CN1762032A - The platypelloid type capacitor is with polypropylene film with by its platypelloid type capacitor of forming - Google Patents
The platypelloid type capacitor is with polypropylene film with by its platypelloid type capacitor of forming Download PDFInfo
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- CN1762032A CN1762032A CN 200480007305 CN200480007305A CN1762032A CN 1762032 A CN1762032 A CN 1762032A CN 200480007305 CN200480007305 CN 200480007305 CN 200480007305 A CN200480007305 A CN 200480007305A CN 1762032 A CN1762032 A CN 1762032A
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Abstract
The platypelloid type capacitor shrinks size changing rate with Δ d (thickness of the thickness-mass method of micron method) and the 3% following length direction that polypropylene film has 0.05～0.2 μ m, perhaps the platypelloid type capacitor has the Δ d of 0.1～0.3 μ m and the length direction F5 value of 50MPa at least with polypropylene film, and the platypelloid type capacitor of being made up of them.Can obtain film outstanding in the disposal in the coiling process of capacitor element, and can obtain on the voltage-resistent characteristics such as self-reparability outstanding, small-sized big capacity and be suitable for the platypelloid type capacitor of the use under the high voltage-rated.
Description
Technical field
The present invention relates to the platypelloid type capacitor with polypropylene film with by its platypelloid type capacitor of forming, particularly, relate to small-sized big capacity, be the platypelloid type capacitor of purpose and the polypropylene film of this platypelloid type capacitor formation usefulness with using under the high voltage-rated.
Background technology
Polypropylene film is because electrical characteristics such as voltage-resistent characteristic or dielectric absorption are more outstanding than other plastic films, so be widely used in electric purposes.Wherein remarkable as the growth of the needs of the dielectric material in the capacitor.Recently, along with various electric equipment inverterizations, and then, wish the filming of polypropylene film more along with the small-sized high capacity of capacitor makes progress.
But because polypropylene film is the material that lacks rigidity being used among the plastic film of capacitor, so along with the attenuate of thickness, the raising of its property disposed or processability requires increase.Therefore, propose in order to be used to improve all motions of property disposed or processability.
For example, the confficient of static friction that has proposed under non-evaporation face and the metallic plate of implementing chromium plating 80 ℃ after implementing metal evaporation on the face of polypropylene film is below 0.8, and melting point is that content of additive below 130 ℃ is the following capacitor evaporation polypropylene films of 4000 ppm by weight, is known (for example the spy opens flat 2-170406 communique) in order to the situation of raising evaporation processability.
In addition, implement on non-evaporation face and soak tension force 33 and be the surface treatment below the dyne/cm, the method for giving high-speed wind-up is known (for example the spy opens clear 58-16415 communique).And then, propose the F5 value and be 11.0kgf/mm
2More than, the full granule content in the film is the polypropylene film of 0.25～0.60 weight %, is known (for example the spy opens the 2000-204177 communique) in order to batching property of raising, broken up situation.
In addition, by the difference Δ d of the film thickness of the film thickness of micron method and mass method is taken as 0.01～0.5 μ m, the proof voltage that suppresses film reduces, the method for insulation defect is known (for example the spy opens flat 10-156938 communique).And then, proposed the ratio MMV/WMV of micron thickness (MMV) and weight average thickness (WMV) is taken as 1.2～1.6 the motion (for example the spy opens the 2001-118430 communique) of the interflow of the insulating oil when improving the rewinding of film.
But, drive the capacitor described in the flat 2-170406 communique with in the evaporation polypropylene film the spy, batching dislocation in the coiling process of capacitor element, to suppress effect little, is inadequate.In addition, open in the method described in the clear 58-16415 communique the spy, the inhibition effect of the wrinkle in the element coiling process of capacitor element is inadequate, is significant for the thin film below the thickness 4 μ m particularly.And then it is polyester film that the spy opens the film described in the 2000-204177 communique, thus when applying to polypropylene film because its polymer property difference is difficult.
In addition, in any motion, on the voltage-resistent characteristic as one of final purpose,, be inadequate keeping aspect the outstanding voltage-resistent characteristic particularly about the thin polypropylene film below the 4 μ m.
In addition, opening in the method described in the flat 10-156936 communique the spy, particularly in the flattening suppression process of the capacitor element of the thin film below thickness 4 μ m wrinkle takes place, is inadequate aspect voltage-resistent characteristic.
And then, to open in the method described in the 2001-118430 communique the spy, the voidage between thin layer is excessive, and the capacitor of not impregnation insulating oil is reduced voltage-resistent characteristic greatly.
Summary of the invention
Therefore, the objective of the invention is to overcome the shortcoming of this prior art, provide a kind of in the coiling process of capacitor element or flattening suppression process thereafter, even for example the following thin polypropylene film of 4 μ m also can suppress wrinkle and dislocation, for example be suitable for the making of above big capacity of 500 μ F and small-sized platypelloid type capacitor, voltage-resistent characteristic in addition, particularly keeping is the self-reparability of one of the feature as the platypelloid type capacitor, and being suitable for as dc rated voltage is use more than the 700V, and the platypelloid type capacitor is with polypropylene film and the platypelloid type capacitor be made up of it.
To achieve these goals, platypelloid type capacitor according to the present invention with the feature of polypropylene film is, the difference Δ d of the thickness of the micron method of film and the thickness of mass method is 0.05～0.2 μ m, and the contraction size changing rate of length direction is below 3%.
In addition, another kind of platypelloid type capacitor according to the present invention with the feature of polypropylene film is, the difference Δ d of the thickness of the micron method of film and the thickness of mass method is 0.1～0.3 μ m, and the F5 value of length direction is more than the 50MPa.
In addition, the present invention also provides a kind of platypelloid type capacitor metallized polypropylene film, it is characterized in that, above-mentioned this platypelloid type capacitor with the single face of polypropylene film or two sides on evaporation metal is arranged.
And then, according to platypelloid type capacitor of the present invention, adopted above-mentioned this platypelloid type capacitor polypropylene film at least a portion.In addition, according to platypelloid type capacitor of the present invention, adopted above-mentioned this platypelloid type capacitor metallized polypropylene film at least a portion.
Description of drawings
Fig. 1 is that expression comprises and is not parallel to the approximate vertical view of platypelloid type capacitor with one of the pattern at the edge of the length direction of metallized polypropylene film example.
Fig. 2 is that expression comprises and is not parallel to the approximate vertical view of platypelloid type capacitor with another example of the pattern at the edge of the length direction of metallized polypropylene film.
(explanation of label)
1: metalized portion (black part)
2: marginal portion (white portion)
Embodiment
Below, just the present invention describes with preferred implementation.
As a kind of mode of platypelloid type capacitor according to the present invention with polypropylene film, the Δ d of film is necessary for more than the 0.05 μ m, below the 0.2 μ m.Δ d is the difference that deducts the thickness (WMV) of mass method from the thickness of micron method (MMV), the rough surface that means film if this value is big, voidage between the thin layer when being rolled into capacitor element strengthens, if little then mean the surface smoothing of film, the voidage between the thin layer when being rolled into capacitor element reduces.
Use in the polypropylene film at platypelloid type capacitor according to the present invention, because film is difficult to slide during the Δ d less than 0.05 μ m of film, so generation can't obtain the problem on the such processing film of wrinkle inhibition effect, in addition, because the voidage in capacitor between thin layer reduces, do not escape from unfavorable conditions such as having influence on voltage-resistent characteristic outside the system so in capacitor, produce the gas or the metal that splashes that when recovering, take place, so be unsuitable.If Δ d surpasses 0.2 μ m, then when the batching of capacitor element, produce the such processability problems of film skew, in addition, because voidage adds die and causes internal discharge easily between the thin layer in the capacitor, therefore appear at capacitor charged when As time goes on capacitance reduce to strengthen, obstacles such as the proof voltage reduction of capacitor are so be unsuitable.Preferably 0.07 μ m above, below the 0.15 μ m.
As the Δ d that makes platypelloid type capacitor according to the present invention with polypropylene film is method in the above-mentioned scope, can enumerate the polymer extruded from extruder with chill roll cooling and the method for cooling curing, or select to have the method for suitable crystalline polymer, perhaps contain the method that polypropylene etc. is made the nuclear agent.
In addition, platypelloid type capacitor according to the present invention is necessary for below 3% with the contraction size changing rate of the length direction of polypropylene film.If surpass 3%, then the contraction of film strengthens in capacitor manufacturing processes such as heat treated capacitor element, because film is adjacent to and reduces between thin layer in capacitor, do not escape from unfavorable conditions such as the voltage-resistent characteristic that makes a difference outside the system so produce the gas or the metal that splashes that when recovering, take place, so be unsuitable.In addition, if platypelloid type capacitor according to the present invention is too small with the contraction size changing rate of the length direction of polypropylene film, then because because of being rolled into the hot resume that are subjected in capacitor manufacturing process behind the capacitor element or the use, the reeling condition of capacitor element fluffs sometimes, voidage between thin layer changes sometimes, so preferably be more than 0.5%, below 2.8%, being more preferably is more than 1.0%, below 2.5%.
And then, preferably below 4%, be more preferably more than 0.5%, below 3.5% with the contraction size changing rate sum of the contraction size changing rate of the length direction of polypropylene film and Width according to platypelloid type capacitor according to the present invention.If be in this scope,, can suppress the contraction of film, dimensional accuracy that can obtain wanting or capacitance precision then in evaporation processing or add hot pressing etc. and be subjected in the processing of thermal stress.
In addition, according to platypelloid type capacitor according to the present invention with 10 mean roughness Rz of the single face at least of polypropylene film preferably below the 0.6 μ m.If the Rz that with the metal evaporation is the face of purpose surpasses 0.6 μ m, then owing to concentrating because constitute the thick concavo-convex electric field that causes on the evaporation metal face of bringing into play function as the electrode of capacitor, voltage-resistent characteristic is reduced, so be that the Rz of face of purpose is preferably below the 0.6 μ m with the metal evaporation.Be more preferably below the 0.5 μ m.Moreover, though as long as the lower limit of Rz is received effect of the present invention just not to be limited especially, for the suitable sliding that keeps film, preferably more than the 0.1 μ m.
In addition, according to platypelloid type capacitor polypropylene film of the present invention, be difficult to slide in order to prevent that along with reduced thickness rigidity reduces and becomes, according to sliding give effect and economy preferably contains 0.5wt%～5wt% polymethylpentene, be more preferably in the scope that content is 0.7wt%～4wt%
In addition, though the qualification especially of the thickness of the polypropylene film among the present invention, because of the tendency that the thin film that lacks rigidity is in easy generation wrinkle, so effect is big especially in the film below the thickness 4 μ m of micron method.
Formation platypelloid type capacitor according to the present invention does not limit especially with the polymer of polypropylene film, except polypropylene homopolymers, even the copolymer of propylene and other alpha-olefins (for example ethene, butylene etc.), also it doesn't matter for the fusion product of polypropylene and other alpha-olefine polymers (for example polyethylene, polybutene etc.) in addition.
And then, according to platypelloid type capacitor polypropylene film of the present invention, with stenter method, plavini any obtain can, though extension method does not give qualification, according to thin and the irregular little requirement of thickness, two extensions of stenter method are best.
In addition, platypelloid type capacitor according to the present invention does not limit especially with the additive that is contained in the polypropylene film, can suitably select to add in the scope that does not influence capacitor specific characteristics yet.
The electrode of the occasion that platypelloid type capacitor according to the present invention is used in capacitor with polypropylene film limits especially, for example both can be that metal forming also can be the paper of double-sided metallization or plastic film, can also be the single face of polypropylene film of the present invention or two sides direct metallized, but it is in wishing the capacitor purposes of miniaturization and, suitable especially directly thin film metallized.At this moment, as used metal species,, do not limit especially though can enumerate monomer or multiple mixture or alloys etc. such as zinc, tin, silver, chromium, aluminium, copper, nickel.
In addition, as the method for film direct metallized, though can enumerate vacuum vapour deposition or sputtering method etc., do not limit especially, vacuum vapour deposition is better from viewpoints such as its productivity ratio or economy.Though in general can enumerate crucible mode or wire mode etc. as vacuum vapour deposition, do not limit especially, suitably select just passable.The third edge pattern of carrying out metallized occasion by evaporation also limits especially, can be that common pattern also can be the special pattern of implementing for purpose such as the raising of the fail safe of capacitor.But, because metal covering and pellicular front alternatively are contacted with various rollers when film is advanced, so and the Frotteurism of this roller not necessarily, cause unfavorable conditions such as wrinkle takes place easily, so particularly by adopting represent for example among Fig. 1 and Fig. 2 the sort of, comprise the mode that metalized portion 1 is not parallel to the marginal portion 2 of film length direction, can alleviate these unfavorable conditions, so be suitable.The generation type at these edges does not limit especially, for example, can be that the band mode also can be oily mode.
In addition, according to the capacitor of forming by polypropylene film of the present invention, can be used for special through forming the platypelloid type capacitor of the flattening suppression process of wrinkle easily.
Next, though one of above-mentioned this manufacture method according to polypropylene film of the present invention example is shown, limit especially.
The four [methylene-3 (3 that add 0.01～0.8wt%, 5 di-tert-butyl-hydroxy phenyls) propionic ester] acrylic resin of melt index (MI) 3.0～4.5g/10min of methane supplies to the extruder and the fusion of 240～270 ℃ temperature, from T mouth mould sheet with slit extrude, by the chill roll cooling curing of 75～95 ℃ temperature.At this moment, the melt index (MI) of acrylic resin is high more, and then to shrink size changing rate more little, ash content more at least in pentads mark (mesopentad fraction) high more and breakdown voltage improves, so suitably select each just passable.In addition, because it is high more in general to be in chill-roll temperature, the big more relation of surface roughness then, so the Δ d in order to obtain wanting suitably selects chill-roll temperature just passable, preferably 80～90 ℃.
Then lean on 135～155 ℃ extension roller in the longitudinal direction film to be extended 3～7 times.This occasion also is by selecting elongating temperature can change the size of surface roughness.Then, on Width with 7～12 times of 155～170 ℃ temperature extensions, and then, implement heat treatments with 150～165 ℃.Because it is low more in general to be in elongating temperature or heat treatment temperature, elongation is high more in addition then shrinks the big more relation of size changing rate, so suitably select these conditions just passable.After implementing Corona discharge Treatment on the single face of so resulting polypropylene film, batch with up-coiler.
Secondly, as the another kind of form of platypelloid type capacitor according to the present invention with polypropylene film, the Δ d of film is necessary for 0.1～0.3 μ m.Δ d and aforementioned person are same, it is the value of the difference of thickness from the micron method thickness that deducts mass method, the rough surface that means film if this value is big, voidage between the thin layer when being rolled into capacitor element strengthens, if little then mean that the surface of film is level and smooth, the voidage between the thin layer when being rolled into capacitor element diminishes.
Above-mentioned this according to platypelloid type capacitor according to the present invention with in the polypropylene film, because film becomes and is difficult to slide during the Δ d less than 0.1 μ m of film, so generation can't obtain the problem in the such processing of wrinkle inhibition effect, in addition, in capacitor, reduce because of the voidage between thin layer, do not escape from unfavorable conditions such as the voltage-resistent characteristic that makes a difference outside the system so in capacitor, produce the gas or the metal that splashes that when recovering, take place, so be unsuitable.If Δ d surpasses 0.3 μ m, then when the batching of capacitor element, produce the problem of the such processability of film dislocation, in addition, voidage adds die and causes internal discharge easily between the thin layer in the capacitor, therefore appear at capacitor charged when As time goes on capacitance reduce to strengthen, so the obstacles such as proof voltage reduction of capacitor are unsuitable.The scope of 0.15～0.25 μ m preferably.
As making above-mentioned this platypelloid type capacitor according to the present invention be in the method for above-mentioned scope with the Δ d of polypropylene film, method or the selection that can enumerate the polymer temperature when the polymer that control extrudes from extruder with the chill roll cooling curing have the method for suitable crystalline polymer, perhaps contain β nucleus agent etc. and make the method for examining agent etc.
In addition, above-mentioned platypelloid type capacitor according to the present invention just in order to make film extend 5% required stress, is necessary for more than the 50MPa with the F5 value of the length direction of polypropylene film.If be lower than 50MPa, then multiple damaged when processing film, or it is bad that batching property such as wrinkle takes place when batching capacitor element, and then because the wrinkle when batching, or being involved in etc. of air, the unfavorable conditions such as voltage-resistent characteristic that make a difference are so be unsuitable.Preferably be more than the 55MPa.
In addition, above-mentioned platypelloid type capacitor according to the present invention preferably is in the scope of 0.7～1.4 μ m with 10 mean roughness Rz of the single face at least of polypropylene film.If Rz less than 0.7 μ m, even then owing to satisfied the Δ d of film, the discharge that produces the gas that takes place or the metal that splashes in the capacitor when recovering is also insufficient and voltage-resistent characteristic is reduced, so Rz preferably more than the 0.7 μ m, is more preferably more than the 0.9 μ m.In addition, if the Rz that with the metal evaporation is the face of purpose surpasses 1.4 μ m, then cause concentrating of electric field because of constituting thick concavo-convex event on the evaporation metal face of bringing into play function as the electrode of capacitor, voltage-resistent characteristic is reduced, thus with the metal evaporation be purpose face Rz preferably below the 1.4 μ m.Be more preferably below the 1.2 μ m.
In addition, the above-mentioned thickness of using polypropylene film according to platypelloid type capacitor according to the present invention, though do not limit especially, but with regard to the thin film that lacks rigidity because be in easy generation wrinkle or damaged tendency, so the thickness in the micron method is below the 4 μ m, preferably effect is big especially in the film below the 3.5 μ m.
Though constitute of the polymer especially qualification of above-mentioned platypelloid type capacitor according to the present invention with polypropylene film, except polypropylene homopolymers, even the copolymer of propylene and other alpha-olefins (for example ethene, butylene etc.), also it doesn't matter for the fusion product of polypropylene and other alpha-olefine polymers (for example polyethylene, polybutene etc.) in addition, but melting point is that the homopolymer more than 164 ℃ is best from voltage-resistent characteristic raising aspect, and being more preferably is more than 165 ℃.In addition, if melting point surpasses 167 ℃, the film system of then making extremely worsens, so melting point below 167 ℃ preferably.
And then, platypelloid type capacitor according to the present invention with polypropylene film with stenter method, plavini any obtain can, though extension method does not give qualification, according to thin and the irregular little requirement of thickness, two extensions of stenter method are best.
In addition, above-mentioned platypelloid type capacitor according to the present invention does not limit especially with the additive that is contained in the polypropylene film, can suitably select to add in the scope that does not influence capacitor specific characteristics yet.
The electrode of the occasion that above-mentioned platypelloid type capacitor according to the present invention is used in capacitor with polypropylene film limits especially, for example both can be that metal forming also can be the paper of double-sided metallization or plastic film, can also be the single face of polypropylene film of the present invention or two sides direct metallized, but particularly should be in wishing the capacitor purposes of miniaturization and directly thin film metallized.At this moment, as used metal species,, do not limit especially though can enumerate monomer or multiple mixture or alloys etc. such as zinc, tin, silver, chromium, aluminium, copper, nickel.
In addition, as the method for film direct metallized, though can enumerate vacuum vapour deposition or sputtering method etc., do not limit especially, vacuum vapour deposition is better from viewpoints such as its productivity ratio or economy.Though in general can enumerate crucible mode or wire mode etc. as vacuum vapour deposition, limit especially, suitably selection is just passable, little BB crucible mode is better but defective is given rate.The third edge pattern of carrying out metallized occasion by evaporation does not limit especially yet, can be that common pattern also can be purposes such as the raising for the fail safe of capacitor and the special pattern implemented, but with aforementioned same, because metal covering and pellicular front alternatively are contacted with various rollers when film is advanced, so and the Frotteurism of this roller not necessarily, cause unfavorable conditions such as wrinkle takes place easily, so particularly by adopting represent for example among Fig. 1 and Fig. 2 the sort of, comprise the mode that metalized portion 1 is not parallel to the marginal portion 2 of film length direction, can alleviate these unfavorable conditions, so be suitable.The generation type at these edges does not limit especially, for example, can be that the band mode also can be oily mode.
In addition, according to the capacitor of forming with polypropylene film by the platypelloid type capacitor of the present invention, can be used for special through forming the platypelloid type capacitor of the flattening suppression process of wrinkle easily.
Next, though one of above-mentioned manufacture method according to polypropylene film of the present invention example is shown, limit especially.
The four [methylene-3 (3 that add 0.01～0.8wt%, 5 di-tert-butyl-hydroxy phenyls) propionic ester] melt index (MI) of methane is extruder and the fusion that the acrylic resin of 3.0～4.5g/10min supplies to 230～270 ℃ temperature, from the T mouth mould sheet that imposes slit extrude, by the chill roll cooling curing of 75～95 ℃ temperature.At this moment, the low more then F5 of the melt index (MI) of acrylic resin value is big more, and ash content breakdown voltage more at least improves, so suitably select each just passable.In addition because in general to be in chill-roll temperature high more, the big more relation of surface roughness then, so the Δ d in order to obtain wanting suitably selects chill-roll temperature just passable, preferably 80～95 ℃.
Then lean on 135～155 ℃ extension roller in the longitudinal direction film to be extended 3～7 times.This occasion also is by selecting elongating temperature can change the size of surface roughness.Then, on Width with 7～12 times of 155～170 ℃ temperature extensions, and then, implement heat treatments with 150～165 ℃.Because it is low more in general to be in elongating temperature or heat treatment temperature, the big more relation of the high more then F5 of elongation value in addition is so suitably select these conditions just passable.Batch with up-coiler with after implementing Corona discharge Treatment on the single face of polypropylene film at so resulting platypelloid type capacitor.
Embodiment
Next, describe with regard to assay method and the evaluation method of using among the present invention
(1) melting point
Use the PerkinElmer corporate system, differential scanning calorimetry device DSC-7 measures under the following conditions.
The adjustment of sample:
Metering sample 10mg clamps the aluminium dish with the attached cleaning rod of device on the aluminium dish of measuring usefulness.
Condition determination:
The 1st takes turns: be warmed up to 280 ℃ with 10 ℃/minute ratios, kept 5 minutes.Cool to 125 ℃ with 50 ℃/minute ratio then, keep cooling to 25 ℃ with same ratio after 60 minutes, kept 10 minutes.
The 2nd takes turns: implemented the 1st and and then be warmed up to 280 ℃ with 10 ℃/minute ratio after taking turns.
Read the 2nd fusion peak value when taking turns as melting point.There is a plurality of occasions to adopt the fusion peak value of peak area maximum at the fusion peak value.
Repeating five times said determination, is melting point with the mean value of 3 of the residues of casting out 2 of wherein maximums and minimum value.
(2) melt index (MI)
Pressing the condition of JIS K 7210 measures.
(3)Δd
The 7.4.1 that presses JIS C-2330 (2001) measures the thickness (hereinafter referred to as MMV) of micron method.After then pressing the thickness (hereinafter referred to as WMV) of 7.4.1.2 quality measurement method of JIS C-2330 (2001), obtain with following formula.
Δd(μm)＝MM-WMV
(4) shrink size changing rate
Press the 7.4.6.2B method of JIS C-2330 (2001).
(5) ten mean roughness (Rz)
Press JIS B-0601 (1982), with the little slope institute system of Co., Ltd ' non-contact three-dimensional fine shape analyzer (ET-30HK) ' with ' three-dimensional roughness analytical equipment (MODEL SPA-11) is measured.Measure number and be taken as 3, use its mean value.
Detailed conditions is as follows.
The mensuration face is handled: vacuum evaporated aluminium on the mensuration face is taken as the noncontact method.
Measured length: 1mm
Horizontal magnification: 200 times
Vertical multiplying power: 20000 times
Cut: 0.25mm
Width feed rate: 0.1m/ second
Length direction is sent spacing to: 10 μ m
Length direction is sent number to: 20 times
Measure direction: the Width of film
(6) gauffer incidence and dislocation incidence
On polypropylene film, aluminium is made film resistance 5 Ω/ with ULVAC corporate system vacuum evaporation plating machine, do not implement the common edge metal film at T type edge and with the combination of these common edge product, perhaps make film resistance 15 Ω/, the T type edge metal film of the pattern of Fig. 2, do not implement making up of T type edge with common edge product, carry out common capacitor and make same the batching of operation, make the capacitor element of 100 capacitance 100 μ F, the incidence of investigation wrinkle and dislocation.The condition of mainly batching of this moment is as follows.
Coiling machine: all rattan is made made KAW-4L
Coiling speed: 2000rpm
Tension force: 600g
Moreover in the present invention, to 100 capacitor elements of making, below 5%, it is qualified that dislocation incidence 5% following person is taken as the wrinkle incidence.
(7) proof voltage
The capacitor element that obtains from above-mentioned (6) extracts 10,, carries out self-reparability by 8.14 of JIS C-4908 (1985) and tests after having carried out 16 hours heat treated under the state of flattening with the pressure of 110 ℃ temperature, 0.4MPa.Judge from mean value that recovers number and destruction capacitor number with this.
Moreover recovering several below 7 certainly, it is qualified that the destruction number is taken as below 3 in the present invention.
(8) F5 value
7.4.5 by JIS C-2330 (2001) measures, and calculates sample and extends 5% o'clock stress.
(9) proof voltage (the destruction number of element on average applies voltage)
The capacitor element that obtains from above-mentioned (6) extracts 10, after having carried out 6 hours heat treated under the flattening state, carries out metallising and dress lead terminal with the pressure of 110 ℃ temperature 0.4MPa.With this element of epoxy encapsulation, make the capacitor that capacitance is 100 μ F, under 105 ℃ atmosphere, apply the voltage of DC 1000V, the destruction of investigation element, and electric capacitance change, judge up to rate of change of capacitance by following benchmark to reach 50% the application time and the destruction number of element.
Destruction number with element is qualified below 2
Mean value (midway except the saboteur) with application time was qualified more than 100 hours
Next, based on embodiment the present invention is described.
The four [methylene-3 (3 that add 0.3wt%, 5 di-tert-butyl-hydroxy phenyls) propionic ester] melt index (MI) of methane is extruder and the fusion that the acrylic resin of 3.5g/10min supplies to 250 ℃ temperature, from the T mouth mould sheet that imposes slit extrude, behind the chill roll cooling curing by 85 ℃ temperature, extend 5 times in the longitudinal direction with 140 ℃ temperature, then on Width, extend 10 times with 167 ℃ temperature, then, temperature with 165 ℃ is heat-treated. then, implementing Corona discharge Treatment on the single face of film so that after soaking that tension force becomes 42mN/m and batching with up-coiler, and then cut into width 620mm, length 40000m rolls.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.10 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.4 μ m, 10 mean roughness Rz of opposing face are 0.7 μ m, and the contraction size changing rate of length direction is 2.7%, and the contraction size changing rate of Width is 0.3%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 2%, and the dislocation incidence is 0%.
In addition, recovering number certainly is 2, and destroying number is 0.
Except polymer, obtain polypropylene film with the condition identical with embodiment 1 with the polymethylpentene that adds 2.0wt%.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.11 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.4 μ m, 10 mean roughness Rz of opposing face are 0.7 μ m, and the contraction size changing rate of length direction is 2.6%, and the contraction size changing rate of Width is 0.2%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 0%, and the dislocation incidence is 0%.
In addition, recovering number certainly is 2, and destroying number is 0.
Embodiment 3
Except being extruder and the fusion that the acrylic resin of 3.9g/10min supplies to 250 ℃ temperature to melt index (MI), from the T mouth mould sheet that imposes slit extrude beyond, obtain polypropylene film with the condition identical with embodiment 1.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.13 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.5 μ m, 10 mean roughness Rz of opposing face are 0.8 μ m, and the contraction size changing rate of length direction is 2.5%, and the contraction size changing rate of Width is 0%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 0%, and the dislocation incidence is 3%.
In addition, recovering number certainly is 5, and destroying number is 1.
Embodiment 4
Except the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 80 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 1.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.06 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.2 μ m, 10 mean roughness Rz of opposing face are 0.3 μ m, and the contraction size changing rate of length direction is 2.9%, and the contraction size changing rate of Width is 0.5%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 2%, and the dislocation incidence is 4%.
In addition, recovering number certainly is 2, and destroying number is 3.
Embodiment 5
Except the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 90 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 1.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.18 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.6 μ m, 10 mean roughness Rz of opposing face are 0.9 μ m, and the contraction size changing rate of length direction is 2.7%, and the contraction size changing rate of Width is 0.1%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 0%, and the dislocation incidence is 4%.
In addition, recovering number certainly is 4, and destroying number is 2.
Embodiment 6
Except extending 5 times in the longitudinal direction with 140 ℃ temperature, then on Width, extend 10 times with 158 ℃ temperature, beyond heat-treating with 160 ℃ temperature then, obtain polypropylene film with the condition identical with embodiment 1.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.09 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.4 μ m, 10 mean roughness Rz of opposing face are 0.6 μ m, and the contraction size changing rate of length direction is 3.0%, and the contraction size changing rate of Width is 0.7%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 0%, and the dislocation incidence is 0%.
In addition, recovering number certainly is 3, and destroying number is 3.
Comparative example 1
Except the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 70 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 1.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.03 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.2 μ m, 10 mean roughness Rz of opposing face are 0.3 μ m, and the contraction size changing rate of length direction is 2.8%, and the contraction size changing rate of Width is 0.3%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 8%, and the dislocation incidence is 10%.
In addition, recovering number certainly is 7, and destroying number is 8.
Comparative example 2
Except the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 96 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 1.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.21 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.7 μ m, 10 mean roughness Rz of opposing face are 1.2 μ m, and the contraction size changing rate of length direction is 2.5%, and the contraction size changing rate of Width is 0.1%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 0%, and the dislocation incidence is 6%.
In addition, recovering number certainly is 9, and destroying number is 6.
Comparative example 3
Except being extruder and the fusion that the acrylic resin of 2.8g/10min supplies to 250 ℃ temperature to melt index (MI), from the T mouth mould sheet that imposes slit extrude beyond, obtain polypropylene film with the condition identical with embodiment 1.
At this moment, the MMV of film is 3 μ m, and Δ d is 0.09 μ m, 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.4 μ m, 10 mean roughness Rz of opposing face are 0.6 μ m, and the contraction size changing rate of length direction is 3.4%, and the contraction size changing rate of Width is 0.8%.
Then cut into width 100mm with vacuum evaporation plating machine single face AM aluminum metallization on this film so that become the film resistance of 5 Ω/ with capacitor, length 4800mm takes 48 spools.
Make 100 capacitor elements with this spool, the incidence of investigation wrinkle and dislocation.The wrinkle incidence is 0%, and the dislocation incidence is 0%.
In addition, recovering number certainly is 5, and destroying number is 6.
Embodiment 7
The four [methylene-3 (3 that add 0.3wt%, 5 di-tert-butyl-hydroxy phenyls) propionic ester] melt index (MI) of methane (チ バ ス ペ シ ヤ リ テ イ ケ ミ ケ Le (Co., Ltd) system Irganoxl1010) is 3.7g/10min, melting point is extruder and the fusion that 166 ℃ acrylic resin supplies to 240 ℃ temperature, from the T mouth mould sheet that imposes slit extrude, behind the chill roll cooling curing by 90 ℃ temperature, extend 5 times in the longitudinal direction with 140 ℃ temperature, then on Width, extend 10 times, heat-treat with 150 ℃ temperature then with 162 ℃ temperature.Then, implementing Corona discharge Treatment on the single face of film so that soak after tension force becomes 42mN/m and the film with up-coiler reeling width 5000mm, and then cutting into width 620mm, length 40000m rolls.
At this moment, the MMV of film is 3.3 μ m, and Δ d is 0.20 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 1.0 μ m, and 10 mean roughness Rz of opposing face are 1.1 μ m, and the F5 value of length direction is 52MPa.
With capacitor with vacuum evaporation plating machine on this film with the T type pattern of Fig. 2, the single face AM aluminum metallization cuts into width 100mm then so that become the film resistance of 15 Ω/, length 4800mm takes 48 spools.The width of the edge part of length direction is 0.7mm, and the edge of the width of 0.4mm is set on Width with the interval of 16mm.In addition, similarly take common edge product.Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 2%, and the dislocation incidence is 1%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 0, and application time is 173 hours.
Embodiment 8
Except being melt index (MI) 3.2g/10min, melting point is extruder and the fusion that 166 ℃ acrylic resin supplies to 250 ℃ temperature, from the T mouth mould sheet that imposes slit extrude beyond, obtain polypropylene film with the condition identical with embodiment 7.
At this moment, the MMV of film is 3.2 μ m, and Δ d is 0.19 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 1.0 μ m, and 10 mean roughness Rz of opposing face are 1.0 μ m, and the F5 value of length direction is 57MPa.
Condition evaporation on this film with identical with embodiment 7 cuts into width 100mm then, and length 4800mm takes 48 spools.
Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 0%, and the dislocation incidence is 0%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 0, and application time is 212 hours.
Embodiment 9
Except the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 87 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 7.
At this moment, the MMV of film is 3.2 μ m, and Δ d is 0.12 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.8 μ m, and 10 mean roughness Rz of opposing face are 0.9 μ m, and the F5 value of length direction is 53MPa.
Condition evaporation on this film with identical with embodiment 7 cuts into width 100mm then, and length 4800mm takes 48 spools.
Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 4%, and the dislocation incidence is 0%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 2, and application time is 235 hours.
Embodiment 10
Except the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 93 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 7.
At this moment, the MMV of film is 3.3 μ m, and Δ d is 0.27 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 1.2 μ m, and 10 mean roughness Rz of opposing face are 1.2 μ m, and the F5 value of length direction is 52MPa.
Condition evaporation on this film with identical with embodiment 7 cuts into width 100mm then, and length 4800mm takes 48 spools.
Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 1%, and the dislocation incidence is 4%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 0, and application time is 134 hours.
Embodiment 11
Behind the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 91 ℃ temperature, extend in the longitudinal direction beyond 5 times with 138 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 7.
At this moment, the MMV of film is 3.2 μ m, and Δ d is 0.19 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.7 μ m, and 10 mean roughness Rz of opposing face are 0.8 μ m, and the F5 value of length direction is 55MPa.
Condition evaporation on this film with identical with embodiment 7 cuts into width 100mm then, and length 4800mm takes 48 spools.
Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 3%, and the dislocation incidence is 1%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 1, and application time is 188 hours.
Embodiment 12
Behind the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 89 ℃ temperature, extend 5 times in the longitudinal direction with 136 ℃ temperature, then on Width, extend 10 times with 165 ℃ temperature, then, beyond heat-treating with 160 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 7.
At this moment, the MMV of film is 3.2 μ m, and Δ d is 0.18 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.8 μ m, and 10 mean roughness Rz of opposing face are 0.8 μ m, and the F5 value of length direction is 5.5MPa.
Condition evaporation on this film with identical with embodiment 7 cuts into width 100mm then, and length 4800mm takes 48 spools.
Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 0%, and the dislocation incidence is 0%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 1, and application time is 227 hours.
Comparative example 4
Except the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 83 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 7.
At this moment, the MMV of film is 3.2 μ m, and Δ d is 0.07 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 0.5 μ m, and 10 mean roughness Rz of opposing face are 0.6 μ m, and the F5 value of length direction is 52MPa.
Condition evaporation on this film with identical with embodiment 7 cuts into width 100mm then, and length 4800mm takes 48 spools.
Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 7%, and the dislocation incidence is 0%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 6, and application time is 206 hours.
Comparative example 5
Behind the sheet material of extruding from the T mouth mould that imposes slit with the chill roll cooling curing of 97 ℃ temperature, extend in the longitudinal direction beyond 5 times with 142 ℃ temperature, obtain polypropylene film with the condition identical with embodiment 7.
At this moment, the MMV of film is 3.3 μ m, and Δ d is 0.35 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 1.5 μ m, and 10 mean roughness Rz of opposing face are 1.6 μ m, and the F5 value of length direction is 51MPa.
Condition evaporation on this film with identical with embodiment 7 cuts into width 100mm then, and length 4800mm takes 48 spools.
Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 1%, and the dislocation incidence is 10%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 2, and application time is 71 hours.
Comparative example 6
Except being melt index (MI) 4.1g/10min, melting point is extruder and the fusion that 165 ℃ acrylic resin supplies to 230 ℃ temperature, from the T mouth mould sheet that imposes slit extrude beyond, obtain polypropylene film with the condition identical with embodiment 7.
At this moment, the MMV of film is 3.2 μ m, and Δ d is 0.20 μ m, and 10 mean roughness Rz that implement the face of Corona discharge Treatment are 1.0 μ m, and 10 mean roughness Rz of opposing face are 1.1 μ m, and the F5 value of length direction is 45MPa.
Condition evaporation on this film with identical with embodiment 7 cuts into width 100mm then, and length 4800mm takes 48 spools.
Make up these T type edge product and make 100 capacitor elements, the incidence of investigation wrinkle and dislocation with common edge product.The wrinkle incidence is 11%, and the dislocation incidence is 1%.
In addition, reach 50% up to rate of change of capacitance, the destruction number of element is 3, and application time is 141 hours.
The foregoing description 1～12, comparative example 1～6 the results are shown in table 1,2.
Table 1
| | | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |||
| Micron method thickness (μ m) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | ||
| Δd (μm) | 0.10 | 0.11 | 0.13 | 0.06 | 0.18 | 0.09 | 0.03 | 0.21 | 0.09 | ||
| Shrink size rate (%) | Length direction | 2.7 | 2.6 | 2.5 | 2.9 | 2.7 | 3.0 | 2.8 | 2.5 | 3.4 | |
| Width | 0.3 | 0.2 | 0 | 0.5 | 0.1 | 0.7 | 0.3 | 0.1 | 0.8 | ||
| Rz | Treated side (μ m) | 0.4 | 0.4 | 0.5 | 0.2 | 0.6 | 0.4 | 0.2 | 0.7 | 0.4 | |
| Opposing face (μ m) | 0.7 | 0.7 | 0.8 | 0.3 | 0.9 | 0.6 | 0.3 | 1.2 | 0.6 | ||
| F5 value (MPa) | 48 | 48 | 46 | 48 | 48 | 48 | 47 | 48 | 49 | ||
| Wrinkle (%) | 2 | 0 | 0 | 2 | 0 | 0 | 8 | 0 | 0 | ||
| Dislocation (%) | 0 | 0 | 3 | 4 | 4 | 0 | 10 | 6 | 0 | ||
| Destroy number (individual) | 0 | 0 | 1 | 3 | 2 | 3 | 8 | 6 | 6 | ||
| From recovering number (individual) | 2 | 2 | 5 | 2 | 4 | 3 | 7 | 9 | 6 | ||
Table 2
| Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 | Comparative example 4 | Comparative example 5 | Comparative example 6 | |||
| Micron method thickness (μ m) | 3.3 | 3.2 | 3.2 | 3.3 | 3.2 | 3.2 | 3.2 | 3.3 | 3.2 | ||
| Δd (μm) | 0.20 | 0.19 | 0.12 | 0.27 | 0.19 | 0.18 | 0.07 | 0.35 | 0.20 | ||
| F5 value (MPa) | 52 | 57 | 53 | 52 | 55 | 55 | 52 | 51 | 45 | ||
| Rz | Treated side (μ m) | 1.0 | 1.0 | 0.8 | 1.2 | 0.7 | 0.8 | 0.5 | 1.5 | 1.0 | |
| Opposing face (μ m) | 1.1 | 1.0 | 0.9 | 1.2 | 0.8 | 0.8 | 0.6 | 1.6 | 1.1 | ||
| Shrink size rate (%) | Length direction | 3.3 | 3.5 | 3.4 | 3.2 | 3.5 | 2.7 | 3.3 | 3.4 | 3.2 | |
| Width | 0.3 | 0.6 | 0.4 | 0.5 | 0.5 | 0.2 | 0.6 | 0.4 | 0.2 | ||
| Wrinkle (%) | 2 | 0 | 4 | 1 | 3 | 0 | 7 | 1 | 11 | ||
| Dislocation (%) | 1 | 0 | 0 | 4 | 1 | 0 | 0 | 10 | 1 | ||
| Destroy number (individual) | 0 | 0 | 2 | 0 | 1 | 1 | 6 | 2 | 3 | ||
| Average application time (hour) | 173 | 212 | 235 | 134 | 188 | 227 | 206 | 71 | 141 | ||
From table 1,2 as can be seen, by the present invention, in the coiling process of capacitor element or suppression process thereafter, can suppress the generation of wrinkle and dislocation, and can obtain good voltage-resistent characteristic, particularly outstanding on the self-reparability, small-sized big capacity and be suitable for the platypelloid type capacitor polypropylene film of the use of high voltage-rated.
Industrial applicibility
Platypelloid type capacitor of the present invention is particularly suitable for turning to purpose with small-size high-capacity with polypropylene film with by the platypelloid type capacitor that it forms, with the platypelloid type capacitor as purpose of using under the high voltage-rated.
Claims (18)
1. a platypelloid type capacitor polypropylene film is characterized in that, the difference Δ d of the thickness of the micron method of film and the thickness of mass method is 0.05～0.2 μ m, and the contraction size changing rate of length direction is below 3%.
2. the platypelloid type capacitor polypropylene film described in the claim 1 is characterized in that, the contraction size changing rate sum of the contraction size changing rate of length direction and Width is more than 4%.
3. the platypelloid type capacitor polypropylene film described in the claim 1 is characterized in that, ten of single face mean roughness Rz are below the 0.6 μ m at least.
4. the platypelloid type capacitor polypropylene film described in the claim 1 is characterized in that, contains the polymethylpentene of 0.5～5wt%.
5. the platypelloid type capacitor polypropylene film described in the claim 1 is characterized in that, the film thickness of micron method is below the 4 μ m.
6. the platypelloid type capacitor polypropylene film described in the claim 1 is characterized in that, the F5 value of length direction is more than the 50MPa.
7. a platypelloid type capacitor polypropylene film is characterized in that, the difference Δ d of the thickness of the micron method of film and the thickness of mass method is 0.1～0.3 μ m, and the F5 value of length direction is more than the 50MPa.
8. the platypelloid type capacitor polypropylene film described in the claim 7 is characterized in that, ten of single face mean roughness Rz are 0.7～1.4 μ m at least.
9. the platypelloid type capacitor polypropylene film described in the claim 7 is characterized in that, the melting point of film forming acrylic resin is 164～167 ℃.
10. the platypelloid type capacitor polypropylene film described in the claim 7 is characterized in that, the film thickness of micron method is below the 4 μ m.
11. a platypelloid type capacitor metallized polypropylene film is characterized in that, the platypelloid type capacitor described in the claim 1 with the single face of polypropylene film or two sides on evaporation metal is arranged.
12. the platypelloid type capacitor metallized polypropylene film described in the claim 11 is characterized in that, in the edge of metal evaporation pattern, at least a portion is the edge that is not parallel to the film length direction.
13. a platypelloid type capacitor is characterized in that, has adopted the platypelloid type capacitor polypropylene film described in the claim 1 at least a portion.
14. a platypelloid type capacitor is characterized in that, has adopted the platypelloid type capacitor metallized polypropylene film described in the claim 11 at least a portion.
15. a platypelloid type capacitor metallized polypropylene film is characterized in that, the platypelloid type capacitor described in the claim 7 with the single face of polypropylene film or two sides on evaporation metal is arranged.
16. the platypelloid type capacitor metallized polypropylene film described in the claim 15 is characterized in that, in the edge of metal evaporation pattern, at least a portion is the edge that is not parallel to the film length direction.
17. a platypelloid type capacitor has wherein adopted the platypelloid type capacitor polypropylene film described in the claim 7 at least a portion.
18. a platypelloid type capacitor, wherein at least a portion with the platypelloid type capacitor metallized polypropylene film described in the claim 15.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP075843/2003 | 2003-03-19 | ||
| JP2003075843 | 2003-03-19 | ||
| JP161849/2003 | 2003-06-06 |
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| CN1762032A true CN1762032A (en) | 2006-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200480007305 Pending CN1762032A (en) | 2003-03-19 | 2004-03-16 | The platypelloid type capacitor is with polypropylene film with by its platypelloid type capacitor of forming |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701014A (en) * | 2013-12-09 | 2015-06-10 | 小岛冲压工业株式会社 | Metallized film capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701014A (en) * | 2013-12-09 | 2015-06-10 | 小岛冲压工业株式会社 | Metallized film capacitor |
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