WO2015029557A1 - Polyvinyl alcohol film roll and polarizing film using same - Google Patents
Polyvinyl alcohol film roll and polarizing film using same Download PDFInfo
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- WO2015029557A1 WO2015029557A1 PCT/JP2014/066344 JP2014066344W WO2015029557A1 WO 2015029557 A1 WO2015029557 A1 WO 2015029557A1 JP 2014066344 W JP2014066344 W JP 2014066344W WO 2015029557 A1 WO2015029557 A1 WO 2015029557A1
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- polyvinyl alcohol
- film
- alcohol film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/50—Storage means for webs, tapes, or filamentary material
- B65H2701/51—Cores or reels characterised by the material
- B65H2701/512—Cores or reels characterised by the material moulded
- B65H2701/5124—Metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/58—Conveyor systems, e.g. rollers or bearings therefor
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Moulding By Coating Moulds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
芯管がたわんだり、真円が変形してしまった場合には、芯管の変形によりフィルム繰り出し時に偏芯が原因で繰り出し速度が不安定になり、フィルムの破断やシャクリなどの不具合が生じたりする。かかる不具合が原因により光学ムラなどの不具合が発生することにもつながる。また、真円からの変形が大きすぎると、製造整備にセットすらできない状態となってしまう。 In addition, the polyvinyl alcohol film roll wound around the core tube is normally stored in a suspended state by supporting the core tube portion protruding outward from the roll end face. There is a risk that the core tube may bend or the perfect circle may be deformed due to local force at the part where the tube is supported. From this point, improvement of the core tube for further enlargement is required. It is done.
If the core tube is bent or the perfect circle is deformed, the feeding speed becomes unstable due to the eccentricity when the film is fed due to deformation of the core tube, causing problems such as film breakage or shaking. To do. Such a failure also leads to a failure such as optical unevenness. In addition, if the deformation from the perfect circle is too large, it cannot be set even for manufacturing maintenance.
即ち、上記各成分を含有するアルミニウム合金の鋳塊を通常400~600℃に加熱後、高圧環境下でダイスから押し出すことで円筒を形成する。
高温押出しされたアルミニウム合金は、更に常温まで戻した後、再び170~180℃まで昇温しこれを5~10時間程度保持することで人工時効硬化処理を施したり、高温押出し後に急冷(焼き入れ)することで人工時効硬化処理を施す場合がある。 The core tube used in the present invention is an aluminum alloy containing the respective components as described above. For example, the core tube can be manufactured as follows.
That is, an aluminum alloy ingot containing the above components is usually heated to 400 to 600 ° C. and then extruded from a die in a high-pressure environment to form a cylinder.
The aluminum alloy extruded at high temperature is further returned to room temperature and then heated again to 170-180 ° C and held for about 5 to 10 hours for artificial age hardening treatment or rapidly cooled (quenched after high-temperature extrusion) ) May be subjected to artificial age hardening.
前記洗浄及び脱水により、含水率50重量%以下、好ましくは30~45重量%の含水ポリビニルアルコール系樹脂ウェットケーキとすることが好ましい。含水率が多すぎると、所望する水溶液濃度にすることが難しくなる傾向がある。 Next, the water-containing polyvinyl alcohol resin wet cake after washing is dissolved to prepare a polyvinyl alcohol resin aqueous solution. When the water-containing polyvinyl alcohol resin wet cake is dissolved in water as it is, a desired high-concentration aqueous solution is obtained. Therefore, it is preferable to perform dehydration once. The dehydration method is not particularly limited, but a method using centrifugal force is common.
By the washing and dehydration, a water-containing polyvinyl alcohol resin wet cake having a water content of 50% by weight or less, preferably 30 to 45% by weight, is preferably formed. If the water content is too high, it tends to be difficult to obtain a desired aqueous solution concentration.
なお、本発明においては、製品として保管、輸送される状態のときに、ポリビニルアルコール系フィルムロールの芯管として、前記芯管が使用されていることも好ましく、スリッター後に再度巻き取る工程を有する場合には、それ以前での巻き取りにおいては、回転振れが小さく、高強度を有し、耐変形性、耐たわみ性に優れた芯管であれば前記芯管である必要はなく、前記とは異なるアルミニウム製の芯管や鉄製の芯管等を適宜用いることができる。 And the core pipe made from an aluminum alloy which has the said specific component is set to a winder. Next, the winding machine is driven to rotate the core tube, and the obtained polyvinyl alcohol film is wound around the outer peripheral surface of the core tube. Here, as described above, the core tube is made of an aluminum alloy having a specific component and has a high strength by being made of an aluminum alloy having a 0.2% proof stress of 175 N / mm 2 or more. Since it has excellent deformation resistance and deflection resistance, when the core tube is rotated by the winder, the rotational deflection of the core tube is small, and the polyvinyl alcohol film is Can be wound in a homogeneous state. Then, if necessary, the wound polyvinyl alcohol film is cut into a product width by a slitter, and is wound around the core tube again. In this way, the polyvinyl alcohol film roll of this embodiment can be obtained.
In the present invention, the core tube is also preferably used as the core tube of the polyvinyl alcohol film roll when stored and transported as a product, and has a step of rewinding after the slitter. In the winding before that, if the core tube has a small rotational runout, high strength, excellent deformation resistance and deflection resistance, it is not necessary to be the core tube. Different aluminum core tubes, iron core tubes, and the like can be used as appropriate.
The polyvinyl alcohol film roll obtained in this way is moved to a support base and the left and right ends of the core tube are supported. Since the core tube is excellent in deformation resistance and deflection resistance as described above, the polyvinyl alcohol film roll obtained by winding the polyvinyl alcohol film on the core tube is also resistant to deformation and deflection. It is excellent in performance and is supported, stored or transported without deformation or deflection, or with a small amount of deformation or deflection.
そこで、以下、そのポリビニルアルコール系フィルムを用いた偏光膜の製法の一例について説明する。 And the polyvinyl alcohol-type film of the said polyvinyl alcohol-type film roll is very useful as a formation material of an optical film, especially a polarizing film.
Therefore, an example of a method for producing a polarizing film using the polyvinyl alcohol film will be described below.
なお、例中「部」、「%」とあるのは、重量基準を意味する。 EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated further more concretely, this invention is not limited to a following example, unless the summary is exceeded.
In the examples, “parts” and “%” mean weight basis.
下記に示すように、芯管およびポリビニルアルコール系フィルムを作製した後、その芯管の外周面にポリビニルアルコール系フィルムを巻き取り、ポリビニルアルコール系フィルムロールを作製した。そして、そのポリビニルアルコール系フィルムロールのポリビニルアルコール系フィルムを用いて、偏光膜を作製した。 [Example 1]
As shown below, after producing a core tube and a polyvinyl alcohol film, the polyvinyl alcohol film was wound around the outer peripheral surface of the core tube to produce a polyvinyl alcohol film roll. And the polarizing film was produced using the polyvinyl alcohol-type film of the polyvinyl alcohol-type film roll.
上記実施の形態のような特定の成分と0.2%耐力とを有するアルミニウム合金として、JISで規定されているA6N01を選択し、それを材料として、円筒状の芯管を作製した。そのアルミニウム合金A6N01の化学成分を下記の表1に示し、上記0.2%耐力を下記の表2に示す。そして、その芯管の寸法は、外径215mm、円筒長3500mm、肉厚6mmとした。また、その芯管の質量は、37kgであった。 [Core tube]
As an aluminum alloy having a specific component and 0.2% proof stress as in the above embodiment, A6N01 defined by JIS was selected, and a cylindrical core tube was produced using it as a material. The chemical composition of the aluminum alloy A6N01 is shown in Table 1 below, and the 0.2% proof stress is shown in Table 2 below. The dimensions of the core tube were an outer diameter of 215 mm, a cylindrical length of 3500 mm, and a wall thickness of 6 mm. The mass of the core tube was 37 kg.
なお、上記0.2%耐力は、つぎのようにして求めた。
即ち、0.2%耐力の測定は、JIS Z2241「金属材料引張試験方法」に準拠した。また、試験片の作製は、JIS Z2201「金属材料引張試験片」に準拠し、円筒形芯管から試験片分類14号B号に切り出したものを用いた。引張試験は、島津製作所製オートグラフAG-X(100kN)を用い、引張速度5mm/minで測定を行った。測定データを元に、ひずみ-応力曲線から0.2%のひずみが与えられた時の応力を0.2%耐力とした。 [0.2% yield strength test]
The 0.2% yield strength was determined as follows.
That is, the measurement of 0.2% proof stress was based on JIS Z2241 “Metal material tensile test method”. In addition, the test piece was produced in accordance with JIS Z2201 “Metal material tensile test piece” and cut from a cylindrical core tube into test piece classification No. 14B. The tensile test was performed using an autograph AG-X (100 kN) manufactured by Shimadzu Corporation at a tensile speed of 5 mm / min. Based on the measurement data, the stress when 0.2% strain was applied from the strain-stress curve was defined as 0.2% proof stress.
重量平均分子量135000、ケン化度99.7モル%のポリビニルアルコール100部、可塑剤としてグリセリン12部、界面活性剤(剥離剤)としてポリオキシエチレンアルキルアミノエーテル0.1部を用いて、35%濃度のポリビニルアルコール水溶液(可塑剤、剥離剤も固形分として含む)を調製した後、T型スリットダイよりドラム型ロールで流延製膜し、乾燥、熱処理、調湿を行い含水率4%、幅3000mm、厚み75μmのポリビニルアルコール系フィルムを作製した。 [Polyvinyl alcohol film]
100% polyvinyl alcohol having a weight average molecular weight of 135,000 and a saponification degree of 99.7 mol%, 12 parts of glycerin as a plasticizer, and 0.1 part of polyoxyethylene alkylamino ether as a surfactant (release agent), 35% After preparing a polyvinyl alcohol aqueous solution having a concentration (including a plasticizer and a release agent as a solid content), the film is casted with a drum-type roll from a T-type slit die, dried, heat-treated and conditioned to a moisture content of 4%. A polyvinyl alcohol film having a width of 3000 mm and a thickness of 75 μm was produced.
そして、上記芯管の外周面に上記ポリビニルアルコール系フィルムを10000m巻き取った。このとき、巻き取り張力(ポリビニルアルコール系フィルムの幅1m当たりの張力)を130N/m、巻き取り速度を80m/minとした。巻き取りを終えた後のポリビニルアルコール系フィルムロールの質量は、3000kgであった。 [Preparation of polyvinyl alcohol film roll]
Then, 10,000 m of the polyvinyl alcohol film was wound around the outer peripheral surface of the core tube. At this time, the winding tension (tension per 1 m width of the polyvinyl alcohol film) was 130 N / m, and the winding speed was 80 m / min. The mass of the polyvinyl alcohol film roll after winding was 3000 kg.
その後、巻き取った後のポリビニルアルコール系フィルムを1.23m/minの速度で繰り出し、水洗槽(24℃)で膨潤させた後、ヨウ素槽(20℃、ヨウ素0.17g/リットル)で1.8倍、ホウ酸槽(50℃、ヨウ素8ppm、ホウ酸47g/リットル)で2.0倍の一軸延伸を行い、さらに巻き取り速度6.4m/minでトータル5.2倍の一軸延伸を行い、偏光膜を作製した。 (Preparation of polarizing film)
Then, after winding up the polyvinyl alcohol film at a rate of 1.23 m / min, it was swollen in a water-washing tank (24 ° C.), and then in an iodine tank (20 ° C., iodine 0.17 g / liter). Eight times, uniaxially stretching 2.0 times in a boric acid bath (50 ° C., 8 ppm iodine, 47 g / liter boric acid), and further uniaxially stretching 5.2 times at a winding speed of 6.4 m / min. A polarizing film was prepared.
上記実施例1において、芯管の肉厚を8mmとした。その芯管の質量は、50kgであった。それ以外は、上記実施例1と同様とした。 [Example 2]
In the said Example 1, the thickness of the core pipe was 8 mm. The mass of the core tube was 50 kg. Other than that was the same as Example 1 above.
上記実施の形態のような特定の成分と0.2%耐力とを有するアルミニウム合金として、JISで規定されているA6061を選択し、それを材料として、円筒状の芯管を作製した。その0.2%耐力は、上記実施例1と同様にして求めた。また、そのアルミニウム合金A6061の化学成分を下記の表1に示し、上記0.2%耐力を下記の表2に示す。そして、その芯管の寸法は、外径233mm、円筒長4800mm、肉厚15mmとした。また、その芯管の質量は、133kgであった。当該芯管に巻くポリビニルアルコール系フィルムとして、幅4500mm、厚み60μmのポリビニルアルコール系フィルムを作製した。また、ポリビニルアルコール系フィルムロールの質量は、3600kgであった。それ以外は、上記実施例1と同様とした。 Example 3
As an aluminum alloy having a specific component and 0.2% proof stress as in the above embodiment, A6061 defined by JIS was selected, and a cylindrical core tube was produced using it as a material. The 0.2% proof stress was obtained in the same manner as in Example 1 above. The chemical components of the aluminum alloy A6061 are shown in Table 1 below, and the 0.2% proof stress is shown in Table 2 below. The dimensions of the core tube were an outer diameter of 233 mm, a cylinder length of 4800 mm, and a wall thickness of 15 mm. The mass of the core tube was 133 kg. A polyvinyl alcohol film having a width of 4500 mm and a thickness of 60 μm was prepared as a polyvinyl alcohol film wound around the core tube. Moreover, the mass of the polyvinyl alcohol film roll was 3600 kg. Other than that was the same as Example 1 above.
上記実施例1において、JISで規定されているアルミニウム合金A6063製の芯管を準備した。そのアルミニウム合金A6063の化学成分を下記の表1に示し、上記0.2%耐力を下記の表2に示す。その0.2%耐力は、上記実施例1と同様にして求めた。また、その芯管の質量は、37kgであった。また、ポリビニルアルコール系フィルムロールの質量は、3000kgであった。それ以外は、上記実施例1と同様とした。 [Comparative Example 1]
In the said Example 1, the core pipe made from aluminum alloy A6063 prescribed | regulated by JIS was prepared. The chemical composition of the aluminum alloy A6063 is shown in Table 1 below, and the 0.2% proof stress is shown in Table 2 below. The 0.2% proof stress was obtained in the same manner as in Example 1 above. The mass of the core tube was 37 kg. Moreover, the mass of the polyvinyl alcohol film roll was 3000 kg. Other than that was the same as Example 1 above.
上記実施例3において、JISで規定されているアルミニウム合金A6063製の芯管を準備した。そのアルミニウム合金A6063の化学成分を下記の表1に示し、上記0.2%耐力を下記の表2に示す。その0.2%耐力は、上記実施例1と同様にして求めた。また、その芯管の質量は、133kgであった。また、ポリビニルアルコール系フィルムロールの質量は、3600kgであった。それ以外は、上記実施例3と同様とした。 [Comparative Example 2]
In the said Example 3, the core pipe made from aluminum alloy A6063 prescribed | regulated by JIS was prepared. The chemical composition of the aluminum alloy A6063 is shown in Table 1 below, and the 0.2% proof stress is shown in Table 2 below. The 0.2% proof stress was obtained in the same manner as in Example 1 above. The mass of the core tube was 133 kg. Moreover, the mass of the polyvinyl alcohol film roll was 3600 kg. Other than that was the same as Example 3.
上記実施例1~3および比較例1,2のポリビニルアルコール系フィルムロールの自重たわみ(両端ピン支持時の中央部のたわみ)を測定した。その結果を、下記の表2に表記した。 [Self-weight deflection of polyvinyl alcohol film roll]
The self-weight deflection of the polyvinyl alcohol film rolls of Examples 1 to 3 and Comparative Examples 1 and 2 (the deflection at the center when both end pins are supported) was measured. The results are shown in Table 2 below.
巻き取り時の各ポリビニルアルコール系フィルムの皺の形成の有無を目視により評価した。その結果、皺の形成が確認されなかったものを均質性に優れるとして○、皺の形成が確認されたものを均質性に劣るとして×と評価し、下記の表2に表記した。 [Presence or absence of wrinkle formation when winding a polyvinyl alcohol film]
The presence or absence of wrinkle formation of each polyvinyl alcohol film at the time of winding was visually evaluated. As a result, the case where the formation of wrinkles was not confirmed was evaluated as “good” as being excellent in homogeneity, and the case where formation of wrinkles was confirmed as “poor” as evaluated as “poor”.
偏光膜のすじおよび染色むらを目視により評価した。その結果、すじおよび染色むらのいずれも確認されなかったものを外観特性に優れるとして○、いずれかが確認されたものを外観特性に劣るとして×と評価し、下記の表2に表記した。 [Polarity of polarizing film, presence or absence of uneven dyeing]
The streaks and dyeing unevenness of the polarizing film were visually evaluated. As a result, the case where neither streak nor dyeing unevenness was confirmed was evaluated as “Excellent” if it was excellent in appearance characteristics, and the case where either one was confirmed was evaluated as “Poor” as inferior appearance characteristics, and is shown in Table 2 below.
測定装置として日本分光株式会社製「VAP-7070」を用いて、偏光膜の光学特性(単体透過率および偏光度)を測定した。この測定は、偏光膜の幅方向に対して等間隔に5箇所測定し、その最大値,最小値,平均値を下記の表2に表記した。
なお、比較例1,2のポリビニルアルコールフィルムでは、皺が発生し、偏光膜とした際に染色むらが生じるものとなった。そのため、フィルム面内において、単体透過率および偏光度の高いところや低いところができ、均一なフィルムとはならなかった。 [Optical characteristics of polarizing film]
Using “VAP-7070” manufactured by JASCO Corporation as a measuring device, the optical properties (single transmittance and degree of polarization) of the polarizing film were measured. In this measurement, five points were measured at equal intervals in the width direction of the polarizing film, and the maximum value, the minimum value, and the average value are shown in Table 2 below.
In addition, in the polyvinyl alcohol film of Comparative Examples 1 and 2, wrinkles were generated, and uneven dyeing occurred when the polarizing film was formed. Therefore, in the film plane, the single transmittance and the degree of polarization were high and low, and the film was not uniform.
上記実施例1,2および比較例1の芯管を構成するアルミニウム合金からなる試験片〔幅40mm、厚みは各例の肉厚(実施例1および比較例1:6mm、実施例2:8mm)〕を各例3個準備し、各試験片に対し、引張圧縮試験機(インストロン社製、100KN)を用い、下記の条件にて圧縮試験を行った。そして、変位50mm時の荷重を測定し、3個の試験片の平均値を算出した。
曲げ速度:10mm/min
試験温度:23℃
使用ロードセル:100kN
圧縮距離:80mm [Compression test]
Test piece made of an aluminum alloy constituting the core tube of Examples 1 and 2 and Comparative Example 1 (width 40 mm, thickness is the thickness of each example (Example 1 and Comparative Example 1: 6 mm, Example 2: 8 mm)) Each of the test pieces was subjected to a compression test under the following conditions using a tensile and compression tester (Instron, 100KN). And the load at the time of displacement 50mm was measured, and the average value of three test pieces was computed.
Bending speed: 10 mm / min
Test temperature: 23 ° C
Load cell used: 100kN
Compression distance: 80mm
Claims (6)
- 光学用ポリビニルアルコール系フィルムを円筒状の芯管に巻き取ってなるポリビニルアルコール系フィルムロールであり、該芯管がアルミニウム合金からなり、該アルミニウム合金の
銅含有量が0.15~0.5重量%、
マンガン含有量が0.04~0.8重量%、
クロム含有量が0.01~0.5重量%、
亜鉛含有量が0.01~0.5重量%
であることを特徴とするポリビニルアルコール系フィルムロール。 A polyvinyl alcohol film roll obtained by winding an optical polyvinyl alcohol film on a cylindrical core tube, the core tube being made of an aluminum alloy, and the copper content of the aluminum alloy being 0.15 to 0.5 weight. %,
Manganese content is 0.04-0.8% by weight,
Chromium content of 0.01-0.5 wt%,
Zinc content 0.01-0.5 wt%
A polyvinyl alcohol film roll characterized by the above. - アルミニウム合金のケイ素含有量が0.3~1.5重量%であることを特徴とする請求項1記載のポリビニルアルコール系フィルムロール。 The polyvinyl alcohol film roll according to claim 1, wherein the silicon content of the aluminum alloy is 0.3 to 1.5% by weight.
- アルミニウム合金の
鉄含有量が0.04~0.8重量%、
マグネシウム含有量が0.2~1.5重量%、
チタン含有量が0.01~0.5重量%以下
であることを特徴とする請求項1または2記載のポリビニルアルコール系フィルムロール。 The iron content of the aluminum alloy is 0.04 to 0.8% by weight,
Magnesium content is 0.2-1.5% by weight,
3. The polyvinyl alcohol film roll according to claim 1, wherein the titanium content is 0.01 to 0.5% by weight or less. - アルミニウム合金の0.2%耐力が175N/mm2 以上であることを特徴とする請求項1~3いずれか記載のポリビニルアルコール系フィルムロール。 The polyvinyl alcohol film roll according to any one of claims 1 to 3, wherein the 0.2% yield strength of the aluminum alloy is 175 N / mm 2 or more.
- 芯管の外径が、150~300mmで、芯管の円筒長が、2~7mであることを特徴とする請求項1~4いずれか記載のポリビニルアルコール系フィルムロール。 5. The polyvinyl alcohol film roll according to claim 1, wherein the outer diameter of the core tube is 150 to 300 mm, and the cylindrical length of the core tube is 2 to 7 m.
- 請求項1~5いずれか記載のポリビニルアルコール系フィルムロールを、繰り出してなるポリビニルアルコール系フィルムを用いて得られることを特徴とする偏光膜。 A polarizing film obtained by using a polyvinyl alcohol film obtained by drawing out the polyvinyl alcohol film roll according to any one of claims 1 to 5.
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CN114252951A (en) * | 2016-05-27 | 2022-03-29 | 三菱化学株式会社 | Optical polyvinyl alcohol film, method for producing same, and polarizing film using same |
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JPS55145144A (en) * | 1979-04-24 | 1980-11-12 | Sumitomo Alum Smelt Co Ltd | Medium-strength aluminum alloy with superior forming workability |
JP2005306483A (en) * | 2004-03-23 | 2005-11-04 | Nippon Synthetic Chem Ind Co Ltd:The | Storage or transportation method of polyvinyl alcohol type film for optical use |
JP2012236663A (en) * | 2011-05-10 | 2012-12-06 | Sankyo Tateyama Inc | Film winding core |
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JP2004106377A (en) | 2002-09-19 | 2004-04-08 | Nippon Synthetic Chem Ind Co Ltd:The | Polyvinyl alcohol film roll and polarization film using that |
GB0423409D0 (en) * | 2004-10-21 | 2004-11-24 | Core Control Ltd | A core for a roll of material |
CN101169493A (en) * | 2006-10-25 | 2008-04-30 | 达信科技股份有限公司 | Polarizing body preparation method and polarizing sheet preparation method |
JP2008207812A (en) * | 2007-02-23 | 2008-09-11 | Kaneka Corp | Polyimide film roll and its packing method |
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JPS55145144A (en) * | 1979-04-24 | 1980-11-12 | Sumitomo Alum Smelt Co Ltd | Medium-strength aluminum alloy with superior forming workability |
JP2005306483A (en) * | 2004-03-23 | 2005-11-04 | Nippon Synthetic Chem Ind Co Ltd:The | Storage or transportation method of polyvinyl alcohol type film for optical use |
JP2012236663A (en) * | 2011-05-10 | 2012-12-06 | Sankyo Tateyama Inc | Film winding core |
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