Hybrid rope

Patent metadata

Field	Value
Publication number	US-9994994-B2
Application number	US-201314433325-A
Country	US
Kind code	B2
Filing date	Oct 3, 2013
Priority date	Oct 5, 2012
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

Hybrid rope ( 20 ) comprising a core element ( 22 ) containing high modulus fibers surrounded by at least one outer layer ( 24 ) containing wirelike metallic members ( 26 ). The core element ( 22 ) is coated ( 23 ) with a thermoplastic polyurethane or a copolyester elastomer, preferably the copolyester elastomer containing soft blocks in the range of 10 to 70 wt %. The coated material ( 23 ) on the inner core element ( 22 ) is inhibited to be pressed out in-between the wirelike members ( 26 ) of the hybrid rope ( 20 ) and the hybrid rope ( 20 ) has decreased elongation and diameter reduction after being in use.

First claim

The invention claimed is:

1. A hybrid rope comprising a core element containing high modulus fibers surrounded by at least one outer layer containing metallic members,
wherein the core element is coated with a polymer comprising a copolyester elastomer containing soft blocks in the range of 10 to 70 wt %.

2. The hybrid rope according to claim 1 , wherein a hardness Shore D of the copolyester elastomer as measured according to ISO 868 is larger than 50.

3. The hybrid rope according to claim 1 , wherein the copolyester elastomer is a copolyester block copolymer with soft blocks consisting of segments of polyester, polycarbonate, polyether or a combination thereof.

4. The hybrid rope according to claim 1 , wherein the high modulus fibers contain high molecular weight polyethylene (HMwPE), ultrahigh molecular weight polyethylene (UHMwPE), liquid crystal polymer (LCP), aramid, or PBO (poly(p-phenylene-2,6-benzobisoxazole).

5. The hybrid rope according to claim 1 , wherein the polymer is coated on the core element by extrusion.

6. The hybrid rope according to claim 1 , wherein a thickness of the polymer is larger than 0.5 mm.

7. The hybrid rope according to claim 1 , wherein the hybrid rope has a diameter in a range of 2 to 400 mm.

8. The hybrid rope according to claim 1 , further comprising a jacket surrounding the at least one outer layer, the jacket comprising a plastomer, thermoplastic, elastomer or combination thereof.

9. The hybrid rope according to claim 1 , wherein the metallic members are steel wires, steel wire strands or combination thereof.

10. The hybrid rope according to claim 9 , wherein the steel wires, the steel wire strands or the combination thereof are coated with zinc, zinc alloy or a combination thereof.

11. The hybrid rope according to claim 1 , wherein the at least one outer layer comprises two or more outer layers containing metallic members.

12. The hybrid rope according to claim 1 , wherein an additional plastomer layer is added in-between the core element and the polymer.

13. A method of manufacturing a hybrid rope, the method comprises the steps:
(a) providing a core element, wherein the core element includes high modulus fibers;
(b) coating the core element with a polymer comprising copolyester elastomer containing soft blocks in a range of 10 to 70 wt %; and
(c) twisting a plurality of metallic members together around the core element to form a metallic outer layer.

14. The hybrid rope according to claim 11 , wherein an additional plastomer layer is added in-between the core element and the polymer.

15. The method according to claim 13 , wherein the metallic members are steel wires, steel wire strands or combination thereof.

Assignees

• Bridon Int Ltd
• Dsm Ip Assets Bv

Inventors

• Amils Xavier
• Durmus Beste
• Smeets Paulus Johannes Hyacinthus Marie

Classifications

• D07B1/0686 Primary

  characterised by the core design · CPC title

• D07B2201/1016

  characterised by the use of different strands · CPC title

• D07B2201/2055

  comprising filaments or fibers · CPC title

• D07B7/025

  Preforming the wires or strands prior to closing · CPC title

• D07B2201/108

  Cylinder winding, i.e. S/Z or Z/S · CPC title