CN206584067U - The manufacture device of polarizing coating - Google Patents
The manufacture device of polarizing coating Download PDFInfo
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- CN206584067U CN206584067U CN201720168252.4U CN201720168252U CN206584067U CN 206584067 U CN206584067 U CN 206584067U CN 201720168252 U CN201720168252 U CN 201720168252U CN 206584067 U CN206584067 U CN 206584067U
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- polyvinyl alcohol
- resin film
- alcohol resin
- polarizing coating
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Abstract
The utility model provide can precision calculate well the polarizing coating obtained after treatment length polarizing coating manufacture device.The manufacture device of the polarizing coating conveys polyvinyl alcohol resin film while being handled the polyvinyl alcohol resin film and obtaining polarizing coating, wherein, the manufacture device of the polarizing coating possesses：Driven roller, it conveys the polyvinyl alcohol resin film；Test section, it detects the rotation amount of the driven roller；And processing unit, it makes the polyvinyl alcohol resin film contact and be handled the polyvinyl alcohol resin film with treatment fluid, the driven roller is configured at the position that upstream side is leaned on than the processing unit, and the position that the transport road length being configured at untill the position that the polyvinyl alcohol resin film is initially contacted with the treatment fluid is played in the position terminated from the contact with the polyvinyl alcohol resin film in the driven roller is below 20m.
Description
Technical field
The utility model relates to the manufacture device of the polarizing coating of the member of formation as polarization plates.
Background technology
Dichroism pigment as polarizing coating makes iodine, dichroic dye in the past is adsorbed in the polyethylene after uniaxial extension
Polarizing coating obtained from alcohol resin film and orientation.Usually using bonding agent polarizing coating single or double fit diaphragm and
Polarization plates are formed, the polarizing coating is used to fill with liquid crystal displays such as LCD TV, personal computer display and portable phones
It is set to the image display device of representative.
Generally, polarizing coating is manufactured in the following way：Implement by the polyvinyl alcohol resin film of the strip of continuous conveying according to
Secondary be impregnated in is swelled bath, dye bath, the processing of the such processing bath of crosslinking bath, and implements during this series of processing
Extension handles (such as patent document 1).
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2015-11151 publications
Polarizing coating can be manufactured continuously in the following way：Using being disposed with place as described above on transport path
The manufacture device of bath is managed, is being rolled up the polyvinyl alcohol from blank while (rolling piece) continuously rolls out polyvinyl alcohol resin film
The processing that resin film is impregnated on transport path successively bathes to be handled.In the manufacture device of polarizing coating, generally by many
Individual roller formation transport path.
In the manufacture device of polarizing coating as described above, by the polyethenol series for making the before processing comprising extension processing
The conveying capacity of resin film is multiplied by the extension ratio set in processing unit, the polarizing coating obtained after treatment thus, it is possible to calculate
Length (predicted value).If high-precision predicted value can be obtained, the predicted value can be applied flexibly in by being carried out with measured value
That compares and carry out produces prediction, replacement of measured value of possibility of problem etc. in manufacture device.However, in the presence of even in
Do not have to be difficult to obtain asking as the high-precision predicted value close with measured value in the case of generation problem in manufacture device yet
Topic.
Utility model content
The purpose of this utility model be there is provided can precision calculate the length of the polarizing coating obtained after treatment well
Polarizing coating manufacture device.
The present inventor etc. recognized, obtain after treatment inclined is being calculated based on the conveying capacity of polyvinyl alcohol resin film
In the case of the predicted value of the length of vibrating diaphragm, the precision of predicted value is according to the test position of the conveying capacity of polyvinyl alcohol resin film
It is different and different, resulting in the utility model.The utility model provides the manufacture device of polarizing coating as shown below.
[1] a kind of manufacture device of polarizing coating, its conveys polyvinyl alcohol resin film while to the polyethenol series
Resin film is handled and obtains polarizing coating,
The manufacture device of the polarizing coating is characterised by possessing：
Driven roller, it conveys the polyvinyl alcohol resin film；
Test section, it detects the rotation amount of the driven roller；And
Processing unit, it makes the polyvinyl alcohol resin film contact and enter to the polyvinyl alcohol resin film with treatment fluid
Row processing,
The driven roller be configured at than the processing unit lean on upstream side position, and be configured at from the driven roller with
The position that the contact of the polyvinyl alcohol resin film terminates plays the polyvinyl alcohol resin film and the treatment fluid is initial
The position that transport road length untill the position of contact is below 20m.
[2] according to the manufacture device of the polarizing coating described in [1], it is characterised in that be also equipped with the first calculating section, first calculation
Go out the conveying capacity that portion calculates the polyvinyl alcohol resin film conveyed to the processing unit based on the rotation amount.
[3] manufacture device of the polarizing coating according to [2], it is characterised in that the processing of the processing unit is included institute
Polyvinyl alcohol resin film is stated to handle along the extension that conveying direction extends,
The manufacture device of the polarizing coating is also equipped with the second calculating section, and second calculating section is prolonged based on the extension processing
Multiplying power and the conveying capacity calculated by first calculating section are stretched, to calculate the length of the polarizing coating.
[4] manufacture device of the polarizing coating according to [1] or [2], it is characterised in that the driven roller is configured at from institute
State the position that the contact with the polyvinyl alcohol resin film in driven roller terminates and play the poly- second in the processing unit
The position that transport road length untill the position that enol resin film is initially contacted with the treatment fluid is below 10m.
[5] manufacture device of the polarizing coating according to [1] or [2], it is characterised in that the driven roller is configured at from institute
State the position that the contact with the polyvinyl alcohol resin film in driven roller terminates and play the poly- second in the processing unit
The position that transport road length untill the position that enol resin film is initially contacted with the treatment fluid is more than 0.5m.
[6] manufacture device of the polarizing coating according to [1] or [2], it is characterised in that be also equipped with damping portion, the damping
Portion is configured at the upstream side of the driven roller, the moisture rate for adjusting the polyvinyl alcohol resin film.
[7] manufacture device of the polarizing coating according to [6], it is characterised in that the damping portion reduces the polyethylene
The moisture rate of alcohol resin film.
[8] according to the manufacture device of the polarizing coating described in [1] or [2], it is characterised in that the driven roller be niproll or
Adsorption roller.
[9] manufacture device of the polarizing coating according to [1] or [2], it is characterised in that described poly- in the driven roller
The cornerite of vinyl alcohol resin film is more than 10 ° and less than 180 °.
[10] manufacture device of the polarizing coating according to [9], it is characterised in that the polyethylene in the driven roller
The cornerite of alcohol resin film is more than 30 ° and less than 180 °.
[11] manufacture device of the polarizing coating according to [10], it is characterised in that the poly- second in the driven roller
The cornerite of enol resin film is more than 45 ° and less than 180 °.
[12] manufacture device of the polarizing coating according to [1] or [2], it is characterised in that the processing unit at least includes
What is configured successively from the upstream side of the conveying direction of the polyvinyl alcohol resin film is swelled bath, dye bath and crosslinking bath.
[13] manufacture device of the polarizing coating according to [1] or [2], it is characterised in that the polyvinyl alcohol resin
Film is monofilm or multilayer film.
Utility model effect
According to the manufacture device of polarizing coating of the present utility model, can precision calculate the polarization obtained after treatment well
The length of film.
Brief description of the drawings
Fig. 1 is the sectional view of one of the manufacture device for schematically showing polarizing coating of the present utility model.
Fig. 2 is the sectional view for the wrap angle sigma for representing the film on niproll.
Fig. 3 is the sectional view for the cornerite β for representing the film on adsorption roller.
Description of reference numerals：
The 10 blank films being made up of polyvinyl alcohol resin, 11 blanks volume, 13 are swelled bath, 15 dye baths, 17 crosslinking baths, 19
Cleaner bath, 21 drying ovens, 23 polarizing coatings, 30,31,32,33,34,35,36,37,38,39,40,41,60,61 rollers, 50,51,
52nd, 53,54,55 rollers (niproll), 71 test sections, 72 damping portions, 81 niprolls, 82 adsorption rollers.
Embodiment
[manufacture device of polarizing coating]
The manufacture device of polarizing coating of the present utility model is to convey polyvinyl alcohol resin film while to polyvinyl alcohol
Resin film is handled and obtained the manufacture device of the polarizing coating of polarizing coating.The manufacture device tool of polarizing coating of the present utility model
It is standby：Driven roller, it conveys polyvinyl alcohol resin film；Test section, it detects the rotation amount of driven roller；And processing unit, it makes
Polyvinyl alcohol resin film contacts with treatment fluid and polyvinyl alcohol resin film is handled.The driven roller is configured at than institute
State processing unit and lean on the position of upstream side, and be configured at from the contact knot with the polyvinyl alcohol resin film in the driven roller
Transport road length untill the position that the polyvinyl alcohol resin film is initially contacted with the treatment fluid is played in the position of beam is
Below 20m, preferably below 10m position.Hereinafter, reference picture 1 illustrates the manufacture device of polarizing coating of the present utility model
One embodiment.
Fig. 1 is the sectional view of the manufacture device for the polarizing coating for schematically showing present embodiment.Polarizing coating shown in Fig. 1
The one side of manufacture device 1 continuously roll out polyvinyl alcohol resin film (following, be also simply referred to as " film ") 10 on one side from blank volume 11
Conveyed along transport path, and carry out various processing to manufacture polarizing coating 23 by processing unit on transport path.In processing unit
Processing comprising making the processing that film 10 is contacted with treatment fluid.Arrow in Fig. 1 represents the conveying direction of film 10.Pass through manufacture device
The manufacture device that 1 obtained polarizing coating 23 is for example transferred directly to next polarization plates (is pasted in the single or double of polarizing coating 23
Close the device of diaphragm).
In manufacture device 1, the transport path conveyed by multiple roller structure pair of films comprising driven roller, in transport road
The test section 71 of the processing unit for implementing processing to the film conveyed and the rotation amount of detection driven roller is provided with footpath.
<Processing unit>
Processing unit possesses successively from the upstream side of transport path is swelled bath 13, dye bath 15, crosslinking bath 17 and cleaning
Various processing baths and drying oven 21 as bath 19.In this manual, processing unit possesses in upstream-most position is swelled bath
13, and damping portion 72 described later is not included in processing unit.Various processing baths contain treatment fluid in treatment trough.Be swelled bath 13 by
The swelling solution composition for being swelled groove is contained in, swelling treatment is implemented to impregnated film 10 at this.Dye bath 15 is by being contained in dyeing
The dyeing liquor of groove is constituted, and dyeing processing is carried out to impregnated film 10 at this.Crosslinking bath 17 is crosslinked the crosslinked fluid of groove by being contained in
Constitute, crosslinking Treatment is implemented to impregnated film 10 at this.Cleaner bath 19 is made up of the cleaning fluid for being contained in rinse bath, right at this
Impregnated film 10 implements cleaning treatment.Drying process is implemented to film 10 in drying oven 21.
Fig. 1, which is shown, is swelled the example that bath 13, dye bath 15, crosslinking bath 17 and cleaner bath 19 are each provided with a groove respectively
Son, but it is also possible to make the processing bathroom facilities more than any one have more than two grooves as needed, can also have others
Processing bath.
<Multiple rollers>
The transport path of manufacture device 1 to multiple rollers that the film 10 conveyed is supported by constituting.Each roller is to being conveyed
Film 10 supported, and following function multiple is undertaken individually or synergistically according to allocation position and species.
I) adjustment of the conveying direction of film 10
Ii the tension force of conveying direction) is applied to film 10
Iii the stretching force of conveying direction) is applied to film 10.
Each roller for being arranged at transport path is driven roller or free roll.In this manual, " driven roller " refers to by motor
The roller for driving and rotating etc. driving source, " free roll " refers to be configured to rotate freely and is not applied driving force from driving source and led to
The roller crossed the film that contacts of conveying and rotated.As driven roller, niproll, adsorption roller (suction can be exemplified
roll).Niproll is made up of a pair of rolls, and at least one party in a pair of rolls is the roller for being driven by driving sources such as motors and being rotated.Inhale
Attached roller is such as lower roll：There are multiple suction holes in the side face of outer barrel, the film conveyed is inhaled by the air-breathing from the suction hole
Invest roller surface and keep conveying and while rotate outer barrel, thus come to apply tension force to film.In the case where roller is driven roller,
Can undertake it is above-mentioned i)~iii) function.It should be noted that except can undertake it is above-mentioned i)~iii) function in addition to,
It can also apply pressing force along the thickness direction of film 10 in the case of using niproll, can also edge in the case of adsorption roller
The thickness direction for film 10 applies absorption affinity.In the case where roller is free roll, above-mentioned function i) can be undertaken, but do not undertake
Above-mentioned ii), iii) function.
As the material of roller, it is not particularly limited, metal, rubber etc. can be illustrated.As the mother metal of metallic roll, it can use each
Material known to kind, preferably SUS304 more preferably implements chromium plating process on surface.The material of rubber rollers is not particularly limited, but
EPDM, NBR, polyurethane, TITAN, silicon etc. can be enumerated.For niproll, the material of a pair of rolls can be identical material, can also
It is material not of the same race.
Roller 30~41,50~55,60,61 is configured with the transport path of manufacture device 1.Roller 50~55 is niproll, by
Niproll before or after being configured at each processing bath applies tension force to film 10, carries out to the importing of each processing bath or from each processing
The extraction of bath.In addition, week speed difference can be set to carry out list in processing bath between the niproll being configured at before and after processing bath
Axle extends.In processing unit, preferably uniaxial extension processing is carried out at least any processing bath.
In manufacture device 1, the roller 30,31,33,34,36,37,39,40 being configured in processing bath is free roll, roller 60,
61st, 32,35,38,41 can be free roll or driven roller.
In manufacture device 1, it is provided with and applies the tension force for rolling out direction to film 10 and roll out roller, film 10 is rolled up from blank
11 continuously roll out.Roller is rolled out to be arranged in rolling up 11 downstreams and than driving of the processing unit by the position of upstream side than blank
Roller.In the manufacture device 1 shown in Fig. 1, any roller being configured in the roller 60,61,50 of the position is to roll out roller.Can be with
Be, as driven roller roller 50 as roll out roller play a role or, a side in roller 60 or roller 61 for driven roller and
It plays a role as roller is rolled out.Manufacture device 1 can be also equipped with tension force applying unit, and the tension force applying unit from blank to rolling up 11
The film rolled out applies the tension force with rolling out direction in opposite direction.What tension force applying unit for example can apply and roll out to blank volume 11
The power of direction of rotation opposite direction.By tension force applying unit, the control for rolling out tension force of film becomes to be more prone to.
<Test section>
Manufacture device 1 possesses test section 71, the test section 71 detection be configured at transport path and meet following condition a),
B) rotation amount of at least one driven roller.It should be noted that being configured with least one in transport path meets following bar
Part a), driven roller b).
A) position that upstream side is leaned on than processing unit is configured at,
B) positions of the transport road length L1 for below 20m, preferably below 10m is configured at, wherein, transport road length refers to
The position P1 terminated from the contact with polyvinyl alcohol resin film in driven roller plays polyvinyl alcohol resin film and treatment fluid
Length untill the position P2 initially contacted.
Hereinafter, it will detect that the driven roller of rotation amount is set to " detection driven roller " by test section.In fig. 1 it is shown that roller
50 be the situation of detection driven roller.Roller 50 meets condition a), in addition, meeting what is terminated from the contact of polyvinyl alcohol resin film
Transport road length L1 untill position P1 to the position P2 that polyvinyl alcohol resin film and treatment fluid are initially contacted is below 20m,
Preferably below 10m, meets condition b).Manufacture device 1 is also equipped with the first calculating section (not shown), based on being detected by test section 71
To rotation amount calculate conveying capacity of the detection driven roller to polyvinyl alcohol resin film.
By using the driven roller for meeting condition a) as detection driven roller, the place carried out in processing unit can be obtained
The conveying capacity of polyvinyl alcohol resin film before reason.Moreover, by using the driven roller for meeting condition b), can obtain for
The conveying capacity of useful polyvinyl alcohol resin film for the length of polarizing coating after high-precision forecast processing.Polarization after processing
The predicted value of the length of film can be multiplied by processing unit by the conveying capacity for making to obtain via the calculating section of test section 71 and first
The extension ratio of middle setting is obtained.For manufacture device 1, in the case where processing unit carries out extension processing, preferably it is also equipped with
Second calculating section (not shown), second calculating section makes via test section 71 and the first conveying capacity for calculating and obtaining as described above
The extension ratio set in processing unit is multiplied by, to obtain the length (predicted value) of the polarizing coating after processing.If can be passed through
Two calculating sections obtain high-precision predicted value, then can predict and be filled in manufacture by the way that the predicted value and measured value are compared
Put the possibility of interior generation problem.If, can be pre- by this in addition, high-precision predicted value can be obtained by the second calculating section
Measured value is used for replacing measured value, can briefly constitute manufacture device.
, sometimes can not be based on use driven roller if only meeting condition a) as the driven roller for the benchmark for obtaining conveying capacity
The conveying capacity that detection limit is calculated come accurately predict processing after polarizing coating length.As its reason, it is envisioned that be because
For polyvinyl alcohol resin film size easily because being changed being swelled caused by moisture, the suction of polyvinyl alcohol resin film in addition
Moist height, if therefore from transport road length of the position of driven roller untill processing unit be the length more than to a certain degree, water
The influence of the variation of point rate becomes notable.On this point, if considering moisture rate in the length of the polarizing coating after prediction is handled
The influence of variation then has no problem, but material and thickness of the influence because of polyvinyl alcohol resin film, the temperature of the variation of moisture rate
Degree etc. and it is different, it is difficult to the accurate influence for considering to change.
Above-mentioned condition a) and the transport road length L1 in above-mentioned condition b) is 0 above is synonymous.Above-mentioned condition b) is more preferably
It is the following condition b ' after further limit)：
It is replaced into b ')：Be configured at transport road length L1 for more than 0.5m and below 20m, be preferably more than 0.5m and 10m with
Under position, wherein, transport road length refer to from driven roller the contact with polyvinyl alcohol resin film terminate position P1
Play the length untill the position P2 that polyvinyl alcohol resin film is initially contacted with treatment fluid.
Manufacture device 1 preferably also possesses damping portion 72 in the position than detection driven roller by upstream side, the damping portion 72
Adjust the moisture rate of polyvinyl alcohol resin film.Because, as described above, the size of polyvinyl alcohol resin film is easily because of water
Being swelled and changing caused by point, therefore pass through the polyethenol series by desired moisture rate is adjusted at damping portion 72
Resin film is guided to detection with driven roller, thus, it is possible to obtain the few conveying of deviation via the calculating section of test section 71 and first
Amount.As long as damping portion 72 carries out what is adjusted in the way of the moisture rate of polyvinyl alcohol resin film is in desired scope
Processing, is not limited, and can be the damping portion for reducing moisture rate (processing is dried) or the rate that moisturizes
The damping portion of (carry out humidification process).
In damping portion 72, so that the moisture rate of polyvinyl alcohol resin film is preferably more than 0.5 weight % and 10 weights
Amount below %, more preferably more than 1.5 weight % and below 5 weight % mode are adjusted to polyvinyl alcohol resin film
Wet process.In the case where the moisture rate of polyvinyl alcohol resin film is more than 0.5 weight % and below 10 weight %, in the model
The variation for enclosing interior length is small, and film is less likely to occur to skid in detection with the surface of driven roller, additionally is able to suppress the fluctuating of end
Generation, therefore preferably.In the case of generating fluctuating in the end of film, film is with detecting the contact surface contacted with driving roller surface
Product diminishes, and occurs the skidding of film in roller surface sometimes.In order to form the moisture rate in above-mentioned number range, carried out in damping portion 72
Drying process or humidification process.
In the case of withering by damping portion 72, damping portion 72 is, for example, drying oven.Drying in drying oven
Processing can be carried out by air drier drying, by contact with hot-rolling progress drying, by FAR INFRARED HEATING
Drying that device is carried out etc..In the case where carrying out humidification process by damping portion 72, damping portion 72 is, for example, to humidify stove.Humidify stove
It is preferably capable of controlling the humidification stove of the relative humidity in stove, more preferably can also controls the humidification stove of in-furnace temperature.Humidification
Stove is, for example, that in-furnace temperature can be improved by supply of hot blast etc. and can adjust to control in stove by the moisture in stove
Relative humidity baking box.
The preferred disposition of damping portion 72 in transport road length be below 10m position, wherein, transport road length refers to from poly- second
Play polyvinyl alcohol resin film and start what is contacted with detection driven roller in position derived from enol resin film self-regulated wet end 72
Length untill position.Because, by being configured at the position, easily by polyvinyl alcohol resin of the detection at driven roller
The moisture rate of film is adjusted to be in desired number range.
, can be via the calculating section of test section 71 and first with high accuracy acquirement conveying capacity in manufacture device 1, this is also helped
In can precision calculate the length of the polarizing coating obtained after treatment well.Because, rotation amount is detected by test section 71
Detection object be driven roller, because driven roller film 10 is applied it is tensioned make film 10 be not easy to skid in roller surface, because
The rotation amount of this detection driven roller and the conveying capacity of film are accurately consistent.Moreover, being niproll or adsorption roller in driven roller
In the case of, pressing force or absorption affinity also are applied along its thickness direction to film 10 in addition to it can apply tension force to film 10,
Skidded therefore, it is possible to further suppress film 10 in roller surface, the conveying capacity of higher precision can be obtained.
In the case of using niproll, in order to further suppress film 10 in niproll slippery surface, preferably appropriate selection
Crimp pressure.It is preferably 0.2~3.0MPa to crimp pressure, more preferably 0.5~2.3MPa.
In addition, for detection driven roller, skidded to further suppress film 10 in roller surface, preferably appropriate adjustment bag
Angle.Cornerite refers to the central angle in the region that film 10 is contacted in roller surface.Fig. 2 is the cornerite for representing the film 10 on niproll 81
α sectional view.Fig. 3 is the sectional view for the cornerite β for representing the film 10 on adsorption roller 82.The cornerite of film 10 in detection driven roller
Preferably more than 10 ° and less than 180 °, more preferably more than 30 ° and less than 180 °, more preferably more than 45 ° and 180 ° with
Under.It is more than 10 ° and less than 180 ° by cornerite, can further suppresses skidding of the film 10 on the surface of detection driven roller.
As the test section of the rotation amount of detection detection driven roller, as long as the inspection of the rotation amount for driven roller can be detected
Survey portion is then not limited, and can exemplify such as rotary encoder.Rotary encoder is by optical profile type, magnetic-type, electromagnetic coupled formula
Deng Cleaning Principle come the rotary encoder of the rotation amount of detection driven roller, it can enumerate and be directly mounted at detection driven roller
Contact rotary encoder and only rotate element be installed on detection with driven roller encoder main body be configured at it is separated
The contactless rotary encoder of position.As rotary encoder, preferably use to be contactless and by same with contact
The Cleaning Principle of sample detects the rotary encoder of rotation amount.
It is detection driven roller that roller 50 is shown a case that in Fig. 1, but is not limited to this, as long as to meet above-mentioned condition
A), driven roller b) can then be configured to detection driven roller.Hereinafter, the place in blank film, polarization plates and processing bath is illustrated
Manage content.
(polyvinyl alcohol resin film)
The parent material (blank film) that is manufactured as polarizing coating is as long as and the polyvinyl alcohol resin film that uses is at least to have
The film of standby polyvinyl alcohol resin layer, can be that monofilm can also be multilayer film.
The polyvinyl alcohol resin of polyvinyl alcohol resin layer is constituted generally by being carried out to polyvinyl acetate system resin
Saponification and obtain.Its saponification degree ordinarily be about 85 moles of more than %, preferably about 90 moles more than %, and more preferably about 99 rub
You are more than %.Polyvinyl acetate system resin for example in addition to being the homopolymer i.e. polyvinyl acetate of vinyl acetate,
The copolymer of other monomers etc. that can be vinyl acetate and can be copolymerized therewith.It is used as the other monomers for being capable of copolymerization, example
Unsaturated carboxylic acid class, olefines, vinyl ethers, unsaturated sulfonic acid class can such as be enumerated.The degree of polymerization of polyvinyl alcohol resin
It ordinarily be about 1000~10000, preferably about 1500~5000 or so.
These polyvinyl alcohol resins can be modified, for example, can use with the modified polyvinyl alcohol contracting first of aldehydes
Aldehyde, polyvinyl acetal, polyvinyl butyral resin etc..
As blank film, can for example use thickness for less than 65 μm (are, for example, less than 60 μm), preferably less than 50 μm,
More preferably less than 35 μm, more preferably less than 30 μm of the individual layer being made up of the polyvinyl alcohol resin layer not extended
Polyvinyl alcohol resin film.Thereby, it is possible to obtain the polarizing coating as film that market demands are increasingly improved.Blank film can also
It is the polyvinyl alcohol resin film for implementing the individual layer after the extension that extension is handled in the gas phase in advance.Blank film can also be tool
There are substrate layer and the polyvinyl alcohol resin layer formed by solution of the coating comprising polyvinyl alcohol resin on substrate layer
The polyvinyl alcohol resin film of multilayer.The polyvinyl alcohol with the polyvinyl alcohol resin layer not extended is being used as blank film
In the case of resin film, extension processing is carried out in the processing unit of manufacture device 1.Using with the polyvinyl alcohol extended
In the case of the polyvinyl alcohol resin film of resin, can further it be extended in the processing unit of manufacture device 1
Processing, can also be handled without extension.
Blank film 10 is prepared as the volume (blank volume) 11 of the polyvinyl alcohol resin film of strip.The width of blank film 10
Degree is not particularly limited, for example, can be 400~6000mm or so.The length of blank film 10 in the blank volume 11 of preparation is not special
Limitation, for example, can be 5000~50000m or so.
(polarization plates)
The polarizing coating manufactured by Fig. 1 manufacture device, which possesses, makes dichroism pigment (iodine, dichroic dye) be adsorbed in list
Polarizer layer obtained from polyvinyl alcohol resin layer and orientation after axle extension.It can be passed through by least one side in polarizing coating
Polarization plates are obtained by bonding agent laminating diaphragm.As diaphragm, for example, it can enumerate：It is fine by triacetyl cellulose, diacetyl
The film that the such acetyl fibre prime system resin of dimension element is constituted；By polyethylene terephthalate, PEN
And the film that polyester based resin as polybutylene terephthalate (PBT) is constituted；Polycarbonate-based resin film, cyclic olefine tree
Adipose membrane；Acrylic resin film；The film being made up of the chain olefin system resin of polypropylene-based resin.
In order to improve the cementability of polarizing coating and diaphragm, the binding face of polarizing coating and/or diaphragm can also be implemented
Sided corona treatment, flame treatment, corona treatment, ultraviolet irradiation, primary coat processing, saponification process etc. are surface-treated.As inclined
Bonding agent used in the fitting of vibrating diaphragm and diaphragm, can enumerate active energy line curing as ultra-violet solidified bonding agent
Property bonding agent, the aqueous solution of polyvinyl alcohol resin or be incorporated the aqueous solution of crosslinking agent, carbamate system emulsion to it
Water system bonding agent as bonding agent.Ultraviolet hardening bonding agent can be that acrylic compounds polymerize with optical free radical and drawn
Send out mixture of mixture, epoxide and light cationic polymerization initiator of agent etc..Alternatively, it is also possible in the lump using sun from
The epoxide of sub- polymerism and free-radical polymerised acrylic compounds, light cation is used as initiator in the lump
Polymerization initiator and optical free radical polymerization initiator.
(swelling treatment)
In bath 13 is swelled, swelling treatment is carried out.Swelling treatment is removed for the foreign matter on the surface of blank film 10, blank film 10
In the purpose such as plasticizer removing, chromatophil imparting, the plasticized of blank film 10 and carry out.Treatment conditions can reach
Determined in the range of in the range of the purpose and a problem that the excessive dissolving of blank film 10, devitrification will not be produced.
Reference picture 1, swelling treatment can be implemented in the following way：Make to soak from the blank films 10 that blank volume 11 is continuously rolled out
Next stain draws blank film 10 in being swelled 13 stipulated times of bath.It is pure except that can use as the swelling solution for being swelled bath 13
Beyond water, addition boric acid (the Japanese Unexamined Patent Publication 10-153709 public affairs in the range of about 0.01~10 weight % can also be used
Report), chloride (Japanese Unexamined Patent Publication 06-281816 publications), inorganic acid, inorganic salts, water-miscible organic solvent, alcohols etc. form
The aqueous solution.
The temperature for being swelled bath 13 is, for example, 10~50 DEG C or so, preferably 10~40 DEG C or so, more preferably 15~30 DEG C
Left and right.The dip time of blank film 10 is preferably 10~300 seconds or so, more preferably 20~200 seconds or so.In addition, in blank
In the case that film 10 is the polyvinyl alcohol resin film after extending in advance in gas, the temperature for being swelled bath 13 is, for example, 20~70
DEG C or so, preferably 30~60 DEG C or so.The dip time of blank film 10 is preferably 30~300 seconds or so, more preferably 60~
240 seconds or so.
In swelling treatment, easily produce blank film 10 along width be swelled and cause fold to enter film this is asked
Topic.As a method for being conveyed while the fold is removed to film, following method can be enumerated：Roller 30,31 and/
Or 32 pressed from both sides using the such roller with expanding function of spreader roll, propellers, crowned roll, or using guide, curved rod, stent
Other such broadening devices.It is to implement extension processing for suppressing corrugated another method.For example, it is possible to use be used as clamping
The roller 50 of roller implements uniaxial extension processing with all speed differences of roller 51 in bath 13 is swelled.
In swelling treatment, because film also along the conveying direction of film is swelled expansion, therefore film is not carried out it is positive
In the case of extension, the relaxation on conveying direction in order to eliminate film is for example preferred to use and is swelled to being configured at before and after bath 13
The speed of the roller 50,51 as niproll the method such as be controlled.Stabilized in addition, being conveyed for the film for making to be swelled in bath 13
Purpose, control to be swelled the current in bath 13 in water using spraying or use EPC devices (Edge Position in the lump
Control devices：Detect film end simultaneously prevent the device wriggled of film) etc. be also useful.
In the example depicted in figure 1, roller 32, roller 51 and to dye bath 15 are sequentially passed through from being swelled the film 10 after bath 13 is drawn
Import.
(dyeing processing)
In dye bath 15, dyeing processing is carried out.Dyeing processing, which is in order at, makes dichroism pigment be adsorbed in after swelling treatment
Polyvinyl alcohol resin film and be orientated etc. purpose and carry out.Treatment conditions are in the range of it can reach the purpose and not
Determined in the range of a problem that producing excessive dissolving, the devitrification of film.Reference picture 1, dyeing processing can be in the following way
Implement：Along the film transport path transport membrane built by roller 33~35,52, and by the film immersion after swelling treatment in dye bath 15
(treatment fluid for the being contained in staining trough) stipulated time, then film is drawn.In order to improve the dyeability of dichroism pigment, it is provided
Film to dyeing processing preferably at least implements the film after a certain degree of uniaxial extension processing, or preferably replaces dyeing
The uniaxial extension of before processing handles and the film of uniaxial extension processing or the single shaft except dyeing before processing is carried out when dyeing processing
The film of uniaxial extension processing is also carried out beyond extension processing when dyeing processing.
In the case where using iodine as dichroism pigment, the dyeing liquor of dye bath 15 for example can be with concentration by weight
Than the aqueous solution for being calculated as iodine/KI/water=about 0.003~0.3/ about 0.1~10/100.KI can also be replaced and used
Other iodide such as zinc iodide, can also be in the lump using KI and other iodide.Alternatively, it is also possible to coexist beyond iodide
Compound, such as boric acid, zinc chloride, cobalt chloride.In the case where adding boric acid, comprising on iodine this aspect with friendship described later
Connection processing difference, can if the aqueous solution is containing the aqueous solution more than parts by weight of iodine about 0.003 relative to the parts by weight of water 100
It is regarded as dye bath 15.The temperature of dye bath 15 when being impregnated to film is usually 10~45 DEG C or so, preferably 10~40 DEG C,
More preferably 20~35 DEG C, the dip time of film is usually 30~600 seconds or so, preferably 60~300 seconds.
In the case where using water-soluble dichroic dye as dichroism pigment, the dyeing liquor of dye bath 15 for example can be with
Concentration is calculated as the aqueous solution of dichroic dye/water=about 0.001~0.1/100 by weight.Also may be used in the dye bath 15
So that dyeing assistant etc. coexists, inorganic salts, interfacial agent etc. such as can contain sodium sulphate.Dichroic dye can individually make
With only a kind of dichroic dye, two or more dichroic dyes can also be used in the lump.Dye bath when being impregnated to film
15 temperature is, for example, 20~80 DEG C or so, preferably 30~70 DEG C, and the dip time of film is usually 30~600 seconds or so, excellent
Elect as 60~300 seconds or so.
As described above in dyeing processing, the uniaxial extension of film can be carried out in dye bath 15.The uniaxial extension of film can be with
Carried out using the methods such as week speed difference are set between the roller 51 and roller 52 as niproll being configured at before and after dye bath 15.
It is also in dyeing processing, in order to convey polyvinyl alcohol while the fold of membrane removal is removed in the same manner as swelling treatment
Resin film, roller 33,34 and/or 35 can use the such roller with expanding function of spreader roll, propellers, crowned roll, or
Use guide, curved rod, other such broadening devices of stent folder.It is same with swelling treatment for suppressing corrugated another method
Sample, is to implement extension processing.
In the example depicted in figure 1, the film drawn from dye bath 15 sequentially passes through roller 35,52 and is imported into crosslinking bath 17.
(crosslinking Treatment)
Crosslinking Treatment is carried out in crosslinking bath 17.Crosslinking Treatment is in order at brings resistance to aquation, hue adjustment (anti-using crosslinking
Only film turns blue) etc. purpose and the processing that carries out.Reference picture 1, crosslinking Treatment can be implemented in the following way：Along by roller 36~
38th, the 52 film transport path transport membrane built, and film immersion after dyeing is handled (is contained in the friendship of crosslinking groove in crosslinking bath 17
Join liquid) stipulated time, then film is drawn.
Can contain boric acid e.g., from about 1~10 weight relative to the parts by weight of water 100 as the crosslinked fluid of crosslinking bath 17
The aqueous solution of part.In the case that dichroism pigment of the crosslinked fluid used in dyeing processing is iodine, preferably in addition to boric acid
Also contain iodide, the amount of the iodide can be set to be such as 1~30 parts by weight relative to the parts by weight of water 100.It is used as iodine
Compound, can enumerate KI, zinc iodide etc..Alternatively, it is also possible to which compound beyond iodide, such as zinc chloride, chlorination coexists
Cobalt, zirconium chloride, sodium thiosulfate, potassium sulfite, sodium sulphate etc..
In crosslinking Treatment, concentration and the crosslinking bath of boric acid and iodide can be suitably changed according to its purpose
17 temperature.For example, the purpose of crosslinking Treatment is the resistance to aquation brought using crosslinking, real successively to polyvinyl alcohol resin film
In the case of applying swelling treatment, dyeing processing and crosslinking Treatment, it can be the following aqueous solution that the crosslinking agent of crosslinking bath, which contains liquid,：
The concentration of the aqueous solution is calculated as boric acid/iodide/water=3~10/1~20/100 by weight.As needed, it can also replace
Boric acid and use other crosslinking agents such as glyoxal or glutaraldehyde, can also be in the lump using boric acid and other crosslinking agents.Film is carried out
The temperature of crosslinking bath during dipping is usually 50~70 DEG C or so, preferably 53~65 DEG C, and the dip time of film is usually 10~
600 seconds or so, more preferably preferably 20~300 seconds, 20~200 seconds.In addition, the poly- second extended in advance before to swelling treatment
In the case that enol resin film implements dyeing processing and crosslinking Treatment successively, the temperature of crosslinking bath 17 is usually 50~85 DEG C
Left and right, preferably 55~80 DEG C.
, such as, can in the case where using iodine as dichroism pigment in the crosslinking Treatment for the purpose of hue adjustment
The crosslinking agent for being calculated as boric acid/iodide/water=1~5/3~30/100 by weight with concentration contains liquid.Film is soaked
The temperature of crosslinking bath during stain is usually 10~45 DEG C or so, and the dip time of film is usually 1~300 second or so, preferably 2~
100 seconds.
Crosslinking Treatment can also be carried out repeatedly, generally be carried out 2~5 times.In this case, the group of used each crosslinking bath
As long as into and temperature then can be with identical in above-mentioned scope, can also be different.For bringing resistance to aquation by crosslinking
Crosslinking Treatment and for hue adjustment crosslinking Treatment can also respectively multiple processes carry out.
It can also be implemented by the use of all speed differences of the roller 52 as niproll and roller 53 in crosslinking bath 17 at uniaxial extension
Reason.
It is also in crosslinking Treatment, in order to convey polyvinyl alcohol while the fold of membrane removal is removed in the same manner as swelling treatment
Resin film, roller 36,37 and/or 38 can use the such roller with expanding function of spreader roll, propellers, crowned roll,
Or use guide, curved rod, other such broadening devices of stent folder.For suppressing corrugated another method and swelling treatment
Again it is implementing extension processing.
In the example depicted in figure 1, the film drawn from crosslinking bath 17 sequentially passes through roller 38,53 and is imported into Membrane cleaning bath
19。
(cleaning treatment)
The cleaning treatment of film is carried out in cleaner bath 19.The cleaning treatment of film is attached to polyvinyl alcohol resin for removing
The purpose of the medicaments such as unnecessary boric acid, iodine on film and carry out.Cleaning treatment can for example be carried out in the following way：At crosslinking
Polyvinyl alcohol resin film immersion after reason is mist sprayed Membrane cleaning liquid in cleaner bath 19, or to the film, or uses in the lump
The above method.
Fig. 1 shows a case that polyvinyl alcohol resin film immersion bathing 19 in Membrane cleaning and carries out the example of cleaning treatment
Son.The temperature of Membrane cleaning bath 19 in Membrane cleaning processing is usually 2~40 DEG C or so, and the dip time of film is usually 2~120 seconds
Left and right.
It should be noted that being also to convey polyethenol series for while fold is removed in the cleaning treatment of film
The purpose of resin film, roller 39,40 and/or 41 has expanding function as can using spreader roll, propellers, crowned roll
Roller, or use guide, curved rod, the such other broadening devices of stent folder.Alternatively, it is also possible in the cleaning treatment of film
Implement extension processing to suppress to wrinkle.
(extension processing)
As described above, film 10 during a series of above-mentioned processing (that is, more than any one processing bath it is front and rear and/
Or in the processing bath more than any one), implemented uniaxial extension processing in the way of wet type or dry type sometimes.At uniaxial extension
The specific method of reason for example can be to constitute two niprolls of film transport path (for example, before and after being configured at processing bath
Two niprolls) between all speed differences are set and carries out extension between the roller of longitudinal uniaxial extension, such as specially permit No. 2731813 publication and record
As hot-rolling extension, tentering extension etc., preferably between roller extend.Uniaxial extension processing can be obtained partially from blank film 10
Implement during untill vibrating diaphragm 23 multiple.As described above, extension processing is also beneficial to suppress the corrugation of film.
On the basis of blank film 10, polarizing coating 23 final accumulation extension ratio is poly- for what is do not extended in blank film 10
In the case of vinyl alcohol resin film, usually 4.5~7 times or so, preferably 5~6.5 times.
(drying process)
Processing is dried in drying oven 21.It is preferred that entering to exercise the drying of polyvinyl alcohol resin film after cleaning treatment
Processing.Drying process is not limited to the processing carried out using drying oven.Drying temperature is, for example, 30~100 DEG C or so, is dried
Time is, for example, 30~600 seconds or so.Thickness by the polarizer layer of the polarizing coating 23 obtained with upper type is, for example, about 5~
30 μm or so.
(other processing carried out to polyvinyl alcohol resin film)
In the manufacture device of the polarizing coating shown in Fig. 1, the processing beyond above-mentioned processing can also be carried out.As above-mentioned
Processing beyond processing, can exemplify it is being carried out after crosslinking Treatment, to do not contain boric acid the iodide aqueous solution impregnate
Impregnation process (complementary color processing), to not containing boric acid and the impregnation process (zinc processing) of aqueous solution dipping containing zinc chloride etc.
Deng.
Claims (13)
1. a kind of manufacture device of polarizing coating, its conveys polyvinyl alcohol resin film while to the polyvinyl alcohol resin film
Handled and obtain polarizing coating,
The manufacture device of the polarizing coating is characterised by possessing：
Driven roller, it conveys the polyvinyl alcohol resin film；
Test section, it detects the rotation amount of the driven roller；And
Processing unit, its make the polyvinyl alcohol resin film contacted with treatment fluid and to the polyvinyl alcohol resin film at
Reason,
The driven roller be configured at than the processing unit lean on upstream side position, and be configured at from the driven roller with it is described
Play the polyvinyl alcohol resin film and initially contacted with the treatment fluid in the position that the contact of polyvinyl alcohol resin film terminates
Position untill transport road length be below 20m position.
2. the manufacture device of polarizing coating according to claim 1, it is characterised in that
The manufacture device of the polarizing coating is also equipped with the first calculating section, and first calculating section is based on the rotation amount and calculated to institute
State the conveying capacity of the polyvinyl alcohol resin film of processing unit conveying.
3. the manufacture device of polarizing coating according to claim 2, it is characterised in that
The processing of the processing unit includes handling the polyvinyl alcohol resin film along the extension that conveying direction extends,
The manufacture device of the polarizing coating is also equipped with the second calculating section, extension times of second calculating section based on the extension processing
Rate and the conveying capacity calculated by first calculating section, to calculate the length of the polarizing coating.
4. the manufacture device of polarizing coating according to claim 1 or 2, it is characterised in that
The driven roller is configured at from the position that the contact with the polyvinyl alcohol resin film in the driven roller terminates
Transport road of the polyvinyl alcohol resin film untill the position that the treatment fluid is initially contacted into the processing unit is long
Spend the position for below 10m.
5. the manufacture device of polarizing coating according to claim 1 or 2, it is characterised in that
The driven roller is configured at from the position that the contact with the polyvinyl alcohol resin film in the driven roller terminates
Transport road of the polyvinyl alcohol resin film untill the position that the treatment fluid is initially contacted into the processing unit is long
Spend the position for more than 0.5m.
6. the manufacture device of polarizing coating according to claim 1 or 2, it is characterised in that
The manufacture device of the polarizing coating is also equipped with damping portion, and the damping portion is configured at the upstream side of the driven roller, for adjusting
The moisture rate of the whole polyvinyl alcohol resin film.
7. the manufacture device of polarizing coating according to claim 6, it is characterised in that
The damping portion reduces the moisture rate of the polyvinyl alcohol resin film.
8. the manufacture device of polarizing coating according to claim 1 or 2, it is characterised in that
The driven roller is niproll or adsorption roller.
9. the manufacture device of polarizing coating according to claim 1 or 2, it is characterised in that
The cornerite of the polyvinyl alcohol resin film in the driven roller is more than 10 ° and less than 180 °.
10. the manufacture device of polarizing coating according to claim 9, it is characterised in that
The cornerite of the polyvinyl alcohol resin film in the driven roller is more than 30 ° and less than 180 °.
11. the manufacture device of polarizing coating according to claim 10, it is characterised in that
The cornerite of the polyvinyl alcohol resin film in the driven roller is more than 45 ° and less than 180 °.
12. the manufacture device of polarizing coating according to claim 1 or 2, it is characterised in that
The processing unit is molten at least including what is configured successively from the upstream side of the conveying direction of the polyvinyl alcohol resin film
Swollen bath, dye bath and crosslinking bath.
13. the manufacture device of polarizing coating according to claim 1 or 2, it is characterised in that
The polyvinyl alcohol resin film is monofilm or multilayer film.
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| CN201720168252.4U CN206584067U (en) | 2017-02-23 | 2017-02-23 | The manufacture device of polarizing coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112041715A (en) * | 2019-02-26 | 2020-12-04 | 日东电工株式会社 | Method for manufacturing polarizer, method for manufacturing polarizing film, method for manufacturing laminated polarizing film, method for manufacturing image display panel, and method for manufacturing image display device |
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2017
- 2017-02-23 CN CN201720168252.4U patent/CN206584067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112041715A (en) * | 2019-02-26 | 2020-12-04 | 日东电工株式会社 | Method for manufacturing polarizer, method for manufacturing polarizing film, method for manufacturing laminated polarizing film, method for manufacturing image display panel, and method for manufacturing image display device |
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