CN102824986B - A kind ofly improve the method that film is coated with stability online - Google Patents
A kind ofly improve the method that film is coated with stability online Download PDFInfo
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- CN102824986B CN102824986B CN201210221621.3A CN201210221621A CN102824986B CN 102824986 B CN102824986 B CN 102824986B CN 201210221621 A CN201210221621 A CN 201210221621A CN 102824986 B CN102824986 B CN 102824986B
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- gravure roll
- spray equipment
- nozzle
- sap cavity
- roll
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Abstract
A kind ofly improve the method that film is coated with stability online, the side that it returns for sap cavity in gravure roll arranges spray equipment, spray equipment is made up of feed pipe and nozzle, wherein, the surface spacing of nozzle and gravure roll is 2 ~ 3cm, meet 1/2H≤h≤4/5H between the height h of nozzle and the height H of gravure roll, and operate as follows: liquid, when gravure roll returns for sap cavity, is sprayed the surface of gravure roll by a. by spray equipment; B. along with the rotation of gravure roll, gravure roll is kept to return for roll surface groove during sap cavity moistening; C. gravure roll takes quantitative coating fluid out of from for sap cavity again.The present invention can effectively to reduce or avoid in the groove of gravure roll, because solvent volatilize the solid constituent precipitation caused, to stabilize the band liquid measure of applicator roll and the coating quality of product, extend coating duration, improve film and be coated with stability online.
Description
Technical field
The present invention relates to a kind of film coating techniques, particularly a kind ofly improve the method that film is coated with stability online.
Background technology
Membrane material is in order to meet specific performance and requirement, the coating of special formulation need be applied on the surface of the film, kind of a mode is had to be adopt gravure roll to be coated with, its roll surface is carved with the groove of definite shape and the degree of depth, when gravure roll is rotated through for sap cavity, roll surface groove is full of quantitative coating fluid, and film contacts with gravure roller surface, the coating fluid in gravure roll groove is evenly coated to the top layer that film surface forms specific function.
After coating liquid to film surface, gravure roll inside grooves remains coating fluid and contacts with air, solution is after volatilization, fraction solids in coating fluid becomes to analyze, remain in inside grooves, thus gravure roll again enter for sap cavity time, institute be be coated with liquid measure can reduce, the coating liquid measure being coated to membrane material surface reduces thereupon, and coating stability reduces.In order to eliminate this impact, needing to shut down cleaning gravure roll, causing production cost increase, production efficiency decline.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of and improves the method that film is coated with stability online, and the method can effectively reduce or avoid in gravure roll groove because solvent volatilize the solid constituent precipitation caused.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind ofly improve the method that film is coated with stability online, the side that it returns for sap cavity in gravure roll arranges spray equipment, spray equipment is made up of feed pipe and nozzle, wherein, the surface spacing of nozzle and gravure roll is 2 ~ 3cm, meet 1/2H≤h≤4/5H between the height h of nozzle and the height H of gravure roll, and operate as follows:
A., when gravure roll returns for sap cavity, by spray equipment, liquid is sprayed the surface of gravure roll;
B. along with the rotation of gravure roll, gravure roll is kept to return for roll surface groove during sap cavity moistening;
C. gravure roll takes quantitative coating fluid out of from for sap cavity again.
Above-mentioned raising film is coated with the method for stability online, meets 3/5H≤h≤2/3H between the height h of described nozzle and the height H of gravure roll.
Above-mentioned raising film is coated with the method for stability online, and the average spray amount of described sprayer unit is 20-100 liter/min.
Above-mentioned raising film is coated with the method for stability online, and described liquid is coating fluid or solvent.
Above-mentioned raising film is coated with the method for stability online, and described spray is continuous or discontinuous manner.
Compared with prior art, tool of the present invention has the following advantages:
The present invention is arranged spray equipment by the relevant position returned in gravure roll for the side of sap cavity and is controlled the installation site of spray equipment, efficiently solve the solid constituent caused due to coating solution volatilization in applicator roll groove and separate out problem, stabilize the band liquid measure of applicator roll, stabilize the coating quality of product, extend coating duration, improve film and be coated with stability online.Meanwhile, use the method, effectively can improve coating efficiency, save production cost.
Accompanying drawing explanation
Fig. 1 is online coating preparation process schematic diagram of the present invention;
Fig. 2 is spray equipment front view of the present invention.
In figure, each label is expressed as: 1-is for sap cavity; 2-film; 3-gravure roll; 4-spray equipment; 5-feed pipe; 6-nozzle; The 7-film direction of motion; 8-coating fluid.
Detailed description of the invention
Spray equipment 4 is set by liquid spray to the surface of gravure roll in gravure roll 3 side returned for sap cavity 1, makes in the groove of gravure roller surface, to keep moistening, reduce or avoid the solid constituent caused due to the solvent volatilization in coating fluid in groove to separate out.
Spray equipment 4 is made up of feed pipe 5 and nozzle 6, the length of spray equipment 4 and the length of gravure roll same or slightly shorter, the shower nozzle distance gravure roll 2-3 centimeters of spray equipment, this is because the liquid in spray equipment needs to be dropped in gravure roll slowly, prevents the surface being splashed to film.
Meet 1/2H≤h≤4/5H between the nozzle height h of spray equipment and gravure roll height H, namely maintain a certain distance with film, preferred 3/5H≤h≤2/3H more than gravure roll center line.Nozzle height h can utilize the Action of Gravity Field of liquid higher than gravure roll center line, can be relatively easy to the groove being full of gravure roll; If nozzle height h is too high, then too short with the distance of film, easily coating fluid is spilt to splash on film and cause the apparent disadvantage of film.
The spray flux of spray equipment adjusts according to the speed of coating, but simultaneously principle does not allow the overflow of liquid runs down gravure roll can meet in groove again the needs not having solid precipitate.General spray flux controls at 20-100 liter/min.
The ejecting liquid that spray equipment uses for coating fluid itself or according to the solvent of coating fluid use the mixed solvent that is deployed into, preferably use coating fluid itself, directly can use the coating fluid in reservoir, reduce equipment investment, and be conducive to the stability of coated product.If use mixed solvent, need the evaporation rate allotment mixed solvent strictly control consumption according to solvent, in order to avoid due to unreasonable viscosity and the formula composition affecting coating fluid of addition of mixed solvent, thus affect the stability of coating fluid.Mixed solvent is used also to need to increase solvent memory device.
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
Spray equipment 4 is arranged on gravure roll 3 and returns to the side supplying sap cavity 1, spray equipment is made up of feed pipe 5 and nozzle 6, and the surface spacing of nozzle and gravure roll is 2cm, and the height h of nozzle 6 is 3/5H.During work, when gravure roll returns for sap cavity, coating fluid is sprayed at the surface of gravure roll by spray equipment via feed pipe 5 and nozzle 6 continuous print, along with the rotation of gravure roll, keeps gravure roll to return for roll surface groove during sap cavity moistening; Gravure roll takes quantitative coating fluid out of from for sap cavity again, and the average spray amount of sprayer unit is 90 liters/min.
Embodiment 2
Spray equipment 4 is arranged on gravure roll 3 and returns to the side supplying sap cavity 1, spray equipment is made up of feed pipe 5 and nozzle 6, and the surface spacing of nozzle and gravure roll is 3cm, and the height h of nozzle 6 is 2/3H.During work, when gravure roll returns for sap cavity, solvent is sprayed at the surface of gravure roll by spray equipment discontinuously via feed pipe 5 and nozzle 6, along with the rotation of gravure roll, keeps gravure roll to return for roll surface groove during sap cavity moistening; Gravure roll takes quantitative coating fluid out of from for sap cavity again, and the average spray amount of sprayer unit is 20 liters/min.
Embodiment 3
Spray equipment 4 is arranged on gravure roll 3 and returns to the side supplying sap cavity 1, spray equipment is made up of feed pipe 5 and nozzle 6, and the surface spacing of nozzle and gravure roll is 3cm, the height h of nozzle 6 is 1/2H.During work, when gravure roll returns for sap cavity, coating fluid is sprayed at the surface of gravure roll by spray equipment discontinuously via feed pipe 5 and nozzle 6, along with the rotation of gravure roll, keeps gravure roll to return for roll surface groove during sap cavity moistening; Gravure roll takes quantitative coating fluid out of from for sap cavity again, and the average spray amount of sprayer unit is 50 liters/min.
Embodiment 4
Spray equipment 4 is arranged on gravure roll 3 and returns to the side supplying sap cavity 1, spray equipment is made up of feed pipe 5 and nozzle 6, and the surface spacing of nozzle and gravure roll is 2.5cm, and the height h of nozzle 6 is 7/10H.During work, when gravure roll returns for sap cavity, solvent is sprayed at the surface of gravure roll by spray equipment continuously via feed pipe 5 and nozzle 6, along with the rotation of gravure roll, keeps gravure roll to return for roll surface groove during sap cavity moistening; Gravure roll takes quantitative coating fluid out of from for sap cavity again, and the average spray amount of sprayer unit is 100 liters/min.
Embodiment 5
Spray equipment 4 is arranged on gravure roll 3 and returns to the side supplying sap cavity 1, spray equipment is made up of feed pipe 5 and nozzle 6, and the surface spacing of nozzle and gravure roll is 2cm, and the height h of nozzle 6 is 4/5H.During work, when gravure roll returns for sap cavity, coating fluid is sprayed at the surface of gravure roll by spray equipment continuously via feed pipe 5 and nozzle 6, along with the rotation of gravure roll, keeps gravure roll to return for roll surface groove during sap cavity moistening; Gravure roll takes quantitative coating fluid out of from for sap cavity again, and the average spray amount of sprayer unit is 50 liters/min.
Comparative example
With embodiment 1, do not use spray equipment.
| Embodiment | Apparent | Point quantum count | The continuous seepage cycle |
| Embodiment 1 | Well | ≤ 15/square meter | 9 days |
| Embodiment 2 | Well | ≤ 20/square meter | 6 days |
| Embodiment 3 | Well | ≤ 10/square meter | 15 days |
| Embodiment 4 | Well | ≤ 8/square meter | 10 days |
| Embodiment 5 | Well | ≤ 5/square meter | 20 days |
| Comparative example | Generally | ≤ 32/square meter | 3 days |
Detection method:
1. apparent: to estimate under high light;
2. a quantum count: line is estimated;
3. the continuous seepage cycle: actual measurement.
Claims (4)
1. one kind is improved the method that film is coated with stability online, it is characterized in that, the side returned for sap cavity (1) in gravure roll (3) arranges spray equipment (4), described spray equipment (4) is made up of feed pipe (5) and nozzle (6), wherein, nozzle (6) is 2 ~ 3cm with the surface spacing of gravure roll (3), meets 1/2H≤h≤4/5H between the height h of nozzle (6) and the height H of gravure roll (3);
The ejecting liquid that spray equipment uses is coating fluid itself;
Operation is carried out as follows:
A., when gravure roll returns for sap cavity, by spray equipment, liquid is sprayed the surface of gravure roll;
B. along with the rotation of gravure roll, gravure roll is kept to return for roll surface groove during sap cavity moistening;
C. gravure roll takes quantitative coating fluid out of from for sap cavity again;
The average spray amount of described spray equipment (4) is 20-100 liter/min.
2. raising film according to claim 1 is coated with the method for stability online, it is characterized in that, meets 3/5H≤h≤2/3H between the height h of described nozzle (6) and the height H of gravure roll (3).
3. raising film according to claim 2 is coated with the method for stability online, it is characterized in that, the ejecting liquid that spray equipment uses is solvent.
4. raising film according to claim 3 is coated with the method for stability online, it is characterized in that, described spray is continuous or discontinuous manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221621.3A CN102824986B (en) | 2012-06-30 | 2012-06-30 | A kind ofly improve the method that film is coated with stability online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221621.3A CN102824986B (en) | 2012-06-30 | 2012-06-30 | A kind ofly improve the method that film is coated with stability online |
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| Publication Number | Publication Date |
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| CN102824986A CN102824986A (en) | 2012-12-19 |
| CN102824986B true CN102824986B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210221621.3A Active CN102824986B (en) | 2012-06-30 | 2012-06-30 | A kind ofly improve the method that film is coated with stability online |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104307707A (en) * | 2014-09-19 | 2015-01-28 | 合肥乐凯科技产业有限公司 | Method to improve apparent mass of film coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2493305Y (en) * | 2001-08-23 | 2002-05-29 | 中国乐凯胶片集团公司 | Improved measuring bar |
| CN101862722A (en) * | 2010-07-05 | 2010-10-20 | 中国乐凯胶片集团公司 | Pre-metering roll type coating device |
| CN102166554A (en) * | 2011-04-20 | 2011-08-31 | 保定乐凯新材料股份有限公司 | Coating device for reversal anilox rolls |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268521A (en) * | 2006-03-08 | 2007-10-18 | Sumitomo Chemical Co Ltd | Pretreatment unit for coating film forming apparatus, pretreatment method for coating film forming apparatus, coating film forming apparatus and coating film forming method |
| JP2011056352A (en) * | 2009-09-08 | 2011-03-24 | Toppan Printing Co Ltd | Coating method and coating apparatus |
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2012
- 2012-06-30 CN CN201210221621.3A patent/CN102824986B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2493305Y (en) * | 2001-08-23 | 2002-05-29 | 中国乐凯胶片集团公司 | Improved measuring bar |
| CN101862722A (en) * | 2010-07-05 | 2010-10-20 | 中国乐凯胶片集团公司 | Pre-metering roll type coating device |
| CN102166554A (en) * | 2011-04-20 | 2011-08-31 | 保定乐凯新材料股份有限公司 | Coating device for reversal anilox rolls |
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| CN102824986A (en) | 2012-12-19 |
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