奥地利专利AT510506A1 FLOOR CONSTRUCTION FOR A PLASTIC BOTTLE

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法律状态

优先权

专利摘要:
In a bottom structure for a plastic bottle (1) for pressurized beverages comprising an annular edge portion (6) integrally formed with the side wall (2) of the bottle and one surrounded by and integral with the edge portion (6) Concave portion (7), wherein the concave portion (7) has star-shaped arranged, increasing its rigidity enhancing reinforcing elements, the reinforcing elements of outwardly curved portions (9) of the concave portion are formed. The concave portion (7) including the convex portions (9) is formed with a substantially uniform wall thickness.
公开号:AT510506A1
申请号:T1577/2010
申请日:2010-09-22
公开日:2012-04-15
发明作者:
申请人:Red Bull Gmbh；
IPC主号:

专利说明:

The invention relates to a bottom construction for a plastic bottle for pressurized drinks comprising an annular edge portion formed integrally with the side wall of the bottle and a concave portion surrounded by and integral with the rim portion, the concave portion has star-shaped arranged, increasing its rigidity reinforcing elements.
Furthermore, the invention relates to a plastic bottle for pressurized drinks with a bottom construction, the annular edge portion is formed integrally with the side wall of the bottle.
A floor construction of the type mentioned, for example, DE-OS 1801368 can be seen.
Plastic bottles are od only under certain design conditions for receiving and storage of pressurized drinks. Like. Suitable. One of the major difficulties associated with the use of plastic bottles for the stated purpose is that the center portion of the bottle bottom tends to bow outward beyond the edge of the bottom, so that the stability of such Bottles is impaired. In order to avoid sagging, it has become known to form the bottom of the bottle as so-called champagne or as Petaloidboden. In the case of champagne, the bottom of the bottle is curved inwards and can thus withstand a certain internal pressure without sagging. The champagne flute is especially common with glass bottles. For plastic bottles, suitability for pressurized beverages depends on the wall thickness of the floor. If the wall thickness is too thin, the construction is too flexible and an excessive Verwölben the bottle bottom can not be prevented. On the other hand, if the wall thickness is too thick, the material consumption is great and the manufacturing costs and the weight of the bottle too high. Champagne soils of the conventional type are therefore from a certain CO 2 concentration of the beverage from an economic point of view can not be used. In the petaloid floor, the ground has constrictions extending up to the side walls, between which are formed domed, petal-like shaped fields. Petaloid floor are particularly widespread in plastic bottles and withstand a high pressure even at a relatively low wall thickness of the soil. However, the disadvantage is the lower stability and in particular the lower static tilt angle, so that the risk of falling over of the bottle is greater than in a comparable bottle with champagne. In addition, the appearance of the bottle is affected by the petaloid fields extending up to the side wall.
Various attempts have been made to improve the strength and rigidity of champagne flakes for use with plastic bottles. DE-OS 1801368, for example, realized in the concave bottle bottom; Star-shaped arranged stiffening ribs to take, but which have an extremely high material consumption result, since the stiffening ribs are made of material applied in addition to the soil material, so that the weight of the bottle is increased. In addition, the production of such a bottle bottom is much more complex than the production of a simple champagne flute. - 3 - «* * * *
The present invention therefore aims to further develop a bottom construction for a KunstStoffflasche so that the bottle with low weight and low material consumption is also suitable for receiving high-pressure drinks. The production should be simple, inexpensive and automated with short cycle times possible. Furthermore, the bottle should have a pleasing and high-quality appearance and in particular the floor construction should bring no restrictions on the design of the bottle shape with it.
To achieve this object, the invention essentially provides, in a floor construction of the type initially mentioned, that the reinforcing elements are formed by outwardly curved regions of the concave section and the concave section including the outwardly curved regions is formed with a substantially uniform wall thickness. The floor construction is thus based on the shape of a champagne flute, with the invention proposing elements for stiffening the concave bottom section in such a way that the material consumption is not or only slightly increased compared to a simple champagne flute. The stiffening elements provided according to the invention do not lead to thickening of the material at any point since they are formed only by outwardly curved regions of the concave bottom section. It has surprisingly been found that such stiffening areas lead even at very low wall thickness of the soil to a very rigid construction in which even very high internal pressures of the bottle can not cause buckling of the soil. • * · · V · «·« »·« «« «· - 4 -
Due to the floor construction, the plastic tab can be easily produced by conventional and proven methods. Particularly in the case of bottles made of polyethylene terephthalate (PET), the production preferably takes place from a so-called PET preform, an injection-molded preform. The way from a PET preform to the PET bottle goes through the following steps: The preform is first heated, ie a temperature profile corresponding to the desired wall thickness distribution is introduced into the preform. For example, infrared heat radiators can be used for this purpose. Thereafter, the preform is clamped in a mostly three-part mold and a mandrel moves into the preform and stretches it to the final length of the bottle. Compressed air blows the resulting tube into the final shape, after which the temperature of the bottle is brought below the glass transition temperature by cooling the tool. Finally, the mold opens and the finished bottle is ejected.
To realize the floor construction according to the invention, only the molding tool in the area of the floor has to be adapted accordingly, but the basic procedure remains the same and, in particular, no additional method steps are required. In the described manufacturing method, the concave portion including the convex portions can be easily formed with a substantially uniform wall thickness. " Essentially " This means that slight differences in the wall thickness can occur due to the production, for example because the material is stretched more strongly in the outwardly curved areas when the preform is pressed against the mold than in the case of the mold.
* * * «« «· * * V · - 5 - bare areas, so that the floor in these areas may be slightly thinner.
According to a preferred embodiment of the invention, the outwardly curved areas are spaced apart in the circumferential direction. The outwardly curved areas are evenly distributed in particular in the circumferential direction, wherein, for example, six areas are provided. Conceivable, depending on the diameter of the bottle but also 3,4,5,7,8,9,10,11 or 12 areas.
The outwardly curved portions are preferably elongated, i. that their extent in the radial direction is greater than in the circumferential direction. This leads to a particularly stable floor construction.
In addition to the reinforcement of the concave bottom portion, the outwardly curved areas can also serve as footprint of the bottle. For this purpose, the embodiment is preferably such that the outwardly curved regions comprise a section parallel to a footprint or forming a footprint. The parallel to the footprint section may, for example, a projecting to the footprint protrusion or the like ..
Alternatively, or in addition to the footprint, which are formed by the mentioned portions of the outwardly curved stiffening regions, but the bottle can also be in the conventional manner at the edge of the soil. The formation is then made such that the annular edge portion of the floor construction has a footprint of the floor construction. This results in a contact with the bottom of the bottle bottom, as in the case of a conventional bottle with Q & bottom along the bottom edge. As a result, aesthetic requirements can be taken into account and, as in the case of a champagne bottle, a high-quality bottle design can be realized in which the sidewalls of the bottle run freely to the floor without stiffening elements or the like being visible.
Good stiffening properties result if, as corresponds to a preferred development, the outwardly curved regions laterally and radially inwardly on the parallel to the footprint formed or forming a footprint forming portion subsequent curved sections.
A further improvement in the stability of the floor construction preferably results from the fact that the outwardly curved areas surround an inwardly curved central area.
A further improvement in the stability of the floor construction is furthermore preferably achieved by the floor construction having an annular recess between the outwardly curved areas and the edge section.
A further improvement in the stability of the floor construction preferably results from the fact that the floor construction has an annular recess between the outwardly curved areas and the inwardly curved central area.
The outwardly curved regions preferably have a radial extension which essentially corresponds to the radial spacing between the edge section and the central Eereich, whereby a maximum stiffening is achieved.
As already mentioned, the floor construction according to the invention should be suitable for high internal pressures, wherein the internal pressure depends primarily on the CO 2 content of the beverage. An advantageous development therefore provides that the bottom construction is designed to withstand an internal pressure of the bottle at a CC> 2 concentration of up to 5 g / l at a temperature of 20 ° C.
In order to achieve a cost-effective, a low material consumption causing and lightweight construction, care must be taken to a correspondingly small wall thickness, but at the same time the wall thickness can not be arbitrarily reduced for stability reasons. Preferred in this connection is an embodiment in which the annular edge section and the concave section at no point exceed a wall thickness of 1.95 mm, preferably 1.5 mm, preferably 1 mm.
The invention will be explained in more detail with reference to an embodiment schematically illustrated in the drawing. 1 shows a plastic bottle from the side, FIG. 2 shows a bottom view of the bottle and FIG. 3 shows a sectional view along the line III-III of FIG. 2.
In Fig.l plastic bottle, in particular PET bottle 1 is shown, which has a side wall 2 and an integrally formed with the side wall 2 bottom 3. The bottleneck 4 has an external thread, not shown, onto which the screw cap 5 is screwed. - 8th -
Ir Fig.2 is a bottom view of the bottom 3 is shown. The bottom 3 has an annular edge portion 6, with which the bottle can stand on a substrate. Between the edge portion 6 and the concave portion 7, an annular recess 8 is provided. The concave portion 7 has outwardly curved, that is convex portions 9, each one adjacent to a footprint portion 10, laterally adjoining the parallel to the footprint formed portion 10 adjacent curved portions 11 and radially inwardly of the parallel to the footprint formed portion 10 subsequent have curved portions 12. Between the outwardly curved regions 9 and the central, inwardly curved region 13, an annular recess 14 is likewise arranged.
In the cross-sectional illustration according to FIG. 3, the curvatures of the individual arched regions 9 can be seen better, and it can further be seen that the wall thickness or the material thickness of the bottom 3 is substantially the same everywhere.

权利要求:
Claims (16)
[1]
1. A floor structure for a plastic bottle for pressurized drinks comprising an annular edge portion (6) integrally formed with the side wall (2) of the bottle and one surrounded by the edge portion (6) and with this one-piece concave portion (7), said concave portion (7) having a star-shaped reinforcing member increasing its rigidity, characterized in that said reinforcing members are formed by convex portions (9) of said concave portion (7) are and the concave portion (7) including the outwardly curved portions (9) is formed with a substantially uniform wall thickness.
[2]
2. Floor structure according to claim 1, characterized in that the outwardly curved regions (9) are spaced apart in the circumferential direction.
[3]
3. Floor structure according to claim 1 or 2, characterized in that the outwardly curved regions (9) comprise a parallel to a footprint or a footprint forming portion (10).
[4]
4. Floor construction according to claim 1, 2 or 3, characterized in that the annular edge portion (6) has a footprint of the floor construction.
[5]
5. Floor structure according to claim 3 or 4, characterized in that the outwardly curved regions (9) laterally and radially inwardly on the plane formed parallel to the footprint or a footprint forming t ·. - 10 - Section (10) subsequent curved sections (11,12) include.
[6]
6. Floor structure according to one of claims 1 to 5, characterized in that the outwardly curved regions (9) surround a curved inwardly central region (13).
[7]
7. Floor structure according to one of claims 1 to 6, characterized in that the bottom construction between the outwardly curved portions and the edge portion (6) has an annular recess (8).
[8]
8. Floor structure according to claim 6 or 7, characterized in that the bottom construction between the outwardly curved regions (9) and the inwardly curved central region (13) has an annular recess (14).
[9]
9. Floor structure according to claim 6, 7 or 8, characterized in that the outwardly curved regions (9) have a radial extent, which corresponds substantially to the radial distance between the edge portion (6) and the central region (13).
[10]
10. Floor construction according to one of claims 1 to 9, characterized in that the outwardly curved portions (9) are elongated, wherein their extent in the radial direction is greater than their extension in the circumferential direction.
[11]
11. Floor structure according to one of claims 1 to 10, characterized in that the annular edge portion (6) and the concave portion (7) at any point exceeds a wall thickness of 1.95 mm, preferably 1.5mm, preferably 1mm.
[12]
12. Floor construction according to one of claims 1 to 11, characterized in that the floor construction is designed to withstand an internal pressure of the bottle at a CO2 concentration of up to 5g / l at a temperature of 20 ° C.
[13]
13. Floor structure according to one of claims 1 to 12, characterized in that the edge portion (6) and the concave portion (7) consists of polyethylene terephthalate (PET).
[14]
14. Plastic bottle for pressurized drinks with a bottom construction according to one of claims 1 to 13, the annular edge portion (6) is formed integrally with the side wall (2) of the bottle.
[15]
15. Plastic bottle according to claim 14, characterized in that the plastic bottle together with the bottom construction consists of polyethylene terephthalate (PET).
[16]
16. Plastic bottle according to claim 14 or 15, characterized in that the plastic bottle is made of an injection-molded preform by inflation against a mold. Vienna, 22 September 2010 Applicant to: / Patent Haffner / and Keschmann Patentanwälte CG

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法律状态:
2019-05-15| MM01| Lapse because of not paying annual fees|Effective date: 20180922 |

优先权:

申请号 | 申请日 | 专利标题

ATA1577/2010A|AT510506B1|2010-09-22|2010-09-22|FLOOR CONSTRUCTION FOR A PLASTIC BOTTLE|ATA1577/2010A| AT510506B1|2010-09-22|2010-09-22|FLOOR CONSTRUCTION FOR A PLASTIC BOTTLE|

PCT/EP2011/004717| WO2012038075A1|2010-09-22|2011-09-21|Bottom structure for a plastic bottle|

BR112013006898A| BR112013006898A2|2010-09-22|2011-09-21|base for a plastic bottle and plastic bottle|

EP11758410.2A| EP2619097B1|2010-09-22|2011-09-21|Bottom structure for a plastic bottle|

JP2013529574A| JP5921553B2|2010-09-22|2011-09-21|Bottom structure of plastic bottle|

CN201180051059.8A| CN103180212B|2010-09-22|2011-09-21|Bottom for plastic bottle|

US13/825,545| US9580206B2|2010-09-22|2011-09-21|Bottom structure for a plastic bottle|

AU2011304660A| AU2011304660B2|2010-09-22|2011-09-21|A base for a plastic bottle and bottle|

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