KR20170068443A - 폴리비닐 알코올계 필름 및 이의 제조방법, 및 편광 필름, 편광판 - Google Patents
폴리비닐 알코올계 필름 및 이의 제조방법, 및 편광 필름, 편광판 Download PDFInfo
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- KR20170068443A KR20170068443A KR1020177006882A KR20177006882A KR20170068443A KR 20170068443 A KR20170068443 A KR 20170068443A KR 1020177006882 A KR1020177006882 A KR 1020177006882A KR 20177006882 A KR20177006882 A KR 20177006882A KR 20170068443 A KR20170068443 A KR 20170068443A
- Authority
- KR
- South Korea
- Prior art keywords
- film
- polyvinyl alcohol
- stretching
- boric acid
- true stress
- 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.)
- Granted
Links
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Classifications
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- 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
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00634—Production of filters
- B29D11/00644—Production of filters polarizing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/003—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/28—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on an endless belt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
-
- 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
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
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- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F16/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F16/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an alcohol radical
- C08F16/04—Acyclic compounds
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- B29K2029/00—Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals or derivatives thereof as moulding material
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Abstract
5.0 ≤ Xc/Xa ≤ 9.0···(1)
Description
Claims (15)
- 폴리비닐 알코올계 수지 (A)를 함유하는 필름 형성 재료를 제막하여 이루어진 폴리비닐 알코올계 필름이며, 상기 폴리비닐 알코올계 필름을 5중량%의 붕산 수용액 중, 56℃에서 0.5분간 침지한 (초기 상태) 후, 붕산 수용액 중에서 연신 속도 70mm/sec로 초기 상태의 2.5배 연신했을 때의 진응력 (Xa)과, 이어서 연신을 계속하면서, 붕산 수용액 중에서 초기 상태의 4.3배 연신했을 때의 진응력 (Xc)에서, 하기 식 (1)을 만족하는 것을 특징으로 하는 폴리비닐 알코올계 필름.
5.0 ≤ Xc/Xa ≤ 9.0···(1) - 폴리비닐 알코올계 수지 (A)를 함유하는 필름 형성 재료를 제막하여 이루어진 폴리비닐 알코올계 필름이며, 상기 폴리비닐 알코올계 필름을 5중량%의 붕산 수용액 중, 56℃에서 0.5분간 침지한 (초기 상태) 후, 붕산 수용액 중에서 연신 속도 70mm/sec로 초기 상태의 2.5배 연신했을 때의 진응력 (Xa)과, 이어서 연신을 계속하면서, 붕산 수용액 중에서 초기 상태의 3.4배 연신했을 때의 진응력 (Xb)과, 다시 연신을 계속하면서, 붕산 수용액 중에서 초기 상태의 4.3배 연신했을 때의 진응력 (Xc)에서, 하기 식 (1) 및 (2)를 만족하는 것을 특징으로 하는 폴리비닐 알코올계 필름.
5.0 ≤ Xc/Xa ≤ 9.0···(1)
Xb/Xa ≤ Xc/Xa···(2) - 청구항 1 또는 2에 있어서,
진응력 (Xa)은 4.0∼7.0 MPa인 것을 특징으로 하는 폴리비닐 알코올계 필름. - 청구항 1 내지 3 중 어느 한 항에 있어서,
진응력 (Xc)은 35.0∼45.0MPa인 것을 특징으로 하는 폴리비닐 알코올계 필름. - 청구항 2 내지 4 중 어느 한 항에 있어서,
진응력 (Xb)은 11.0∼15.0MPa인 것을 특징으로 하는 폴리비닐 알코올계 필름. - 청구항 2 내지 5 중 어느 한 항에 있어서,
폴리비닐 알코올계 필름을 5중량%의 붕산 수용액 중, 56℃에서 0.5분간 침지한 (초기 상태) 후, 붕산 수용액 중에서 연신 속도 70mm/sec에서 초기 상태의 2.5배 연신했을 때의 진응력 (Xa)과, 이어서 연신을 계속하면서, 붕산 수용액 중에서 초기 상태의 3.4배 연신했을 때의 진응력 (Xb)에서, 하기 식 (3)을 만족하는 것을 특징으로 하는 폴리비닐 알코올계 필름.
1.9 ≤ Xb/Xa ≤ 3.0···(3) - 청구항 2 내지 6 중 어느 한 항에 있어서,
폴리비닐 알코올계 필름을 5중량%의 붕산 수용액 중, 56℃에서 0.5분간 침지한 (초기 상태) 후, 연신을 계속하면서, 붕산 수용액 중에서 초기 상태의 3.4배 연신했을 때의 진응력 (Xb)과, 다시 연신을 계속하면서, 붕산 수용액 중에서 초기 상태의 4.3배 연신했을 때의 진응력 (Xc)에서, 하기 식 (4)를 만족하는 것을 특징으로 하는 폴리비닐 알코올계 필름.
2.0 ≤ Xc/Xb ≤ 3.5···(4) - 청구항 1 내지 7 중 어느 한 항에 있어서,
두께가 5∼50㎛인 것을 특징으로 하는 폴리비닐 알코올계 필름. - 청구항 1 내지 8 중 어느 한 항에 있어서,
폴리비닐 알코올계 필름을 30℃의 물에 5분간 침지하여 팽윤시켰을 때의 면적 팽윤도 (Y)는 130∼170%인 것을 특징으로 하는 폴리비닐 알코올계 필름. - 청구항 1 내지 9 중 어느 한 항에 있어서,
30℃로의 중량 팽윤도 (W)는 190∼240%인 것을 특징으로 하는 폴리비닐 알코올계 필름. - 청구항 1 내지 10 중 어느 한 항에 있어서,
위상차 값은 10∼50 nm인 것을 특징으로 하는 폴리비닐 알코올계 필름. - 청구항 1 내지 11 중 어느 한 항에 있어서,
편광 필름의 원반필름으로서 사용되는 것을 특징으로 하는 폴리비닐 알코올계 필름. - 청구항 1 내지 12 중 어느 한 항에 기재된 폴리비닐 알코올계 필름을 제조하는 방법이며, 상기 폴리비닐 알코올계 수지 (A)를 함유하는 필름 형성 재료의 수용액을 제1 열롤에 유연하여 필름상에 제막하는 공정[I]과, 상기 제1 열롤로부터 필름을 박리하는 공정[II]과, 롤 표면 온도가 30∼95℃의 제2열롤군에, 필름의 표리를 교대로 통과시키는 공정[III]과, 상기 제2 열롤군을 통과시킨 필름을 60∼145℃의 분위기하에서 열처리를 실시하는 공정[IV]를 포함하는 것을 특징으로 하는 폴리비닐 알코올계 필름의 제조 방법.
- 청구항 1 내지 12 중 어느 한 항에 기재된 폴리비닐 알코올계 필름으로 이루어진 것을 특징으로 하는 편광 필름.
- 청구항 14에 기재된 편광 필름과, 상기 편광 필름의 적어도 한 면에 설치된 보호 필름을 구비하고 있는 것을 특징으로 하는 편광판.
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