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GB345179A - Process for the production of foils from solutions of cellulose compounds, gelatine and the like - Google Patents

Process for the production of foils from solutions of cellulose compounds, gelatine and the like

Info

Publication number
GB345179A
GB345179A GB20010/30A GB2001030A GB345179A GB 345179 A GB345179 A GB 345179A GB 20010/30 A GB20010/30 A GB 20010/30A GB 2001030 A GB2001030 A GB 2001030A GB 345179 A GB345179 A GB 345179A
Authority
GB
United Kingdom
Prior art keywords
layer
solution
thickness
pouring
coagulating bath
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
GB20010/30A
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.)
Dow Produktions und Vertriebs GmbH and Co oHG
Original Assignee
Wolff and Co 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 Wolff and Co AG filed Critical Wolff and Co AG
Publication of GB345179A publication Critical patent/GB345179A/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
    • 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
    • B29C48/914—Cooling drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

<PICT:0345179/IV/1> Foils and films are obtained from solutions of cellulose compounds, gelatine and like substances with the aid of a travelling pouring base partly immersed in a coagulating bath, the process being carried out in such manner that the solution is allowed to coagulate only to a certain depth, and the coagulated layer is stripped off, leaving a residual uncoagulated layer on the pouring base. The thickness of the foil produced is controlled by the speed of travel of the pouring base, the temperature of the solution, the temperature and concentration of the coagulating bath, the thickness of solution applied to the base, and the point at which stripping takes place. As shown in the Figure, solution such as viscose flows from the slit of a pouring device 1 to form a layer of thickness a on a drum 2 which rotates in the direction of the arrow 3 and dips into a coagulating bath 4. When the layer of solution has coagulated to a depth b, the coagulated layer is stripped by the roll 5 and is led as a freely suspended foil 6 over the guiderolls 7, 8 out of the coagulating bath to further treatment baths. There remains on the drum 2 an uncoagulated residual layer of thickness c. Upon this layer fresh viscose solution is applied by the pouring device 1. Instead of a drum an endless band may be employed as pouring base.
GB20010/30A 1929-07-22 1930-07-01 Process for the production of foils from solutions of cellulose compounds, gelatine and the like Expired GB345179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE345179X 1929-07-22

Publications (1)

Publication Number Publication Date
GB345179A true GB345179A (en) 1931-03-19

Family

ID=6254440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20010/30A Expired GB345179A (en) 1929-07-22 1930-07-01 Process for the production of foils from solutions of cellulose compounds, gelatine and the like

Country Status (2)

Country Link
AT (1) AT124265B (en)
GB (1) GB345179A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195576A (en) * 1986-08-27 1988-04-13 Hoechst Ag Cooling process and apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719242A1 (en) * 1987-06-06 1988-12-15 Roehm Gmbh METHOD AND DEVICE FOR PRODUCING PLASTIC FILMS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195576A (en) * 1986-08-27 1988-04-13 Hoechst Ag Cooling process and apparatus
GB2195576B (en) * 1986-08-27 1990-01-04 Hoechst Ag Cooling process and apparatus

Also Published As

Publication number Publication date
AT124265B (en) 1931-08-25

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