Low-friction pull tape
View Patent ↗A pull tape for facilitating positioning of elongated items within a protective sleeve is disclosed. The pull tape is woven of filamentary members preferably using a twill or satin weave that allows floats to form on the surface of the tape that reduce friction between the tape and the sleeve when the tape is drawn through the sleeve. Preferably, the tape is formed of multifilament warp and weft yarns woven in a plain weave with additional monofilament yarns arranged in the warp direction and woven in a twill or satin weave to form the floats in the warp direction. Additional embodiments include tapes having warp members entirely of monofilaments, as well as both warp and weft members being entirely of monofilaments.
1. An elongated pull tape having a lengthwise direction and a flat planar woven structure comprising:
a plurality of multifilament first yarns extending in said lengthwise direction;
a plurality of multifilament second yarns interwoven with said first yarns, said second yarns being arranged substantially perpendicularly to said first yarns; and
a plurality of monofilament yarns being interwoven with said second yarns in said lengthwise direction such that portions of said monofilament yarns extend over two or more adjacent ones of said second yarns thereby defining a plurality of floats positioned in spaced relation in said lengthwise direction.
2. A pull tape according to claim 1 , wherein the ratio of said monofilament yarns to said multifilament first yarns is between about 1.2 to 1 to about 1 to 10.
3. A pull tape according to claim 1 , wherein said first and second multifilament yarns and said monofilament yarns are woven in a twill weave.
4. A pull tape according to claim 1 , wherein said first and second multifilament yarns and said monofilament yarns are woven in a satin weave.
5. A pull tape according to claim 1 , comprising about 60 of said multifilament first yarns having a denier of about 1200, and about 20 of said monofilament yarns, each of said monofilament yarns having a diameter of about 0.015 inches.
6. A pull tape according to claim 1 , comprising about 50 of said multifilament first yarns having a denier of about 1200, and about 60 monofilament yarns, each monofilament yarns having a diameter of about 0.010 inches.
7. A pull tape according to claim 1 , comprising about 29 of said multifilament first yarns having a denier of about 2600, and about 12 of said monofilament yarns having a diameter of about 0.015 inches.
8. A pull tape according to claim 1 , wherein said portion of said monofilament yarns defining said floats is about 30% to about 100% of the total number of said monofilament yarns extending in said lengthwise direction.
9. In combination, an elongated protective sleeve defining an interior space for receiving elongated items, and a pull tape located within said interior space, said pull tape having a lengthwise direction and a flat woven planar structure and being slidable within said space for facilitating drawing of said elongated items therethrough, said pull tape comprising:
a plurality of first multifilament yarns extending in said lengthwise direction;
a plurality of second filamentary yarns interwoven with said first multifilament yarns, said second filamentary yarns being arranged substantially perpendicularly to said first multifilament yarns; and
a plurality of third monofilament yarns being interwoven with said second filamentary yarns in said lengthwise direction such that portions of said third monofilament yarns extend over two or more adjacent ones of said second filamentary yarns, thereby defining a plurality of monofilament floats positioned in spaced relation in said lengthwise direction, said floats engaging said protective sleeve when said pull tape is pulled therethrough and reducing friction between said pull tape and said sleeve.
10. A combination according to claim 9 , wherein said second filamentary yarns comprise multifilament yarns.
11. A combination according to claim 10 , wherein the ratio of said third monofilament yarns to said first multifilament yarns is between about 1.2 to 1 to about 1 to 10.
12. An elongated pull tape having a lengthwise direction and a flat planar woven structure comprising:
a plurality of multifilament first yarns extending in said lengthwise direction;
a plurality of filamentary second yarns interwoven with said first yarns, said second yarns being arranged substantially perpendicularly to said first yarns; and
a plurality of monofilament third yarns being interwoven with said filamentary second yarns in said lengthwise direction such that portions of said monofilament yarns extend over two or more adjacent ones of said filamentary second yarns thereby defining a plurality of floats positioned in spaced relation in said lengthwise direction.
13. A pull tape according to claim 12 , wherein the ratio of said monofilament third yarns to said multifilament first yarns is between about 12 to 1 to about 1 to 10.
14. A pull tape according to claim 12 , wherein said first multifilament yarns and said second filamentary yarns and said monofilament yarns are woven in a twill weave.
15. A pull tape according to claim 12 , wherein said first multifilament yarns and said second filamentary yarns and said monofilament yarns are woven in a satin weave.
16. A pull tape according to claim 12 , comprising about 60 of said multifilament first yarns having a denier of about 1200, and about 20 of said monofilament third yarns, each of said monofilament yarns having a diameter of about 0.015 inches.
17. A pull tape according to claim 12 , comprising about 50 of said multifilament first yarns having a denier of about 1200, and about 60 of said monofilament third yarns, each of said monofilament yarns having a diameter of about 0.010 inches.
18. A pull tape according to claim 12 , comprising about 29 of said multifilament first yarns having a denier of about 2600, and about 12 of said monofilament third yarns having a diameter of about 0.015 inches.
19. A pull tape according to claim 12 , wherein said portion of said monofilament yarns defining said floats is about 30% to about 100% of the total number of said monofilament yarns extending in said lengthwise direction.