Production method and production device of film having fine irregular pattern on surface
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B28B-011/08
B29C-031/08
B29C-031/00
B29C-043/34
B29C-059/02
B29C-043/02
B29K-105/00
B29C-043/36
출원번호
US-0922324
(2009-03-06)
등록번호
US-8911655
(2014-12-16)
우선권정보
JP-2008-066058 (2008-03-14)
국제출원번호
PCT/JP2009/054270
(2009-03-06)
§371/§102 date
20100913
(20100913)
국제공개번호
WO2009/113453
(2009-09-17)
발명자
/ 주소
Minoura, Kiyoshi
Hirai, Yuma
Nomura, Fumiyasu
출원인 / 주소
Toray Industries, Inc.
대리인 / 주소
RatnerPrestia
인용정보
피인용 횟수 :
0인용 특허 :
1
초록▼
A method for producing a film having a fine irregular pattern intermittently includes feeding a film to be processed intermittently from upstream side to the vicinity of the surface of a die having a fine irregular pattern, transferring the pattern to the surface of the film by pressing the film aga
A method for producing a film having a fine irregular pattern intermittently includes feeding a film to be processed intermittently from upstream side to the vicinity of the surface of a die having a fine irregular pattern, transferring the pattern to the surface of the film by pressing the film against the surface of a die, stripping the processed film on which a pattern is formed from the surface of a die, and then feeding a new film to be processed to the die, wherein the processed film is stripped from the surface of a die by gripping and moving the processed film to the upstream side, and then the processed film is fed by a length of intermittent feed to the surface of a die while preventing the processed film from creasing.
대표청구항▼
1. A production method for a film having a fine asperity pattern on a surface thereof, comprising: (1-a) supplying a processing film composed of a thermoplastic resin as a main component in a film supply step in which said processing film taken out from a long film strip supply source provided on an
1. A production method for a film having a fine asperity pattern on a surface thereof, comprising: (1-a) supplying a processing film composed of a thermoplastic resin as a main component in a film supply step in which said processing film taken out from a long film strip supply source provided on an upstream side is supplied intermittently in the lengthwise direction of the film with a predetermined length onto a mold surface having a fine asperity pattern having a roughness height in the range of 10 nm to 1 mm,(1-b) forming a pattern in a pattern forming step in which said processing film supplied onto said mold surface in said film supply step is pressed against said mold surface so that said pattern on said mold surface is transferred to a surface of said processing film to form a fine asperity pattern on the surface of said processing film,(1-c) peeling the film in a film peeling step in which a processed film having said pattern formed on its surface in said pattern forming step is peeled off from said mold surface, and(1-d) delivering the film in a film delivery step in which said processed film peeled off from said mold surface in said film peeling step is delivered to a long film strip storage source provided on a downstream side,thus processing the film in said pattern forming step to produce said processed film, peeling it off from said mold surface in said film peeling step, and then delivering said processed film to said film storage source in said film delivery step while another predetermined length of said processing film to be processed next is supplied intermittently onto said mold surface, in order to perform repeated production of said processed film with a predetermined length at a time, wherein(1-e) the peeling of said processed film in said film peeling step is achieved by a film holding means that holds said processed film and moves along said mold surface from the downstream side toward the upstream side in the length direction of said processed film, and(1-f) the supply of said processing film in said film supply step is achieved as a crease formation prevention means to prevent creases from forming on said processing film supplied onto said mold surface moves from the upstream side toward the downstream side in the length direction of said processed film. 2. The film production method according to claim 1, wherein (2-a) said film holding means comprises a combination of a main roll that comes in contact with the opposite surface of said film to the surface on which said pattern is formed and an auxiliary roll that comes in contact with the surface of said film on which said pattern is formed, and in said combination, both the roll axis of said main roll and that of said auxiliary roll are arranged respectively in the width direction of said film, said main roll and said auxiliary roll are in parallel to each other with a sufficient gap for said film to pass between them, and both said main roll and said auxiliary roll are respectively rotatable,(2-b) said processed film is suspended on said main roll and said auxiliary roll through an S-shaped path to allow said main roll and said auxiliary roll to hold said processed film, and after achieving such a film-holding state, said film holding means peels off said processed film from said mold surface,(2-c) said main roll and said auxiliary roll rotate while said film holding means stays at a position that it has reached after moving to the upstream side, in order to cause a new predetermined length of the processing film to be supplied to the downstream side via said main roll and said auxiliary roll, and after completion of the supply of said new predetermined length of the processing film,(2-d) said main roll is used as said crease formation prevention means, and(2-e) while said film holding means moves along said mold surface from the upstream side toward the downstream side, said main roll rotates as it moves so that said new predetermined length of the processing film is supplied onto said mold surface while preventing creases from being formed in said processing film. 3. The film production method according to claim 1, wherein (3-a) said film holding means comprises a combination of a main roll that comes in contact with the opposite surface of said film to the surface on which said pattern is formed and an auxiliary roll that comes in contact with the surface of said film on which said pattern is formed, and in said combination, both the roll axis of said main roll and that of said auxiliary roll are arranged respectively in the width direction of said film, said main roll and said auxiliary roll are in parallel to each other with a sufficient gap for said film to pass between them, and both said main roll and said auxiliary roll are respectively rotatable,(3-b) said processed film is suspended on said main roll and said auxiliary roll through an S-shaped path to allow said main roll and said auxiliary roll to hold said processed film, and after achieving such a film-holding state, said film holding means moves along said mold surface from the downstream side toward the upstream side, in order to peel off said processed film from said mold surface,(3-c) said main roll and said auxiliary roll rotate while said film holding means stays at a position that it has reached after moving to the upstream side, in order to cause a new predetermined length of the processing film to be supplied to the downstream side via said main roll and said auxiliary roll, and after completion of the supply of said new predetermined length of the processing film,(3-d) a rotatable crease-smoothing roll that is located on the upstream side of said main roll, with a space from, and in parallel to, said main roll, and in contact with the opposite surface of said film to the surface on which said pattern is formed, is used as said crease formation prevention means, and(3-e) while said film holding means moves along said mold surface from the upstream side toward the downstream side, said crease-smoothing roll moves, while rotating, in coordination with the movement of said film holding means, in order to prevent the formation of creases in said processing film and simultaneously supply said new predetermined length of the processing film onto said mold surface. 4. The film production method according to claim 1, wherein (4-a) said film holding means comprises a combination of a main roll that comes in contact with the opposite surface of said film to the surface on which said pattern is formed and an auxiliary roll that comes in contact with the surface of said film on which said pattern is formed, and in said combination, both the roll axis of said main roll and that of said auxiliary roll are arranged respectively in the width direction of said film, said main roll and said auxiliary roll are in parallel to each other with a sufficient gap for said film to pass between them, and both said main roll and said auxiliary roll are respectively rotatable,(4-b) said processed film is suspended on said main roll and said auxiliary roll through an S-shaped path to allow said main roll and said auxiliary roll to hold said processed film, and after achieving such a film-holding state, said film holding means moves along said mold surface from the downstream side toward the upstream side, in order to peel off said processed film from said mold surface,(4-c) while said main roll is prevented from rotating after said film holding means has moved to the upstream side and comes to a halt, said film holding means moves from the upstream side toward the downstream side to supply a new predetermined length of the processing film,(4-d) a rotatable crease-smoothing roll that is located on the upstream side of said main roll, with a space from, and in parallel to, said main roll, and in contact with the opposite surface of said film to the surface on which said pattern is formed, is used as said crease formation prevention means, and(4-e) while said film holding means moves along said mold surface from the upstream side toward the downstream side during said processing film supply process, said crease-smoothing roll moves, while rotating, in coordination with the movement of said film holding means, in order to prevent the formation of creases in said processing film and simultaneously supply said new predetermined length of the processing film onto said mold surface.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (1)
Bodnar Ernest Robert (R.R. No. 1 Kingsworth Road ; Kingscross Estates King City CA), Method and apparatus for embossing sheet metal strip and sheet metal panel.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.