CN204356269U - The Polyamic Acid Film that a kind of side thickeies and salivation equipment thereof - Google Patents
The Polyamic Acid Film that a kind of side thickeies and salivation equipment thereof Download PDFInfo
- Publication number
- CN204356269U CN204356269U CN201420856276.5U CN201420856276U CN204356269U CN 204356269 U CN204356269 U CN 204356269U CN 201420856276 U CN201420856276 U CN 201420856276U CN 204356269 U CN204356269 U CN 204356269U
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- lip
- film
- polyamic acid
- aperture
- salivation
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Abstract
The utility model discloses Polyamic Acid Film and the salivation equipment of the thickening of a kind of side, belong to field of film preparation.Increase gradually with close to outer edge thickness in the scope of the wide X of two side parts of this film transverse direction, X=20 ~ 200mm, film thickness distribution is symmetrical with film longitudinal cenlerline.Lip aperture within the scope of the long Y of forming mould lip two side parts of this salivation equipment increases gradually with close to outer rim aperture, and lip aperture is symmetrical with lip longitudinal cenlerline.Lip upwarps along outer end, and lower edge is still horizontal linear; Or lip upwarps along two ends, lower curved under two ends.The enlarged in thickness of the utility model film two side parts makes it intensity to be increased, and increases in the thin film strength of origin of force of after this operation clamping device, avoids causing de-pincers or dropout, edge damage because clipping broken, pulling open, and product yield improves greatly; Salivation equipment of the present utility model is easy to realize, and only need strengthen the aperture of lip both sides.
Description
Technical field
The utility model relates to Kapton and prepares facility, is specially Polyamic Acid Film and the salivation equipment thereof of the thickening of a kind of side.
Background technology
Kapton is the macromolecular material with high strength, high tenacity, abrasion performance, the excellent properties such as high temperature resistant, corrosion-resistant, is the predominating insulation making various medium-to-high grade electrotechnical, electronic components and parts, is widely used in electrotechnical, electronic industry.The preparation technology of current Kapton is with polyamic acid resin solution for raw material, and on slobbering machine, salivation obtains the Polyamic Acid Film of self-supporting, then through adding thermal stretch, high temperature imidization, cooling and shaping process obtain Kapton.
The design requirements of and high reliability light, thin, short, little along with downstream application product, the film thickness specification of the market requirement is tending towards slimming, to its technology of preparing, quality product particularly product yield all have higher requirement.
In Kapton preparation process, the conventional manufacturing process of drawing and setting or tensioning sizing that adopts reaches required thickness and traditional performance.All need two sides gripping Kapton work in-process Polyamic Acid Film when drawing and setting or tensioning sizing, rely on the clamping device of film both sides to apply horizontal force to film under the high temperature conditions, namely cross directional stretch is carried out to film.Also need during longitudinal stretching to grip film dual-side, avoid film to reduce width to central reduction distortion.
Such as, when Kapton is produced, normally polyamic acid resin is shaped to Polyamic Acid Film by salivation mode on slobbering machine, carries out imidization process by High Temperature Furnaces Heating Apparatus afterwards and obtain Kapton.The bilateral of work in-process film to be gripped in imidization, make film under clamp position, carry out cross directional stretch or tensioning process, and keep this state to complete high temperature imidization, to improve the traditional performance of film.
The clamping device of existing film line both sides is mainly and is arranged on chain pincers on the chain of ring-shaped guide rail or pin is buckled.The imidization that vertical cross directional stretch all will carry out pyroprocessing, particularly Polyamic Acid Film to film needs the process of higher temperature, and maximum processing temperature can reach 500 DEG C.Chain in production line and on chain pincers or pin buckle temperature in high temperature environments and also increase, when stretching entry position clamping film very easily because high temperature causes film side to clip broken or tear, the film of side breakage in follow-up stretching, imidization, shape and open in the technological processs such as folder and easily buckle thorn button bit in chain pincers pincers mouth position or pin and put and cause de-pincers or dropout and pulled open, reduce film stretching quality, even film cannot normally rolling, reduce film product yield, have a strong impact on film line output.
Meanwhile, the edge of Polyamic Acid Film upwarps phenomenon due to too thin easy generation, makes film side edge break build up double-deck limit during the clamping of chain pincers.Running into high temperature in the clamping process of double-deck limit makes chain pincers clip position film easily tear, and causes product can not normally rolling equally, reduction film product yield.
In actual production line, Kapton open pincers position close to traction wrap-up, when driving pincers, film is subject to the comprehensive actions such as tensile stress, drawing tension and winding tension and easily occurs the rupture of membranes such as raw edges, transverse breakage phenomenon, so that film cannot normally rolling, have a strong impact on thin film yield, reduce film yield.
In order to solve edge damage in Kapton preparation process, the problems such as disconnected film, in recent years there is relevant patent application, as the Chinese utility model patent " the entering pincers guide arrangement of membrane production equipment " that notification number is CN202245464U, publication number is the Chinese invention patent " the chain pincers refrigerating unit of film production machinery " of CN102441987A, publication number is the Chinese invention patent " the opening pincers device in advance of film line " of CN102431161A, publication number is the Chinese invention patent " film clamping device of film of film stretching sizing or tensioning standard equipment " of CN102390112A, notification number is the Chinese utility model patent " a kind of solution film stretching rupture of membranes and thickness homogeneous system " of CN203236699U, wherein individually disclose into pincers guide arrangement, chain pincers refrigerating unit, drive pincers device and clamping device etc. in advance, although clamping device is caused clip broken or Tear Film side problem some reduce, but and fail to eliminate this type of fault completely.And these devices all need to transform existing apparatus for production line or replace, apparatus structure is comparatively complicated, also needs higher improvement cost, therefore is difficult to extensively practice.
In addition publication number is the Chinese invention patent " adhesive tape processing method in film production of slobbering machine " of CN102416684A, publication number is the Chinese invention patent " method for adhesive tape treatment in production of thin film by casting machine " of CN102303388A, notification number is the Chinese utility model patent " polyimide film producing device of automatic erasing releasing agent " etc. of CN202147343U is cause rupture of membranes by improving manufacturing process process salivation adhesive tape, disconnected films etc. are abnormal, adjusting process parameter is more, regulation range is large, particularly introduce as wiping releasing agent can cause film too smooth cannot normal use in the side effect etc. of derived product.
Utility model content
The purpose of this utility model is the Polyamic Acid Film that a kind of side of design thickeies, increase gradually with close to outer edge thickness within the scope of the horizontal two side parts one fixed widthes of film, because film both sides are increased by its intensity of retaining part enlarged in thickness thereupon, no longer clipped broken or the fault of raw edges by during clamping, ensure that the quality of film, improve thin film yield.
Another object of the present utility model is the salivation equipment of the Polyamic Acid Film that a kind of side of design thickeies, the side parts aperture of the salivation forming mould lip used certain length of polyamic acid solution increases gradually with close to outer rim aperture, gained polyamic acid is salivated within the scope of the horizontal two side parts one fixed widthes of liquid film and increases gradually with close to outer edge thickness.
The Polyamic Acid Film of a kind of side thickening of the utility model design, increases gradually with close to outer edge thickness in the scope of the wide X of two side parts of its transverse direction, described X=20 ~ 200mm, preferred range is X=60 ~ 120mm.Central film portion thickness is H, and reinforcement thickness is the maximum value of h, h > H, h is (1.2 ~ 3) H.A and A ' point on Polyamic Acid Film cross section bottom line is X with the distance of bottom line homonymy outer rim, and certain point on bottom line outside A is x with the distance of homonymy film outer rim, and the film thickness of this point is h, h=a
1(X-x)
n/ 10
9+ a
2(X-x)
n-1/ 10
7+ a
3(X-x)
n-2/ 10
5+ a
4(X-x)/10
3+ H, n are the integer of 2 ~ 4,1.5 > a
1> 0,1.0 > a
2>-1.0,1.0 > a
3>-1.0,0 > a
4>-1.0.The thickness distribution of Polyamic Acid Film is symmetrical with film longitudinal cenlerline.
The salivation equipment of the Polyamic Acid Film of the side thickening of the utility model design, comprise forming mould, the circulation steel band of the shaping polyamic acid liquid film of carrying salivation and hot-air oven, lip aperture within the scope of the long Y of its forming mould lip two side parts increases gradually with close to outer rim aperture, and gained salivation polyamic acid liquid film laterally two side parts one fixed widthes increases with close to outer edge thickness.Described Y=20 ~ 200mm, preferred range is Y=60 ~ 120mm.In the middle part of forming mould lip, aperture is W, and within the scope of Y, forming mould lip aperture is the maximum value of w, w > W, w is (1.2 ~ 3) W.B and B ' point on straight line M vertical with steel band working direction in the plane in lip right on is Y with the distance of homonymy lip outer end, between B, B ' two, lip aperture is W, certain point on straight line M outside B is y with the distance of homonymy lip outer end, and the lip aperture of this point is w
W=b
1(Y-y)
n/ 10
9+ b
2(Y-y)
n-1/ 10
7+ b
3(Y-y)
n-2/ 10
5+ b
4(Y-y)/10
3+ W, n are the integer of 2 ~ 4,1.5 > b
1> 0,1.0 > b
2>-1.0,1.0 > b
3>-1.0,0 > b
4>-1.0.The lip aperture of forming mould is symmetrical with lip longitudinal cenlerline.
The lip of the long Y scope of described forming mould lip two ends side parts upwarps along outer end, and lower edge is still horizontal linear; Or forming mould lip upwarps along two ends, lower curved under two ends.
Compared with prior art, the advantage of the Polyamic Acid Film that the utility model side thickeies and salivation equipment is: 1, the thickness of Polyamic Acid Film two side parts is greater than interior thickness, the increasing of thickness makes it intensity to be increased, namely when this back draft or tensioning, the chain pincers of clamping device or the thin film strength of fibula origin of force increase, make because clipping broken, pulling open the de-pincers that causes or dropout fault no longer occurs, by testing, the situation of edge damage, disconnected film almost no longer occurs, and film product yield improves greatly; 2, the salivation equipment of the Polyamic Acid Film of these both sides thickening is easy to realize, and only need be adjusted to the lip bolt of mould, the aperture of lip both sides can be made to strengthen, and obtains the lip that both sides aperture strengthens.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the Polyamic Acid Film embodiment that this side thickeies.
Fig. 2 is the front elevational schematic of the salivation apparatus embodiments 1 forming mould lip of the Polyamic Acid Film that this side thickeies.
Fig. 3 is the front elevational schematic of the salivation apparatus embodiments 2 forming mould lip of the Polyamic Acid Film that this side thickeies.
Number in the figure is: 1, film, 2, forming mould lip.
Embodiment
The Polyamic Acid Film embodiment that side thickeies
The cross section of the Polyamic Acid Film embodiment that this side thickeies as shown in Figure 1, increase gradually with close to outer edge thickness in two side parts of its transverse direction, the scope of wide X=100mm, film 1 interior thickness H=0.06mm, the outer edge thickness of side is 0.131mm to the maximum, A and the A ' point of film 1 both sides is X=100mm apart from the distance of homonymy film 1 outer rim respectively, and certain point outside A is x with the distance of homonymy film 1 outer rim, and film 1 thickness of this point is h, this routine n=4
h＝0.073(X-x)
4/10
9+0.069(X-x)
3/10
7+0.613(X-x)
2/10
5-0.045(X-x)/10
3+0.06
Outer most edge x=0,
h＝0.073×10
8/10
9+0.069×10
6/10
7+0.613×10
4/10
5-0.045×10
2/10
3+0.06＝0.131mm。
The thickness distribution of Polyamic Acid Film 1 is symmetrical with film longitudinal cenlerline.
Take uniform thickness as the film of D=60 μm be comparative example, carry out cross directional stretch with the present embodiment film under the draw ratio that identical temperature is identical, the following process of longitudinal stretching and tensioning imidization tests, the two result is as shown in table 1:
Table 1 the present embodiment and comparative example following process situation comparison sheet
From the results shown in Table 1, the Polyamic Acid Film horizontal edge damage number of operation that draws in following process process adopting the side of the present embodiment to thicken is only 1.2% of traditional films.Vertical drawing also obviously is reduced with edge damage number of times in imidization operation, and the total disconnected film number of times on Production Line for Polyimide Film is tending towards 0, and product yield is up to 96.0%, and product yield reaches 92.0%.
The salivation apparatus embodiments 1 of the Polyamic Acid Film that side thickeies
The salivation equipment of the Polyamic Acid Film that this routine side thickeies, comprise forming mould, the circulation steel band of carrying polyamic acid liquid film and hot-air oven, the forming mould of this example is salivation mouth, its lip 2 front view as shown in Figure 2, aperture W=0.262mm in the middle part of lip 2, the lip 2 of the long Y=100mm scope of salivation lip mouth 2 two ends side parts upwarps along outer end, lower edge is still horizontal linear, within the scope of lip 2 both sides 100mm, aperture is with close to outer rim, aperture increases gradually, at lip 2 two ends, aperture is 0.574mm to the maximum, B and B ' point on lip 2 times edges is Y=100mm with the distance of homonymy lip 2 outer end, lip 2 times distances along certain point outside upper B and homonymy lip 2 outer end are y, lip 2 aperture of this point is w, this routine n=4,
w＝1.313(Y-y)
4/10
9+0.838(Y-y)
3/10
7+0.975(Y-y)
2/10
5-0.009(Y-y)/10
3+0.262。
Lip 2 aperture of salivation mouth is symmetrical with lip longitudinal cenlerline.
Gained polyamic acid liquid film interior thickness is 0.262mm, and both sides of the edge maximum ga(u)ge is 0.574mm.The Polyamic Acid Film that the side that just can obtain above-described embodiment after drying thickeies.
The salivation apparatus embodiments 2 of the Polyamic Acid Film that side thickeies
In the salivation equipment of the Polyamic Acid Film of the side thickening of this example, forming mould is extrusion die, its lip 2 front view as shown in Figure 3, extrusion die lip upwarps along two ends, lower curved under two ends, aperture W=0.262mm in the middle part of lip, lip 2 aperture of the long Y=100mm scope of lip 2 two ends side parts, increase gradually with close to outer rim aperture, at lip 2 two ends, aperture is 0.574mm to the maximum, B and B ' puts on the positive frontal plane of lip 2 perpendicular to steel band working direction, with up and down along on equidistant medullary ray, B and B ' point is Y=100mm with the distance of homonymy lip outer end, certain point on above-mentioned medullary ray outside B is y with the distance of homonymy lip 2 outer end, lip 2 aperture of this position is w, this routine n=4,
w＝1.313(Y-y)
4/10
9+0.838(Y-y)
3/10
7+0.975(Y-y)
2/10
5-0.009(Y-y)/10
3+0.262。
Lip 2 aperture of extrusion die is symmetrical with lip longitudinal cenlerline.
The salivation equipment other parts of this example are identical with above-mentioned salivation apparatus embodiments 1.
Preparation method's embodiment 2 of the Polyamic Acid Film that side thickeies
The forming mould of this routine polyamic acid solution salivation is extrusion die, its lip 2 front view as shown in Figure 3, regulate the bolt on edge and lower edge on extrusion die lip 2 two ends, make extrusion die lip 2 upwarps along two ends, lower curved under two ends, aperture W=0.262mm in the middle part of lip 2, lip 2 aperture of the long Y=100mm scope of lip 2 two ends side parts, to increase gradually with close to outer rim aperture, at lip 2 two ends, aperture is 0.574mm to the maximum, obtains the extrusion die of the salivation apparatus embodiments 2 of the Polyamic Acid Film that side thickeies.
Also the curve on the upper and lower edge of lip 2 can be selected through the extrusion die of special processing, and lip 2 upwarps along two ends, and lower curved under two ends, the aperture of the long Y=100mm scope of lip 2 two ends side parts increases gradually with close to outer rim aperture.According to different film thickness requirement during salivation, select different extrusion dies.
Other is identical with above-mentioned preparation method's embodiment 1 for the preparation method of this example.
Above-described embodiment, be only the specific case further described the purpose of this utility model, technical scheme and beneficial effect, the utility model is not defined in this.All make within scope of disclosure of the present utility model any amendment, equivalent replacement, improvement etc., be all included within protection domain of the present utility model.
Claims (7)
1. a Polyamic Acid Film for side thickening, is characterized in that:
Increase gradually with close to outer edge thickness in the scope of the wide X of two side parts of described Polyamic Acid Film transverse direction, described X=20 ~ 200mm, central film portion thickness is H, and reinforcement thickness is h, the maximum value of h > H, h is (1.2 ~ 3) H.
2. the Polyamic Acid Film of side thickening according to claim 1, is characterized in that:
A and A ' point on described Polyamic Acid Film cross section bottom line is X with the distance of homonymy bottom line outer rim, and certain point on bottom line outside A is x with the distance of homonymy film outer rim, and the film thickness of this point is h, h=a
1(X-x)
n/ 10
9+ a
2(X-x)
n-1/ 10
7+ a
3(X-x)
n-2/ 10
5+ a
4(X-x)/10
3+ H, n are the integer of 2 ~ 4,1.5 > a
1> 0,1.0 > a
2>-1.0,1.0 > a
3>-1.0,0 > a
4>-1.0, film thickness distribution is symmetrical with film longitudinal cenlerline.
3. the Polyamic Acid Film of side thickening according to claim 1 and 2, is characterized in that:
Described X=60 ~ 120mm.
4. a salivation equipment for the Polyamic Acid Film of side thickening, comprises forming mould, and the circulation steel band of the shaping polyamic acid liquid film of carrying salivation and hot-air oven, is characterized in that:
The lip aperture of the long Y scope of described forming mould lip two side parts increases gradually with close to outer rim aperture, described Y=20 ~ 200mm, in the middle part of forming mould lip, aperture is W, within the scope of Y, forming mould lip aperture is w, the maximum value of w > W, w is (1.2 ~ 3) W.
5. the salivation equipment of the Polyamic Acid Film of side thickening according to claim 4, is characterized in that:
B and B ' point on straight line M vertical with steel band working direction in the plane in described lip right on is Y with the distance of homonymy lip outer end, between B and B ', lip aperture is W, certain point on lip medullary ray outside B is y with the distance of homonymy lip outer end, and the lip aperture of this point is w
W=b
1(Y-y)
n/ 10
9+ b
2(Y-y)
n-1/ 10
7+ b
3(Y-y)
n-2/ 10
5+ b
4(Y-y)/10
3+ W, n are the integer of 2 ~ 4,1.5 > b
1> 0,1.0 > b
2>-1.0,1.0 > b
3>-1.0,0 > b
4>-1.0, lip aperture is symmetrical with lip longitudinal cenlerline.
6. the salivation equipment of the Polyamic Acid Film that the side according to claim 4 or 5 thickeies, is characterized in that:
Described Y=60 ~ 120mm.
7. the salivation equipment of the Polyamic Acid Film that the side according to claim 4 or 5 thickeies, is characterized in that:
The lip of the long Y scope of described forming mould lip two ends side parts upwarps along outer end, and lower edge is still horizontal linear; Or forming mould lip upwarps along two ends, lower curved under two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856276.5U CN204356269U (en) | 2014-12-30 | 2014-12-30 | The Polyamic Acid Film that a kind of side thickeies and salivation equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856276.5U CN204356269U (en) | 2014-12-30 | 2014-12-30 | The Polyamic Acid Film that a kind of side thickeies and salivation equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204356269U true CN204356269U (en) | 2015-05-27 |
Family
ID=53257750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420856276.5U Withdrawn - After Issue CN204356269U (en) | 2014-12-30 | 2014-12-30 | The Polyamic Acid Film that a kind of side thickeies and salivation equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204356269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497329A (en) * | 2014-12-30 | 2015-04-08 | 桂林电器科学研究院有限公司 | Side-thickened polyamic acid film, tape casting equipment and preparation method thereof |
-
2014
- 2014-12-30 CN CN201420856276.5U patent/CN204356269U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497329A (en) * | 2014-12-30 | 2015-04-08 | 桂林电器科学研究院有限公司 | Side-thickened polyamic acid film, tape casting equipment and preparation method thereof |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150527 Effective date of abandoning: 20180511 |
|
| AV01 | Patent right actively abandoned |