CN106068299A

CN106068299A - The scroll of blooming and manufacture method, polaroid and liquid crystal indicator

Info

Publication number: CN106068299A
Application number: CN201580013103.4A
Authority: CN
Inventors: 铃木真郎; 铃木真一郎
Original assignee: Konica Minolta Opto Inc
Current assignee: Konica Minolta Inc; Konica Minolta Opto Inc
Priority date: 2014-03-11
Filing date: 2015-03-11
Publication date: 2016-11-02
Also published as: KR20160119159A; JPWO2015137367A1; WO2015137367A1

Abstract

It is an object of the invention to provide the scroll of the blooming of the increase of a kind of deformation suppressing scroll and suppression mist degree.The scroll of the blooming of the present invention is that the blooming of thickness 15～45 μm by having embossed portion at width both ends winds at the length direction of film and the scroll of blooming that obtains, above-mentioned blooming contains the compound shown in following formula (1) of cellulose esters and 0.05～5 mass %, and the side view at the direction of principal axis both ends of above-mentioned scroll becomes wavy.

Description

The scroll of blooming and manufacture method, polaroid and liquid crystal indicator

Technical field

The present invention relates to scroll and manufacture method, polaroid and the liquid crystal indicator of a kind of blooming.

Background technology

In recent years, liquid crystal indicator is as the demand of the liquid crystal display of the portable equipment such as smart mobile phone, tablet terminal Increase.Such liquid crystal indicator is required slimming, and the blooming such as polaroid protective film constituting it also requires that thin Type.

As polaroid protective film, such as cellulose ester membrane can be used.Such film is generally by solution casting film Method etc. manufacture strip film after, with by this film roll shape be wound in core scroll form preserve.Then, in order to suppress volume Around the skew (winding skew) etc. of film end, form embossed portion at the width both ends of the film of winding.

If however, it is known that be wound on, by usual way, the film that width both ends have the strip of embossed portion, Then scroll is easily deformed.On the other hand, it is proposed that a kind of width at film makes film or core periodically vibrate one The method (vibration winding) (such as patent documentation 1) of limit winding.

Prior art literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2010-150041 publication

Summary of the invention

The present inventor etc. find, particularly when by the film of usual way wound film thickness, scroll is easily deformed.This The deformation of the scroll in invention specifically refers to that the winding diameter at the width both ends of the film that embossed portion overlaps each other is bright Show bigger than the winding diameter of the width central part of film and produce flexure etc in vertical direction big fold.

The deformation of such scroll particularly becomes significant reason when the thickness of blooming is thin may not be clear and definite, but considers As follows.I.e., it is believed that the thickness being because blooming is the thinnest, 1) height of embossed portion becomes relative to the ratio of the thickness of blooming The biggest, the width central part of film becomes much larger with the difference of the winding diameter at width both ends；2) optics film strength The lowest, it is difficult to the deadweight etc. of supporting optical film.

The deformation of such scroll can be by giving vibration as mentioned above while the method wound (vibration winding) be come Improve.

But, in giving the method that vibration winds, owing to making film periodically vibrate at width, because of This, film is each other, particularly embossed portion and the face being not provided with embossed portion easily rub.Its result, exists and is not provided with embossed portion Face is easily subject to trickle damage, and mist degree easily increases such problem.The film that mist degree increases easily makes liquid crystal indicator The display performance such as contrast reduce.

The present invention completes in view of the foregoing, its object is to provide a kind of deformation suppressing scroll and suppression The scroll of the blooming of the increase of mist degree.

[1] scroll of a kind of blooming, is the light of thickness 15～45 μm by having embossed portion at width both ends Learning the scroll of the blooming that film obtains at the length direction winding of film, described blooming contains cellulose esters and relative to described Cellulose esters 100 mass parts is the compound shown in following formula (1) of 0.05～5 mass parts,

R₁-L-R₂…(1)

(in formula (1), L represent ester bond, amido link, carbonyl or by ester bond, amido link or carbonyl with selected from alkylidene, The group of more than one divalents combined in nitrogen-atoms, oxygen atom, sulphur atom, zinc atom, calcium atom and magnesium atom；

R₁Represent alkyl or the thiazolinyl of carbon number 8～26 of carbon number 8～26；

R₂Represent hydrogen atom, the alkyl of carbon number 8～26 or the thiazolinyl of carbon number 8～26)

The side view at the direction of principal axis both ends of described scroll becomes wavy.

[2] according to the scroll of blooming described in [1], wherein, the L of described formula (1) for selected from-C (=O)- O-,-C (=O) NH-,-C (=O)-O-R₃-O-C (=O)-,-C (=O)-NH-R₃-NH-C (=O)- (R₃Alkylidene for carbon number 1～5) ,-C (=O)-O-M-O-C (=O)-(M is that zinc atom, calcium atom or magnesium are former Son) ,-C (=O)-R₄-O-R₄-C (=O)-,-C (=O)-R₄-S-R₄-C (=O)-,-C (=O)-R₄- NH-R₄-C (=O)-(R₄Alkylidene for carbon number 1～5) and-C (=O)-R₅-C (=O)-(R₅For carbon atom The alkylidene of several 1～5) in group.

[3] according to the scroll of the blooming described in [1] or [2], wherein, the R of described formula (1)₁And R₂It is each independently The alkyl of the straight-chain of carbon number 8～26 or the thiazolinyl of the straight-chain of carbon number 8～26.

[4] according to the scroll of the blooming according to any one of [1]～[3], wherein, it is former that the L of described formula (1) contains sulfur Son.

[5] according to the scroll of the blooming according to any one of [1]～[4], wherein, described blooming is possibly together with by fat Race's glycol and aliphatic dicarboxylic acid polycondensation and the aliphatic polyester compound that obtains.

[6] according to the scroll of blooming according to any one of [1]～[5], wherein, by described blooming by following formula (I) definition and be set to Ro (590) to measure the delay in direction in the face that records of wavelength 590nm, will be defined by following formula (II), And the delay of thickness direction recorded to measure wavelength 590nm is when being set to Rth (590), meet | Ro (590) |≤5nm, | Rth (590)|≤5nm。

Formula (I) Ro=(nx-ny) × t (nm)

Formula (II) Rth={ (nx+ny)/2-nz} × t (nm)

(in formula (I) and (II), nx represents that direction refractive index reaches the refraction of maximum slow-axis direction x in the face of film Rate；Ny represents the refractive index in direction and described direction y orthogonal for slow-axis direction x in the face of film；Nz represents the thickness direction z of film Refractive index；T (nm) represents the thickness of film.)

[7] manufacture method of the scroll of a kind of blooming, wherein, including following operation: prepare containing cellulose esters and phase For the compound shown in following formula (1) that described cellulose esters 100 mass parts is 0.05～5 mass parts and in width side The operation of the blooming of the strip of thickness 15～45 μm of embossed portion it is provided with to both ends；And

Described blooming web-like is wound in the operation of core,

Described rolling step includes at least one party in described blooming and described core while at described blooming Width periodically vibrates, and described blooming is wound in the operation of described core.

R₁-L-R₂…(1)

R₂Represent hydrogen atom, the alkyl of carbon number 8～26 or the thiazolinyl of carbon number 8～26.)

[8] a kind of polaroid, wherein, including the blooming obtained by the scroll according to any one of [1]～[6]

[9] a kind of liquid crystal indicator, wherein, including the optics obtained by the scroll according to any one of [1]～[6] Film.

[10] according to liquid crystal indicator described in [9], wherein, the first polaroid, liquid crystal cells, second inclined is included successively Shake sheet and backlight, and described first polaroid includes first polarizer, that be configured at described first polarizer with described liquid crystal list The protecting film F1 in the face of first contrary side and the protecting film in the face of the described liquid crystal cell side being configured at described first polarizer F2, described second polaroid includes second polarizer, is configured at the guarantor in the face of the described liquid crystal cell side of described second polarizer Cuticula F3 and be configured at the protecting film F4 in face of the side contrary with described liquid crystal cells of described second polarizer, described protection At least one party in film F2 and F3 includes described blooming.

[11] according to the liquid crystal indicator described in [10], wherein, described liquid crystal cells is IPS pattern or FFS mode Liquid crystal cells.

[12] according to the liquid crystal indicator according to any one of [9]～[11], wherein, viewing area is diagonally opposed A length of less than 10 inches.

[13] according to the liquid crystal indicator described in [12], wherein, possibly together with rechargeable battery.

According to the present invention, it is possible to provide the scroll of the blooming of the increase of a kind of deformation suppressing scroll and suppression mist degree.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of an example of the scroll of the blooming representing the present invention.

Fig. 2 is the schematic diagram of the example of the cross sectional shape representing embossed portion.

Fig. 3 is the skeleton diagram of the example representing the coiler device used in the rolling step of blooming.

Fig. 4 is the chart for illustrating to vibrate the vibration in rolling step.

Fig. 5 is the general of an example of the analog result of the accumulation embossed height of the width of the scroll representing blooming Sketch map.

Fig. 6 is the schematic diagram of the example representing small-scale liquid crystal device.

Fig. 7 is the chart representing the vibration condition vibrated in embodiment in rolling step.

Detailed description of the invention

As it has been described above, the deformation of the scroll of blooming can pass through the width at this film while making film or core periodically Ground vibration is while the winding (vibration winding) carrying out blooming improves.But, in vibration winding, owing to making blooming at width Degree direction periodically vibrates, and therefore, film rubs each other, and the face not forming embossed portion is easily subject to trickle damage, Mist degree easily increases.

On the other hand, the present inventor etc. finds, by containing the compound shown in formula (1), Ke Yi in blooming It is made to give good sliding to this film with cellulose esters while the most compatible.Thus, finding can be at suppression scroll The increase of the mist degree of blooming is suppressed while deformation.The present invention completes based on such opinion.

That is, the blooming of the present invention preferably comprises the compound shown in cellulose esters and formula (1).

1. blooming

The blooming of the present invention contains the compound shown in cellulose esters and formula (1) as mentioned above.

＜ is about cellulose esters ＞

Cellulose esters is to make at least one party in cellulose and the aliphatic carboxylic acid of carbon number 2～22 and aromatic carboxylic acid The compound carrying out esterification and obtain.

The example of cellulose esters comprises cellulosic triacetate, cellulose diacetate, cellulose propionate, cellulose fourth Acid esters, cellulose acetate propionate, cellulose acetate butyrate, cellulose benzoate, cellulose ethanoate benzoic acid Ester etc..Wherein, the cellulose esters that preferably phase contrast expression power is low, preferred cellulose triacetate.

Total substitution value of the acyl group of cellulose esters is 2.0～about 3.0, preferably 2.5～3.0, more preferably 2.7～ 3.0, more preferably 2.8～2.95.In order to reduce phase contrast expression power, preferably improve total substitution value of acyl group.

The carbon number of acyl group contained in cellulose esters is preferably 2～7, more preferably 2～4.From good in order to obtain Thermostability etc. from the standpoint of, acyl group contained in cellulose esters preferably comprises acetyl group.Taking of the acyl group of carbon number more than 3 It is preferably less than 0.9 for degree, more preferably 0.

The substitution value of the acyl group of cellulose esters can be measured by the method for regulation in ASTM-D817-96.

In order to obtain certain above mechanical strength, the weight average molecular weight of cellulose esters is preferably 5.0 × 10⁴～5.0 × 10⁵, more preferably 1.0 × 10⁵～3.0 × 10⁵, more preferably 1.5 × 10⁵～2.9 × 10⁵.The molecular weight of cellulose esters Distribution (weight average molecular weight Mw/ number-average molecular weight Mn) is preferably 1.0～4.5.

The weight average molecular weight of cellulose esters and molecular weight distribution can be passed through gel permeation chromatography (GPC) and be measured.Measure Condition is as described below.

Solvent: dichloromethane

Post: 3 Shodex K806, K805, K803G (Showa electrician (strain) system) are connected and uses.

Column temperature: 25 DEG C

Sample solution concentration: 0.1 mass %

Detector: RI Model 504 (GL scientific company system)

Pump: L6000 (Hitachi (strain) makes)

Flow: 1.0ml/min

Standard curve: use and utilize polystyrene standard STK standard polystyrene (east Cao (strain) system) Mw=1.0 ×10⁶～5.0 × 10²The standard curve of 13 samples.13 samples select the most at substantially equal intervals.

＜ is about the compound ＞ shown in formula (1)

Compound shown in formula (1) can have the function of the sliding improving film.

R₁-L-R₂…(1)

The L of formula (1) represent at least contain ester bond (-C (=O) O-), amido link (-C (=O) NH-) or carbonyl (- C (=O)-) the group of divalent.These carbonyls compound shown in mutual-through type (1) can give the good parent with cellulose esters And property.Specifically, L represents ester bond, amido link, carbonyl or " ester bond, amido link or carbonyl is former with selected from alkylidene, nitrogen The group of more than one divalents combined in son, oxygen atom, sulphur atom, zinc atom, calcium atom and magnesium atom "；From easily From the standpoint of obtaining the good affinity with cellulose esters, preferably represent " by ester bond, amido link or carbonyl with selected from Asia The base of more than one divalents combined in alkyl, nitrogen-atoms, oxygen atom, sulphur atom, zinc atom, calcium atom and magnesium atom Group ".

" by ester bond, amido link or carbonyl and selected from alkylidene, nitrogen-atoms, oxygen atom, sulphur atom, zinc atom, calcium atom Group with more than one divalents combined in magnesium atom " example comprise-C (=O)-O-R₃-O-C (= O)-,-C (=O)-NH-R₃-NH-C (=O)-(R₃Alkylidene for carbon number 1～5)；-C (=O)-O-M- O-C (=O)-(M is zinc atom, calcium atom or magnesium atom)；-C (=O)-R₄-O-R₄-C (=O)-,-C (=O)- R₄-S-R₄-C (=O)-,-C (=O)-R₄-NH-R₄-C (=O)-(R₄Alkylidene for carbon number 1～5)；With And-C (=O)-R₅-C (=O)-(R₅Alkylidene for carbon number 1～5) etc..Wherein, from the thermal endurance improving blooming From the viewpoint of property, L is preferably the group containing sulphur atom, more preferably-C (=O)-R₄-S-R₄-C (=O)-.

The R of formula (1)₁Represent alkyl or the thiazolinyl of carbon number 8～26 of carbon number 8～26.Good from being readily obtained From the standpoint of good sliding, the carbon number of alkyl and thiazolinyl is more preferably 10～26.Alkyl and thiazolinyl can be straight chain Shape, it is also possible to for branched, from the standpoint of being readily obtained good sliding, preferably straight-chain.

The R of formula (1)₂Represent hydrogen atom, the alkyl of carbon number 8～26 or the thiazolinyl of carbon number 8～26；For terrible Alkyl or the thiazolinyl of carbon number 8～26 to good sliding, preferably carbon number 8～26.Good from being readily obtained Sliding from the standpoint of, the carbon number of alkyl and thiazolinyl is more preferably 10～26.Alkyl and thiazolinyl can be straight-chain, Can also be branched, from the standpoint of being readily obtained good sliding, preferably straight-chain.

R₂During for hydrogen atom ,-LR₂Can be-C (=O) OH ,-C (=O) NH₂Deng.

R₁With R₂Can have the substituent groups such as OH base the most further.It addition, R₁With R₂Can be mutually the same, it is possible to With difference.

The example of the compound shown in formula (1) comprises following compound.

The content of the compound shown in formula (1) is 0.05～5 mass parts preferably with respect to cellulose esters 100 mass parts, More preferably 0.1～3 mass parts.If the content of the compound shown in formula (1) is more than certain, then film can be given sufficiently Sliding.Thus, even if carrying out vibration rolling step described later, it is possible to the increase of the outside mist degree of the film that suppression obtains.Another Aspect, if the content of the compound shown in formula (1) is below certain, then can suppress to lead because blooming the most excessively slides The deformation of the roll-shape caused.

From the standpoint of in order to adjust the plasticity of film, phase contrast etc., the blooming of the present invention can also contain polyesterification Compound.

＜ is about petchem ＞

Petchem is the compound making dicarboxylic acids and glycol carry out polycondensation and obtaining.Dicarboxylic acids can be selected from fat More than one in race's dicarboxylic acids, ester ring type dicarboxylic acids and aromatic dicarboxylic acid.Glycol can be selected from aliphatic diol, alkyl More than one in ether glycol, ester ring type glycol and aromatic diol.Wherein, examine in terms of can being difficult to show phase contrast etc. Consider, preferably make the dicarboxylic acids in aliphatic dicarboxylic acid and ester ring type dicarboxylic acids and selected from aliphatic diol, alkyl ether glycol The petchem carrying out polycondensation with the glycol in ester ring type glycol and obtain；More preferably make aliphatic dicarboxylic acid and aliphatic two The petchem (aliphatic polyester compound) that alcohol carries out polycondensation and obtains.

That is, petchem is preferably represented by formula (2) or (3).

Formula (2):

B₁-(G-A-)mG-B₁

The G of formula (2) represents and is derived from aliphatic diol or the group of alkyl ether glycol.The carbon number of aliphatic diol is excellent Elect 2～12 as.The example of aliphatic diol comprises ethylene glycol, diethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-fourth Glycol, 1,3 butylene glycol, BDO, 1,5-pentane diol, 1,6-hexanediol, 1,5-PD etc., preferably second Glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butanediol, 1,3 butylene glycol, 1,4-butanediol, 1,6-HD.

The carbon number of alkyl ether glycol is preferably 4～12.The example of alkyl ether glycol comprises diethylene glycol, three second two Alcohol, TEG, dipropylene glycol, tripropylene glycol etc..Aliphatic diol or alkyl ether glycol can be respectively one, it is also possible to group Close more than two kinds.

The A of formula (2) represents and is derived from aliphatic dicarboxylic acid or the group of ester ring type dicarboxylic acids.The carbon of aliphatic dicarboxylic acid is former Subnumber is preferably 4～12.The example of aliphatic dicarboxylic acid comprise malonic acid, succinic acid, 1,3-propanedicarboxylic acid, adipic acid, 1,5-pentanedicarboxylic acid., pungent two Acid, Azelaic Acid, decanedioic acid, heneicosane dicarboxylic acid, dodecanedicarboxylic acid etc..Aliphatic dicarboxylic acid or ester ring type dicarboxylic acids can be each From for a kind of, it is also possible to combine more than two kinds.

The B of formula (2)₁Represent and be derived from aliphatic monocarboxylic acid or the group of ester ring type monocarboxylic acid.The carbon of aliphatic monocarboxylic acid Atomic number is preferably 1～12.The example of aliphatic monocarboxylic acid comprises formic acid, acetic acid, propanoic acid, butanoic acid, valeric acid, caproic acid, enanthic acid, pungent Acid, n-nonanoic acid, capric acid, 2-ethyl-hexanecarboxylic acid, hendecanoic acid, lauric acid, tridecanoic acid, myristic acid, pentadecanoic acid, palm fibre Palmitic acid acid, heptadecanoic acid, stearic acid, nonadecylic acid, arachidic acid, behenic acid, lignoceric acid, cerinic acid, carboceric acid, brown coal Satisfied fatty acid, 9-undecylenic acid, oleic acid, sorbic acid, linoleic acid, linolenic acid, the Semen arachidis hypogaeaes four such as acid, melissic acid, lacceroic acid The unsaturated fatty acids etc. such as aenoic acid, from the standpoint of the compatibility with cellulose esters well waits, preferably acetic acid.

From the standpoint of in order to be difficult to show phase contrast etc., the B of formula (2)₁, G and A be the most all without aromatic rings.M represents Repeat number, preferably 1～170.

The example of the petchem shown in formula (2) comprises the compound shown in table 1.

[table 1]

Formula (3):

B₂-(A-G-)nA-B₂

G and A of G and A of formula (3) and formula (2) each in the same manner as define.The B of formula (3)₂Represent and be derived from aliphatic Monohydric alcohol or the group of ester ring type monohydric alcohol.The carbon number of aliphatic monobasic alcohol is preferably 1～12 monohydric alcohols.Aliphatic unitary The example of alcohol comprises methanol, ethanol, propanol, isopropanol etc.；The example of ester ring type monohydric alcohol comprises Hexalin etc..

From the standpoint of in order to be difficult to show phase contrast etc., the B of formula (3)₂, G and A be the most all without aromatic rings.N represents Repeat number, preferably 1～170.

The example of the petchem shown in formula (3) comprises the compound shown in table 2.

[table 2]

	B₂	G	A	Mw
					K10	CH₃O	C₂H₄-O	CO-COO	400
K11	C₂H₅O	C₂H₄-O	CO-C₂H₄-COO	1000
					K12	C₂H₅O	C₄H₈-O	CO-COO	2000
K13	C₂H₅O	C₂H₄-O	CO-COO	10000

From the viewpoint of the compatibility made with cellulose esters is good, weight average molecular weight Mw of petchem is the most permissible It is less than 20000, can be more preferably less than 5000, can be further preferably less than 3000.On the other hand, from suppression masking In the viewpoint such as volatilization of petchem consider, weight average molecular weight Mw of petchem can be more than 400, the most permissible It is more than 700, can be more preferably more than 1000.

From the viewpoint of being easily adjusted the plasticity of film, phase contrast, the content of petchem is preferably with respect to fiber Element ester is 1～45 mass %, more preferably 2～30 mass %, more preferably 5～25 mass %, most preferably 10～20 Quality %.

The blooming of the present invention can contain UV absorbent, plasticizer, stripping auxiliary agent, delustring the most further The various additives such as agent (microgranule), impact reinforcement material.

UV absorbent can be benzotriazole based compound, 2-dihydroxy benaophenonel based compound or phenyl salicylate Based compound etc..Specifically, can enumerate: [2-hydroxyl-3,5-is double for 2-(5-methyl-2-hydroxy phenyl) benzotriazole, 2- (alpha, alpha-dimethylbenzyl) phenyl] triazole such as-2H-benzotriazole, 2-(3,5-di-t-butyl-2-hydroxy phenyl) benzotriazole Class, ESCALOL 567,2-hydroxyl-4-octyloxybenzophenone, 2,2 '-dihydroxy-4-methoxyl group hexichol first The benzophenones such as ketone.

UV absorbent can be commercially available product, its example comprise BASF Japanese firm Tinuvin 109, Tinuvin 171, Tinuvin 234, Tinuvin 326, Tinuvin 327, Tinuvin 328, Tinuvin 928 etc. Tinuvin series or 2,2 '-di-2-ethylhexylphosphine oxide [6-(2H-benzotriazole-2-base)-4-(1,1,3,3-tetramethyl fourth Base) phenol] (molecular weight 659；It is the LA31 of Asahi Denka Co., Ltd. as the example of commercially available product) etc..

Blooming when being configured at the face of liquid crystal cell side of the polarizer (as Fig. 6 described later protecting film 135 (F2) or When 153 (F3) uses), ultraviolet preventing agent is optional, and the content of UV absorbent can be 0 relative to cellulose esters ～0.5 about mass %.On the other hand, when being configured at the face of the side contrary with liquid crystal cells of the polarizer (as aftermentioned The protecting film 133 (F1) of Fig. 6 or 155 (F4) when using), the content of ultraviolet preventing agent can be relative to cellulose esters with matter Amount ratio is calculated as 1ppm～about 5.0%, can be preferably 0.5～about 3.0%.

＜ is about delustering agent ＞

Delustering agent can give further sliding to blooming.Delustering agent can be will not damage the film that obtains transparent Property and there is the microgranule being made up of inorganic compound or organic compound of thermostability at film making process.

The example of the inorganic compound constituting delustering agent comprises silicon dioxide (Silicon stone), titanium dioxide, aluminium oxide, oxidation Zirconium, calcium carbonate, calcium carbonate, Talcum, clay, burn till Kaolin, burn till calcium silicates, afwillite, aluminium silicate, magnesium silicate and phosphorus Acid calcium etc..Wherein, preferably silicon dioxide, zirconium oxide, in order to reduce the increase of the mist degree of the film obtained, more preferably titanium dioxide Silicon.

The concrete example of silicon dioxide include Aerosil 200V, Aerosil R972V, Aerosil R972, R974, R812,200,300, R202, OX50, TT600, NAX50 (be above that Japan Aerosil (strain) makes), Seahostar KEP- 10, Seahostar KEP-30, Seahostar KEP-50 (being Nippon Shokubai Co., Ltd's system above), Sylophobic 100 (Fuji's Silysia systems), Nipseal E220A (Japan's silica industry system), Admafine SO (Admatechs system) Deng.

The shape of particle of delustering agent is amorphous, needle-like, flat or spherical, and from easily making, the transparency of film obtained is good Aspect etc. consider, can be preferably spherical.

Delustering agent can use one, it is also possible to and with more than two kinds.It addition, pass through and use particle diameter, shape (such as needle-like From spherical etc.) different particle, can highly have both the transparency and sliding.

For the size of the particle of delustering agent, if this size is close to the wavelength of visible ray, then light scattering, transparency fall Low, it is therefore preferable that less than the wavelength of visible ray, more preferably less than the 1/2 of the wavelength of visible ray.But, if particle Size is too small, the most sometimes will not show the improvement effect of sliding, therefore, particle be preferably sized to 80～180nm model Enclose.The size of particle refers to the size of agglomerate when the agglomerate that particle is primary particle.When particle is not spherical, particle Size refer to be equivalent to the diameter of a circle of its projected area.

The content of delustering agent can be about 0.05～1.0 mass % relative to cellulose esters, can be preferably 0.1～ 0.8 mass %.

＜ is about physical property ＞ of blooming

(mist degree)

As it has been described above, the blooming of the present invention contains the compound shown in formula (1).Thus, it is possible to improve by vibration The sliding of film when blooming is wound by winding.Thus, can suppress to make film surface be subject to because film rubs each other The increase of the trickle mist degree caused by damage.

That is, the mist degree of blooming is preferably less than 0.5%, and more preferably less than 0.3%.The mist degree of blooming refers to outward Total mist degree that portion's mist degree adds up to internal haze.If the mist degree of blooming is above-mentioned scope, then easily obtain in a display device Good contrast.

The mist degree of blooming can be measured by below step.That is, extract film out from the scroll of blooming, width with Cut out with the size of 4cm × 4cm at 10 at equal intervals, under each comfortable 23 DEG C of 55%RH, carry out damping.The mist degree of the film obtained is Measure according to JIS K-7136 haze meter (scopometer) (model: NDH 2000, Japan's electricity color (strain) system).By obtain The meansigma methods of the measured value of 10 is set to " mist degree ".

The mist degree of blooming can be adjusted according to the kind of compound shown in formula (1), content.In order to reduce mist Degree, preferably makes the R of formula (1)₁With R₂The carbon number of shown alkyl or alkenyl is certain above or is straight-chain.

(delay)

In the face recorded under conditions of measuring wavelength 590nm, 23 DEG C of 55%RH of blooming, the delay Ro in direction is preferred For-10nm～10nm, more preferably-5nm～5nm.Surveying under conditions of measuring wavelength 590nm, 23 DEG C of 55%RH of blooming The delay Rth of the thickness direction obtained is preferably-10nm～10nm, more preferably-5nm～5nm.There is the light of such length of delay Learn the phase retardation film (F2 or F3) etc. that film is suitable as the liquid crystal indicator of such as IPS pattern.Especially by making phase contrast For above-mentioned scope, the contrast of the liquid crystal indicator of IPS pattern, the angle of visual field can be improved.

Postpone the definition of Ro and Rth each free below equation.

Formula (I): Ro=(nx-ny) × d (nm)

Formula (II): Rth={ (nx+ny)/2-nz} × d (nm)

(in formula (I) and (II), nx represents that direction refractive index reaches the refraction of maximum slow-axis direction x in the face of film Rate；

Ny represents the refractive index in direction and above-mentioned direction y orthogonal for slow-axis direction x in the face of film；

Nz represents the refractive index of the thickness direction z of film；

D (nm) represents the thickness of film)

Postpone Ro and Rth to be obtained by such as following method.

1) blooming is carried out under 23 DEG C of 55%RH damping.The flat of the blooming after damping is measured with Abbe refractometer etc. All refractive indexs.

2) measure the light making mensuration wavelength 590nm put down with this film normal to a surface with KOBRA21ADH, prince's measurement (strain) It is incident in the Ro during blooming after damping capablely.

3) using the slow axis in the face of blooming as sloping shaft (rotary shaft), KOBRA21ADH is utilized to measure from relative to this The normal to a surface of film is the length of delay R (θ) during the light of angle (angle of incidence (θ)) the incident mensuration wavelength 590nm of θ.Length of delay R (θ) mensuration can be to carry out 6 points every 10 ° in the range of 0 °～50 ° at θ.In in face, slow axis refers to face, refractive index reaches Maximum axle, it is possible to use KOBRA21ADH confirms.

4) utilize KOBRA21ADH by Ro and R (θ) measured and above-mentioned mean refractive index and thickness calculate nx, ny and Nz, calculates the Rth measured under wavelength 590nm.The mensuration postponed can be carried out under the conditions of 23 DEG C of 55%RH.

(thickness)

From the slimming of polaroid, roll-shape, film mist degree from the viewpoint of, the thickness of blooming is 15～45 μm, excellent Elect 15～28 μm as.

2. the scroll of blooming

The scroll of the blooming of the present invention is to be wound at the length direction of film by the blooming of strip.

Fig. 1 is the schematic diagram of an example of the scroll of the blooming representing the present invention.Fig. 1 (a) represents outside scroll The figure of the example seen；Fig. 1 (b) is to represent the axial partial section view (line A-A sectional view) along Fig. 1 (a).Such as Fig. 1 A, shown in (), the scroll 10 of blooming includes core 11, at winding about and has embossed portion 13A at width both ends The blooming 13 of strip.

In the present invention, at least one party during the width at film makes this film or core vibrates while carrying out optics The winding of film.Therefore, the scroll 10 that obtains include embossed portion 13A after winding will not entirely overlap each other in the way of stacking Part.Thus, the side view at the direction of principal axis both ends of scroll 10 becomes wavy.The side shape at the direction of principal axis both ends of scroll 10 Shape becomes wavy and specifically refers to as shown in Fig. 1 (b), and the shape along the direction of principal axis both ends in the axial cross section of scroll becomes For wavy.

Embossed portion 13A is arranged at the width both ends of blooming 13.The width of embossed portion 13A such as can be relative Overall width in blooming 13 is 0.2～6%, can be preferably 0.3～2%.Specifically, can be 0.5～about 30mm, Can be preferably 5～30mm, can be more preferably 6～20mm.If the width of embossed portion 13A is too small, then there is blooming 13 Transporting will not fully improve or cannot be adequately suppressed the tendency of winding skew.On the other hand, if the width of embossed portion 13A Excessive, then there is the tendency that can tail off as the ratio that blooming utilizes.

The height of the protuberance constituting embossed portion 13A can be the 5～about 60% of the thickness of blooming 13.Specifically, The highly preferred of protuberance constituting embossed portion 13A can be 1.0～10.0 μm, can be more preferably 1.0～6.0 μm.Protuberance Highly refer to the face never forming embossing height to the summit of protuberance.If the height of embossed portion 13A is too low, then having can The winding skew that can cannot be adequately suppressed in scroll.If it addition, embossed portion 13A is too high, then the district that in scroll, embossed portion overlaps Territory easily becomes thicker than the region beyond it.Therefore, even if implementing that above-mentioned vibration rolling step is also possible to cannot be fully The deformation of suppression scroll.

Fig. 2 is the schematic diagram of the example of the cross sectional shape representing embossed portion 13A.The example of the cross sectional shape of embossed portion 13A Comprise rectangular-shaped (Fig. 2 (a))；It is formed with the width central part of the embossed portion 13A recess a's lower than width both ends Shape (Fig. 2 (b))；Multiple protuberance b, c, and include that the protuberance b of width central part of embossed portion is than width both ends Shape low for protuberance c (Fig. 2 (c)) etc..So, by reducing the width central part of embossed portion, it is possible to reduce embossed portion The overlap of width central part.Thus, it is believed that the increase of the thickness of the embossed portion of scroll can be reduced, volume can be suppressed further The deformation of body.

The width of blooming 13 can be such as 1000～6000mm, can be preferably 1400～4000mm.Blooming 13 Spooling length can be such as 100～10000m.

3. the manufacture method of the scroll of blooming

The scroll of the blooming of the present invention includes 1) prepare the light at width both ends with the strip of embossed portion Learn film operation and 2) winding blooming operation.And, 2) winding blooming operation preferably include to make blooming and volume At least one party in core is while periodically vibrating while the operation that blooming is wound in core (is shaken at the width of this film Dynamic rolling step).

＜ is about operation ＞ of the blooming preparing strip

The blooming of strip can pass through solution casting method (casting) or melted the tape casting (fusing (melt)) manufactures； From the standpoint of fault in order to reduce striated etc., preferably can pass through solution casting method (casting) and manufacture.

The manufacture method utilizing the blooming of the strip of solution casting method (casting) includes following operation: 1-1) obtain The operation of the rubber cement containing cellulose esters；After 1-2) this rubber cement being cast on supporting mass so that it is be dried and obtain membranoid substance Operation；1-3) the operation that membranoid substance is peeled off from supporting mass；And 1-5) at the width both ends of the membranoid substance peeled off Form the operation of embossed portion；Can be as required at above-mentioned 1-3) and above-mentioned 1-5) between farther include 1-4) stretched film The operation of shape thing.

1-1) dissolution process

Just may be used as long as the organic solvent used in the preparation of rubber cement liquid can fully dissolve above-mentioned each compositions such as cellulose esters To use without limitation.The example of chlorine-based organic solvent comprises dichloromethane.The example of chlorine-free organic solvent comprises acetic acid Methyl ester, ethyl acetate, pentyl acetate, acetone, oxolane, 1,3-dioxa penta ring, 1,4-bis-Alkane, Ketohexamethylene, formic acid Ethyl ester etc..Wherein, preferred dichloromethane.

Rubber cement, in addition to above-mentioned organic solvent, preferably further contains the straight chain of the carbon number 1～4 of 1～40 mass % Or the aliphatic alcohol of branched.By containing aliphatic alcohol, membranoid substance gelation, becoming easy from the stripping of metal support. As the aliphatic alcohol of the straight or branched of carbon number 1～4, including methanol, ethanol, normal propyl alcohol, isopropanol, n-butyl alcohol, Sec-butyl alcohol, the tert-butyl alcohol etc..Wherein, from the stability of rubber cement, from the standpoint of boiling point is relatively low, drying property is the best etc., preferably first Alcohol, ethanol.

Method, the method carried out below the boiling point of main solvent that being dissolved with of cellulose esters etc. is carried out at normal pressure, leading The boiling point pressurization carried out above of solvent and the method etc. that carries out, but particularly preferably enter in the boiling point pressurization carried out above of main solvent The method of row.

1-2) curtain coating operation

By rubber cement liquid by liquid-feeding pump (such as, pressing type quantitative gear pump) liquor charging to the die head that pressurizes.Then, from compression molding The slit of head is the stream of (metal roller etc. of such as stainless steel band or rotation) in the metal support of the annular of unlimited transfer Prolong position curtain coating rubber cement liquid.

1-3) solvent evaporation stripping process

Curtain coating rubber cement liquid in metal support heat in metal support, make the solvent in rubber cement liquid evaporate and Obtain membranoid substance.

In order to make solvent evaporate, the method from rubber cement liquid level cross air blasting, the back side from supporting mass is had to utilize liquid heat transfer Method, utilize the method etc. that radiant heat conducts heat from surface and the back side, but from the standpoint of drying efficiency is good, preferably back side liquid Body heat transferring method.Particularly when using stainless steel band masking, preferably make the rubber cement liquid in metal support at 40～100 DEG C In the range of atmosphere under be dried.In order to maintain the atmosphere in the range of 40～100 DEG C, preferably to the rubber cement in metal support Liquid level is blown the warm braw of this temperature or is heated by modes such as infrared ray.It addition, when using metal roller to be filmed, The surface temperature preferably making metal roller is-20～10 DEG C, does not make it be dried and peel off on metal roller.

The membranoid substance obtained in metal support is being peeled off position stripping.When using stainless steel band masking, peel off position The temperature of the metal support put is preferably the scope of 10～40 DEG C, the more preferably scope of 11～30 DEG C.It addition, make During by metal roller masking, the temperature of the metal support peeling off position is preferably the scope of-20～10 DEG C.

The residual solvent amount of the membranoid substance in metal support during stripping can be such as the model of 50～120 mass % Enclose.The residual solvent amount of membranoid substance is defined by following formula.

Residual solvent amount (%)=(quality after the heat treated of quality-membranoid substance before the heat treated of membranoid substance)/(film Quality after the heat treated of shape thing) × 100

Heat treated when measuring residual solvent amount represents the heat treated carried out 1 hour at 140 DEG C.

By stripping tension force when metal support and film stripping generally in the range of 196～245N/m, but when peeling off In the case of easily producing fold, preferably peel off with the tension force of below 190N/m, further preferably shell with the tension force of below 80N/m From.

1-4) it is dried stretching process

By the membranoid substance of stripping while conveying is while making it be dried in stenter stretching device, or it is used in dry Multiple roller conveyings it is configured with while being dried in device.Drying means is not particularly limited, it is common that blow the two sides of membranoid substance The method of hot blast.

The dry flatness easily damaging the film obtained drastically, therefore, utilizes being dried preferably at residual solvent of high temperature It is to carry out under conditions of below 8 mass %.In whole drying process, baking temperature is preferably the scope of 40～190 DEG C, more excellent Elect the scope of 40～170 DEG C as.

The membranoid substance obtained after drying can be stretched the most further.The stretching of membranoid substance is preferably at the width of film At least one direction in direction (TD direction), conveying direction (MD direction) or incline direction is carried out；More preferably at width (TD direction) is carried out.When the width (TD direction) of film stretches with conveying direction (MD direction) the two direction, the width of film The stretching of degree direction (TD direction) can gradually be carried out with the stretching of conveying direction (MD direction), it is also possible to carry out simultaneously.

Stretching ratio such as can be 1.01～1.5 times in all directions, preferably can be about 1.01～1.3 times.

When stretching with stenter stretching device, the residual solvent amount of membranoid substance when stenter stretching starts is preferred It is 2～30 mass %.And then, preferably it is dried until the residual solvent amount of membranoid substance becomes below 10 mass %, preferably becomes It is below 5 mass %.The scope that baking temperature is preferably 30～160 DEG C, the scope of more preferably 50～150 DEG C.Stenter mode has Clip stenter, pin stenter etc., but in the present invention, from the viewpoint of productivity ratio, preferably pin stenter.

1-5) embossing formation process

From the standpoint of in order to easily carry out the winding of film that obtains etc., preferably form pressure at the width both ends of film Flower portion.The forming method of embossed portion is not particularly limited, and can enumerate: the rollers such as film pressing embossing ring are formed the side of embossed portion Method, the method etc. of embossed portion of being formed in a non contact fashion.The example of the method forming embossed portion in a non contact fashion can be enumerated: The method that film irradiating laser is formed embossed portion；The method etc. of embossed portion is formed so that ink-jetting style is coated with aqueous material.

＜ is about rolling step ＞

Rolling step preferably include to make blooming with at least one party in core while film width periodically Vibration while being wound in the operation (vibration rolling step) of core by blooming.

Fig. 3 is the skeleton diagram of the example representing the coiler device 20 used in the rolling step of blooming.Fig. 3 A () is to represent the side view in terms of the direction of principal axis of the core 11 of coiler device 20, Fig. 3 (b) is to represent the top from blooming 13 The top view seen.

Coiler device 20 possesses the vibration control apparatus 21 of the vibration for controlling core 11, guides blooming 13 to volume The guide reel 23 of core 11 and pressing are wound in the contact roller 25 of the blooming 13 of core 11.

Core 11 is rotatably arranged by rotary apparatus (not shown).Vibration control apparatus 21 makes blooming giving 13 vibrations changed with the relative position of core 11 and the mode that can control this vibrational state are constituted.

Guide reel 23 is the parts of driven rotation for the traveling along with blooming 13.Thus, by the blooming 13 of coming of advancing Guide to core 11, reduced the shake of the advanced positions of blooming 13 by guide reel 23, can by blooming 13 successfully to Core 11 supplies.

Contact roller 25 is the parts of driven rotation for the rotation along with core 11.Thus, can press and be wound in core 11 Blooming 13 and suppress winding blooming 13 separate from core 11.

In coiler device 20 as constructed as above, with guide reel 23, blooming 13 is guided the surface to core 11.Then, Make core 11 rotate by rotary apparatus (not shown), the blooming 13 guided is wound in core 11.

In the present invention, the rolling step that blooming 13 is wound in core 11 preferably includes to vibrate rolling step.Shaking In dynamic rolling step, the width at blooming 13 gives and makes blooming 13 and shaking that the relative position of core 11 changes Dynamic.Vibration condition can be controlled by vibration control apparatus 21.In Fig. 3 (b), it is shown that make the example that core 11 is vibrated Son, as long as make blooming 13 change with the relative position of the width of the film of core 11 such vibration, can So that blooming 13 vibrates；Blooming 13 can also be made to vibrate with both core 11.

Fig. 4 is the chart for illustrating to vibrate the vibration in rolling step.The x-axis of the chart of Fig. 4 represents and starts to be wound in The cumulative thickness (mm) of the blooming of the winding of the position of the blooming of core.That is, the outermost of the blooming 13 of winding is represented With the distance on the surface of core 11, be equivalent to the cumulative thickness x of blooming 13 in Fig. 3.The y-axis of the chart of Fig. 4 represents optics Distance (blooming 13 and the core 11 of the center of the width of the center of the width of film 13 and core 11 Distance between centers) (mm)；Be equivalent to the distance between centers y in Fig. 3.

Vibration in vibration rolling step can be the sine wave oscillations as shown in the curve 52 of Fig. 4；Can also be The most such rectangular-wave vibration；It can also be such vibration as shown by plot 51.Wherein, from order to make scroll Side be the shape etc. being not easily susceptible to damage from the standpoint of, the most such vibration.Specifically, by table Show that the function of the sine wave oscillations of the amplitude A as shown in curve 52, cycle T is set to a (x)；Would indicate that as shown by curve 53 Such amplitude A, the function of rectangular-wave vibration of cycle T are set to b (x)；By such amplitude A as shown by plot 51, cycle T When the function of vibration is set to f (x), the face that the area ratio preferably surrounded by function f (x) and x-axis is surrounded by function a (x) and x-axis The vibration shown in little such function f (x) of area that long-pending big and ratio is surrounded by function b (x) and x-axis.It addition, do not giving vibration Time, become the function shown in straight line 54 in the x-axis of Fig. 4.

Fig. 5 is the general of an example of the analog result of the accumulation embossed height of the width of the scroll representing blooming Sketch map.The x-axis of Fig. 5 represents the position of the width of the scroll of blooming；Y-axis represents accumulation embossed height.

As it is shown in figure 5, when not giving vibration, become the chart shown in line 57；Entering in the way of becoming function a (x) During row vibration (wherein, when amplitude A is below the width of embossed portion), become the chart shown in line 56；To become function f (x) Mode when vibrating, become the chart shown in line 55.

When not giving vibration, as shown in line 57, embossed portion is in the same position stacking of the width of film, therefore, tired Long-pending embossed height becomes the value of the number of times being multiplied by winding with the height of embossed portion.On the other hand, to become the side of function a (x) When formula gives vibration, as shown in line 56, although the near center location of the amplitude A overlapping vibration of embossed portion becomes big, but with The situation not giving vibration is compared, and can reduce accumulation embossed height.And then, in the way of becoming function f (x), giving vibration Time, the time of staying when absolute value of the y displacement of vibration is big becomes longer, therefore, as shown in line 55, can efficiently reduce scroll In the coincidence of embossed portion.So, even if the long-term preservation of scroll via the blooming of vibration rolling step winding also can be abundant The generation of ground suppression deformation.

Function f (x) can be the cycle T of vibration, the function that periodically changes of amplitude A.Specifically, function f (x) can Think the periodic function that f (x)=f (x+T) sets up；Function f (x) can also be thick along with the accumulation of blooming for the cycle T of vibration Degree x becomes such function that diminishes greatly and slowly；Function f (x) can also be for the amplitude A of vibration along with the cumulative thickness x of blooming Become and become greatly and slowly big such function.

Wherein, from the viewpoint of the scroll of the blooming of the generation being suppressed deformation further, vibration is preferably made Amplitude A becomes greatly and slowly big along with the cumulative thickness of blooming 13 becomes.If thinking, the amplitude of vibration is big, then can suppress pressure further The coincidence in flower portion, can suppress the generation of deformation further.Winding starts owing to the cumulative thickness of blooming is little, be also difficult to generation volume The deformation of body, therefore, even if applying the vibration that amplitude is little also can be adequately suppressed the deformation of scroll.On the other hand, if winding The cumulative thickness of blooming is wound in core along with blooming and becomes big, the most easily produces the deformation of scroll.So, it is believed that During the deformation big, easily generation scroll of the cumulative thickness of the blooming of winding, by the vibration that application amplitude is big, can effectively subtract The coincidence of few embossed portion, can suppress the deformation of scroll further.

Additionally, it is preferred that make the cycle T of vibration reduce greatly and slowly along with the cumulative thickness of blooming becomes.If thinking vibration Cycle is little, then can reduce the load putting on blooming.And, if the cumulative thickness of the blooming of winding is along with winding blooming And become big, the most easily produce the deformation of scroll.So, it is believed that the cumulative thickness at the blooming of winding greatly, easily produces scroll Deformation time, by application cycle little vibration, the load to blooming can be efficiently reduced, the change of scroll can be suppressed further The generation of shape.

The amplitude A of vibration is preferably the 0.1～1.0% of film width, more preferably 0.35～0.70%.Specifically, may be used Think 2～15mm, can be preferably 4～about 10mm.If amplitude A is more than certain, then can reduce embossing overlap each other, hold Easily suppress the deformation of scroll well.If amplitude A is below certain, then the side at the direction of principal axis both ends of scroll will not amplitude wave greatly Dynamic, it is many that the displacement of the film of time per unit will not cross quantitative change, therefore, it is possible to the excess rising of suppression mist degree.

The cycle T of vibration is preferably the 0.2～10% of film width, more preferably 0.3～6%.Specifically, can be 3 ～about 120mm.If cycle T is more than certain, then the side at the direction of principal axis both ends of scroll will not fluctuation, during per unit Between the displacement of film will not to cross quantitative change many, therefore, it is possible to the excess rising of suppression mist degree.If cycle T is below certain, then Easily suppress the deformation of scroll well.

As long as rolling step includes above-mentioned vibration rolling step, rolling step can be all vibration winding work Sequence；Other rolling step can also be farther included.The example of other rolling step include constant dynamic distance between centers y and The operation (non-vibration rolling step) of winding.Non-vibration rolling step can at random combine with vibration rolling step.

Such as, from the standpoint of the deformation that can favorably inhibit scroll, preferably winding start for non-vibration rolling step, Midway is vibration rolling step, winding terminates as non-vibration rolling step.That is, winding starts due to the cumulative thickness of blooming Little, also be difficult to produce scroll deformation, therefore, non-vibration rolling step can be carried out.On the other hand, enter along with the winding of blooming OK, the cumulative thickness of the blooming of winding becomes big, and the scroll of winding is easily deformed.When such situation, by carrying out Vibration rolling step, can efficiently reduce the deterioration of roll-shape.And then, by carrying out non-vibration rolling step in winding end, When extracting blooming out from scroll, can successfully extract blooming out.Such as, if making winding terminate for vibrating rolling step, then to exist When the scroll obtained starts to roll out blooming, sometimes cannot successfully extract out because of the sinuous grade of blooming.On the other hand, logical Cross and make winding terminate for non-vibration rolling step, to start after scroll rolls out blooming from just, can successfully extract optics out Film.

So, the scroll of the blooming of the present invention is via making the width at film of at least one party in blooming and core The most periodically vibration while being wound in the operation (vibration rolling step) of core and obtaining by blooming.Thus, with the most logical The scroll crossing the non-vibration rolling step not making it vibrate and to wind and obtain is compared, and can reduce the overlap of embossed portion, can reduce The width both ends of scroll and the difference of the winding diameter of width central part.Its result, although the blooming of the present invention Thickness the thinnest, it is possible to suppression scroll deformation.By suppressing the deformation of scroll, can suppress because blooming is applied uneven Tension force or thickness become the reduction of uneven caused optical characteristics.

Particularly when blooming contains aliphatic polyester compound, optics film strength is easily reduced, and easily produces volume The deformation of body.Even if in this case, by carrying out above-mentioned vibration rolling step, it is possible to excellently suppress the change of scroll Shape.

It addition, in vibration rolling step, blooming is each other；Particularly embossed portion and the optics face being not provided with embossed portion Friction the most mutually, thus, the blooming face being not provided with embossed portion is vulnerable to damage.On the other hand, due to the light of the present invention Learn film and contain the compound shown in formula (1), therefore, can have good sliding.Thus, though embossed portion be not provided with pressure The optics face in flower portion rubs mutually, and the optics face being not provided with embossed portion is not easy to sustain damage, and can suppress mist degree (outside mist Degree) increase.According to these results, the yield of blooming, polaroid can be improved.

4. polaroid

The polaroid of the present invention includes the polarizer and clamps two protecting film of this polarizer.

＜ is about polarizer ＞

The polarizer is the element that the light of the plane of polarization only making certain orientation passes through, and the polarizer of the representative being currently known is poly- Ethenol system polarizing coating.Polyethenol series polarizing coating has the film making polyvinyl alcohol mesentery dyeing iodine and dyeing dichroic dye Film.

Polyethenol series polarizing coating can be after polyvinyl alcohol mesentery is carried out uniaxial tension, with iodine or dichroic dye Carry out the film (preferably further implementing, with boron compound, the film that durability processes) dyeed；Can also be by polyvinyl alcohol After mesentery iodine or dichroic dye dyeing, the film carrying out uniaxial tension (preferably further implements resistance to boron compound The film that property processes for a long time).

The thickness of the polarizer is preferably 2～30 μm, from order to from the standpoint of by polaroid slimming etc., more preferably 5～ 15μm。

＜ is about protecting film ＞

At least one party in two protecting film of the clamping polarizer is preferably obtained by the scroll of the blooming of the present invention Blooming.The opposing party in two protecting film can also be other protecting film.

The example of other protecting film comprises (methyl) acrylic resin film, polyester film, cellulose ester membrane etc., is preferably fibre Dimension cellulose ester film.Cellulose esters contained in cellulose ester membrane defines in the same manner as cellulose esters contained in above-mentioned blooming, It can be preferably cellulosic triacetate.

In the face that protecting film records under conditions of measuring wavelength 590nm, 23 DEG C of 55%RH, the delay Ro in direction is preferably 0 ～20nm, more preferably 0～10nm.The thickness side recorded under conditions of measuring wavelength 590nm, 23 DEG C of 55%RH of protecting film To delay Rt be preferably 0～80nm, more preferably 0～50nm.

The thickness of other protecting film can be about 10～100 μm, can be preferably 10～80 μm.

The polaroid of the present invention such as can be via the blooming of at least one side bonding agent laminating present invention at the polarizer Operation and obtain.Bonding agent used in laminating can be fully saponified type polyvinyl alcohol water solution (water paste), it is also possible to Active energy ray-curable bonding agent is used to carry out.Suppression polaroid high from the elastic modelling quantity of the bond layer obtained, easy From the standpoint of change in size etc., active energy ray-curable bonding agent is preferably used.

Active energy ray-curable adhesive composite can be the optical free radical aggretion type that make use of optical free radical to be polymerized Compositions, make use of light cationic polymerization light cationic polymerization type compositions or and used optical free radical polymerization and light cation The mixed composition etc. of polymerization.

Optical free radical polymerizable composition can described in Japanese Unexamined Patent Publication 2008-009329 publication with specific ratio It is free-radical polymerised that example comprises containing hydroxyl, the free-radical polymerised compound of carboxyl isopolarity group and not polar functionalities The compositions etc. of compound.Free-radical polymerised compound preferably has the change of the ethylenic unsaturated bond of free redical polymerization Compound.The preferred example of the compound with the ethylenic unsaturated bond of free redical polymerization comprises and has (methyl) acryloyl The compound of base.The example of the compound with (methyl) acryloyl group comprises N-and replaces (methyl) acrylic acid amides system chemical combination Thing, (methyl) acrylate based compound etc..(methyl) acrylic acid amides refers to acrylamide or Methacrylamide.

Light cationic polymerization type compositions can be disclosed such containing (α) in Japan's 2011-028234 publication Cationically polymerizable compound, (β) light cationic polymerization initiators, (γ) show maximum for the light of the wavelength longer than 380nm The photosensitizer absorbed and the compositions etc. of each composition of (δ) naphthalene system photosensitization auxiliary agent.

Such polaroid such as can manufacture via following operation: the surface of blooming is implemented easy bonding process (corona Process, Cement Composite Treated by Plasma etc.) operation；The polarizer is glued with the coat activated energy ray-curable of at least one party in blooming Connect the operation of agent；Operation via the bond layer laminating polarizer obtained with blooming；At the laminating polarizer and blooming The operation that bond layer solidifies is made under state.

5. liquid crystal indicator

The liquid crystal indicator of the present invention includes the first polaroid, liquid crystal cells, the second polaroid and backlight successively.Can So that the polaroid that at least one party is the present invention in the first and second polaroids.The polaroid of the present invention is preferably with the present invention's Blooming becomes the mode of liquid crystal cell side and configures.

Specifically, the first polaroid includes first polarizer, is configured at the contrary with liquid crystal cells of first polarizer The protecting film F1 in the face of side and be configured at the protecting film F2 in face of liquid crystal cell side of first polarizer.Second polaroid includes Second polarizer, be configured at the protecting film F3 in the face of the liquid crystal cell side of second polarizer and be configured at second polarizer and liquid The protecting film F4 in the face of the side that brilliant unit is contrary.At least one party in protecting film F1, F2, F3 and F4；In preferably F2 and F3 At least one party is preferably the blooming obtained by the scroll of the blooming of the present invention.

The liquid crystal indicator of the present invention can be the medium-and-large-sized liquid crystal indicator such as TV, notebook computer；Also may be used Think the small-scale liquid crystal devices such as smart mobile phone.Wherein, from the standpoint of the effect being readily obtained the present invention, liquid crystal display Device is preferably diagonally opposed a length of less than 10 inches of viewing area (not illustrating), is preferably less than 5 inches small-sized Liquid crystal indicator.

Fig. 6 is the schematic diagram of the example representing small-scale liquid crystal device.As shown in Figure 6, small-sized liquid crystal display dress Put 100 and include liquid crystal cells 110, the first polaroid 130 clamping it and the second polaroid 150 and backlight 170；Also wrap Include the protection glass 190 in the face of the visible side being configured at the first polaroid 130, be configured at the first polaroid 130 and liquid crystal cells Touch panel portion between 110 210 and be configured at the rechargeable battery 230 of rear side of backlight 170.

The display pattern of liquid crystal cells 110 can be such as STN, TN, OCB, HAN, VA (MVA, PVA), IPS, FFS Various display patterns such as (Fringe Field Switching), from a wide angle of view wait from the standpoint of, preferably IPS pattern or FFS mode.

First polaroid 130 is configured at the face of the visible side of liquid crystal cells 110；Including first polarizer 131, it is configured at The protecting film 133 (F1) in the face of the side contrary with liquid crystal cells 110 of one polarizer 131 and be configured at first polarizer 131 The protecting film 135 (F2) in face of liquid crystal cells 110 side.Second polaroid 150 is configured at the backlight side of liquid crystal cells 110 Face；Including second polarizer 151, the protecting film 153 (F3) in the face of liquid crystal cells 110 side being configured at second polarizer 151 and It is configured at the protecting film 155 (F4) in the face of the side contrary with liquid crystal cells 110 of second polarizer 151.In figure 6, protection Film 135 (F2) can be containing the blooming obtained by the scroll of the present invention with both 153 (F3).

Touch panel portion 210 is configured at (box mo(u)ld top half (on cell between liquid crystal cells 110 and the first polaroid 130 type)).But, the configuration in touch panel portion 210 is not limited to the pattern shown in Fig. 6, and touch panel portion 210 can one Be arranged at protection glass 190 (protection glass is one-piece type)；Inside (box inner mold (the in of liquid crystal cells 110 can also be arranged at cell type))。

Rechargeable battery 230 can be such as lithium rechargeable battery etc..

As it has been described above, protecting film 135 (F2) can be containing the blooming obtained by the scroll of the present invention with both 153 (F3). Although the thickness of the scroll blooming of the present invention is the thinnest, it is possible to the deformation of suppression scroll.Therefore, can suppress due to because of scroll Deform and blooming is applied uneven tension force, so that blooming shows uneven phase contrast or thickness becomes not The reduction of the most caused display performance.

It addition, in liquid crystal indicator, be typically due to the heat etc. of backlight, easily become high temperature.Particularly such as Fig. 6 institute The rechargeable battery 230 of releasing heat when showing such small-scale liquid crystal device owing to being included in discharge and recharge, and device volume is the least, Therefore, device context easily becomes the high temperature of more than 50 DEG C.In the present invention, the compound shown in formula (1) is by containing further There is sulphur atom, the heat durability of film can be improved.Thus, even if becoming the such small-scale liquid of high temperature of more than 50 DEG C in device In crystal device, protecting film 135 (F2) and 153 (F3) also have good durability, can maintain good display performance.Separately Outward, it is not only the heat when heat of backlight, discharge and recharge, and when using in high temperature environments, from the durability that can improve film Viewpoint considers, the compound shown in preferred formula (1) contains sulphur atom.

Embodiment

Hereinafter, enumerate embodiment and the present invention is specifically illustrated, but the present invention is not limited to these embodiments.

1. the material of blooming

＜ cellulose esters ＞

Cellulosic triacetate (degree of substitution with acetyl group: 2.85, weight average molecular weight Mw:285000)

Compound ＞ shown in ＜ formula (1)

＜ compares and uses compound ＞

[changing 10]

＜ petchem ＞

[table 3]

	B₁	G	A	Mw
					K1	CH₃COO	C₂H₄O	CO-C₄H₈-COO	1000

2. the making of blooming

＜ embodiment 1 ＞

(preparation of microgranule annex solution)

By the microgranule (Aerosil R972V Japan Aerosil (strain) system) of 11 mass parts with the ethanol of 89 mass parts with molten After solving device stirring mixing 50 minutes, make it disperse with Manton-Gaulin and obtain particle dispersion liquid.

Then, dissolving tank puts into the dichloromethane of 99 mass parts, be sufficiently stirred for being slowly added 5 mass parts The particle dispersion liquid of above-mentioned making.The solution obtained is utilized mill in the way of the particle diameter of offspring becomes the size of regulation After the dispersion of broken machine, the Fine Met NF utilizing Japan's essence line (strain) to make filters, and obtains microgranule annex solution.

(preparation of rubber cement liquid)

The microgranule annex solution manufacture obtained is used to have the rubber cement liquid of following shown composition.First, following compositions is thrown Enter to seal container and be heated to 70 DEG C, stirring and make cellulose esters be completely dissolved.The solution obtained is used the long-pending filter of peace The peace that paper (strain) is made is amassed filter paper No.244 and is filtered, and obtains rubber cement liquid.

(composition of rubber cement liquid)

Cellulose esters (cellulosic triacetate of degree of substitution with acetyl group 2.85, Mw:285000): 100 mass parts

Petchem K1:15 mass parts

Compound 1-1 (compound shown in formula (1)): 1 mass parts

Microgranule annex solution: 0.2 mass parts (solid is divided)

Dichloromethane: 475 mass parts

Ethanol: 50 mass parts

The rubber cement liquid obtained use band casting device is cast the stainless steel band at 22 DEG C equably with rubber cement temperature 35 DEG C On supporting mass.Then, make the rubber cement liquid on supporting mass be dried to strippable scope, peel off from stainless steel band supporting mass, Obtain membranoid substance.The residual solvent amount of rubber cement during stripping is 25%.

By the membranoid substance stenter that obtains with stretching ratio 1.01 again in width (TD direction) stretching while It is made to be dried with 120 DEG C.Then, release width keeps, with the conveying of multiple rollers while making it dried, to film with 120 DEG C The annular knurl processing of width 10mm, highly 5 μm is implemented at two ends, makes width 1400mm, the film of thickness 20 μm.

Coiler device as shown in figure 3 is used to make core while at film width the film implementing annular knurl processing obtained Degree direction vibration web-like ground winding on one side, obtains scroll.Specifically, be set to speed 80m/ minute, winding initial stage tension force 140N, Winding terminates tension force 90N, chucking power 20N of contact roller, film 101 is wound 2900m and obtains scroll 101.Vibration rolling step In vibration condition be the cycle T=80mm of function f (x) shown in curve 61 meeting Fig. 7, the condition of amplitude A=5mm (shakes Swing A).The side view at the direction of principal axis both ends of the scroll obtained is wavy.It addition, the curve 62 of Fig. 7 represent cycle T and A with Above-mentioned identical sine wave oscillations.

＜ embodiment 2 ＞

The vibration condition of vibration rolling step is changed to meet the cycle T of function f (x) shown in the curve 51 of Fig. 4= 5mm, the condition (vibration B) of amplitude A=8mm, in addition, obtain the scroll 102 of film similarly to Example 1.

＜ comparative example 1 ＞

Do not make core wind the film that (straight (Straight)) makes quiveringly, in addition, obtain similarly to Example 1 Scroll 103 to film.

＜ comparative example 2 ＞

Without the compound shown in formula (1), in addition, film is made similarly to Example 1.Then, to obtaining The winding of film do not make the straight winding that core vibrates, in addition, obtain the scroll 104 of film similarly to Example 1.

＜ comparative example 3 ＞

Without the compound shown in formula (1), in addition, make film similarly to Example 1, obtain scroll 105.

＜ comparative example 4 ＞

Without the compound shown in formula (1), and the content of the silicon dioxide granule as delustering agent is changed to 2 matter Amount %, in addition, makes film similarly to Example 1, obtains scroll 106.

＜ embodiment 3～6, comparative example 5 ＞

The thickness of the film obtained is changed as shown in table 4, in addition, makes film similarly to Example 1, Obtain scroll 107～111.

＜ embodiment 7 ＞

The content of petchem K1 is changed to 5 mass parts, in addition, makes film similarly to Example 1, obtain Scroll 112.

＜ embodiment 8～12, comparative example 6 ＞

The content of the compound shown in formula (1) is changed as shown in table 4, in addition, same with embodiment 4 Sample ground makes film, obtains scroll 113～118.

＜ comparative example 7 ＞

Without petchem, in addition, make film in the same manner as comparative example 2, obtain scroll 119.

＜ embodiment 13～25, comparative example 8～9 ＞

The kind of the compound shown in formula (1) is changed as shown in table 5, in addition, same with embodiment 1 Sample ground makes film, obtains scroll 120～134.

By embodiment 1～12 and the manufacturing condition of film of comparative example 1～7 be shown in table 4；By embodiment 13～25 and comparative example The manufacturing condition of the film of 8～9 is shown in table 5.

[table 4]

[table 5]

The shape of scroll, the mist degree of film, phase contrast and the heat durability obtained by following method evaluation.

(shape of scroll)

The surface configuration of the scroll that visualization obtains, is evaluated by following benchmark.

◎: unconfirmed to fold on the surface of volume

Zero: the part on the surface of volume confirms weak fold

△: confirm fold, depression in volume whole face, surface

×: having significant shape to deteriorate at volume near surface, whole face confirms fold, depression

××: having significant shape to deteriorate on volume surface, whole face confirms fold, depression, and then shape and is deteriorated to up to The inside of volume

More than △ is judged as the level essentially without problem.

(mist degree)

Film is extracted out, at width to cut out with the size of 4cm × 4cm at 10 at equal intervals, each from the scroll obtained Damping is carried out under 23 DEG C of 55%RH.The mist degree of the film obtained be based on JIS K-7136 haze meter (scopometer) (model: NDH 2000, Japan's electricity color (strain) system) each measure, and obtain this meansigma methods of 10.

◎: haze value is less than 0.3%

Zero: haze value is more than 0.3% and less than 0.4%

△: haze value is more than 0.4% and is less than 0.5%

×: haze value is more than 0.5%

More than △ is judged as the level essentially without problem.

(phase contrast Ro, Rth)

1) extracting film out from the scroll obtained, the film cut out by core in the width direction is carried out under 23 DEG C of 55%RH Damping.The mean refractive index of the film after damping is measured with Abbe refractometer etc..

2) measure the light making mensuration wavelength 590nm put down with this film normal to a surface with KOBRA21ADH, prince's measurement (strain) It is incident in the Ro during film after damping capablely.

3) using the slow axis in the face of film as sloping shaft (rotary shaft), KOBRA21ADH is utilized to measure from the table relative to film The normal in face is the length of delay R (θ) during the light of angle (angle of incidence (θ)) the incident mensuration wavelength 590nm of θ.Length of delay R's (θ) Mensuration can be to carry out 6 points every 10 ° in the range of 0 °～50 ° at θ.The KOBRA21ADH that can utilize in the face of film is carried out really Recognize.

(heat durability)

Film is extracted out from the scroll obtained, at width to cut out with the size of 4cm × 4cm at 10 at equal intervals, will To film preserve 2000 hours in the temperature chamber of 50 DEG C.After film after preserving is with 23 DEG C of 55%RH damping, as described above Ground each measures mist degree, obtains this meansigma methods of 10.Then, the haze value (meansigma methods) before preserving and the mist degree after preservation Value (meansigma methods) is updated to following formula, calculates the change ratio of mist degree.

The change ratio of mist degree=(mist degree before mist degree-preservation after preservation)/(mist degree before preservation) × 100 (%)

The change ratio of ◎: mist degree is less than 3%

Zero: the change ratio of mist degree is 3% less than 5%

The change ratio of △: mist degree is 5% less than 15%

×: the change ratio of mist degree is more than 15%

It addition, use the film obtained by the scroll of above-mentioned making, make polaroid by following method, evaluate polaroid Yield.

(yield of polaroid)

1) making of the polarizer

The polyvinyl alcohol film making thickness 30 μm with the water of 35 DEG C is swelling.By the film that obtains by iodine 0.075g, potassium iodide 5g Impregnate 60 seconds with in the aqueous solution of water 100g composition, then the water 45 DEG C be made up of potassium iodide 3g, boric acid 7.5g and water 100g Solution impregnates.The film obtained is carried out uniaxial tension under conditions of draft temperature 55 DEG C, stretching ratio 3 times.By this single shaft After stretched film washing so that it is be dried, obtain the polarizer of thickness 5 μm.

2) preparation of active energy ray-curable bonding agent liquid

After mixing following each composition, carry out deaeration, prepare the active energy ray-curable bonding agent of radical polymerization mould assembly Liquid.

(composition of active energy ray-curable bonding agent liquid)

Free-radical polymerised compound 1: hydroxyethyl acrylamide (HEAA, Tg123 DEG C of homopolymer, Xing Ren company System): 39.1 mass %

Free-radical polymerised compound 2: tripropylene glycol diacrylate (Aronix M-220, Tg69 DEG C of homopolymer, East Asia Synesis Company system): 19.0 mass %

Free-radical polymerised compound 3: acryloyl morpholine (ACMO, Tg150 DEG C of homopolymer, Xing Ren company system): 39.1 quality %

Radical polymerization initiator 1: diethyl thioxanthone (KAYACURE DETX-S, chemical medicine company of Japan system): 1.4 matter Amount %

Radical polymerization initiator 2:2-methyl isophthalic acid-(4-methylthiophenyi)-2-morpholino propane-1-ketone (IRGACURE907, BASF AG's system): 1.4 mass %

3) making of polaroid

Prepare 2 films obtained by the scroll made in same manufacturing condition (film obtained by the scroll of same numbering), Corona discharge Treatment is implemented on respective surface.The condition of Corona discharge Treatment is set to corona output intensity 2.0kW, linear velocity 18m/ minute.Then, with bar coater by solidification after thickness be about 3 μm in the way of be each coated with in the Corona discharge Treatment face of this film Apply the active energy ray-curable bonding agent liquid stating preparation, form active energy ray-curable bond layer.

Then, by the polarizer of above-mentioned making with above-mentioned 2 films clamping, film/active energy ray-curable bonding agent is obtained The sandwich of the layer/polarizer/active energy ray-curable bond layer/film.

Use ultraviolet lamp (Fusion UV Systems, the Light of Inc company with ribbon conveyer HAMMER10 bulb: V-arrangement bulb peak illumination: 1600mW/cm²) with cumulative exposure 1000/mJ/cm²(wavelength 380～ The irradiation ultraviolet radiation (enclosing the metal halide lamp of gallium) to this sandwich of mode 440nm), makes active energy line curing Type bond layer solidifies, and obtains polaroid.

4) evaluate

By the yield of polaroid that obtains by following method evaluation.

By the surface of visualization polaroid, evaluate flatness fault and result from the permeability of mist degree.Polaroid Result from mist degree permeability by sensory evaluation confirm polaroid is positioned in white lamps time with or without trickle damage.So After, flatness fault is set to non-defective unit with the situation that to result from the permeability of mist degree the most no problem.Calculate 50 polarizations of making Non-defective unit during sheet, the ratio of defective products.

The polaroid of ◎: non-defective unit is more than 95%

Zero: the polaroid of non-defective unit is 80% less than 95%

The polaroid of △: non-defective unit is 60% less than 80%

×: the polaroid of non-defective unit is less than 60%

By embodiment 1～12 and the evaluation result of comparative example 1～7 be shown in table 6；By embodiment 13～25 and comparative example 8～9 Evaluation result be shown in table 7.

[table 6]

[table 7]

As shown in tables 6 and 7, it is known that the scroll of embodiment 1～25 can suppress the deformation of scroll and mist degree the lowest.

On the other hand, the scroll of comparative example 1 produces the deformation of scroll, and roll-shape is poor.It is thought that because pass through non-vibration Winding method (straight winding) winds, and therefore, the width both ends winding diameter at scroll becomes big, and scroll entirety produces pleat Wrinkle.On the other hand, although the scroll of comparative example 3 and 4 can suppress the deformation of scroll, but mist degree increases.It is thought that because film Sliding is low, film rubs each other, makes film surface by trickle damage.It is considered because the thickness of the film of comparative example 5 is non- The thinnest, therefore, it is impossible to be adequately suppressed the deformation of scroll.The film of comparative example 6 cannot suppress the deformation of scroll.It is thought that because The content of the compound shown in formula (1) is too much, and therefore, film the most excessively slides, and therefore, produces winding skew.It addition, send out Now because resulting from the rising of the mist degree caused by the many bleeding of additive (precipitation) of the addition of additive.

Contrast according to embodiment 1,13 and 14 with comparative example 8, it is known that by making the R of formula (1)₁With R₂The carbon of alkyl Atomic number is more than 8, it is possible to decrease the mist degree of film.It addition, according to the contrast of embodiment 13 with embodiment 15, by making formula (1) R₁With R₂Alkyl be straight-chain, with the R making formula (1)₁With R₂Alkyl be that branched is compared, it is possible to decrease the mist of film Degree.It addition, according to the contrast of embodiment 24 with comparative example 9, it is known that contain carbonyl by the L of formula (1), with the phase of cellulose esters Capacitive improves, it is possible to decrease internal haze.It addition, according to the contrast of embodiment 16 with embodiment 23, it is known that by making formula (1) R₁With R₂Both are alkyl, are compared with hydrogen atom with making a side, it is possible to decrease the mist degree of film.

It addition, according to the contrast of comparative example 2 with comparative example 7, it is known that by the comparative example 2 containing aliphatic polyester compound The film that scroll obtains is compared with the film obtained by the scroll of the comparative example 7 without aliphatic polyester compound, and display is implemented straight The deformation of scroll during winding is notable.Thereby imply that by the application present invention, even if being containing aliphatic polyester compound Film, it is possible to suppress the deformation of scroll well.

It addition, making the thickness of blooming is 50 μm, in addition, obtain blooming and scroll thereof in the same manner as comparative example 1. Then, the shape of the scroll obtained being evaluated as described above, result is " ", does not substantially produce the deformation of scroll. Thereby imply that " deformation of scroll " of the problem as the present invention significantly produces when Film Thickness Ratio 50 μm is thin.

The application advocates based on the priority of Japanese Patent Application 2014-047539 filed in 11 days March in 2014.This application Content described in specification and drawings is all introduced into present specification.

Industrial utilizability

Symbol description

10 scrolls

11 core

13 bloomings

13A embossed portion

20 coiler devices

21 vibration control apparatus

23 guide reels

25 contact rollers

100 small-scale liquid crystal devices

110 liquid crystal cells

130 first polaroids

131 first polarizers

133,135,153,155 protecting film

150 second polaroids

151 second polarizers

170 backlights

190 protection glass

210 touch panel portions

230 rechargeable batteries

Claims

1. a scroll for blooming, is that the blooming of thickness 15～45 μm by having embossed portion at width both ends exists The scroll of the blooming that the length direction of film winds and obtains,

Described blooming contains cellulose esters and is the following of 0.05～5 mass parts relative to described cellulose esters 100 mass parts Compound shown in formula (1),

R₁-L-R₂…(1)

In formula (1), L represents ester bond, amido link, carbonyl or ester bond, amido link or carbonyl is former with selected from alkylidene, nitrogen The group of more than one divalents combined in son, oxygen atom, sulphur atom, zinc atom, calcium atom and magnesium atom；

R₂Represent hydrogen atom, the alkyl of carbon number 8～26 or the thiazolinyl of carbon number 8～26,

The scroll of blooming the most according to claim 1, wherein, the L of described formula (1) for selected from-C (=O)- O-,-C (=O) NH-,-C (=O)-O-R₃-O-C (=O)-,-C (=O)-NH-R₃-NH-C (= O)-,-C (=O)-O-M-O-C (=O)-,-C (=O)-R₄-O-R₄-C (=O)-,-C (=O)-R₄- S-R₄-C (=O)-,-C (=O)-R₄-NH-R₄-C (=O)-and-C (=O)-R₅-C (=O)-in base Group, wherein, R₃For the alkylidene of carbon number 1～5, M is zinc atom, calcium atom or magnesium atom, R₄Asia for carbon number 1～5 Alkyl, R₅Alkylidene for carbon number 1～5.

The scroll of blooming the most according to claim 1, wherein, the R of described formula (1)₁And R₂It is each independently carbon former The alkyl of the straight-chain of subnumber 8～26 or the thiazolinyl of the straight-chain of carbon number 8～26.

The scroll of blooming the most according to claim 1, wherein, the L of described formula (1) contains sulphur atom.

The scroll of blooming the most according to claim 1, wherein, described blooming is possibly together with by aliphatic diol and fat Race's dicarboxylic acids polycondensation and the aliphatic polyester compound that obtains.

The scroll of blooming the most according to claim 1, wherein, by described blooming defined by following formula (I) and with In the face that mensuration wavelength 590nm records, the delay in direction is set to Ro (590), will be defined by following formula (II) and to measure wavelength When the delay of the thickness direction that 590nm records is set to Rth (590), meet | Ro (590) |≤5nm, | Rth (590) |≤5nm,

Formula (I) Ro=(nx-ny) × t (nm)

Formula (II) Rth={ (nx+ny)/2-nz} × t (nm)

In formula (I) and (II), nx represents that direction refractive index reaches the refractive index of maximum slow-axis direction x in the face of film；ny Represent the refractive index of direction and described direction y orthogonal for slow-axis direction x in the face of film；Nz represents the folding of the thickness direction z of film Penetrate rate；T (nm) represents the thickness of film.

7. a manufacture method for the scroll of blooming, wherein, including following operation: prepare containing cellulose esters with relative to institute State the compound shown in following formula (1) that cellulose esters 100 mass parts is 0.05～5 mass parts and at width two ends Portion is provided with the operation of the blooming of the strip of thickness 15～45 μm of embossed portion；And

Described blooming web-like is wound in the operation of core,

Described rolling step includes at least one party in described blooming and described core while at the width of described blooming Direction periodically vibrates, and described blooming is wound in the operation of described core,

R₁-L-R₂…(1)

R₂Represent hydrogen atom, the alkyl of carbon number 8～26 or the thiazolinyl of carbon number 8～26.

8. a polaroid, wherein, including the blooming obtained by the scroll described in claim 1.

9. a liquid crystal indicator, wherein, including the blooming obtained by the scroll described in claim 1.

Liquid crystal indicator the most according to claim 9, wherein, include successively the first polaroid, liquid crystal cells, second Polaroid and backlight,

Described first polaroid includes first polarizer, is configured at contrary with described liquid crystal cells of described first polarizer The protecting film F1 in the face of side and be configured at the protecting film F2 in face of described liquid crystal cell side of described first polarizer,

Described second polaroid includes second polarizer, is configured at the guarantor in the face of the described liquid crystal cell side of described second polarizer Cuticula F3 and be configured at the protecting film F4 in face of the side contrary with described liquid crystal cells of described second polarizer,

At least one party in described protecting film F2 and F3 includes described blooming.

11. liquid crystal indicators according to claim 10, wherein, described liquid crystal cells is IPS pattern or FFS mode Liquid crystal cells.

12. liquid crystal indicators according to claim 9, wherein, diagonally opposed a length of 10 inches of viewing area Below.

13. liquid crystal indicators according to claim 12, wherein, possibly together with rechargeable battery.