GB602434A - Process and apparatus for forming films and coatings - Google Patents

Process and apparatus for forming films and coatings

Info

Publication number
GB602434A
GB602434A GB34391/45A GB3439145A GB602434A GB 602434 A GB602434 A GB 602434A GB 34391/45 A GB34391/45 A GB 34391/45A GB 3439145 A GB3439145 A GB 3439145A GB 602434 A GB602434 A GB 602434A
Authority
GB
United Kingdom
Prior art keywords
film
liquid
pict
weir
drum
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
GB34391/45A
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US571048A external-priority patent/US2439802A/en
Application filed by Individual filed Critical Individual
Publication of GB602434A publication Critical patent/GB602434A/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
    • B29C48/911—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
    • B29C48/03—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
    • B29C48/91—Heating, e.g. for cross linking

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Moulding By Coating Moulds (AREA)
  • Coating Apparatus (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

<PICT:0602434/IV(a)/1> An apparatus for making self-sustaining films is of the type in which an upwardly-moving film-receiving surface picks up a film of liquid as it engages with the lip of a weir over which the body of filmforming liquid flows and is characterised in that the weir is of flexible material whereby it forms a seal with the film-receiving surface and prevents seepage of liquid downwardly. The film-receiving surface comprises a rotating drum, endless band or long web from which the film is subsequently stripped. The film-forming liquid L (Fig. 1) is contained in reservoir 2, the weir-wall 3 of which is of flexible material and bears against the surface A of the casting drum 1. The liquid L is maintained above the top edge of the wall 3 by a constant-level device so that a layer of liquid is drawn upwardly by the drum surface. The liquid layer is converted into a film by evaporation, cooling or oxidation <PICT:0602434/IV(a)/2> <PICT:0602434/IV(a)/3> <PICT:0602434/IV(a)/4> <PICT:0602434/IV(a)/5> <PICT:0602434/IV(a)/6> and the film is stripped from the drum by roll 4. In a modification, an endless belt replaces the drum 1 and the layer of liquid is converted into a film by passing the belt through a solidification chamber. The liquid reservoir may take the form shown in Figs. 4, 6, 7, 8, wherein the weir-wall 3, 3a, 3b and 3d respectively is of flexible material, the ends of the reservoir being closed by relatively movable dams 23 (Fig. 5). The thickness of the film is governed by the viscosity of the film-forming liquid and the speed of the film-receiving surface. Effect materials such as metallic powders, pigments, dyestuffs and short fibres may be scattered on to the surface of the freshly-formed film. Numerous types of flexible material suitable for the construction of the weir are given in the Specification, as also are numerous types of film-forming liquids. The apparatus may also be employed for coating sheet materials with a film-forming substance (see Group VIII).
GB34391/45A 1945-01-02 1945-12-19 Process and apparatus for forming films and coatings Expired GB602434A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US602434XA 1945-01-02 1945-01-02
US571048A US2439802A (en) 1945-01-02 1945-01-02 Apparatus for forming films and coatings

Publications (1)

Publication Number Publication Date
GB602434A true GB602434A (en) 1948-05-26

Family

ID=26739727

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34391/45A Expired GB602434A (en) 1945-01-02 1945-12-19 Process and apparatus for forming films and coatings

Country Status (2)

Country Link
FR (1) FR961956A (en)
GB (1) GB602434A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118150B (en) * 1954-12-10 1961-11-30 Us Rubber Co Process for the production of coated fabrics
DE1136098B (en) * 1956-02-17 1962-09-06 Du Pont Process for the production of self-supporting, porous foils from chlorosulfonated ethylene polymers
DE1234974B (en) * 1957-01-11 1967-02-23 Mortimer Mark Marks Process for the continuous production of plastic films and apparatus for carrying out the process
CN111707421A (en) * 2020-08-09 2020-09-25 吴本高 Water meter sealing leakage detection device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480669A1 (en) * 1980-04-17 1981-10-23 Saint Gobain Vitrage METHOD AND DEVICE FOR MANUFACTURING PLASTIC SHEETS OF HIGH-QUALITY OPTICAL QUALITY AND PRODUCTS OBTAINED

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118150B (en) * 1954-12-10 1961-11-30 Us Rubber Co Process for the production of coated fabrics
DE1136098B (en) * 1956-02-17 1962-09-06 Du Pont Process for the production of self-supporting, porous foils from chlorosulfonated ethylene polymers
DE1234974B (en) * 1957-01-11 1967-02-23 Mortimer Mark Marks Process for the continuous production of plastic films and apparatus for carrying out the process
CN111707421A (en) * 2020-08-09 2020-09-25 吴本高 Water meter sealing leakage detection device

Also Published As

Publication number Publication date
FR961956A (en) 1950-05-26

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