Surface treating tissue webs via patterned spraying

Details Surface treating tissue webs via patterned spraying Surface treating tissue webs via patterned spraying

2011-08-02

2011-08-02

Fortuna, José A (Department: 1741)

Paper making and fiber liberation

Processes and products

Non-fiber additive

C162S134000, C162S135000, C162S204000

Reexamination Certificate

active

07988828

ABSTRACT:
Tissue webs, such as are useful for making bath tissue, can be surface-treated in a pattern with selected papermaking chemicals, such as debonders and strength agents, to selectively improve the directional properties of the resulting tissue product, particularly the cross-machine direction strength properties. The pattern can be applied to the tissue sheet by spraying the selected chemical outwardly through a pattern of open areas in the shell of a rotating hollow roll, where the pattern of open areas corresponds to the desired pattern of chemical deposited on the surface of the tissue web.

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