FR2195514A1 - Closed loop thermoforming system - combining extrusion calendering, thermoforming and regranulation operations as an integrated sequence - Google Patents

Closed loop thermoforming system - combining extrusion calendering, thermoforming and regranulation operations as an integrated sequence

Info

Publication number
FR2195514A1
FR2195514A1 FR7229980A FR7229980A FR2195514A1 FR 2195514 A1 FR2195514 A1 FR 2195514A1 FR 7229980 A FR7229980 A FR 7229980A FR 7229980 A FR7229980 A FR 7229980A FR 2195514 A1 FR2195514 A1 FR 2195514A1
Authority
FR
France
Prior art keywords
thermoforming
drum
forming
regranulation
moulding
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
FR7229980A
Other languages
French (fr)
Other versions
FR2195514B1 (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.)
BOUCHOT CHARLES
Original Assignee
BOUCHOT CHARLES
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 BOUCHOT CHARLES filed Critical BOUCHOT CHARLES
Priority to FR7229980A priority Critical patent/FR2195514A1/en
Publication of FR2195514A1 publication Critical patent/FR2195514A1/en
Application granted granted Critical
Publication of FR2195514B1 publication Critical patent/FR2195514B1/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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/004—Arrangements for converting the motion of a material which is continuously fed to a working station in a stepwise motion
    • 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
    • B29C51/18—Thermoforming apparatus
    • B29C51/20—Thermoforming apparatus having movable moulds or mould parts
    • B29C51/22—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
    • B29C51/225—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis mounted on a vacuum drum
    • 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
    • B29C51/30—Moulds
    • B29C51/32—Moulds having cutting means
    • 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
    • B29C51/30—Moulds
    • B29C51/34—Moulds for undercut articles
    • B29C51/343—Moulds for undercut articles having recessed undersurfaces
    • 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

Abstract

A thermoplastic material is extruded as sheet via a calender nip and then guide rolls partly round a rotating drum before being redirected to a regranulation device discharging back to the hopper of the extruder. The drum carries female moulds aligned with external moulding heads which follow part of the motion of the rotating drum surface. Each head incorporates a forming plug which can reciprocate radially w.r.t. the drum axis. The plug ram picks up an annular clamp to allow the final stages of deformation to be achieved by pneumatic pressure. The mouldings are severed from the matrix sheet and ejected after the latter has left the drum surface. Pref. moulds are mounted >=2 abreast. An ancillary plunger in the base of each mould may assist in moulding ejection and opt. to form a recessed base in the moulding. Split moulds with pivotted elements may be used for forming narrow mouth containers. The motions of the drum and the forming plungers etc. are pref. powered and synchronised by hydraulic circuitry. Use of the residual melt heat input for the calendering and forming operations is more efficient than chilling, stocking and reheating the blank sheet, and, coupled with closed loop use of the matrix material, minimises degradation and wastage of materials.
FR7229980A 1972-08-10 1972-08-10 Closed loop thermoforming system - combining extrusion calendering, thermoforming and regranulation operations as an integrated sequence Granted FR2195514A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7229980A FR2195514A1 (en) 1972-08-10 1972-08-10 Closed loop thermoforming system - combining extrusion calendering, thermoforming and regranulation operations as an integrated sequence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7229980A FR2195514A1 (en) 1972-08-10 1972-08-10 Closed loop thermoforming system - combining extrusion calendering, thermoforming and regranulation operations as an integrated sequence

Publications (2)

Publication Number Publication Date
FR2195514A1 true FR2195514A1 (en) 1974-03-08
FR2195514B1 FR2195514B1 (en) 1976-10-29

Family

ID=9103448

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7229980A Granted FR2195514A1 (en) 1972-08-10 1972-08-10 Closed loop thermoforming system - combining extrusion calendering, thermoforming and regranulation operations as an integrated sequence

Country Status (1)

Country Link
FR (1) FR2195514A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004092A2 (en) * 1978-03-13 1979-09-19 Maryland Cup Corporation A method and means for continuously thermal forming oriented thermoplastic molded articles
EP0045972A2 (en) * 1980-08-13 1982-02-17 Maryland Cup Corporation Continuous rotary thermo-forming systems and apparatus of the pressure assist, plug assist and match mold type
EP0529367A1 (en) * 1991-08-27 1993-03-03 Ball Corporation Cut-in-place, melt-phase forming method and apparatus
WO1996000144A1 (en) * 1994-06-27 1996-01-04 Rexham, Inc. Thermoforming of high-gloss components
EP0974263A3 (en) * 1998-07-15 2000-04-26 Gebr. Pöppelmann, Kunststoffwerk-Werkzeugbau Plastic pot, deep drawing mould and process for producing the same
ITPG20100029A1 (en) * 2010-05-05 2011-11-06 Mario Battistelli ROTARY MACHINE FOR THE PRODUCTION OF THERMOFORMED OBJECTS, WITH LOW CONSUMPTION OF RAW MATERIALS, HIGH FLEXIBILITY ON THE PRODUCT FROM THERMOFORMING AND OPTIMIZATION OF THE DEAD PRODUCTION TIMES.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1245758A (en) * 1959-10-02 1960-11-10 Marc Gateau & Cie Manufacturing process, continuously, of synthetic resin pots and machine for implementing this process
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1245758A (en) * 1959-10-02 1960-11-10 Marc Gateau & Cie Manufacturing process, continuously, of synthetic resin pots and machine for implementing this process
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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004092A2 (en) * 1978-03-13 1979-09-19 Maryland Cup Corporation A method and means for continuously thermal forming oriented thermoplastic molded articles
EP0004092A3 (en) * 1978-03-13 1980-02-06 Maryland Cup Corporation Methods and means for continuously biaxially orienting thermoplastic materials and for manufacturing such materials and forming articles therefrom in a continuous process
EP0045972A2 (en) * 1980-08-13 1982-02-17 Maryland Cup Corporation Continuous rotary thermo-forming systems and apparatus of the pressure assist, plug assist and match mold type
EP0045972A3 (en) * 1980-08-13 1983-02-09 Maryland Cup Corporation Continuous rotary thermo-forming systems and apparatus of the pressure assist, plug assist and match mold type
EP0529367A1 (en) * 1991-08-27 1993-03-03 Ball Corporation Cut-in-place, melt-phase forming method and apparatus
WO1996000144A1 (en) * 1994-06-27 1996-01-04 Rexham, Inc. Thermoforming of high-gloss components
EP0974263A3 (en) * 1998-07-15 2000-04-26 Gebr. Pöppelmann, Kunststoffwerk-Werkzeugbau Plastic pot, deep drawing mould and process for producing the same
ITPG20100029A1 (en) * 2010-05-05 2011-11-06 Mario Battistelli ROTARY MACHINE FOR THE PRODUCTION OF THERMOFORMED OBJECTS, WITH LOW CONSUMPTION OF RAW MATERIALS, HIGH FLEXIBILITY ON THE PRODUCT FROM THERMOFORMING AND OPTIMIZATION OF THE DEAD PRODUCTION TIMES.

Also Published As

Publication number Publication date
FR2195514B1 (en) 1976-10-29

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Legal Events

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