CZ2006528A3 - Plastic-made foldable bottle - Google Patents

Abstract

The bottle with folding ribs (1) is based on the helix line principle. The shape of the folding ribs (1) is defined by at least one helix-shaped intercostal groove (2) or dashed helix. In the case of a plurality of grooves (2 ', 2' '), these preferably extend as a multistage helix or as a symmetrically opposed helix. Preferably, two to eight shape folds (3) are provided, extending downwardly from above, or vertically, through the ribs (1) on the collapsible portion of the bottle, and in addition to or instead of the upper or lower opposing surface (1 ', 1' '). ) of the ribs (1) provided with reinforcing grooves (5) in the form of holes or projections.

Description

The bottle with the folding ribs (1) is formed on the principle of a helix line. The shape of the folding ribs (1) is defined by at least one intercostal groove (2) in the form of a helical or intermittent helical. In the case of a plurality of grooves (2 ', 2), these preferably extend as a multi-helix or a symmetrically opposing helix. Preferably, there are two to eight shaped folds (3) extending obliquely from top to bottom or vertically over the ribs (1) on the folding portion of the bottle, and in addition to or instead of them there is an upper or lower opposite surface (11) of the ribs (1). ) provided with reinforcing indentations (5) in the form of holes or protrusions.

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Plastic collapsible bottle

Technical field

The invention relates to a plastic collapsible bottle on which ribs are formed by means of which the bottle is collapsible in a vertical direction. The technical solution is designed especially for PET beverage bottles.

BACKGROUND OF THE INVENTION

Plastic bottles, especially PET beverage bottles, are problematic wastes. Problems are both storage after use and disposal, as well as the possibility of sorting waste and possible secondary treatment. If these bottles are stored and put into waste without compression after use, their large volume causes storage problems, reduces the waste disposal economy and the economic efficiency of any disposal or secondary treatment.

From the patent documentation, collapsible plastic bottles based on PET or the like are already known which can be reduced in volume or minimized by compression in the vertical direction after the content has been consumed.

This is achieved by the construction of the side walls of the bottle, which in the case of collapsible bottles are shaped as accordion-like ribs. The accordion arrangement is achieved by convex ribs separated by grooves. In existing collapsible bottles, the grooves between the ribs are oriented horizontally. On the bottle, therefore, the folding part is formed as a system of alternating individual horizontal ribs and grooves. The number of ribs and the number of grooves can therefore be easily calculated on each collapsible bottle because they are arranged one above the other.

For example, in CZ PV 2001-2668 according to WO 00/44630, an irreversible bottle is described with a progressively collapsible structure of its side walls, without the possibility of returning to its original shape, wherein the side walls have an accordion structure comprising a plurality of adjacent pleats. Of these, each fold is formed by two opposing faces of different width and at least a smaller face of both has an arcuate shape. If this shape were considered not related to the folds but to the nature of the ribs thus formed, said condition of varying surface width means that one

Half of each rib has a higher height, resp. convexity than the other. This implies the possibility of the bottle being collapsible under light pressure. In practice, however, such a bottle easily undergoes spontaneous deformation, in particular the deformation of the bottle shape in the width direction due to the weight of the beverage, handling and storage, and also this bottle is absolutely not suitable for carbonated beverages since it does not withstand internal pressure on its walls.

Another collapsible bottle has been described, for example, in EP 0 850 842 A1. Disclosed is a collapsible bottle composed of accordion ribs whose upper walls or lower walls have at least one peripheral groove. These bottles are provided with reinforcements by means of a groove which increases their resistance to undesirable deformation and facilitates the deliberate folding of the bottle. Even in this case, however, the entire peripheral indentation here for the formation of the groove violates the dimensional symmetry between the upper and lower half of the accordion ribs of the bottle, resulting in undesirable spontaneous deformation of the bottles and the impossibility of filling them with carbonated beverages.

Both publications cited as prior art disclose the possibility of creating an accordion bottle with symmetrical ribs, where the upper half of the ribs have the shape and dimensions of the lower one, but this solution also causes problems in practice due to deformations, especially when bv was used for so-called carbonated drinks.

In WO 2005/061336, in order to reduce the risk of undesirable deformations and to improve the desired folding direction, the possibility of resolving by means of specific ribs of the ribs and by various indentations in the ribs forming protrusions or wells is described. For greater resistance to filling pressure, particularly for use in gas-carbonated beverages, there is provided the possibility of providing the bottle, in addition to the accordion horizontal ribs, with vertical indentations which are guided from the bottle from top to bottom through the entire folding portion thereof.

The depth of the groove's location, or the ratio between the rib height and the groove depth, is not considered by these publications, but it is clear that the size of the rib affects the bottle's complexity. In practice, on the market, there are also various grooves and ribs on the plastic bottles, which here only serve as ornamental functions, or are only here to roughen the surface of the bottle and prevent unwanted slipping out of the hand when gripping the bottle. These grooves are shallow and do not allow the bottle to be collapsible.

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It is characteristic of the prior art that all the aforementioned documents consider only the accordion arrangement of the collapsible part of the bottle body to be the only possible folding system, that is, a system of alternating individual ribs and horizontal grooves arranged one above the other. This view is largely restrictive, since in addition to the technical aspect, the appearance of bottles also plays a major role. The creation of collapsible bottles only in the form of a accordion could lead to some undesirable stereotype on the market. However, today's manufacturers are increasingly looking for shape originality. In addition, the purely accordion arrangement of the collapsible portion of the bottle has not yet been found to be widespread in practice, and it has not yet been verified whether these bottles will not deform as a result of alternating horizontal divisions due to the tilting that occurs during handling.

SUMMARY OF THE INVENTION

The above disadvantages are largely overcome by the invention. Its essence is that the collapsible part of the rod is designed as a helical system. The new plastic collapsible bottle of the invention is easily, but irreversibly, collapsible by compression in a vertical direction. The collapsible bottle according to the invention comprises at least one collapsible portion located anywhere between the neck and the bottom of the bottle and consisting of a sculpted bottle wall, where the frontal view of the bottle shows the superimposed convex folding ribs separated by intercostal grooves. In a front view, the ribs and the intercostal grooves alternate, the ribs being formed by two opposing surfaces. It is an essential and main idea of the invention that at least one intercostal groove in the form of at least a helical section is provided as a dividing groove between the folding ribs. In this way, the ribs, respectively, can be achieved. the rib is in the helix line, although it can then be split and resolved as detailed below. The novel collapsible bottle solution according to the invention does not limit the size of the bottle or the overall shape of the bottle itself, which can be classic or conical, flattened, locally extended or narrowed, etc. The novel collapsible bottle solution according to the invention intentionally does not limit the helix angle. whether the climb is regular or irregular, as these • ·

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The possibilities within the feasibility can be freely chosen by the user, especially according to the aesthetic intention.

The size of the rib, however, has a major influence on the bottle's complexity, so attention must be paid to it. Preferably, the depth of the folding ribs, considered as the distance of the intercostal groove to the line of the outer periphery of the rib, in the folding section is equal to 0.3 to 1.5 times their height. The rib height (s) thus considered is readily measurable as the distance of two points of the helix of the groove located one above the other. The measurement can be made easily by drawing or imagining a vertical line on the surface of the bottle and measuring the distance at which the intercostal grooves intersect. Preferably, only one intercostal groove is formed on the bottle, but within the folding portion under consideration. This is in the form of a helix or intermittent helix whose arrangement will be explained in more detail below. In this case, essentially only one rib is formed on the bottle, which is optionally still divided into sections as will be explained in more detail below, and which winds the bottle in the helical direction. When viewed from the front, however, the bottle will appear as if its side wall has been formed into a system of individual, obliquely directed ribs alternating with the intercostal grooves, and only when the bottle is grasped and inspected, or viewed from a spatial perspective, one rib.

Alternatively, the folding portion may comprise two or more intercostal grooves in the form of a helical or intermittent helix, wherein the intercostal grooves together form a multi-helix or intermittent multi-helix. The entire folding part of the bottle then has a total of two spiral ribs in the case of two intercostal grooves. If there are more than two ribs, it has as many ribs as there are ribs. When viewed from the front, however, the bottle will appear as if its side wall has been formed into a system of individual, obliquely directed ribs alternating with the intercostal grooves, and will differ from the previous variant only by a greater pitch of the ridges and ribs.

Another possible embodiment of the invention is that the folding part comprises two or more helical or interrupted helical grooves and these intercostal grooves intersect with each other. They are preferably situated opposite to each other so that they run symmetrically against each other. Thus, a very interesting bottle shaping is achieved, whereby a dynamic shape with an increased number of ribs having varying heights is produced. In order to produce or determine the aforementioned optimum depth of these ribs, we measure the ribs at their highest height.

Preferably, the folding portion is provided with a set of reinforcing shaped folds which are two to eight on the folding portion of the bottle, each of which forms a rib recess on the folding portion of the bottle, each of which shaped folding guides the folding portion in a line from top to bottom over all the ribs of the folding portion in the line. It is to be understood that each shape deflection extends vertically or at an angle from top to bottom through the folding portion of the bottle. The shaped folds may be relatively shallow, but may be so deep as to cause the intercostal grooves to be interrupted as mentioned above. The formation of shaped folds on the collapsible bottle is particularly useful for bottles filled with carbonated beverages and larger bottles, or for bottles filled with a high-weight liquid, since these folds are able to prevent unwanted deformations of the full bottle very effectively.

Preferably, the shaped folds extend vertically on the folding portion of the bottle. The advantage is the use of a direction consistent with the action of gravity, and this solution also aesthetically works well.

Advantageously, the depth of the form folds reaches the level of the inter-groove grooves. This is the case mentioned above, since the shape deflection extends to the level of the intercostal grooves, the grooves are interrupted and the spiral ribs are also interrupted.

Instead of, or in addition to, the shaped folds, one of the opposing rib surfaces, the top and / or bottom of all the ribs of one folding portion, may be provided with a set of reinforcing embossments which form a set of holes and / or protrusions on the ribs.

Preferably, one of the opposing surfaces of all the ribs, the top or bottom of all the ribs of one folding portion, is slightly wavy. This achieves an even folding of the bottle under pressure.

The invention is applicable to plastic bottles, in particular beverage PET bottles. It can significantly expand the market and at the same time meet environmental objectives. In addition to achieving the desired technical effect, the bottle's complexity, it is also an aesthetically pleasing solution. The appearance of the helix adds dynamism to the appearance of the bottle and can be applied to different bottle types and sizes, which is a big advantage in today's market and the demands of today's customers. The technical design of the collapsible bottle according to the invention provides the user with the possibility of safely and easily folding the bottle to a minimum volume after use, while allowing both the user and the manufacturer to be safe in shape stability in the filled state. The invention makes it possible to fill collapsible bottles with conventional liquids, but also with carbonated beverages, without causing undesirable distortion of the bottle structure. The collapsible bottle according to the invention can, in the case of greater expansion, considerably facilitate the sorting and handling of waste and increase the economic efficiency of the secondary treatment. By allowing the folding bottles to reduce the volume of waste, the consumer will be more comfortable and the efficiency of waste disposal will be improved and the possibilities of possible collection and secondary processing of plastics will be supported. Improvement of the environment can also be achieved by the fact that the limited capacity of waste bins and boxes at exposed locations such as kiosks, fairgrounds, railway stations, etc. can be better used with collapsible bottles and consumers will be less polluted by discarding used bottles . Subsequently, environmental benefits can be expected due to higher efficiency of waste disposal and secondary treatment, which could reduce the occurrence of these materials in landfills.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a single foldable bottle according to the invention with one intercostal helical groove; FIG. 2 is a front view of a foldable bottle with two intercostal grooves situated as a double-helix; FIG. Fig. 4 front view of a folding bottle with one intercostal groove and three vertical folds at the depth of the grooves, Fig. 5 front view of a folding bottle with one intercostal groove and three oblique lines Fig. 6 front view of a folding bottle with one intercostal groove, three vertical shape folds and a set of reinforcing embossments on the lower half of the ribs, Fig. 7 top view of a folding bottle with one intercostal groove in the shape of a helix, Fig. 8 top view on a collapsible bottle with two mezebrows Fig. 9 a top view of a collapsible bottle with two intercostal grooves situated as oppositely running helices, Fig. 10 a top view of a collapsible bottle with one intercostal groove and three vertical shape folds.

DETAILED DESCRIPTION OF THE INVENTION

Example 1

An illustrative embodiment of the invention is a collapsible PET beverage bottle provided with one intercostal groove in the form of a helix according to Figs. 1 and 7.

This plastic collapsible bottle is collapsible in a vertical direction. It represents a simple embodiment of the invention and illustrates its nature. The folding portion of the bottle begins just below the neck and ends up to the bottom of the bottle, so that the folding portion is essentially the entire body of the bottle. The folding part is formed by shaped side walls of the bottle. On the front view of the bottle, on the body of the bottle, in the region of the folding part, there are superimposed ribs 1, separated by intercostal grooves 2. The frontal view gives the apparent impression of the accordion system because alternating ribs 1 and intercostal grooves 2. However, unlike the existing collapsible accordion bottles, these are both at an angle. Each rib 1 is formed by two opposing faces 1M. upper and lower. The inclination of the ribs 1 and the grooves 2, alternating from the front view, results from the fact that in the entire folding part of the bottle there is in fact only one intercostal groove 2, which is helically shaped. It is closely related to the essence of the invention according to the invention that if it is a mere harmonica known from the prior art, the application of the bevel is out of the question. In the case of an accordion arrangement, the inclination of a conventional accordion wall could, in the filled state, cause a one-sided pressure load on the bottle, causing undesirable deformation or tilting of the bottle to one side. The groove 2 formed as a helix between the ribs 1, however, has the effect that the shape of the bottle is relatively stable.

The depth h of the folding ribs 1, considered as the distance between the ribs of the groove 2 and the outer circumferential line of the rib 1, is visible for all ribs 1 seen from the front in the folding section, within an optimum range of 0.3 to 1.5 times their height The upper opposing surfaces V of all the ribs 7, taken into account at

The front views of the bottle standing on the support are slightly arcuate, while the lower opposing surfaces 1 of all the ribs 1 of the folding portion are undulating.

Example 2

Another embodiment of the invention is a collapsible plastic beverage bottle with two intercostal grooves 2 ', 2 formed as a double-helix, according to Figs. 2 and 8.

This plastic collapsible bottle is also collapsible in a vertical direction. For the sake of simplicity and understanding of the nature of the invention without limiting the variability of embodiments, a bottle is chosen where the folding portion also starts just below the neck and ends up to the bottom of the bottle so that the folding is essentially the entire body of the bottle. The folding part thus forms the shaped side walls of the bottle. When viewed from the front, the convex ribs 1, separated by intercostal grooves 2, 2, are also visible on the body of the bottle. In front view, the apparent appearance of the accordion system is evoked, as the ribs I and the intercostal grooves 2 ', 2 alternate, which, however, unlike the existing collapsible accordion bottles, are both inclined. Each rib 1 is formed by two opposing faces 1 ', Γ'. upper and lower. The inclination of the ribs 1 and the grooves 2 ', 2 alternating from the front view is slightly greater than in the previous example, as a result of the fact that the folding part of the bottle is in fact provided with two intercostal grooves 2', 2, both helically . The grooves 2 ', 2 are situated as a double helix, which means that they run in the same way, at a corresponding pitch and at the same distance to each other.

The depth h of the folding ribs 1, considered as the distance of the intercostal groove 2 ', 2 relative to the line of the outer periphery of the rib 1, is within the optimum range of 0.3 to 1.5 times their height v. The upper opposing faces Γ of all the ribs 1, taken into consideration when viewed from the front of the bottle standing on the support, are slightly arcuate, while the lower opposing faces 1 of all the ribs 1 of the folding portion are undulating.

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Example 3

Another embodiment of the invention is a collapsible plastic beverage bottle with two helical grooves 22 extending symmetrically against each other, according to Figs. 3 and 9.

The plastic bottle is collapsible in the vertical direction. The folding part of the bottle starts just below the neck and ends at the bottom of the bottle, so the folding part is almost the entire body of the bottle. The folding portion is formed by shaped side walls of the bottle. From the front view of the bottle, the ribs 1 situated above one another are also visible on the body of the bottle, separated by intercostal grooves 2, 2. Visible ribs 1, seen from the front, alternate with intercostal grooves 2'2. Each rib 1 is formed by two opposing faces 1M ”. upper and lower. The ribs 1 and the grooves 22 are alternating in front view. The ribs 1 have a remarkable shape of varying height and are intriguingly nested with each other, as a result of the fact that the folding part of the bottle is in fact provided with only a total of two intercostal grooves 2 ', 2, both helical. These grooves 22 are situated as helices of the same shape, facing each other, causing them to intersect. The multiplication of the grooves 2, 2 and their heterogeneity will cause both a certain stiffening of the bottle body as well as a multiplication of the ribs 1 and the formation of interesting patterns therefrom, while achieving the effect of the bottle's complexity after use.

The depth h of the folding ribs 1, considered as the distance of the intercostal groove 2, 2 to the line of the outer periphery of the rib 1, is visible for all ribs 1 in the folding section in frontal view of the bottle, within an optimum range of 0.3 to 1.5 times their height y. The upper opposing faces Γ of all the ribs, considered when viewed from the front of the bottle standing on the support, are slightly arcuate, while the lower opposing faces 1 of all the ribs and the folding portions are undulating.

Example 4

Another embodiment of the invention is a collapsible plastic beverage bottle with one interrupted intercostal groove 2 according to Figures 4 and 10.

The bottle is collapsible when pushed vertically. The folding portion begins below the neck and ends near the bottom of the bottle. The folding part of the bottle is formed by its shaped side • 9 • Φ Φ · · Φ Φ

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Stěny ·· ·· walls. In the front view, the folding parts of the bottle also show the convex ribs 1 separated by intercostal grooves 2. In frontal view, the slanted ribs 1 and the intercostal grooves 2 alternate one above the other. Each rib 1 is formed by two opposing surfaces 11 '. upper and lower. The bottle has a spiral-shaped groove 2, which is interrupted at the points where the reinforcing form folds 3 are present. These are three in the exemplary bottle, which is in the optimum range of two to eight. Each shape deflection 3 forms recesses 4 on all the ribs 1 on the folding portion of the bottle. Each shape deflection extends over the entire folding portion of the bottle, in a single line, in this case a line parallel to the axis of the bottle. The example illustrates the form folds 3 which extend on the folding part of the bottle in the vertical direction. The interruption of the intercostal groove 2 at each location is due to the depth of these shaped folds 3 reaching the level of the intercostal groove 2. The shaped folds 3 also break the continuity of the rib 7 so that this bottle, unlike the first two described in the present invention, contains a system of ribs 1 and not just one.

The depth h of the folding ribs 1, considered as the distance of the intercostal groove 2 to the line of the outer periphery of the rib 1, is visible for all ribs 1 in the folding section not only in front view, within an optimum range of 0.3 to 1.5 times their height v. The upper opposing faces Γ of all the ribs 1, taken into account when viewed from the bottle standing on the support, are slightly arcuate, while the lower opposing faces 1 of all the ribs 1 of the folding portion are undulating.

Example 5

Another embodiment of the invention is a collapsible plastic beverage bottle with one intercostal groove 2 and oblique shaped folds 3 according to Fig. 5.

The bottle is collapsible when pushed vertically. The folding portion is one, starting below the throat and ending in the lower region of the bottle. The folding portion of the bottle is formed by shaping its side wall. When viewed from the front, folded ribs 1, separated by intercostal grooves 2, are visible on the folding part. Separate ribs 2 and intercostal grooves 2 alternate one above the other. In fact, there is only one groove 2 that runs on the bottle • helical. Each rib 1 is formed by two opposing faces 11 '. upper and lower. The spiral groove 2 is not interrupted even at the places where the reinforcing shaped folds 3 are present. These are also in the number of three in the illustrated bottle, in the optimum number of two to eight. Each shape deflection 3 forms on the folding part of the bottle a recess 4, visible on all the ribs 1. That is to say, each extends over the entire folding part of the bottle, in a single line, in this case a line of inclined line. The example illustrates the shaped folds 3 that extend on the folding portion of the bottle in a direction other than vertical. The fact that the shaped folds 3 do not always interrupt the grooves of the groove 2 at the point of their occurrence is due to the fact that the depth of these shaped folds 3 does not reach the level of the grooves 2 of the grooves. of the two described in the present invention could be considered to comprise a true set of ribs 1 and not just one. On the other hand, the distribution is incomplete and is still visibly dominated by the integrity of the helix of the single groove 2. This rib system 1 can therefore also be considered as a single helical rib, shaped in shape.

The depth h of the folding ribs 1, considered as the distance between the ribs of the groove 2 and the line of the outer periphery of the rib 1, is visible for all ribs 1 in the folding section not only in front view, within an optimum range of 0.3 to 1.5 times their height v. The upper opposing faces V of all the ribs 1, taken into consideration when viewed from the bottle standing on the support, are slightly arcuate, while the lower opposing faces 1 of all the ribs 1 of the folding portion are undulating.

Example 6

Another embodiment of the invention is a collapsible plastic beverage bottle with one intercostal groove 2, shaped folds 3 and reinforcing recesses 5 according to Figures 6 and 10.

The bottle is collapsible when pushed vertically. The folding part is one, starting below the throat and ending at the bottom of the bottle. The folding portion of the bottle is formed by shaping its side wall and bottom. When viewed from the front, the folded ribs 1 are superimposed on top of each other, separated by intercostal grooves 2. In frontal view, the slanted ribs 1 and intercostal grooves 2 alternate one above the other, in • • ·

in fact, there is only one groove 2 that runs on the bottle in the form of a helix. Each rib 1 is formed by two opposing faces 1 ', 1, an upper and a lower one. The spiral groove 2 is not interrupted even at the places where the reinforcing shaped folds 3 are present. These are also in the number of three in the illustrated bottle, in the optimum number of two to eight. Each shaped deflection 3 forms on the folding part of the bottle a recess 4 visible on all the ribs 6. Each bend 3 extends over the entire folding portion of the bottle in a single line, in this case a vertical line. The shaped folds 3 do not cause interruption of the intercostal groove 2 at their location because their depth does not reach the level of the intercostal groove

2. The shaped folds 3, however, break the continuity of the rib 6, so that this bottle, unlike the first two described in the present invention, contains a true set of ribs 1 and not just one.

The depth h of the folding ribs 5, considered as the distance of the intercostal groove 2 to the line of the outer periphery of the rib 6, is visible for all the ribs 6 in the folding section not only in front view, within an optimum range of 0.3 to 1.5 times their height v. The upper opposing faces Γ of all the ribs 4, taken into account when viewed from the bottle standing on the support, are slightly arcuate, while the lower opposing faces 1 of all the ribs 4 of the folding portion are undulating.

One of the opposing surfaces 1 of all the ribs 6, in this case the lower opposite surface 1 of all the ribs 6, is provided with a set of reinforcing embossments 5, which in this case are the same for all the ribs 6 and form holes on them. In practice, however, the invention envisages that reinforcing embossments 5 of different shapes may be present on the various ribs or may be present only on some of the ribs and not on others. There may be one, none, or several reinforcing embossments 5 on one rib 6.

The examples set forth herein are intended to illustrate and elucidate the nature of the invention and are not intended to limit the scope of the invention in any way. The individual conceptual features mentioned herein can therefore be combined in different ways.

The bottle shown in this example is an illustration of the optimal solution according to the invention and is also suitable for carbonated beverages.

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PATENT CLAIMS

Claims (9)

2 oo 6 - ty γ A plastic collapsible bottle which is collapsible in a vertical direction and comprises at least one collapsible portion located anywhere between the neck and the bottom of the bottle and consisting of a shaped bottle wall, the frontal view showing the superimposed ribs (1), separated intercostal grooves (2), and wherein, in front view, the ribs (1) and the intercostal grooves (2) alternate, the ribs (1) being formed by two opposing surfaces (1 ', 1), characterized in that at least one intercostal groove (2) in the form of at least a helix section. Plastic collapsible bottle according to claim 1, characterized in that the depth (s) of the folding ribs, taken as the distance between the ribs of the groove (2) and the outer circumferential line of the rib (1), is equal to 0.3 to 1.5 times their height (in). Plastic collapsible bottle according to claims 1 and 2, characterized in that within the collapsible part a single groove (2) is formed on the bottle in the form of a helical or interrupted helical. Plastic collapsible bottle according to claims 1 and 2, characterized in that the folding part comprises at least two intercostal grooves (2 ', 2) in the form of a helical or intermittent helix, which intercostal grooves (2', 2 ") together form a multi-pass helical or intermittent multi-pass helix. Plastic collapsible bottle according to claims 1 and 2, characterized in that the folding part comprises at least two intercostal grooves (2 ', 2) in the form of a helical or intermittent helix, which intercostal grooves (2', 2) intersect with each other. and preferably run symmetrically against each other. Plastic collapsible bottle according to any one of claims 1 to 5, characterized in that the collapsible part is provided with a set of reinforcing shaped folds (3), in the number of two to eight, each of which forms a recess on the collapsible part of the bottle. 4) ribs (1), wherein each shaped deflection (3) extends in one line through the folding portion, over all the ribs (1) of the folding portion. Plastic collapsible bottle according to claim 6, characterized in that the shaped folds (3) run on the collapsible part of the bottle in a vertical direction. Plastic folding bottle according to one of claims 6 and 7, characterized in that the depth of the shaped folds (3) reaches the level of the intercostal grooves (2). Plastic collapsible bottle according to one of Claims 1 to 8, characterized in that the ribs (1) are provided with reinforcing strips on one of the opposing surfaces (1 ', 1) for all the ribs (1) within one folding portion. indentations (5) in the form of wells and / or protrusions that form a plurality of individual wells and / or protrusions on the collapsible portion of the bottle. A plastic collapsible bottle according to any one of claims 1 to 9, characterized in that one of the opposing surfaces (1 ', 1) of all the ribs (1), the same for all the ribs within one folding part, is corrugated. ························· OUT · · · · · · ··· 9999 ·· « 9 9 9 9 9 «» · · I ·· ·· /// G- Ο'-r FIG.1 ΐ '• · • · I * · « Β · ·· Β · · «