CN102530609B - Film winding device and method for making optical film employing the same - Google Patents
Film winding device and method for making optical film employing the same Download PDFInfo
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- CN102530609B CN102530609B CN201110303351.6A CN201110303351A CN102530609B CN 102530609 B CN102530609 B CN 102530609B CN 201110303351 A CN201110303351 A CN 201110303351A CN 102530609 B CN102530609 B CN 102530609B
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Abstract
The invention provides a film winding device and a method for making an optical film employing the same. The film winding device (10) winds the movable film (12) upon the winding shaft to form a roller-surrounding object (28), which carries out coiling suspension bearing over the film with the surface pressure above the regulation. Moreover, a triangular-shaped space part (36) is formed by taking the winding starting point as the peak between the coiling suspension bearing film surface and the surface of the roller-surrounding object. The triangular-shaped space part (36) is equipped with an attracting mouth (32) which absorbs the air inside the space part with over-regulated absorbing pressure. Under this condition, the film is wound, suspend, and supported to a support roller (30) in the manner that the surface pressure of the coiling suspension film surface is greater than the absorbing pressure of the absorbing mouth. Moreover, with the changes of the winding diameter of the roller-surrounding object, a moving mechanism is utilized to make the support roller and the absorbing mouth move simultaneously.
Description
Technical field
The present invention relates to film wind2 and employ the manufacture method of blooming of this device, especially relate to the winding technique after the basement membrane manufacturing blooming.
Background technology
Such as, liquid crystal indicator protective film of polarizing plate, require the planar performance of height through bloomings such as the optical compensation films that manufactures treatment process such as the coating of basement membrane are dry and antireflection films.
The basement membranes such as Triafol T (TAC) utilize solution film-forming method to carry out masking usually, and the basement membrane that masking goes out is reeled by wind2.Therefore, the winding faults such as the distortion (knurled portions depression or stretching) of winding changing of the relative positions during winding, winding fold, scratch cut (comprising the small scar of 50 μ ~ 100 about μ), film end (common name is called ear) can become the large problem in quality.
Coating fault after the winding fault of basement membrane can cause or dry fault, therefore carry out than goods film narrow examination more at user place.Especially along with the wide cut (such as more than 2000mm) of film in recent years, be easily involved in air when reeling, the winding that therefore winding fault does not occur becomes difficulty.
Usually, when the film of movement being wound in wireline reel and being formed around roller Roll Sushi, the related wind along with the movement of film is involved in film each other together with the related wind along with the rotation around roller Roll Sushi, thus winding slows down slow and the winding changing of the relative positions occurs.Therefore, needed when reeling, related wind to be got rid of to there is not the winding firmness of the winding changing of the relative positions.
The general method for winding in the past got rid of by related wind is the method improving winding tensions (tension force).But, if improve winding tensions, then due to stress from the ear to film Width concentrate and occur ear distortion (depression of knurled portions or stretching).When especially improving winding tensions when wide film in recent years, the stretching of ear becomes large.
According to this situation, such as, even if exploitation has the wind2 not improving winding tensions and also related wind can be got rid of, patent documentation 1 ~ 3.
The wind2 of patent documentation 1 arranges suction nozzle at the film arriving winding starting point with the spatial portion around the triangular shape of roller Roll Sushi and attracts the method for related wind.In patent documentation 1, the resin-made outshot of low friction is set at the leading section of suction nozzle, even if film is stretched under the effect of suction pressure, shake occurs and contacts with suction nozzle or surrounding member, also can alleviate the degree of the scar of generation.
The wind2 of patent documentation 2 utilizes pressing roller pressing around roller Roll Sushi face and reeling winding starting point, and arrange suction nozzle at the spatial portion of above-mentioned triangular shape and attract the method for related wind.Thus, the shake of the film preventing suction pressure from causing.
The wind2 of patent documentation 3 does not utilize pressing roller, and utilize the blast blown out from Air blowing mouth to press and the method reeled winding starting point in a non-contact manner.Thus, the generation abrading the winding faults such as cut is prevented.
[patent documentation 1] Japanese Unexamined Patent Publication 07-117901 publication
[patent documentation 2] Japanese Unexamined Patent Publication 06-156826 publication
[patent documentation 3] Japanese Unexamined Patent Publication 2005-96915 publication
But film wind2 is in the past also insufficient as the wind2 of the blooming requiring the planar performance of height.
That is, although the wind2 of patent documentation 1 is provided with the resin-made outshot of low friction at the leading section of suction nozzle, when increasing the suction pressure of suction nozzle, the shake of film becomes large, cannot prevent the generation abrading cut.If reduction suction pressure, although then the shake of film reduces, desired winding firmness cannot be obtained.In recent years, as mentioned above, along with the wide cut of blooming, and the air quantity of related wind increases, and needs the suction pressure of more than 200Pa, but in the wind2 of patent documentation 1, when suction pressure is more than 200Pa, shake increases.
In addition, although the wind2 of patent documentation 2 can prevent the shake of film, because pressing roller contacts with face, therefore cannot prevent because of the scratch cut waiting and produce that slides.And, when wide film, need pressing roller to be formed as crown roller (crown roller), easily produce fold.
In addition, the wind2 of patent documentation 3 is owing to can press winding point with non-contacting method completely, therefore, it is possible to the generation of the scratch cut preventing patent documentation 1 and 2 such, but needs high blast, the cost that blower equipment cost is very high.And due to blast, and existence makes the waste material of periphery disperse or produce the problems such as noise.When blooming, the waste material that causes such as to disperse easily becomes the reason of bright spot fault to the attachment of film, therefore preferably use the wind2 that can carry out attracting to waste material the suction nozzle mode got rid of.
Summary of the invention
The present invention makes in view of such situation, even its object is to provide a kind of mode utilizing suction nozzle to be got rid of by related wind, also film can not be made to improve suction pressure while shake occurs, therefore, it is possible to effectively get rid of related wind and firmly reel, be best suited for the manufacture method of the blooming requiring the film wind2 of the winding of the blooming of high planar performance and employ this device.
The film wind2 of the application to achieve these goals, the film of movement is wound up on wireline reel and is formed around roller Roll Sushi, it is characterized in that, possess: anvil roll, it is configured to there is the first narrow and small gap relative to described around roller Roll Sushi mask, to specify that the film of above surface pressure to described winding is wrapping with supporting, and be wrapping with the face of supporting and described around roller Roll Sushi face between to be formed to reel the spatial portion of triangular shape that starting point is summit; Suction nozzle, the mouth leading section of cross section triangular shape is configured in described spatial portion by it, to specify that above suction pressure attracts the air of described spatial portion, and two sides being configured to be formed described cross section triangular shape are respectively relative to described supporting roll surface with describedly have the second narrow and small gap and third space around roller Roll Sushi mask; Travel mechanism, its follow described to make while maintaining described each gap around the change of the winding diameter of roller Roll Sushi described anvil roll and described suction nozzle one mobile, in the described mode being greater than the suction pressure of described suction nozzle by the surface pressure being wrapping with the face of supporting described film is wrapping with and is supported on described anvil roll.
It should be noted that, the spatial portion of triangular shape is not triangle accurately, and refers to the space of roughly triangular shape.
According to structure of the present invention, even if utilize suction nozzle to attract the air of spatial portion, the film kept with the surface pressure being greater than suction pressure by anvil roll also can not be shaken.Thus, even if anvil roll and suction nozzle approach to about 0.5 ~ 1mm to around roller Roll Sushi face, also can not there is film and contact with suction nozzle and produce the situation abrading cut etc.Thereby, it is possible to effectively remove the related wind entering spatial portion with high suction pressure.
Consequently, even if do not improve winding tensions when reeling, also can effectively suppress air to be involved in around the rete of roller Roll Sushi between situation, therefore, it is possible to by film securely around.And, can also be obtained the dust removing effects of the removings such as winding dust around by high attractive force.
As mentioned above, due under the attraction of suction nozzle, film can not be shaken, therefore, it is possible to make anvil roll with around the second gap of the first gap of roller Roll Sushi, anvil roll and suction nozzle and suction nozzle with around the third space of roller Roll Sushi is close must be minimum.The scope of the preferred 0.5 ~ 10mm of the first to third space, the more preferably scope of 1 ~ 5mm.
Further, so, though by anvil roll and suction nozzle with narrow and small gap with around roller Roll Sushi close to configure, travel mechanism also makes anvil roll and the movement of suction nozzle one around the change of the winding diameter of roller Roll Sushi following while maintaining each gap.Thus, even if increase around the winding diameter of roller Roll Sushi, anvil roll and suction nozzle also can not contact with around roller Roll Sushi.
In addition, by increasing the overlapping angle of the film being wrapping with supporting by anvil roll, can reduce and be not wrapping with by anvil roll and floating skyborne membrane portions.Thus, even if utilize suction nozzle with high suction pressure to attract spatial portion, also can not there is film and contact produced shake scar with suction nozzle.Therefore, it is possible to carry out making by the surface pressure being wrapping with the film of supporting become the pulling force of more than 1500Pa, anvil roll footpath, film width condition set.In this case, subsistence level attracts spatial portion with the suction pressure of more than 200Pa.
In addition, when cannot guarantee overlapping angle significantly due to the reason such as mobile route of film, moving of film can be followed and the trend roller that carries out rotary actuation improves surface pressure by using.
In addition, by making the roller footpath of anvil roll be path, and the moving direction carrying out the film of straight ahead can be changed sharp, the advance vector therefore with the related wind of film changes into curve from straight ahead.Thereby, it is possible to reduce the related air quantity in inflow space portion.As the roller footpath of concrete anvil roll, the preferably scope of 20 ~ 150mm, the more preferably scope of 20 ~ 50mm.
In addition, according to the present invention, can by suction nozzle self effectively stop with film related wind, enter spatial portion with around the related wind of the rotation of roller Roll Sushi.In this case, the side of the anvil roll side of the mouth leading section of cross section triangular shape is preferably formed to the radius of curvature curvature surface identical with the radius of curvature of anvil roll.And the side around roller Roll Sushi side of mouth leading section is preferably formed to the radius of curvature curvature surface identical with radius of curvature during the maximum winding diameter be somebody's turn to do around roller Roll Sushi.
In addition, on bearer frame anvil roll and suction nozzle being carried out to one supporting, preferably form the opening supplying the related wind with the movement of film to become separated in flight.
The manufacture method of the blooming of the application to achieve these goals, is characterized in that, at least possesses: utilize the basement membrane rolling step that the film wind2 of above-mentioned the application reels to the basement membrane manufacturing blooming; The described basement membrane of winding is wound off and the working procedure of coating of coated optics coating liquid; Dry drying process is carried out to the described overlay after coated.
According to the present invention, due to the rolling step utilizing the wind2 of above-mentioned explanation to carry out basement membrane, the winding fault such as distortion (knurled portions depression or stretch) of winding changing of the relative positions when reeling, winding fold, scratch cut (comprising the small scar of 50 μ ~ 100 about μ), film end (being commonly referred to ear) therefore can not be there is.Thus, the coating fault that winding fault causes can not be there is in working procedure of coating or drying process, therefore, it is possible to manufacture the blooming of high-quality.
In the present invention, the goods film rolling step utilizing the film wind2 of above-mentioned the application to reel to the blooming produced preferably is possessed.If use film wind2 of the present invention when the blooming of winding products, then can manufacture the blooming of more high-quality.
As blooming, be preferably the protective film of polarizing plate of liquid crystal indicator, optical compensation films, antireflection film any one.Such blooming has high planar performance.
[invention effect]
According to film wind2 of the present invention, even utilize the mode that related wind is got rid of by suction nozzle, film also can not be made to improve suction pressure with shaking, therefore, it is possible to effectively got rid of by related wind and firmly reel.Thereby, it is possible to the faults that reels such as the distortion of winding changing of the relative positions when preventing winding, the fold that reels, scratch cut (comprising the small scar of 50 μ ~ 100 about μ), film end (being commonly referred to ear) (knurled portions depression or stretching).
Therefore, according to the manufacture method of blooming employing this film wind2, the blooming with high planar performance can be produced.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of masking manufacturing line film wind2 of the present invention being loaded basement membrane.
Fig. 2 is the lateral plan of film wind2 of the present invention.
Fig. 3 is the block diagram of film wind2 of the present invention.
Fig. 4 is the partial enlarged drawing of film wind2 of the present invention.
Fig. 5 is the schematic diagram of manufacturing line film wind2 of the present invention being loaded optical compensation films.
Nomenclature:
10... wind2
12... basement membrane
14... masking manufacturing line
16... masking portion
18... wireline reel
20... knurling device
22... ear's clipping apparatus
24... winding tensions control setup
28... around roller Roll Sushi
30... anvil roll
32... suction nozzle
32A... mouth leading section
The side of the anvil roll side of 32B... mouth leading section
The side around roller Roll Sushi side of 32C... mouth leading section
32D... suction port
34... travel mechanism
36... spatial portion
38... bearer frame
42... winding diameter sensor
44... feed screw mechanism
44A... screw member
44B... servomotor torque constant
44C... nut member
44D... back plate
44E... guide bar
46... control part
Detailed description of the invention
Below, explain film wind2 of the present invention and employ the preferred implementation of manufacture method of blooming of this device.
Fig. 1 is the schematic diagram of the masking manufacturing line 14 film wind2 10 (hereinafter referred to as " wind2 ") of the present invention being loaded basement membrane 12.It should be noted that, in the present embodiment, as masking manufacturing line 14, be described with the example be provided with based on the masking portion 16 of solution film-forming method.
The detailed operation of solution film-forming method is not shown, but the coating that obtained after such as having made by dissolution with solvents Triafol T (TAC) of masking portion 16 to the band of movement or rotation the supporting mass curtain coating such as cylinder and form casting films.Then, after peeling off from supporting mass, the film of strip is produced by carrying out drying to solvent.It should be noted that, as the material of basement membrane 12, be not defined as TAC.
As shown in Figure 1, wind2 10 is the devices be wound on by the basement membrane 12 utilizing masking portion 16 masking to go out on wireline reel 18, between masking portion 16 and wind2 10, be provided with knurling device 20, ear's clipping apparatus 22 and winding tensions control setup 24 successively from wind2 10 side.
Knurling device 20 utilizes by mould roller 20A and bears the Width end (be commonly referred to ear 12a) of a pair knurling roller to basement membrane 12 that roller 20B forms and carry out embossing processing etc., thus form the device of multiple minute protrusions.As minute protrusions shape, there are truncated cone shape, pyramid, spheroidal, waveform, grid shape, unsetting etc.
Ear's clipping apparatus 22 utilizes a pair knife-like (not shown) or rotation bladed cutting edge 22A that are disposed in film Width end, the ear 12a of basement membrane 12 cut off the device of removing.
Winding tensions control setup 24 mainly comprises: a pair guide reel 24A, 24B; Be arranged on guide reel 24A, 24B dance roller 24C each other; The tension detection sensor 24D that the guide reel 24B of a side is arranged.The pulling force signal measured by tension detection sensor 24D is to controller (not shown) conveying controlling masking manufacturing line 14.Controller makes dance roller 24C to arrow 26 direction displacement based on the pulling force signal from tension detection sensor 24D, thus winding tensions is adjusted to setting value.Such as, when winding tensions is higher than setting value, make dance roller 24C increase, when winding tensions is lower than setting value, dance roller 24C is declined.Thus, in wind2 10, the winding tensions of winding basement membrane 12 is controlled in certain setting range.Thereby, it is possible to correspond to spooling length and formed around roller Roll Sushi 28 with the winding tensions of the best winding basement membrane 12.
In the present embodiment, the winding diameter be formed as along with spooling length increases around roller Roll Sushi 28 increases and the pattern of winding tensions reduction, but is not limited thereto, and also can suitably use known pattern.
Next, use Fig. 2 ~ Fig. 4, wind2 10 of the present invention is described.
As shown in the above Fig., wind2 10 mainly comprises anvil roll 30, suction nozzle 32 and travel mechanism 34.
Anvil roll 30 is configured to relative to there being the first narrow and small gap L 1 (with reference to Fig. 4) around roller Roll Sushi 28 mask, to specify that the basement membrane 12 of above surface pressure P1 to winding is wrapping with supporting, and be wrapping with supporting basement membrane 12 and around roller Roll Sushi 29 between to be formed to reel the spatial portion 36 of triangular shape that starting point Q is summit.
Suction nozzle 32 is configured with the mouth leading section 32A of cross section triangular shape in spatial portion 36, to specify that above suction pressure P2 is to attract the air of spatial portion 36.The inside of suction nozzle 32 is formed as cavity, and is formed with the sucking hole 32D (with reference to Fig. 4) of slit-shaped at mouth leading section 32A along the Width around roller Roll Sushi 28.And suction nozzle 32 is connected with not shown vacuum via suction tube 32E.Further, suction nozzle 32, by attracting the air of spatial portion 36, is avoided between the rete around roller Roll Sushi 28, being involved in air during winding.
In the attraction of above-mentioned suction nozzle 32 pairs of spatial portions, basement membrane 12 is wrapping with and is supported on anvil roll 30 by the mode being greater than the suction pressure P2 of suction nozzle 32 with the surface pressure P1 of the basement membrane 12 being wrapping with supporting by anvil roll 30.
In addition, as shown in Figure 4, two sides 32B, 32C of the mouth leading section 32A of Formation cross-section triangular shape, relative to anvil roll 30 with around roller Roll Sushi 28, have the second narrow and small gap L 2 and third space L3 respectively and configure.Thus, formation stops that the related wind along with the movement of basement membrane 12 and the related wind along with the rotation around roller Roll Sushi 28 enter the wind shielding structure of spatial portion 36.
The scope of the preferred 0.5 ~ 10mm of above-mentioned the first to third space L1 ~ L3, the more preferably scope of 1 ~ 5mm.When gap L 1 ~ L3 is less than 0.5mm, anvil roll 30 likely contacts with around roller Roll Sushi 28 across basement membrane 12 (usual thickness is about 80 μm).In addition, when more than 10mm, windproof effect described later is deteriorated, and formed in the basement membrane 12 of spatial portion 36 not to be wrapping with the part (part of movement aloft) of supporting by anvil roll 30 elongated, therefore become the reason of basement membrane 12 shake when utilizing suction nozzle 32 to attract.It should be noted that, the first to third space L1 ~ L3 without the need to being identical gap, as long as and in above-mentioned scope, also can be different.Such as, anvil roll 30 and mouth leading section 32A more close around roller Roll Sushi 28, anvil roll 30 is nearer with the distance of winding starting point Q, can shorten and be present in the long L4 of aerial film (reference Fig. 4), therefore preferably.Specifically, L1 and L3 can be formed as 0.5 ~ 1mm.
In this case, as shown in Figure 4, the side 32B of anvil roll 30 side of the mouth leading section 32A of cross section triangular shape is preferably formed to the radius of curvature curvature surface identical with the radius of curvature of anvil roll 30.Thereby, it is possible to more effectively stop that the related wind W1 of the movement along with basement membrane 12 enters into spatial portion 36.
In addition, when winding diameter around roller Roll Sushi 28 is large footpath, related air quantity is large compared with during path, and therefore the side 32C around roller Roll Sushi 28 side of mouth leading section 32A is preferably formed to the radius of curvature curvature surface identical with radius of curvature during maximum winding diameter around roller Roll Sushi 28.Thereby, it is possible to more effectively stop that the related wind W2 along with the rotation around roller Roll Sushi 28 enters into spatial portion 36.
As shown in Figures 2 and 3, travel mechanism 34 follow to remain above-mentioned around the change of the winding diameter of roller Roll Sushi 28 each gap L 1, anvil roll 30 and suction nozzle 32 are moved integratedly while L2, L3.
Travel mechanism 34 mainly comprises: bearer frame 38, and the S. A. 30A two supports of anvil roll 30 is rotatable by it, and supports suction nozzle 32 and anvil roll 30 integratedly; Feed screw mechanism 44, it makes bearer frame 38 move back and forth along the arrow A-B direction of Fig. 2; Winding diameter sensor 42 (with reference to Fig. 1, Fig. 2), it measures the winding diameter around roller Roll Sushi 28; Control part 46 (with reference to Fig. 2), its measured value based on winding diameter sensor 42 and control feed screw mechanism 44, to make the moving velocity of bearer frame 38 identical with gathering way of winding diameter.
Winding diameter sensor 42 is also not particularly limited, as long as can measure the change of winding diameter accurately.Such as, as shown in Figure 1, the method calculating winding diameter at guide reel 24A installation impulse deviser 42A as winding diameter sensor 42 according to impulse singla can be adopted.Or, as shown in Figure 2, laser range finder 42B also can be used as winding diameter sensor 42, be measured to the distance around roller Roll Sushi 28, calculate winding diameter according to mensuration distance.
Feed screw mechanism 44 comprises: flighting front end is fixed on the screw member 44A of the central portion of bearer frame 38; Servomotor torque constant 44B screw member 44A being rotated the link of screw thread base end part; The nut member 44C that screw member 44A is screwed togather; Nut member 44C is supported on the back plate 44D of wind2 main body (not shown); To a pair guide bar 44E, 44E that the movement of bearer frame 38 guides.It should be noted that, servomotor torque constant 44B is also fixed on not shown wind2 main body.Thus, when servomotor torque constant 44B makes screw member 44A rotate to such as arrow X-direction, to be guided by the anvil roll 30 of bearer frame 38 one supporting and the directed excellent 44E of suction nozzle 32 and arrow A direction to Fig. 2 is moved.And, when servomotor torque constant 44B makes screw member 44A rotate to such as arrow Y-direction, to be guided by the anvil roll 30 of bearer frame 38 one supporting and the directed excellent 44E of suction nozzle 32 and arrow B direction to Fig. 2 is moved.
According to the wind2 10 formed as mentioned above, the anvil roll 30 relative to there being the first narrow and small gap L 1 around roller Roll Sushi 28 mask is set, and to specify that the basement membrane 12 of above surface pressure P1 to movement is wrapping with supporting.Further, be wrapping with supporting basement membrane 12 and around roller Roll Sushi 28 between with the starting point Q that reels for summit and the spatial portion 36 of triangular shape that formed in configure mouth leading section 32A, and to specify that above suction pressure P2 attracts the air of spatial portion 36.In the attraction that this suction nozzle 32 carries out, the mode being greater than the suction pressure P2 that suction nozzle 32 produces with the surface pressure P1 of the basement membrane 12 being wrapping with supporting by anvil roll 30 carries out being wrapping with supporting.
Thus, even if utilize suction nozzle 32 to attract the air of spatial portion 36, also can not be shaken (hereinafter referred to as " stabilization effect ") by the basement membrane 12 that anvil roll 30 keeps with the surface pressure P1 being greater than suction pressure P2.Thus, basement membrane 12 can not be there is contact with suction nozzle 32 and produce the situation abrading cut etc., therefore, it is possible to effectively removed by the related wind entering spatial portion 36 with high suction pressure P2.Consequently, even if do not improve winding tensions when reeling, the situation being involved in air between the base membrane layer around roller Roll Sushi 28 can also effectively be suppressed, therefore, it is possible to securely around basement membrane 12.And, by high attractive force P2, can also obtain the dust removing effects of the removings such as winding dust around.
In addition, when arranging anvil roll 30 from the position left around roller Roll Sushi 28 face, basement membrane 12 extension of movement aloft to winding starting point Q, the basement membrane 12 of therefore movement aloft and around between roller Roll Sushi 28 with the starting point Q that reels for summit and form the spatial portion 36 of triangular shape.Thus, utilize suction nozzle 32 with high suction pressure P2 to attract spatial portion 36 time, aerial basement membrane 12 can be supported in and shake, contact with suction nozzle 32 and produce and abrade cut etc.
Specifically, in order to utilize suction nozzle 32 effectively to suppress basement membrane 12 interlayer around roller Roll Sushi 28 to be involved in air to attract the air of spatial portion 36, suction nozzle is preferably utilized with the suction pressure P2 of more than 200Pa to attract spatial portion 36.With regard to above-mentioned viewpoint, in the present invention, by increasing the overlapping angle α (with reference to Fig. 4) being wrapping with the basement membrane 12 of supporting by anvil roll 30, and can carry out being wrapping with supporting in the mode being become more than 1500Pa by the surface pressure P1 being wrapping with the basement membrane 12 of supporting.
It should be noted that, overlapping angle α refer to the basement membrane 12 of movement from be wrapping with in anvil roll 30 to terminating the neutral angle that is wrapping with in anvil roll 30.
Therefore, even if utilize suction nozzle 32 with the suction pressure of more than 200Pa to attract spatial portion 36, be only less than 1500pa, basement membrane 12 would not occur and peel off from anvil roll 30 and the situation of shaking.When overlapping angle α cannot be guaranteed significantly owing to carrying the relation in the path of basement membrane 12, follow moving of basement membrane 12 by use and carry out the trend roller (tendency roll) (not shown) of rotary actuation and same effect can be obtained.
In addition, by increasing the overlapping angle α of basement membrane 12 relative to anvil roll 30, and the moving direction of the basement membrane 12 of straight ahead can be changed sharp.Thus, the advance vector with the related wind W1 of basement membrane 12 changes into curve from straight ahead, therefore, it is possible to reduce the related air quantity (hereinafter referred to as " related wind vector variable effects ") in inflow space portion 36.
In order to the advance vector of related wind W1 is changed into curve from straight ahead, preferably reduce the roller footpath of anvil roll 30 and guarantee overlapping angle α significantly.Specifically, preferably the roller footpath of anvil roll 30 is formed as the path of the scope of 20 ~ 150mm, more preferably the scope of 20 ~ 50mm.When roller footpath is less than 20mm, easily bend.
And, according to the present invention, be formed as anvil roll 30 side of the mouth leading section 32A of cross section triangular shape side 32B and around the side 32C of roller Roll Sushi 28 sides to have second and third narrow and small gap L 2, the mode of L3 configures.Thereby, it is possible to utilize suction nozzle 32 self effectively stop with the related wind W1 of basement membrane 12 and enter spatial portion 36 (hereinafter referred to as " windproof effect of suction nozzle self ") with the related wind W2 around the rotation of roller Roll Sushi 28.
In this case, the side 32B of anvil roll 30 side of the mouth leading section 32A of cross section triangular shape is preferably formed to the radius of curvature curvature surface identical with the radius of curvature of anvil roll 30.Thereby, it is possible to effectively stop the related wind W1 of the movement with basement membrane 12.And, when the side 32C around roller Roll Sushi 28 side of mouth leading section 32A is preferably formed to radius of curvature and maximum winding diameter around roller Roll Sushi 28 (around at the end of winding diameter) the identical curvature surface of radius of curvature.Thereby, it is possible to the related wind W2 that causes around the rotation of roller Roll Sushi 28 of barrier ring effectively.Namely, due to larger than the related air quantity during path when winding diameter around roller Roll Sushi 28 is large footpath, as long as therefore the side 32C around roller Roll Sushi 28 side of mouth leading section 32A is formed as the radius of curvature curvature surface identical with radius of curvature during maximum winding diameter, just related wind W2 effectively can be stopped.And, because radius of curvature during maximum winding diameter is close to straight line, even if when being therefore path around the winding diameter of roller Roll Sushi 28, the side 32C around roller Roll Sushi 28 side also can not come in contact with around roller Roll Sushi 28 face.
In above-mentioned winding, travel mechanism 34 follow to make while maintaining each gap L 1 ~ L3 around the change of the winding diameter of roller Roll Sushi 28 anvil roll 30 and suction nozzle 32 one mobile, therefore anvil roll 30 and suction nozzle 32 can not contact with around roller Roll Sushi 28.In this case, as shown in Figures 2 and 3, on bearer frame anvil roll and suction nozzle being carried out to one supporting, preferably form the opening of becoming separated in flight for related wind W1.
So, although wind2 10 of the present invention is the modes utilizing suction nozzle 32 to be got rid of by related wind, but by the windproof effect of above-mentioned stabilization effect, related wind vector variable effects, suction nozzle 32 self, also can not there is the winding fault ground such as scratch cut and effectively get rid of related wind and firmly reel.Therefore, the winding of the blooming requiring high planar performance is best suited for.
Next, according to Fig. 5, illustrate to implement to apply to the basement membrane 12 reeled by above-mentioned wind2 10 and dryly wait process and manufacture the routine of the manufacture method of blooming.As an example of blooming, be described with the example of optical compensation films.
It should be noted that, describe the situation that blooming is optical compensation films in the present embodiment, but blooming is not limited to optical compensation films, also after can being coated with hardening coating liquid on the basement membrane of band shape, adding hot blast in arid region utilization makes overlay dry, make the various bloomings of dry overlay sclerosis at hardening region, such as, also go for the manufacture method of antiglare film, antireflection film etc.
Fig. 5 is the sketch of the brief configuration of the wind2 10 represented for implementing optical compensation films of the present invention.
As shown in Figure 5, in advance the strip base film 12 being formed with the transparent resin layer that alignment films is formed is sent from conveyer 112.The directed roller 116 of basement membrane 12 guides and sends into the device for grinding and processing 118 being configured in downstream, utilizes mixing roll 120 pairs of transparent resin layers to carry out milled processed.Thus, alignment films is formed.
In device for grinding and processing 118, mixing roll 120 is configured between two conveying roller of the continus convergence in-process being in basement membrane 12.Further, basement membrane 12 by the mixing roll 120 that overlaps rotation is transferred, thus by milled processed continuously.In this case, mixing roll 120 also can by the throughput direction tilted configuration of its S. A. relative to basement membrane 12.
Be configured with dust removal machine 122 in the downstream of device for grinding and processing 118, remove the dust be attached on basement membrane 12.And, at the downstream of dust removal machine 122 configuration gravure applying device 124, the coating liquid comprising liquid crystal compounds is coated in the alignment films of basement membrane 12.As liquid crystal compounds, preferably use the dish-like compound of liquid crystal liquid crystal property with bridging property function base.
Gravure applying device 124 possesses gravure roll 126 and is disposed in the below of this gravure roll 126 and fills with the drip pan 128 of the coating liquid comprising liquid crystal compounds, and about the latter half of gravure roll 126 is immersed in coating liquid.And, at the position at about 10 o'clock of gravure roll 126 configuration scraper plate 129.Thus, to the unit supply coating liquid of gravure roll 126, after utilizing scraper plate 129 to be wiped off by unnecessary coating liquid, the orientation face to basement membrane 12 applies.The coating amount of coating liquid is preferably 10mL/m
2below.
Upstream guide reel 117 and downstream guide reel 119 are configured to the state almost parallel with gravure roll 126.And the both ends of upstream guide reel 117 and downstream guide reel 119 are supported as rotating freely by not shown bearing components (ball-bearing casing etc.), and upstream guide reel 117 and downstream guide reel 119 preferably do not have driver train.Gravure applying device 124 is preferably arranged in the atmosphere cleaned clean room etc.Cleanliness level preference ranking less than 1000, further preference ranking less than 100, more preferably grade less than 10.
As applying device, in Figure 5, show the example of gravure applying device 124, but be not defined in this.Such as suitably can use the methods such as dip coating method, air knife coating process, curtain coating process, roll coating method, wire bar coating process, miniature gravure method or extrusion coating method.The delivery speed of basement membrane 12 preferably 5 ~ 200m/ is divided.And, the width preferably 0.5 ~ 3m of the overlay that basement membrane 12 is formed.
The basement membrane 12 being formed with the overlay comprising liquid crystal compounds is close to preliminarily dried region 130 drying being arranged on downstream.Further, arid region 132 is set in the downstream in preliminarily dried region 130, dry further to the overlay of the basement membrane 12 of drying.Further, hardening region 136 is set in the downstream of arid region 132, the overlay of dried basement membrane 12 is hardened.
In this case, be preferably provided with between arid region 132 and hardening region 136 and temperature controlled than the temperature of arid region 132 and all low zone line 134 of the temperature of hardening region 136.When carrying overlay from arid region 132 directly to hardening region 136 when there is no zone line 134, in arid region 132 by the basement membrane 12 that heats and condense from the low molecular weight compound that overlay evaporates at the hardening region 136 lower than the temperature of arid region 132.The precipitate (condensation thing) of separating out due to condensation is attached to basement membrane 12 back side and coating aspect and pollutes.And the condensation thing condensed at the wall etc. of hardening region 136 falls to being attached to strip base film 12 back side and applies face and pollute.It should be noted that, at this, low molecular weight compound refers to that mol wt is the material of less than 1000.
In the manufacture of optical compensation films, with regard to this low molecular weight compound, such as there are triphenyl phosphate (TPP), butyl benzyl phthalate (BPP) as plasticiser, there is gorgeous good solid (IRGACURE) 184 as hard coat agent, have acryloxypropyl trimethoxy silane etc. as silane coupling agent.
Further, in the same manner as the situation of the winding of above-mentioned basement membrane 12, the optical compensation films 13 manufactured through hardening region 136 is reeled by the wind2 10 of above-mentioned explanation via winding tensions control setup 24.
So, by the winding at basement membrane 12 with apply basement membrane 12 and dry wait process and these both sides of winding of optical compensation films 13 of manufacturing use wind2 10 of the present invention, and can produce winding changing of the relative positions when not reeling, winding fold, scratch cut (comprising the small scar of 50 μ ~ 100 about μ), film end (being commonly referred to ear) distortion (knurled portions depression or stretch) etc. to reel fault and there is the blooming of high planar performance.
Next, the various materials used in the manufacture of the blooming of present embodiment are described.
As the dish-like compound (liquid crystal compounds) used in present embodiment, the compound described in each publication of No. 7-267902, Japanese Unexamined Patent Publication, No. 7-281028, Japanese Unexamined Patent Publication, No. 7-306317, Japanese Unexamined Patent Publication can be used.According to above-mentioned document, optical anisotropic layer (comprising the overlay of liquid crystal compounds) is the layer formed by the compound with dish-like structural units.That is, the optical anisotropic layer polymeric layer that is the dish-like compound layers of low-molecular-weight liquid crystal liquid crystal property such as monomer or obtained by the polymerization (sclerosis) of the dish-like compound of the liquid crystal liquid crystal property of polymerizability.
As dish-like (discoid) compound, such as there are the research report of C.Destrade etc., Mol.Cryst.71 rolls up, benzene derivative described in 111 pages (1981), the research report of C.Destrade etc., Mol.Cryst.122 rolls up, 141 pages (1985), Physicslett, A, 78 volumes, trimer indene derivative described in 82 pages (1990), the research report of B.Kohne etc., Angew.Chem.96 rolls up, the research report of the cyclohexane derivant described in 70 pages (1984) and J.M.Lehn etc., J.Chem.Commun., 1794 pages (1985), the research report of J.Zhang etc., J.Am.Chem.Soc.116 rolls up, the large ring of Azacrown ether containing system or phenylacetylene system etc. described in 2655 pages (1994).
Above-mentioned dish-like (discoid) compound is normally using them as the parent nucleus of molecular center, the alkyl of straight chain or alkoxy, displacement benzoxy etc. are the structure of radial line displacement as this straight chain, display liquid crystal liquid crystal property, comprises the compound being commonly called dish-like liquid crystal.But, as long as molecule self has a negative axle, certain orientation can be given, not be defined as above-mentioned record.And, in above-mentioned publication, being formed by discoid compound refers to without the need to making the compound finally obtained be above-claimed cpd, and comprise the such as dish-like liquid crystal of above-mentioned low molecule there is the base reacted under heat, light etc., result is that polymerization or crosslinked occurs by reacting under heat, light etc., forms Polymer and quantizes and the situation losing liquid crystal liquid crystal property.And, preferably use at least one containing the discoid compound that can form the columnar phase of dish-like nematic phase or an axle, and there is optically anisotropic compound.And discoid compound is preferably triphenylene derivant.At this, triphenylene derivant is preferably the compound represented in (the changing 2) described in Japanese Unexamined Patent Publication 7-306317 publication.
As the basement membrane 12 of the supporting mass of orientation rete, preferably use the cellulose acylate films such as TAC.Specifically, the film recorded in detail in Japanese Unexamined Patent Publication 9-152509 publication can be used.That is, alignment films is arranged on cellulose acylate film or is arranged in the lower coating that is coated with and is located on this cellulose acylate film.Alignment films plays function in the mode of the differently-oriented directivity limiting the dish-like compound of liquid crystal liquid crystal property disposed thereon.At this, as long as alignment films can give orientation to optical anisotropic layer, it can be random layer.
As the preferred example of alignment films, can list the layer after the milled processed of organic compound (preferred polymers), mineral compound oblique side's evaporation layer and be there is the built up film that the layer of fine groove and ω-tricosanic acid, two octadecyl methyl ammonium chloride and methyl stearate etc. are formed by Lan Muer-Bu Luoji (Langmuir-Blodgett) method (LB film) or the layer by the imparting in electric field, magnetic field, dielectric being carried out to orientation.
As the organic compound of alignment films, such as, can list the compound such as poly-mer and silane coupling agent such as polymethyl methacrylate, acrylic acid/methacrylic acid copolymer, styrene/maleimide copolymer, polyvinyl alcohol, poly-(N hydroxymethyl acrylamide), styrene/ethylene base toluene copolymers, chlorosulphonated polyethylene, nitrocellulose, polyvinylchloride, chloridized polyolefin, polyester, polyimide, vinyl acetate/ethlyene dichloride copolymer, ethylene/vinyl acetate copolymer, carboxymethyl cellulose, polyethylene, polypropylene and polycarbonate.As the example of preferred poly-mer, list polyimide, polystyrene, the poly-mer of styrene derivative, gelatin, polyvinyl alcohol and there is the alkyl-modified polyvinyl alcohol of alkyl (preferred carbon number more than 6).
Wherein, particularly preferably alkyl-modified polyvinyl alcohol, it makes the ability of the dish-like compound of liquid crystal liquid crystal property orientation equably excellent.It is speculated that because the strong interactional cause of the alkyl chain of orientation face and the alkyl side chain of dish-like liquid crystal.And the preferred carbon number 6 ~ 14 of alkyl, is more preferably combined with polyvinyl alcohol via-S-,-(CH3) C (CN)-or-(C2H5) N-CS-S-.Abovementioned alkyl modified polyvinylalcohol has alkyl in end, preferred basicity more than 80% and the polymeric level more than 200.And, the commercially available products such as MP103, MP203, R1130 that the above-mentioned polyvinyl alcohol having alkyl at side chain can utilize kuraray (strain) to make.
In addition, the widely used polyimide film (polyimide of preferred contain fluorine atoms) as the organic alignment films also preferred alignment films as liquid crystal indicator (LCD).This can by polyamic acid (such as, the LQ/LX series that Hitachi changes into (strain) makes, the SE series etc. that Nissan Chemical (strain) is made) be coated on netted, carry out 0.5 ~ 1 hour burn till at 100 ~ 300 DEG C after, obtain by grinding.
In addition; the alignment films being applicable to cellulose acylate film imports above-mentioned poly-mer preferably by by reactive base; or above-mentioned poly-mer is used together with the crosslinking agent such as isocyanate compound and epoxy compound, and the cured film obtained by making these polymer hardens.
The liquid crystal compounds of the poly-mer and optical anisotropic layer that are used in alignment films preferably carries out chemical bond via the interface of their layer.Polyvinyl alcohol after the poly-mer of alignment films preferably utilizes the base with ethylene moiety, ethylene oxide moiety or aziridinyl part to be replaced by least one hydroxyl is formed.The base with ethylene moiety, ethylene oxide moiety or aziridinyl part preferably combines via ether, polyurethane combines, acetal combines or ester combines and combines with the polymer chain of polyvinyl alcohol derivative.The base with ethylene moiety, ethylene oxide moiety or aziridinyl part does not preferably have aromatic ring.Above-mentioned polyvinyl alcohol is preferably (changing 22) described in Japanese Unexamined Patent Publication 9-152509 publication.
The processing method that above-mentioned milled processed can utilize the liquid crystal aligning treatment process as LCD and extensively adopt.That is, following method can be adopted, that is, by make paper using or gauze, felt, rubber or nylon, poly-ester fibres etc. in a certain direction friction orientation film face and obtain the method for orientation.Usually, plant the cloth of hair etc. fifty-fifty by using the grinding that length and true fibre carry out repeatedly degree is implemented.
In addition, as the evaporation material of inorganic oblique side's vapor-deposited film, be representative with SiO, there are TiO
2, ZnO
2deng metallic oxide or MgF
2on the metal such as fluoride, Au, A1.It should be noted that, as long as the material of metallic oxide high-k just can be used as oblique side's evaporation material, be not defined as above-mentioned substance.Inorganic oblique side's vapor-deposited film can use evaporation coating device to be formed.Evaporation can be carried out by meshwork being fixed or make that rectangular meshwork moves and continuous evaporating-plating forms inorganic oblique side's vapor-deposited film.As not using alignment films, optical anisotropic layer being carried out to the method for orientation, there are the temperature the method for giving electric field or magnetic field that are heated to the optical anisotropic layer in meshwork can be formed dish-like liquid crystal layer.
As the usability methods to liquid crystal indicator of optical compensation films being formed with optical anisotropic layer on cellulose acylate film, preferably utilize lining cement at the above-mentioned optical compensation films of one-sided bonding of polarization plates or utilize adhesives at the above-mentioned optical compensation films of one-sided bonding of polarization element as protective film.Optical anisotropic device preferably at least has dish-like structural units (preferred dish-like liquid crystal).
In addition, preferably, the disc face of above-mentioned dish-like structural units is relative to cellulose acylate film face tilt, and the disc face of dish-like structural units and cellulose acylate film angulation change on the depth direction of optical anisotropic layer.
In addition, above-mentioned optical compensation films is particularly preferably used in transmission type liquid crystal display device.Tou Over type liquid crystal indicator is formed by liquid crystal cells and two polarization plates being configured in liquid crystal cells both sides.Liquid crystal cells holds liquid crystal between two electrode base boards.Optical compensation films configures one between liquid crystal cells and the polarization plates of a side, or configures two between liquid crystal cells and the polarization plates of both sides.The preferred VA pattern of pattern of liquid crystal cells, TN pattern or ocb mode.
[embodiment 1]
The wind2 width 2000mm that masking goes out in the masking manufacturing line of Fig. 1 of the condition by following experiment 1 ~ 3, the three cellulose acetate membrane of thickness 80 μm have been carried out reeling experiment.
(winding condition)
Experiment 1... is the situation not using anvil roll 30 and suction nozzle 32 and winding.
Experiment 2... is the use of the situation of the wind2 10 of the present embodiment of above-mentioned explanation.Anvil roll 30 is 3mm with the gap L 1 around roller Roll Sushi 28, and anvil roll 30 is 5mm with the gap L 2 of the side 32B of the anvil roll side of suction nozzle 32, and the side 32C around roller Roll Sushi 28 side of suction nozzle 32 is 5mm with the gap L 3 around roller Roll Sushi 28.And the suction pressure of suction nozzle 32 is set as 1100Pa.
Experiment 3... is configured with anvil roll 30 and suction nozzle 32 in the same manner as experiment 2, but does not carry out the situation of the attraction of suction nozzle 32.
(winding evaluation method)
As winding evaluation method, in experiment 1 ~ 3, the winding tensions for obtaining identical " winding firmness " is compared.That is, in experiment 1, winding firmness when carrying out with the winding tensions of the intensity of 600N is " benchmark winding firmness ", in experiment 2 and 3, have studied the winding tensions obtained needed for the winding firmness identical with " benchmark winding firmness ".
(test results)
Consequently, test 2 winding tensions is reduced to 535N also can obtains " benchmark winding firmness " identical with testing 1.That is, relative to experiment 1, winding tensions is reduced 65N and also can obtain identical winding firmness by experiment 2.And, although the suction pressure that suction nozzle 32 produces is promoted to 1100Pa, the shake of film when not reeling.
Winding tensions is reduced to 560N and also can obtains " benchmark winding firmness " identical with testing 1 by experiment 3.That is, relative to experiment 1, winding tensions is reduced 40N and also can obtain identical winding firmness by experiment 3.
Thus, even if utilize the mode that related wind is got rid of by suction nozzle, formed like that by the wind2 10 illustrated in present embodiment, film also can be made not improve suction pressure with shaking, therefore, it is possible to effectively related wind got rid of and firmly reel.
In addition, from the comparing of winding tensions of experiment 2 with experiment 3, suction nozzle 32 be 25N to the effect reducing winding tensions, anvil roll 30 be 40N to the effect reducing winding tensions, the activity ratio of anvil roll 30 is larger.
Claims (12)
1. a film wind2, is wound up into the film of movement on wireline reel and is formed around roller Roll Sushi, it is characterized in that possessing:
Anvil roll, it is configured to there is the first narrow and small gap relative to around roller Roll Sushi mask, to specify that the film of above surface pressure to described winding is wrapping with supporting, and be wrapping with the face of supporting and described around roller Roll Sushi face between to be formed to reel the spatial portion of triangular shape that starting point is summit;
Suction nozzle, the mouth leading section of cross section triangular shape is configured in described spatial portion by it, to specify that above suction pressure attracts the air of described spatial portion, and two sides being configured to be formed described cross section triangular shape are respectively relative to supporting roll surface with describedly have the second narrow and small gap and third space around roller Roll Sushi mask;
Travel mechanism, it makes described anvil roll and described suction nozzle one move described in following while maintaining described each gap around the change of the winding diameter of roller Roll Sushi,
In the described mode being greater than the suction pressure of described suction nozzle by the surface pressure being wrapping with the face of supporting described film is wrapping with and is supported on described anvil roll.
2. film wind2 according to claim 1, is characterized in that,
The suction pressure that described suction nozzle produces is 200 ~ 1500Pa.
3. film wind2 according to claim 1 and 2, is characterized in that,
Be wrapping with by increasing described film the overlapping angle be supported on described anvil roll, thus make described surface pressure be greater than described suction pressure.
4. film wind2 according to claim 1 and 2, is characterized in that,
By using trend roller as described anvil roll, and described surface pressure is made to be greater than described suction pressure.
5. film wind2 according to claim 1 and 2, is characterized in that,
The roller footpath of described anvil roll is in the scope of 20 ~ 150mm.
6. film wind2 according to claim 1 and 2, is characterized in that,
Described first gap to third space in the scope of 0.5 ~ 10mm.
7. film wind2 according to claim 1 and 2, is characterized in that,
Side in described two sides, described anvil roll side is formed as the radius of curvature curvature surface identical with the radius of curvature of described anvil roll, and the described side around roller Roll Sushi side is formed as the radius of curvature curvature surface identical with radius of curvature during the maximum winding diameter be somebody's turn to do around roller Roll Sushi.
8. film wind2 according to claim 1 and 2, is characterized in that,
Described anvil roll and described suction nozzle by the supporting of bearer frame one, and are formed with the opening of becoming separated in flight for the related wind along with the movement of film on this bearer frame.
9. a manufacture method for blooming, is characterized in that, at least possesses:
Utilize the basement membrane rolling step that the film wind2 described in claim 1 or 2 reels to the basement membrane manufacturing blooming;
The described basement membrane of winding is wound off and the working procedure of coating of coated optics coating liquid;
Dry drying process is carried out to the overlay after coated.
10. the manufacture method of blooming according to claim 9, is characterized in that,
Possesses the goods film rolling step utilizing the film wind2 described in claim 1 or 2 to reel to the described blooming produced.
The manufacture method of 11. bloomings according to claim 9, is characterized in that,
Described blooming be the protective film of polarizing plate of liquid crystal indicator, optical compensation films, antireflection film any one.
The manufacture method of 12. bloomings according to claim 10, is characterized in that,
Described blooming be the protective film of polarizing plate of liquid crystal indicator, optical compensation films, antireflection film any one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010222108A JP5537373B2 (en) | 2010-09-30 | 2010-09-30 | Film winding apparatus and optical film manufacturing method using the apparatus |
| JP2010-222108 | 2010-09-30 |
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| CN102530609A CN102530609A (en) | 2012-07-04 |
| CN102530609B true CN102530609B (en) | 2015-06-24 |
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| JP2015140237A (en) * | 2014-01-28 | 2015-08-03 | 日本ゼオン株式会社 | Film roll-manufacturing device, and film roll-manufacturing method |
| BR112017003100B1 (en) * | 2014-10-14 | 2021-12-14 | Philip Morris Products S.A. | APPARATUS AND METHOD TO JOIN SUBSTANTIALLY FLAT CONTINUOUS MATERIAL |
| CN105692271B (en) * | 2016-04-15 | 2017-08-11 | 上海金叶包装材料有限公司 | Device is rewinded after a kind of roll web cutting |
| CN105775822A (en) * | 2016-05-23 | 2016-07-20 | 常州回天新材料有限公司 | Air exhausting type water treatment film winding device |
| JP6394664B2 (en) * | 2016-09-13 | 2018-09-26 | トヨタ自動車株式会社 | Electrode plate pressing device and electrode plate manufacturing method |
| CN107381149B (en) * | 2017-08-25 | 2023-12-01 | 山东腾塑新材料有限公司 | Thermoplastic film rolling mechanism with flattening function |
| JP7095197B2 (en) * | 2017-12-18 | 2022-07-05 | マシン・テクノロジー株式会社 | Film body winding mechanism |
| KR20200123744A (en) * | 2019-04-22 | 2020-10-30 | 스미또모 가가꾸 가부시키가이샤 | Touch roll and winding device |
| TW202146122A (en) * | 2020-01-27 | 2021-12-16 | 日商松下知識產權經營股份有限公司 | Manufacturing method for multilayered film for recording and reproduction, and manufacturing device for multilayered film for recording and reproduction |
| JP7339212B2 (en) * | 2020-06-12 | 2023-09-05 | 日東電工株式会社 | Winding device, film roll manufacturing system, and film roll manufacturing method |
| CN113291894A (en) * | 2021-05-07 | 2021-08-24 | 苏琴 | Drawing type winding device for plastic film |
| CN115165577B (en) * | 2022-09-07 | 2023-02-07 | 常州树杰塑业有限公司 | Antistatic PE film fold detection device |
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| JP5537373B2 (en) | 2014-07-02 |
| CN102530609A (en) | 2012-07-04 |
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