CN204356270U - The Polyamic Acid Film that a kind of side is strengthened prepare facility - Google Patents
The Polyamic Acid Film that a kind of side is strengthened prepare facility Download PDFInfo
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- CN204356270U CN204356270U CN201420856452.5U CN201420856452U CN204356270U CN 204356270 U CN204356270 U CN 204356270U CN 201420856452 U CN201420856452 U CN 201420856452U CN 204356270 U CN204356270 U CN 204356270U
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Abstract
The utility model be the Polyamic Acid Film strengthened of a kind of side prepare facility, in this facility, hot-air oven plenum chamber top sides side air-out mouth bore increases gradually with close to plenum chamber inner side-wall, symmetrical with plenum chamber longitudinal median plane.From the Polyamic Acid Film traveling process that steel band is peeled off, above and/or under avris, heating tube is installed by side, and its mounting height is with the vertical plane symmetry on film longitudinal cenlerline.Film two avris solvent prepared by this facility reduces, and intensity increases, and not easily clips broken and pulls open, and improves thin film yield.This facility only needs local flow improvement, easy to implement.
Description
Technical field
The utility model relates to Kapton producing apparatus, and what be specially the Polyamic Acid Film of a kind of side reinforcement prepares facility.
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 manufacturing process 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.
Along with downstream application product is light, thin, short, little and High Reliability Design requirement, the film thickness specification of the market requirement is tending towards slimming, to its manufacturing technology, quality product particularly product yield all have higher requirement.
In Kapton manufacturing processed, 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 thin film 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 product yield.
On 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 manufacturing processed, 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 be the Polyamic Acid Film strengthened of a kind of side of design prepare facility, in the hot-air oven configured, the air outlet of one or more plenum chamber top side parts strengthens with close to plenum chamber inner side-wall, bore, gradually to provide stronger hot blast.The steam output of film side parts solvent is increased, to reduce the solvent of film side parts thus to improve intensity.Not easily clip broken when film side parts is clamped or the fault of raw edges, ensure that the quality of film, improve thin film yield.
The Polyamic Acid Film that a kind of side of the utility model design is strengthened prepare facility, comprise forming mould, the circulation steel band of the shaping polyamic acid liquid film of carrying salivation, there is the hot-air oven of multiple plenum chamber, many thermal wind exhaustings air outlet is arranged at one or more plenum chamber tops, the medullary ray in each discharge air port is vertical with plenum chamber longitudinal cenlerline, and the air outlet bore within the scope of plenum chamber side parts width Y of the present utility model increases gradually with close to plenum chamber inner side-wall, described Y=20 ~ 200mm.Middle part air outlet bore is W, and within the scope of Y, air outlet bore is w, w > W, and the air outlet bore w near plenum chamber inner side-wall is maximum, be (1.2 ~ 3) W.Plenum chamber top hot blast air outlet bore is symmetrical with plenum chamber longitudinal median plane.
Polyamic Acid Film peels off rear film from steel band, before entering transverse stretching machine, in film traveling process its laterally within the scope of wide Z the top of side parts and/or below heating tube is installed, described Z=20 ~ 200mm, the heating tube that laterally equidistantly arrangement 2 ~ 6 row length directions are parallel with film direct of travel within the scope of wide Z, the length L=u*t that heating tube arranges, wherein u represents film gait of march, t represents the film treatment time, and 0.5m/min≤u≤20.0m/min, 8 seconds≤t≤80 second.Heating tube and film surface vertical range are m, reduce gradually with close to film outer rim m.Above film outer rim and/or the heating tube of below and film surface apart from minimum be M, M be 10 ~ 30mm, m=(1 ~ 8) M.Reduce gradually with the spacing close to film outer rim heating tube and film at the side parts of the wide Z of film, side parts film surface Heating temperature is improved gradually, is 150 ~ 200 DEG C.Above film two side parts and/or the mounting height of below heating tube with the vertical plane symmetry on film longitudinal cenlerline.
Compared with prior art, the advantage preparing facility of the Polyamic Acid Film that a kind of side of the utility model is strengthened is: 1, make that the solvent of Polyamic Acid Film two side parts reduces, intensity increase, 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 not easily occurs, by testing, the situation of edge damage, disconnected film seldom occurs, and film product yield improves greatly; 2, this facility is easy to realize, and only need change the hot blast air outlet bore of hot-air oven plenum chamber side parts, can strengthen side parts air output, and the solvent evaporation amount of polyamic acid salivation liquid film side parts increases, reduces the solvent of side parts film; 3, the increasing of hot blast air outlet bore of hot-air oven plenum chamber side parts and the installation of heating tube are only local flow improvement, easy to implement.
Accompanying drawing explanation
Fig. 1 is that air port schematic diagram is discharged at certain the plenum chamber top one of the hot-air oven preparing facility embodiment 1 of the Polyamic Acid Film that this side is strengthened.
Fig. 2 be the Polyamic Acid Film strengthened of this side prepare facility embodiment 1 self-supporting Polyamic Acid Film from local heating pipe schematic diagram above the film side parts after steel band is peeled off in traveling process.
Fig. 3 is the cross-sectional view of certain avris of Fig. 2.
Fig. 4 is certain the plenum chamber top outlet inlet schematic diagram of the hot-air oven preparing facility embodiment 2 of the Polyamic Acid Film that this side is strengthened.
Number in the figure is: 1, film, 2, plenum chamber top, 3, air outlet, 4, heating tube.
Embodiment
Side strengthen Polyamic Acid Film prepare facility embodiment 1
This side strengthen Polyamic Acid Film prepare facility embodiment, comprise forming mould, the circulation steel band of the shaping polyamic acid liquid film of carrying salivation, there is the hot-air oven of multiple plenum chamber, there is many thermal wind exhaustings air outlet 3 on 2, one or more plenum chamber tops, certain thermal wind exhausting air outlet 3 on 2, certain plenum chamber top as shown in Figure 2, the medullary ray in one discharge air port 3 is vertical with plenum chamber longitudinal cenlerline, 3 air outlets 3 within the scope of this routine plenum chamber partial width Y=100mm are interconnected and become elongated hole, increase gradually with close to this elongated hole bore of plenum chamber inner side-wall.Air outlet 3 bore W=8.0mm in the middle part of this row, within the scope of Y, air outlet 3 bore is w, maximum near the air outlet 3 bore w of plenum chamber inner side-wall, be 2W.2, plenum chamber top hot blast air outlet bore is symmetrical with plenum chamber longitudinal median plane.
Polyamic Acid Film 1 is after steel band stripping, before entering transverse stretching machine, above side parts, heating tube 4 is installed within the scope of its horizontal wide Z=100mm in film 1 traveling process, as shown in Figure 3, the heating tube 4 that laterally equidistantly arrangement 4 row length directions are parallel with film 1 direct of travel within the scope of wide 100mm, the length L=u*t that this routine heating tube 4 arranges, wherein u represents film 1 gait of march, this routine u=6.0m/min, t represent film 1 treatment time, this routine t=45 second; L=4.5m.As shown in Figure 4, the heating tube of this example above film 1 outer rim 4 and the minimum M=20mm of the surperficial vertical range of film 1, strengthening gradually with leaving film 1 outer rim m, is 55.26mm with the top heating tube 4 at film 1 outer rim horizontal throw 100mm place and the vertical range on film 1 surface.Heating tube 4 above side parts makes the temperature of film 1 side-flank surfaces, improves gradually with close to film 1 outer rim, and this routine film 1 outer fringe surface temperature reaches 180 DEG C.
Adopt Polyamic Acid Film prepared by the present embodiment, reduce gradually with close to outer rim solvent in two horizontal side parts, the scope of wide X=100mm, central film portion solvent Q=35%, film outer rim solvent is minimum is 16%.
With solvent evenly for the film of Q=35% is for comparative example, under the draw ratio that identical temperature is identical, carry out cross directional stretch with film prepared by the present embodiment, the following process of longitudinal stretching and tensioning imidization tests, the two result is as shown in table 1:
Table 1 the present embodiment prepares film and comparative example following process situation comparison sheet
From the results shown in Table 1, Polyamic Acid Film horizontal edge damage number of operation that draws in following process process that the side that prepared by the present embodiment is strengthened is only 0.2% 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 tending towards 100.0%, and product yield is up to 99.0%.
Side strengthen Polyamic Acid Film prepare facility embodiment 2
The air outlet 3 on 2, the plenum chamber top of this example is slightly different, other structure and the Polyamic Acid Film that side is strengthened to prepare facility embodiment 1 identical.As shown in Figure 5, air outlet 3 is many slits crossing 2, plenum chamber top, vertical with plenum chamber longitudinal cenlerline.Stitch wide for the wide w that expands as of W=8.0mm, two avris long Y=100mm scope inseam in the middle part of each bar air outlet 3 slit, outer end stitch wide w maximum, be 16mm.2, plenum chamber top each bar air outlet 3 slit seam is wide symmetrical with plenum chamber longitudinal median plane.
The Polyamic Acid Film preparation method embodiment that side is strengthened
The use of this example prepares facility embodiment 1 with the Polyamic Acid Film of upper side edge reinforcement.
The polyamic acid solution of synthesis salivates into polyamic acid liquid film through forming mould on steel band, the steel band being loaded with polyamic acid liquid film becomes the Polyamic Acid Film 1 of self-supporting through hot-air oven drying, within the scope of the wide 100mm of side parts of plenum chamber transverse direction, increase gradually with close to plenum chamber inner side-wall air quantity.In the middle part of plenum chamber, the blast on film 1 surface is F, and within the scope of the wide 100mm of plenum chamber side parts, the blast on film 1 surface is f, and film 1 outer fringe surface blast f is maximum, be 2F.Film 1 Pressures is symmetrical with plenum chamber longitudinal median plane.
The self-supporting Polyamic Acid Film that this example is peeled off from steel band is before entering transverse stretching machine, in traveling process, film 1 side parts is carried out local heat treatment by the heating tube installed above it, this routine film 1 outer fringe surface Heating temperature reaches 180 DEG C, drops to room temperature gradually by edge inside film 1 surface temperature.The side parts local heating time is 60 seconds.Content reduces further, imines rate improves because solvent partly evaporates again to pass through film 1 side parts heated, and its intensity is strengthened.Above film 1 liang of side parts, the mounting height of heating tube is with the vertical plane symmetry on film 1 longitudinal cenlerline.
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 (4)
1. the Polyamic Acid Film strengthened of a side prepare facility, comprise forming mould, the circulation steel band of the shaping polyamic acid liquid film of carrying salivation, there is the hot-air oven of multiple plenum chamber, many thermal wind exhaustings air outlet is arranged at one or more plenum chamber tops, the medullary ray in each discharge air port is vertical with plenum chamber longitudinal cenlerline, it is characterized in that:
Air outlet (3) bore within the scope of the side parts width Y in described plenum chamber top (2) portion increases gradually with close to plenum chamber inner side-wall, described Y=20 ~ 200mm, middle part air outlet (3) bore is W, within the scope of Y, air outlet (3) bore is w, w > W, maximum near air outlet (3) the bore w of plenum chamber inner side-wall, be (1.2 ~ 3) W.
2. the Polyamic Acid Film strengthened of side according to claim 1 prepare facility, it is characterized in that:
Plenum chamber top (2) portion hot blast air outlet (3) bore is symmetrical with plenum chamber longitudinal median plane.
3. the Polyamic Acid Film strengthened of side according to claim 1 prepare facility, it is characterized in that:
Polyamic Acid Film (1) is after steel band stripping, before entering transverse stretching machine, in film (1) traveling process, within the scope of its horizontal wide Z, heating tube (4) is installed in above side parts and/or below, described Z=20 ~ 200mm, the heating tube (4) that laterally equidistantly arrangement 2 ~ 6 row length directions are parallel with film (1) direct of travel within the scope of wide Z, the length L=u*t that heating tube (4) arranges, wherein u represents film (1) gait of march, t represents film (1) treatment time, and 0.5m/min≤u≤20.0m/min, 8 seconds≤t≤80 second, heating tube (4) and film (1) surface distance are m, reduce gradually with close to film (1) outer rim m, above film (1) outer rim and/or the heating tube (4) of below and film (1) surface distance minimum be M, M is 10 ~ 30mm, m=(1 ~ 8) M.
4. the Polyamic Acid Film strengthened of side according to claim 3 prepare facility, it is characterized in that:
Above film (1) two side parts and/or the mounting height of below heating tube (4) with the vertical plane symmetry on film (1) longitudinal cenlerline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856452.5U CN204356270U (en) | 2014-12-30 | 2014-12-30 | The Polyamic Acid Film that a kind of side is strengthened prepare facility |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420856452.5U CN204356270U (en) | 2014-12-30 | 2014-12-30 | The Polyamic Acid Film that a kind of side is strengthened prepare facility |
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| CN204356270U true CN204356270U (en) | 2015-05-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479156A (en) * | 2014-12-30 | 2015-04-01 | 桂林电器科学研究院有限公司 | Polyamide acid film with reinforced sides as well as preparation method and facility thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479156A (en) * | 2014-12-30 | 2015-04-01 | 桂林电器科学研究院有限公司 | Polyamide acid film with reinforced sides as well as preparation method and facility thereof |
| CN104479156B (en) * | 2014-12-30 | 2017-08-11 | 桂林电器科学研究院有限公司 | Polyamic Acid Film, its preparation method and facility that a kind of side is strengthened |
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