EP2022724B1 - Flexible Plastikrohre und ihr Herstellungsverfahren - Google Patents

Flexible Plastikrohre und ihr Herstellungsverfahren Download PDF

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Publication number
EP2022724B1
EP2022724B1 EP08017038A EP08017038A EP2022724B1 EP 2022724 B1 EP2022724 B1 EP 2022724B1 EP 08017038 A EP08017038 A EP 08017038A EP 08017038 A EP08017038 A EP 08017038A EP 2022724 B1 EP2022724 B1 EP 2022724B1
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EP
European Patent Office
Prior art keywords
skirt
weight
tube
flexible tube
density polyethylene
Prior art date
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Revoked
Application number
EP08017038A
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English (en)
French (fr)
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EP2022724A1 (de
Inventor
Michel Bosshardt
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.)
Albea Tubes France SAS
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Cebal SAS
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Priority to PL08017038T priority Critical patent/PL2022724T3/pl
Publication of EP2022724A1 publication Critical patent/EP2022724A1/de
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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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/10—Body construction made by uniting or interconnecting two or more components
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage

Definitions

  • the invention relates to the field of flexible plastic tubes for storing and dispensing liquid to pasty products. It relates more particularly to flexible plastic tubes of large capacity according to the preamble of claim 5, typically having a capacity greater than or equal to 150 ml.
  • a first step is to reduce the thickness of their walls.
  • Such a solution has been adopted without problem for the small capacity tubes, having a flexible skirt of small diameter.
  • a simple reduction in the thickness of the skirt or the shoulder finds its limits in the mechanical strength of the tube, in particular for tubes with a capacity greater than 150 ml, the vast majority of which have diameters greater than 40 mm, and more particularly, the problems of mechanical strength amplifying with the diameter, for the tubes of skirt diameter greater than 45 mm.
  • the rigidity of the skirt becomes insufficient and makes handling difficult both during the manufacture of the tube during its filling and use.
  • the flexible tubes have a capacity typically less than 400-500 ml, with a diameter of less than 60 mm, because beyond these dimensions, they become unmanageable and are replaced by rigid bottles.
  • a flexible tube is made by assembling two separately manufactured parts: a flexible cylindrical skirt of given length (typically 3 to 5 times the diameter) and a head comprising a neck provided with a dispensing orifice and a shoulder connecting said neck with cylindrical skirt.
  • the plastic head may be molded separately and then welded to one end of the skirt but this is advantageously molded and autogenously welded to the skirt using either an injection molding technique ( FR 1 069 414 ) is a compression molding technique of an extruded blank ( FR 1 324 471 ).
  • the cylindrical skirt can be obtained industrially in two different ways.
  • tubes intended for storing and dispensing cosmetic products it is generally obtained by extrusion or direct coextrusion of several plastics, in the form of a cylindrical hollow extrudate.
  • the tube having such a skirt is in this case called "plastic tube”.
  • a plastic strip is generally used which is shaped into a cylinder by matching (contact or superimposition) of its two longitudinal edges ( see for example US 1,007,779 ) and then longitudinal weld along these edges.
  • the tube having such a skirt - which is often made of a multilayer plastic material with a barrier layer - is in this case called "rolled tube".
  • the tube is delivered to the conditioner, the head down and the dispensing orifice closed - for example by a cap screwed onto the neck - so that it fills the tube by the open end of the tube.
  • the tubes are placed vertically, grouped and stacked.
  • the sheaves are stacked on one another forming a large number of layers whose thickness corresponds to the axial length of the tube, which typically leads to Stacks of about fifteen layers for truck transport.
  • the tube is filled, its open end is flattened so as to perform a weld which, by the meeting of wall portions facing each other following the flattening, seals the product thus conditioned (so-called transversal or final weld).
  • the diameter of the skirt is typically between 40 mm and 60 mm
  • the thickness of the skirt of the prior art is systematically greater than 0.5 mm, that it is (co ) extruded, rolled or obtained by extrusion blow molding.
  • the embodiment of the skirt it must undergo a large number of manipulations until the filled tube has been sealed by the final weld.
  • the tube Upon arriving at a manufacturing or forming station, the tube is driven from a holding device mounted on a transfer chain (for example a pin, a nacelle or a mandrel) to a mandrel on which it is fitted most of time without play and even with a slight tightening.
  • a transfer chain for example a pin, a nacelle or a mandrel
  • the operation is complete, it is extracted from the mandrel and directed to a new holding device associated with another transfer chain to drive it to another manufacturing station.
  • Flexible tubes that have skirts large diameter do not have sufficient rigidity if the thickness of said skirts is less than 0.5 mm. They are exposed, particularly at their open end, to a high risk of folding either during the fitting on the mandrel, or during the extraction of the mandrel. To limit this risk, it could increase the clearance between the skirt and the mandrel but this would result in less good maintenance of the skirt during the manufacturing operation or shaping and could result in insufficient quality: less accuracy the positioning of the head on the skirt which can lead to a defect of welding between the head and the skirt, bad plating of the skirt on the mandrel causing printing defects (offset printing or flexography on cylindrical wall of tubular bodies), etc.
  • the stacked tubes located in the lower layers must support the weight of the sheaves stacked above and they are often deteriorated at the open end of their skirt if it does not have the desired rigidity.
  • the open end of the tube has a geometry which is less repetitive since the thickness is small (greater influence of the residual stresses on the shape of the free end of the skirt), which leads to difficulties when automatically filling the tube.
  • the bottles are made in one piece by extrusion-blow molding: one extrudes a thick tube that is clamped away from the die (obtaining a parison) and then inflates the inside of the parison by sending air under low pressure through the axis of the die, the wall of the parison tapering and coming to press against the walls of a mold that gives the final shape of the bottle.
  • the patent US 6,082,563 (WELLA) describes a manufacturing process by which partially modifies the plastic material constituting the wall of the parison by adding blowing agents.
  • the blowing agents are introduced into an intermediate layer during coextrusion.
  • the thickness of the expanded layer is, after extrusion and before blowing, equal to or greater than 3 mm. After blowing it is of the order of 500 microns, that is to say close to the thickness of a flexible tube skirt.
  • GB Patent 2,337,035 discloses a container comprising a dispensing head and a plastic skirt according to the preamble of claim 5, which may comprise HDPE with a density greater than 0.953 g / cm 3 . If his skirt may look thin compared to the head, conversely, the head appears thick and disproportionately large compared to the skirt, so that such a configuration does not seem to meet the objective set in the context of the present invention, namely significantly reduce the weight of the tubes.
  • the Applicant has sought to obtain a flexible tube of great capacity as light as possible, which has a cylindrical skirt as strong and rigid as that of standard tubes, while offering the user a comfortable grip and resistance to stress cracking comparable to that of standard tubes.
  • the goal is to significantly reduce (at least 30%) the weight of the tubes while maintaining an acceptable mechanical behavior compatible with the constraints of manufacture and with its use by the consumer.
  • these tubes are mainly intended for the cosmetics market, they must also have equivalent compatibility to these products, in particular to guarantee a low permeability to liquids (water, alcohols, oils and other fatty substances, etc.). ), and this low permeability to liquids should result in limited weight losses. It is also desirable that they have an acceptable permeability to water vapor and flavorings.
  • This method incorporates the conventional steps of manufacturing a plastic tube, the skirt of which comes from the cutting of an extruded sleeve, but this sleeve is particularly thin and comprises a plastic material different from that of plastic tubes of the prior art.
  • the sleeve is obtained by extrusion of a mixture PE.HD + PE.BD (more than half being PE.BDL) or by co-extrusion of several co-axial layers, PE.HD, PE.BD (more than half being PE.BDL), or layers of mixtures PE.HD + PE.BD.
  • the plastic tubes thus produced offer the best characteristics (vis-à-vis all the constraints of manufacture and use) when the sleeve has been made. with more than 90% by weight of PE.HD and less than 10% by weight of PE.BDL.
  • Another object of the invention is a flexible tube having a dispensing head and a cylindrical skirt of plastic or metalloplastic material, of diameter greater than 44 mm, more particularly greater than 49 mm, characterized in that said cylindrical skirt has a thickness between 0.2 mm and 0.4 mm, preferably between 0.25 mm and 0.35 mm, in that it comprises high-density polyethylene (HDPE) with a density of between 0.935 g / cm 3 and 0.97 g / cm 3, preferably greater than 0.945 g / cm 3, in a weight proportion greater than 55%, preferably 70%.
  • HDPE high-density polyethylene
  • the cylindrical skirt also comprises low density polyethylene (PE.BD) with a specific gravity of between 0.86 g / cm3 and 0.93 g / cm3, in a proportion by weight of less than 45%, preferably 30%, and of which more than 50%, preferably more than 90% by weight, is a linear PE.BD (PE.BDL).
  • PE.BD low density polyethylene
  • PE.BDL linear PE.BD
  • the tube according to the invention is a plastic tube or a rolled tube having a head provided with a dispensing orifice and a cylindrical skirt of large diameter, typically greater than 44 mm.
  • the head generally includes a neck that surrounds the dispensing orifice and a shoulder that connects the neck to the skirt.
  • the skirt is cylindrical but its section is not necessarily circular. In fact, the tube is here described in its filling configuration, before completion of the final transversal weld which seals the packaged product.
  • the skirt may have an orthogonal circular or elliptical section or any other shape (this is imposed by the periphery of the shoulder which is fixed on the end of the skirt) but, during the manufacture of the tube, it is usually fitted on a cylindrical sleeve circular section and that is why we refer here to a diameter. It goes without saying that for a skirt of non-circular section, it is its perimeter which must be greater than ⁇ * 44 is about 138 mm. For an elliptical skirt, if a is the half major axis and b is the half minor axis, 2 ⁇ at 2 + b 2 is greater than 44 mm.
  • flexible tubes have skirts composed predominantly - or entirely - of PE.BD.
  • a tube according to the invention having the same diameter as a traditional tube has a thinner skirt but composed predominantly - or in full - of PE.HD.
  • the skirt may be made of a single material, for example a blend resulting from a mixture according to the invention of PE.HD and PE.BD, the major part of which is a Linear PE.BD.
  • PE.BDL and the percentage of PE.HD within such a blend can be determined for example using two complementary techniques: Fourier transform infrared spectroscopy (FTIR), for example using a spectrometer FTIR Nicolet 510P and Differential Scanning Calorimetry, for example using a complete Perkin Elmer DSC 7 analysis system, this method can itself be implemented in a conventional manner (up-down cycle - temperature rise), or, when necessary, according to the SIST (Stepwise Isothermal Segregation Technique.
  • FTIR Fourier transform infrared spectroscopy
  • FTIR spectrometer
  • Differential Scanning Calorimetry for example using a complete Perkin Elmer DSC 7 analysis system
  • the skirt, laminated or coextruded may also be made of a multilayer material comprising PE.HD layers, PE.BD layers, most of which is linear PE.BD, and / or PE blend layers. HD + PE.BD.
  • the skirt may have, due to its lower thickness, a resistance to radial penetration identical or lower than that of a skirt of the prior art while by presenting, despite this lower thickness, an equal or better resistance to buckling and bending under the effect of the same compressive axial force.
  • the PE.BD was supposed to be the only material capable of satisfy, provided however that it is in the form of a sufficiently thick layer.
  • the use of a material more rigid than PE.BD to compensate for the loss of stiffness due to thinning is not obvious. Indeed, it is known from experience that the use of more rigid materials leads to a loss of ergonomics of use.
  • the grip of the tube is indeed less easy, the tube is not flexible enough (it is less easy to extract the product by simply applying pressure on the wall of the skirt) or too elastic behavior: the product just out of the orifice, is reabsorbed inside the tube as soon as the pressure on the skirt decreases.
  • Such a property is illustrated by the magnitude of the elastic recovery of the material after plastic deformation by folding: the greater this return, the greater the "shape memory” is important and degrades the ergonomics of use.
  • This shape memory is often characterized by the angle obtained after folding and elastic return of a band of constant thickness: the larger the angle, the higher the shape memory is important; conversely, the weaker the angle, the better is its ability to keep the new form, translated by the Anglo-Saxon term of "dead fold".
  • the metal tubes have a very good ability to wrinkle while the plastic tubes have a wrinkle ability generally poor or poor.
  • the Applicant has found that, thanks to the significant decrease in the thickness of its wall, the tube has a better property at "dead fold", that is to say a better ergonomics of use despite use of a material (PE.HD) more rigid than PE.BD.
  • the outer layers are preferably PE.HD: this results in slightly better axial buckling resistance.
  • the PE.HD outer layers are less sensitive to stress cracking.
  • the PE.HD has a liquid permeability much lower than that of PE.BD, in a ratio such that the decrease in thickness does not lead to a degradation of the liquid barrier properties (water, alcohols, oils and other fatty substances that may be contained in the cosmetic product to be packaged), which maintains the performance in terms of acceptable weight losses.
  • the liquid barrier properties water, alcohols, oils and other fatty substances that may be contained in the cosmetic product to be packaged
  • PE.BD if it exists in the skirt, is a minor constituent material, limited to 30% by weight, preferably 10%. It consists for the most part of linear PE.BDL (or PE.BDL), that is to say a polyethylene copolymer comprising nonpolar alphaolefins (such as butene1 or hexene1) whose molecules have only short side chains and regular.
  • linear PE.BD is recommended to improve on the one hand the weldability of the skirt and on the other hand the resistance to stress cracking.
  • Stress cracking is a property related to long-term behavior: by immersing the material under stress in a surfactant liquid, cracking appears after a certain time. This phenomenon, very important in the case of polyethylene, strongly depends on the surface tension exerted by the medium, the molecular weight and the morphology of the polymer. It is known that cracking occurs all the more quickly as the stress is high and that the material (polyethylene in this case) has a significant melt index (“melt index").
  • the linear PE.BDL (PE.BDL) is in a proportion by weight greater than 50%. This proportion is preferably higher as the proportion of PE.BD is important in the material of the skirt. This makes it possible to improve the weldability and resistance to stress cracking of the skirt. So, for a mixture 70% PE.HD + 30% PE.BD, the latter should preferably be more than 90% by weight of PE.BDL.
  • the plastic and laminated tubes offer the best characteristics relating to all the constraints of manufacture and use when the skirt comprises more than 90% by weight of PE .HD and less than 10% by weight of PE.BDL.
  • the flexible tube also has a lightened dispensing head to which must be attached a plug or a dispensing tip, such as a service capsule.
  • the tube head comprises a neck surrounding the dispensing orifice and a shoulder connecting said neck to the skirt and it is on said neck that is fixed that plug or this capsule-service.
  • a neck provided with a securing means such as a ratchet is preferred to a neck with a screw thread, more sensitive to stress cracking. It is thus possible to limit the thickness of the neck and the shoulder to a value typically less than 1 mm.
  • Said head is preferably made of a material which comprises high-density polyethylene (HDPE), with a density of between 0.935 g / cm 3 and 0.97 g / cm 3, preferably greater than 0.945 g / cm 3, in a proportion by weight greater than 55%, preferably 70%.
  • the head also comprises low density polyethylene (PE.BD) with a specific gravity of between 0.86 g / cm 3 and 0.93 g / cm 3, in a proportion by weight of less than 45%, preferably 30%, and more than 50%, preferably more than 90% by weight, is a linear PE.BD (PE.BDL)
  • the tube has a head composed predominantly - or entirely - of PE.HD.
  • the head may be made of a single material, for example a blend resulting from a mixture according to the invention of PE.HD and PE.BD, the major part of which is a Linear PE.BD.
  • the head can also have a multi-layer wall with layers of PE.HD and / or PE.BD, most of which is linear PE.BD, and / or mixtures PE.HD + PE.BD.
  • the head can be molded separately and then welded to one end of the skirt, but it can also be molded and welded autogenously to the skirt.
  • This multilayer head can be obtained either by co-injection according to a process such as that described in EP 1 123 241 or by compression molding a coextruded blank.
  • the head may have a neck and a shoulder less than 1mm thick.
  • a tube has a substantial saving in weight: whereas a standard tube typically weighs between 0.80 and 1.10 g per centilitre of useful volume, a tube according to the invention of the same capacity weighs between 0.55 and 0, 80 g per cl of useful volume.
  • a gain in packaging weight of the order of 30% is obtained. This gain can be further increased if one continues the effort of lightening on the cap.
  • the flexible tubes presented in this example offer a useful volume of 150 ml for the shower gel that they are intended to contain.
  • a tube of the prior art is illustrated in figure 1 .
  • a particular tube according to the invention is illustrated in figure 2 .
  • This tube can be equipped with a capsule-service.
  • the tube 110 of the prior art has a diameter D of 50 mm and an overall height (greater than H + h ) close to 175 mm. It has a skirt 120 and a dispensing head 130 provided with a neck 131 and a shoulder 132 for connecting said neck to said skirt.
  • the skirt 120 is PE.BD. It has a thickness e1 of 0.6 mm, which gives the shower gel dispenser tube a certain rigidity.
  • the head 130 is also in PE.BD.
  • the shoulder 132 has a thickness e2 of 1.1 mm.
  • the weight of the tube according to the prior art is 16.4 g.
  • the service capsule 140 comprises a base 141 intended to be fixed irreversibly on the neck 131 of the tube and a cap 142 pivoting about a hinge 143 located at the periphery of the base and the cap, the cap sealing a orifice 150 formed on the base 141 .
  • the base 141 comprises a plate 1411 , provided with the dispensing orifice and an outer lateral skirt 1410 cylindrical and configured so that it is approximately in the extension of the skirt 120 of the tube.
  • the service capsule 140 according to the prior art has a thick and rigid base.
  • the rigidity is supported by the presence of 8 radial ribs 144 , attached to the inner surface of the outer side skirt 1410 and the inner surface of the plate 1411 .
  • the cap 142 has, at the upper portion 147 of the finger grip, a wall 148 vertical.
  • the tube + capsule-service set weighs 26 g.
  • the tube 210 has a diameter D ' of close to 50 mm and an overall height ( H + h' ) close to 173 mm. It has a skirt 220 and a dispensing head 230 provided with a neck 231 of diameter approximately 20 mm and a shoulder 232 intended to connect said neck to said skirt.
  • the skirt 220 is PE.HD. It has a thickness é1 of 0.35 mm, which gives the shower gel dispenser tube a greater flexibility, acceptable by all users.
  • the head 230 is also PE.HD.
  • the shoulder 232 has a thickness e2 of 1 mm.
  • the weight of this tube is 11 g.
  • the centering studs 235 are made with a constant thickness, that is to say having a hollow towards the inside of the tube.
  • This tube is provided with a service capsule 240 made of polypropylene, with a height h equal to 22.7 mm.
  • the service capsule 240 comprises a base 241 intended to be fixed irreversibly on the neck 231 of the tube and a cap 242 pivoting about a hinge 243 located at the periphery of the base and the cap, the cap closing off a orifice 250 formed on the base 241 .
  • the cap 242 pivots around the hinge 243 when the user exerts a force in the upper part of the finger grip located on the cap.
  • the capsule-service, object of the European patent EP 1 765 685 has itself been designed to bring weight gain, so that the tube + capsule-service package weighs 16.7 g.
  • the weight of the dispensing tube has increased from 26 g to 16.7 g, a gain of nearly 36%.
  • the flexibility of the tube skirt is characterized by the value of a force necessary to obtain a certain radial depression after a certain time. The lower this value, the more flexible the tube. Moreover, by comparing the values corresponding to two different radial depressions, one can evaluate the comfort of use (of "grip") by noting the difference to the proportionality: if the value corresponding to a double radial depression is greater at double the corresponding effort, the tube opposes increasing resistance to the action of the user. The more the difference between these values is important, more the tube is difficult to empty. Conversely, if the value corresponding to a double radial depression is less than twice the corresponding effort, the tube empties easily. The greater the difference between these values, the more the tube tends to collapse abruptly, which may surprise the user with a larger output stream than expected.
  • the flexibility can be measured with standardized bending tests using the method of the support blade: a skirt half is cut in a diametral plane and then recessed at its ends on a support. The top of the arch thus formed is driven by an axial device bearing on the generatrix of the top of the arch. The value of the driving force corresponding to two given deflections is measured: for example 5 mm and 10 mm.
  • the skirts of the tubes B to D according to the invention are more flexible than the skirts of the prior art (Tube A), on the other hand that the distance to the proportionality is of the same order of magnitude (ratios between efforts of between 2.6 and 2.8 for a double depression): the tubes according to the invention are more flexible than that of the prior art while presenting a comfort of use identical.
  • the machinability of the tube is characterized by the ability of the skirt to withstand an axial compressive force.
  • the skirt is cut to a given length (80 mm in this case), one of the free ends of the sleeve thus obtained is fitted and a force distributed over the circumference is applied to the other free end, with the aid of a plateau that sinks at a constant speed in the axial direction of the sleeve.
  • the value of the compression peak is measured just before folding or buckling of the sleeve.
  • PE.BD tube of thickness 0.5 has a lot of memory (it comes back to 128 ° (for a complete memory, the angle after elastic return would be 180 °), whereas for the tube in PE.HD 0.35 thickness, the angle after elastic return is equal to only 61. It is close to the behavior of the flexible metal tube.
  • a standard (non-lowered) truck can carry 66 pallets of 50 mm diameter tubes (150 ml capacity), or about 140,000 tubes.
  • the truck carries a significantly lower load and thus saves energy, which, moreover, makes it possible to reduce the emission of carbon dioxide into the vehicle. atmosphere.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Tubes (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Claims (17)

  1. Verfahren zur Herstellung eines flexiblen Rohrs, umfassend einen zylindrischen Mantel und einen Verteilungskopf, welches wenigstens die folgenden Schritte umfasst:
    a) Extrusion einer zylindrischen Hülse
    b) Zuschneiden der Hülse, um einen Mantel der gewünschten Länge zu verwirklichen;
    c) Formgießen des flexiblen Rohrkopfs;
    d) Befestigen des Kopfes auf einem Ende des Mantels;
    dadurch gekennzeichnet, dass die extrudierte Hülse eine Dicke zwischen 0,2 und 0,4 mm, vorzugsweise zwischen 0,25 mm und 0,35 mm, aufweist, und dass sie Polyethylen hoher Dichte (PE.HD) mit einer spezifischen Masse zwischen 0,935 g/cm3 und 0,97 g/cm3, vorzugsweise mehr als 0,945 g/cm3, in einem Gewichtsteil größer als 55%, vorzugweise 70%, umfasst.
  2. Verfahren zur Herstellung gemäß Anspruch 1, bei dem die Hülse auch Polyethylen geringer Dichte (PE.BD) umfasst, mit spezifischer Masse zwischen 0,86 g/cm3 und 0,93 g/cm3, in einem Gewichtsteil kleiner als 45%, vorzugsweise 30 % und wovon mehr als 50%, vorzugsweise mehr als 90 Gew.%, ein lineares PE.BD (PE.BDL) ist.
  3. Verfahren zur Herstellung gemäß Anspruch 1 oder 2, bei dem eine Hülse extrudiert wird, die wenigstens 90 Gew.% PE.HD und höchstens 10% PE.BDL umfasst.
  4. Verfahren zur Herstellung gemäß einem der Ansprüche 1 bis 3, bei dem eine Hülse mit einem Durchmesser größer als 34 mm extrudiert wird.
  5. Flexibles Rohr (210), das einen Verteilungskopf (230) und einen zylindrischen Mantel (220) aus Kunststoff oder Metall-Kunststoff mit einem Durchmesser größer als 44 mm aufweist, dadurch gekennzeichnet, dass der zylindrische Mantel eine Dicke zwischen 0,2 mm und 0,4mm aufweist, vorzugsweise zwischen 0,25 und 0,35mm, dass er Polyethylen hoher Dichte (PE.HD) mit spezifischer Masse zwischen 0,935 g/cm3 und 0,97 g/cm3, vorzugsweise mehr als 0,945 g/cm3 in einem Gewichtsteil größer als 55%, vorzugsweise 70%, umfasst.
  6. Rohr gemäß Anspruch 5, dadurch gekennzeichnet, dass der Mantel auch Polyethylen geringer Dichte (PE.BD) umfasst mit spezifischer Masse zwischen 0,86 g/cm3 und 0,93 g/cm3 in einem Gewichtsteil kleiner als 45%, vorzugsweise 30%, und wovon 50%, vorzugsweise mehr als 90 Gew.%, ein lineares PE.BD (PE.BDL) ist.
  7. Flexibles Rohr gemäß Anspruch 5 oder 6, bei dem der Durchmesser des Mantels größer als 45 mm ist.
  8. Flexibles Rohr gemäß einem der Ansprüche 5 bis 7, bei dem der Mantel wenigstens 90 Gew.% Polyethylen hoher Dichte (PE.HD) umfasst.
  9. Flexibles Rohr gemäß einem der Ansprüche 5 bis 8, bei dem der Mantel höchstens 10% Polyethylen geringer Dichte (PE.BD) umfasst.
  10. Flexibles Rohr gemäß einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass der Verteilungskopf mit einem Rastwulst versehen ist, der zur Befestigung einer Hülse oder eines Verteilungsansatzstücks, wie zum Beispiel eines Spenderverschlusses, bestimmt ist.
  11. Flexibles Rohr gemäß einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass der Verteilungskopf Polyethylen hoher Dichte (PE.HD) mit spezifischer Masse zwischen 0,935 g/cm3 und 0,97 g/cm3, vorzugsweise mehr als 0,945 g/cm3, in einem Gewichtsteil größer als 55%, vorzugsweise 70%, umfasst.
  12. Flexibles Rohr gemäß einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass der Verteilungskopf auch Polyethylen geringer Dichte (PE.DB) umfasst mit spezifischer Masse zwischen 0,86 g/cm3 und 0,93 g/cm3 in einem Gewichtsteil kleiner als 45%, vorzugsweise 30%, und wovon mehr als 50%, vorzugsweise mehr als 90 Gew.%, ein lineares PE.BD (PE.BDL) ist.
  13. Flexibles Rohr gemäß Anspruch 11 oder 12, bei dem der Verteilungskopf wenigstens 90 Gew.% Polyethylen hoher Dichte (PE.HD) und höchstens 10 Gew.% lineares Polyethylen geringer Dichte (PE.BDL) umfasst.
  14. Flexibles Rohr gemäß einem der Ansprüche 5 bis 13, bei dem der Kopf eine Schulter umfasst, deren Dicke kleiner als 1 Millimeter ist.
  15. Flexibles Rohr gemäß einem der Ansprüche 5 bis 14, dadurch gekennzeichnet, dass es einen Durchmesser größer oder gleich 50 mm aufweist und dass es weniger als 0,80 g pro Zentiliter Nutzvolumen angeboten für das Produkt, das es bestimmt ist zu enthalten, wiegt.
  16. Konstruktion mit einem flexiblen Rohr (210), das mit einem Deckel (240) versehen ist, dadurch gekennzeichnet, dass sie ein flexibles Rohr gemäß einem der Ansprüche 5 bis 15 umfasst.
  17. Konstruktion gemäß Anspruch 16, dadurch gekennzeichnet, dass der Deckel ein Spenderverschluss (240) ist, der mit einer Abdeckung (242) und einer Basis (241) versehen ist, die eine Platte (2411), einen Befestigungsmantel (246) und einen seitlichen Außenmantel (2410) umfasst.
EP08017038A 2004-07-06 2005-07-04 Flexible Plastikrohre und ihr Herstellungsverfahren Revoked EP2022724B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08017038T PL2022724T3 (pl) 2004-07-06 2005-07-04 Giętkie tubki z tworzywa sztucznego i sposób ich wytwarzania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0407471A FR2872792B1 (fr) 2004-07-06 2004-07-06 Tubes souples legers en matiere plastique et leur procede de fabrication
EP05786072A EP1765685B1 (de) 2004-07-06 2005-07-04 Leichtgewichtigs-kunststoffverschluss und leicht flexible kunststoffrohre mit einem derartigen verschluss

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP05786072A Division EP1765685B1 (de) 2004-07-06 2005-07-04 Leichtgewichtigs-kunststoffverschluss und leicht flexible kunststoffrohre mit einem derartigen verschluss
EP05786072.8 Division 2005-07-04

Publications (2)

Publication Number Publication Date
EP2022724A1 EP2022724A1 (de) 2009-02-11
EP2022724B1 true EP2022724B1 (de) 2010-12-22

Family

ID=34949575

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05786072A Active EP1765685B1 (de) 2004-07-06 2005-07-04 Leichtgewichtigs-kunststoffverschluss und leicht flexible kunststoffrohre mit einem derartigen verschluss
EP08017038A Revoked EP2022724B1 (de) 2004-07-06 2005-07-04 Flexible Plastikrohre und ihr Herstellungsverfahren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05786072A Active EP1765685B1 (de) 2004-07-06 2005-07-04 Leichtgewichtigs-kunststoffverschluss und leicht flexible kunststoffrohre mit einem derartigen verschluss

Country Status (10)

Country Link
US (1) US8365955B2 (de)
EP (2) EP1765685B1 (de)
CN (1) CN101001789B (de)
BR (1) BRPI0513140A (de)
DE (2) DE602005025548D1 (de)
FR (1) FR2872792B1 (de)
MX (1) MX2007000233A (de)
PL (2) PL2022724T3 (de)
RU (1) RU2007104344A (de)
WO (1) WO2006013276A1 (de)

Cited By (1)

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EP2718076B1 (de) 2011-06-09 2018-01-03 Essel Propack Ltd. Polymerzusammensetzung zur herstellung biologisch abbaubarer artikel und verfahren dafür

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FR2984092B1 (fr) * 2011-12-16 2014-04-04 Oreal Dispositif de conditionnement et de distribution
US9470213B2 (en) * 2012-10-16 2016-10-18 Raytheon Company Heat-actuated release mechanism
CH707854A2 (de) * 2013-03-20 2014-09-30 Alpla Werke Extrusionsblasgeformte Tube.
FR3016613A1 (fr) * 2014-01-17 2015-07-24 Cep Tubes Tube souple injecte a base de polyethylene haute densite
US9505534B2 (en) * 2014-01-28 2016-11-29 Mead Johnson Nutrition (Asia Pacific) Pte. Ltd. Resealable container with collar and lid
EP3822075A1 (de) 2019-11-15 2021-05-19 TUPACK Verpackungen Gesellschaft m.b.H. Tube
CN111923372A (zh) * 2020-09-09 2020-11-13 广州市瑞高包装工业有限公司 一种塑料软管制备方法及软管
KR102353294B1 (ko) * 2021-01-14 2022-01-19 제이씨텍(주) 마개 조립 척 및 이를 이용한 마개 조립 방법

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Also Published As

Publication number Publication date
EP1765685A1 (de) 2007-03-28
DE602005011293D1 (de) 2009-01-08
US8365955B2 (en) 2013-02-05
DE602005025548D1 (de) 2011-02-03
EP2022724A1 (de) 2009-02-11
BRPI0513140A (pt) 2008-04-29
FR2872792A1 (fr) 2006-01-13
FR2872792B1 (fr) 2006-08-11
CN101001789A (zh) 2007-07-18
RU2007104344A (ru) 2008-08-20
WO2006013276A1 (fr) 2006-02-09
MX2007000233A (es) 2007-03-21
PL1765685T3 (pl) 2009-05-29
CN101001789B (zh) 2010-12-08
EP1765685B1 (de) 2008-11-26
PL2022724T3 (pl) 2011-05-31
US20070210103A1 (en) 2007-09-13

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