CN113555644A - Method for improving wrinkle print of membrane surface of lithium battery diaphragm coating membrane - Google Patents
Method for improving wrinkle print of membrane surface of lithium battery diaphragm coating membrane Download PDFInfo
- Publication number
- CN113555644A CN113555644A CN202110808410.9A CN202110808410A CN113555644A CN 113555644 A CN113555644 A CN 113555644A CN 202110808410 A CN202110808410 A CN 202110808410A CN 113555644 A CN113555644 A CN 113555644A
- Authority
- CN
- China
- Prior art keywords
- coating
- drying
- membrane
- rib
- roller
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a method for improving the wrinkle print of a lithium battery diaphragm coating film surface, which comprises the following steps: (1) preheating and coating linkage: preheating the base film before coating, wherein a preheating roller is close to the gravure roller during coating; (2) constant force pressure coating: when the base film is coated, a scraper of a coating device is always in contact with the roller surface of the gravure roller by using a constant force pressurizing mechanism, so that the stability of the coating is kept; (3) and (3) segmented drying: drying the coating film in a drying oven in a subsection way, wherein the coating film is tightly attached to a roller during drying, the drying pressure of the front section is negative pressure, the drying pressure of the rear section is positive pressure, and the drying temperature of the front section is lower than that of the rear section; (4) releasing tension: the coating film after using the book core that the surface has the rib to dry rolls up, and the surface of rolling up the core evenly is fixed with the rib along circumference, and the rib extends along the circumference of rolling up the core, and the surface of rib is the arcwall face, and the both ends of rib are equipped with the buffering ring of fixing respectively at roll core tip, and the thickness of buffering ring is greater than the thickness of rib.
Description
Technical Field
The invention relates to a method for improving the wrinkle print of a coating film surface of a lithium battery diaphragm, and belongs to the technical field of lithium battery diaphragm production.
Background
The lithium battery diaphragm coating process is longer, the film surface appearance is more and more difficult to control under the trend that the coating film is thinner and thinner at present, and the coating film cannot be kept in a better state after being rolled only by the control of a hot roller and tension at an unreeling position. When coating the current lithium battery diaphragm coating film, the problems of substrate leakage, uneven thickness and the like caused by film surface wrinkle, stripe or uneven coating are all accompanied, and the main performance is as follows: (1) macroscopically, the abrasion of a scraper and uneven coating at the gravure roller cause stripes and creases; (2) the film surface collapses, and tension lines are formed due to uneven tension caused by medium waves; (3) the efficiency of the oven is low, and the membrane surface is easy to wrinkle because the oven is not dried and needs higher temperature; (4) the film is easy to collapse when being in a transverse swinging posture after being wound on the tube core due to irregular winding, and the film surface is easy to wrinkle due to rib explosion and tension lines after being wound; (5) microscopically, uneven coating results in missing basal, black spots, and the like.
These problems affect product consistency and product cost and greatly limit the rate of a product from coating to slitting.
Disclosure of Invention
The invention aims to provide a method for improving the wrinkle print of a coating film surface of a lithium battery diaphragm, which improves the film surface state, improves the product quality and the A yield by improving the processes from coating to slitting.
The invention adopts the following technical scheme: a method for improving the wrinkle of the membrane surface of a lithium battery diaphragm coating membrane comprises the following steps: (1) preheating and coating linkage: preheating the base film before coating, wherein a preheating roller is close to the gravure roller during coating; (2) constant force pressure coating: when the base film is coated, a scraper of a coating device is always in contact with the roller surface of the gravure roller by using a constant force pressurizing mechanism, so that the stability of the coating is kept; (3) and (3) segmented drying: the coating film is dried in a drying oven in a segmented mode, the coating film is tightly attached to a roller during drying, the drying pressure of the front section is negative pressure, the drying pressure of the rear section is positive pressure, the drying temperature of the front section is lower than that of the rear section, the coating film is heated and relaxed through segmented drying, and wrinkling and crease are avoided; (4) releasing tension: the coating film after using the book core that the surface has the rib to dry is rolled up, and the surface of rolling up the core evenly is fixed with the rib along circumference, and the rib extends along the circumference of rolling up the core, and the surface of rib is the arcwall face, and the both ends of rib are equipped with the buffering ring of fixing respectively at book core tip, and the thickness of buffering ring is greater than the thickness of rib, and when the rolling, the membrane face is in under the effect of support all the time and keeps leveling, makes diaphragm coating tension obtain the release simultaneously.
In the step (1), the preheating temperature of the base film is 65-80 ℃, the distance between a preheating roller and a gravure roller is less than or equal to 800mm during coating, and the wrap angle of the base film passing through the preheating roller is more than or equal to 120 degrees.
In the step (2), the force of the scraper on the roller surface of the gravure roller is a constant value, and the precision is +/-50 gf.
In the step (2), the constant force pressurizing mechanism comprises a pressurizing seat, a spring is arranged between the pressurizing seat and the scraper, one end of the spring is fixed on the pressurizing seat, the other end of the spring is fixed on the scraper, and a pressure test point is arranged at the position, close to the scraper, of the spring.
The segmented drying is divided into three segments, the first segment drying temperature is 65-80 ℃, the drying pressure is-40 to-10 Pa, the second segment drying temperature is 65-90 ℃, the drying pressure is-100 to-60 Pa, the third segment drying temperature is 20-60 ℃, and the drying pressure is 20-60 Pa.
In the second stage, the distance between the rollers is 500 +/-100 mm.
The segmented drying is carried out in the same oven, and the length ratio of the first segment to the second segment to the third segment is 1: (1.5-2.5): 1, the total length of the oven is more than or equal to 18 m.
The number of the ribs on the tube core is eight or ten, the ribs are foam slivers, and the buffer ring is a foam ring.
The radian of the upper surface of each rib is 109-115 degrees, the width is larger than or equal to 45mm, the thickness is 5-15 mm, and the Shore hardness of the rib material is larger than or equal to 50.
The thickness of the buffer ring is 0.5-1.5 mm thicker than the ribs.
The invention has the beneficial effects that: according to the invention, the preheating roller is used for heating the base film, the preheating roller is close to the gravure roller during coating, the base film is heated by the hot roller to achieve the preheating effect, the fluidity of the slurry on the film surface is improved, and the drying efficiency is improved; the contact pressure of the scraper and the micro gravure roller is in a controllable stable state by utilizing a constant force pressurizing mechanism, so that the phenomenon of crease caused by inconsistent stress release after rolling due to uneven film surface coating is avoided; the drying step adopts segmented drying, so that the drying efficiency is improved, the heating is mild, and the generation of wrinkles and creases is avoided; in the rolling step, an irregular rolling pipe core is adopted, ribs provide support for the film surface, tension lines are reduced, internal stress is released, and a buffer ring provides a high-speed cutting acting point, so that the effect of improving the wrinkle print of the film surface in all directions is achieved. The invention provides a set of complete membrane surface pleat print improvement measures, improves the membrane surface state, and improves the product quality and the A product rate.
Drawings
FIG. 1 is a flow chart of a method of improving the wrinkle print of a lithium battery separator coated membrane surface according to one embodiment of the present invention;
FIG. 2 is a schematic view of a constant force pressurization mechanism;
FIG. 3 is a schematic view of a winding core with ribs;
FIG. 4 is a cross-sectional view of the beaded core of FIG. 3;
FIG. 5 is a side view of the beaded core of FIG. 3;
FIG. 6 is a schematic roll-up view;
fig. 7 is a schematic diagram of a buffer ring.
In the figure: 1-preheating roller, 2-gravure roller, 3-scraper, 4-constant force pressurizing mechanism, 41-pressurizing seat, 42-spring, 5-oven, 51-first section, 52-second section, 52-third section, 6-roller, 7-negative pressure pump, 8-circulating air filter, 9-gas dehumidifier, 101-winding core, 102-rib, 103-buffer ring, 10-compression roller and 11-cutter.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1, a method for improving the wrinkle of the membrane surface of the lithium battery separator coating membrane according to an embodiment of the present invention comprises the following steps:
(1) preheating and coating linkage: the base film is preheated before coating, the preheating temperature of the base film is 65-80 ℃, during coating, a preheating roller 1 is close to a gravure roller 2, the distance between the preheating roller 1 and the gravure roller 2 is less than or equal to 800mm, and the wrap angle of the base film passing through the preheating roller 1 is more than or equal to 120 degrees.
The film is heated to 65-80 ℃ before the base film is coated, the heating temperature can be adjusted in a small range according to the thickness of the base film, the PE base film enters a high elastic state at about 70 ℃, the base film is easy to deform due to external force at the temperature, the tension of the coating part enables the maximum position in the whole process to be easier to keep the film smooth, and the generation probability of crease marks is reduced. Therefore, the film is ironed by means of coating tension, the flowability of slurry on the film surface is improved, the consistency of coating is increased, and coating defects caused by appearance of the base film are reduced.
When coating, the preheating roller 1 is close to the gravure roller 2, the volatilization of a coating solvent is accelerated by utilizing heat conduction, the drying can be accelerated, the temperature of the drying oven is reduced, the distance between the preheating roller and the gravure roller is less than or equal to 800mm, the time for reaching the gravure roller is about 0.5s according to 100m/min, and the heat dissipation is avoided. The film is heated.
(2) Constant force pressure coating: when the base film is coated, a scraper 3 of a coating device is always contacted with the roller surface of the gravure roller 2 by using a constant force pressurizing mechanism, so that the stability of the coating is kept. As shown in fig. 2, the constant force pressing mechanism adopted in this embodiment includes a pressing base 41, a spring 42 is installed between the pressing base 41 and the doctor blade 3, one end of the spring 42 is fixed on the pressing base 41, the other end is fixed on the doctor blade 3, a pressure test point is located at a position of the spring 42 close to the doctor blade 3, and the force of the doctor blade on the roll surface of the gravure roll is a constant value with a precision of ± 50 gf.
As the scraper is used as a quick-wear part, the scraper is easy to wear, uneven coating is easy to cause film surface defects after being worn, and the scraper is always in light contact with the roller surface of the gravure roller through the constant force control mechanism, so that the stability of a coating is kept. The specific principle is as follows: the scraper of the miniature gravure roller is soft and is in light contact with the gravure roller, the gravure roller is made of wear-resistant and hard materials and is easy to generate friction, and particularly, the surface of the gravure roller used for a period of time is not smooth any more due to abrasion, so that the problem of inconsistent material carrying of the gravure roller is easy to generate.
(3) And (3) segmented drying: the coating film is dried in a drying oven in a segmented mode, the coating film is tightly attached to a roller during drying, the drying pressure of the front section is negative pressure, the drying pressure of the rear section is positive pressure, the drying temperature of the front section is lower than that of the rear section, the coating film is heated and relaxed through segmented drying, and wrinkling and crease generation are avoided. In the embodiment, the segmented drying is divided into three segments, the first segment 51 is dried at 65-80 ℃ and the drying pressure is-40 to-10 Pa, the second segment 52 is dried at 65-90 ℃ and the drying pressure is-100 to-60 Pa, and the third segment 53 is dried at 20-60 ℃ and the drying pressure is 20 to 60 Pa. In the second stage, the distance between the rollers 6 is 500. + -.100 mm. The segmented drying is carried out in the same oven 5, and the length ratio of the first segment to the second segment to the third segment is 1: (1.5-2.5): 1, the total length of the oven 5 is more than or equal to 18m, and the actual length is finely adjusted according to the overall design of a production line.
The temperature and pressure of each section in the oven can be adjusted in a small scale according to the thickness of the base film and the raw material of the base film, the first section is used as the most important part, the coating is not dried and can be heated in a contact manner at the position, a roller is passed at a higher temperature, meanwhile, low-air-volume hot air is used, the selection is specifically carried out according to the solid content of the slurry and the breadth of the base film, and the coating is stabilized while preheating; in the second stage, low negative pressure hot drying air is used, specifically, the air is selected according to the solid content of slurry and the width of the base film, the distance between rollers is required to be as small as possible, and is recommended to be 500 +/-100 mm, so that the force borne by the film surface is reduced, the volatilization effect is increased, and more than 80% of moisture is volatilized; and in the third stage, the middle air quantity is used for drying balance, the air pressure of air inlet and air exhaust is the same, the air nozzle keeps about 15 degrees with the moving direction of the membrane, the final drying is carried out through dry gas circulation and gas exchange, hot air with lower temperature is used, the specific temperature is selected according to the solid content of slurry and the width of the base membrane, the rest moisture is volatilized, the membrane is attached to a roller, the membrane surface vibration is reduced, and the excessive recovery to the normal temperature avoids the membrane surface defect caused by temperature shock. The first section 51 is a heating and micro negative pressure area, the second section 52 is a negative pressure drying area, the third section 53 is a moderation drying area, the first section 51 and the second section 52 use a negative pressure pump 7 to pump negative pressure, the third section 53 is connected with a circulating air filter 8 to balance air pressure, and the negative pressure pump 7 and the circulating air filter 8 are connected with an air dehumidifier 9.
The first section and the second section adopt negative pressure drying, and the lower the pressure is, the more easily the boiling point of water is volatilized, so that the drying speed of the coating film is higher; the whole drying process is mild and efficient, and local defects caused by unstable coatings due to severe changes of the environment (temperature, humidity and the like) such as wrinkling on the film surface are prevented.
(4) Releasing tension: the dried coating film is wound by using a winding core 101 with ribs 102 on the surface, the ribs 102 are uniformly fixed on the surface of the winding core 101 along the circumferential direction, the ribs 102 extend along the circumferential direction of the winding core 101, the surface of the ribs 102 is an arc-shaped surface, two ends of each rib 102 are provided with buffer rings 103 respectively fixed at the end parts of the winding core 102, the thickness of each buffer ring 103 is larger than that of each rib 102, the film surface is always kept flat under the supporting effect during winding, and meanwhile, the coating tension of the diaphragm is released. The number of ribs on the tube core is eight, the ribs are foam slivers, and the buffer ring is a foam ring. The shore hardness of the rib material is more than or equal to 50, the radian of the upper surface of the rib is 109-115 degrees, the width is more than or equal to 45mm, and the thickness is 5-15 mm.
Eight foam slivers are evenly adhered to the outer surface of the tube core, eight ribs are adhered to the surface of the tube core, no support is arranged between every two adjacent ribs, the film is equivalently arranged on the tube core and is arranged on two rollers, one function of each rib is to adapt to the wrap angle of the membrane rolled on the tube core, the membrane is ensured to be excessively smooth, and stress concentration at a certain point is avoided. The principle of tension release is specifically: because the film has uneven thickness, surface density and the like, the internal stress is difficult to release by using a common circular tube core, and the film is easy to form a circle of collapse in the film. The winding is schematically shown in FIG. 6, and the film surface is cut with a cutter 11 after winding.
The thickness and hardness of the ribs affect the stress release effect of the diaphragm, excessive stretching or crease marks are easily generated on the film surface with too thick thickness, and the stress release is not obvious even if the film surface is too thin. Parameters such as the thickness, the hardness and the like of the ribs are selected according to the size of the tube core and the material of the membrane, so that the membrane surface is kept flat under the supporting effect all the time, and the coating tension of the diaphragm is released.
The two ends of the tube core 101 are wound with the aid of the buffer rings 103 made of foam materials, the thickness of each buffer ring is 0.5-1.5 mm thicker than that of each rib, so that automatic roll changing at a high speed (not less than 100 m/min) is realized, and the production capacity is not influenced. Because the diaphragm must adopt a pinch roller in the high-speed rolling, make the last roll of diaphragms can be attached to the tube core, thus cut off and finish changing the roll while adhering to the tube core; as shown in FIG. 7, the tube core 101 of the present invention has ribs 102 on the surface, so the tube core 101 is no longer regular round, if the tube core 101 is too fast (equal to or more than 50 m/min), the pressure roller 10 will vibrate violently when approaching the winding core, resulting in the failure of roll change; therefore, the buffer rings 103 are arranged at the two ends of the tube core to provide an acting point for the pressing roller 10, the pressing roller 10 is contacted with the buffer rings 103 to eliminate the vibration caused by irregular shapes, the contact point between the pressing roller 10 and the middle part of the tube core 101 is only the highest point of the rib 102, the double faced adhesive tape is pasted at the highest point of the rib 102 to realize high-speed roll change, and the roll change can be automatically cut off even if the tube core runs at high speed.
The invention can be realized by modification on the original production line; the hot roller coating linkage can maximize the utilization temperature and tension to improve the film surface, simultaneously the elastic scraper can prolong the stable time of the coating roller, and a new drying mode is added to reduce the shaking of the non-drying section, so that the drying process is stable and efficient, the generation probability of the film surface defect is reduced, the drying efficiency is improved, and finally the irregular tube core is matched, the coating internal stress is released, so that the film surface is kept flat all the time, and the effect of improving the film surface wrinkle print in all directions is realized.
The above embodiment is a preferred embodiment of the present invention, and in other embodiments of the present invention, the number of the ribs is not limited, and ten ribs may be provided on each core; the material of rib is not restricted, and the size of rib can be selected for use according to actual need in a flexible way.
In other embodiments of the present invention, the constant force control mechanism may also adopt other structures, and the constant force control mechanism is substantially identical to the tension control mechanism, and is widely applied in the prior art, and the embodiments and the drawings are not limited.
Claims (10)
1. A method for improving the wrinkle of the membrane surface of a lithium battery diaphragm coating membrane is characterized by comprising the following steps: (1) preheating and coating linkage: preheating the base film before coating, wherein a preheating roller is close to the gravure roller during coating; (2) constant force pressure coating: when the base film is coated, a scraper of a coating device is always in contact with the roller surface of the gravure roller by using a constant force pressurizing mechanism, so that the stability of the coating is kept; (3) and (3) segmented drying: the coating film is dried in a drying oven in a segmented mode, the coating film is tightly attached to a roller during drying, the drying pressure of the front section is negative pressure, the drying pressure of the rear section is positive pressure, the drying temperature of the front section is lower than that of the rear section, the coating film is heated and relaxed through segmented drying, and wrinkling and crease are avoided; (4) releasing tension: the coating film after using the book core that the surface has the rib to dry is rolled up, and the surface of rolling up the core evenly is fixed with the rib along circumference, and the rib extends along the circumference of rolling up the core, and the surface of rib is the arcwall face, and the both ends of rib are equipped with the buffering ring of fixing respectively at book core tip, and the thickness of buffering ring is greater than the thickness of rib, and when the rolling, the membrane face is in under the effect of support all the time and keeps leveling, makes diaphragm coating tension obtain the release simultaneously.
2. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 1, is characterized in that: in the step (1), the preheating temperature of the base film is 65-80 ℃, the distance between a preheating roller and a gravure roller is less than or equal to 800mm during coating, and the wrap angle of the base film passing through the preheating roller is more than or equal to 120 degrees.
3. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 1, is characterized in that: in the step (2), the force of the scraper on the roller surface of the gravure roller is a constant value, and the precision is +/-50 gf.
4. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 1, is characterized in that: in the step (2), the constant force pressurizing mechanism comprises a pressurizing seat, a spring is arranged between the pressurizing seat and the scraper, one end of the spring is fixed on the pressurizing seat, the other end of the spring is fixed on the scraper, and a pressure test point is arranged at the position, close to the scraper, of the spring.
5. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 1, is characterized in that: the segmented drying is divided into three segments, the first segment drying temperature is 65-80 ℃, the drying pressure is-40 to-10 Pa, the second segment drying temperature is 65-90 ℃, the drying pressure is-100 to-60 Pa, the third segment drying temperature is 20-60 ℃, and the drying pressure is 20-60 Pa.
6. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 5, is characterized in that: in the second stage, the distance between the rollers is 500 +/-100 mm.
7. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 5, is characterized in that: the segmented drying is carried out in the same oven, and the length ratio of the first segment to the second segment to the third segment is 1: (1.5-2.5): 1, the total length of the oven is more than or equal to 18 m.
8. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 1, is characterized in that: the number of the ribs on the tube core is eight or ten, the ribs are foam slivers, and the buffer ring is a foam ring.
9. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 1, is characterized in that: the radian of the upper surface of each rib is 109-115 degrees, the width is larger than or equal to 45mm, the thickness is 5-15 mm, and the Shore hardness of the rib material is larger than or equal to 50.
10. The method for improving the wrinkle of the membrane surface of the lithium battery diaphragm coating membrane, according to claim 1, is characterized in that: the thickness of the buffer ring is 0.5-1.5 mm thicker than the ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110808410.9A CN113555644B (en) | 2021-07-16 | 2021-07-16 | Method for improving membrane surface crease of lithium battery membrane coating membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110808410.9A CN113555644B (en) | 2021-07-16 | 2021-07-16 | Method for improving membrane surface crease of lithium battery membrane coating membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113555644A true CN113555644A (en) | 2021-10-26 |
| CN113555644B CN113555644B (en) | 2023-05-12 |
Family
ID=78132069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110808410.9A Active CN113555644B (en) | 2021-07-16 | 2021-07-16 | Method for improving membrane surface crease of lithium battery membrane coating membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113555644B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311990A (en) * | 2022-03-10 | 2022-04-12 | 广东顺德艾司科科技股份有限公司 | Flexible pipe and two-piece can printing device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006116936A (en) * | 2004-09-24 | 2006-05-11 | Fuji Photo Film Co Ltd | Casting film forming method |
| CN203283926U (en) * | 2012-12-28 | 2013-11-13 | 深圳市光泓数控设备有限公司 | Membrane tension force adjusting device |
| JP2014133608A (en) * | 2013-01-08 | 2014-07-24 | Fuji Iron Works Co Ltd | Rewinding device |
| JP3200506U (en) * | 2015-08-04 | 2015-10-22 | 株式会社不二鉄工所 | Film winder |
| CN206022493U (en) * | 2016-09-13 | 2017-03-15 | 河北金力新能源科技股份有限公司 | A kind of coating unit of high temperature resistance multilayer composite lithium ion cell barrier film |
| CN108189430A (en) * | 2018-01-03 | 2018-06-22 | 广东骏东科技有限公司 | A kind of composite diaphragm for lithium battery coating and recovery system |
| CN109174589A (en) * | 2018-09-19 | 2019-01-11 | 贵州鑫米新能源材料有限公司 | A kind of low-cost high-quality lithium ion battery separator coating processes |
| CN109514991A (en) * | 2018-12-30 | 2019-03-26 | 张家港康得新光电材料有限公司 | A kind of scraper clamp device and its scraping fluid method, alignment film printing machine |
| CN210682836U (en) * | 2019-06-06 | 2020-06-05 | 河源安诺捷新能源科技有限公司 | Roll core for improving flatness |
| CN112794165A (en) * | 2021-01-19 | 2021-05-14 | 江苏厚生新能源科技有限公司 | Method for reducing rolling deformation of main line base film |
-
2021
- 2021-07-16 CN CN202110808410.9A patent/CN113555644B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006116936A (en) * | 2004-09-24 | 2006-05-11 | Fuji Photo Film Co Ltd | Casting film forming method |
| CN203283926U (en) * | 2012-12-28 | 2013-11-13 | 深圳市光泓数控设备有限公司 | Membrane tension force adjusting device |
| JP2014133608A (en) * | 2013-01-08 | 2014-07-24 | Fuji Iron Works Co Ltd | Rewinding device |
| JP3200506U (en) * | 2015-08-04 | 2015-10-22 | 株式会社不二鉄工所 | Film winder |
| CN206022493U (en) * | 2016-09-13 | 2017-03-15 | 河北金力新能源科技股份有限公司 | A kind of coating unit of high temperature resistance multilayer composite lithium ion cell barrier film |
| CN108189430A (en) * | 2018-01-03 | 2018-06-22 | 广东骏东科技有限公司 | A kind of composite diaphragm for lithium battery coating and recovery system |
| CN109174589A (en) * | 2018-09-19 | 2019-01-11 | 贵州鑫米新能源材料有限公司 | A kind of low-cost high-quality lithium ion battery separator coating processes |
| CN109514991A (en) * | 2018-12-30 | 2019-03-26 | 张家港康得新光电材料有限公司 | A kind of scraper clamp device and its scraping fluid method, alignment film printing machine |
| CN210682836U (en) * | 2019-06-06 | 2020-06-05 | 河源安诺捷新能源科技有限公司 | Roll core for improving flatness |
| CN112794165A (en) * | 2021-01-19 | 2021-05-14 | 江苏厚生新能源科技有限公司 | Method for reducing rolling deformation of main line base film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311990A (en) * | 2022-03-10 | 2022-04-12 | 广东顺德艾司科科技股份有限公司 | Flexible pipe and two-piece can printing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113555644B (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102371229A (en) | Novel coating machine | |
| CN113555644A (en) | Method for improving wrinkle print of membrane surface of lithium battery diaphragm coating membrane | |
| CN114277608B (en) | Five-roller coating machine and coating method thereof | |
| CN208411031U (en) | A kind of back painting make-up machine of adhesive sticker protective film | |
| CN212151035U (en) | Super online diaphragm coating machine | |
| CN210478064U (en) | Coating machine for preparing aromatic heterocyclic polymer film | |
| CN2848568Y (en) | Digital code ink jet printing machine | |
| CN201517185U (en) | Hot-air blower and composite device of heat-sensitive art paper composite coating machine | |
| CN208878965U (en) | Porous substrate apparatus for coating | |
| CN208682334U (en) | A kind of automatic temperature control device based on laminating machine | |
| CN208146336U (en) | A kind of roll-to-roll coating machine with two-way coating function | |
| CN208732249U (en) | A kind of coating machine winding micromatic setting | |
| JP2021034227A5 (en) | ||
| CN201099804Y (en) | Micanite paper sizing machine | |
| CN209577191U (en) | It is a kind of to smear uniform coating machine | |
| CN201949999U (en) | Photographic paper coating machine | |
| CN206940039U (en) | A kind of double roller deviation correcting device of coating machine | |
| CN207159704U (en) | A kind of type gate roller coat leftover of bolt of cloth | |
| CN202943000U (en) | Novel gluing and coating device | |
| CN209888351U (en) | Dry part and adopt reel formula laminating machine of this part | |
| CN109807009A (en) | A kind of roll-to-roll coating apparatus of substrate | |
| CN209697325U (en) | A kind of precision coating machine | |
| CN215550316U (en) | Extrusion compounding machine with pre-coating and post-coating functions and staged post-heating and cooling functions | |
| CN214447673U (en) | Bulletproof prepreg manufacturing equipment | |
| CN205836277U (en) | Digital guide belt printing machine |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |