ES2761696T3 - Glass bottle for use with mechanical stopper - Google Patents

Abstract

Glass bottle with bottle neck (11, 91) with blind holes (19, 19 ', 92, 92') on the outside of the bottle neck for a mechanical stopper, the blind holes (19, 19 ', 92, 92 ') in the sense that they are configured asymmetrically at least in the longitudinal direction of the bottle neck, characterized in that - each blind hole (19, 19', 92, 92 ') is configured as a curved surface including concave and convex shaped areas, - the blind hole contour line (61, 61, 61 ', 101, 101'), which lies in a plane normal to the direction of the longitudinal axis of the bottleneck, has extended sides or is tulip-shaped.

Description

DESCRIPTION

Glass bottle for use with mechanical stopper

Technical field of the invention

The invention comprises a glass bottle according to the preamble of claim 1.

Background of the Invention

Glass bottles used in the food industry can be equipped with mechanical stoppers, for example to close beverage bottles that are under pressure due to the carbon dioxide content of the beverage. The opening and closing of a mechanical plug can be done by hand as many times as necessary and does not require any auxiliary means. Conventional mechanical stopper glass bottles are made from sodium calcium glass, a bulk glass used for the manufacture of container glass and flat glass. Sodium-calcium glass has relatively good chemical properties and is suitable for products that normally have to withstand a brief chemical stress and are not exposed to high thermal loads.

DE 3433612 A1 discloses a procedure for the use of different bottle closures. To do this, mechanical stoppers are provided underneath the mouths, whose design allows the removal and a simple change by hand of the mechanical stoppers from one bottle to another. The supports for the mechanical stoppers used in this case consist of two opposite grooves, arranged perpendicularly, blown into the bottle, which are frontally round at the top and end flat at the bottom towards the neck of the bottle.

Borosilicate glass, for example, is a stronger glass material against a wide variety of influences. This is known as chemical, temperature and temperature change resistant glass and is often used as glass for packaging in the chemical industry and generally in industry.

Now it has become clear that manufacturing glass bottles with a mechanical stopper from another glass material is not easy. When borosilicate glass has been used as a starting material for glass bottles with a mechanical stopper, the circular holes drilled in the neck of the bottle that are intended to fix the mechanical stopper have caused cracks when the glass has cooled.

objective

Therefore, it is an objective of the present invention to find a solution to the problem of cracking. In particular, it is an object of the present invention to find an alternative glass bottle or alternative glass bottle neck for mechanical stoppers and to provide an alternative method for manufacturing a glass bottle or glass bottle neck for mechanical closures. In particular, it is an object of the present invention to provide a borosilicate glass glass bottle that is suitable for closure by means of a mechanical stopper.

Description of the Invention

During the manufacture of glass bottles cracks may occur around the blind holes, in particular during the usual pressing and blowing procedure. This problem occurs in particular in glass bottles that are made of glass that is not sodium-calcium, for example, borosilicate glass. If the blind holes of the glass bottles are formed as circular cylindrical depressions as usual in sodium-calcium glass bottles, depending on the composition of the glass, cracks appear in the bottleneck in areas around the blind holes. Surprisingly, it has been shown that cracks can be prevented, in particular in non-sodium-calcium glasses such as, for example, borosilicate glass, if the blind holes are configured asymmetrically, at least in the course of the neck longitudinal bottle and therefore have a general pattern of blind hole not homogeneous as a whole.

The term blind hole pattern includes in particular the contour of the hole with its sequence of concave and convex formed zones, the relationships of the concave and convex formed zones, as well as their symmetry configuration or the absence of symmetry configuration.

A glass bottle according to the invention, containing a bottleneck with blind holes on the outer side of the bottleneck for a mechanical stopper is characterized in that each blind hole is configured as a curved surface containing zones concave and convex formed, and the blind hole contour line, which is in a plane normal to the direction of the longitudinal axis of the bottleneck, has extended arms or is shaped like a tulip. In this way, the formation of cracks during the manufacture of glass bottles can be avoided. In particular, the blind holes do not have rotational symmetry.

The following advantageous embodiment variants, alone or in combination with one another, lead to further improvements to the knockouts and therefore to the glass bottle with mechanical stopper.

Each knockout hole is conveniently configured as a curved surface. A proportion of flat, i.e. uncurved, surfaces in the blind hole is preferably limited to a maximum of 40%, more preferably to a maximum of 30%, even more preferably to a maximum of 20%, and even more preferably to a maximum 10% of the entire surface of the blind hole. Preferably each surface curvature in the blind hole, including the edge between the outer wall of the bottleneck and the blind hole (i.e. the edge of the blind hole edge), has a radius of curvature of at least 1 mm or more, more preferably at least 1.2 mm or more, particularly preferably at least 1.3 mm or more.

In an advantageous embodiment, the blind hole does not have planes, that is, it does not have any flat surface. In particular, each blind hole is conveniently configured as a single curved surface; that is, 100% of the surface of the blind hole is configured as a curved surface. Advantageously, each surface in the blind hole, including the edge between the outer wall of the bottleneck and the blind hole (i.e. the edge of the blind hole edge), has a radius of curvature in the range of at least 1 mm and a maximum of 10 mm, more preferably in the range of at least 1.2 mm and a maximum of 7 mm, particularly preferably in the range of at least 1.3 mm and a maximum of 5 mm.

From a technical functional point of view, it is advantageous if the blind hole line (or hole contour) is configured in the course in the longitudinal direction of the bottle neck with the most slope near the bottle mouth (that is, in the upper part of the blind hole) than in the part remote from the mouth of the bottle (that is, in the lower part of the blind hole). In this way, the sides of the blind hole in the longitudinal direction of the bottleneck are formed differently. The most inclined embodiment in the area of the blind hole near the neck of the bottle serves to support the mechanical stopper in the closed position of the mechanical seal, as well as during opening and closing. The at the same time flatter embodiment that occurs in the area of the blind hole remote from the mouth of the bottle increases the volume of the blind hole and has surprisingly been shown to reduce cracks. Although this flatter embodiment in the blind hole area away from the bottle neck, if very pronounced, may cause the closure to partially slide in the open position, this can be tolerated in view of the advantages of a reduced tendency to formation. of cracks and folds.

Advantageously, the glass bottle is made of borosilicate glass. Compared to conventional sodium-calcium glasses, borosilicate glasses typically have better temperature resistance, better resistance to temperature changes, smoother and more pore-free surfaces, and therefore better gloss and lower risk of bacterial attack, higher strength and therefore less likely to break when dropped, and higher chemical resistance, in particular higher resistance to acids.

Blind holes are characterized by the fact that the blind hole contour line of a plane (or, put another way, the blind hole contour line that lies in a plane), which is extended by the longitudinal axis bottleneck and radial direction, no mirror symmetry. This can be described as a first lack of homogeneity. A blind hole contour line is understood as a sectional view of a certain plane with the blind hole or its contour. In the case described, the blind hole contour line is therefore in a plane of vertical cross section with respect to a bottle standing upright.

As a second inhomogeneity, the shape of the hole in the circumferential direction may be mentioned, which differs from the aforementioned hole shape. This is because the blind holes are advantageously further characterized by the fact that the blind hole contour line of a plane normal to the direction of the longitudinal axis of the bottleneck (or expressed in other words, the line of blind hole contour that is in a plane normal to the direction of the longitudinal axis of the bottleneck) has a mirror symmetry. In the described case, the blind hole contour line is in a horizontal cross section plane with respect to a bottle standing upright. Mirror symmetry in this respect is a straight mirror line in the radial direction (and therefore normal to the longitudinal axis of the bottleneck).

Blind holes are advantageously characterized by the fact that a plane extended by the direction of the longitudinal axis of the bottleneck and a radial direction passing centrally through a blind hole form a mirror plane for said blind hole.

Blind holes are preferably characterized in that the blind hole contour line is configured in a plane normal to the direction of the longitudinal axis of the bottleneck, is tulip-shaped with open sides or has open sides.

The first inhomogeneity can optionally be described by the fact that the blind holes are characterized by the fact that they end flatter relative to the longitudinal axis of the bottleneck in the direction opposite to the edge of the bottleneck mouth (i.e. towards the bottle body) than in the direction towards the edge of the bottle neck mouth. More specifically, the blind holes can be described by the fact that, in the axial longitudinal section, a tangent in the blind hole contour line of the lower transition (i.e. the away from the edge of the bottle) from the concave to the convex curvature of the blind hole with the outer liner surface of the bottle neck forms an angle smaller than a tangent on the blind hole contour line of the upper transition (i.e. , the one near the edge of the bottle) from the concave to the convex curvature of the blind hole.

Optionally, an accumulation of material with reinforced wall thickness can be configured around the corresponding blind hole in the bottleneck. The accumulation of material is preferably configured on the outside of the neck of the bottle.

The glass bottle according to the invention is conveniently manufactured by the glass pressing process. A blank is pressed into the bottleneck, in particular in this connection the blind holes are also drilled. Therefore, the blind holes are conveniently shaped in a pressing stage. At the same time and / or shortly before or after, the body of the bottle is blown (preferably against a forming structure).

In this case and in others in which preferred ranges are indicated, other preferred ranges are derived from the combinations of the minimums and maximums mentioned in the ranges.

Brief description of the figures

Other advantages and advantageous features emerge from the following detailed description of various examples of the embodiment of the invention with reference to schematic representations. They show, in a schematic representation that is not true to scale:

Figure 1: a longitudinal image of a bottleneck section according to the invention along the axis of the bottleneck up to the mouth;

Figure 2: an enlarged section of the area of the hole of figure 1;

Figure 3: a comparative section of an orifice area of an embodiment according to the state of the art; Figure 4: an overlap of the orifice area of the embodiment according to the invention of figure 2, of the embodiment according to the state of the art of figure 3 and another alternative embodiment according to the invention;

Figure 5: a top view of the bottleneck section according to the invention according to figure 1 with the marking of the orifice area; line AA indicates the position of the section image for the longitudinal section image of Figure 1;

Figure 6: an enlarged fragment of the area of the hole of figure 5;

Figure 7: a comparative fragment of a hole area of an embodiment according to the state of the art; Figure 8: an overlay of the orifice area of the embodiment according to the invention of figure 6, of the embodiment according to the state of the art of figure 7 and of another alternative embodiment according to the invention;

Figure 9: a longitudinal sectional view of another alternative bottleneck section according to the invention along the bottleneck axis to the mouth;

Figure 10: a top view of the other alternative bottleneck section according to the invention according to figure 9 with the marking of the area of the hole; line AA indicates the position of the sectional image for the longitudinal sectional image of figure 9;

Figure 11: Example of distribution of the dimensions of a blind hole according to an embodiment according to the invention: (a) blind hole line in the longitudinal direction, (b) blind hole line in the circumferential direction.

Figure 12: Example of distribution of the dimensions of a blind hole according to a conventional embodiment: (a) blind hole line in the longitudinal direction, (b) blind hole line in the circumferential direction.

Detailed description of the figures

Identical reference numbers are then used for identical or functionally equal elements in the different figures. An additional apostrophe is used to distinguish between several elements of the same type or functionally equal.

The figures. 1, 5, 9 and 10 show embodiments of a glass bottleneck according to the invention with blind holes for fixing a mechanical stopper. From a first embodiment of Figures 1 and 5, the details of the blind holes are shown in Figures 2 and 6. Figures 3 and 7 show blind holes according to the state of the art. In Figures 4 and 8, the first hole variant according to the invention and an alternative variation thereof are shown in comparative superposition together with a conventional embodiment of the blind hole. Figures 9 and 10 show another alternative embodiment according to the invention. Figure 11 (a) and (b) shows a specific embodiment in dimensions relevant to the invention. In comparison thereon, Fig. 12 (a) and (b) shows a conventional embodiment.

The bottleneck section 11 of a glass bottle shown in figure 1 as a longitudinal section and, in figure 5, as a top view is represented from the beginning of a usual, but optional, reinforcement of the bottleneck wall 12 to and with mouth edge 13. The bottleneck interior wall 15 is conveniently made flat and has a cylindrical passage or a passage that opens slightly conically towards the mouth, which can be useful from the technical point of view of manufacturing. Two blind holes 19, 19 'are located on the outer bottle wall 17 in two diametrically opposite positions. The blind holes 19, 19 'are used for fixing, that is to say for inserting or anchoring, a mechanical plug. A commercially available mechanical plug, for example (not shown in the figures), consisting of an upper wire clamp with plug part and gasket and a lower wire clamp, can be conveniently anchored in the knockouts by means of the wire ends of the lower clamp. The knockouts 19, 19 'are configured asymmetrically at least in the course in the longitudinal direction of the bottleneck (as shown in Figure 1) and therefore have a non-homogeneous knockout pattern. In this regard, the blind hole line (or hole contour) 21, 21 'in the longitudinal direction of the bottleneck is formed with a steeper slope near the bottle mouth (i.e. at the top of the blind hole) with respect to the outer wall of the bottle neck 17 that away from the mouth of the bottle (i.e. at the bottom of the blind hole) or - otherwise expressed - the angle between the tangent (see Figure 11 (a )) in the transition zone from the inlet convex curvature 31 to the concave curvature of the hole base 33 of the upper zone of the blind hole line 21, 21 'and the outer bottleneck wall 17 is greater than the angle between the tangent (see Fig. 11 (a)) in the transition zone from the inlet convex curvature 37 to the concave curvature of the hole base 35 of the lower zone of the blind hole line 21,21 ' and the outer wall of the bottleneck 17. Each of the tangents fo It is typically at an angle of less than 90 ° to the adjacent portion of the outer wall of the bottleneck.

The preferred embodiments are characterized in that, in the axial longitudinal section, the tangent in the line of the blind hole contour 21 of the lower transition (i.e., away from the bottle edge) of the concave curvature of 35 to the convex curvature of 37 of the blind hole 19, 19 ', 92, 92' forms with the outer lining surface of the bottleneck an angle in the range of 10 ° to 70 °, preferably in the range of 20 ° to 65 ° , and the tangent on the blind hole contour line 21 of the upper transition (i.e., close to the edge of the bottle) of concave 33 to convex curvature 31 of blind hole 19, 19 ', 92, 92' forms an angle with the outer covering surface of the bottleneck in the range of 65 ° to 85 °, preferably in the range of 70 ° to 80 °. Figure 2 does not show the mentioned tangents. However, a comparison with Figure 11 (b) illustrates its position.

Conveniently, the blind holes do not have undercuts.

Figures 3 and 7 show a conventional blind hole in the neck of a bottle for a mechanical stopper. The glass material used to make a conventional bottle is usually sodium-calcium glass. Blind hole 41 is a cylindrical drill hole. In particular, it has a circular cylindrical shape. The corresponding blind hole line 43 has a symmetrical shape in the longitudinal direction of the bottleneck. Each of the tangents in the transition zone or the cylindrical wall typically forms an angle of approx. 90 ° (essentially a straight cylindrical shape) with the adjacent section of the outer wall of the bottleneck. In particular in the case of non-sodium-calcium glass, such as borosilicate glass, these drill holes cause cracks when the glass is cooled.

To reduce and preferably prevent the formation of cracks and folds in and around the blind holes (for example, in borosilicate glass), the radii and pattern of the holes or the contour of the holes of a conventional blind hole would have to be designed essentially larger or more generous. However, if the spokes and contour of the hole are designed too generously (for example, if the volume of the hole is too large), the strong force exerted by pulling the clamp upwards and also to the sides can cause the ends come off the clamp.

A force applied upwards ensures pressure and sealing, that is, that the mechanical plug pushes the cover and the sealing ring down, in the same way the force acts on the upper part of the blind hole. An application of force on the sides of the blind hole may be directed, on the one hand, forward towards the lower clamp, since, at the opening, the lower clamp is pulled forward on the blind hole, or, on the other hand side, back, away from the lower clamp, since, during closing, the lower clamp presses back before the pressure is directed essentially upward in the closed end position. For this reason, it is advantageous that a pronounced (eg large area) stop at the top of the blind hole, where the greatest application of force takes place, maintains the clamp in the blind hole. On the blind hole side, certain stop properties are also required. The lowest forces act downward, but the mechanical plug must be prevented from falling out when it is open.

Fig. 4 shows a comparison in the course in the longitudinal direction of the bottleneck of a conventional blind hole line 43 and a first blind hole line 21 according to the invention with termination 53 downwards, as well as a second hole line Blind according to the invention a larger volume blind hole due to a deeper located down termination 55.

The second variant of the blind hole according to the invention as shown above (figure 4), indicates in Compared to the first variant of the blind hole, it is possible to generate even more volume of the blind hole downwards, but that the shape of the blind hole has less room to maneuver upwards and - as explained later - towards the sides.

In FIG. 5, the hole pattern of the blind hole 19 is shown in a top view of the bottleneck mouth 13 in cross-section to the longitudinal extent of the bottleneck. The blind hole lines 61, 61 'are shown in this regard in the course in the circumferential direction. These blind hole lines 61, 61 'are preferably configured symmetrical, in particular symmetrical relative to a straight line of common diameter in the cross-section plane or relative to a plane through the longitudinal axis of the bottleneck.

Comparison of the blind hole lines in the circumferential direction course of Fig. 8 shows that the blind hole line 61 according to the invention is configured considerably flatter than the conventional blind hole line 71, and therefore the blind hole 19 according to the invention as a whole is wider and more voluminous in the circumferential direction (figure 6) than the conventional blind hole 41 (figure 7).

The blind hole lines 61 and 81 in the circumferential direction course of the two embodiments according to the invention shown in Figure 4 are consistent with those of Figure 8. The second variant of blind hole according to the invention, as It has been shown above (Figure 8), therefore indicating, in comparison with the first blind hole variant, that the blind hole shape also has less clearance on the side than down.

Figures 9 and 10 show a longitudinal sectional view and a top view of another alternative variant of the blind hole according to the invention. This blind hole 92, 92 'has a clear stop, that is to say, relatively short and pronounced, in the upper part of the blind hole and a relatively long and flat termination 95 in the opposite opposite part of the blind hole. The blind hole line 101 has a pronounced blind hole bottom in the course in the circumferential direction.

Concrete embodiments of blind holes of an embodiment according to the invention or a conventional embodiment are shown in Fig. 11 or Fig. 12. From this, it is possible to deduce relations of preferred dimensions of the holes.

An advantageous embodiment is characterized in that the sum of the convex edge radius 37 and the concave hole radius 35 at the bottom of the blind hole (i.e. on the side of the blind hole near the edge of the bottle) is greater than the sum of the convex edge radius 31 and the concave hole radius 33 at the top of the blind hole (i.e. on the side of the blind hole near the edge of the bottle).

An advantageous variant is characterized in that the sum of the convex edge radius and the concave hole radius 31 and 33 at the top of the blind hole (i.e. on the side of the blind hole near the edge of the bottle) is greater than 50%, preferably greater than 60%, more preferably greater than 70%, more preferably greater than 80%, more preferably greater than 90%, more preferably greater than 100%, of the hole depth, and / or due to the fact that, on the longitudinal side of the blind hole (i.e. with respect to the longitudinal (axial) direction of the bottleneck), the sum of the radius of the convex edge and the radius of the concave hole is greater than 50%, preferably greater than 60%, more preferably greater than 70%, more preferably greater than 80%, more preferably greater than 90%, more preferably greater than 100%, of the depth of the hole. It is assumed - without this implying a guarantee - that, in processing conditions (particularly in shaping conditions such as, for example, pressing and blowing during the manufacture of bottles), the glass material that has the worst shaping properties (for example, a behavior harder) than conventional glass material (i.e. harder than conventional sodium-calcium glass), in the asymmetric configuration according to the invention particularly benefits from a blind hole embodiment configured as closely as possible bulky as a whole possible and / or, in particular, as rounded as a whole, because due to the particular design, fewer flow distortions occur during the forming processes and, therefore, the chilled glass contains less or no crack.

Although specific embodiments have been described above, it is obvious that different combinations of the possibilities of realization can be used, insofar as the possibilities of realization are not mutually exclusive.

Although the invention has been described above with reference to specific embodiments, it is obvious that changes, modifications, variations and combinations can be made without departing from the concept of the invention.

Reference list

11 Bottleneck section according to a first variant of the invention, essentially a final section of the bottleneck with reinforced wall

12 Transition to the end zone of the bottleneck with reinforced wall

13 Bottleneck Mouth Edge

Bottleneck Inner Wall

Bottleneck Outer Wall

, 19 'Blind hole

, 21 'Blind hole (contour) line in longitudinal direction

Superior convex curvature

Upper concave curvature

Lower concave curvature

Lower convex curvature

Round blind hole according to the state of the art

Blind hole (contour) line in the longitudinal direction according to the state of the art Downward termination of downward management according to a first variant of the invention Downward termination according to a second variant of the invention

, 61 'Blind hole (contour) line in the circumferential direction

Blind hole (contour) line in the circumferential direction according to the state of the art Blind hole (contour) line in the circumferential direction according to the second variant according to the invention

Bottleneck section according to a third variant according to the invention, essentially a bottleneck end zone with reinforced wall

, 92 'Blind hole

Blind hole line in longitudinal direction

Termination down

Transition to the end zone of the bottleneck with reinforced wall

1 blind hole line in the circumferential direction

Claims (14)

1. Bottleneck glass bottle (11, 91) with blind holes (19, 19 ', 92, 92') on the outer side of the bottleneck for a mechanical stopper, the blind holes (19, 19 being asymmetrical ', 92, 92') in the sense that they are configured asymmetrically at least in the course in the longitudinal direction of the bottleneck, characterized in that - each blind hole (19, 19 ', 92, 92') is configured as a curved surface that includes concave and convex shaped zones, - the blind hole contour line (61, 61, 61 ', 101, 101'), which is in a plane normal to the direction of the longitudinal axis of the bottleneck, has extended sides or is shaped like a lampshade. Glass bottle according to the preceding claim, characterized in that the line of blind holes in the longitudinal direction of the bottle neck is configured more inclined near the bottle mouth than far from the bottle mouth. Glass bottle according to one of the preceding claims, characterized in that the glass bottle is made of non-sodium-calcium glass, preferably borosilicate glass. Glass bottle according to one of the preceding claims, characterized in that each blind hole (19, 19 ', 92, 92') is configured as a curved surface, each surface curvature in the blind hole having a radius of curvature of at minus 1 mm or more, preferably at least 1.2 mm or more, particularly preferably at least 1.3 mm or more. Glass bottle according to one of the preceding claims, characterized in that the blind holes are characterized in that the contour line of the blind hole (21, 53, 55, 93, 93, 93 ') of a plane crossed by the axis longitudinal of the bottleneck and a radial direction does not show mirror symmetry. Glass bottle according to one of the preceding claims, characterized in that the blind holes are characterized in that the blind hole contour line (61, 61 ', 101, 101') of a plane normal to the longitudinal direction of the neck bottle has a mirror symmetry. Glass bottle according to one of the preceding claims, characterized in that the blind holes are characterized in that a plane traversed by the longitudinal direction of the bottle neck and a radial direction leading centrally through a blind hole (19, 19 ', 92, 92') forms a mirror plane for said blind hole. Glass bottle according to one of the preceding claims, characterized in that the blind holes (19, 19 ', 92, 92') are characterized in that they end more flat with respect to the longitudinal axis of the bottle neck in the opposite direction to edge of the bottleneck than in the direction towards the edge of the bottleneck mouth. Glass bottle according to one of the preceding claims, characterized in that the blind holes are characterized in that, in the axial longitudinal section, a tangent in the blind hole contour line (21) of the lower transition (that is, away from the edge of the bottle) from the concave (35) to the convex (37) curvature of the blind hole (19, 19 ', 92, 92') with the outer lining surface of the bottle neck forms a smaller angle than a tangent on the blind hole contour line (21) of the upper transition (i.e. close to the bottle edge) of the concave (33) to the convex curvature (31) of the blind hole. Glass bottle according to the preceding claim, characterized in that , in the axial longitudinal section, the tangent in the blind hole contour line (21) of the lower transition (that is, the distance away from the bottle edge) of the Concave (35) to convex (37) curvature of the blind hole (19, 19 ', 92, 92') forms with the outer liner surface of the bottleneck an angle in the range of 10 ° to 70 °, preferably at the interval from 20 ° to 65 °, and the tangent on the blind hole contour line (21) of the upper transition (i.e., close to the edge of the bottle) of the concave (33) to the convex curvature ( 31) of the blind hole (19, 19 ', 92, 92') forms an angle with the outer liner surface of the bottleneck in the range of 65 ° to 85 °, preferably in the range of 70 ° to 80 °. Glass bottle according to one of the preceding claims, characterized in that the sum of the radius of the convex edge (37) and the radius of the concave hole (35) in the lower part of the blind hole (that is, on the side of the hole blind away from the edge of the bottle) is greater than the sum of the convex edge radius (31) and the concave hole radius (33) at the top of the blind hole (i.e. on the side of the blind hole near the edge Of the bottle). Glass bottle according to one of the preceding claims, characterized in that the sum of the radius of the convex edge (31) and the radius of the concave hole (33) in the upper part of the blind hole (that is, on the side of the hole blind near the edge of the bottle) is greater than 50%, preferably greater than 60%, more preferably greater than 70%, more preferably greater than 80%, more preferably greater than 80%, more preferably greater than 90%, more preferably greater than 100%, of the depth of the hole. Glass bottle according to one of the preceding claims, characterized in that, on the longitudinal side of the blind hole (ie, with respect to the axial direction of the bottle neck, laterally to the blind hole), the sum of the edge radius convex and the radius of concave hole is greater than 50%, preferably greater than 60%, more preferably greater than 70%, more preferably greater than 80%, more preferably greater than 90%, more preferably greater than 100%, of the depth of the hole. Glass bottle according to one of the preceding claims, characterized in that the shaping of the blind holes (19, 19 ', 92, 92') is carried out in a pressing step.