KR19990065002A - Highly transparent biaxially oriented polyester film - Google Patents
Highly transparent biaxially oriented polyester film Download PDFInfo
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- KR19990065002A KR19990065002A KR1019980000010A KR19980000010A KR19990065002A KR 19990065002 A KR19990065002 A KR 19990065002A KR 1019980000010 A KR1019980000010 A KR 1019980000010A KR 19980000010 A KR19980000010 A KR 19980000010A KR 19990065002 A KR19990065002 A KR 19990065002A
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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Abstract
본 발명은 기계적 강도, 열적특성, 전기적 성질, 내약품성,투명성 등의 물성이 우The present invention is based on the finding that the physical properties such as mechanical strength, thermal properties, electrical properties, chemical resistance,
수하여 포장용, 라미네이션 용, 윈도우용등 산업용으로 널리 사용되는 폴리에스테Polyester which is widely used for industrial purposes such as packaging, lamination, window, etc.
르 필름에 대한 것으로서, 기존의 제품에 비해 투명성이 매우 우수하고, 권취성이 매우 양호한 특징을 가진다.The film is excellent in transparency as compared with conventional products, and has a very good winding property.
본 발명은 상기와 같은 목적을 달성하기 위하여 1종 이상의 카르복실산 및 1종 이상의 글리콜 성분을 에스테르 반응시키고 평균입경이 0.01∼1.6㎛로 조절된 1차 입In order to achieve the above object, the present invention provides a process for esterifying at least one carboxylic acid and at least one glycol component,
경10∼40nm인 침강실리카(Precipitated Silica) 입자를 0.005∼0.1중량%, 보조입자0.005 to 0.1 wt% of precipitated silica particles having a diameter of 10 to 40 nm,
로 입도분포의 범위가 좁은 큐빅 형태의 합성 탄산칼슘을 0.001∼0.01중량% 첨가하여 중축합 시킨 폴리에스테르를 혼합, 건조, 용융, 압출, 연신하여 제조된 투명성By adding 0.001 to 0.01 wt% of cubic-shaped synthetic calcium carbonate having a narrow particle size distribution range, mixing the resulting polyester with a polycondensate, drying, melting, extruding,
과 권취성이 우수한 이축연신 폴리에스테르 필름에 관한 것이다.And a biaxially stretched polyester film excellent in windability.
Description
본 발명은 투명성과 권취 특성이 우수하여 라미네이트용, 포장용, 윈도우용, 금은INDUSTRIAL APPLICABILITY The present invention is excellent in transparency and winding property and can be used for laminate, packaging, window,
사 제조용에 적합한 이축배향 폴리에스테르 필름에 괸한 것으로, 보다 상세하게는, 폴리에스테르 필름 표면에 투명성이 우수한 입자로 작은 돌기를 형성하고 입도분포의 범위가 좁은 큰 입자를 소량 사용하여 필름 표면에 큰 돌기를 형성함으로서 투The present invention relates to a biaxially oriented polyester film suitable for use in the manufacture of a polyester film, and more particularly to a biaxially oriented polyester film suitable for use in the manufacture of a polyester film, which comprises a polyester film having small projections formed of particles having excellent transparency, By forming
명성과 권취성이 우수한 이축 배향 폴리에스테르 필름에 관한 것이다.And a biaxially oriented polyester film excellent in fame and spinnability.
폴리에스테르 필름은 물리적,화학적 특성이 우수하여 산업상 널리 이용되고 있으며The polyester film has excellent physical and chemical properties and is widely used in industry
특히 기계적 강도, 열적 특성, 전기적 성질, 내약품성, 내습성, 내수성등이 우수하In particular, it has excellent mechanical strength, thermal properties, electrical properties, chemical resistance, moisture resistance and water resistance
여 포장용, 산업용, 자기용등에 널리 이용되고 있다. 특히 필름의 투명성을 개선하It is widely used in packaging, industrial, and magnetic applications. In particular, to improve the transparency of the film
기 위하여 폴리 에스테르 제조시에 첨가하는 무기 불활성 입자는 사용량을 최소화In order to minimize the amount of inorganic inert particles added during polyester production
하여 일정 수준의 투명성을 확보할수 있으나 사용량을 적게 하므로 인해 공정통과However, since transparency can be secured to a certain level,
성이 악화되고 권취상태가 나빠져 생산 수율을 저하시키게 되었다.Resulting in a deterioration of the wound state and deterioration of the yield of production.
위와 같은 문제를 해결하기 위해 일본 공개특허소53-45396 에서는 건식법으로 실In order to solve the above problem, Japanese Patent Application Laid-Open No. 53-45396
리카를 사용하는 방법, 일본 공개특허 소59-206456에는 다양한 입자와 고급 지방산 아미드 화합물을 사용하는 방법이 개시되고 있으나, 전자의 경우, 사용입자 자체가JP-A-59-206456 discloses a method of using a variety of particles and a higher fatty acid amide compound, but in the case of the former,
미세하기 때문에 권취성을 확보하기 위해서는 다량의 입자를 사용하여야 하고, 후It is necessary to use a large amount of particles in order to secure the winding-up property,
자의 경우는 입자 자체가 폴리에스테르 필름의 투명성을 저하시키고 고급지방산 아In the case of the polyester film itself, the transparency of the polyester film is deteriorated,
마이드화합물을 사용시 폴리머 자체의 내열성을 악화시키는 문제가 있다.There is a problem that the heat resistance of the polymer itself is deteriorated when using the imide compound.
본 발명은 상기와 같은 문제를 해결하기 위하여, 이축배향 폴리에스테르 필름내에In order to solve the above problems, the present invention provides a biaxially oriented polyester film
서 투명성이 매우 우수한 입자를 선정하고 이 입자의 크기를 일정 크기로 조절하며We select particles with excellent transparency and adjust the size of these particles to a certain size
입도 분포의 범위가 좁은 입자를 첨가함에 의해 투명성 및 권취 특성이 우수한 이축 배향 폴리에스테르 필름을 얻게 된다.By adding particles having a narrow particle size distribution range, a biaxially oriented polyester film excellent in transparency and winding property can be obtained.
본 발명은 상기와 같은 목적을 달성하기 위하여 1종 이상의 카르복실산 및 1종 이상의 글리콜 성분을 에스테르 반응시키고 평균입경이 0.01∼1.6㎛로 조절된 1차 입경10∼40nm인 침강실리카(Precipitated Silica) 입자 및 입도분포의 범위가 좁은In order to accomplish the above object, the present invention provides a method for producing a polyester resin by reacting one or more kinds of carboxylic acid and at least one glycol component with an ester and reacting with a preliminarily mixed silica having a primary particle diameter of 10 to 40 nm, Particles and narrow particle size distribution
합성탄산칼슘을 첨가한 후 축중합 시켜서 얻어지는 폴리에스테르를 건조 용융, 압After the addition of synthetic calcium carbonate, the polyester obtained by condensation polymerization is dried, melted and pressed
출, 연신하여 제조하는 것을 특징으로 하는 투명성 폴리에스테르에 관한 것이다. 이하에서 구체적으로 설명한다.Followed by stretching, drawing and stretching. This will be described in detail below.
본 발명에서 폴리에스테르는 테레프탈산, 2,6-나프탈렌산 디카르복실산 등과 같은 방향족 디카르복실산 또는 이의 에스테르화합물과 에틸렌글리콜를 출발원료로 하여In the present invention, polyester is obtained by using an aromatic dicarboxylic acid such as terephthalic acid, 2,6-naphthalic acid dicarboxylic acid or the like or an ester compound thereof and ethylene glycol as starting materials
만들어지지만,또 다른 제3성분이 사용되어질 수 있다. 이때 본 발명의 출발 원료But another third component can be used. At this time, the starting material
인 디카르복실산 성분으로, 예를 들면, 테레프탈산, 2,6-나프탈렌디카르복실산, 프As the dicarboxylic acid component, for example, terephthalic acid, 2,6-naphthalenedicarboxylic acid,
탈산, 이소프탈산, 아디프산, 세바틱산등의 산성분과 에스테르를 1종 또는 2종 이One or two kinds of acidic components such as deacidification, isophthalic acid, adipic acid and sebatic acid,
상 사용할수 있고,글리콜성분으로서는 에틸렌글리콜, 프로필렌글리콜, 부탄디올,And examples of the glycol component include ethylene glycol, propylene glycol, butanediol,
1,4-사이클로헥산디메탄올, 네오펜틸글리콜 등을 1종 또는 2종이상 사용할수 있다. 그러나 본 발명에서는 반복되는 구조단위의 80% 또는 그 이상이 에틸렌테레프탈레이트 또는 에틸렌 2,6-나프탈레이트 구조로 구성된 폴리에스테르를 사용하는 것이1,4-cyclohexane dimethanol, neopentyl glycol, and the like. However, in the present invention, it is preferable to use a polyester in which 80% or more of repeating structural units are composed of ethylene terephthalate or ethylene 2,6-naphthalate structure
보다 우수한 특성을 보여준다.And shows superior characteristics.
본 발명에 의해 제조되는 폴리에스테르는 열안정제, 브로킹방지제, 산화 방지제,The polyester produced by the present invention may contain heat stabilizers, anti-blocking agents, antioxidants,
대전 방지제, 자외선 흡수제등과 같은 첨가제를 함유할 수 있다.An antistatic agent, an ultraviolet absorber, and the like.
또한, 본 발명에서의 폴리에스테르 필름은 폴리에스테르를 출발원료로 하여 이축배향되는 폴리에스테르 필름을 말하지만, 그 제조 방법은 공지된 방법을 이용할수 있다.The polyester film in the present invention refers to a polyester film which is biaxially oriented with polyester as a starting material, and a known method can be used for the production of the polyester film.
예를 들면 270∼300℃로 용융 압출하여 40∼70℃로 냉각 고화시켜 비결정성의 미연신 필름을 얻고, 이를 90∼120℃에서 3.0∼4.0배의 종방향 연신을 하고, 180∼220℃에서 3.0∼5.0배의 횡방향 연신을한후 200∼240℃에서 열처리를 실시하여 폴리에스테르 필름을 얻는다.For example, at 270 to 300 캜, and then cooled and solidified at 40 to 70 캜 to obtain an amorphous unstretched film, which is subjected to longitudinal stretching at a temperature of 90 to 120 캜 at 3.0 to 4.0 times, After lateral stretching at 3.0 to 5.0 times, heat treatment is performed at 200 to 240 캜 to obtain a polyester film.
본 발명의 가장 큰 특징은 폴리에스테르 수지내에 쇼듐실리케이트(SodiumThe most remarkable feature of the present invention is that a sodium silicate
Silicate:Na2O·nSIO2) 수용액을 황산으로 처리하여 생성된 1차 입경(primarySilicate: Na2O · nSIO2) was treated with sulfuric acid to produce primary particles
particle size)이 10∼40nm, 평균 입경이 2.0∼10㎛인 침강실리카 입자를 평균입경particle size) of 10 to 40 nm and an average particle diameter of 2.0 to 10 [micro]
0.01∼1.6㎛으로 조절하여 사용함으로서 투명성이 매우 우수한 폴리에스테르 필름The polyester film having excellent transparency can be obtained by adjusting the thickness to 0.01 to 1.6 탆
을 얻을 수 있다. 실리카는 일반적으로 건식법(Fumed Process), 습식법인 겔법Can be obtained. The silica is generally produced by a method such as a fumed process,
(Geled Process), 침강법(Precipitated Process)등으로 제조할 수 있으나 그중에서(Geled Process), Precipitated Process (Precipitated Process)
침강법으로 제조한 실리카가 가장 투명성이 좋다. 침강법으로 제조한 실리카는Silica prepared by sedimentation method is most transparent. The silica prepared by the sedimentation method
0.05∼3.5중량부의 Na2S04를 함유하며 Na2S0₄의 함량을 0.05중량부 이하로 하기 위Containing 0.05 to 3.5 parts by weight of Na 2 S0 4 and above to the content of Na 2 S0₄ less than 0.05 parts by weight
해서는 경제성 면에서 불리하고 3.5중량부 이상인 경우 금속염에 의해서 폴리에스It is disadvantageous from the viewpoint of economical efficiency. When the amount is 3.5 parts by weight or more,
테르의 내구성을 해치게 된다.The durability of the ter is deteriorated.
폴리에스테르필름 내의 침강실리카 입자 함량은 0.005∼0.1중량% 정도가 좋다. 입The content of precipitated silica particles in the polyester film is preferably about 0.005 to 0.1% by weight. mouth
자의 함량이 0.1 중량% 보다 많을 경우는 원하는 투명성을 얻을수가 없고, 0.005중When the content of the inorganic fine particles is more than 0.1% by weight, the desired transparency can not be obtained,
량% 보다 소량 사용시에는 권취 특성이 나빠져 필름 롤상의 돌기(Pimple)가 발생하여 좋치 않다. 입경을 위 범위내에서 조절하지 않으면, 예를 들면 평균입경이 1.6%, The winding property is deteriorated and a projection on the film roll is generated, which is not preferable. If the particle diameter is not adjusted within the above range, for example, if the average particle diameter is 1.6
㎛이상이면 거대 입자가 존재하게 되고 필름 표면에 큰 결점을 형성시켜 좋치 않If it is more than 탆, macromolecular particles are present and large defects are formed on the surface of the film.
다.All.
입도 조절방법으로는 예를 들면 비드(BEAD)충진식, 디노-밀(DYNO-MILL)방법, 압력Examples of the particle size regulating method include a BEAD filling method, a Dyno-Mill method,
식등 습식 방법을 이용하는 것이 유리하다. 또한 제2입자 성분으로서 평균입경이It is advantageous to use the formula-wet method. Further, as the second particle component,
1.7∼3.0㎛이고, 작은 입자 크기로 부터 누적한 체적 D90/D10비율이 2.3 이하인 큐1.7 to 3.0 占 퐉, and a cumulative volume D 90 / D 10 ratio from a small particle size of 2.3
빅(Cubic) 형태의 탄산 칼슘 입자를 0.001∼0.01 중량% 첨가함을 특징으로 한다. 이때 사용 되는 탄산칼슘 입자는 가성소다(Na2CO3)와 염화칼슘(CaCl2)와의 반응으로 얻어진다.And 0.001 to 0.01 wt% of a cubic calcium carbonate particle. The calcium carbonate particles used here are obtained by the reaction between caustic soda (Na 2 CO 3 ) and calcium chloride (CaCl 2 ).
D90/D10비율이 2.3 보다 크면 매우 큰 입자가 존재하게 되고 필름표면에 결점을 형If the D 90 / D 10 ratio is larger than 2.3, very large particles will be present and defects on the film surface
성하게 되어 좋치 않게 된다.It becomes bad and becomes bad.
탄산 칼슘의 표면처리제로서는 아크릴계 및 메타크릴과의 공중합체의 엑시드 형태 혹은 금속염 혹은 암모니움염 형태를 사용한다.As the surface treatment agent of calcium carbonate, an acid form or a metal salt or ammonium salt form of a copolymer of acrylic and methacrylic is used.
본 발명은 이상에서와 같이 적정한 입경으로 조절된 침강 실리카 입자와 입도분포The present invention relates to precipitated silica particles having an appropriate particle size and a particle size distribution
의 범위가 좁은 힙성 탄산칼슘을 첨가한 후 중축합시켜 얻은 폴리에스테르를 공지And the polyester obtained by polycondensation after addition of heptious calcium carbonate having a narrow range of
의 방법으로 건조, 용융, 압출, 연신하여 투명성과 권취특성이 우수한 이축연신 필Extruded and stretched by the method of < RTI ID = 0.0 >
름을 얻게 된다..
다음은 발명의 효과를 알아보기 위한 측정 방법이다.The following is a method for measuring the effect of the invention.
(1) 입자의 평균입경(1) average particle diameter of particles
입자슬러리를 레이저 회절 방식의 입도 분포 측정기(Granulometer HR-850)을 이용하여 측정하고, 이때 입자를 구형으로 환산하여 작은 입자크기로 부터 누적한 체적이 50%가 되는 입경을 입자의 평균입경으로 하였다. 작은 입자크기로 부터 누적한 체적이 10%, 90%가 되는 입경을 각각 D10, D90으로 정의한다.The particle slurry was measured using a particle size distribution analyzer (Granulometer HR-850) of a laser diffraction method, and the particle size of 50% of the accumulated volume from the small particle size was calculated as spherical shape . The particle diameters at which the cumulative volume from small particle size is 10% and 90% are defined as D 10 and D 90 , respectively.
(2) 탁도(haze)(2) turbidity (haze)
투명성을 측정하기 위해 폴리에스테르 필름을 3.5인치×3.5인치 크기로 절단하여 헤이즈 측정기(Automatic Digital Hazemeter, 일본 덴쇼쿠사 제)에 1매를 수직으로In order to measure the transparency, the polyester film was cut into a size of 3.5 inch × 3.5 inch, and one piece was placed vertically on a haze meter (Automatic Digital Hazemeter, manufactured by Nippon Denshoku)
놓고, 시료의 수직 방향에 대하여 589nm의 파장의 빛을 투과시킨다. 이때 탁도값은And a light having a wavelength of 589 nm is transmitted through the sample in the vertical direction. The turbidity value
아래의 식으로 계산한다. 측정방법은 JIS-Z8722을 기준으로 하였다.Calculate using the following formula. The measurement method was based on JIS-Z8722.
탁도(%)=(전체산란광/전체투과광)×100Turbidity (%) = (total scattered light / total transmitted light) × 100
(3) 필름의 권취성(3) Wettability of the film
광폭의 폴리에스 필름롤을 1000㎜ 폭의 소폭의 롤로 절단-권취(SLITTING 공정)시Cutting a wide-width poly-film roll with a narrow roll of 1000 mm width - During the SLITTING process
소폭롤상에서 발생하는 돌기(Pimple)의 정도를 육안으로 판정한다.Determine the extent of the pimples on the small roll with the naked eye.
A:돌기(Pimple)의 발생에 의한 소폭롤 권취불량률 5% 미만A: Small roll roll failure rate due to occurrence of pimple Less than 5%
B:돌기(Pimple)의 발생에 의한 소폭롤 권취불량률 5∼20%이내B: Small roll roll defective rate due to occurrence of pimple Within 5 ~ 20%
C:돌기(Pimple)의 발생에 의한 소폭롤 권취불량률 20-40%이내C: Defect ratio of small roll roll caused by occurrence of pimple Within 20-40%
D:돌기(Pimple)의 발생에 의한 소폭롤 권취불량률 40% 이상 발생D: A small roll roll failure rate of 40% or more due to the occurrence of pimples
다음의 실시예 및 비교 예는 본 발명을 더욱 상세히 설명하는 것이지만 본 발명을 한정하지는 않는다.The following examples and comparative examples illustrate the present invention in more detail, but do not limit the present invention.
실시예 1Example 1
100중량부의 디메틸테레프탈레이트, 70중량부의 에틸렌글리콜, 0.09중량부의 망간100 parts by weight of dimethyl terephthalate, 70 parts by weight of ethylene glycol, 0.09 parts by weight of manganese
아세테이트사수화물과 0.04중량부의 안티몬트리옥사이이드를 반응기에 넣어 메탄올Acetate tetrahydrate and 0.04 part by weight of antimony trioxide were placed in a reactor and methanol
를 유출시키면서 에스테르교환반응을 시키다. 에스테르교환 반응이 끝난후 이 생성And the ester exchange reaction is carried out. After the transesterification reaction is complete,
물에 0.06중량부의 트리메틸포스페이트와 펼균입경이 0.9㎛로 조절된 침강 실리카0.06 part by weight of trimethyl phosphate in water and 15 parts by weight of precipitated silica
입자를 1.0중량부를 에틸렌글리콜 슬러리 형태로 첨가하여 진공하에서 중축합반응1.0 part by weight of the particles were added in the form of an ethylene glycol slurry and subjected to a polycondensation reaction
을 시켜 극한 점도가 0.62의 폴리에스테르(A)를 얻는다.To obtain a polyester (A) having an intrinsic viscosity of 0.62.
위와 같은 방법으로 입자를 첨가하지 않은 극한 점도가 0.62의 무입자 폴리에스In the same manner as above, a non-particle polyester having an intrinsic viscosity of 0.62
테르(C)를 얻는다.(C) is obtained.
위에서 합성한 폴리에스테르(A), (C)를 중량비 4:96으로 혼합한후 건조하여, 290℃The polyester (A) and the polyester (C) synthesized above were mixed at a weight ratio of 4:96 and then dried,
로 용융 압출하여 40∼70℃로 냉각 고화시켜 비결정성의 미연신 필름을 얻고, 이를And cooled and solidified at 40 to 70 DEG C to obtain an amorphous undrawn film,
120℃에서 4.0배의 종방향 연신을 하고, 180∼220℃에서 4.5배의 횡방향 연신을 한후 220℃에서 열처리를 실시하여 두께가 50㎛ 이축연신 폴리에스테르 필름을 제조Longitudinal stretching 4.0 times at 120 占 폚, transverse stretching 4.5 times at 180-220 占 폚, and heat treatment at 220 占 폚 to prepare a 50 占 퐉 biaxially stretched polyester film
하였다.Respectively.
실시예 2Example 2
폴리에스테르(A)와 같은 방법으로 반응을 실시하고 반응 혼합물에 침강 실리카The reaction is carried out in the same manner as the polyester (A), and the precipitated silica
입자 대신에 큐빅 모양의 D90/D10비율이 1.84, 평균 입경 2.4㎛ 합성 탄산 칼슘Instead of the particles, a cubic-shaped D 90 / D 10 ratio of 1.84, an average particle diameter of 2.4 μm, synthetic calcium carbonate
을 0.1중량부 첨가하고 중축합 반응을 실시하여 극한 점도가 0.62의 폴리에스테르And 0.1 part by weight of a polyol having an intrinsic viscosity of 0.62
(B)를 얻는다.(B).
이 입자 및 위 입자(A)를 사용한 이축연신 폴리에스테르 필름의 성질은 표 1에 잘The properties of the particles and the biaxially stretched polyester film using the stomach particles (A) are shown in Table 1
나타나 있다.Is shown.
실시예 3Example 3
펼균입경이 1.2㎛로 조절된 침강 실리카 입자를 사용한 것 이외에는 실시예 1과The procedure of Example 1 was repeated except that precipitated silica particles having a pullulan particle size of 1.2 탆 were used.
동일하게 폴리에스테르(A)를 제조하였다. 이 입자 및 입자(B)를 사용한 두께가 이The polyester (A) was similarly prepared. When the thickness of the particles and the particles (B)
축연신 폴리에스테르 필름의 성질은 표 1에 잘나타나 있다.Properties of the axially stretched polyester film are shown in Table 1.
비교예 1Comparative Example 1
평균입경이 1.8㎛인 겔(GEL)법에 의해 제조된 실리카 입자를 사용한 것 이외에는Except that silica particles produced by a gel (GEL) method having an average particle diameter of 1.8 占 퐉 were used
실시 예1과 동일하게 폴리에스테르(A)를 조제하였다. 이 입자를 사용한 이축연신A polyester (A) was prepared in the same manner as in Example 1. Biaxial stretching using these particles
폴리에스테르 필름의 특성은 표 1에 잘나타나 있다.The properties of the polyester film are shown in Table 1.
비교예2Comparative Example 2
평균입경이 0.4㎛로 조절된 건식 실리카 입자를 사용한 것 이외에는 실시예 1과The procedure of Example 1 was repeated except that dry silica particles whose average particle diameter was adjusted to 0.4 탆 were used.
동일하게 폴리에스테르(A)를 조제하였다.이 입자를 사용한 이축연신 폴리에스테르The polyester (A) was prepared in the same manner. The biaxially stretched polyester
필름의 특성은 표 1에 잘 나타나 있다.The properties of the film are shown in Table 1.
표 1Table 1
상기 실시예 및 비교예에서도 확인되듯이 본 발명의 이축 배향 폴리에스테르 필름As confirmed in the above Examples and Comparative Examples, the biaxially oriented polyester film
은 투명성 및 권취성이 우수하여 포장용, 라미네이션용, 윈도우용 또는 금은사 제Is superior in transparency and winding property and can be used for packaging, lamination, window or gold
조용에 적합한 특성을 나타내었다.And showed characteristics suitable for quietness.
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US4210571A (en) * | 1978-09-28 | 1980-07-01 | Nl Industries, Inc. | Surfactants and their use as coupling agents in thermosetting polymers |
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JPS63145328A (en) * | 1986-12-08 | 1988-06-17 | Toray Ind Inc | Production of modified polyester |
FR2678259B1 (en) * | 1991-06-26 | 1993-11-05 | Rhone Poulenc Chimie | NOVEL PRECIPITATED SILICA IN THE FORM OF GRANULES OR POWDERS, METHODS OF SYNTHESIS AND USE FOR REINFORCING ELASTOMERS. |
KR930012872A (en) * | 1991-12-18 | 1993-07-21 | 서주인 | Biaxially Oriented Polyester Film and Manufacturing Method Thereof |
KR940007093A (en) * | 1992-09-21 | 1994-04-26 | 하기주 | Roughening polyester film and its manufacturing method |
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