GB1446596A - Casting of polymeric film - Google Patents

Casting of polymeric film

Info

Publication number
GB1446596A
GB1446596A GB603173A GB603173A GB1446596A GB 1446596 A GB1446596 A GB 1446596A GB 603173 A GB603173 A GB 603173A GB 603173 A GB603173 A GB 603173A GB 1446596 A GB1446596 A GB 1446596A
Authority
GB
United Kingdom
Prior art keywords
electrode
casting
polymeric film
voltage
molten
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
GB603173A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB603173A priority Critical patent/GB1446596A/en
Priority to IT20263/74A priority patent/IT1006292B/en
Priority to DE2405863A priority patent/DE2405863B2/en
Priority to BE140670A priority patent/BE810746A/en
Priority to FR7404113A priority patent/FR2216088B1/fr
Priority to LU69344A priority patent/LU69344A1/xx
Priority to NL7401685A priority patent/NL7401685A/xx
Priority to AU65333/74A priority patent/AU6533374A/en
Priority to JP49015004A priority patent/JPS49116160A/ja
Priority to US05/599,935 priority patent/US4046842A/en
Publication of GB1446596A publication Critical patent/GB1446596A/en
Priority to US05/793,429 priority patent/US4162139A/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
    • B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
    • B29C48/9165—Electrostatic pinning
    • 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
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

1446596 Casting polymeric film IMPERIAL CHEMICAL INDUSTRIES Ltd 7 Feb 1974 [7 Feb 1973] 6031/73 Heading B5B [Also in Division H1] A molten polymeric film 1 is quenched by passing over an electrically earthed casting surface 2 cooled by the passage of a quenching fluid flowing through inlet 3 and outlet 4 and is held to the drum electrostatically by means of a pinning wire electrode 8 connected to a source 15 of assymmetrical A.C. supply capable of applying to the electrode an alternating voltage said voltage being of symmetrical or asymmetrical wave form and exceeding 4À0 kv. peak to peak and having a frequency not exceeding that at which positive and negative electrostatic charges emitted by the electrode are unable to cross the space between the electrode and the molten film before the polarity of the voltage on the electrode changes and whereby the electrostatic charges emitted by the electrode are deposited on the molten film to cause it to adhere to the casting surface.
GB603173A 1973-02-07 1973-02-07 Casting of polymeric film Expired GB1446596A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
GB603173A GB1446596A (en) 1973-02-07 1973-02-07 Casting of polymeric film
IT20263/74A IT1006292B (en) 1973-02-07 1974-02-06 IMPROVEMENTS RELATING TO THE CO LATE OF POLYMERIC FILMS
LU69344A LU69344A1 (en) 1973-02-07 1974-02-07
BE140670A BE810746A (en) 1973-02-07 1974-02-07 CASTING OF POLYMERIC FILMS
FR7404113A FR2216088B1 (en) 1973-02-07 1974-02-07
DE2405863A DE2405863B2 (en) 1973-02-07 1974-02-07 Apparatus for electrostatically adhering a molten polymer film to a casting surface in order to cool it down
NL7401685A NL7401685A (en) 1973-02-07 1974-02-07
AU65333/74A AU6533374A (en) 1973-02-07 1974-02-07 Improvements in the casting of polymeric film
JP49015004A JPS49116160A (en) 1973-02-07 1974-02-07
US05/599,935 US4046842A (en) 1973-02-07 1975-07-28 Casting of polymeric film
US05/793,429 US4162139A (en) 1973-02-07 1977-05-03 Casting of polymeric film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB603173A GB1446596A (en) 1973-02-07 1973-02-07 Casting of polymeric film

Publications (1)

Publication Number Publication Date
GB1446596A true GB1446596A (en) 1976-08-18

Family

ID=9807172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB603173A Expired GB1446596A (en) 1973-02-07 1973-02-07 Casting of polymeric film

Country Status (9)

Country Link
JP (1) JPS49116160A (en)
AU (1) AU6533374A (en)
BE (1) BE810746A (en)
DE (1) DE2405863B2 (en)
FR (1) FR2216088B1 (en)
GB (1) GB1446596A (en)
IT (1) IT1006292B (en)
LU (1) LU69344A1 (en)
NL (1) NL7401685A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026028A1 (en) * 1979-08-01 1981-04-01 Imperial Chemical Industries Plc Apparatus and process for extruding and quenching a thermoplastics film
EP2292423A1 (en) * 1998-01-13 2011-03-09 Minnesota Mining And Manufacturing Company Color shifting film

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2460432C3 (en) * 1974-12-20 1984-01-05 Klaus 4803 Steinhagen Kalwar Process for the continuous production of a flat film web from thermoplastic material or of two- or three-layer, web-shaped composite materials and device for the production of two-layer, web-shaped composite materials
DE2540681C3 (en) * 1975-09-12 1979-03-08 Hoechst Ag, 6000 Frankfurt Device for the surface treatment of foil webs by means of electrical discharges
JPS57207024A (en) * 1981-06-17 1982-12-18 Diafoil Co Ltd Manufacture of sheet or film of thermoplastic resin
JPS60214922A (en) * 1984-04-11 1985-10-28 Sumitomo Bakelite Co Ltd Manufacture of thermoplastic resin film
JP2587275B2 (en) * 1988-08-01 1997-03-05 横浜ゴム株式会社 Rubber composition for tire
DE102019112077A1 (en) 2019-05-09 2020-11-12 Brückner Maschinenbau GmbH & Co. KG Plant for the production of a cast film and film stretching plant with such a plant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026028A1 (en) * 1979-08-01 1981-04-01 Imperial Chemical Industries Plc Apparatus and process for extruding and quenching a thermoplastics film
US4309368A (en) 1979-08-01 1982-01-05 Imperial Chemical Industries Limited Electrostatic pinning of extruded thermoplastic film
EP2292423A1 (en) * 1998-01-13 2011-03-09 Minnesota Mining And Manufacturing Company Color shifting film

Also Published As

Publication number Publication date
DE2405863B2 (en) 1975-12-04
IT1006292B (en) 1976-09-30
LU69344A1 (en) 1975-05-21
AU6533374A (en) 1975-08-07
FR2216088A1 (en) 1974-08-30
DE2405863A1 (en) 1974-08-22
NL7401685A (en) 1974-08-09
BE810746A (en) 1974-08-07
JPS49116160A (en) 1974-11-06
FR2216088B1 (en) 1976-10-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee