EP0144925A2 - Packaging system - Google Patents

Abstract

1. Packaging system consisting of a product container (1), in particular a disposable container, for pourable, flowable or brushable material with a substantially tubular wall which is flexible in longitudinal direction and of an applicator (25) constructed for the reception of the product container (1), wherein the tubular wall of the product container (1) is constructed as bellows (2) to be squashed or extended in longitudinal direction (A) of the tube, the container (1) at one longitudinal end of the tube possesses an inlet and/or outlet neck (3) with an encircling, radially projecting collar (4) as well as with a fillet (5) drawn in substantially encirclingly, the applicator (25) consists of a tubular body (26) with a lid area or end wall (29), which is to be covered by a closure member (27), at one longitudinal tube end and of a piston (7), which lies opposite the end and wall and is borne to be displaceable in longitudinal direction (A) of the tube, the end wall (29) possesses a central passage (30) of a clear diameter between the diameter of the fillet (5) and that of the collar (4) and an equipment (33, 34, 51, 60, 63) for the advancing of the piston (7) in longitudinal direction (A) of the tube is associated at the tubular body (26) with the base (6), lying opposite the end wall (29), of the bellows (2), characterized thereby, that the container (1) is made of a preformed blank, in particular in the form of an extruded hose, with an external diameter at most as great as the external diameter (d) of the neck part (3) of the product container (1), the diameter ratio of the external diameter (d) of the neck part (3) to the external diameter (D) of the bellows (2), which is shaped from the preformed blank, and everywhere - apart from the neck part (3) - displays a substantially equal wall thickness independently of the diameter in different radial planes, however displays a value between 1:2 and 1:3 and a protection against rotation, in particular in the shape of a multisided member, is shaped on in the fillet (5) between collar (4) and bellows (2) as well as the base (6), lying opposite the outlet neck (3), of the product container (1), is constructed as contact area for pressing against the piston displaceable in the associated applicator and is curved in correspondence with the shape of the piston (7) through rolling-in of the lower bellows members.

Description

The invention relates to a packaging system consisting of a product container, in particular a disposable container, for pourable, flowable or spreadable material with an essentially tubular wall that is flexible in the longitudinal direction of the tube and an application aid designed to accommodate the product container.

The cost of plastic packaging is usually determined by more than 50% of the cost of the material. For mass products, e.g. Milk, extremely lightweight plastic bag packaging was therefore developed. Another inexpensive type of packaging is the so-called bellows container, as it e.g. is described in DE-GM 82 33 673.3. The bag and bellows packaging types require only a relatively small amount of material, and they also take up only a small volume before filling and after emptying, so that the transport of the empty packaging and the disposal of waste pose correspondingly minor problems. However, the shape instability has the disadvantage of poor handling, so that these types of packaging are difficult to empty, reclose or use for precise product dosing. For this reason, additional application aids, in particular reusable setting and pouring aids, are supplied, for example for milk packaging.

Another problem, particularly in the case of packaging for highly viscous and pasty products, is the generally inadequate or laborious emptying of residues, e.g. for tubes containing tinting colors. The user has to exert a lot of strength, skill and time in order to even completely empty the respective packaging.

The object of the invention is to create a packaging system with a product container which is inexpensive in terms of material and empty transport costs and can be largely completely emptied without any problems, and an associated application aid with the coupling, tulle and emptying means corresponding to the respective application. The solution according to the invention consists in the packaging system with a product container with an essentially tubular wall which is flexible in the longitudinal direction of the tube and with an application aid designed to accommodate the product container, in that the tubular wall of the product container is designed as a bellows to be compressed or expanded in the longitudinal direction of the tube that the container has an inlet and / or outlet neck with a circumferentially radially projecting collar and between. Collar and bellows essentially all-round retracted throat has that the application aid consists of a tubular body with an end wall to be covered with a closure piece on a pipe longitudinal end and a piston opposite the end wall, displaceably mounted in the pipe longitudinal direction, that the end wall is a central opening of a clear diameter between the diameter of the groove and that of the collar and that a device for advancing the piston in the longitudinal direction of the tube is assigned to the bottom of the bellows on the tubular body opposite the end wall. Improvements and further refinements of the invention are described in the subclaims.

• Fig. 1 einen Faltenbalgbehälter in Seitenansicht, teilweise im Schnitt;
• Fig. 2 den Faltenbalgbehälter von Fig. 1 in aufge-und 3 hängter und zusammengepreßter Form;
• Fig. 4 einen Schnitt eines durch einen Kolben zusammengepreßten Faltenbalgbehälters;
• Fig. 5 alternative Ausführungsformen von Kopf- und
• und 6 Bodenteil des Faltenbalgbehälters nach Fig. 1;
• Fig. 7 einen zum Faltenbalgbehälter nach Fig. 6 passenden Kolben;
• Fig. 8 einen Faltenbalgbehälter mit Applikationsspitze;
• Fig. 9 einen Faltanbalgbehälter mit Weithalsöffnung;
• Fig. 10 eine Zweikomponenten-Faltenbalg-Verpackung und 11 mit zugehörigem Kolben;
• Fig. 12 eine Anwendungshilfe teilweise im Schnitt für einen der Faltenbalgbehälter;
• Fi^g. 13 den Ausschnitt einer Seitenansicht der Anwendungshilfe nach Fig. 12;
• Fig. 14 eine Seitenansicht und eine Ansicht von unten und 15 einer Anwendungshilfe mit Zahnrad-Kolbenvortrieb;
• Fig. 16 eine Anwendungshilfe mit Kolbenvortrieb durch
• bis 19 Daumendruck in verschiedenen Ansichten und Schnitten;
• Fig. 20 eine als Blisterverpach-ung ausgebildete An-und 21 wendungshilfe;
• Fig. 22 eine als Falt/schachtel ausgebildete An-
• und 23 wendungshilfe; und
• Fig. 24 Anwendungshilfen für hochviskose Produkte. bis 26

The invention creates a packaging system with a bellows container with new additional features and associated application aid. This has numerous advantages. The use of materials for the packaging, which is made in particular of plastic, and the space required for freight and storage of empty packaging is reduced by approximately 2/3 or 3/4 compared to previously used intrinsically stable individual packaging. These advantages are achieved in particular in that certain packaging features, for example the stability and manageability, are shifted from the individual disposable packaging to the application aid which is preferably to be reused. The packaging system according to the invention also offers the possibility of excellent residual emptying of the bellows containers even with poorly flowing or pasty products. Furthermore, new markets can be opened up by using the possibilities in bellows containers; For example, it can be used for pipe cleaners with pump packaging or as a concentrate container, which, when filled with water, for example, becomes a correspondingly large-volume standard product container. The invention makes it easy to create packaging systems for household, hobby, craft and industry that can be equipped with environmentally friendly and inexpensive refill units. Details of the invention are explained on the basis of the schematic representation of exemplary embodiments. Show it:

• Figure 1 shows a bellows container in side view, partially in section.
• FIG. 2 shows the bellows container from FIG. 1 in a suspended and 3 suspended and compressed form;
• 4 shows a section of a bellows container compressed by a piston;
• Fig. 5 alternative embodiments of headers and
• and 6 bottom part of the bellows container according to Fig. 1;
• FIG. 7 a piston suitable for the bellows container according to FIG. 6;
• 8 shows a bellows container with an application tip;
• 9 shows a bellows container with a wide-mouth opening;
• 10 shows a two-component bellows packaging and 11 with an associated piston;
• 12 shows an application aid, partly in section, for one of the bellows containers;
• Fi ^g. 13 shows the detail of a side view of the application aid according to FIG. 12;
• 14 is a side view and a view from below and 15 of an application aid with gear-piston drive;
• Fig. 16 shows an application aid with piston jacking
• up to 19 thumb prints in different views and cuts;
• 20 an application and 21 application aid designed as a blister pack;
• 22 shows an attachment designed as a folding / box
• and 23 application aid; and
• Fig. 24 Application aids for highly viscous products. until 26

1 to 11, bellows containers of the different design variants as well as different application possibilities and associated pistons for the residual emptying belonging to the application aids explained below are described. The application aids themselves are explained with reference to FIGS. 12 to 26.

1 shows a product container 1, consisting of a bellows 2 and a neck part 3 forming the inlet and / or outlet. The latter has a collar 4 designed as a retaining bead and a rotation lock arranged underneath it in a groove 5, in particular designed as a polygon. The diameter ratio d / D of neck part 3 and bellows 4 should be between 1: 2 to 1: 3. At the same time, the outer diameter d of the neck part 3 should be at least so large that the preform produced for the container production, for example in the form of an extruded tube, can be smaller in diameter than d. In this way, a very thin-walled bellows 2 is obtained, the wall thickness of which is relatively uniform on the circumference and remains flexible in the base 6, while the neck part 3 becomes thick-walled and stable.

An even, thin-walled wall thickness distribution over the entire bellows 2 gives the product container 1 special advantages in terms of filling, packaging and application. For example, as shown in Fig. 2, the product container 1 hangs in the position suspended on the collar 4 when filling by the inflow product weight due to the uniform thin walls, and the bellows receives a correspondingly large capacity. This is particularly advantageous when filling foaming products, allows high filling speeds and saves the constructive addition of an additional filling volume of approx. 10% required for rigid containers.

Another advantage, e.g. for the storage of easily oxidizing products, is that after the filling process and before closing the product container 1, the bellows 2 can be raised again from the bottom 6 to such an extent that the filling level is at or just below the upper edge of the neck part and accordingly little Air is trapped in the container.

Fig. 3 shows the product container 1 of FIG. 1 in the compressed state. The empty volume takes up only approx. 25% of the volume of the filled container; From this ratio, the considerable advantages for transporting and storing empty containers become clear. In such compressed containers, the product can also be packed in concentrate form and only at the consumer, e.g. by filling up with water to bring the concentration to use. One and the same container has a low shipping volume and (after dilution) a large product volume ...

FIG. 4 shows a likewise compressed product container 1 according to FIG. 1, the bottom 6 of which is additionally mechanically deformed by pressing in a piston 7. When the piston 7 is pushed in, the lower bellows pieces roll up in accordance with the piston length if the desired thin wall of the bellows is present. With the help of such pistons 7 or the like, further down at the same time With the constructions described in the application aids, the user is able to easily empty the product container down to the rest. This aspect is of particular importance for packaging for highly viscous liquids as well as pasty and thixotropic products.

5 and 6 show alternative designs of a product container 1, in which the filling opening for the product is not identical to the product outlet opening. Here, the container 1 has a neck part 3 with a collar 4, which can be equipped with a taper 8 and a nipple 9 to be cut off. Instead of a base 6, a wide-neck opening 10 is provided, which is created during manufacture by cutting off a so-called "lost head" and through a circumferential U-profile 11 lying at right angles to the longitudinal direction of the container A has to be reinforced. This is followed by a short, cylindrical shoulder 12, the inside diameter of which is slightly smaller than the inside diameter of the bellows 2. With the help of a sealing plug 13, which due to its shape can also perform the same residual emptying function as the piston 7 from FIG. 4, the product container 1 is closed by being injected or welded to the underside of the U-profile 11.

While the embodiment shown in FIG. 5 with a wide-mouth opening 10 is more suitable for filling highly viscous liquids or pasty products, the alternative according to FIG. 6 represents a version for thinner products with a small filling opening 14. The end face becomes the bounce closure 15 provided for example 16 of the piston 7 with an ent speaking recess 17 according to FIG. 7.

FIG. 8 shows a variant of the product container 1 equipped with a molded-on application tip 18 for the point-like or linear application of product. The thickness or width of the product strand can be cut to the appropriate height by cutting off the application tip 18. The configuration of the filler opening, not shown in FIG. 8, and its type of closure can be provided as desired in accordance with FIGS. 1, 5, 6 or 9.

Fig. 9 shows a part of a product container 1 with a combined filling and discharge opening equipped as a wide neck opening 10, e.g. to be closed by welding with a laminated aluminum foil. Such containers are particularly suitable for powdery or free-flowing products, e.g. Pipe cleaner. The bellows packaging of Fig. 9 could e.g. pressed together, filled with a portion of pipe cleaner granulate, can also be used as a pump when used. If necessary, the extensibility and compressibility of the product container in the longitudinal direction of the tube is used to pump cleaning agent into the blocked line; at the same time, by further pumping after the product has acted on, the damage in question can be completely eliminated without any special aids.

A two-component packaging 19 is shown partially in section in FIG. This consists of an outer bellows 20 with a wide-neck opening 10 and an inner bellows 21 arranged essentially coaxially in the outer bellows. The outer and inner bellows 20 and 21 are connected to one another, for example in a form-fitting manner, with the aid of an adapter plate 22. For the complete emptying of this two-component packaging 11, a piston 7 is provided, which consists of an inner piston 23 and an annular piston 24 concentrically surrounding the inner piston. The height difference H between the two pistons 23, 24 corresponds to the length difference L between the bellows 20 and 21.

The application aids according to the invention are primarily explained in FIGS. 12 to 26 described below. The main functions of application aids are: the inclusion of the dimensionally unstable bellows containers and their protection during use; ensuring convenient use, depending on the product, by spraying, pouring, pouring with flowable or free-flowing products, by pressing or pressing with thixotropic, pasty or highly viscous substances; ensuring that the product container is completely emptied; an individual or predetermined dosage of product; and convenient storage of a opened package.

The application aid can be made of any material, e.g. made of cardboard, metal, plastic or a combination of such materials. A cylindrical shape is preferred, but a polygonal, in particular square, plan is also favorable.

The main components of the application aid are a tube-like body, a piston and a closure piece. These main components are specifically designed for each product and application in the exemplary embodiments described below.

FIG. 12 shows an application aid 25, partially in section, consisting of a tubular body 26, a Piston 7 and a closure piece 27. The tubular body 26 consists of, for example, a cylindrical tubular piece 28 which is open at the bottom and has an integrally formed end wall 29 which has a centrally arranged opening 30. The cylindrical tubular piece 28 has two longitudinal slots 31 which lie opposite one another and which extend to the lower edge 32 pass. 4 corresponding piston 7 is connected via two molded webs 7a to be guided in the longitudinal slots 31 to an outer adjusting ring 33 such that the piston 7 moves forward by advancing the adjusting ring 33 and thus the bellows 2 - with the result of the product outlet - is to be compressed.

The closure piece 27 is provided, for example, as a known, so-called double-wall closure, which has such a large footprint 34 that the application aid is to be kept upside down and thus good residual emptying is promoted even with more viscous products.

In Fig. 13 is a side view of a section of an application aid 25 is shown, in which the two longitudinal slots 31 have additional lateral recesses 35, in which the webs 7a are to be locked by relative rotation of the collar 33 and piston 7, so that by pushing the piston 7 in Longitudinal container direction A from a recess 35 to the next a defined amount of product is to be dispensed in a metered manner.

14 and 15 show a side view and a view from below of a further tubular body 26 of an application aid 25, the longitudinal slots 31 of which are provided on one side with a molded rack profile 36.

Instead of an outer adjusting ring 33 according to FIG. 11, gears 38 and an adjusting wheel 39 are connected to the piston 7 via a shaft 37, with the aid of which product can be finely adjusted or continuously applied.

A special, economically producible application aid 25 is described with reference to FIGS. 16 shows the application aid 25 in a side view. Fig. 17 shows the top view of the tubular body 40 without stopper 27 and the product container 1. Fig. 18 shows the bottom view of the tubular body 4 ₀ without piston 7. Fig. 19 shows in partial section the piston 7.

In this advantageous embodiment, the tubular body 40 consists of a partially cylindrical shell 41 that extends slightly beyond the longitudinal direction A. The two end edges 42 of the shell 41 that face each other in a pincer shape and are perpendicular in the drawing have a mutual clearance 43 that is somewhat smaller than that double inner radius 44.

The upper end of the shell 41 is delimited by a circular head plate 45 with a central, round opening 46 and adjoining one-sided recess 47. The recess 47 is dimensioned such that a constriction 48 arises in the region of the interruption of the opening 46, the the chord corresponding to the constriction 48 is both shorter than the inner diameter I of the round opening 46 and also as the mutual distance between the outer ends 49 of the one-sided recess 47.

The lower end of the shell 41 is delimited by a base plate 50. This has an at least thumb-wide, one-sided opening 51 ending in an axially centered semicircle 52. The application aid 25 according to FIG. 16 includes a piston 7 according to FIG. 19, the largest outside diameter of which is slightly smaller than the inside diameter of the tubular body 40, see above that the piston 7 can be pressed into the shell 41 by tilted insertion in the longitudinal direction of the container A and can remain easily displaceable and captive therein.

19 has an outer circumferential edge web 53, the inside diameter of which is somewhat larger than the outside diameter of the product container 1. The bottom of the piston 7 is preferably closed by an inwardly curved base plate 54. The curvature ensures a central pressure approach when the application aid is actuated by thumb pressure, so that the product container can be compressed without bending out laterally from the half-shell 41.

• Der verschlossene, flexible Produktbehälter 1 nach Fig. 1 wird mit dem unteren Ende zwischen den Endkanten 42 der Schale 41 eingedrückt und mit dem Boden in bzw. auf den untenliegenden Kolben 7 gesetzt. Danach wird der obere Teil des Produktbehälters 1 zwischen die Endkanten 42 der Schale 41 eingedrückt und zwar derart, daß der als Halterrnlst ausgebildete Kragen 4 beim Einführen des Halsteils 3 in die Aussparung 47 über der Engstelle 48 der Durchbrechung 46 der Kopfplatte 45 positioniert wird. Das Halsteil wird hinter der Engstelle 48 und die Faltenbalgspitzen werden hinter den Endkanten 42 derart gehalten, daß ein Herausfallen des Produktbehälters aus der Anwendungshilfe ausgeschlossen ist.

The insertion of the product container into the application aid according to FIGS. 16 to 19 is carried out, for example, as follows:

• The closed, flexible product container 1 according to FIG. 1 is pressed with the lower end between the end edges 42 of the shell 41 and the bottom is placed in or on the piston 7 located below. The upper part of the product container 1 is then pressed in between the end edges 42 of the shell 41 in such a way that the collar 4 designed as a holder is positioned above the constriction 48 of the opening 46 of the head plate 45 when the neck part 3 is inserted into the recess 47. The neck part is held behind the constriction 48 and the bellows tips are held behind the end edges 42 in such a way that the product container cannot fall out of the application aid.

16 to 19 - after removing the screw connection - by means of thumb pressure on the underside of the piston 7. The piston 7 and the tubular body 40 ensure a uniform displacement of the bellows 2 when the shell 42 is opened upwards in the container's longitudinal axis A until it is completely emptied.

When the product is discharged proportionally, at the end of a dosing process - due to the resilience of the bellows - a clean product tear-off of the discharged product takes place. Product overrun can be safely avoided in this way.

By additional mounting aids, e.g. Support strips with screw connection or self-adhesive tape or a combination with a suction holder that enables swiveling, the application aid can also be used: standing upside down or swiveling as an inexpensive and easy-to-load wall dispenser, for example for hand washing or washing-up liquid.

20 to 23 use and design of a packaging as an application aid according to the invention are described.

20 and 21 represent an application aid 25 in the form of a blister pack 55. The latter consists of a laminated cardboard disc 56 with a welded-on Deep-drawn part 57. The deep-drawn part contains a half-shell-shaped trough 58 for receiving the product container 1 and the piston 7. At the top of the trough 58 there is an opening 59 from which the neck part 3 of the product container 1 can protrude with a closure. A thumb-wide cavity 60 is formed on the bottom side of the tub 58.

A likewise thumb-wide strip 61 can be torn out along the perforation lines 62 from the cardboard disk 56, so that an elongated hole-like opening 63 that extends as far as the lower edge of the cavity 60 is created.

After inserting the thumb through the opening 63 into the cavity 60, the piston 7 can be advanced in the longitudinal direction A of the tube, similarly to the exemplary embodiment according to FIG. 16. With the help of the well-known euro hole 64, the application aid 25 with product container 1, which is also designed as sales packaging, can be kept hanging.

22 and 23 represent a further sales packaging consisting of a product container 1, a piston 7 and an outer wrapper 65. The wrapper 65 is formed, for example, in the form of an elongated folding box with a square bottom so that it can also be used as an application aid. The casing 65 has on its long side an approximately thumb-wide opening strip 63 which extends into the bottom 66 of the casing 65, so that the piston 7 can be actuated with the thumb without any problems.

In the exemplary embodiment, the neck part 3 of the product container 1 protrudes from the top side 67 of the casing 65 out. It is attached to the collar 4 by known designs of the cover flaps and secured against rotation.

24, 25 and 26 show application aids 25 which are used for highly viscous products, e.g. for joint sealants or the like. In the case of such products, which are often to be discharged through long application tips which are narrow in the product outlet cross section, very high pressures are required to empty the packaging. For this reason, application aids have been used for a long time, e.g. by manually screwing in a rotating spindle, by mechanically advancing a piston using a hand gun or a similarly functioning compressed air gun in the very stably designed, expensive packaging equipped with an associated piston, e.g. Cartridges, generate a very high pressure to move the plunger inside the cartridge.

According to the invention, such application aids are improved in such a way that inexpensive bellows containers can also be used. In this sense, a single receiving sleeve 68, shown in FIG. 24 and made of plastic or metal, is provided for all three known systems of application aids, the inner diameter of which is to be matched to the outer diameter of the product container designed as a bellows. The sleeve 68 has an end wall 69 with a central bore 70 through which a screwed-on application tip of a bellows container protrudes. Two opposing cams 71 are molded onto the open end of the sleeve 68. Which form part of the various application aids mentioned above Sleeve 68 is connected to the application aids shown in FIGS. 25 and 26 with the aid of a known bayonet lock after inserting a product container.

The essential difference of the application aid according to the invention compared to known devices, e.g. for use in the application of joint sealants, is that the piston 7 for discharging the product is not part of each individual package, but is part of the application aid itself. The piston can therefore be guided with extreme care in its counter bearing because the application aid is to be made from stable material because of the intended multiple use. In FIG. 25, the piston 7 is connected to a spindle 72, in FIG. 26 to a jack rod 73.

The fastening and inserting elements present in known application aids are omitted according to the invention and are replaced by a cylindrical connecting piece 75 provided with a base plate 74, onto which known bayonet locking elements 76 are to be molded.

Finally, an important advantage of the new application aid is that by assigning a receiving sleeve 68 to the different versions of application aids, a device with a non-product-carrying "pressure container" is created, which enables the use of thin-walled, inexpensive to produce product containers.

Reference symbol list

• 1 = product container 28 = pipe section
• 2 = bellows 29 = end wall
• 3 = neck part 30 = opening
• 4 = collar 31 = longitudinal slots
• 5 = fillet (with rotary 32 = lower edge securing) 33 = collar
• 6 = floor 34 = floor space
• 7 = piston 35 = recesses
• 7a = web (7) 36 = rack profile
• 8 = taper 37 = shaft
• 9 = nipple 38 = gears
• 10 = wide neck opening 39 = adjusting wheel
• 11 = U-profile 40 = tubular body
• 12 = paragraph 41 = shell
• 13 = plug 42 = end edge
• 14 = filling opening 43 = distance
• 15 = impact lock 44 = inner radius
• 16 = face 45 = head plate
• 17 = recess 46 = opening
• 18 = application tip 47 = recess
• 19 = two-component 48 = bottleneck packaging 49 = ends
• 20 = outer bellows 50 = base plate
• 21 - = inner bellows 51 = opening
• 22 = adapter plate 52 = semicircle
• 23 = inner piston 53 = edge web
• 24 = ring piston 54 = base plate
• 25 = application aid 55 = blister packaging
• 26 = tubular body 56 = cardboard disc
• 27 = plug 57 = deep-drawn part

Reference symbol list

• 58 = tub
• 59 = opening
• 60 = cavity
• 61 = stripes
• 62 = line of perforations
• 63 = opening strip
• 64 = euro hole
• 65 = wrapping
• 66 = floor
• 67 = top side
• 68 = receiving sleeve
• 69 = end wall
• 70 = hole
• 71 = cams
• 72 = spindle
• 73 = jacking rod
• 74 = base plate
• 75 = connector
• 76 = bayonet locking elements
  • d = outer diameter of 3
  • D = outer diameter of 4
  • A = container longitudinal direction
  • H = height difference 23/24
  • L = length difference 20/21
  • I = inner diameter of 46

Claims (28)

1. Packaging system consisting of a product container (1) - in particular disposable container - for pourable, flowable or spreadable material with an essentially tubular wall (2) which is flexible in the longitudinal direction of the tube and an application aid (25) designed to hold the product container (1). , characterized, that the tubular wall of the product container (1) is designed as a bellows (2) to be compressed or stretched in the longitudinal direction (A) of the tube, that the container (1) has an inlet and / or outlet neck (3) with a circumferentially radially projecting collar (4) and a collar (5) between the collar and bellows (2) which is essentially circumferentially retracted, that the application aid (25 ) consists of a tubular body (26) with a cover surface or end wall (29) to be covered with a closure piece (27) at a longitudinal pipe end and a piston (7) which is mounted opposite the end wall and is displaceable in the longitudinal pipe direction (A), that the end wall (29) has a central opening (30) of a clear diameter between the diameter of the groove (5) and that of the collar (4) and that the bottom (6) of the bellows (2) opposite the end wall (29) on tubular body (26) is assigned a device (33, 34, 51, 60, 63) for advancing the piston (7) in the longitudinal direction of the tube (A). 2. Packaging system according to claim 1, characterized in that the bellows part (2) of the product container (1) has a diameter two to three times as large as the neck part (3). 3. Packaging system according to claim 1 or 2, characterized in that the groove (5) between the collar (4) and bellows (2) has a rotation lock, in particular in the form of a polygon. 4. Packaging system according to one or more of claims 1 to 3, characterized in that the wall thickness in different radial planes of bellows (2) and bottom area (6) regardless of the diameter - apart from the neck part (3) - is essentially the same everywhere. 5. Packaging system according to one or more of claims 1 to 4, characterized in that the outlet neck (3) opposite bottom (6) of the product container is designed as a contact surface for pressing a piston connected to the associated application aid (7). 6. Packaging system according to claim 5, characterized in that the bottom (6) of the product container (1), in particular by rolling the lower bellows pieces, the shape of the piston (7) can be arched accordingly (Fig. 4). 7. Packaging system according to one or more of claims 1 to 6, characterized in that the bottom (6) of the bellows (2) as a filling opening, in particular as a wide-neck opening (10) to be closed preferably by a sealing plug (13), an impact or welding closure. , is formed (Fig. 5). 8. Packaging system according to claim 7, characterized in that the on the bottom (6) filling opening (10) opposite product outlet side is equipped with a nipple to be cut (9) (Fig. 5). 9. Packaging system according to claim 7 or 8, characterized in that the wide-mouth opening (10) is formed by a circumferential U-profile (11) lying at right angles to the tube longitudinal axis (A) (Fig. 5). 10. Packaging system according to one or more of claims 7 to 9, characterized in that the end face (16) of the piston coupled to the application aid (7) is adapted to the shape of the outside of the bottom of the product container (Fig. 6, 7). 11. Packaging system according to one or more of claims 1 to 10, characterized in that the product container is designed as a two-component packaging and from an outer bellows (20), preferably a wide-mouth outlet opening (20a) and an inner bellows enclosed by the outer bellows ( 21) exists (Fig. 10, 11). 12. Packaging system according to claim 11, characterized in that the two bellows containers (20, 21) are connected to one another on the product outlet side with the aid of an adapter plate (22), that the piston (7) associated with the two-component packaging of the application aid from an inside The inner bellows (23) assigned to the bellows (21) and an annular piston (24) assigned to the outer bellows (20) and that the length of the inner piston (23) and the annular piston (24) corresponds to the length difference between the inner bellows (21) and the outer bellows (20 ) is adapted (Fig. 10, 11). 13. Packaging system according to one or more of claims 1 to 12, characterized in that the tubular body (26) of the application aid (25) from one there is an essentially cylindrical pipe section (28) with an end wall (29) assigned to the product outlet side of the product container (1) and having a central opening and at least one longitudinal slot (32) extending in the cylinder axis direction (A) from the lower edge (32) opposite the end wall (29) 31, 51, 61, 63). 14. Packaging system according to claim 13, characterized in that two mutually opposite longitudinal slots (31) are provided that the piston (7) connected to the application aid (25) has two molded in the longitudinal slots (31) to be guided, in particular with an outside of the tubular body (26) located collar (33) connecting webs (7a) has (Fig. 12). 15. Packaging system according to claim 14, characterized in that the longitudinal slots (31) have lateral recesses (35) as locking grooves for the webs (7a) (Fig. 13). 16. Packaging system according to claim 13 or 14, characterized in that the longitudinal slots (31) have on one side a molded rack profile (36) and that the piston (7) has a rotatable shaft (37) with the rack profile (36) engaging gears (38 ), in particular with an adjusting wheel (39), (Fig. 14, 15). 17. Packaging system according to claim 13, characterized in that the tubular body (40) has a single continuous opening between the end edges (42) with a clear width (43) close to twice the inner radius (Fig. 16, 18). 18. Packaging system according to claim 17, characterized in that on the product outlet side of the product container (1) to be assigned to the end of the tubular body (40) an essentially circular head plate (45) with a central, round opening (46) and adjoining it, has one-sided recess (47) leading to the longitudinal slot and widening there, the narrowest point (48) of the recess (47) being dimensionally smaller than the inside diameter (d) of the opening (FIG. 17). 19. Packaging system according to claim 17 or 18, characterized in that the head plate (45) opposite the longitudinal end of the tubular, longitudinally slotted body (40) has a base plate (50) with one-sided, at least thumb-width, in a centrally located semicircle (52) opening (51) has (Fig. 18). 20. Packaging system according to one or more of claims 17 to 19, characterized in that the largest outer diameter of the piston belonging to the application aid (25) (7) relative to the inner diameter of the tubular body (40) with regard to the possibility of canted insertion in the tubular body (40) with easy displacement and captive mounting of the piston (7) is selected (Fig. 19). 21. Packaging system according to claim 20, characterized in that the piston (7) has an outer circumferential edge web (53) with the outer diameter of the bellows (2) slightly exceeding inner diameter (Fig. 19). 22. Packaging system according to claim 20 or 21, characterized characterized in that the bottom (54) opposite the end face of the piston (7) is curved inwards (Fig. 19). 23. Packaging system according to one or more of claims 13 to 22, characterized in that the application aid (25) has the shape of a sales packaging, in particular a blister pack (55) or a folding box (65) (Fig. 20, 22). 24. Packaging system according to claim 23, characterized in that in the case of blister packaging (55) consisting of a deep-drawn part (57) and a cardboard disc (56) or the like, the deep-drawn part (57) in the form of a half-shell-shaped trough (58) forms the bellows (2) receiving tubular body (26) of the application aid (25) and at the same time the guide of the associated piston (7) forms (Fig. 20, 21). 25. Packaging system according to claim 24, characterized in that an approximately thumb-wide cavity (60) is integrally formed on the bottom side of the tub adjacent to the piston (7) and that the back of the blister pack perforations (62) or the like for tearing out an approximately thumb-width, slot-like , up to the lower edge of the cavity (60) extending strip. 26. Packaging system according to claim 25, characterized in that when the application aid (25) is designed as a folding box (65), this wrapper has on one longitudinal side a thumb-wide slot-like opening (63) extending into the bottom (66) of the wrapper (63) ( 22, 23). 27. Packaging system according to one or more of claims 1 to 26 for highly viscous products, for example joint sealants or the like, characterized in that the application aid (25) made of a plastic or metal, dimensionally stable receiving sleeve (68) with a on the outside diameter of Product container (1) matched inner diameter and with a central bore (70) for the product outlet of the product container (1) end wall (69) and means (71) for coupling a piston (7) to the longitudinal end opposite the end wall (Fig . 24). 28. Packaging system according to claim 27, characterized in that the piston (7) to be placed on the lower end of the receiving sleeve (68) with the aid of a spindle (72) or propelling rod (73) in a non-positive or positive manner on the lower end of the receiving sleeve bottom plate (7 ₄ ) is mounted (Fig. 25, 26).

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