CN102294815B - Resin film manufacturing device and manufacturing method of resin film - Google Patents
Resin film manufacturing device and manufacturing method of resin film Download PDFInfo
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- CN102294815B CN102294815B CN201110175720.8A CN201110175720A CN102294815B CN 102294815 B CN102294815 B CN 102294815B CN 201110175720 A CN201110175720 A CN 201110175720A CN 102294815 B CN102294815 B CN 102294815B
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- film
- air
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- resin film
- gap nozzle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
- B29C48/917—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means by applying pressurised gas to the surface of the flat article
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a resin film manufacturing device. In the air knife film manufacturing method of a resin film, like a polyamide film, the low molecular substances, like the monomer, the low polymer can not be pasted to or accumulated on a split face on a front end of a slit nozzle of the air knife device, and the film manufacturing state can be maintained for a long time. A fused resin (2) in a flake-like shape is obtained after being squeezed out from a die (1), and then the fused resin is arranged on a surface of a rotating cooling roller (3), and next the air knife device (4) ejects air to the resin (2) arranged on the surface of the rotating cooling roller (3) in order to make the resin (2) closely contact with the surface of the rotating cooling roller (3), and finally the resin is formed by cooling. An auxiliary nozzle (6) is arranged in parallel with the slit nozzle (5) which is used to eject air for the air knife device (4). The auxiliary nozzle (6) can send air (8) toward the front end of the slit nozzle (5).
Description
Technical field
The present invention relates to the manufacturing installation of resin film, relate to the manufacturing installation of the resin film at once resin being carried out to cooling curing after extruding operation in detail, particularly relate to the manufacturing installation being applicable to the resin film manufacturing polyamide film.
Background technology
When utilizing T modulus method to manufacture the resin films such as polyamide film, extruded with sheet-shaped molten by mould and the fused films that obtains is drawn out to the rotary chill roll (hereinafter referred to as " CR ") and cooled solidification that are referred to as casting roller (casting roller), be configured as cast film (cast film) thus.
In the past, as method melting sheet material being pressed against CR in the film making process of resin film, adopt and utilize air knife (air knife) to spray the method (hereinafter referred to as " air knife method ") of air equably at the width of melting sheet film.This technology is such as recorded in patent document 1 etc.
But, in air knife method, along with the passing of activity duration, following phenomenon can be there is, namely the low-molecular material of monomer, oligomer and so on adhere to and be piled up in air knife apparatus, for spraying (rip) face of splitting of the front end of the gap nozzle of air.The low molecule attachment being piled up in the front end of gap nozzle becomes the reason occurring following reluctant problem:
(1) foreign matter defect is caused on this attachment falls in masking sheet material
(2) the air stream of the original narrow shape even and strong at the width of film is guided and local confusion by the deposit of the front end of gap nozzle, and result, brings out cooling deviation, the thickness deviation of wire at cast film streamwise.
When cast film is polyamide film, because general polyamide is the resin that crystallinity is high, therefore the cooling deviation of the wire of this flow direction can cause the deviation of crystallization degree, becomes the ductile reason in the mobile fault of follow-up water suction treatment process, infringement extension process.During when producing this mobile fault, to ductile infringement, can impact the thickness, surface smoothness, shrinkage etc. of physical property, particularly film of the polyamide film after extension.Therefore, cooling equably cast film is the important factor relevant to thin film fabrication.
But the physical property drawback of passing in time in this air knife method not yet solves.
Therefore, in order to avoid this unfavorable condition, production line must be stopped termly, be piled up in the attachment deposit of the front end of the gap nozzle of air knife except attachment removal, industrial continuous production can be hindered.
[patent document 1] JP-H09-155952A
As mentioned above, in the prior art, existence industrially cannot meet the ratio of performance to price (costperformance) and guarantee the problem of stable continuous production.
Summary of the invention
Therefore, the object of the invention is to, in the air knife masking method of the resin films such as polyamide film, the low-molecular material such as monomer, oligomer can not be made to adhere to the parting plane being piled up in the slit spray nozzle front end of air knife apparatus, stable masking state can be maintained for a long time.
In order to solve above-mentioned problem, the present inventor has carried out studying with keen determination repeatedly, and result has reached the present invention.
Namely, the manufacturing installation of resin film of the present invention is film film forming apparatus, in the apparatus, make to be melt extruded in the form of sheets by mould and the resin be shaped along rotation chill roll surface, from air knife apparatus to the resin ejection air along this rotation chill roll surface, to make this resin and to rotate chill roll intimate surface contact, carry out cooling forming thus, the feature of the manufacturing installation of this resin film is, with be provided with auxiliary jet abreast for the gap nozzle spraying air in air knife apparatus, this auxiliary jet can send air towards the front end of gap nozzle.
According to the manufacturing installation of resin film of the present invention, preferred auxiliary jet is arranged on the flow direction along film and is in the position in the upstream side of gap nozzle and/or the downstream of gap nozzle.
Further, according to the manufacturing installation of resin film of the present invention, the air supply direction preferably sending air from auxiliary jet tilts from the central portion side along thin-film width direction towards the end side along thin-film width direction.
According to the present invention, by from auxiliary jet manufacture towards the air stream of the gap nozzle of air knife apparatus, the front end air-supply supply of gap nozzle is not contained to the air of monomer gas, thus the effect of the gas barrier covering monomer gas can be obtained.Therefore, according to the present invention, the low-molecular material such as monomer, oligomer can not be made to adhere to the parting plane being piled up in slit spray nozzle front end, stable masking state can be maintained for a long time.
Accompanying drawing explanation
Fig. 1 is the figure of the manufacturing installation of the resin film that embodiments of the present invention are shown.
Fig. 2 is by the figure shown in the amplification of the major part of Fig. 1.
Fig. 3 is the stereogram of the variation that auxiliary jet is shown.
Fig. 4 is the sectional view of the major part of the auxiliary jet of Fig. 3.
Fig. 5 is the figure of other variation that auxiliary jet is shown.
Fig. 6 is the figure of the other variation that auxiliary jet is shown.
Fig. 7 is the figure of another other variation that auxiliary jet is shown.
Fig. 8 is the fragmentary perspective cross sectional view of the auxiliary jet of Fig. 7.
Fig. 9 is the figure of another other variation that auxiliary jet is shown.
Label declaration
1:T mould; 2: polyamide film; 3:CR; 4: air knife apparatus; 5: gap nozzle; 6: auxiliary jet; 8: air.
Detailed description of the invention
From phenomenon aspect, during to making Polyamide resin film, the mechanism that low-molecular material is piled up in the front end of the gap nozzle of air knife apparatus is described.Namely, there is following phenomenon: after starting to make film, along with passage of time, the spray nozzle front end at a right angle relative to the inwall 2 being formed with gap nozzle parting plane, in other words as the face at a right angle with the air stream sprayed from spray nozzle front end, the low-molecular material such as monomer, oligomer is attached to this face and is piled into icicle shape.Think that this situation causes because of following reason.That is, when carrying out the melt extruding of polyamide, a large amount of monomers is generated because of depolymerization reaction.This monomer becomes the monomer gas produced from the fused films being extruded into film-form by mould.On the other hand, be involved in the air containing monomer gas around air knife apparatus from the air stream of the narrow shape of gap nozzle ejection and bring out with stream, this flows towards parting plane side along gap nozzle outer wall with stream.In addition, infer to there is following situation: near the parting plane of slit spray nozzle front end, owing to forming eddy current by the sweep with stream, thus monomer gas is stranded in this position and piles up growth.
Particularly in the middle of above-mentioned parting plane, the attachment being positioned at the parting plane place in downstream relative to the attachment packing ratio at the parting plane place that the flow direction of film is positioned at upstream side (die side) is piled up significantly.
Like this, grow up if low-molecular material is piled up at the parting plane of slit spray nozzle front end, then the ejection air stream of narrow shape turns round partly/spreads, and produces the confusion of air stream.This confusion ejection air stream just under, width be straight line shape, contact position that fused films contacts with CR can partly before and after unordered variation, therefore, the cooling deviation of wire can be produced at cast film streamwise, thus cause the deviation of film physical property.
Therefore, this invention is intended to not make low-molecular material adhere to and the parting plane being piled up in this slit spray nozzle front end, long-time stable also carries out CR cooling constantly.
The present invention is described in detail below.
Fig. 1 illustrates the apparatus for manufacturing thin film based on air knife method of the present invention.The polyamide film 2 obtained by T mould 1 melt-shaping is extruded by the surface towards CR3, and is drawn out to CR3.Utilize gap nozzle 5 pairs of polyamide films 2 of air knife apparatus 4 apply air pressure and make polyamide film 2 and CR3 intimate surface contact, make polyamide film 2 cooling curing thus.
In the manufacturing installation of Fig. 1, be arranged side by side auxiliary jet 6,6 at the sidepiece of gap nozzle 5.In illustrated manufacturing installation, auxiliary jet 6,6 is arranged at upstream side (side close to T mould 1) and downstream (side contrary with T mould 1) these both sides of gap nozzle 5 along the flow direction of film 2.
As the gap nozzle 5 of air knife apparatus 4, such as can enumerate following gap nozzle etc.: be formed as being made up of main body and nozzle and utilize bolt by structure fixing to fixed nozzle and movable nozzle, and the gap nozzle of mode for the air sent into by high pressure blower is sprayed from the nozzle of slit-shaped in the width direction; Or, be formed as holding shim between the tabular air knife parts be divided into two parts and utilize bolt to be fixed and at one end form the structure of the nozzle of slit-shaped, and for spraying the gap nozzle of this compressed-air actuated mode after compressed air is imported internal chamber from the nozzle of slit-shaped.That is, the air knife of the structure usually used can be used.
As shown in Figure 2, gap nozzle 5 is arranged opposite with the outer peripheral face of CR3, and is formed with parting plane 7 in gap nozzle 5 front end.Can obtain making the film 2 of molten condition and the degree of the effect of CR3 close contact as long as gap nozzle 5 is the interval between its parting plane 7 and outer peripheral face of CR3, can at random set.This interval is generally 1 ~ 10mm, is preferably 1 ~ 5mm.As long as namely the air pressure of air knife can obtain making film 2 and the pressure of the effect of CR3 close contact from the air pressure of the air 12 of gap nozzle 5 ejection, there is no particular determination.
In the present invention, as mentioned above, auxiliary jet 6 is disposed side by side on the sidepiece of gap nozzle 5, namely, with the gap nozzle 5 configured throughout the width of film 3 auxiliary jet 6 is set abreast, from auxiliary jet 6, the outer wall of air 8 along gap nozzle 5 is sent towards the front end of gap nozzle 5.
Such energy obtains following gas barrier (air shutter) effect: by manufacturing with stream from auxiliary jet 6 along the outer wall of gap nozzle 5, front end air-supply supply towards gap nozzle 5 does not contain the air 8 of monomer gas, thus is sheltered with monomer gas by the particularly parting plane 7 of gap nozzle 5.
Auxiliary jet 6 can be formed as suitable structure.Such as, as shown in Figure 1 and Figure 2, the nozzle form of the tapering structure in front end can be formed as, also as shown in Figure 3 and 4, the structure being provided with a row pore 10 at pipe 9 can be formed as.In addition, also as shown in Figure 5, the parts 11 in thin U-shaped cross section can be processed and are processed into the form of small-sized air knife.Or, as shown in Figure 6, the structure etc. of the multiple narrow gas nozzle 13 of width arranging along film 2 can be applied.But, be not limited to said structure.
Form auxiliary jet 6 material can from known material suitably choice for use.Such as, stainless steel, iron and steel, aluminium, copper etc. can be enumerated as metal material, polycarbonate resin, polyamide, reinforced polyester resin etc. can be enumerated as resin material.
As mentioned above, auxiliary jet 6 is arranged on front side (be upstream side relative to the flow direction of film 2) and/or rear (downstream) of gap nozzle 5.In the position than gap nozzle 5 upstream side and the position both sides of side arrange auxiliary jet 6 is farther downstream most effects than gap nozzle 5.In addition, although reason indefinite, only at upstream side or only arrange auxiliary jet 6 in downstream, although effect weakens slightly but still is effective.
Can the mode of obstacle being caused at random to set to film masking from the flow velocity of the air 8 of auxiliary jet 6 ejection.It has been generally acknowledged that 1/2 ~ 1/10 of the flow velocity of the air stream 12 for the air knife shown in Fig. 2 is suitable.It is specifically 0.5 ~ 30m/ second.
In fig. 2, the distance of the air ejiction opening of 14 expressions from the parting plane 7 of gap nozzle 5 to auxiliary jet 6.This distance 14 can suitably set.
As shown in Figure 3 and 4, the air supply direction of auxiliary jet 6 can be made to tilt slightly towards the both ends of the width of film 2 from the central authorities of the width of film 2 towards left and right, namely.This is because by blowing slightly obliquely from central authorities towards left and right, air stream is divided into the air stream in two directions to the left and right along thin-film width direction, the monomer gas produced from fused films 2 becomes by the gas flow of discharging towards left and right.
As making the air supply direction of auxiliary jet 6 from central authorities towards the method tilted, such as, arranging at pipe 9 in the type of pore 10 as shown in Figure 3 and 4, the structure processing the pore 10 tilted sideling towards left and right from the width central portion of film 2 at pipe 9 can enumerated.In addition, as shown in the figure, the pore 10 of central portion can not tilt but be vertically formed relative to the face of film 2.
Or, if the type of the small-sized air knife shown in Fig. 5, then can enumerate the structure that such inside at parts 11 as shown in Figure 7 and Figure 8 arranges the cowling panel 15 that court tilts.In addition, if arrange the type of multiple narrow gas nozzle 13 along the width of film 2 as shown in Figure 6, then can enumerate adjustment as shown in Figure 9 laterally namely along film 2 width towards inclination angle carry out the structure of installing gas nozzle 13 grade.In addition, preferably to the air supply position of auxiliary jet 6, also suitably regulate from auxiliary jet 6 to the distance of film 2, angle of inclination etc.
CR3 is the rotation chill roll of the structure with the circulating cooling medium all the time in inside.As the material on surface that can be used in CR3, the hard chromium plating, ceramic spray plating coating etc. that implement matsurface processing can be enumerated.Wherein, for the roller using ceramic spray plating coating, the attachment of monomer is less, is preferred.
Freely can be selected by the setting of the surface temperature of CR3 from the temperature of the film 2 of CR3 stripping.As mentioned above, when film 2 is polyamide film, the preferably scope of 15 ~ 60 DEG C.This temperature can regulate in the temperature of the water of the inner loop of CR3 or the surface roughness of change CR3 by changing.But below 15 DEG C, easily at the surface condensation water droplet of CR3 when carrying out operation under normal temperature atmosphere, the contiguity deviation caused by moisture film easily becomes the obstacle of masking aspect.The upper limit of temperature that is 60 DEG C be the temperature higher than the vitrification point of polyamide.When becoming the temperature higher than 60 DEG C, becoming difficulty from the stripping of CR3, film being caused because of peel stress being longitudinally stretched, therefore easily significantly damaging its thickness, flatness.
The cast film utilizing manufacturing installation of the present invention to obtain can extend further and form extension polyamide film.
The various methods such as longitudinal or horizontal an axle extension, successively two axles extend, two axle extensions simultaneously can be enumerated as its extension method.Wherein, about polyamide film, advantageous applications successively two axles extensions, simultaneously two axles extends.And, as simultaneously two axle extension methods, convergent-divergent (pantagraph) formula, spiral, linear motor formula etc. is there is in the type of drive of clamper, but in the present invention, excellent in the easness particularly utilizing linear motor to change in multiplying power the mode that clamper drives respectively, running at high speed property, be therefore most preferred.
As the polyamide that manufacturing installation of the present invention can be utilized to carry out filming, nylon 6, nylon66 fiber are representative examples, but in addition single polymers such as nylon 11, nylon 12 also can use.Above-mentioned polyamide mixture each other, copolymer etc. also can use.Known additive, such as stabilizing agent, antioxidant, filler, lubricant, anti-live agent, anticaking agent, colouring agent etc. can be contained in above-mentioned polyamide.
[embodiment]
In order to be easier to understand the present invention, enumerate comparative example and embodiment is specifically described.But the present invention is not limited to following embodiment.
The assay method of the characteristic value in following embodiment, comparative example is as follows.
(1) counting of foreign matter
Utilize coaxial (inline) foreign matter detector to monitor that size is the foreign matter of 0.2mm × more than 0.2mm the whole width figure (map) of film, and calculate the average foreign matter number of every length 4000m.In addition, although also comprise other foreign matters except the foreign matter caused because monomer falls, very little by the result of graphical analysis other foreign matter ratios known.Foreign matter detector uses " MaxEye.F (the camera SCHM4025) " of Hewteck Inc..
The judgement that two axles extend the foreign matter number of polyamide film is carried out according to following benchmark.
Zero: foreign matter number is well less than 5/4000m
△: more than 5, foreign matter number boundary ~ less than 20/4000m
×: bad more than the 20/4000m of foreign matter number
(2) mensuration of thickness deviation
The width of film is called TD direction, the flow direction of film is called MD direction.
Infrared thickness gauges is utilized to measure with the spacing of 25mm the thickness that two axles extend polyamide film along TD direction, and carry out the mensuration at each measuring point place in 40 these TD directions with the spacing of 100m along MD direction, using the thickness deviation of the maximum deflection difference value in 40, the MD direction at each for TD direction measuring point place as this point.
Infrared thickness gauges uses (the infrared transmitting type sensor " TFG710 ") of NDC Infrared Engineering Inc..
The judgement that two axles extend the thickness deviation of polyamide film is carried out according to following benchmark.
Zero: the good thickness deviation of thickness deviation is less than 1.0 μm
△: thickness deviation boundary thickness deviation is more than 1.0 μm ~ less than 2.0 μm
×: the bad thickness deviation of thickness deviation is more than 2.0 μm
Embodiment
Use the CR of the T mould of the extruder of bore 65mm, width 630mm, diameter 600mm to carry out polyamide extruded resin, and make the cast film of thickness 150 μm with the speed that 40m/ divides.Then, at the cast film making to obtain by after the water suction treating apparatus that is set as 50 DEG C, utilize continuously simultaneously two axle elongators make this cast film 3.0 times extending longitudinally, at laterally extending 3.3 times, two axles obtaining thickness 15 μm extend polyamide films.
The width of air knife apparatus is 600mm, is set to 3mm between air knife front end and CR, utilizes air knife apparatus with the flow velocity ejection air of 30m/ second, fused films is pressed against CR surface.The temperature on the surface of CR is adjusted to 20 DEG C.
For auxiliary jet, the hole of φ 2mm is arranged (in central vertical along axis direction with the spacing of 10mm configuration one at the stainless steel tube of internal diameter φ 10mm, the hole of left and right is 20 ° relative to the inclination angle of vertical direction), relative to gap nozzle, above-mentioned auxiliary jet is set at the upstream side of the flow direction of film and downstream, and the ejiction opening of the air of auxiliary jet is arranged on the position leaving 50mm from the parting plane of gap nozzle, and its emission direction is regulated then fixes.The flow velocity of the air sprayed from auxiliary jet along the outer wall of gap nozzle is 6m/ second.
It the results are shown in table 1.Even if after 24 hours, foreign matter number is 2/4000m, is good.Thickness deviation is 0.8 μm, and no exceptions variation.
Comparative example
Compared with embodiment, make the structure not using auxiliary jet into.All same with embodiment in addition, obtain two axles and extend polyamide film.
It the results are shown in table 1.After 12 hours, foreign matter number is 21/4000m, and foreign matter number is bad.In addition, thickness deviation is 2.6 μm, there occurs abnormal variation.
Therefore, in order to ensure the quality of manufactured film, have to stop production line and implement to clean.
[table 1]
Claims (7)
1. the manufacturing installation of a resin film, it is film film forming apparatus, in the apparatus, make to be melt extruded in the form of sheets by mould and the resin be shaped along rotation chill roll surface, and from air knife apparatus to the resin ejection air along this rotation chill roll surface, to make this resin and to rotate chill roll intimate surface contact, carry out cooling forming thus
The feature of the manufacturing installation of described resin film is,
Be provided with auxiliary jet abreast for the gap nozzle spraying air in air knife apparatus, this auxiliary jet can be sent along the outer wall of gap nozzle towards the front end of gap nozzle as the air with stream, thus the parting plane of gap nozzle and monomer gas can be sheltered.
2. the manufacturing installation of resin film according to claim 1, is characterized in that,
Auxiliary jet is arranged on the flow direction along film and is in the position in the upstream side of gap nozzle and/or the downstream of gap nozzle.
3. the manufacturing installation of resin film according to claim 1 and 2, is characterized in that,
The air supply direction sending air from auxiliary jet tilts from the central portion side along thin-film width direction towards the end side along thin-film width direction.
4. the manufacturing installation of resin film according to claim 1 and 2, is characterized in that,
Auxiliary jet can send the air-flow of the flow velocity in 1/2 ~ 1/10 scope that flow velocity is the flow velocity of the air-flow that gap nozzle is sent.
5. the manufacturing installation of resin film according to claim 1 and 2, is characterized in that,
The surface rotating chill roll has been applied in pottery and has sprayed coating.
6. a manufacture method for resin film, is characterized in that,
Use the manufacturing installation of the resin film in claim 1 ~ 5 described in any one.
7. a manufacture method for resin film, is characterized in that,
Use the manufacturing installation of the resin film in claim 1 ~ 5 described in any one to manufacture cast film, and this cast film is extended and two axle orientations to two directions in length and breadth.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-144346 | 2010-06-25 | ||
| JP2010144346A JP2012006271A (en) | 2010-06-25 | 2010-06-25 | Device for producing resin film |
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| Publication Number | Publication Date |
|---|---|
| CN102294815A CN102294815A (en) | 2011-12-28 |
| CN102294815B true CN102294815B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110175720.8A Active CN102294815B (en) | 2010-06-25 | 2011-06-20 | Resin film manufacturing device and manufacturing method of resin film |
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| CN (1) | CN102294815B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922649A (en) * | 2012-11-02 | 2013-02-13 | 浙江福鑫龙机械有限公司 | Air nozzle film-blowing device |
| CN106362341A (en) * | 2016-10-07 | 2017-02-01 | 上海格拉曼国际消防装备有限公司 | Automatic purging cleaning device for fire hose |
| CN107718165B (en) * | 2017-11-23 | 2024-02-13 | 广州共享能源科技有限公司 | Air knife device |
| US11920863B2 (en) * | 2018-05-01 | 2024-03-05 | Universal Can Corporation | Nozzle, drying device, and method for producing can body |
| JP7150392B2 (en) * | 2018-06-06 | 2022-10-11 | 株式会社ディスコ | Slit nozzle manufacturing method and slit nozzle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1273427A2 (en) * | 2001-07-06 | 2003-01-08 | Unitika Ltd. | Polyamide film production method |
| CN1472060A (en) * | 2002-08-03 | 2004-02-04 | ���Һ����е�����ɷ�����˾ | Device for polishing and cooling plastic tapes from gas nozzles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169816A (en) * | 1983-03-16 | 1984-09-25 | Japan Steel Works Ltd:The | Air knife of resin film producing device |
| JPS629941A (en) * | 1985-07-08 | 1987-01-17 | Tonen Sekiyukagaku Kk | Preparation of multi-layer film |
-
2010
- 2010-06-25 JP JP2010144346A patent/JP2012006271A/en active Pending
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- 2011-06-20 CN CN201110175720.8A patent/CN102294815B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1273427A2 (en) * | 2001-07-06 | 2003-01-08 | Unitika Ltd. | Polyamide film production method |
| CN1472060A (en) * | 2002-08-03 | 2004-02-04 | ���Һ����е�����ɷ�����˾ | Device for polishing and cooling plastic tapes from gas nozzles |
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| Publication number | Publication date |
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| JP2012006271A (en) | 2012-01-12 |
| CN102294815A (en) | 2011-12-28 |
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