CN102583079B - The manufacture method of the film of film coiling device and use film coiling device - Google Patents

Abstract

The invention provides the manufacture method of the film of a kind of film coiling device and use film coiling device, described film coiling device makes the capstan head being provided with multiple described wireline reel rotate centered by S. A., winding is made to roll up movement from winding position whereby, the wireline reel next carrying out reeling is made to move to described winding position, film coiling device comprises air spray unit, and air spray unit comprises: air nozzle, air leading-in conduit road and travel mechanism.The ejiction opening of air nozzle and winding are rolled up the scope that surperficial distance is maintained at regulation by travel mechanism's one side, one side follows the change of the winding diameter being wound around volume and air nozzle is moved, wherein for each wireline reel, air spray unit and capstan head are integrally arranged, and air spray unit rotates together along with the rotation of capstan head.

Description

The manufacture method of the film of film coiling device and use film coiling device

Technical field

The present invention relates to the film coiling device of a kind of capstan head (turret) formula and use the manufacture method of film of film coiling device, the present invention be more particularly directed to a kind of device improvement when air pushing (airpress) mode being applied to the film coiling device of rotary type tower.

Background technology

Such as; the optical thin film of protective film or optical compensating film and anti-reflection film etc. needs the planar performance of height; triacetyl cellulose (the TriacetylCellulose that described protective film will manufacture; etc. TAC) film itself for the protection of the Polarizer of liquid crystal indicator, described optical compensating film be via being coated with the film manufactured, dry etc. treatment step and the film that manufactures.

Film is generally manufactured by solution film-forming method or melting masking method, and the film manufactured can be wound in wind2.Therefore, the winding fault of winding deviation during winding, winding gauffer, scratch (comprising the small scratch of 50 μm ~ about 100 μm), the depressed deformation of film central portion, the distortion (cave in or subside) of film end (being commonly referred to as ear) etc. becomes the large problem in quality.

The winding fault of film associates with ensuing coating fault or dry fault phase, and therefore, user (user) can carry out tightened inspection to product film.Especially because of broadization (such as more than 2000mm) of film in recent years, the air be involved in when reeling is difficult to be discharged, and therefore, is difficult to not make winding process produce winding fault.

Generally speaking, when the winding film of advance is formed in wireline reel be wound around volume (roll) time, in the advance process of film entrained carry air can be involved in thin layer each other.Whereby, volume becomes lax, thus can produce the winding fault of winding deviation etc.Described depression or to subside be following phenomenon, that is, be involved in when reeling to being wound around carrying air and can discharge from winding volume along with the process of time in volume, and carrying the part that air has been discharged can sink.Therefore, in order to obtain the winding hardness that can not produce winding deviation, when reeling, must be got rid of carrying air.Especially in recent years, along with thin-film width becomes greatly, be involved in when reeling and be difficult to discharge from being wound around the both ends of rolling up to the air that carries being wound around volume, therefore, easily produce winding fault.

By the general method for winding in the past carrying air and got rid of, it is the method that winding tension (tension) is improved.But, there is following defect in the method that winding tension is improved, namely, aeriferous removing property is taken for (especially for thin-film width direction central portion) low, and stress can concentrate on the ear in thin-film width direction and produce ear's distortion (depression in knurling (knurling) portion or stretching, extension).

Therefore, developed following wind2, even if this wind2 does not improve winding tension, also can have been got rid of carrying air, such as, there is patent documentation 1 ~ patent documentation 2.

The wind2 of patent documentation 1 is that one side utilizes the winding volume face of compression roller (roller) to winding starting point to carry out air pushing, and one side reels, and is got rid of by the air that carries be involved in being wound around volume whereby.

But, for the wind2 of patent documentation 1, because compression roller and pellicular front come in contact, therefore, cannot prevent by the scratch of generations such as (slip) of skidding.If especially the foreign matter of dust etc. be attached to be wound around volume surface, then easy because of between compression roller and be wound around roll up between foreign matter and produce large scratch.

Therefore, especially for the wind2 of optical thin film, as a rule, adopt and do not roll up the wind2 that the surperficial air come in contact pushes the such as patent documentation 2 of mode with winding.

The wind2 of patent documentation 2 is injected into from air nozzle (airnozzle) by air be wound around volume surface and carry out air pushing, whereby, not roll up with winding the state come in contact, can be got rid of by the air that carries be involved in being wound around volume.

[prior art document]

[patent documentation]

[patent documentation 1] Japanese Patent Laid-Open 2002-220143 publication

[patent documentation 2] Japanese Patent Laid-Open 2005-096915 publication

But, when the wind2 of rotary type tower adopts air to push mode, as shown in Figure 8, winding volume 1 movement from winding position being in the state that is rolled up that winding has terminated must be made, and make the wireline reel 2 next carrying out reeling move to winding position, the wind2 of described rotary type tower comprises multiple wireline reel, and does not make manufacturing line stop and reeling to film continuously.Therefore, must capstan head 3 be made to revolve turnback centered by S. A. 3A.Can produce following problem in the case, that is, when capstan head 3 rotates, air nozzle 4 becomes obstruction, and air nozzle 4 must be made temporarily to retreat to outside the swing-around trajectory 5 of capstan head 3.Herein, the swing-around trajectory of so-called capstan head 3, as shown in Figure 8, refer to the track (long and short dash line) that the outer most edge of following winding volume 1 is described, the distance that described winding volume 1 and the center O of the S. A. 3A of capstan head are separated by is the longest.

Because described air nozzle 4 is kept out of the way, when reeling at the outer circumferential side of the winding volume 1 terminated that reels, air pushing can not be carried out to the surface being wound around volume 1, therefore, the winding fault producing described winding deviation etc. at outer circumferential side can be caused.As the countermeasure of described winding fault, in the past, when reeling at outer circumferential side, winding tension is improved, thus tackle described winding fault.

But, when reeling at outer circumferential side, even if improve winding tension, also winding fault cannot be solved.Especially when thin-film width is the large width films of more than 2000mm, cannot be got rid of carrying air fully, therefore, being caused the winding fault producing depression or subside.In addition, even if for the film that thin-film width is below 2000mm, when making winding tension improve, also winding deviation fault is created continually.

Summary of the invention

The present invention is the invention in view of situation as above, object is the manufacture method of the film providing following film coiling device and use this device, even if when the mode that pushed by air is applied to the film coiling device of capstan head mode, when capstan head rotates, also without the need to making air nozzle keep out of the way, and can from winding, the pushing of line space gas is involved in winding, till winding terminates, therefore, can be got rid of carrying air efficiently, being best suited for and the film of the planar performance needing height is reeled.

In order to realize described object, the film coiling device of a mode of the present invention is a kind of film coiling device, the winding film of the band shape of advance is formed in wireline reel and is wound around volume, the capstan head being provided with multiple described wireline reel is rotated centered by S. A., make the winding of the state that is rolled up roll up whereby to move from winding position, the wireline reel next carrying out reeling is made to move to described winding position, the feature of the film coiling device of this rotary type tower is: for each described wireline reel, described air spray unit (unit) and described capstan head are integrally arranged, described air spray unit rotates together along with the rotation of described capstan head, described air spray unit at least comprises: air nozzle, air is injected into the described surface being wound around volume, air pushing is carried out to the described surface being wound around volume, air leading-in conduit road, hollow ground forms described S. A., and air is directed into described air nozzle via this S. A., and travel mechanism, the ejiction opening of described air nozzle and the described distance of rolling up surface that is wound around are maintained predetermined distance by one side, and one side follows the change of the winding diameter of described winding volume and described air nozzle is moved.

, so-called via S. A., air being directed into described air nozzle herein, except being be used as by S. A. itself except pipe arrangement that air pushes, also comprising the meaning be disposed in by air hose (hose) in S. A..

According to the film coiling device of described mode, air blow-off mechanism rotates together along with the rotation of capstan head, and described air blow-off mechanism comprises: air nozzle, air is injected into the surface being wound around volume, carries out air pushing to the surface that this winding is rolled up; Travel mechanism, makes air nozzle move; And air leading-in conduit road, air is directed into air nozzle.Whereby, without the need to as in the past, switching to carry out winding to film, when making capstan head rotate, air nozzle temporarily being retreated to outside the swing-around trajectory of capstan head.Therefore, certainly can from starting to carry out winding to film, air pushing being carried out to the surface being wound around volume, even if carry out film making capstan head rotate reeling in the winding process of the winding volume outer circumferential side switched, also positively can carry out air pushing to winding volume surface.

Therefore, even if when the mode that pushed by air is applied to the film coiling device of capstan head mode, when capstan head rotates, also without the need to as in the past, air nozzle is kept out of the way, and can from start by described winding film in wireline reel to winding terminates, to winding involve in line space gas pushing.Whereby, can prevent in a effective manner by the winding fault of carrying air and causing.

According to the present invention, described air spray unit is preferably configured in the swing-around trajectory of described capstan head.Whereby, when capstan head rotates, air spray unit can not come in contact with the various kinds of equipment be configured in around capstan head, and device can be made to realize densification.

According to the present invention, preferably swivel joint (rotaryjoint) is arranged at described S. A., described swivel joint rotatably links the air line till the air-source set by the outside until described capstan head.Whereby, air leading-in conduit road can not the distortion because of the rotation of capstan head.

The present invention is preferably following formation, namely, be provided with guide reel (guideroller), this guide reel is when described capstan head rotates, rotate together with capstan head, and wrapped up (wrap) by being wound in the described film being wound around volume, and in the progress path of film being wrapped in described guide reel, be configured with described air spray unit.

Whereby, guide reel can limit the progress path of film, and make when capstan head rotates, the film in winding process can not come in contact with air spray unit, therefore, film and air spray unit can not be made to come in contact and cause film impaired.

In the present invention, the ejiction opening of described air nozzle and the described distance of rolling up surface that is wound around are maintained 2mm ~ 15mm by described travel mechanism preferably one side, and one side makes described air nozzle move.If described apart from less than 2mm, then the ejiction opening of air nozzle likely can roll up surface with winding and comes in contact, and if described distance more than 15mm, then the surface the being wound around volume pressure carried out when air pushes is not sufficient to positively to carry air and is got rid of.In addition, even if the winding diameter being wound around volume changes, travel mechanism still can, with suitable pressure, make the air bias pressure for the surface being wound around volume remain fixing.

In the present invention, described air leading-in conduit road is preferably from described S. A., branch to the house steward (headerpipe) arranged for each described air nozzle, and from described house steward via many flexible hoses (flexiblehose), along described air nozzle Width and equably described air is imported.Whereby, even if air nozzle width corresponds to the thin-film width of winding and becomes large, also along Width, air pushing can be carried out to the surface being wound around volume equably.

In the present invention, preferably switching mechanism is arranged at described each house steward, described switching mechanism within 3 seconds, can switch the air flowing to each wireline reel air nozzle from S. A..Whereby, while multiple wireline reel winding film finishing switching each other, air pushing is carried out on the surface that can promptly switch to being wound around volume.Therefore, reel switch time, can not produce by the winding fault of carrying air and causing.

In the present invention, travel mechanism described in a pair preferably not make the dust of drive division fall to mode on described film, is arranged at the position, both ends of described air nozzle Width.Whereby, the dust that the drive division of travel mechanism produces not easily is attached on film.Especially when film is optical thin film, the foreign matter being attached to the dust of film etc. can have an impact to quality, and therefore, when integrally arranging air spray unit with capstan head, the dust importantly preventing the drive division of travel mechanism from producing is attached to and is wound around volume.So-called drive division, such as, refer to ball screw (ballscrew) or Linear guide (linearguide).

In the present invention, preferably the drive division of described travel mechanism is provided with outer cover (cover).Whereby, the dust that can positively prevent the drive division of travel mechanism from producing externally disperses.

In the present invention, the width of described film is preferably more than 2000mm.

If thin-film width is the large width of more than 2000mm, then when rolled carry air be involved in winding volume time, this carry air not easily from be wound around volume two ends discharge.Therefore, for the present invention, it is especially effective when the width of film is more than 2000mm.Moreover, even if when the width of film is below 2000mm, the deviation that reels also effectively can be prevented.

In order to realize described object, the feature of the manufacture method of the film of a mode of the present invention is to comprise: the masking step manufacturing film; And winding film step, utilize the film coiling device of described mode to reel to the described film manufactured.

Masking step such as can adopt solution film-forming method or melting masking method, described solution film-forming method is the method making coating (dope) curtain coating on supporter become film-form, described coating material resin is dissolved or dispersed in solvent form, described melting masking method is from mould (die) by molten resin, in the method be extruded in a thin film on cooling drums (coolingdrum), described molten resin utilizes extruder to form to make material resin melting.

According to the manufacture method of the film of described mode, the winding steps of the film utilizing described film coiling device to come to have manufactured, therefore, the winding fault of the distortion of the depressed deformation of winding deviation when can not produce winding, winding gauffer, scratch (comprising the small scratch of 50 μm ~ about 100 μm), film central portion and film end (being commonly referred to as ear) (knurling portion depression or stretch) etc.Whereby, the film of the high-quality of planar can be manufactured.

In order to realize described object, the feature of the manufacture method of the optical thin film of other modes of the present invention is at least to comprise: winding film step, utilizes the film coiling device of described mode to reel to the film manufacturing optical thin film; Application step, carries out inverse winding to the described film reeled, coated optical coating fluid; And drying steps, drying is carried out to the described coating layer be coated with.

According to the manufacture method of the film of described mode, utilize described film coiling device to carry out the winding steps of film, therefore, the winding fault of the distortion of the depressed deformation of winding deviation when can not produce winding, winding gauffer, scratch (comprising the small scratch of 50 μm ~ about 100 μm), film central portion and film end (being commonly referred to as ear) (knurling portion depression or stretch) etc.Whereby, in application step or drying steps, the coating fault or dry fault that are caused by winding fault can not be produced, therefore, the optical thin film of high-quality can be manufactured.

In described mode, preferably include product film winding steps, this product film winding steps utilizes the film coiling device of described mode to reel to the described optical thin film manufactured.

Even if when reeling to the optical thin film as product, as long as use film coiling device of the present invention, then the optical thin film of more high-quality can be manufactured.

In described mode, described optical thin film is preferably any one film in the protective film for polarizing plate of liquid crystal indicator, optical compensating film and anti-reflection film.Reason is: this kind of optical thin film needs the planar performance of high degree.

[effect of invention]

Membrane according to the invention wind2, even if when the mode that pushed by air is applied to the wind2 of capstan head mode, when capstan head rotates, also without the need to making air nozzle keep out of the way, and from winding, the pushing of line space gas can be involved in, till winding terminates to winding, therefore, whole spooling length can be made to guarantee high-quality.

Therefore, according to the manufacture method of the optical thin film of the described wind2 of use, the optical thin film of the planar performance needing height can be manufactured.

Accompanying drawing explanation

Fig. 1 is the concept map of masking manufacturing line film coiling device of the present invention being assembled to film.

Fig. 2 is the block diagram of the film coiling device of rotary type tower of the present invention.

Fig. 3 is the lateral plan of the film coiling device of rotary type tower of the present invention.

Fig. 4 A is the instruction diagram of the travel mechanism of the air nozzle movement of the film coiling device making rotary type tower of the present invention.

Fig. 4 B is the instruction diagram of the travel mechanism of the air nozzle movement of the film coiling device making rotary type tower of the present invention.

Fig. 5 A is the instruction diagram be described the effect of the film coiling device of rotary type tower of the present invention.

Fig. 5 B is the instruction diagram be described the effect of the film coiling device of rotary type tower of the present invention.

Fig. 5 C is the instruction diagram be described the effect of the film coiling device of rotary type tower of the present invention.

Fig. 6 is the lateral plan of other modes of the film coiling device of rotary type tower of the present invention.

Fig. 7 is the concept map of the manufacturing line film coiling device of rotary type tower of the present invention being assembled to optical compensating film.

Fig. 8 is the instruction diagram be described the example of the film coiling device of rotary type tower in the past.

[explanation of symbol]

1,34: be wound around volume

2,32: wireline reel

3,22: capstan head

3A: S. A.

4,36: air nozzle

5, S: swing-around trajectory

10: film coiling device

10A: winding drive control part

12: film

13: optical compensating film

14: masking manufacturing line

16: winding film shifter

16A: winding switches drive control part

18: controller

20: pallet

20A: base plate

20B: side plate

24: air spray unit

26: S. A./turning cylinder

28: arm plate

28A: extended plate

30: boss

31: core

32A: the first wireline reel/wireline reel

32B: the second wireline reel/wireline reel

36A: ejiction opening

38: air leading-in conduit road

38A: air obtains mouth

38B: flexible hose

38C: house steward

38D: swivel joint

40: travel mechanism

42: air line

44: motion of translation (LinearMotion, LM) track

46:LM block

48: slide block/nut member

50: ball screw

52: motor

54,116: guide reel

56: hold-down arm

112: send machine

114: film coupling device

117: upstream guide reel

118: friction treatment device

119: downstream guide reel

120: friction roller

122: dust removal machine

124: gravure coating apparatus

126: gravure roll

128: drip pan

129: blade

130: territory, initial dryer section

132: arid region

134: zone line

136: hardening region

138: winding tension controller

138A: dancer roll

L: distance

O: center

Detailed description of the invention

Below, in detail to film coiling device of the present invention and use the preferred implementation of the manufacture method of the optical thin film of this device to be described.

Fig. 1 is the concept map of the masking manufacturing line 14 film coiling device 10 of rotary type tower of the present invention being assembled to film 12.

As shown in Figure 1, the film 12 manufactured by masking manufacturing line 14 is wound in the film coiling device 10 of rotary type tower via winding film shifter 16.In the present embodiment, be described with the example of the film coiling device with the twin shaft rotary type tower of two wireline reels, but described wireline reel also can be more than two.Masking manufacturing line 14 such as can adopt solution film-forming method or melting masking method, described solution film-forming method is the method making coating curtain coating on supporter become film-form, described coating material resin is dissolved or dispersed in solvent form, described melting masking method is from mould by molten resin, in the method be extruded in a thin film on cooling drums, described molten resin utilizes extruder to form to make material resin melting.

In addition, winding film shifter 16 is following devices, that is, after a wireline reel in two axles is rolled up, capstan head rotates, and when the wireline reel of sky is positioned at winding position, the winding for film 12 is switched to empty wireline reel from the wireline reel be rolled up.The detailed description of winding film shifter 16 is not aim of the present invention, therefore omits, but such as preferably can use the winding film shifter that Japanese Patent Laid-Open 2008-230723 publication discloses.

The winding drive control part 10A of drived control is carried out to the winding of film coiling device 10 and the winding carrying out drived control is switched to the winding of winding film shifter 16 switches drive control part 16A and control according to the instruction carrying out self-controller (controller) 18.

As shown in FIG. 2 and 3, the film coiling device 10 of twin shaft rotary type tower comprises: capstan head 22, is rotatably arranged at pallet 20; And air spray unit 24, rotate together with capstan head 22.Moreover in Fig. 2 and Fig. 3, compared with the horizontality of Fig. 1, the posture of the capstan head 22 in winding film process tilts, but the posture of capstan head 22 there is no particular limitation.

Formed by base plate 20A and pair of side plates 20B, 20B, described pair of side plates 20B, 20B separate the width larger than the width of film 12 and configure opposite to each other pallet 20 to be sections be concave shape.In addition, S. A. (turning cylinder) 26 is rotatably supported in pair of bearings (not shown), and this pair of bearings (not shown) is arranged at the upper end of pair of side plates 20B, 20B.Capstan head 22 comprises in a pair arm plate 28,28 in opposite directions abreast, and the central part of a pair arm plate 28,28 is supported in S. A. 26.This S. A. 26 is linked to not shown source of rotational drive.Whereby, capstan head 22 rotates because S. A. 26 rotates.In the present embodiment, with the example of the capstan head of arm, capstan head 22 is described, but also can uses the discoideus capstan head comprising a pair parallel plectane.

Inside the both ends in a pair arm plate 28,28 in opposite directions abreast, boss (boss) 30,30 projection, the core 31 of hollow is chimeric is supported in described pair of projections 30,30.Form wireline reel 32 whereby, this wireline reel 32 wrapped around film 12.Moreover following wireline reel 32 is called the first wireline reel 32A, and this wireline reel 32 is in the winding position near winding film shifter 16 and reels.In addition, the wireline reel 32 of sky is called the second wireline reel 32B, the wireline reel 32 of this sky is in order to carry out winding next time and standby at the position of readiness place away from winding film shifter 16.

And winding drive control part 10A, based on the instruction carrying out self-controller 18, carries out drived control to the intermittent rotary of capstan head 22 (each rotate 180 degree) and the rotation of wireline reel 32A, 32B respectively.

In addition, be provided with near winding position winding diameter sensor (sensor) (not shown), the winding diameter of this winding diameter sensor (not shown) to the winding volume 34 being wound in the first wireline reel 32A is measured, and detection signal is sent to controller 18.This controller 18, according to the detection signal of winding diameter sensor, carries out computing to being wound around the winding diameter of volume 34 at any time, and if winding diameter be rolled up, then export winding switching command to film coiling device 10 and winding film shifter 16.

The air spray unit 24 integrally arranged with capstan head 22 carries out air pushing to the surface being wound around volume 34, thus prevent the air that carries entrained by film 12 be wound to be involved in winding volume 34, for each first wireline reel 32A and the second wireline reel 32B, air spray unit 24 is set.That is, air spray unit 24 comprises: air nozzle 36, air is injected into the surface being wound around volume 34, carries out air pushing to the surface of this winding volume 34; Air leading-in conduit road 38, hollow ground forms S. A. 26, and air is directed into air nozzle 36 via this S. A. 26; And travel mechanism 40, follow the change of the winding diameter being wound around volume 34 and air nozzle 36 is moved.Described air spray unit 24 is the modes rotated together with the rotation along with capstan head 22, integrally arranges with capstan head 22.The air spray unit 24 formed in this way is preferably arranged in the swing-around trajectory S of capstan head 22.The swing-around trajectory S of so-called capstan head 22, as shown in Figure 3, refer to the track (long and two-short dash line) that the outer most edge of following winding volume 34 is described, the distance that described winding volume 34 and the center O of the S. A. 26 of capstan head 22 are separated by is the longest.

Air nozzle 36 comprises the ejiction opening 36A of slit (slit) shape, and the ejiction opening 36A of this slit-shaped is formed as the width equal with the width of film 12.The air that air leading-in conduit road 38 supplies sprays from ejiction opening 36A to the surface being wound around volume 34.

Air leading-in conduit road 38 comprises: many flexible hose 38B, and multiple air that its one end is connected to the Width along air nozzle 36 and is formed obtain mouth 38A; House steward 38C, is connected to the other end of many flexible hose 38B; And the S. A. 26 of hollow, be communicated with house steward 38C.And the air line 42 till the air generating device (not shown) of air is connected to swivel joint 38D, and this swivel joint 38D is arranged at S. A. 26.Whereby, even if air spray unit 24 rotates together along with the rotation of capstan head 22, also air leading-in conduit road 38 distortion can not be caused.

Many flexible hose 38B and house steward 38C are set for each air nozzle 36, and are provided with open and close valve (valve) (not shown) in each house steward 38C.Each open and close valve carries out on-off action according to the instruction carrying out self-controller 18.That is, open and close valve air being delivered to the house steward 38C of the air nozzle 36 in winding film process is opened, and the open and close valve of another house steward 38C is closed.

Whereby, the house steward 38C opened by the S. A. 26 of air line 42, swivel joint 38D, hollow, open and close valve from the air of air generating device and many flexible hose 38B and be supplied to air nozzle 36.The surface of air to winding volume 34 pressure carried out when air pushes from air nozzle 36 is utilized preferably to be in the scope of 5kPa ~ 30kPa.If insufficient pressure 5kPa when carrying out air pushing, then little by carrying the effect that air got rid of, and the reason of the fault that reels can be become.On the other hand, if pressure when carrying out air pushing is more than 30kPa, then the pressure of air pushing is excessively strong, can reel really up to the mark, therefore, likely can cause the winding fault of black-tape etc.

Distance between air nozzle 36 and the surface being wound around volume 34 is maintained predetermined distance by travel mechanism 40 one side, and simultaneously make air nozzle 36 carry out advance and retreat relative to the surface of winding volume 34 and move, described travel mechanism 40 is formed in such a way.That is, at a pair arm plate 28,28 place in opposite directions, have extended plate 28A, 28A from the both ends of this pair arm plate 28,28 are extended in the opposite directions to each other, arm plate 28 is formed as N word shape.And, in the inner side of extended plate 28A, 28A in opposite directions, along the direction orthogonal with the axle core of the first wireline reel 32A or the second wireline reel 32B, respectively in the track (rail) 44 being equipped with two Linear guides abreast.In addition, the track 44 that is supported in opposite directions via block (block) 46 and slide block (slideblock) (nut (nut) component) 48 of the both ends of air nozzle 36.In addition, ball screw 50 is screwed together in slide block 48, and one end of ball screw 50 is linked to the turning cylinder of motor (motor) 52, and this motor (motor) 52 is supported in extended plate 28A.

And controller 18 controls based on the rotating speed of winding diameter to motor 52 being wound around volume 34, the winding diameter of described winding volume 34 is the winding diameters calculated according to the detection signal from winding diameter sensor.Whereby, as shown in Fig. 4 A, Fig. 4 B, one side the ejiction opening 36A of air nozzle 36 and the distance L on the surface being wound around volume 34 can be maintained predetermined distance, one side follows the change of the winding diameter being wound around volume 34 and air nozzle 36 is moved.Fig. 4 A is the state that winding diameter is thin, and Fig. 4 B is the state that winding diameter is thick.

Ejiction opening 36A and the distance L on the surface being wound around volume 34 of air nozzle 36 are preferably in the scope of 2mm ~ 15mm.When distance L is less than 2mm, ejiction opening 36A likely can come in contact with the surface being wound around volume 34.On the other hand, when distance L is more than 15mm, pressure when air pushes is carried out to the surface being wound around volume 34, cannot be got rid of carrying air fully.In addition, preferably dustproof encloser (not shown) is arranged at Linear guide (track 44 and block 46) and ball screw 50, can not disperses to make the dust of generation.

In addition, as shown in Figure 3, preferably comprise guide reel 54 at capstan head 22, the progress path of this guide reel 54 pairs of films 12 limits, make when described capstan head 22 rotates, be about to be wound in the film 12 being wound around volume 34 to come in contact with air spray unit 24, especially can not come in contact with the flexible hose 38B on air leading-in conduit road 38 or travel mechanism 40.That is, as shown in Figure 3, from extended plate 28A to the outside of flexible hose 38B, in bending, ground is extended hold-down arm 56.Guide reel 54 is supported in leading section and the central portion of described hold-down arm 56 freely rotationally respectively.Whereby, form following formation, namely, be provided with guide reel 54, and in the progress path of film 12 being wrapped in described guide reel 54, be configured with air spray unit 24, described guide reel 54, when capstan head 22 rotates, rotates together with capstan head 22, and wrapped up by being wound in the film 12 being wound around volume 34.

Moreover the quantity of guide reel 54 is not limited to two.In addition, in figure 3, guide reel 54 is supported in from the extended hold-down arm 56 of extended plate 28A, but described discoideus capstan head also can be adopted to form the support section of guide reel 54.In a word, as long as make the formation that guide reel 54 also rotates together along with the rotation of capstan head 22.Whereby, when capstan head 22 rotates, can not make to be about to be wound in the film 12 being wound around volume 34 and come in contact with air spray unit 24, therefore, the face of film 12 can not be impaired because of contact.

Then, the effect of the film coiling device 10 formed in this way is described.

As shown in Figure 5A, at winding position, film 12 is wound in the first wireline reel 32A, and the surface being wound around volume 34 is subject to air pushing because of the air sprayed from air nozzle 36.Whereby, the air that carries entrained in the advance process of film 12 is prevented to be involved in winding volume 34 and to produce described winding fault.

Then, according to the detection signal from not shown winding diameter sensor, after the winding diameter that controller 18 detects the film 12 of winding has been rolled up, controller 18 winding switching command is sent to film coiling device 10 winding drive control part 10A, switch drive control part 16A with the winding of winding film shifter 16.Such as, when the film 12 of 4000m is wound in the first wireline reel 32A, controller 18 utilizes winding diameter when having reeled 3800m to judge and is rolled up, and sends winding switching command.

As shown in Figure 5 C, winding drive control part 10A makes capstan head 22 revolve turnback based on winding switching command, makes the second wireline reel 32B being positioned at position of readiness move to winding position.On the other hand, the winding volume 34 be rolled up moves to position of readiness, till the winding finishing switching of being undertaken by winding film shifter 16 pairs of films 12 (till winding 4000m), just continues to reel to film 12.

In the described rotary course in order to realize the capstan head 22 that winding film switches, because the air spray unit 24 comprising air nozzle 36 integrally arranges with capstan head 22, therefore, this air spray unit 24 can rotate together along with the rotation of capstan head 22.Whereby, even if when the mode that pushed by air is applied to the film coiling device 10 of capstan head mode, also without the need to when capstan head rotates, air nozzle 36 is retreated to outside swing-around trajectory S.Therefore, can from by winding film in the first wireline reel 32A to winding terminates, carry out air pushing to being wound around the surface of volume 34 constantly.Especially, even if to start to terminating during (during from 3800m to 4000m) switching from the winding of the rotation utilizing capstan head, the air from air nozzle 36 is still utilized to carry out air pushing to the surface being wound around volume 34, therefore, can not as the wind2 of rotary type tower in the past, (that is, at the peripheral part of take up roll) generation winding fault after winding switching starts.

And in embodiments of the present invention, owing to being provided with the guide reel 54 rotated together with capstan head 22, therefore, being about to be wound in the film 12 being wound around volume 34 can not come in contact with air spray unit 24 and produce the fault of scratch etc.

Fig. 5 A to Fig. 5 C is utilized to be described described situation.If from the state of Fig. 5 A, capstan head 22 90-degree rotation, then can become the state of Fig. 5 B.According to Fig. 5 B: before flexible hose 38B or travel mechanism 40 come in contact with the film 12 being about to reel, guide reel 54 is wrapped up by film 12 and carries out driven rotation.And, as shown in Figure 5 C, if capstan head 22 revolves turnback, then in the mode making film 12 advance in the outside of flexible hose 38B or travel mechanism 40 to form progress path.Whereby, when capstan head 22 rotates, can prevent being about to be wound in the film 12 being wound around volume 34 and come in contact with air spray unit 24.

On the other hand, rotate at capstan head 22 and make after the second wireline reel 32B moves to winding position, winding switches drive control part 16A to be cut off the film 12 being wound in the first wireline reel 32A, and the leading section of the film 12 cut off is adhered to the second wireline reel 32B.While carrying out adhering, by winding drive control part 10A, the second wireline reel 32B is rotated, start described film 12 to be wound in the second wireline reel 32B.Whereby, the film 12 of advance switches to the second wireline reel 32B from the first wireline reel 32A winding, thus reels to film 12 continuously.

Roughly while described winding finishing switching, the open and close valve of the house steward 38C of the first wireline reel 32A side is closed by controller 18, and is opened by the house steward 38C of the second wireline reel 32B side.Whereby, air is injected into the surface of the winding volume 34 being wound in the second wireline reel 32B from air nozzle 36, thus the air that carries entrained by film 12 is got rid of.

The switching time of open and close valve is more early better, if preferably described switching time within 3 seconds that count from winding finishing switching, then can prevent the fault that reels, and no problem.

So, film coiling device 10 according to the present embodiment, even if when the mode that pushed by air is applied to the wind2 of capstan head mode, when capstan head rotates, also without the need to making air nozzle 36 keep out of the way, and can from winding, air pushing is carried out to winding volume 34, till winding terminates, therefore, can be got rid of carrying air efficiently.Whereby, the fault that reels can positively be prevented.

In the described film coiling device 10 illustrated, be configured with air spray unit 24 in such a way, described mode refers to the winding volume 34 be up injected into by air in winding process, thus carries out air pushing to this winding volume 34.But, also as shown in Figure 6, laterally air is injected into the mode of winding volume 34 to configure air spray unit 24, although not shown, but also can down eject described air.So, laterally or be down injected into by air and be wound around volume, whereby, the dust produced during winding not easily flies upward, and therefore, dust can be suppressed again to be attached to and be wound around volume surface.

The example of such as, winding time to be directly illustrated the example that the film manufactured reels by described film coiling device 10, to manufacture the protective film etc. of Polarizer is illustrated.Then, be described an example of following manufacture method according to Fig. 7, described manufacture method further the film 12 being wound in film coiling device 10 is in this way implemented to the process of coating, drying etc., thus manufacture the method for optical thin film.As an example of optical thin film, be described with the example of optical compensating film.

Moreover certainly, film coiling device of the present invention is effective for winding when the described film illustrated itself being used as the protective film of Polarizer, and in addition, the winding for the optical thin film functional coating fluid being applied in described film is also effective.

Herein, as the example of optical thin film being coated with functional coating fluid, the situation of optical compensating film is described, but optical thin film is not limited to optical compensating film, also the manufacture method of various optical thin film such as anti-dazzle film, anti-reflection film etc. is applicable to, described various optical thin film is by after on hardening coating solution to banded film, in arid region (zone), by adding hot blast to make coating layer dry, in hardening region, then making the coating layer of drying harden form.

Fig. 7 is the skeleton diagram that the entirety of the manufacturing installation 100 representing optical compensating film is formed.

As shown in Figure 7, banded film 12 is sent by the machine of sending 112 from rotary type tower, and the film 12 of this band shape is pre-formed with the transparent resin layer of alignment film formation.Moreover symbol 114 is film coupling device, this film coupling device is automatically by the rearward end of the film 12 of old volume, engaged with the leading section of the film 12 newly rolled up.

Guide from sending the directed roller 116 of film 12 one side that machine 112 sends via film coupling device 114, one side is fed through friction (rabbing) processing equipment 118 being configured at downstream, carries out friction treatment by friction roller (rubbingroller) 120 to transparent resin layer.Whereby, alignment film is formed.

In friction treatment device 118, friction roller 120 is configured between two conveyance volumes in the continuous conveyance step of film 12.And film 12 is wrapped in the friction roller 120 of rotation and is transported, and whereby, is subject to friction treatment continuously.In the case, also can configure friction roller 120 in such a way, that is, make the turning cylinder of this friction roller 120 tilt relative to the conveyance direction of film 12.

Be configured with dust removal machine 122 in the downstream of friction treatment device 118, the dust in the face being attached to film 12 is removed.And, be configured with intaglio plate (gravure) apparatus for coating 124 in the downstream of dust removal machine 122, by the alignment film of the coating solution to film 12 that comprise liquid crystal compounds.Preferred use has the liquid crystal liquid crystal property discotic compound (discoticcompound) of bridging property functional group as liquid crystal compounds.

Gravure coating apparatus 124 comprises gravure roll (gravureroller) 126 and drip pan (pan) 128, and this drip pan 128 is configured in the below of described gravure roll 126, and comprises the coating fluid of liquid crystal compounds abrim.About the latter half of gravure roll 126 impregnated in coating fluid.In addition, blade (blade) 129 is configured with in the position at about 10 o'clock of gravure roll 126.Whereby, coating fluid is supplied to born of the same parents' shape portion (cell) in the face of gravure roll 126, and utilize after unnecessary coating fluid scrapes by blade 129, described coating fluid is coated to the orientation face of film 12.The coating weight of coating fluid is preferably 10mL/m ²below.

To be roughly parallel state with gravure roll 126, be configured with upstream guide reel 117 and downstream guide reel 119.In addition, for upstream guide reel 117 and downstream guide reel 119, preferred both ends are rotatably supported by not shown bearing components (ball bearing of main shaft etc.), and do not comprise driver train.Gravure coating apparatus 124 is preferably arranged in the environment of the cleaning of dust free room (cleanroom) etc.Cleanliness is preferably less than 1000 grades, is more preferably less than 100 grades, and then is preferably less than 10 grades.

As apparatus for coating, illustrate the example of gravure coating apparatus 124 in the figure 7, but be not limited thereto.Such as suitably can use the method for Dipcoat method (dipcoatingmethod), air knife coating method (airknifecoatingmethod), curtain formula rubbing method (curtaincoatingmethod), print roll coating method (rollercoatingmethod), wire bar rubbing method (wirebarcoatingmethod), nick version (microgravure) method or extrusion coating methods (extrusioncoatingmethod) etc.The conveyance speed of film 12 is preferably 5m/ minute ~ 200m/ minute.In addition, the width of coating layer film 12 formed is preferably 0.5m ~ 3m.

Carry out drying by the territory, initial dryer section 130 being arranged at nearest downstream to film 12, this film 12 is formed with the coating layer comprising liquid crystal compounds.In addition, the downstream in territory, initial dryer section 130 is provided with arid region 132, the coating layer of the film 12 of drying is dried further.And, the downstream of arid region 132 is provided with hardening region 136, the coating layer of the film 12 of drying is hardened.

In said case, be preferably arranged between arid region 132 and hardening region 136 by zone line 134, to be temperature be controlled lower than the mode of the temperature of arid region 132 and the temperature of hardening region 136 described zone line 134.If do not arrange zone line 134, coating layer is directly transported to hardening region 136 from arid region 132, then low molecular weight compound can condensation in the hardening region 136 that temperature is lower than the temperature of arid region 132 sometimes, described low molecular weight compound be from arid region 132 by compound that the film 12 that heats and coating layer evaporate.The precipitate (condensation product) of separating out because of condensation can be attached to the back side and the coating aspect of film 12, thus pollutes.In addition, the condensation product of condensation because of the wall etc. of hardening region 136, can fall and be attached to the back side and the coating face of band-like film 12, thus polluting.Moreover herein, so-called low molecular weight compound, refers to that mol wt is the compound of less than 1000.

In the manufacturing process of optical compensating film, as described low molecular weight compound, such as there is triphenyl phosphate (TriphenylPhosphate, TPP), the biphenyl diphenyl phosphate (BiphenylDiphenylPhosphate, BDP) as plasticiser; As the IRGACURE (the Japan registration trade mark of Chang Lai industry Company Limited by Shares (NAGASE & Co., Ltd.)) 184 of hard coat agent; And as the acryloxypropyl trimethoxy silane etc. of silane coupling agent (silanecouplingagent).

And the optical compensating film 13 manufactured via hardening region 136, through winding tension controller 138, is then wound in the film coiling device 10 of rotary type tower via the described winding film shifter 16 that illustrated.Moreover symbol 138A is dancer roll (dancerroller).

So, use the film coiling device 10 of rotary type tower of the present invention, film 12 is reeled, and optical compensating film 13 is reeled, this optical compensating film 13 is coated with film 12, dry etc. process and the film that manufactures, whereby, following optical thin film can be manufactured, this optical thin film is without winding deviation during winding, winding gauffer, scratch (comprising the small scratch of 50 μm ~ about 100 μm), the depressed deformation of film central portion, the winding fault of the distortion of film end (being commonly referred to as ear) (knurling portion depression or stretch) etc. and there is the planar performance of height.

Then, the various materials used in the manufacturing process to the optical thin film of present embodiment are described.

As the discotic compound used in present embodiment (liquid crystal compounds), the compound that each publication of No. 7-267902, Japanese Patent Laid-Open, No. 7-281028, Japanese Patent Laid-Open and No. 7-306317, Japanese Patent Laid-Open discloses can be used.According to described publication, optical anisotropic layer (comprising the coating layer of liquid crystal compounds) is the layer formed by the compound with disc configuration unit.That is, optical anisotropic layer is the low-molecular-weight liquid crystal liquid crystal property discotic compound nitride layer of monomer (monomer) etc. or poly-mer (polymer) layer of the acquisition by the polymerization (sclerosis) of the liquid crystal liquid crystal property discotic compound of polymerizability.

As plate-like (discoid) compound, include, for example: the benzene derivative that the research report of the people such as the C.Destrade of " molecular crystal " (Mol.Cryst.) the 71st volume the 111st page (1981) discloses; " molecular crystal " (Mol.Cryst.) the 122nd volume the 141st page (1985), " Physics Letters A " (Physicslett, A) the 78th three polyindenes (truxene) derivant of disclosing of the research report of the people such as C.Destrade of volume the 82nd page (1990); The cyclohexane derivant that the research report of the people such as the B.Kohne of " applied chemistry " (Angew.Chem.) the 96th volume the 70th page (1984) discloses; And the Azacrown ether containing (azacrown) that discloses of the research report of the people such as the research report of people, the J.Zhang of " JACS " (J.Am.Chem.Soc.) the 116th volume the 2655th page (1994) such as the J.M.Lehn of " chemistry can will " (J.Chem.Commun.) the 1794th page (1985) is or phenylacetylene system large ring (macrocycle) compound etc.

Described plate-like (discoid) compound is following structure, namely, general using the parent nucleus of described compound as molecular center, and ground is replaced the alkyl of straight chain or alkoxy, displacement benzoxy etc. and as its straight chain, described plate-like (discoid) compounds exhibit goes out liquid crystal liquid crystal property in aplysia punctata.In described plate-like (discoid) compound, generally comprise the compound being called as discotic mesogenic.But, as long as molecule self has negative uniaxiality, and fixing orientation can be formed, then plate-like (discoid) compound disclosed described in being not limited to.In addition, in described publication, what is called is formed by discoid compound, and the final material formed is without the need to being described compound, such as also comprise following situation, that is, described low molecule discotic mesogenic has the base reacted because of heat, light etc., result, because of heat, light etc., undertaken by reaction being polymerized or being cross-linked, mol wt uprises, and liquid crystal liquid crystal property disappears.And preferably use following compound, this compound contains the discoid compound of at least one of the columnar phase that can form discotic nematic or uniaxiality, and has optical anisotropy.In addition, discoid compound is preferably triphenylene derivant.Herein, triphenylene derivant is preferably the compound represented by (changing 2) that Japanese Patent Laid-Open 7-306317 publication discloses.

As the film 12 of supporter becoming orientation rete, preferably use acylated cellulose (celluloseacylate) film of TAC etc.Specifically, the film that Japanese Patent Laid-Open 9-152509 publication can be used to disclose in detail.That is, alignment film is arranged on acylated cellulose film, or is arranged on priming coat that this acylated cellulose film is coated with.Alignment film is in the mode specified the alignment direction of liquid crystal liquid crystal property discotic compound to play function, and described liquid crystal liquid crystal property discotic compound is arranged on this alignment film.Herein, as long as regiospecific can be given optical anisotropic layer by alignment film, then can be arbitrary layer.

As the preferred example of alignment film, can enumerate: the layer through friction treatment of organic compound (be preferably poly-mer), oblique side's evaporation layer of mineral compound and there is the layer of microgroove (microgroove), and can enumerate: the stack membrane formed by Langmuir Bu Luojietafa (LangmuirBlodgettmethod) (LB film) of ω-tricosanic acid, two octadecyl methyl ammonium chloride and methyl stearate etc. or by applying electric field or magnetic field to make the layer of dielectric substance orientation.

As the organic compound of alignment film, include, for example: polymethyl methacrylate, acrylic acid/methacrylic acid copolymer, styrene/maleimide copolymer, polyvinyl alcohol, poly-(N hydroxymethyl acrylamide), styrene/methylstyrene copolymer, chlorosulphonated polyethylene, nitrocellulose, polyvinylchloride, chloridized polyolefin, polyester, polyimide, vinyl acetate/vinyl chloride copolymer, ethylene/vinyl acetate, carboxymethyl cellulose, polyethylene, the compound of the poly-mer of polypropylene and polycarbonate etc. and silane coupling agent etc.As the example of preferred poly-mer, can enumerate: the poly-mer of polyimide, polystyrene, styrene derivative, gelatin, polyvinyl alcohol and there is the alkane modified polyvinylalcohol of alkyl (carbon number is preferably more than 6).

In described poly-mer, especially preferably alkane modified polyvinylalcohol, this alkane modified polyvinylalcohol make the ability of liquid crystal liquid crystal property discotic compound orientation equably excellent.Infer that reason is: the strong interaction between the alkyl chain of orientation face and the alkyl side chain of discotic mesogenic.In addition, for alkyl, carbon number is preferably 6 ~ 14, and alkyl is preferably via-S-,-(CH ₃) C (CN)-or-(C ₂h ₅) N-CS-S-and be binding on polyvinyl alcohol.Described alkane modified polyvinylalcohol preferably has alkyl at end, and saponification degree is more than 80%, and the polymeric level is more than 200.In addition, the commodity of the described polyvinyl alcohol on side chain with alkyl MP103, MP203 and R1130 (trade name) etc. that Kuraray (stock) (KURARAYCo., Ltd.) can be utilized to manufacture.

In addition, as liquid crystal indicator (LiquidCrystalDisplay, LCD) alignment film and the polyimide film polyimide of fluorine atom (be preferably containing) that is widely used is also preferred as organic alignment film.By polyamic acid, (such as Hitachi changes into (stock) (HitachiChemicalCo., Ltd.) the LQ/LX series (trade name) manufactured, Nissan Chemical (stock) (NissanChemicalIndustries, Ltd.) the SE series (trade name) etc. manufactured) coat netted, after calcining 0.5 hour ~ 1 hour with 100 DEG C ~ 300 DEG C, rub, obtain described polyimide film whereby.

And; the alignment film being applicable to acylated cellulose film is preferably following cured film, reactive base is directed into described poly-mer, or uses described poly-mer together with the crosslinking agent of isocyanate compound and epoxy compound etc.; make these polymer hardens, obtain described cured film whereby.

The poly-mer used in alignment film, with the liquid crystal compounds of the optical anisotropic layer preferably chemical bonded refractory across the interface of respective layer.The poly-mer of alignment film is preferably formed by following polyvinyl alcohol, and this polyvinyl alcohol utilizes the base comprising vinyl segment, epoxyethane base section or '-aziridino part, at least one hydroxyl given displacement and forms.Comprise the base of vinyl segment, epoxyethane base section or '-aziridino part, be preferably binding on the polymer chain of polyvinyl alcohol derivative via aryl oxide key, amino-formate bond, acetal bonds or ester bond.The base comprising vinyl segment, epoxyethane base section or '-aziridino part does not preferably have aromatic rings.Described polyvinyl alcohol is preferably (the changing 22) that Japanese Patent Laid-Open 9-152509 publication discloses.

The processing method that described friction treatment can utilize the LCD alignment treatment step as LCD and be widely adopted.That is, can use following method, the method makes paper using or gauze (gauze), felt (felt), rubber or nylon, poly-ester fibres etc., carries out wiping, obtain orientation whereby towards the face of fixed-direction to alignment film.Generally speaking, the cloth etc. using cloth to be fifty-fifty implanted with length and the homogeneous fiber of fineness degree carries out the friction of left and right for several times, implements described friction treatment whereby.

In addition, as the evaporation material of inorganic oblique side's vapor-deposited film, with monox (SiO) for representative, titanium dioxide (TiO can be enumerated ₂), zinc oxide (ZnO ₂) etc. metallic oxide or magnesium flouride (MgF ₂) etc. the metal of fluoride, gold (Au), aluminium (Al) etc.Moreover, as long as metallic oxide is the metallic oxide of high-k, then can be used as oblique side's evaporation material.Moreover the kind of described evaporation material is not limited to described kind.Evaporation coating device can be used to form inorganic oblique side's vapor-deposited film.Netted face fixed and is carried out evaporation, or make rectangular netted movement and carry out evaporation continuously, whereby, inorganic oblique side's vapor-deposited film can be formed.Make the method for optical anisotropic layer orientation as not using alignment film, the method that can be listed below, that is, the optical anisotropic layer on netted is heated to the temperature that can form discotic liquid crystal layer by one side, and one side applies electric field or magnetic field.

As application process optical compensating film being applied to liquid crystal indicator; preferably via sticker, described optical compensating film is fitted in the one-sided of Polarizer; or via lining cement; described optical compensating film is fitted in the one-sided of polarization element as protective film, and described optical compensating film is formed with optical anisotropic layer on acylated cellulose film.Optical anisotropic device preferably at least has disc configuration unit (being preferably discotic mesogenic).

In addition, the disc face of preferred described disc configuration unit tilts relative to acylated cellulose film face, and the disc face of disc configuration unit and acylated cellulose film angulation can change on the depth direction of optical anisotropic layer.

In addition, described optical compensating film is especially preferably used in transmissive liquid crystal display device.This transmissive liquid crystal display device comprises liquid crystal cells (liquidcrystalcell) and is configured in two pieces of Polarizers of both sides of this liquid crystal cells.Liquid crystal cells carries liquid crystal between two cube electrode substrates.One piece of optical compensating film is configured between liquid crystal cells and a Polarizer, or two pieces of optical compensating films are configured between liquid crystal cells and two pieces of Polarizers.The pattern (mode) of liquid crystal cells is preferably vertical arrangement (VerticalAlignment, VA) pattern, twisted-nematic (TwistedNematic, TN) pattern or optical compensation curved (OpticallyCompensatedBend, OCB) pattern.

[example 1]

By the film coiling device of rotary type tower, the width manufactured in the masking manufacturing line of Fig. 1 of 4000m is 2000mm and the triacetylcellulose film that thickness is 80 μm is wound in wireline reel, and when reeled 3800m time, capstan head is rotated, thus carry out film winding switch.

Then, when under the winding condition in following experiment 1 ~ experiment 3, when film is reeled, the quality of coiled film is investigated.

(winding condition)

Experiment 1 adopts film coiling device in the past, and before capstan head rotates and after rotating, all reel with the winding tension of 550 (N), described film coiling device does not in the past carry out air pushing, but winding film tension force is improved, whereby the air that carries be involved in being wound around volume is got rid of.

Experiment 2 adopts film coiling device in the past, described film coiling device in the past pushes by air the film coiling device that will carry the mode that air is got rid of, but because air nozzle does not become to be integrated with capstan head, therefore, when capstan head rotates, air nozzle must be made to retreat to outside swing-around trajectory.Therefore, after described capstan head rotates, winding tension is improved, thus air will be carried got rid of.That is, the winding tension before capstan head rotation is set to 400 (N), and the winding tension after making rotation is increased to 550 (N).In addition, the air bias pressure before capstan head rotates is 8.0 (kPa), but after rotation, in order to make air nozzle keep out of the way, described air bias pressure is 0.0 (kPa).

Experiment 3 adopts film coiling device of the present invention, described film coiling device of the present invention pushes by air the film coiling device that will carry the mode that air is got rid of, air spray unit and capstan head are integrally arranged, whereby, before capstan head rotates and after rotating, all air pushing can be carried out.That is, before capstan head rotates and after rotating, all winding tension is set to 400 (N), and air bias pressure is set to 8.0 (kPa).

(method for evaluating quality of coiled film)

For each film of reeling under the winding condition of described experiment 1, experiment 2 and experiment 3, winding quality is evaluated.As the method that winding is evaluated, with visual, whole " winding deviation ", " black-tape " these two projects being wound around volume are evaluated.In addition, respectively for until capstan head rotate before till winding (spooling length till 3800m winding volume.Below be labeled as inner circumferential side) with rotate after (spooling length is till 3800m ~ 4000m.Below be labeled as outer circumferential side) winding, utilize and visual " turtle shell shape depression ", " volume angle " and " ear's depression " these three projects to be evaluated.

(metewand of assessment item)

< reel deviation > with zero, △ and × these three ranks (level) evaluate the regularity of end face (side) or randomness that are wound around volume.

Zero is wound around the departure (difference of maximum protuberance and maximum recess) of volume end face less than 3mm, and winding attitude is attractive in appearance.

The departure (difference of maximum protuberance and maximum recess) that △ is wound around volume end face is 3mm ~ 10mm, can see winding deviation.

× being wound around the departure (difference of maximum protuberance and maximum recess) of volume end face more than 10mm, winding attitude is poor.

< black-tape >, also referred to as caking (blocking), refers to following winding fault, that is, be wound around the thin layer adherence each other in volume, result, film has been adjacent to and has occurred the penetrating part of outward appearance each other.When the stress in winding radius direction is excessive, described winding fault can be deteriorated, and due to completely without the air be involved in being wound around volume, therefore, when reeling really up to the mark, can produce described winding fault.Also with zero, △ and × these three ranks evaluate black-tape fault.

Zero does not produce black-tape on the surface completely at winding volume.

The part that △ is being wound around volume surface creates black-tape.

× create black-tape in the roughly whole region being wound around volume surface.

< turtle shell shape depression > is following winding fault, namely, be wound around the surperficial depressed deformation (sink, be recessed into distortion) creating similar turtle shell decorative pattern of volume, owing to being involved in being wound around carrying air and discharging along with the process of time of volume, therefore, be wound around volume surface to subside, whereby, produce described winding fault.Also with zero, △ and × these three ranks evaluate turtle shell shape depression fault.

Zero does not produce turtle shell shape depression on the surface completely at winding volume.

△ creates faint turtle shell shape depression in the part being wound around volume surface.

× be wound around volume surface on a large scale in create strong turtle shell shape depression.

< rolls up angle > and refers to following winding fault, that is, the diametric(al) section being wound around volume is not circle attractive in appearance, and is found everywhere the deformation place at angle, and with zero, △ and × these three ranks evaluate.

The zero diametric(al) section being wound around volume is circle attractive in appearance, and does not produce volume angle.

△ creates faint volume angle in a part for the diametric(al) section being wound around volume.

× be wound around volume diametric(al) section on a large scale in create strong volume angle.

> stretches also referred to as " ear's depression " in < ear, refers to following winding fault, that is, become the state of fluctuating near the knurling portion at both ends, thin-film width direction.If winding tension is too high, then easily produce described winding fault, with zero, △ and × these three ranks evaluate.

Zero does not produce ear at the both ends being wound around volume surface stretches.

△ creates faint ear at the both ends being wound around volume surface and stretches.

× creating strong ear at the both ends being wound around volume surface stretches.

(test result)

As a result, as shown in table 1, for the experiment 1 of the film coiling device used in the past, " the winding deviation " and " black-tape " that be wound around volume is zero evaluation.But " the turtle shell shape depression ", " volume angle ", " ear's stretching, extension " that be wound around the inner circumferential side of volume is △ and evaluates, and outer circumferential side is × evaluates.

In addition, for the experiment 2 of the film coiling device of the air thrust used in the past, be wound around " the winding deviation " of volume for △ evaluation, " black-tape " is zero evaluation.In addition, " the turtle shell shape depression ", " volume angle ", " ear's stretching, extension " that be wound around the inner circumferential side of volume is zero evaluation.But, for the outer circumferential side that the winding through following process is rolled up, " turtle shell shape depression ", " volume angle " be × evaluate, " ear's stretching, extension " is that △ evaluates, described process refers to not to be carried out air pushing and winding tension is improved, and will carry air whereby and be got rid of.

In contrast, for the experiment 3 of the film coiling device of use air thrust of the present invention, what be wound around " the winding deviation " and " black-tape " of volume is evaluated as zero.And for the inner circumferential side being wound around volume and outer circumferential side, " turtle shell shape depression ", " volume angle ", " ear's stretching, extension " are zero evaluation.

Table one

。

Claims (14)

1. an optical thin film wind2, the optical thin film of more than 3800m is wound in wireline reel and forms winding volume, the capstan head being provided with multiple described wireline reel is rotated centered by S. A., make described winding roll up whereby to move from winding position, make the wireline reel next carrying out reeling move to described winding position, described optical thin film wind2 comprises:

Air spray unit, described air spray unit comprises:

Air nozzle, is that the air of 5kPa ~ 30kPa is injected into the described surface being wound around volume by pressure, by the described air ejected, the described optical thin film reeled is urged to described surface;

Air leading-in conduit road, via the described S. A. that formed of hollow ground, is directed into described air nozzle by described air; And

Travel mechanism, the ejiction opening of described air nozzle and described winding are rolled up the scope that surperficial distance is maintained at regulation by one side, and one side follows the change of the winding diameter of described winding volume and described air nozzle is moved,

For each described wireline reel, described air spray unit and described capstan head are integrally arranged, and described air spray unit rotates together along with the rotation of described capstan head.

2. optical thin film wind2 according to claim 1, wherein said air spray unit is configured in the swing-around trajectory of described capstan head.

3. optical thin film wind2 according to claim 1 and 2, more comprise swivel joint, it is arranged at described S. A., and the air line till the air-source set by the outside until described capstan head and described S. A. are rotatably linked by described swivel joint.

4. optical thin film wind2 according to claim 1 and 2, is wherein provided with guide reel, and described guide reel, when described capstan head rotates, rotates together with described capstan head, and wrapped up by being wound in the described optical thin film being wound around volume, and

In the progress path of optical thin film being wrapped in described guide reel, be configured with described air spray unit.

5. optical thin film wind2 according to claim 1 and 2, the ejiction opening of described air nozzle and the described distance of rolling up surface that is wound around are maintained 2mm ~ 15mm by wherein said travel mechanism one side, and one side makes described air nozzle move.

6. optical thin film wind2 according to claim 1 and 2, wherein said air leading-in conduit road, from described S. A., branches to the house steward arranged for each described air nozzle, and

From described house steward via many flexible hoses, along described air nozzle Width and equably described air is imported.

7. optical thin film wind2 according to claim 6, more comprises switching mechanism, and it is arranged at described each house steward, and described switching mechanism within 3 seconds, can switch the air flowing to each described air nozzle from described S. A..

8. optical thin film wind2 according to claim 1 and 2, wherein travel mechanism described in a pair does not make the dust of drive division fall to mode on described optical thin film, is arranged at the position, both ends of described air nozzle Width.

9. optical thin film wind2 according to claim 1 and 2, is wherein provided with outer cover at the drive division of described travel mechanism.

10. optical thin film wind2 according to claim 1 and 2, the width of wherein said optical thin film is more than 2000mm.

The manufacture method of 11. 1 kinds of optical thin films, comprising:

Manufacture the masking step of optical thin film; And

Winding film step, utilizes optical thin film wind2 according to claim 1 and 2 to reel to the described optical thin film manufactured.

The manufacture method of 12. 1 kinds of optical thin films, comprising:

Winding film step, utilizes optical thin film wind2 according to claim 1 and 2 to reel to the film manufacturing optical thin film;

Application step, carries out inverse winding to the described film reeled, coated optical coating fluid, forms coating layer; And

Drying steps, carries out drying to the described coating layer be coated with.

The manufacture method of 13. optical thin films according to claim 12, comprises

Product film winding steps, utilizes optical thin film wind2 according to claim 1 and 2 to reel to the described optical thin film manufactured.

The manufacture method of 14. optical thin films according to claim 12, wherein

Described optical thin film is any one film in the protective film for polarizing plate of liquid crystal indicator, optical compensating film and anti-reflection film.