EP3967799A1 - Corde textile comprenant un fil retors et procede de fabrication d'un fil retors - Google Patents

Corde textile comprenant un fil retors et procede de fabrication d'un fil retors Download PDF

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Publication number
EP3967799A1
EP3967799A1 EP20195558.0A EP20195558A EP3967799A1 EP 3967799 A1 EP3967799 A1 EP 3967799A1 EP 20195558 A EP20195558 A EP 20195558A EP 3967799 A1 EP3967799 A1 EP 3967799A1
Authority
EP
European Patent Office
Prior art keywords
yarn
rope
fibers
length
core
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.)
Pending
Application number
EP20195558.0A
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German (de)
English (en)
Inventor
Arno DI REITER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teufelberger Fiber Rope GmbH
Original Assignee
Teufelberger Fiber Rope GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Teufelberger Fiber Rope GmbH filed Critical Teufelberger Fiber Rope GmbH
Priority to EP20195558.0A priority Critical patent/EP3967799A1/fr
Priority to US17/468,959 priority patent/US11802372B2/en
Publication of EP3967799A1 publication Critical patent/EP3967799A1/fr
Pending legal-status Critical Current

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    • 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
    • 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
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/18—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by combining fibres, filaments, or yarns, having different shrinkage characteristics
    • 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
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B29/00—Apparatus for mountaineering
    • A63B29/02—Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons
    • A63B29/028—Ropes specially adapted for mountaineering
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • D06C7/02—Setting
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/147—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising electric conductors or elements for information transfer
    • 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
    • D07B2201/1092—Parallel strands
    • 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
    • D07B2201/2015—Strands
    • D07B2201/2036—Strands characterised by the use of different wires or filaments
    • 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
    • D07B2201/2015—Strands
    • D07B2201/2041—Strands 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
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2092—Jackets or coverings characterised by the materials used
    • 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
    • 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
    • D07B2205/2039—Polyesters
    • 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
    • D07B2205/2039—Polyesters
    • D07B2205/2042—High performance polyesters, e.g. Vectran
    • 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
    • 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
    • D07B2205/2096—Poly-p-phenylenebenzo-bisoxazole [PBO]
    • 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
    • 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
    • D07B2401/2065—Reducing wear
    • D07B2401/2075—Reducing wear externally
    • 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
    • D07B2501/2069—Climbing or tents

Definitions

  • the invention relates to a rope made of textile fiber material, comprising a rope core and a sheath surrounding the rope core.
  • Fiber ropes from various fields of application are known from the prior art. For example, fiber ropes are used to secure people as climbing ropes, cords or lanyards. Ropes can also be used in the mechanical sector, for example as winch ropes.
  • the cables described herein are all designed to have a diameter of 5 mm to 60 mm.
  • the fiber ropes should have a predetermined cut resistance.
  • dynamic mountain ropes are used to secure the climber against falling and to slow down a fall.
  • Mountain ropes are used in alpine terrain, among other things, where they are often exposed to rocky edges - both under static loads and under dynamic fall loads. It can be seen that such ropes should have a high cut resistance in order to avoid accidents.
  • the EP 0 150 702 A2 proposes to make a mountain rope that should have a higher durability when detouring around sharp edges.
  • the rope core or the entire rope is wrapped, braided or braided with monofilaments or wires.
  • high-strength fibers in particular aramid, generally have a higher cut resistance than conventional fibers such as polyamide.
  • US6,050,077 it is known to produce a safety mountaineering rope that includes a sheath composed of a blend of high-strength and non-high-strength fibers, thereby making the rope better in the sharp edge test.
  • high-strength fibers have disadvantages.
  • high-strength fibers have very low elongation, making them poorly suited to braking a fall, i.e. absorbing energy through elongation.
  • a rope made of textile fiber material comprising a rope core and a sheath surrounding the rope core, the sheath, an intermediate sheath located between the sheath and the cable core and/or a reinforcement located between the sheath and the cable core having an excess length of thread
  • the overlength twisted yarn is formed by comprising at least a first yarn and a second yarn twisted together, the first yarn having a greater length than the second yarn measured in an untwisted state of a unit length of the twisted yarn .
  • the overlength twist in the rope of the present invention allows some fibers to be in a slack state even when the rope is taut. If the rope and the thread contained in it are stretched with excess length, only this thread is stretched due to the shorter length of the second thread and the first thread is still present without tension due to the greater length. Since, as already mentioned in the introduction, fibers have a lower cut resistance under tension, the longer length of the first yarn enables increased cut resistance in the tensioned state of the rope.
  • a fiber rope which has increased cut resistance and can be metal-free at least on the surface, whereby the risk of injury in the event of wire breakage is avoided.
  • metal wires with an electrical conductivity could be present inside the cable, which means that they can be used, for example, as conductors or sensors.
  • the rope according to the invention is particularly suitable for use as a mountaineering rope, as a rope for connecting means, for slings or also as a winch rope.
  • the first yarn comprises high-strength fibers, preferably p-aramid fibers, m-aramid fibers, UHMWPE fibers or PBO fibers.
  • high-strength fibers preferably p-aramid fibers, m-aramid fibers, UHMWPE fibers or PBO fibers.
  • the second yarn comprises non-high-strength fibers, preferably PA fibers, PES fibers or PP fibers. Since non-high tenacity fibers usually have a higher elongation than high tenacity fibers, it is preferable for some applications to make the load-bearing part of the twisted yarn, i.e. the second yarn, from non-high tenacity fibers. This is particularly preferred for mountain ropes so that the second yarn can better absorb energy through stretching.
  • the first yarn is at least 5%, preferably at least 8%, particularly preferably at least 12% longer than the second yarn, measured in the untwisted state of the unit length of the thread.
  • the first yarn is long enough to be tension-free in the tensioned state of the cable or the overlength twine or the second yarn, even if the cable or the excess length twine or the first yarn is stretched.
  • the twine is preferably designed in such a way that the proportion by weight of the second yarn in the twine with excess length is 30% to 90%, preferably 40% to 75%. This provides a good ratio between the first yarn and the second yarn, allowing the second yarn to absorb sufficient energy under tension while allowing the first yarn to have sufficient levels to perform its cut-resistance function.
  • the proportion by weight of the overlength thread in the sheath, in the intermediate sheath and/or in the reinforcement is 50% to 100% of the sheath, the intermediate sheath or the reinforcement. It goes without saying that the choice of the proportion of twine in the rope depends to a large extent on the desired depends on the application, so that less yarn with excess length can be used for other applications.
  • the rope core of the rope according to the invention can also be structured differently depending on the application.
  • the cable core is preferably made up of one or more twisted or braided cores.
  • the rope according to the invention When used as a winch rope, however, the rope according to the invention generally comprises only one core as the rope core.
  • the rope core can comprise non-high-strength fibers, preferably PA fibers, PES fibers or PP fibers.
  • the rope can be designed, for example, as a climbing rope according to the EN892 standard. In these embodiments, the use of the rope as a climbing rope is particularly appropriate.
  • the rope core can also include high-strength fibers, preferably aramid fibers, UHMWPE fibers, PBO fibers or Vectran fibers. This embodiment is preferred in particular for use as a winch cable.
  • the diameter of the cable is 5 mm to 60 mm, preferably 5 mm to 13 mm.
  • the extra-long twine for the rope according to the invention can be produced in various design variants. However, the following two alternative production processes are particularly preferably used.
  • two yarns are used which are manufactured in such a way that they shrink at different rates.
  • fibers of different materials can be used for this.
  • the shrinking process is preferably carried out in an autoclave. Before the twine is introduced into the autoclave, it is preferably prepared to enable defined shrinkage.
  • the processing can particularly preferably be carried out by knitting, the knitted fabric being separated again after the shrinking process.
  • the type of processing of the threads, e.g. by knitting, the selection of the temperature and/or the pressure in the autoclave can be made by a person skilled in the art.
  • two yarns can also be used that are manufactured in the same way and whose fibers are made of the same materials.
  • the production of the rope according to the invention is usually carried out in one step, with the rope core or cores being introduced into a braiding machine and, among other things, being braided with extra-long thread, whereby the sheath and, if necessary, the intermediate sheath and/or the reinforcement arises.
  • figure 1 shows the cross section of a rope 1.
  • the rope 1 comprises a rope core 2 and a sheathing 3 surrounding the rope core 2.
  • the rope 1 is made of a textile fiber material, ie both the rope core 2 and the sheathing 3 are made of textile fiber material made.
  • the rope 1 is preferably made metal-free, apart from optional connecting elements or clamps that are attached to the ends of the rope 1 or at another point on the rope 1, or functional, electrically conductive wires routed in the rope 1, which can be used, for example, as current conductors, information conductors or sensor serve.
  • the cable 1 can optionally have an intermediate sheath 4 which is provided between the cable core 2 and the sheath 3 .
  • this intermediate jacket 4 can also be made of textile fiber material and be metal-free.
  • a textile, preferably metal-free, reinforcement (not shown) can also be used, which is understood here to mean a non-covering intermediate jacket.
  • the rope core 2 has twelve cores 5 .
  • the rope core can also have only one core 5 or more than one core 5 .
  • the cores 5 are, for example, twisted or braided, but could also be made in a different way.
  • the rope 1 described herein can be used in various applications, for example as a mountain rope, as a rope for lanyards, for slings or as a winch rope.
  • the rope 1 When used as a mountaineering rope, the rope 1 is used, for example, by a climber to protect against falls or is also used as a static accessory cord for makeshift rescue techniques.
  • an arborist can use the rope 1 as a lanyard/lanyard, where the rope 1 is looped around the tree 1 and hooked into an arborist's harness, allowing the arborist to brace themselves on the tree in any vertical position can.
  • the rope 1 is used as an auxiliary rope when climbing.
  • When used as a winch cable this is wound up on a winch and is therefore used in mechanical operation, in contrast to the aforementioned uses, and not to prevent people from falling.
  • the rope 1 can have a diameter of 5 mm to 60 mm, preferably 5 mm to 13 mm.
  • the rope core 2 should have advantageous dynamic properties.
  • the Rope core not high-strength fibers, preferably polyamide (PA) fibers.
  • the non-high-strength fibers can also be polyester (PES) fibers or polypropylene (PP) fibers.
  • the cable core 2 can also have high-strength fibers.
  • “high-strength” is understood to mean fibers with a tensile strength of at least 14 cN/dtex, preferably a tensile strength greater than 24 cN/dtex, particularly preferably greater than 30 cN/dtex.
  • UHMWPE fibers including Dyneema®
  • aramid fibers including Dyneema®
  • LCP fibers including Vectran
  • PBO fibers are known as high-strength fiber types with corresponding tensile strengths.
  • the rope core 2 or the cores 5 can also comprise a mixture of high-strength fibers and non-high-strength fibers.
  • said sheath 3, the intermediate sheath 4 and/or the reinforcement comprises the following with reference to FIG Figures 2 and 3 explained thread 6 with excess length ⁇ .
  • the casing 3, the intermediate casing 4 and/or the reinforcement can be made entirely or partially from a plurality of threads 6 with an excess length ⁇ .
  • the sheathing 3 and the intermediate sheathing 4 are usually braided, so that a plurality of threads 6 with an excess length ⁇ can be braided together, optionally with the addition of other threads.
  • the proportion by weight of the thread 6 with excess length ⁇ in the sheath 3, in the intermediate sheath 4 and/or in the reinforcement is 50% to 100% in each case.
  • the thread 6 is shown with excess length ⁇ , which can be produced with an indefinite length and wound up on at least one bobbin before the production of the casing 3, the intermediate casing 4 or the reinforcement.
  • an arbitrarily selected unit length E of the twisted yarn 6 with excess length ⁇ is also shown.
  • the numerical size of the unit length E can be chosen arbitrarily, for example as 1 m.
  • the invention is completely independent of the length actually chosen, as will be explained below, and is only used to determine the excess length ⁇ of the yarn 7 in the twine 6 with excess length ⁇ .
  • twisted yarns are made by twisting multiple yarns.
  • the thread 6 explained here with excess length ⁇ comprises a first yarn 7 and a second yarn 8 twisted together.
  • the twisted state of the twisted yarn 6 with excess length ⁇ is in figure 2 shown.
  • the actual length of the first yarn 7 in the untwisted state is greater than the length of the second yarn 8 or the unit length E.
  • the first yarn 7 is at least 5%, preferably at least 8%, more preferably at least 12% longer than the second yarn 8, measured in the untwisted state of the unit length E of the thread 6.
  • An upper limit of the length by which the first yarn 7 is longer than the second yarn 8 can be 30%, for example, this upper limit usually being limited only by the manufacturing process.
  • measuring the length of the first yarn 7 and the second yarn 8 in the untwisted state of the unit length E either in the tension-free State or under a certain bias, for example 0.5 +/- 0.1 cN / tex can take place. It may be necessary to pretension the yarns in order to achieve a correct, comparable measurement result.
  • Standards for measuring the length of yarns are known in the prior art, such as DIN 53830-3, which among other things specifies a pretension of 0.5 +/- 0.1 cN/tex for measuring the length of yarns, and can also be used to determine the lengths of the yarns of the rope 1 described herein.
  • the first yarn 7 comprises high-tenacity fibers and the second yarn 8 non-high-tenacity fibers, the definition of high-tenacity being as given above with regard to the rope core 2 .
  • the high tenacity fibers of the first yarn 7 could be p-aramid fibers (para-aramid fibers), m-aramid fibers (meta-aramid fibers), LCP fibers, UHMWPE fibers, or PBO fibers. Fibers marketed under the names Kevlar, Twaron and Technora are particularly suitable.
  • PA fibers, PES fibers or PP fibers could be selected for the non-high-strength fibers of the second yarn 8 .
  • yarns 7, 8 made of different materials can thus be selected for the twisted thread 6 with excess length ⁇ .
  • yarns made of the same materials can also be selected, with limitations resulting from the production processes described below.
  • the ratio of the first yarn 7 to the second yarn 8 is chosen such that the proportion by weight of the first yarn 7 with excess length ⁇ in the thread is 30% to 90%, preferably 40% to 75%.
  • the construction of the thread 6 is not limited to the twisting of only two yarns, but more than two yarns could also be twisted together. In the untwisted state of the twisted thread 6 with excess length ⁇ , all the yarns could then have a different length. In other embodiment variants, only one yarn could be longer than the other yarns of the same length, or only one yarn could be shorter than the other yarns of the same length. Again, for example, two yarns of the same length could be longer than two other yarns of the same length. It can be seen that there are no limits to the structure of the twisted yarn 6 with excess length ⁇ , as long as at least one yarn has a greater length than another yarn, measured in an untwisted state of a unit length E of the twisted yarn 6. In these embodiments, it is particularly preferred if the longest yarn is at least 5%, preferably at least 8%, particularly preferably at least 12% longer than the shortest yarn, measured in the untwisted state of the unit length E of the thread 6.
  • the twisted yarn 6 with excess length ⁇ can be produced in a wide variety of ways and is not restricted to a specific production method. In particular, however, production methods by means of a shrinking process or under different tension are available, which are described below.
  • first the first yarn 7 and the second yarn 8 are provided.
  • the two yarns 7, 8 are usually without tension or have the same tension.
  • the yarns 7, 8 are twisted together, resulting in a twist without excess length ⁇ .
  • the twine without excess length ⁇ is exposed to a predetermined temperature in an autoclave after suitable preparation, e.g. knitting, so that the first yarn 7 and the second yarn 8 shrink.
  • the yarns 7, 8, in particular their materials, were selected in such a way that they shrink to different extents under the predetermined conditions, resulting in the twisted yarn 6 with excess length ⁇ .
  • the first yarn 7 and the second yarn 8 are twisted together with different tension, and the twisted yarn 6, i.e., its yarns 7, 8, is relaxed after twisting.
  • the selection of the tensions in order to achieve a desired excess length ⁇ of the first yarn 7 compared to the second yarn 8 can be determined by the person skilled in the art on the basis of the modulus of elasticity of the two yarns 7, 8. It can be seen that, for example, a thread in which PA 940 dtex is twisted with aramid 1660 dtex requires a different pretension to achieve thread 6 with excess length ⁇ than a thread in which PA1400 dtex is twisted with aramid 1660 dtex.
  • a height-adjustable test carrier was provided, on which an 80 cm long granite block 9 with a naturally broken edge 10 (granite curb) was fastened.
  • a test mass 80 kg steel cylinder
  • the rope is deflected at the edge 10 in a deflection angle ⁇ , as shown in FIG figure 4 is evident.
  • Edge 10 is located at a distance of 4 m from the anchor point (belay).
  • the proof mass is freely suspended. The forces occurring at the attachment point were recorded by installing a load cell.
  • the force of the sideways pull is introduced directly below the edge 10 . Stop bolts at each end of the edge 10 prevent the cable from moving beyond the edge 10. At the end of the tests, the sharpness of the edge 10 is verified by a rope model that has already been tested. The edge 10 remained unchanged.
  • the first test rope was a prior art rope designed to EN892 with a diameter of 9.8mm. This was a core-sheath rope with a polyamide sheath. The deflection angle was 45°. A fracture length of approx. 200 cm could be achieved.
  • the second test rope was a rope according to the invention with aramid in the intermediate sheath in the construction according to the invention, designed according to EN892 with a diameter of 9.8 mm.
  • a fracture length of approx. 340 cm could be achieved.
  • the breaking length could thus be increased by 70% compared to the rope according to the prior art.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ropes Or Cables (AREA)
EP20195558.0A 2020-09-10 2020-09-10 Corde textile comprenant un fil retors et procede de fabrication d'un fil retors Pending EP3967799A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20195558.0A EP3967799A1 (fr) 2020-09-10 2020-09-10 Corde textile comprenant un fil retors et procede de fabrication d'un fil retors
US17/468,959 US11802372B2 (en) 2020-09-10 2021-09-08 Rope made of textile fiber material, comprising a twine of excess length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20195558.0A EP3967799A1 (fr) 2020-09-10 2020-09-10 Corde textile comprenant un fil retors et procede de fabrication d'un fil retors

Publications (1)

Publication Number Publication Date
EP3967799A1 true EP3967799A1 (fr) 2022-03-16

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Country Status (2)

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US (1) US11802372B2 (fr)
EP (1) EP3967799A1 (fr)

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JPS53134953A (en) * 1977-04-22 1978-11-25 Uotsu Seikoushiyo Kk Rope
US4375779A (en) * 1981-04-24 1983-03-08 Minnesota Mining And Manufacturing Company Composite sewing thread of ceramic fibers
EP0150702A2 (fr) 1984-02-01 1985-08-07 Teufelberger Gesellschaft m.b.H. Cordage de fils, filés ou retors issus de matière textile fibreuse
DE4035814A1 (de) * 1990-11-10 1992-05-14 Techtex Bremen Gmbh Seil, insbesondere reckarmes faserseil
JPH07243138A (ja) * 1994-03-04 1995-09-19 Toyobo Co Ltd 織編物用潜在嵩高性ポリエステル複合糸条
JPH0866922A (ja) * 1994-08-30 1996-03-12 Nippon Steel Chem Co Ltd 繊維強化プラスチック製棒材及びその製造方法
US6050077A (en) 1997-07-17 2000-04-18 Mueller; Kurt Safety mountaineering rope
JP3185821B2 (ja) * 1992-12-28 2001-07-11 東洋紡績株式会社 複合ロープ
FR2951743A1 (fr) 2009-10-22 2011-04-29 Beal Sa Protege corde de securite
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US20130042593A1 (en) * 2007-10-24 2013-02-21 Pirelli Tyre S.P.A. Tire having a structural element reinforced with a hybrid yarn

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Publication number Priority date Publication date Assignee Title
GB1012828A (en) * 1963-08-05 1965-12-08 Du Pont Process for producing elastic fabrics
JPS53134953A (en) * 1977-04-22 1978-11-25 Uotsu Seikoushiyo Kk Rope
US4375779A (en) * 1981-04-24 1983-03-08 Minnesota Mining And Manufacturing Company Composite sewing thread of ceramic fibers
EP0150702A2 (fr) 1984-02-01 1985-08-07 Teufelberger Gesellschaft m.b.H. Cordage de fils, filés ou retors issus de matière textile fibreuse
DE4035814A1 (de) * 1990-11-10 1992-05-14 Techtex Bremen Gmbh Seil, insbesondere reckarmes faserseil
JP3185821B2 (ja) * 1992-12-28 2001-07-11 東洋紡績株式会社 複合ロープ
JPH07243138A (ja) * 1994-03-04 1995-09-19 Toyobo Co Ltd 織編物用潜在嵩高性ポリエステル複合糸条
JPH0866922A (ja) * 1994-08-30 1996-03-12 Nippon Steel Chem Co Ltd 繊維強化プラスチック製棒材及びその製造方法
US6050077A (en) 1997-07-17 2000-04-18 Mueller; Kurt Safety mountaineering rope
US20130042593A1 (en) * 2007-10-24 2013-02-21 Pirelli Tyre S.P.A. Tire having a structural element reinforced with a hybrid yarn
FR2951743A1 (fr) 2009-10-22 2011-04-29 Beal Sa Protege corde de securite
DE102011017273A1 (de) * 2011-04-15 2012-10-18 Edelrid Gmbh & Co. Kg Kletterseil

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US11802372B2 (en) 2023-10-31
US20220074136A1 (en) 2022-03-10

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