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EP3063079A1 - Bec verseur en matière plastique pour emballages en sachets à fond plat, emballage en sachet à fond plat, ainsi que procédé de fabrication - Google Patents

Bec verseur en matière plastique pour emballages en sachets à fond plat, emballage en sachet à fond plat, ainsi que procédé de fabrication

Info

Publication number
EP3063079A1
EP3063079A1 EP14786459.9A EP14786459A EP3063079A1 EP 3063079 A1 EP3063079 A1 EP 3063079A1 EP 14786459 A EP14786459 A EP 14786459A EP 3063079 A1 EP3063079 A1 EP 3063079A1
Authority
EP
European Patent Office
Prior art keywords
plastic
sealing zone
spout
barrier layer
pouring pipe
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.)
Withdrawn
Application number
EP14786459.9A
Other languages
German (de)
English (en)
Inventor
Helmut Spaeter
Uwe STOEHR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cavonic GmbH
Plasma Electronic GmbH
Waldorf Technik GmbH and Co KG
Original Assignee
Cavonic GmbH
Plasma Electronic GmbH
Waldorf Technik GmbH and Co KG
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 Cavonic GmbH, Plasma Electronic GmbH, Waldorf Technik GmbH and Co KG filed Critical Cavonic GmbH
Publication of EP3063079A1 publication Critical patent/EP3063079A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package 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
    • B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52—Details
    • B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/583—Opening or contents-removing devices added or incorporated during package manufacture the non-integral spout having an elongate cross-sectional shape, e.g. canoe or boat shaped

Definitions

  • the invention relates to a, in particular as a plastic injection molded part, preferably (apart from an optional, integrated o- or separate closure) one-piece, plastic pourer (Spout) for stand-up pouches, especially for beverages according to the preamble of claim 1 and a method for its production ge According to the preamble of claim 10. Furthermore, the invention relates to a stand-up pouch with such a spout and a method for producing the stand bag according to the preamble of claim 17. Stand-up pouches are well known as film packaging containers for beverages.
  • stand-up pouches comprise a so-called spout (plastic pourer), which is sealed to the stand-up pouch film, so that the plastic pourer is enclosed on all sides by the stand-up pouch film.
  • the plastic pourer comprises an integrally molded pouring spout, which can be closed on the outside of the stand-up bag with a closure, usually a screw cap or a sealed seal.
  • stand-up pouch films usually have a barrier layer, for example of aluminum. Vulnerability in terms of gas tightness are the plastic spouts (spouts), which are usually used without a barrier layer.
  • JP 2009-0461 66 A This problem has already been described in JP 2009-0461 66 A.
  • a vacuum is applied to the plastic pourer.
  • placed barrier layer of SiO x wherein the barrier layer according to the teaching of the document to improve the feel should not be located on the outside of the plastic pourer. Therefore, the Japanese publication proposes a multi-part design of the plastic pourer, wherein a main part comprising a spout tube provided on its outer side with the barrier layer and then the barrier layer is protected by another tubular member which is pushed onto the barrier layer of the main part.
  • the barrier layer is not on the outside of the finished plastic pourer, but is sandwiched between two plastic layers, with an inner of these plastic layers, namely the spout of the main part forming plastic layer forms the uncoated inner surface of the spout and directly with the drink during pouring comes into contact.
  • plastic packaging containers are formed by injection molding, deep-drawing and / or blow molding. It is also known from the prior art to provide sealing zones on the plastic packaging containers, to which sealing means, in particular in the form of sealing films, are sealed with a sealing material.
  • the plastic packaging container has a barrier layer to increase the für Dispersr Sign against moisture and / or gases.
  • a humidity- or oxygen-sensitive filling material in particular a food
  • the plastic packaging container has a barrier layer to increase the für Dispersr Sign against moisture and / or gases.
  • Such vacuum applied in the vacuum Layers are described for example in EP 1 048 746 A1 or WO2009 / 030425 A1.
  • a disadvantage of the known barrier layers is that conventional sealing materials adhere poorly to these, which can lead to unwanted detachment of sealing foils or other closure means which are intended for sealing to the sealing zones, which may be due to such disadvantages completely on such a coating is waived.
  • a plastic pourer (Spout) is known, whose spout tube is provided on the inner circumference with a barrier layer produced in vacuum.
  • the document is silent. If the sealing zone is not masked during the vapor deposition with the barrier layer, it is to be assumed that the sealability is poor, since the barrier layer then covers the surface of the sealing zone and thus impedes or hampers the sealing process.
  • US 2009/0139993 A1 discloses a plastic spout not provided with a barrier layer (Spout). The publication discloses the provision of a rough surface of the sealing zone - barrier layer-related sealing problems are not lack of barrier layer. The document is silent about the condition of the surface of the spout's spout.
  • the present invention seeks to provide a plastic pourer (Spout) for stand-up pouches and a method for its production, wherein the plastic pourer is to be characterized by a barrier layer, which is optimally protected against damage, without the emergency to form the plastic pourer as in the art in several parts. Furthermore, the object is to provide a stand-up pouch with a correspondingly improved plastic pourer and a method for producing a suitably improved bag.
  • the invention is based on the idea to provide the plastic pouring spout of the preferably one-piece plastic spout at least in sections, preferably axially throughout, with a preferably generated in vacuum barrier layer, so that the barrier layer or an optional coating layer directly limits the fluid channel on its inner circumference
  • the beverage during pouring can come either in direct contact with the barrier layer or an optional lacquer layer, and it is particularly preferred if it is dispensed with the aforementioned lacquer layer.
  • the barrier layer is present Protected damage, which is advantageous or indicated insofar as that plastic pourer are usually processed or transported as bulk material and thus it can lead to abrasion of any outer barrier layer.
  • the barrier layer according to the invention is not sandwiched between two components but is located on the inner periphery of the spout, either in direct contact with the beverage or at least in indirect contact, if the aforementioned optional varnish layer were to be provided, which is even further preferably not the case.
  • the inventive provision of the barrier layer on the inner periphery of the, preferably one-piece spout (spout) is not trivial, since the spouts of interest here have a very unfavorable length / diameter ratio of> 1, preferably> 2 for a vacuum barrier coating.
  • the length of the spout is greater than the diameter (inner diameter) of, preferably at least innenzylindrischen spout, whereby the at least one coating gas, in particular a precursor gas can not penetrate sufficiently deep into the spout.
  • the surface, in particular the majority of the surface, of the sealing zone of the spout has a higher average roughness than the inner surface, preferably as the majority of the inner surface of the (plastic) spout and that the surface of the sealing zone has a medium Surface roughness of at least 200nm.
  • the term "majority” is to be understood in each case as an area fraction of more than 50% and surface roughness as the average roughness R a of the surface measured in accordance with DIN EN ISO 4288: 1998.
  • the roughness values refer, unless otherwise stated, to the uncoated state of the plastic pourer, ie to the state before the coating. th or on the roughness of the surface of the plastic packaging container without barrier layer.
  • DIN EN ISO 4288: 1998 to determine the roughness values, any waviness of the surface is filtered in the usual way, for example as described in DIN EN ISO 1562: 1998-09.
  • the sealing zone is the region of the plastic pourer which is suitable and intended to be sealed with the stand-up pouch film, in particular a sealing film, by a sealing material, in particular a varnish system or polyethylene or polypropylene.
  • a sealing material in particular a varnish system or polyethylene or polypropylene.
  • the sealing zone extends along two opposite sides of the plastic pourer, so that the pourer can be sandwiched or sandwiched either between two stand-up pouches or two edge sides of a folded stand-up pouch, such that the pouring tube exposes the pouring tube Standing bag overhangs outwards.
  • the sealing zone is located laterally on a thickened region of the spout, which is surmounted by the spout.
  • the sealing material may be applied to the stand-up pouch film or may be an integrated component, in particular by forming the stand-up pouch film as a laminate film and / or separately applied to the sealing zone and / or the stand-up pouch film prior to the sealing step.
  • the roughness comparison is to be performed between the sealing zone and the inner surface of the spout to be coated.
  • the surface of the sealing zone is preferred for better sealability with a sealing material, preferably in an area fraction of at least 50%, with a higher average roughness than the average surface roughness, preferably of at least 50% area fraction of the inner surface of the cavity to produce.
  • the roughness of the sealing zone is higher than the roughness of the other surface to be coated, in particular the inner surface and / or the outer surface.
  • the measurement of surface roughness is preferably performed on a plastic pourer not yet coated with a barrier layer.
  • the measurement is also possible on the spout provided with the barrier layer, since the barrier layer rests against the rough surface of the sealing zone and is also very thin. Therefore, if necessary, a measurement can also be carried out on the coated plastic pourer, in the event that, for example for the detection of an injury, an uncoated plastic pourer is not available.
  • the formation of the surface roughness according to the invention after coating the sealing zone ensures that the barrier layer in the sealing zone during sealing of the stand-up pouch film by a common sealing process, in particular acting surface pressure perpendicular to the surface and / or acting on the barrier layer Temperature action, at least partially broken, whereby the sealing material comes into direct contact with the plastic pourer, so the barrier layer does not completely separate the sealing material from the plastic material of the plastic pourer, which improves the overall sealability.
  • the break-up effect can be explained, inter alia, by applying the barrier layer so thinly that due to the roughness the resulting layer thickness is not homogeneous and / or the layer does not cover the complete surface of the sealing zone. covers. At the points with a thinner layer, this can be broken up by the forces acting on the seal. The thin areas thus act as predetermined breaking points. Overall, the seal material can come into direct contact with the plastic material of the spouts by the breaking up.
  • the single- or multi-layer barrier layer is formed so that it forms a barrier device against gas and / or moisture.
  • the spout is preferably produced in such a way that the sealing zone on the inside and / or outside of the spout extends circumferentially closed around the spout, in particular a thickened region, wherein the thickened region preferably thins to two opposite sides.
  • the plastic spouts must therefore be arranged in a vacuum coating chamber such that at least one coating gas, in particular a gas mixture, can flow into the spout, preferably one of the openings of the spout in FIG Direction of a gas inlet is aligned in the vacuum chamber.
  • a longitudinal central axis of the preferably cylindrical spout extending between an inlet opening, in particular a center of the inlet opening and an outlet opening, in particular a center of the outlet opening of the spout, at least approximately parallel to a main flow direction of the coating gas in the vacuum chamber between a gas inlet and a gas - let it be aligned.
  • the main flow direction here is preferably a direct, imaginary connecting line between the gas inlet, in particular a center of the gas inlet, and the outlet opening, in particular a center of the outlet opening. Ideally, therefore, the angle of the longitudinal center axis of the spout to the main flow direction is 0 °.
  • Particularly good coating results are achieved if a thickened end of the spout having the sealing zone (if appropriate at an angle specified above) is oriented in the direction of the gas inlet.
  • the coating gas flows through the spout tube in an above-described arrangement, preferably at least approximately parallel to the main flow direction in the chamber, thereby providing an axially continuous one and circumferentially closed coating can be obtained in the interior of the spout.
  • a coating of spouts with an integrated, for example molded-on closure ie a coating of spouts already provided with a closure during the coating, whereby the lowest possible orientation, ie an axial depth, is achieved by the aforementioned orientation towards a gas inlet with an inlet opening of the spout extending far into the spout Barrier layer can be obtained within the spout.
  • the coating with the barrier layer extends over 50%, preferably over at least 60%, of the length of the spout into it.
  • the barrier layer provided on the inner surface of the spout made of plastic forms an innermost layer of the spout, so as to be in direct contact with the fluid accommodated in the stand-up pouch.
  • the innermost layer is not formed by the barrier layer but by a protective lacquer layer which then forms the innermost surface.
  • the ratio between the length of the spout and the spout inside diameter is> 1.
  • the ratio of a value range between 1, 1 and 5.0 is even more preferably selected between 2.0 and 4.0.
  • the spout inside diameter of the preferably cylindrical spout is selected between 5 mm and 18 mm, preferably between 7 mm and 15 mm, and / or the length of the spout consists of a range between 20 mm and 50 mm, preferably between 22 mm and 40 mm.
  • the sealing zone is preferably prepared such that it has an average surface roughness R a according to DIN EN ISO 4288: 1998 of at least 200 nm before coating in at least 60%, particularly preferably at least 75%, more preferably at least 99.9%.
  • the surface roughness R a is preferably selected from a value range between 200 nm and 2500 nm, in particular between 400 nm and 2000 nm.
  • the inner surface of the spout is made to have, preferably in at least 60%, more preferably at least 75%, more preferably at least 99.9%, an average surface roughness of less than 200 nm, preferably less than 1 50 nm preferably less than 100 nm, preferably less than 50 nm.
  • the surface of the sealing zone at least in sections, a slope of 1/6 or greater.
  • a slope of e.g. 1/6 means that the surface profile increases or decreases by 1 mm (ie by 1/6 of the length) over a measuring length of 6 mm.
  • the connecting straight line between two adjacent measuring points has a gradient of 1/6 or greater.
  • the length along the measuring direction is the abscissa and the measured height is the ordinate.
  • the surface structure is preferably such that in the case of a measurement having a constant measuring interval in the range from 0.1 ⁇ to 1 ⁇ (a measuring interval of, for example, 1 ⁇ means that every 1 ⁇ is a measuring value is recorded), between a plurality of respectively adjacent measuring points a slope of over 1/6 is present, preferably at least 6% of all adjacent measuring points.
  • a measuring interval of, for example, 1 ⁇ means that every 1 ⁇ is a measuring value is recorded
  • the surface height should be recorded at equidistant intervals along a measuring direction, preferably at a minimum length of 4.8 mm.
  • the surface profile is preferably taken with a stylus device.
  • the radius of the probe tip is preferably less than or equal to 2.5 m.
  • the profile thus measured, or the measured values obtained from the measurement is filtered in accordance with the standard DIN EN ISO 1 1562: 1998. This gives the roughness profile of the surface.
  • the term "profile” refers to the filtered profile, ie the roughness profile.
  • the surface When meeting the aforementioned requirements for steepness, the surface has particularly good sealing properties.
  • injection molding is suitable as a production method for the plastic packaging container, wherein the desired roughness of the surfaces, in particular the sealing zone, can be achieved, for example, by appropriate design of the negative mold with unevenness and / or by a downstream abrading and / or abrading process.
  • Preference is given to a mechanical processing to realize the roughness before coating with the barrier layer - a subsequent mechanical, preferably abrasive, machining under at least Partial removal of the barrier layer in the sealing zone is also feasible.
  • EDM electrochemical erosion
  • the sealing zone and the inner surface of the spout are coated with a barrier layer against the passage of at least one chemical compound and / or element, which is more preferably a functional coating resistant to the passage of moisture and / or gases and / or Interactions between contents and the plastic material of the plastic pourer protects.
  • the coating is preferably selected such that it reduces migration phenomena from the packaged product into the at least one plastic layer.
  • the barrier layer is additionally or alternatively designed such that with this the entry of chemical substances and / or elements of the at least one plastic layer is minimized in the packaged product.
  • the barrier layer has a penetration barrier action against solvents.
  • Possible coating methods that can be used in a vacuum chamber are in particular CVD (Chemical Vapor Deposition) methods such as plasma-enhanced chemical vapor deposition (PECVD) or PVD (Physical Vapor Deposition) methods such as sputtering into consideration.
  • CVD Chemical Vapor Deposition
  • PECVD plasma-enhanced chemical vapor deposition
  • PVD Physical Vapor Deposition
  • Polyethylene PE
  • polypropylene PP
  • COC cycloolefin copolymers
  • COP cycloolefin polymer
  • PVC polyvinyl chloride
  • PET polyethylene terephthalate
  • PA Polyamide
  • PS polysyrene
  • plastic pourers made of compostable polymers especially polymers based on renewable raw materials, such as starch-based polymers (strong blends, PLA (polyazide), polyesters of the PAH (polyhydroxyalkanoate) type, eg PHB (polyhydroxybutyrate), PHV (polyhydroxyvalerate) ,
  • Cellulosic materials made from chemically modified cellulose are in particular specific polymers, eg based on PDO (biopropanediol), specific polyamides, eg made of castor oil, and polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) based on bioethanol from eg sugarcane, as well as specific, made of crude oil or natural gas synthetic polyester, or formed from the materials mentioned laminates are formed.
  • the barrier layer in particular for injection-molded parts, preferably comprises a vacuum coating with metal oxides, in particular aluminum oxides, and / or silicon oxides because of their good penetration barrier effects.
  • Preferred coating compositions are designed such that the barrier layer (vacuum coating) is oxidatively, nitridically or by means of a sputtering process sulfidic layer is applied.
  • a plasma CVD preferably a PECVD (plasma-enhanced chemical vapor deposition) method with a silicon precursor, for example with HMDSO (hexamethyldisiloxane) or with TMDSO (tetramethyldisiloxane), in particular with plasma pretreatment with oxygen, argon and / or nitrogen applied a ceramic layer as a coating become.
  • PECVD plasma-enhanced chemical vapor deposition
  • the coating compositions are formed so that they are a vacuum coating by sputtering or evaporation, in particular of metal oxides, especially aluminum oxides, or silicon oxides, in particular SiO x , where x is preferably a number around 2, preferably 2.0, or by plasma polymerization of organosilanes, in particular of hexamethyldisiloxane (HMDSO) and tetramethyldisiloxane (TMDSO) or by plasma polymerization of highly crosslinked hydrocarbon layers, in particular starting from ethyne on the packaging body.
  • the barrier layer usually has a thickness in the range of 50 nm to 200 nm.
  • the coating compositions may also be formed so that the coating is a carbon layer, in particular an amorphous carbon layer (English “Diamond-Like Carbon” or DLC).
  • a carbon layer in particular an amorphous carbon layer (English “Diamond-Like Carbon” or DLC).
  • amorphous carbon layers are suitable, which are subdivided according to the VDE 2840 guideline as follows:
  • Hydrogen-free amorphous carbon layers "aC” consist predominantly of sp 2 -hybridized bonds and are therefore also referred to as graphite-like carbon layers.
  • Tetrahedral hydrogen-free amorphous carbon layers "ta-C” consist of sp 3 -hybridized bonds, which is why they are equivalent to the diamond layers.
  • Metal-containing hydrogen-containing amorphous carbon layers "a-C: H: Me.” By doping with metals, a composite of an “a-C: H” matrix and metal carbides forms. Layers of this material have high wear resistance, low coefficients of friction and better adhesion of the layers. By changing the metal content, the material properties can be strongly influenced.
  • aC Modified Hydrogenated Amorphous Carbon Layers, "aC: H: X”
  • elements such as Si, O, N, F and B
  • amorphous carbon layers can be highly modified depending on the desired properties, for example silicon increases the temperature resistance in an oxygenated environment Silicon and oxygen can greatly reduce the surface tension (down to PTFE-scale values), as well as producing transparent and highly scratch-resistant layers.
  • Coating with carbon layers can also combine the advantages of high biocompatibility with increased penetration barrier action against gases and / or moisture even when ingesting food.
  • Part of the method may also be filling the plastic packaging container with at least one filling material, the sealing means being sealed to the at least one sealing zone before or after at least one of the chambers has been filled with filling material.
  • the sealing can be done by a heat sealing process and / or by a cold sealing process.
  • sealing material all common sealing materials, for example based on polyethylene, polypropylene and / or polyurethane can be used.
  • plastic pourer to be coated is produced inline - spouts are then removed from a mold device, in particular an injection molding device, and then placed on transport means with which the plastic pourer to be coated is conveyed to coating agents and then coated there.
  • the spouts are preferably aligned horizontally during coating, ie the longitudinal central axis of the spout extends in a horizontal direction.
  • Fig. 1 to 3 different, partially sectioned views of a
  • Plastic pourer (Spout) Figure 4: an arrangement of plastic pourers in a vacuum chamber for applying a barrier layer
  • FIG. 5 shows a representation of a measuring points obtained from a measurement of a profile of a surface profile.
  • FIGS. 1 to 3 A plastic pourer (Spout) for integration or for sealing in a stand-up pouch is shown in FIGS. 1 to 3.
  • the plastic pourer is integrally formed, in this case as a plastic injection-molded part, and comprises a thickened section 2 surrounded by a sealing zone 3 or enclosing a sealing zone 3 in its entirety.
  • the thickened portion 2 is penetrated by a spout 4, or in other words, the spout comprises a spout portion which is partially formed by the thickened portion 2 and which projects beyond the thickened portion 2 to the outside.
  • the spout 4 has in the illustrated embodiment, an external thread 5 for fixing a closure, wherein other fixing means can be realized. Also It is conceivable that a closure molded directly, ie is formed integrally with the spout 4.
  • the plastic pourer 1, more precisely the pouring spout 4 has an inner surface 7 made of plastic, which in the example shown is fully and axially continuous on its inner circumference, i. is coated from an inlet opening 8 to an outlet opening 9 with a vacuum applied barrier layer 10, which forms an innermost layer in the embodiment shown and thus has direct contact with the fluid flowing through the spout 4.
  • a (plastic) surface 1 1 of the sealing zone 3 is provided with a barrier layer 10, which is preferably identical in construction to the barrier layer 10 within the pouring tube 4.
  • the surface 1 1 of the sealing zone 3 has an average surface roughness R a (determined according to DIN EN ISO 4288: 1998) of more than 200 nm. This roughness can be produced by using an appropriate negative mold having unevenness in an injection molding apparatus, or alternatively by mechanical post-processing of the blank after injection molding, after or preferably before coating with the barrier layer 10.
  • the surface roughness of the inner surface 7 of the spout 4 on the other hand, has an average surface roughness of less than 200 nm.
  • FIG. 4 shows a vacuum chamber 12 which is preferably used for a coating method. This comprises a gas inlet E and a gas outlet A, which are arranged opposite one another in the embodiment shown.
  • CVD Chemical Vapor DePosition
  • PECVD plasma-enhanced chemical vapor deposition
  • PVD Physical Vapor Deposition
  • the plastic pouring spouts 1 to be coated are aligned so that their central longitudinal axis 1 1 extending centrally through the spout pipe 4 extends parallel to a main flow direction of the coating gas, in particular of the coating gas mixture from the gas inlet E to the gas outlet A, so that the spout pipes 4 of the one-piece plastic pourer optimally in their Total length to be flowed through, so as to achieve an axially continuous and vollumflindliche coating on the inner surface.
  • 5 illustrates an illustration of a profile of a surface profile determined from a measurement for calculating the slope. The figure shows the measured points, each connected by connecting lines, giving a total of the measured profile.
  • the measuring points were recorded equidistantly at a distance ⁇ with a stylus instrument along the measuring direction and then filtered, preferably in accordance with DIN EN ISO 1562: 1998-09.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

L'invention concerne un bec verseur en matière plastique (1), destiné à des emballages en sachets à fond plat, en particulier des emballages de boissons, qui comprend une zone de scellage (3), servant à fixer le bec verseur en matière plastique (1) à un emballage en sachet à fond plat, et un tube verseur (4) qui possède une surface intérieure (7) ainsi qu'un orifice d'entrée (8) et un orifice de sortie (9). Le rapport entre la longueur et le diamètre du tube verseur (4) est supérieur à 1, de préférence supérieur à 2. Le bec verseur en matière plastique (1) est revêtu d'une couche barrière (10), réalisable en particulier sous vide, de préférence par un procédé de dépôt CVD ou PVD et servant à renforcer l'effet de blocage de la pénétration d'au moins un composé chimique et/ou d'au moins un élément chimique, sur la surface intérieure (7) du tube verseur (4) ainsi que sur une surface (11) de la zone de scellage (3). Selon l'invention, pour améliorer l'aptitude au scellage, la surface (11) de la zone de scellage (3) présente, notamment dans une partie de sa surface au moins égale à 50%, une rugosité superficielle moyenne Ra suivant DIN EN ISO 4288:1998 qui est supérieure à la rugosité superficielle moyenne Ra suivant DIN EN ISO 4288:1998, de préférence à hauteur d'au moins 50% de la partie de la surface intérieure (7) du tube verseur (4), et la surface de la zone de scellage (3) présente une rugosité superficielle moyenne Ra suivant DIN EN ISO 4288:1998 au moins égale à 200 nm Ra.
EP14786459.9A 2013-10-29 2014-10-02 Bec verseur en matière plastique pour emballages en sachets à fond plat, emballage en sachet à fond plat, ainsi que procédé de fabrication Withdrawn EP3063079A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013111893 2013-10-29
PCT/EP2014/071126 WO2015062806A1 (fr) 2013-10-29 2014-10-02 Bec verseur en matière plastique pour emballages en sachets à fond plat, emballage en sachet à fond plat, ainsi que procédé de fabrication

Publications (1)

Publication Number Publication Date
EP3063079A1 true EP3063079A1 (fr) 2016-09-07

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EP14786459.9A Withdrawn EP3063079A1 (fr) 2013-10-29 2014-10-02 Bec verseur en matière plastique pour emballages en sachets à fond plat, emballage en sachet à fond plat, ainsi que procédé de fabrication

Country Status (2)

Country Link
EP (1) EP3063079A1 (fr)
WO (1) WO2015062806A1 (fr)

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WO2022195445A1 (fr) * 2021-03-16 2022-09-22 Winpak Ltd. Système de fermeture avec couche barrière

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AR109703A1 (es) 2016-09-27 2019-01-16 Dow Global Technologies Llc Accesorio con componente de mezcla a base de propileno y recipiente flexible con el mismo
JP2019031318A (ja) * 2017-08-09 2019-02-28 旭化成株式会社 スパウト
US20230323154A1 (en) * 2022-04-12 2023-10-12 Comotomo 2022 Inc. Adhesion between base material and resilient material layer

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