JPS6485749A - Composition plastic light screening material - Google Patents

Composition plastic light screening material

Info

Publication number
JPS6485749A
JPS6485749A JP62122159A JP12215987A JPS6485749A JP S6485749 A JPS6485749 A JP S6485749A JP 62122159 A JP62122159 A JP 62122159A JP 12215987 A JP12215987 A JP 12215987A JP S6485749 A JPS6485749 A JP S6485749A
Authority
JP
Japan
Prior art keywords
film
light screening
shrinkage factor
heat shrinkage
carbon fibers
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
Application number
JP62122159A
Other languages
Japanese (ja)
Other versions
JPH0466179B2 (en
Inventor
Hajime Nakayama
Koichi Oyoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Electronics Inc
Original Assignee
Canon Electronics Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Electronics Inc filed Critical Canon Electronics Inc
Priority to JP62122159A priority Critical patent/JPS6485749A/en
Publication of JPS6485749A publication Critical patent/JPS6485749A/en
Publication of JPH0466179B2 publication Critical patent/JPH0466179B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Diaphragms For Cameras (AREA)
  • Shutters For Cameras (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE:To provide lightweight and highly rigid composite plastic light screening material by a method wherein plastic film, the longitudinal and lateral heat shrinkage factor characteristics are different from each other, is employed so as to set the direction, in which the heat shrinkage factor is larger than that in the other direction, nearly perpendicular to the paralleling direction of carbon fibers. CONSTITUTION:Continuous carbon fibers are reinforced by impregnating with matrix resin and formed in prepreg sheets (1-a) and (1-b). The composite plastic light screening material is formed by laminating surface layer parts, which are respectively produced by laminating heat shrinkable plastic films (3-a) and (3-b) onto one side of each of said prepreg sheets, onto both the sides of a core material part 2 made of plastic film. The preferable heat shrinkable plastic film used in the surface layer part is biaxially stretched polyester film. Further, polyester film, the longitudinal and lateral heat shrinkage factor characteristics are different from each other, is suitable for the core material par 2. The direction, in which the heat shrinkage factor is larger than that in the other direction, is set nearly perpendicular to the paralleling direction of the carbon fibers. Furthermore, in order to improve the light screening property, film coated with thin metal film or colored film impregnated with black pigment is used in the core part.
JP62122159A 1987-05-19 1987-05-19 Composition plastic light screening material Granted JPS6485749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62122159A JPS6485749A (en) 1987-05-19 1987-05-19 Composition plastic light screening material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62122159A JPS6485749A (en) 1987-05-19 1987-05-19 Composition plastic light screening material

Publications (2)

Publication Number Publication Date
JPS6485749A true JPS6485749A (en) 1989-03-30
JPH0466179B2 JPH0466179B2 (en) 1992-10-22

Family

ID=14829055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62122159A Granted JPS6485749A (en) 1987-05-19 1987-05-19 Composition plastic light screening material

Country Status (1)

Country Link
JP (1) JPS6485749A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH058548U (en) * 1991-07-22 1993-02-05 株式会社精工舎 Sliding sheet
US6190060B1 (en) 1997-07-16 2001-02-20 Nidec Copal Corporation Light-shielding blade composed of beryllium-aluminum alloy for camera
KR20020086784A (en) * 2001-05-11 2002-11-20 린통샨 Method for forming carbon fiber layer
US6818287B1 (en) 1998-09-02 2004-11-16 Nidec Copal Corporation Light shielding blade material for optical apparatus
JP5153008B2 (en) * 2007-06-20 2013-02-27 株式会社きもと Light shielding member for optical equipment
EP2894031A1 (en) * 2014-01-08 2015-07-15 Canon Denshi Kabushiki Kaisha Fiber-reinforced laminate and camera

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH058548U (en) * 1991-07-22 1993-02-05 株式会社精工舎 Sliding sheet
US6190060B1 (en) 1997-07-16 2001-02-20 Nidec Copal Corporation Light-shielding blade composed of beryllium-aluminum alloy for camera
US6502296B2 (en) 1997-07-16 2003-01-07 Copal Company Limited Method of fabricating a light-shielding blade composed of beryllium-aluminum alloy
US6818287B1 (en) 1998-09-02 2004-11-16 Nidec Copal Corporation Light shielding blade material for optical apparatus
KR20020086784A (en) * 2001-05-11 2002-11-20 린통샨 Method for forming carbon fiber layer
JP5153008B2 (en) * 2007-06-20 2013-02-27 株式会社きもと Light shielding member for optical equipment
EP2894031A1 (en) * 2014-01-08 2015-07-15 Canon Denshi Kabushiki Kaisha Fiber-reinforced laminate and camera
JP2015193214A (en) * 2014-01-08 2015-11-05 キヤノン電子株式会社 Fiber-reinforced laminate, shutter blade, shutter device and camera
US9588401B2 (en) 2014-01-08 2017-03-07 Canon Denshi Kabushiki Kaisha Fiber-reinforced laminate, shutter device and camera

Also Published As

Publication number Publication date
JPH0466179B2 (en) 1992-10-22

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