CN102303388A - Method for adhesive tape treatment in production of thin film by casting machine - Google Patents
Method for adhesive tape treatment in production of thin film by casting machine Download PDFInfo
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- CN102303388A CN102303388A CN201110286364A CN201110286364A CN102303388A CN 102303388 A CN102303388 A CN 102303388A CN 201110286364 A CN201110286364 A CN 201110286364A CN 201110286364 A CN201110286364 A CN 201110286364A CN 102303388 A CN102303388 A CN 102303388A
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- adhesive tape
- hydrostomia
- steel band
- speed
- die head
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- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention discloses a method for adhesive tape treatment in the production of thin film by a casting machine. On the surface of a steel tape, both the temperature in a viscosity drying tunnel for polyamic acid resin solution and the wind velocity at the outlet of a nozzle are regulated to a best state, the stripping condition of thin film at the steel tape where a front drum operates is detected, the speed of the steel tape is decreased when the adhesive tape width at one or two sides of the steel tape is more than 5.0mm, the speed of the steel tape is increased when the adhesive tape width at one or two sides of the steel tape is not more than 3.0mm, and the speed of the steel tape is decreased or increased when the adhesive tape width at one or two sides of the steel tape is in a range from 3.0 to 5.0mm. The increase or decrease for the speed of the steel tape is conducted in multiple steps, and the amplitude of each adjustment is from 0.1 to 1.5m/min, which is within the normal speed range of the steel tape. In order to keep the solvent content of a semi-finished thin film unchanged, the temperature of the drying tunnel and/or the wind velocity at the outlet of the nozzle of a plenum chamber is regulated during speed adjustment of the steel tape. The lip opening of a casting die head can also be regulated during speed adjustment of the steel tape to eliminate the adhesive tape, and the increase or decrease for the lip opening of the die head can be conducted in multiple steps as well. The method of the invention can eliminate the adhesive tape rapidly to enable the casting machine to operate normally.
Description
(1) technical field
The present invention relates to slobbering machine film production process technology, be specially a kind of slobbering machine film production adhesive tape processing method.
(2) background technology
The problem of liquid film adhesive tape appears in regular meeting in the slobbering machine film production film-forming process; Though the steel strip surface cleannes are optimum state; Also in optimum range, steel band speed is in the normal range (NR) for the viscosity of polyamic acid resin solution and drying tunnel temperature, still is difficult to avoid the appearance of adhesive tape.Particularly use extrusion die directly resin solution hydrostomia liquid film on steel band to be shaped; The semi-finished product film adhesive tape may occur in position, steel band both sides of the edge when peeling off; Width even can reach 10 millimeters when adhesive tape is serious, influence oven dry rear film semi-finished product are in the serialization production application of follow-up workshop section to a great extent.If can not solve adhesive tape as quickly as possible, the every fortune of steel band circles, and the width of adhesive tape, thickness cause both sides or one-sided edge damage all in accumulative total, not only waste material, also cause follow-up workshop section can't get into normal operation.
(3) summary of the invention
The objective of the invention is to design a kind of slobbering machine film production adhesive tape processing method, according to the width adjustment steel belt operating speed of adhesive tape, to eliminate adhesive tape.
The slobbering machine film production adhesive tape processing method of the present invention's design; The cleaning steel strip surface; The viscosity of regulating polyamic acid resin solution is 2.0～15.0 ten thousand centipoises; Temperature is 150.0～240.0 ℃ in the adjustment drying tunnel; Adjustment plenum chamber jet expansion hot blast wind speed is 15.0～55.0m/s; The lip aperture of hydrostomia die head is 40～65 μ m; The steel band normal running speed is 3.5～8.0m/min; Steel band speed is set at 5.0m/min and begins hydrostomia; Detect film at preceding drum operation steel band place and peel off situation; When steel band one or both sides adhesive tape width greater than 5.0mm; Reduce the current speed of service of steel band, the adhesive tape width is less than or equal to 3.0mm when the steel band one or both sides, improves the current speed of service of steel band; When steel band one or both sides adhesive tape width is 3.0～5.0mm, reduce or improve the current speed of service of steel band.
The reduction of speed or the speedup of said steel band operation are carried out several times; The amplitude of each adjustment is 0.1～1.5m/min; Drum operation steel band place film was peeled off situation before steel band moved and detects once more in a week after the steel band speed governing; If there has not been adhesive tape; Then keep current steel belt operating speed to produce; If also have adhesive tape, then continue reduction of speed or speedup.Reduction of speed or speedup all are no more than steel band normal running speed scope.
During the steel band speed governing, regulate plenum chamber jet expansion wind speed in hydrostomia drying tunnel temperature and/or the hydrostomia drying tunnel so that the solvent of dry later half finished films remains between 28.0%～32.0%.During the steel band reduction of speed, reduce the hydrostomia drying tunnel temperature and/or reduce plenum chamber jet expansion wind speed in the hydrostomia drying tunnel; During the steel band speedup, plenum chamber jet expansion wind speed in rising hydrostomia drying tunnel temperature and/or the increase hydrostomia drying tunnel.
When regulating steel belt operating speed, the lip aperture that can also adjust the hydrostomia die head is to eliminate adhesive tape.The lip aperture adjustable extent of hydrostomia die head is 30～75 μ m, when steel band one or both sides adhesive tape width greater than 5.0mm, and still have adhesive tape after reducing steel belt operating speed, reduce the lip aperture of current this side of hydrostomia die head or bilateral; The adhesive tape width is less than or equal to 3.0mm when the steel band one or both sides, and still has adhesive tape after improving steel belt operating speed, increases the lip aperture of current this side of hydrostomia die head or bilateral; After steel band one or both sides adhesive tape width is 3.0～5.0mm, reduces the current speed of service of steel band, still have adhesive tape, reduce the lip aperture of current this side of hydrostomia die head or bilateral; After steel band one or both sides adhesive tape width is 3.0～5.0mm, improves the current speed of service of steel band, still have adhesive tape, increase the lip aperture of current this side of hydrostomia die head or bilateral.
The increase and decrease of said hydrostomia die head lip aperture is divided into repeatedly to be carried out; The amplitude of each adjustment is 5～12 μ m; Drum operation steel band place film was peeled off situation before lip aperture adjustment back steel band moved and detects once more in a week; If do not have adhesive tape, then keep current hydrostomia die head lip aperture and steel belt operating speed to produce; If also have adhesive tape, then continue to adjust hydrostomia die head lip aperture once more or regulate steel belt operating speed.The adjustment of hydrostomia die head lip aperture all is no more than hydrostomia die head lip aperture adjustable extent.
When die head lip aperture is regulated, regulate plenum chamber jet expansion wind speed in hydrostomia drying tunnel temperature and/or the hydrostomia drying tunnel, so that the solvent of dry later half finished films remains between 28.0%～32.0%.When reducing die head lip aperture, reduce the hydrostomia drying tunnel temperature and/or reduce plenum chamber jet expansion wind speed in the hydrostomia drying tunnel; When increasing die head lip aperture, plenum chamber jet expansion wind speed in rising hydrostomia drying tunnel temperature and/or the increase hydrostomia drying tunnel.
The advantage of slobbering machine film production adhesive tape processing method of the present invention is: 1, can eliminate adhesive tape rapidly, make slobbering machine get into normal operation, reduce the test run cost, improve the slobbering machine operational efficiency; 2, easy operating, simple and practical.
(4) specific embodiment
Slobbering machine film production adhesive tape processing method embodiment 1
Before this example is driven; Shovel through copper; Copper wire balls; Acetone; Instrument such as alcohol and silk cleaning steel strip surface; Make the no cured resin particles of steel strip surface (particularly locating about the 100mm of steel band both sides of the edge); Foreign matters such as impurity; Regulate viscosity 4.93 ten thousand centipoises of polyamic acid resin solution; Temperature is 200.0 ℃ ± 2.0 ℃ in the adjustment drying tunnel; The hot blast wind speed is 35.0m/s ± 2.0m/s; The lip adjustable extent of this routine hydrostomia die head is 30～75 μ m; The adjustment aperture is 50 μ m during driving; The steel band normal running speed is 3.5～8.0m/min; Steel band speed is set at 5.0m/min during driving; The beginning hydrostomia; Steel band moves a week; Detect film at preceding drum operation steel band place and peel off situation; Find that steel band one side adhesive tape width is 5.5mm; Opposite side adhesive tape width is 6.0mm; It is 4.8m/min that steel belt operating speed is slowed down by current 5.0m/min, and reducing the hydrostomia drying tunnel temperature simultaneously is 197.0 ℃ ± 2.0 ℃; One week of steel band operation, the back found that steel band both sides adhesive tape width all is kept to 4.1mm, and it is 4.6m/min that steel belt operating speed is continued to slow down by 4.8m/min again, and reducing the hydrostomia drying tunnel temperature simultaneously is 195.0 ℃ ± 2.0 ℃; Detect the both sides adhesive tape once more and all be kept to 2.8 millimeters, continue 2 times afterwards again and slow down, steel band speed reduces to 4.0m/min, and reducing the hydrostomia drying tunnel temperature simultaneously is 191.0 ℃ ± 2.0 ℃, no longer adhesive tape.Maintenance steel band speed is that the lip aperture of 4.0m/min, hydrostomia die head is 50 μ m, and slobbering machine gets into normal operation, and gained film solvent is 28.2%.
Slobbering machine film production adhesive tape processing method embodiment 2
The relevant parameter of this routine slobbering machine is identical with embodiment 1; Before the driving; Adjustment hydrostomia die head lip aperture was 55 μ m when this example was driven; Steel band speed is set at 5.0m/min; Find behind the beginning hydrostomia that steel band both sides adhesive tape width is 2.7mm; Steel belt operating speed is 5.5m/min by current 5.0m/min speedup, and plenum chamber jet expansion wind speed increases to 37.0m/s ± 1.5m/s by current 35.0m/s ± 2.0m/s in the hydrostomia drying tunnel; One week of steel band operation back discovery steel band, one side adhesive tape width is kept to 2.1mm, opposite side adhesive tape width is kept to 1.9mm; Steel belt operating speed is 6.8m/min by the 5.5m/min speedup again, again plenum chamber jet expansion wind speed in the hydrostomia drying tunnel is increased to 43.0m/s ± 1.5m/s; Detect once more that a side adhesive tape width is kept to 0.6mm, opposite side adhesive tape width is kept to 0.5mm, speedup is to 8.0m/min again for steel band afterwards, and plenum chamber jet expansion wind speed increases to 48.0m/s ± 1.5m/s in the hydrostomia drying tunnel, no longer adhesive tape; Maintenance steel band speed is that the lip aperture of 8.0m/min, hydrostomia die head is 55 μ m, and slobbering machine gets into normal operation.Gained film solvent is 31.6%.
Slobbering machine film production adhesive tape processing method embodiment 3
The relevant parameter of this routine slobbering machine is identical with embodiment 1; Before the driving; Adjustment hydrostomia die head lip aperture was 65 μ m when this example was driven; Steel band speed is set at 5.0m/min; Find that steel band one side adhesive tape width is that 8.2mm, opposite side adhesive tape width are 7.9mm behind the beginning hydrostomia; It is 4.2m/min that steel belt operating speed is slowed down by current 5.0m/min, simultaneously the hydrostomia drying tunnel is reduced to 195.0 ℃ ± 2 ℃ by 200.0 ℃ ± 2.0 ℃ of Current Temperatures; One week of steel band operation back discovery steel band, one side adhesive tape width is kept to 5.6mm, opposite side adhesive tape width is kept to 4.8mm; Steel belt operating speed is decelerated to 3.5m/min by 4.2m/min again, and plenum chamber jet expansion wind speed reduces to 26.0m/s ± 2.0m/s in the hydrostomia drying tunnel simultaneously; Detecting a side adhesive tape once more is kept to 1.7mm, opposite side and has not had adhesive tape; Regulate the lip aperture that die head still has adhesive tape one side this moment; Reduce to 55 μ m by 65 μ m; The hydrostomia drying tunnel temperature reduces to that plenum chamber jet expansion wind speed reduces to 22.0m/s ± 1.5m/s in 192.0 ℃ ± 2 ℃ and the hydrostomia drying tunnel, no longer adhesive tape; Keep current steel belt operating speed 3.9m/min, die head lip aperture one side is that 55 μ m, opposite side are 65 μ m, and slobbering machine gets into normal operation.Gained film solvent is 28.5%.
Slobbering machine film production adhesive tape processing method embodiment 4
The relevant parameter of this routine slobbering machine is identical with embodiment 1; Before the driving; Adjustment hydrostomia die head lip aperture was 40 μ m when this example was driven; Steel band speed is set at 5.0m/min; Find that steel band one side adhesive tape width is that 4.2mm, opposite side adhesive tape width are 4.8mm behind the beginning hydrostomia; Steel belt operating speed is 5.8m/min by current 5.0m/min speedup, and the hydrostomia drying tunnel temperature increases to 203.0 ℃ ± 2 ℃ simultaneously; One week of steel band operation, the back found that steel band one side adhesive tape width is kept to 2.8mm, opposite side adhesive tape width is kept to 3.2mm, and regulate die head both sides lip aperture this moment, increases to 55 μ m by 40 μ m, and the hydrostomia drying tunnel temperature increases to 205.0 ℃ ± 2 ℃ simultaneously; Both sides, steel band operation one week back adhesive tape all is kept to 1.5mm, again with the steel band speedup to 7.2m/min, plenum chamber jet expansion wind speed increases to 38.0m/s ± 1.5m/s in the hydrostomia drying tunnel simultaneously, no longer adhesive tape; Keep current steel belt operating speed 7.2m/min, die head lip aperture 55 μ m, slobbering machine gets into normal operation.Gained film solvent is 30.2%.
Slobbering machine film production adhesive tape processing method embodiment 5
The relevant parameter of this routine slobbering machine is identical with embodiment 1; Before the driving; Adjustment hydrostomia die head lip aperture was 48 μ m when this example was driven; Steel band speed is set at 5.0m/min; Find that steel band one side adhesive tape width is that 3.5mm, opposite side adhesive tape width are 4.1mm behind the beginning hydrostomia; It is 4.5m/min that steel belt operating speed is slowed down by current 5.0m/min, and the hydrostomia drying tunnel temperature reduces to that plenum chamber jet expansion wind speed reduces to 33.0m/s ± 2.0m/s in 199.0 ℃ ± 2.0 ℃ and the hydrostomia drying tunnel simultaneously; Steel band one side adhesive tape width is kept to 1.9mm after one week of steel band operation, opposite side adhesive tape width is kept to 2.4mm, and regulate die head both sides lip aperture this moment, reduces to 42 μ m by 48 μ m, and the hydrostomia drying tunnel temperature is reduced to 197 ℃ ± 2.0 ℃ simultaneously; Both sides, steel band operation one week back adhesive tape all is kept to 0.8mm; Again steel band is decelerated to 3.5m/min; Plenum chamber jet expansion wind speed reduces to 29.0m/s ± 1.5m/s in the hydrostomia drying tunnel simultaneously; Both sides are adhesive tape no longer all; Keep current steel belt operating speed 3.5m/min, die head lip aperture 42 μ m, slobbering machine gets into normal operation.Gained film solvent is 29.1%.
The foregoing description only is a concrete example to the object of the invention, technical scheme and beneficial effect further explain, and the present invention is defined in this.All any modifications of within scope of disclosure of the present invention, being made, be equal to replacement, improvement etc., all be included within protection scope of the present invention.
Claims (6)
1. slobbering machine film production adhesive tape processing method; The cleaning steel strip surface; The viscosity of regulating polyamic acid resin solution is 2.0～15.0 ten thousand centipoises; Temperature is 150.0～240.0 ℃ in the adjustment drying tunnel; Adjustment plenum chamber jet expansion hot blast wind speed is 15.0～55.0m/s, and the lip aperture of hydrostomia die head is 40～65 μ m, and the steel band normal running speed is 3.5～8.0m/min; Steel band speed is set at 5.0m/min and begins hydrostomia, it is characterized in that:
Detect film at preceding drum and peel off situation, when steel band one or both sides adhesive tape width greater than 5.0mm, reduce the current speed of service of steel band; The adhesive tape width is less than or equal to 3.0mm when the steel band one or both sides, improves the current speed of service of steel band; When a certain side of steel band or double-sided adhesive bandwidth are 3.0～5.0mm, reduce or improve the current speed of service of steel band.
2. slobbering machine film production adhesive tape processing method according to claim 1 is characterized in that:
Said steel band operation reduction of speed or speedup are carried out several times; The amplitude of each adjustment is 0.1～1.5m/min; Drum operation steel band place film was peeled off situation before steel band moved and detects once more in a week after the steel band speed governing, if do not have adhesive tape, then kept current steel belt operating speed to produce; If also have adhesive tape, then continue reduction of speed or speedup; Steel band reduction of speed or speedup are no more than steel band normal running speed scope.
3. slobbering machine film production adhesive tape processing method according to claim 1 and 2 is characterized in that:
When each steel belt operating speed is adjusted, regulate plenum chamber jet expansion wind speed in hydrostomia drying tunnel temperature and/or the hydrostomia drying tunnel, so that the solvent of dry back gained film remains 28.0%～32.0%;
When steel belt operating speed reduces, reduce the hydrostomia drying tunnel temperature and/or reduce plenum chamber jet expansion wind speed in the hydrostomia drying tunnel; When steel belt operating speed improves, plenum chamber jet expansion wind speed in rising hydrostomia drying tunnel temperature and/or the increase hydrostomia drying tunnel.
4. slobbering machine film production adhesive tape processing method according to claim 1 and 2 is characterized in that:
When regulating steel belt operating speed, the lip aperture that can also adjust the hydrostomia die head is to eliminate adhesive tape; The lip aperture adjustable extent of hydrostomia die head is 30～75 μ m, when steel band one or both sides adhesive tape width greater than 5.0mm, and still have adhesive tape behind the steel band operation reduction of speed, reduce the lip aperture of current this side of hydrostomia die head or bilateral; The adhesive tape width is less than or equal to 3.0mm when the steel band one or both sides, and still has adhesive tape after the steel band operation speedup, increases the lip aperture of current this side of hydrostomia die head or bilateral; After steel band one or both sides adhesive tape width is 3.0～5.0mm, reduces the current speed of service of steel band, still have adhesive tape, reduce the lip aperture of current this side of hydrostomia die head or both sides; After steel band one or both sides adhesive tape width is 3.0～5.0mm, improves the current speed of service of steel band, still have adhesive tape, increase the lip aperture of current this side of hydrostomia die head or both sides.
5. slobbering machine film production adhesive tape processing method according to claim 3 is characterized in that:
The increase and decrease of said hydrostomia die head lip aperture is divided into repeatedly to be carried out; The amplitude of each adjustment is 5～12 μ m; Drum operation steel band place film was peeled off situation before lip aperture adjustment back steel band moved and detects once more in a week; If do not have adhesive tape, then keep current hydrostomia die head lip aperture and steel belt operating speed to produce; If also have adhesive tape, then continue to adjust hydrostomia die head lip aperture once more or regulate steel belt operating speed; The adjustment of hydrostomia die head lip aperture is no more than hydrostomia die head lip aperture adjustable extent.
6. slobbering machine film production adhesive tape processing method according to claim 4 is characterized in that:
When each hydrostomia die head lip aperture is regulated, regulating plenum chamber jet expansion wind speed in hydrostomia drying tunnel temperature and/or the hydrostomia drying tunnel, is 28.0%～32.0% with the solvent of the later half finished films that keeps dry,
When reducing die head lip aperture, reduce the hydrostomia drying tunnel temperature and/or reduce plenum chamber jet expansion wind speed in the hydrostomia drying tunnel; When increasing die head lip aperture, plenum chamber jet expansion wind speed in rising hydrostomia drying tunnel temperature and/or the increase hydrostomia drying tunnel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110286364 CN102303388B (en) | 2011-09-24 | 2011-09-24 | Method for adhesive tape treatment in production of thin film by casting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110286364 CN102303388B (en) | 2011-09-24 | 2011-09-24 | Method for adhesive tape treatment in production of thin film by casting machine |
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| CN102303388A true CN102303388A (en) | 2012-01-04 |
| CN102303388B CN102303388B (en) | 2013-06-26 |
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| CN 201110286364 Active CN102303388B (en) | 2011-09-24 | 2011-09-24 | Method for adhesive tape treatment in production of thin film by casting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116141559A (en) * | 2023-04-17 | 2023-05-23 | 山东欧亚高分子材料有限公司 | Drying method for reducing shrinkage rate of polyimide film based on casting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1569436A (en) * | 2003-04-25 | 2005-01-26 | 富士胶片株式会社 | Method of producing film from polymer solution |
| CN1868716A (en) * | 2006-04-27 | 2006-11-29 | 溧阳华晶电子材料有限公司 | Polyimide film curtain coating technology and equipment |
| CN101264650A (en) * | 2007-03-16 | 2008-09-17 | 富士胶片株式会社 | Solvent casting device and solvent casting method |
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2011
- 2011-09-24 CN CN 201110286364 patent/CN102303388B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569436A (en) * | 2003-04-25 | 2005-01-26 | 富士胶片株式会社 | Method of producing film from polymer solution |
| CN1868716A (en) * | 2006-04-27 | 2006-11-29 | 溧阳华晶电子材料有限公司 | Polyimide film curtain coating technology and equipment |
| CN101264650A (en) * | 2007-03-16 | 2008-09-17 | 富士胶片株式会社 | Solvent casting device and solvent casting method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116141559A (en) * | 2023-04-17 | 2023-05-23 | 山东欧亚高分子材料有限公司 | Drying method for reducing shrinkage rate of polyimide film based on casting machine |
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