CN205270029U - Slit coating machine and gasket thereof - Google Patents
Slit coating machine and gasket thereof Download PDFInfo
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- CN205270029U CN205270029U CN201520843922.9U CN201520843922U CN205270029U CN 205270029 U CN205270029 U CN 205270029U CN 201520843922 U CN201520843922 U CN 201520843922U CN 205270029 U CN205270029 U CN 205270029U
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Abstract
The utility model belongs to narrow joint type coating field especially relates to a slit coating machine and gasket thereof, slit coating machine gasket is character cut in bas -relief shape, slit coating machine gasket includes at the bottom of tongue and the gasket, the tongue is the jut on slit coating machine gasket both sides, at the bottom of the gasket be the smooth part in slit coating machine gasket bottom, the opposite side of tongue is the tongue inboard, the tongue top with perpendicular distance at the bottom of the gasket is the gasket degree of depth, process the inboard distance of tongue will be greater than the gasket degree of depth, through the distance of the fluid flow in the improvement increase gasket through the gasket both sides for the both sides of the product produced are in full accord with the thickness in the middle of the product, have overcome the thick drawback in thin both sides in the middle of the product that the gasket obtained before improving, and the product that obtains directly can use, and does not need to cut away both sides again, has practiced thrift cost and process.
Description
Technical field
This utility model belongs to slit coating applications, particularly relates to a kind of slit coater and pad thereof.
Background technology
Slit coating is a kind of high-accuracy coating method, is not only applicable to the coating of the rolled substrate material continuously such as electronic packaging, blooming, battery pole plates, is also applied to discontinuous base material such as LCD glass substrate light blockage coating etc.
Its operating principle is that by corresponding liquid feed device, fluid is squeezed into a mould that can be uniformly launched by fluid, and fluid is coated on base material after flowing out from mould outlet. This mould is generally made up of upstream mould, downstream mold and pad, and this three part determines homogeneity when liquid flows out and width, and the thickness of pad and width all can affect the quality of coating quality.
Fig. 1 illustrates the structure of slot coated head, and wherein 1 is the upstream mould of slot coated head, and 2 is the downstream mold of slot coated head, 3 is the pad of slot coated head, and 4 is the groove part of slot coated head downstream mold, and 5 is the charging aperture being coated with the leftover of bolt of cloth, 6 is cylinder, and 7 is the back flow roll being coated with the leftover of bolt of cloth.
The principle of slot coating technique refers to and utilizes corresponding liquid feed device that from charging aperture 5, masking liquid is squeezed into the painting leftover of bolt of cloth, and masking liquid is extrusion coated to base material again after flowing out from groove. Coating thickness is controlled with coating speed by fluid flow, its relationship is as follows: wet-film thickness=fluid flow/(coating width * coating speed), the uniformity of coating thickness depends on the stability of coating fluid pearl, and fluid flow, coating speed, coating fluid pearl stability are all relevant with the pad 3 in mould, the thickness of pad determines the thickness that fluid flows out, the thickness of pad and width all can affect the quality of coating quality, it is seen that pad is for the importance of slot coated.
Fluid is applied to base material after flowing out from mould, in order to ensure that coating layer thickness is homogeneous, it is necessary to assure slit mouth Y-direction and the coating fluid pearl of Z-direction every bit are the same shapes, and fluid itself has two big physical property, i.e. rheological behavior and surface tension, this two big physical property is to being coated with significant impact. Generally believing that slot coated is not suitable for coating low-viscosity masking liquid, its reason is that thinlyfluid rheological characteristic is big, and big in Z-direction liquid pearl difference after extruding from slit, after being applied to base material, coating thickness variation is big.
Major part is coated with the leftover of bolt of cloth and all adopts right angle pad on the market at present, rheological characteristic due to thinlyfluid, liquid is made to have edge effect, after fluid flows out along gasket edge, more fluid can be assembled in marginal portion, then edge flow can be more than mid portion, so may result in coated product and have defect thick on both sides, fabric width direction, intermediate thin. Major part is coated with manufacturer have to cut the edge of coated product, only leaves and takes the homogeneous product of interior thickness as finished product, so both causes waste, also make added cost.
Fig. 2 be improve before the schematic diagram of slit coater pad cross sectional shape. as shown in the figure, the tongue 31 of pad 3 is rectangular protrusions, at the bottom of tongue 31 and pad, the junction of 32 is right angle, major part is coated with the leftover of bolt of cloth and all adopts the pad 3 such as Fig. 2 shape on the market at present, the degree of depth of pad is M, it is all M that fluid flows through the distance inside tongue 31 equal with the distance flowed through in the middle part of pad, rheological characteristic yet with thinlyfluid, liquid is made to have edge effect, fluid is after the inner side outflow of pad tongue 31, more fluid can be assembled in tongue 31 inboard portion, then inside tongue 31, flow can be more than mid portion, thus cause that fluid coating is to base material rear edge portion proportion by subtraction thick middle, thus causing that coated product has both sides, fabric width direction thick, the defect of intermediate thin. the method that most of coating manufacturer processes this problem is cut the edge of coated product, only leaves and takes the identical product of interior thickness as finished product, so both causes waste, also make added cost.
For the beneficial effect clearly improvement of pad obtained, we use the slit coater equipped with Fig. 2 shape pad to be coated, its pad degree of depth M=65.3mm, pad coating fabric width, namely the distance between two tongues 31 is 510mm, taking coated product fabric width direction and test thickness every 1cm from side to opposite side, the dry thickness of required coating is 5um. After test, result is:
| 7 | 7 | 7 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 7 | 7 |
| 7 |
Visible coating thickness within the scope of each 3cm in product both sides is all thick than the coating thickness of mid portion, undesirable, can only cut out.
Summary of the invention
The purpose of this utility model is in that to provide a kind of novel slit coater and pad thereof, it is intended to solve the problem that in coating process, product edge is different with middle uniformity.
This utility model is realized in, a kind of slit coater pad, described slit coater pad be shaped as concave shape, described slit coater pad includes at the bottom of tongue and pad, described tongue refers to the jut on described slit coater pad both sides, refers to the part of described slit coater pad bottom flat at the bottom of described pad; The opposite side of described tongue is inside tongue, and described tongue top is the pad degree of depth with the vertical dimension at the bottom of described pad, and the distance inside described tongue is greater than the pad degree of depth. The tongue part of pad refers to the part that pad two ends are prominent, refers to the lowest part of pad tongue, namely the plane between the projection of pad two ends at the bottom of pad. Fluid-coating is entered pad by lower mold, flows from the bottom of pad to direction, tongue top, and when liquid flows through the pad after improvement, the required distance that flows inside tongue is greater than the distance of mid portion.
Further technical scheme of the present utility model is: described tongue is circular arc with the intersection at the bottom of described pad, described circular arc is equal with the distance that described tongue measures at the bottom of described pad, circular arc is identical with circular arc in the part at the bottom of pad in the part of tongue, that is circular arc is equal in the distance taken at the bottom of tongue and pad, the structure of circular arc increases the distance walked when liquid flows through inside pad, objectively makes the product obtained be easier to have homogeneity.
Further technical scheme of the present utility model is: at the bottom of described tongue and described slit coater pad, the curvature of the circular arc of intersection need to more than the inverse of the described pad degree of depth. Tongue top refers to the peak of pad, also it is the coating flowing through pad and the height needing applied material to contact, only when the curvature of the circular arc of intersection at the bottom of described tongue and described slit coater pad is more than or equal to the described pad degree of depth reciprocal, the thickness of the product both sides obtained just with product in the middle part of thickness there is higher homogeneity.
Further technical scheme of the present utility model is: the top of the inner side of described tongue is chamfering shape. The structure of chamfering shape increases the distance walked when liquid flows through inside pad, objectively makes the product obtained be easier to have homogeneity.
Further technical scheme of the present utility model is: the length that angled portion of falling inside described tongue is cut sth. askew is not more thanH, H are the width of described tongue. The width of tongue refers to the distance about tongue between two sides. The chamfering at tongue top cannot be excessive, and excessive chamfering also can make the product homogeneity produced not good, so the oblique section of the angular structure inside described tongue can not be excessive, oblique section length is less than or equal to tongue widthIt is preferred again.
Further technical scheme of the present utility model is: described tongue is circular arc with the intersection at the bottom of described slit coater pad, and described circular arc is equal with the distance that described tongue measures at the bottom of described pad. The top of tongue and the bottom of tongue can be improved simultaneously.
Further technical scheme of the present utility model is: at the bottom of described tongue and described slit coater pad, the curvature of the circular arc of intersection need to more than the inverse of the described pad degree of depth.
Another purpose of the present utility model is in that to provide a kind of slit coater, and described slit coater employs slit coater pad recited above.
The beneficial effects of the utility model are: add fluid in pad by improvement and flow through the distance of pad both sides, the thickness making product both sides and the product mid portion produced is completely the same, overcome the drawback improving the product intermediate thin both sides thickness that front pad obtains, the product obtained directly can be used, without cutting away both sides again, cost and operation are saved. Additionally, the slit coater pad that this utility model improves may apply to, on all existing slit coaters, have advantage applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of slot coated head.
Fig. 2 be improve before the schematic diagram of slit coater pad cross sectional shape.
Fig. 3 is the schematic diagram of slit coater pad cross sectional shape after the first improves.
Fig. 4 is the schematic diagram of slit coater pad cross sectional shape after the second improves.
Fig. 5 is the schematic diagram of slit coater pad cross sectional shape after the third improves.
Accompanying drawing labelling: 1-slot coated head upstream mould; 2-slot coated head downstream mold; 3-slot coated head gasket; 4-slot coated head downstream mold groove part; 5-is coated with leftover of bolt of cloth charging aperture; 6-cylinder; 7-is coated with leftover of bolt of cloth back flow roll.
Detailed description of the invention
Fig. 3 be this utility model provide the first improve after the schematic diagram of slit coater pad cross sectional shape. As it can be seen, pad tongue 31 in X, Y-direction with 32 intersections at the bottom of pad is measured equal distance and is processed as curved surface. Such as the fluid calculation with same traffic, after fluid squeezes into mould, the distance that flows through of 32 pars intermedias at the bottom of pad is M, and the distance walked along pad tongue 31 inner curve extrusion fluid is L, obvious L > M, the fluid that then marginal portion is assembled has flowed through farther distance, and the liquid pearl being so expressed into Z-direction during slit mouth is then more homogeneous. The degree of depth of pad is M, then processing pad two right angle become the curvature of curved surface need to more than 1/M.
We use the slit coater equipped with Fig. 3 shape pad to be coated, its pad degree of depth M=65.3mm, is processed as curve form by the intersection both sides 30mm radius of 32 at the bottom of tongue 31 and pad, i.e. shape shown in Fig. 3, curvature is 1/30, this numerical value inverse 1/65.3 more than pad degree of depth M; Pad coating fabric width, both the distance between two tongues 31 was 510mm, takes coated product fabric width direction and tests thickness every 1cm from side to opposite side, and the dry thickness of required coating is 5um. After test, result is:
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 |
Result shows to use the product that the coating of Fig. 3 shape pad obtains to overcome both sides thickness, and the defect of intermediate thin saves the material of 6cm in fabric width direction.
Fig. 4 is the schematic diagram of slit coater pad cross sectional shape after the second improves. As it can be seen, tongue 31 top of pad 3 is measured equidistance along X, Y-direction, it is processed as the chamfer shape shown in Fig. 4. Such as the fluid calculation with same traffic, after fluid squeezes into mould, the distance that flows through of 32 pars intermedias at the bottom of pad is M, and the distance walked along pad tongue 31 inner curve extrusion fluid is n, the distance n that in like manner edge fluid is walked > M, fluid edge effect then also can be avoided to cause the defect of coated product both sides thickness intermediate thin, and shape pad 3 shown in Fig. 4 can increase coating fabric width simultaneously. If the width of two tongues 31 of pad is H, then chamfered portion distance need to be less thanH��
For the beneficial effect clearly improvement of pad 3 obtained, use pad degree of depth M=65.3mm, the pad 3 of tongue 31 width H=39.5mm is tested, the tongue 31 top two right angle portions 20mm measuring pad is fabricated to the chamfering pad that oblique section is 28.3mm, i.e. shape shown in Fig. 4, the oblique section length at this tongue 31 top less than* 39.5mm. It is 550mm that pad 3 after improvement is coated with fabric width, more than 510mm before, takes coated product fabric width direction and tests thickness every 1cm from side to opposite side, and the dry thickness of required layer is 5um. After test, result is:
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 |
Result shows to use the product that the pad of Fig. 4 shape is coated obtaining to overcome both sides thickness, the coating defects of intermediate thin, and fabric width direction increases 4cm width.
Fig. 5 is the schematic diagram of slit coater pad cross sectional shape after the third improves. As schemed, tongue 31 top of pad 3 is measured equidistance along X, Y-direction, is processed as chamfer shape, meanwhile, the tongue 31 of pad 3 in X, Y-direction with 32 intersections at the bottom of pad is measured equal distance and is processed as curved surface. Such as the fluid calculation with same traffic, after fluid squeezes into mould, the distance that flows through of 32 pars intermedias at the bottom of pad is M, and the distance walked along pad tongue 31 inner curve extrusion fluid is S, the distance S that in like manner edge fluid is walked > M, fluid edge effect then also can be avoided to cause the defect of coated product both sides thickness intermediate thin, and shape pad shown in Fig. 5 can increase coating fabric width simultaneously.
For the beneficial effect clearly improvement of pad 3 obtained, use pad degree of depth M=65.3mm, the pad 3 of pad tongue width H=39.5mm is tested, measuring each 10mm processing of pad tongue 31 top X, Y-direction, to make tongue 31 top chamfer oblique section length be 14.14mm, taking 32 intersection X, each 10mm of Y-direction at the bottom of tongue 31 and pad again, to be processed into 32 intersection curvature at the bottom of tongue 31 and pad be the pad of 1/10, and pad 3 shape is as shown in Figure 5. Tongue 31 top chamfer oblique section length less than* 32 intersection curvature at the bottom of 39.5mm and tongue 31 and pad are coated with fabric width less than the pad 3 of 1/65.3, Fig. 5 shape is 530mm, takes coated product fabric width direction and tests thickness every 1cm from side to opposite side, and the dry thickness of required coating is 5um. After test, result is:
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 4 --> |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 5 | 5 | 5 |
Result shows to use the product that the slit coater of Fig. 5 shape pad obtains to overcome both sides thickness, the coating defects of intermediate thin, and fabric width direction increases 2cm width.
This utility model specific embodiment adds fluid in pad by improvement and flows through the distance of pad both sides, the thickness making product both sides and the product mid portion produced is completely the same, overcome the drawback improving the product intermediate thin both sides thickness that front pad obtains, the product obtained directly can be used, without cutting away both sides again, cost and operation are saved.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any amendment, equivalent replacement and improvement made within spirit of the present utility model and principle; such as by the arc-shaped for the chamfering deformation at tongue 31 top of pad 3 etc., should be included within protection domain of the present utility model.
Claims (8)
1. a slit coater pad, it is characterized in that: described slit coater pad be shaped as concave shape, described slit coater pad includes at the bottom of tongue and pad, described tongue refers to the jut on described slit coater pad both sides, refers to the part of described slit coater pad bottom flat at the bottom of described pad; The opposite side of described tongue is inside tongue, and described tongue top is the pad degree of depth with the vertical dimension at the bottom of described pad, and the distance inside described tongue is greater than the pad degree of depth.
2. slit coater pad according to claim 1, it is characterised in that: described tongue is circular arc with the intersection at the bottom of described pad.
3. slit coater pad according to claim 2, it is characterised in that: at the bottom of described tongue and described slit coater pad, the curvature of the circular arc of intersection is not less than the inverse of the described pad degree of depth.
4. slit coater pad according to claim 1, it is characterised in that: the top of the inner side of described tongue is chamfering shape.
5. slit coater pad according to claim 4, it is characterised in that: the length that angled portion of falling inside described tongue is cut sth. askew is not more thanH, H are the width of described tongue.
6. according to described slit coater pad arbitrary in claim 4 or 5, it is characterised in that: described tongue is circular arc with the intersection at the bottom of described slit coater pad.
7. the slit coater pad according to claim 6, it is characterised in that: at the bottom of described tongue and described slit coater pad, the curvature of the circular arc of intersection is more than or equal to the inverse of the described pad degree of depth.
8. a slit coater, it is characterised in that described slit coater employs arbitrary described slit coater pad in claim 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520843922.9U CN205270029U (en) | 2015-10-28 | 2015-10-28 | Slit coating machine and gasket thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520843922.9U CN205270029U (en) | 2015-10-28 | 2015-10-28 | Slit coating machine and gasket thereof |
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| CN205270029U true CN205270029U (en) | 2016-06-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216171A (en) * | 2016-08-31 | 2016-12-14 | 中航锂电（洛阳）有限公司 | A kind of extrusion coating machine die head pad, extrusion die and extrusion coating machine |
| CN108745775A (en) * | 2018-05-29 | 2018-11-06 | 安徽力信能源科技有限责任公司 | A kind of extrusion coating machine die head gasket and die head |
| CN109807028A (en) * | 2019-03-28 | 2019-05-28 | 信利光电股份有限公司 | A method of improving photoresist crystallization on slot coated head |
| CN115780175A (en) * | 2022-11-16 | 2023-03-14 | 深圳市曼恩斯特科技股份有限公司 | Coating die head |
-
2015
- 2015-10-28 CN CN201520843922.9U patent/CN205270029U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216171A (en) * | 2016-08-31 | 2016-12-14 | 中航锂电（洛阳）有限公司 | A kind of extrusion coating machine die head pad, extrusion die and extrusion coating machine |
| CN108745775A (en) * | 2018-05-29 | 2018-11-06 | 安徽力信能源科技有限责任公司 | A kind of extrusion coating machine die head gasket and die head |
| CN109807028A (en) * | 2019-03-28 | 2019-05-28 | 信利光电股份有限公司 | A method of improving photoresist crystallization on slot coated head |
| CN115780175A (en) * | 2022-11-16 | 2023-03-14 | 深圳市曼恩斯特科技股份有限公司 | Coating die head |
| CN115780175B (en) * | 2022-11-16 | 2023-12-26 | 深圳市曼恩斯特科技股份有限公司 | Coating die head |
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