Veil with a PVOH fibre binding agent

Details Veil with a PVOH fibre binding agent Veil with a PVOH fibre binding agent

2003-03-19

2008-07-22

Ruddock, Ula C (Department: 1794)

Paper making and fiber liberation

Processes and products

Plural fiber containing

C162S146000, C162S148000, C162S149000, C162S156000, C162S157200, C156S062200, C156S062400, C156S296000, C156S308200, C156S309600

Reexamination Certificate

active

07402225

ABSTRACT:
The process according to the invention comprises:a step in which chopped filaments and discontinuous PVOH fibers are dispersed in a process water, followed bya step in which a bed is formed in a forming device by passing the dispersion over a forming cloth through which the process water is drained, the filaments and fibers being retained on said cloth, followed bya heat treatment step in a stoving device.The PVOH fibers impart rigidity to the bed of fibers being formed. This process provides a veil with a very high tensile strength for low proportions of binder.

REFERENCES:
patent: 2003/0008586 (2003-01-01), Kajander et al.
patent: 28 35 935 (1979-03-01), None
patent: 2 709 485 (1995-03-01), None
patent: 01/75204 (2001-10-01), None

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