CN105190788A - Multilayer resin sheet for high-speed transmission flexible flat cable, and high-speed transmission flexible cable - Google Patents
Multilayer resin sheet for high-speed transmission flexible flat cable, and high-speed transmission flexible cable Download PDFInfo
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- CN105190788A CN105190788A CN201580000718.3A CN201580000718A CN105190788A CN 105190788 A CN105190788 A CN 105190788A CN 201580000718 A CN201580000718 A CN 201580000718A CN 105190788 A CN105190788 A CN 105190788A
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- flexible flat
- speed transfer
- conductor
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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
- H01B7/08—Flat or ribbon cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/012—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing wire harnesses
- H01B13/01254—Flat-harness manufacturing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators 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
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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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
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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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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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
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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
Abstract
The present invention addresses the problem of providing a multilayer resin sheet for a high-speed transmission flexible flat cable, the multilayer resin sheet being capable of forming a high-speed transmission flexible flat cable having a desired characteristic impedance and a low dielectric loss. The present invention is a multilayer resin sheet for a high-speed transmission flexible flat cable laminated between a conductor layer installed in a predetermined pattern and a shield layer laminated on at least one of the outer surface sides of the conductor layer, wherein the multilayer resin sheet for a high-speed transmission flexible cable is provided with: a base film; a flame retardant layer laminated on the inner surface side of the base film, the flame retardant layer containing a flame retardant; and a conductor-surrounding layer laminated on the inner surface side of the flame retardant layer, no flame retardant being contained in the conductor-surrounding layer. The flame retardant layer preferably has an average thickness of 10-300 [mu]m. The flame retardant layer preferably has an average thickness of 25%-90% of the overall average thickness.
Description
Technical field
The present invention relates to the multi-layer resinous sheet material of high-speed transfer flexible flat cable and high-speed transfer flexible flat cable.
Background technology
As the electric wire of e-machine inside distribution, employ Multi-core flat flexible flat cable.This flexible flat cable by being clipped in side by side between 2 insulative resin sheet materials by many tape conductors, and makes its integration by pressurized, heated operations such as heat lamination operations, thus manufactures.
Particularly in digital equipment etc., in order to transmission of digital signals employs flexible flat cable.When transmission of digital signals, preferably blocking is from the electromagnetic noise of outside.So, be frequently used in the flexible flat cable of the conductive screen of outside lamination of resin sheet.In addition, in order to correctly transmitting high-frequency signal, integration characteristic impedance between loop etc. and flexible flat cable is needed.
For this reason, proposing by being that to insert with polyolefin between the insulative resin sheet material of main component and screen be the low-dielectric constant layer of main component with polyester, increasing the characteristic impedance (see JP 2008-047505 publication) between conductor and screen.
In addition, also proposed and be engaged in the cement layers of the Foamex on conductor by lamination on the film of insulating resin, thus the flexible flat cable increasing characteristic impedance is with resin sheet (insulating tape) (JP 2008-251261 publication).
Prior art document
Patent documentation
Patent documentation 1: JP 2008-047505 publication
Patent documentation 2: JP 2008-251261 publication
Summary of the invention
The problem that invention will solve
Because flexible flat cable requires anti-flammability, therefore flat cable resin sheet needs to comprise fire retardant.For this reason, in the formation of the conventional flex flat cable resin sheet such as disclosed in JP 2008-047505 publication, because the resin be configured at around conductor contains fire proofing, therefore fully can not reduce dielectric constant, thus can dielectric loss be produced when transmitting high-frequency signal.
In addition, in the formation of JP 2008-251261 publication, the bubble of the resin near conductor due to when thermo-compressed when flat cable is formed or flat cable use bending and broken, thus the dielectric constant of resin near conductor changes, and therefore not easily adjusts the characteristic impedance of flat cable.
The present invention makes based on above-mentioned situation, its problem is, provides a kind of and has required characteristic impedance and can form the multi-layer resinous sheet material of high-speed transfer flexible flat cable and the high-speed transfer flexible flat cable of the few high-speed transfer flexible flat cable of dielectric loss.
The means of dealing with problems
For to solve the problem and the invention made is, the multi-layer resinous sheet material of a kind of high-speed transfer flexible flat cable, its lamination in the conductor layer arranged with predetermined pattern and lamination between the screen of at least one exterior side of this conductor layer, this high-speed transfer flexible flat cable with multi-layer resinous sheet material have basement membrane, lamination in the inner face side of this basement membrane and the flame-retardant layer containing fire retardant and lamination this flame-retardant layer inner face side and not containing the conductor surrounding layer of fire retardant.
The effect of invention
At high-speed transfer flexible flat cable of the present invention with in multi-layer resinous sheet material, due to the dielectric constant of the conductor surrounding layer around conductor layer and dielectric loss tangent low and constant, therefore can form the high-speed transfer flexible flat cable with desirable characteristics impedance, and the dielectric loss of high-speed transfer flexible flat cable can be reduced.
Brief Description Of Drawings
[Fig. 1] Fig. 1 is the schematic sectional view that the multi-layer resinous sheet material of the high-speed transfer flexible flat cable of one embodiment of the invention is shown.
[Fig. 2] Fig. 2 is the schematic sectional view of the high-speed transfer flexible flat cable of the multi-layer resinous sheet material of high-speed transfer flexible flat cable with Fig. 1.
[Fig. 3] Fig. 3 is the schematic sectional view of the high-speed transfer flexible flat cable of the embodiment different from Fig. 2.
Embodiment
[explanations of embodiment of the present invention]
The present invention relates to the multi-layer resinous sheet material of a kind of high-speed transfer flexible flat cable, its lamination in the conductor layer arranged with predetermined pattern and lamination between the screen of at least one exterior side of this conductor layer, this high-speed transfer flexible flat cable with multi-layer resinous sheet material have basement membrane, lamination in the inner face side of this basement membrane and the flame-retardant layer containing fire retardant and lamination this flame-retardant layer inner face side and not containing the conductor surrounding layer of fire retardant.
When at this high-speed transfer flexible flat cable of exterior side lamination of conductor layer with multi-layer resinous sheet material thus when forming high-speed transfer flexible flat cable, because the conductor surrounding layer adjacent with conductor layer does not contain fire retardant, therefore dielectric constant and dielectric loss tangent are roughly homogeneous, easily the characteristic impedance of formed high-speed transfer flexible flat cable can be adjusted to desired value.In addition, at this high-speed transfer flexible flat cable with in multi-layer resinous sheet material, as mentioned above because conductor surrounding layer is not containing fire retardant, therefore the dielectric constant of this layer and dielectric loss tangent little.Thereby, it is possible to shorten the distance between conductor layer and screen, thus high-speed transfer flexible flat cable can be made thinning, when conductor layer transmitting high-frequency signal simultaneously in formed high-speed transfer flexible flat cable, dielectric loss also can not become large.
As the average thickness of above-mentioned flame-retardant layer, be preferably more than 10 μm less than 300 μm.Like this, by the average thickness of flame-retardant layer is set to above-mentioned scope, sufficient anti-flammability and sufficient pliability can be guaranteed.
As the average thickness of above-mentioned flame-retardant layer, be preferably less than more than 25% 90% of overall average thickness.Like this by the average thickness of flame-retardant layer is set to above-mentioned scope, sufficient anti-flammability can be guaranteed, and the abundant thickness of basement membrane and conductor surrounding layer can be guaranteed.
The principal resinous ingredients of above-mentioned basement membrane is PETG or polyphenylene sulfide, and the principal resinous ingredients of above-mentioned flame-retardant layer can be polypropylene.Be set to above-mentioned material by the main component of the resin by basement membrane and flame-retardant layer like this, good processability and economy can be obtained.
May further include the knitting layer of lamination between above-mentioned basement membrane and flame-retardant layer.Like this, by arranging knitting layer, the zygosity of basement membrane and flame-retardant layer can be improved, and can reliability be improved.
Above-mentioned knitting layer is not preferably containing fire retardant.Like this, by mismatching fire retardant in the bonding layer, the characteristic impedance between conductor layer and screen can be reduced further, meanwhile, the zygosity of basement membrane and flame-retardant layer can be improved further.In addition, when by knitting layer extrusion molding, because the peristome at mould does not build up the gas of fire retardant, therefore productivity can be improved.
The principal resinous ingredients of above-mentioned knitting layer can be sour modified polypropene.Like this, by the principal resinous ingredients of knitting layer is set to sour modified polypropene, the zygosity of basement membrane and flame-retardant layer further can be improved.
In addition, the present invention includes a kind of high-speed transfer flexible flat cable, it comprise arrange with predetermined pattern conductor layer, lamination is in the screen of at least one exterior side of this conductor layer and the insulating barrier of lamination between above-mentioned conductor layer and screen, wherein above-mentioned insulating barrier is the multi-layer resinous sheet material of above-mentioned high-speed transfer flexible flat cable, and above-mentioned conductor surrounding layer and conductor layer connect.
In this high-speed transfer flexible flat cable, because the multi-layer resinous sheet material of above-mentioned high-speed transfer flexible flat cable has constant and little dielectric constant, therefore the error of characteristic impedance is little, and dielectric loss during high-frequency signal transmission is few.
The average thickness of the above-mentioned conductor surrounding layer between the predetermined pattern of above-mentioned conductor layer is preferably more than 50% of the average thickness of conductor layer.Like this, by the average thickness of conductor surrounding layer is set to more than above-mentioned lower limit, conductor surrounding layer is filled between the conductor of conductor layer, therefore can reduce dielectric loss further.
The above-mentioned high-speed transfer flexible flat cable flame-retardant layer of multi-layer resinous sheet material is not preferably filled between the predetermined pattern of above-mentioned conductor layer.Thus, the dielectric constant near conductor layer is little, thus can more effectively prevent dielectric loss from becoming large.
Herein, " exterior side " and " inner face side " refers in high-speed transfer flexible flat cable, is called " inner face side " side close to conductor layer, is called " exterior side " its opposition side.In addition, " principal resinous ingredients " refers to the resinous principle that in resinous principle, mass content is maximum, preferably refers to the resinous principle containing more than 50 % by weight in resinous principle.In addition, " flame-retardant layer is filled between the predetermined pattern of conductor layer " refers to that flame-retardant layer is present in the state in the space between the patterned conductor of conductor layer.In addition, " average thickness of the conductor surrounding layer between the predetermined pattern of conductor layer " refers to the average thickness of the conductor surrounding layer between the patterned conductor of conductor layer.
[detailed contents of embodiment of the present invention]
With reference to the accompanying drawings each embodiment of the present invention is described in detail.
[the multi-layer resinous sheet material of high-speed transfer flexible flat cable]
The high-speed transfer flexible flat cable of Fig. 1 comprises with multi-layer resinous sheet material 1: basement membrane 2, lamination in the knitting layer 3 of the inner face of this basement membrane 2, lamination in the inner face of knitting layer 3 and flame-retardant layer 4 containing fire retardant and lamination in this flame-retardant layer 4 inner face and not containing the conductor surrounding layer 5 of fire retardant.
< basement membrane >
As basement membrane 2, using with insulative resin is the film of main component.As the insulative resin of basement membrane 2, such as, can enumerate polyester, polyphenylene sulfide, polyimides etc., wherein, preferably there is polyester or the polyphenylene sulfide of versatility.Herein, main component refers to the composition that mass content is maximum, preferably refers to the composition containing more than 50 quality %.
As polyester, such as, can enumerate PETG, PEN, polybutylene terephthalate (PBT), PBN, PTT, poly-naphthalenedicarboxylic acid propylene glycol ester and cyclohexanedimethanol's dimethyl ester etc.In the polyester, from the angle of electrical characteristics, mechanical property and cost etc., preferred PETG.
About basement membrane 2, in order to improve zygosity, surface treatment can be implemented to inner face.As surface treatment, such as, corona treatment can be enumerated.By carrying out such corona treatment, import hydroxyl, carboxyl isopolarity functional group and impart hydrophily in the inner face side of basement membrane 2.Corona treatment at use polyphenylene sulfide as being effective during insulative resin.Surface treatment can also be undertaken by other methods such as agent treatment.Certainly, the surface treatments such as corona treatment are not limited to the situation of polyphenylene sulfide as insulative resin, can carry out arbitrarily when using other insulative resin.In addition, in order to improve zygosity, known anchor coating agent (ア ン カ ー コ ー ト drug) can be coated with in the inner face side of basement membrane 2.
The length dimension of basement membrane 2 and width dimensions can according to suitably settings such as purposes.As the lower limit of the average thickness of basement membrane 2, preferably 6 μm, more preferably 9 μm, preferably 12 μm further.On the other hand, as the upper limit of the average thickness of basement membrane 2, preferably 75 μm, more preferably 50 μm, preferably 40 μm further.Above-mentioned average thickness is less than above-mentioned in limited time lower, may not guarantee sufficient rigidity.Above-mentioned average thickness exceedes above-mentioned in limited time upper, may not guarantee sufficient flexibility.
< knitting layer >
Knitting layer 3 is containing resinous principle.As the principal resinous ingredients of knitting layer 3, such as, polyolefin can be enumerated.As said polyolefins, such as, can enumerate: between the homopolymers of each alkene such as ethene, propylene, butylene, hexene or these monomers or the copolymer of these monomers and non-olefinic system monomer.As polyolefinic object lesson, the vinylites such as low density polyethylene (LDPE), wire polyethylene (ethene-alpha-olefin copolymer), high density polyethylene (HDPE) can be enumerated, the propylene resin such as polypropylene, ethylene-propylene copolymer, poly-(4-methyl-1-pentene), poly-(1-butylene), ethylene-vinyl acetate copolymer, and the acid modified polyolefin system resin etc. of maleic anhydride modified (process) has been carried out to these.Particularly, as the principal resinous ingredients of knitting layer 3, in order to improve the engaging force of basement membrane 2 and flame-retardant layer 4, preferred acid improved polyalkene, wherein more preferably sour modified polypropene.It should be noted that, resinous principle entirety can be only made up of principal resinous ingredients.
As the lower limit of the average thickness of knitting layer 3, preferably 1 μm, more preferably 2 μm.On the other hand, as the upper limit of the average thickness of knitting layer 3, preferably 50 μm, more preferably 30 μm.
The average thickness of knitting layer is less than above-mentioned in limited time lower, is not easy to be formed uniform layer, may not gives full play to the effect engaging basement membrane 2 and flame-retardant layer 4.The average thickness of knitting layer 3 exceedes above-mentioned in limited time upper, and this high-speed transfer flexible flat cable may be unnecessarily thickening with multi-layer resinous sheet material 1.
Knitting layer 3 can comprise other additive as required, but preferably not containing fire retardant.By making knitting layer 3 not containing fire retardant, the dielectric constant of this high-speed transfer flexible flat cable with multi-layer resinous sheet material 1 near surface can be reduced, and when using this high-speed transfer flexible flat cable to form high-speed transfer flexible flat cable with multi-layer resinous sheet material 1, the characteristic impedance of conductor layer and screen can be reduced.In addition, when by out being formed with flame-retardant layer 4 and conductor surrounding layer 5 co-extrusion by knitting layer 3, because fire retardant does not expose on film surface, therefore can improve the zygosity to basement membrane 2.In addition, owing to not building up the gas of fire retardant in mould openings portion when extrusion molding, therefore productivity can be improved.
< flame-retardant layer >
Flame-retardant layer 4 comprises resinous principle and fire retardant.
(resinous principle)
As the resinous principle of flame-retardant layer 4, such as, polyolefin can be enumerated.As said polyolefins, such as, can enumerate: between the homopolymers of each alkene such as ethene, propylene, butylene, hexene or these monomers or the copolymer of these monomers and non-olefinic system monomer.As polyolefinic object lesson, the vinylites such as low density polyethylene (LDPE), wire polyethylene (ethene-alpha-olefin copolymer), high density polyethylene (HDPE) can be enumerated, the propylene resin such as polypropylene, ethylene-propylene copolymer, poly-(4-methyl-1-pentene), poly-(1-butylene), ethylene-vinyl acetate copolymer, and the acid modified polyolefin system resin etc. of maleic anhydride modified (process) has been carried out to these.Particularly, from the viewpoint of thermal endurance, low-k and cost, preferably use polypropylene as the principal resinous ingredients of flame-retardant layer 4.
(fire retardant)
As fire retardant contained in flame-retardant layer 4, can enumerate metal hydrate flame retardant, halogen-system fire retardant, Sb system fire retardant etc., these can be used alone, or two or more combinationally uses.
As metal hydrate flame retardant, such as, magnesium hydroxide [Mg (OH) can be enumerated
2], aluminium hydroxide [Al (OH)
3], hydrotalcite etc., these can be used alone, or two or more combinationally uses.
As halogen-system fire retardant, such as can enumerate the chlorine based compounds such as acid in chlorinated paraffin wax, haloflex, chlorinated polyphenyl, mirex, the acid of anhydrous HET acid, chlorine (acid of Network ロ Le エ Application De), the halogen-containing organic or inorganic compound of the bromine based compounds such as tetrabromoethane, tetrabromobisphenol A, HBB, decabromodiphenyl oxide, tetrabromophthalic anhydride, poly-dibromobenzene aether, hexabromo cyclodecane, ammonium bromide etc., these can be used alone, or two or more combinationally uses.
As Sb system fire retardant, such as can enumerate antimony trioxide, trichloride antimony, antimony pentaoxide, boric acid antimony, molybdic acid antimony etc., these can be used alone, or two or more combinationally uses.
Relative to resinous principle 100 mass parts of flame-retardant layer 4, the content lower limit of above-mentioned fire retardant is preferably 20 mass parts, is more preferably 40 mass parts.On the other hand, relative to resinous principle 100 mass parts of flame-retardant layer 4, the upper content limit of above-mentioned fire retardant is preferably 200 mass parts, is more preferably 150 mass parts.The content of fire retardant is less than above-mentioned in limited time lower, may not give sufficient anti-flammability.The content of fire retardant exceedes above-mentioned in limited time upper, and the intensity of flame-retardant layer 4 may become insufficient, or cost may be too high.
In order to improve the effect of fire retardant, flame-retardant layer 4 can comprise flame retardant.As flame retardant, such as, antimony oxide etc. can be enumerated.
As the lower limit of the average thickness of flame-retardant layer 4, be preferably 10 μm, be more preferably 20 μm.
On the other hand, as the upper limit of the average thickness of flame-retardant layer 4, be preferably 300 μm, be more preferably 200 μm.The average thickness of flame-retardant layer 4 is less than above-mentioned in limited time lower, may not give the multi-layer resinous sheet material 1 of this high-speed transfer flexible flat cable anti-flammability fully.The average thickness of flame-retardant layer 4 exceedes above-mentioned in limited time upper, and this high-speed transfer flexible flat cable pliability of multi-layer resinous sheet material 1 may become insufficient.
In addition, as the average thickness of flame-retardant layer 4 relative to the lower limit of high-speed transfer flexible flat cable with the ratio of the average thickness of multi-layer resinous sheet material 1 entirety, be preferably 25%, be more preferably 40%.On the other hand, as the upper limit of the ratio of the average thickness of above-mentioned flame-retardant layer 4, be preferably 90%, be more preferably 80%.The ratio of the average thickness of above-mentioned flame-retardant layer 4 is less than above-mentioned in limited time lower, may not give the multi-layer resinous sheet material 1 of this high-speed transfer flexible flat cable anti-flammability fully.The average thickness ratio of above-mentioned flame-retardant layer 4 exceedes above-mentioned in limited time upper, and the dielectric constant in high-speed transfer flexible flat cable near conductor uprises, and dielectric loss may become large.
< conductor surrounding layer >
Conductor surrounding layer 5 take resin as main component, in fact not containing fire retardant.As the resin of the principal resinous ingredients of conductor surrounding layer 5, polyolefin can be enumerated.As said polyolefins, such as, can enumerate: between the homopolymers of each alkene such as ethene, propylene, butylene, hexene or these monomers or the copolymer of these monomers and non-olefinic system monomer.As polyolefinic object lesson, the vinylites such as low density polyethylene (LDPE), wire polyethylene (ethene-alpha-olefin copolymer), high density polyethylene (HDPE) can be enumerated, the propylene resin such as polypropylene, ethylene-propylene copolymer, poly-(4-methyl-1-pentene), poly-(1-butylene), ethylene-vinyl acetate copolymer, and the acid modified polyolefin system resin, epoxy-modified polyolefin, silane-modified polyolefin etc. of maleic anhydride modified (process) have been carried out to these.Particularly, as the main component of conductor surrounding layer 5, from the viewpoint of the zygosity to conductor, low-k and cost, preferred acid improved polyalkene or epoxy-modified polyolefin, wherein more preferably sour modified polypropene and epoxy-modified polyolefin.
As the lower limit of the average thickness of conductor surrounding layer 5, be preferably 1 μm, more preferably 3 μm.
On the other hand, as the upper limit of the average thickness of conductor surrounding layer 5, be preferably 100 μm, more preferably 50 μm.The average thickness of conductor surrounding layer 5 is less than above-mentioned in limited time lower, due to the conductor layer close to fire retardant, may become large at high-speed transfer flexible flat cable dielectric loss.The average thickness of conductor surrounding layer 5 exceedes above-mentioned in limited time upper, and this high-speed transfer flexible flat cable pliability of multi-layer resinous sheet material 1 may become insufficient.
< manufacture method >
This high-speed transfer flexible flat cable manufacture method of multi-layer resinous sheet material 1 comprises the following steps: modulation is respectively used to the operation of the resin combination forming knitting layer 3, flame-retardant layer 4 and conductor surrounding layer 5, utilize each resin combination and the operation that makes the film of formation knitting layer 3, flame-retardant layer 4 and conductor surrounding layer 5 shaping, and the rete forming knitting layer 3, flame-retardant layer 4 and conductor surrounding layer 5 to be amassed on basement membrane 2 and the step of the integration by thermo-compressed.
(resin combination modulation step)
Resin combination for forming knitting layer 3, flame-retardant layer 4 and conductor surrounding layer 5 respectively can be modulated by carrying out mixing with mixing roll to the composition of other compositions such as the resinous principle coordinated and fire retardant.As mixing roll, such as, can enumerate out refining roller (オ ー プ ン ロ ー Le), kneader, twin shaft mixing extruder etc.
(film formation step)
The formation of knitting layer 3, flame-retardant layer 4 and conductor surrounding layer 5 can be undertaken by extrusion by meltings such as T modulus method, blow mouldings.Knitting layer 3, flame-retardant layer 4 and conductor surrounding layer 5 can be shaped to separately independently film, the trilamellar membrane that also can be molded as one by coextrusion.
(thermo-compressed step)
By three films being formed like this or a slice trilamellar membrane lamination on basement membrane 2, make its integration by thermo-compressed, the multi-layer resinous sheet material 1 of this high-speed transfer flexible flat cable can be formed thus.Thermo-compressed (such as) can use the heating laminator, hot press etc. with warm-up mill to carry out.Heating-up temperature (such as) is set to 80 DEG C to about 200 DEG C.
[high-speed transfer flexible flat cable]
The high-speed transfer flexible flat cable of Fig. 2 has insulating barrier 8 in the inside of conductor layer 6 of the conductor layer 6, the insulating barrier 7 of lamination in the surface of this conductor layer 6 and the lamination that arrange with bar (ス ト ラ イ プ) shape pattern and lamination in the screen 9 of the outside of the insulating barrier 7 of table side.
As the average thickness of this high-speed transfer flexible flat cable, such as, can be set to more than 200 μm less than 900 μm.
< conductor layer >
Conductor layer 6 is formed as stratiform, has the strip pattern of multiple band pattern conductor 6a configuration parallel to each other.Conductor layer 6 (such as) is made up of conductive metal such as copper, zinc-plated soft copper, nickel plating soft coppers.Conductor layer 6 is preferably formed by the conductive metal of foil-like.
As the lower limit of the average thickness of conductor layer 6, be preferably 10 μm, more preferably 20 μm.
On the other hand, as the upper limit of the average thickness of conductor layer 6, be preferably 100 μm, more preferably 50 μm.The average thickness of conductor layer 6 is less than above-mentioned in limited time lower, and the mechanical strength of conductor layer 6 may be not enough and occur disrumpent feelings.The average thickness of conductor layer 6 exceedes above-mentioned in limited time upper, and this high-speed transfer flexible flat cable may be unnecessarily thickening, or pliability may be insufficient.
As the average thickness of high-speed transfer flexible flat cable with the conductor surrounding layer 5 between the patterned conductor 6a of the conductor layer 6 of multi-layer resinous sheet material 1, be preferably more than 50% of the average thickness of above-mentioned conductor layer 6, be more preferably more than 70%.When the average thickness of conductor surrounding layer 5 is less than above-mentioned in limited time lower, between the patterned conductor 6a that only conductor surrounding layer 5 can not be imbedded conductor layer 6, flame-retardant layer 4 containing fire retardant also enters between patterned conductor 6a, therefore the dielectric constant between patterned conductor 6a uprises, and the loss when high-frequency signal of patterned conductor 6a transmits may become large.
< insulating barrier >
Insulating barrier 7,8 is formed with multi-layer resinous sheet material 1 by the high-speed transfer flexible flat cable of Fig. 1 respectively.The mode be connected with conductor layer 6 with conductor surrounding layer 5 makes multi-layer resinous sheet material 1 lamination of these two high-speed transfer flexible flat cables in the both sides of conductor layer 6, and carries out thermo-compressed.By this thermo-compressed, two high-speed transfer flexible flat cable conductor surrounding layers 5 of multi-layer resinous sheet material 1 are filled between patterned conductor 6a, fused with one another and integrated.In this way, forming two high-speed transfer flexible flat cables of insulating barrier 7,8 can be identical with multi-layer resinous sheet material 1, also can the material of each layer and thickness different from each other.
< screen >
As long as screen 9 is for reducing electromagnetic interference and noise and be screen conductive material being formed as stratiform.The commercially available shielding of can fitting of such screen 9 (such as) brings formation.
As the mask tape forming screen 9, such as can use the mask tape formed in the following manner: the insulative resin films 10 such as 9 μm of thick pet resins the conductive metal such as inner face (such as) depositing silver thus form metal deposition layer 11, form conductivity knitting layer 12 at the inner face (such as) of metal deposition layer 11 with conductivity cements such as the thickness silver coating slurries of 20 μm further.Instead, screen 9 can be formed by applying conductive coating or jointing metal paper tinsel.
< manufacture method >
About the manufacture method of this high-speed transfer flexible flat cable, can be manufactured by the manufacture method with following steps: on the two sides of conductor layer 6, engage this high-speed transfer flexible flat cable with multi-layer resinous sheet material 1 and form the step of insulating barrier 7,8, and the laminating mask tape, outside of insulating barrier 7 in table side thus form the step of screen 9.
(insulating barrier forming step)
In insulating barrier forming step, respectively at the surface of conductor layer 6 and the multi-layer resinous sheet material 1 of this high-speed transfer flexible flat cable of the inside lamination, and by this laminate thermo-compressed.Thermo-compressed is passed through with multi-layer resinous sheet material 1 by this high-speed transfer flexible flat cable of mode lamination of being connected with conductor layer 6 with conductor surrounding layer 5, make conductor surrounding layer 5 be filled between the patterned conductor 6a of conductor layer 6, this high-speed transfer flexible flat cable simultaneously in table is fused with one another with the conductor surrounding layer 5 of multi-layer resinous sheet material 1.Thus, make the insulating barrier 8 of the insulating barrier 7 of face side and side, the inside integrated with conductor layer 6.Thermo-compressed (such as) can use the heating laminator, hot press etc. with warm-up mill to carry out.Heating-up temperature is set to (such as) 80 DEG C to about 200 DEG C.
(screen forming step)
In screen forming step, by the laminating mask tape, outside of the insulating barrier 7 in face side, thus form screen 9.
[advantage]
When using this high-speed transfer flexible flat cable to form high-speed transfer flexible flat cable with multi-layer resinous sheet material 1, flame-retardant layer 4 and conductor surrounding layer 5 can lamination in this high-speed transfer flexible flat cable by the screen 9 of the exterior side of multi-layer resinous sheet material 1 and lamination between the conductor layer 6 of inner side, form the insulating barrier 7 that dielectric constant is little.Therefore, when not other film of lamination etc., the characteristic impedance of high-speed transfer flexible flat cable can be set to required value.
In addition, employing in the high-speed transfer flexible flat cable of this high-speed transfer flexible flat cable with multi-layer resinous sheet material 1, owing to being configured with dielectric constant conductor surrounding layer 5 little especially around conductor layer 6, the dielectric loss therefore during transmitting high-frequency signal is little.
[different embodiments of high-speed transfer flexible flat cable]
The high-speed transfer flexible flat cable of Fig. 3 has conductor layer 6, lamination insulating barrier 7a, 8a in the surface of this conductor layer 6 and the inside and lamination in the screen 9 of the outside of the insulating barrier 7a of table side.In the high-speed transfer flexible flat cable of Fig. 3, conductor layer 6 is identical with screen 9 with the conductor layer 6 of the high-speed transfer flexible flat cable of Fig. 2 with screen 9, and therefore with same-sign, also the description thereof will be omitted.
Insulating barrier 7a, 8a are formed by the multi-layer resinous sheet material 1a of high-speed transfer flexible flat cable.
High-speed transfer flexible flat cable with multi-layer resinous sheet material 1a have basement membrane 2, lamination in the knitting layer 3 of the inner face of this basement membrane 2, lamination in the inner face of this knitting layer 3 and flame-retardant layer 4a containing fire retardant, lamination in this flame-retardant layer 4a inner face and not containing the conductor surrounding layer 5a of fire retardant.
This high-speed transfer flexible flat cable is identical with knitting layer 3 with the basement membrane 2 of multi-layer resinous sheet material 1 with the high-speed transfer flexible flat cable of Fig. 1 with the formation of knitting layer 3 with the basement membrane 2 of multi-layer resinous sheet material 1a, and therefore with identical symbol, also the description thereof will be omitted.In addition, high-speed transfer flexible flat cable with the flame-retardant layer 4a of multi-layer resinous sheet material 1a and conductor surrounding layer 5a except thickness, identical with conductor surrounding layer 5 with the flame-retardant layer 4 of multi-layer resinous sheet material 1 with the high-speed transfer flexible flat cable of Fig. 1.
In the high-speed transfer flexible flat cable of Fig. 3, to the high-speed transfer flexible flat cable before conductor layer 6 lamination with the average thickness of the conductor surrounding layer 5a in multi-layer resinous sheet material 1a average thickness 50% also little than conductor layer 6, conductor surrounding layer 5a can not be filled in the whole spaces between the predetermined pattern of conductor layer 6.That is, the average thickness of the conductor surrounding layer 5a between the patterned conductor 6a in the high-speed transfer flexible flat cable of Fig. 3 is than average thickness 50% also little of conductor layer 6.Like this, even when only lamelliform part (its directly contact with patterned conductor 6a and produce dielectric loss) is containing fire retardant, also dielectric loss can be reduced as the high-speed transfer flexible flat cable with Fig. 1 with multi-layer resinous sheet material 1.
[other embodiment]
It is illustrative rather than restrictive that embodiment of disclosure should be considered to be in whole aspect.Scope of the present invention is not limited by forming of above-mentioned embodiment, but by the Range Representation of claim, is intended to the whole changes comprised in the meaning identical with the scope of claim and scope.
Such as, at this high-speed transfer flexible flat cable with in multi-layer resinous sheet material, knitting layer can be omitted.
This high-speed transfer flexible flat cable not only only can have screen an outside, can also have screen outside both sides.
About the manufacture method of this high-speed transfer flexible flat cable with multi-layer resinous sheet material, can also by being dissolved in solvent by forming the resin combination of knitting layer, flame-retardant layer and conductor surrounding layer, coat the inner face of basement membrane successively and dry and formed.
Embodiment
Based on embodiment, the present invention will be described below.It should be noted that, the invention is not restricted to these embodiments, can be out of shape these embodiments based on purport of the present invention and change, these are not got rid of from scope of the present invention.
The multi-layer resinous sheet material > of < high-speed transfer flexible flat cable
In order to verify the present invention, manufacture the multi-layer resinous sheet material No.1 to 10 of high-speed transfer flexible flat cable.
First, in order to form the knitting layer of the multi-layer resinous sheet material No.1 to 10 of high-speed transfer flexible flat cable, flame-retardant layer and conductor surrounding layer, following materials A has been modulated to F.
(materials A)
Antioxidant 1 mass parts is added in sour modified polypropene 100 mass parts.
(material B)
Fire retardant 40 mass parts, flame retardant 10 mass parts and antioxidant 1 mass parts is added in sour modified polypropene 100 mass parts.
(material C)
Fire retardant 110 mass parts, flame retardant 30 mass parts and antioxidant 1 mass parts is added in polypropylene 100 mass parts.
(material D)
Fire retardant 80 mass parts, flame retardant 10 mass parts and antioxidant 1 mass parts is added in polypropylene 100 mass parts.
(material E)
Antioxidant 1 mass parts is added in polypropylene 100 mass parts.
(material F)
Antioxidant 1 mass parts is added in resin combination 100 mass parts be made up of epoxy-modified polyolefin 90 mass parts and olefin-based elastomer 10 mass parts.
As above-mentioned sour modified polypropene, employ " the ア ド マ ー QE060 " of Mitsui Chemicals, Inc, as above-mentioned polypropylene, employ " WELNEXRFG4VA " of Japanese Port リ プ ロ Co., Ltd., as epoxy-modified polyolefin, employ " the ボ Application De フ ァ ー ス ト E " of Sumitomo Chemical Co, as olefin-based elastomer, employ " the ダ イ Na ロ Application 6200P " of JSR Corp., as above-mentioned fire retardant, employ " SAYTEX8010 " of ア Le ベ マ ー Le Co., Ltd., as above-mentioned flame retardant, employ antimony oxide, as above-mentioned antioxidant, employ " the イ Le ガ ノ ッ Network ス 1076 " of BASF AG.
The material selected respectively from above-mentioned material A to F is formed knitting layer, flame-retardant layer and conductor surrounding layer by using the coextrusion of multilayer T mould simultaneously, thus obtains the trilamellar membrane of these layer of integration.And, by being coated with anchor coating agent and above-mentioned trilamellar membrane of fitting on basement membrane, obtain the multi-layer resinous sheet material No.1 to 10 of high-speed transfer flexible flat cable.
As above-mentioned basement membrane, employ the film that average thickness is the PETG of 12 μm.In addition, as anchor coating agent, employ the material " the タ ケ ラ ッ Network A-310 " and " タ ケ ネ ー ト A-3 " of Mitsui Chemicals, Inc mixed.
The high-speed transfer flexible flat cable knitting layer of multi-layer resinous sheet material No.1 to 10, flame-retardant layer and conductor surrounding layer employ the material shown in table 1 respectively, and in the mode becoming the average thickness shown in table 1 to regulate extrusion capacity.
[table 1]
< high-speed transfer flexible flat cable >
And, as shown in table 2, use one or both in multi-layer resinous sheet material No.1 to 10 of above-mentioned high-speed transfer flexible flat cable to form insulating barrier, thus manufacture high-speed transfer flexible flat cable No.11 to 18.It should be noted that, about high-speed transfer flexible flat cable No.11 to 18, the desired value of characteristic impedance is set to 100 Ω and the thickness etc. of selected each layer.
As conductor layer, employ the rolled copper foil of thickness 35 μm, width 0.3mm.Above-mentioned high-speed transfer flexible flat cable is configured at the surface of metal forming and the inside with multi-layer resinous sheet material and carries out thermo-compressed by the mode be connected with conductor layer with conductor surrounding layer.In thermo-compressed, employ the hot-rolling that temperature is 140 DEG C to 160 DEG C.By this thermo-compressed, in the gap between the conductor making the conductor surrounding layer of the multi-layer resinous sheet material of the high-speed transfer flexible flat cable of surface and the inside soften to be filled to conductor layer, and it is made to engage each other.
Testing vertical flammability is carried out to the high-speed transfer flexible flat cable No.11 to 18 obtained like this.Herein, " testing vertical flammability " represents the testing vertical flammability specified in UL (American insurance dealer safety test institute) specification.This result of the test is shown in Table 2 in the lump.About this result of the test, the cable meeting the testing vertical flammability benchmark specified in the VW-1 of UL is expressed as well (G), the cable not meeting said reference is expressed as bad (NG).
Next, for high-speed transfer flexible flat cable No.11 to 15,17 and 18, in the laminating mask tape, outside of the insulating barrier of face side, for high-speed transfer flexible flat cable No.16, in the laminating mask tape, outside of insulating barrier of surface and inside two sides.
As above-mentioned mask tape, be used in inner face side depositing silver that thickness is the PETG film of 9 μm and with the mask tape of 20 μm of thickness silver coating slurries on this deposition of silver face.
Measure the characteristic impedance be so fitted with between the conductor layer of the high-speed transfer flexible flat cable No.11 to 18 of mask tape and the screen of face side, will table 2 be the results are shown in.Herein, characteristic impedance is the value using " the S パ ラ メ ー タ テ ス ト セ ッ ト N4419B " of ア ジ レ Application ト テ Network ノ ロ ジ ー Co., Ltd. " ネ ッ ト ワ ー Network ア Na ラ イ ザ E8362B " and ア ジ レ Application ト テ Network ノ ロ ジ ー Co., Ltd. to measure.
[table 2]
As implied above, in these high-speed transfer flexible flat cables, except employing the high-speed transfer flexible flat cable No.17 of the multi-layer resinous sheet material No.9 of the little high-speed transfer flexible flat cable of flame-retardant layer thickness, all there is the anti-flammability of the VW-1 being equivalent to UL specification.It should be noted that, the VW-1 test of above-mentioned UL specification is carried out under the state of mask tape of not fitting, and therefore above-mentioned result of the test is different from the anti-flammability under real use state (state of mask tape of having fitted).
About the error of characteristic impedance, the high-speed transfer flexible flat cable of No.11 to 18, all within 5%, is permissible range.
In addition, the high-speed transfer flexible flat cable of these No.11 to 18 all has not containing the conductor surrounding layer of fire retardant around conductor layer, and the dielectric loss therefore during transmitting high-frequency signal is little.Such as, the loss of high-speed transfer flexible flat cable under the high-frequency signal of 8GHz of No.15 is about 12dB, compared with the loss (17 to 25dB) of conventional flex flat cable, is low-down loss.
Symbol description
1, the multi-layer resinous sheet material of 1a high-speed transfer flexible flat cable
2 basement membranes
3 knitting layers
4,4a flame-retardant layer
5,5a conductor surrounding layer
6 conductor layers
6a patterned conductor
7,7a, 8,8a insulating barrier
9 screens (mask tape)
10 resin moldings
11 metal deposition layers
12 conductivity cement layers
Claims (10)
1. the multi-layer resinous sheet material of high-speed transfer flexible flat cable, its lamination in the conductor layer arranged with predetermined pattern and lamination between the screen of at least one exterior side of this conductor layer,
The multi-layer resinous sheet material of described high-speed transfer flexible flat cable has
Basement membrane,
Lamination this basement membrane inner face side and containing the flame-retardant layer of fire retardant, and
Lamination this flame-retardant layer inner face side and not containing the conductor surrounding layer of fire retardant.
2. the multi-layer resinous sheet material of high-speed transfer flexible flat cable according to claim 1, the average thickness of wherein said flame-retardant layer is more than 10 μm less than 300 μm.
3. the multi-layer resinous sheet material of high-speed transfer flexible flat cable according to claim 1 and 2, the average thickness of wherein said flame-retardant layer is less than more than 25% 90% of ensemble average thickness.
4. the multi-layer resinous sheet material of high-speed transfer flexible flat cable according to claim 1,2 or 3, the principal resinous ingredients of wherein said basement membrane is PETG or polyphenylene sulfide, and the principal resinous ingredients of described flame-retardant layer is polypropylene.
5. the multi-layer resinous sheet material of high-speed transfer flexible flat cable according to any one of claim 1 to 4, also has the knitting layer of lamination between described basement membrane and described flame-retardant layer.
6. the multi-layer resinous sheet material of high-speed transfer flexible flat cable according to claim 5, wherein said knitting layer is not containing fire retardant.
7. the multi-layer resinous sheet material of high-speed transfer flexible flat cable according to claim 5 or 6, the principal resinous ingredients of wherein said knitting layer is sour modified polypropene.
8. a high-speed transfer flexible flat cable, has
With the conductor layer that predetermined pattern arranges,
Lamination in the screen of at least one exterior side of this conductor layer, and
The insulating barrier of lamination between described conductor layer and described screen,
Wherein said insulating barrier is the multi-layer resinous sheet material of high-speed transfer flexible flat cable according to claim 1, and described conductor surrounding layer connects with conductor layer.
9. high-speed transfer flexible flat cable according to claim 8, the average thickness of the described conductor surrounding layer between the predetermined pattern of wherein said conductor layer is more than 50% of the average thickness of conductor layer.
10. high-speed transfer flexible flat cable according to claim 9, the wherein said high-speed transfer flexible flat cable flame-retardant layer of multi-layer resinous sheet material is not filled between the predetermined pattern of described conductor layer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014078917A JP6379606B2 (en) | 2014-04-07 | 2014-04-07 | High-speed transmission flexible flat cable |
| JP2014-078917 | 2014-04-07 | ||
| PCT/JP2015/056919 WO2015156070A1 (en) | 2014-04-07 | 2015-03-10 | Multilayer resin sheet for high-speed transmission flexible flat cable, and high-speed transmission flexible cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105190788A true CN105190788A (en) | 2015-12-23 |
| CN105190788B CN105190788B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201580000718.3A Active CN105190788B (en) | 2014-04-07 | 2015-03-10 | Multilayer resin sheet for high-speed transmission flexible flat cable, and high-speed transmission flexible cable |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6379606B2 (en) |
| KR (2) | KR20170141817A (en) |
| CN (1) | CN105190788B (en) |
| TW (1) | TWI653144B (en) |
| WO (1) | WO2015156070A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111869028A (en) * | 2018-03-22 | 2020-10-30 | 株式会社自动网络技术研究所 | Connection structure of flexible flat cable |
| CN112102988A (en) * | 2016-07-25 | 2020-12-18 | 尹熙畯 | Flexible flat cable |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017071702A1 (en) * | 2015-10-27 | 2017-05-04 | Schaeffler Technologies AG & Co. KG | Bearing assembly with incorporated electric line for providing multiple operating voltages |
| JP6599551B2 (en) | 2016-09-01 | 2019-10-30 | リケンテクノス株式会社 | Resin composition and laminate using the same |
| KR102562430B1 (en) * | 2017-02-28 | 2023-08-01 | 스미토모 덴키 고교 가부시키가이샤 | shielded flat cable |
| TWI727838B (en) | 2020-06-24 | 2021-05-11 | 貝爾威勒電子股份有限公司 | Cable structure |
| JPWO2022130895A1 (en) * | 2020-12-15 | 2022-06-23 |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201545882A (en) | 2015-12-16 |
| CN105190788B (en) | 2017-05-10 |
| KR20150133260A (en) | 2015-11-27 |
| JP6379606B2 (en) | 2018-08-29 |
| JP2015201312A (en) | 2015-11-12 |
| KR20170141817A (en) | 2017-12-26 |
| WO2015156070A1 (en) | 2015-10-15 |
| TWI653144B (en) | 2019-03-11 |
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