GB1066493A - Process and apparatus for the manufacture of films in sheet form by melt extrusion - Google Patents

Process and apparatus for the manufacture of films in sheet form by melt extrusion

Info

Publication number
GB1066493A
GB1066493A GB31611/64A GB3161164A GB1066493A GB 1066493 A GB1066493 A GB 1066493A GB 31611/64 A GB31611/64 A GB 31611/64A GB 3161164 A GB3161164 A GB 3161164A GB 1066493 A GB1066493 A GB 1066493A
Authority
GB
United Kingdom
Prior art keywords
box
roller
peripheral surface
die
films
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
GB31611/64A
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Publication of GB1066493A publication Critical patent/GB1066493A/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
    • B29C48/917—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means by applying pressurised gas to the surface of the flat article
    • 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
    • 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
    • B29C48/916—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means using vacuum

Abstract

1,066,493. Making flat films by melt extrusion. KALLE A.G. Aug. 4, 1964 [Aug. 6, 1963], No. 31611/64. Heading B5B. Films in sheet form are made by downwardly melt-extruding a normally solid thermoplastic organic polymer through the slot-shaped extrusion orifice of a die E (Fig. 1, not shown) on to a rotating roller F immediately below and parallel to the die orifice to form a quenched film H. A suction box A is bounded on one side by the die E and on another is sealed by the peripheral surface of the roller and the interposed resilient arcuate seals G. Suction is applied to the box A through a pipe J, thereby reducing the air pressure in space D. The extruded melt H is thereby drawn vertically downwards into intimate contact with the roller F instead of following an inclined free path to the right. The peripheral surface of the roller is maintained at a quenching temperature below that at which the film would adhere to the surface if no vacuum were applied. The roller F is rotated in the direction shown by the arrow. Instead of applying suction to the box A through the pipe J (which communicates with a source of reduced pressure), the reduced pressure in the box Amay be maintained by means of an air injector nozzle the outlet of which is positioned in an aperture of the box near the peripheral surface of the roller F where it first approaches the box. The process increases the degree to which the molten film can be quenched and enables fibres of a more amorphous nature to be obtained.
GB31611/64A 1963-08-06 1964-08-04 Process and apparatus for the manufacture of films in sheet form by melt extrusion Expired GB1066493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK0050440 1963-08-06

Publications (1)

Publication Number Publication Date
GB1066493A true GB1066493A (en) 1967-04-26

Family

ID=7225620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31611/64A Expired GB1066493A (en) 1963-08-06 1964-08-04 Process and apparatus for the manufacture of films in sheet form by melt extrusion

Country Status (2)

Country Link
DE (1) DE1504450B1 (en)
GB (1) GB1066493A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535330A1 (en) * 1974-08-07 1976-02-19 Ici Ltd PROCESS AND DEVICE FOR EXTRUDING AND QUILLING A POLYMERIC FILM
US4111625A (en) * 1974-08-07 1978-09-05 Imperial Chemical Industries Limited Polymeric film production
US4885352A (en) * 1987-03-11 1989-12-05 Dowbrands Inc. Transparent plastic film comprising low density polyethylene

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB741818A (en) * 1951-08-23 1955-12-14 Kodak Ltd An improved method of manufacturing film and sheet material
GB894147A (en) * 1959-06-05 1962-04-18 Sales And Dev Company Of Nat D Extrusion process and apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535330A1 (en) * 1974-08-07 1976-02-19 Ici Ltd PROCESS AND DEVICE FOR EXTRUDING AND QUILLING A POLYMERIC FILM
US4111625A (en) * 1974-08-07 1978-09-05 Imperial Chemical Industries Limited Polymeric film production
US4885352A (en) * 1987-03-11 1989-12-05 Dowbrands Inc. Transparent plastic film comprising low density polyethylene

Also Published As

Publication number Publication date
DE1504450B1 (en) 1971-01-07

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