FI70540C - Foerfarande och anordning foer tillverkning av en bana av skummat termoplastiskt material - Google Patents

Foerfarande och anordning foer tillverkning av en bana av skummat termoplastiskt material Download PDF

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Publication number
FI70540C
FI70540C FI792596A FI792596A FI70540C FI 70540 C FI70540 C FI 70540C FI 792596 A FI792596 A FI 792596A FI 792596 A FI792596 A FI 792596A FI 70540 C FI70540 C FI 70540C
Authority
FI
Finland
Prior art keywords
hose
calibration
pressure medium
thermoplastic material
cooling
Prior art date
Application number
FI792596A
Other languages
English (en)
Finnish (fi)
Other versions
FI792596A (fi
FI70540B (fi
Inventor
Lennart Nilsson
Sven-Olof Andren
Per-Allan Ljungberg
Original Assignee
Tetra Pak Int
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 Tetra Pak Int filed Critical Tetra Pak Int
Publication of FI792596A publication Critical patent/FI792596A/fi
Application granted granted Critical
Publication of FI70540B publication Critical patent/FI70540B/fi
Publication of FI70540C publication Critical patent/FI70540C/fi

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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/507—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through an annular die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Claims (5)

1. Förfarande för tillverkning av en bana av skummat termo-plastiskt material, vilket förfarande omfattar extrudering av det termoplastiska materialet tili en slang frän ett munstycke (1), ut-vidgning av slangen (3) via en övergängsdel som bildar en slang-blisa (3') med hjälp av ett tryckmedium, som strömmar ur en öppning (10) anordnad pä en dorn (4), som ligger inne i slangen axiellt pa-rallellt med munstycket, kalibrering och kylning av den utvidgade slangen (3) i ett kalibreringsorgan (5), varvid tryckmediet bringas att strömma utmed slangens inre yta för att upprätthälla kontakten mellan slangens yttre yta och kalibreringsorganet, axiell uppskär-ning av slangen dä denna kylts tili en temperatur under materialets mjukningstemperatur och omformning av den uppskurna slangen tili banform, kännetecknat därav, att tryckmediet bringas att strömma ur dornens (4) öppning (10), som är anordnad i kalibre-ringsorganets (5) uppströmsände, där slangens (3) utvidgning upp-hör och att öppningen (10) bildar en ringformig utströmningsöppning omkring dornens (4) axel i slangens (3) rörelseriktning sä, att öppningen (10) inte riktar tryckmediet tili slangbläsan (3').
2. Förfarande enligt patentkravet 1, kännetecknat därav, att tryckmediets strömningshastighet bringar att överstiga slangens (3) rörelsehastighet.
3. Förfarande enligt patentkravet 1 eller 2, kännetecknat därav, att ett tryckmedium riktas mot slangens (3)
FI792596A 1978-08-22 1979-08-21 Foerfarande och anordning foer tillverkning av en bana av skummat termoplastiskt material FI70540C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7808847 1978-08-22
SE7808847A SE429941B (sv) 1978-08-22 1978-08-22 Sett och anordning for tillverkning av en materialbana av skummad termoplast

Publications (3)

Publication Number Publication Date
FI792596A FI792596A (fi) 1980-02-23
FI70540B FI70540B (fi) 1986-06-06
FI70540C true FI70540C (fi) 1986-09-24

Family

ID=20335631

Family Applications (1)

Application Number Title Priority Date Filing Date
FI792596A FI70540C (fi) 1978-08-22 1979-08-21 Foerfarande och anordning foer tillverkning av en bana av skummat termoplastiskt material

Country Status (17)

Country Link
US (1) US4261939A (sv)
EP (1) EP0008689B1 (sv)
JP (1) JPS5528899A (sv)
AR (1) AR218156A1 (sv)
AT (1) AT375871B (sv)
AU (1) AU528880B2 (sv)
BR (1) BR7905388A (sv)
CA (1) CA1143117A (sv)
DE (1) DE2965110D1 (sv)
DK (1) DK151373C (sv)
ES (2) ES483526A1 (sv)
FI (1) FI70540C (sv)
MX (1) MX150996A (sv)
NO (1) NO154119C (sv)
PT (1) PT70082A (sv)
SE (1) SE429941B (sv)
ZA (1) ZA794184B (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243632A1 (de) * 1982-11-25 1984-05-30 Flewu AG, 9000 St. Gallen Verfahren und vorrichtung zur sinterung insbesondere unterschiedlicher formlinge aus insbesondere verschiedenartigen schaeumbaren kunststoffen
DE4412799B4 (de) * 1994-04-14 2004-07-22 Depron B.V. Kühldorn mit einem zylindrischen Grundkörper aus Metall
US6428297B1 (en) * 1998-10-28 2002-08-06 Dart Container Corporation Apparatus for making a corrugation-free foam
PT1170217E (pt) * 2000-07-07 2003-10-31 Tetra Laval Holdings & Finance Unidade para processamento de uma banda dematerial de embalagem para producao de embalagens seladas de produtos alimentares vazaveis
CN113977843B (zh) * 2021-11-11 2023-03-21 张家港力勤机械有限公司 一种聚氨酯板材的成型加工设备

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917217A (en) * 1956-04-30 1959-12-15 St Regis Paper Co Foamed polystyrene article
LU36523A1 (sv) * 1958-05-21 1900-01-01
US3560600A (en) * 1963-11-07 1971-02-02 Dow Chemical Co Surface treatment on extruded plastic foam
DE1504791A1 (de) * 1964-09-05 1969-10-16 Reifenhaeuser Kg Folienblasanlage
BE722009A (sv) * 1967-10-13 1969-03-14
US3539666A (en) * 1968-06-18 1970-11-10 Grace W R & Co Method for preparing a nonwoven fabriclike member
US3751537A (en) * 1970-01-12 1973-08-07 Owens Illinois Inc Process for controlling dimensions of the product in foamed plastic extrusion
US3775035A (en) * 1970-01-12 1973-11-27 Owens Illinois Inc Foam plastic extrusion apparatus with plurality of die lip temperature controls
GB1295205A (sv) * 1970-07-24 1972-11-08
US3835209A (en) * 1971-11-09 1974-09-10 Owens Illinois Inc Process of extruding a foamed extrudate and controlling the thickness thereof
JPS4862861A (sv) * 1971-12-06 1973-09-01
US3985931A (en) * 1973-06-04 1976-10-12 Owens-Illinois, Inc. Method for the cooling of a tubular extrudate of expanded polystyrene
US3871802A (en) * 1973-06-04 1975-03-18 Owens Illinois Inc Dressing ring for tubular expanded polystyrene cooling mandrel
DD105759A1 (sv) * 1973-07-18 1974-05-12
US3864444A (en) * 1973-09-04 1975-02-04 Mobil Oil Corp Method of producing a foamed polystyrene sheet having a density gradient decreasing from the external surfaces inwardly
US4009976A (en) * 1973-09-04 1977-03-01 Mobil Oil Corporation Apparatus for producing a foamed polystyrene sheet having a density gradient decreasing from the external surfaces inwardly
DE2602024A1 (de) * 1976-01-21 1977-07-28 Berstorff Gmbh Masch Hermann Verfahren und einrichtung zum herstellen von kaschierten thermoplastischen schaumstoffbahnen
US4049768A (en) * 1976-04-09 1977-09-20 Mobil Oil Corporation Method for extending thermoplastic foams having smooth external skins
DE2704231C2 (de) * 1977-02-02 1983-05-19 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Vorrichtung zur Herstellung von Folien aus expandierbarem Kunststoff

Also Published As

Publication number Publication date
EP0008689B1 (en) 1983-03-30
DK345979A (da) 1980-02-23
DK151373C (da) 1988-05-16
EP0008689A1 (en) 1980-03-19
AT375871B (de) 1984-09-25
FI792596A (fi) 1980-02-23
MX150996A (es) 1984-09-06
SE7808847L (sv) 1980-02-23
SE429941B (sv) 1983-10-10
US4261939A (en) 1981-04-14
ES483526A1 (es) 1980-05-16
DK151373B (da) 1987-11-30
ATA548879A (de) 1984-02-15
NO154119B (no) 1986-04-14
JPS5528899A (en) 1980-02-29
NO792663L (no) 1980-02-25
BR7905388A (pt) 1980-05-27
NO154119C (no) 1986-07-23
FI70540B (fi) 1986-06-06
ES484680A1 (es) 1980-06-16
JPS6349608B2 (sv) 1988-10-05
AU528880B2 (en) 1983-05-19
PT70082A (en) 1979-09-01
DE2965110D1 (en) 1983-05-05
CA1143117A (en) 1983-03-22
ZA794184B (en) 1980-08-27
AR218156A1 (es) 1980-05-15
AU5006779A (en) 1980-02-28

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MM Patent lapsed
MM Patent lapsed

Owner name: TETRA PAK INTERNATIONAL AB