CN112768236A - Capacitor base film with high adhesion rate and preparation device and method thereof - Google Patents
Capacitor base film with high adhesion rate and preparation device and method thereof Download PDFInfo
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- CN112768236A CN112768236A CN202110095780.2A CN202110095780A CN112768236A CN 112768236 A CN112768236 A CN 112768236A CN 202110095780 A CN202110095780 A CN 202110095780A CN 112768236 A CN112768236 A CN 112768236A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims description 10
- 238000002360 preparation method Methods 0.000 title claims description 8
- 238000003851 corona treatment Methods 0.000 claims abstract description 37
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims abstract description 17
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 41
- 238000004804 winding Methods 0.000 claims description 35
- 230000003068 static effect Effects 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 26
- 239000000919 ceramic Substances 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 16
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000010408 film Substances 0.000 abstract description 77
- 239000011104 metalized film Substances 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 3
- 230000003746 surface roughness Effects 0.000 abstract description 3
- 239000002585 base Substances 0.000 description 56
- 239000011148 porous material Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/33—Thin- or thick-film capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The capacitor base film with high adhesion rate is a biaxially oriented polypropylene film with the thickness of 2.8-3.8 microns, and the surface of the capacitor base film is concavely provided with irregularly arranged nanoscale microporous grooves. According to the invention, the surface of the biaxially oriented polypropylene (BOPP) film is subjected to corona treatment to form irregularly arranged nano-scale microporous grooves, so that the surface roughness and the surface area of the biaxially oriented polypropylene (BOPP) film are increased, the surface adhesion rate of the biaxially oriented polypropylene (BOPP) film is improved, and the qualification rate of the metalized film at the later stage is ensured.
Description
Technical Field
The invention belongs to the technical field of capacitor base films, and particularly relates to a high-adhesion-rate capacitor base film and a preparation device and method thereof.
Background
The capacitor base film refers to a plastic film which is used for a film capacitor and can be coated with a layer of extremely thin metal layer by evaporation on the surface; biaxially oriented polypropylene (BOPP) films are generally multilayer co-extruded films and are prepared by co-extruding polypropylene particles to form sheets and then stretching the sheets in longitudinal and transverse directions; the biaxially oriented polypropylene film (BOPP) has the characteristics of heat resistance, chemical corrosion resistance, light weight, excellent insulating property and better mechanical property, and can be widely used as a capacitor base film.
The surface of the existing biaxial stretching polypropylene film (BOPP) is generally smooth, so that the adhesion rate of metal on the surface of the BOPP is not high when the BOPP is subjected to vapor deposition, and the normal use of a later-stage metallized film capacitor is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a capacitor base film with high adhesion rate and a preparation device and a preparation method thereof, and the specific technical scheme is as follows:
the capacitor base film with high adhesion rate is a biaxially oriented polypropylene film with the thickness of 2.8-3.8 microns, and the surface of the capacitor base film is concavely provided with irregularly arranged nanoscale microporous grooves.
The capacitor base film preparation device with high adhesion rate is used for continuously processing the surface of the capacitor base film to form the nanometer-scale micropore groove;
the device comprises an unwinding roller, a winding roller and a winding device, wherein the unwinding roller is used for placing the coiled capacitor base film and is horizontally placed;
the preheating roller is used for adjusting the surface temperature of the capacitor base film and is arranged above one side of the unwinding roller in parallel;
the corona treatment mechanism is used for carrying out corona treatment on the surface of the capacitor base film to form the nanometer-scale micropore groove, and is positioned on one side of the preheating roller, which is deviated from the unwinding roller;
the traction roller is used for drawing and tensioning the capacitor base film conveyed out of the corona treatment mechanism and is positioned above one side of the corona treatment mechanism;
the static eliminator is used for eliminating static on the surface of the capacitor base film transmitted from the corona treatment mechanism and is arranged on one side of the drawing roller in parallel;
and the winding roller is used for winding the capacitor base film treated by the static eliminator into a roll and continuously drawing and pulling out the capacitor base film on the unwinding roller, and the winding roller and the drawing roller are transversely arranged in parallel.
Further, the preheating roller comprises a ceramic roller body with a hollow cylindrical structure, a silica gel roller sleeve is sleeved on the outer circumferential surface of the ceramic roller body, and two end faces of the ceramic roller body are axially communicated and butted with a roller shaft with a tubular structure; the preheating roller generates heat through a heating mechanism, the heating mechanism comprises a liquid storage tank filled with heat conducting liquid, a heat conducting sleeve is sleeved outside the liquid storage tank, the heat conducting sleeve is connected with a temperature controller through an electric wire, two ends of the liquid storage tank are respectively communicated and butted with the roller shaft through heat conducting pipes, and the heat conducting liquid in the liquid storage tank overflows to half of the internal volume of the ceramic roller body.
Further, corona treatment mechanism includes the casing, the casing top is provided with the corona frame, be provided with high frequency high voltage generator in the corona frame, high frequency high voltage generator bottom is connected with the electrode of prickle shape structure, the intercommunication is provided with the ozone air exhauster on the corona frame, be provided with the corona roller under the electrode, corona roller bilateral symmetry is provided with the nip rolls, two the nip rolls with the corona roller three is through setting up lift adjustment supporting mechanism synchronous lift on the base of casing supports.
Furthermore, the lifting adjusting support mechanism comprises a support plate, lifting components penetrate through the support plate at relative intervals, a power input component is arranged between the two lifting components and is positioned below the support plate, and the power input component is connected with the lifting components through transmission components on two sides of the power input component;
the lifting assembly comprises a rotating screw rod, a fixed block and a first gear, the rotating screw rod vertically penetrates through the supporting plate and is in threaded fit connection with the supporting plate, the upper end and the lower end of the rotating screw rod are respectively connected with the fixed block arranged on the side wall of the shell through bearings, the first gear is axially and fixedly connected to the lower portion of the rotating screw rod, and the first gear is located below the supporting plate;
the power input assembly comprises a first rotating shaft, a second gear and a support frame, the support frame is of a door-shaped structure, the support frame is installed on a base of the shell, the first rotating shaft is vertically arranged on the top surface of the support frame through a bearing, and the upper part of the first rotating shaft is axially and fixedly connected with the second gear;
the transmission assembly comprises a second rotating shaft, a third gear and a fourth gear, the second rotating shaft is vertically installed on the base of the shell through a bearing, the third gear is axially and fixedly connected to the middle of the second rotating shaft, the fourth gear is axially and fixedly connected to the upper portion of the second rotating shaft, the fourth gear is in transmission connection with the corresponding first gear, and the second gear is in transmission connection with the third gears on two sides;
supporting plate top surface middle part is installed through first support horizontal installation corona roller, supporting plate top surface both sides are respectively through second support horizontal installation have the compression roller.
Further, be provided with scale indication assembly on the casing, scale indication assembly includes scale and pointer, the vertical dress of pasting of scale is in on the casing lateral wall, the pointer level dock in the backup pad orientation the tip of scale, just the pointer with the movably butt joint of instructing of scale.
The preparation method of the capacitor base film with high adhesion rate, which applies the device, comprises the following steps:
s1: adjusting the gap between the corona roller and the electrode
Firstly, manually rotating a first rotating shaft, and driving a first gear to rotate at a constant speed through the transmission of a second gear, a third gear and a fourth gear, so that a rotating screw rotates to drive a supporting plate to longitudinally displace, and thus the gap between the corona roller and the electrode is adjusted to be kept at 1.5-2.5 mm;
s2: heating preheating roller
Firstly, setting the temperature value of a temperature controller at 35-45 ℃, and then starting a heating sleeve to heat conducting liquid in a liquid storage tank;
s3: winding capacitor base film
Firstly, axially sleeving a coiled capacitor base film on an unwinding roller, then sequentially winding and connecting a leading-out end of the capacitor base film with a preheating roller, a compression roller, a corona roller and a traction roller, and passing through a static eliminator to be adhered to a winding core barrel inserted on the winding roller;
s4: corona treatment of capacitor base films
Firstly, start high frequency high voltage generator, static eliminator and wind-up roll simultaneously, then, keep the rolling speed of wind-up roll, electrode and corona roll carry out continuous corona treatment to capacitor base film surface jointly, according to production needs, adjust the air door size of ozone air exhauster to keep the air relative humidity of production region invariable, static eliminator lasts the elimination capacitor base film surface static, and continues the rolling through the wind-up roll.
Further, unreel roller, preheating roller, nip roller, corona roller, carry over pinch rolls and wind-up roll and keep being parallel to each other in space each other, just the winding of condenser base film is located on preheating roller, corona roller and the carry over pinch rolls, the winding is located two below the nip roller.
The invention has the beneficial effects that:
according to the invention, the surface of the biaxially oriented polypropylene (BOPP) film is subjected to corona treatment to form irregularly arranged nano-scale microporous grooves, so that the surface roughness and the surface area of the biaxially oriented polypropylene (BOPP) film are increased, the surface adhesion rate of the biaxially oriented polypropylene (BOPP) film is improved, and the qualification rate of the metalized film at the later stage is ensured.
Drawings
FIG. 1 is a schematic view showing a high-adhesion-rate capacitor-based film manufacturing apparatus according to the present invention;
FIG. 2 is a schematic view showing the structure of a corona treatment mechanism according to the present invention;
FIG. 3 is a schematic view showing the construction of the lift adjustment support mechanism of the present invention;
FIG. 4 is a schematic view showing a structure in which a preheating roller is combined with a heating mechanism in the present invention;
FIG. 5 is a side view showing the structure of a preheating roll in the present invention;
FIG. 6 is a schematic view showing a partial structure of a capacitor base film with a high adhesion rate according to the present invention;
fig. 7 shows a flow chart of a method for manufacturing a capacitor base film with high adhesion rate according to the present invention.
Shown in the figure: 1. unwinding rollers; 2. a preheating roller; 21. a heating mechanism; 211. a liquid storage tank; 212. a heat conducting pipe; 213. heating a jacket; 214. a temperature controller; 215. an electric wire; 22. a silica gel roller sleeve; 23. a roll shaft; 24. a ceramic roller body; 3. a corona treatment mechanism; 31. a housing; 311. a base; 32. a corona frame; 33. a high frequency high voltage generator; 34. an electrode; 35. an ozone exhaust fan; 36. a corona roller; 361. a first bracket; 37. a nip roller; 371. a second bracket; 38. a lifting adjustment support mechanism; 381. a support plate; 382. a lifting assembly; 3821. rotating the screw; 3822. a fixed block; 3823. a first gear; 383. a power input assembly; 3831. a first rotating shaft; 3832. a second gear; 3833. a support frame; 384. a transmission assembly; 3841. a second rotating shaft; 3842. a third gear; 3843. a fourth gear; 385. a scale indicating assembly; 3851. a scale; 3852. a pointer; 4. a traction roller; 5. a static eliminator; 6. a wind-up roll; 7. a capacitor base film; 71. a nano-scale micropore groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 6, the capacitor base film 7 is a biaxially oriented polypropylene film with a thickness of 2.8-3.8 microns, and the surface of the capacitor base film 7 is concavely provided with irregularly arranged nanoscale microporous grooves 71.
Through the technical scheme, the surface of the biaxially oriented polypropylene (BOPP) film is subjected to corona treatment to form the irregularly arranged nano-scale micro-pore grooves 71, so that the surface roughness and the surface area of the nano-scale micro-pore grooves are increased, the surface adhesion rate of the nano-scale micro-pore grooves is improved, and the qualification rate of the metalized film at the later stage is ensured.
As shown in fig. 1, a high-adhesion-rate capacitor base film production apparatus for continuously treating the surface of the capacitor base film 7 to form the nano-scale micro-porous grooves 71 as claimed in claim 1;
the device comprises an unwinding roller 1, wherein the unwinding roller 1 is used for placing a coiled capacitor base film 7, and the unwinding roller 1 is horizontally placed;
the preheating roller 2 is used for adjusting the surface temperature of the capacitor base film 7, and the preheating roller 2 is arranged above one side of the unwinding roller 1 in parallel;
a corona treatment mechanism 3, wherein the corona treatment mechanism 3 is used for carrying out corona treatment on the surface of the capacitor base film 7 to form the nanometer-scale micropore grooves 71, and the corona treatment mechanism 3 is positioned on one side of the preheating roller 2, which is deviated from the unwinding roller 1;
a drawing roller 4, wherein the drawing roller 4 is used for drawing and tensioning the capacitor base film 7 conveyed out of the corona treatment mechanism 3, and the drawing roller 4 is positioned above one side of the corona treatment mechanism 3;
the static eliminator 5 is used for eliminating static on the surface of the capacitor base film 7 conveyed out of the corona treatment mechanism 3, and the static eliminator 5 is arranged on one side of the drawing roller 4 in parallel;
and the winding roller 6 is used for winding the capacitor base film 7 treated by the static eliminator 5 into a roll and continuously drawing and pulling out the capacitor base film 7 on the unwinding roller 1, and the winding roller 6 and the drawing roller 4 are transversely arranged in parallel.
Through the technical scheme, the preheating roller 2 can ensure reasonable film surface temperature of the capacitor base film 7, and the problem that the film surface tension is insufficient due to insufficient basic energy when molecules on the film surface are polarized and chemically changed due to too low temperature is solved; the corona treatment mechanism 3 can make the surface of the capacitor base film 7 generate chemical and physical changes to form irregularly arranged nanometer microporous grooves 71; the static eliminator 5 can eliminate static electricity generated on the film surface during corona treatment, and prevent the normal use of the metallized film capacitor from being influenced in the later period.
As shown in fig. 4 and 5, the preheating roller 2 includes a ceramic roller body 24 with a hollow cylindrical structure, a silica gel roller sleeve 22 is sleeved on the outer peripheral surface of the ceramic roller body 24, and two end surfaces of the ceramic roller body 24 are axially communicated and butted with a roller shaft 23 with a tubular structure; the preheating roller 2 generates heat through a heating mechanism 21, the heating mechanism 21 includes a liquid storage tank 211 filled with heat-conducting liquid, a heat-conducting sleeve 212 is sleeved outside the liquid storage tank 211, the heat-conducting sleeve 212 is connected with a temperature controller 214 through an electric wire 215, two ends of the liquid storage tank 211 are respectively communicated and butted with the roller shaft 23 through a heat-conducting pipe 212, and the heat-conducting liquid in the liquid storage tank 211 is diffused to a half of the internal volume of the ceramic roller body 24.
Through the technical scheme, the ceramic roller body 24 with the hollow cylindrical structure is matched with the external heating mechanism 21, and the heat-conducting liquid in the heating mechanism 21 is attached to the surface of the ceramic roller body 24 under the action of centrifugal force generated by rotation of the ceramic roller body 24, so that the surface of the ceramic roller body is uniformly heated; the silica gel roller sleeve 22 with low price is sleeved outside the ceramic roller body 24, so that the service life of the ceramic roller body 24 can be prolonged.
As shown in fig. 2, corona treatment mechanism 3 includes casing 31, casing 31 top is provided with corona frame 32, be provided with high-frequency high voltage generator 33 in the corona frame 32, high-frequency high voltage generator 33 bottom is connected with prickle-shaped structure's electrode 34, the intercommunication is provided with ozone air exhauster 35 on the corona frame 32, be provided with corona roller 36 under electrode 34, 36 bilateral symmetry of corona roller is provided with pinch roller 37, two pinch roller 37 with 36 three of corona roller is through setting up lift adjustment supporting mechanism 38 synchronous lift support on the base 311 of casing 31.
Through the technical scheme, the clamping rollers 37 on the two sides of the corona roller 36 can increase the adhesive force of the capacitor base film 7 on the corona roller 36; the elevation adjustment support mechanism 38 can reduce the number of operations required to adjust the nip rollers 37 on both sides simultaneously by adjusting the gap between the corona roller 36 and the electrode 34, and improve the working efficiency.
As shown in fig. 2 and 3, the lifting adjustment support mechanism 38 includes a support plate 381, a lifting assembly 382 is relatively arranged on the support plate 381 at an interval, a power input assembly 383 is arranged between two lifting assemblies 382, the power input assembly 383 is located below the support plate 381, and the power input assembly 383 is connected with the lifting assembly 382 through a transmission assembly 384 at two sides of the power input assembly 383;
the lifting component 382 comprises a rotating screw 3821, a fixed block 3822 and a first gear 3823, the rotating screw 3821 vertically penetrates through the supporting plate 381, and is in threaded fit connection with the supporting plate 381, the upper end and the lower end of the rotating screw 3821 are respectively connected with the fixed block 3822 mounted on the side wall of the housing 31 through bearings, the first gear 3823 is axially and fixedly connected to the lower portion of the rotating screw 3821, and the first gear 3823 is located below the supporting plate 381;
the power input assembly 383 comprises a first rotating shaft 3831, a second gear 3832 and a support frame 3833, wherein the support frame 3833 is of a door-shaped structure, the support frame 3833 is mounted on the base 311 of the housing 31, the first rotating shaft 3831 is vertically arranged on the top surface of the support frame 3833 through a bearing, and the upper part of the first rotating shaft 3831 is axially and fixedly connected with the second gear 3832;
the transmission assembly 384 comprises a second rotating shaft 3841, a third gear 3842 and a fourth gear 3843, the second rotating shaft 3841 is vertically mounted on the base 311 of the housing 31 through a bearing, the third gear 3842 is axially and fixedly connected to the middle of the second rotating shaft 3841, the fourth gear 3843 is axially and fixedly connected to the upper part of the second rotating shaft 3841, the fourth gear 3843 is in transmission connection with the corresponding first gear 3823, and the second gear 3832 is in transmission connection with the third gears 3842 on both sides;
the top surface middle part of the supporting plate 381 is horizontally provided with the corona roller 36 through a first support 361, and the top surface two sides of the supporting plate 381 are horizontally provided with the pinch roller 37 through a second support 371.
By the above technical solution, the power input assembly 383 is in gear transmission cooperation with the lifting assembly 382 through the transmission assembly 384, so that the lifting speed of the supporting plate 381 can be controlled slowly and uniformly, and thus, the adjustment of the very small gap between the corona roller 36 and the electrode 34 is facilitated.
As shown in fig. 2 and 3, a scale indicating assembly 385 is disposed on the housing 31, the scale indicating assembly 385 includes a scale 3851 and a pointer 3852, the scale 3851 is vertically attached to a side wall of the housing 31, the pointer 3852 is horizontally butted to an end portion of the supporting plate 381 facing the scale 3851, and the pointer 3852 is movably in indicating butt joint with the scale 3851.
Through the technical scheme, the pointer 3852 and the scale 3851 are matched, so that the rising height of the supporting plate 381 can be intuitively grasped, and the gap between the corona roller 36 and the electrode 34 can be accurately adjusted.
As shown in fig. 7, a method for manufacturing a capacitor base film with a high adhesion rate, using the device, includes the steps of:
s1: adjusting the gap between the corona roller 36 and the electrode 34
Firstly, manually rotating a first rotating shaft 3831, and driving a first gear 3823 to rotate at a constant speed through transmission of a second gear 3832, a third gear 3842 and a fourth gear 3843, so that a rotating screw 3821 rotates and drives a supporting plate 381 to longitudinally displace, and thus a gap between the corona roller 36 and the electrode 34 is adjusted, and the gap is kept at 1.5-2.5 mm;
s2: heating preheating roller 2
Firstly, setting the temperature value of the temperature controller 214 at 35-45 ℃, and then starting the heating sleeve 213 to heat the heat-conducting liquid in the liquid storage tank 211;
s3: wound capacitor base film 7
Firstly, axially sleeving a coiled capacitor base film 7 on an unwinding roller 1, then sequentially winding and connecting a leading-out end of the capacitor base film 7 with a preheating roller 2, a nip roller 37, a corona roller 36 and a traction roller 4, and passing through a static eliminator 5 to be adhered to a winding core barrel inserted on a winding roller 6;
s4: corona treatment of capacitor base film 7
Firstly, the high-frequency high-voltage generator 33, the static eliminator 5 and the winding roller 6 are started simultaneously, then the winding speed of the winding roller 6 is kept, the electrode 34 and the corona roller 36 carry out continuous corona treatment on the surface of the capacitor base film 7 together, the size of an air door of the ozone exhaust fan 35 is adjusted according to production requirements, the relative humidity of air in a production area is kept constant, and the static eliminator 5 continuously eliminates static electricity on the surface of the capacitor base film 7 and continuously winds the capacitor base film through the winding roller 6.
Through the technical scheme, the gap between the corona roller 36 and the electrode 34 can be reasonably held in the corona treatment process, the surface temperature of the capacitor base film 7 can be reasonably adjusted, and the static electricity on the surface of the corona-free base film can be eliminated; the corona treatment efficiency of capacitor base film 7 is better increased by reasonably controlling the amount of ozone generated by the corona and keeping the relative humidity of the air in the production area constant.
As shown in fig. 2, the unwinding roll 1, the preheating roll 2, the nip roll 37, the corona roll 36, the drawing roll 4, and the winding roll 6 are spatially kept parallel to each other, and the capacitor base film 7 is wound on the preheating roll 2, the corona roll 36, and the drawing roll 4, and is wound on the two nip rolls 37.
Through the technical scheme, the capacitor base film 7 can be kept stable in the running process, wrinkling and oblique pulling on the corona roller 36 are avoided, and uniform and sufficient corona amount is kept.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. Capacitor base film of high adhesion rate, its characterized in that: the capacitor base film (7) is a biaxially oriented polypropylene film with the thickness of 2.8-3.8 microns, and the surface of the capacitor base film (7) is concavely provided with irregularly arranged nanometer-scale microporous grooves (71).
2. Capacitor base film preparation facilities of high adhesion rate, its characterized in that: -a device for continuous treatment of the surface of the capacitor-based film (7) to form the nanoporous channels (71) as defined in claim 1;
the device comprises an unwinding roller (1), wherein the unwinding roller (1) is used for placing a coiled capacitor base film (7), and the unwinding roller (1) is horizontally placed;
the preheating roller (2) is used for adjusting the surface temperature of the capacitor base film (7), and the preheating roller (2) is arranged above one side of the unwinding roller (1) in parallel;
a corona treatment mechanism (3), wherein the corona treatment mechanism (3) is used for carrying out corona treatment on the surface of the capacitor base film (7) to form the nanometer-scale micropore groove (71), and the corona treatment mechanism (3) is positioned on one side of the preheating roller (2) deviating from the unwinding roller (1);
the traction roller (4) is used for drawing and tensioning the capacitor base film (7) conveyed out of the corona treatment mechanism (3), and the traction roller (4) is positioned above one side of the corona treatment mechanism (3);
the static eliminator (5) is used for eliminating static on the surface of the capacitor base film (7) transmitted from the corona treatment mechanism (3), and the static eliminator (5) is arranged on one side of the drawing roll (4) in parallel;
and the winding roller (6) is used for winding the capacitor base film (7) treated by the static eliminator (5) into a roll and continuously drawing and pulling out the capacitor base film (7) on the unwinding roller (1), and the winding roller (6) and the traction roller (4) are transversely arranged in parallel.
3. The high-adhesion-rate capacitor-based film production apparatus according to claim 2, characterized in that: the preheating roller (2) comprises a ceramic roller body (24) with a hollow cylindrical structure, a silica gel roller sleeve (22) is sleeved on the outer peripheral surface of the ceramic roller body (24), and two end surfaces of the ceramic roller body (24) are axially communicated and butted with a roller shaft (23) with a tubular structure; the preheating roller (2) generates heat through a heating mechanism (21), the heating mechanism (21) comprises a liquid storage tank (211) filled with heat conducting liquid, a heat conducting sleeve (212) is sleeved outside the liquid storage tank (211), the heat conducting sleeve (212) is connected with a temperature controller (214) through an electric wire (215), two ends of the liquid storage tank (211) are respectively communicated and butted with the roller shaft (23) through heat conducting pipes (212), and the heat conducting liquid in the liquid storage tank (211) spreads to a half of the internal volume of the ceramic roller body (24).
4. The high-adhesion-rate capacitor-based film production apparatus according to claim 2, characterized in that: corona treatment mechanism (3) are including casing (31), casing (31) top is provided with corona frame (32), be provided with high frequency high voltage generator (33) in corona frame (32), high frequency high voltage generator (33) bottom is connected with electrode (34) of prickle shape structure, the intercommunication is provided with ozone air exhauster (35) on corona frame (32), be provided with corona roller (36) under electrode (34), corona roller (36) bilateral symmetry is provided with press from both sides compression roller (37), two press from both sides compression roller (37) with corona roller (36) three is through setting up lift adjustment supporting mechanism (38) synchronous lift on base (311) of casing (31) is supported.
5. The high-adhesion-rate capacitor-based film production apparatus according to claim 4, characterized in that: the lifting adjusting support mechanism (38) comprises a support plate (381), lifting assemblies (382) are arranged on the support plate (381) at intervals, a power input assembly (383) is arranged between the two lifting assemblies (382), the power input assembly (383) is located below the support plate (381), and the power input assembly (383) is connected with the lifting assemblies (382) through transmission assemblies (384) on two sides of the power input assembly (383);
the lifting component (382) comprises a rotating screw rod (3821), a fixed block (3822) and a first gear (3823), the rotating screw rod (3821) vertically penetrates through the supporting plate (381) and is in threaded fit connection with the supporting plate (381), the upper end and the lower end of the rotating screw rod (3821) are respectively connected with the fixed block (3822) installed on the side wall of the shell (31) through bearings, the first gear (3823) is axially and fixedly connected to the lower portion of the rotating screw rod (3821), and the first gear (3823) is located below the supporting plate (381);
the power input assembly (383) comprises a first rotating shaft (3831), a second gear (3832) and a supporting frame (3833), the supporting frame (3833) is of a door-shaped structure, the supporting frame (3833) is installed on a base (311) of the shell (31), the first rotating shaft (3831) is vertically arranged on the top surface of the supporting frame (3833) through a bearing, and the upper portion of the first rotating shaft (3831) is axially and fixedly connected with the second gear (3832);
the transmission assembly (384) comprises a second rotating shaft (3841), a third gear (3842) and a fourth gear (3843), the second rotating shaft (3841) is vertically mounted on the base (311) of the shell (31) through a bearing, the third gear (3842) is fixedly connected to the middle of the second rotating shaft (3841) in the axial direction, the fourth gear (3843) is fixedly connected to the upper portion of the second rotating shaft (3841) in the axial direction, the fourth gear (3843) is in transmission connection with the corresponding first gear (3823), and the second gear (3832) is in transmission connection with the third gears (3842) on two sides;
backup pad (381) top surface middle part has through first support (361) horizontal installation corona roller (36), backup pad (381) top surface both sides have through second support (371) horizontal installation respectively pinch roller (37).
6. The high-adhesion-rate capacitor-based film production apparatus according to claim 5, characterized in that: be provided with scale indication assembly (385) on casing (31), scale indication assembly (385) includes scale (3851) and pointer (3852), vertical the dress of pasting of scale (3851) is in on casing (31) lateral wall, pointer (3852) level dock in backup pad (381) orientation the tip of scale (3851), just pointer (3852) with the butt joint is instructed in the scale (3851) is movably.
7. A method for manufacturing a capacitor-based film having a high adhesion rate, wherein the device of any one of claims 2 to 6 is applied, the method comprising the steps of:
s1: adjusting the gap between the corona roller (36) and the electrode (34)
Firstly, manually rotating a first rotating shaft (3831), and driving a first gear (3823) to rotate at a constant speed through transmission of a second gear (3832), a third gear (3842) and a fourth gear (3843), so that a rotating screw (3821) rotationally drives a supporting plate (381) to longitudinally displace, and therefore a gap between a corona roller (36) and an electrode (34) is adjusted, and the gap is kept at 1.5-2.5 mm;
s2: heating preheating roller (2)
Firstly, setting the temperature value of a temperature controller (214) at 35-45 ℃, and then starting a heating sleeve (213) to heat the heat-conducting liquid in the liquid storage tank (211) to raise the temperature;
s3: winding capacitor base film (7)
Firstly, axially sleeving a coiled capacitor base film (7) on an unwinding roller (1), then sequentially winding and connecting a leading-out end of the capacitor base film (7) with a preheating roller (2), a nip roller (37), a corona roller (36) and a traction roller (4), and passing through a static eliminator (5) to be adhered to a winding core cylinder inserted on a winding roller (6);
s4: corona treatment capacitor base film (7)
Firstly, a high-frequency high-voltage generator (33), a static eliminator (5) and a winding roller (6) are started simultaneously, then the winding speed of the winding roller (6) is kept, continuous corona treatment is carried out on the surface of a capacitor base film (7) by an electrode (34) and a corona roller (36) together, the size of an air door of an ozone exhaust fan (35) is adjusted according to production requirements, the relative humidity of air in a production area is kept constant, and static electricity on the surface of the capacitor base film (7) is continuously eliminated by the static eliminator (5) and is continuously wound by the winding roller (6).
8. The method for manufacturing a base film for capacitors with high adhesion according to claim 7, wherein: unreel roller (1), preheating roller (2), nip roll (37), corona roller (36), carry over pinch rolls (4) and wind-up roll (6) and keep being parallel to each other in space each other, just condenser base film (7) winding is located on preheating roller (2), corona roller (36) and carry over pinch rolls (4), the winding is located two under nip roll (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095780.2A CN112768236A (en) | 2021-01-25 | 2021-01-25 | Capacitor base film with high adhesion rate and preparation device and method thereof |
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| CN202110095780.2A CN112768236A (en) | 2021-01-25 | 2021-01-25 | Capacitor base film with high adhesion rate and preparation device and method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681877A (en) * | 2021-07-12 | 2021-11-23 | 广东美士达药包材料股份有限公司 | Treatment device for preventing back side corona of composite packaging film |
| CN115075053A (en) * | 2022-07-07 | 2022-09-20 | 安庆盛华纸质包装有限公司 | Corona device for processing antibacterial high-temperature-resistant coated paper |
-
2021
- 2021-01-25 CN CN202110095780.2A patent/CN112768236A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681877A (en) * | 2021-07-12 | 2021-11-23 | 广东美士达药包材料股份有限公司 | Treatment device for preventing back side corona of composite packaging film |
| CN113681877B (en) * | 2021-07-12 | 2023-02-28 | 广东美士达药包材料股份有限公司 | Treatment device for preventing back side corona of composite packaging film |
| CN115075053A (en) * | 2022-07-07 | 2022-09-20 | 安庆盛华纸质包装有限公司 | Corona device for processing antibacterial high-temperature-resistant coated paper |
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