KR960021475A - Manufacturing method of biaxially oriented polyester film - Google Patents
Manufacturing method of biaxially oriented polyester film Download PDFInfo
- Publication number
- KR960021475A KR960021475A KR1019940034944A KR19940034944A KR960021475A KR 960021475 A KR960021475 A KR 960021475A KR 1019940034944 A KR1019940034944 A KR 1019940034944A KR 19940034944 A KR19940034944 A KR 19940034944A KR 960021475 A KR960021475 A KR 960021475A
- Authority
- KR
- South Korea
- Prior art keywords
- stretching
- longitudinal
- oriented polyester
- polyester film
- biaxially oriented
- Prior art date
Links
- 229920006267 polyester film Polymers 0.000 title claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 title claims abstract 6
- 238000002425 crystallisation Methods 0.000 claims abstract 2
- 230000008025 crystallization Effects 0.000 claims abstract 2
- 229920001225 polyester resin Polymers 0.000 claims abstract 2
- 239000004645 polyester resin Substances 0.000 claims abstract 2
- 230000005484 gravity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract 1
- 229920000728 polyester Polymers 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
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
- 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
- B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (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)
Abstract
본 발명은 두께 균일성이 우수한 이축 배향 폴리에스테르 필름을 제조하는 방법에 관한 것으로서, 구체적으로 폴리에스테르 수지를 용융 압출하고 미연신 쉬트를 종방향 및 횡방향으로 연신하는 단계를 포함하는 이축 배향 폴리에스테르 필름의 제조방법에 있어서, 상기 연신 단계가 총 종연신비 3.5배 이상의 종연신을 행하되 종연신 쉬트의 결정화에너지가 10J/g 이상이 되도록 3단 이상의 다단 종연신을 행한 후, 연신비 3.5 내지 4.5배로 횡연신하는 것을 특징으로 하는 방법에 관한 것이다.The present invention relates to a method for producing a biaxially oriented polyester film having excellent thickness uniformity, specifically, a biaxially oriented polyester comprising melt extruding a polyester resin and stretching the unstretched sheet in the longitudinal and transverse directions. In the method for producing a film, the stretching step is a longitudinal stretching of at least 3.5 times the total longitudinal stretching ratio, but after performing three or more stages of multi-stage longitudinal stretching so that the crystallization energy of the longitudinal stretching sheet is 10 J / g or more, the transverse ratio is 3.5 to 4.5 times It relates to a method characterized by stretching.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도 및 제2도는 각각 본 발명의 한 태양에 따르는 폴리에스테르 필름의 3단 종연신 장치의 개략도이다.1 and 2 are schematic diagrams of a three-stage longitudinal drawing apparatus of a polyester film, respectively, according to one aspect of the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940034944A KR0140310B1 (en) | 1994-12-19 | 1994-12-19 | Process for preparing biaxially oriented polyester film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940034944A KR0140310B1 (en) | 1994-12-19 | 1994-12-19 | Process for preparing biaxially oriented polyester film |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960021475A true KR960021475A (en) | 1996-07-18 |
KR0140310B1 KR0140310B1 (en) | 1998-07-01 |
Family
ID=19402092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940034944A KR0140310B1 (en) | 1994-12-19 | 1994-12-19 | Process for preparing biaxially oriented polyester film |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0140310B1 (en) |
-
1994
- 1994-12-19 KR KR1019940034944A patent/KR0140310B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR0140310B1 (en) | 1998-07-01 |
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A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
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FPAY | Annual fee payment |
Payment date: 20001212 Year of fee payment: 4 |
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LAPS | Lapse due to unpaid annual fee |