CN102274814B - Coating bubble-free coating method and device - Google Patents
Coating bubble-free coating method and device Download PDFInfo
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- CN102274814B CN102274814B CN 201110198302 CN201110198302A CN102274814B CN 102274814 B CN102274814 B CN 102274814B CN 201110198302 CN201110198302 CN 201110198302 CN 201110198302 A CN201110198302 A CN 201110198302A CN 102274814 B CN102274814 B CN 102274814B
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Abstract
The invention relates to coating equipment used in holographic anti-counterfeiting printing industry, in particular to a coating bubble-free coating method and a coating bubble-free coating device. The invention aims to provide the coating bubble-free coating method and the coating bubble-free coating device, which can realize bubble-free coating and improve product quality. In the invention, a transfer barrel is arranged in front of a material tank, coating material liquid is pumped into the transfer barrel from a material barrel by an air pump, air bubbles generated in the coating material solution are suspended above the liquid level in the barrel, the transfer barrel stores material solution and keeps the material solution at a certain height, the transfer barrel is communicated with the bottom of the material tank through a feeding pipe with a feeding valve, an overflowing pipe with an overflowing valve is arranged between the transfer barrel and the material barrel, and based on an objective law that light air bubbles in the coating naturally float up, so as to be stored on the surface of the coating solution in a floating manner; and as a result, the cost, equipment investment and energy consumption are reduced. The equipment has the advantages of obvious energy-saving effect, simple structure, low cost, wide application range, high efficiency, convenient installation, operation and maintenance, and high environment friendliness.
Description
Technical field
The present invention relates to a kind of holographic false proof printing industry coating apparatus, particularly a kind of method and apparatus of coating bubble-free coating.
Background technology
At present, at the holographic false proof printing technology, existing coating machine is when large-scale production, that the coating feed liquid that will stir is pumped in the rectangle trough of coating machine with air pump in the coating storage vat, in the part situation, can in trough of coating machine, produce bubble in the feed liquid surface, and be difficult to eliminate, such circulation makes coating produce a large amount of bubbles easily, in coating process, these bubbles can not be eliminated voluntarily, coating in the trough of coating machine is come with a large amount of bubbles and diffusion, float on above the feed liquid, the net roller that is coated with will be with bubble, because alveolate surface tension and bubble-free surface tension are different, cause the coating became uneven on the net roller strap even, it is bad that its result is coated with the inside levelability exactly, bubble in this coating is coated on the base material with anilox roll, formation is with coating bubble impression or that out-of-flatness is smooth, and defects can be serious along with the raising of coating speed, form a large amount of in the serious quality problems of goods, product quality descends, and has wasted a large amount of coating materials, also has influence on the quality of next process.For fear of the aeration Painting effect, people at first expect adopting defoamer, for a long time, people are devoted to the specializes in chemistry additive and suppress the generation of bubble or eliminate bubble, but only have up to now the foam inhibitor of only a few applicable, and its price comparison is expensive, and the raising that can bring production cost, affect the problems such as properties of product, in addition, in the situation of not introducing defoamer, be in the patent of 200710030361 non-bubble applying technique such as the patent No., employing be the method that vacuum is eliminated bubble, the input of vacuum equipment is well imagined, the cost of investment of equipment and operation consuming cost all can improve greatly, all have the problem that can't neglect; Be combined type froth breaking Despumation device just like patent 200920095730.9, patent name also, it is the waveform shape rhombus net device Froth that increases a kind of vertical placement, acquired filter screen, filter screen may not fully and completely be eliminated bubble, how really fundamentally to reduce and eliminate bubble, how add cost and just can reach and reduce and eliminate bubble not increasing or reduce, the aspect problems such as reduction energy consumption all need further to research and solve, in order to develop more rational, better energy-conservation bubble-free coating device, realize bubble-free coating.
Summary of the invention
The purpose of this invention is to provide a kind of method and apparatus of realizing the coating bubble-free coating that coating bubble-free coating improves the quality of products.
The method of coating bubble-free coating of the present invention, the concrete steps of the method are:
The first step: reinforced whipping process: stir in the coating feed liquid input storage vat with preparation;
Second step: course of conveying, the feed liquid that stirs pumped in storage vat with air pump in the turning barrel;
The 3rd step: without the bubble process: the coating feed liquid produces bubble in continuous conveying process, bubble is because of on the large lightweight coating feed liquid that floats in the middle turning barrel of volume, float on the coating feed liquid surface and form bubble layer, then do not have bubble near lower portion because of buoyancy at middle turning barrel;
The 4th step: pass on process: described middle turning barrel is communicated with by the feeding pipe with material inlet valve in the bottom with hopper, described middle turning barrel and described hopper are arranged on sustained height, described storage vat position is lower than middle turning barrel and hopper, liquid level is higher than the interior liquid level of hopper because air pump feed continuously remains in the middle turning barrel, and middle turning barrel inner bottom part coating feed liquid continues to flow in the feed chute by feeding pipe because of pressure differential;
The 5th step: coating machine is coated with in described hopper, remains in the described hopper that coating machine keeps the liquid level of normal coating, has unnecessary coating to be back in the storage vat by the return line that is communicated with storage vat, includes circulation in;
The 6th step: still system balancing flows: the overflow passage that is provided with flow spill valve between described middle turning barrel and the storage vat is communicated with, the coating feed liquid that enters described hopper equals coating and consumes feed liquid and add that the backflow feed liquid also equals to pump into reduction of feed volume and overflow passage is discharged the poor of feed liquid, adjusts that each valve is controlled each piping flow so that reach turnover circulation dynamic equilibrium during the storing paint feed liquid in each barrel and the groove constantly flows.
Realize the device of coating bubble-free coating of the present invention, comprise: coating machine and hopper, and the air pump of feed, wherein: a middle turning barrel is set before described hopper, with air pump with the coating feed liquid from the storage vat suction in the turning barrel, producing a certain amount of bubble in the coating feed liquid is suspended on barrel interior liquid level, the interior storage of middle turning barrel also keeps certain thickness feed liquid, described middle turning barrel is communicated with by the feeding pipe with material inlet valve in the bottom with hopper, return line is set on the hopper is connected with storage vat, the overflow passage that is provided with flow spill valve between described middle turning barrel and the storage vat is communicated with.
The device of coating bubble-free coating of the present invention, wherein: described middle turning barrel top is provided with top cover.
The device of coating bubble-free coating of the present invention, wherein: described each pipeline outlet position is provided with screen pack.
Bottom at described coating machine arranges trough of coating machine, in described trough of coating machine front portion turning barrel in is set, with air pump with the coating feed liquid from the dosage bunker suction in the turning barrel, the coating feed liquid is bubbled and is suspended in a barrel interior liquid level, feeding pipe in bottom of the barrel slowly flows into the coating feed liquid in the trough of coating machine, the bottom pipeline is provided with control valve, to reconcile discharging speed, the bubble that this device can make air pump produce in stirring and course of conveying does not enter in the coating pan of described coating machine, avoid it that anilox roll is coated with inhomogeneity impact, described middle turning barrel top is provided with top cover, to reduce the volatilization of coating feed liquid internal solvent, described middle turning barrel is provided with the flash mouth, in entering middle turning barrel feed liquid too much or transfer bottom of the barrel discharging opening when stopping up, feed liquid enters overflow passage and enters in the middle of the storage vat from overflow passage.
The present invention has following remarkable advantage:
The viscosity that the present invention takes full advantage of the employed coating feed liquid of coating is little, flowability is characteristics preferably, if the coating of thickness, also just can't finish the process of coating, the present invention is fit to the painting process of holographic false proof printing technology, existing bubble ratio coating floats gently and naturally in coating, therefore the bubble floating in the coating or be broken for minute bubbles and float and be stored in coating feed liquid surface, there is not bubble in coating feed liquid bottom, so that the feed liquid that enters coating chute by feeding pipe is pure in bubble coating feed liquid.
The present invention is provided with screen pack at each pipeline outlet position, increases the cleanliness factor of coating feed liquid, improves the quality of products.
Coating feed liquid of the present invention is flowable mass, is suitable for most feed liquids that existing coating process uses, and compares with the expensive foam inhibitor of existing interpolation, greatly saves cost, more environmental protection; Compare with the vacuum froth breaking, save especially the consumption of equipment investment and the energy, need not power-equipment, energy-saving effect is remarkable.The inventive method is simple and practical, and apparatus structure is simple, solves the practical problem that exists in existing the production, and cost is low, and the scope of application is wide, and efficient is high, the method and apparatus of installation, operation, coating bubble-free coating easy to maintenance.In a word, the method overall technology effect of coating bubble-free coating of the present invention is remarkable, solved that people want to solve for a long time and the problem that is not resolved, solved in other words the problem that needs large cost to solve, convenient enforcement, have substantial characteristics and significant progressive, produced obvious economic benefit.
Description of drawings:
Fig. 1: the operation principle schematic diagram that is the method and apparatus embodiment of coating bubble-free coating of the present invention;
Fig. 2: the operation principle schematic diagram that is another embodiment of method and apparatus of coating bubble-free coating of the present invention;
Wherein: 1: middle turning barrel; 2: bubble; 3: the coating feed liquid; 4: valve; 5: feeding pipe; 6: storage vat; 7: air pump; 8: overflow passage; 9: return line; 10: base material; 11: rod; 12: hopper; 13: coating machine; 14: top cover; 15: slag-drip opening.
The specific embodiment:
The invention will be described further below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
The method of coating bubble-free coating of the present invention, the method is:
The first step: reinforced whipping process stirs in the coating feed liquid 3 input storage vats with preparation;
Second step: course of conveying, the feed liquid 3 usefulness air pumps 7 that stir are pumped in storage vat 6 in the turning barrel 1;
The 3rd step: without the bubble process: coating feed liquid 3 produces bubbles 2 in continuous conveying process, bubble 2 is because of on the large lightweight coating feed liquid 3 that floats in the middle turning barrel 1 of volume, float on the upper bubble layer that forms in coating feed liquid 3 surfaces, then do not have bubble near lower portion because of the upper liquid pressure-acting at middle turning barrel 1;
The 4th step: pass on process: described middle turning barrel 1 is communicated with by the feeding pipe 5 with material inlet valve 4 in the bottom with hopper 12, described middle turning barrel 1 and described hopper 12 are arranged on sustained height, described storage vat 6 positions are lower than middle turning barrel 1 and hopper 12, middle turning barrel 1 interior liquid level remains the liquid level that is higher than in the hopper 12 because of air pump 7 feed continuously, and middle turning barrel 1 inner bottom part coating feed liquid 3 continues to flow in the feed chute 12 by feeding pipe 5 because of pressure differential;
The 5th step: coating: be coated with at described hopper 12 interior coating machines 13, remain in the described hopper 12 that coating machine 13 keeps the liquid level of normal coating, have unnecessary coating to be back in the storage vat 6 by the return line 9 that is communicated with storage vat 7, include circulation in;
The 6th step: still system balancing flows: the overflow passage 8 that is provided with flow spill valve 4 between described middle turning barrel 1 and the storage vat 6 is communicated with, the coating feed liquid 3 that enters described hopper 12 equals coating and consumes feed liquid and add that the backflow feed liquid also equals to pump into reduction of feed volume and overflow passage is discharged the poor of feed liquid, adjusts each valve 4 each piping flow of control so that the storing paint feed liquid 3 in each barrel and the groove reaches turnover circulation dynamic equilibrium in constantly flowing.This method is compared generation with the expensive foam inhibitor of existing interpolation maximum efficiency is exactly greatly to save cost, more environmental protection; This method is compared generation with the vacuum froth breaking maximum efficiency is exactly the consumption of saving equipment investment and the energy, need not power-equipment, and energy-saving effect is remarkable.
As shown in Figure 1, an embodiment of the device of coating bubble-free coating of the present invention, in Fig. 1, method according to coating bubble-free coating, a middle turning barrel 1 is set before the hopper 12 below the coating machine 13, with air pump 7 with coating feed liquid 3 from storage vat 6 suction in the turning barrel 1, producing a certain amount of bubble 2 in the coating feed liquid 3 is suspended on barrel interior liquid level, described middle turning barrel 1 interior storage and the feed liquid 3 of keeping certain height, described middle turning barrel 1 is communicated with by the feeding pipe 5 with material inlet valve in the bottom with hopper 12, return line 9 is set on the described hopper 12 to be connected with described storage vat 6, the overflow passage 8 that is provided with flow spill valve 4 between described middle turning barrel 1 and the described storage vat 6 is communicated with, owing to adopt air pump 7 coating feed liquid 3 from the process of storage vat 6 interior continuous conveying coating feed liquids 3 to produce bubble 2, and float on the upper bubble layers that form in coating feed liquid 3 surface, bubble 2 constantly increases and assembles, bubble 2 is also in the disappearance of constantly breaking simultaneously, can reach a balance, simultaneously, bubble 2 in the middle part of the feed liquid can float until bubble layer in the feed liquid in flowability preferably automatically owing to volume is lightweight greatly, and middle turning barrel 1 is the staving with certain depth, store the feed liquid of certain depth, near middle turning barrel 1 lower portion have enough feed liquid gravity pressures and so that bubble can't exist at bottom section, there is not bubble 2 in bubble 2 being arranged in transfer bucket 1 lower area namely then not having bubble 2 near turning barrel 1 lower portion because of the upper liquid pressure-acting; Described middle turning barrel 1 is communicated with by the feeding pipe 5 with material inlet valve 4 in the bottom with hopper 12, described middle turning barrel 1 and described hopper 12 are arranged on sustained height again, liquid in described middle turning barrel 1 and the described hopper 12 is UNICOM, the pressure of both sides liquid equates, when described middle turning barrel 1 interior liquid level remains a little more than the liquid level in the hopper 12 because of air pump 7 feed continuously, the pressure of described middle turning barrel 1 bottom at this moment will be greater than the pressure of hopper 12 1 sides, the liquid of described middle turning barrel 1 bottom will be to described hopper 12 interior flowing, remain in the described hopper 12 that in addition coating machine 13 keeps the liquid level of normal coating, carry the discharge relation of feed liquid by valve 4 and the air pump 7 adjusted on each pipeline, so that this reduction of feed volume that flows is slightly larger than the reduction of feed volume that coating consumes, slightly a small part feed liquid is back in the storage vat 6 from return line 9, consist of the circulatory system that keeps certain flow, described storage vat 6 positions are lower than middle turning barrel 1 and hopper 12 in addition, the overflow passage 8 that is provided with flow spill valve 4 between described middle turning barrel 1 and the storage vat 6 is communicated with, when the amount that pumps into when air pump 7 is excessive, can regulate by the flow spill valve 4 on the adjustment overflow passage 8 flow of overflow, so that middle turning barrel 1 interior unnecessary flow overflows in the storage vat 6 smoothly, the coating feed liquid 3 that namely enters described hopper 12 equals coating and consumes feed liquid and add that the backflow feed liquid also equals to pump into reduction of feed volume and overflow passage is discharged the poor of feed liquid, adjusts each valve 4 each piping flow of control so that the storing paint feed liquid 3 in each barrel and the groove reaches turnover circulation dynamic equilibrium in constantly flowing.
The inventive method is simple and practical, and apparatus structure is simple, solves the practical problem that exists in existing the production, and cost is low, and the scope of application is wide, and efficient is high, the method and apparatus of installation, operation, coating bubble-free coating easy to maintenance.
Fig. 2 is second embodiment of the present invention, is the middle turning barrel that adopts funnel type, and each valve 4 is controlled each piping flow so that reach turnover circulation dynamic equilibrium during the storing paint feed liquid 3 in each barrel and the groove constantly flows by adjusting.In Fig. 2, hopper 12 is arranged below the coating machine 13, turning barrel 1 in one funnel type is set in the front portion of described hopper 12, with air pump 7 with coating feed liquid 3 from storage vat 6 in the suction in the turning barrel 1, be that described air pump 7 is to described middle turning barrel 1 feed, the bubble 2 that the coating feed liquid is floated is suspended on the liquid level of coating feed liquid 3 in the middle turning barrel, described middle turning barrel 1 funnel bottom part arranges feeding pipe 5 and is connected in the described hopper 12, namely there is not the coating feed liquid 3 of bubble 2 slowly to flow in the hopper 12 by feeding pipe 5 in the transfer bottom of the barrel, when the present invention takes full advantage of bubble 2 and exists in the coating feed liquid, because bubble 2 is than the large lightweight and objective law that naturally floats of coating feed liquid 3 volumes, make bubble 2 unsteady coating feed liquid 3 surfaces that are stored in the coating feed liquid, utilization has the middle turning barrel 1 of certain depth funnel type, because it has certain liquid depth, the pressure that bottom coating feed liquid is subject to top coating feed liquid is larger, it is subject to the pressure of top feed liquid, this lower portion pressure is larger, bubble 2 in the middle turning barrel 1 bottom coating feed liquid 3 is squeezed and is broken for minute bubbles and come-up, therefore there is not bubble 2 in coating feed liquid 3 bottoms near bottom position, so that the coating in the middle turning barrel 1 is the pure coating feed liquid 3 without bubble 2.Coating feed liquid 3 of the present invention is flowable mass, therefore the depth requirements that limits turning barrel 1 in the funnel type is the degree of depth that satisfies certain pressure, sidewall 15 gradients and feeding pipe 5 also all have certain angle of inclination, reach the flowability that namely will guarantee coating feed liquid 3, ensure again and do not produce larger mutual collision and impact between the coating feed liquid 3, coating feed liquid 3 is slowly to flow slowly, reduce the generation of bubble 2, at described feeding pipe 5 control valve 4 is set, to regulate the flowing velocity in the pipeline, described middle turning barrel 1 top is provided with top cover 14, to reduce the volatilization of coating feed liquid internal solvent, the present invention is provided with screen pack (not drawing among the figure) at each pipeline outlet position, to increase the cleanliness factor of coating feed liquid, improves the quality of products.Described middle turning barrel 1 bottom is provided with the slag-drip opening 15 of valve 4, the top of turning barrel 1 is provided with overflow passage 8 in the described funnel type, when entering middle turning barrel 1 interior coating feed liquid 3 too much or middle turning barrel 1 bottom feed pipelines 5 obstruction, coating feed liquid 3 flows in the storage vats 6 from overflow passage 8.The device of coating bubble-free coating of the present invention can eliminate air pump 7 stir and course of conveying in the foaming that produces enter in the hopper 12 of described coating machine 13, avoid it that anilox roll is coated with inhomogeneity impact, even deposit is arranged, also can enter the regularly artificial discharge of slag-drip opening 15 of turning barrel 1 bottom in the funnel type.
Claims (4)
1. the method for coating bubble-free coating, it is characterized in that: the method is:
The first step: reinforced whipping process, stir in coating feed liquid (3) the input storage vat with preparation, described coating feed liquid (3) is the coating composition for the holographic false proof printing, is that viscosity is little, the feed liquid of good fluidity;
Second step: course of conveying, the feed liquid (3) that stirs pumped in storage vat (6) with air pump (7) in the turning barrel (1);
The 3rd step: without the bubble process: coating feed liquid (3) produces bubble (2) in continuous conveying process, bubble (2) is because of on the large lightweight coating feed liquid (3) that floats in the middle turning barrel (1) of volume, float on and form bubble layer on coating feed liquid (3) surface, then there be not bubble near lower portion because of the upper liquid pressure-acting at middle turning barrel (1);
The 4th step: pass on process: described middle turning barrel (1) is communicated with by the feeding pipe (5) with material inlet valve (4) in the bottom with hopper (12), described middle turning barrel (1) and described hopper (12) are arranged on sustained height, described storage vat (6) position is lower than middle turning barrel (1) and hopper (12), the interior liquid level of middle turning barrel (1) remains the liquid level that is higher than in the hopper (12) because of air pump (7) feed continuously, middle turning barrel (1) inner bottom part coating feed liquid (3) is passed through feeding pipe (5) because of pressure differential and is constantly slowly flowed in the hopper (12), and the overflow from overflow passage (8) of unnecessary coating feed liquid enters to consist of circulation one in the storage vat (6) in the middle turning barrel (1);
The 5th step: coating machine (13) is coated with in described hopper (12), remain in the described hopper (12) that coating machine (13) keeps the liquid level of normal coating, there is unnecessary coating to be back in the storage vat (6) by the return line (9) that is communicated with storage vat (6), includes circulation two in;
The 6th step: still system balancing flows: the overflow passage (8) that is provided with flow spill valve (4) between described middle turning barrel (1) and the storage vat (6) is communicated with, the coating feed liquid (3) that enters described hopper (12) equals coating and consumes feed liquid and add that the backflow feed liquid also equals to pump into reduction of feed volume and overflow passage is discharged the poor of feed liquid, adjusts that each valve (4) is controlled each piping flow so that reach turnover circulation dynamic equilibrium during the storing paint feed liquid (3) in each barrel and the groove constantly flows.
2. realize the device of the described coating bubble-free coating method of claim 1, comprise: coating machine (13) and hopper (12), the air pump (7) of storage vat (6) and feed, it is characterized in that: at the front middle turning barrel (1) that arranges of described hopper (12), with air pump (7) with coating feed liquid (3) from storage vat (6) suction in the turning barrel (1), producing a certain amount of bubble (2) in the coating feed liquid (3) is suspended on barrel interior liquid level, the feed liquid (3) that stores and keep certain height in the middle turning barrel (1), described middle turning barrel (1) is communicated with by the feeding pipe (5) with material inlet valve (4) in the bottom with hopper (12), return line (9) is set on the hopper (12) is connected with storage vat (6), the overflow passage (8) that is provided with flow spill valve (4) between described middle turning barrel (1) and the storage vat (6) is communicated with.
3. device according to claim 2, it is characterized in that: described middle turning barrel (1) top is provided with top cover (14).
4. device according to claim 2 is characterized in that: described each pipeline outlet position is provided with screen pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110198302 CN102274814B (en) | 2011-07-12 | 2011-07-12 | Coating bubble-free coating method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110198302 CN102274814B (en) | 2011-07-12 | 2011-07-12 | Coating bubble-free coating method and device |
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| Publication Number | Publication Date |
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| CN102274814A CN102274814A (en) | 2011-12-14 |
| CN102274814B true CN102274814B (en) | 2013-01-23 |
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| CN 201110198302 Expired - Fee Related CN102274814B (en) | 2011-07-12 | 2011-07-12 | Coating bubble-free coating method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103143481A (en) * | 2013-03-21 | 2013-06-12 | 无锡中易薄膜科技有限公司 | Novel safe and environment-friendly coating equipment |
| CN105396749B (en) * | 2015-12-28 | 2019-04-30 | 福建钢泓金属科技股份有限公司 | A kind of roller coating coating equipment and coating process |
| CN108311347B (en) * | 2018-01-31 | 2024-04-09 | 江东科技有限公司 | Feeding device and using method thereof |
| CN114263070A (en) * | 2021-12-01 | 2022-04-01 | 浙江五星纸业有限公司 | Method for preparing plastic-free food paperboard |
| CN115418877A (en) * | 2022-11-02 | 2022-12-02 | 东莞建晖纸业有限公司 | Zero discharge system of surface coating waste water |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509199A (en) * | 2001-12-28 | 2004-06-30 | 株式会社小金井 | Chemical Supply device and method thereof |
| CN2850719Y (en) * | 2005-11-10 | 2006-12-27 | 江苏亨通光纤科技有限公司 | Automatic coating feeding device for optical fiber drawing tower |
| CN201339817Y (en) * | 2009-02-05 | 2009-11-04 | 和舰科技(苏州)有限公司 | Liquid detecting system in pipeline |
| CN202191998U (en) * | 2011-07-12 | 2012-04-18 | 湖北联合天诚防伪技术有限公司 | Bubble-free coating device for coating material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09164353A (en) * | 1995-12-18 | 1997-06-24 | Nkk Corp | Roll coater coating device |
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2011
- 2011-07-12 CN CN 201110198302 patent/CN102274814B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509199A (en) * | 2001-12-28 | 2004-06-30 | 株式会社小金井 | Chemical Supply device and method thereof |
| CN2850719Y (en) * | 2005-11-10 | 2006-12-27 | 江苏亨通光纤科技有限公司 | Automatic coating feeding device for optical fiber drawing tower |
| CN201339817Y (en) * | 2009-02-05 | 2009-11-04 | 和舰科技(苏州)有限公司 | Liquid detecting system in pipeline |
| CN202191998U (en) * | 2011-07-12 | 2012-04-18 | 湖北联合天诚防伪技术有限公司 | Bubble-free coating device for coating material |
Non-Patent Citations (1)
| Title |
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| JP特开平9-164353A 1997.06.24 |
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