EP3592322B1 - Plastic container product - Google Patents

Description

The invention relates to a plastic container product, in particular manufactured by a blow molding, filling and sealing process, with a container body having a container content and an adjoining head part which delimits a removal area which is closed by a head membrane which has a connecting seam, which penetrates a plane spanned by the head membrane and separates penetrable areas on the free face of the head membrane for a removal process of the container contents.

Plastic containers that are produced in a blow molding, filling and sealing process (BFS process), as is, for example, in the EP 2 269 558 A1 described and also known in the specialist world under the name bottelpack® system, are used for food and luxury goods as well as in medicine with great advantage for the packaging of pharmaceuticals, diagnostics, enteral nutrition and medical products, e.g. rinsing and dialysis solutions. An essential advantage of such containers for these purposes is that the contents only come into contact with a polymer forming the container material, typically a polymer Plastic like LDPE, HDPE or PP. In the case of one-piece containers manufactured and filled using the BFS method, the sterility of the contents can be guaranteed for longer periods of time. Containers that are intended for injection, infusion, transfusion or enteral nutrition have a special shape of the head area for the formation of accesses to the container contents. The one-piece design of the container and head enables safe sterility of the filling material with particularly efficient implementation of the manufacturing process. Caps with elastomer sealing elements (DIN ISO 15759) are attached to the container head by welding or overmolding.

With such containers - as with other container products for medical purposes, such as injection vials, cylindrical ampoules or plastic containers for injections (DIN EN ISO 15747: 2012-07) - e.g. when piercing with injection cannulas or piercing parts, polymer or elastomer particles are punched out of the closure material. These loose particles can remain in the cannula, the injection syringe, or in the container itself. Among other things, this can lead to a clogging of the cannula, which makes the removal and / or injection process impossible; Particles can also get into the product.

With regard to this problem, limit values have already been specified in EN ISO 8871-5: 2014 when using injection vials with elastomeric closures, as well as in the US Pharmacopoeia Chapter 381. In order to master this problem - also known as fragmentation in technical terms - were by Marinacci et al. in the state of the art ( U.S. 5,868,721 ) already proposed special needle geometries, which, however, makes complex and expensive special cannulas necessary.

Through the WO 81/02286 a plastic container is known with preferred, thin-walled piercing positions for a cannula arranged on a defined lateral shoulder area of the container. Sufficient thinning can only be achieved here with a very complex tool technology, taking into account indented areas that make easy cleaning very difficult. In addition, a complete emptying of the container is not possible via these thin spots, since they are not located at the highest or lowest part of the container.

In the U.S. 4,574,965 to Meierhoefer ), on the other hand, a container product made by a blow molding, filling and sealing process is known with a specially designed double dome geometry without thinning for the container head, in order to ensure a secure seal and no particle formation when piercing with a cannula for a removal process from the container to ensure. A small wall thickness in the piercing area is not necessary here. The necessary double dome geometry allows only one puncture point and deviates very strongly from the tried and tested head geometry of blow-molded, filled and sealed infusion containers as container products according to DIN EN ISO 15759: 2006-05 and makes special cap systems necessary, which are not correspond to the proven ISO standard 15759: 2006-05, which in turn is costly and can impair the functional reliability of the entire container system.

U.S. 4,574,965 ( Fig. 1 and 3 ) shows - as well CN 85103261 A ( Fig. 1, 2 and 3 ) - in addition, a disadvantageous course of the mold parting line in the head area ( Fig. 1 and 3 : seam 18); as a result, the puncture point is very close to the edge of the container head and there is a great danger that the cannula will also unintentionally puncture the neck area of the container even if the angle of penetration is slightly different. Another disadvantage is the low central rigidity of the container head, which is shown in DE 10 2013 012809 picked up becomes. In this document, numerous different dome-like head shapes with several head surfaces are proposed for stiffening the head area, which also require cap constructions that have been adapted in detail and which considerably reduce the piercing area compared to the head area according to DIN EN ISO 15759: 2006-05. This also reduces the possible distance between the two puncture points, which in turn can lead to disadvantages in use, for example when administering an infusion, if a pierced infusion device (EN ISO 8536-4: 2013) with the rather expansive drip chamber is the puncture point for blocks the cannula, which has to be used to inject further medication during the infusion.

The EP 0621027 A1 (Weiler ) shows in Figure 4 a container with a dividing line (42; "parting line"; column 8, lines 26ff) which extends in a straight line across the container body in an end view. Such a parting line typically results in blow molding due to the use of two-part molds. The dividing line results from the separations of the shaping two-part tool. The associated sealing or connecting seam in the head area has a minimal length and follows the course of the dividing line in a straight line. As in this example, sealing seams are generally made as short as possible - not only with blow-molded containers - in order to minimize the risk of weak points, defects or even leaks, which in the case of filled containers with sterile filling material for medical purposes has very serious consequences for the health of the patient may have.

In particular, sealing seams in containers with a multilayer wall structure - described for example in EP 1616549 B1 and DE 10347908 A1 - sensitive and susceptible to leaks that occur.

The DE 10 2013 012 809 A1 relates to a container product in which, instead of a uniform head membrane, which has a uniform curvature the Spanning the end of the head part of the container body, different head surfaces are formed which form different curvatures at the head part end, so that an increased resistance to bending and easier piercing, cutting or penetration is achieved for the possible total removal area of the head membrane. Evasion of the head membrane during the removal process and the risk of leaks are thereby kept to a minimum and handling is possible in a safe manner even when using less sharp spikes, blades or thick cannulas.

The U.S. 4,254,884 , the DE 10 2008 009 418 B3 and the US 2015/0157535 A1 disclose headboards of container products.

Proceeding from this prior art, the invention is based on the object of creating a container product which is further improved compared to the known solutions, in particular with regard to the handling and the removal behavior for the container contents.

A pertinent object is achieved by a container product with the features of claim 1 in its entirety.

In that, according to the characterizing part of claim 1, the connecting seam seen on the free face of the head membrane has a seam course which at least partially deviates from a fictitious straight course, which extends within this plane, which is longer than the straight course and which is penetrable At least partially encompassing areas, very thin-walled, penetrable areas can be formed which are supported by the extended connecting or sealing seam lying in the plane of the head membrane in such a way that it does not come into contact with the respective penetrable area during the removal or addition process of the container contents unintentionally denting of the entire head membrane with deteriorated removal behavior, in particular with regard to sterility, can occur. Since operating errors are excluded in this respect, the handling of the plastic container product according to the invention as a whole is made easier for an operator and, moreover, a safe addition and / or removal process of the container contents is guaranteed in every case. The support and stiffening function for the addition or removal process via the connecting seam according to the invention is also ensured by the fact that, leaving the straight alignment, it at least partially encompasses the penetrable areas and thus further stiffens the edges. Due to the supporting and securing connection seam of the head part, it is therefore possible to reduce the wall diameter of the penetrable areas on the free face of the head diaphragm compared to the other wall parts of the head diaphragm, which further facilitates the mentioned addition and / or removal process.

It is surprising for an average person skilled in the art that the connection seam, which is considerably lengthened compared to an otherwise straight course, using the known blow molding, filling and sealing process (BFS) in a routine production-safe manner results in thin areas as penetrable areas of 0.10 mm to 0 , 25 mm can easily be created without leaks at the connection seam, which is technically also referred to as a head seal seam or head weld seam, and without tearing at the thin spots when internal pressure loads occur in the temperature range above 110 ° C; Temperature ranges, such as those that arise during the sterilization of the filled container product as part of the necessary autoclave process. Here, on the one hand, the opposing shearing movement of the still hot polymer in the third manufacturing step of the BFS process, i.e. when sealing the container head part, seems to result in an obviously favorable alignment of the polymer chains and / or a advantageous state of tension in the head membrane / connecting seam / penetrable areas system. On the other hand, as already mentioned, the supporting effect of the connecting seam, which comes close to the thin piercing surfaces, is of particular importance.

In a particularly preferred embodiment of the container product according to the invention, the seam course of the connecting seam is designed as a kind of sealed or welded seam, which is created during the production of the head part within the scope of the blow molding, filling and sealing process (BFS), which continues along the same on opposite sides of the head part and merges into the mold parting line that is created during its production with multi-part, molding tools as part of the BFS process. During the production of the pertinent sealing seam for the head part, the mentioned penetrable areas with a reduced wall thickness compared to the average wall thickness of the head diaphragm also arise in the head membrane in the context of the manufacturing process mentioned. The sealed or welded seam extends completely through the head membrane in a sealed manner.

It has also proven to be particularly advantageous that the seam course in the head membrane merges at two opposite points into the corresponding dividing lines / seam course in the rest of the head part, which form a fictitious connecting straight line between them, on which the centers of the penetrable areas of the head membrane lie and / or outside, and that, in one embodiment, the fictitious straight line delimits at least one penetrable area in the manner of a tangent or this area assumes a predeterminable distance from the fictitious straight line. In this way, the penetrable areas can be arranged in a supported manner on the head membrane of the container product for a large number of applications in an operationally safe manner.

In this context, it has also proven to be particularly advantageous to form the connecting seam similar or directly to the course of a sinusoidal wave on the head membrane, the wave trough and / or wave crest of which each receive a penetrable area of the head membrane and thus at least partially support it.

In a further particularly preferred embodiment of the container product according to the invention, it is provided that the container body is preferably firmly connected via its head part and / or via a collar between the head part and the container body to a cap part which has externally releasable or released piercing parts which are congruent with are to be arranged in the assignable penetrable areas of the head membrane. Since the mentioned penetrable areas in the head membrane can be arranged off-center and the cap part with its piercing parts has to cover the penetrable areas for a removal process, it is possible according to the invention and advantageously provided to apply the cap parts to the container rotated by a predeterminable offset angle .

Further advantageous embodiments of the container product according to the invention are the subject of the other dependent claims.

• das nach dem Blasform-, Füll- und Siegel-Verfahren mit geringem Leckagerisiko sicher und reproduzierbar herstellbar ist,
• dessen Behälterkopfgeometrie im Wesentlichen der DIN ISO 15759: 2006-05 entspricht,
• das bevorzugt zwei räumlich voneinander getrennte, gleichwertig penetrierbare Bereiche mit kontrolliert geringer Wandstärke aufweist, bei deren Durchstechen mit einer Standardkanüle (DIN EN ISO 7864) - wenn überhaupt - auch ohne Kappe nur sehr wenige Partikel mit ausgestanzt werden,
• das geringe Durchstechkräfte beim Durchstechen mit einem Einstechteil eines Infusionsgerätes gemäß EN ISO 8536-4:2013 ermöglicht, und
• das es ermöglicht, Kappenteile mit zwei Durchstechstellen auch in schräg verlaufenden Positionen auf den Behälterkörper aufzubringen.

Overall, the solution according to the invention creates a container product,

• which can be safely and reproducibly manufactured using the blow molding, filling and sealing process with a low risk of leakage,
• whose container head geometry essentially corresponds to DIN ISO 15759: 2006-05,
• which preferably has two spatially separated, equally penetrable areas with controlled low wall thickness, when they are pierced with a standard cannula (DIN EN ISO 7864) - if at all - only very few particles are punched out even without a cap,
• that enables low piercing forces when piercing with a piercing part of an infusion device according to EN ISO 8536-4: 2013, and
• which makes it possible to apply cap parts with two piercing points to the container body in inclined positions.

Fig. 1

eine gegenüber einer praktisch realisierten Ausführungsform verkleinert gezeichnete perspektivische Ansicht eines Kunst-stoff-Behältererzeugnisses in Form eines Infusionsbehälters mit einem Kopfteil gemäß dem Stand der Technik nach DIN ISO 15759;

Fig. 2

eine vergrößerte Darstellung des Kopfteils des Behältererzeugnisses nach der Fig. 1;

Fig. 3

eine der Fig. 2 entsprechende Darstellung eines geänderten Kopfteils für ein erfindungsgemäßes Behältererzeugnis;

Fig. 4

eine stirnseitige Draufsicht auf eine Kopfmembran, wie sie für ein Kopfteil nach der Fig. 3 eingesetzt ist;

Fig. 5 bis 8

eine der Fig. 4 jeweils entsprechende Darstellung einer Kopfmembran, jedoch mit jeweils anderen Verbindungsnahtverläufen und anderer Anordnung penetrierbarer Bereiche;

Fig. 9

eine Schnittdarstellung durch ein Kopfteil einer weiteren Ausführungsform eines erfindungsgemäßen Behältererzeugnisses mit einer möglichen Kopfmembranausbildung nach einem der Fig. 3 bis 8 mit einem aufgesetzten Kappenteil, wobei zur Durchführung eines Entnahmevorgangs des Behälterinhalts der Zustand während der Einstechbewegung mit einem Einstechteil dargestellt ist; und

Fig. 10

eine perspektivische Darstellung des Kappenteils nach der Fig. 9 mit kappenseitig abgedeckten Durchstechteilen, wobei das Kappenteil als Ganzes von seiner Lage her gegenüber der Längsausrichtung des nur teilweise dargestellten Behältererzeugnisses schräg verlaufend angeordnet ist.

The solution according to the invention is explained in more detail below using exemplary embodiments of a container product. In this case, show in principle and not to scale the

Fig. 1

a reduced perspective view of a plastic container product in the form of an infusion container with a head part according to the state of the art according to DIN ISO 15759;

Fig. 2

an enlarged view of the head portion of the container product after Fig. 1 ;

Fig. 3

one of the Fig. 2 corresponding representation of a modified head part for a container product according to the invention;

Fig. 4

an end plan view of a head membrane, as it is for a head part according to the Fig. 3 is used;

Figures 5 to 8

one of the Fig. 4 Corresponding representation of a head membrane, but with different connection seam courses and a different arrangement of penetrable areas;

Fig. 9

a sectional view through a head part of a further embodiment of a container product according to the invention with a possible head membrane formation according to one of the Figures 3 to 8 with an attached cap part, the state during the piercing movement with a piercing part being shown for carrying out a removal process of the container contents; and

Fig. 10

a perspective view of the cap part after Fig. 9 with piercing parts covered on the cap side, the cap part as a whole being arranged so as to run obliquely from its position relative to the longitudinal orientation of the container product, which is only partially shown.

The Fig. 1 shows a prior art ( DE 102013 012 809 A1 ) Verifiable plastic container product, which is manufactured according to the so-called blow molding, filling and sealing process (BFS) with a container body 10 having a container content (not shown) of the usual type and an adjoining head part 12 which delimits a removal area 14, which is closed by a head membrane 16, which has a connecting seam 18 which extends through a plane 20 spanned by the head membrane and for a removal process of the container contents according to the detailed illustration according to FIG Fig. 2 two penetrable regions 22, 24 separated from one another on the free end face 26 of the head membrane 16, which are shown idealized in a circular shape with their centers M1, M2. Components of the head part 12 are also a neck part 28 and a collar part 30.

This in Fig. 1 The container product shown is an infusion bottle manufactured in one piece according to the BFS process, consisting of a plastic material, especially a polyolefin material. The head part 12 formed in the example shown according to the state of the art according to DIN ISO 15759: 2006-05 can be connected to cap parts 31 according to ISO 15759-BFS-A or ISO 15759-BFS-B by welding or overmolding on the collar part 30, such as this is exemplified in the Figures 9 and 10 is shown. At the free front end of the head part 12 is the continuously running and uniformly convexly curved head membrane 16 for removal and / or addition processes, which for example by means of a cannula (DIN EN ISO 7864) or a piercing part 34 (EN ISO 8536), as exemplified in the Fig. 9 shown, can be pierced in the direction of the arrow. If one looks from above in a vertical plan view of the end face 26 of the head diaphragm 16, the connecting seam 18 shown there, which is curved in itself, follows a fictitious straight course 32, which in FIG Fig. 2 is shown in dashed lines. This fictitious rectilinear course 32 produces the shortest connection between two points E1 and E2, at which the known connecting seam 18 continuously merges into the adjoining mold separating line 19 in the head part 12. The connecting seam 18, which extends in the shape of a bow or tendon between the point-like points E1 and E2, follows the curvature of the head membrane 16 and, designed as a type of reinforcing rib, protrudes preferably by a predeterminable overhang over the free end face 26 of the head membrane 16. Furthermore, the mold parting lines 19 merge into a mold parting line 21 of the container body 10, which in the BFS process is typically formed with the aid of a two-part mold.

Looking towards the Fig. 2 Seen on both sides of the arched connecting seam 18, the two opposing penetrable areas 22, 24 are then located, which for the sake of simplicity are shown as closed circles with their centers M1 and M2. The areas 22, 24 can, however, also have other circumferential geometries due to the manufacturing process have, for example, be elliptical, sickle-shaped or the like more. These areas 22, 24 which can be penetrated or pierced have, as indicated in FIG Fig. 9 results, reduced wall thicknesses, which turn out to be less than the other wall thickness of the head membrane 16. The reduced wall thicknesses for the penetrable areas 22, 24, which, as already explained, can actually have a slightly different shape than a circular shape, result from flow processes of the material during the manufacturing process using the BFS process; but can also be intentionally obtained in the head diaphragm 16 by appropriate shaping using suitable tools. For the sake of completeness, it should be mentioned that according to ISO 15759, the diameter of the head diaphragm 16 can typically be 30 mm.

The connecting seam 18, which is technically also referred to as a head seal seam, thus extends from one point E1 of the head part 12 to the opposite point E2 of the same head part and, as a reinforcement device in the form of a protruding rib, offers at least partially a resistance to unintentional pressing in of the entire head part. bran 16 when attaching a removal device such as a cannula or a piercing part 34 for a subsequent removal or addition process relating to the container contents. Without such a rib-like reinforcing device, if the piercing tool 34 hits it, as shown in FIG Fig. 9 no piercing process can essentially take place through the head membrane 16, but rather this would be curved inward in the case of a thin-walled design and the effective piercing or penetration would be prevented to that extent. If, as is obvious, the head diaphragm 16 is made correspondingly thick in terms of its wall thickness, the head diaphragm 16 itself then forms a resistance even without a bead-like, reinforced connecting seam 18; Only then is an increased expenditure of force necessary for the piercing process by means of the piercing tool 34, and in particular This then leads to the already mentioned fragmentation, in which loose plastic particles from the thickened wall areas increasingly reach the removal channel (not shown) of the piercing tool 34, which must be avoided in any case.

The rib-like reinforcement seam 18 according to the representations in the prior art according to FIG Figs. 1 and 2 already workaround for this problem; nevertheless, it has been shown in practice that this known solution for a functionally reliable and undisturbed removal process for a container, in particular in the form of an infusion container, still leaves something to be desired, which with the solution according to the invention according to the representations according to the Fig. 3ff to be met. For the sake of completeness, it should be mentioned at this point that an adding process of at least one medium can be provided for the removal process by means of a piercing tool of the container contents from the container upstream thereof, for example in the form of a drug supply into the already filled container with the container liquid, such as a Infusion fluid. That in the Fig. 9 The piercing tool 34 shown only in principle may be a conventional injection needle of a syringe.

In the solution according to the invention according to the Figures 3 and 4 the connecting seam 38 according to the invention, seen or arranged on the free end face 26 of the head diaphragm 16, has a seam course 36 deviating from the fictitious straight course 32, which extends within the plane 20 or within the protruding head diaphragm 16 as a surface, longer than the straight course 32 and which at least partially comprises the penetrable regions 22, 24. The non-straight course 36 of the connecting seam 38 according to the invention gives an operator an indication of the position or location of the respective penetrable area 22, 24 on the head membrane 16, since the connecting seam 38 encompasses approximately half of the respective penetrable area 22, 24.

As can also be seen from the Figures 3 and 4 results, the connecting seam 38 running within the plane 20 of the head diaphragm 16 has an alternating, preferably curved course that forms a sinusoidal wave 40, the wave trough 42 of which and the associated wave crest 44 each receive a penetrable area 22 and 24 of the head diaphragm 16 and such at least partially included in half. The seam course 36 in the head membrane 16 again merges here at two opposite points E1, E2 into the rest of the seam course in the head part 12, with the two opposite points E1 and E2 forming the fictitious connecting straight line 32 between them, which follows the fictitious straight seam course 32 the Fig. 2 corresponds. The centers M1, M2 of the penetrable areas 22, 24 of the head membrane 16 lie on this fictitious connecting straight line 32.

The head diaphragm 16 has a circular outer circumference and the said fictitious connecting straight line 32 defines with a further fictitious connecting straight line 48 which is perpendicular to the straight line 32, a fictitious center point Z through which the shaft 40 as shown in FIG Fig. 4 the connecting seam 38 according to the invention goes at the point of transition from wave valley 42 to wave crest 44.

If you continue according to the illustration after the Fig. 4 a tangent to the wave trough 42 and the wave crest 44 through the center point Z, this tangent T includes an angle α of approximately 50 ° with the fictitious connecting straight line 32. Other angular dimensions α in the range of approx. 40 ° ( Fig. 8 ) up to 75 ° ( Fig. 5 ) are possible here depending on the embodiment of the connecting seam 38. In the embodiment according to Fig. 7 the transition from wave trough 42 to wave crest 44 runs outside the central fictitious center point Z through the other center point Z + 1, through which then according to the representation according to the Fig. 4 the tangent would have to be laid. In this respect, however, nothing changes to the angle specifications α.

How to continue from the Figures 3 and 4 results, the beginning P1 of the wave trough 42 and the beginning or the end P2 of the wave crest 44 of a wave 40 of the connecting seam 38 each merges into a section 50, which in turn, viewed from above, on the face 26 of the head membrane 16, along the fictitious connecting line 32 runs, the respective section 50 opening out at the edge into the opposite points E1, E2 on the head part 12. Instead of sections 50 selected in a straight line, these can also have an arcuate course in continuation of the sine wave 40 or in the opposite direction to this wave course. The length of the undulating connecting seam 38 is preferably selected to be at least 30% longer than the diameter of the circular head membrane 16.

The penetrable or pierceable areas 22, 24 on the head membrane 16 are in the embodiment according to FIGS Figures 3 and 4 chosen essentially the same size. As can also be seen from the Fig. 9 results, the two penetrable areas 22, 24 on the head membrane 16 have wall thicknesses that are less than the other average wall thickness of the other head membrane 16, and the average wall thickness of a penetrable area 22, 24 is preferably between 0.15 mm and 0, 35 mm. The wall thicknesses for each penetrable area 22, 24 can also be selected differently so that, for example, one penetrable area is particularly suitable for introducing a puncture cannula and another penetrable area enables good accessibility for introducing a syringe needle. Furthermore, the two surfaces of the penetrable regions 22, 24 can be selected to be of different sizes, as shown by way of example in FIG Fig. 7 for a head diaphragm 16 modified in this respect, wherein in one embodiment a head diaphragm 16 according to FIG Fig. 8 the sequence from wave valley 42 to wave crest 44 is swapped in such a way that in the direction of view of the Fig. 8 seen first on the left side of the wave crest 44 before the wave valley 42 comes.

The connecting seam 38 on the respective head membrane 16 can protrude in the manner of a reinforcing rib at least partially outward to the surroundings and / or in the direction of the interior of the container body 10, with a protrusion outward for the known solution according to the Fig. 2 is shown there. For the sake of simplicity, the design of the ribs in the Fig. 3ff waived. The head diaphragm 16 shown in the figures is shown as a curved surface in the form of the plane 20, which protrudes convexly outwards towards the surroundings. There is, however, the possibility of designing the head diaphragm 16 as a plane, that is to say an uncurved, planar plane (not shown). As a plastic material for the container body 10, a polyethylene, a cycloolefin polymer, a polypropylene, as well as a cycloolefin copolymer, a polypropylene copolymer or a polypropylene blend are regularly possible. Furthermore, the container wall of the container according to the invention can have a multilayer structure (not shown) made of at least two materials.

In order to maintain the wave-shaped connecting seam 38, it is necessary in a corresponding molding device to design the molding tools in such a way that they have the necessary molded recesses and protrusions on their opposite end faces in order to obtain the wave shape for the head part 12. A pertinent molding device for moving molding tools for the purpose of generating pertinent head geometries in plastic containers with link control is exemplified in FIG DE 103 17 712 A1 shown. The wave shape shown in the figures for the connecting seam 38 has proven to be particularly advantageous in terms of manufacturing technology. However, other wave forms can also be selected, for example in the form of an S-shaped arc with a different curve shape. Furthermore, meander-shaped seam courses or zigzag-shaped seam courses can be implemented if necessary. It is important that the seam course of the connecting seam 38 is selected in this way is that the respective penetrable regions 22, 24 are at least partially encompassed in order to sufficiently stabilize them during the puncturing. Furthermore, an improved reinforcement of the otherwise flexible plastic head membrane 16 is achieved overall due to the elongated seam course 36. It is also possible to attach more than two penetrable areas to the head membrane 16 (not shown).

The further embodiments of the head membrane 16 for a container product according to the invention according to the illustrations according to FIGS Figures 5 to 8 are only explained insofar as they differ significantly from the previous exemplary embodiments and unless they have already been adequately explained.

In the embodiment according to Fig. 5 of a head membrane 16, the upper side of the penetrable area 22 is tangent to the fictitious connecting straight line 32 and the further penetrable area 24 has a predeterminable axial distance from this connecting straight line 32. In the embodiment according to Fig. 6 the tangent T applied to the wave trough 42 and wave crest 44, which goes through the center point Z, is steeper than in the embodiment according to FIG Fig. 4 . Furthermore, the connecting straight line 32 lies as a further tangent in the viewing direction Fig. 6 viewed at the top of the penetrable area 22 or at the bottom of the further penetrable area 24, both of which are approximately the same size in terms of area.

In the embodiment according to Fig. 7 If the diameter of the penetrable area 24 is selected to be smaller than the penetrable area 22. Furthermore, as already explained, the course of the shaft 40 is offset off-center from the center point Z through the further center point Z + 1. In the embodiment according to Fig. 8 the two penetrable areas 22, 24, which are approximately the same size, of the connecting straight line 32 is tangent and, as already explained, is the course from wave valley 42 to wave crest 44 according to the exemplary embodiments according to FIGS Figures 3 to 7 applied reversed.

In the embodiment according to Figures 9 and 10 the cap part 31 is placed on the head part 12 in a manner known per se. The cap part 31 is preferably made of a rigid plastic material, which by and large has the shape of a circular cup with a bottom 52 and has detachable tabs 54, 56, of which as shown in FIG Fig. 9 the right flap 56 is removed for a removal process by means of the piercing tool 34. The cap part 31 is firmly attached at its lower edge to a flange part 58 which extends on the head part 12 between the collar part 30 and the neck part 28. For the sake of simplicity, the Fig. 9 the container body 10 is not shown, which is otherwise as shown in FIG Fig. 10 can also have a different shape than the container body 10 according to Fig. 1 . In the cap part 31 there are two piercing parts 60, 62 which cover the respective penetrable areas 22, 24 in an assigned manner (see FIG. Fig. 9 ). The piercing parts 60, 62 each form a type of sealing part and are preferably formed from an elastomeric material that has a low rigidity and low hardness. Thermoplastic elastomers are preferably used for the piercing parts 60, 62, which can be connected to the cap part 31 in a simple manner in a materially bonded manner, for example by welding.

As can be seen from the representation after the Fig. 10 results, for the sake of simplicity, the transition in the form of the neck part 28 between the rest of the head part 12 and the top of the container body 10 has been omitted. Furthermore, with the solution with a cap part 31 according to the Figures 9 and 10 A particularly safe solution is achieved, since the penetrable areas 22 and 24 are only released for a removal or addition process after the respective tab 54 and / or 56 has been pulled off The piercing tool 34 first has to penetrate the respective elastomer piercing part 60, 62. Furthermore, it is possible with the solution according to the invention to this effect, as is in particular the Fig. 10 shows the cap part 31, assigned to the penetrable areas 22, 24, being placed on the head part 12 in an offset manner. So the two penetrable areas 22 and 24 can be on ( Fig. 4 ) or outside ( Figs. 5-8 ) of the fictitious connecting straight line 32, so that the longitudinal axis 64 drawn through the two tabs 54, 56 with the fictitious straight line 32 includes an offset angle β which, according to the exemplary embodiment according to FIG Fig. 10 can include approximately 45 °; but also values between 0 ° ( Fig. 4 .) up to approx. 30 ° ( Fig. 5 ) and beyond. It is thus possible, depending on the intended use, to align the cap alignment of the cap part 31 for a BFS bottle with its two accesses 60, 62 parallel to the axis 32 of the container 10; but also with other cap orientations, preferably between 0 ° to 50 °, to the longer transverse axis or connecting straight line 32 of the container bottle 10 according to the illustration according to FIG Fig. 10 .

Claims (20)

1. Plastic container product, particularly manufactured using a blow-fill-seal method, comprising a container body (10) with a container content and a top part (12) connected to said body, said top part delimiting an extraction region (14), which is sealed by a top membrane (16), which comprises a connecting seam (38), which passes through a plane (20) spanned by the top membrane (16) and separates at least two penetrable regions (22, 24) on the free end face (26) of the top membrane (16) from one another for an extraction process for the container content, characterised in that the connecting seam (38) seen on the free end face (26) of the top membrane (16) comprises a seam course (36) that at least partially deviates from a fictitious straight line course (32), said seam course extending and running within said plane (20), being longer than the straight line course (32) and at least partially enclosing the penetrable regions (22, 24).
2. Container product according to claim 1, characterised in that the connecting seam (38) extends from a point (E1) on the top part (12) to an opposite point (E2) of said top part and, as a reinforcing device, at least partially offers resistance to undesirable compression of the top membrane (16).
3. Container product according to claim 2, characterised in that the course of the connecting seam (38), or the reinforcing device respectively, provides an operating person with an indication of the position of the respective penetrable region (22, 24) on the top membrane (16).
4. Container product according to any one of the preceding claims, characterised in that the connecting seam (38) running within the plane (20) of the top membrane (16) has a changing, preferably curved course.
5. Container product according to any one of the preceding claims, characterised in that the curved course is substantially similar to an individual, preferably sinusoidal wave (40), the wave trough (42) and/or the wave crest (44) of said wave in each case incorporating and thus at least partially enclosing a penetrable region (22, 24) of the top membrane (16).
6. Container product according to any one of the preceding claims characterised in that the seam course (36) of the connecting seam (38) is designed as a kind of separating line, which arises in the blow-fill-seal method when creating the top part, which continues to run (19) along the top part (12) on opposite sides thereof and transitions into a mould separating line (21) of the container body (10), which arises when said container body is manufactured from a multi-part mould as part of the same method.
7. Container product according to claim 6, characterised in that the seam course (36) in the top membrane (16) transitions into the seam course (19) in the top part (12) at two opposite points (E1, E2), which form a fictitious connecting straight line (32) between one another, on which the centres (M1, M2) of the penetrable regions (22, 24) of the top membrane (16) are located and/or outside, and in that, in one embodiment, the fictitious straight line (32) delimits at least one penetrable region (22, 24) in the form of a tangent or this region is a pre-definable distance from the fictitious straight line (32).
8. Container product according to any one of claims 5 to 7, characterised in that the top membrane (16) has a circular outer circumference and the fictitious connecting straight line (32), along with a further fictitious connecting straight line (48), which is perpendicular to said line, define a fictitious centre point (Z) at the point at which they cross, through which the wave (40) of the connecting seam (38) passes at the point of the transition from the wave trough (42) to the wave crest (44).
9. Container product according to claim 8, characterised in that a tangent (T) applied to the wave trough (42) and/or the wave crest (44), which passes through the fictitious centre point (Z) or another centre point (Z + 1), encloses an angle α with the fictitious connecting straight line (32) of 10 to 90 degrees, preferably 30 to 70 degrees, or more preferably 40 to 60 degrees.
10. Container product according to any one of claims 5 to 9, characterised in that the sequence of wave trough (42) to wave crest (44) is reversed.
11. Container product according to any one of claims 5 to 10, characterised in that the start (P1, P2) of the wave trough (42) and/or wave crest (44) of a wave (40) of the connecting seam (38) transitions into a section (50), which, when viewed from above, on the end face (26) of the top membrane (16), runs along the fictitious connecting line (32) and which emerges in each case at the opposite points (E1, E2) on the top part (12).
12. Container product according to any one of the preceding claims, characterised in that the length of the connecting seam (38) is at least 20%, preferably at least 30%, longer than the diameter of the top membrane (16), which has a preferably circular design, when viewed end on.
13. Container product according to any one of the preceding claims, characterised in that the penetrable regions (22, 24) on the top membrane (16) comprise wall thicknesses that are smaller than the other average wall thickness of the top membrane (16), especially in the region of the connecting seam (38), and the average wall thickness of a penetrable region (22, 24) is between 0.10 mm to 0.40 mm, preferably between 0.15 mm and 0.3 mm.
14. Container product according to any one of the preceding claims, characterised in that the wall thicknesses and/or the surface areas of the two penetrable regions (22, 24) on the top membrane (16) are different sizes.
15. Container product according to any one of the preceding claims, characterised in that the connecting seam (38) on the top membrane (16) protrudes in the form of a reinforcement rib at least partially outwards towards the environment and/or in the direction of the inside of the container body (10).
16. Container product according to any one of the preceding claims, characterised in that the container body (10) is preferably securely connected via its top part (12) and/or via a collar (30) between the top part (12) and the container body (10) to a cap part (31), which comprises piercing parts (60, 62) that can be released or are released from the outside, which are arranged to overlap with the assignable, penetrable regions (22, 24) of the top membrane (16).
17. Container product according to claim 16, characterised in that, depending on the position of the penetrable regions (22, 24) in the top membrane (16), the application direction of the cap part (31) with its respective piercing parts (60, 62) is applied with an offset angle β of less than 70°, preferably less than 50°, more preferably less than 30° in relation to the fictitious connecting straight line (32) on the top part (12).
18. Container product according to claim 16 or 17, characterised in that the cap part (31) is fixed to a reinforcing rib on the free end face (26) of the top membrane (16), which is preferably formed by the connecting seam (38).
19. Container product according to any one of the preceding claims, characterised in that the top membrane (16) comprises a non-curved, planar or curved plane (20) which protrudes outwards towards the environment in a convex manner.
20. Container product according to any one of the preceding claims, characterised in that a polyethylene, polypropylene, polypropylene copolymer or a polypropylene blend is used as the plastics material for the container material and/or in that the container wall of the container body (10) comprises a multi-layered structure made up of at least two materials.

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