GB344982A - Improved manufacture of foils from viscous solutions - Google Patents

Improved manufacture of foils from viscous solutions

Info

Publication number
GB344982A
GB344982A GB152/30A GB15230A GB344982A GB 344982 A GB344982 A GB 344982A GB 152/30 A GB152/30 A GB 152/30A GB 15230 A GB15230 A GB 15230A GB 344982 A GB344982 A GB 344982A
Authority
GB
United Kingdom
Prior art keywords
roller
precipitating bath
film
carried
foils
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.)
Expired
Application number
GB152/30A
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.)
Zellsloff Fabrik Waldhof AG
Original Assignee
Zellsloff Fabrik Waldhof AG
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 Zellsloff Fabrik Waldhof AG filed Critical Zellsloff Fabrik Waldhof AG
Publication of GB344982A publication Critical patent/GB344982A/en
Expired legal-status Critical Current

Links

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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • 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
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

<PICT:0344982/IV/1> Films and foils are produced from viscous solutions of cellulose, cellulose compounds, gelatine, or like substances by applying the solution in the wedge-shaped space between two smooth rollers adjustable with respect to their distance apart and rotating in opposite directions, the solution being carried by the roller surfaces in the form of a thin layer into a precipitating bath or evaporative medium such as hot air. If both rollers dip into a precipitating bath, two film foils are produced simultaneously. The film is stripped off the roller inside or outside the precipitating bath and is carried forward for further treatment. The thickness of the film is regulated by the adjustable clearance between the two rollers. Owing to the constant movement of the roller surfaces forming the walls of the pouring out opening, viscous liquids in unfiltered condition may be used. As shown in the Figure, viscous liquid such as viscose is applied at 4 between the smooth rollers 1, 2 rotating in the direction shown by the arrows. The liquid layer on roller 1 is carried into the precipitating bath 3 and is solidified. The film is drawn off by the roller 5, carried again into the precipitating bath by means of roller 6 and then washed and further treated in known manner.
GB152/30A 1929-02-28 1930-01-02 Improved manufacture of foils from viscous solutions Expired GB344982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE344982X 1929-02-28

Publications (1)

Publication Number Publication Date
GB344982A true GB344982A (en) 1931-03-19

Family

ID=6254320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB152/30A Expired GB344982A (en) 1929-02-28 1930-01-02 Improved manufacture of foils from viscous solutions

Country Status (1)

Country Link
GB (1) GB344982A (en)

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