EP0000801B1 - Verfahren zur Herstellung orientierter Hohlkörper - Google Patents

Verfahren zur Herstellung orientierter Hohlkörper Download PDF

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Publication number
EP0000801B1
EP0000801B1 EP19780200127 EP78200127A EP0000801B1 EP 0000801 B1 EP0000801 B1 EP 0000801B1 EP 19780200127 EP19780200127 EP 19780200127 EP 78200127 A EP78200127 A EP 78200127A EP 0000801 B1 EP0000801 B1 EP 0000801B1
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EP
European Patent Office
Prior art keywords
preforms
final
false
neck
process according
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
EP19780200127
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English (en)
French (fr)
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EP0000801A1 (de
Inventor
Guy Hubert
Edmond Michel
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Solvay SA
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Solvay SA
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Filing date
Publication date
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Publication of EP0000801A1 publication Critical patent/EP0000801A1/de
Application granted granted Critical
Publication of EP0000801B1 publication Critical patent/EP0000801B1/de
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    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0731—Preforms or parisons characterised by their configuration having variable diameter at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0732—Preforms or parisons characterised by their configuration having variable diameter at flange portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0733—Preforms or parisons characterised by their configuration having variable diameter at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
    • B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
    • B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/079—Auxiliary parts or inserts
    • B29C2949/0793—Transport 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/081—Specified dimensions, e.g. values or ranges
    • B29C2949/0811—Wall thickness
    • B29C2949/0816—Wall thickness of the flange
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/081—Specified dimensions, e.g. values or ranges
    • B29C2949/0829—Height, length
    • B29C2949/0834—Height, length of the flange
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps

Definitions

  • the present invention relates to a process for the production of oriented hollow bodies of thermoplastic material, such as bottles and similar articles, the neck of which has an orifice ring at its upper part allowing the application of a tight closure.
  • preforms of generally cylindrical shape, generally comprising a closed bottom and a molded neck in its final form. These preforms are then thermally conditioned so as to bring them to an optimum temperature for orientation by stretching. Then, these conditioned preforms are blown in order to give them the shape of the desired hollow bodies.
  • the diameter of the preforms and their length are chosen so that they are strongly stretched, preferably biaxially, during the final blowing.
  • the hollow bodies produced according to this technique can be provided with a perfectly sealed closure
  • their necks are usually molded, not during the final blowing, but during the blowing of the preforms.
  • the neck can be molded while ensuring perfect fidelity of the details and precise calibration of the orifice.
  • the final molding of the neck during the blowing of the preforms has serious drawbacks.
  • the neck area does not have symmetry of revolution, for example because it is threaded, special precautions must be taken to transfer the preforms without damaging the neck and to position them correctly in the final blow mold.
  • the thermoplastic material is misused at the neck since the wall necessarily has a thickness almost equal to that of the starting tubular parison and has unattractive properties since it is not oriented.
  • the present invention therefore relates to a process for the production of oriented hollow bodies of thermoplastic material, the neck of which has an orifice ring at its upper part and a molded lower part, in which preforms are blow molded from a hot tubular parison of thermoplastic material, the preforms are thermally conditioned at a temperature capable of inducing the orientation of the thermoplastic material during its stretching, and the preforms are blown into final blow molds and in which the ring is molded. orifice in its final form during the blow molding of the preforms and the lower part of the neck is molded during the final blowing.
  • the shape and dimensions of the orifice ring are not critical and are chosen, in general, according to the closure which it is desired to use on the hollow bodies produced.
  • the ring can have a rounded profile at its upper part and at right angles to its lower part when it is desired to close the hollow bodies with metal capsules.
  • the ring may have a circular or rectangular section for example.
  • the height of the ring is between 1 and 10 mm and its thickness between 0.5 and 5 mm.
  • the orifice ring can be molded with very great precision since the thermoplastic material can be brought to its ideal temperature to ensure the fidelity of the details and the precision of the calibration during the production of the preforms. Furthermore, the transfer of the preforms no longer poses a problem and their positioning in the final blow mold is greatly simplified since the orifice ring can have a symmetry of revolution without disadvantage. Therefore, the problem of angular positioning of the preforms is eliminated and it suffices to ensure the positioning in height which can be very simple since it can even be done by gravity. Finally, the method according to the present invention gives the possibility of stretching the lower part of the neck during its molding during the final blowing.
  • the preforms which can be used to carry out the process according to the invention can be in any form, provided that they comprise, in the upper part of their neck, in the region adjacent to the opening of the hollow body, a ring of molded orifice in its final form.
  • the preforms are provided with a false neck located above the orifice ring.
  • This false neck is eliminated either before or after the final blowing.
  • the thermoplastic material which constitutes it is recycled by grinding.
  • This false neck can be advantageously used for blowing the preform by means of a needle, or the transfer and positioning of the preforms.
  • the false neck can be closed or opened, according to the blowing technique used for molding the preforms, and it can be provided with ribs, grooves and lugs depending on the operation that one wishes to make of it.
  • the preforms used have a closed hemispherical bottom and a body of generally cylindrical shape.
  • the maximum diameter of the preforms is preferably between 20 and 80% of the maximum diameter of the oriented hollow bodies produced from these preforms.
  • Their height can be equal to that of the desired hollow bodies but, in general, it is preferred that the height of the preforms is between 20 and 80% of the height of the oriented hollow bodies produced from these preforms.
  • the preforms are molded from a hot tubular parison of thermoplastic material, the production of which presents no particular difficulty and can be ensured by a conventional extruder.
  • the technique used for the blow molding of the preforms can be arbitrary as long as it allows the production of an orifice ring molded with precision in its final form.
  • the false neck which is preferably housed on the preforms, is kept during the final blowing operation and extends, at least in its upper part, from the final blowing mold .
  • the false neck can, in this case, be removed later by a bar turning operation.
  • bar turning devices such as those described in Belgian patents 673913 of December 17, 1975, 774525 of October 27, 1971 and 809448 of July 7.14, filed in the name of the Applicant.
  • the positioning can advantageously be ensured by the false neck itself.
  • the molding of the preforms is used to condition the preforms produced by cooling them or, at least, to initiate the thermal conditioning.
  • This result can in particular be achieved by equipping the preform molds with suitable means such as refrigerant pipes.
  • the thermal conditioning can be carried out or continued by the usual means, and for example in one or more thermostatted enclosures in which the preforms remain after they are removed from the mold and before their introduction into the blow molds.
  • Thermal conditioning can consist of cooling the preforms so as to bring them in the desired temperature range, or to cool them more strongly and then reheat them to bring them into this same range.
  • the temperature is obviously chosen according to the nature of the thermoplastic material.
  • the preforms can be brought to a uniform temperature over their entire useful height or over their entire thickness. It is also possible to carry out thermal programming along preforms. Thus, it may be advantageous to bring the region of the preforms located just below the orifice ring to a temperature slightly higher than the rest of the preforms so as to promote the stretching and, consequently, the thinning of this region. during the final blowing.
  • the preforms are introduced into the final blow molds where they are given the final shape of the desired oriented hollow bodies and where one proceeds in particular to the molding of the lower part of the neck, below the orifice ring .
  • the final blowing is carried out by means of a blowing nozzle which is inserted into the preforms and which is designed so as to participate in the axial stretching of the preforms before or during their blowing. It is particularly advantageous to use, for this purpose, the blowing technique which is described in Belgian patent 838 910 of 25.2.1976 in the name of the Applicant.
  • the seal between the blowing nozzles and the preforms during the final blowing can be ensured by pressing the nozzle directly on the orifice ring.
  • the nozzle can also rest on the false neck of the preforms and more particularly on its lower part.
  • the blowing nozzles can, in these two cases, be used simultaneously to ensure the internal calibration of the necks.
  • the shape imparted to the lower part of the neck of the final blowing may be any.
  • the molding may in particular consist of a thread.
  • the method according to the invention can be used to produce oriented hollow bodies from any thermoplastic material which can be molecularly oriented by drawing.
  • thermoplastic material which can be molecularly oriented by drawing.
  • examples of the latter include resins with a predominant vinyl chloride content, polyolefins, acrylic copolymers with a high content of acrylic nitrile, thermoplastic polyesters such as polyethylene glycol terephthalate, and polycarbonates.
  • the process according to the invention can be easily carried out by means of a simple apparatus comprising molds for molding the preforms, the imprint of which ensures the molding of the orifice ring in its final form, and final blow molds. whose imprint ensures the precise housing of the orifice ring and the molding of the lower part of the neck.
  • the apparatus comprises a machine for blowing preforms which is fed by a continuous tubular parison of thermoplastic material and whose molds aligned end to end in a contiguous manner on a first rotary support have suitable imprints allowing the production of a false neck, a thermal conditioning device bringing the preforms to the orientation temperature, a final blowing machine comprising a plurality of molds mounted on a second rotary support and also having suitable imprints and a transfer device, consisting of a endless chain equipped with supports, ensuring the transfer of the preforms from the preform blowing machine to the final blowing machine by passing them through the thermal conditioning device.
  • the supports equipping the preform transfer chain are preferably adapted to grip these preforms at their false neck during transfers. It is however possible to provide supports adapted to support the preforms below their orifice ring as described in the aforementioned Belgian patent 837 324.
  • the final blowing machine can be similar to that described in Belgian patent 837 324. It is preferable that the blowing nozzles fitted to this machine are of the same type as that described in Belgian patent 838 910 already mentioned above.
  • This final blowing machine can very advantageously be equipped with extendable radial arms provided at their end with a clamp adapted so as to grip the false neck of the preforms, the upper part of which at least projects beyond the final blowing mold.
  • the radial arm can be used to positively remove the hollow body from the mold, move it away from the final blow machine and transfer it, for example, to a conveyor which evacuates the hollow bodies to a free-cutting installation where their fake bottleneck is eliminated.
  • the preform mold 1 which can be mounted with other identical on a rotary blow molding device not shown, has an imprint 2 whose relief allows the blow molding from a portion of hot tubular parison of thermoplastic material, of a preform comprising a closed hemispherical bottom 3, a generally cylindrical body 4, an orifice ring 5 molded in its final shape and a closed false neck 6 surmounting this ring.
  • the preform is molded by blowing using a retractable hollow needle 7 which pierces the parison in the region intended to form the false neck and which is connected, in a manner known per se, to a source of non-pressurized fluid represented.
  • the walls of the mold 1 are equipped with refrigeration channels, not shown, the function of which is to cool the molded preform in order to allow it to be removed from the mold and possibly to ensure total or partial thermal conditioning of the preform.
  • the length of the molded preform is substantially less than the height of the hollow body oriented to produce and its diameter is significantly less than the maximum diameter of the same hollow body.
  • the preform After molding and refrigeration, the preform is extracted from the mold 1 and is transferred by passing through a conditioning device. thermally, to the final blow mold. During this transfer, the upper part of its false neck 6 is cut in order to open the upper part of the preform.
  • the means used for the transfer grip the preform at its false neck 6 and cooperate with the groove which is formed therein so that the upper part of the false neck 6 is released in order to allow the cutting of this part.
  • the thermally conditioned preform is introduced into a final blow mold 8 which is shown in FIG. 2 and is mounted on a rotary support, not shown.
  • the mold 8 comprises an imprint 9, the relief of which has a recess 10 allowing the precise housing of the orifice ring 5 molded in its final shape on the preform.
  • the introduction of the preform into the mold 8 is carried out in such a way that, when the mold is closed, the orifice ring 5 comes to be housed precisely in the recess. This introduction can in particular be ensured, for example by means of the device for transferring the preforms, via the false neck 6.
  • the imprint 9 of the mold 8 reproduces in hollow the shape of the desired oriented hollow body 11 and in particular comprises a relief 12 allowing information during the final blowing of the lower part of the neck 13 of the hollow body.
  • the open false neck 6 of the preform overflows from the mold 8 during the final blowing operation. It is used to ensure airtightness during blowing. To this end, the blowing nozzle 14 has a shoulder 17 which comes to bear on the internal lower part of the false neck 6 and firmly applies the latter against the edge of the opening 18 of the mold 8.
  • the blowing nozzle 14 comprises a calibration sleeve 19 which precisely controls the opening diameter of the neck of the hollow body 11, and ensures the sealing and the retention of the preform during the final blowing.
  • the rotary final blowing device is setting of the preforms and being constituted by provided with a series of extendable radial arms 20 which each collaborate with a final blow mold 8.
  • the ends of these arms 20 are equipped with removable clamps 21 adapted so as to come to close on the false necks 6 of the preforms, the upper part of which extends beyond the final blow molds 8.
  • the molded oriented hollow body 11 is held by a clamp 21 which thus ensures that it is removed from the mold cavity 9.
  • the arm 20 can be extended to radially take out the molded oriented hollow body 11 from the final blowing machine and bring it onto an evacuation conveyor 22 where it is abandoned by opening the clamp 21.
  • the control of the radial arms can be ensured by mechanical means such as cams or by electrical, pneumatic or hydraulic means.
  • the radial extension movement of the arms 20 can be amplified by known devices such as rack and pinion devices.
  • the radial arms 20 fitted with clamps 22 can also be exploited by a reverse movement to ensure the introduction of the conditioned preforms into the final blow molds 8.
  • thermoplastic material it is easy to produce, with a remarkably high yield, oriented hollow bodies of thermoplastic material to which it is easy to apply closures, such as capsules, very tightly and which, therefore, particularly suitable for the packaging of carbonated drinks such as beer and lemonades.

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

Claims (10)

1. Verfahren zur Herstellung orientierter Hohlkörper aus thermoplastischem Material, deren Hals am oberen Teil eine ringförmige Austrittsöffnung (5) und ein unteres Gußteil (13) aufweist, wobei man Vorformen (4) aus einer rohrförmigen warmen Thermoplast-Schmelze formt, die Vorformen bei einer die Orientierung des thermoplastischen Materials beim Ziehen induzierenden Temperatur wärmekonditioniert und sie in endgültigen Blasformen (8) aufbläst, dadurch gekennzeichnet, daß man Vorformen (4), die die Ringöffnung (5) in der endgültigen Form und über dieser einen falschen Halsansatz (6) aufweisen, blasformt und das untere Halsteil (13) des Hohlkörpers beim endgültigen Blasen formt.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das untere Halsteil beim endgültigen Blasen gezogen wird.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß das untere Halsteil beim Wärmekonditionieren auf eine höhere Temperatur als der Rest der Vorformen erwärmt wird.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß man zum endgültigen Blasen eine Blasform (14), die zwecks Dichtigkeit direkt auf der Ringöffnung (5) aufliegt, verwendet.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß man wenigstens den oberen Teil des falschen Halsansatzes (6) der endgültigen Blasform (8) wegnimmt.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß man die Vorformen (4) und die Hohlkörper (11) zu deren Transfer in Höhe ihres falschen Halsansatzes (6) ergreift.
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß man die Vorformen (4) und die Hohlkörper (11) mit Hilfe ihres falschen Halsansatzes (6) positioniert.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Vorformen (4) mit Hilfe einer rückziebaren Hohlnadel (7), die in Höhe des falschen Halsansatzes (6) arbeitet, blasgeformt werden.
9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Vorformen (4) einen halbkugeligen Untergrund (3) und einen allgemein zylindrischen Körper aufweisen.
10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß man zum endgültigen Blasen eine Düse (14), die zwecks Dichtigkeit auf dem falschen Halsansatz (6) aufliegt, verwendet.
EP19780200127 1977-08-08 1978-08-03 Verfahren zur Herstellung orientierter Hohlkörper Expired EP0000801B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7724579A FR2399977A1 (fr) 1977-08-08 1977-08-08 Procede pour la production de corps creux orientes
FR7724579 1977-08-08

Publications (2)

Publication Number Publication Date
EP0000801A1 EP0000801A1 (de) 1979-02-21
EP0000801B1 true EP0000801B1 (de) 1981-01-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19780200127 Expired EP0000801B1 (de) 1977-08-08 1978-08-03 Verfahren zur Herstellung orientierter Hohlkörper

Country Status (7)

Country Link
US (1) US4317793A (de)
EP (1) EP0000801B1 (de)
AT (1) AT381671B (de)
BR (1) BR7805053A (de)
DE (1) DE2860374D1 (de)
FR (1) FR2399977A1 (de)
IT (1) IT1097570B (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566871A (en) * 1981-01-16 1986-01-28 Krupp Corpoplast Maschinenbau Gmbh Apparatus for making a parison for blowmolding of a hollow article
DE3101284C2 (de) * 1981-01-16 1985-08-01 Krupp Corpoplast Maschinenbau GmbH, 2000 Hamburg Verfahren zum Formen des offenen Endabschnittes eines einen geschlossenen Boden aufweisenden Vorformlings für das Blasformen eines Hohlkörpers aus thermoplastischem Kunststoff, insbesondere einer Flasche, und Vorrichtung zum Durchführen des Verfahrens
US4515836A (en) * 1982-07-16 1985-05-07 Nordson Corporation Process for coating substrates with aqueous polymer dispersions
US4573429A (en) * 1983-06-03 1986-03-04 Nordson Corporation Process for coating substrates with aqueous polymer dispersions
US4709803A (en) * 1986-02-12 1987-12-01 B & G Machinery Company Preform transfer mechanism
US4767311A (en) * 1986-06-02 1988-08-30 Cincinnati Milacron Inc. Blow molding apparatus with resilient skirted spindle nose
EP0527969A1 (de) * 1990-05-11 1993-02-24 SAAB, Mark, A. Hochfeste, dünnwandige, einstückige katheter
CA2159169C (en) * 1994-09-27 2006-05-16 Tony Salemi Modified plastic bottle injection blow-molding apparatus and process
IT1311703B1 (it) * 1999-07-23 2002-03-19 Sipa Spa Impianto ad alta efficienza di soffiaggio di preforme
US7214341B2 (en) * 2004-01-30 2007-05-08 Owens-Illinois Prescription Products Inc. Method of injection molding a preform including a radially extending element
GB0804266D0 (en) * 2008-03-07 2008-04-16 Univ Belfast Thermoplastic preform method and apparatus
DE102008021526A1 (de) * 2008-04-30 2009-11-05 Krones Ag Vorrichtung zum Expandieren von Kunststoffbehältnissen
ES2390753T3 (es) * 2009-09-10 2012-11-16 Gea Procomac S.P.A. Molde para modelar un contenedor a obtener a partir de una preforma de material plástico y su correspondiente método

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1451995A (fr) * 1964-12-30 1966-02-25 Solvay Décolleteuse de bouteilles en matière plastique et similaires
US3585683A (en) * 1968-03-11 1971-06-22 Phillips Petroleum Co Blow molding apparatus
US3651186A (en) * 1968-03-29 1972-03-21 Hercules Inc Method for forming blow molded articles of oriented thermoplastic material
DE1779306A1 (de) * 1968-07-27 1971-09-16 Bosch Gmbh Robert Vorrichtung zum Blasformen von Hohlkoerpern aus Vorformlingen
DE1805091B2 (de) * 1968-10-25 1978-03-09 Guenther 7000 Stuttgart Schmid Verfahren ium Herstellen eines Hohlkörpers aus einem thermoplastischen Kunststoff
DE1947525A1 (de) * 1969-09-19 1971-04-01 Bosch Gmbh Robert Vorrichtung zum Blasformen von Hohlkoerpern
DE2134003B2 (de) * 1970-07-10 1977-05-05 Showa Denko KX., Tokio; Nissei Plastics Industrial Co., Ltd., Nagano; (Japan) Vorrichtung zum herstellen eines hohlkoerpers aus einem thermoplastischen werkstoff durch spritzblasformen
NO134099C (de) * 1970-11-10 1976-08-18 Solvay
FR2121541B1 (de) * 1971-01-04 1975-08-29 Owens Illinois Inc
US3873660A (en) * 1971-06-01 1975-03-25 Monsanto Co Method for forming multiaxially oriented containers
US3769394A (en) * 1971-09-15 1973-10-30 American Can Co Method for finishing blow molded plastic containers in the mold
US3801690A (en) * 1972-02-16 1974-04-02 Phillips Petroleum Co Closing mold halves on stretched portion of individual parison preform at orientation temperature
CA1006672A (en) * 1972-07-03 1977-03-15 Illinois Tool Works Inc. Plastic preform
US3833332A (en) * 1972-11-17 1974-09-03 Owens Illinois Inc Apparatus for forming containers of thermoplastic material
FR2213148B1 (de) * 1973-01-05 1976-04-30 Solvay
US3949033A (en) * 1973-11-02 1976-04-06 Owens-Illinois, Inc. Method of making a blown plastic container having a multi-axially stretch oriented concave bottom
FR2261117B1 (de) * 1974-02-14 1976-11-26 Solvay
FR2263874B1 (de) * 1974-03-15 1976-12-17 Solvay
US4080146A (en) * 1974-11-22 1978-03-21 The Continental Group, Inc. Segmented blow molds
FR2293297A1 (fr) * 1974-12-04 1976-07-02 Carnaud Total Interplastic Procede de fabrication de corps creux en matiere plastique a partir de preformes, corps creux obtenus et preformes pour leur obtention
US3973941A (en) * 1974-12-23 1976-08-10 The Nestle Company Inc. Method of producing a blown bottle having means determinative of relationship between the bottle body and the annular position of associated means mounted on the finish
CH595970A5 (de) * 1975-01-07 1978-02-28 Solvay
LU71598A1 (de) 1975-01-07 1976-11-11
FR2302184A1 (fr) 1975-02-26 1976-09-24 Solvay Proce
FR2345280A1 (fr) * 1976-03-22 1977-10-21 Solvay Appareillage pour la production en continu de corps creux orientes en matiere thermoplastique

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IT1097570B (it) 1985-08-31
DE2860374D1 (en) 1981-03-19
IT7826381A0 (it) 1978-08-01
AT381671B (de) 1986-11-10
FR2399977A1 (fr) 1979-03-09
EP0000801A1 (de) 1979-02-21
ATA571678A (de) 1986-04-15
US4317793A (en) 1982-03-02
BR7805053A (pt) 1979-03-13

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