Classifications

• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
  • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
  • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
  • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
  • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2401/00—Physical properties
  • D10B2401/06—Load-responsive characteristics
  • D10B2401/061—Load-responsive characteristics elastic
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2401/00—Physical properties
  • D10B2401/16—Physical properties antistatic; conductive
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2507/00—Sport; Military
  • D10B2507/04—Sails

Definitions

• the present invention relates to a new fabric and its applications.
• Fabrics are used in a great number of fields.
• fabrics are used for instance as sheathing material for mutual insulation of cable components such as the conductive core and the polyethylene (PE) layer lying therearound.
• the PE layer is melted round the conductive core.
• a conventional and very dense fabric is used as insulating tape which excludes the melted extrudate.
• Known fabrics of this type generally have a high weft density and consist of a comparatively thin yarn. Standard values are for instance a weft density of 25-40 wefts/cm at a titre of 50-100 dtex.
• the drawback of the known fabrics are the relatively high production costs.
• the present invention has for its object to provide a fabric which is improved in relation to the known fabric.
• This is achieved by the invention with a fabric whereof the warp or the weft consists at least partly of partially oriented yarn (POY) .
• POY partially oriented yarn
• This type of yarn is per se known and has a very high stretch and a strongly amorphous character. A part of the polymer molecules already lie in the same direction, while the rest is still amorphous, hence the name "partially oriented”.
• By heating and simultaneously exposing the yarn to pressure, for instance by calendering the yarn melts whereby the fabric becomes dense.
• the material moreover transposes from an amorphous to a (partially) crystalline state.
• the stretch hereby decreases but the material acquires a higher melting point.
• the melting point of partially oriented polyethylene terephthalate polyester is for instance roughly 130°C. After calendering at 180°C and pressure of 40 tons the melting point reaches that of normal PETP, i.e. 250°C.
• PETP normal PETP
• other POYs can also be used in addition to PETP.
• the applied temperatures and pressures depend of course on the POY being used.
• use can be made, as compared with the known fabric, of thicker yarn of for instance 200-300 dtex and a lower weft density of for instance 15-20 wefts/cm. The advantage hereof is a higher production speed and resulting lower production costs.
• the fabric will be completely closed or almost completely closed.
• the skilled person in this field will be able to adapt the weft density to the desired application.
• Almost completely closed fabrics are particularly suitable for foil-like materials with a high stability.
• a completely closed fabric is very advantageous for instance in use as sailcloth.
• a completely closed fabric is also often a prerequisite in the case of use as con- ductor separation tape with water-blocking properties in cables.
• a layer or pattern of super-absorbent material can be applied to the fabric, for instance as described in the non-prepublished Nether- lands patent application number 1.000.572. Because the moisture possibly penetrating through the fabric is immediately absorbed when a super-absorbent material is used, an almost completely closed fabric can also be used in this combination.
• a conducting material can be arranged on or in the fabric. Particularly for applications in electrical and data communication cables such a conducting fabric is very advantageous.
• Known fabrics are used in this application as sheathing material to prevent melted PE penetrating into the conductor during extruding of PE round the conductor.
• concentrations in the electric field around the conductor must preferably be discharged quick ⁇ ly to prevent disturbances.
• a non-conducting material would serve no function in dispersing such concentra- tions.
• the fabric according to the invention if made conductive, can however do this.
• Making the fabric conductive can be performed in different ways.
• a conducting thread can thus be co-woven.
• the fabric can after manufacture also be coated or im ⁇ pregnated with a conducting material such as soot.
• the conducting fabrics according to the invention can also be combined with a layer or pattern of super ⁇ absorbent material.
• the invention therefore provides fabrics with dif ⁇ fering combinations of properties.
• Fabrics can be com ⁇ pletely or almost completely closed, conductive or non ⁇ conductive and may or may not be provided with a super ⁇ absorbent material.
• the fabric consists of warp threads of for instance polyester with a density of 20-40 threads/cm and a titre of 33-150 dtex and weft threads of partially oriented polyethylene terephthalate polyester (PETP) with a titre of 200-300 dtex in a quantity of 15-20 wefts/cm, wherein the final fabric is obtained by calendering at a temperature of 180°C and pressure of 40 tons.
• the thick ⁇ ness of the fabric after calendering amounts to approxi ⁇ mately 0.1 mm.
• the invention further relates to a method for manu ⁇ facturing a fabric according to the invention, comprising of weaving a suitable warp yarn with a weft yarn of a partially oriented polymer material to obtain a fabric and subsequently exposing the fabric to increased temper- ature and pressure to make said fabric dense, and option ⁇ ally making the fabric conductive.
• the fabric can be made conductive by co-weaving a conducting thread during weaving and/or by coating or impregnating the fabric with a conducting material such as soot after the pressure and temperature treatment.
• the invention provides a thin and strong fabric which can optionally be made conductive and/or moisture absorbent and which is particularly suitable for use as sailcloth, as sheathing material in cables and the like.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Woven Fabrics (AREA)
• Materials For Medical Uses (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19761179

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (3)

Citations (8)

• 1995
  • 1995-06-19 NL NL1000591A patent/NL1000591C2/xx not_active IP Right Cessation
• 1996
  • 1996-06-19 KR KR1019970709475A patent/KR19990023005A/ko not_active Application Discontinuation
  • 1996-06-19 WO PCT/NL1996/000250 patent/WO1997000341A1/en not_active Application Discontinuation
  • 1996-06-19 EP EP96917741A patent/EP0833967A1/en not_active Withdrawn
  • 1996-06-19 AU AU60186/96A patent/AU6018696A/en not_active Abandoned
  • 1996-06-19 JP JP50295297A patent/JP2001507759A/ja active Pending
  • 1996-06-19 CA CA002224252A patent/CA2224252A1/en not_active Abandoned
• 1997
  • 1997-12-17 NO NO975934A patent/NO975934D0/no unknown

Patent Citations (8)

Non-Patent Citations (3)

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