EP0311199B1 - Seil - Google Patents

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Publication number
EP0311199B1
EP0311199B1 EP88202160A EP88202160A EP0311199B1 EP 0311199 B1 EP0311199 B1 EP 0311199B1 EP 88202160 A EP88202160 A EP 88202160A EP 88202160 A EP88202160 A EP 88202160A EP 0311199 B1 EP0311199 B1 EP 0311199B1
Authority
EP
European Patent Office
Prior art keywords
cordage
yarns
fibers
filaments
heat treatment
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.)
Expired - Lifetime
Application number
EP88202160A
Other languages
English (en)
French (fr)
Other versions
EP0311199A1 (de
Inventor
Engelbertus Henricus Maria Van Gorp
Eric Henricus Maria Hogenboom
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.)
Koninklijke DSM NV
Original Assignee
DSM NV
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 DSM NV filed Critical DSM NV
Priority to AT88202160T priority Critical patent/ATE82338T1/de
Publication of EP0311199A1 publication Critical patent/EP0311199A1/de
Application granted granted Critical
Publication of EP0311199B1 publication Critical patent/EP0311199B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • 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
    • D07B1/18—Grommets
    • D07B1/185—Grommets characterised by the eye construction
    • 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
    • D07B7/169—Auxiliary apparatus for interconnecting two cable or rope ends, e.g. by splicing or sewing
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B9/00—Binding or sealing ends, e.g. to prevent unravelling
    • 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
    • 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
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/404—Heat treating devices; Corresponding methods
    • D07B2207/4054—Heat treating devices; Corresponding methods to soften the load bearing material
    • 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
    • D07B7/167—Auxiliary apparatus for joining rope components

Definitions

  • the present invention relates to a cordage produced predominantly or exclusively from meltable polymer filaments, fibres and/or yarns, which has been subjected to a heat treatment in those areas at its ends where, in use, stresses occur in a direction other than the longitudinal direction.
  • cordage Such a cordage is known from FR-A-1.443.391.
  • Cordages produced predominantly or exclusively from meltable polymer filaments, fibres and/or yarns have high tensile strengths and moduli in its longitudinal direction, while these properties decrease in directions other than the longitudinal direction and are at their minimum in the direction perpendicular to the longitudinal direction. This decrease in strengths and moduli is adversely apparent for example when, for fastening purposes, cordage is provided at one end with an eye by knotting, splicing or thimbling or, for joining to other cordage, is joined with the aid of the same measures.
  • FR-A-1.443.391 mentions the possibilty to increase the strength of the cordage perpendicular to the longitudinal direction by melting and welding together the polymer filaments in the cordage. However the longitudinal strength of the rope is lost.
  • DE-A-1.902.850 a cordage is described containing filaments having different melting points. The low melting filaments act as a lubricant above their melting point and loose their properties upon melting. No increase in the strength or modulus of cordage perpendicular to the longitudinal direction.
  • These areas at the ends are in particular those areas where, to form eyes or to join together with other cordage, cordage parts are brought into contact, in particular by knotting, splicing or thimbling or similar measures which have the effect that tensile stresses exerted on the cordage in the longitudinal direction result in those areas in stresses which no longer act in the longitudinal direction of the cordage but in the least favorable case act in a direction perpendicular to the longitudinal direction, as a consequence of which the cordage can no longer be loaded with the maximum tensile stress possible in the longitudinal direction.
  • the heat treatment is carried out by partially melting, in particular at the surface, of the polymer constituents of which the cordage is made without significant loss in molecular orientation, thereby enhancing the tensile strength and modulus values.
  • partial melting as used herein is to be understood as meaning that the polymer filaments, fibers and/or yarns which predominantly or exclusively form the cordage become converted at the surface into a softened or melted state without at the same time incurring a significant loss in molecular orientation.
  • the heat treatment can be carried out by heating the cordage in the areas where cordage parts come into contact in the course of knotting, splicing or thimbling to a temperature above the melting point of polymers of which the cordage is made, with or without pressure being employed, prior to the step of knotting, splicing or thimbling.
  • the heating can also be carried out after knotting, splicing or thimbling has been carried out and advantageously should be carried out only for such a length of time, and to such an extent, as to maintain a good balance between strength enhancement and adequate flexibility of cordage.
  • thimbling which can be done for example using metal rings or resin sheaths
  • a possible procedure comprises heating the metal rings or the resin before the step of thimbling to a temperature above the melting point of the polymer constituents of the cordage, so that in the course of and after the application of the thimble, the metal rings or the resin transfer their heat to the polymer constituents to effect partial melting of the latter.
  • the cordage according to the invention can be produced in any desired conventional manner from polymer filaments, fibers and/or yarns or from mixtures of such polymer components with natural fibers such as hemp, manilla, sisal, coconut or cotton, including, if desired, metal wires.
  • polymer components suitable for partial melting are present at the surface of the cordage.
  • the polymer filaments, fibers and yarns used for producing the cordage according to the invention can consist of any desired polymer material suitable for cordage production, although particular preference is given to polyolefins and polyamides of, in particular, high molecular weight, particularly preferably of ultra-high molecular weight of more than 600,000 g/mol (weight average of molecular weight).
  • these filaments and fibers have preferably been highly drawn, in particular to draw ratios of more than 20, in particular more than 30.
  • Suitable filaments and fibers are made in particular of polyethylene, in particular linear polyethylenes of ultrahigh molecular weight. These polyethylenes may contain minor amounts, preferably not more than 5 mol % of one or more other alkenes copolymerizable therewith, such as propylene, butylene, pentene, hexene, 4-methylpentene, octene etc. and have 1 to 10, in particular 2 to 6, methyl or ethyl groups per 1,000 carbon atoms. It is of course also possible to use other polyolefins, for example polypropylene homopolymers and copolymers; furthermore, the polyolefins used may also contain minor amounts of one or more other polymers, in particular alkene-1 polymers.
  • polyamides preference is given in particular to the polyaramids and the nylons, such as nylon-6 and nylon-6.6.
  • the filaments or fibers are preferably produced by the gel process, which is described for example in GB-A-2,042,414 and -2,051,667 and also in DE Offenlegungsschrift 3,733,434, and comprises essentially dissolving the particular polymer used for filament production in a solvent, molding the solution into a filament at a temperature above the dissolving temperature of the polymer, cooling the filament, for gelling, down to a temperature below the dissolving temperature, and drawing the filament with solvent removal.
  • the gel process which is described for example in GB-A-2,042,414 and -2,051,667 and also in DE Offenlegungsschrift 3,733,434, and comprises essentially dissolving the particular polymer used for filament production in a solvent, molding the solution into a filament at a temperature above the dissolving temperature of the polymer, cooling the filament, for gelling, down to a temperature below the dissolving temperature, and drawing the filament with solvent removal.
  • one or more polymers which have lower melting points than the polymer filaments, fibers and/or yarns which predominantly or exclusively form the cordage, in particular in the areas subject to a stress on the cordage, in which case the heat treatment is carried out at a temperature which is above the melting point of the low-melting polymers and below the melting point of polymer filaments, fibers and/or yarns.
  • low-melting polymers which preferably have melting points of less than 135°C can be present in the form of filaments, fibers and/or yarns and be incorporated in the cordage from the start of the production of the cordage or, however, be introduced into the cordage, preferably in the stressed areas, for example by splicing, only before the heat treatment. It is also possible to introduce these polymers into the cordage by dipping the stressed areas of the cordage into a melt of the low-melting polymers.
  • the low-melting polymers used are polyolefins, in particular polyethylenes, in particular (L)LDPE.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ropes Or Cables (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Insulated Conductors (AREA)
  • Artificial Filaments (AREA)

Claims (6)

  1. Tauwerk, das überwiegend oder ausschließlich aus schmelzbaren Polymerfilamenten, -fasern und/oder -garnen hergestellt worden ist, das an solchen Stellen in seinen Endbereichen einer Wärmebehandlung unterzogen worden ist, an denen bei der Verwendung Beanspruchungen in einer anderen Richtug als der Längsrichtung auftreten, dadurch gekennzeichnet, daß die Wärmebehandlung ein teilweises Schmelzen der Polymerbestandteile ohne wesentlichen Verlust der Molekülorientierung herbeigeführt hat.
  2. Tauwerk nach Anspruch 1, dadurch gekennzeichnet, daß die Wärmebehandlung an solchen Stellen durchgeführt worden ist, an denen zur Bildung von Augen oder zum Verbinden von verschiedenem Tauwerk, Tauwerksteile in Kontakt gebracht werden.
  3. Tauwerk nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Kontaktstellen aus Verknotungen, Verspleißungen oder Verkauschungen bestehen.
  4. Tauwerk nach irgendeinem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die schmelzbaren Filamenten, Fasern oder Garne aus Polyolefinen oder Polyamiden bestehen.
  5. Tauwerk nach irgendeinem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Filamente, Fasern oder Garne aus Polyethylen, insbesondere linearen Polyethylen, mit einem ultrahohen Molekulargewicht von mehr als 600.000 g/Mol (Gewichtsmittel des Molekulargewichtes) bestehen.
  6. Tauwerk nach irgendeinem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß insbesondere an den beanspruchten Stellen eines oder mehrere Polymere vorliegen, das bzw. die niedriger schmilzt bzw. schmelzen als die das Tauwerk bildenden Polymerfilamente, -fasern und/oder -garne, wobei die Wärmebehandlung bei einer Temperatur durchgeführt worden ist, die oberhalb des Schmelzpunktes der niedrigschmelzenden Polymeren und unterhalb des Schmelzpunktes der das Tauwerk bildenden Polymerfilamente, -fasern und/oder -garne liegt.
EP88202160A 1987-10-02 1988-09-30 Seil Expired - Lifetime EP0311199B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88202160T ATE82338T1 (de) 1987-10-02 1988-09-30 Seil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3733434 1987-10-02
DE3733434 1987-10-02

Publications (2)

Publication Number Publication Date
EP0311199A1 EP0311199A1 (de) 1989-04-12
EP0311199B1 true EP0311199B1 (de) 1992-11-11

Family

ID=6337529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202160A Expired - Lifetime EP0311199B1 (de) 1987-10-02 1988-09-30 Seil

Country Status (10)

Country Link
EP (1) EP0311199B1 (de)
JP (1) JPH01156584A (de)
KR (1) KR910000513B1 (de)
CN (1) CN1035693A (de)
AT (1) ATE82338T1 (de)
AU (1) AU2336688A (de)
BR (1) BR8805051A (de)
CA (1) CA1307922C (de)
DE (1) DE3875902T2 (de)
ZA (1) ZA887384B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643273B1 (fr) * 1989-02-17 1991-05-03 Beal Ets Corde d'assurance pour escalade et son procede de fabrication
US5010723A (en) * 1989-10-26 1991-04-30 Wilen Manufacturing Twisted yarn which will maintain its twist and products produced therefrom
KR100850745B1 (ko) * 2008-04-30 2008-08-06 주식회사 케이.씨 리버텍 복합 망체로프형 코이어롤
GB201007447D0 (en) 2010-05-05 2010-06-16 Parker Hannifin Ltd Forming an eye end termination on a rope
GB201107443D0 (en) * 2011-05-05 2011-06-15 Parker Hannifin Ltd Forming an eye end termination on a rope
CN103331857B (zh) * 2013-06-09 2015-12-02 江苏高博智融科技有限公司 一种纤维绳索端部成型方法
WO2020016461A1 (en) 2018-09-03 2020-01-23 Dsm Ip Assets B.V. Roundsling

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB552225A (en) * 1941-08-13 1943-03-29 Edgar Chase Improvements in or relating to cord and like structures
FR1443391A (fr) * 1965-05-14 1966-06-24 Cousin Freres Sa Perfectionnements apportés à la fabrication de câbles
GB1202923A (en) * 1967-06-21 1970-08-19 Union Lighterage Company Ltd Improvements in or relating to methods and apparatus for finishing rope ends and ropes having ends so finished
GB1257643A (de) * 1968-01-23 1971-12-22
NL7908515A (nl) * 1979-11-22 1981-06-16 Anza Bv Werkwijze voor het maken van een gevlochten koord, getwijnd garen of geslagen touw, respectievelijk voor het maken van een netwerk uit genoemde materialen, in het bijzonder een netwerk bestemd voor de visserij.
US4456451A (en) * 1982-09-29 1984-06-26 Vosper George W Apparatus for shaping rope ends

Also Published As

Publication number Publication date
KR910000513B1 (ko) 1991-01-26
DE3875902D1 (de) 1992-12-17
BR8805051A (pt) 1989-05-09
CN1035693A (zh) 1989-09-20
ATE82338T1 (de) 1992-11-15
ZA887384B (en) 1989-06-28
AU2336688A (en) 1989-04-06
DE3875902T2 (de) 1993-06-03
CA1307922C (en) 1992-09-29
EP0311199A1 (de) 1989-04-12
KR890006916A (ko) 1989-06-16
JPH01156584A (ja) 1989-06-20

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