WO2007006163A1 - Dispositif de coulee etanche a l'oxygene comprenant une tubulure et une bride, destine a des emballages de carton composites - Google Patents

Dispositif de coulee etanche a l'oxygene comprenant une tubulure et une bride, destine a des emballages de carton composites Download PDF

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Publication number
WO2007006163A1
WO2007006163A1 PCT/CH2006/000337 CH2006000337W WO2007006163A1 WO 2007006163 A1 WO2007006163 A1 WO 2007006163A1 CH 2006000337 W CH2006000337 W CH 2006000337W WO 2007006163 A1 WO2007006163 A1 WO 2007006163A1
Authority
WO
WIPO (PCT)
Prior art keywords
tight
oxygen
nozzle
pourer
polyolefin
Prior art date
Application number
PCT/CH2006/000337
Other languages
German (de)
English (en)
Inventor
Markus Wassum
Original Assignee
Sig Technology Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sig Technology Ltd. filed Critical Sig Technology Ltd.
Publication of WO2007006163A1 publication Critical patent/WO2007006163A1/fr

Links

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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
    • 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
    • B65D5/00—Rigid 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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • 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

Definitions

  • This invention relates to a spout for cardboard composite packages in the form of a plastic part, which includes a nozzle and a flange without built-barrier film, is manufactured as a molded part, and yet has a through the nozzle and flange continuous gas barrier.
  • sealable polyolefins can be processed, for example polypropylene or polyethylene, which, however, are generally not sufficiently gas-tight and for many applications do not sufficiently prevent oxygen permeation.
  • gas-tight all sorts of plastic films such as those of polymers and especially laminate films such as ethylene-vinyl-alcohol copolymer films (EVOH films) or as known under the trade name nylon polyamide films. They are excellent gas barriers for food packaging as well as other non-food substances. Because this material is hygroscopic, the gas barrier properties depend on the moisture.
  • Such laminate films are thermoformable while retaining their laminate structure.
  • Common processing methods include thermoforming, thermoblowing and extruding these films.
  • One solution for achieving a gas-tight pourer is to place a deep-drawn EVOH laminate film in the injection mold and then to overmould it with polyethylene from one or both sides.
  • this production method is complex and correspondingly expensive.
  • the co-injection process is known, by means of which two different components are introduced into an injection molding tool, for example a polyolefin with an EVOH at the same time, so that the EVOH component is then enveloped by the polyolefin.
  • an injection molding tool for example a polyolefin with an EVOH at the same time
  • the EVOH component is then enveloped by the polyolefin.
  • a spout encloses a flange and then passes from its inner edge into a spout arranged perpendicular thereto prevents the skilled person from the application of this method.
  • the neck in this way could be made gas-tight, or the flange projecting therefrom.
  • the gas tightness desired here requires that the spout be both completely and continuously, that is, its neck as well as seamlessly its flange both gas-tight, namely also oxygen-tight.
  • this at the top of the nozzle often sealed with a film for also gas-tight closure of the clear opening.
  • this upper surface of the nozzle is absolutely flat and made of a sealable material, and that the edges of this upper surface are clearly defined, clean and brow-free.
  • the object of the present invention is to provide an oxygen-tight pour spout with nozzle and flange for cardboard composite packages, which is rationally produced.
  • a spout with nozzle and flange for cardboard composite packages which is characterized in that it is in a Co - Injection method is made so that it contains over its entire cross-section, that is over the cross-section of the nozzle as well as the flange projecting therefrom a continuous core layer of barrier plastic material which is surrounded on all sides by a polyolefin.
  • a spout is a typical molded part, which is classified as a molded part by a plastics expert due to its geometric design, appearance and texture.
  • Figure 1 The pourer in a perspective view
  • Figure 2 The pourer shown in an elevation
  • FIG. 3 shows the pourer in a cross section
  • Figure 4 The pourer in a cross section, after injection of the outer component, that is the polyolefin;
  • Figure 5 The spout in a cross section, during the injection of the EVOH component in the soft core of the polyolefin and its displacement;
  • Figure 6 The finished pourer in a perspective view, before the Wegunganzen of Schirmangusses;
  • Figure 7 The pourer in a cross-section, the simultaneous injection of the two components, that is, the EVOH component for the core and the polyolefin component to be wrapped around it.
  • Figure 1 shows the gas-tight sprayed pourer after leaving the injection mold.
  • the nozzle 1 closing screen gate 3 with injection pin 6 is punched away later and then this spout with its radially outwardly projecting, cantilevered flange 2 not only liquid-tight, but also be welded completely gas-tight with a packing material. Instead of such Schirmangusses 3 can occur any other Angussform.
  • the packing material is provided with a hole and the spout is pushed through this hole so that the spout and the packing material touch on the visible here top of the projection 2. On this projection 2 can be seen two raised, the nozzle 1 circumferential grooves 4.
  • the composite material is paper or board webs coated with plastic, such as polyethylene or aluminum, which in this case are completely gas-tight.
  • the cardboard composite packings to be fitted with such pourers serve, for example, for the packaging of milk, fruit juices, all kinds of drinks or generally liquids from both the food and the non-food sector.
  • the spouts can also be used on composite packages in which bulk goods such as sugar, semolina, rice or all kinds of chemicals and the like are stored or packaged. Common volumes of such packages range from 2OcI to 2 liters and more.
  • the spouts often have an external thread 8, as shown here, so that a threaded cap can be screwed onto this socket 1. Between the cap and the neck a film with gas barrier effect is sealed, so that the clear opening of the nozzle is also oxygen-tight. Alternatively, it is conceivable that the cap has also incorporated a barrier and the seal between the cap and neck is designed so high quality that no oxygen can penetrate. In both variants, the surface 5 closing off the nozzle at the top must have its edges absolutely defined. Therefore, the Schirmanguss 3 is arranged on the inside of the nozzle. The breaking point, which results from the shearing off of the screen gate 3, can thus not adversely affect the sealing function between the nozzle and the film or cap.
  • sprue 3 shows the internal structure of a finished spout based on a cross section. As you can see here, both the entire inside as well as the entire. Outside of the spout from a continuous layer executed. It is, for example, a polyolefin. Between the outer and inner polyolefin layers 9, a core layer 10 is enclosed, and this is made of a sprayable, gas-tight barrier material, for example of ethylene-vinyl alcohol copolymer (EVOH).
  • EVOH ethylene-vinyl alcohol copolymer
  • the screen sprue 3 In order to be able to inject these spouts, the screen sprue 3 must also be produced, as becomes clear in the course of the description of the method. This Schirmanguss 3 is of course punched away, which can still happen in the form, or even after demolding.
  • the inner edge of the upper nozzle edge is designed brow-free, the sprue can be easily set back from this upper edge of the socket
  • the pourer shows the pourer during its formation or its cavity in the injection mold in a cross-section, specifically to describe a first variant of the spraying process.
  • the outer component that is, the polyolefin 9
  • the nozzle 1 of the pourer is only partially filled with the polyolefin 9.
  • the curing of the plastic on the walls of the mold cavity begins immediately, while the middle region remains soft for a little longer.
  • the hardening or already hardened areas were marked with dots in the drawing.
  • a second component 10 of gas-tight barrier material such as ethylene-vinyl alcohol copolymer (EVOH) is injected, precisely the amount necessary for the formation of a core layer, as shown in Figure 5.
  • This second component 10 is hatched in another direction. Behind her again polyolefin is injected, which then presses the barrier material 10 in front of him. Due to the different consistencies and viscosities of the components 9, 10, the EVOH component 10 penetrates into the central, still soft region of the polyolefin 9 and displaces it out of this region, as indicated by the arrows.
  • the EVOH component flows down, and then into flange 2, while the central, still soft portion of the already injected component flows upwardly on either side of the incoming EVOH component 10.
  • the polyolefin fills in particular the outermost layer and the thread turns 8. The process continues until the layer builds up as shown in FIG.
  • FIG. 7 shows a second production variant.
  • the spout is shown in a cross-section, with the two components 9, 10 being injected in parallel, that is to say the gas-tight component 10, for example EVOH, for the core and the polyolefin component 9 to be circumscribed.
  • the gas-tight component 10 for example EVOH
  • the core for example EVOH
  • the polyolefin component 9 for example EVOH
  • three associated annular nozzles or annularly arranged nozzle Ensembles already in the inflowing streams of material separate layers 11, 12,13.
  • the material flow of each component is individually controllable.
  • pure polyolefin component is also injected, so that an existing upper edge of the polyolefin 5 of the nozzle 1 is formed and also the Schirmanguss 3 is filled with Polyoelfin. This Schirmanguss 3 is punched away at the end along the neck in nenwand, whereby the upper edge 5 of the nozzle 1 is formed by concerns on a

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Cartons (AREA)
  • Closures For Containers (AREA)

Abstract

La présente invention concerne un dispositif de coulée étanche à l'oxygène réalisé avec un procédé de co-injection. Sur toute sa section, c.-à-d. sur la section de la tubulure (1) comme sur la section de la bride (2) qui dépasse de la tubulure, se trouve une couche centrale (10) en matière plastique à barrière gazeuse, qui est entourée en continu de tous côtés par une polyoléfine (9), et qui assure l'étanchéité absolue à l'oxygène.
PCT/CH2006/000337 2005-07-08 2006-06-22 Dispositif de coulee etanche a l'oxygene comprenant une tubulure et une bride, destine a des emballages de carton composites WO2007006163A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH11412005 2005-07-08
CH1141/05 2005-07-08

Publications (1)

Publication Number Publication Date
WO2007006163A1 true WO2007006163A1 (fr) 2007-01-18

Family

ID=35427433

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2006/000337 WO2007006163A1 (fr) 2005-07-08 2006-06-22 Dispositif de coulee etanche a l'oxygene comprenant une tubulure et une bride, destine a des emballages de carton composites

Country Status (2)

Country Link
TW (1) TW200709997A (fr)
WO (1) WO2007006163A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110217496A1 (en) * 2010-03-08 2011-09-08 Kortec, Inc. Method of molding multi-layer polymeric articles having control over the breakthrough of the core layer
WO2012009656A1 (fr) * 2010-07-16 2012-01-19 Kortec, Inc. Imperméabilité au gaz améliorée pour contenants moulés par injection
JP2012071441A (ja) * 2010-09-28 2012-04-12 Mikasa Sangyo Kk 注出具の製造方法及びその注出具
US8435434B1 (en) 2011-10-21 2013-05-07 Kortec, Inc. Non-symmetric multiple layer injection molded products and methods
US8801991B2 (en) 2010-11-24 2014-08-12 Kortec, Inc. Heat-seal failure prevention method and article
WO2015125071A1 (fr) * 2014-02-24 2015-08-27 Guala Pack S.P.A. Bec imperméable à l'oxygène pour poche souple
EP3180258A4 (fr) * 2014-08-14 2018-03-21 Scholle Corporation Bec barrière pour un sac flexible et sac flexible comprenant un bec barrière

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61232162A (ja) * 1985-04-09 1986-10-16 東洋製罐株式会社 多層プラスチツク・キヤツプ
US5110040A (en) * 1991-04-30 1992-05-05 Kalberer Roderick W Pour spout construction and method
US6305563B1 (en) * 1999-01-12 2001-10-23 Aptargroup, Inc, One-piece dispensing structure and method and apparatus for making same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61232162A (ja) * 1985-04-09 1986-10-16 東洋製罐株式会社 多層プラスチツク・キヤツプ
US5110040A (en) * 1991-04-30 1992-05-05 Kalberer Roderick W Pour spout construction and method
US6305563B1 (en) * 1999-01-12 2001-10-23 Aptargroup, Inc, One-piece dispensing structure and method and apparatus for making same

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9409333B2 (en) 2010-03-08 2016-08-09 Kortec, Inc. Methods of molding multi-layer polymeric articles having control over the breakthrough of the core layer
CN102791459B (zh) * 2010-03-08 2016-02-24 考泰克公司 控制芯层的突破的成型多层聚合物制品的方法
US10213944B2 (en) 2010-03-08 2019-02-26 Milacron Llc Methods of molding multi-layer polymeric articles having control over the breakthrough of the core layer
CN102791459A (zh) * 2010-03-08 2012-11-21 考泰克公司 控制芯层的突破的成型多层聚合物制品的方法
WO2011112613A1 (fr) * 2010-03-08 2011-09-15 Kortec, Inc. Procédés de moulage d'articles polymères multicouches commandant la percée de la couche centrale
US20110217496A1 (en) * 2010-03-08 2011-09-08 Kortec, Inc. Method of molding multi-layer polymeric articles having control over the breakthrough of the core layer
US9227349B2 (en) 2010-07-16 2016-01-05 Kortec, Inc. Method of molding a multi-layer article
WO2012009656A1 (fr) * 2010-07-16 2012-01-19 Kortec, Inc. Imperméabilité au gaz améliorée pour contenants moulés par injection
JP2012071441A (ja) * 2010-09-28 2012-04-12 Mikasa Sangyo Kk 注出具の製造方法及びその注出具
US9592652B2 (en) 2010-11-24 2017-03-14 Milacron Llc Heat-seal failure prevention apparatus
US8801991B2 (en) 2010-11-24 2014-08-12 Kortec, Inc. Heat-seal failure prevention method and article
US8435434B1 (en) 2011-10-21 2013-05-07 Kortec, Inc. Non-symmetric multiple layer injection molded products and methods
US9493269B2 (en) 2011-10-21 2016-11-15 Milacron Llc Non-symmetric multiple layer injection molded products and methods
US8491290B2 (en) 2011-10-21 2013-07-23 Kortec, Inc. Apparatus for producing non-symmetric multiple layer injection molded products
US9114906B2 (en) 2011-10-21 2015-08-25 Kortec, Inc. Non-symmetric multiple layer injection molded products and methods
US11046505B2 (en) 2014-02-24 2021-06-29 Guala Pack S.P.A. Oxygen impermeable spout for a flexible pouch
WO2015125071A1 (fr) * 2014-02-24 2015-08-27 Guala Pack S.P.A. Bec imperméable à l'oxygène pour poche souple
EP3180258A4 (fr) * 2014-08-14 2018-03-21 Scholle Corporation Bec barrière pour un sac flexible et sac flexible comprenant un bec barrière

Also Published As

Publication number Publication date
TW200709997A (en) 2007-03-16

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