CN220479304U - Film coating system - Google Patents
Film coating system Download PDFInfo
- Publication number
- CN220479304U CN220479304U CN202321980586.3U CN202321980586U CN220479304U CN 220479304 U CN220479304 U CN 220479304U CN 202321980586 U CN202321980586 U CN 202321980586U CN 220479304 U CN220479304 U CN 220479304U
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- Prior art keywords
- film
- flattening
- straight line
- coating system
- film coating
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- 239000007888 film coating Substances 0.000 title claims abstract description 34
- 238000009501 film coating Methods 0.000 title claims abstract description 34
- 238000000576 coating method Methods 0.000 claims abstract description 45
- 239000011248 coating agent Substances 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000010408 film Substances 0.000 claims description 84
- 239000010409 thin film Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The application belongs to the technical field of film coating. The application discloses a film coating system, which is used for carrying out coating treatment on a film, and sequentially comprises a longitudinal stretching device, a coating device and a transverse stretching device along the conveying direction of the film; the coating device is arranged at one end of the longitudinal stretching device; the transverse stretching device is arranged at one end of the coating device, which is far away from the longitudinal stretching device; the film coating system also comprises a flattening device, wherein the flattening device is arranged between the coating device and the transverse stretching device; the method comprises the steps of defining a plane where a film is located as a preset plane, defining a first straight line which is in the preset plane and perpendicular to the conveying direction of the film, and enabling the flattening device to comprise at least one pair of flattening roller groups for flattening the film, wherein the flattening roller groups are distributed on two sides of the film along the direction of the first straight line. According to the application, the flattening device is arranged, so that the stability of the coating state of the film coating system is improved.
Description
Technical Field
The application belongs to the technical field of film coating, and particularly relates to a film coating system.
Background
With the continuous rise of demands for consumer electronic products such as televisions, computers, mobile phones, etc., demands for optical films applied to display panels are also increasing.
The optical film adopted in the prior art is usually a BOPET film (biaxially oriented polyester film), and the BOPET film has excellent mechanical property and thermal property and excellent optical property. The production of optical grade BOPET films typically requires in-line coating to enhance the optical properties of the film.
However, in the process of implementing the technical scheme in the embodiment of the present application, the applicant finds that at least the following technical problems exist in the above technology:
on the traditional production line, the flattening roller, the coating device, the transverse stretching device and the like are designed as a whole, and the chain clamps in the transverse stretching device can inevitably shake in the process of high-speed running of the film with uneven edges clamped by the chain clamps. The vibration of the film surface can be transmitted to a coating device, so that the stability of the coating point position is affected, defects such as longitudinal stripes, uneven coating and the like can be caused in coating, and the coating quality is poor.
Disclosure of Invention
The application provides a film coating system, has solved the problem that the membrane face shake can transmit to coating unit in the horizontal stretching device, guarantees that coating unit's coating state is relatively stable.
The application provides a film coating system for coating a film; along the conveying direction of the film, the film coating system sequentially comprises a longitudinal stretching device, a coating device and a transverse stretching device; the coating device is arranged at one end of the longitudinal stretching device; the transverse stretching device is arranged at one end of the coating device, which is far away from the longitudinal stretching device; the film coating system also comprises a flattening device, wherein the flattening device is arranged between the coating device and the transverse stretching device; the method comprises the steps of defining a plane where a film is located as a preset plane, defining a first straight line which is in the preset plane and perpendicular to the conveying direction of the film, and enabling the flattening device to comprise at least one pair of flattening roller groups for flattening the film, wherein the flattening roller groups are distributed on two sides of the film along the direction of the first straight line.
Further, the flattening device further comprises a base and brackets connected to two ends of the base, and the flattening roller set is connected to the top ends of the brackets.
Further, a second straight line parallel to the extending direction of the support is defined, and the flattening roller set is slidingly connected to the support along the direction of the second straight line.
Further, the support is provided with a sliding rail which is used for adjusting the height of the flattening roller set and extends along the direction of the second straight line.
Further, the base extends along the direction of the first straight line, and the support is connected to the base in a sliding manner along the direction of the first straight line.
Further, a guide rail for adjusting the distance between the adjacent brackets and extending along the direction of the first straight line is arranged on the base.
Further, the length of the nip roller in the direction of the first straight line is 75mm or more and 150mm or less.
Further, the nip roll set includes at least one pair of nip rolls disposed in parallel with each other, the nip rolls being offset in the conveying direction of the film.
Further, the nip rolls are distributed in the up-down direction, and a gap allowing the film to pass through is included between the nip rolls.
Further, the flattening roller group comprises flattening rollers, and an included angle between the extending direction of the flattening rollers and the first straight line is more than or equal to 0 degrees and less than or equal to 20 degrees.
Further, the flattening roller set also comprises an adjusting mechanism for adjusting the included angle between the extending direction of the flattening roller and the first straight line
The application provides a film coating system has set up flattening device between horizontal stretching device and coating unit, can weaken by a wide margin when making the shake of film among the horizontal stretching device transmit to flattening device, guarantees that the wear surface of the film between flattening device and the stretching device is steady relatively, improves film coating system coating state's stability.
Drawings
FIG. 1 is a schematic diagram of a film coating system according to one embodiment of the present application;
FIG. 2 is a schematic top view of a flattening device in one embodiment of the present application;
FIG. 3 is a schematic diagram of a front view of a flattening device in one embodiment of the present application;
FIG. 4 is a schematic side view of a flattening device in one embodiment of the present application;
FIG. 5 is a schematic top view of a flattening device in another embodiment of the present application;
fig. 6 is an enlarged view of a portion a in fig. 5.
In the figure: film coating system 100, longitudinal stretching device 11, coating device 12, transverse stretching device 13, flattening device 14, flattening roller set 141, flattening roller 1411, gap 1412, base 142, bracket 143, slide 1431, driving mechanism 144, driving assembly 1441, driving rod 1442, adjusting mechanism 145; film 200, film conveying direction 101, preset plane 102, first straight line 103, second straight line 104.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.
The embodiment of the present application provides a film coating system 100 as shown in fig. 1 for performing a coating process on a film 200, where the film coating system 100 includes a longitudinal stretching device 11, a coating device 12, and a transverse stretching device 13 in this order along a conveying direction 101 of the film 200. The coating device 12 is provided at one end of the longitudinal stretching device 11. The transverse stretching device 13 is provided at an end of the coating device 12 remote from the longitudinal stretching device 11. The longitudinal stretching device 11 is used for longitudinally stretching the preliminarily formed film 200. The coating device 12 is disposed between the longitudinal stretching device 11 and the transverse stretching device 13, and can perform online coating on the film 200 after longitudinal stretching to give the film 200 corresponding performance. The transverse stretching device 13 is used for transversely stretching the coated film 200. Film coating system 100 also includes a flattening device 14, with flattening device 14 being disposed between coating device 12 and lateral stretching device 13. Flattening device 14 is used to initially flatten film 200. As shown in fig. 2, the plane in which the film 200 is defined as a preset plane 102, and a first straight line 103 which is within the preset plane 102 and is perpendicular to the conveying direction 101 of the film 200 is defined, and the flattening device 14 includes at least one pair of flattening roller sets 141 for flattening the film 200, where the flattening roller sets 141 clamp the edge of the film 200 to flatten the film 200, so that the film 200 is stretched in the direction of the first straight line 103, and the film 200 is prevented from wrinkling. The flattening roller sets 141 are distributed on both sides of the film 200 in the direction of the first straight line 103. When the transverse stretching device 13 rotates at a high speed while holding the film 200 with uneven edges, the transverse stretching device 13 inevitably shakes, and the shake is transferred to the coating device 12 along the device or the film surface, thereby affecting the stability of the coating point. According to the embodiment of the application, the flattening device 14 is independently arranged, the flattening device 14 clamps the edge of the film 200 through the flattening roller set 141, shaking of the film 200 is greatly weakened after being transferred to the flattening roller set 141 along the film 200, the abrasion surface of the film 200 between the flattening device 14 and the coating device 12 is ensured to be kept relatively stable, and the stability of the coating state of the film 200 is improved.
As an alternative embodiment, as shown in FIG. 3, the flattening device 14 further includes a base 142 and brackets 143 connected to both ends of the base 142, and the flattening roller set 141 is connected to the top ends of the brackets 143. The flattening device 14 is provided with an independent base 142 and a bracket 143, and the bracket 143 is connected with the flattening roller set 141 and the base 142 to ensure the structural stability of the flattening device 14. The base 142 is used for supporting the support 142, so that the flattening device 14 is ensured to be more stable, and the cushioning capability of the flattening device 14 is improved.
As an alternative embodiment, a second straight line 104 is defined parallel to the extension direction of the bracket 143. The bracket 143 extends substantially in the up-down direction, and the second straight line 104 also extends substantially in the up-down direction. The support 143 is provided with a sliding rail 1431, and the sliding rail 1431 extends substantially along the direction of the second straight line 104. The slide rails 1431 are used to adjust the height of the flattening roller set 141. The flattening roller set 141 is slidably connected to the slide rails 1431 of the bracket 143 in the direction of the second straight line 104. The flattening roller set 141 can move along the sliding rail 1431 in the direction of the second straight line 104, so that the height of the flattening roller set 141 can be adjusted, and convenience is provided for films 200 with different processes.
As an alternative embodiment, as shown in FIG. 4, flattening device 14 also includes a drive mechanism 144. The driving mechanism 144 can drive the flattening roller set 141 to move along the sliding rail 1431, so that the height of the flattening roller set 141 is easy to control. The drive mechanism 144 includes at least one of a manual drive mechanism or an electronically controlled drive mechanism, which is more simple and convenient. The electric driving mechanism has higher precision, so that the heights of the flattening roller groups 141 distributed on the two sides of the film 200 are consistent, the flatness of the film 200 is improved, and the shaking of the film surface of the film 200 is reduced.
As an alternative embodiment, drive mechanism 144 includes a drive assembly 1441 and a drive rod 1442, with one end of drive rod 1442 connected to drive assembly 1441 and one end of drive rod 1442 remote from drive assembly 1441 connected to nip roll set 141. The driving component 1441 may drive the driving rod 1442 to move, where the driving rod 1442 is connected to the flattening roller set 141, and the driving rod 1442 may drive the flattening roller set 141 to move along the sliding rail 1431 in the direction of the second straight line 104. The driving assembly 1441 is simple to operate, high in precision and easy to control the height of the flattening roller set 141, and can ensure that the heights of the flattening roller sets 141 on two sides of the film 200 are consistent, so that the film surface of the film 200 is smoother.
As an alternative embodiment, the base 142 extends in the direction of the first line 103, and a guide rail 1421 is provided on the base, and the guide rail 1421 extends substantially in the direction of the first line 103. The guide rails 1421 serve to adjust the distance between the adjacent brackets 143. The bracket 143 is slidably coupled to the rail 1421 of the base 142 in the direction of the first line 103. The support 143 can move along the guide rail 1421 in the direction of the first straight line 103, so that the flattening roller set 141 at the top end of the support 143 can clamp films 200 with different widths, and the application range of the flattening device 14 is improved.
As an alternative embodiment, as shown in fig. 4, the nip roller set 141 includes at least a pair of nip rollers 1411 disposed parallel to each other. The flattening rollers 1411 are distributed in the up-down direction to pinch the edges of the film 200. The flattening device 14 is located between the coating device 12 and the transverse stretching device 13, the film 200 is a film 200 which has not been dried immediately after coating, and the contact area between the flattening roller set 141 and the film 200 can be reduced by clamping the film edges by the flattening rollers 1411 which are arranged in parallel, so that the film surface of the film 200 is prevented from being damaged. Nip rollers 1411 include a gap 1412 therebetween for allowing film 200 to pass therethrough, and by adjusting the size of gap 1412, nip 14 can be configured to hold films 200 of different thicknesses, allowing nip 14 to accommodate different film coating systems 100.
As an alternative embodiment, the length of the nip roller 1411 in the direction of the first straight line 103 is 75mm or more and 150mm or less. Ensuring that nip rolls 1411 are capable of gripping films 200 of different widths increases the range of application of nip 14. The length of the flattening roller 1411 in the direction of the first straight line 103 is equal to or greater than 75mm and equal to or less than 150mm, and the length of the flattening roller 1411 in contact with the film surface of the film 200 is also equal to or greater than 30mm and equal to or less than 50mm, so that the flattening roller group 141 can clamp the film 200 and prevent the film surface of the film 200 that is not dried from being damaged, and specifically, the flattening roller 1411 of an appropriate size can be selected according to the width of the film 200.
As an alternative embodiment, as shown in fig. 5, nip roll 1411 is offset in the transport direction 101 of film 200, ensuring that nip roll 1411 is able to grip film 200, reducing the jitter transferred to coating device 12. The offset of the flattening roller 1411 in the transport direction 101 of the film 200 also ensures that the film 200 does not buckle during transport, preventing buckling from adversely affecting subsequent transverse stretching and drying.
As an alternative embodiment, the angle between the extending direction of the nip roller 1411 and the first straight line 103 is 0 ° or more and 20 ° or less. The film edge can be clamped by the flattening roller set 141, so that the clamping state of the flattening roller 1411 is more stable, the vibration can be greatly weakened when transmitted to the flattening roller set 141, the grinding surface of the film 200 between the flattening device 14 and the stretching device is relatively stable, and the coating state of the film coating system 100 is relatively stable. Further, an angle between the extending direction of the nip roller 1411 and the first straight line 103 is 0 ° or more and 15 ° or less. Further, an angle between the extending direction of the nip roller 1411 and the first straight line 103 is 0 ° or more and 13 ° or less.
As an alternative embodiment, as shown in fig. 6, the nip roll set 141 further includes an adjusting mechanism 145 for adjusting an angle between the extending direction of the nip roll 1411 and the first straight line 103, and the adjusting mechanism 145 facilitates control of an angle between the extending direction of the nip roll 1411 and the first straight line 103, thereby facilitating the film 200 of different processes.
As an alternative embodiment, the support 143 is provided with a scale, which can accurately display the height of the driving rod 1442, and the driving assembly 1441 moves the driving rods 1442 on two sides of the film 200 to the same position of the scale, so that the flattening roller sets 141 on two sides of the film 200 can be ensured to be at the same height.
In summary, in the embodiment of the present application, the flattening device is disposed between the coating device and the transverse stretching device. The flattening device is stable in structure and is independently arranged, and the shaking of the transverse stretching device has small influence on the flattening device. The flattening device clamps the edge of the film through the flattening roller group, and the vibration of the film in the transverse stretching device is greatly weakened when transmitted to the flattening device, so that the grinding surface of the film between the flattening device and the stretching device is relatively stable, and the coating state of the film coating system is relatively stable.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (10)
1. A film coating system for performing a coating process on a film, the film coating system comprising, in order along a conveying direction of the film:
a longitudinal stretching device;
the coating device is arranged at one end of the longitudinal stretching device;
the transverse stretching device is arranged at one end, far away from the longitudinal stretching device, of the coating device;
the method is characterized in that:
the film coating system further comprises a flattening device, wherein the flattening device is arranged between the coating device and the transverse stretching device; the method comprises the steps of defining a plane where a film is located as a preset plane, defining a first straight line which is in the preset plane and perpendicular to the conveying direction of the film, wherein the flattening device comprises at least one pair of flattening roller groups for flattening the film, and the flattening roller groups are distributed on two sides of the film along the direction of the first straight line.
2. The film coating system of claim 1, wherein:
the flattening device further comprises a base and supports connected to two ends of the base, and the flattening roller set is connected to the top ends of the supports.
3. The film coating system of claim 2, wherein:
defining a second straight line parallel to the extending direction of the bracket, wherein the flattening roller set is connected to the bracket in a sliding way along the direction of the second straight line.
4. A film coating system as set forth in claim 3, wherein:
the support is provided with a sliding rail which is used for adjusting the height of the flattening roller set and extends along the direction of the second straight line.
5. The film coating system of claim 2, wherein:
the base extends along the direction of the first straight line, and the support is connected to the base in a sliding mode along the direction of the first straight line.
6. The film coating system of claim 5, wherein:
the base is provided with a guide rail which is used for adjusting the distance between the adjacent brackets and extends along the direction of the first straight line.
7. The film coating system of claim 1, wherein:
the nip roll set includes at least one pair of nip rolls disposed parallel to each other, the nip rolls being offset in a conveying direction of the film.
8. The film coating system of claim 7, wherein:
the flattening rollers are distributed in the up-down direction, and gaps allowing the thin film to pass through are formed between the flattening rollers.
9. The film coating system of claim 1, wherein:
the flattening roll set comprises flattening rolls, and an included angle between the extending direction of the flattening rolls and the first straight line is more than or equal to 0 degree and less than or equal to 20 degrees.
10. The film coating system of claim 9, wherein:
the flattening roller set further comprises an adjusting mechanism for adjusting an included angle between the extending direction of the flattening roller and the first straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321980586.3U CN220479304U (en) | 2023-07-26 | 2023-07-26 | Film coating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321980586.3U CN220479304U (en) | 2023-07-26 | 2023-07-26 | Film coating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220479304U true CN220479304U (en) | 2024-02-13 |
Family
ID=89836228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321980586.3U Active CN220479304U (en) | 2023-07-26 | 2023-07-26 | Film coating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220479304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118061596A (en) * | 2024-04-17 | 2024-05-24 | 杭州邦林粘合科技有限公司 | Heat sealing device, heat sealing method and bag making machine |
-
2023
- 2023-07-26 CN CN202321980586.3U patent/CN220479304U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118061596A (en) * | 2024-04-17 | 2024-05-24 | 杭州邦林粘合科技有限公司 | Heat sealing device, heat sealing method and bag making machine |
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