DE2930361A1 - LOCKING LID FOR DRUM-SHAPED CONTAINERS - Google Patents

Description

ONO PH / HP 879

- 4 description

The invention relates to closure lids for containers, which consist of a plastic part which has a bent edge for cooperation with the container opening, and a flat printed label affixed to the surface of this part is exist. In particular, the invention relates to such closure lids for tubs and detergent containers.

The sale of caustic solutions, detergents and the like in the form of barrel-like containers has increased in recent years increased significantly. To identify the brand and, if applicable, other information related to the packaged goods on the To apply sealing cap, it has been suggested that plastic material to be printed directly; however, this has proven to be of little advantage for various reasons: In particular the printing or the embossing is expensive, the quality is mediocre, with considerable waste because of the complicated Form of the sealing cap is obtained. This is why a label is often made from cardboard or from another sheet-like label Material printed and glued to the plastic part.

Throw these so closed barrel-shaped containers have serious transport problems because they are very sensitive to bumps, especially side bumps; in order to prevent their denting, one must increase their wall thickness as well as the strength of the closure cover. now are the plastic cover described above between the circumferential bent edge formed flat, with the Label is stuck on this tarpaulin surface. From this it follows that the strength of the closure cap only with great Expenditure of plastic material and / or by using a solid cardboard of very good quality or another very good one

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ONO PH / HP 879

resistant and therefore quite expensive material can be achieved.

The present invention is based on the object to provide a closure cover of the type described at the outset which, at low manufacturing costs, has great strength having. This object is achieved by the closure cover according to claims 1 to 10. According to the invention the closure lid is characterized in that the actual lid part has one or more bulges perpendicularly has out of the actual cover plane, to which the label is applied, so that the cover is box-shaped Structure.

The invention is explained in more detail with reference to the following figures.
15th

Fig. 1 is a cross section through one according to the invention Sealing cap;

FIG. 2 is an enlarged partial section according to FIG. 1; 20th

Fig. 3 is a reduced plan view of the closure cap of Fig. 1;

Figs. 4 are top views like FIG. 3 of other embodiments ^and forms of the closure lid according to the invention, the label being omitted for better understanding.

The closure cover according to FIGS. 1 to 3 consists of two parts, namely the main part 1 made of plastic material and a label 2 made of flat cardboard.

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The part 1 has predominantly a substantially flat bottom 3 and is U-shaped with a bent edge Cross section 4 provided.

Some projections 5 protrude from the bottom 3, these projections being designed in the form of a truncated cone which is open at the bottom and which narrows towards the top at a small angle and has a small horizontal plane 6 above. According to Fig. 3, a centrally located projection 5 ^a and eight projections 5 are provided in this embodiment, which are regularly arranged on a circle C around the centrally located projection 5 ^a , the radius of this circle about half as large as the radius of Closing cover is.

According to FIG. 2, the bent edge 4 has a wall 7 which extends upwards from the edge of the base 3. This wall widens at 7 ^a and then rises vertically to 7. An upper horizontal area 8 connects the upper area of the wall 7 with the vertically downward, larger diameter wall 9 Enter the interior of the closure cover 1, where they extend slightly above the base 3. These depressions, which are separated by semi-cylinders 11 with a vertical axis open to the inside (FIG. 3), each form an upper flat surface 12 which is located in the same plane as the small flat surfaces 6 of the bulges 5. Together, the surfaces 12 form a discontinuous annular support shoulder.

The label 2 is a cardboard disc, the surface of which is, for example, polychrome printed, and its diameter equal to or slightly smaller than the inner diameter up to

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ONO PH / HP 879

293036ΐ

Wall 7b is. The lower surface of the disc is glued to all of the bulges that rise from the bottom 3, that is to say to all of the small surfaces 6 of the projections 5 and all of the surfaces 12 of the cavities 10. Any suitable type of bonding can be used for this purpose, in particular thermal welding; therefore, when the part 1 is thermoformed, it is possible to thermoweal the carton to the plastic material during thermoforming, so that the composite closure lid can be manufactured in one step. In this case, when working under pressure, the air located between the label 2 and the bottom 3 must be able to escape; this can be achieved on the one hand in that cutouts are provided in the carton, or on the other hand in that the air exits through the half-cylinder 11 by using a label with a somewhat smaller diameter. These two variants are ^{symbolized by the lines 2a} and 2 in FIG.

If the element (1) is made of injection-molded plastic material, the label 2 is applied after separation. Advantageously, this is done beforehand on the appropriate points A heat-castable lacquer or "hot-melt" is applied to the lower surface, the adhesive being active under the action of heat are. Then the pane is applied to the element 1 and the bond is made with heated tools and by contacting the lower surface with the small surfaces 6 and the surfaces 12 causes.

The cap thus obtained has a box-shaped structure with a small thickness of the plastic material for part 1 and, if a thin cardboard box is used, of relatively mediocre quality for label 2,

ie has very high strength at very low manufacturing costs. If this lid ^{1 is} made of plastic material, cardboard

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ONO PH / HP 879

or a combination of both on a barrel-shaped one Applied container for washing powder, for example, its bent edge 4 overlaps the upper boundary edge of the Container. The closure cap according to the invention not only has substantial strength in itself, but also provides it this equally to the upper part of the barrel-shaped container against lateral deformation, which makes it possible, too to reduce the thickness of the wall of the barrel-shaped container, and thus its manufacturing costs.

In FIGS. 4 and 5, in which the label 2 has been omitted for the sake of clarity, other embodiments are shown for the bulges or projections which are suitable as a support for the label instead of the projections 5 to 5. In Fig. 4, a central bulge 5 ^a and four arcuate bulges 5 ^{C are} provided, which each make up a little less than a quarter of the circle C. In Fig. 5, a cross-shaped bulge 5 is provided, with four bulges 5 ^{e being provided} in a radial orientation between them. These projections 5 to 5 are open at the bottom, the element 1 being thermoformed. Other bulge shapes that have the same effect according to the invention are also possible.

In the various embodiments, the base part the wall 7 form an annular groove or recess into which the edge of the label 2 can snap. Through this the gluing on the surfaces 12 can be reinforced or replaced.

In appropriately modified embodiments of the invention, the shape of the closure cap can, for example for containers with a rectangular cross-section, such as for dairy products.

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Claims (10)

WIlHELMo & KiLiAN PATCNTAN WA LT ΙΞ DR. ROLF E-WiLHELMS DR. HELMUT KiLIAN RAErE O 8OOO MUNICH TELEPHONE (O Ε ·)) - ".? A 3 73 · TCLF-OnAMMt PATflANrj [.-, 'i'-miN PH / HP 879 ONO
28700 Auneau - France Closing lid for barrel-shaped containers Priority: July 28, 1978 - France - 78 22 427 PATENT CLAIMS t 1. ) Closure lid for barrel-shaped containers, in particular for "" Warschmittelbehälter, consisting of a main part made of plastic material with a bent edge to interact with the wall of the container in the area of its opening, and a printed flat label that is on the surface of the Main part is attached, marked cn net by one or more upwardly extending bulges (5, 12) of the main part (1) on which the label or on which 909886 / -0886 ONO PH / HP 879 (2) is attached, the closure lid being a box-shaped Has structure. 2. Closure cap according to claim 1, marked is characterized by sticking the label (2) on the bulges (5, 12). 3. Closure cap according to claim 2, characterized in that that the bulges (5, 12) down are open. 4. Closure cap according to at least one of the claims 1 to 3, characterized in that the main part (1) has an annular support shoulder (5, 12), with which the edge of the label (2) cooperates. 5. Closure cap according to claim 4, characterized in that the annular shoulder (12) is formed as part of the bulges (5, 12). 6. Closure cap according to at least one of the claims 1 to 5, characterized in that the main part (1) has an annular groove or groove for locking with the edge of the label (2). 25th 7. Closure cap according to at least one of claims 1 to 6, characterized in that at Thermoforming of the part (1) the interior of the box-shaped structure (3-2) is in communication with the atmosphere. 909886/0886 ONO PH / HP 8. Closure cap according to at least one of the preceding claims, characterized in that that the label (2) has a slightly smaller diameter than the annular shoulder (12), the latter being peripheral Has openings (11). 9. Closure cap according to claim 7, characterized by openings (2 ^a ) in the label (2). 10. Closure cap according to at least one of the preceding claims, characterized in that that the label is made of cardboard. 909886/0888