Multicomponent fibers comprising a dissolvable starch...

D - Textiles – Paper – 01 – F

Patent

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Details

D01F 8/18 (2006.01) D01F 8/06 (2006.01) D01F 8/10 (2006.01) D01F 8/12 (2006.01) D01F 8/14 (2006.01) D04H 1/42 (2006.01)

Patent

CA 2505164

A melt spinnable fiber is provided that comprises a first component comprising a thermoplastic polymer, and a second component comprising thermoplastic starch where the second component is not encompassed by another component or components or if encompassed by another component or components then the second component encompasses a hollow core. A particular use of such a fiber is for removal of the second component in the presence of a solvent in order to produce fibers with desired properties. An agent may be present in the second component for controlling the rate of removal of the second component thereby allowing for physical manipulation of the fiber prior to complete removal of the component. The invention is also directed to nonwoven webs and disposable articles comprising the fibers.

La présente invention a trait à une fibre apte au filage par fusion comportant un premier composant incluant un polymère thermoplastique, et un deuxième composant incluant de l'amidon thermoplastique, dans laquelle le deuxième composant n'est pas entouré d'un autre ou d'autres composants ou, si tel est le cas, alors le deuxième composant entoure un noyau creux. Une utilisation particulière d'une telle fibre consiste en l'élimination du deuxième composant en présence d'un solvant en vue de produire des fibres avec des propriétés souhaitées. Un agent peut être présent dans le deuxième composant pour contrôler le taux d'élimination du deuxième composant permettant ainsi la manipulation physique de la fibre préalablement à l'élimination complète du composant. L'invention a également trait à des nappes non-tissés et à des articles jetables comportant de telles fibres.

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