JPS57190606A - Method and apparatus for preparing composite film - Google Patents

Method and apparatus for preparing composite film

Info

Publication number
JPS57190606A
JPS57190606A JP56073716A JP7371681A JPS57190606A JP S57190606 A JPS57190606 A JP S57190606A JP 56073716 A JP56073716 A JP 56073716A JP 7371681 A JP7371681 A JP 7371681A JP S57190606 A JPS57190606 A JP S57190606A
Authority
JP
Japan
Prior art keywords
roller
film
thin film
water surface
ultra
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
JP56073716A
Other languages
Japanese (ja)
Other versions
JPS5835723B2 (en
Inventor
Yoshimasa Ito
Yukihiro Saito
Shiro Asakawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56073716A priority Critical patent/JPS5835723B2/en
Publication of JPS57190606A publication Critical patent/JPS57190606A/en
Publication of JPS5835723B2 publication Critical patent/JPS5835723B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/122—Separate manufacturing of ultra-thin membranes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To form an ultra-thin film of a polymer having low tensile strength, by a method wherein a polymer solution is discharged onto a water surface at a constant speed and the formed ultra-thin film is taken up by a rotary roller in contact with the water surface. CONSTITUTION:A solution of polydimethylsiloxane in benzene is stored in a tank 4 and continuously discharged onto a water surface in a water tank 9 from a dot-like discharge port 6 through a conduit 5. The solide film grown on the water surface is taken up on the surface of a roller 3 rotating at a constant speed and, on the other hand, a porous film 7 having a pore size of about 0.5mu or less is supplied in contact with the roller 3 by using a roller 2 as the guide and the solid film adhered onto the roller 3 is transferred to the porous film 7 to be taken up a roller 11. As the porous film 7, a Millipore filter membrane or Duragard can be used. By this method, from a polydimethylsiloxane material which has been believed to be difficultly formed into an ultra-thin film, a thin film with thickness of 0.5mu or less can be continuously prepared.
JP56073716A 1981-05-15 1981-05-15 Composite membrane manufacturing method and device Expired JPS5835723B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56073716A JPS5835723B2 (en) 1981-05-15 1981-05-15 Composite membrane manufacturing method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56073716A JPS5835723B2 (en) 1981-05-15 1981-05-15 Composite membrane manufacturing method and device

Publications (2)

Publication Number Publication Date
JPS57190606A true JPS57190606A (en) 1982-11-24
JPS5835723B2 JPS5835723B2 (en) 1983-08-04

Family

ID=13526217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56073716A Expired JPS5835723B2 (en) 1981-05-15 1981-05-15 Composite membrane manufacturing method and device

Country Status (1)

Country Link
JP (1) JPS5835723B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583830A (en) * 1981-06-30 1983-01-10 Teijin Ltd Manufacture of extremely thin film
EP0134055A2 (en) * 1983-08-02 1985-03-13 Shell Internationale Researchmaatschappij B.V. Composite dense membrane and fluid(s) separation process carried out therewith

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583830A (en) * 1981-06-30 1983-01-10 Teijin Ltd Manufacture of extremely thin film
EP0134055A2 (en) * 1983-08-02 1985-03-13 Shell Internationale Researchmaatschappij B.V. Composite dense membrane and fluid(s) separation process carried out therewith

Also Published As

Publication number Publication date
JPS5835723B2 (en) 1983-08-04

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