JP2016196331A - Bottle having closing cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid going-out of carbonic acid, by guaranteeing extremely excellent sealing of a bottle, even when internal pressure of the bottle is extremely high.SOLUTION: A bottle 1 comprises a bottle body 2 composed of light metal and a neck 3 having an outer screw 4, and in its case, the bottle 1 comprises a closing cap 5 of a sleeve shape having a cover 6 for closing an opening part of the bottle 1 and a jacket surface 7 continuing with the cover 6 and having a screw 8 corresponding to the outer screw 4 of the neck 3. The edge 9 of the neck 3 of the bottle 1 is formed of a folded-back part 10 of the neck 3 for forming a protrusion part for making a round around the opening part of the bottle 1, and in its case, a free end part of the folded-back part 10 turns in the direction of an outside surface or an inside surface of the bottle 1, the folded-back part 10 is curvedly formed in an area of an apex part 11 of turning to the cover of the edge 9, and the edge 9 of the bottle 1 has a substantially O-shaped cross-section.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bottle having a bottle body made of light metal, wherein the neck of the bottle has an external screw, and the bottle has a cover for closing the opening of the bottle and a jacket surface continuous to the cover. With a sleeve-shaped closure cap with a jacket surface having threads corresponding to the outer threads of the neck in the closed state of the bottle.

  The types of bottles mentioned at the beginning are often used as disposable bottles for beverages, in particular beverages containing carbonic acid. Beverages containing qualitatively high value carbonates can be pasteurized after filling and closing the bottle. In that case, based on the high temperature and the carbonic acid contained in the beverage, a very high internal pressure of, for example, 5-6 bar may be produced in the bottle, thereby causing unintentional carbonation in the region of the closure cap. May result in missing. This is because the high internal pressure can result in poor sealing in the area of the bottle closure. However, a decrease in the carbonic acid content results in an undesirable degradation of the beverage quality.

  The object of the present invention is therefore to guarantee a very good sealing of the bottle and to prevent the escape of carbonic acid even when the internal pressure of the bottle is very high.

  According to the present invention, this problem is formed by the bottles of the type mentioned at the outset, by the folded part of the neck, where the edge of the neck of the bottle forms a bulge that goes around the opening of the bottle body. In this case, the free end portion of the folded portion faces the outer surface or the inner surface of the bottle, and the folded portion is curved in the region of the top portion facing the cover of the end closure cap. This is solved by the fact that the bottle edge has a substantially O-shaped cross section.

  The solution according to the invention ensures that the edge is in optimum and tight contact with the groove, so that even when the internal pressure of the bottle is high, as in the case of pasteur sterilization, a high sealing performance is achieved. Given.

  Based on the cross-section of the edge being O-shaped, the folded part is almost closed. That is, the free end of the folded portion abuts against the outer surface of the bottle, or the gap between the free end of the folded portion and the outer surface of the bottle is extremely small and does not exceed 0.5 mm.

  Particularly preferably, the closure cap has a base body made of light metal. This embodiment is particularly characterized in that the screw of the closure cap is formed by one or more rollers that imprint the outer thread of the bottle neck into the material of the closure cap by a rolling process.

  According to a preferred variant of the invention, which allows for very thin wall thicknesses in addition to low weight, the bottle body and / or the base body of the closure cap can be made of aluminum or an aluminum alloy.

  The body of the bottle may have a wall thickness of 0.5 mm or less in the region between the bottle neck and bottom.

  The inside of the jacket surface of the closure cap can be painted with paint so that the bottle can be opened easily, in which case the coefficient of static friction between the paint and aluminum is It is smaller than the static friction coefficient between. The paints listed above can have, for example, at least 1-2 weight percent wax and / or other friction reducing additives such as graphite particles.

  The opening process is further simplified by painting the outer surface of the closure cap with paint, in which case the coefficient of static friction between the human skin and the matte paint is the static coefficient between the aluminum and the human skin. Greater than friction coefficient. The paint used to paint the outer surface of the closure cap can have additives that increase friction, such as rubber particles.

  It has been found that it is particularly preferred if the closure cap is formed closed except for an opening for accommodating the neck of the bottle, in which case the jacket surface of the closure cap is the screw and cover of the jacket surface In the region of the part located between the two, the knurls are provided with ribs spaced apart from each other, in which case the knurl has a depth of at least 0.1 mm. Based on the depth of the knurl, the opening of the bottle is significantly facilitated.

  In a highly preferred variant of the invention, the closure cap has a tear-off ring, which is connected via a web to a jacket surface with threads, The neck has a first mounting surface for a portion of the tear ring that is continuous with the outer screw and located outside the bottle, in which case the first mounting surface is the first mounting surface. The second mounting surface is inclined with respect to the mounting surface and is similarly located outside the bottle. In this case, the second mounting surface is first viewed in the direction of the bottom of the bottle. The first mounting surface and a portion of the tangential plane that is in contact with the second mounting surface and facing the first mounting surface. The angle formed between the maximum is 45 °.

  An angle of at least 45 ° in the area of the tear ring makes the bottle mechanical strength much higher compared to conventional bottles, so that the bottle is driven by the high pressure generated inside the bottle when pasteurizing. Is not impaired.

  Opening the bottle at the same time as closing with high hermeticity means that the outer thread is a single thread and the depth value of the outer thread is within a value range with a lower limit of 0.5 mm and an upper limit of 0.9 mm. The nominal diameter value of the outer screw is in a value region having a lower limit of 25 mm and an upper limit of 30 mm, and the height value of the screw is in a value region having a lower limit of 9 mm and an upper limit of 15 mm, In this case, the number of threads of the outer thread is at least two, in particular between 2 and 3. The large screw depth ensures good sealing of the bottle, and the transition is relatively flat, so that the closure cap is twisted with little effort.

  The small force applied to twist the closure cap is based on a value region where the outer thread is a round thread and the value for the radius of curvature of the screw side is between 0.4 and 0.8 mm. Can be obtained.

  The consumption of the force required to open the bottle is further reduced by at least the outer screw being painted with paint, in which case the coefficient of static friction between the paint and aluminum is between aluminum and aluminum. Is smaller than the coefficient of static friction.

  According to a preferred embodiment, the cover of the closure cap can have a sealing insert. The sealing of the bottle is further enhanced by a sealing insert, which is preferably formed from plastic and can be injection molded, for example, into a closure cap.

  In order to facilitate understanding of the present invention, the present invention will be described in detail with reference to the following drawings. The figure is shown schematically in a simplified manner.

It is sectional drawing which removes the closure cap and shows the bottle which concerns on this invention. FIG. 2 is a perspective view showing a closure cap for the bottle according to FIG. 1. It is a perspective view which shows a closure cap in a bare state. Fig. 2 shows in more detail the contour of the bottle neck according to Fig. 1;

  Although initially recorded, in the embodiments described differently, the same parts are provided with the same reference numerals or the same component names, and the disclosure included in the entire description in that case is: According to the meaning, it can be transferred to the same part having the same reference number or the same part name. Also, position descriptions, such as up, down, side, etc., selected in the description are directly related to the figure shown and shown, and these position descriptions are in the event of a change in position. It is moved to a new position according to the meaning.

  All the descriptions of the value area in the specific description include both the arbitrary partial area and all the partial areas. For example, the descriptions 1 to 10 are all starting from the lower limit 1 and the upper limit 10 Subregions, i.e. all parts starting with 1 or more of the lower limit and ending with 10 or less of the upper limit, for example 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10 Territory together.

  It should be pointed out here that the figures are comprehensively described below.

  According to FIG. 1, a bottle 1 according to the invention has a bottle body 2 made of a light metal, in particular aluminum or an aluminum alloy. The bottle body 2 can be coated, e.g. painted, on the outside and / or all inside, or partially. The bottle body 2 has a neck 3, and an external screw 4 is carved on the neck.

  The outer screw 4 is preferably a single screw. In that case, the depth of the external screw 4 is preferably between 0.5 mm and 0.9 mm. The nominal diameter of the outer screw can be, for example, between 25 mm and 30 mm. According to the illustrated embodiment, the screw can have a height in the range between 9 mm and 15 mm. The number of threads of the outer screw 4 is at least two, in particular between 2 and 3. Particularly preferably, the number of threads of the outer screw 4 is based on the region 2.2-2.5. The external screw 4 can be formed as a round screw, in which case the radius of curvature of the screw side is preferably between 0.4 mm and 0.8 mm.

  The outer screw 4 can be coated with a paint that reduces friction, in which case the static coefficient of friction between the paint and aluminum is smaller than the static coefficient of friction between aluminum and aluminum.

  The bottle 1 likewise has a sleeve-shaped closure cap 5 shown in detail in FIGS. The closure cap 5 has a cover 6 and a jacket surface 7, and a screw 8 corresponding to the external screw 4 is engraved in the jacket surface, so that the closure cap 5 is removed from the neck 3 by turning. And can be closed again by turning. FIG. 3 shows the closure cap 5 in its raw state. The closure cap 5 shown in FIG. 3 is placed on the bottle 1 after it has been filled to close the bottle 1, in which case the jacket surface 7 is located on the external thread 4 of the bottle neck 3. Subsequently, the contour of the external screw 4 is imprinted into the jacket surface 7 in a manner known per se, for example by means of a tool not shown here. Thereby, the closure cap 5 is coupled to the bottle 1. Subsequently, the bottle 1 can be opened again by closing the closure cap 5.

  In order to reduce the friction, paint can be applied to the inside of the jacket surface 7 of the closure cap 5, in which case the coefficient of static friction between the paint and aluminum is greater than the coefficient of static friction between aluminum and aluminum. Is also small.

  Of course, both the inside of the closure cap 5 and the external screw 4 can be painted. In this case, it is effective if the coefficient of static friction between the two paints is smaller than the coefficient of static friction between aluminum and aluminum.

  In order to improve handling and make it easier to open the bottle 1, the outer surface of the closure cap 5 can also be painted, in which case the coefficient of static friction between the human skin and the mat paint is aluminum and It is larger than the coefficient of static friction between human skin. A so-called “Soft-Touch-Lack” can be used as the coating for the outer surface of the closure cap 5.

  It should be pointed out here that the static coefficient of friction data in this document concerning the coefficient of static friction between aluminum and aluminum is that other light metals are used as the material for bottle 1 or closure cap 5, Regardless of the general criterion in terms of quantitative values. In other words, the coefficient of static friction between aluminum in this context means a value of 1.05.

  The closure cap 5 can be formed closed except for an opening for accommodating the neck 3 of the bottle 1. A knurl 16 surrounding the ribs spaced from each other can be arranged in a portion of the jacket surface 7 located between the screw 8 and the cover 6. The knurl 16 has a depth of at least 0.1 mm.

  As is apparent from FIG. 3, the cover 6 can have a groove 18 with a U-shaped cross section. The groove 18 can circulate along a closed curve, in particular along a circle, and can be provided, for example, in the seal insert piece 16, which seal insert piece is formed from plastic, for example a closure. It can be injection molded into the cap 5. However, since the groove 18 is not always necessary, for example, the groove 18 may be omitted, and the seal insertion piece 16 may be formed without the groove 18 at all.

  An edge 9 of the neck 3 of the bottle 1 is formed by a folded portion 10 of the neck 3, and this portion has a shape of a raised portion that goes around the opening of the bottle body 2. As is apparent from the representation of FIG. 1, the edge 9 of the bottle 1 can have a substantially O-shaped cross section. The free edge of the folded portion 10 faces the outer surface of the bottle 1. However, in principle, it is also possible to fold the edge 9 inward. In this case, the free end portion of the folded portion 10 faces the inner surface of the bottle 1. The edge 9 is curved and formed in the region of the top 11 facing the cover 6.

  As can be seen from FIG. 3, the closure cap 5 can have a tear ring 12, which is connected to the jacket surface 7 via a web 19. At the same time, the neck 3 of the bottle 1 has a first mounting surface 13 for the part of the tear-off ring 12 which is continuous with the external screw 4 and located outside the bottle 1, as shown in FIGS. Can have. In that case, the 1st mounting surface 12 has changed to the 2nd mounting surface 14 arrange | positioned on the outer side of the bottle 1 similarly. The second placement surface 14 is inclined with respect to the first placement surface 13. When viewed from the direction of the first placement surface 13, the second placement surface 14 is inclined in the direction of the longitudinal center plane e of the bottle 1. As is clear from FIG. 4, the angle α formed between the first placement surface 13 and the portion of the tangential plane t that contacts the second placement surface 14 that faces the first placement surface 13. Is at most 45 °.

  Finally, as pointed out formally, in order to facilitate understanding of the structure of the bottle according to the present invention, the bottle or its components are not partially scaled and / or enlarged and / or reduced. It is shown.

DESCRIPTION OF SYMBOLS 1 Bottle 2 Bottle main body 3 Neck 4 External screw 5 Closure cap 6 Cover 7 Jacket surface 8 Screw 9 Edge 10 Part 11 Top part 12 Tear-off ring 13 Placement surface 14 Placement surface 15 Seal insertion piece 16 Knurl 17 Web 18 Groove e Longitudinal center plane t Tangent plane α Angle

Claims (12)

A bottle (1) having a bottle body (2) made of light metal and a neck (3) having an external screw (4), the bottle (1) closing an opening of the bottle (1) A cover (6) and a jacket surface (7) having a screw (8) corresponding to the outer screw (4) of the neck (3) in a state of being continuous with the cover (6) and the bottle being closed In a bottle comprising a sleeve-shaped closure cap (5) with:
The folded portion (10) of the neck (3), wherein the edge (9) of the neck (3) of the bottle (1) forms a raised portion that goes around the opening of the bottle body (2). The free end of the folded portion (10) faces the outer or inner surface of the bottle (1), and the folded portion (10) is the edge (9). In the region of the top (11) facing the cover (6), and the edge (9) of the bottle (1) has a substantially O-shaped cross section. A bottle characterized by that.   2. Bottle according to claim 1, characterized in that the closure cap (5) has a base body (12) made of light metal.   Bottle according to claim 2, characterized in that the bottle body (2) and / or the base body (12) of the closure cap (5) are made of aluminum or an aluminum alloy.   The inside of the jacket surface (7) of the closure cap (5) is coated with paint, and the coefficient of static friction between the paint and aluminum is smaller than the coefficient of static friction between aluminum and aluminum. The bottle according to any one of claims 1 to 3, characterized in that:   The outer surface of the closure cap (5) is coated with paint, and the coefficient of static friction between the human skin and the mat paint is larger than the coefficient of static friction between the aluminum and the human skin. The bottle according to any one of claims 1 to 4.   The closure cap (5) is formed closed except for an opening for accommodating the neck (3) of the bottle (1), and the jacket surface (7) of the closure cap (5) A knurl (16) having ribs spaced from each other in a portion of the jacket surface (7) located between the screw (8) and the cover (6). The bottle according to claim 1, which has a depth of 0.1 mm.   The closure cap (5) has a tear ring (12), which is connected via a web (19) to a jacket surface (7) with the screw (8), The first mounting surface (1) for the part of the tear ring (12) in which the neck (3) of 1) is continuous with the external screw (4) and is located outside the bottle (1) 13), and the first placement surface (13) is inclined with respect to the first placement surface (13) and is similarly located outside the bottle. The second placement surface is seen from the first placement surface (13) toward the bottom of the bottle (1), and the length of the bottle (1) It is inclined in the direction of the central plane (e) and is in contact with the first placement surface (13) and the second placement surface (14). The angle (α) formed between the line plane (t) and the portion facing the first placement surface (13) is 45 ° at the maximum. The bottle according to any one of the above.   The external screw (4) is a single thread, and the depth value of the external screw (4) is in a value region where 0.5 mm is the lower limit and 0.9 mm is the upper limit, The nominal diameter value of the screw (4) is in the value region where the lower limit is 25 mm and the upper limit is 30 mm, and the height value of the screw is within the value region where the lower limit is 9 mm and the upper limit is 15 mm. The bottle according to any one of claims 1 to 7, characterized in that the number of threads of the outer screw is at least 2, in particular between 2 and 3.   The external screw (4) is a round screw, and the value of the curvature radius of the screw side is based on a value region between 0.4 mm and 0.8 mm. The bottle according to any one item.   10. The outer screw (4) is coated with a paint, and a coefficient of static friction between the paint and aluminum is smaller than a coefficient of static friction between aluminum and aluminum. The bottle according to any one of the above.   11. Bottle according to any one of the preceding claims, characterized in that the cover (6) of the closure cap (5) has a sealing insert (16).   12. Bottle according to claim 11, characterized in that the sealing insert (16) is made of plastic.

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