WO2014030474A1 - 二軸配向ポリエチレンテレフタレートフィルムおよびその製造方法 - Google Patents
二軸配向ポリエチレンテレフタレートフィルムおよびその製造方法 Download PDFInfo
- Publication number
- WO2014030474A1 WO2014030474A1 PCT/JP2013/069620 JP2013069620W WO2014030474A1 WO 2014030474 A1 WO2014030474 A1 WO 2014030474A1 JP 2013069620 W JP2013069620 W JP 2013069620W WO 2014030474 A1 WO2014030474 A1 WO 2014030474A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- polyethylene terephthalate
- temperature
- biaxially oriented
- oriented polyethylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/10—Semiconductor bodies
- H10F77/16—Material structures, e.g. crystalline structures, film structures or crystal plane orientations
- H10F77/169—Thin semiconductor films on metallic or insulating substrates
- H10F77/1698—Thin semiconductor films on metallic or insulating substrates the metallic or insulating substrates being flexible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Definitions
- the present invention relates to a biaxially oriented polyethylene terephthalate film excellent in thermal dimensional stability particularly in a high temperature range.
- the biaxially oriented polyethylene terephthalate film of the present invention can be suitably used for a substrate film for flexible devices.
- the biaxially oriented polyethylene terephthalate film of the present invention is particularly an organic electroluminescence (hereinafter sometimes abbreviated as EL) display, electronic paper, organic EL illumination, organic solar cell, dye-sensitized solar cell, and barrier.
- EL organic electroluminescence
- a base film having a small dimensional change in various steps, a small curl, and excellent workability can be obtained.
- Biaxially oriented polyethylene terephthalate film utilizes its excellent thermal properties, dimensional stability, mechanical properties, electrical properties, heat resistance, and surface properties to provide magnetic recording materials, packaging materials, electrical insulating materials, various photographic materials, graphics It is widely used as a base material for many applications such as art materials and optical display materials.
- Patent Document 1 makes it difficult for polyethylene terephthalate to be oriented and the low thermal expansion cannot be sufficiently improved. Further, in the method disclosed in Patent Document 2, if particles are added at a high concentration, the stretchability deteriorates and the reduction in thermal expansion is not sufficiently improved. Moreover, transparency is deteriorated by addition of high concentration of particles. Furthermore, in Patent Document 3, the thermal dimensional stability is improved by high orientation with the sea-island structure as a node, but it is difficult to improve the thermal dimensional stability with polyethylene terephthalate having no sea-island structure. . In Patent Document 4, carbon nanofibers are added as an inorganic filler, the stretchability is deteriorated, and the low thermal expansion is not sufficiently improved. Moreover, transparency and a color tone deteriorate with an inorganic filler.
- an object of the present invention is to solve the above-described problems, and in particular to obtain a biaxially oriented polyethylene terephthalate film excellent in thermal dimensional stability (low thermal expansion) in a high temperature range and excellent in transparency,
- An object of the present invention is to provide a biaxially oriented polyethylene terephthalate film that can reduce dimensional changes in various steps when used as a base film for a flexible device, has small curl, and has excellent processability.
- the present invention is intended to achieve the above object and has the following characteristics.
- the polyethylene terephthalate resin is melt-extruded, it is cooled and solidified to form an unstretched film, and then the unstretched film is biaxially stretched and then heat-set in two or more steps at different temperatures, and the heat
- the heat fixing temperature Ths1 (° C.) of the previous stage of fixing is 150 to 200 ° C.
- the heat fixing temperature Ths 2 (° C.) of the final stage is 210 to 240 ° C.
- cooling is performed at a temperature of 35 ° C. or less.
- the biaxially oriented polyethylene terephthalate film according to any one of (1) to (6), which is obtained by subsequently performing a relaxation annealing treatment at a temperature exceeding 200 ° C.
- a polyethylene terephthalate resin is melt-extruded, cooled and solidified to form an unstretched film, and then the unstretched film is biaxially stretched and then heated in two or more steps having different temperatures.
- the heat setting temperature Ths1 (° C.) of the previous stage of the heat setting is 150 to 200 ° C.
- the heat setting temperature Ths 2 (° C.) of the last stage is 210 to 240 ° C. After the heat setting, 35 ° C.
- the method for producing a biaxially oriented polyethylene terephthalate film according to any one of (1) to (4), wherein the annealing treatment is performed at a temperature of 235 ° C. (9) A film for an organic EL substrate comprising the biaxially oriented polyethylene terephthalate film according to any one of (1) to (7). (10) A flexible solar cell substrate film using the biaxially oriented polyethylene terephthalate film according to any one of (1) to (7). (11) A barrier substrate film using the biaxially oriented polyethylene terephthalate film according to any one of (1) to (7).
- a polyethylene terephthalate film having excellent thermal dimensional stability in a high temperature range can be obtained.
- dimensional changes in various processes can be reduced, and in particular, a polyethylene terephthalate film having a small amount of curling and excellent flatness in an annealing process can be obtained.
- the biaxially oriented polyethylene terephthalate film of the present invention is a crystalline polyester, such as polyethylene terephthalate (hereinafter referred to as “polyester terephthalate”), particularly from the viewpoint of imparting excellent productivity, mechanical properties, thermal dimensional stability, electrical properties, surface properties and heat resistance. (It may be called PET.) Needs to be the main component.
- a main component means 80 mass% or more in a film composition.
- the intrinsic viscosity (IV) of the resin constituting the film needs to be 0.66 to 1.0 dl / g, more preferably 0.68 to 1.00 dl / g. It is necessary to be g.
- the thermal expansion coefficient can be effectively reduced when the film is highly oriented, and oligomer precipitation is suppressed.
- IV is less than 0.66 dl / g, the amount of low molecular weight components increases, and thus oligomers may be easily precipitated during heating.
- the molecular chain is shortened, there may be a case where a sufficient effect of reducing the thermal expansion cannot be obtained even when the orientation is high.
- the IV is smaller than 0.68 dl / g, the molecular chain becomes short, so that the effect of reducing the thermal expansion cannot be obtained even if the orientation is high.
- the intrinsic viscosity is larger than 1.00 dl / g, the effect of reducing the thermal expansion can be obtained, but the thermal shrinkage in the high temperature range becomes large.
- the viscosity is high in a molten state, and a load is applied to the extruder during film formation, making it difficult to discharge stably, and uneven thickness and stretch are likely to occur, which may deteriorate productivity.
- the intrinsic viscosity of the resin constituting the film is particularly affected by the intrinsic viscosity of the raw material, the water content of the raw material during film formation, the film forming temperature condition, and the like.
- the intrinsic viscosity of the resin constituting the film increases as the intrinsic viscosity of the polyethylene terephthalate resin as the raw material increases.
- the intrinsic viscosities of the resins constituting the film may be prepared by lamination or kneading.
- the intrinsic viscosity of the resin constituting the film is preferably 0.70 to 0.90 dl / g, more preferably 0.70 to 0.80 dl / g.
- the biaxially oriented PET film of the present invention needs to have a crystallinity ( ⁇ c) of more than 0.35 and 0.50 or less. Within the above range, thermal shrinkage at a high temperature range described later can be reduced. If the degree of crystallinity ( ⁇ c) is 0.35 or less, crystals may not be sufficiently formed, and a sufficiently low thermal shrinkage rate may not be achieved. On the other hand, if the degree of crystallinity () c) exceeds 0.50, the crystal has grown, so the orientation in the in-plane direction is lowered, and sufficient low thermal expansion may not be achieved.
- the crystallinity ( ⁇ c) is preferably 0.38 to 0.42.
- the crystallinity ( ⁇ c) is greatly affected by the heat treatment conditions. For example, the crystallinity can be increased by increasing the heat setting temperature in the heat treatment step.
- the biaxially oriented PET film of the present invention has a coefficient of thermal expansion at a temperature of 50 to 170 ° C. when the temperature is raised from 30 ° C. to 180 ° C. and further lowered to 50 ° C. in the method described later. It is necessary to be 0 to 29 ppm / ° C. in the width direction, and more preferably 0 to 25 ppm / ° C. When the coefficient of thermal expansion exceeds the above range, dimensional change due to heat is large, so when used as a base film for flexible devices, curl is greatly generated in various processes, peeling from the device layer, cracking due to deformation, etc. Problems may occur.
- thermal expansion coefficient in the film of the present invention can be obtained by the film forming conditions described later, but can be obtained by controlling the heat treatment conditions.
- the biaxially oriented PET film of the present invention needs to have a thermal shrinkage rate of ⁇ 0.5 to 1.0% at 180 ° C. in the film longitudinal direction and the film width direction.
- a thermal shrinkage rate of ⁇ 0.5 to 1.0% at 180 ° C. in the film longitudinal direction and the film width direction.
- it is within the above range, curling due to heat in various steps when forming the device layer can be reduced, and dimensional change is small, so that peeling from the device layer can be suppressed. More preferably, it is ⁇ 0.5 to 0.7%, and further preferably ⁇ 0.2 to 0.5%.
- the heat shrinkage rate at a temperature of 180 ° C. in the film longitudinal direction and the film width direction can be controlled by predetermined film forming conditions described later, but it is particularly preferable to control the heat treatment conditions and the relaxation annealing conditions.
- the heat shrinkage rate of the film of the present invention increases when the heat shrinkage rate before the annealing step is large. Therefore, in order to make the thermal shrinkage rate 1.0% or less, it is preferable that the thermal shrinkage rate at 180 ° C. before the annealing step is 0 to 4.0%. If the thermal shrinkage rate at 180 ° C.
- the thermal shrinkage rate at 180 ° C. before relaxation annealing is more preferably 0 to 3.0%.
- the heat shrinkage rate before the annealing step is affected by the draw ratio and the heat treatment step, the heat shrinkage rate before the relaxation annealing step can be reduced by applying multistage heat fixation described later in the heat treatment step.
- the thermal shrinkage rate at 180 ° C. in the film longitudinal direction and film width direction of the axially oriented PET film can be set to ⁇ 0.5 to 1.0%, and the flatness in the relaxation annealing process can be maintained.
- the biaxially oriented PET film of the present invention preferably has a film haze of 0 to 3%. If the film haze exceeds 3%, the transparency is low, and the performance of the organic EL or thin film solar cell may not be sufficient.
- the film haze is more preferably 0 to 2%.
- film haze may increase.
- the film haze can be controlled by the additive concentration of the additive particles and the average particle size. When the average particle diameter is 1 nm to 3000 nm, the film haze can be easily adjusted to the above range, which is preferable from the viewpoint of the transparency of the film. More preferably, it is 1 nm to 2000 nm, and still more preferably 1 nm to 1500 nm.
- the particle concentration is preferably 0.0 part by mass to 1.0 part by mass. Within the above range, particles having different particle systems may be mixed.
- the biaxially oriented PET film of the present invention preferably has a minute melting peak temperature (T-meta) of 210 to 240 ° C.
- T-meta is affected by the heat treatment temperature for fixing the crystal structure after biaxial stretching. However, if T-meta is less than 210 ° C., the structure fixation by heat treatment is insufficient and the thermal shrinkage tends to increase. On the other hand, if T-meta is higher than 240 ° C., orientational relaxation occurs extremely and the thermal expansion coefficient tends to increase.
- T-meta is more preferably 215 to 235 ° C., further preferably 220 to 230 ° C.
- T-meta can be controlled by the heat setting temperature. T-meta varies depending on the film forming machine and the film forming speed, but becomes higher as the heat setting temperature is higher.
- the biaxially oriented PET film of the present invention preferably has a change in film haze of 0.0 to 3.0% when heat-treated at 180 ° C. for 30 minutes. It is preferable that the amount of change in film haze is within the above range because transparency can be maintained in the device layer forming process. When the amount of change in film haze exceeds 3.0%, transparency is deteriorated in the device layer forming process, leading to deterioration of power generation efficiency and light emission efficiency. The amount of change in film haze is more preferably 0 to 1.5%. When a PET film is heat-treated at a high temperature, a low molecular weight component is precipitated as an oligomer, so that the film haze increases.
- the biaxially oriented PET film of the present invention preferably uses a PET resin from which an oligomer component has been removed as a raw material.
- a method for producing a PET resin from which the oligomer component has been removed for example, the technology described in Japanese Patent Application Laid-Open No. 2005-53968 can be employed.
- the biaxially oriented PET film of the present invention preferably has a crystallization index ( ⁇ Tcg) of 10 ° C. or higher and 60 ° C. or lower.
- ⁇ Tcg crystallization index
- ⁇ Tcg is more preferably 30 to 50 ° C.
- PET in which at least one kind of crystal nucleating agent is contained in PET and adjusted so that the crystallization speed is increased by the crystal nucleating agent effect.
- a method in which lithium acetate, magnesium acetate, potassium acetate, phosphorous acid, phosphonic acid, phosphinic acid or their derivatives, antimony oxide, and germanium oxide are present during transesterification and polymerization is effective.
- a particularly preferred desirable combination is magnesium acetate and phosphonic acid (or a derivative thereof) and antimony oxide, and examples of phosphonic acid (or a derivative thereof) include phenylphosphonic acid and dimethylphenylphosphonate.
- the crystalline substance can be preferably selected from the group such as talc, aliphatic carboxylic acid amide, aliphatic carboxylate, aliphatic alcohol, aliphatic carboxylic acid ester, sorbitol compound, and organic phosphoric acid compound.
- the crystal nucleating agent is one kind of crystal nucleating agent comprising an aliphatic carboxylic acid amide, an aliphatic carboxylate and a sorbitol compound.
- the preferable content of the crystal nucleating agent is 100 parts by mass of PET and 0.1 to 2 parts by mass of the crystal nucleating agent. If the concentration of the crystal nucleating agent is less than 0.1 parts by mass, the effect may not be sufficiently exhibited. If the concentration of the crystal nucleating agent exceeds 2 parts by mass, the transparency may be impaired. .
- aliphatic carboxylic acid amides include aliphatic monocarboxylic acids such as lauric acid amide, palmitic acid amide, oleic acid amide, stearic acid amide, erucic acid amide, behenic acid amide, ricinoleic acid amide, and hydroxy stearic acid amide.
- Acid amides N-oleyl palmitic acid amide, N-oleyl oleic acid amide, N-oleyl stearic acid amide, N-stearyl oleic acid amide, N-stearyl stearic acid amide, N-stearyl erucic acid amide, methylol stearic acid amide N-substituted aliphatic monocarboxylic amides such as methylol behenic acid amide, methylene bis stearic acid amide, ethylene bis lauric acid amide, ethylene bis capric acid amide, ethylene bis oleic acid amide, ethylene bis Arynic acid amide, ethylene biserucic acid amide, ethylene bis behenic acid amide, ethylene bisisostearic acid amide, ethylene bishydroxystearic acid amide, butylene bisstearic acid amide, hexamethylene bisoleic acid amide, hexamethylene bisstearic acid Alipha
- aliphatic monocarboxylic acid amides may be one kind or a mixture of two or more kinds.
- aliphatic monocarboxylic acid amides, N-substituted aliphatic monocarboxylic acid amides, and aliphatic biscarboxylic acid amides are preferably used, particularly palmitic acid amide, stearic acid amide, erucic acid amide, and behenic acid.
- Amide, ricinoleic acid amide, hydroxystearic acid amide, N-oleyl palmitic acid amide, N-stearyl erucic acid amide, ethylene biscapric acid amide, ethylene bisoleic acid amide, ethylene bislauric acid amide, ethylene biserucic acid amide, m -Xylylene bis-stearic acid amide and m-xylylene bis-12-hydroxystearic acid amide are preferably used.
- aliphatic carboxylate examples include acetates such as sodium acetate, potassium acetate, magnesium acetate, calcium acetate, sodium laurate, potassium laurate, potassium hydrogen laurate, magnesium laurate, calcium laurate, zinc laurate , Laurates such as silver laurate, lithium myristate, sodium myristate, potassium hydrogen myristate, magnesium myristate, calcium myristate, zinc myristate, silver myristate, myristate, lithium palmitate, palmitic acid Palmitates such as potassium, magnesium palmitate, calcium palmitate, zinc palmitate, copper palmitate, lead palmitate, thallium palmitate, cobalt palmitate, etc., sodium oleate Oleates such as potassium oleate, magnesium oleate, calcium oleate, zinc oleate, lead oleate, thallium oleate, copper oleate, nickel oleate, sodium stearate, lithium stearate, magnesium steacetate,
- stearic acid salts and montanic acid salts are preferably used, and in particular, sodium stearate, potassium stearate, zinc stearate, barium stearate, sodium montanate, and the like are suitably used.
- aliphatic alcohols include aliphatic monoalcohols such as pentadecyl alcohol, cetyl alcohol, heptadecyl alcohol, stearyl alcohol, nonadecyl alcohol, eicosyl alcohol, seryl alcohol, and melyl alcohol, 1,6-hexane.
- aliphatic carboxylic acid ester examples include lauric acid cetyl ester, lauric acid phenacyl ester, myristic acid cetyl ester, myristic acid phenacyl ester, palmitic acid isopropylidene ester, palmitic acid dodecyl ester, and palmitic acid tetraethyl ester.
- Aliphatic monocarboxylic acid esters such as dodecyl ester, palmitic acid pentadecyl ester, palmitic acid octadecyl ester, palmitic acid cetyl ester, palmitic acid phenyl ester, palmitic acid phenacyl ester, stearic acid cetyl ester, behenic acid ethyl ester, monolaurin Monoesters of ethylene glycol such as acid glycol, glycol monopalmitate, glycol monostearate, glycol dilaurate, Diesters of ethylene glycol such as glycol palmitate and glycol distearate, monolaurate glycerin ester, monomyristic acid glycerin ester, monopalmitic acid glycerin ester, glycerin monoesters such as monostearic acid glycerin ester, dilauric acid glycerin ester, Glycerin diesters such as dimy
- aliphatic / aromatic carboxylic acid hydrazides include sebacic acid dibenzoic acid hydrazide, specific examples of melamine compounds, specific examples of melamine cyanurate, polymelate melamine, and phenylphosphonic acid metal salts.
- phenylphosphonic acid zinc salt, phenylphosphonic acid calcium salt, phenylphosphonic acid magnesium salt, and phenylphosphonic acid magnesium salt can be used.
- sorbitol compounds include 1,3-di (P-methylbenzylidene) sorbitol, 2,4-di (P-methylbenzylidene) sorbitol, 1,3-dibenzylidenesorbitol, 2,4-dibenzylidenesorbitol, Examples include 3-di (P-ethyldibenzylidene) sorbitol and 2,4-di (P-ethyldibenzylidene) sorbitol.
- organic phosphate compound examples include sodium bis (4-t-butylphenyl) phosphate, sodium 2,2′-methylenebis (4,6-di-t-butylphenyl) phosphate, and cyclic organic phosphate ester
- examples thereof include a mixture selected from basic polyvalent metal salts and alkali metal carboxylates, alkali metal ⁇ -diketonates and alkali metal ⁇ -ketoacetate organic carboxylic acid metal salts.
- aliphatic carboxylic acid amides, aliphatic carboxylates and sorbitol compounds are preferably used from the viewpoint of transparency and heat resistance.
- the biaxially oriented PET film of the present invention preferably has a plane orientation coefficient (fn) in the film of 0.15 or more and 0.185 or less. If it is less than 0.15, the orientation may be lowered and sufficient low thermal expansion may not be achieved. If it exceeds 0.185, the film is highly oriented and the film-forming property is deteriorated, and film formation may be difficult.
- it is important to achieve both low thermal expansion and low thermal shrinkage, and it is necessary to highly orient the film for low thermal expansion.
- the plane orientation coefficient ( Although fn) can be controlled by the film forming conditions, the heat treatment conditions are particularly affected. Since the thermal crystallization is promoted when the heat treatment temperature is increased, the plane orientation coefficient (fn) tends to increase.
- the biaxially oriented polyethylene terephthalate film of the present invention preferably has a film thickness of 25 to 150 ⁇ m. If the thickness is less than 25 ⁇ m, the film is lowered, and when it is made into an organic EL or solar cell, it may be easily wrinkled. When it exceeds 150 ⁇ m, the film may not be flexible and the flexibility may be impaired.
- the film thickness is more preferably 75 to 125 ⁇ m. The film thickness can be controlled by the film forming conditions.
- the biaxially oriented PET film production method of the present invention will be specifically described, but the present invention is not construed as being limited to only those obtained by such examples.
- PET is manufactured by one of the following processes. That is, (1) A process of obtaining terephthalic acid and ethylene glycol as raw materials, obtaining a low molecular weight PET or oligomer by direct esterification, and then obtaining a polymer by polycondensation reaction using antimony trioxide or a titanium compound as a catalyst. And (2) A process in which dimethyl terephthalate and ethylene glycol are used as raw materials, a low molecular weight product is obtained by transesterification, and a polymer is obtained by subsequent polycondensation reaction using antimony trioxide or a titanium compound as a catalyst.
- the reaction proceeds even without a catalyst, but the transesterification usually proceeds using a compound such as manganese, calcium, magnesium, zinc, lithium and titanium as a catalyst.
- a phosphorus compound may be added for the purpose of inactivating the catalyst used in the reaction.
- the PET resin used in the present invention is produced by the above-described method.
- a method of further increasing the degree of polymerization by performing solid phase polymerization is preferably used.
- the solid phase polymerization method is not particularly limited, but the solid phase polymerization of PET is usually performed under reduced pressure or in a nitrogen atmosphere, but any method may be used.
- the solid state polymerization temperature is preferably 180 ° C. or higher and 240 ° C. or lower, more preferably 190 ° C. or higher and 230 ° C. or lower. When the solid phase polymerization temperature is less than 180 ° C., the reaction rate is slow and the productivity is deteriorated.
- the solid-phase polymerization temperature can be arbitrarily set within the above range, but as a general tendency, when polymerized at a low temperature, the reaction rate decreases and the time required to increase to the expected intrinsic viscosity becomes longer. However, the highest intrinsic viscosity increases. Conversely, when the polymerization temperature is raised, the reaction rate increases, but at the same time, the degradation reaction also proceeds, so that the maximum intrinsic viscosity is lowered. In the actual process, the reaction temperature may be set in consideration of the intrinsic viscosity and reaction time expected in the solid phase polymerization temperature range.
- the inside of the supply unit is supplied in an inert gas, preferably a flowing nitrogen atmosphere, and oxygen in the supply unit is supplied.
- the concentration is preferably 0.1 to 0.7% by volume.
- the PET resin may be oxidatively decomposed to lower the intrinsic viscosity.
- it is 0.1 volume% to 0.5 volume%.
- inorganic particles and organic particles such as clay, mica, titanium oxide, calcium carbonate, carion, talc , Wet silica, dry silica, colloidal silica, inorganic particles such as calcium phosphate, barium sulfate, alumina and zirconia, organic particles containing acrylic acid, styrene resin, thermosetting resin, silicone, imide compound, and the like, and It is also a preferred aspect to add particles (so-called internal particles) that are precipitated by a catalyst or the like added during the PET polymerization reaction.
- the inert particles are contained in the PET which is a constituent component of the biaxially oriented PET film of the present invention
- the inert particles are dispersed in the form of slurry in a predetermined ratio in ethylene glycol, and this ethylene glycol is added during polymerization.
- the method is preferred.
- inert particles for example, water sol or alcohol sol particles obtained at the time of synthesis of the inert particles are added without drying once, the dispersibility of the particles is good. It is also effective to mix an aqueous slurry of inert particles directly with PET pellets and knead them into PET using a vented biaxial kneading extruder.
- a master pellet of a high concentration of inert particles is prepared by the above method, and this is diluted with PET that does not substantially contain inert particles during film formation.
- a method for adjusting the content of the active particles is effective.
- the obtained pellets and the raw material PET chip are dried under reduced pressure for 3 hours or more at a temperature of 180 ° C., and then heated to a temperature of 270 to 320 ° C. under a nitrogen stream or under reduced pressure so that the intrinsic viscosity does not decrease.
- the film is supplied to the extruder so as to have a film composition, melt-extruded from a slit-shaped die, and cooled and solidified on a casting roll to obtain an unstretched film.
- filters for example, filters made of materials such as sintered metal, porous ceramic, sand and wire mesh, in order to remove foreign substances and denatured polymers.
- a gear pump When laminating films, a plurality of different polymers are melt laminated using two or more extruders and manifolds or merging blocks.
- the raw material PET chip is preferably 0.70 to 1.40 dl / g so that the film IV is in a preferable range.
- the IV of the resin constituting the film of the present invention is in a preferred range, the IV of the resin constituting the film may be adjusted by mixing raw material PET chips of different IVs.
- additives such as compatibilizers, plasticizers, weathering agents, antioxidants, thermal stabilizers, lubricants, antistatic agents, whitening agents, coloring, as long as the effects of the present invention are not impaired.
- Agents, conductive agents, ultraviolet absorbers, flame retardants, flame retardant aids, pigments and dyes may be added.
- the sheet-like material molded as described above is biaxially stretched.
- the film is stretched biaxially in the longitudinal direction and the width direction and heat-treated.
- a sequential biaxial stretching method such as stretching in the width direction after stretching in the longitudinal direction, a simultaneous biaxial stretching method in which the longitudinal direction and the width direction are simultaneously stretched using a simultaneous biaxial tenter, etc.
- Examples include a method in which the sequential biaxial stretching method and the simultaneous biaxial stretching method are combined.
- it is desirable that the heat treatment after the stretching process is effectively performed without causing relaxation of molecular chain orientation due to excessive heat treatment.
- the stretching temperature is preferably in the range of (glass transition temperature (hereinafter referred to as Tg)) to (Tg + 40) ° C., more preferably in the range of (Tg + 5) to (Tg + 30) ° C., and still more preferably in the range of (Tg + 10) to (Tg + 20).
- Tg glass transition temperature
- It is preferably stretched and cooled with a cooling roll group having a temperature of 20 to 50 ° C. after stretching.
- the stretching orientation can be enhanced, and the stretching can be effectively performed in the next step.
- the specific preheating temperature is preferably 90 ° C. to 110 ° C., more preferably 95 ° C. to 100 ° C.
- the stretching temperature is preferably in the range of (preheating temperature ⁇ 5) to (preheating temperature + 5) ° C.
- the draw ratio is preferably 3.0 to 6.0 times, more preferably 3.5 to 6.0 times, and still more preferably 3.7 to 6.0 times.
- the stretched film is subjected to heat setting treatment and relaxation annealing treatment under tension.
- the intrinsic viscosity (IV) of the resin constituting the film is increased, so that the thermal expansion coefficient can be reduced, but the thermal shrinkage is increased.
- the heat setting after stretching is performed in two or more steps having different temperatures and performed stepwise. It is preferable to perform the above-described heat setting treatment because it is possible to suppress orientation relaxation due to heat treatment, promote oriented crystals, and improve thermal dimensional stability.
- the heat setting temperature in the previous stage hereinafter sometimes abbreviated as Ths1 (° C.) is 150 to 210 ° C.
- the heat setting temperature in the last stage hereinafter sometimes abbreviated as Ths 2) (° C.) Is more than 210 and is preferably 245 ° C. or less.
- former stage represents the process except the last stage of the heat setting process process implemented by a 2 or more-step process.
- the first and second stages correspond to the previous stage
- the third stage corresponds to the final stage.
- the heat setting temperature Ths1 in the previous stage is a temperature between the glass transition temperature (Tg) and the melting temperature (Tm) of PET, the crystallization is easily promoted and the orientation relaxation is difficult to proceed. This is preferable because microcrystals having a small size are prepared from the body.
- the temperature is preferably 150 to 210 ° C, more preferably 150 to 200 ° C, still more preferably 165 to 200 ° C, and most preferably 165 to 190 ° C. .
- the heat-setting treatment in the previous stage by setting the heat-setting treatment in the previous stage to a temperature range in which the orientation relaxation is unlikely to occur, a microcrystal having a small size is formed from the precursor of the crystal structure. Molecular strain is removed. Subsequently, the entire internal strain is removed by the final heat setting process, and thermal shrinkage can be reduced. That is, it is possible to reduce thermal shrinkage by suppressing an increase in the thermal expansion coefficient due to orientation relaxation.
- the heat setting treatment in the film of the present invention is performed in three or more stages, the heat setting temperature is gradually increased from the first stage, the second stage, and the third stage within the preferable temperature range of Ths1 and Ths2 described above. It is preferable to raise the temperature.
- the heat setting time is preferably 1 second to 1000 seconds, more preferably 1 second to 60 seconds, and still more preferably 1 second to 30 seconds for each of the preceding heat setting stages.
- the heat setting time in the final stage is preferably 1 second to 1000 seconds, more preferably 1 second to 60 seconds, and still more preferably 1 second to 10 seconds.
- the total heat setting time does not exceed 2000 seconds, more preferably 120 seconds, still more preferably 30 seconds, and particularly preferably 20 seconds.
- the heat setting treatment step is preferably a step of two or more steps, but considering the time of the whole heat setting, it is more preferably two steps or more and three steps or less.
- the relaxation rate (hereinafter sometimes abbreviated as Rxhs) is preferably within 3 times the relaxation rate (hereinafter abbreviated as Rxa) of the relaxation annealing performed after the cooling step.
- the relaxation rate is a value of the ratio with respect to the difference from the width after the processing on the basis of the width before the treatment. For example, when the relaxation rate is 2 mm, 2% of 2% is relaxed when the width before the treatment is 100 mm. It shows that it becomes 98 mm after processing.
- Rxhs with respect to Rxa exceeds 3 times, orientation relaxation proceeds too much, and the thermal expansion coefficient may deteriorate.
- Rxhs is preferably 0 to 9%.
- the film edge is removed and wound on the core.
- the wound biaxially stretched PET film is preferably conveyed under tension under a certain temperature condition to remove the distortion of the molecular structure and reduce the thermal shrinkage rate.
- the relaxation annealing temperature is preferably lower than the final heat setting temperature Ths2, more specifically, more than 200 ° C. and more preferably 235 ° C. or less, and further preferably 205 to 220 ° C.
- the relaxation annealing treatment time is preferably 1 to 120 seconds, more preferably 5 to 90 seconds, and further preferably 20 to 60 seconds.
- the relaxation rate (Rxa) in the relaxation annealing treatment is preferably 0.1 to 3%. If Rxa is less than 0.1%, the relaxation effect does not appear, and the distortion of the molecular structure is not completely removed, so that thermal shrinkage may not be reduced.
- Rxa is greater than 3%, orientation relaxation may proceed too much and the thermal expansion coefficient may deteriorate.
- Rxa can be set by the stretching tension and the clip width in the relaxation annealing process. The film is annealed while being conveyed at a speed of 10 to 300 m / min, and the biaxially oriented PET film of the present invention can be obtained.
- the PET film and the PET film roll may be subjected to arbitrary processing such as molding, surface treatment, laminating, coating, printing, embossing and etching as necessary.
- the inside of the chamber is evacuated to 5 ⁇ 10 ⁇ 4 Pa before plasma discharge, and then argon and oxygen are introduced into the chamber to a pressure of 0.3 Pa (oxygen).
- the partial pressure was 3.7 mPa), and power was applied at a power density of 2 W / cm 2 using indium oxide containing 36% by mass of tin oxide as a target (made by Sumitomo Metal Mining Co., Ltd., density 6.9 g / cm 3 ).
- a transparent conductive layer made of ITO having a film thickness of 250 nm by a direct current magnetron sputtering method and further forming an organic EL light emitting layer it can be used as an organic EL display substrate and an organic EL lighting substrate. Moreover, it can be used as a flexible solar cell substrate by forming a power generation layer. Moreover, it can use as a barrier substrate by forming a barrier layer on the obtained film by a coating method, a vacuum evaporation method, a chemical vapor deposition (CVD) method, etc., for example.
- the film of the present invention has high thermal dimensional stability and is excellent in transparency, it can be suitably used for organic EL substrate applications, flexible solar cell substrate applications, and barrier substrate applications.
- the characteristic value measurement method and the effect evaluation method in the present invention are as follows.
- Crystallization index ( ⁇ Tcg (° C.)), crystallinity ( ⁇ c) In accordance with JIS K7121 (1987), using a DSC (RDC 6220) manufactured by Seiko Instruments as a differential scanning calorimeter and a disk station (SSC / 5200) manufactured by Seiko Instruments Inc., a 5 mg sample was made of an aluminum pan and pan cover. The temperature was increased from 25 ° C. to 300 ° C. at a temperature increase rate of 10 ° C./min in a nitrogen atmosphere. Then, it cools rapidly using liquid nitrogen, and it heats up again at a speed
- the glass transition temperature (Tg) and the cold crystallization temperature (Tcc) are obtained as the glass transition temperature (Tg) and the cold crystallization temperature (Tcc) in the second temperature raising process, and the following equations are used.
- the crystallization index ( ⁇ Tcg) was calculated.
- ⁇ Tcg Tcc ⁇ Tg
- the crystallinity ( ⁇ c) was calculated from the following formula using the heat of fusion ( ⁇ H m ) and the cold heat of crystallization ( ⁇ H c ) in the first temperature raising process.
- ⁇ c ( ⁇ H m ⁇ H c ) / ⁇ H m 0
- ⁇ H m 0 is the heat of fusion of the complete crystal and was calculated using 140.1 J / g (reference document Wunderlich B “Thermal analysis of Polymeric Materials”).
- T-meta Minute melting peak temperature
- Intrinsic viscosity 1.2 g of film is dissolved in 100 ml of orthochlorophenol, and the intrinsic viscosity is calculated based on the following formula from the solution viscosity measured at a temperature of 25 ° C.
- ⁇ sp / C [ ⁇ ] + K [ ⁇ ] 2 ⁇ C
- ⁇ sp (solution viscosity / solvent viscosity) ⁇ 1
- C is the weight of dissolved polymer per 100 ml of solvent (g / 100 ml, usually 1.2)
- K is the Huggins constant (assuming 0.343) It is.
- the solution viscosity and solvent viscosity are measured using an Ostwald viscometer.
- Measurement device “TMA / SS6000” manufactured by Seiko Instruments Inc. ⁇ Sample size: width 4mm, length 20mm ⁇ Temperature condition: Increased from 30 ° C. to 170 ° C. at 5 ° C./min and hold for 10 minutes ⁇ Further decrease in temperature from 170 ° C. to 50 ° C. at 5 ° C./min and hold for 20 minutes ⁇ Load condition: 29.4 mN constant here
- the thermal expansion coefficient measurement range temperature is 170 ° C. to 50 ° C. when the temperature is lowered.
- the thermal expansion coefficient was calculated from the following formula, and was obtained as an average value of three samples.
- Thermal contraction rate at a temperature of 180 ° C. The thermal contraction rate was measured using the following apparatus and conditions.
- ⁇ Length measuring device Universal projector
- Material size Test length 150mm x Width 10mm
- Heat treatment equipment Gear oven
- Heat treatment conditions 180 ° C., 30 minutes
- Load 3 g
- Calculation method Draw marked lines at 100 mm intervals on the sample before heat treatment, measure the distance between marked lines after heat treatment, calculate the heat shrinkage from the change in distance between marked lines before and after heating, and measure the dimensional stability. It was. Measurement was carried out for each film in the longitudinal direction and the width direction, and the average value was evaluated.
- Thermal dimensional stability The biaxially oriented polyethylene terephthalate film of the present invention is cut into a width of 100 mm and a length of 100 mm, and an organic flexible device is assumed to form the following transparent conductive layer.
- the surface resistivity at that time Thermal dimensional stability was evaluated from dimensional changes.
- ⁇ Process suitability Before the plasma discharge, the chamber is evacuated to 5 ⁇ 10 ⁇ 4 Pa, and then argon and oxygen are introduced into the chamber to a pressure of 0.3 Pa (oxygen partial pressure is 3.7 mPa) and oxidized as a target.
- a transparent conductive layer having a surface resistivity of 30 ⁇ / ⁇ or more and less than 50 ⁇ / and containing cracks was formed.
- D The transparent conductive layer could not be formed due to surface resistivity of 125 ⁇ / ⁇ or more, or curl or width shrinkage of the film.
- Curling property A biaxially oriented polyethylene terephthalate film on which a transparent conductive layer was formed was placed in an oven at a temperature of 180 ° C.
- the amount of warpage is less than 5.0 mm.
- the value indicated by polyethylene terephthalate having an intrinsic viscosity of 0.65 was a predetermined value). Therefore, the reaction system was purged with nitrogen and returned to normal pressure to stop the polycondensation reaction, discharged into cold water in the form of a strand, and immediately cut to obtain PET pellet X 0.65 of polyethylene terephthalate having an intrinsic viscosity of 0.65. It was.
- Reference Example 2 Using a rotary vacuum polymerization apparatus, the PET pellet X 0.65 obtained in Reference Example 1 was subjected to solid phase polymerization at a temperature of 230 ° C. under a reduced pressure of 0.1 kPa for 15 hours, and the intrinsic viscosity was 0.77. PET pellet X 0.77 was obtained.
- PET pellet X 0.77 having an intrinsic viscosity of 0.77 obtained in Reference Example 2 was supplied to an extruder heated to a temperature of 280 ° C. after drying under reduced pressure at a temperature of 180 ° C. for 3 hours. Introduced into die die. Next, from the inside of the T die die, it was extruded into a sheet shape to obtain a molten single layer sheet, which was closely cooled and solidified by an electrostatic application method on a drum maintained at a surface temperature of 25 ° C. to obtain an unstretched single layer film.
- the obtained unstretched monolayer film was preheated with a heated roll group, then stretched 3.5 times in the longitudinal direction at a temperature of 88 ° C., and cooled and uniaxially stretched with a roll group at a temperature of 25 ° C.
- a film was obtained.
- the obtained uniaxially stretched film is guided to a preheating zone at a temperature of 90 ° C. in the tenter while holding both ends of the film with clips, and continuously 3.7 in the width direction perpendicular to the longitudinal direction in the heating zone at a temperature of 95 ° C.
- the film was stretched twice.
- the first stage (previous stage) heat setting temperature (Ths1) was applied at 180 ° C.
- a relaxation annealing treatment was performed at a relaxation rate of 1% while transporting at a temperature of 205 ° C. for 30 seconds at a film speed of 30 m / min to obtain a biaxially stretched polyethylene terephthalate film.
- the film had excellent thermal dimensional stability.
- Example 2 A biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the first stage heat setting temperature (Ths1) was 160 ° C. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 3 A biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the first stage heat setting temperature (Ths1) was 200 ° C. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 4 A biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the second stage (final stage) heat setting temperature (Ths2) was 215 ° C. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 5 A biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the second stage (final stage) heat setting temperature (Ths2) was 235 ° C. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 6 A biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the PET pellet X 0.70 obtained in Reference Example 3 was used. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 7 A biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the PET pellet X 0.90 obtained in Reference Example 4 was used. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 8 In the same manner as in Example 1 except that 95 parts by weight of PET pellet X 0.77 obtained in Reference Example 2 and 5 parts by weight of PET pellet Y 0.77 obtained in Reference Example 6 were mixed. A polyethylene terephthalate film was obtained. When the obtained polyethylene terephthalate film was evaluated, it had the property which was excellent in thermal dimensional stability.
- Example 9 The heat setting is performed in four steps, the first heat setting is performed at a heat fixing temperature (Ths1) of 180 ° C. for 5 seconds, and the second heat setting is performed at a heat fixing temperature (Ths1) of 190 ° C. for 5 seconds.
- the heat fixation was performed at a heat fixation temperature (Ths1) of 200 ° C. for 5 seconds, and the heat fixation at the fourth stage (final stage) was carried out at a heat fixation temperature (Ths2) of 225 ° C. for 8 seconds.
- Ths2 225 ° C. for 8 seconds.
- a biaxially oriented polyethylene terephthalate film was obtained by this method. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 10 A polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the first stage heat setting temperature (Ths1) was 210 ° C. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 11 A polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the final heat setting temperature (Ths2) was 245 ° C. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 12 Two extruders were used, and 30 parts by weight of PET pellet X 0.65 obtained in Reference Example 1 and 70 parts by weight of PET pellet X 0.70 obtained in Reference Example 3 were fed to the main extruder.
- the PET pellet X 0.77 obtained in Reference Example 2 was supplied to the sub-extruder.
- a biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the melted three-layer laminate was extruded from within the T base die. When the obtained polyethylene terephthalate film was evaluated, it had the characteristic that thermal dimensional stability was excellent.
- Example 1 A polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the first stage heat setting temperature (Ths1) was 145 ° C. When the obtained polyethylene terephthalate film was evaluated, the heat shrinkage ratio was increased and the thermal dimensional stability was poor.
- Example 2 A polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the final heat setting temperature (Ths2) was 200 ° C. When the obtained polyethylene terephthalate film was evaluated, the heat shrinkage ratio was increased and the thermal dimensional stability was poor.
- Example 3 A biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the PET pellet X 0.65 obtained in Reference Example 1 was used. When the obtained polyethylene terephthalate film was evaluated, the amount of change in haze was large and the optical properties were poor.
- Example 4 A biaxially oriented polyethylene terephthalate film was obtained in the same manner as in Example 1 except that the PET pellet X 1.20 obtained in Reference Example 5 was used. When the obtained polyethylene terephthalate film was evaluated, the heat shrinkage ratio was increased and the thermal dimensional stability was poor.
- Example 5 Polyethylene terephthalate in the same manner as in Example 1 except that heat setting was performed at a temperature of 235 ° C. for 5 seconds in a heat treatment zone in the tenter, followed by a relaxation treatment in the 2% width direction at a temperature of 235 ° C. A film was obtained. When the obtained polyethylene terephthalate film was evaluated, the thermal expansion coefficient deteriorated and the thermal dimensional stability was poor.
- Example 6 Polyethylene terephthalate in the same manner as in Example 1 except that heat setting was performed in a heat treatment zone in the tenter for 5 seconds at a temperature of 210 ° C., followed by a relaxation treatment in the 2% width direction at a temperature of 210 ° C. A film was obtained. When the obtained polyethylene terephthalate film was evaluated, the heat shrinkage deteriorated and the thermal dimensional stability was poor.
- the biaxially oriented polyethylene terephthalate film of the present invention can be applied to a base film for flexible devices having excellent thermal dimensional stability and curling properties. Therefore, it may be used to obtain organic EL displays, electronic paper, organic EL lighting, organic solar cells, dye-sensitized solar cells, barrier films, and the like.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
(1)少なくともポリエチレンテレフタレート樹脂を用いてなる二軸配向フィルムであって、かつ結晶化度(Χc)が0.35を超えて0.50以下であって、かつフィルムを構成する樹脂の固有粘度(IV)が0.66~1.0dl/gであって、かつフィルム長手方向およびフィルム幅方向の50~170℃の温度における熱膨張係数がそれぞれ0~29pm/℃であって、かつフィルム長手方向およびフィルム幅方向の180℃における熱収縮率がそれぞれ-0.5%~1.0%であることを特徴とする二軸配向ポリエチレンテレフタレートフィルム。
(2)フィルムを構成する樹脂の固有粘度(IV)が0.68~1.0dl/gである(1)に記載の二軸配向ポリエチレンテレフタレートフィルム。
(3)フィルム長手方向およびフィルム幅方向の50~170℃の温度における熱膨張係数がそれぞれ0~25ppm/℃である(1)または(2)に記載の二軸配向ポリエチレンテレフタレートフィルム。
(4)微小融解ピーク温度(T-meta)が210~240℃である(1)~(3)のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルム。
(5)フィルムヘイズが0~3%である(1)~(4)のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルム。
(6)180℃で30分間加熱処理した際のフィルムヘイズの変化量が0.0~3.0%であることを特徴とする(1)~(5)のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルム。
(7)ポリエチレンテレフタレート樹脂を溶融押出ししつつ、冷却固化して未延伸フィルムとし、次いで、該未延伸フィルムを二軸延伸した後、温度の異なる2段以上の工程で熱固定を行い、前記熱固定の前段の熱固定温度Ths1(℃)が150~200℃、最終段の熱固定温度Ths2(℃)が210~240℃であり、熱固定を行った後35℃以下の温度で冷却し、その後弛緩アニール処理を200℃を超えて235℃以下で行うことにより得られることを特徴とする(1)~(6)のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルム。
(8)また、本発明は、ポリエチレンテレフタレート樹脂を溶融押出ししつつ、冷却固化して未延伸フィルムとし、次いで、該未延伸フィルムを二軸延伸した後、温度の異なる2段以上の工程で熱固定を行い、前記熱固定の前段の熱固定温度Ths1(℃)が150~200℃、最終段の熱固定温度Ths2(℃)が210~240℃であり、熱固定を行った後35℃以下の温度で冷却し、その後弛緩アニール処理を200℃を超えて235℃以下で行うことを特徴とする(1)~(4)のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルムの製造方法。
(9)(1)~(7)のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルムを用いてなる有機EL基板用フィルム。
(10)(1)~(7)のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルムを用いてなるフレキシブル太陽電池基板用フィルム。
(11)(1)~(7)のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルムを用いてなるバリア基板用フィルム。
(物性の測定方法ならびに効果の評価方法)
本発明における特性値の測定方法並びに効果の評価方法は、次のとおりである。
JIS K7121(1987年)に従って、示差走査熱量計として、セイコーインスツルメンツ社製DSC(RDC6220)、データ解析装置として同社製ディスクステーション(SSC/5200)を用いて、試料5mgをアルミニウム製パン、パンカバーを用いて封入し、窒素雰囲気中で25℃から300℃まで、昇温速度10℃/分で昇温した。その後、液体窒素を用いて急冷し、再び窒素雰囲気中で20℃から300℃まで10℃/分の速度で昇温する。本発明において、ガラス転移温度(Tg)と冷結晶化温度(Tcc)は、2度目の昇温過程でのガラス転移温度(Tg)と冷結晶化温度(Tcc)として求め、下記の式を用いて結晶化指数(ΔTcg)を算出した。
ΔTcg=Tcc-Tg
1度目の昇温過程における融解熱量(ΔHm)と冷結晶化熱量(ΔHc)を用い下記式より結晶化度(Χc)を算出した。
Χc=(ΔHm-ΔHc)/ΔHm 0
ここで、ΔHm 0は完全結晶体融解熱量であり、140.1J/g(参考文献Wunderlich B “Thermal analysis of Polymeric Materials”)を用いて算出した。
JIS K7121(1987年)に従って、示差走査熱量計として、セイコーインスツルメンツ社製DSC(RDC220)、データ解析装置として同社製ディスクステーション(SSC/5200)を用いて、試料5mgをアルミニウム製受皿上、25℃から300℃まで、昇温速度20℃/分で昇温した。そのとき、観測される融解の吸熱ピークのピーク温度を融点(Tm)とし、Tmより低温側でTm近傍にある(150℃以上Tm以下)微小融解ピーク温度をT-metaとした。(なお、T-metaは、熱固定温度に対応する熱履歴のため、DSCのファーストランで観測され、一度Tm以上に昇温し熱履歴を消したセカンドランでは観測されないことから確認できる。)。
オルトクロロフェノール100mlにフィルムを1.2g溶解させ、その溶液を25℃の温度で測定した溶液粘度から、下式に基づいて固有粘度を計算する。
ηsp/C=[η]+K[η]2×C
ここで、ηsp=(溶液粘度/溶媒粘度)-1であり、Cは溶媒100mlあたりの溶解ポリマー重量(g/100ml、通常1.2)であり、Kはハギンス定数(0.343とする)である。また、溶液粘度と溶媒粘度は、オストワルド粘度計を用いて測定する。
JIS K7197(1991年)に準拠し、下記の条件で、試料数3にてフィルムの長手方向および幅方向それぞれについて測定をして、平均値をとり、長手方向と幅方向の熱膨張係数とした。なお、本発明において、フィルムの長手方向、幅方向が既知の場合はそれにもとづき以下の方法で求める。一方、フィルムの長手方向、幅方向が既知ではない場合であって、フィルムの形状が略長方形である場合は、長辺方向を長手方向、その直交方向を幅方向とみなして以下の方法で求めてもよい(フィルムの形状が略正方形である場合は、各辺に平行な方向のいずれを長手方向、幅方向とみなしてもよい)。
・測定装置 :セイコーインスツルメンツ社製“TMA/SS6000”
・試料サイズ:幅4mm、長さ20mm
・温度条件 :5℃/minで30℃から170℃に昇温し、10分間保持
・さらに5℃/minで170℃から50℃まで降温して20分保持
・荷重条件 :29.4mN一定
ここで、熱膨張係数測定範囲温度は、降温時の170℃から50℃である。熱膨張係数は、下記式から算出し、試料数3点の平均の値として求めた。
熱膨張係数[ppm/℃]=106×{(170℃時の寸法mm)-(50℃時の寸法mm)}/{20mm×(170℃-50℃)}。
下記装置および条件で、熱収縮率測定を行った。
・測長装置 :万能投影機
・資料サイズ :試長150mm×幅10mm
・熱処理装置 :ギアオーブン
・熱処理条件 :180℃、30分
・荷重 :3g
・算出方法
熱処理前にサンプルに100mmの間隔で標線を描き、熱処理後の標線間距離を測定し、加熱前後の標線間距離の変化から熱収縮率を算出し、寸法安定性の指標とした。測定は、各フィルムとも長手方向および幅方向に5サンプル実施して平均値で評価を行った。
フィルムから10cm×10cmの試料を切り出して、JISK7105(1985年)に基づいて、全自動直読ヘイズコンピューターHGM-2DP(スガ試験機(株)製)を用いて測定した。これを無作為に10点くり返し測定し、その平均値を該フィルムのヘイズ値とした。
フィルムから10cm×10cmの試料を切り出し、180℃に加熱したオーブンにて30分間加熱処理を行う。その後のフィルムヘイズを上記方法で測定し、熱処理後のフィルムヘイズを得て下式に基づいてフィルムヘイズの変化量を算出し、光学特性を評価した。評価Cが不合格である。
フィルムヘイズの変化量=(熱処理後のフィルムヘイズ)-(熱処理前のフィルムヘイズ)
A:フィルムヘイズの変化量が1.5%以下である。
B:フィルムヘイズの変化量が1.5%を超えて3%以下である。
C:フィルムヘイズの変化量が3%を超える。
本発明の二軸配向ポリエチレンテレフタレートフィルムを、幅100mm×長さ100mmに切り出し、有機フレキシブルデバイスを想定して、下記の透明導電層を形成し、そのときの表面抵抗率や寸法変化から熱寸法安定性を評価した。
・工程適性
プラズマの放電前にチャンバー内を5×10-4Paまで排気した後、チャンバー内にアルゴンと酸素を導入して圧力を0.3Pa(酸素分圧は3.7mPa)としターゲットとして酸化スズを36質量%含有した酸化インジウム(住友金属鉱山社製、密度6.9g/cm3)に用いて2W/cm2の電力密度で電力を印加して直流マグネトロンスパッタリング法により、膜厚250nmのITOからなる透明導電層を形成した。透明導電層は二軸配向ポリエチレンテレフタレートフィルムの熱膨張が大きいとクラックが入り表面抵抗率が低下する。下記の基準に従って評価した。評価Dが不合格である。
AA:表面抵抗率が30Ω/□未満で問題なく透明導電層が形成された。
A:表面抵抗率が30Ω/□以上、50Ω/未満でクラックを含む透明導電層が形成された。
B:表面抵抗率が50Ω/□以上、100Ω/未満でクラックの多い透明導電層が形成された。
C:表面低効率が100Ω/□以上、125Ω/未満でクラックの多い透明導電層が形成された。
D:表面抵抗率が125Ω/□以上か、フィルムのカールや幅縮みで透明導電層が形成できなかった。
・カール性
透明導電層を形成した二軸配向ポリエチレンテレフタレートフィルムを温度180℃で30分間オーブンに置いた。その後、温度23℃、65%RHの条件で30分放置してから、4隅のカール状態を観測し、4隅の反り量(mm)の平均値を求めて、下記の基準に従って評価した。カールは熱膨張係数と熱収縮率の両方が小さいほど良好となる。Dが不合格である。
AA:反り量が5.0mm未満である。
A:反り量が5.0mm以上、7.5mm未満である。
B:反り量が7.5mm以上、10mm未満である。
C:反り量が10mm以上、12.5mm未満である。
D:反り量が12.5mm以上である。
テレフタル酸ジメチル194質量部とエチレングリコール124質量部とをエステル交換反応装置に仕込み、内容物を140℃の温度に加熱して溶解した。その後、内容物を撹拌しながら、酢酸マグネシウム四水和物0.1質量部および三酸化アンチモン0.03質量部を加え、これに140~230℃の温度でメタノールを留出しつつエステル交換反応を行った。次いで、リン酸トリメチルの5質量%エチレングリコール溶液を、1質量部(リン酸トリメチルとして0.05質量部)添加した。リン酸トリメチルのエチレングリコール溶液を添加すると、反応内容物の温度が低下する。そこで、余剰のエチレングリコールを留出させながら反応内容物の温度が230℃の温度に復帰するまで撹拌を継続した。このようにして、エステル交換反応装置内の反応内容物の温度が230℃の温度に達した後、反応内容物を重合装置へ移行した。移行後、反応系を230℃の温度から290℃の温度まで徐々に昇温するとともに、圧力を0.1kPaまで下げた。最終温度、最終圧力到達までの時間はともに60分とした。最終温度、最終圧力に到達した後、2時間(重合を始めて3時間)反応させたところ、重合装置の撹拌トルクが所定の値(重合装置の仕様によって具体的な値は異なるが、本重合装置において固有粘度0.65のポリエチレンテレフタレートが示す値を所定の値とした)を示した。そこで、反応系を窒素パージし常圧に戻して重縮合反応を停止し、冷水にストランド状に吐出し、直ちにカッティングして、固有粘度0.65のポリエチレンテレフタレートのPETペレットX0.65を得た。
回転型真空重合装置を用いて、上記の参考例1で得られたPETペレットX0.65を0.1kPaの減圧下230℃の温度で15時間固相重合を行い、固有粘度が0.77であるPETペレットX0.77を得た。
回転型真空重合装置を用いて、上記の参考例1で得られたPETペレットX0.65を0.1kPaの減圧下230℃の温度で5時間固相重合を行い、固有粘度が0.70であるPETペレットX0.70を得た。
回転型真空重合装置を用いて、上記の参考例1で得られたPETペレットX0.65を0.1kPaの減圧下230℃の温度で100時間固相重合を行い、固有粘度が0.90であるPETペレットX0.90を得た。
回転型真空重合装置を用いて、上記の参考例1で得られたPETペレットX0.65を0.1kPaの減圧下230℃の温度で200時間固相重合を行い、固有粘度が1.20であるPETペレットX1.20を得た。
リン酸トリメチルの代わりに、結晶核剤としてジメチルフェニルホスホネート(DPPO)を0.35質量部加えること以外は参考例2と同様の方法でエステル交換反応と重合反応を行い、固有粘度が0.77の結晶化速度を調整したPETペレットY0.77を得た。
280℃の温度に加熱された押出機に、参考例2で得られた固有粘度0.77のPETペレットX0.77を180℃の温度で3時間減圧乾燥した後に供給し、窒素雰囲気下Tダイ口金に導入した。次いで、Tダイ口金内から、シート状に押出して溶融単層シートとし、表面温度25℃に保たれたドラム上に静電印加法で密着冷却固化させて未延伸単層フィルムを得た。
1段目の熱固定温度(Ths1)を160℃とした以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
1段目の熱固定温度(Ths1)を200℃とした以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
2段目(最終段)の熱固定温度(Ths2)を215℃とした以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
2段目(最終段)の熱固定温度(Ths2)を235℃とした以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
参考例3で得られたPETペレットX0.70を使う以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
参考例4で得られたPETペレットX0.90を使う以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
参考例2で得られたPETペレットX0.77を95重量部と参考例6で得られたPETペレットY0.77を5重量部混ぜて使用する以外は、実施例1と同様の方法でポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ熱寸法安定性が優れる特性を有していた。
熱固定を4段で行い、1段目の熱固定を熱固定温度(Ths1)180℃で5秒間、さらに2段目の熱固定を熱固定温度(Ths1)190℃で5秒間、3段目の熱固定を熱固定温度(Ths1)200℃で5秒間行い、4段目(最終段)の熱固定を熱固定温度(Ths2)225℃で8秒間行った以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
(実施例10)
1段目の熱固定温度(Ths1)を210℃とした以外は、実施例1と同様の方法でポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
(実施例11)
最終段の熱固定温度(Ths2)を245℃とした以外は、実施例1と同様の方法でポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
(実施例12)
押出機を2台使用し、主押出機に参考例1で得られたPETペレットX0.65を30重量部と参考例3で得られたPETペレットX0.70を70重量部に供給し、副押出機に参考例2で得られたPETペレットX0.77を供給した。次いで種押出機に供給した成分層の両側表層に副押出機に供給した成分層が厚み比率で、副押出機の成分層:主押出機の成分層:副押出機の成分層=3:14:3となるように合流させ、T台口金内より溶融三層積層共に押し出しを行った以外は実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱寸法安定性が優れる特性を有していた。
1段目の熱固定温度(Ths1)を145℃とした以外は、実施例1と同様の方法でポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱収縮率が大きくなり熱寸法安定性が劣る特性を有していた。
最終段の熱固定温度(Ths2)を200℃とした以外は、実施例1と同様の方法でポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱収縮率が大きくなり熱寸法安定性が劣る特性を有していた。
参考例1で得られたPETペレットX0.65を使う以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、ヘイズの変化量が大きくなり光学特性が劣る特性を有していた。
参考例5で得られたPETペレットX1.20を使う以外は、実施例1と同様の方法で二軸配向ポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱収縮率が大きくなり熱寸法安定性が劣る特性を有していた。
テンター内の熱処理ゾーンで熱固定を235℃の温度で5秒間の熱処理を施し次いで、235℃の温度で2%幅方向に弛緩処理を行った以外は、実施例1と同様の方法でポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱膨張係数が悪化し、熱寸法安定性が劣る特性を有していた。
テンター内の熱処理ゾーンで熱固定を210℃の温度で5秒間の熱処理を施し次いで、210℃の温度で2%幅方向に弛緩処理を行った以外は、実施例1と同様の方法でポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱収縮が悪化し、熱寸法安定性が劣る特性を有していた。
テンター内の熱処理ゾーンで熱固定を190℃の温度で5秒間の熱処理を施し次いで、190℃の温度で2%幅方向に弛緩処理を行った。そして、弛緩アニール処理温度を180℃とした以外は、実施例1と同様の方法でポリエチレンテレフタレートフィルムを得た。得られたポリエチレンテレフタレートフィルムを評価したところ、熱収縮が大きく悪化し、熱寸法安定性が劣る特性を有していた。
Claims (11)
- 少なくともポリエチレンテレフタレート樹脂を用いてなる二軸配向フィルムであって、かつ結晶化度(Χc)が0.35を超えて0.50以下であって、かつフィルムを構成する樹脂の固有粘度(IV)が0.66~1.0dl/gであって、かつフィルム長手方向およびフィルム幅方向の50~170℃の温度における熱膨張係数がそれぞれ0~29ppm/℃であって、かつフィルム長手方向およびフィルム幅方向の180℃における熱収縮率がそれぞれ-0.5%~1.0%であることを特徴とする二軸配向ポリエチレンテレフタレートフィルム。
- フィルムを構成する樹脂の固有粘度(IV)が0.68~1.0dl/gであることを特徴とする請求項1に記載の二軸配向ポリエチレンテレフタレートフィルム。
- フィルム長手方向およびフィルム幅方向の50~170℃の温度における熱膨張係数がそれぞれ0~25ppm/℃であることを特徴とする請求項1または2に記載の二軸配向ポリエチレンテレフタレートフィルム。
- 微小融解ピーク温度(T-meta)が210~240℃である請求項1~3のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルム。
- フィルムヘイズが0~3%であることを特徴とする請求項1~4のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルム。
- 180℃で30分間加熱処理した際のフィルムヘイズの変化量が0~3.0%であることを特徴とする請求項1~5のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルム。
- ポリエチレンテレフタレート樹脂を溶融押出ししつつ、冷却固化して未延伸フィルムとし、次いで、該未延伸フィルムを二軸延伸した後、温度の異なる2段以上の工程で熱固定を行い、前記熱固定の前段の熱固定温度Ths1(℃)が150~200℃、最終段の熱固定温度Ths2(℃)が210~240℃であり、熱固定を行った後35℃以下の温度で冷却し、その後弛緩アニール処理を200℃を超えて235℃以下で行うことにより得られることを特徴とする請求項1~6のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルム。
- ポリエチレンテレフタレート樹脂を溶融押出ししつつ、冷却固化して未延伸フィルムとし、次いで、該未延伸フィルムを二軸延伸した後、温度の異なる2段以上の工程で熱固定を行い、前記熱固定の前段の熱固定温度Ths1(℃)が150~200℃、最終段の熱固定温度Ths2(℃)が210~240℃であり、熱固定を行った後35℃以下の温度で冷却し、その後弛緩アニール処理を200℃を超えて235℃以下で行うことを特徴とする請求項1~6のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルムの製造方法。
- 請求項1~7のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルムを用いてなる有機EL基板用フィルム。
- 請求項1~7のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルムを用いてなるフレキシブル太陽電池基板用フィルム。
- 請求項1~7のいずれかに記載の二軸配向ポリエチレンテレフタレートフィルムを用いてなるバリア基板用フィルム。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/396,295 US9212268B2 (en) | 2012-08-21 | 2013-07-19 | Biaxially oriented polyethylene terephthalate film and method for producing same |
| CN201380021037.6A CN104245278B (zh) | 2012-08-21 | 2013-07-19 | 双轴取向聚对苯二甲酸乙二醇酯膜及其制造方法 |
| JP2013533803A JP6011539B2 (ja) | 2012-08-21 | 2013-07-19 | 二軸配向ポリエチレンテレフタレートフィルムおよびその製造方法 |
| KR1020147024955A KR102022274B1 (ko) | 2012-08-21 | 2013-07-19 | 2축 배향 폴리에틸렌테레프탈레이트 필름 및 그 제조 방법 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-182010 | 2012-08-21 | ||
| JP2012182010 | 2012-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014030474A1 true WO2014030474A1 (ja) | 2014-02-27 |
Family
ID=50149786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2013/069620 Ceased WO2014030474A1 (ja) | 2012-08-21 | 2013-07-19 | 二軸配向ポリエチレンテレフタレートフィルムおよびその製造方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9212268B2 (ja) |
| JP (1) | JP6011539B2 (ja) |
| KR (1) | KR102022274B1 (ja) |
| CN (1) | CN104245278B (ja) |
| TW (1) | TWI577718B (ja) |
| WO (1) | WO2014030474A1 (ja) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016084568A1 (ja) * | 2014-11-28 | 2016-06-02 | 東レ株式会社 | ポリエステルフィルム |
| WO2018047776A1 (ja) * | 2016-09-06 | 2018-03-15 | 倉敷紡績株式会社 | 保護テープおよびその製造方法 |
| JPWO2019082834A1 (ja) * | 2017-10-24 | 2020-09-17 | 東洋紡株式会社 | フレキシブルディスプレイの表面保護フィルム用ポリエステルフィルム |
| JP2020183527A (ja) * | 2019-05-08 | 2020-11-12 | エスケイシー・カンパニー・リミテッドSkc Co., Ltd. | ポリエステルフィルムおよびこれを含むフレキシブルディスプレイ装置 |
| JP2021055077A (ja) * | 2019-09-30 | 2021-04-08 | 東レ株式会社 | 二軸配向ポリエステルフィルム |
| WO2023022086A1 (ja) * | 2021-08-18 | 2023-02-23 | 大日本印刷株式会社 | 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103249540B (zh) * | 2011-02-21 | 2016-08-31 | 东丽株式会社 | 双轴取向聚对苯二甲酸乙二醇酯膜 |
| FR3017072B1 (fr) * | 2014-01-31 | 2016-02-19 | Toray Films Europ | Film de polyester transparent multicouche, son procede de fabrication et son utilisation notamment dans les faces arrieres de panneaux photovoltaiques |
| CN108137910B (zh) * | 2015-10-29 | 2020-09-01 | 东丽株式会社 | 聚对苯二甲酸乙二醇酯树脂组合物和由其形成的膜 |
| CN116080233A (zh) * | 2015-12-28 | 2023-05-09 | 东洋纺株式会社 | 层叠聚酯膜 |
| EP3398768B1 (en) * | 2015-12-28 | 2022-01-26 | Toyobo Co., Ltd. | Layered polyester film |
| TWI717477B (zh) | 2016-03-30 | 2021-02-01 | 日商東洋紡股份有限公司 | 聚酯膜、聚酯膜捲筒以及聚酯膜的製造方法 |
| CN107791606B (zh) * | 2016-08-29 | 2021-07-23 | 东丽先端材料研究开发(中国)有限公司 | 有机el用途薄膜、以及有机el显示和有机el照明 |
| CN106585024A (zh) * | 2016-12-28 | 2017-04-26 | 江苏东材新材料有限责任公司 | 一种高温低析出光学聚酯基膜及其制备方法 |
| CN110382602B (zh) | 2017-03-01 | 2022-05-27 | 东洋纺株式会社 | 具有呋喃二甲酸单元的聚酯膜的制造方法 |
| WO2018159649A1 (ja) * | 2017-03-01 | 2018-09-07 | 東洋紡株式会社 | フランジカルボン酸ユニットを有するポリエステルフィルムとヒートシール性樹脂層とを備える積層体および包装袋 |
| US20210206529A1 (en) * | 2018-05-31 | 2021-07-08 | Toyo Seikan Co., Ltd. | Resin-coated steel can and method for producing the same |
| KR102305248B1 (ko) * | 2020-02-12 | 2021-09-24 | 도레이첨단소재 주식회사 | 가스 배리어 알루미늄 증착필름 및 그의 제조방법 |
| JP7708091B2 (ja) | 2020-03-09 | 2025-07-15 | 東洋紡株式会社 | ポリエステルフィルムとその用途 |
| US12466926B2 (en) | 2020-04-22 | 2025-11-11 | Toyobo Co., Ltd. | Polyester film and use thereof |
| WO2022075425A1 (ja) | 2020-10-08 | 2022-04-14 | 凸版印刷株式会社 | 積層フィルム |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323394A (ja) * | 1996-04-04 | 1997-12-16 | Toray Ind Inc | 二軸配向ポリエステルフィルム |
| JPH10138333A (ja) * | 1996-11-11 | 1998-05-26 | Toray Ind Inc | 二軸延伸ポリエステルフィルムおよびその製造方法 |
| JP2000309052A (ja) * | 1999-04-27 | 2000-11-07 | Toray Ind Inc | 二軸配向ポリエステルフィルムおよびその製造方法 |
| JP2008030475A (ja) * | 2006-06-30 | 2008-02-14 | Toyobo Co Ltd | 成型用積層ポリエステルフィルムおよびその製造方法 |
| JP2010270237A (ja) * | 2009-05-22 | 2010-12-02 | Toyobo Co Ltd | メンブレンスイッチ成型用ポリエステルフィルム |
| JP2011178866A (ja) * | 2010-02-26 | 2011-09-15 | Fujifilm Corp | ポリエステルフィルム及びその製造方法、並びに太陽電池裏面封止用ポリエステルフィルム、太陽電池裏面保護膜及び太陽電池モジュール |
| JP2012136016A (ja) * | 2010-12-08 | 2012-07-19 | Fujifilm Corp | ポリエステルフィルム及びその製造方法、太陽電池用バックシート、及び太陽電池モジュール |
| WO2012114988A1 (ja) * | 2011-02-21 | 2012-08-30 | 東レ株式会社 | 二軸配向ポリエチレンテレフタレートフィルム |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3306088B2 (ja) * | 1992-04-02 | 2002-07-24 | 帝人株式会社 | 高密度磁気記録媒体 |
| JP2003101166A (ja) | 2001-09-27 | 2003-04-04 | Toray Ind Inc | 補強用ポリエステルフィルム |
| JP2004035720A (ja) | 2002-07-03 | 2004-02-05 | Toray Ind Inc | 二軸配向ポリエステルフィルム |
| JP5651960B2 (ja) * | 2010-01-22 | 2015-01-14 | 東洋紡株式会社 | 偏光板離型用二軸延伸ポリエチレンテレフタレートフィルム |
| JP5617668B2 (ja) * | 2010-02-18 | 2014-11-05 | 東レ株式会社 | ポリエステルフィルムおよびそれを用いた太陽電池バックシート、太陽電池 |
| JP2011184617A (ja) | 2010-03-10 | 2011-09-22 | Toray Ind Inc | 二軸配向ポリエステルフィルム |
| JP2012015411A (ja) | 2010-07-02 | 2012-01-19 | Tokyo Electron Ltd | 半導体装置の製造方法及び半導体装置 |
| JP5832733B2 (ja) * | 2010-09-17 | 2015-12-16 | 富士フイルム株式会社 | ポリエステルフィルムの製造方法 |
-
2013
- 2013-07-19 CN CN201380021037.6A patent/CN104245278B/zh active Active
- 2013-07-19 JP JP2013533803A patent/JP6011539B2/ja active Active
- 2013-07-19 US US14/396,295 patent/US9212268B2/en not_active Expired - Fee Related
- 2013-07-19 WO PCT/JP2013/069620 patent/WO2014030474A1/ja not_active Ceased
- 2013-07-19 KR KR1020147024955A patent/KR102022274B1/ko active Active
- 2013-07-23 TW TW102126194A patent/TWI577718B/zh active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323394A (ja) * | 1996-04-04 | 1997-12-16 | Toray Ind Inc | 二軸配向ポリエステルフィルム |
| JPH10138333A (ja) * | 1996-11-11 | 1998-05-26 | Toray Ind Inc | 二軸延伸ポリエステルフィルムおよびその製造方法 |
| JP2000309052A (ja) * | 1999-04-27 | 2000-11-07 | Toray Ind Inc | 二軸配向ポリエステルフィルムおよびその製造方法 |
| JP2008030475A (ja) * | 2006-06-30 | 2008-02-14 | Toyobo Co Ltd | 成型用積層ポリエステルフィルムおよびその製造方法 |
| JP2010270237A (ja) * | 2009-05-22 | 2010-12-02 | Toyobo Co Ltd | メンブレンスイッチ成型用ポリエステルフィルム |
| JP2011178866A (ja) * | 2010-02-26 | 2011-09-15 | Fujifilm Corp | ポリエステルフィルム及びその製造方法、並びに太陽電池裏面封止用ポリエステルフィルム、太陽電池裏面保護膜及び太陽電池モジュール |
| JP2012136016A (ja) * | 2010-12-08 | 2012-07-19 | Fujifilm Corp | ポリエステルフィルム及びその製造方法、太陽電池用バックシート、及び太陽電池モジュール |
| WO2012114988A1 (ja) * | 2011-02-21 | 2012-08-30 | 東レ株式会社 | 二軸配向ポリエチレンテレフタレートフィルム |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102402833B1 (ko) * | 2014-11-28 | 2022-05-27 | 도레이 카부시키가이샤 | 폴리에스테르 필름 |
| CN107001666A (zh) * | 2014-11-28 | 2017-08-01 | 东丽株式会社 | 聚酯膜 |
| KR20170090410A (ko) * | 2014-11-28 | 2017-08-07 | 도레이 카부시키가이샤 | 폴리에스테르 필름 |
| JPWO2016084568A1 (ja) * | 2014-11-28 | 2017-09-07 | 東レ株式会社 | ポリエステルフィルム |
| CN107001666B (zh) * | 2014-11-28 | 2020-09-01 | 东丽株式会社 | 聚酯膜 |
| WO2016084568A1 (ja) * | 2014-11-28 | 2016-06-02 | 東レ株式会社 | ポリエステルフィルム |
| WO2018047776A1 (ja) * | 2016-09-06 | 2018-03-15 | 倉敷紡績株式会社 | 保護テープおよびその製造方法 |
| JPWO2019082834A1 (ja) * | 2017-10-24 | 2020-09-17 | 東洋紡株式会社 | フレキシブルディスプレイの表面保護フィルム用ポリエステルフィルム |
| JP7334837B2 (ja) | 2017-10-24 | 2023-08-29 | 東洋紡株式会社 | フレキシブルディスプレイの表面保護フィルム用ポリエステルフィルム |
| JP7144744B2 (ja) | 2017-10-24 | 2022-09-30 | 東洋紡株式会社 | フレキシブルディスプレイの表面保護フィルム用ポリエステルフィルム |
| JP2022173210A (ja) * | 2017-10-24 | 2022-11-18 | 東洋紡株式会社 | フレキシブルディスプレイの表面保護フィルム用ポリエステルフィルム |
| JP2020183527A (ja) * | 2019-05-08 | 2020-11-12 | エスケイシー・カンパニー・リミテッドSkc Co., Ltd. | ポリエステルフィルムおよびこれを含むフレキシブルディスプレイ装置 |
| JP7341944B2 (ja) | 2019-05-08 | 2023-09-11 | エスケーマイクロワークス 株式会社 | ポリエステルフィルムおよびこれを含むフレキシブルディスプレイ装置 |
| JP2021055077A (ja) * | 2019-09-30 | 2021-04-08 | 東レ株式会社 | 二軸配向ポリエステルフィルム |
| JP7581733B2 (ja) | 2019-09-30 | 2024-11-13 | 東レ株式会社 | 二軸配向ポリエステルフィルム |
| WO2023022086A1 (ja) * | 2021-08-18 | 2023-02-23 | 大日本印刷株式会社 | 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104245278B (zh) | 2017-04-26 |
| US9212268B2 (en) | 2015-12-15 |
| TWI577718B (zh) | 2017-04-11 |
| US20150119548A1 (en) | 2015-04-30 |
| KR20150045921A (ko) | 2015-04-29 |
| KR102022274B1 (ko) | 2019-09-18 |
| TW201412838A (zh) | 2014-04-01 |
| JPWO2014030474A1 (ja) | 2016-07-28 |
| CN104245278A (zh) | 2014-12-24 |
| JP6011539B2 (ja) | 2016-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6011539B2 (ja) | 二軸配向ポリエチレンテレフタレートフィルムおよびその製造方法 | |
| JP5962648B2 (ja) | ポリエステルフィルムおよびその製造方法 | |
| JP5962506B2 (ja) | 二軸配向ポリエチレンテレフタレートフィルム | |
| JP7644602B2 (ja) | 二軸延伸ポリエステルフィルム | |
| CN105683286B (zh) | 阻燃性双轴取向聚酯膜、由其形成的阻燃性聚酯膜层合体和柔性电路基板 | |
| KR20110076873A (ko) | 폴리에스테르 필름 | |
| JP5847522B2 (ja) | プラスチックフィルムおよびその製造方法 | |
| JP5346517B2 (ja) | 難燃性共重合ポリエステルおよびそれからなる二軸配向フィルム | |
| JP2012171329A (ja) | 二軸配向ポリエステルフィルムロールおよびその製造方法 | |
| JP5379033B2 (ja) | 配向ポリエステルフィルムおよびその製造方法 | |
| JP2010031139A (ja) | 共重合ポリエステル樹脂組成物およびその製造方法ならびにそれからなる二軸配向フィルム | |
| JP2004107471A (ja) | 二軸配向ポリエステルフィルム | |
| JP2692269B2 (ja) | 低収縮ポリエステルフィルム | |
| KR20240123929A (ko) | 폴리에스테르 필름 및 이를 포함하는 면상 발열체 | |
| JPH0324936A (ja) | 二軸配向ポリエステルフィルム | |
| JP2008019387A (ja) | ポリエステル組成物およびポリエステルフィルム | |
| JP2014237273A (ja) | 二軸配向ポリエステルフィルム | |
| WO2014162606A1 (ja) | プラスチックフィルムおよびその製造方法 | |
| JPH02235937A (ja) | ポリエステルフィルム | |
| JP2010031173A (ja) | 二軸配向ポリエステルフィルム | |
| JP2014237274A (ja) | 二軸配向黒色ポリエステルフィルム |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENP | Entry into the national phase |
Ref document number: 2013533803 Country of ref document: JP Kind code of ref document: A |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13831241 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 20147024955 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 14396295 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 13831241 Country of ref document: EP Kind code of ref document: A1 |