D - Textiles – Paper – 04 – H
Patent
D - Textiles, Paper
04
H
D04H 1/04 (2006.01) B32B 5/26 (2006.01) D04H 1/54 (2006.01) D04H 13/00 (2006.01)
Patent
CA 2188783
A multilayer nonwoven thermal insulating batt is provided. The batt comprises a blend of bonding staple fibers and staple fill fibers, the fibers being formed into a multilayer batt. The bonding fibers are subsequently bonded sparingly to staple fill fibers at the points of contact to enhance the structural stability of the multilayer batt but allow delamination of the individual web layers under mechanical action. Also provided is a method of making a thermal insulating nonwoven multilayer batt comprising the steps of: (a) forming a web of bonding staple fibers and staple fill fibers such that the web has a substantially smooth side and a loose fibrous side; (b) forming a batt of multiple layers of the webs; (c) subjecting the layered batt to sufficient heat to cause bonding of the bonding staple fibers to other bonding staple fibers and staple fill fibers at points of contact within each layer and sufficient bonding between each layer to stabilize the batt yet permit delamination of the layers when the batt is subjected to mechanical action.
Matelas d'isolation thermique non tissés multicouches comportant plusieurs strates consistant en un mélange de fibres courtes de liaison et de fibres courtes de remplissage, les fibres de liaison étant légèrement fixées entre elles et avec celles de remplissage par leurs points de contact pour renforcer la stabilité structurelle du panneau multicouche tout en permettant le délaminage des strates individuelles sous l'effet de contraintes mécaniques. Procédé de fabrication desdits panneaux comportant les étapes suivantes: (a) former une strate de fibres courtes de liaison et de fibres courtes de remplissage présentant un côté sensiblement lisse et un côté fibreux brut; (b) former un matelas de plusieurs strates; (c) soumettre ledit matelas à une température suffisante pour provoquer la fixation des fibres de liaison, entre elles et avec celles de remplissage, par leurs points de contact pour stabiliser le matelas tout en permettant le délaminage des strates lorsque le panneau est soumis à des contraintes mécaniques.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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