Method of producing needled, non-woven tubing

Details Method of producing needled, non-woven tubing Method of producing needled, non-woven tubing

1976-04-19

1978-04-25

Mackey, Robert R.

Textiles: manufacturing

Textile product fabrication or treatment

Fiber entangling and interlocking

D04H 146

Patent

active

040854868

ABSTRACT:
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 accommodate 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 millimeters and walls as thin as 0.5 millimeters and is radially compressed immediately after needling.

REFERENCES:
patent: 3116533 (1964-01-01), O'Byrne
patent: 3150434 (1964-09-01), O'Byrne
patent: 3508307 (1970-04-01), Dilo
patent: 3530557 (1970-09-01), Dilo
patent: 3673024 (1972-06-01), Eriksson
patent: 3758926 (1973-09-01), Dilo
patent: 3890681 (1975-06-01), Fekete et al.
patent: 3909893 (1975-10-01), Wilde
patent: 3952121 (1976-04-01), Dilo

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