DE889976C - Device for blowing seamless, bottle-shaped hollow bodies made of plastic - Google Patents

Device for blowing seamless, bottle-shaped hollow bodies made of plastic

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Publication number
DE889976C
DE889976C DEL6057A DEL0006057A DE889976C DE 889976 C DE889976 C DE 889976C DE L6057 A DEL6057 A DE L6057A DE L0006057 A DEL0006057 A DE L0006057A DE 889976 C DE889976 C DE 889976C
Authority
DE
Germany
Prior art keywords
housing
plastic
piston
valve
valve stem
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.)
Expired
Application number
DEL6057A
Other languages
German (de)
Inventor
Friedrich Dr-Ing Lorenz
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DEL1806A external-priority patent/DE878105C/en
Priority to DEL5985A priority Critical patent/DE892238C/en
Application filed by Individual filed Critical Individual
Priority to DEL6057A priority patent/DE889976C/en
Priority to GB10068/52A priority patent/GB703970A/en
Priority claimed from GB10068/52A external-priority patent/GB703970A/en
Priority to US286728A priority patent/US2706308A/en
Application granted granted Critical
Publication of DE889976C publication Critical patent/DE889976C/en
Expired 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/32Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • 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
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32Component parts, details or accessories; Auxiliary operations
    • B29C43/36Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3631Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices moving in a frame for pressing and stretching; material being subjected to compressing stretching
    • 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
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/48Moulds
    • B29C2049/4856Mounting, exchanging or centering moulds or parts thereof
    • B29C2049/4858Exchanging mould parts, e.g. for changing the mould size or geometry for making different products in the same mould
    • 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
    • B29C2949/00Indexing scheme relating to blow-moulding
    • B29C2949/30Preforms or parisons made of several components
    • B29C2949/3032Preforms or parisons made of several components having components being injected
    • 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
    • B29C2949/00Indexing scheme relating to blow-moulding
    • B29C2949/30Preforms or parisons made of several components
    • B29C2949/3041Preforms or parisons made of several components having components being extruded
    • 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
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32Component parts, details or accessories; Auxiliary operations
    • B29C43/36Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • 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
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/0685Compression blow-moulding
    • 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
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08Biaxial stretching during blow-moulding
    • B29C49/10Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12Stretching rods
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/712Containers; Packaging elements or accessories, Packages
    • B29L2031/7158Bottles

Landscapes

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

Description

Vorrichtung zum Blasen von nahtlosen flas chenförmigen Hohlkörpern aus Kunststoff In dem Patent 878 105 wird eine Vorrichtung zum Herstellen von nahtlosen Hohlkörpern aus Kunststoff beschrieben, bei der Kunststoff aus einer von einem Gehäuse 4 (Abb. 3 bis 7 dieses Patents) und einem gegenüber diesem Gehäuse beweglichen Ventilstempel 5 gebildeten ringförmigen Öffnung ausgepreßt und zu einem Hohlkörper aufgeblasen wird und die dadurch gekennzeichnet ist, daß sich Gehäuse 4 und Ventilstempel 5 in entgegengesletzter Richtung ,erstrecken. Das Gehäuse kann eine röhrenartige Form 14 (Abb. 8 und 9 dieses Patents) haben.Device for blowing seamless bottle-shaped hollow bodies made of plastic In the patent 878 105 an apparatus for producing seamless Hollow bodies made of plastic described in the plastic from a housing 4 (Fig. 3 to 7 of this patent) and a valve stem which can be moved with respect to this housing 5 formed annular opening pressed out and inflated to a hollow body and which is characterized in that the housing 4 and valve stem 5 in the opposite direction, extend. The housing can be tubular in shape 14 (Figs. 8 and 9 of this patent).

Der Kunststoff wird aus dem Gehäuse 14 entweder durch einen im Innern des Gehäuses laufenden Kolbein 16 oder durch eine am freien Ende des Gehäuser angebrachte Schnecken- oder Kolbenpresse ausgepreßt.The plastic is removed from the housing 14 either through an inside the housing running piston leg 16 or by one attached to the free end of the housing Extruded screw or piston press.

Bei diesem Verfahren ergibt sich aus der Tatsache, daß der herzustellende Hohlkörper 11 (Abb. 6) während des Herstellungsprozesses an beiden Enden I2, I3 (Abb. 6) festgehalten ist, unter anderem der Vorteil, daß der Hohlkörper 1 1 während des Herstellungsganges nicht nach der Seite »ausweichen« und außerdem, daß man ihn während des Blasens zusätzlich in Längsrichtung recken kann. In this method, it follows from the fact that the to be produced Hollow body 11 (Fig. 6) during the manufacturing process at both ends I2, I3 (Fig. 6) is recorded, among other things, the advantage that the hollow body 1 1 during of the production process not "dodging" to the side and, moreover, that one should can also stretch lengthways while blowing.

Das Verfahren ist ganz besonders dann praktisch, wenn es sich darum handelt, schlanke und gleichzeitig dünnwandige Flaschen mit gleichbleibender Wanddicke herzustellen. The procedure is particularly useful when it comes to that deals, slim and at the same time thin-walled bottles with constant wall thickness to manufacture.

Bevor der Kunststoff aus dem Gehäuse 14 (Abb. 8) ausgepreßt und zu einem Hohlkörper aufgeblasen werden kann, muß er in das Gehäuse Before the plastic is pressed out of the housing 14 (Fig. 8) and closed a hollow body can be inflated, it must be in the housing

Claims (1)

eingefüllt werden. Im Hauptpatent ist erwähnt, daß man dazu beispielsweise das Gehäuse 14 außerhalb der eigentlichen Blaseeinrichtung mit Kunststoff füllt und anschließend Patronenartig in diese einsetzt.be filled. In the main patent it is mentioned that one can do this, for example the housing 14 fills with plastic outside the actual bladder device and then insert it into it like a cartridge. Gemäß dem ersten Zusatzpatent kann ein technischer Fortschritt erzielt werden, wenn das Gehäus!e durch eine im Ventilstempel 5 (Abb. I3 dieses Patents) angebrachte Bohrung mit Kunststoff gefüllt wird, wobei diese Bohrung am gehäuseseitigen Ende des Ventilstempels 5 einen ventilartigen Verschluß 2I trägt. Ein solches Vorgehen erlaubt es, das Gehäuse 14 dauernd in der Blasevorrichtung zu belassen, was in manchen Fällen zweckmäßiger ist, als wenn man es patronenartig auswechselt. According to the first additional patent, technical progress can be achieved if the housing! e by a valve in the valve stem 5 (Fig. I3 of this patent) Attached hole is filled with plastic, this hole on the housing side The end of the valve stem 5 carries a valve-like closure 2I. Such an approach allows housing 14 to be permanently left in the blower, which in some Cases is more useful than if you replace it like a cartridge. Es hat sich nun gezeigt, daß ein weiterer technischer Fortschritt erzielt werden kann, wenn die Füllung des Gehäuses 14 mit Kunststoff statt durch das Innere des Ventilstempels 5 durch eine ventilartig verschließbare Öffnung 25 (Abb. I4) erfolgt, die an dem in dem Gehäuse 14 laufenden Kolben I6 angebracht ist. Die Förderung des Kunststoffes in das Gehäuse 14 kann, wie bereits in dem Hauptpatent erwähnt, mit Hilfe einer an dem freien Ende des Gehäuses 14 angebrachten Schnecken- oder Kolbenpresse erfolgen. Eine solche Anordnung bringt, ebenso wie das Füllen des Gehäuses 14 durch das Innere des Ventilstempels 5 (Abb. I3), den Vorteil, daß das Gehäuse 14 beim Füllen nicht aus der eigentlichen Blaseeinrichtung herausgenommen werden muß. Der Vorteil, den das Füllen des Gehäuses 14 durch eine im Kolben 16 angebrachte Öffnung 25 (Abb. 14) gegenüber dem Füllen des Gehäuses durch den Ventilstempel 5 bietet, liegt darin, daß für die konstruktive Ausbildung der Kanäle zur Zuführung des Kunststoffes mehr Raum zur Verfügung steht, weil der Ventilstempel 5 nicht dicker sein darf als der lichten Weite des Halses der herzustellenden Rasche 20 (Abb. II) entspricht, während der Kolben 16 und das Gehäuse 14 (Abb. 14) in ihren Abmessungen nicht durch den Hals, sondern durch den stets etwas dickeren Bauch der herzustellenden Flasche begrenzt sind. Zum anderen ist die Aufheizung der Zuführungskanäle für den Kunststoff auf die richtige Betriebstemperatur konstruktiv einfacher zu bewerkstelligen, wenn die Kanäle innerhalb des Kolblens 16 (Abb. I4) bzw. des Gehäuses 14 als wenn sie innerhalb des Ventilstempels 5 (Abb. I3) verlaufen. It has now been shown that a further technical advance can be achieved if the filling of the housing 14 with plastic instead of through the interior of the valve stem 5 through an opening 25 that can be closed in the manner of a valve (Fig. I4), which is attached to the piston I6 running in the housing 14. The promotion of the plastic in the housing 14 can, as in the main patent mentioned, with the help of a screw attached to the free end of the housing 14 or piston press. Such an arrangement brings, as well as the filling of the housing 14 through the interior of the valve stem 5 (Fig. I3), the advantage that the housing 14 is not removed from the actual bladder device during filling must become. The advantage of filling the housing 14 with one in the piston 16 attached opening 25 (Fig. 14) opposite the filling of the housing by the valve stem 5 offers is that for the structural design of the channels for supply of the plastic more space is available because the valve stem 5 is not thicker may be than the clear width of the neck of the Rasche 20 to be produced (Fig. II) corresponds, while the piston 16 and the housing 14 (Fig. 14) in their dimensions not through the neck, but through the always slightly thicker belly of the to be produced Bottle are limited. On the other hand, there is the heating of the supply channels for the Plastic is structurally easier to achieve at the correct operating temperature, if the channels within the piston 16 (Fig. I4) or the housing 14 than if they run inside the valve stem 5 (Fig. I3). Die Abb. 14 zeigt ein Ausführungsbeispiel der zu schützenden Vorrichtung. Fig. 14 shows an embodiment of the device to be protected. In dem röhrenförmigen Gehäuse 14 läuft der im vorliegenden Fall röhrenförmig ausgebildete Kolben 16, der durch den Ventilkegel 22 mit Ventilschaft 23 verschlossen werden kann. Der Kunststoff wird aus dem ringförmigen Hohlraum 24, der eine beliebige konstruktive Form, beispielsweise auch die einer Schneckenpresse haben kann, durch denRingkanal 25 in den Hohlraum der Vorform 18 eingepreßt. Ist die Vorform 18 mit Kunststoff gefüllt, so bewegt sich, wie in Abb. 15 gezeigt ist, der KolblenI6 nach abwärts, wodurch nunmehr auch das Gehäuse 14 mit Kunststoff gefüllt wird. Ist das Gehäuse 14 in dem beabsichtigten Maß mit Kunststoff gefüllt und hat der Kolben 16 seine untere Endlage erreicht, so wird der Ventilkegel 22 mit Hilfe des Ventilschaftes 23 auf den am oberen Rand ventilsitzartig ausgebildeten Kolben 16 gezonen. so daß das obere Ende des Kolbens 16 mct der Ventilkegel 22 eine zusammenhängende ebene Fläche bilden. Die Vorform 18 wird nunmehr, wie in Abb. 10 und I2 des Hauptpatents sowie in Abb. 16 der vorliegenden Patentschrift gezeigt, durch eine Hohlform 2 ersetzt. Dazu wird die Vorform 18, die geteilt ausgeführt ist, aufgeklappt und entfernt. Die in gleicher Weise geteilt ausgeführte eigentliche Flaschenform 2 (Abb. I6) wird dann in bekannter Weise um den Vorkörper 19 geschlossen. In the tubular housing 14, which in the present case runs tubular formed piston 16 which is closed by the valve cone 22 with valve stem 23 can be. The plastic is from the annular cavity 24, which is any constructive form, for example that of a screw press, by the annular channel 25 is pressed into the cavity of the preform 18. Is the preform 18 with Filled with plastic, the piston 16 moves as shown in Fig. 15 downwards, as a result of which the housing 14 is now also filled with plastic. Is this The housing 14 is filled with plastic to the intended extent and has the piston 16 reaches its lower end position, the valve cone 22 with the help of the valve stem 23 ge zones on the piston 16, which is designed like a valve seat at the upper edge. so that the upper end of the piston 16 mct the valve cone 22 a contiguous plane Form area. The preform 18 is now, as in Fig. 10 and I2 of the main patent as shown in Fig. 16 of the present patent specification, replaced by a hollow form 2. For this purpose, the preform 18, which is designed to be divided, is unfolded and removed. The actual bottle shape 2 (Fig. I6), which is divided in the same way, is then closed around the preform 19 in a known manner. Sodann werden Ventilstempel 5 und Gehäuse 14 einerseits sowie Hohlform 2 und Gleitstück 8 anderers,eits in entgegengesetzter Richtung bewegt, wobei durch den Kolben 16 und den Ventilkegel 22 Kunststoff aus dem Gehäuse 14 ausgepreßt und mit Luft, die beispielse durch den Kanal 1 5 zugeführt wird, zu dem Hohlkörper 20 aufgeblasen. Then valve plunger 5 and housing 14 on the one hand and a hollow shape 2 and slider 8, on the other hand, already moved in the opposite direction, with through the piston 16 and the valve cone 22 plastic pressed out of the housing 14 and with air, which is supplied, for example, through the channel 1 5, to the hollow body 20 inflated. Abb. 17 zeigt die Endlage der Herstellungseinrichtung kurz vor dem Herausnehmen der fertigen Flasche aus der Form 2. Der Ventilkegel 22, der röhrenförmige Kolben 16 und das Gehäuse I4 bilden zusammen mit der Bodenfläche der Form 2 den Flaschenboden. Es hat sich dabei gezeigt, daß es nicht notwendig ist, den Ventilstempel 5 bis in die unterste Endlage mit dem Gehäuse 14 mitzubewegen. Vielmehr kann man ihn, wie in Abb. I6 und 17 gezeigt, vorher anhalten, was den Vorteil hat, daß die Marke, die er sonst auf dem Flaschenboden bildet, verwischt wird. Fig. 17 shows the final position of the manufacturing facility shortly before the Removing the finished bottle from the mold 2. The valve cone 22, the tubular one Piston 16 and the housing I4 together with the bottom surface of the mold 2 form the Bottle bottom. It has been shown that it is not necessary to change the valve stem 5 to move with the housing 14 to the lowest end position. Rather, you can stop it beforehand, as shown in Figs. 16 and 17, which has the advantage that the The mark that it otherwise forms on the bottom of the bottle is blurred. PATENTANSPRUCH: Vorrichtung zum Herstellen von nahtlosen Hohlkörpern aus Kunststoffen, bei der der Kunststoff aus einer von leine Gehäuse und einem gegenüber diesem Gehäuse beweglichen Ventilstempel gebildeten ringförmigen Öffnung ausgepreßt und aufgeblasen wird, wobei sich Gehäuse und Ventilstempel in entgegengesetzter Richtung erstrecken, gernäß Patent 878 105, dadurch gekennzeichnet, daß an dem in dem Gehause (I4) laufenden Kolben (I6) eine ventilartig vers.chließbare Öffnung angebracht ist, durch die das Gehäuse (14) mit dem Kunststoff gefüllt wird. PATENT CLAIM: Device for producing seamless hollow bodies Made of plastics, in which the plastic consists of a housing and an opposite This housing movable valve plunger formed annular opening pressed out and is inflated, with the housing and valve stem facing each other Direction extend, according to Patent 878 105, characterized in that at the in the housing (I4) running piston (I6) has a valve-like closable opening is attached, through which the housing (14) is filled with the plastic.
DEL6057A 1950-04-22 1950-10-20 Device for blowing seamless, bottle-shaped hollow bodies made of plastic Expired DE889976C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEL5985A DE892238C (en) 1950-04-22 1950-10-08 Device for blowing seamless, bottle-shaped hollow bodies made of plastic
DEL6057A DE889976C (en) 1950-04-22 1950-10-20 Device for blowing seamless, bottle-shaped hollow bodies made of plastic
GB10068/52A GB703970A (en) 1950-04-22 1952-04-22 Improvements in and apparatus for forming hollow articles of thermoplastic material
US286728A US2706308A (en) 1950-04-22 1952-05-08 Process of forming hollow articles of thermoplastic material and apparatus for carrying out the process

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEL1806A DE878105C (en) 1950-04-22 1950-04-22 Method and device for blowing seamless, bottle-shaped hollow bodies made of plastic
DEL6057A DE889976C (en) 1950-04-22 1950-10-20 Device for blowing seamless, bottle-shaped hollow bodies made of plastic
GB10068/52A GB703970A (en) 1950-04-22 1952-04-22 Improvements in and apparatus for forming hollow articles of thermoplastic material

Publications (1)

Publication Number Publication Date
DE889976C true DE889976C (en) 1955-08-01

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ID=27211350

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL6057A Expired DE889976C (en) 1950-04-22 1950-10-20 Device for blowing seamless, bottle-shaped hollow bodies made of plastic

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DE (1) DE889976C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288898A (en) * 1963-11-13 1966-11-29 Dow Chemical Co Process of blow molding hollow articles
DE3734444A1 (en) * 1987-02-12 1988-09-08 Ossberger Turbinen Device for producing a plastic hollow article which has a displaceable mandrel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288898A (en) * 1963-11-13 1966-11-29 Dow Chemical Co Process of blow molding hollow articles
DE3734444A1 (en) * 1987-02-12 1988-09-08 Ossberger Turbinen Device for producing a plastic hollow article which has a displaceable mandrel

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