Multiple layer formation process for creped tissue

Details Multiple layer formation process for creped tissue Multiple layer formation process for creped tissue

1977-02-10

1979-08-28

Fisher, Richard V.

Paper making and fiber liberation

Processes and products

Non-uniform, irregular or configured web or sheet

162112, 162113, 162127, 162129, 162183, 162207, 428153, 428154, 428219, D21H 524

Patent

active

041660013

ABSTRACT:
A process for directly forming multiple layer web, and creping such webs to provide absorbent, soft and bulky, creped tissue. The process produces a laminar fibrous formation with outer layers of strongly bonded fibers separated by an intermediate central section of weakly bonded fibers, which outer layers are creped such that the crepe in one outer layer is independent of the crepe in the other outer layer. The process utilizes a multiple slice inlet with different fiber stock supplied via the inlet to form the weakly bonded central layer of the fibrous formation; the base formation is subjected to two creping operations: one side of the fibrous formation is adhered to the surface of a dryer and creped therefrom, the once-creped web is inverted, and the other side adhered to the surface of a dryer and again creped therefrom, producing finely creped, soft and bulky outer surface layers of strongly bonded fibers which are capable of delamination, each layer shearing away from the other during the creping operations because of the weakly bonded intermediate fibrous section and the final product simulating a two ply tissue in bulk and softness while having been formed as a single ply.

REFERENCES:
patent: 3879257 (1975-04-01), Gentile et al.
patent: 3903342 (1975-09-01), Roberts

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