CN116118140A - BOPP film, metallized film, capacitor, preparation method and application - Google Patents
BOPP film, metallized film, capacitor, preparation method and application Download PDFInfo
- Publication number
- CN116118140A CN116118140A CN202310347434.8A CN202310347434A CN116118140A CN 116118140 A CN116118140 A CN 116118140A CN 202310347434 A CN202310347434 A CN 202310347434A CN 116118140 A CN116118140 A CN 116118140A
- Authority
- CN
- China
- Prior art keywords
- film
- stretching
- section
- temperature
- bopp film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention relates to the technical field of films, in particular to a BOPP film, a metallized film, a capacitor, a preparation method and application, wherein the preparation method of the BOPP film comprises the steps of melting polypropylene raw material resin at 200-300 ℃, melting and extruding from a die head, cooling and solidifying at a cold roller temperature of 90-120 ℃ and an air knife temperature of 15-35 ℃ to obtain a cast sheet, and then sequentially carrying out biaxial stretching and corona treatment to obtain a finished film; the biaxial stretching device comprises a preheating section, a stretching section and a shaping section, wherein the temperature of the preset section is set to 120-150 ℃, the temperature of the stretching section is set to 140-160 ℃, and the temperature of the shaping section is set to 145-155 ℃.
Description
Technical Field
The invention relates to the technical field of films, in particular to a BOPP film, a metallized film, a capacitor, a preparation method and application.
Background
Biaxially oriented polypropylene film (BOPP film) has excellent voltage-resistant characteristics, low loss, and the like, and is particularly preferably used for film capacitors. The BOPP film used for the film capacitor is required to have a moderately roughened surface from the viewpoints of voltage resistance, productivity, and processability, and is particularly important for improving the film sliding property and oil impregnation property, or imparting safety to the capacitor. The roughening method of the polypropylene film includes a mechanical method and a chemical method, but the roughening density is low in the mechanical method and the chemical method, and the addition of a polymer such as polyethylene is likely to produce β -crystals of the resin, and coarse protrusions are likely to be formed on the film surface during stretching, and the roughening density is sometimes unsatisfactory, so that further improvement is required.
Disclosure of Invention
The present invention aims to solve the above technical problems.
The purpose of the present invention is to provide a BOPP film which is suitable for use in a film capacitor and has a proper surface roughness and few coarse protrusions.
The invention provides a preparation method of BOPP film, which comprises the steps of melting polypropylene raw resin at 200-300 ℃, melting and extruding from a die head, cooling and solidifying at 90-120 ℃ of a cold roller and 15-35 ℃ of an air knife to obtain a cast sheet, and then sequentially carrying out biaxial stretching and corona treatment to obtain a finished film; the biaxial stretching device comprises a preheating section, a stretching section and a shaping section, wherein the temperature of the preset section is set to 120-150 ℃, the temperature of the stretching section is set to 140-160 ℃, and the temperature of the shaping section is set to 145-155 ℃.
According to the embodiment of the invention, the crystallinity of the polypropylene raw material resin is 60-70%, the isotactic index is more than 95%, and the ash content is less than 80ppm.
According to an embodiment of the present invention, the polypropylene base resin contains branched polypropylene.
According to the embodiment of the invention, the stretching ratio of the longitudinal stretching in the biaxial stretching is 5-8 times, and the stretching ratio of the transverse stretching is 9-12 times.
According to an embodiment of the invention, the BOPP film has a thickness of 3-5 μm.
According to an embodiment of the present invention, the BOPP film has an average roughness of 0.09 μm or more.
The invention also provides the BOPP film prepared by the preparation method of the BOPP film.
The invention also provides a metallized film having a metal film on one or both sides of the BOPP film as described above.
The invention also provides a capacitor comprising a metallized film as described above.
The invention also provides the application of the metallized film in a film capacitor.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the preparation method of the BOPP film comprises the steps of melting polypropylene raw resin at 200-300 ℃, melting and extruding the polypropylene raw resin from a die head, cooling and solidifying the polypropylene raw resin at 90-120 ℃ of a cold roller and 15-35 ℃ of an air knife to obtain a cast sheet, and then sequentially carrying out biaxial stretching and corona treatment to obtain a finished film; the biaxial stretching device comprises a preheating section, a stretching section and a shaping section, wherein the temperature of the preset section is set to 120-150 ℃, the temperature of the stretching section is set to 140-160 ℃, and the temperature of the shaping section is set to 145-155 ℃. According to the technical scheme, in the process of preparing the cast sheet, the crystallinity of the surface of the film before being stretched is controlled by controlling the cooling temperature, and further in the process of biaxial stretching, the melting degree of surface crystals is adjusted by controlling the temperatures of the preheating section, the stretching section and the shaping section, so that the beta crystals are partially broken and recrystallized into alpha crystals, and the BOPP film with proper roughness is obtained after stretching.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Detailed Description
The invention is further illustrated by way of example below, but it will be understood that these specific examples will not limit the scope of the invention in any way. Unless otherwise noted, the raw materials used in the following examples are all commercial products, and the quality thereof meets the national standard.
The embodiment of the invention provides a preparation method of a BOPP film, which comprises the following steps:
step S1: melt extrusion of polypropylene raw material resin;
step S2: cooling and solidifying the extruded resin to obtain a cast sheet;
step S3: biaxially stretching the cast sheet to obtain a film;
step S4: and carrying out corona treatment on the stretched film to obtain a finished film.
According to the embodiment of the invention, the polypropylene raw material resin adopts raw materials with crystallinity of 60% -70%, isotactic index of more than 95% and ash content of less than 80ppm. The polypropylene film of the present embodiment may contain branched polypropylene for the purpose of improving surface smoothness, heat resistance, and the like. It is known to those skilled in the art that the polypropylene film of the present embodiment can provide BOPP films even without branched polypropylene. In the present embodiment, the branched polypropylene is not particularly limited as long as it has long-chain branches and the polypropylene film of the present embodiment can be obtained. Specifically, for example, profaxPF-814, PF-611, PF-633, and Daploy HMS-PP series manufactured by Nordic chemical company of Basell (Basell) polyolefin are available.
According to an embodiment of the present invention, step S1 is specifically to supply the polypropylene raw material resin to an extruder, heat and melt the polypropylene raw material resin, and the heating temperature is preferably 200 ℃ to 300 ℃, more preferably 220 ℃ to 280 ℃, and after the melted raw material resin passes through a filter, melt extrusion is performed from a die.
According to an embodiment of the present invention, step S2 is specifically to cool and solidify the extruded resin at a chill roll temperature of 90 to 120 ℃, more preferably 95 to 105 ℃, and an air knife temperature of 15 to 35 ℃, more preferably 15 to 20 ℃ to obtain a cast sheet. The thickness of the cast sheet is not particularly limited as long as it is convenient to prepare a BOPP film having a thickness of 5 μm or less. In the mode of the invention, the temperature of the cold roller in the step S2 cannot be selected to be too high or too low, the temperature is too low, the size of crystal grains generated on the surface of the film is too large, the stretching performance of the film is reduced, the film is easy to break in the stretching process, when the cooling temperature is too high, the crystal forming speed of the cast sheet is low, a proper amount of crystals cannot be formed, and the special requirements of the ultrathin capacitance film on the crimping property and the heat resistance of the film cannot be met. In the embodiment of the present invention, the temperature of the air knife in step S2 is not easily too high or too low, and if the air temperature of the air knife is too high, crystallization of the film may be excessively performed, and stretching in the subsequent step may become difficult, and if the air temperature of the air knife is too low, crystallization may be insufficiently generated, and it may be difficult to obtain the coarsening degree of the target surface.
According to the embodiment of the present invention, the biaxial stretching in step S3 may be a stepwise stretching or a synchronous biaxial stretching; wherein the stretching ratio of the longitudinal stretching is 5-8 times, and the stretching ratio of the transverse stretching is 9-12 times.
In the mode of the invention, the biaxial stretching is divided into a preheating section, a stretching section and a shaping section, the temperature of the preheating section is set to 120-150 ℃, the temperature of the stretching section is set to 140-160 ℃, and the temperature of the shaping section is set to 145-155 ℃. The preheating section can be further divided into three sections, the temperature gradually rises along the feeding direction, and the following preferable steps are: 120-130 ℃, 130-140 ℃, 140-150 ℃; the stretching section can be further divided into three sections, and the temperature is 140-152 ℃, 140-156 ℃ and 156-160 ℃ in sequence; the shaping section can be further divided into three sections, and the temperature is preferably 152-155 ℃, 148-152 ℃, 145-150 ℃ in sequence.
In the mode of the invention, the crystallinity of the surface of the film before stretching is regulated by controlling the temperature of the cold roller and the temperature of the air knife in the step S2, and in the biaxial stretching process, the temperatures of the preheating section, the stretching section and the shaping section are controlled, so that the conversion from the beta crystal form of the film to the alpha crystal form of the film is completed, the crystallization process is accelerated, the internal stress of the film is eliminated, the crystallinity is improved, and the crystal structure is improved.
The BOPP film with the thickness of 3-5 mu m is prepared by the preparation method, the average roughness of the film is more than 0.09 mu m, and the processing adaptability of the film is met.
According to the embodiment of the invention, step S4 carries out corona treatment on the stretched film to obtain a finished film so as to improve the bonding characteristic in the processing procedure of the metallized film.
The invention also provides the BOPP film prepared by the preparation method of the BOPP film.
The invention also provides a metallized film having a metal film on one or both sides of the BOPP film as described above.
The invention also provides a capacitor comprising a metallized film as described above.
The invention also provides the application of the metallized film in a film capacitor.
Example 1
And (3) melting the polypropylene raw material resin with the crystallinity of 60-70%, the isotactic index of more than 95 and the ash content of less than 80ppm at the temperature of 250 ℃, processing the polypropylene raw material resin through a filter, extruding the polypropylene raw material resin through a die head, and cooling and solidifying the polypropylene raw material resin at the temperature of 120 ℃ of a cold roller and the temperature of 35 ℃ of an air knife to obtain the cast sheet. The cast sheet was passed between rolls provided with a speed difference, stretched 5 times in the longitudinal direction, and then the obtained stretched film was introduced into a tenter, stretched 9 times in the transverse direction, and then a final film having a thickness of 5um was obtained by corona treatment. Wherein, the three temperatures of the preheating section are 120 ℃,135 ℃ and 145 ℃ in sequence, the three temperatures of the stretching section are 152 ℃,156 ℃ and 160 ℃ in sequence, and the three temperatures of the shaping section are 155 ℃,152 ℃ and 147 ℃ in sequence.
Example 2
And (3) melting the polypropylene raw material resin with the crystallinity of 60-70%, the isotactic index of more than 95 and the ash content of less than 80ppm at the temperature of 250 ℃, processing the polypropylene raw material resin through a filter, extruding the polypropylene raw material resin through a die head, and cooling and solidifying the polypropylene raw material resin at the temperature of 100 ℃ of a cold roller and the temperature of 20 ℃ of an air knife to obtain the cast sheet. The cast sheet was passed between rolls provided with a speed difference, stretched 5 times in the longitudinal direction, and then the obtained stretched film was introduced into a tenter, stretched 9 times in the transverse direction, and then a final film having a thickness of 5um was obtained by corona treatment. Wherein, the three temperatures of the preheating section are 120 ℃,135 ℃ and 145 ℃ in sequence, the three temperatures of the stretching section are 152 ℃,156 ℃ and 160 ℃ in sequence, and the three temperatures of the shaping section are 155 ℃,152 ℃ and 147 ℃ in sequence.
Example 3
And (3) melting the polypropylene raw material resin with the crystallinity of 60-70%, the isotactic index of more than 95 and the ash content of less than 80ppm at the temperature of 250 ℃, processing the polypropylene raw material resin through a filter, extruding the polypropylene raw material resin through a die head, and cooling and solidifying the polypropylene raw material resin at the temperature of 90 ℃ of a cold roller and the temperature of 15 ℃ of an air knife to obtain the cast sheet. The cast sheet was passed between rolls provided with a speed difference, stretched 5 times in the longitudinal direction, and then the obtained stretched film was introduced into a tenter, stretched 9 times in the transverse direction, and then a final film having a thickness of 5um was obtained by corona treatment. Wherein, the three temperatures of the preheating section are 120 ℃,130 ℃ and 140 ℃ in sequence, the three temperatures of the stretching section are 140 ℃,152 ℃ and 156 ℃ in sequence, and the three temperatures of the shaping section are 152 ℃,148 ℃ and 150 ℃ in sequence.
Example 4
And (3) melting the polypropylene raw material resin with the crystallinity of 60-70%, the isotactic index of more than 95 and the ash content of less than 80ppm at the temperature of 250 ℃, processing the polypropylene raw material resin through a filter, extruding the polypropylene raw material resin through a die head, and cooling and solidifying the polypropylene raw material resin at the temperature of 90 ℃ of a cold roller and the temperature of 15 ℃ of an air knife to obtain the cast sheet. The cast sheet was passed between rolls provided with a speed difference, stretched 8 times in the longitudinal direction, and then the obtained stretched film was introduced into a tenter frame, stretched 10 times in the transverse direction, and then a final film having a thickness of 4um was obtained by corona treatment. Wherein, the three temperatures of the preheating section are 120 ℃,130 ℃ and 140 ℃ in sequence, the three temperatures of the stretching section are 140 ℃,152 ℃ and 156 ℃ in sequence, and the three temperatures of the shaping section are 152 ℃,148 ℃ and 150 ℃ in sequence.
Example 5
And (3) melting the polypropylene raw material resin with the crystallinity of 60-70%, the isotactic index of more than 95 and the ash content of less than 80ppm at the temperature of 250 ℃, processing the polypropylene raw material resin through a filter, extruding the polypropylene raw material resin through a die head, and cooling and solidifying the polypropylene raw material resin at the temperature of 90 ℃ of a cold roller and the temperature of 15 ℃ of an air knife to obtain the cast sheet. The cast sheet was passed between rolls provided with a speed difference, stretched 8 times in the longitudinal direction, and then the obtained stretched film was introduced into a tenter frame, stretched 12 times in the transverse direction, and then a final film having a thickness of 3um was obtained by corona treatment. The three temperatures of the preheating section are 120 ℃,130 ℃ and 140 ℃ in sequence, the three temperatures of the stretching section are 140 ℃,152 ℃ and 156 ℃ in sequence, and the three temperatures of the shaping section are 152 ℃,148 ℃ and 150 ℃ in sequence.
The polypropylene films prepared in examples 1 to 5 of the present invention were evaluated, and the main test method was GB/T12802, and the specific evaluation results are shown in the following table.
According to the embodiment and the test result, the crystallinity of the surface of the film before being stretched is controlled by controlling the cooling temperature, and further, in the biaxial stretching process, the melting degree of the surface crystals is adjusted by controlling the temperatures of the preheating section, the stretching section and the shaping section, so that the beta crystals are partially broken and recrystallized into alpha crystals, and the BOPP film with the roughness of more than 0.09 and good heat resistance and dielectric strength is obtained after stretching, and the requirement of miniaturization of the capacitor can be met.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention in any way; any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modifications to equivalent embodiments using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent substitution, equivalent variation and modification of the above embodiments according to the technical substance of the present invention, which do not depart from the technical solution of the present invention, still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The preparation process of BOPP film includes the steps of smelting polypropylene resin at 200-300 deg.c, extruding from mold head, cooling at 90-120 deg.c in cold roller and 15-35 deg.c in air knife to obtain cast sheet, and subsequent biaxial stretching and corona treatment to obtain film; the biaxial stretching device comprises a preheating section, a stretching section and a shaping section, wherein the temperature of the preset section is set to 120-150 ℃, the temperature of the stretching section is set to 140-160 ℃, and the temperature of the shaping section is set to 145-155 ℃.
2. The method for producing BOPP film according to claim 1, wherein the crystallinity of the polypropylene raw material resin is 60% -70%, the isotactic index is more than 95%, and the ash content is less than 80ppm.
3. The method for producing BOPP film according to claim 1, wherein the polypropylene raw material resin contains branched polypropylene.
4. The method for producing BOPP film according to claim 1, wherein the stretching ratio of the longitudinal stretching in the biaxial stretching is 5 to 8 times and the stretching ratio of the transverse stretching is 9 to 12 times.
5. The method for producing BOPP film according to claim 1, wherein the BOPP film has a thickness of 3 to 5 μm.
6. The method for producing a BOPP film according to claim 1, wherein the BOPP film has an average roughness of 0.09 μm or more.
7. BOPP film produced by the process of any one of claims 1-6.
8. A metallized film comprising a metal film on one or both sides of the BOPP film of claim 7.
9. A capacitor comprising the metallized film of claim 8.
10. Use of the metallized film of claim 8 in a film capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310347434.8A CN116118140A (en) | 2023-04-04 | 2023-04-04 | BOPP film, metallized film, capacitor, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310347434.8A CN116118140A (en) | 2023-04-04 | 2023-04-04 | BOPP film, metallized film, capacitor, preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116118140A true CN116118140A (en) | 2023-05-16 |
Family
ID=86303092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310347434.8A Pending CN116118140A (en) | 2023-04-04 | 2023-04-04 | BOPP film, metallized film, capacitor, preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116118140A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324298A (en) * | 2011-09-01 | 2012-01-18 | 江门市润田实业投资有限公司 | Production method of coarsening membrane for extra-high voltage electrical network matching capacitor |
| CN103434110A (en) * | 2013-08-30 | 2013-12-11 | 华威聚酰亚胺有限责任公司 | High-performance polypropylene film for heavy-current capacitors and manufacturing method thereof |
| CN103434151A (en) * | 2013-08-30 | 2013-12-11 | 华威聚酰亚胺有限责任公司 | High-performance ultrathin polypropylene capacitor film and manufacturing method thereof |
| CN103985540A (en) * | 2014-04-30 | 2014-08-13 | 宁波大东南万象科技有限公司 | Preparation method of ultrathin high-temperature resistant capacitance film applied to capacitors of power-driven and hybrid electric vehicles |
| CN114179341A (en) * | 2021-10-28 | 2022-03-15 | 安徽飞达电气科技有限公司 | Biaxially oriented polypropylene film for capacitor |
-
2023
- 2023-04-04 CN CN202310347434.8A patent/CN116118140A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324298A (en) * | 2011-09-01 | 2012-01-18 | 江门市润田实业投资有限公司 | Production method of coarsening membrane for extra-high voltage electrical network matching capacitor |
| CN103434110A (en) * | 2013-08-30 | 2013-12-11 | 华威聚酰亚胺有限责任公司 | High-performance polypropylene film for heavy-current capacitors and manufacturing method thereof |
| CN103434151A (en) * | 2013-08-30 | 2013-12-11 | 华威聚酰亚胺有限责任公司 | High-performance ultrathin polypropylene capacitor film and manufacturing method thereof |
| CN103985540A (en) * | 2014-04-30 | 2014-08-13 | 宁波大东南万象科技有限公司 | Preparation method of ultrathin high-temperature resistant capacitance film applied to capacitors of power-driven and hybrid electric vehicles |
| CN114179341A (en) * | 2021-10-28 | 2022-03-15 | 安徽飞达电气科技有限公司 | Biaxially oriented polypropylene film for capacitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103434110B (en) | A kind of forceful electric power capacitor high-performance polypropylene film and manufacture method thereof | |
| DE2639067C3 (en) | Process for the production of transparent moldings from polypropylene films | |
| CN114179341A (en) | Biaxially oriented polypropylene film for capacitor | |
| EP3428996B1 (en) | Method for preparing lithium-ion battery separator | |
| CN102509610B (en) | Preparation method for 2.5 mu m polypropylene capacitor thin film | |
| CN103434151B (en) | A kind of high-performance ultrathin polypropylene capacitor film and manufacture method thereof | |
| JPS58145735A (en) | Production of porous polytetrafluoroethylene article | |
| JPH11147962A (en) | Biaxially stretched polypropylene with roughened surface and its production | |
| CN112406146B (en) | Biaxially oriented poly-4-methyl-1-pentene film and preparation method thereof | |
| CN116118140A (en) | BOPP film, metallized film, capacitor, preparation method and application | |
| CN111534730B (en) | Preparation method of 2219T8511 aluminum alloy extruded section | |
| CN115340725B (en) | High-tensile-strength polypropylene film for lithium battery current collector and preparation method thereof | |
| CN1251257C (en) | High temperature resistant polypropylene capactive film and production thereof | |
| CN105522723A (en) | Manufacturing method for high temperature-resistant biaxially-oriented polypropylene capacitor films with thickness being 2.8 micrometers | |
| EP0036457B1 (en) | A method of producing a polypropylene film for electrical appliances | |
| CN116277827A (en) | Polypropylene film, metallized film, capacitor, preparation method and application | |
| CN102501387A (en) | Preparation method of corona-treated polypropylene coarsened capacitor film | |
| CN115674628A (en) | Polyethylene ultrathin film and preparation method thereof | |
| CN114015151A (en) | Polypropylene capacitor film with high breakdown voltage | |
| CN107379584A (en) | The method of production of capacitor low-shrinkage Biaxially oriented polypropylene capactive film | |
| CN110328951B (en) | Crosslinked polyolefin heat-shrinkable film and preparation method thereof | |
| CN115782149A (en) | Biaxially oriented polypropylene high-temperature-resistant coarsening film and preparation method thereof | |
| JP3006751B2 (en) | Thermoplastic resin film having excellent thickness uniformity and method for producing the same | |
| CN114261164A (en) | High-temperature-resistant BOPP film and preparation method thereof | |
| KR0140299B1 (en) | Process for preparing biaxially oriented polyester film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |