DE2152110A1 - Plastic containers, especially for bottles and the like. - Google Patents

Description

Patent attorney patent attorneys

Dr. phil. Gerhard Henkel Dr. rer. nat. Wolf-Dieter Henkel

-757 Baden-Baden Balg Dipl.-Ing. Ralf M. Kern

^ S ^{Dr rer nat} Lothar Feiler

T * l «gr.-Adr.:Elllp«> ldBadM-Bed «· D-8 Munich 90

Eduwd-SchmkJ-Str. 2 ρ - | Tel .: (0811) 663197

Nederlandse Organization voor _{T # J. K.}

Toegepast-NatuurwetenschappeIi jk
Onderzoek ten behoeve van
Nijverheid, Handel en Verkeer

ι ^The Hague, Netherlands *

Plastic containers, especially for bottles and the like «

The invention relates to a container made of plastic, in which in particular a number of bottles, bags, Boxes and similar items of the same type can be arranged separately. Such containers are often stacked on top of each other so that their walls transmit fairly large forces from the top to the bottom edges have to. In addition, the aim is to make the outer walls as smooth as possible for transport and cleaning purposes, if desired, they should also be used as advertising space, so that it is undesirable if they are ribbed and the like. Stiffeners are interrupted.

Furthermore, it is essential that the partition walls provided inside are solid and contribute to the overall strength. When partitions for the articles are also provided at the bottom and not just between the side walls, it is generally difficult to manufacture the containers in simple shapes. Especially if the division is through partitions is omitted up to halfway up from the floor and the floor on the inside with a pattern of partitions is provided, which differs from the construction of the floor and its underside, for example if the latter with

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Ribs and recesses to enable stacking is provided by interlocking shaping, the shapes are due to tapered core pieces and laterally sliding parts so complicated that they are very expensive.

Even a simple container with a closed, unopened one Floor and with a partition that extends over half the cross-section and has no connection with the floor owns, can no longer be produced in a simple manner. However, such containers are very much in demand, and because of their attractively simple structure. In such cases a separate insertable divider is often attached to the walls or bottom of the container, however this is not a satisfactory solution.

In one made known by the French patent specification 1,351,218 Construction, this difficulty is partially solved. That at egg upper edge of a low A lid with openings for individual bottles is attached to the container is and appropriate recesses are provided for the bottles in the container bottom. The lid supports but not the container walls.

In the construction according to US Pat. No. J> 454 4j59, an inner and an outer container are first blown as a one-piece part and this part is then cut into two parts, whereupon the two individual containers are provided with openings in the bases and. inserted upside down and connected with their upper edges, the inner container with its perforated bottom forming a cross-sectional subdivision at about a third of the height of the outer container. In addition to the blow mold, punching must be used in the manufacturing process to form the openings if the one-piece containers have been separated by a cutting process.

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The container according to the Dutch patent application 65 * 05562 has a lid with separated on its upper edge Chamber walls !! which hang down a distance corresponding to about a third of the Belialterhöhe.

In summary, containers are already known which consist of two parts connected to one another at their upper edges, namely an outer container with outside practically completely smooth walls and with a bottom that both on the Underside and inside the container with edges, ribs, webs and the like. As well as is provided with openings, and one Inner container, which is provided with a cross-sectional subdivision on the inside. In these constructions each forms the outer container is the load-bearing part and the inner container is the subdivision or partition for the bottles ο. Like. Objects without participating in the vertical load-bearing function. The disadvantage in any case is that the walls of the outer container under the load acting vertically from the containers stacked on top of one another can bend outside.

The object of the invention is therefore primarily to eliminate the manufacturing and construction disadvantages mentioned. To this end, the invention offers a solution which at the same time has further advantages mentioned in the following description offers.

This solution consists in that the walls of the inner container or the inner shell extend to the bottom of the outer container or the outer shell and that on the outer sides of these walls vertical stiffening ribs are provided which interact with the insides of the outer shell. As a result of this construction, the outer shell is less stressed, because the inner shell participates in the transfer of the vertical load when the containers are stacked one on top of the other. As a result of this interaction, a container with

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put to the crowd or created multi-part walls that are at a certain distance from each other, but support each other and are therefore more easily formed can be without the smooth wall of the outer shell begins to deform under the load.

To produce an even better coupling between the container shells, it is advantageous if on the inside the outer shell further vertical ribs are provided, which cooperate with the stiffening ribs of the inner shell .

To connect the container shells at their upper edges the upper edges of the walls of the outer shell with a snap or Be provided with locking edge, while the upper edge of the inner sole is bent outward and has an inwardly directed bead which is in the locking edge of the outer shell engages when the lower edge of the inner shell rests on the bottom of the outer shell.

Preferably, mutually corresponding openings are provided in the side walls of the two container shells, through which openings handles can be used through it, which offer an additional locking of the two container shells.

Both the outer shell and the inner shell with their cross-sectional subdivision can be made in a very simple casting or Manufacture blow molds that do not need complicated cores or slides.

The construction according to the invention results in an effective way a division of the various punctures and a double-walled container is created, the inner shell of which Forms part which absorbs and transmits the perpendicular force, while the outer shell is on its outside is completely smooth and offers the largest possible area of smooth and even form, which is particularly good for we * purposes

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while a rigid floor will transfer the weight of the contents to the lower edges of the walls. In addition, there are neither outwardly protruding parts on the outer nor on the inner shell, since the stiffeners are exclusively arranged between the walls of the container shells are. It is also possible to use a single model of the outer shell for transport purposes as well as for stacking on pallets, and in these standardized, block-shaped The outer shell can have any shape with different cross-sectional divisions to create accommodation spaces can be used in the inner shell, provided the latter is adapted to the outer sole in terms of height and bead edge.

By arranging foam between the walls of the interior and outer soal can also be an insulated container for ' cooled or heated objects are created.

For a stable connection, the vertical ribs of the outer shell rest against the stiffeners of the inner shell, but it is this is not always necessary. For example, if in between If foam is provided to the walls of the container shells, a very stiff layer construction is automatically created. The inner shell can be provided with vertical corrugations, which the outer shell in localized places and at the touch bottle partitions arranged at a greater distance from the outer shell. In this case the top edge must be designed so largely in adaptation to the outer bottom edges that a stable stacking continues is possible.

The following is a preferred embodiment of the invention explained in more detail using a drawing. Show it:

Fig. 1 is a perspective view of a container, for example a bottle crate with its inner container or shell above the outer container or shell

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is shown

Pig. 2 a pig. 1 similar representation, but in which To illustrate the interior, a front wall of the inner and outer shell has been removed,

FIG. 5 shows a section on an enlarged scale which shows the interaction between the inner and outer shell,

Fig. 4 shows a horizontal section through the container walls and

Fig. 5 is a section through the walls and a handle, the is used for additional locking between the two container shells.

The container shown in the figures has an outer shell 1 with walls 2, 3 projecting upwards practically perpendicularly from a floor 4. Under the rigid floor 4 are edges 5 are provided between these recesses 6 formed. This shape of the bottom 4 enables the containers to be stacked, not only exactly perpendicular to one another, but also in a staggered scheme. The walls 2 and 3 are completely smooth on their outer surface, and only in the short side walls 3 rectangular openings 7 are provided.

On the inside, vertical ribs 8 are provided which establish a connection with an inner shell 13. the However, ribs 8 are so thin that no cavity marks appear on the outside of the container or the outer shell 1.

On the inside of the floor 4 are close to the walls 2 and 3 longitudinal ribs 9 and short transverse ribs 10 are provided, which fix the underside of the walls of the inner sole 13 capital. The. Outer shell 1 contains the actual bottom 4, which acts as a load-bearing element for the content serves, and is also provided with only light walls 2,3,

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which are flat on the outside and thus as advertising space can serve. A slight thickening with a son apron 11 is provided only on the upper edge of the outer shell 1. The thickness of the walls 2 and 3 can be chosen to be minimal and for example only about 1 ram, since these walls do not have a load-bearing function, but must be smooth. For the sake of clarity, there are no essential cross-sectional subdivisions for on the inside of the base 4 Bottles and the like. Provided, which could, however, be arranged without difficulty «since only the necessary recesses in the inner mold for the outer sole 1 needed to be provided without the need for special mandrels. Only to show the possibilities are in Fig. 2 low subdivisions 12 for. Bottles indicated.

In the smooth-walled outer shell 1, an inner shell I3 with walls 15,16 used and set therein, the - with the exception of one located about halfway up Compartment division 14 for bottles or boxes - is completely smooth on the inside. On the outer surfaces of the walls 15, 16, which are generally thicker than the walls 2 and 3 of the outer shell 1, are several relatively strong perpendiculars Stiffeners I7 are provided, each with a groove 18 are provided, in which a rib 8 of the outer shell 1 engages. At the top of the inner shell 13 let a wider one Flange 19 is provided on which stacked containers are able to rest and with a beaded edge drawn around 20 is provided. In the short side walls 16 of the inner shell 13 bind at the same height as the corresponding one Openings 7 of the outer sole 1 openings 21 formed.

The inner sleeve I3 forms the actual load-bearing element for absorbing the perpendicular loads and is therefore provided with stronger stiffeners I7 and with the stiffening compartment division 14. Even so, the QhQ or blow mold

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for the production of this container part very simple, since the inner shell \ J> has no bottom and the moldings in the amount of compartments may be shared 14th Laterally displaceable mold cores, which would otherwise be required to overcome the molding problems, are completely superfluous here. In fact, the casting or blow mold can have vertical walls of considerable height, since the inner shell 15 is formed on the inside at two separate points. Above and below the compartment division 14, the slopes run in opposite directions, so that the differences in wall thickness do not need to be great. The material distribution and the material flow when filling the casting or blow mold are also very advantageous. Since the casting or blow molds are simple and the construction of the container itself is simpler and the container has smaller wall thicknesses, the production time for both container parts is significantly shorter than for a one-piece container that meets the same strength requirements.

When both container parts or shells are completed, they are inserted into one another and united with one another. The lower edges of the walls I5 and 16 of the inner shell 1j5 come to lie behind the longitudinal ribs 9 and over the transverse ribs 10, while the stiffeners 17 with their grooves. 18 over move the ribs 8. At the same moment in which the walls 15 and 16 engage behind the longitudinal ribs 9, also engages the bead edge 20 in the snap edge 11, whereby the definition is established. As an additional locking means and to enable better handling a handle 22 is now inserted into the openings 7 and 21, which with the help of ribs 2 ^, 24 securely in the openings is being held. It is then no longer possible to remove one container part or shell from the other or the other as the connection is complete.

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Considerations can be made for indoor and outdoor soles depending on Different colors and materials can be selected to meet the specific needs. In general, it can be in an outer shell each inner shell with different colors and different cross-sectional subdivisions for different Types of objects are used while the external shape always remains the same, which is an advantage of Represents standardization.

If the container is to be used for cylindrical bottles, the inner shell 15 can be provided with walls 15, 16, which are corrugated according to the curvature of the bottles. In this case, the stiffeners or ribs do not need I7 to be present because the inner shell I5 through the corrugations itself is stiffened and touches the wall of the outer sole 1 at the vertices of the corrugations.

With regard to the outer shell 1 and the inner shell 1} with one another connecting handle 22, it should be noted that this can also consist of two parts, the inner and introduced into the openings 7 and 21 from the outside ″ be interlocked with each other.

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Claims (3)

Patent claim Mj plastic container to hold bottles separately, Bags, boxes and the like. Qegenstäiden each the same Kind, which from an outer shell, c * i.a with practical smooth outer walls and a floor which both has edges, ribs and the like and openings on the underside as well as within the outer shell, and consists of an inner shell, the inside with a cross-sectional subdivision or compartmentalization is provided, characterized in that the walls (15,16) of the Inner shell (I3) extend to the bottom (4) of the outer shell (1) and that on the outer sides of these walls vertical stiffeners or ribs (17) are provided which interact with the insides of the outer shell (1). 2. Container according to claim 1, characterized in that on the inner sides of the outer shell (1) vertical ribs (8) are provided which cooperate with the stiffeners or ribs (17) of the inner shell (13). 3. Container according to claim 1, characterized in that the Upper edges of the walls (2,3) of the outer shell (1) are provided with a snap edge (11), while the upper edge of the Inner shell (13) is bent outwards and has an inwardly directed bead (20) which is inserted into the snap edge the outer sole engages when the lower edge of the inner sole (13) on the bottom (4) of the outer shell (1) rests. -11- 209817/0995 Container according to claim 1, characterized in that
In the side walls (3; 16) of both container shells (1,15) corresponding openings (7 or 21) are provided through which handles (22) connecting the container shells can be passed. 209817/0995 Blank page