Methods for forming a fluted composite

Details Methods for forming a fluted composite Methods for forming a fluted composite

D - Textiles, Paper

21

H

D21H 23/14 (2006.01) A61F 13/15 (2006.01) A61L 15/60 (2006.01) B32B 23/00 (2006.01) D21F 9/00 (2006.01) D21F 11/00 (2006.01) D21F 11/04 (2006.01) D21F 11/14 (2006.01)

Patent

CA 2323998

Methods for forming an absorbent fibrous composite containing absorbent material dispersed in bands through the composite and along the composite's length are disclosed. The methods generally include depositing a fibrous slurry on a foraminous support (202, 204) to form a web and depositing or injecting absorbent material into the web across its width to provide a web (126) having absorbent material in bands along the composite's length. Drying the web provides a fluted absorbent composite. In one embodiment, the method is a wet-laid method and in another embodiment, the method is a foam-forming method. Preferably, the methods are twin-wire forming methods.

L'invention porte sur des procédés de formation d'un composite fibreux absorbant contenant un matériau absorbant dispersé en bandes longitudinales dans le composite. Lesdits procédés consistent à déposer une pâte fibreuse sur un support poreux (202, 204), de manière à former une toile puis à disposer ou injecter un matériau absorbant dans la toile sur sa largeur pour obtenir une toile (126) présentant des bandes absorbantes longitudinales, ce qui après séchage donne un composite absorbant cannelé. Dans l'une des exécutions, on recourt à un dépôt humide, et dans l'autre, à l'expansion. Lesdits procédés sont de préférence des procédés de formation à deux toiles.

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