Method for producing wet-pressed, molded tissue products

Details Method for producing wet-pressed, molded tissue products Method for producing wet-pressed, molded tissue products

2004-12-21

2008-12-09

Fortuna, José A (Department: 1791)

Paper making and fiber liberation

Processes and products

Non-uniform, irregular or configured web or sheet

C162S205000, C162S900000

Reexamination Certificate

active

07462257

ABSTRACT:
A process for producing tissue webs is disclosed. The process may include the step of partially dewatering a tissue web, subjecting the web to at least one deflection against a fabric, such as a coarse fabric, and then creping the web. During the process, after being dewatered, the tissue web is transferred from a transfer conveyor to the fabric using a pneumatic force, such as a suction force. In order to prevent liquids from rewetting the tissue web as the tissue web is being transferred to the fabric, the transfer conveyor is made from a material that inhibits or prevents liquids from flowing into the tissue web. For instance, in one embodiment, the transfer conveyor may comprise a felt comprised of small capillary materials. The felt may have an intake rate, for instance, of less than about 150 μL/s when wet, may have a mean free pore size of less than about 20 microns, and may have a minimum pore size of less than about 5 microns.

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