Title: Woven carpet backing with fused staple fiber needled layer

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Claims: What is claimed is

1. An improved shear-resistant backing for pile fabrics prepared by needling a batt of staple fiber into a woven fabric of polypropylene yarn of continuous filaments or ribbons and then bonding the structure by fusion of the staple fiber of the batt.

2. The backing of claim 1 wherein the staple fiber is polypropylene.

3. The backing of claim 1 wherein the staple fiber is a copolyester.

4. The backing of claim 1 wherein the batt is heat bonded.

5. The backing of claim 1 wherein the woven fabric of polypropylene has a weight of from 2 to 4 oz/yd.sup.2 and the staple fiber batt weighs from 0.5 to 3 oz/yd.sup.2.

6. A shear-resistant pile fabric comprising the backing of claim 1 and having pile yarn tufted therethrough.

Other info:

Inventors: Kumar, Vijayendra (New Castle, DE, US)

Application Number: 606007
Filing Date: 1975-08-20
Publication_date: 1978-01-17
Assignee: E. I. Du Pont de Nemours and Company (Wilmington, DE)
Primary Class(es): 428/95 442/270
Other Classes:
US Patent Ref:

3542632	Nov, 1970	Eickhoff	428/95.
3605666	Sep, 1971	Kimmel	428/95.
3922454	Nov, 1975	Roecker	428/95.

Other Refs:
Primary Examiner: McCamish, Marion E.
Assistant Examiner:
Attorney: