the cross machine direction, a series of output signals from the caliper sensing means being transmitted to the respective drier sections for individual adjustment of the drier parameters.

REFERENCES:
patent: 2493194 (1950-01-01), Heino
patent: 3821068 (1974-06-01), Shaw
patent: 4093765 (1978-06-01), Schmidt

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