US20080006435A1 - Non-halogenated heavy metal free vehicular cable insulation and harness covering material - Google Patents

Non-halogenated heavy metal free vehicular cable insulation and harness covering material Download PDF

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US20080006435A1
US20080006435A1 US11/483,788 US48378806A US2008006435A1 US 20080006435 A1 US20080006435 A1 US 20080006435A1 US 48378806 A US48378806 A US 48378806A US 2008006435 A1 US2008006435 A1 US 2008006435A1
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United States
Prior art keywords
pass pass
tape
vehicular
polyphenylene ether
heavy metal
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Granted
Application number
US11/483,788
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US7534962B2 (en
US20090014201A9 (en
Inventor
Mark A. Scheel
Edward L. Monroe
Raman V. Chiruvella
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Delphi Technologies Inc
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Delphi Technologies Inc
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Priority claimed from US11/473,648 external-priority patent/US7408116B2/en
Priority to US11/483,788 priority Critical patent/US7534962B2/en
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Assigned to DELPHI TECHNOLOGIES, INC. reassignment DELPHI TECHNOLOGIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHEEL, MARK A., CHIRUVELLA, RAMAN V., MONROE, EDWARD L.
Priority to EP07075531A priority patent/EP1879197A3/en
Priority to CN2007101286152A priority patent/CN101105987B/en
Priority to KR1020070068604A priority patent/KR100896588B1/en
Publication of US20080006435A1 publication Critical patent/US20080006435A1/en
Publication of US20090014201A9 publication Critical patent/US20090014201A9/en
Publication of US7534962B2 publication Critical patent/US7534962B2/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/292Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22Plastics; Metallised plastics
    • C09J7/25Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/42Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
    • H01B3/427Polyethers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/302Applications of adhesives in processes or use of adhesives in the form of films or foils for bundling cables
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2471/00Presence of polyether
    • C09J2471/006Presence of polyether in the substrate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/012Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing wire harnesses
    • H01B13/01263Tying, wrapping, binding, lacing, strapping or sheathing harnesses
    • H01B13/01281Harness wrapping apparatus

Definitions

  • the present invention is concerned with a vehicular cable insulation and harness covering material that is non-halogenated and heavy metal free.
  • the invention pertains to an automotive wire harness insulation and a harness covering material of a non-halogenated composition.
  • PVC polyvinyl chloride
  • PET Polyethylene terephthalate
  • PET based tapes are limited to uses where high performance is needed because of cost and price. Typically, this would be for performance needs such as high temperature, endurance sound deadening or toughness.
  • a harness covering material that is cost effective and still achieves desirable characteristics such as lack of halogens and heavy metals, appropriate temperature resistance, scrape abrasion resistance, resistance to heat aging, resistance to automotive fluids and resistance to flame and in particular to be capable of meeting the standard SAE (Society of automotive Engineers) J2192 or LV312 and offers all these properties with a reduction in weight.
  • SAE Society of automotive Engineers
  • an insulated non-halogenated, heavy metal free vehicular cable comprising an inner core of a copper based metal wire having a thickness area of at least about 0.1 mm, and an outer insulation, covering the length of the inner core, comprised of a thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto, the insulated cable capable of meeting the testing standard ISO 6722.
  • a tape comprised of a layer, having a top and bottom thereto, of a thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto; a contact adhesive adhering to one side of the thermoplastic polyphenylene ether composition and optionally a pealable layer or release liner adhered to the contact adhesive, which pealable layer is capable of being pealed off the tape, thereby permitting the thermoplastic polyphenylene ether composition to be applied to a desired surface.
  • FIG. 1 is a perspective view of the vehicular cable of the present invention
  • FIG. 2 is a cross-section of FIG. 1 taken along lines 2 - 2 ;
  • FIG. 3 is a die used to manufacture an embodiment of the insulated vehicular cable of the present invention.
  • FIG. 4 is a cross-section of FIG. 3 taken along lines 4 - 4 .
  • FIG. 5 is a tape of the present invention.
  • FIG. 6 is the tape of the present invention wrapped around a plurality of vehicular cables of FIG. 1 .
  • non-halogenated is meant that the polymeric material that is utilized has no halogen material that is added to the composition, as a desirable component of the composition.
  • heavy metal free is meant that no heavy metal such as mercury, hexavalent chrome, cadmium, lead and the like are added to the metal core, as a desirable component of the metal composition.
  • copper based metal is meant that the metal wire is comprised of greater than 50% by weight of the metal being copper, or copper alloyed with other metal components as is well known in the industry yet maintaining suitable electrical conductivity.
  • Well known copper based alloys may be used such as HPC-80EF, trademark Phelps Dodge.
  • polyphenylene ether is meant a thermoplastic polymeric material which is commercially available and generally are polymers of monohydroxy aromatic materials. Other readily available materials are 2,6-xylenol or a 2,3,6-trimethylphenyl and polymers thereof.
  • Polyphenylene ether (PPE) is also known as polyphenylene oxide (PPO) and is described in the literature. See U.S. Pat. Nos. 3,306,874, 3,306,875; 3,257,357; and 3,257,358, which are herein incorporated by reference.
  • polyphenylene ether materials are a blend of other thermoplastic or cross-linked ethylenically unsaturated materials such as polyolefinic materials, styrene or styrene butadiene or polyacryamide and the like. These materials are commercially available such as Noryl, Luranyl, Ultranyl or Vestoblend, trademarks of GE. Some materials that may be utilized include Noryl WCV072, WCV072L-111, and the like of GE.
  • the cross sectional area of the copper wire can range from about 0.1 to about 3 square millimeters, such as 26 AWG to 12 AWG, alternatively 0.13 to 1.5 square millimeters.
  • the insulated cable of the present invention is prepared utilizing normal well known commercially available equipment where the desired polyphenylene ether polymer is fed to an extrusion machine where the molten viscous polymer is passed through a die, as shown in FIGS. 3-4 , so that the insulating PPE is wrapped around the linear portion of the metal conductor wire.
  • the processing temperatures that may be utilized can vary as is well known in the industry. However, it has been found desirable to heat the resin material obtained from the supplier as follows.
  • the thermoplastic polyphenylene ether material is dried at about 180° F. for at least 2 hours and is then passed through the first stage of an extrusion machine.
  • the feed temperature is approximately 115° F.
  • the compression temperature and the metering temperature in the barrels of the extruder can vary.
  • a compression temperature may be from about 475° F. to 490° F.
  • the metering temperature is approximately 500° F. to 540° F.
  • the cross head or the die temperature is approximately 540° F. to 560° F.
  • FIG. 1 is the insulated vehicular cable 10 of the present invention having an insulated member 12 of PPE extruded or wrapped around the copper base metal core 14 .
  • An embodiment is shown in FIGS. 1 and 2 wherein the inner copper core is comprised of several wires 14 A-G with a central wire 14 A.
  • the central wire 14 A is surrounded by the other wires 14 B-G.
  • There can be 7 , 19 or 37 strands in metal core 14 in some instances they are compressed and in the other they are bunched.
  • the copper based core is fed through the middle of die 20 entering the back end 22 of the die and exiting from the die at 24 .
  • the die has a central portion 26 through which the copper based wire 14 passes.
  • the hot viscous PPE will be passed into the space 28 at the entrance end 22 of the die 20 and proceeds to envelop the copper wire.
  • the die begins to narrow at 30 as PPE is extruded with the copper based wire passing from 30 through exit 24 of the die.
  • the insulated vehicular cable 10 of the present invention is obtained.
  • the cooling process as described above and the packaging of the cable follows thereafter.
  • the diameter of the insulated vehicular cable 10 of the present invention can vary substantially.
  • a cable diameter that has been found useful is between 0.85 and 0.92 mm in case of 0.13 mm 2 cable.
  • Other dimensions of an insulated vehicular cable would be one that has approximately 0.13 square millimeters of wire as its cross sectional area but which is used to form the embodiment shown in FIG. 1 namely a central wire with six surrounding wires.
  • the conductor diameter may be approximately 0.465 millimeters with a cable diameter 10 of approximately 0.88 millimeters with the minimum insulated wall thickness of 0.198 millimeters.
  • extruding equipment such as an extruder identified as BMD60-24D or a Nokia Maillefer, and the like.
  • the die utilized in the present invention may be manufactured from a wide variety of commercially available materials such as D2 hardened tool steel.
  • Table 5 Listed below in Table 5 is a measurement of the PPE toughness for ISO 6722 needle abrasion cycles to failure compared to material thickness using a 7-N load and 0.45 millimeter needle.
  • PVC tape construction has thicknesses for backings of 0.09-mm and above. This thickness for PVC is required to provide a minimum amount of toughness or abrasion protection while also providing sufficient tensile and tear strength that PVC tape may be applied. Given data from Table 5 and the current film thickness, one can conclude that significantly thinner backings are possible with PPE. PPE backings as thin as 0.03-mm or less could be achieved and still maintain equivalent abrasion protection and toughness to the current PVC backings. Given this potential for reducing backing thickness and specific gravity differences, a weight reduction of 75% seems reasonable with a PPE tape compared to a PVC tape.
  • PPE In addition to being halogen free and tougher than PVC, PPE also offers ability to be used in higher temperature environments. Currently PVC may be rated for use at 105° C. which limits it to select exterior automotive applications. Many of the applications however, such as engine and chassis require temperature ratings of 125° C. and above. This is feasible with PPE which has been rated to 125° C. for continuous use and with excursions to 150° C. and above.
  • PPE backings could be used with any desired pressure sensitive adhesive available today. This would include natural rubber, natural rubber/synthetic rubber blends, synthetic rubber, acrylic, or other adhesive systems.
  • FIG. 5 it is a schematic representation of the tape 50 of the present invention with the PPE material 52 having top 53 and bottom 55 surfaces where an adhesive 54 would be attached to the bottom surface.
  • the adhesive is generally a pressure sensitive adhesive which would facilitate the adhesion of the PPE tape to a desirable substrate.
  • the tape would frequently be made available with a pealable backing 56 .
  • Such adhesives can be natural rubber, synthetic rubber, cross-link acrylics or blends of these polymers.
  • Formulated adhesives may be include Morscic, Acronyl or Duro-Tak that are particular types of acrylic adhesive to be used to coat the bottom portion of the PPE material.
  • the pealable tape can be a variety of materials such as paper, cellulose or any plastic film materials that can be coated with a release layer such as a silicone coating well known in the art.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Insulated Conductors (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
  • Insulating Bodies (AREA)

Abstract

Described is a vehicular harness comprising a plurality of insulated non-halogenated, heavy metal free vehicular cables, each comprising an inner core of a copper based metal wire having a thickness area of at least about 0.1 mm, an outer insulation, covering the length of the inner core, comprised of a thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto, the insulated cable capable of meeting the testing standard ISO 6722, and a tape comprised of the thermoplastic polyphenylene ether composition wrapped around the plurality of cables to hold the cables together. Also described is a tape having a plastic PPE layer with an adhesive on the bottom and a pealable layer.

Description

    TECHNICAL FIELD
  • The present invention is concerned with a vehicular cable insulation and harness covering material that is non-halogenated and heavy metal free. In particular, the invention pertains to an automotive wire harness insulation and a harness covering material of a non-halogenated composition.
  • BACKGROUND OF THE INVENTION
  • Environmental regulations dictate that the material selection in the vehicular industry needs to be halogen free and heavy metal free compositions especially for the vehicular materials. Typically, polyvinyl chloride (PVC) is utilized because of its combination of competitive raw materials costs and desirable properties. These properties include processibility, toughness, chemical resistance and ability to withstand temperatures typical for many applications in automotive environments.
  • Unfortunately, the chlorine content of PVC limits its disposal at the end of the life of the vehicle. Also there are concerns about effects on health and the environment by PVC by-products and PVC plasticizer. Accordingly, therefore, a replacement for PVC has long been sought with an intent to find competitive cost efficient replacements. In addition, performance must be taken into account including high temperature endurance, toughness, processability and also reduction in weight.
  • Polyethylene terephthalate (PET) can also be considered a halogen free material for tape. However, PET based tapes are limited to uses where high performance is needed because of cost and price. Typically, this would be for performance needs such as high temperature, endurance sound deadening or toughness.
  • It is therefore desirable to have a harness covering material that is cost effective and still achieves desirable characteristics such as lack of halogens and heavy metals, appropriate temperature resistance, scrape abrasion resistance, resistance to heat aging, resistance to automotive fluids and resistance to flame and in particular to be capable of meeting the standard SAE (Society of automotive Engineers) J2192 or LV312 and offers all these properties with a reduction in weight.
  • SUMMARY OF THE INVENTION
  • Described is an insulated non-halogenated, heavy metal free vehicular cable comprising an inner core of a copper based metal wire having a thickness area of at least about 0.1 mm, and an outer insulation, covering the length of the inner core, comprised of a thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto, the insulated cable capable of meeting the testing standard ISO 6722.
  • Also described is a tape comprised of a layer, having a top and bottom thereto, of a thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto; a contact adhesive adhering to one side of the thermoplastic polyphenylene ether composition and optionally a pealable layer or release liner adhered to the contact adhesive, which pealable layer is capable of being pealed off the tape, thereby permitting the thermoplastic polyphenylene ether composition to be applied to a desired surface.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • Further objects and advantages of the invention will be apparent from the following description and appended claims, reference being made to the accompanying drawings forming a part of the specification, wherein like reference characters designate corresponding parts in several views.
  • FIG. 1 is a perspective view of the vehicular cable of the present invention;
  • FIG. 2 is a cross-section of FIG. 1 taken along lines 2-2;
  • FIG. 3 is a die used to manufacture an embodiment of the insulated vehicular cable of the present invention; and
  • FIG. 4 is a cross-section of FIG. 3 taken along lines 4-4.
  • FIG. 5 is a tape of the present invention; and
  • FIG. 6 is the tape of the present invention wrapped around a plurality of vehicular cables of FIG. 1.
  • DETAILED DESCRIPTION OF THE INVENTION
  • With increasing electronic content in automobiles there is an ever growing need for miniaturizing the size of the cables that provide resistance to physical abuse and provide resistance to flame and automotive fluids among other requirements to be met for the automotive industry such as ISO 6722. It has been found to be particularly desirable to utilize an insulated non-halogenated, heavy metal free vehicular cable containing a copper based metal wire that has a diameter of at least about 0.1 mm or more and an outer insulation covering the length of the inner core comprised of a thermoplastic polyphenylene ether composition which has no halogen or heavy metal added thereto.
  • Definitions:
  • By “non-halogenated” is meant that the polymeric material that is utilized has no halogen material that is added to the composition, as a desirable component of the composition.
  • By “heavy metal free” is meant that no heavy metal such as mercury, hexavalent chrome, cadmium, lead and the like are added to the metal core, as a desirable component of the metal composition.
  • By “copper based metal” is meant that the metal wire is comprised of greater than 50% by weight of the metal being copper, or copper alloyed with other metal components as is well known in the industry yet maintaining suitable electrical conductivity. Well known copper based alloys may be used such as HPC-80EF, trademark Phelps Dodge.
  • By “polyphenylene ether” is meant a thermoplastic polymeric material which is commercially available and generally are polymers of monohydroxy aromatic materials. Other readily available materials are 2,6-xylenol or a 2,3,6-trimethylphenyl and polymers thereof. Polyphenylene ether (PPE) is also known as polyphenylene oxide (PPO) and is described in the literature. See U.S. Pat. Nos. 3,306,874, 3,306,875; 3,257,357; and 3,257,358, which are herein incorporated by reference.
  • Frequently polyphenylene ether materials are a blend of other thermoplastic or cross-linked ethylenically unsaturated materials such as polyolefinic materials, styrene or styrene butadiene or polyacryamide and the like. These materials are commercially available such as Noryl, Luranyl, Ultranyl or Vestoblend, trademarks of GE. Some materials that may be utilized include Noryl WCV072, WCV072L-111, and the like of GE.
  • It has been found that the ultra thin cable and cable wall that is utilized in the present case even at a small cross section of 0.1 mm2 give a very satisfactory result in abrasion cycling tests such as that called for in ISO-6722.
  • The cross sectional area of the copper wire can range from about 0.1 to about 3 square millimeters, such as 26 AWG to 12 AWG, alternatively 0.13 to 1.5 square millimeters.
  • The insulated cable of the present invention is prepared utilizing normal well known commercially available equipment where the desired polyphenylene ether polymer is fed to an extrusion machine where the molten viscous polymer is passed through a die, as shown in FIGS. 3-4, so that the insulating PPE is wrapped around the linear portion of the metal conductor wire. The processing temperatures that may be utilized can vary as is well known in the industry. However, it has been found desirable to heat the resin material obtained from the supplier as follows. The thermoplastic polyphenylene ether material is dried at about 180° F. for at least 2 hours and is then passed through the first stage of an extrusion machine. The feed temperature is approximately 115° F. The compression temperature and the metering temperature in the barrels of the extruder can vary. A compression temperature may be from about 475° F. to 490° F. The metering temperature is approximately 500° F. to 540° F. The cross head or the die temperature is approximately 540° F. to 560° F. After the wire is extruded with the insulated material thereon, it passes through a cooling water bath and mist which is maintained at room temperature and then is packed as a cable in a barrel for subsequent handling.
  • Turning now to a description of the drawings. FIG. 1 is the insulated vehicular cable 10 of the present invention having an insulated member 12 of PPE extruded or wrapped around the copper base metal core 14. An embodiment is shown in FIGS. 1 and 2 wherein the inner copper core is comprised of several wires 14 A-G with a central wire 14 A. The central wire 14A is surrounded by the other wires 14 B-G. There can be 7, 19 or 37 strands in metal core 14, in some instances they are compressed and in the other they are bunched.
  • During the extrusion process of the insulated vehicular cable 10, the copper based core is fed through the middle of die 20 entering the back end 22 of the die and exiting from the die at 24. The die has a central portion 26 through which the copper based wire 14 passes. The hot viscous PPE will be passed into the space 28 at the entrance end 22 of the die 20 and proceeds to envelop the copper wire. The die begins to narrow at 30 as PPE is extruded with the copper based wire passing from 30 through exit 24 of the die. At the exit 24 of the die, the insulated vehicular cable 10 of the present invention is obtained. The cooling process as described above and the packaging of the cable follows thereafter.
  • The diameter of the insulated vehicular cable 10 of the present invention can vary substantially. A cable diameter that has been found useful is between 0.85 and 0.92 mm in case of 0.13 mm2 cable. Other dimensions of an insulated vehicular cable would be one that has approximately 0.13 square millimeters of wire as its cross sectional area but which is used to form the embodiment shown in FIG. 1 namely a central wire with six surrounding wires. In that case, the conductor diameter may be approximately 0.465 millimeters with a cable diameter 10 of approximately 0.88 millimeters with the minimum insulated wall thickness of 0.198 millimeters.
  • As indicated above a wide variety of commercially available extruding equipment may be utilized such as an extruder identified as BMD60-24D or a Nokia Maillefer, and the like.
  • The die utilized in the present invention may be manufactured from a wide variety of commercially available materials such as D2 hardened tool steel.
  • Following the procedures outlined in ISO-6722, scrape abrasion resistance using 7(N) load and 0.45 millimeter needle was used on three sets of cables, the first being compressed halogen free cable ISO ultra thin wall cable referred as CHFUS, the second ISO thin wall cable referred as HFSS and the third ISO thick wall cable referred as HF. The test results are identified in tables 1 and 2 below.
  • Following the procedures outlined in ISO-6722 a number of tests were so performed where the thickness of the copper wire varied as well as the diameter of insulated polyphyenelyene ether varied as is shown in tables 3-4.
  • TABLE 1
    CHFUS
    0.13* 0.22* 0.35* 0.50* 0.75* 1.00* 1.25*
    Normal Force(N) 4.0 4.0 5.0 5.0 6.0 6.0 6.0
    Minimum cycles 100 100 100 150 150 180 180
    required at the
    normal force
    Result 166 550 338 376 536 526 1315
    7N Load 151 338 244 1150 836 960 2181
    125 379 223 458 1078 1171 610
    174 397 287 560 722 984 2673
    Minimum cycles 125 338 223 376 536 526 610
    attained by the
    cable at
    7 Newton load
    Pass/Fail
    *Wire Size (square mm)
  • TABLE 2
    HFSS
    HF
    0.35* 0.50* 0.75* 1.00* 1.25* 2.00* 3.00*
    Normal Force(N) 5.0 5.0 6.0 6.0 6.0 7.0 7.0
    Minimum cycles required 100 150 150 180 180 750 750
    at the normal force
    Result 443 4067 7193 6043 10434 12586 *>5000
    7N Load 2396 893 9636 3896 5158 10835
    830 4271 4512 7771 3559 11203
    1031 2586 6198 8776 16333 12308
    Minimum cycles 443 893 4512 3896 3559 10835 *>5000
    attained by the
    cable at 7 Newton load
    Pass/Fail
    *Wire Size (square mm)
  • Following the procedures outlined in ISO-6722 a number of tests were so performed where the cross sectional area of the copper wire varied as well as the diameter of insulated polyphyenelyene ether varied as is shown in tables 3-4.
  • TABLE 3
    Cable Type and Size
    CHFUS
    Size
    Test Item Unit Wire Thickness Area (square mm) 0.13 0.22 0.35 0.50 0.75 1.00 1.25 1.50
    ISO6722 Certifi- Dimensions Thickness of (mm) 0.179 0.274 0.190 0.211 0.194 0.196 0.210 0.223
    cation Ins. (min)
    Cable Outer (mm) 0.872 1.027 1.127 1.279 1.391 1.590 1.794 1.849
    Dia.
    Electrical Resistance (mΩ/m) Sec 6.1 Must be smaller than requirement 157.100 78.600 49.600 34.600 24.300 17.200 14.100 12.000
    (Measured result) See Table 4
    (mΩ/m) Requirement 169.900 84.400 54.400 37.100 24.700 18.500 14.900 12.700
    Ins. Resistance Sec. 6.2 Breakdown shall not occur Pass Pass Pass Pass Pass Pass Pass Pass
    in water
    Spark test Sec. 6.3 No breakdown shall occur when the earthed Pass Pass Pass Pass Pass Pass Pass Pass
    cable is drawn through the test electrode
    Mechanical Pressure test at Sec. 7.1 Breakdown shall not occur during the Pass Pass Pass Pass Pass Pass Pass Pass
    high temp. withstand voltage test
    Low-temp Winding under Sec. 8.1 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass Pass
    low temp During the withstand voltage test,
    breakdown shall not occur.
    Abrasion Scrape (N) Sec. 9.3 Load requirement 4 4 5 5 6 6 6 6
    (times) Scrape requirement 100 100 100 150 150 180 180 200
    (times) Min. scrape result 1309 3052 951 1636 441 844 883 1058
    Heat aging Short high Sec. 10.1 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass Pass
    temp During the withstand voltage test,
    breakdown shall not occur.
    Long high Sec. 10.2 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass Pass
    temp 85 deg C. During the withstand voltage test,
    breakdown shall not occur.
    Shrinkage by (mm) Sec. 10.4 The maximum shrinkage shall not exceed Pass Pass Pass Pass Pass Pass Pass Pass
    high temp 2 mm at either end
    Resistance Gasoline Sec. 11.1 The maximum outside cable diameter change Pass Pass Pass Pass Pass Pass Pass Pass
    to chemical (%) shall meet the requirement shown in Table 13. After 5.15 5.40 0.09 2.83 −6.39 0.06 0.00 0.32
    Diesel winding, no conductor shall be visible. During the Pass Pass Pass Pass Pass pass Pass Pass
    (%) withstand voltage test, breakdown shall not occur. 4.56 4.72 8.63 −0.58 −0.40 6.20 3.55 1.88
    Engine Oil Pass Pass Pass Pass Pass Pass Pass Pass
    (%) 5.75 2.44 2.70 −8.91 −5.66 −4.84 0.83 0.70
    Flame Flamability at (Sec) Sec. 12 Any combustion flame of insulating material 0.0 0.0 0.0 0.0 0.0 0.0 4.0 4.0
    45 degree angle shall extinguish within 70 s, and a minimum of 50 mm
    of insulation at the top of the test sample shall remain
    unburned
    If Electrical Insulation Ohm mm Sec. 6.4 Greater than 109 Ohm mm Pass Pass Pass Pass Pass Pass Pass Pass
    required volume 1.6E+15 1.0E+16 1.70E+16 2.50E+21 8.60E+17 3.50E+21 7.30E+17 9.10E+19
    resistivity
    Mechanical Strip force (N) Sec. 7.2 Greater than specified by customer 28.8 Pass 31.6 Pass 41 Pass 69.7 Pass 52.5 Pass 75.7 Pass 70.1 Pass 63.8 Pass
    Requirement (Min) 2 2 5 5 5 5 5 5
    Low-temp Impact Sec. 8.2 After impact, no conductor shall be visible. Not Not Not Not Not Not Not Not
    During the withstand voltage test, breakdown required required required required required required required required
    shall not occur.
    Heat aging Thermal Sec. 10.3 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass Pass
    overload During the withstand voltage, breakdown shall not occur
    Resistance Ethanol Sec. 11.1 The maximum outside cable diameter change Pass Pass Pass Pass Pass Pass Pass Pass
    to chemical (%) shall meet the requirement shown in Table 13. After 4.01 4.42 2.70 −6.98 −6.06 −5.26 1.33 1.61
    Power steering winding, no conductor shall be visible. During the Pass Pass Pass Pass Pass Pass Pass Pass
    fluid (%) withstand voltage test, breakdown shall not occur. 4.00 6.39 3.68 5.76 −4.73 −3.48 1.33 3.71
    Automatic Pass Pass Pass Pass Pass Pass Pass Pass
    transmission (%) 4.07 5.52 4.31 6.05 −2.46 −3.96 2.11 1.51
    fluid
    Engine coolant Pass Pass Pass Pass Pass Pass Pass Pass
    (%) 3.09 0.29 0.99 1.65 −0.20 0.06 0.44 −0.32
    Battery Pass Pass Pass Pass Pass Pass Pass Pass
    (%) −0.11 1.46 1.08 2.12 −1.00 0.24 0.00 −0.32
    Ozone Sec. 11.3 The visual examination of the insulation shall Pass
    not reveal any crac
    Hot water (Ω · mm) Sec. 11.4 The insulation volume resistivity shall not be Pass
    less than 109 Ohm mm. A visual examination of
    the insulation
    Temp. and Sec. 11.5 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass Pass
    humidity During the withstand voltage test, breakdown shall
    cycling not occur
  • TABLE 4
    Cable Type and Size
    PPO
    HFSS HF
    Size Size
    Test Item Unit Wire Thickness Area (square mm) 0.35 0.50 0.75 1.00 1.25 2.00 3.00
    ISO6722 Certifi- Dimensions Thickness (mm) 0.258 0.231 0.252 0.322 0.320 0.348 0.653
    cation of Ins. (min)
    Cable Outer (mm) 1.289 1.481 1.773 1.943 2.088 2.551 3.598
    Dia.
    Electrical Resistance (mΩ/m) Sec 6.1 Must be smaller than requirement 46.200 33.100 23.200 16.800 13.900 8.840 5.76
    (Measured result) See Table 4
    (mΩ/m) Requirement 54.400 37.100 24.700 18.500 14.900 9.420 6.150
    Ins. Resistance Sec. 6.2 Breakdown shall not occur Pass Pass Pass Pass Pass Pass Pass
    in water
    Spark test Sec. 6.3 No breakdown shall occur when the earthed cable Pass Pass Pass Pass Pass Pass Pass
    is drawn through the test electrode
    Mechanical Pressure test Sec. 7.1 Breakdown shall not occur during the withstand voltage test Pass Pass Pass Pass Pass Pass Pass
    at high temp.
    Low-temp Winding under Sec. 8.1 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass
    low temp During the withstand voltage test,
    breakdown shall not occur.
    Abrasion Scrape (N) Sec. 9.3 Load requirement 5 5 6 6 6 7 7
    (times) Scrape requirement 100 150 150 180 180 750 750
    (times) Min. scrape result 1688 2141 >5000 >5000 >5000 10835 >5000
    Heat aging Short high Sec. 10.1 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass
    temp During the withstand voltage test,
    breakdown shall not occur.
    Long high Sec. 10.2 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass
    temp 85 During the withstand voltage test,
    deg C. breakdown shall not occur.
    Shrinkage by (mm) Sec. 10.4 The maximum shrinkage shall not exceed Pass Pass Pass Pass Pass Pass Pass
    high temp 2 mm at either end
    Resistance Gasoline Sec. 11.1 The maximum outside cable diameter change shall Pass Pass Pass Pass Pass Pass Pass
    to chemical (%) meet the requirement shown in Table 13. After winding, −4.79 −4.54 −3.57 2.07 2.23 6.77 13.4
    Diesel no conductor shall be visible. During the withstand voltage test, Pass Pass Pass Pass Pass Pass Pass
    (%) breakdown shall not occur. −3.50 −2.71 −1.65 3.16 −2.00 2.20 1.63
    Engine Oil Pass Pass Pass Pass Pass Pass Pass
    (%) −6.36 −5.74 1.17 2.19 −3.91 0.94 0.14
    Flame Flamability at (Sec) Sec. 12 Any combustion flame of insulating material shall 0.0 0.0 4.0 5.0 4.0 8.0 14
    45 degree extinguish within 70 s, and a minimum of 50 mm of insulation
    angle at the top of the test sample shall remain unburned
    If Electrical Insulation Ohm mm Sec. 6.4 Greater than 109 Ohm mm Pass Pass Pass Pass Pass Pass Pass
    required volume 2.90E+21 7.70E+17 8.30E+16 2.80E+16 3.20E+16 9.70E+16 3.40E+21
    resistivity
    Mechanical Strip force (N) Sec. 7.2 Greater than specified by customer 63 Pass 115.3 69.4 Pass 88.0 Pass 112 Pass 113.3 Pass 230
    Requirement (Min) 5 5 5 5 5 10 15
    Low-temp Impact Sec. 8.2 After impact, no conductor shall be visible. Not Not Pass Pass Pass Pass Pass
    During the withstand voltage test, breakdown shall not occur. required required
    Heat aging Thermal Sec. 10.3 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass
    overload During the withstand voltage, breakdown shall not occur
    Resistance Ethanol Sec. 11.1 The maximum outside cable diameter change Pass Pass Pass Pass Pass Pass Pass
    to chemical (%) shall meet the requirement shown in Table 13. After winding, 5.93 −5.36 1.17 5.97 −3.82 1.45 1.3
    Power steering no conductor shall be visible. During the withstand voltage test, Pass Pass Pass Pass Pass Pass Pass
    fluid (%) breakdown shall not occur. −5.36 −3.72 −3.52 6.99 −2.64 2.08 0.36
    Automatic Pass Pass Pass Pass Pass Pass Pass
    transmission (%) −5.65 −4.61 −3.09 6.99 −2.55 1.92 0.58
    fluid
    Engine coolant Pass Pass Pass Pass Pass Pass Pass
    (%) −7.22 0.13 −5.54 −1.17 0.00 0.74 0.64
    Battery Pass Pass Pass Pass Pass Pass Pass
    (%) 0.78 −0.19 −0.32 5.00 0.38 −0.04 0
    Ozone Sec. 11.3 The visual examination of the insulation shall not Pass
    reveal any cracks
    Hot water (Ω · mm) Sec. 11.4 The insulation volume resistivity shall not be less Pass
    than 109 Ohm mm. A visual examination of the insulation
    Temp. and Sec. 11.5 After winding, no conductor shall be visible. Pass Pass Pass Pass Pass Pass Pass
    humidity During the withstand voltage test, breakdown shall not occur
    cycling
  • Listed below in Table 5 is a measurement of the PPE toughness for ISO 6722 needle abrasion cycles to failure compared to material thickness using a 7-N load and 0.45 millimeter needle.
  • TABLE 5
    0.4-mm cable
    Insulation insulation 0.25-mm cable 0.16-mm cable
    Material thickness insulation thickness insulation thickness
    PPE 10000 200 110
  • Current PVC tape construction has thicknesses for backings of 0.09-mm and above. This thickness for PVC is required to provide a minimum amount of toughness or abrasion protection while also providing sufficient tensile and tear strength that PVC tape may be applied. Given data from Table 5 and the current film thickness, one can conclude that significantly thinner backings are possible with PPE. PPE backings as thin as 0.03-mm or less could be achieved and still maintain equivalent abrasion protection and toughness to the current PVC backings. Given this potential for reducing backing thickness and specific gravity differences, a weight reduction of 75% seems reasonable with a PPE tape compared to a PVC tape.
  • With thinner backings, greater linear length of tape can be put up on each roll of tape. This is important for handling in and application of tapes on substrates or wire harnesses. The physical dimensions of a tape roll are limited to physical constraints with a manufacturing operation and by human ergonomic issues. Too large of roll diameters are ergonomically awkward and uncomfortable for continuous daily use. However with thinner tapes, longer roll lengths are possible while still maintaining an acceptable roll diameter. This then benefits the manufacturing by minimizing the number of times workers must retrieve new rolls. For an automotive wire harness manufacturing, a new roll may be required as often as once or twice per wire harness. Also benefit is achieved in shipping since more tape can be shipped for a given container volume.
  • In addition to being halogen free and tougher than PVC, PPE also offers ability to be used in higher temperature environments. Currently PVC may be rated for use at 105° C. which limits it to select exterior automotive applications. Many of the applications however, such as engine and chassis require temperature ratings of 125° C. and above. This is feasible with PPE which has been rated to 125° C. for continuous use and with excursions to 150° C. and above.
  • PPE backings could be used with any desired pressure sensitive adhesive available today. This would include natural rubber, natural rubber/synthetic rubber blends, synthetic rubber, acrylic, or other adhesive systems.
  • Turning now to FIG. 5 it is a schematic representation of the tape 50 of the present invention with the PPE material 52 having top 53 and bottom 55 surfaces where an adhesive 54 would be attached to the bottom surface. The adhesive is generally a pressure sensitive adhesive which would facilitate the adhesion of the PPE tape to a desirable substrate. The tape would frequently be made available with a pealable backing 56.
  • There are a wide variety of pressure sensitive adhesives well known in the trade for applying such adhesives to thermal plastic materials. Such adhesives can be natural rubber, synthetic rubber, cross-link acrylics or blends of these polymers. Formulated adhesives may be include Morscic, Acronyl or Duro-Tak that are particular types of acrylic adhesive to be used to coat the bottom portion of the PPE material. The pealable tape can be a variety of materials such as paper, cellulose or any plastic film materials that can be coated with a release layer such as a silicone coating well known in the art.

Claims (13)

1. A vehicular harness comprising:
a plurality of insulated non-halogenated, heavy metal free vehicular cables, each comprising:
an inner core of a copper based metal wire having a thickness area of at least about 0.1 sq. mm, and
an outer insulation, covering the length of the inner core, comprised of a thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto, the inner core of a copper based metal wire with the outer insulation capable of meeting the testing standard ISO 6722; and
a tape comprising a layer, wherein the layer has a first surface and a second surface, of the thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto, and a contact adhesive adhering to the first surface, wrapped around the plurality of cables to hold the cables together.
2. The vehicular harness of claim 1 wherein the copper core has a thickness area in a cross section of the core of about 0.1 to 1.5 sq. mm.
3. The vehicular harness of claim 1 wherein the copper core has a thickness area in a cross section of the core of up to about 3 sq. mm.
4. The vehicular harness of claim 1 wherein the polyphenylene ether is further comprised of a polymer formed from an ethylenically unsaturated material.
5. The vehicular harness of claim 4 wherein the ethylenically unsaturated material is comprised of an olefinically unsaturated material.
6. The vehicular harness of claim 5 wherein the ethylenically unsaturated material is comprised of a styrene butadiene material.
7. A tape comprised of a layer, having a top and bottom thereto, of a thermoplastic polyphenylene ether composition that has no halogen or heavy metal added thereto; a contact adhesive adhering to one side the thermoplastic polyphenylene ether composition; and a pealable layer adhered to the contact adhesive, which pealable layer is capable of being pealed off the tape, thereby permitting the thermoplastic polyphenylene ether composition to be applied to a desired surface.
8. The vehicular harness of claim 1 wherein the testing standard ISO 6722 comprises the inner core of a copper based metal wire with the outer insulation being constructed and arranged to withstand flame at a 45 degree angle such that any combustion flame of the outer insulation extinguishes within 70 seconds and a minimum of 50 mm of insulation at the top of the insulated cable remains unburned.
9. The vehicular harness of claim 1 wherein the inner core of a copper based metal wire has a thickness area of about 0.1 mm2 to about 0.13 mm2.
10. The tape of claim 7 wherein the thickness of the tape is 0.03 mm or less.
11. The tape of claim 7 wherein the thickness of the tape is 0.03 mm to 0.09 mm.
12. The vehicular harness of claim 1 wherein the thickness of the tape is 0.03 mm or less.
13. The vehicular harness of claim 1 wherein the thickness of the tape is 0.03 mm to 0.09 mm.
US11/483,788 2006-06-23 2006-07-10 Non-halogenated heavy metal free vehicular cable insulation and harness covering material Active US7534962B2 (en)

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US11/483,788 US7534962B2 (en) 2006-06-23 2006-07-10 Non-halogenated heavy metal free vehicular cable insulation and harness covering material
EP07075531A EP1879197A3 (en) 2006-07-10 2007-06-27 Non-halogenated heavy metal free vehicular cable insulation and harness covering material
KR1020070068604A KR100896588B1 (en) 2006-07-10 2007-07-09 Non-halogenated heavy metal free vehicular cable insulation and harness covering material
CN2007101286152A CN101105987B (en) 2006-07-10 2007-07-09 Non-halogenated heavy metal free vehicular cable insulation and harness covering material

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US11/473,648 US7408116B2 (en) 2006-06-23 2006-06-23 Insulated non-halogenated heavy metal free vehicular cable
US11/483,788 US7534962B2 (en) 2006-06-23 2006-07-10 Non-halogenated heavy metal free vehicular cable insulation and harness covering material

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US20090133896A1 (en) * 2007-11-27 2009-05-28 Kazunari Kosaka Multiconductor cable assembly and fabrication method therefor
US20110079427A1 (en) * 2009-10-07 2011-04-07 Lakshmikant Suryakant Powale Insulated non-halogenated covered aluminum conductor and wire harness assembly
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JP6870642B2 (en) * 2018-03-28 2021-05-12 住友電装株式会社 Composite cable pair
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