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FR2404506A1 - PROCESS FOR CONTINUOUSLY FORMING HOLLOW OBJECTS IN A THERMOPLASTIC MATERIAL - Google Patents

PROCESS FOR CONTINUOUSLY FORMING HOLLOW OBJECTS IN A THERMOPLASTIC MATERIAL

Info

Publication number
FR2404506A1
FR2404506A1 FR7827770A FR7827770A FR2404506A1 FR 2404506 A1 FR2404506 A1 FR 2404506A1 FR 7827770 A FR7827770 A FR 7827770A FR 7827770 A FR7827770 A FR 7827770A FR 2404506 A1 FR2404506 A1 FR 2404506A1
Authority
FR
France
Prior art keywords
thermoplastic material
continuously forming
forming hollow
hollow objects
plunger
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
FR7827770A
Other languages
French (fr)
Other versions
FR2404506B1 (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.)
Wavin BV
Original Assignee
Wavin BV
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 Wavin BV filed Critical Wavin BV
Publication of FR2404506A1 publication Critical patent/FR2404506A1/en
Application granted granted Critical
Publication of FR2404506B1 publication Critical patent/FR2404506B1/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
    • B29C51/426—Producing specific thermal regimes during thermoforming to obtain particular properties
    • 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
    • B29C51/002—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 characterised by the choice of material
    • 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
    • B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
    • 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
    • B29C51/10—Forming by pressure difference, e.g. vacuum

Landscapes

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

Abstract

a. Procédé pour former en continu des objets creux en une matière thermoplastique. b. On déforme d'abord une feuille de polypropylène chauffée à une température inférieure de 20 à 40 degrés C à son point de fusion cristallin au moyen d'un plongeur, puis on la gonfle de façon à la plaquer contre la paroi intérieure d'un moule. Cette feuille a un indice de fluidité à l'état fondu compris entre 1,8 et 2,4 et le plongeur, qui est en une matière plastique, n'est pas préchauffé. c. L'invention s'applique à la fabrication de toutes sortes d'objets moulés en matiere plastique, notamment, en une matière thermoplastique.at. A process for continuously forming hollow objects from a thermoplastic material. b. A polypropylene sheet heated to a temperature 20 to 40 degrees C below its crystalline melting point is first deformed by means of a plunger, then inflated so that it is pressed against the interior wall of a mold. . This sheet has a melt flow index of between 1.8 and 2.4 and the plunger, which is a plastic material, is not preheated. vs. The invention applies to the manufacture of all kinds of objects molded from plastic material, in particular from a thermoplastic material.

FR7827770A 1977-09-28 1978-09-28 PROCESS FOR CONTINUOUSLY FORMING HOLLOW OBJECTS IN A THERMOPLASTIC MATERIAL Granted FR2404506A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7710568A NL7710568A (en) 1977-09-28 1977-09-28 PROCESS FOR THE CONTINUOUS FORMING OF HOLLOW OBJECTS FROM THERMOPLASTIC MATERIAL.

Publications (2)

Publication Number Publication Date
FR2404506A1 true FR2404506A1 (en) 1979-04-27
FR2404506B1 FR2404506B1 (en) 1981-06-26

Family

ID=19829244

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7827770A Granted FR2404506A1 (en) 1977-09-28 1978-09-28 PROCESS FOR CONTINUOUSLY FORMING HOLLOW OBJECTS IN A THERMOPLASTIC MATERIAL

Country Status (6)

Country Link
DE (1) DE2842074A1 (en)
ES (1) ES473770A1 (en)
FR (1) FR2404506A1 (en)
GB (1) GB2004808B (en)
NL (1) NL7710568A (en)
SE (1) SE7810115L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2105244B (en) * 1981-08-28 1985-07-17 Metal Box Co Ltd Forming apparatus
GB2107636B (en) * 1981-09-04 1985-12-24 Cosden Technology Method and apparatus for producing biaxially oriented hollow articles
US4388356A (en) * 1981-11-16 1983-06-14 The Goodyear Tire & Rubber Company Heat setting a thermoformed PET article utilizing a male plug as a constraint
ES2055733T3 (en) * 1987-06-23 1994-09-01 Shionogi & Co METHOD AND APPARATUS FOR THE FORMATION OF PTP BAGS.
AU633576B2 (en) * 1989-07-18 1993-02-04 Idemitsu Petrochemical Co., Ltd. Process of molding thermoplastic sheet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1412049A (en) * 1963-10-01 1965-09-24 Poly Pak Corp Of America Method and apparatus for making hollow articles of oriented plastics material
FR1595389A (en) * 1967-12-26 1970-06-08
DE1912955A1 (en) * 1968-03-18 1970-09-03 Hoechst Ag Molding process for the production of items from polypropylene
US3546746A (en) * 1966-12-13 1970-12-15 Shell Oil Co Apparatus for forming hollow articles of work-strengthenable plastic materials
FR2148447A1 (en) * 1971-08-11 1973-03-23 Shell Int Research

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1412049A (en) * 1963-10-01 1965-09-24 Poly Pak Corp Of America Method and apparatus for making hollow articles of oriented plastics material
US3546746A (en) * 1966-12-13 1970-12-15 Shell Oil Co Apparatus for forming hollow articles of work-strengthenable plastic materials
FR1595389A (en) * 1967-12-26 1970-06-08
DE1912955A1 (en) * 1968-03-18 1970-09-03 Hoechst Ag Molding process for the production of items from polypropylene
FR2148447A1 (en) * 1971-08-11 1973-03-23 Shell Int Research

Also Published As

Publication number Publication date
DE2842074A1 (en) 1979-04-05
NL7710568A (en) 1979-03-30
GB2004808A (en) 1979-04-11
GB2004808B (en) 1982-05-26
FR2404506B1 (en) 1981-06-26
ES473770A1 (en) 1979-04-01
SE7810115L (en) 1979-03-29

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Legal Events

Date Code Title Description
ST Notification of lapse