WO1994003950A1 - Section de ruban - Google Patents

Section de ruban Download PDF

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Publication number
WO1994003950A1
WO1994003950A1 PCT/CH1993/000196 CH9300196W WO9403950A1 WO 1994003950 A1 WO1994003950 A1 WO 1994003950A1 CH 9300196 W CH9300196 W CH 9300196W WO 9403950 A1 WO9403950 A1 WO 9403950A1
Authority
WO
WIPO (PCT)
Prior art keywords
tape
adhesive
shrink film
self
section according
Prior art date
Application number
PCT/CH1993/000196
Other languages
German (de)
English (en)
Inventor
Kurt Stephan
Jürgen Merkel
Original Assignee
Huber & Suhner Ag Kabel-, Kautschuk-, Kunststoffwerke
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 Huber & Suhner Ag Kabel-, Kautschuk-, Kunststoffwerke filed Critical Huber & Suhner Ag Kabel-, Kautschuk-, Kunststoffwerke
Priority to AU45565/93A priority Critical patent/AU4556593A/en
Publication of WO1994003950A1 publication Critical patent/WO1994003950A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • H02G15/1806—Heat shrinkable sleeves
    • H02G15/1813—Wraparound or slotted sleeves
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/35—Heat-activated

Definitions

  • the present invention relates to a tape section for repairing damaged insulation on electrical conductors, to a method for its production and to a method for repairing damaged insulation of overhead lines.
  • Another task was to develop a simple method for producing such agents.
  • FIG. 1 shows a top view of the coated side of a strip section
  • Figure 2 shows a section of a line during repair
  • Figure 3 shows a wire in cross section during the repair.
  • the tape section 1 consists of a known electrically insulating shrink film 2, which is provided on two opposite edge surfaces with a self-adhesive 3a, 3b, while the free surface between the Self-adhesive coated edges is coated with a hot glue 4 of a known type.
  • Suitable materials for the production of the shrink films are all temperature and weather-resistant thermoplastic materials which can usually be used for electrical insulation and which can be changed by crosslinking, cold stretching and / or warm stretching in such a way that they heat up shrink, ie that they have a so-called memory.
  • Plastics of this type are known to the person skilled in the art and are based, for example, on on polyethylene, polyethylene copolymers, polyacrylates, EPM, EPDM, PVC, polyamides and PETP, etc. Good results have been e.g. obtained with mixtures of different ethyl acrylate copolymers.
  • a shrink film is generally preferred which has a shrinkability of 20 _ + 5 ' .
  • the mixtures used to produce the films can contain known additives, such as adhesion promoters, crosslinking accelerators, color pigments, anti-aging agents, anti-fungal agents and other preservatives and auxiliaries.
  • hot glue which is compatible both with the shrink film and with the conductor material and at the temperature used for shrinking up to 250 ° C. is activated.
  • Commercially available adhesive products such as "Macroplast”, “Technomelt”, “Eurolon”, “Euromelt” and other hotmelt systems based on synthetic polyamide, ethylene acrylate, polyurethane or polyester adhesives have proven successful.
  • the commercially available self-adhesive tapes are suitable, which resist the temperatures used during shrinking, e.g. various "Scotch” tapes, "Sealgrip” and others.
  • the strip section according to the invention is produced by the method defined in claim 6.
  • the methods known and proven in specialist circles can be used to produce the basic shrink film composition, the so-called compound.
  • Particularly good results are obtained if the base polymer (s) are heated and mixed in an extruder screw, certain auxiliary substances, such as a heteropolar adhesion promoter, being incorporated and possibly further auxiliary substances being subsequently added to the mixture in the melt, the melt then being cooled and added a storable granulate is processed. This granulate is then melted again in the extruder for the production of the films and through a wide slot extruded nozzle to a sheet of desired thickness and this thermoplastic and / or thermoelastic stretched in a known manner or pre-oriented.
  • the previous or subsequent crosslinking can be carried out in various known ways, for example by the action of chemical crosslinking agents or by radiation, for example electron or gamma rays.
  • the amount of radiation required depends on the desired heat resistance, the material and the stretching. Overall, it is preferred to achieve a shrinkage of 5 to 45 ' , in particular 20 ' _ + 5 ', when reheating.
  • the film strip obtained in this way is wound on a reel and then coated in sections in a conventional coating machine with the hot glue in the required thickness. After passing through a cooling tunnel, the sections left empty by the hot glue are covered with the self-adhesive tape covered with a removable cover sheet, and the finished tape is cut into tape sections of the desired shape and size, care being taken to ensure that each section is taped at two opposite edges is seen.
  • an elongated, rectangular section shape with a narrower adhesive strip on one edge and an approximately four to five times wider adhesive Strip tape on the opposite edge is considered appropriate, the edge length depending on the length of the defective area to be covered and the circumference of the conductor.
  • the section is advantageously dimensioned such that it can wrap around the conductor circumference about one and a half times. Depending on the field of application, the shape and dimensions of the section can be adapted to the requirements.
  • the film tape On the side that is not coated with adhesive, the film tape can also be printed as desired, be it with a brand logo, instructions for use, a temperature indicator or the like.
  • the fitter can somewhat separate the wires 5a of a line 5 one after the other from the other wires with one or more wedges 6 and effortlessly wind around the defective point 7 of the insulation with the tape section 1.
  • the section is then flush with the wire and fastened with the self-adhesive, wider edge 3b freed from the cover sheet.
  • the firmly placed but still loose bandage can now be heated with a blowtorch until the desired shrinkage is achieved.
  • Lucalen A 2910M (BASF) 25 - 50 Fuzabond HB 226 (DuPont) 5
  • the above mixtures were fed in the above sequence in an extruder screw, processed to a uniform melt at a temperature of 140 to 190 ° C. and then extruded to give a granulate of 2 to 4 mm core size, which was packed into bags.
  • the above granulate was again heated to a temperature of 170 to 190 ° C. in an extruder and the melt was extruded through a slot die to form a film 120 mm wide and 1.8 mm thick.
  • This film was fed into a stretching device and stretched to half the width.
  • the subsequent crosslinking under the influence of the radiation from a cobalt source in a dose of 200 kG results in a film which shrinks by 25 ' at 200 ° C. and has the following properties:
  • the film strip was then wound up on a reel and fed to a coating machine, in which it was partially coated on one side in a length of 70 cm with 0.3 kg / m 2 of hot melt TPX 20-037 (Henkel), each with a space of 30 mm remained uncoated.
  • the uncoated spaces were provided with a 30 mm wide Scotch (3M) self-adhesive tape, item 950, which was covered on the top with a silicone cover sheet.
  • the web was cut into sections of 100 mm in length such that the self-adhesive tape had a width on one edge of the section 5 mm, had a width of 25 mm on the other edge.
  • the ready-to-use sections obtained in this way can be packed into any desired packs.
  • the fitter can spread the wire to be repaired by two wedges from the other wires by a few centimeters, standing on a ladder without effort and great force, as can be seen from FIG. 2. He now attaches a section with the narrower self-adhesive tape edge to the defective wire, puts the tape around the wire, glues the other end to the wide self-adhesive edge and then heats the resulting bandage with a blowtorch until the hot glue begins to swell. Due to the shrinkage, the bandage is now firmly and immovably tight and the insulation meets all requirements.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Insulating Bodies (AREA)
  • Adhesive Tapes (AREA)

Abstract

La section de ruban nécessaire à la réparation d'isolations endommagées sur des conducteurs électriques est constituée par un morceau de film rétractable muni unilatéralement, à deux extrémités opposées, d'un ruban adhésif et, entre ces bords, d'une thermocolle. La présente invention divulgue le procédé appliqué à la fabrication de ce produit. Ce ruban convient en particulier à la réparation de conduites dont les différents conducteurs ne peuvent être isolés au moyen d'un ruban isolant conventionnel.
PCT/CH1993/000196 1992-08-06 1993-08-05 Section de ruban WO1994003950A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU45565/93A AU4556593A (en) 1992-08-06 1993-08-05 Strip of tape

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4226046.9 1992-08-06
DE4226046A DE4226046A1 (de) 1992-08-06 1992-08-06 Bandabschnitt

Publications (1)

Publication Number Publication Date
WO1994003950A1 true WO1994003950A1 (fr) 1994-02-17

Family

ID=6465000

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1993/000196 WO1994003950A1 (fr) 1992-08-06 1993-08-05 Section de ruban

Country Status (3)

Country Link
AU (1) AU4556593A (fr)
DE (1) DE4226046A1 (fr)
WO (1) WO1994003950A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102354589A (zh) * 2011-10-31 2012-02-15 大连联合高分子材料有限公司 一种热缩电线、电缆外绝缘破损快速修补片

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012210455A1 (de) 2012-06-21 2013-12-24 Robert Bosch Gmbh Verfahren zum Reparieren einer Zelle mit einem metallischen Gehäuse, die eine Beschädigung an einer elektrischen Isolationsschicht aufweist

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100170A1 (fr) * 1982-07-23 1984-02-08 Shaw Industries Ltd. Enveloppe de thermorétrécissement et méthode pour la fixer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100170A1 (fr) * 1982-07-23 1984-02-08 Shaw Industries Ltd. Enveloppe de thermorétrécissement et méthode pour la fixer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102354589A (zh) * 2011-10-31 2012-02-15 大连联合高分子材料有限公司 一种热缩电线、电缆外绝缘破损快速修补片
CN102354589B (zh) * 2011-10-31 2013-09-04 大连联合高分子材料有限公司 一种热缩电线、电缆外绝缘破损快速修补片

Also Published As

Publication number Publication date
AU4556593A (en) 1994-03-03
DE4226046A1 (de) 1994-02-10

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