FR2204496A1 - In line thermoforming thin walled plastics articles - from band with cooled surface skin but hot core, avoids marks on finished product - Google Patents

In line thermoforming thin walled plastics articles - from band with cooled surface skin but hot core, avoids marks on finished product

Info

Publication number
FR2204496A1
FR2204496A1 FR7337882A FR7337882A FR2204496A1 FR 2204496 A1 FR2204496 A1 FR 2204496A1 FR 7337882 A FR7337882 A FR 7337882A FR 7337882 A FR7337882 A FR 7337882A FR 2204496 A1 FR2204496 A1 FR 2204496A1
Authority
FR
France
Prior art keywords
band
plastics
marks
avoids
finished product
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.)
Granted
Application number
FR7337882A
Other languages
French (fr)
Other versions
FR2204496B1 (en
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.)
Bellaplast GmbH
Original Assignee
Bellaplast GmbH
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 Bellaplast GmbH filed Critical Bellaplast GmbH
Publication of FR2204496A1 publication Critical patent/FR2204496A1/en
Application granted granted Critical
Publication of FR2204496B1 publication Critical patent/FR2204496B1/fr
Granted 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
    • B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential
    • B29C51/423—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential through the thickness of the preform
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/46—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0094—Geometrical properties
    • B29K2995/0096—Dimensional stability

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

A method of making thin-walled, thermoformed plastics objects, consists of compacting and heating the material in an extruder until flowable, extruding it through a slit-shaped die to form a band, then thermoforming the articles from the band; as the hot, plastics band leaves the die or nozzle, its surfaces are sufficiently cooled to stabilise them so that they are load bearing but still deformable, while the internal material remains substantially at extrusion temp. and still in the plastics state; in the thermoforming stage a cooled shaping tool dee-draws the band, the uncooled internal material being held between the partly cooled and hardened surfaces in the manner of a plastics filling between two shells.
FR7337882A 1972-10-25 1973-10-24 In line thermoforming thin walled plastics articles - from band with cooled surface skin but hot core, avoids marks on finished product Granted FR2204496A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722252219 DE2252219B2 (en) 1972-10-25 1972-10-25 METHOD AND DEVICE FOR PRODUCING THIN-WALLED MOLDINGS FROM THERMOPLASTIC PLASTIC

Publications (2)

Publication Number Publication Date
FR2204496A1 true FR2204496A1 (en) 1974-05-24
FR2204496B1 FR2204496B1 (en) 1976-06-18

Family

ID=5859972

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7337882A Granted FR2204496A1 (en) 1972-10-25 1973-10-24 In line thermoforming thin walled plastics articles - from band with cooled surface skin but hot core, avoids marks on finished product

Country Status (9)

Country Link
AT (1) AT352387B (en)
BR (1) BR7308230D0 (en)
CH (1) CH579448A5 (en)
DE (1) DE2252219B2 (en)
ES (2) ES419942A1 (en)
FI (1) FI57363C (en)
FR (1) FR2204496A1 (en)
SE (1) SE399203B (en)
ZA (1) ZA738137B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398592A1 (en) * 1977-07-25 1979-02-23 Bellaplast Gmbh METHOD OF MANUFACTURING SHAPED WALL-WALL ARTICLES AT LOW THICKNESS IN THERMOPLASTIC CRYSTALLINE MATERIAL
FR2477948A1 (en) * 1980-03-14 1981-09-18 Multivac Haggenmueller Kg METHOD FOR FORMING CONTAINERS AND SHEET LEAVES AND APPARATUS FOR IMPLEMENTING THE METHOD
FR2543878A1 (en) * 1983-04-02 1984-10-12 Illig Maschinenbau Adolf HEATING APPARATUS FOR HEATING SHEETS OF SYNTHETIC THERMOPLASTIC MATERIAL AND METHOD FOR CONTROLLING PREHEATING

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3023086A1 (en) * 1980-06-20 1982-01-07 Bellaplast Maschinenbau GmbH, 6501 Heidesheim METHOD AND DEVICE FOR PRODUCING THIN-WALLED MOLDINGS FROM THERMOPLASTIC PLASTIC
DE3530309A1 (en) * 1985-08-24 1987-02-26 Held Kurt METHOD AND DEVICE FOR CONTINUOUSLY PRODUCING THERMOPLASTIC PLASTIC RAILS
DE3803083C1 (en) * 1988-02-03 1989-04-20 Er-We-Pa Maschinenfabrik Und Eisengiesserei Gmbh, 4006 Erkrath, De Process and apparatus for transporting pieces of film web
DE3810812A1 (en) * 1988-03-30 1989-10-12 Continental Ag METHOD FOR THE PRODUCTION OF CONVEYOR BELTS AND SYSTEM FOR ITS IMPLEMENTATION
DE3830889A1 (en) * 1988-09-10 1990-03-22 Bellaplast Gmbh INLINE THERMOFORMING MACHINE
DE3907036C1 (en) * 1989-03-04 1990-09-13 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De Cooling device for thermoplastic films

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE649837A (en) * 1963-12-24
CH350794A (en) * 1957-07-09 1960-12-15 Hydro Chemie Aktiengesellschaf Method for heating a plate made of thermoplastic material by means of heat rays and device for carrying out the method
FR1388505A (en) * 1964-03-27 1965-02-05 Marc Gateau & Cie Process and improved automatic line for the continuous molding of plastic pots and hollow bodies, as well as the products obtained by the implementation of this process
GB1015282A (en) * 1961-09-04 1965-12-31 Chausson Usines Sa Improvements in or relating to the production of flexible sheets
FR1461761A (en) * 1965-06-17 1966-02-25 Calmec Mfg Ltd Method and device for manufacturing hollow bodies, with deep drawing, of plastic
CH455253A (en) * 1965-04-29 1968-06-28 Sudo Hiromi Process for pressing films made from thermoplastic resins
FR1565802A (en) * 1967-04-18 1969-05-02
DE1679998A1 (en) * 1967-09-05 1971-04-22 Dornbusch Maschf Device for heating continuous webs of material, in particular webs of thermoplastic materials
DE1957708A1 (en) * 1969-11-17 1971-05-19 Bellaplast Maschinen Verkaufs Temperature control device for extruded thermoplastic films
FR2087706A5 (en) * 1970-05-28 1971-12-31 Samafor Extrusion die for laminate prodn - with at least two slots of variable section
FR2106403A1 (en) * 1970-09-09 1972-05-05 Leesona Corp
US3676537A (en) * 1965-11-18 1972-07-11 Thomas W Winstead Continuous method of extruding and thero-forming skin-covered foamed thermoplastic articles

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH350794A (en) * 1957-07-09 1960-12-15 Hydro Chemie Aktiengesellschaf Method for heating a plate made of thermoplastic material by means of heat rays and device for carrying out the method
GB1015282A (en) * 1961-09-04 1965-12-31 Chausson Usines Sa Improvements in or relating to the production of flexible sheets
BE649837A (en) * 1963-12-24
FR1388505A (en) * 1964-03-27 1965-02-05 Marc Gateau & Cie Process and improved automatic line for the continuous molding of plastic pots and hollow bodies, as well as the products obtained by the implementation of this process
CH455253A (en) * 1965-04-29 1968-06-28 Sudo Hiromi Process for pressing films made from thermoplastic resins
FR1461761A (en) * 1965-06-17 1966-02-25 Calmec Mfg Ltd Method and device for manufacturing hollow bodies, with deep drawing, of plastic
US3676537A (en) * 1965-11-18 1972-07-11 Thomas W Winstead Continuous method of extruding and thero-forming skin-covered foamed thermoplastic articles
FR1565802A (en) * 1967-04-18 1969-05-02
DE1679998A1 (en) * 1967-09-05 1971-04-22 Dornbusch Maschf Device for heating continuous webs of material, in particular webs of thermoplastic materials
DE1957708A1 (en) * 1969-11-17 1971-05-19 Bellaplast Maschinen Verkaufs Temperature control device for extruded thermoplastic films
FR2087706A5 (en) * 1970-05-28 1971-12-31 Samafor Extrusion die for laminate prodn - with at least two slots of variable section
FR2106403A1 (en) * 1970-09-09 1972-05-05 Leesona Corp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398592A1 (en) * 1977-07-25 1979-02-23 Bellaplast Gmbh METHOD OF MANUFACTURING SHAPED WALL-WALL ARTICLES AT LOW THICKNESS IN THERMOPLASTIC CRYSTALLINE MATERIAL
FR2398593A1 (en) * 1977-07-25 1979-02-23 Bellaplast Gmbh PROCESS FOR MANUFACTURING THIN-WALL ARTICLES FROM A THERMOPLASTIC CRYSTALLINE MATERIAL
FR2477948A1 (en) * 1980-03-14 1981-09-18 Multivac Haggenmueller Kg METHOD FOR FORMING CONTAINERS AND SHEET LEAVES AND APPARATUS FOR IMPLEMENTING THE METHOD
FR2543878A1 (en) * 1983-04-02 1984-10-12 Illig Maschinenbau Adolf HEATING APPARATUS FOR HEATING SHEETS OF SYNTHETIC THERMOPLASTIC MATERIAL AND METHOD FOR CONTROLLING PREHEATING

Also Published As

Publication number Publication date
ES444010A1 (en) 1977-04-16
ATA900073A (en) 1979-02-15
ES419942A1 (en) 1976-08-01
AT352387B (en) 1979-09-10
DE2252219A1 (en) 1974-05-02
ZA738137B (en) 1974-08-28
BR7308230D0 (en) 1974-07-25
FR2204496B1 (en) 1976-06-18
SE399203B (en) 1978-02-06
FI57363C (en) 1980-08-11
FI57363B (en) 1980-04-30
CH579448A5 (en) 1976-09-15
DE2252219B2 (en) 1978-02-16

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