Improved flash-spun sheet material

Details Improved flash-spun sheet material Improved flash-spun sheet material

D - Textiles, Paper

04

H

D04H 3/16 (2006.01) D01D 5/11 (2006.01) D01F 1/04 (2006.01) D01F 6/04 (2006.01) D01F 6/06 (2006.01) D01F 6/30 (2006.01)

Patent

CA 2279865

Improved sheets of bonded plexifilamentary film-fibril strands spun from a polyolefin and a pigment are provided. The polyolefin comprises at least 90 % by weight of the fibril strands, and the pigment comprises between 0.05 % and 10 % by weight of the fibril strands. The sheet has a high opacity, even when the sheet is bonded to a delamination strength greater than 120 N/m. The pigment in the sheet may be titanium dioxide, a black pigment or a colored pigment.

La présente invention concerne des feuilles améliorées de brins fibrillés de filaments plexifilamentaires liés, filés à partir d'une polyoléfine et d'un pigment. La polyoléfine comprend au moins 90 % en poids de brins fibrillés et le pigment comprend entre 0,05 % et 10 % en poids de brins fibrillés. La feuille présente une opacité élevée, même lorsqu'elle est liée à une force de délimination supérieure à 120 N/m. Le pigment de la feuille peut être du dioxyde de titane, un pigment noir ou un pigment coloré.

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