Non-woven tubing and production thereof

Details Non-woven tubing and production thereof Non-woven tubing and production thereof

D - Textiles, Paper

04

H

28/9

D04H 18/00 (2006.01)

Patent

CA 1041282

ABSTRACT OF THE DISCLOSURE A method for continuously producing needled, non-woven tubing by winding a web on a stationary mandrel, multi-needling overlying turns and frictionally driving the formed tube about the periphery of the mandrel. The mandrel is tapered to accomodate shrinkage of the tube and to assist ejection of the formed tube without application of longitudinal tension on the formed tube. The mandrel preferably includes a helical surface for progressively ejecting the rotating tubing from the static mandrel. The tube product may be formed with diameters as low as 4 mm and walls as thin as 0.5 mm and is radially compressed immediately after needling.

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