Method of producing a nonwoven material

Paper making and fiber liberation – Processes and products – Conditioning – preparing or repairing of apparatus

Reexamination Certificate

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Details

C162S101000, C162S103000, C162S104000, C162S124000, C156S062200, C264S280000

Reexamination Certificate

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07422660

ABSTRACT:
Method of producing a nonwoven material, includes forming a web of continuous filaments on a forming member (12) and applying a wet- or foam formed fiber dispersion containing natural fibers and/or synthetic staple fibers on top of the continuous filaments. A fibrous web is thus formed containing continuous filaments and natural fibers and/or synthetic staple fibers, this web subsequently being hydroentangled to form a nonwoven material. Moisture is applied to the web of continuous filaments under a low pressure before laying the wet- or foam formed fiber dispersion on the web of continuous filaments, avoiding any substantial bonding between the filaments in the web.

REFERENCES:
patent: 4775579 (1988-10-01), Hagy et al.
patent: 4808467 (1989-02-01), Suskind et al.
patent: 6163943 (2000-12-01), Johansson et al.
patent: 6836938 (2005-01-01), Fleissner
patent: 2002/0088099 (2002-07-01), Ahoniemi
patent: 2003/0045196 (2003-03-01), Kumehara
patent: 0 308 320 (1989-03-01), None
patent: 0 315 507 (1989-05-01), None
patent: 1 215 325 (2002-06-01), None
patent: 1 288 362 (2003-03-01), None
patent: 99/22059 (1999-05-01), None

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