Tear-open bottle cap

MEMORY. DESCRIPTIVE

The present invonoión refers to the structural improvement of caps for convenient bottles, removable

5 · by manual start, formed of light metal foil * Up to now, beer, carbonated beverages and other liquids packed in bottles and other small containers have been watered by means of crown caps * They have the disadvantage that to extract them a opener is not necessary

10. or other useful * In recent years there has been a tendency to replace the use of crown plugs with plugs that can be removed manually, thereby avoiding the need to use an opener or other useful. A type of manually removable cap is provided with a tear strip

15 * that can be torn by traction, which allows the cap to be broken and removed manually. This type of cap removable by starter has found a considerable aoeptaoión by the users.

It has been appreciated that the taponc-s for bo20. Onoocid cxtraiblesa manually per starters are difficult to remove without spilling and wasting the contents of the bottle if it is held by the user's hand while the cap is removed. This is because it is necessary to apply more traction. As it goes

25 · tearing the top of the plug. Thus, when the bottle is held with one hand and with the other tearing of the cap, the additional traction necessary to completely remove c-1 cap is not applied in a uniform manner, which makes it difficult to maintain the

- 3 fixed bottle and cause the spill or splash of the content.

One way to lessen this problem was to build the plug of luck than the debit lines. Litaoion tear more faoilmontc · However, in the construction of a tear strip with greater ease of tearing, several factors must be taken into account. For example, the depth and configuration of the weakening lines are determined to a large extent. Because of the pressure in the container that the plug has to withstand * Another factor is the shape of the weakened area or tearing defined by the weakening lines * In this regard, it has been seen that it is convenient that the weakening lines, located in the upper wall of

15 · plug, be arched and occupy the periphery of said upper wall.

Until now, the usual thing about the manufacture of cxtraiblcs caps by manual starting, has been to cover the weakening lines with a joint * This has served to

twenty. prevent the contents of the vineyard or bottle from establishing contact with the weakened area · In most cases, the joint is a type that conforms in aitu and adheres to the supc-rfioic · internal closure, covering the line of weakening * When removing the plug, it is not only necessary to tear it along the weak lines it. but the joint material must also be torn apart * In addition, the high temperature joint materials necessary for the preparation of sterilized foods have a greater tear resistance, which increases the

- 4 tear problem.

the force for cxtraoción, necessary to break the thin cape; metal inside the weakening line in order to extract the new ta5 »from a bottle is minimal. On the other hand, the particular arrangement of the weakening described herein offers the advantage that it allows the majority of the upper wall of the plug to be lifted, separating it from the terminal portion located below, as it is torn apart. stopper and opening occurs, so that only a very narrow ooundant poroion of the cap of the stopper is left for easy removal of the bottle ouando ends the tear.

Based on the foregoing, a principal object of

The present invention is to provide an improved tear-opening closure for metal foil for containers that can be easily removed manually.

Another object of the invention is to provide a metal plug or tear opening with a mc20 arrangement. weakening gaping that reduces the force of the nooosaria traction to tear open the cap and remove it from the flange of the bottle on the ounl is arranged.

Another object is to provide a weakened metal plug with a tear opening whose removal is easy, allowing for the purpose of tearing the joint.

Other more detailed objects may be apparent and will be partially spelled out in the following description of the invention, with reference to the accompanying drawings ** 2 · »

In these drawings, yes

Figure 1 shows a perspective view of an oierre cap in accordance with the invention.

5 · Figure 2 shows a plan view of the cap.

figure 3 ours the plug in diametral section

Figure 4 corresponds to a partial sectional view illustrating the juxtaposition between the cycle assembly. rrc and sonicircular capping of the plug.

Figure 5 shows a perspective view of the closure in tearing position, just before the separation of a bottle.

The closure cap of the invention, indicated in

15 · general with -1-, and such oomo is represented in figures 1 and 2, it is constituted of light metal foil and comprises a circular wall -2- surrounded by a rounded joint portion -3- · It is this joint portion It hangs a cylindrical skirt -4- that ends on an infe20 free edge. rior -5-. In the upper wall -2- a larger ciroular recess is formed -6- that extends radially towards the outside and enters the oorrospendiente zone to the rounded portion -3- scgdn a gradually inclined step -7oon which is defined as an oanal of Shallow and int '*

25 · poured -3-, as can be seen clearly in Figure 4 »In addition, the major recesses -6- are centrally arranged a ... minor recess -9- defined by an internal step -10-. In addition, c-1 closure plug is provided with an apprehension ear -11- that extends downwards with respect to - 6 - dol board book dol faldón -5- according to a short neck -12 from which said ear is extending radially haoia the outside 'and downwards according to a portion dc-Jbaso -13dc which protrudes a traction ring -14- · From the

5, base poroion -13- extends vc-rticalmcntc through the oucllo -12- and dol faldón -4- two reinforcement ribs embedded in outer haoia ol that end in the rounded portion of gasket -3 provided with two li10, no weakening points, generally indicated on -18-, and which, for illustrative purposes, are represented formed on the outer surface of the stopper, so they can also be used on their inner surface. the lines of weakening oomic-nzan in notched paths -17- formed on the edge dol

fifteen. skirt -5- on both sides of the neck portion -12- »From the notches -17-, the lines -18 ·· extend upwards through the skirt -4- * Upon entering the joint portion rounded -3-, the weakening lines will be mixed with each other in a section -19- after the oual

twenty. they are arched as indicated by -20- in Figure 2, extending close to the rounded portion of junction -3 - „. that surrounds peripherally to the upper wall of the plug -2-» Thus, the portions of ourvadas line -20- of dcbilitaoión are located in the joint of roundon25 · doada -3- y_dofincn c-1 outer board -3a- of the inverted channel -8- · The portions of weakened line -20- continue to along an arched section to an angularly displaced point approximately 45^to , surpassing the middle birth of the cap or leaning radially outward in a section -21- that slopes in the skirt -4- in the lateral area opposite to the ear of apprehension -11-.

In a non-limiting example, inside the stopper there is an annular gasket dc-_cicrrc -225 · constituted by a vinyl resin plastisol. As can be clearly seen in Figure 4, the joint -22- completely occupies the shallow inverted channel -8- defined by the outer esallon -7- of the recessed upper wall and the rounded joint pore ... ~ 3a- located serving anger

10 »do weakened line -20-. This joint configuration leaves the weakening line -20- exposed just below the outer edge of the joint, the inner edge of the oual is directed radially inward from the channel -8-, to form an effective upper closure when

15 · a container is applied »This line arrangement weakened completely outside the joint has the advantage of protecting the linear zone of weakening against the direct action of the packaged product without this having an effect on post-rcoubrinionto cos20 operations. cough Such protection is often necessary when the product is susceptible to leakage and I can cause a chemical attack 30brc the base metal of the iron plug or subsequent contamination of the packaged product. Flush with the weakening of the outer surface of the cap,

25 · produces a deterioration in the internal surface coatings against which, however, they must be protected.

Figure 5 shows a bottle -23- provided with a flange -24- that is widened circumferentially around the neck opening.

The oxerre plug -1- of the invention is shown in an intermediate opening position with the same torn, pc-ro before finishing the separation with respect to the

5 «bottom flange -24- formed in the bottle ·

In addition to the advantages already described which are obtained with the improved weakening configuration of the invention, the opening and removal of the plug are analogously improved · Until now a considerable amount has been found

10. tear resistance when breaking the sealing gasket -22 and traversing it during tearing of the stopper to separate it from the ouollo of the bottle on which it is arranged »Oomo is clearly evident from the relative disposition of the gasket and the dubbing line described in the invention ,

15 · It has completely avoided any tearing of the relatively resistant breakage joint material. The only tearing force necessary to uncover the bottle is necessary to break the very thin section of the bottom material of the dobilitaoion line.

twenty. Finally, the present arrangement of the dobilitaoion line has resulted in a significant improvement in the ease of opening the tear-open cap separated from the bottle. This ease of removal of the cap comes from reducing to a minimum the possibility that the remaining portions of the cap are set on the flange of the bottle. Oon the described weakening arrangement is only coupled with the flange of the bottle, after tearing, a narrow metal band formed by the skirt -4- and the remaining part of the rounded joint portion -3- · a tearing action it ends when the metal is cut along the entire length of the weakened lines -20- and the end points are reached away from the apprehension ear. By continuing to apply to prayer

5. -11- the normal traction force, faoilmcnto dol rebordo -24- is separated from the bottle the relatively doubly remaining portion of the cap, oon what avoids spillage or splashing dc-1 bottled product.

In view of the foregoing, it is readily apparent that the plug of the object of the present invention provides numerous advantages. It should be noted that in the construction of the cap, variations can be effected, such as in the constitution or shape of the apprehension ear. Also, I / O can use different gasket systems, or, for example, a total coating adhered to or retained in the interior of the plug.

those skilled in the art can devise other fields and modifications in the constitution and different forms of realization of the object of the invention, without parking20. Tarso for it of the spirit or frame of the same. Therefore, it means that all the material contained in the preceding description should be interpreted as merely illustrative and not in a limiting sense.

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