DE20314295U1 - Plastic injection molded part, and container, produced by blow molding the plastic molded part - Google Patents

Plastic injection molded part, and container, produced by blow molding the plastic molded part Download PDF

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Publication number
DE20314295U1
DE20314295U1 DE2003214295 DE20314295U DE20314295U1 DE 20314295 U1 DE20314295 U1 DE 20314295U1 DE 2003214295 DE2003214295 DE 2003214295 DE 20314295 U DE20314295 U DE 20314295U DE 20314295 U1 DE20314295 U1 DE 20314295U1
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Prior art keywords
container
plastic injection
engagement
molded part
base body
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Expired - Lifetime
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DE2003214295
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German (de)
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Georg Menshen GmbH and Co KG
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Georg Menshen GmbH and Co KG
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Priority to DE2003214295 priority Critical patent/DE20314295U1/en
Publication of DE20314295U1 publication Critical patent/DE20314295U1/en
Priority to PCT/EP2004/008917 priority patent/WO2005028186A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2618—Moulds having screw-threaded mould walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • 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
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • 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
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • 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
    • B29C2949/074—Preforms or parisons characterised by their configuration having ribs or protrusions
    • 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
    • B29C2949/074—Preforms or parisons characterised by their configuration having ribs or protrusions
    • B29C2949/0744—Preforms or parisons characterised by their configuration having ribs or protrusions 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
    • B29C2949/076—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
    • B29C2949/0772—Closure retaining means
    • B29C2949/0773—Threads
    • B29C2949/0775—Inner threads
    • 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
    • B29C2949/0792—Closure
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/258—Tubular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

Kunststoff-Spritzgiessteil, welches eine nachträgliche Formung durch Blasformen zu einem Behältnis, wie ein Behälter, eine Flasche oder dgl. ermöglicht, mit einem im Wesentlichen rohrförmigen, einerends offenen Basiskörper (2) mit einer Abschlusswand (3) an dem dem offenen Ende gegenüberliegenden Ende und mit an einem Umfangsbereich des Basiskörpers an oder nahe bei dem offenen Ende angeformten ersten Eingriffsmontagemitteln (4) zur Montage eines Verschlusselementes (7), das komplementäre zweite Eingriffsmontagemitteln (5) aufweist, dadurch gekennzeichnet, dass die ersten Eingriffsmontagemittel (4) innenumfangsseitig des Basiskörpers (2) vorgesehen sind.Plastic injection molded part, which enables subsequent shaping by blow molding into a container, such as a container, a bottle or the like, with a substantially tubular base body (2) which is open at one end and has an end wall (3) at the end opposite the open end and with first engagement mounting means (4) integrally formed on a peripheral region of the base body at or near the open end for mounting a closure element (7) which has complementary second engagement mounting means (5), characterized in that the first engagement mounting means (4) on the inner peripheral side of the base body (2) are provided.

Figure 00000001
Figure 00000001

Description

Die Erfindung betrifft ein Kunststoff-Spritzgiessteil, welches eine nachträgliche Formung durch Blasformen zu einem Behältnis, wie ein Behälter, eine Flasche oder dgl. ermöglicht, sowie ein derartiges Behältnis, hergestellt durch Blasformen des Kunststoff-Spritzgiessteiles.The invention relates to a plastic injection molding, which is an afterthought Blow molding into a container, like a container, a Bottle or the like. and such a container, produced by blow molding the plastic injection molded part.

In der Getränkeindustrie ist es bekannt, gattungsgemässe Kunststoff-Spritzgiessteile, auch als Preform bezeichnet, als Zwischenprodukt für die Herstellung von Getränkeflaschen aus Kunststoff vorzusehen. Die Fertigung der Getränkeflasche erfolgt demnach in einem zweistufigen Verfahren, indem zunächst der Preform durch Spritzgiessen eines geeigneten Kunststoffmaterials gebildet und im Anschluss daran der Preform unter Anwendung einer dem Fachmann bekannten Blasformtechnik in die endgültige Flaschenform ausgeformt wird. Das Spritzgiessen des Preforms als erste Fertigungsstufe ermöglicht eine optimale Ausgestaltung von geeigneten Montageeingriffsmitteln an einem Bereich des Preforms, der später den Mündungshals der Flasche bildet, um ein Verschlusselement zum Verschliessen einer Ausgiessöffnung montieren zu können. Zumeist handelt sich um ein Schraubgewinde, das am äusseren Umfang des Preforms ausgebildet wird. Es hat sich gezeigt, dass durch die bekannten Montageeingriffsmittel nicht nur das Aufdrucken oder Aufkleben von Werbehinweisen auf den Flaschen auf bestimmte Flaschenbereiche begeschränkt werden muss und der Vorgang insgesamt beeinträchtigt wird, sondern es werden auch die Montageeingriffsmittel, da es sich um vorspringende Ausformungen handelt, vom Verbraucher oftmals als störend empfunden, wenn sie in Berührung mit den Lippen gelangen und ein bündigen Anliegen der Lippen am Mündungshals zum Zwecke des Entleerens der Flasche verhindern. Ausserdem wirken sich allgemein die Montageeingriffsmittel störend auf die äussere ästhetische Erscheinungsform der Flasche aus. Ferner wird beim Blasformschritt die Fxierung und thermische Kontrolle desjenigen Bereichs des Preforms erschwert, der den Mündungshals des zu formenden Behältnisses bilden soll und daher am Blasformvorgang nicht beteiligt werden darf.It is known in the beverage industry generic Plastic injection molded parts, also known as preform, as an intermediate product for the Manufacture of beverage bottles made of plastic. The manufacture of the beverage bottle is therefore carried out in a two-stage process, in which the Preform by injection molding a suitable plastic material formed and then the preform using a Blow molding technique known to those skilled in the art into the final bottle shape is formed. The injection molding of the preform as the first stage of production allows an optimal design of suitable assembly intervention means at an area of the preform that later forms the neck of the bottle, mount around a closure element to close a pouring opening to be able to. Mostly it is a screw thread that is on the outside Scope of the preform is formed. It has been shown that through the known assembly intervention means not only the printing or sticking advertisements on the bottles to specific ones Restricted bottle areas must be and the whole process is affected, but it will be also the assembly engagement means, since they are protruding formations acts, often perceived by the consumer as annoying when in contact with the lips and a tight fit of the lips at the neck of the mouth Prevent the purpose of emptying the bottle. Also have an effect generally the assembly intervention means disturbing the outer aesthetic Form of appearance of the bottle. Furthermore, the blow molding step the fixation and thermal control of that area of the preform that complicates the neck of the mouth of the container to be formed should and should therefore not be involved in the blow molding process.

Der Erfindung liegt die Aufgabe zugrunde, ein Kunststoff-Spritzgiessteil der gattungsgemässen Art zu schaffen, das die Fertigung von Behältnissen, wie Behälter, Flaschen oder dgl. ermöglicht, die frei von den mit den vorzusehenden Montageeingriffsmittel bislang bestehenden Problemen sind.The invention is based on the object Plastic injection molding of the generic type to create the Manufacture of containers, such as Container, Bottles or the like. which have so far been free of the assembly intervention means to be provided existing problems are.

Diese Aufgabe wird erfindungsgemäss durch die Merkmale des Anspruchs 1 gelöst. Durch die Erfindung werden die genannten Probleme bei bekannten GetränkeBehältnissen in überraschend einfacher Weise dadurch behoben, dass die fbehältniseitigen Montageeingriffsmittel innenumfangsseitig des Kunststoff-Spritzgiessteiles oder Preforms vorgesehen sind. Dadurch kann ein Behältnis geformt werden, das, wenn erwünscht, auch am Halsbereich, der die Ausgiessöffnung enthält, vollkommen aussen glatt ausgebildet sein kann. Insbesondere fehlen nahe der Ausgiessöffnung nach aussen vorspringende Ausformungen wie ein Schraubgewinde oder Rastbünde, mittels denen bislang eine Verschlusskappe am Behältnis montiert werden musste. Gleichzeitig erleichtert die glatte äussere Ausbildung des Preforms an Bereichen, die später den Halsbereich des Behältnisses bilden, eine genaue Lagefixierung und Temperatursteuerung während des Blasformvorganges.This object is achieved by the Features of claim 1 solved. Through the invention, the problems mentioned are known beverage containers in surprising easily remedied by the fact that the assembly-engaging means on the container side provided on the inside circumference of the plastic injection molding or preform are. This can create a container molded that, if desired, Also completely smooth on the neck area, which contains the pouring opening can be trained. In particular, there is a lack near the pouring opening protruding shapes such as a screw thread or snap collars, by means of which previously had to be fitted with a closure cap on the container. At the same time, the smooth outer shape of the preform makes it easier on areas that later the neck area of the container form, an exact position fixation and temperature control during the Blow molding.

Gegenstand der Erfindung ist ferner ein unter Verwendung eines erfindungsgemässen Kunststoff-Spritzgiessteiles oder Preforms hergestelltes Behältnis mit Verschlusselement.The subject of the invention is furthermore one using a plastic injection molded part according to the invention or preformed container with closure element.

Die Erfindung wird nachfolgend an Hand einer Ausführungsform näher erläutert, die in der Zeichnung in längsgeschnittener Ansicht zusammen mit einer Ausführungsform eines geeigneten Verschlusselementes gezeigt ist.The invention will follow Hand of an embodiment explained in more detail the in the drawing in longitudinal section View along with an embodiment a suitable closure element is shown.

Das Kunststoff-Spritzgiessteil, im Folgenden kurz Preform genannt, trägt in der Zeichnung das allgemeine Bezugszeichen 1 und umfasst wie dargestellt, einen rohrförmigen Basiskörper 2, der an einem axialen Ende durch eine gewölbte Abschlusswand 3 verschlossen ist. Das gegenüberliegende axialen Ende des Basisköroers 2 ist offen und schafft eine kreisförmige Zutrittsöffnung zum Inneren des Preforms. An einem inneren Umfangsbereich des Preforms nahe dessen offenen Ende ist ein Schraubgewinde 4 ausgebildet, das mit einem komplementären Schraubgewinde 5 an der Aussenseite einer Umfangswand 6 eines Verschlusseselementes 7 zusammenwirken kann. Die Umfangswand 6 ist Teil eines napfförmigen Bereiches 8 des Verschlusseselementes 7, der seitens des offenen Endes in den Preform eingeführt werden kann.The plastic injection molding, hereinafter referred to as preform, bears the general reference symbol in the drawing 1 and comprises, as shown, a tubular base body 2 at one axial end through a curved end wall 3 is closed. The opposite axial end of the base body 2 is open and creates a circular access opening to the interior of the preform. There is a screw thread on an inner peripheral region of the preform near its open end 4 trained that with a complementary screw thread 5 on the outside of a peripheral wall 6 a closure element 7 can work together. The peripheral wall 6 is part of a cup-shaped area 8th of the closure element 7 which can be inserted into the preform from the open end.

Am Preform 1 ist ferner ein das offene Ende umfassender Randbereich 9 zwischen einer äusseren Randkante 10, die sich umfänglich des offenen Endes erstreckt, und dem Schraubgewinde 4 vorgesehen, der bei der vorliegenden Ausführungsform sowohl innen- als auch aussenumfänglich glatt ausgebildet ist. Am Verschlusselement 7 kann ferner ein Bereich 11 der Umfangswand 6 eine äussere Abmessung haben, die der inneren Abmessung des Randbereiches 9 des Preforms 1 so angepasst ist, dass zwischen den benachbarten Oberflächen der beiden Bereichen 9, 11 eine abdichtende Beziehung zustande kommt, wenn das Verschlusselement 7 in der in der Zeichnung gezeigten Weise montiert ist.On the preform 1 is also an edge area encompassing the open end 9 between an outer edge 10 , which extends circumferentially of the open end, and the screw thread 4 provided that in the present embodiment is smooth both inside and outside. On the closure element 7 can also be an area 11 the peripheral wall 6 have an outer dimension that the inner dimension of the edge area 9 of the preform 1 is adjusted so that between the adjacent surfaces of the two areas 9 . 11 a sealing relationship comes about when the closure element 7 is mounted in the manner shown in the drawing.

Das Verschlusselement 7 kann ferner einen in radialem Abstand zum Randbereich 10 angeordneten Betätigungsbereich 12 umfassen, der den Randbereich 9 des Preforms 1 übergreifen und mit den Fingern einer Hand einer Person erfasst werden kann, um auf das Verschlusselement 7 eine Drehkraft in die eine oder andere Richtung auszuüben.The closure element 7 can also be a radial distance from the edge area 10 arranged operating area 12 include of the edge area 9 of the preform 1 overlap and can be grasped with the fingers of one hand of a person to the closure element 7 to exert a torque in one direction or the other.

Der äussere Oberfläche des Betätigungsbereiches 12 kann eine Riffelung oder eine andere geeignete Textur, die das Anlegen der Finger erleichtert, aufweisen.The outer surface of the actuator rich 12 can have a corrugation or other suitable texture that makes it easier to put the fingers on.

Die inneren und äusseren umfänglichen Abmessungen des Preforms, wenigstens an den Abschnitten, die das Schraubgewinde 4 und den Randbereich 9 einschliessen, entsprechen im Wesentlichen denjenigen eines Halsbereiches einer aus dem Preform zu fertigenden Flasche oder eines Behälters. Der Preform 1 wird durch Spritzgiessen eines geeigneten Kunststoffes, wie eines Polyolefines, nach dem Fachmann bekannten Techniken gefertigt, wobei das Schraubgewinde 4 vollständig ausgebildet wird. Der Preform 1 wird anschliessend in einem nachfolgenden Fertigungsschritt in einer Blasformmaschine nach ebenfalls grundsätzlich bekannten Techniken einer weiteren Ausformung unterworfen, indem diejenige Bereiche des Preforms 1, die eine radiale Ausdehnung entsprechend dem Volumen der Flasche oder des Behälters erfahren sollen, erwärmt und in einer Blasform mittels Blasdruckluft aufgeweitet werden. Bei diesem Vorgang darf der Bereich des Preforms 1, der das Schraubgewinde 4 trägt und den Randbereich 9 aufweist, keine radiale Erweiterung erfahren, so dass das Schraubgewinde 4 und der Randbereich 9 beim Blasformvorgang erhalten bleiben.The inner and outer circumferential dimensions of the preform, at least on the sections that the screw thread 4 and the edge area 9 essentially correspond to those of a neck area of a bottle or container to be produced from the preform. The preform 1 is produced by injection molding a suitable plastic, such as a polyolefin, using techniques known to those skilled in the art, the screw thread 4 is fully trained. The preform 1 is then subjected to a further shaping in a subsequent production step in a blow molding machine according to likewise basically known techniques, in that the regions of the preform 1 , which are to experience a radial expansion corresponding to the volume of the bottle or container, are heated and expanded in a blow mold by means of compressed air. In this process, the area of the preform is allowed 1 that the screw thread 4 bears and the edge area 9 exhibits no radial expansion, so that the screw thread 4 and the edge area 9 remain during the blow molding process.

Das Verschlusselement 7 kann aus einem geeigneten Kunststoff ebenfalls durch Spritzgiessen gebildet werden. Wegen der Ausbildung des Schraubgewindes 5 am äusseren Umfang des Verschlusselementes 7 wird dessen Entformung aus einer Spritzgiessform gegenüber Verschlüssen bekannter Art mit innenumfänglich vorgesehenem Schraubgewinde erleichtert.The closure element 7 can also be formed from a suitable plastic by injection molding. Because of the formation of the screw thread 5 on the outer circumference of the closure element 7 its removal from an injection mold is made easier compared to closures of known type with a screw thread provided on the inside.

Eine unter Verwendung des Preforms gebildete Flasche oder ein Behälter kann eine durchgehend glatte äussere Oberfläche haben. Wenn erwünscht, kann wie dargestellt, an einer geeigneten zwischenliegenden Stelle zwischen dem offenen Ende und der Abschlusswand 3, z.B. nahe dem Randbereich 9, am äusseren Umfang des Preforms 1 ein Bund 13 vorgesehen sein, der dazu dient, einen Transport des Preforms 1 von einer Fertigungsstufe zur nächsten sowie dessen weitere Bearbeitung in einer Blasformmaschine zu erleichtern.A bottle or container formed using the preform may have a continuously smooth outer surface. If desired, as shown, can be at a suitable intermediate location between the open end and the end wall 3 , for example near the edge area 9 , on the outer circumference of the preform 1 A bunch 13 be provided, which serves to transport the preform 1 from one production stage to the next and its further processing in a blow molding machine.

Obschon bei der vorbeschriebenen und in der Zeichnung gezeigten Ausführungsform der Erfindung die Montageeingriffsmittel Gestalt eines Schraubgewinde ausgebildet sind, können an Stelle davon auch rastend wirkende Montageeingriffsmittel in Gestalt von Rastvorprüngen oder Rastbunden am inneren Umfang des Preforms vorgesehen sein, die in rastendem Eingriff mit komplementären Rastmitteln am Verschlusselement treten können. Der Begriff „im Wesentlichen rohrförmig" in Bezug auf die Konfiguration des Basiskörpers des Preforms schliesst auch eine solche ein, die z.B. birnenförmig ist.Although with the above and the embodiment of the invention shown in the drawing Assembly intervention means designed as a screw thread are, can in place of it also engaging assembly engagement means in Shape of locking projections or locking collars can be provided on the inner circumference of the preform, those in locking engagement with complementary locking means on the closure element can kick. The term “im Essentially tubular "with respect to the Base body configuration of the preform also includes one that e.g. is pear-shaped.

Claims (7)

Kunststoff-Spritzgiessteil, welches eine nachträgliche Formung durch Blasformen zu einem Behältnis, wie ein Behälter, eine Flasche oder dgl. ermöglicht, mit einem im Wesentlichen rohrförmigen, einerends offenen Basiskörper (2) mit einer Abschlusswand (3) an dem dem offenen Ende gegenüberliegenden Ende und mit an einem Umfangsbereich des Basiskörpers an oder nahe bei dem offenen Ende angeformten ersten Eingriffsmontagemitteln (4) zur Montage eines Verschlusselementes (7), das komplementäre zweite Eingriffsmontagemitteln (5) aufweist, dadurch gekennzeichnet, dass die ersten Eingriffsmontagemittel (4) innenumfangsseitig des Basiskörpers (2) vorgesehen sind.Plastic injection molded part, which enables subsequent shaping by blow molding into a container, such as a container, a bottle or the like, with a substantially tubular base body open at one end ( 2 ) with an end wall ( 3 ) at the end opposite the open end and with first engagement mounting means molded onto a peripheral region of the base body at or near the open end ( 4 ) for mounting a locking element ( 7 ), the complementary second engaging assembly means ( 5 ), characterized in that the first engagement mounting means ( 4 ) inner circumference of the base body ( 2 ) are provided. Kunststoff-Spritzgiessteil nach Anspruch 1, dadurch gekennzeichnet, dass die Eingriffsmontagemittel (4,5) als Schraubeingriffsmittel ausgebildet sind.Plastic injection molding according to claim 1, characterized in that the engagement mounting means ( 4 . 5 ) are designed as screw engagement means. Kunststoff-Spritzgiessteil nach Anspruch 1, dadurch gekennzeichnet, dass die Eingriffsmontagemittel (4,5) ausgebildet sind, um in rastendem Eingriff miteinander zu treten.Plastic injection molding according to claim 1, characterized in that the engagement mounting means ( 4 . 5 ) are designed to engage with each other in a latching engagement. Kunststoff-Spritzgiessteil nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass wenigstens ein das offene Ende umfassender Randbereich (9) des Basiskörpers (2) wenigstens aussenumfänglich glatt ausgebildet ist.Plastic injection molding according to claim 1, 2 or 3, characterized in that at least one edge region ( 9 ) of the base body ( 2 ) is smooth at least on the outside. Behältnis, wie ein Behälter, eine Flasche oder dgl., hergestellt durch Blasformen unter Verwendung eines Kunststoff-Spritzgiessteiles (1) gemäss einem oder mehreren der Ansprüche 1 bis 4.Container, such as a container, bottle or the like, made by blow molding using a plastic injection molded part ( 1 ) according to one or more of claims 1 to 4. Behältnis nach Anspruch 5, dadurch gekennzeichnet, dass ein Verschlusselement (7) zum Verschliessen einer Ausgiessöffnung des Behältnisses vorgesehen ist, das einen in eine Ausgiessöftnung des Behältnisses einführbaren napfförmigen Bereich (8) aufweist, an dessen äusseren Umfang ein Schraubgewinde (5) oder Rastmittel zur Eingriffnahme mit einem komplementären Schraubgewinde (4) oder Rastmitteln an einem inneren Umfangsbereich des Behältnisses vorgesehen ist.Container according to claim 5, characterized in that a closure element ( 7 ) is provided for closing a pouring opening of the container, which has a cup-shaped area that can be inserted into a pouring opening of the container ( 8th ) has a screw thread on its outer circumference ( 5 ) or locking means for engagement with a complementary screw thread ( 4 ) or locking means is provided on an inner peripheral region of the container. Behältnis nach Anspruch 6, dadurch gekennzeichnet, dass das Verschlusselement (7) einen einen Randbereich (9) des Behältnisses nahe dessen Ausgiessöffnung aussenumfänglich umgreifenden Betätigungsbereich (12) aufweist.Container according to claim 6, characterized in that the closure element ( 7 ) a border area ( 9 ) of the container near its pouring opening encompassing the outer operating area ( 12 ) having.
DE2003214295 2003-09-15 2003-09-15 Plastic injection molded part, and container, produced by blow molding the plastic molded part Expired - Lifetime DE20314295U1 (en)

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EP2447026A3 (en) * 2010-11-02 2015-03-18 Krones AG Preform and method for handling and processing preforms
EP2987597A1 (en) * 2014-08-20 2016-02-24 Krones AG Blow moulding method with previously sealed preform, and preform
CH710295A1 (en) * 2014-10-29 2016-04-29 Alpla Werke Alwin Lehner Gmbh & Co Kg Stretch blow molded plastic containers, especially plastic bottles, to compensate for changes in volume of the medium.
WO2016134017A1 (en) * 2015-02-18 2016-08-25 Kao Usa Internal threaded tube
WO2021115833A1 (en) * 2019-12-12 2021-06-17 L'oreal Method for manufacturing a container preform using additive manufacturing

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TWI600523B (en) * 2016-01-29 2017-10-01 Jun-Teng Liu Plastic preform structure
CN110997279B (en) * 2017-07-27 2022-06-10 日精Asb机械株式会社 Method and apparatus for molding hollow article, and hollow article

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JPS62156923A (en) * 1985-12-28 1987-07-11 Nissei Ee S B Kikai Kk Injection blow molding method of vessel made of synthetic resin having threaded part on inside of opening part
JPH1076566A (en) * 1996-09-05 1998-03-24 Aokiko Kenkyusho:Kk Molding of inner screw of neck part in preform
DE19924827A1 (en) * 1999-03-24 2000-10-05 Krones Ag Bottle primarily for drinks such as beer, lemonade etc. is provided with elements which are located on the inner surface of the bottle mouth and mesh with the corresponding elements on the stopper circumference

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447026A3 (en) * 2010-11-02 2015-03-18 Krones AG Preform and method for handling and processing preforms
EP2987597A1 (en) * 2014-08-20 2016-02-24 Krones AG Blow moulding method with previously sealed preform, and preform
CH710295A1 (en) * 2014-10-29 2016-04-29 Alpla Werke Alwin Lehner Gmbh & Co Kg Stretch blow molded plastic containers, especially plastic bottles, to compensate for changes in volume of the medium.
WO2016066397A1 (en) * 2014-10-29 2016-05-06 Alpla Werke Alwin Lehner Gmbh & Co. Kg Stretch blow-molded plastic container, in particular plastic bottle, for compensating volume changes of the filling material, and preform
US10093472B2 (en) 2014-10-29 2018-10-09 Alpla Werke Alwin Lehner Gmbh & Co. Kg Stretch blow-molded plastic container, in particular plastic bottle, for compensating volume changes of the filling material, and preform
WO2016134017A1 (en) * 2015-02-18 2016-08-25 Kao Usa Internal threaded tube
US10800578B2 (en) 2015-02-18 2020-10-13 Kao Usa Inc. Internal threaded tube
WO2021115833A1 (en) * 2019-12-12 2021-06-17 L'oreal Method for manufacturing a container preform using additive manufacturing
FR3104483A1 (en) * 2019-12-12 2021-06-18 L'oreal Method of manufacturing a preform for a container by additive manufacturing

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