CA2086836A1 - Closure for a bottle or the like and process for manufacturing it - Google Patents
Closure for a bottle or the like and process for manufacturing itInfo
- Publication number
- CA2086836A1 CA2086836A1 CA002086836A CA2086836A CA2086836A1 CA 2086836 A1 CA2086836 A1 CA 2086836A1 CA 002086836 A CA002086836 A CA 002086836A CA 2086836 A CA2086836 A CA 2086836A CA 2086836 A1 CA2086836 A1 CA 2086836A1
- Authority
- CA
- Canada
- Prior art keywords
- sealing
- bottle
- closure
- accordance
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
- B21D51/44—Making closures, e.g. caps
- B21D51/50—Making screw caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
- B65D41/045—Discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
- B65D51/1661—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of a passage for the escape of gas between the closure and the lip of the container mouth
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Closing Of Containers (AREA)
- Glass Compositions (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
Abstract
The invention discloses a closure for a bottle or the like and process for manufacturing it. The closure consists of a retaining part (1) which retains the closure on the bottle neck, a sealing part (2) which is retained by the retaining part and has a substantially annular sealing surface (7), a seal (10) made of compressible material being arranged between the latter and the annular face of the bottle neck. The contact pressure between the seal and the annular sealing surface varies along the latter. The areas of higher contact pressure act as a limit stop and define the position of the sealing part and thus the magnitude of the compression of the areas (8) of lower contact pressure which form the pressure-relief valve. Sealing, limit stop and elastic element can therefore be made very easily by simply fashioning the annular sealing surface or the seal itself.
Description
_ _ _ A 8EALI~G CL08URE FOR A BOTTLE OR T~E LIRE, AS WELL AS A PROCE88 FOR T~E MaN~FACT~RE OF T~E 8AME.
., , The invention relates to a sealing closure of the type stated in the introductory portion of claim 1, for a bottle or the like, as well as to a process for the manu~acture of the same.
A sealing closure is already known, from th- German patent number DE-PS 36 42 998, in which, in addition to the radial, frontal sealing surface, axial sealing surfaces, into which the sealing - mass of the sealing extends, are also provided in the area of the edge of the aperture of a bottle. The sealing part is deep-drawn, and extends around the edge of the aperture of the bottle, in order to thereby form the external, axial sealing surface. The essential point of this known sealing closure consists of the fact that the sealing part is, in at least one partial area -- that is to say, at the point of the transition from the sealing part to the support part -- not deep-drawn up to the lateral edge of the aperture of the neck of the bottle, but is, rather, removed out from the said deformation. In this manner, an impeded sealing section should be created in the non-deformed portion, which section should., because of its shortness, lead to a low level of tightness. In this manner, the escape of excess pressure is favored. The escape of the excess pressure is, in such a type of sealing closure, however, less dependent on the sealing section than it is on the support .' ' . . ..
2086~3~
pressure of the sealing. In this known sealing closure, however, this is uniform over the entire edge of the aperture. The desired effect of an excess pressure valve is thus only attained to a very incomplete degree.
A sealing closure for a bottle or the like is also already known, from the German patent number DE-PS 37 44 292, which has a cap-shaped support part, on which a projection or collar, which is directed inwardly in order to provlde for the engagement of an external bulge of the neck of the bottle, is positioned. This sup-port part is connected, by means of an elastic element, with a sealing part, which has a ring-shaped sealing surface for the fit-ting of the frontal surface of the neck of the bottle. The support part has a catch unit for the defined contact fitting of the sup-port part with the edge of the neck of the bottle. Since the seal-ing part likewise abuts with the edge of the neck of the bottle, the reciprocal position of the support part and the sealing part is thereby precisely defined. Since the elastic element for the pre-stressing of the sealing part is located between these two units, the degree of the prestressing of the elastic element is thereby also precisely defined and, thereby, the pressure at which the sealing part rises up and, therefore, opens the excess pressure valve.
.
., , The invention relates to a sealing closure of the type stated in the introductory portion of claim 1, for a bottle or the like, as well as to a process for the manu~acture of the same.
A sealing closure is already known, from th- German patent number DE-PS 36 42 998, in which, in addition to the radial, frontal sealing surface, axial sealing surfaces, into which the sealing - mass of the sealing extends, are also provided in the area of the edge of the aperture of a bottle. The sealing part is deep-drawn, and extends around the edge of the aperture of the bottle, in order to thereby form the external, axial sealing surface. The essential point of this known sealing closure consists of the fact that the sealing part is, in at least one partial area -- that is to say, at the point of the transition from the sealing part to the support part -- not deep-drawn up to the lateral edge of the aperture of the neck of the bottle, but is, rather, removed out from the said deformation. In this manner, an impeded sealing section should be created in the non-deformed portion, which section should., because of its shortness, lead to a low level of tightness. In this manner, the escape of excess pressure is favored. The escape of the excess pressure is, in such a type of sealing closure, however, less dependent on the sealing section than it is on the support .' ' . . ..
2086~3~
pressure of the sealing. In this known sealing closure, however, this is uniform over the entire edge of the aperture. The desired effect of an excess pressure valve is thus only attained to a very incomplete degree.
A sealing closure for a bottle or the like is also already known, from the German patent number DE-PS 37 44 292, which has a cap-shaped support part, on which a projection or collar, which is directed inwardly in order to provlde for the engagement of an external bulge of the neck of the bottle, is positioned. This sup-port part is connected, by means of an elastic element, with a sealing part, which has a ring-shaped sealing surface for the fit-ting of the frontal surface of the neck of the bottle. The support part has a catch unit for the defined contact fitting of the sup-port part with the edge of the neck of the bottle. Since the seal-ing part likewise abuts with the edge of the neck of the bottle, the reciprocal position of the support part and the sealing part is thereby precisely defined. Since the elastic element for the pre-stressing of the sealing part is located between these two units, the degree of the prestressing of the elastic element is thereby also precisely defined and, thereby, the pressure at which the sealing part rises up and, therefore, opens the excess pressure valve.
.
A screw sealing closure of the type which is stated in the intro-ductory portion of claim 1 is already known from the US patent number 40 89 434, in which a sealing of foam material, which has different thicknesses in its cross-section in diametrical direct-ions, is positioned between the base of the screw cap and the frontal edge of the neck of the bottle. When the cap is screwed on, therefore, the areas of greater thickness are compressed more intensely than the areas of smaller thickness. In the areas of lesser thickness, the sealing force is, therefore, lower, and these areas are intended to serve as an excess pressure valve. The opening pressure hereby depends on the compression of the entire sealing, and is consequently not independent of the torque of the screwing. If the screwing on of the cap is carried out with too little torque, the areas of slighter thickness are not brought to contact fitting, and the sealing is not tight. If the sealing is screwed on with a force which is too great, then the contact force is also too great in the area of the slighter thickness, so that the opening pressure is correspondingly also great, which entails the danger of the explosion of the bottle. There is also the specific disadvantage that the greater portion of the torque is, when the cap is screwed on, eliminated when the areas of the seal-ing which have the greater thickness are compressed, and their sur-face is, at the same time, significantly greater than the surface of the areas of lesser thickness, so that the increased rise in the torque can scarcely be determined because of the additional com-pression in the area of the points of lesser thickness of the seal-- ' - . ~ -~' ~
ing, particularly if the cap is screwed on by hand. The screwing on of the cap by hand is, however, the normal case under practical conditions, and this is decisive. The danger of an explosion therefore additionally exists in the normal case.
A pressure release sealing for a sealing closure which is similar to the US patent number 4 089 434 discussed above is already known from the German patent disclosure statement number DE-OS 1 432 224, whereby the difference conslsts of the fact that the areas of smaller thickness of the sealing are only located on two short points on the circumference which are diametrically opposed to one another. The largest portion of the sealing has the greater thick-ness. The disadvantages described above are thus even greater than before.
Cap-shaped sealing closures with excess pressure safety mechanisms are already known from the US patent number 3 114 467, as well as from the German utility model number 8 122 918 O-l, in which a flat sealing disk is positioned within the base, behind which recesses are positioned at a number of points on the circumference. If sucl a cap is screwed on to the neck of a bottle, and if pressure arises within the bottle, then the edge of the disk-shaped sealing rises up slightly at those points at which the recesses within the base of the cap are located, so that excess pressure can escape. One disadvantage of these known screw sealing closures consists of the fact that, within the area of the recesses in the base of the screw : ' , ': ' ' : ' .
.
:
2086~36 Wo 92/00892 5 PCT/EP91/01283 caps, absolutely no contact pressure of the edge of the sealing disk is applied on the frontal edge of the neck of the bottle. The contents of the bottle -- such as a beverage bottle, for example --can thus escape, even with the lowest excess pressures within the bottle, which is obviously not desirable. There exists the dis-advantage, moreover, that, because of the tolerances or the contaminants on the frontal surface of the edge of the bottle or on the sealing, which are caused by manufacturing, a tight contact of the sealing with the frontal surface of the neck of the bottle is impossible, particularly in the case of gas bottles.
The task which forms the basis of the invention is that of creating a sealing closure of the type noted, which is simple in its con-struction and which, because it is thoroughly independent of the screwing-on torque, opens reliably with a predetermined excess pressure.
The task which additionally forms the basis of the invention is that of describing a process for the simple manufacture of a seal-ing closure of the type which is stated in claim 1.
The task which forms the basis of the invention is solved by means of the concept which is stated in the characterizing portion of claim l.
,',: ~ - ' , .
.
2086~3~
The invention is distinguished from the known concepts of shortening the sealing section or pressing the sealing part as a whole, by means of an elastic element, against the aperture of the neck of the bottle. It is the basic concept of the invention, rather, to create a sealing, a catch unit and an elastic element solely through the formation of the ring-shaped sealing surface or the sealing.
One possible expression of this general concept in concrete terms .... ..
is stated in claim 2. If a bottle is tightly sealed by means of a sealing closure in accordance with this concept, then it results that, within the circumference areas of the ring-shaped sealing surface which do not spring back, the sealing is supported with a great support force and thereby, in accordance with a type of a catch unit, the precise position of the sealing part is determined in relation to the frontal surface of a neck of the bottle. By this means, however, the force with which the circumference areas of the sealing abut on the frontal surface of the neck of the bottle, where the ring-shaped sealing surface rebounds, is also determined precisely. As the result, the circumference area of the sealing consequently abuts against the rebounding points of the ring-shaped sealing surface with a force on the frontal surface of the neck of the bottle which is determined by its compressibility and, since the compressibility depends on the shape, the thickness and the materials composition, and since all of these can be selected with precision, the sealing pressure on the rebounding 2~86836 wo 92/00892 7 PCT/EP91/01283 points of the ring-shaped surface can also be determined precisely and, consequently, the pressure at which the sealing rises up from the frontal edge of the neck of the bottle, and consequently allows the excess pressure to escape.
At that point where the essentially ring-shaped sealing surface of the sealing part rebounds against at least one point of the circum-ference, the sealing is, therefore, in the case of sealing closure, less sharply compressed, and thereby prestressed, so that, under .. . .. . ..
the desired excess pressures, it rises up, and excess pressure is allowed to escape. The sealing can thereby be shaped, over the circumference, in a manner which is complementary to the ring-shaped sealing surface of the sealing part, and therefore adjusted to the contour of the sealing surface. In the simplest case, this means that, in the case of a cap-shaped formation of a sealing closure in accordance with the invention in the ring-shaped sealing surface, a depression is provided in an entirely simple manner, which fills out the material of the sealing, while the support sur-face of the sealing is positioned, on the frontal surface of the neck of the bottle, in a radial plane. Such a sealing closure can, in accordance with the concept of the process claim 8, be produced in a simple manner, whereby the depressions can be produced, during the closing process, without any additional expense, whereas only the corresponding material -- such as foam material, for example --needs to be selected for the sealing, which likewise represents no additional expense.
: ~:
- ~. ' , ' In accordance with one further construction of the invention, the sealing can also be a profile sealing, particularly a lip-type sealing, whereby the profile is shaped over the circumference in a manner which is complementary to the ring-shaped sealing surface.
In accordance with another expression in concrete terms of the general concept stated in claim 1, the sealing has a constant thickness and consists, over its circumference, of materials with different compressibility. For example, the material of the seal-ing can have hollow spaces at a number of points, particularly bubbles, by means of which foam material is formed at these points by practical means. In all the forms of implementation of the invention, it is possible to provide recesses on the side of the sealing which is turned away from the sealing surface, which ensures a greater compressibility.
The material of the support and sealing part can be of any type, such as, for example, either plastic or metal. There may be a screw-type or crown-type sealing closure, or any other sealing closure which is desired.
The invention will be illustrated in further detail by means of the diagrams:
- ' ' ' ' . :: ' :
- : .. , . : . ' ' ' ' . . .
Wo 92/00892 9 pcT/Epsllol283 Figure 1: Depicts an example of implementatïon of the invention, in a cross-section;
Figure 2: Is a view from above, the top of Figure l;
Figure 3: Is a lateral view of Figure 1;
Figure 4: Clarifies the process in accordance with the invention;
Figure 5: Depicts an intermediary step in the pro-cess in accordance with the invention;
Figure 6: Depicts the end stage of the process;
Figure 7: Depicts another form of implementation of the basic concept of the invention in a ¦ depiction similar to Figure 1; and:
Figure 8: Depicts a view from above of the sealing in Figure 7.
.''~
In Figures 1 to 3, a support part (1) and a sealing part (2) together form a screw cap, for which threads (3) are provided within the support part (1), by means of which threads the support part (1) can be screwed onto the bulge-shaped threads (4) of a neck (5) of a bottle (6) which is only depicted partially. The support part (1) and the sealing part (2) are deep-drawn or pressed out of aluminum, as is generally conventional in such types of screw sealing closures.
... . .
..
' 20~6836 The sealing part (2) has, in its edge area, a ring-shaped sealing surface (7), which rebounds at three points (8), and thus has a greater distance to the frontal surface (9) of the neck of the bottle (5) than the ring-shaped sealing surface (7).
Between the ring-shaped sealing surface (7) or its rebounding points (8) and the frontal surface (9) of the neck of the bottle (5), there is placed a sealing (10), the sealing surface (11) of which lies in a radial plane, in relation to the neck of the bottle (5), while its sealing surface (12) positioned on the other side is constructed in a manner which is complementary to the ring-shaped sealing surface (7) or its rebounding points (8). The sealing (10) consists of material which can be compressed in volume, such as, for example, of foam material.
Figure 1 depicts the sealing closure, which is constructed as a screw cap, in the screwed-on condition. During the screwing on, contact forces, which mount very rapidly, and which act in a seal-ing manner, and simultaneously impede a further screwing on of the screw cap, so that this has a precisely defined position in relat-ion to the frontal surface (9) of the neck of the bottle (5?, occur in the area of the thinner circumference parts of the sealing (10), in the area of the ring-shaped sealing surface (7).
' ' . ,~ . .
20~836 During the screwing on, the sealing (10) is compressed, in the area of the rebounding points (8), by the same distance, but there result, however, because of the thickness of the sealing (10) which is greater at that point, lesser support forces on the frontal surface (9) of the neck of the bottle (5), in a proportion which is inverse to the thickness. With increasing pressure in the bottle, the material of the sealing (10) consequently compresses in the area of the rebounding points (8), so that excess pressure can escape. The pressure at whlch the excess pressure escapes is essentially determined through the thickness of the sealing in the area of the rebounding points (8) and the compressibility in this area.
Figures 4 to 6 illustrate different process steps in the implement-ation of the process in accordance with the invention for the manu-facture of a sealing closure in accordance with the invention.
First, a sealing disk (18), which is smooth, is inserted into a cap-shaped sealing closure, consisting of a support part (16) and sealing part (17), which is likewise smooth. Everything is then placed together, in the direction of an arrow (19), onto the end of a neck of the bottle (20), as is depicted in Figure 6. After that, a stamp unit (21) is pressed, in the direction of an arrow (22), against the sealing part (17). Within the stamp unit (21), there is provided a depression (23), from which a projection (24) pro-trudes which, upon the pressing of the stamp unit (21), presses into the sealing part (17) and produces depressions there, at .
20~683~
Wo 92/00892 12 PCT/EP91/01283 points which are at a distant from one another, as can be seen from Figure 6. These depressions represent, in the interior of the sealing closure cap, projections (25) which, since their surface expansion is relatively slight, compress the sealing disk (18) very greatly, so that the projections (25) practically form a catch unit, which guarantees a precise placement of the sealing closure cap in relation to the frontal edge of the neck of the bottle (20), and thereby also the pressing of the sealing disk (18) into the circumference areas (26). This specific compression into the areas .. . . .
(26), which can be reproduced by means of the catch units (26), determines a precisely defined pressure at which excess pressure can escape.
In the position depicted in Figure 6, a threading (27), as well as a collar (28), are produced, by means which are not depicted here, by pressing from the outside against the support part (16), which serves to make the first opening of the bottle visible.
Figure 7 depicts, in a manner similar to Figure 1, a section through the upper portion of a neck of the bottle; identical or corresponding parts are provided with the same reference numbers.
The difference from the form of implementation in accordance with Figure 1 consists of the fact that a sealing part (26) is con-structed in a completely developed manner whereas, at the same time, a sealing (27) has the same cross-section. This sealing, as is evident from the view from above of the sealing in Figure 8, 20g6836 has, however, three areas (28, 29 and 30), which have a compressi-bility which is slighter -- and, preferably, substantially slighter -- than that of the central area (31). These areas (28, 29 and 30) act, therefore, as catch units, and determine the compression of the central area (31) of the sealing (27) within the area of the sealing surface. At these points, the material of the sealing can thus, with a specific excess pressure, rise up from the sealing support, and consequently allow the excess pressure to escape.
.
-
A pressure release sealing for a sealing closure which is similar to the US patent number 4 089 434 discussed above is already known from the German patent disclosure statement number DE-OS 1 432 224, whereby the difference conslsts of the fact that the areas of smaller thickness of the sealing are only located on two short points on the circumference which are diametrically opposed to one another. The largest portion of the sealing has the greater thick-ness. The disadvantages described above are thus even greater than before.
Cap-shaped sealing closures with excess pressure safety mechanisms are already known from the US patent number 3 114 467, as well as from the German utility model number 8 122 918 O-l, in which a flat sealing disk is positioned within the base, behind which recesses are positioned at a number of points on the circumference. If sucl a cap is screwed on to the neck of a bottle, and if pressure arises within the bottle, then the edge of the disk-shaped sealing rises up slightly at those points at which the recesses within the base of the cap are located, so that excess pressure can escape. One disadvantage of these known screw sealing closures consists of the fact that, within the area of the recesses in the base of the screw : ' , ': ' ' : ' .
.
:
2086~36 Wo 92/00892 5 PCT/EP91/01283 caps, absolutely no contact pressure of the edge of the sealing disk is applied on the frontal edge of the neck of the bottle. The contents of the bottle -- such as a beverage bottle, for example --can thus escape, even with the lowest excess pressures within the bottle, which is obviously not desirable. There exists the dis-advantage, moreover, that, because of the tolerances or the contaminants on the frontal surface of the edge of the bottle or on the sealing, which are caused by manufacturing, a tight contact of the sealing with the frontal surface of the neck of the bottle is impossible, particularly in the case of gas bottles.
The task which forms the basis of the invention is that of creating a sealing closure of the type noted, which is simple in its con-struction and which, because it is thoroughly independent of the screwing-on torque, opens reliably with a predetermined excess pressure.
The task which additionally forms the basis of the invention is that of describing a process for the simple manufacture of a seal-ing closure of the type which is stated in claim 1.
The task which forms the basis of the invention is solved by means of the concept which is stated in the characterizing portion of claim l.
,',: ~ - ' , .
.
2086~3~
The invention is distinguished from the known concepts of shortening the sealing section or pressing the sealing part as a whole, by means of an elastic element, against the aperture of the neck of the bottle. It is the basic concept of the invention, rather, to create a sealing, a catch unit and an elastic element solely through the formation of the ring-shaped sealing surface or the sealing.
One possible expression of this general concept in concrete terms .... ..
is stated in claim 2. If a bottle is tightly sealed by means of a sealing closure in accordance with this concept, then it results that, within the circumference areas of the ring-shaped sealing surface which do not spring back, the sealing is supported with a great support force and thereby, in accordance with a type of a catch unit, the precise position of the sealing part is determined in relation to the frontal surface of a neck of the bottle. By this means, however, the force with which the circumference areas of the sealing abut on the frontal surface of the neck of the bottle, where the ring-shaped sealing surface rebounds, is also determined precisely. As the result, the circumference area of the sealing consequently abuts against the rebounding points of the ring-shaped sealing surface with a force on the frontal surface of the neck of the bottle which is determined by its compressibility and, since the compressibility depends on the shape, the thickness and the materials composition, and since all of these can be selected with precision, the sealing pressure on the rebounding 2~86836 wo 92/00892 7 PCT/EP91/01283 points of the ring-shaped surface can also be determined precisely and, consequently, the pressure at which the sealing rises up from the frontal edge of the neck of the bottle, and consequently allows the excess pressure to escape.
At that point where the essentially ring-shaped sealing surface of the sealing part rebounds against at least one point of the circum-ference, the sealing is, therefore, in the case of sealing closure, less sharply compressed, and thereby prestressed, so that, under .. . .. . ..
the desired excess pressures, it rises up, and excess pressure is allowed to escape. The sealing can thereby be shaped, over the circumference, in a manner which is complementary to the ring-shaped sealing surface of the sealing part, and therefore adjusted to the contour of the sealing surface. In the simplest case, this means that, in the case of a cap-shaped formation of a sealing closure in accordance with the invention in the ring-shaped sealing surface, a depression is provided in an entirely simple manner, which fills out the material of the sealing, while the support sur-face of the sealing is positioned, on the frontal surface of the neck of the bottle, in a radial plane. Such a sealing closure can, in accordance with the concept of the process claim 8, be produced in a simple manner, whereby the depressions can be produced, during the closing process, without any additional expense, whereas only the corresponding material -- such as foam material, for example --needs to be selected for the sealing, which likewise represents no additional expense.
: ~:
- ~. ' , ' In accordance with one further construction of the invention, the sealing can also be a profile sealing, particularly a lip-type sealing, whereby the profile is shaped over the circumference in a manner which is complementary to the ring-shaped sealing surface.
In accordance with another expression in concrete terms of the general concept stated in claim 1, the sealing has a constant thickness and consists, over its circumference, of materials with different compressibility. For example, the material of the seal-ing can have hollow spaces at a number of points, particularly bubbles, by means of which foam material is formed at these points by practical means. In all the forms of implementation of the invention, it is possible to provide recesses on the side of the sealing which is turned away from the sealing surface, which ensures a greater compressibility.
The material of the support and sealing part can be of any type, such as, for example, either plastic or metal. There may be a screw-type or crown-type sealing closure, or any other sealing closure which is desired.
The invention will be illustrated in further detail by means of the diagrams:
- ' ' ' ' . :: ' :
- : .. , . : . ' ' ' ' . . .
Wo 92/00892 9 pcT/Epsllol283 Figure 1: Depicts an example of implementatïon of the invention, in a cross-section;
Figure 2: Is a view from above, the top of Figure l;
Figure 3: Is a lateral view of Figure 1;
Figure 4: Clarifies the process in accordance with the invention;
Figure 5: Depicts an intermediary step in the pro-cess in accordance with the invention;
Figure 6: Depicts the end stage of the process;
Figure 7: Depicts another form of implementation of the basic concept of the invention in a ¦ depiction similar to Figure 1; and:
Figure 8: Depicts a view from above of the sealing in Figure 7.
.''~
In Figures 1 to 3, a support part (1) and a sealing part (2) together form a screw cap, for which threads (3) are provided within the support part (1), by means of which threads the support part (1) can be screwed onto the bulge-shaped threads (4) of a neck (5) of a bottle (6) which is only depicted partially. The support part (1) and the sealing part (2) are deep-drawn or pressed out of aluminum, as is generally conventional in such types of screw sealing closures.
... . .
..
' 20~6836 The sealing part (2) has, in its edge area, a ring-shaped sealing surface (7), which rebounds at three points (8), and thus has a greater distance to the frontal surface (9) of the neck of the bottle (5) than the ring-shaped sealing surface (7).
Between the ring-shaped sealing surface (7) or its rebounding points (8) and the frontal surface (9) of the neck of the bottle (5), there is placed a sealing (10), the sealing surface (11) of which lies in a radial plane, in relation to the neck of the bottle (5), while its sealing surface (12) positioned on the other side is constructed in a manner which is complementary to the ring-shaped sealing surface (7) or its rebounding points (8). The sealing (10) consists of material which can be compressed in volume, such as, for example, of foam material.
Figure 1 depicts the sealing closure, which is constructed as a screw cap, in the screwed-on condition. During the screwing on, contact forces, which mount very rapidly, and which act in a seal-ing manner, and simultaneously impede a further screwing on of the screw cap, so that this has a precisely defined position in relat-ion to the frontal surface (9) of the neck of the bottle (5?, occur in the area of the thinner circumference parts of the sealing (10), in the area of the ring-shaped sealing surface (7).
' ' . ,~ . .
20~836 During the screwing on, the sealing (10) is compressed, in the area of the rebounding points (8), by the same distance, but there result, however, because of the thickness of the sealing (10) which is greater at that point, lesser support forces on the frontal surface (9) of the neck of the bottle (5), in a proportion which is inverse to the thickness. With increasing pressure in the bottle, the material of the sealing (10) consequently compresses in the area of the rebounding points (8), so that excess pressure can escape. The pressure at whlch the excess pressure escapes is essentially determined through the thickness of the sealing in the area of the rebounding points (8) and the compressibility in this area.
Figures 4 to 6 illustrate different process steps in the implement-ation of the process in accordance with the invention for the manu-facture of a sealing closure in accordance with the invention.
First, a sealing disk (18), which is smooth, is inserted into a cap-shaped sealing closure, consisting of a support part (16) and sealing part (17), which is likewise smooth. Everything is then placed together, in the direction of an arrow (19), onto the end of a neck of the bottle (20), as is depicted in Figure 6. After that, a stamp unit (21) is pressed, in the direction of an arrow (22), against the sealing part (17). Within the stamp unit (21), there is provided a depression (23), from which a projection (24) pro-trudes which, upon the pressing of the stamp unit (21), presses into the sealing part (17) and produces depressions there, at .
20~683~
Wo 92/00892 12 PCT/EP91/01283 points which are at a distant from one another, as can be seen from Figure 6. These depressions represent, in the interior of the sealing closure cap, projections (25) which, since their surface expansion is relatively slight, compress the sealing disk (18) very greatly, so that the projections (25) practically form a catch unit, which guarantees a precise placement of the sealing closure cap in relation to the frontal edge of the neck of the bottle (20), and thereby also the pressing of the sealing disk (18) into the circumference areas (26). This specific compression into the areas .. . . .
(26), which can be reproduced by means of the catch units (26), determines a precisely defined pressure at which excess pressure can escape.
In the position depicted in Figure 6, a threading (27), as well as a collar (28), are produced, by means which are not depicted here, by pressing from the outside against the support part (16), which serves to make the first opening of the bottle visible.
Figure 7 depicts, in a manner similar to Figure 1, a section through the upper portion of a neck of the bottle; identical or corresponding parts are provided with the same reference numbers.
The difference from the form of implementation in accordance with Figure 1 consists of the fact that a sealing part (26) is con-structed in a completely developed manner whereas, at the same time, a sealing (27) has the same cross-section. This sealing, as is evident from the view from above of the sealing in Figure 8, 20g6836 has, however, three areas (28, 29 and 30), which have a compressi-bility which is slighter -- and, preferably, substantially slighter -- than that of the central area (31). These areas (28, 29 and 30) act, therefore, as catch units, and determine the compression of the central area (31) of the sealing (27) within the area of the sealing surface. At these points, the material of the sealing can thus, with a specific excess pressure, rise up from the sealing support, and consequently allow the excess pressure to escape.
.
-
Claims (11)
1) A sealing closure for a bottle or the like, with a support part, which has a projection or collar directed inwardly, for the engagement of an external bulge of a neck of the bottle, with a sealing part connected with the support part, which sealing part has an essentially ring-shaped sealing surface, and with a sealing of compressible material positioned between the ring-shaped sealing surfaces and the ring-shaped frontal surface of the neck of the bottle and, in the closed condit-ion, abut both with the sealing surface of the sealing part, as well as also with the frontal surface of the neck of the bottle, characterized in that, the sealing is abuts, with differing contact pressures, along the ring-shaped sealing surface.
2) A sealing closure in accordance with claim 1, characterized in that, for the production of the different contact pressures, the sealing surface (7) of the sealing part (2), which is essentially ring-shaped, rebounds, on at least one point (8) of the circumference, in the axial direction, and that the sealing (10) is so dimensioned in the cross-section that the contact pressure of the sealing on the rebounding point, or on the rebounding points, is less than on the non-rebounding points.
3) A sealing closure in accordance with claim 2, characterized in that, the segment of the rebounding points in the direction of circumference is smaller, preferably significantly smaller, than the segment of the non-rebounding points.
4) A sealing closure in accordance with claim 2, characterized in that, the sealing (10) is formed over the circumference in a manner which is complementary to the ring-shaped sealing sur-face (7) of the sealing part (2).
5) A sealing closure in accordance with claim 2, characterized in that, the sealing (10) consists of a material which can be compressed in its volume.
6) A sealing closure in accordance with claim 3, characterized in that, the sealing (10) consists of foam material.
7) A sealing closure in accordance with claim 1, characterized in that, the sealing has, for the production of the different contact pressure, a constant thickness, and consists, over its circumference, of materials with different levels of compress-ibility.
8) A sealing closure in accordance with claim 1, 2 or 7, charac-terized in that, the different compressibility is created by means of hollow spaces or recesses on the side of the sealing which is turned away from the sealing surface.
9) Process for manufacturing a sealing closure in accordance with claim 2, in which the essentially ring-shaped sealing surface of the sealing part rebounds, in the axial direction, on at least one point on the circumference, characterized in that, a sealing disk or a sealing ring of constant thickness and of a compressible material, particularly of foam material, is inserted into a cap which forms a support part and a sealing part, with a smooth sealing surface on the sealing part, and which is of a deformable material, particularly aluminum;
that, the cap is placed on the neck of a bottle; that, a press stamp die is pressed against the sealing part of the cap from the outside which has, on its frontal surface, project-ions positioned at a distance from one another in the circum-ferential direction, so that the sealing part is only deformed at the points of these projections, in the direction to the frontal surface of the neck of the bottle, so that the non-deformed parts form the rebounding parts of the ring-shaped sealing surface, on which the sealing is compressed to a slight extent.
that, the cap is placed on the neck of a bottle; that, a press stamp die is pressed against the sealing part of the cap from the outside which has, on its frontal surface, project-ions positioned at a distance from one another in the circum-ferential direction, so that the sealing part is only deformed at the points of these projections, in the direction to the frontal surface of the neck of the bottle, so that the non-deformed parts form the rebounding parts of the ring-shaped sealing surface, on which the sealing is compressed to a slight extent.
10) Process in accordance with claim 9, characterized in that, when the stamp unit is pressed in, a collar for the engage-ment of the external bulge of the neck of the bottle is pro-duced.
11) Process in accordance with claim 9, characterized in that, a screw cap is used as the cap; that, the screw cap is screwed on; and that, the stamp unit is abutted in the screwed-on position, and the deformations in the sealing part are pro-duced.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4022196 | 1990-07-12 | ||
| DEP4022196.2 | 1990-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2086836A1 true CA2086836A1 (en) | 1992-01-13 |
Family
ID=6410150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002086836A Abandoned CA2086836A1 (en) | 1990-07-12 | 1991-07-10 | Closure for a bottle or the like and process for manufacturing it |
Country Status (8)
| Country | Link |
|---|---|
| EP (2) | EP0620164B1 (en) |
| AT (2) | ATE140908T1 (en) |
| CA (1) | CA2086836A1 (en) |
| DE (4) | DE9108494U1 (en) |
| DK (2) | DK0537246T3 (en) |
| ES (2) | ES2068596T3 (en) |
| GR (2) | GR3015549T3 (en) |
| WO (1) | WO1992000892A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0650445A4 (en) * | 1992-07-18 | 1996-05-01 | Procter & Gamble | Venting and dispensing cap for a container. |
| DE4226935A1 (en) * | 1992-08-14 | 1994-02-17 | Berolina Kunststoff | Closure cap with elastic seal and safety pressure release - has indentation in inner bearing face of cap connecting with outside air and taking up seal section when pressure in container is too strong. |
| DE4234010A1 (en) * | 1992-10-09 | 1994-04-14 | Hertrampf Michael | Closure for a bottle or the like |
| KR100838602B1 (en) * | 2007-04-06 | 2008-06-16 | 인중종합건설(주) | A method of construction to pour concrete of scrapped water pipes for being replaced the water pipes become superannuated |
| US9296033B2 (en) | 2009-05-26 | 2016-03-29 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Embossing method and apparatus |
| IT1394418B1 (en) * | 2009-05-26 | 2012-06-15 | Sacmi | METHOD AND EMBOSSING EQUIPMENT |
| EP2279809A1 (en) * | 2009-07-31 | 2011-02-02 | Tecnocap S.p.A. | Cap and process for forming the same |
| EP3045434A1 (en) | 2015-01-15 | 2016-07-20 | Vetropack Holding AG | Bottle closure mouth with ventilation access |
| DE102020107420A1 (en) | 2020-03-18 | 2021-09-23 | Grohe Ag | Device with an opening that can be closed by a cover |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2032931A (en) * | 1932-04-09 | 1936-03-03 | Anchor Cap & Closure Corp | Closure cap and package |
| FR851275A (en) * | 1938-09-10 | 1940-01-05 | Catonnet A | Improvements to sealing capsules |
| US2514124A (en) * | 1947-11-20 | 1950-07-04 | Gutmann & Co Ferd | Receptacle closure |
| US2542741A (en) * | 1949-03-26 | 1951-02-20 | Armstrong Cork Co | Vent-type bottle closure |
| US3114467A (en) * | 1961-08-23 | 1963-12-17 | Bernardin Bottle Cap Company I | Self-venting bottle cap |
| US3181720A (en) * | 1962-07-05 | 1965-05-04 | Armour & Co | Pressure or vacuum release closure for a container or the like |
| DE1432224A1 (en) * | 1962-07-23 | 1968-11-21 | Patton Franklin Seville | Vent seal for a closure |
| GB1022664A (en) * | 1963-05-10 | 1966-03-16 | Dale Ltd John | Self venting sealing element |
| GB1084564A (en) * | 1965-02-17 | 1967-09-27 | Metal Box Co Ltd | Improvements in or relating to sealing con tainers |
| US3443713A (en) * | 1966-12-21 | 1969-05-13 | John Kosar | Cornered blanks for closure caps,liners,washers,etc.,plus method of blanking and forming the blanks and utilizing the corners thereof |
| US3967746A (en) * | 1975-04-28 | 1976-07-06 | Botkin Albert L | Canning closure and method |
| US4089434A (en) * | 1976-12-10 | 1978-05-16 | Seling Sealing Products, Inc. | Venting liner |
| DE8122918U1 (en) * | 1981-08-04 | 1981-10-22 | Unilever N.V., Rotterdam | Childproof closure |
| DE8608896U1 (en) * | 1986-04-03 | 1986-09-25 | Henkel KGaA, 4000 Düsseldorf | Closure cap of a product container |
| DE8608897U1 (en) * | 1986-04-03 | 1986-09-25 | Henkel KGaA, 4000 Düsseldorf | Container for gassing products |
| DE3642998C1 (en) * | 1986-12-17 | 1988-05-19 | Haist Verpackung Beratung | Deep-drawn aluminum screw cap for glass bottles under internal pressure and deep-drawing device for a closure head for the manufacture of such screw caps |
| DE3744292A1 (en) * | 1987-02-12 | 1988-08-25 | Hertrampf Michael | Closure for a bottle or the like |
-
1991
- 1991-07-10 DE DE9108494U patent/DE9108494U1/en not_active Expired - Lifetime
- 1991-07-10 WO PCT/EP1991/001283 patent/WO1992000892A1/en active IP Right Grant
- 1991-07-10 EP EP94106369A patent/EP0620164B1/en not_active Expired - Lifetime
- 1991-07-10 DE DE59104085T patent/DE59104085D1/en not_active Expired - Fee Related
- 1991-07-10 EP EP91912512A patent/EP0537246B1/en not_active Expired - Lifetime
- 1991-07-10 AT AT94106369T patent/ATE140908T1/en not_active IP Right Cessation
- 1991-07-10 ES ES91912512T patent/ES2068596T3/en not_active Expired - Lifetime
- 1991-07-10 AT AT91912512T patent/ATE116249T1/en not_active IP Right Cessation
- 1991-07-10 DE DE59108056T patent/DE59108056D1/en not_active Expired - Fee Related
- 1991-07-10 DK DK91912512.0T patent/DK0537246T3/en active
- 1991-07-10 ES ES94106369T patent/ES2092352T3/en not_active Expired - Lifetime
- 1991-07-10 DK DK94106369.5T patent/DK0620164T3/en active
- 1991-07-10 CA CA002086836A patent/CA2086836A1/en not_active Abandoned
- 1991-07-10 DE DE4122783A patent/DE4122783C2/en not_active Expired - Fee Related
-
1995
- 1995-03-28 GR GR950400725T patent/GR3015549T3/en unknown
-
1996
- 1996-10-24 GR GR960402828T patent/GR3021473T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0620164B1 (en) | 1996-07-31 |
| DE4122783A1 (en) | 1992-01-16 |
| GR3021473T3 (en) | 1997-01-31 |
| DK0537246T3 (en) | 1995-06-12 |
| ES2068596T3 (en) | 1995-04-16 |
| DK0620164T3 (en) | 1996-12-30 |
| DE59104085D1 (en) | 1995-02-09 |
| DE59108056D1 (en) | 1996-09-05 |
| DE9108494U1 (en) | 1991-10-02 |
| EP0620164A1 (en) | 1994-10-19 |
| EP0537246B1 (en) | 1994-12-28 |
| EP0537246A1 (en) | 1993-04-21 |
| ATE140908T1 (en) | 1996-08-15 |
| ES2092352T3 (en) | 1996-11-16 |
| DE4122783C2 (en) | 2001-06-21 |
| GR3015549T3 (en) | 1995-06-30 |
| ATE116249T1 (en) | 1995-01-15 |
| WO1992000892A1 (en) | 1992-01-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |