EP3181470B1 - Glass bottle for use with swing stopper - Google Patents

Description

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 may be provided with a clip closure, for example to seal beverage bottles which are under pressure due to the carbonic acid content in the beverage. The opening and closing of a swing-top closure can be done as often as desired by hand and requires no aid. Conventional swing top glass bottles are made of soda lime glass, a bulk glass used to make container glass and flat glass. Lime-soda-glass has relatively good chemical properties and is suitable for products that usually have to withstand short-term chemical stress and are not subject to high thermal loads.

In the published patent application DE 3433612 A1 a method for use under different bottle closures is disclosed. For this purpose, holders are provided for clip closures below the mouthpieces, which allow by their design the stripping and easy handover of the strap closures from bottle to bottle. The brackets for buckles, which are used in this case consist of two opposing, vertically arranged and injected into the bottle grooves, the top are round-ended and run down to the bottleneck just.

A glass material that better withstands a variety of influences is borosilicate glass, for example. This is considered chemical, temperature and temperature change resistant Glass is known and widely used as a container glass in chemistry and in general in the industry.

It has now been found that a production of U-shaped glass bottles from another glass material is not readily possible. When using borosilicate glass as the starting material for U-shaped glass bottles, the circular holes in the bottleneck, which are intended for the attachment of the U-shaped lock, led to cracks during the cooling of the glass.

TASK

It is therefore an object of the present invention to find a solution to the problem of cracking. In particular, it is the object of the present invention to provide an alternative glass bottle or an alternative glass bottle neck for clip closures and an alternative method for producing a glass bottle or a glass bottle neck for clip closures. In particular, it is an object of the present invention to provide a glass bottle of borosilicate glass which is suitable for clip-on closure.

DESCRIPTION OF THE INVENTION

In the manufacture of glass bottles, in particular the usual press-blow process, cracks may occur around the blind holes. This problem is particularly acute with glass bottles made of glass other than soda-lime glass, e.g. made of borosilicate glass. If the blind holes are formed as usual in conventional soda-lime glass bottles as circular cylindrical depressions, then, depending on the glass composition, cracks in the bottleneck result in areas around the blind holes. Surprisingly, it has been found that cracks, especially in non-soda-soda glasses, e.g. Borosilicate glass, can be prevented if the blind holes are formed asymmetrically at least in the bottle neck longitudinal direction and thus have an overall inhomogeneous blind hole pattern.

The term "blind hole pattern" includes in particular the hole contour with its sequence of concave and convex shaped areas, the ratios of concave and convex shaped areas and their symmetry training or lack of symmetry education.

A glass bottle according to the invention comprising a bottleneck with neck holes on the outside of the bottle neck for a clip closure is characterized in that each blind hole is formed as a curved surface including concave and convex shaped regions, and the blind hole contour line lying in a plane normal to the bottleneck longitudinal axis has or has splayed legs is tulip-shaped. Cracking in glass bottle production can be prevented. In particular, the blind holes have no rotational symmetry.

The further advantageous variants listed below lead, alone or in combination with one another, to further improvements of the blind holes and thus of the flip top glass bottle.

Each blind hole is expediently designed as a curved surface. A share of planning, i. not curved 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 of 10% of the total blind hole area. Preferably, each surface curvature in the blind hole, including the edge between bottleneck outer wall and blind hole (ie 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, more preferably at least 1.3 mm or more ,

In an advantageous embodiment, the blind hole has no planes, i. no plane surfaces, on. In particular, each blind hole is expediently designed as a single curved surface; i.e. 100% of the blind hole surface is formed as a curved surface. Advantageously, each surface in the blind hole, including the edge between bottleneck outer wall and blind hole (ie the blind hole edge), has a radius of curvature in the range of at least 1 mm and at most 10 mm, more preferably in the range of at least 1.2 mm and at most 7 mm, particularly preferably in the range of at least 1.3 mm and a maximum of 5 mm.

Functionally, it is advantageous if the blind hole line (or hole contour) in Flaschenhalslängsrichtungsverlauf bottle mouth close (ie Sacklochoberseitig) is steeper than flaschenmündungsfern (ie blind hole underside). Thus, overall, the legs of the blind hole in the bottle neck longitudinal course are shaped differently. The steeper design in the area close to the bottle mouth of the blind hole serves to support the closure bar in the closed position of the clip closure and when opening and closing. The simultaneously flatter design in the bottle mouth remote area of the blind hole increases the blind hole volume and was surprisingly recognized as crack-reducing. If necessary, this flatter embodiment in the area of the blind hole which is remote from the mouth of the bottle mouth can, if it is pronounced, cause the bow to slip partially into place but can be tolerated in view of the benefits of a reduced tendency to crack and wrinkle.

Advantageously, the glass bottle is made of borosilicate glass. Borosilicate glass normally has better temperature resistance, better thermal shock resistance, pore-free and smoother surfaces, and thus better gloss and risk of bacterial attack, higher strength, and thus less likely to break when dropped, and in particular, higher chemical resistance compared to conventional soda-lime glass a better acid resistance.

The blind holes are characterized in that the blind hole contour line of a plane (or in other words - that the blind hole contour line which lies in a plane), which is spanned by the bottle neck longitudinal axis and a radial direction, has no mirror symmetry. This can be referred to as a first inhomogeneity. A blind hole contour line is understood as a sectional view of a particular plane with the blind hole or its contour. For the case described, the blind hole contour line thus lies in a vertical cross-sectional plane with respect to a vertical bottle.

As a second inhomogeneity of the aforementioned hole shape in the bottleneck longitudinal course differing hole shape can be called in the circumferential direction. Because the blind holes are advantageously further characterized in that the blind hole contour line of a plane normal to Flaschenhalslängsachsrichtung (or in other words - that the blind hole contour line which lies in a plane normal to Flaschenhalslängsachsrichtung) has a mirror symmetry. For the case described, the blind hole contour line thus lies in a horizontal cross-sectional plane with respect to a vertical bottle. The mirror symmetry is a mirror straight line in the radial direction (and thus normal to the bottleneck longitudinal axis).

The blind holes are advantageously characterized in that a plane, spanned by the bottleneck longitudinal axis direction and a radial direction, which leads centrally through a blind hole, forms a mirror plane for said blind hole.

The blind holes are preferably characterized in that the blind hole contour line is formed in a plane normal to Flaschenhalslängsachsrichtung tulip-shaped with spread legs or has spread legs.

Optionally, the first inhomogeneity may be described as the blind holes being characterized as being flatter towards the bottleneck longitudinal axis in a direction away from the bottle neck skirt (i.e., towards the bottle body), rather than toward the bottle neck mouth. More concretely, the blind holes can be described by making a tangent to the blind hole contour line of the bottom (ie, the rim) distal of the blind hole to the outer bottle neck surface smaller than a tangent to the blind hole contour line of the upper (ie near the rim of the bottle), the transition from concave to convex curvature of the blind hole.

Optionally, an accumulation of material with an increased wall thickness can be formed around the respective blind hole at the bottleneck. An accumulation of material is preferably formed on the outside of the bottle neck.

Conveniently, the glass bottle according to the invention is produced by the pressure blow molding process. In this case, a blank is pressed on the neck of the bottle, in particular, the blind holes are also inserted. The shaping of the blind holes thus takes place expediently in one pressing step. At the same time and / or shortly before or after, the bottle body is inflated (preferably against a shaping structure).

Here and in the following where preferred ranges are indicated, further preferred ranges result from combinations of the minima and maxima mentioned in the ranges

BRIEF DESCRIPTION OF THE FIGURES

Figur 1:

ein Längsschnittbild eines erfindungsgemässen Flaschenhalsabschnitts entlang der Flaschenhalsachse bis zur Mündung;

Figur 2:

ein vergrösserter Ausschnitt des Lochbereichs in Fig. 1;

Figur 3:

ein Vergleichsausschnitt eines Lochbereichs einer Ausführung nach dem Stand der Technik;

Figur4:

eine Überlagerung des Lochbereichs der erfindungsgemässen Ausführung in Fig. 2, der Ausführung nach dem Stand der Technik in Fig. 3 und einer weiteren, alternativen erfindungsgemässen Ausführung ;

Figur 5:

ein Draufsicht auf den erfindungsgemässen Flaschenhalsabschnitt nach Fig. 1 mit Kennzeichnung des Lochbereichs; die Linie AA zeigt die Schnittbildposition für das Längsschnittbild der Fig. 1 an;

Figur 6:

ein vergrösserter Ausschnitt des Lochbereichs in Fig. 5;

Figur 7

ein Vergleichsausschnitt eines Lochbereichs einer Ausführung nach dem Stand der Technik;

Figur 8

eine Überlagerung des Lochbereichs der erfindungsgemässen Ausführung in Fig. 6, der Ausführung nach dem Stand der Technik in Fig. 7 und einer weiteren, alternativen erfindungsgemässen Ausführung;

Figur 9

ein Längsschnittbild eines weiteren alternativen erfindungsgemässen Flaschenhalsabschnitts entlang der Flaschenhalsachse bis zur Mündung;

Figur 10

eine Draufsicht auf den weiteren alternativen erfindungsgemässen Flaschenhalsabschnitt nach Fig. 9 mit Kennzeichnung des Lochbereichs; die Linie AA zeigt die Schnittbildposition für das Längsschnittbild der Fig. 9 an;

Figur 11

Beispiel einer Sacklochabmessungsverteilung gemäss einer erfindungsgemässen Ausführung: (a) Sacklochlinie in Längsrichtung, (b) Sacklochlinie in Umfangsumlaufrichtung.

Figur 12

Beispiel einer Sacklochabmessungsverteilung gemäss einer herkömmlichen Ausführung: (a) Sacklochlinie in Längsrichtung, (b) Sacklochlinie in Umfangsumlaufrichtung.

Further advantages and advantageous features will become apparent from the following detailed description of several embodiments of the invention with reference to schematic representations. In a not to scale, schematic representation:

FIG. 1:

a longitudinal sectional image of an inventive neckline section along the bottleneck axis to the mouth;

FIG. 2:

an enlarged section of the hole area in Fig. 1 ;

FIG. 3:

a comparison section of a hole portion of a prior art embodiment;

Figur4:

a superposition of the hole portion of the inventive embodiment in Fig. 2 , the execution of the prior art in Fig. 3 and a further, alternative embodiment according to the invention;

FIG. 5:

a plan view of the invention according to the bottle neck section Fig. 1 with marking of the hole area; the line AA shows the sectional image position for the longitudinal sectional image of Fig. 1 at;

FIG. 6:

an enlarged section of the hole area in Fig. 5 ;

FIG. 7

a comparison section of a hole portion of a prior art embodiment;

FIG. 8

a superposition of the hole portion of the inventive embodiment in Fig. 6 , the execution of the prior art in Fig. 7 and a further, alternative embodiment according to the invention;

FIG. 9

a longitudinal sectional image of a further alternative inventive neckline section along the bottleneck axis to the mouth;

FIG. 10

a plan view of the further alternative inventive bottle neck section Fig. 9 with marking of the hole area; the line AA shows the sectional image position for the longitudinal sectional image of Fig. 9 at;

FIG. 11

Example of a blind-hole dimension distribution according to an embodiment according to the invention: (a) blind-hole line in the longitudinal direction, (b) blind-hole line in the peripheral circumferential direction.

FIG. 12

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

DETAILED DESCRIPTION OF THE FIGURES

In the following, the same reference numerals are used for identical or functionally identical elements in different figures. An additional apostrophe is used to distinguish between several similar or functionally identical elements.

In the Fig. 1 . 5 . 9 and 10 Embodiments of a glass bottle neck according to the invention with blind holes for fastening a clip closure are shown. To a first execution in the Fig. 1 and 5 Be details of the blind holes in the Fig. 2 and 6 demonstrated. The Fig. 3 and 7 show blind holes according to the prior art. In the Fig. 4 and 8th the first blind-hole variant according to the invention and an alternative modification thereof are compared with a conventional blind-hole design in an overlapping manner. FIGS. 9 and 10 show a further alternative embodiment according to the invention. In Fig. 11 (a) and (b) a concrete embodiment is shown in the invention relevant dimensioning. Comparative shows Figs. 12 (a) and (b) a conventional design.

The in Fig. 1 as a longitudinal section and in Fig. 5 Bottom neck portion 11 of a glass bottle, shown as a plan view, is shown from the beginning of a customary but optional bottleneck wall reinforcement 12 to and with mouth edge 13. The bottleneck inner wall 15 is expediently made flat and has a cylindrical or a passage which opens slightly conically toward the mouth, which can be expedient in terms of manufacturing technology. In the bottle outer wall 17 are two blind holes 19, 19 'at two diametrically opposite positions. The blind holes 19, 19 'are used for attachment, ie for insertion or anchoring, a clip closure. For example, a commercially available clip lock (not shown in the figures), which consists of an upper wire bow with lid part and seal and a lower wire hanger, can be conveniently anchored on the wire ends of the lower bracket in the blind holes. The blind holes 19, 19 'are at least in the bottleneck longitudinal direction course (as in Fig. 1 shown) formed asymmetrically and thus have an inhomogeneous blind hole image. In this case, the blind hole line (or hole contour) 21, 21 'in the bottle neck longitudinal direction with respect to the Flaschenhalsaussenwand 17 close to the bottle mouth (ie Sacklochoberseitig) formed as flaschenmündungsfern (ie blind hole underside) - or in other words - is the angle between the tangent (see. Fig. 11 (a) ) at the transition region from the convex input curvature 31 to the concave hole base curvature 33 of the upper region of the blind hole line 21, 21 'and the bottleneck outer wall 17 is greater than the angle between the tangent (cf. Fig. 11 (a) ) at the transition region from convex input curvature 37 to concave hole base curvature 35 of the lower portion of the blind hole line 21, 21 'and bottleneck outer wall 17. Each of the tangents typically forms an angle with the adjacent bottle neck outer wall portion which is less than 90 °.

Preferred embodiments are characterized in that in the axial longitudinal section the tangent to the blind hole contour line 21 of the lower (ie the flaschenrandfernen) transition from concave 35 to convex 37 curvature of the blind hole 19, 19 ', 92, 92' with the outer bottle neck surface an angle in Range of 10 ° to 70 °, preferably in the range of 20 ° to 65 °, and the tangent to the blind hole contour line 21 of the upper (ie the bottle rim near) transition from concave 33 to 31 convex curvature of the blind hole 19, 19 ', 92, 92 'with the outer bottle neck surface forms an angle in the range of 65 ° to 85 °, preferably in the range of 70 ° to 80 °. In Fig. 2 the mentioned tangents are not drawn. A comparison with Fig. 11 (b) but clarifies their situation.

Conveniently, the blind holes have no undercuts.

A conventional blind hole at the bottleneck for a strap closure is shown in FIGS. 3 and 7. The glass material used to make a conventional bottle is usually a soda-lime glass. The blind hole 41 is a cylinder-like puncture hole. It has in particular a circular cylindrical shape. The corresponding blind hole line 43 has a symmetrical shape in the direction of the bottleneck longitudinal direction. Each of the transition area tangents or the cylinder wall typically forms an angle of approximately 90 ° with the adjoining bottleneck outer wall section (essentially a straight cylindrical shape). Especially with non-soda-soda lime glass, e.g. Borosilicate glasses, such puncture holes lead to cracks during the cooling of the glass.

In order to reduce and preferably prevent cracking and wrinkling on and around blind holes (in, for example, borosilicate glasses), the radii and the hole pattern or the hole contour of a conventional blind hole would have to be made considerably larger or more generous. However, if the radii and hole contour are too generous (because the hole volume is very large, for example), the temple may be pulled upwards due to the strong force and also towards the sides when the temple tips out.

A force upwards ensures the pressure and the seal, ie the clip closure pulls the lid and sealing ring down, equally the force acts on the top of the blind hole. A force acting on the sides of the blind hole may be directed to the front of the lower bracket, because when opening the lower bracket in the blind hole pulled forward, or be directed to the other backwards from the lower bracket away, because when closing pushes the lower bracket back before the Pressure is then passed in the closed end position substantially upwards. For this reason, it is advantageous if blind-top side, where the largest force occurs, a pronounced attack (eg large area) holding the bracket in the blind hole. Sacklochseitlich certain stop properties are also required. The lowest forces act downwards, but slipping out of the opened swing-top closure should be prevented.

In Fig. 4 a comparison in Flaschenhalslängsrichtungsverlauf a conventional blind hole line 43 and a first inventive blind line 21 with outlet 53 is shown down and a second novel blind line of a blind hole with a larger volume due to a lower outlet 55 down.

The second blind hole variant according to the invention as shown above ( Fig. 4 ), suggests in comparison to the first blind hole variant out that even more blind hole volume can be generated down, however, the blind hole shape upwards and - as explained below - on the side has less leeway.

In Fig. 5 is shown in a plan view of the bottleneck mouth 13, the hole pattern of the blind hole 19 in cross section to the bottleneck elongation. In this case, blind lines 61, 61 'are shown in the circumferential direction of rotation. These blind hole lines 61, 61 'are preferably formed symmetrically, in particular symmetrically with respect to a common diameter straight in the cross-sectional plane or with respect to a plane through the bottle neck longitudinal axis.

The comparison of blind lines in the circumferential direction of rotation in Fig. 8 shows that the inventive blind hole line 61 with respect to the conventional blind hole line 71 significantly flatter and thus the inventive blind hole 19 in the circumferential direction ( Fig. 6 ) is generally wider and more voluminous than the conventional blind hole 41 (FIG. Fig. 7 ).

The blind lines 61 and 81 in the peripheral circumferential direction of the in Fig. 4 two embodiments according to the invention shown in FIG Fig. 8 congruent. The second blind hole variant according to the invention as shown above ( Fig. 8 ), suggests in comparison to the first blind hole variant thus indicates that the blind hole also on the side also less margin than down.

In FIGS. 9 and 10 a longitudinal sectional view and a plan view of a further alternative inventive blind hole variant are shown. This blind hole 92, 92 'has a clear, ie relatively short and steep stop on the blind hole top and on the other hand at the bottom of the blind hole a relatively long and flat outlet 95. The blind line 101 has a pronounced blind hole in the circumferential direction of rotation.

In Fig. 11 or in Fig. 12 Be specific blind hole embodiments of an inventive embodiment bezugsweise a conventional design shown. From this, preferred hole dimension ratios can be derived.

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

An advantageous embodiment is characterized by the fact that the sum of convex edge radius and concave hole radius 31 and 33 is greater than 50%, preferably greater than 60%, more preferably greater than 70%, on the top side of the blind hole (ie on the side of the blind hole near the edge of the bottle) preferably greater than 80%, more preferably greater than 90%, more preferably greater than 100%, the depth of the hole, and / or that blind hole long side (ie with respect to the bottleneck (achs) longitudinal direction laterally of the blind hole) the sum of convex edge radius and concave Hole radius 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%, the Lochtiefe.Es will - without bothering to be presumed - glass material which is used under machining conditions (in particular under molding conditions, such as pressing and blowing in the production of Bottles) poorer shaping properties (eg tougher behaves) than conventional glass material (ie, tougher than conventional soda lime glass), in the asymmetric embodiment according to the invention of a total possible voluminous trained and / or in particular as complete as possible rounded bottom hole execution particularly benefits, because due to the special design at Forming processes less flow distortions arise and thus less or no cracks are contained in the cooled glass.

While specific embodiments have been described above, it will be apparent that various combinations of the illustrated embodiments may be used so far as the embodiments are not mutually exclusive.

While the invention has been described above with reference to specific embodiments, it will be apparent that changes, modifications, variations and combinations may be made without departing from the spirit of the invention.

LIST OF REFERENCE NUMBERS

11

Bottle neck section according to a first inventive variant, essentially a wall-reinforced bottleneck end region

12

Transition to wall-reinforced bottleneck end area

13

Bottleneck mouth edge

15

Bottleneck inner wall

17

Bottleneck outer wall

19, 19 '

blind

21, 21 '

Blind hole (contour) line in longitudinal direction

31

upper convex curvature

33

upper concave curvature

35

lower concave curvature

37

lower convex curvature

41

round blind hole according to the prior art

43

Blind hole (contour) line in the longitudinal direction according to the prior art

53

Downflow according to the first inventive variant

55

Outlet down according to a second inventive variant

61, 61 '

Blind hole (contour) line in circumferential direction

71

Blind hole (contour) line in circumferential direction according to the prior art

81

Blind hole (contour) line in circumferential direction according to the second inventive variant

91

Bottle neck portion according to a third variant of the invention, essentially a wall-reinforced Flaschenhalsendbereich

92, 92 '

blind

93

Blind hole line in the longitudinal direction

95

Spout down

99

Transition to wall-reinforced bottleneck end area

101

Blind hole line in circumferential direction

Claims (14)

1. Glass bottle with a bottleneck (11, 91) with blind holes (19, 19', 92, 92') on the outer side of the bottleneck for a swing top, wherein the blind holes (19, 19', 92, 92') are asymmetrical, whereby they are configured asymmetrical at least in the extension of the bottleneck longitudinal direction,
   characterized in that

   - each blind hole (19, 19', 92, 92') is configured as a curved surface containing regions with a concave and regions with a convex shape,

   - the blind hole contour line (61, 61', 101, 101') that is situated in a plane perpendicularly to the extension of the bottleneck longitudinal direction has spread branches or is configured with a tulip shape.
2. Glass bottle according to the preceding claim, characterized in that the blind hole line in the extension of the bottleneck longitudinal direction is configured steeper near the bottle mouth than far from the bottle mouth.
3. Glass bottle according to one of the preceding claims, characterized in that the glass bottle is made of non soda-lime glass, preferably of borosilicate glass.
4. 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, wherein each surface curvature in the blind hole has a radius of curvature of at least 1 mm or more preferably of at least 1,2 mm or more, particularly preferably of at least 1,3 mm or more.
5. Glass bottle according to one of the preceding claims, characterized in that the blind holes can be identified in that the blind hole contour line (21, 53, 55, 93, 93') of a plane that covers the bottle neck longitudinal axis and a radial direction does not have any mirror symmetry.
6. Glass bottle according to one of the preceding claims, characterized in that the blind holes can be identified in that the blind hole contour line (61, 61', 101, 101') of a plane perpendicularly to the bottleneck longitudinal direction has mirror symmetry.
7. Glass bottle according to one of the preceding claims, characterized in that the blind holes can be identified in that a plane that covers the bottle neck longitudinal direction and a radial direction that extends centrally through a blind hole (19, 19', 92, 92') forms a mirror plane for said blind hole.
8. Glass bottle according to one of the preceding claims, characterized in that the blind holes (19, 19', 92, 92') can be identified in that they run out flatter in direction away from the bottle neck edge than in direction towards the bottle neck mouth edge with respect to the bottle neck longitudinal axis.
9. Glass bottle according to one of the preceding claims, characterized in that the blind holes can be identified in that, in the axial longitudinal section, a tangent on the blind hole contour line (21) of the lower (i.e. far from the bottle edge) transition from the concave (35) to the convex (37) curvature of the blind hole (19, 19', 92, 92') forms a smaller angle with the outer bottle neck lateral surface than a tangent on the blind hole contour line (21) of the upper (i.e. near the bottle edge) transition from the concave (33) to the convex (37) curvature of the blind hole.
10. Glass bottle according to one of the preceding claims, characterized in that, in the axial longitudinal section, the tangent on the blind hole contour line (21) of the lower (i.e. far from the bottle edge) transition from the concave (35) to the convex (37) curvature of the blind hole (19, 19', 92, 92') forms an angle in the range of 10° to 70°, preferably in the range of 20° to 65°, with the outer bottle neck lateral surface and the tangent on the blind hole contour line (21) of the upper (i.e. near the bottle edge) transition from the concave (33) to the convex (31) curvature of the blind hole (19, 19', 92, 92') forms an angle in the range of 65° to 85°, preferably in the range of 70° to 80°, with the outer bottle neck lateral surface.
11. Glass bottle according to one of the preceding claims, characterized in that the sum of the convex edge radius (37) and of the concave hole radius (35) on the blind hole lower side (i.e. on the side of the blind hole far from the bottle edge) is higher than the sum of the convex edge radius (31) and of the concave hole radius (33) on the blind hole upper side (i.e. on the side of the blind hole near the bottle edge).
12. Glass bottle according to one of the preceding claims, characterized in that the sum of the convex edge radius (31) and of the concave hole radius (33) on the blind hole upper side (i.e. on the side of the blind hole near the bottle edge) is higher than 50%, preferably higher than 60%, more preferably higher than 70%, still more preferably higher than 80%, still more preferably higher than 90%, still more preferably higher than 100% of the hole depth.
13. Glass bottle according to one of the preceding claims, characterized in that the sum of the convex edge radius and of the concave hole radius on the blind hole longitudinal side (i.e. on the side of the blind hole with respect to the bottle neck axis direction) is higher than 50%, preferably higher than 60%, more preferably higher than70%, still more preferably higher than 80%, still more preferably higher than 90%, still more preferably higher than 100% of the hole depth.
14. Glass bottle according to one of the preceding claims, characterized in that the shaping of the blind holes (19, 19', 92, 92') is performed in a pressing step.

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