WO2011013566A1 - 絶縁フィルム及びそれを用いたフラットケーブル - Google Patents
絶縁フィルム及びそれを用いたフラットケーブル Download PDFInfo
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- WO2011013566A1 WO2011013566A1 PCT/JP2010/062329 JP2010062329W WO2011013566A1 WO 2011013566 A1 WO2011013566 A1 WO 2011013566A1 JP 2010062329 W JP2010062329 W JP 2010062329W WO 2011013566 A1 WO2011013566 A1 WO 2011013566A1
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- resin
- resin layer
- flame retardant
- flat cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/286—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysulphones; polysulfides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/24—Organic non-macromolecular coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/206—Insulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
Definitions
- the present invention relates to an insulating film used as a covering material for a flat cable, and a flat cable using the same.
- a multi-core flat cable is used as an electric wire for internal wiring of electronic equipment.
- a flat cable is manufactured by sandwiching a plurality of conductors in parallel between two insulating films and fusing the insulating films together to integrate them.
- This insulating film generally has an adhesive layer in contact with a conductor and a resin film on the outside thereof.
- a biaxially stretched polyethylene terephthalate (PET) film having excellent mechanical properties and electrical properties is widely used.
- Patent Document 1 discloses a flat cable in which a flame-retardant olefin resin film is laminated on an insulating base film, and further, an olefin-based thermal adhesive resin film is laminated on the flame-retardant olefin resin film. A covering material and a flat cable using the same are disclosed.
- a flame-retardant olefin resin film a low-density polyethylene or the like blended with a flame retardant is used.
- Patent Document 2 discloses a tape for flat cable in which a film-like base material, an anchor coat layer, and a heat seal layer are sequentially laminated. A resin composition containing a polyester resin and a flame retardant is heat sealed. It is used as a layer.
- Flat cables used for applications that become hot during use, such as automobile internal wiring, are required to have heat resistance, that is, characteristics that do not deteriorate even when left at high temperatures for a long time.
- flexibility is required from the viewpoint of workability during wiring. This is because a flexible flat cable, that is, a hard flat cable, cannot be bent freely at the time of wiring and requires an extra force.
- the low density polyethylene used as an adhesive layer in the flat cable described in Patent Document 1 has a problem that heat resistance is poor.
- a flame-retardant olefin resin film that has been formed into a film shape is laminated on the base film, and considering the handleability as a film, the thickness of the flame-retardant olefin resin film cannot be reduced. The flexibility is also worse.
- Polyester resins used in Patent Document 2 are flexible, but many of them have a low viscosity at high temperatures, and if left for a long time under high temperature conditions, the resin softens and tends to flow out of the flat cable. is there. Polyester resins are easily hydrolyzed, resulting in poor heat resistance and moisture resistance.
- the resin can be crosslinked by irradiation with ionizing radiation.
- irradiation crosslinking may cause deterioration of the base film, resulting in a decrease in the mechanical strength of the flat cable.
- the manufacturing cost increases.
- an object of the present invention is to provide an insulating film that is excellent in heat resistance and flame retardancy and is flexible and excellent in workability during wiring, and a flat cable using the same.
- the present invention is an insulating film in which a resin film, an anchor coat layer, and a flame retardant resin layer are laminated in this order.
- the flame retardant resin layer has a flexural modulus of 100 MPa or more and 900 MPa measured according to JIS K7171.
- An insulating film comprising a resin composition containing 60 parts by mass or more and 240 parts by mass or less of a flame retardant agent with respect to 100 parts by mass of polypropylene resin (less than 1 part of the present invention).
- both flexibility and heat resistance can be achieved.
- the flame retardant can pass the UL standard flame retardant test (VW-1 test). An insulating film having excellent properties can be obtained.
- first resin layer between the anchor coat layer and the flame retardant resin layer (second invention of the present application).
- second invention of the present application it is preferable to have a first resin layer between the anchor coat layer and the flame retardant resin layer.
- the formation of the flame retardant resin layer is often performed by an extrusion method, by extruding the resin composition forming the flame retardant resin layer and the resin composition forming the first resin layer together, Occurrence of die scum can be reduced, and extrusion processability can be improved.
- a second resin layer on the flame retardant resin layer (the third invention of the present application). Extrudability can be further improved by providing the second resin layer on the flame retardant resin layer. Moreover, when resin excellent in the adhesive force with a conductor is used as a 2nd resin layer, the adhesive force of an insulating film and a conductor can be improved.
- the first resin layer and the second resin layer may be the same material or different materials.
- the second resin layer is preferably composed mainly of an acid-modified polypropylene resin (the fourth invention of the present application).
- the acid-modified polypropylene resin hardly absorbs water or hydrolyzes, is excellent in heat and moisture resistance, and has excellent adhesion to a conductor.
- the thicknesses of the first resin layer and the second resin layer are each preferably 1 ⁇ m or more and 10 ⁇ m or less (the fifth invention of the present application).
- the thickness of the first and second resin layers is less than 1 ⁇ m, the effect of improving the extrudability is reduced.
- the thickness exceeds 10 ⁇ m the thickness of the entire insulating film becomes thick, and thus the flexibility becomes poor.
- the present invention also provides a flat cable using the above insulating film as a covering material (the sixth invention of the present application).
- This flat cable is excellent in heat resistance, flame retardancy and flexibility.
- an insulating film excellent in heat resistance, flame retardancy and flexibility and a flat cable using the same can be obtained.
- This flat cable can be suitably used even under conditions of high temperature atmosphere such as wiring in an automobile.
- FIG. 3 is a view showing a flat cable of the present invention, and is a cross-sectional view taken along line A-A ′ of FIG.
- FIG. 1 is a cross-sectional view showing an example of the insulating film of the present invention.
- a resin film 1, an anchor coat layer 2, a first resin layer 3, a flame retardant resin layer 4, and a second resin layer 5 are laminated in this order.
- the 1st resin layer 3 and the 2nd resin layer 5 can be provided arbitrarily.
- the insulating film is used by slitting into an arbitrary shape.
- FIG. 2 is a view showing a flat cable using the insulating film of the present invention
- FIG. 3 is a cross-sectional view taken along line A-A ′ of FIG.
- the two insulating films 6 are bonded together in a state where the conductor 7 is sandwiched between the two insulating films 6.
- the second resin layer 5 and the conductor 7 are in contact with each other.
- the flame retardant resin layer 4 and the conductor 7 are in contact with each other.
- the end of the flat cable has a configuration in which the conductor 7 is exposed by providing an insulating film only on one side so that the connection terminal provided in the electronic device and the conductor 7 can be connected.
- Resin film 1 is made of a resin material having excellent flexibility, and examples thereof include polyester resin, polyphenylene sulfide resin, and polyimide resin.
- Polyester resins include polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate resin, polybutylene naphthalate resin, polytrimethylene terephthalate resin, polytrimethylene naphthalate resin, polycyclohexanedimethyl terephthalate resin, polycyclohexanedimethyl naphthalate polyarylate Examples thereof include resins.
- polyethylene terephthalate resin is preferably used as the resin film from the viewpoint of electrical characteristics, mechanical characteristics, cost, and the like.
- the thickness of the resin film is preferably 12 to 50 ⁇ m.
- the anchor coat layer is used to improve the adhesion between the resin film 1 and the flame retardant resin layer 4 or the first resin layer 3.
- Any material can be used for the anchor coat layer.
- a urethane-based anchor coat material in which an isocyanate-based curing agent is mixed with a polyurethane resin as a main component can be preferably used.
- the thickness of the anchor coat layer is preferably 0.5 to 5 ⁇ m.
- Any resin can be used as the first resin layer, and it is preferable to use a resin excellent in moisture and heat resistance.
- the resin excellent in moisture and heat resistance include polypropylene resin, acid-modified polypropylene resin, and acid-modified polyethylene resin.
- Any resin can be used as the second resin layer, and it is preferable to use a resin excellent in moisture and heat resistance.
- the resin excellent in moisture and heat resistance include polypropylene resin, acid-modified polypropylene resin, and acid-modified polyethylene resin. From the viewpoint of increasing the adhesive strength with the conductor, it is preferable to use an acid-modified polypropylene resin.
- Examples of the acid-modified polypropylene resin include maleic anhydride-modified polypropylene resin, acrylic acid-modified polypropylene resin, and itaconic acid-modified polypropylene resin.
- a polypropylene resin modified with a functional group such as an epoxy group, a hydroxyl group, a carboxyl group, or an amino group can also be used.
- first resin layer and the second resin layer these resins may be used alone, or various additives such as antioxidants and other resins may be mixed and used.
- the first resin layer and the second resin layer may be the same material or different materials.
- the flame retardant resin layer is used to improve the flame resistance of the flat cable.
- the resin composition used for the flame retardant resin layer contains, as a main component, a polypropylene resin having a flexural modulus measured according to JIS K7171 of 100 MPa or more and less than 900 MPa.
- the flexural modulus is 900 MPa or more, the flame retardant resin layer becomes hard and the flexibility of the insulating film and the flat cable is deteriorated.
- the flexural modulus is less than 100 MPa, the flame-retardant resin layer becomes too soft and the heat resistance and strength are poor.
- the polypropylene resin is excellent in heat resistance, and necessary heat resistance and moisture resistance can be obtained without irradiation crosslinking.
- polypropylene resin either a homopolymer of propylene (homopolymer) or a copolymer with ethylene (random copolymer, block copolymer) can be used.
- modified polypropylene resins such as acid-modified polypropylene resins, and resins (elastomer-modified polypropylene resins) in which polypropylene is mixed with styrene-based elastomers such as SEBS or olefin-based thermoplastic elastomers can also be used.
- these modified polypropylene resins are also referred to as polypropylene resins. These resins are used alone or in combination. When combining several resin, it adjusts so that the bending elastic modulus of resin after mixing may be in the range of 100 MPa or more and less than 900 MPa.
- the resin composition used for the flame retardant resin layer contains 60 parts by mass or more and 240 parts by mass or less of the flame retardant imparting agent with respect to 100 parts by mass of the polypropylene resin.
- the amount of the flame retardant imparting agent is less than 60 parts by mass, flame retardancy satisfying the UL standard cannot be obtained. Further, when the amount of the flame retardant imparting agent is more than 240 parts by mass, the film processability and adhesive strength of the flame retardant resin layer are lowered.
- Any flame retardant imparting agent such as a halogen flame retardant, a phosphorus flame retardant, or a non-halogen flame retardant can be used.
- Halogen flame retardants include chlorine flame retardants such as chlorinated paraffin, chlorinated polyethylene, chlorinated polyphenol, perchlorpentacyclodecane, ethylene bispentabromodiphenyl, tetrabromoethane, tetraboromobisphenol A, hexabromo.
- brominated flame retardant include benzene, decabromobiphenyl ether, tetrabromophthalic anhydride, polydibromophenylene oxide, hexabromocyclodecane, and ammonium bromide.
- Phosphorus flame retardants include cyclic organophosphorus compounds such as 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, triallyl phosphate, alkylallyl phosphate, alkyl phosphate, dimethyl phosphate , Phosphorate, halogenated phosphate ester, trimethyl phosphate, tributyl phosphate, trioctyl phosphate, tributoxyethyl phosphate, octyl diphenyl phosphate, tricresyl phosphate, cresyl phenyl phosphate, triphenyl phosphate, tris (chloroethyl) phosphate , Tris (2-chloropropyl) phosphate, tris (2,3-dichloropropyl) phosphate, tris (2,3-dibromopropyl) phosphate , Tris (bromochloropropyl) phosphate,
- non-halogen flame retardant examples include metal oxides such as aluminum hydroxide, magnesium hydroxide, and magnesium carbonate, metal hydroxides, and nitrogen compounds such as melamine cyanurate, triazine, isocyanurate, urea, and guanidine.
- a halogen-based flame retardant such as a brominated flame retardant or a chlorinated flame retardant because flame retardancy is improved.
- These flame retardants may be used alone or in combination of two kinds.
- Use of a flame retardant aid in combination with a halogen-based flame retardant is preferred because the flame retardancy is further improved.
- the flame retardant aid and the flame retardant are collectively referred to as a flame retardant imparting agent.
- antimony trioxide can be preferably used as the flame retardant aid.
- antioxidants may be added to the flame retardant resin layer.
- the insulating film of the present invention is obtained by laminating at least the above resin film, anchor coat layer, and flame retardant resin layer.
- a first resin layer may be provided between the anchor coat layer and the flame retardant resin layer.
- a second resin layer may be provided on the flame retardant resin layer.
- the insulating film is formed on the resin film provided with an anchor coat layer after the first resin layer, the flame retardant resin layer, and the second resin layer are simultaneously extruded by a melt extrusion method to form a three-layer laminate film, for example. And can be manufactured by heat lamination. By such a method, it becomes possible to reduce the heat shrinkage of the resin layer when heat laminating, and the curling of the insulating film can be prevented.
- the first resin layer, the flame retardant resin layer, and the second resin layer may be laminated on the resin film provided with the anchor coat layer by a method such as melt extrusion.
- two insulating films 6 are placed on the outside of a plurality of conductors 7 so that the resin film 1 faces outside, and heated using a known thermal laminator or a hot press device.
- the conductor 7, the insulating film 6, and the insulating film 6 are bonded together by performing pressure treatment.
- the conductor 7 at the end can be exposed by making a hole in a part of the insulating film 6 at the portion to be the end of the flat cable.
- a long flat cable can be obtained by continuously performing thermal lamination or hot pressing. Thereafter, it can be cut to a certain length to obtain a flat cable having an arbitrary length.
- a conductive metal such as copper, tin-plated annealed copper, or nickel-plated annealed copper can be used.
- the conductor preferably has a rectangular shape, and its thickness corresponds to the amount of current used, but is preferably 15 ⁇ m to 100 ⁇ m in view of the flexibility of the flat cable.
- Example 1 (Preparation of resin composition) 60 parts by mass of a brominated flame retardant in 100 parts by mass of polypropylene (trade name Novatec FW4BT, manufactured by Nippon Polypro Co., Ltd.) having a flexural modulus (hereinafter referred to as flexural modulus) of 850 MPa measured in accordance with JIS K7171 (Albemarle Co., Ltd., trade name SAYTEX8010) and 20 parts by mass of antimony trioxide were added and mixed uniformly using a biaxial mixer to prepare a resin composition.
- flexural modulus 850 MPa measured in accordance with JIS K7171 (Albemarle Co., Ltd., trade name SAYTEX8010) and 20 parts by mass of antimony trioxide
- the produced resin composition and the polypropylene resin (trade name Novatec FX4E, manufactured by Nippon Polypro Co., Ltd., flexural modulus 650 MPa) forming the first and second resin layers are simultaneously extruded with a T-die, and the first A film in which three layers of a resin layer (thickness 5 ⁇ m), a flame retardant resin layer (thickness 30 ⁇ m), and a second resin layer (thickness 5 ⁇ m) were laminated was formed.
- an ethyl acetate solution of polyurethane resin (Mitsui Chemical Polyurethane Co., Ltd., trade name Takelac A-310) and an isocyanate curing agent ethyl acetate solution (Mitsui Chemical Polyurethanes Co., Ltd., trade name Takenate A-3)
- an anchor coating agent mixed at a ratio of 100: 15 in terms of solid content and applying it to the surface of a polyethylene terephthalate resin film (made by Teijin DuPont Films, Inc., thickness 25 ⁇ m) subjected to corona treatment on the surface
- an anchor coat layer having a thickness of 3 microns was formed on the surface of the resin film.
- the surface of the anchor coat layer can be obtained by applying heat and pressure treatment (dry lamination) on the anchor coat layer side of the resin film so as to overlap with the three-layer laminated film.
- An insulating film in which a first resin layer, a flame retardant resin layer, and a second resin layer were laminated was prepared.
- the produced flat cable was cut into a length of about 100 mm and formed into a ring shape with a diameter of 30 mm, and then the strength required to compress the diameter of the ring by 50% was measured.
- the compressive strength is high, and when the flat cable is flexible, the compressive strength is low and can be easily bent.
- the case where the strength was 50 g or less was judged to have good flexibility.
- Example 2 As a resin composition used for the flame retardant resin layer, 60 parts by mass of a brominated flame retardant (Albemarle Co., Ltd.) is added to 100 parts by mass of a polypropylene resin having a flexural modulus of 250 MPa (manufactured by Nippon Polypro Co., Ltd., trade name WELNEX RFG4VA). ), Trade name SAYTEX 8010) and 20 parts by mass of antimony trioxide are added as maleic acid-modified polypropylene (trade name Admer QF551, manufactured by Mitsui Chemicals, Inc.) as the first resin layer.
- Admer QF551 manufactured by Mitsui Chemicals, Inc.
- a flat cable was prepared in the same manner as in Example 1 except that a polypropylene resin having a flexural modulus of 1050 MPa (trade name: Novatec FG3DC, manufactured by Nippon Polypro Co., Ltd.) was used as the resin layer, and a series of evaluations were performed. It was.
- a polypropylene resin having a flexural modulus of 1050 MPa (trade name: Novatec FG3DC, manufactured by Nippon Polypro Co., Ltd.) was used as the resin layer, and a series of evaluations were performed. It was.
- Example 3 As a resin composition used for the flame retardant resin layer, 60 parts by mass of a brominated flame retardant (Albemarle Co., Ltd.) is added to 100 parts by mass of a polypropylene resin having a flexural modulus of 250 MPa (manufactured by Nippon Polypro Co., Ltd., trade name WELNEX RFG4VA).
- Example 4 As a resin composition used for the flame retardant resin layer, polypropylene having a flexural modulus of 850 MPa (manufactured by Nippon Polypro Co., Ltd., trade name: Novatec FW4BT), olefin-based thermoplastic elastomer (manufactured by Sumitomo Chemical Co., Ltd., trade name: Tough Selenium T3722), A resin composition in which 60 parts by mass of a brominated flame retardant (manufactured by Albemarle Co., Ltd., trade name SAYTEX 8010) and 20 parts by mass of antimony trioxide are added to 100 parts by mass of a resin mixed with (a flexural modulus of 200 MPa after mixing). A flat cable was produced in the same manner as in Example 1 except that the product was used, and a series of evaluations were performed.
- polypropylene having a flexural modulus of 850 MPa manufactured by Nippon Polypro Co., Ltd., trade name: Novatec
- Example 5 As a resin composition used for the flame retardant resin layer, 100 parts by mass of magnesium hydroxide (Kyowa Chemical Industry Co., Ltd.) is added to 100 parts by mass of a polypropylene resin having a flexural modulus of 250 MPa (trade name WELNEX RFG4VA manufactured by Nippon Polypro Co., Ltd.). Co., Ltd., trade name Kisuma 5A) and 50 parts by mass of cyclic phosphorus compound (Sanko Co., Ltd.
- magnesium hydroxide Korean Chemical Industry Co., Ltd.
- Comparative Example 1 As a resin composition used for the flame retardant resin layer, 60 parts by mass of a brominated flame retardant (Albemarle Co., Ltd.) is added to 100 parts by mass of a polypropylene resin having a flexural modulus of 1700 MPa (trade name Novatec FB3HAT, manufactured by Nippon Polypro Co., Ltd.).
- a flat cable was produced in the same manner as in Example 1 except that a polypropylene resin having a flexural modulus of 650 MPa (trade name: Novatec FX4E, manufactured by Nippon Polypro Co., Ltd.) was used as the resin layer, and a series of evaluations were performed. .
- a polyester resin manufactured by Unitika Ltd., trade name Elitel 3220, softening point 60 ° C.
- bromine flame retardant manufactured by Albemarle Co., Ltd., product
- SAYTEX 8010 20 parts by mass of antimony trioxide resin composition
- 20 parts by mass of antimony trioxide resin composition were used as a first resin layer and a second resin layer as a polyester resin (trade name Elitel 3400, manufactured by Unitika Ltd., softening point 40 ° C.
- a flat cable was prepared in the same manner as in Example 1 except that the first resin layer, the flame-retardant resin layer, and the second resin layer were laminated in this order on the resin film on which the anchor coat layer was formed.
- a series of evaluations were made. Each layer was formed by applying the resin dissolved in a solvent and then drying the solvent.
- a resin composition used for the flame retardant resin layer As a resin composition used for the flame retardant resin layer, a polypropylene resin having a flexural modulus of 850 MPa (manufactured by Nippon Polypro Co., Ltd., trade name: Novatec FW4BT) and an olefin-based thermoplastic elastomer (manufactured by Mitsui Chemicals, Inc., trade name) 60 parts by mass of a brominated flame retardant (trade name: SAYTEX 8010 manufactured by Albemarle Co., Ltd.) in 100 parts by mass of a resin (Tuffmer A-1050S) mixed at 50:50 (mass ratio)
- a flat cable was prepared in the same manner as in Example 1 except that a resin composition to which 20 parts by mass of antimony trioxide was added was used, and a series of evaluations were performed. The results are shown in Table 1.
- Example 1 in which a polypropylene resin having a flexural modulus of 100 MPa or more and 900 MPa or less is used for the flame retardant resin layer, the flexural strength, which is an index of flexibility, is 50 g or less, and the flexibility is excellent. The flame retardancy was also good.
- Comparative Example 1 in which a polypropylene resin having a flexural modulus of 1700 MPa was used for the flame-retardant resin layer, the heat resistance and flame retardancy were good, but the bending strength was as high as 60 g and the flexibility was poor.
- Comparative Example 2 using a polyester resin for the flame retardant resin layer and the resin layer was excellent in flexibility and flame retardancy but had poor heat resistance.
- Comparative Example 3 using a polypropylene resin having a flexural modulus of 80 MPa for the flame retardant resin layer was excellent in flexibility and flame retardancy but had poor heat resistance. From the above, it can be seen that the flat cable using the insulating film of the present invention can achieve all of heat resistance, flexibility and flame retardancy.
Landscapes
- Insulated Conductors (AREA)
- Insulating Bodies (AREA)
- Laminated Bodies (AREA)
Abstract
Description
また、酸変性ポリプロピレン樹脂等の変性ポリプロピレン樹脂、さらにSEBS等のスチレン系エラストマーやオレフィン系熱可塑性エラストマーとポリプロピレンとを混合した樹脂(エラストマー変性ポリプロピレン樹脂)も使用可能である。本明細書中ではこれらの変性ポリプロピレン樹脂も含めてはポリプロピレン樹脂と記載する。これらの樹脂を単独または複数組合せて使用する。複数の樹脂を組み合わせる場合は、混合後の樹脂の曲げ弾性率が100MPa以上900MPa未満の範囲となるように調整する。
(樹脂組成物の作製)
JIS K7171に準拠して測定された曲げ弾性率(以下、曲げ弾性率)が850MPaであるポリプロピレン(日本ポリプロ(株)製、商品名ノバテックFW4BT)100質量部に、60質量部の臭素系難燃剤(アルベマール(株)製、商品名SAYTEX8010)および20質量部の三酸化アンチモンを加え、二軸混合機を用いて均一に混合して樹脂組成物を作製した。
作製した樹脂組成物と、第一及び第二の樹脂層を形成するポリプロピレン樹脂(日本ポリプロ(株)製、商品名ノバテックFX4E、曲げ弾性率650MPa)とをTダイで同時に押し出して、第一の樹脂層(厚み5μm)、難燃樹脂層(厚み30μm)、第二の樹脂層(厚み5μm)の3層を積層したフィルムを形成した。次いで、ポリウレタン樹脂の酢酸エチル溶液(三井化学ポリウレタン(株)製、商品名タケラックA-310)とイソシアネート系硬化剤の酢酸エチル溶液(三井化学ポリウレタン(株)製、商品名タケネートA-3)とを固形分換算で100:15の割合で混合したアンカーコート剤を準備し、表面にコロナ処理を行ったポリエチレンテレフタレート樹脂フィルム(帝人デュポンフィルム(株)製、厚さ25μm)の表面に塗布した後、乾燥して溶剤を除去することで、樹脂フィルムの表面に厚さ3ミクロンのアンカーコート層を形成した。
導体である錫メッキ軟銅箔(厚さ35μm、幅1.5mm)8本を2.5mmピッチで平行に並べた状態で、2枚の絶縁フィルムで挟み込み、130℃に加熱した熱ラミネータを用いて加熱加圧処理を行って、導体の両面を絶縁フィルムで被覆した後、任意の長さに切断してフラットケーブルを作製した。
作製したフラットケーブルを長さ約100mmに切断し、直径30mmの輪状にした後、輪の直径を50%圧縮するのに必要な強度を測定した。フラットケーブルが硬い場合は圧縮強度が高くなり、フラットケーブルが柔軟な場合は圧縮強度が低くなり容易に曲げることが可能である。強度が50g以下の場合を柔軟性良好と判断した。
作製したフラットケーブルを2つ折りにした状態で140℃恒温槽内に7日間放置した後、接着剤のはみ出し、絶縁層の剥がれの有無を目視で観察した。放置後の外観が良好であるものを○、接着剤のはみ出しや絶縁層の剥がれがあり外観が悪くなっているものを×とした。
作製したフラットケーブルに対して、UL規格1581のVW-1に規定される垂直燃焼試験を行った。より具体的には、フラットケーブルを10本準備し、着火後、10本中1本以上燃焼したもの、燃焼落下物によりフラットケーブルの下方に配置した脱脂綿が燃焼したもの、またはフラットケーブルの上部に取り付けたクラフト紙が燃焼したものを不合格とし、その他を合格とした。
難燃樹脂層に用いる樹脂組成物として、曲げ弾性率が250MPaであるポリプロピレン樹脂(日本ポリプロ(株)製、商品名WELNEX RFG4VA)100質量部に、60質量部の臭素系難燃剤(アルベマール(株)製、商品名SAYTEX8010)および20質量部の三酸化アンチモンを加えた樹脂組成物を、第一の樹脂層としてマレイン酸変性ポリプロピレン(三井化学(株)製、商品名アドマーQF551)を、第二の樹脂層として曲げ弾性率が1050MPaであるポリプロピレン樹脂(日本ポリプロ(株)製、商品名ノバテックFG3DC)を使用したこと以外は実施例1と同様にしてフラットケーブルを作製し、一連の評価を行った。
難燃樹脂層に用いる樹脂組成物として、曲げ弾性率が250MPaであるポリプロピレン樹脂(日本ポリプロ(株)製、商品名WELNEX RFG4VA)100質量部に、60質量部の臭素系難燃剤(アルベマール(株)製、商品名SAYTEX8010)および20質量部の三酸化アンチモンを加えた樹脂組成物を、第一の樹脂層及び第二の樹脂層としてマレイン酸変性ポリプロピレン(三井化学(株)製、商品名アドマーQF551)を使用したこと以外は実施例1と同様にしてフラットケーブルを作製し、一連の評価を行った。
難燃樹脂層に用いる樹脂組成物として、曲げ弾性率が850MPaであるポリプロピレン(日本ポリプロ(株)製、商品名ノバテックFW4BT)と、オレフィン系熱可塑性エラストマー(住友化学製、商品名タフセレンT3722)とを混合した樹脂(混合後の曲げ弾性率200MPa)100質量部に、60質量部の臭素系難燃剤(アルベマール(株)製、商品名SAYTEX8010)および20質量部の三酸化アンチモンを加えた樹脂組成物を用いたこと以外は実施例1と同様にしてフラットケーブルを作製し、一連の評価を行った。
難燃樹脂層に用いる樹脂組成物として、曲げ弾性率が250MPaであるポリプロピレン樹脂(日本ポリプロ(株)製、商品名WELNEX RFG4VA)100質量部に、100質量部の水酸化マグネシウム(協和化学工業(株)、商品名キスマ5A)および50質量部の環状リン化合物(三光(株) HCA-HQ-HS)およびメラミンシアヌレート(日産化学(株)製 MC860)を加えた樹脂組成物を、第一の樹脂層としてマレイン酸変性ポリプロピレン(三井化学(株)製、商品名アドマーQF551)を、第二の樹脂層として曲げ弾性率が1050MPaであるポリプロピレン樹脂(日本ポリプロ(株)製、商品名ノバテックFG3DC)使用したこと以外は実施例1と同様にしてフラットケーブルを作製し、一連の評価を行った。
難燃樹脂層に用いる樹脂組成物として、曲げ弾性率が1700MPaであるポリプロピレン樹脂(日本ポリプロ(株)製、商品名ノバテックFB3HAT)100質量部に60質量部の臭素系難燃剤(アルベマール(株)製、商品名SAYTEX8010)および20質量部の三酸化アンチモンを加えた樹脂組成物を、第一の樹脂層としてマレイン酸変性ポリプロピレン(三井化学(株)製、商品名アドマーQF551)を、第二の樹脂層とし曲げ弾性率が650MPaであるポリプロピレン樹脂(日本ポリプロ(株)製、商品名ノバテックFX4E)を用いたこと以外は実施例1と同様にしてフラットケーブルを作製し、一連の評価を行った。
難燃樹脂層に用いる樹脂組成物として、ポリエステル樹脂(ユニチカ(株)製、商品名エリーテル3220、軟化点60℃)100質量部に60質量部の臭素系難燃剤(アルベマール(株)製、商品名SAYTEX8010)および20質量部の三酸化アンチモンを加えた樹脂組成物を、第一の樹脂層、及び第二の樹脂層としてポリエステル樹脂(ユニチカ(株)製、商品名エリーテル3400、軟化点40℃)を用い、アンカーコート層を形成した樹脂フィルム上に第一の樹脂層、難燃樹脂層、第二の樹脂層をこの順に積層したこと以外は実施例1と同様にしてフラットケーブルを作製し、一連の評価を行った。なお、各層は、樹脂を溶剤に溶解した状態で塗布し、その後溶剤を乾燥して形成した。
難燃樹脂層に用いる樹脂組成物として、曲げ弾性率が850MPaであるポリプロピレン樹脂(日本ポリプロ(株)製、商品名ノバテックFW4BT)と、オレフィン系熱可塑性エラストマー(三井化学(株)製、商品名タフマーA-1050S)とを50:50(質量比)で混合した樹脂(混合後の曲げ弾性率80MPa)100質量部に60質量部の臭素系難燃剤(アルベマール(株)製、商品名SAYTEX8010)および20質量部の三酸化アンチモンを加えた樹脂組成物を用いたこと以外は実施例1と同様にしてフラットケーブルを作製し、一連の評価を行った。以上の結果を表1に示す。
2 アンカーコート層
3 第一の樹脂層
4 難燃樹脂層
5 第二の樹脂層
6 絶縁フィルム
7 導体
Claims (6)
- 樹脂フィルム、アンカーコート層、難燃樹脂層がこの順に積層された絶縁フィルムであって、前記難燃樹脂層は、JIS K7171に準拠して測定された曲げ弾性率が100MPa以上900MPa未満であるポリプロピレン樹脂100質量部に対して難燃付与剤を60質量部以上240質量部以下含有する樹脂組成物からなることを特徴とする、絶縁フィルム。
- 前記アンカーコート層と前記難燃樹脂層の間に第一の樹脂層を有する、請求項1に記載の絶縁フィルム。
- さらに、前記難燃樹脂層上に第二の樹脂層を有する、請求項1又は2に記載の絶縁フィルム。
- 前記第二の樹脂層が酸変性ポリプロピレン樹脂を主成分とすることを特徴とする、請求項3に記載の絶縁フィルム。
- 前記第一の樹脂層及び前記第二の樹脂層の厚みが、それぞれ1μm以上10μm以下である、請求項2~4のいずれか1項に記載の絶縁フィルム。
- 請求項1~5のいずれか1項に記載の絶縁フィルムを被覆材として用いたフラットケーブル。
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CN201080002844XA CN102171773A (zh) | 2009-07-31 | 2010-07-22 | 绝缘膜和使用该绝缘膜的扁平电缆 |
US13/132,047 US20110236662A1 (en) | 2009-07-31 | 2010-07-22 | Insulating film and flat cable using the same |
DE112010000016T DE112010000016T5 (de) | 2009-07-31 | 2010-07-22 | Isolierfilm und Flachkabel, das diesen verwendet |
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- 2010-07-22 JP JP2011503288A patent/JP5578446B2/ja active Active
- 2010-07-22 CN CN201080002844XA patent/CN102171773A/zh active Pending
- 2010-07-22 US US13/132,047 patent/US20110236662A1/en not_active Abandoned
- 2010-07-22 WO PCT/JP2010/062329 patent/WO2011013566A1/ja active Application Filing
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013187346A1 (ja) * | 2012-06-15 | 2013-12-19 | 住友電気工業株式会社 | フラットケーブル用の絶縁フィルム及びフラットケーブル |
CN103650068A (zh) * | 2012-06-15 | 2014-03-19 | 住友电气工业株式会社 | 扁平电缆用绝缘膜以及扁平电缆 |
JP5626482B2 (ja) * | 2012-06-15 | 2014-11-19 | 住友電気工業株式会社 | フラットケーブル用の絶縁フィルム及びフラットケーブル |
CN103650068B (zh) * | 2012-06-15 | 2017-09-08 | 住友电气工业株式会社 | 扁平电缆用绝缘膜以及扁平电缆 |
WO2015156070A1 (ja) * | 2014-04-07 | 2015-10-15 | 住友電気工業株式会社 | 高速伝送フレキシブルフラットケーブル用多層樹脂シート及び高速伝送フレキシブルフラットケーブル |
JP2015201312A (ja) * | 2014-04-07 | 2015-11-12 | 住友電気工業株式会社 | 高速伝送フレキシブルフラットケーブル用多層樹脂シート及び高速伝送フレキシブルフラットケーブル |
Also Published As
Publication number | Publication date |
---|---|
DE112010000016T5 (de) | 2011-07-07 |
CN102171773A (zh) | 2011-08-31 |
JPWO2011013566A1 (ja) | 2013-01-07 |
JP5578446B2 (ja) | 2014-08-27 |
US20110236662A1 (en) | 2011-09-29 |
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