EP1585678B1 - Tear-tab pouring part consisting of plastic and injection mould for producing said part - Google Patents

Tear-tab pouring part consisting of plastic and injection mould for producing said part Download PDF

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Publication number
EP1585678B1
EP1585678B1 EP04700105A EP04700105A EP1585678B1 EP 1585678 B1 EP1585678 B1 EP 1585678B1 EP 04700105 A EP04700105 A EP 04700105A EP 04700105 A EP04700105 A EP 04700105A EP 1585678 B1 EP1585678 B1 EP 1585678B1
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EP
European Patent Office
Prior art keywords
pouring
film
neck
pouring part
periphery
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 - Lifetime
Application number
EP04700105A
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German (de)
French (fr)
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EP1585678A1 (en
Inventor
Wolfgang Zangerle
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Schottli AG
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Schottli AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • B65D5/72Contents-dispensing means
    • B65D5/74Spouts
    • B65D5/746Spouts formed separately from the container

Definitions

  • the invention relates to a tear-open pouring part made of plastic for liquid, pasty or powdery products according to the preamble of claim 1.
  • a pouring part is in US-A-4948015 disclosed.
  • the invention is further an injection molding tool according to the preamble of claim 8.
  • Such a Spritzwerhzeug is in EP-A-1029795 disclosed.
  • Tear-open spouts facilitate the opening of plastic containers such as bottles and also containers of laminated materials such as beverage packs, e.g. Brick packs, sacks and bags.
  • beverage packs e.g. Brick packs, sacks and bags.
  • Such spouts are known in various designs. Only made of plastic pouring parts have the disadvantage that their gas vapor tightness is guaranteed, especially in the area of the rupturable opening cross-section only to a limited extent.
  • a known spout part with improved gas-vapor tightness comprises a metal foil glued under the opening to be broken up, which is pressed in by pressing an overlying, firmly connected to the neck of the spout part plastic disc can be pressed and broken.
  • plastic disc can be pressed and broken.
  • predetermined breaking lines are attached, which allow the depression of the disc into the center.
  • a disadvantage of this spout are the after pressing radially into the interior of the container projecting, with the neck still connected fragments of the plastic lid and the torn metal foil, which are not removable.
  • Object of the present invention is to provide a rupturable spout with maximum gas-tightness and a residue after opening from the spout removable, the spout previously closing lid part.
  • the inventive pouring part not only an optimal gas vapor tightness in the region of the pouring opening is ensured, but over the entire cross section of the pouring part, ie to the periphery of the flange of the pouring part, which with the container by gluing, Sealing or welding is connected.
  • the cut edge of the metal foil which is inserted into the injection mold before spraying of the pouring part, is likewise completely encapsulated by plastic, so that corrosion in the region of the cut edge by the filling material can be completely prevented.
  • the cover part spanning the spout opening can be easily removed from the spout part when it is torn open by means of a tear-open tab together with the underlying metal foil.
  • the cross section of the spout opening is then fully available for the spout.
  • the production of the spout is cost-effective in a single stroke within the injection mold. Reworking is no longer necessary on the molded part after removal from the mold.
  • the generation of the predetermined breaking line in the cover part on the circumference of the spout opening and the cover part holding the neck connecting webs takes place when closing the injection mold. An additional post-processing and the related handing can be omitted.
  • the spout designated by the reference numeral 1 in the figures comprises a disk-shaped base or foot plate 3 with a cylindrical jacket-shaped neck 5 placed thereon.
  • a lid can be placed on the neck 5 if desired or necessary.
  • the base plate 3 surrounds the neck 5 outside as an annular disc 7 and inside the neck 5 as a circular disc 9, which forms the lid part.
  • the cover part 9 further comprises a spaced from the inner side 11 of the neck 5, axially extending connecting web 13, which carries at its upper end a tear-15.
  • the tear tab 15 is preferably formed as an annular body.
  • the lid part 9 in the interior of the neck 5 is connected to the inside 11 of the latter by a plurality of connections 17.
  • a barrier or vapor barrier in the form of a metal foil 23, for example a coated aluminum foil is applied.
  • the metal foil 23 preferably spans the entire surface of the base plate 3 with the exception of a narrow, for example 0.5 - 1mm wide region 25 at the periphery of the base plate 3. In this annular region 25, the cutting edge of the metal foil 23 made as a stamped part of the plastic of the base plate 3 and the pouring part 1 enclosed and thus completely covered.
  • the metal foil 23 also spans the gaps 21 between the connections 17 or between the periphery 19 of the cover part 9 and the inside 11 of the neck 5.
  • the cross-section of the gap 21 between the inside 11 of the neck 5 and the periphery 19 of the lid part 9 may be V-shaped (not shown), V-shaped with a blunt tip (cf. FIG. 5 ) or rectangular in cross-section (not shown) may be formed.
  • the connections 17 may have a trapezoidal cross-section (cf. Figures 1-3 ), wherein the longer base on the periphery 19 of the lid part 9 and the shorter are on the inside 11 of the neck 5 and connected there. Alternatively, the connections 17 may also be rectangular (not shown).
  • the production of the inventive pouring part 1 is carried out directly in an injection mold of an injection molding machine without additional post-processing.
  • the injection mold is closed.
  • the inner side 11 of the neck 5 bounding annular tool part is lid part side configured with a holding and pinch edge, which edge enters frictional contact with the inserted in the injection mold film 23 and presses it to the injection mold.
  • the film 23 is held in the inserted position, ie, the periphery of the film is at a distance of, for example 0.5 to 1 mm to the wall of the injection mold, which forms the periphery of the base plate 3.
  • the holding edge of the injection mold not only serves to hold the film 23 accurately positioned, but it prevents in the region of the gaps 21 the entry of plastic onto the surface of the film 23.
  • the film 23 consequently remains in the region of the gaps 21 free on both sides of plastic material from which the pouring part 1 is injected. If preferably the gating takes place in the center of the cover part 9, the plastic material flows radially outward through the connections 17. Moving, upsetting or injecting the film 23 is thereby prevented properly.
  • the pouring part 1 After the application / insertion of the pouring part 1 in a container (not shown) or in a corresponding opening, in which the container forming multi-layer material and after the corresponding bonding with the latter, the pouring part 1 forms a completely vapor-tight closure.
  • the opening of the inventive pouring part 1 is extremely simple and, above all, safe.
  • the connections 17 are broken one after the other and the film 23 in the region of the gaps or slots 19 breaks free of residue and remains on the torn-off cover part 9.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Abstract

The invention relates to a pouring part (1) comprising a base plate (3), on which a neck (5) that surrounds the pouring opening is formed. The pouring opening is sealed by foil (23) that acts as a barrier and a lid part (9) that is mounted on the foil (23). The lid part (9) is connected to the neck (5) by radial connecting pieces (17). When the container is opened by pulling the tab (15), the flexurally resistant lid part (9) splits from the neck (5), tearing open the foil (23) lying below and thus exposing the entire pouring cross-section of the neck (5).

Description

Gegenstand der Erfindung ist ein aufreissbarer Ausgussteil aus Kunststoff für flüssige, pastöse oder pulverförmige Produkte gemäss Oberbegriff des Patentanspruchs 1. Ein solcher Ausgussteil wird in US-A-4948015 offenbart. Gegenstand der Erfindung ist weiter ein Spritzwerkzeug gemäss Oberbegriff des Patentanspruchs 8. Ein solcher Spritzwerhzeug wird in EP-A-1029795 offenbart.The invention relates to a tear-open pouring part made of plastic for liquid, pasty or powdery products according to the preamble of claim 1. Such a pouring part is in US-A-4948015 disclosed. The invention is further an injection molding tool according to the preamble of claim 8. Such a Spritzwerhzeug is in EP-A-1029795 disclosed.

Aufreissbare Ausgussteile erleichtern das öffnen von Kunststoffgebinden wie Flaschen und auch Gebinden aus laminierten Materialien wie Getränkepackungen, z.B. Brickpackungen, Säcke und Beutel. Solche Ausgussteile sind in verschiedenen Ausführungen bekannt. Ausschliesslich aus Kunststoff hergestellte Ausgussteile haben den Nachteil, dass deren Gasdampfdichtigkeit insbesondere im Bereich des aufreissbaren öffnungsquerschnitts nur in beschränktem Umfange gewährleistet ist.Tear-open spouts facilitate the opening of plastic containers such as bottles and also containers of laminated materials such as beverage packs, e.g. Brick packs, sacks and bags. Such spouts are known in various designs. Only made of plastic pouring parts have the disadvantage that their gas vapor tightness is guaranteed, especially in the area of the rupturable opening cross-section only to a limited extent.

Ein bekannter Ausgussteil mit verbesserter Gasdampfdichtigkeit umfasst eine unter die aufzubrechende Öffnung geklebte Metallfolie, welche durch Eindrücken einer darüber liegenden, fest mit dem Hals des Ausgussteils verbundenen Scheibe aus Kunststoff eingedrückt und aufgebrochen werden kann. In der Scheibe sind radial verlaufende Sollbruchlinien angebracht, die das Eindrücken der Scheibe ins Zentrum erlauben. Nachteilig an diesem Ausgussteil sind die nach dem Eindrücken radial in das Innere des Gebindes ragenden, mit dem Hals noch verbundenen Fragmente des Kunststoffdeckels und der aufgerissenen Metallfolie, die nicht entfernbar sind.A known spout part with improved gas-vapor tightness comprises a metal foil glued under the opening to be broken up, which is pressed in by pressing an overlying, firmly connected to the neck of the spout part plastic disc can be pressed and broken. In the disc radially extending predetermined breaking lines are attached, which allow the depression of the disc into the center. A disadvantage of this spout are the after pressing radially into the interior of the container projecting, with the neck still connected fragments of the plastic lid and the torn metal foil, which are not removable.

Aufgabe der vorliegenden Erfindung ist die Schaffung eines aufreissbaren Ausgussteils mit maximaler Gasdampfdichtigkeit und einem rückstandslos nach dem öffnen aus dem Ausgussteil entfernbaren, die Ausgussöffnung zuvor verschliessenden Deckelteil.Object of the present invention is to provide a rupturable spout with maximum gas-tightness and a residue after opening from the spout removable, the spout previously closing lid part.

Gelöst wird diese Aufgabe durch einen aufreissbaren Ausgussteil gemäss den Merkmalen des Patentanspruchs 1. Besonders vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen definiert.This object is achieved by a rupturable spout part according to the features of claim 1. Particularly advantageous embodiments of the invention are defined in the dependent claims.

Mit dem erfindungsgemässen Ausgussteil ist nicht nur eine optimale Gasdampfdichtigkeit im Bereich der Ausgussöffnung gewährleistet, sondern über den gesamten Querschnitt des Ausgussteils, d.h. bis zur Peripherie des Flanschringes des Ausgussteils, welcher mit dem Gebinde durch Kleben, Siegeln oder Schweissen verbunden wird. Die Schnittkante der Metallfolie, welche vor dem Spritzen des Ausgussteils in die Spritzgussform eingelegt wird, wird ebenfalls von Kunststoff vollständig umspritzt, so dass eine Korrosion im Bereich der Schnittkante durch das Füllgut vollständig verhindert werden kann. Der die Ausgussöffnung überspannende Deckelteil kann beim Aufreissen mittels einer Aufreisslasche zusammen mit der darunter liegenden Metallfolie mühelos und rückstandsfrei aus dem Ausgussteil herausgelöst werden. Der Querschnitt der Ausgussöffnung steht danach vollflächig für den Ausguss zur Verfügung. Die Herstellung des Ausgussteils erfolgt kostengünstig in einem einzigen Arbeitstakt innerhalb des Spritzwerkzeugs. Nacharbeiten sind am Spritzling nach dem Entformen nicht mehr notwendig. Die Erzeugung der Sollbruchlinie im Deckelteil am Umfang der Ausgussöffnung und die den Deckelteil am Hals haltenden Verbindungsstege findet beim Schliessen der Spritzgussform statt. Eine zusätzliche Nachbearbeitung und das damit zusammenhängende Handing kann entfallen.With the inventive pouring part not only an optimal gas vapor tightness in the region of the pouring opening is ensured, but over the entire cross section of the pouring part, ie to the periphery of the flange of the pouring part, which with the container by gluing, Sealing or welding is connected. The cut edge of the metal foil, which is inserted into the injection mold before spraying of the pouring part, is likewise completely encapsulated by plastic, so that corrosion in the region of the cut edge by the filling material can be completely prevented. The cover part spanning the spout opening can be easily removed from the spout part when it is torn open by means of a tear-open tab together with the underlying metal foil. The cross section of the spout opening is then fully available for the spout. The production of the spout is cost-effective in a single stroke within the injection mold. Reworking is no longer necessary on the molded part after removal from the mold. The generation of the predetermined breaking line in the cover part on the circumference of the spout opening and the cover part holding the neck connecting webs takes place when closing the injection mold. An additional post-processing and the related handing can be omitted.

Anhand illustrierter Ausführungsbeispiele wird die Erfindung näher erläutert. Es zeigen

Figur 1
eine perspektivische Darstellung des Ausgussteils von oben,
Figur 2
eine perspektivische Darstellung des Ausgussteils von unten,
Figur 3
eine perspektivische Darstellung des Ausgussteils teilweise aufgeschnitten von oben,
Figur 4
einen perspektivisch dargestellten Diagonalschnitt durch den Ausgussteil mit Vförmiger Rille und eine vergrösserte Darstellung einer V-förmigen Rille mit stumpfem Grund,
Figur 5
eine vergrösserte Darstellung der Rille (Ausschnitt A in Figur 4).
Based on illustrated embodiments, the invention will be explained in more detail. Show it
FIG. 1
a perspective view of the spout from above,
FIG. 2
a perspective view of the spout from below,
FIG. 3
a perspective view of the pouring part partially cut from above,
FIG. 4
a diagonal section shown in perspective through the spout part with V-shaped groove and an enlarged view of a V-shaped groove with a blunt background,
FIG. 5
an enlarged view of the groove (detail A in FIG. 4 ).

Der in den Figuren mit Bezugszeichen 1 bezeichnete Ausgussteil umfasst eine scheibenförmige Basis- oder Fussplatte 3 mit einem auf dieser aufgesetzten zylindermantelförmigen Hals 5. Am Hals 5 kann, falls erwünscht oder notwendig, ein Deckel aufgesetzt werden. Die Basisplatte 3 umgibt den Hals 5 aussen als kreisringförmige Scheibe 7 und im Innern des Halses 5 als Kreisscheibe 9, die den Deckelteil bildet. Der Deckelteil 9 umfasst weiter einen beabstandet zur Innenseite 11 des Halses 5 liegenden, axial verlaufenden Verbindungssteg 13, welcher an seinem oberen Ende eine Aufreisslasche 15 trägt. Die Aufreisslasche 15 ist vorzugsweise als kreisringförmiger Körper ausgebildet. Der Deckelteil 9 im Innern des Halses 5 ist mit der Innenseite 11 des letzteren durch eine Mehrzahl von Anbindungen 17 verbunden. Zwischen den benachbarten Anbindungen 17 und der Peripherie 19 des Deckelteils 9 liegt je ein Spalt 21 vor, d.h. die Peripherie des scheibenförmigen Deckelteils 9 ist in diesem Bereich nicht mit der Innenseite 15 des Halses 5 verbunden.
Auf der Unterseite der Basisplatte 3 ist eine Barriere oder Dampfsperre in Gestalt einer Metallfolie 23, z.B. eine beschichtete Alufolie aufgebracht. Die Metallfolie 23 überspannt vorzugsweise die gesamte Fläche der Basisplatte 3 mit Ausnahme eines schmalen, beispielsweise 0,5 - 1mm breiten Bereichs 25 an der Peripherie der Basisplatte 3. In diesem kreisringförmigen Bereich 25 ist die Schnittkante der als Stanzteil gefertigten Metallfolie 23 vom Kunststoff der Basisplatte 3 bzw. des Ausgussteils 1 umschlossen und damit vollständig abgedeckt.
Die Metallfolie 23 überspannt auch die Spalten 21 zwischen den Anbindungen 17 bzw. zwischen der Peripherie 19 des Deckelteils 9 und der Innenseite 11 des Halses 5.
Der Querschnitt des Spaltes 21 zwischen der Innenseite 11 des Halses 5 und der Peripherie 19 des Deckelteils 9 kann V-förmig (keine Abbildung), V-förmig mit stumpfer Spitze (vergleiche Figur 5) oder im Querschnitt rechteckförmig (keine Abbildung) ausgebildet sein. Die Anbindungen 17 können einen trapezförmigen Querschnitt aufweisen (vergleiche Figuren 1-3), wobei die längere Basis an der Peripherie 19 des Deckelteils 9 und die kürzere an der Innenseite 11 des Halses 5 liegen und dort angebunden sind. Alternativ können die Anbindungen 17 auch rechteckförmig ausgebildet sein (keine Abbildung).
The spout designated by the reference numeral 1 in the figures comprises a disk-shaped base or foot plate 3 with a cylindrical jacket-shaped neck 5 placed thereon. A lid can be placed on the neck 5 if desired or necessary. The base plate 3 surrounds the neck 5 outside as an annular disc 7 and inside the neck 5 as a circular disc 9, which forms the lid part. The cover part 9 further comprises a spaced from the inner side 11 of the neck 5, axially extending connecting web 13, which carries at its upper end a tear-15. The tear tab 15 is preferably formed as an annular body. The lid part 9 in the interior of the neck 5 is connected to the inside 11 of the latter by a plurality of connections 17. Between the adjacent connections 17 and the periphery 19 of the cover part 9 is ever before a gap 21, ie the periphery of the disk-shaped cover part 9 is not connected to the inside 15 of the neck 5 in this area.
On the underside of the base plate 3, a barrier or vapor barrier in the form of a metal foil 23, for example a coated aluminum foil is applied. The metal foil 23 preferably spans the entire surface of the base plate 3 with the exception of a narrow, for example 0.5 - 1mm wide region 25 at the periphery of the base plate 3. In this annular region 25, the cutting edge of the metal foil 23 made as a stamped part of the plastic of the base plate 3 and the pouring part 1 enclosed and thus completely covered.
The metal foil 23 also spans the gaps 21 between the connections 17 or between the periphery 19 of the cover part 9 and the inside 11 of the neck 5.
The cross-section of the gap 21 between the inside 11 of the neck 5 and the periphery 19 of the lid part 9 may be V-shaped (not shown), V-shaped with a blunt tip (cf. FIG. 5 ) or rectangular in cross-section (not shown) may be formed. The connections 17 may have a trapezoidal cross-section (cf. Figures 1-3 ), wherein the longer base on the periphery 19 of the lid part 9 and the shorter are on the inside 11 of the neck 5 and connected there. Alternatively, the connections 17 may also be rectangular (not shown).

Alternativ zu der in den Figuren dargestellten kreisförmigen Basisplatte 3 könnte diese auch eine beliebige andere Gestalt aufweisen, z.B. eine mehreckige Peripherie aufweisen. Das Gleiche gilt für den Hals 5, der ebenfalls statt im Querschnitt kreisförmig oval oder mehreckig ausgestaltet sein könnte. Entsprechend würde sich die Gestalt des Deckelteils 9 verändern.As an alternative to the circular base plate 3 shown in the figures, this could also have any other shape, e.g. have a polygonal periphery. The same applies to the neck 5, which could also be configured in a circular oval or polygonal shape instead of in cross section. Accordingly, the shape of the cover part 9 would change.

Die Herstellung des erfindungsgemässen Ausgussteils 1 erfolgt direkt in einer Spritzgussform einer Spritzgussmaschine ohne zusätzliche Nachbearbeitung. Nach dem Einlegen, der als Barriere dienenden Folie 23, wird die Spritzgussform geschlossen. Der die Innenseite 11 des Halses 5 begrenzende ringförmige Werkzeugteil ist deckelteilseitig mit einer Halte- und Quetschkante ausgestaltet, welche Kante in kraftschlüssige Anlage mit der in der Spritzgussform eingelegten Folie 23 gelangt und diese an die Spritzgussform anpresst. Durch die Anpresskraft wird die Folie 23 in der eingelegten Position festgehalten, d.h. die Peripherie der Folie liegt in einem Abstand von beispielsweise 0,5 - 1mm zur Wandung der Spritzgussform, welche die Peripherie der Basisplatte 3 bildet. Die Haltekante der Spritzgussform dient nicht nur dazu, die Folie 23 exakt positioniert festzuhalten, sondern sie verhindert im Bereich der Spalten 21 den Zutritt von Kunststoff auf die Oberfläche der Folie 23. Die Folie 23 verbleibt folglich im Bereich der Spalten 21 beidseitig frei von Kunststoffmaterial, aus dem das Ausgussteil 1 gespritzt wird. Das Kunststoffmaterial fliesst, wenn vorzugsweise die Anspritzung im Zentrum des Deckelteils 9 erfolgt, durch die Anbindungen 17 radial nach aussen. Ein Verschieben, Aufstauchen oder Unterspritzen der Folie 23 wird dadurch einwandfrei unterbunden.The production of the inventive pouring part 1 is carried out directly in an injection mold of an injection molding machine without additional post-processing. After inserting the barrier foil 23, the injection mold is closed. The inner side 11 of the neck 5 bounding annular tool part is lid part side configured with a holding and pinch edge, which edge enters frictional contact with the inserted in the injection mold film 23 and presses it to the injection mold. By the contact pressure, the film 23 is held in the inserted position, ie, the periphery of the film is at a distance of, for example 0.5 to 1 mm to the wall of the injection mold, which forms the periphery of the base plate 3. The holding edge of the injection mold not only serves to hold the film 23 accurately positioned, but it prevents in the region of the gaps 21 the entry of plastic onto the surface of the film 23. The film 23 consequently remains in the region of the gaps 21 free on both sides of plastic material from which the pouring part 1 is injected. If preferably the gating takes place in the center of the cover part 9, the plastic material flows radially outward through the connections 17. Moving, upsetting or injecting the film 23 is thereby prevented properly.

Nach dem Aufbringen/Einsetzen des Ausgussteils 1 in ein Gebinde (nicht dargestellt) oder in eine entsprechende Öffnung, in dem das Gebinde bildenden Mehrschichtmaterial und nach dem entsprechenden Verkleben mit letzterem, bildet das Ausgussteil 1 einen völlig dampfdichten Verschluss. Die grosse Überlappung der Folie 23 im Bereich des Flanschteils 7, d.h. der kreisringförmigen Scheibe mit dem anliegenden Gebindematerial, verhindert eine radial verlaufende Penetration von Gasen oder Flüssigkeit von der Gebindeaussenseite in dessen Inneres.After the application / insertion of the pouring part 1 in a container (not shown) or in a corresponding opening, in which the container forming multi-layer material and after the corresponding bonding with the latter, the pouring part 1 forms a completely vapor-tight closure. The large overlap of the film 23 in the region of the flange 7, i. the annular disc with the adjacent container material, prevents a radial penetration of gases or liquid from the container outside in its interior.

Das öffnen des erfindungsgemässen Ausgussteils 1 ist äusserst einfach und vor allem sicher. Durch Anheben der Lasche 15 und Ziehen in axialer Richtung werden die Anbindungen 17 nacheinander gebrochen und die Folie 23 im Bereich der Spalten oder Schlitze 19 reisst rückstandsfrei ab und verbleibt am abgerissenen Deckelteil 9.The opening of the inventive pouring part 1 is extremely simple and, above all, safe. By lifting the tab 15 and pulling in the axial direction, the connections 17 are broken one after the other and the film 23 in the region of the gaps or slots 19 breaks free of residue and remains on the torn-off cover part 9.

Claims (8)

  1. Tearable pouring part (1), formed from plastics material, for a container for liquid, pasty or pulverulent products, said pouring part having a flange (7) and a neck (5), situated on the flange (7) and surrounding the pouring opening, on which neck a reclosing means is mountable, and said pouring part having a film (23), lying in the plane of the flange (7) and spanning the pouring opening, which film is breakable during the opening process and serves as a vapour barrier, the film (23) being disposed on the underside of the flange (7) and spanning the underside of the pouring part (1), characterised in that, in the region of the pouring opening in the interior of the neck (5), the film (23) is covered by a disc-shaped plastics material layer serving as the lid part (9), which is connected to the inside (11) of the neck (5) by a plurality of peripherally disposed connecting pieces (17).
  2. Pouring part according to claim 1, characterised in that the periphery (19) of the lid part (9) is spaced from the inside (11) of the neck (5) so as to form a gap (21), and in that the gap (21) is divided into a plurality of portions by the connecting pieces (17).
  3. Pouring part according to claim 2, characterised in that the gap (21) between the lid part (9) and the neck (5) is closed at the lower end by the film (23).
  4. Pouring part according to one of claims 1 to 3, characterised in that, during the injection-moulding of the pouring part (1), the film (23) is connected to the underside of said pouring part.
  5. Pouring part according to claim 4, characterised in that the periphery of the film (23) lies at a spacing from the periphery of the base plate (3), and the edge of the film has plastics material sprayed therearound.
  6. Pouring part according to one of claims 1 to 5, characterised in that the connecting pieces (17) have trapezoidal or rectangular configurations.
  7. Pouring part according to one of claims 1 to 6, characterised in that, on the lid part (9), a tear-tab (15) is connected to a connecting web (13).
  8. Injection-moulding tool for the production of a pouring part (1) according to claim 1, characterised in that the part of the tool which forms the inside (11) of the neck (5) surrounds a retaining and crushing edge, which presses and retains the film (23), introduced into the tool, against the counter-mould and prevents plastics material from entering the gap (21) to be formed and prevents said material from encountering the film (23).
EP04700105A 2003-01-08 2004-01-05 Tear-tab pouring part consisting of plastic and injection mould for producing said part Expired - Lifetime EP1585678B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH282003 2003-01-08
CH282003 2003-01-08
PCT/CH2004/000001 WO2004063033A1 (en) 2003-01-08 2004-01-05 Tear-tab pouring part consisting of plastic and injection mould for producing said part

Publications (2)

Publication Number Publication Date
EP1585678A1 EP1585678A1 (en) 2005-10-19
EP1585678B1 true EP1585678B1 (en) 2008-04-02

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EP04700105A Expired - Lifetime EP1585678B1 (en) 2003-01-08 2004-01-05 Tear-tab pouring part consisting of plastic and injection mould for producing said part

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EP (1) EP1585678B1 (en)
AT (1) ATE391084T1 (en)
DE (1) DE502004006717D1 (en)
ES (1) ES2305709T3 (en)
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US20090297070A1 (en) * 2008-05-29 2009-12-03 Berman Ronald H Zip sealed flexible pouch

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EP1585678A1 (en) 2005-10-19
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DE502004006717D1 (en) 2008-05-15
WO2004063033A1 (en) 2004-07-29

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