JPH07149335A - Bottle-form plastic container - Google Patents

Abstract

PURPOSE: To provide a bottle-like container which is inexpensive when filled, wherein bottles with container parts stacked can be supplied to a filling plant and joined together, and stable bottle forms can be obtained. CONSTITUTION: This bottle-like plastic container 1 includes two container parts 3, 4 which are welded together and produced in a material-saving manner by deep-drawing a plastic sheet. The weld extends in easily manufacturable manner along a flange-like projection, while all round edges of the two container parts 3, 4 extends in a single plane. The container parts 3, 4 can be transported in a space-saving manner to a filling plant as a result of their easy stackability, where they can be easily joined together. Filling can take place into a still open, shell-shaped container part 3 virtually comprising the entire container content, so that filing at high speed is possible. A deep-drawn base part 7 fixed under a bottom wall 12 can ensure standing stability of the thin-walled plastic container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closure means located in the top region of a container, a bottom region of the container provided for vertically and stably placing the container, and a continuous region from the bottom region to the top region. Stretched and formed from a single sheet 2
A bottle-like plastic container for a flowable or free-flowing substance having a joining seam interconnecting the engaging surfaces of the flange-like edges of two container parts.

[0002]

2. Description of the Related Art Since a known bottle-shaped plastic container has a shape having an undercut around the opening, it is manufactured by blow molding with a mold having an undercut. Since this manufacturing method consumes a relatively large amount of plastic material, it is common to specifically manufacture a refillable container that allows the consumer to refill the contents of the bottle. This makes it possible to reduce the amount of wasted plastic. An empty refillable bag weighs only about 15 g, whereas a 1 liter container of the type described above weighs about 80 g. However, it has the disadvantage that the consumer has to work on his own to refill the container, so that the consumer purchases a new, filled container without refilling. Therefore, an attempt to effectively reduce the amount of wasted plastic results in a much lower theoretically possible weight ratio of 80 g: 15 g.

In Swiss Patent No. A468282, an upper container part and a lower container part are joined together along a horizontally guided flange-shaped edge so that a bottle-shaped plastic container can be manufactured by a simple deep-drawing process. It is proposed to manufacture the container part. In this process, the thickness of the plastic sheet is significantly reduced during deep drawing, as the container part for the shape of the bottle is formed relatively deep, and a relatively thick sheet is first used to ensure sufficient strength. It has the disadvantage of having to be used for.

Belgian patent A 562 747 therefore proposes a vertical arrangement of the flange-like edges of the two container parts. However, in this regard, to provide a flat surface for erecting in the bottom area of the container,
It may be necessary to trim the flanged edge inward in the bottom area of the container. However, the two symmetrical container parts have an undercut by being molded in this way, which makes them difficult to manufacture and the container parts cannot be overlapped, and the flange edges are accessible for joining the container parts. It has a very serious drawback that it is not easy to do. Therefore, such containers are supplied to the filling station in the form of finished containers, thus requiring considerable space to store and transport them and are therefore expensive.

[0005]

SUMMARY OF THE INVENTION The present invention provides a filling plant, in particular with thin-walled container parts, in the stacked state,
It is an object of the present invention to provide a bottle-like container of the type described above, which is manufactured at a low cost in a filled state, in which a stable bottle form is obtained by joining therewith.

[0006]

According to the invention, this object has the object of having the same shape with which at least one of the two container parts interconnected by a joining seam can be superposed, and thus the flange part of the container part. This is solved by the fact that the edges of the bulge project outwards beyond the container wall and also in the bottom region of the container.

The flange-like edge protrusions on all sides, including the bottom region, allow easy and reliable interconnection of the two container parts by joining or gluing in a filling plant for bottles or bags. Become. Due to the longitudinal division of the container, particularly thin plastic sheets or films can be used for the production of the container part, thus saving considerable plastic material.

The process for producing a filled container of this type is described in which two container parts are placed one on top of the other and fed to a filling plant, the container having substantially the size of the container and a flange-like edge in the filling plant. It is characterized in that the part is filled and subsequently closed by being joined to the flange-like edge of the other container part.

[0009]

The many advantages of the present invention, which go far beyond the solution of the problem raised in part, are explained in more detail below with reference to an embodiment and the accompanying drawings.

The bottle-like container 1 of FIGS. 1 to 9 consists of two container parts 3, 4 which are positively joined by a joining seam 2 which is closed continuously. Since these container parts 3, 4 are formed from a thin sheet or film by deep drawing, space is saved for storing similar container parts and can be transported to a filling plant.

In the embodiment of the invention shown in FIGS. 1 to 11, the container part, ie one of the container parts 3, 3 ', at least encloses substantially the entire volume of the container in the form of a shell,
A plurality of similar container parts 3, 3 ′ are shaped so that they can be stacked on top of each other as in FIGS. 6 to 11 to save space. Since the other container part 4, 4'has a flat shape, such container part 4, 4'is also stacked and stored and transported to save space. This flat container part 4, 4'forms a flat, upward-facing longitudinal container wall and is used as a closing wall for the other shell-shaped container part 3, 3 '.

Advantageously, both container parts 3, 4 and 3 ', 4', which are similar to those of the further embodiment of the invention of FIGS. 12 to 21, are filled for liquid or particulate matter. The space-saving storage is particularly effective in saving the storage space of the container parts 3, 4 and their transport capacity from the manufacturer to the filling plant, since they are joined only in the plant. The flange-like projecting edges 5, 5 ′, 5 ″ on all sides of the container parts 3, 4 and 3 ′, 4 ′ and the resulting simple joining method have advantageous effects.

Furthermore, by the simple joining method in the embodiment of FIGS. 1 to 11, rather than filling the containers 1, 1'through a small pouring opening, two container parts 3,
It is possible to fill the container through the very large opening of the closed shell-shaped container part 3 which is closed only by the joining of 4 and 3 ′, 4 ′. Since the filling opening is so large, the filling speed is considerably increased in the co-designed automatic filling plant. Such advantages are particularly important when filling containers with slightly foamy liquids.

The at least one shape of the container parts 3, 4 according to the invention also has very important advantages for the method of manufacturing the container parts 3, 4. This non-undercutting shape makes it possible to produce the container parts 3 and 4 quickly and cost-effectively while saving material by deep drawing a thin plastic sheet, which is dimensionally stable. A 1 liter container of container parts 3, 4 and 3 ', 4'made from a flexible PET plastic sheet weighs only 22 g. Assuming that the reduced dimensional stability can be tolerated by the deep-drawing method, it is possible to considerably reduce the almost uniform wall thickness over the entire surface of the container parts 3,4. As a result, the weight of the container 1 according to the invention is almost as light as the refillable bag described above.

Therefore, in the containers 1, 1'according to the invention, the refillable bag is not necessary since it combines the advantages of the conventional plastic bottle and the refillable bag. This thin wall feature allows the plastic container 1 to be crushed like a refillable bag after the contents, e.g. liquid soap, have been used up, saving space for waste utilization.

In addition to simplifying the procedure and saving material, the production of container parts by deep drawing allows for the use of particularly convenient plastic materials for production purposes, and of the type There are additional advantages such that the molding process for cut molding may or may not be difficult to process.
These include multi-layer sheets, which can advantageously combine the opacity of the sheet layers, such as airtightness, and the printability characteristics. The outer layer of the sheet is made of reusable plastic, only the inner layer needing to meet the hygiene requirements regarding the filling.

A further advantage obtained from the shape of the container part is the use of known processes which have the advantage of being able to decorate and engrave the surface. That is not possible with conventional plastic bottles. Thus, for example, a paper advertisement is bonded to the container part on the deep drawing tool.

By producing the container by deep-drawing technology, in the case of containers of identical shape, by simply replacing the bottom part of the deep-drawing tool, eg 1000,750,
It is possible to easily manufacture containers with different volumes of 500 ml as shown in FIG.

By producing the plastic sheet by deep drawing, the container parts 3, 4 and 3 ', 4'have flat flange-like edges 5, 6 and 5', 6 ', and thus the finished plastic. The advantage is that such edges 5, 6 can be joined easily and reliably in the manufacture of a container. The flat shape of the edges 5, 6 makes it possible to supply the sealing wax particularly easily.

It is possible to form additional parts, for example the base part 7 and the closure part 8, from one and the same sheet material in one or both of the container parts 3, 4 in a simple one-step operation according to the deep-drawing method. Yes, it is placed in the use position by being hinged along the perimeter of the edges 9,10.

In the embodiment of FIG. 1, the base part 7 and the closure part 8 are molded into a larger one, ie a shell-like container part 3 having virtually the entire contents of the container, these being provided on a flange-like edge 5. Connected. Two flange-shaped edges 5,
Since 6 rests on each other during the joining of the container parts 3, 4, the identically shaped base part 7 and closing part 8 are of a deep-drawn smaller part as shown in the embodiment of FIG. Alternatively, it can be joined to the flange-like edge 6 of the flat container part 4.

The base part 7 which is opened and closed around the edge 9 is
It has at its outer end a fixing element 11 which is shaped as a projection of the sheet material, which fixing element 11 forms a fixing recess in the base wall 7 of the container part 3 when the base part 7 is opened and closed. It is fixed at 14. As a result, the base part 7 is held in a position perpendicular to the flat container wall 15, so that the container 1 is provided in a stable upright position.
To ensure positive engagement, the base portion 7 comprises a convex surface along the outer edge 17 corresponding to the roundness 16 of the bottom wall 12. The base portion 7 has several flat protrusions 18, 19, 20 forming the base. The deep-drawn edge 21 of the base part 7 contributes to a stable bottom support of the plastic container 1, which extends flush with the bottom surface of the projections 18, 19, 20.

In the embodiment of FIG. 3, if the consumer wishes to remove the contents of the container, the pouring opening of the plastic container 1 is made by the consumer cutting off a small circular projection 23 in the sheet wall. In order to reseal the pouring opening as a result, the tongue-shaped closure part 8 molded on one edge of the container parts 3, 4 has a protruding closure part 24 with a slight undercut side wall 25 at its end. In the partial area, which is fixed therewith on the correspondingly shaped projection 26 of the upper container wall 27.

In addition, a projection forming several overlapping small shoulders 29 is provided on the wall of the larger container part 3, which is mutually exclusive during the overlap so that it can be easily removed from the stacked state. Limit the depth of.

The flat smaller container portion 4 shown in FIGS. 4 and 5 has also been deep drawn so that in addition to the flange edge 6 said container portion 4 has a deep drawn edge 30 extending into the interior of the container. Has a shape, which is the larger container part 3
Fixed in the opening of the container, so that it is located in the center of the container part 3 and the stability of the plastic container 1 is increased around the joint connection.

Furthermore, a more detailed design of the walls of the container parts 3, 4 having upwardly slightly tapered and projecting areas is freely available for aesthetic design. The flat wall surface provided on the smaller wall portion 4 is particularly suitable for printing and containing advertisements. The container 1 is also well-positioned on the object on the above-mentioned flat side, or supplied in a space-saving manner against a wall, for example a shelf wall.

The embodiment of FIGS. 8 and 9 differs from that described above in the construction of the pouring opening and its closing portion 32. Although not visible in the drawing, the pouring opening is located in a small threaded connection made by injection molding of plastic, which at this point turns over the upper container wall 33.
Extending through the cutout opening of the flange 35
Is bonded or securely bonded to a part of the container wall 33 described above. The closure 32 is made as a screw lid, so that the container opening is reliably resealed.

FIGS. 10 and 11 show that the advantages of the invention described can be achieved in a simpler practical embodiment, the larger container part 3'without the undercut being bottle-shaped. Container 1'is formed and is positioned stably, although there is no separate base portion with a surface for upstanding.

This container 1'has the largest horizontal cross section in the bottom region, which is widest in a direction substantially perpendicular to the flange-like edge 5 ', and tapers slightly upwards therefrom. And a slightly flared portion 37, after which it ends upward with a more inclined roof-like ramp 38. Container 1'is this rounded slightly flared portion 3
7 makes it easier to handle. The closure 39 is the inclined surface 3
8, which is located in the upper region of 8, for example a rotatable closure lid 40
And has two openings 41, 4 to rotate to open
Match 2

The embodiment of FIGS. 12 to 21 has two container portions 43, 44 of at least approximately equal size, so that the flange-shaped edges 45, 46 are in the plane that divides the container longitudinally symmetrically. Is located. In such a container top region 47 at least one ramp 5 extending the full width of the container
It tapers over 7, 58, so that the container tapers upwards like a known filled flat bag. This upper wedge-shaped balancing or balancing space is filled with unfilled material. Subsequently, a space is created in the filled container as the unfilled material is compressed during storage.

Upper container area 4 of the embodiment shown in FIG.
7 is not symmetrical and one of the container parts has a narrow, almost horizontal top surface 48 on which the closure means is located. The closure part 50 consisting of one closure part 51 and a circular grip part 52 is deep drawn and cut from the same sheet as one of the two container parts 43,44.

Container part 4 of the embodiment of FIGS. 13 to 21
Both 3, 44 have in each case base parts 54, 55 which hingedly open and are fixed below the bottom of the container, which together provide a high stability for the container to stand upright. Secure.

The container of the embodiment of FIGS. 13 to 21 is shaped symmetrically, the deep-drawing container parts 43, 44 are substantially identical, in each case an inclined surface 57, 58 in the upper container region. And they are oriented at the same angle with respect to each other and correspondingly form a wedge-shaped equilibrium space which allows a fast filling of the container.

The container shown in FIG. 13 has a closing nipple 59 arranged at upper and lateral container angles, which closing nipple 59 is cut to open the beginning of the container.

The container shown in FIGS. 14 to 17 has a deep drawn closure flap 61 which is hingedly bent by bending it from an upper container edge 60, which is one of the ramps 57, 58. The cutout opening 62 having substantially the same size is closed. Preferably, in the closed position below the closure flap 61 there is provided a closure membrane, for example formed from a thin aluminum foil, which serves as a tapered roof closure, which is bordered inside the opening 62. Closed to the edge 64.

The closing position of the closing flap 61 shown in FIG. 14 is ensured by some fixing means. First
The locking means are obtained through a deep-drawn grip tab 65, which is pressed into a correspondingly shaped and slightly undercut recess in the wall of the container. The second fastening means is obtained on the opposite side of the opening 62 by the grooves 67, 68 molded in the opposite direction of the film material, so that the ribs pushed through the grooves on the side of the other sheet are in the other groove. Fixed. In addition, the edges of the closure flap 61 are fixed on all sides to edges that are edged inside the opening 62.

A side view of two identically shaped container portions 44 shown in FIG. 16 shows a base portion 69 and a closure flap 6.
1 and 1 to show how the deep drawn portions 44 above are superimposed on each other. FIG. 17 shows three views of another container part 43 of the container of FIG. 14 superimposed with another container part 43, from which a corresponding number of containers are manufactured.

Due to the relatively large opening 62, the container shown in FIG. 14 allows the free-flowing substance to be withdrawn from the container by means of a spoon, which can advantageously be used in a horizontal position. is there.

The container of the embodiment of FIGS. 18 to 21 does not have a cut out opening, but instead both container parts 4
The upper edges 71, 72 of 3, 44 are separated from each other, pulled apart and opened like a flat paper bag. For this purpose, in each of the two container parts 43, 44, a finger grip 73, 74 is formed which preferably extends over the part of the ramp 57, 58. The finger grips 73,74 are large enough to hold the filled container when it is maintained in the pouring position when it is opened. Two reinforcing ribs 75, 76 extending outwardly from each of the finger grips 73, 74 guide outward the pull opening force of the grips 73, 74 described above.

Two edges 71, 7 for opening the container
To ensure separation of the bond between the two, the outermost edge portion with the joint or glued connection between the two edges is cut off, or simply the edges 71, 72 are separated and the two edges are separated. It occurs either by breaking the bond or the bond between the container parts 43,44.

In order to ensure a resealing of the closure between the two edges 71, 72, one of the container parts 43, 44, in the embodiment shown, to the container part 43, preferably inclined downwards. There is a packing washer 77 that positively engages a correspondingly shaped groove 78 in the other container portion 44. A partially enlarged view of FIG. 19 shows the above-mentioned closed structure of the container closure.

Reopening of the container shown in FIGS. 18-21 is accomplished by the pressure at the two ends of the closing edges 71, 72 which bend outward to release the mouth opening 80.

The essentially symmetric container embodiment of the present invention shown in FIGS. 12-21 has a bag-like shape and is therefore to be filled in an existing filling plant provided for bag filling. Is possible. Differences from the shape are possible in many variants, in order to obtain a particularly aesthetic effect. In part because of the design of the container closure, a container which is not a bag according to the invention is advantageously used for both liquids and both granular and pasting substances.

The container according to the invention is advantageous during handling,
It combines the advantages of rigid and flexible containers, which behave like rigid packs, but are compactly compacted for disposal and have very low waste. Producing a container from sheets can further reduce costs, and decoration and engraving can be provided before deep drawing.

[Brief description of drawings]

FIG. 1 is a shortened plan view of a larger container portion enclosing substantially the entire volume of the container having a molded base portion and a molded closure portion.

2 is a top view of the container portion of FIG. 1 without closure.

3 is a side view of a completed container including the container portion of FIG.

FIG. 4 is a view of the smaller container portion relative to the portion of the container wall having a molded base portion and a molded closure portion.

5 is a side view of the container portion of FIG. 4. FIG.

FIG. 6 is a side view of the two larger stacked container portions.

FIG. 7 shows the larger container part for a 750 ml container and part of a 500 or 1000 ml container part.

FIG. 8 is a shortened plan view of another embodiment of a larger container portion enclosing substantially the entire volume of the container having a molded base portion and a molded closure portion.

9 is a side view of a completed container having the container portion of FIG.

FIG. 10 is a side view of a further embodiment of the bottle-shaped container of the present invention.

FIG. 11 is a view of the two larger stacked container portions of the container of FIG.

FIG. 12 (a) is a front view of a further container of the present invention having a joining line in the center, (b) is a side view of a further container of the present invention having a joining line in the center, (c) 8) is a plan view of a further container of the present invention with a joining line in the center.

FIG. 13 (a) is a front view of a further container of the present invention having a central joint line and a symmetrical shape; FIG. 13 (b) is a front view of a further container of the present invention having a central joint line and a symmetrical shape; FIG. 3C is a side view of the container according to the present invention, and FIG. 7C is a plan view of a further container of the present invention having a joining line in the center and a symmetrical shape.

FIG. 14 (a) is a front view of a further container of the present invention having a central bond line and a closure covering the upwardly sloping surface of the container, and FIG. 14 (b) is a central bond line and FIG. 6 is a side view of a further container of the present invention in which the closure covers the upper sloping surface of the container, (c) of the present invention having a central bond line and the closure covering the upper sloping surface of the container FIG. 6 is a plan view of a further container.

FIG. 15 is a plan view of one of the container portions of the container of FIG.

16 is a side view of the two overlapping container portions of FIG.

17 (a) is a front view of the second container portion of the container of FIG. 14, FIG. 17 (b) is a side view of the second container portion of the container of FIG. 14, and FIG. 2 is a plan view of a second container portion of the container of FIG.

FIG. 18 is a front view of a further container of the present invention having a connecting line in the center and having a closure that is opened by being compressed.

FIG. 19 is a side view of the container of FIG.

FIG. 20 is a plan view of the container of FIG.

FIG. 21 is a plan view of the container of FIG. 18 with the container closure open.

[Explanation of symbols]

1, 1 '... Bottle-shaped container 2 ... Joining seam 3, 3', 4, 4 ', 43, 43', 44, 44 '... Container part 5, 5', 5 '', 6, 6 ', 21, 45, 46, 64
... Edge 7 ... Base part 8, 24, 32, 50, 51 ... Closing part 9, 10 ... Edge 11 ... Fixing element 12 ... Bottom wall 14 ... Fixing recess 15 ... Container wall 16 ... Roundness 17 ... Outer edge 18 , 19, 20, 26 ... Projection part 23 ... Circular projection part 25 ... Undercut side wall 27, 33 ... Upper container wall 29 ... Shoulder 30 ... Deep drawing edge part 35 ... Flange 37 ... Spread part 38, 57, 58 ... Inclination Surface 39 ... Closing device 40 ... Closing lid 41, 42, 62, 80 ... Opening 47 ... Top area 48 ... Top surface 52 ... Circular grip portion 54, 55, 69 ... Base portion 59 ... Closing nipple 60 ... Upper container edge 61 ... Closing hanging plate 65 ... Grip tab 67, 68, 78 ... Groove 71, 72 ... Upper edge 73, 74 ... Finger grip 75, 76 ... Reinforcing rib 77 ... Packing washer

Claims (10)

[Claims] 1. Closure means located in the top region of the container (1), a bottom region of the container (1) provided for a stable vertical placement of the container (1), and the bottom region. To the top region continuously, the joint seam comprising a flange-like edge (5) of two parts (3, 4) of the container (1) molded from a sheet.
Of the container parts (3, 4) which have the same shape and which can be overlapped with at least one of the two container parts (3, 4) interconnecting the engaging surfaces of which are connected to each other by the joint seam. 4) the flange-like edge (5) projects outwards over the wall of the container (1) and the container (1)
A bottle-like plastic container for a flowable or free-flowing substance adapted to project over the bottom region of the. 2. One of said container parts (3, 3 ′) encloses a space which substantially corresponds to the total volume of said container (1, 1 ′) and thus the other said container parts (4, 4). The container according to claim 1, wherein the ') forms a substantially flat wall surface. 3. A locating edge (30) in which the flat container wall (15) is deep drawn with respect to the flange-like edge (5).
A container according to claim 2 bordered by. 4. A base part (7, 54, 55) is molded on at least one of said container parts (3, 4; 43, 44), which is a plastic container to a base position via a hinge-like connection area. The bottom wall (12) and the base part (7, 54, 55) are provided with fixing means (11, 14) that open and close underneath and are fixed to each other, the base part (7, 5)
4, 55) are characteristic container parts (3, 4, 43, 4)
Container according to claim 1, which is deep-drawn from the same sheet as 4). 5. The flanged edge of the container portion (43,44) extends in the mid-plane of the container, the container extending over at least one roof-like slope (57,58). A container according to claim 2 or claim 4 which tapers upwardly in a wedge shape in the region. 6. A closure element (8,61) is molded in one of the container parts (3,4,43,44), which position closes the pouring opening (62) of the plastic container (1). A container according to claim 1 or claim 5, which is opened and closed, the closure element (8,61) having a deep drawn shape from the same sheet as the characteristic container (3,4,43,44). 7. The pouring opening (62) is cut from the beveled area of the inclined surface (58) and a closure film (63) is provided as a closure which cannot be inadvertently tampered with. A container according to claim 5 or claim 6, which is joined to one edge of the container, the size of the container opening (62) being substantially equal to the size of the inclined surface (58). 8. The container closure comprises the container portion (43,
44) two flange-like engaging edges (7
1, 72), one finger grip (73, 74) in each case facing the container in the vicinity of both said edges (71, 72) for separating said closure edges A container according to claim 5 molded on the side. 9. Groove-like projections (77, 78) are molded in the same direction on the engaging edges (71, 72) of the container part (43, 44) forming a resealable closure. And they engage each other in a sealing manner.
Container according to. 10. Two container parts (3, 4) superimposed on one another are fed to a filling plant, said filling plant being one container part (3) essentially having the size of the container and a flange-like edge. A process for manufacturing a filled plastic container, which is closed by filling with part (5) and subsequently being joined to the flange-like edge (6) of another container part (4).