Formation of sheet material using hydroentanglement

D - Textiles – Paper – 04 – H

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D04H 1/46 (2006.01) D04H 1/54 (2006.01)

Patent

CA 2467589

Sheet material is made from a mixture of base fibres, such as leather fibres, and bi-component synthetic fibres which have outer layers which melt at a lower temperature than their inner cores. The fibres are mixed, formed into a web and then heated so that the synthetic fibres fuse together to form a network within the web. The base fibres are then tangled, whilst constrained by the network, preferably using hydroentanglement. A high quality reconstituted leather sheet material can be produced.

L'invention concerne un matériau en feuille fabriqué à partir d'un mélange de fibres de base, notamment de fibres de cuir, et de fibres synthétiques à deux composants dont les couches extérieures fondent à une température inférieure à celle de leurs coeurs. Les fibres sont mélangées, mises sous forme de toile puis chauffées de façon que les fibres synthétiques fusionnent afin de former un réseau à l'intérieur de la toile. Les fibres de base sont alors enchevêtrées, sous contrainte du réseau, de préférence au moyen de liage par jet d'eau. Il est ainsi possible d'obtenir un matériau de cuir reconstitué en feuille de très bonne qualité.

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