DE1162062B - Process for producing tub-shaped bodies, such as lamp housings, from thermoplastic material - Google Patents

Process for producing tub-shaped bodies, such as lamp housings, from thermoplastic material

Info

Publication number
DE1162062B
DE1162062B DEG24976A DEG0024976A DE1162062B DE 1162062 B DE1162062 B DE 1162062B DE G24976 A DEG24976 A DE G24976A DE G0024976 A DEG0024976 A DE G0024976A DE 1162062 B DE1162062 B DE 1162062B
Authority
DE
Germany
Prior art keywords
blank
tub
wall
producing
thermoplastic material
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.)
Pending
Application number
DEG24976A
Other languages
German (de)
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.)
Gerhardi and Cie
Original Assignee
Gerhardi and Cie
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 Gerhardi and Cie filed Critical Gerhardi and Cie
Priority to DEG24976A priority Critical patent/DE1162062B/en
Priority to CH6738558A priority patent/CH367977A/en
Priority to BE574332A priority patent/BE574332A/en
Priority to DK7959A priority patent/DK104804C/en
Publication of DE1162062B publication Critical patent/DE1162062B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/22Corrugating
    • B29C53/24Corrugating of plates or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/042Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping 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
    • B29C51/002Shaping 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping 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
    • B29C51/02Combined thermoforming and manufacture of the preform
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Description

Verfahren zum Herstellen wannenförmiger Körper, wie Leuchtengehäuse, aus thermoplastischem Kunststoff Zum Herstellen von Behältern, Flaschen und Gefäßen aus thermoplastischem Kunststoff dient als Ausgangsmaterial ein Rohling, der beim Umformen in die endgültige Gestalt durch dieses Verformen unterschiedliche Wandstärken erhält, wodurch beispielsweise die Leuchtwannen das Licht der Leuchtröhre nicht mehr gleichmäßig hindurchlassen und die Wannenwandung besonders am oberen Rand, an dem sie durch das Befestigen am stärksten beansprucht wird, geringere Festigkeit aufweist als an den übrigen Wandteilen.Process for producing tub-shaped bodies, such as lamp housings, Made of thermoplastic material For the production of containers, bottles and jars made of thermoplastic material is used as the starting material, a blank that is used in the Forming into the final shape by this deformation of different wall thicknesses receives, whereby, for example, the light tubs do not receive the light from the fluorescent tube let through more evenly and the tub wall especially at the upper edge, where it is most stressed by fastening, lower strength has than on the other wall parts.

Zum Herstellen von flaschenartigen Hohlkörpern ist es bekannt, zunächst einen flaschenähnlichen Rohling mit unterschiedlichen Wandstärken herzu stellen, der dann anschließend zu einem Hohlkörper mit geringerer und gleichmäßiger Wand stärke umgeformt wird. Hierbei ist es notwendig, sowohl zum Herstellen des Rohlings als auch zum Herstellen des Behälters ein besonderes Werkzeug bereitzuhalten. For the production of bottle-like hollow bodies, it is known initially to produce a bottle-like blank with different wall thicknesses, which then subsequently becomes a hollow body with a smaller and more uniform wall starch is transformed. Here it is necessary both for the production of the blank and to have a special tool ready for making the container.

Auch ist schon vorgeschlagen worden, zum Herstellen von Behältern aus zieh- und spritzfähigem Kunststoff einen am Rand eingespannten Rohling zu verwenden, der an den der Verformung unterliegenden Partien entsprechend dem in bestimmten Bereichen unterschiedlichen Verformungsgrad unterschiedliche Wandstärken aufweist und bei dem das nachfolgende Fertigerzeugnis gleichmäßige bzw. an allen Stellen die gewünschte Wandstärke erreicht. It has also been proposed to manufacture containers to use a blank clamped at the edge made of drawable and injectable plastic, that of the parts subject to deformation corresponding to that in certain Areas with different degrees of deformation have different wall thicknesses and in which the subsequent finished product is uniform or at all points the desired wall thickness is achieved.

Hierbei wird, da das Verfahren besonders für Behälter einheitlicher Größe gedacht ist, stets von dem gleichen Rohling bestimmter Größe ausgegangen, bei dem die eingespannten Randteile nicht mehr verformbar sind.Here, since the process is more uniform, especially for containers Size is always assumed from the same blank of a certain size, in which the clamped edge parts are no longer deformable.

Die Erfindung sieht ein Verfahren zum Herstellen wannenförmiger Körper, wie Leuchtengehäuse, aus thermoplastischem Kunststoff vor, bei dem ein plattenförmiger Rohling mit unterschiedlichen Wandstärken hergestellt und nachfolgend in die gewünschte Gestalt gebracht wird, und das Neue besteht darin, daß der Rohling bzw. der Rohlingstrang durch Strangpressen, Walzen, Gießen oder Schleudern mit gegenüber den übrigen Wandteilen verstärkten Rändern versehen wird, die durch das nachfolgende an sich bekannte Pressen oder Ziehen auf gleiche oder annähernd gleiche Wandstärke wie die übrigen Wandteile gebracht werden. Der Vorteil dieses Verfahrens besteht darin, daß zum Herstellen des Rohlings keine besonderen Werkzeuge auf Lager gehalten werden müssen, und da die Größe des Rohlings unabhängig von der endgültigen Abmessung der aus ihm herzustellenden Leuchtwanne ist, kann er, falls er durch Gießen hergestellt ist, als Ganzes für eine Langleuchte und, in Abschnitte unterteilt, für kleinere Leuchtwannen verwendet werden. Falls er durch Strangpressen oder Walzen hergestellt wird, können von einem solchen Strang Rohlingsabschnitte von beliebiger Länge, d. h. entsprechend der Größe der herzustellenden Leuchtwannen, abgetrennt werden. Es braucht daher der Leuchtwannenhersteller nicht mehr mehrere Rohlingsgrößen auf Lager zu halten. Der verdickte Rand gewährleistet, daß an dieser hochbeanspruchten Stelle stets die ausreichende Festigkeit erhalten bleibt. The invention provides a method for producing tub-shaped bodies, like lamp housing, made of thermoplastic material in front of which a plate-shaped Blank manufactured with different wall thicknesses and then into the desired Shape is brought, and what is new is that the blank or the blank strand by extrusion, rolling, casting or centrifugation with the other wall parts reinforced edges is provided by the subsequent known per se pressing or pulling to the same or approximately the same wall thickness as the other wall parts to be brought. The advantage of this method is that it can be used to manufacture of the blank no special tools have to be kept in stock, and there the size of the blank regardless of the final dimension of the one to be made from it Light tub is, can it, if it is made by casting, as a whole for one Long lamp and, divided into sections, can be used for smaller light tubs. If it is produced by extrusion or rolling, one of them can be used Strand of blank sections of any length, d. H. according to the size of the to be produced light wells, are separated. It therefore needs the light fixture manufacturer no longer have several blank sizes in stock. The thickened edge ensures that at this highly stressed point always get sufficient strength remain.

Als Ausgangsstoffe für den Rohling können die bekannten durch Wärme und Druck verformbaren Kunststoffe, die genügend lichtdurchlässig sind, zur Verwendung kommen, wie Polymethacrylsäureester, Polyesterharze, Methacrylharze und Polypropylen. As starting materials for the blank, the known through heat and pressure deformable plastics that are sufficiently translucent to use such as polymethacrylic acid esters, polyester resins, methacrylic resins, and polypropylene.

Zur Festigkeitserhöhung sieht das Verfahren vor, daß dem Rohling Verstärkungseinlagen aller Art, wie Glas, Metall oder Textilfasern, gegebenenfalls zu Matten oder Vliesen verwebt, beigegeben werden, wie dies bei anderen Verfahren zum Herstellen von Kunststoffkörpern üblich ist.To increase strength, the method provides that the blank reinforcement inserts of all kinds, such as glass, metal or textile fibers, optionally into mats or fleeces woven, are added, as is the case with other processes for the production of plastic bodies is common.

Die Zeichnung veranschaulicht die zur Durchführung des Verfahrens notwendigen Vorrichtungen schematisch, und zwar zeigt Ab b. 1 eine Gießform bei Verwendung von gießfähigen Kunststoffen, Ab b. 2 einen Schnitt durch eine Preßform, A b b. 3 eine Schleudergießform, A b b. 4 Weiterverarbeitung eines Rohlings durch Druckverformung, A b b. 5 eine Walzvorrichtung, A b b. 6 den Querschnitt eines Rohlings zum Herstellen eines Gehäuses nach A b b. 7 und A b b. 7 ein Schaubild eines fertigen Gehäuses. The drawing illustrates how to carry out the process necessary devices schematically, namely shows Ab b. 1 a mold Use of castable plastics, Ab b. 2 a section through a compression mold, A b b. 3 a centrifugal casting mold, A b b. 4 further processing of a blank Compression deformation, A b b. 5 a rolling device, A b b. 6 shows the cross section of a blank for producing a housing according to A b b. 7 and A b b. 7 is a diagram of a finished Housing.

In A b b. 1 ist eine zweiteilige Gießform gezeigt für Rohlinge mit Randverstärkungen 7 und dünnerem Mittelteil 8. In A b b. 1 shows a two-part casting mold for blanks with Edge reinforcements 7 and thinner middle part 8.

In A b b. 2 sind Werkzeuge für eine Presse veranschaulicht. Hierbei hat die Unterform 11 ebene Seiten 12 für den Rohling, während die Oberform 13 eine Ausbuchtung 14 aufweist. In A b b. 2 tools for a press are illustrated. Here the lower mold 11 has level Pages 12 for the blank, while the Upper mold 13 has a bulge 14.

Nach A b b. 3 ist der Schleudergießzylinder 16 mit ausgebauchter Innenwandung 17 versehen, so daß ein spindelförmiger zylindrischer Rohling entsteht, der aufgeschnitten werden kann. According to A b b. 3 is the centrifugal casting cylinder 16 with a bulged Inner wall 17 provided so that a spindle-shaped cylindrical blank is formed, that can be cut open.

In A b b. 4 ist die Weiterverarbeitung eines Rohlings gezeigt. Auf eine Druckform, die aus zwei Teilen 18 und 19 besteht, ist ein Formdeckel 20 gelegt mit Druckmittelzuiluß 21. Der Rohling 6 wird an den Schmalseiten 4 mittels des Formdeckels festgeklemmt, und nach Zuführen des Druckmittels bei 21 wird der Rohling zu einem wannen- oder topfförmigen Körper 22 umgeformt, der bei 23 sogar einen Vorsprung aufweisen kann. Die mittige Verdickung 6 bewirkt dabei, daß beim Verformen überall eine gleichmäßige Wandstärke aufrechterhalten wird. In A b b. 4 shows the further processing of a blank. on a printing form, which consists of two parts 18 and 19, a form cover 20 is placed with Druckmittelzuiluß 21. The blank 6 is on the narrow sides 4 by means of the mold cover clamped, and after supplying the pressure medium at 21, the blank becomes a tub-shaped or pot-shaped body 22 reshaped, which at 23 even has a projection may have. The central thickening 6 has the effect that when deforming everywhere a uniform wall thickness is maintained.

A b b. 5 zeigt eine Walzvorrichtung mit Walzenpaar 24, deren Mäntel entsprechend den zu erzeugenden Rohlingsquerschnitten ausgebildet sind. A b b. 5 shows a rolling device with a pair of rollers 24, their jackets are designed according to the blank cross-sections to be produced.

Nach den A b b. 6 und 7 ist ein Rohling gezeigt, wie er beispielsweise aus der Gießform nach A b b. 1 erzeugt und durch Pressen in die Gestalt eines wannenförmigen, durchsichtigen Gehäuses verarbeitet wird, das als Abdeckung für einen Leuchtkörper dienen kann. According to A b b. 6 and 7 a blank is shown as it is for example from the mold according to A b b. 1 generated and pressed into the shape of a tub-shaped, transparent housing is processed as a cover for a light body can serve.

Die notwendige Gestaltung des Rohlingquerschnittes kann in jedem Falle je nach der gewünschten Gestalt des endgültigen Körpers ermittelt werden. Es können zusätzliche Verdickungen auf dem Rohling vorgesehen werden bzw. Verdünnungen an den Stellen, wo überhaupt keine oder nur eine geringe Materialverschiebung durch das Verformen eintritt. In allen Fällen kann, falls gewünscht, eine Verstärkungseinlage mit beigelegt werden, die im Falle des Strangpressens die Düse fortlaufend mit durchläuft oder in die Gieß- oder Schleudergießform eingelegt wird. Bei den Verstärkungen kann es sich um Glas-, Textil- oder Metallfasern oder -drähte handeln. The necessary design of the blank cross-section can be in each Trap can be determined depending on the desired shape of the final body. Additional thickening or thinning can be provided on the blank in the places where there is little or no material displacement at all deformation occurs. In all cases, a reinforcement insert can be used if desired be enclosed, which in the case of extrusion continuously runs through the nozzle or is placed in the casting or centrifugal casting mold. The reinforcements can it is glass, textile or metal fibers or wires.

Ebenso können Gewebe oder Vliese verwendet werden. Als geeignete Harze kommen alle durch Hitze und Wärme verformbaren Kunststoffe in Betracht, insbesondere Polymethacrylsäureester, Polyesterharze, Methacrylharze und Polypropylen.Fabrics or fleeces can also be used. As suitable resins All plastics that can be deformed by heat and heat come into consideration, in particular Polymethacrylic acid esters, polyester resins, methacrylic resins and polypropylene.

Claims (3)

Patentansprüche: 1. Verfahren zum Herstellen wannenförmiger Körper, wie Leuchtengehäuse, aus thermoplastischem Kunststoff, bei dem ein plattenförmiger Rohling mit unterschiedlichen Wandstärken hergestellt und nachfolgend in die gewünschte Gestalt gebracht wird, d a d u r c h g e -kennzeichnet, daß der Rohling bzw. der Rohlingstrang durch Strangpressen, Walzen, Gießen oder Schleudern mit gegenüber den übrigen Wandteilen verstärkten Rändern versehen wird, die durch das nachfolgende an sich bekannte Pressen oder Ziehen auf gleiche oder annähernd gleiche Wandstärke wie die übrigen Wandteile gebracht werden. Claims: 1. A method for producing tub-shaped bodies, like lamp housing, made of thermoplastic material with a plate-shaped Blank manufactured with different wall thicknesses and then into the desired Is brought shape, d a d u r c h g e - indicates that the blank or the Blank strand by extrusion, rolling, casting or centrifuging with opposite the other wall parts reinforced edges is provided by the following known pressing or pulling to the same or approximately the same wall thickness how to bring the rest of the wall. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß durch Wärme und Druck verformbare Kunststoffe zur Verwendung kommen, die den Klassen der Polymethacrylsäureester, Polyesterharze, Methacrylharze und Polypropylen angehören. 2. The method according to claim 1, characterized in that by heat and pressure-formable plastics are used, which belong to the classes of polymethacrylic acid esters, Polyester resins, methacrylic resins and polypropylene belong to. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß dem Rohling Verstärkungseinlagen aller Art, wie Glas-, Metall-oder Textilfasern, gegebenenfalls zu Matten oder Vliesen verwebt, beigegeben werden. 3. The method according to claims 1 and 2, characterized in that that the blank reinforcement inserts of all kinds, such as glass, metal or textile fibers, if necessary woven into mats or fleeces, added. In Betracht gezogene Druckschriften: Schweizerische Patentschrift Nr. 281 216; britische Patentschriften Nr. 569 340, 751 068. Publications considered: Swiss patent specification No. 281 216; British Patent Nos. 569 340, 751 068. In Betracht gezogene ältere Patente: Deutsches Patent Nr. 1 108 895. Older patents considered: German Patent No. 1 108 895.
DEG24976A 1958-07-26 1958-07-26 Process for producing tub-shaped bodies, such as lamp housings, from thermoplastic material Pending DE1162062B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEG24976A DE1162062B (en) 1958-07-26 1958-07-26 Process for producing tub-shaped bodies, such as lamp housings, from thermoplastic material
CH6738558A CH367977A (en) 1958-07-26 1958-12-16 Method and device for producing housing-like bodies from plastic
BE574332A BE574332A (en) 1958-07-26 1958-12-30 Method and device for the manufacture of housing type body in synthetic material.
DK7959A DK104804C (en) 1958-07-26 1959-01-08 Process for the production of a thermoplastic plastic blank intended for the production of hollow bodies, in particular lamp cases.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG24976A DE1162062B (en) 1958-07-26 1958-07-26 Process for producing tub-shaped bodies, such as lamp housings, from thermoplastic material

Publications (1)

Publication Number Publication Date
DE1162062B true DE1162062B (en) 1964-01-30

Family

ID=7122529

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG24976A Pending DE1162062B (en) 1958-07-26 1958-07-26 Process for producing tub-shaped bodies, such as lamp housings, from thermoplastic material

Country Status (4)

Country Link
BE (1) BE574332A (en)
CH (1) CH367977A (en)
DE (1) DE1162062B (en)
DK (1) DK104804C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9216080U1 (en) * 1992-11-26 1993-08-26 Reiss International GmbH, 88069 Tettnang Deep-drawn part
EP1849576A1 (en) * 2006-04-26 2007-10-31 Protec Maschinen- und Kunststofftechnik GmbH Moulding machine for shaping a flat plastic material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021103400A1 (en) 2021-02-12 2022-08-18 M + C Schiffer Gmbh Method of manufacturing a fibrous material container and fibrous material container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB569340A (en) * 1941-12-29 1945-05-18 John Stagg Byers Improvements in or relating to the shaping of thermoplastic sheets
CH281216A (en) * 1950-04-15 1952-02-29 Novo Plast Gmbh Process for the production of hollow bodies from thermoplastic material and device for carrying out this process.
GB751068A (en) * 1954-08-03 1956-06-27 Kraft Foods Co Improvements in a process for blow molding thermoplastic hollow articles and in a device for heating the thermoplastic material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB569340A (en) * 1941-12-29 1945-05-18 John Stagg Byers Improvements in or relating to the shaping of thermoplastic sheets
CH281216A (en) * 1950-04-15 1952-02-29 Novo Plast Gmbh Process for the production of hollow bodies from thermoplastic material and device for carrying out this process.
GB751068A (en) * 1954-08-03 1956-06-27 Kraft Foods Co Improvements in a process for blow molding thermoplastic hollow articles and in a device for heating the thermoplastic material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9216080U1 (en) * 1992-11-26 1993-08-26 Reiss International GmbH, 88069 Tettnang Deep-drawn part
EP1849576A1 (en) * 2006-04-26 2007-10-31 Protec Maschinen- und Kunststofftechnik GmbH Moulding machine for shaping a flat plastic material

Also Published As

Publication number Publication date
CH367977A (en) 1963-03-15
DK104804C (en) 1966-07-04
BE574332A (en) 1959-04-16

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