EP1546449A2 - A high-strength light-weight rope with a shaped core - Google Patents
A high-strength light-weight rope with a shaped coreInfo
- Publication number
- EP1546449A2 EP1546449A2 EP03791172A EP03791172A EP1546449A2 EP 1546449 A2 EP1546449 A2 EP 1546449A2 EP 03791172 A EP03791172 A EP 03791172A EP 03791172 A EP03791172 A EP 03791172A EP 1546449 A2 EP1546449 A2 EP 1546449A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- rope
- phase condition
- jacket
- rope according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011162 core material Substances 0.000 claims abstract description 142
- 239000012071 phase Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000007790 solid phase Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 239000007791 liquid phase Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 42
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000106 Liquid crystal polymer Polymers 0.000 claims description 5
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims description 5
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 5
- 229920003235 aromatic polyamide Polymers 0.000 claims description 5
- 229920001903 high density polyethylene Polymers 0.000 claims description 5
- 239000004700 high-density polyethylene Substances 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 5
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 4
- 229920002577 polybenzoxazole Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 239000012815 thermoplastic material Substances 0.000 description 4
- 238000009954 braiding Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 229920003253 poly(benzobisoxazole) Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/16—Auxiliary apparatus
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
- D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B5/00—Making ropes or cables from special materials or of particular form
- D07B5/12—Making ropes or cables from special materials or of particular form of low twist or low tension by processes comprising setting or straightening treatments
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
- D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1012—Rope or cable structures characterised by their internal structure
- D07B2201/102—Rope or cable structures characterised by their internal structure including a core
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1096—Rope or cable structures braided
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2048—Cores characterised by their cross-sectional shape
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2052—Cores characterised by their structure
- D07B2201/2053—Cores characterised by their structure being homogeneous
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2066—Cores characterised by the materials used
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2083—Jackets or coverings
- D07B2201/2088—Jackets or coverings having multiple layers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2083—Jackets or coverings
- D07B2201/209—Jackets or coverings comprising braided structures
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/2003—Thermoplastics
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/201—Polyolefins
- D07B2205/2014—High performance polyolefins, e.g. Dyneema or Spectra
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/2046—Polyamides, e.g. nylons
- D07B2205/205—Aramides
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/2064—Polyurethane resins
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/2096—Poly-p-phenylenebenzo-bisoxazole [PBO]
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3021—Metals
- D07B2205/3025—Steel
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/40—Machine components
- D07B2207/404—Heat treating devices; Corresponding methods
- D07B2207/4045—Heat treating devices; Corresponding methods to change the crystal structure of the load bearing material
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/40—Machine components
- D07B2207/404—Heat treating devices; Corresponding methods
- D07B2207/4059—Heat treating devices; Corresponding methods to soften the filler material
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/205—Avoiding relative movement of components
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/2055—Improving load capacity
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2038—Agriculture, forestry and fishery
Definitions
- the present invention relates to a rope with high cross-sectional symmetry having high stiffness and breaking strength.
- ropes and cables exist for different operations.
- ropes are desired, that are twisted and braided with high breaking strength and simultaneously with low mass density.
- fibres such as Aramids, Liquid Crystal Polymers, PBO and Ultra High Molecular Weight Poly Ethylene
- ropes with high breaking strength have been produced, with a breaking strength that is greater than for steel wire of the same diameter.
- the weight of such ropes is only one-sixth of the weight of a same size steel wire.
- One of the advantages of such ropes is that they are much easier to handle than steel wire.
- Applications for such ropes are e.g. in fishing with nets and trawls, where the ropes are used for back strop attachments, bridles and sweep lines.
- a common type of ropes used for trawl warps, bridles and sweep lines are twisted steel wire ropes.
- twisted steel wire rope the most common construction is based on seven strands where one is in the centre and the remaining six are twisted around the centre strand. The centre strand is therefore acting as a core filling up the void.
- steel wire ropes the core is often made from other materials like a bundle of fibres, twine or even synthetic ropes. As the steel wire is very stiff and harder than such softer materials, the core will be clenched and fill eventual voids. The result is that these soft core steel ropes have high strength, excellent abrasion resistance, circular cross-section and the stiffness is high in axial as well as in radial directions.
- the object of the present invention is to provide a strong rope by implementing a stiff core in a rope jacket in such a way that the core will preserve its stiffness and fill out the inside vacancies within the rope permanently. Twisting or braiding a fibre rope around a core which is made of thermoplastic material, can accomplish this. During the production process the rope is heated up and stretched in such a way that it will be permanently elongated. The thermoplastic core goes through a transition from a first solid phase to second phase (typically a liquid or semi-liquid phase) and back to solid phase by means of the heating. During the second phase the core material will adapt to the void space within the rope jacket in which it is enclosed. The rope is then cooled down under tension until the core has regained its solid phase.
- first solid phase typically a liquid or semi-liquid phase
- thermoplastic material in the liquid phase it may be covered by a sheet layer, e.g. overbraid, which has a higher softening point than the core material.
- a sheet layer e.g. overbraid, which has a higher softening point than the core material.
- ropes of the present invention have sufficient strength for use as towing wires for towing fish trawls, where conventionally much heavier steel wires have been used, which are sensitive to corrosion.
- the present invention relates to a rope having high stiffness and breaking strength, comprising a core, and at least one jacket layer enclosing the core, wherein the high breaking strength is obtained by changing the phase condition of the core and optionally said at least one jacket layer from a first phase condition to a second phase condition while stretching the cable, thereby obtaining a relative movement of said at least one jacket layer and the core, so that the vacancies between the core and jacket are eliminated.
- a rope with stiffness and high breaking strength is thus obtained.
- the core comprises a core material and a cover sheet layer, e.g. braided cover, enclosing said core material. Thereby it is prevented that the core material diffuses, in the second phase condition, towards the surface of the at least one sheet layer/jacket.
- the core material may be selected from any of a number of suitable thermoplastic materials (i.e., materials that become reversibly softer when heated and retain original properties (hardness) when cooled down).
- the core is made of a plastic material, such as typically a thermoplastic polymer, a suitable polymer can be selected e.g. from nylon, olefin, or high-density polyethylene (HDPE), chlorinated polyethylene (CPE), polyester, or a combination thereof.
- the core comprises additionally a central inner core (or "strength member") with different material properties than the main core material, for added strength and/or stiffness.
- the central inner core is preferably made from a fibre thread or filament, twinned or braided, from a suitable polymer, a single thread or metal wire, e.g. a lead or steel wire.
- the first phase condition is typically a solid phase condition for both the core and the jacket.
- the rope is treated such that the phase of the core changes while the phase conditions of the jacket remain unchanged.
- the second phase condition for the core is preferably a liquid phase condition but may also be an intermediate phase (semi-liquid phase) or a mixture of a liquid and solid phase, e.g. such that substantially all of the core is in a liquid or semi-liquid phase, though some parts/filaments may remain solid or semi-solid.
- the phase condition of the jacket is altered but generally however, the jacket remains substantially solid during the processing. (In these embodiments, a portion of the jacket, e.g. filaments or threads with a lower softening point than the main strands of the jacket, go through a phase transition and diffuse further in between the main strands of the jacket.)
- the at least one jacket layer is preferably made of a plurality of strands where each strand typically is a bundle of fibre filaments, threads or yarns; the jacket may be braided in such a way that the strands form at least three-strand laid rope, such as a four- or six-strand laid rope.
- the strands may form a strand braided rope, with, e.g. 6, 8, 10, 12, 14, 16, 18, 20, 24, 28 or 32 strands braided.
- the strands form a 6 braided rope with the core in the middle, i.e. a 1+6 construction.
- the jacket comprises an inner sheet layer jacket with a plurality of strands (e.g. 3, 4, or 6) and one or more outer sheet jackets of strands, each outer sheet jacket comprising a plurality of strands, such as described above.
- the jacket may be made of one or more suitable materials, typically from one or more polymer fibre material such as but not limited to nylon, polyethylene, including high-density and ultra high-molecular weight polyethylene polymers (e.g. DyneemaTM (DSM, Herleen, Netherlands)), aramids, liquid crystal polymers, PBO (polybenzoxazole polymer) or polyester, and any combination thereof, such combinations may also comprise steel wires or in certain embodiment the jacket additionally comprises thermoplastic fibre threads, that during heating will soften or melt to blend in with the bulk material of the jacket.
- polymer fibre material such as but not limited to nylon, polyethylene, including high-density and ultra high-molecular weight polyethylene polymers (e.g. DyneemaTM (DSM, Herleen, Netherlands)), aramids, liquid crystal polymers, PBO (polybenzoxazole polymer) or polyester, and any combination thereof, such combinations may also comprise steel wires or in certain embodiment the jacket additionally comprises thermoplastic fibre thread
- the jacket is in certain embodiments enclosed by a cover (6) which may be braided, coextruded or pulltruded and is preferably from a material selected from any of the materials listed above or a combination thereof (such as, e.g., from nylon, olefin, polypropylene, thermoplastic filaments, polyester, aramids, liquid crystal Polymers, PBO and polyethylene, including Ultra High Molecular Weight Poly Ethylene, (e.g. DyneemaTM), and any combination thereof.
- the threads and the strands in the at least one jacket layer are preferably internally fixed together. The force is thereby divided between all the strands and their threads, which co-operate.
- the at least one sheet layer is elongated such that the fibres in said at least one sheet layer have equal length.
- the strength is therefore not imposed on one or several fibres but on all the fibres.
- Such internal fixing may be obtained by contacting (impregnating) the jacket (optionally with the core mounted inside) with an adhesion material, such as preferably polyurethane or another material with similar suitable properties, e.g. by immersion, or by other suitable techniques such as spraying or using wet rollers.
- the changing of the phase condition is preferably by heating the core and optionally said at least one jacket layer.
- the temperature for the phase change is in the range of 50-180°C, and preferably in the range of 100-130°C, or in the range of 110-120°C, such as, e.g., about 110, 112, or 115°C.
- the exact temperature or temperature range will, however, depend on the material or combination of materials comprised in the core, and their properties and softening point(s).
- the relative movement of said at least one jacket layer and the core is preferably effected through elongating lengthwise said at least one jacket layer, and optionally also the core.
- the elongation results in that the at least one jacket layer is clenched widthwise (cross-sectional), such that the core material when softened fills up in vacancies between the core and said at least one jacket layer.
- the cross- sectional symmetry of the rope may after the clenching be circular. However, other cross section symmetries are also possible.
- the present invention provides a method for producing rope with high stiffness breaking strength, such as described above, the method comprising the steps of: - providing a core,
- the stretching of the core and optionally said at least one sheet layer is adapted to eliminate vacancies between the core and said at least one sheet layer, whereby high stiffness and breaking strength is obtained.
- the at least one jacket layer and optionally the core are brought in contact with an adhesion material as described above, so that the fibres in the sheet layer are internally joined together prior to the changing of the phase condition of the core.
- Polyurethane which optionally can be diluted in aqueous solution, is preferred as an adhesion material.
- the method further comprises removing the excess of said adhesion material and/or optionally moisture from said at least one jacket layer and the core prior to the stretching step.
- the optimal core temperature is 110-117°C during the heating.
- the present invention relates to an apparatus for producing rope as described above, with high stiffness and breaking strength comprising:
- said means for arranging at least one sheet layer around the core is a braid mechanism. Changing the phase condition may suitably be effected through any type pf heat supply mechanism.
- the apparatus further comprises means for introducing a fastening or adhesion material within said at least one jacket layer.
- Such means may be immersing means to immerse said at least on jacket layer and optionally the core into said fastening or adhesion material, as described above.
- the excess of said material is preferably removed from the rope and optionally the moisture. This may be done in drier or similar means.
- a tensing mechanism is applied to apply tension to the rope and preferably to effect relative movement between said at least one jacket layer and the core.
- Fig. 1 shows the core (1) as a cylindrical bar but other cross-sectional shapes may equally be used as the core is reshaped during the production process according to the invention.
- Fig. 2 shows the core 1 as well but in the centre there is a strength member 2 which can be useful for some thermoplastic core materials, as discussed herein.
- Fig. 3 is a view of the core with a surrounding sheet 3 from a material, which has higher thermal stability than the core material.
- This sheet can be co-extruded, pulltruded, wrapped, twisted or overbraided or made by a combination of two or more of said methods.
- Fig.4 is showing the rope jacket 4 around the core.
- the rope jacket can be braided or twisted.
- the particular jacket illustrated in the drawing is a braided rope jacket.
- Each strand 5 is a twisted bundle of filaments or yarns.
- Fig. 5 shows the core 1 unravelled after the phase change process.
- the pattern 7 is created by the clenching and elongation during the phase shifts of the core material.
- Fig. 6 shows a view of a processed rope with a sheet cover 6.
- the cover can be co-extruded, pulltruded, wrapped, twisted or overbraided or made by a combination of two or more of said methods.
- the core 1 is extruded with or without a strength member 2 in the middle.
- the material used is thermoplastic material of any kind but preferably a polymer.
- the core is cooled down until it reaches solid state.
- a sheet 3 is applied with a co-extrusion, pulltrusion, wrapping, twisting or overbraiding or a multiple or combination of the methods.
- the function of the sheet 3 is to prevent uncontrolled flow of the liquid or semi-liquid core during processing. In some cases however, it is desirable to have the core flowing out to the surface of the rope jacket and in such embodiments sheet 3 is not present in the construction.
- the core 2 with or without sheet 3 is fed into the rope 4 centre during braiding or laying of the strands 5. The rope is now ready for impregnation.
- the impregnation materials can be solvents of polymers, polyurethane, bitumen or latex or a blend of those materials.
- a cover 6 can be added at this stage or after the processing. If the core 1 is used without a sheet layer 3 it is advantageous to add such cover 6 prior to the processing but the cover material has to be able to withstand the temperature used in the process.
- the rope with core is now tensioned and heated up, by means of suitable medium, liquid or air, to the appropriate temperature and simultaneously stretched until it elongates permanently.
- core 1 shifts from solid phase to a liquid or semi- liquid phase.
- the force applied to the axial direction of the rope will partly be transferred into forces working perpendicular to the rope. These perpendicular forces will move the now liquid core material into the inside voids of the rope and fill them up, to the extent that the core sheet layer 3 allows the penetration of the core material.
- the core 1 material when in the second phase condition typically liquid or semi-liquid phase
- it will penetrate in-between the strands of the rope jacket and eventually to the surface of the jacket.
- the cover sheet 6 has been applied prior to the process it will stop the fluid core material from entering the surface of the rope 4.
- the rope construction is now cooled down and the tension is simultaneously lowered.
- the rope has now undergone permanent change involving shifting phase of the core and both axial and radial stiffness has been achieved by rearranging the rope sub-elements.
Landscapes
- Ropes Or Cables (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IS6536 | 2002-08-30 | ||
IS653602 | 2002-08-30 | ||
PCT/IS2003/000025 WO2004020732A2 (en) | 2002-08-30 | 2003-09-01 | A high-strength light-weight rope with a shaped core |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1546449A2 true EP1546449A2 (en) | 2005-06-29 |
EP1546449B1 EP1546449B1 (en) | 2018-10-31 |
Family
ID=36701430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03791172.4A Expired - Lifetime EP1546449B1 (en) | 2002-08-30 | 2003-09-01 | A high-strength light-weight rope with a shaped core |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1546449B1 (en) |
AU (1) | AU2003259549A1 (en) |
IS (1) | IS2927B (en) |
NO (1) | NO331468B1 (en) |
NZ (1) | NZ543203A (en) |
WO (1) | WO2004020732A2 (en) |
Cited By (1)
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---|---|---|---|---|
EP3422846A4 (en) * | 2016-03-04 | 2019-10-30 | Hampidjan HF. | High resolution headline sonar cable |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8020480B2 (en) | 2008-04-01 | 2011-09-20 | Ion Geophysical Corporation | Self-lubricating ropes useful in the isolation sections of ocean-bottom cables |
EP2112259A1 (en) * | 2008-04-22 | 2009-10-28 | DSM IP Assets B.V. | Abrasion resistant fabric |
DK2313214T3 (en) | 2008-05-22 | 2023-09-18 | Hampidjan Hf | IMPROVED HEADLINE SONAR CABLE |
LT2456918T (en) * | 2009-07-22 | 2016-10-10 | Hampidjan Hf | Method of manufacturing a lower drag helix rope for pelagic trawls |
EP2473669B1 (en) | 2009-09-01 | 2016-06-29 | Hampidjan HF | Synthetic rope for powered blocks and methods for production |
EP2673414B1 (en) | 2011-02-07 | 2017-09-06 | Hampidjan HF | Braided rope, suitable to be used as a towing warp, comprising changing properties in the length direction thereof |
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WO2013072941A2 (en) | 2011-11-16 | 2013-05-23 | Hampidjan Hf. | High traction synthetic rope for powered blocks and methods |
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WO2016162569A1 (en) * | 2015-04-10 | 2016-10-13 | Lankhorst Euronete Portugal, S.A. | Sealed rope, use thereof and method for production |
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RU2749526C1 (en) * | 2017-11-01 | 2021-06-11 | Хэмпиджан Хф. | Bending fatigue-resistant composite cable |
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2003
- 2003-09-01 WO PCT/IS2003/000025 patent/WO2004020732A2/en not_active Application Discontinuation
- 2003-09-01 AU AU2003259549A patent/AU2003259549A1/en not_active Abandoned
- 2003-09-01 EP EP03791172.4A patent/EP1546449B1/en not_active Expired - Lifetime
- 2003-09-01 NZ NZ543203A patent/NZ543203A/en not_active IP Right Cessation
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2005
- 2005-02-16 NO NO20050842A patent/NO331468B1/en not_active IP Right Cessation
- 2005-03-30 IS IS7779A patent/IS2927B/en unknown
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EP3422846A4 (en) * | 2016-03-04 | 2019-10-30 | Hampidjan HF. | High resolution headline sonar cable |
Also Published As
Publication number | Publication date |
---|---|
IS2927B (en) | 2015-09-15 |
NZ543203A (en) | 2007-06-29 |
EP1546449B1 (en) | 2018-10-31 |
IS7779A (en) | 2005-03-30 |
AU2003259549A8 (en) | 2004-03-19 |
AU2003259549A1 (en) | 2004-03-19 |
NO20050842L (en) | 2005-03-09 |
NO331468B1 (en) | 2012-01-09 |
WO2004020732A2 (en) | 2004-03-11 |
WO2004020732A3 (en) | 2005-04-07 |
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