DE2227098A1 - Snap-lock closure caps of plastic for bottles - Google Patents

Description

Snap-lock, liquid-tight caps made of plastic material for closing glass or plastic bottles, i.e., caps comprising an end portion and a rim, abutting the inner surface of the end portion two concentric ring parts are formed, one of which penetrates the neck opening of a bottle or the like. serves, while the other, with an inner annular Rib-provided, ring part is used to engage the outer end of the bottle neck, with its

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Rib behind a projecting annular rim of the Neck end snaps into place to complete the snap lock.

The invention is based on the object of an easily solvable To create cap so-that by simple application opposite Pinger pressure on the edge causes a physical displacement of the cap to the snap lock to solve, the cap also designed should be that it is particularly suitable for use in automatic bottle capping machine η to a suitable alignment ä «j. ' j ^ appe to ensure the initial engagement of the snap-lock seal.

To solve this problem, according to the invention, in a snap locking cap of the type mentioned above, that the edge of the cap has an oval open end, the major axis of the oval open end being greater than is the length of the corresponding parallel axis of the closed end section and where the minor minor axis is substantially the same length, or only a slightly greater length, than the corresponding parallel Axis of the sole-eating end portion and that the free edge end runs parallel to the closed Sndabsohnitt this is distanced in such a way that when used

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in the case of a hash that forms an oval ramp with one Shoulder portion is provided, this at least partially during the snap locking of the cap on the bottle neck lies within the cap edge, so that in the area of the open end of the cap on the outer edge portions the ends of the main axis exerted, each facing each other, finger pressure causes the rim and edges to slide up the ramp and so the whole Slide the cap to release the snap lock.

If the cap is provided with a circular closed end, the outer one of the concentric ring portions be designed as a thickening of the edge at this end of the cap.

If the cap has an oval or similarly shaped closed end, it is advantageous to have this closed End adjacent between the inner wall of the rim and the outer ring part opposing tapered ribs provide which extend along a line parallel to the main axis in a plane containing this axis.

The cap, which can be made from medium grade polyethylene, is suitable for use on bottles with a neck Diameter, which is in an external locking

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edge bead ends in the rib or the sealing edge bead of the outer ring portion of the cap engages to conventionally seal the snap-lock, fluid-tight To create a tight seal, with the shoulder or body end of the bottle having a protruding portion is provided, which is designed and dimensioned in its shape so that it is within the open end of the Cap and forms a ramp as the height increases towards the neck.

The depth of the cap rim is dimensioned in relation to the length of the neck of the bottle to be used, that in the snap-locked engaged position of the cap, the open end of the edge has no contact with the outer surface the bottle next to the ramp part. Inside, the end of the rim is preferably tapered in order to engage and to facilitate sliding on the ramp section of the bottle.

To remove such a cap, from the outside in opposite Directions finger pressure exerted on the more curved edge section in the area of its open end, so that these sections move towards one another with external deformation of the corresponding wall sections, in such a way that that the edges of this Randabsohnitte on the ramp or the

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slide the inclined protruding section of the bottle downwards and move the cap accordingly »see above that the snap-locked cooperating ropes are released. The user should try to remove the cap by twisting it Removing the bottle from the bottle, as he is familiar with removing so-called screw caps, will lead to this Rotational movement of the cap relative to the bottle to the fact that the edge portions of the cap with less curvature over the the same sections of the ramp or the protruding parts of the bottle slide evenly and again the cap move as a whole to release the snap-lock links. This is done in the same way as by the finger pressure deformation, but under etching of other sections the edge of the cap.

The end section of the cap can be circular, but has preferably an oval shape, similar to, but not necessarily exactly, the oval shape of the open end and lying in a plane parallel to the plane of the open end of the cap. They length the major axis of the open end can be the length of the small secondary connector that is arranged at right angles to it, based on the corresponding axes of the end section, exceed considerably, in order to create a cap with a rim in any case, the Vandabsohnitt with opposite one another

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has substantially parallel sections divided into opposing sections (at the ends of the Main axis of the open end of the cap), which diverge from the closed end to the open end of the cap .

The provision of the inner ribs ensures proper alignment of the cap with the bottle neck when the cap is in an automatic cap sealing machine to a solohe bottle should be applied without adding a stiffener, which would cause the edge to bend when used opposing finger pressure or twisting the cap.

Further advantages, features and details of the invention emerge from the following description of two exemplary embodiments on the basis of the figures in the drawing. Show:

Figure 1 is a plan view of a cap with a round closed end;

FIG. 2 shows a section through the cap according to FIG. 1 along the line II-II;

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Figure 3 is a plan view of a cap with an oval closed end)

FIG. 4 shows a section through the cap according to FIG. 3 longitudinally

the line IV-IV with an improving deviation;

FIG. 5 is a perspective view of the cap according to FIG in insert position on a bottle;

FIG. 6 shows a plan view of the bottle according to FIG. 5 to show the oval ramp section all around the bottle neck, which is appropriately adapted in the oval open end of the cap;

Figure 7 shows a section through the arrangement according to Figure 5 and FIG. 8 shows a section corresponding to FIG. 7 in FIG

Deformation of the edge portions of the cap. use opposite fingerprints, indicated by arrows, shows and the upward sliding of the This edge section ends on the ramp section of the bottle to move the cap and the To release the son app lock.

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Referring to the figures in which corresponding parts is provided with the same reference numerals, in particular on Figures 1 and 2, 1 is a flat cap Plastic material, for example polyethylene, denotes, which includes a circular end portion 2 at which one side of one-piece concentric ring sections 3 and are arranged of substantially the same height, of which the inner ring section 3 can be tapered at the edge of its outer surface in order to prevent the ringing into the opening of the To support the bottleneck. The outer ring section 4 has on its inner surface an annular visible edge bead 5 spaced apart from the cap end section 2. The two Ring sections 3 and 4 form the cap portion of a conventional snap-lock, liquid-tight closure assembly for a bottle with a neck of the appropriate diameter, which has a ring-shaped locking rim at the end is provided. The cap has an integral outer rim 6 extending from the edge of the closed End section 2 in the same seal as the concentric ring sections 3, 4 and extends in one Dimension is enlarged to taper into an oval-shaped, open end, the length of the major axis of this Ovals exceed the length of the corresponding parallel axis of the closed end, while the perpendicular minor axis of the oval directed towards the main axis la essential

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union has the same length, or only a slightly greater length, than the corresponding parallel to it Axis of the closed end of the cap. The wall sections of the outer band therefore diverge from the closed end 2 towards the open sin in one plane (Figure 2), while the wall parts of the outer edge in a plane perpendicular to it run essentially parallel to one another.

The outer ring 4 can be formed by a wall thickening of the outer edge in the vicinity of the closed end, such as it is essentially shown in FIG. The open end of the outer edge 6 advantageously has, as shown, an inward bevel 8.

In a modified form of the cap shown in FIGS. 3 and 4, the closed end section 9 has a an oval shape that is similar to, but not necessarily the same as, the shape of the open end of the cap, and wherein the major axes of the ovals are parallel to one another and are each larger than the corresponding rectangular ones to the running secondary axes and the length of the Major axis of the open end is larger than that of the closed In the end. In this way the length of the major axis of the open end exceeds that of the closed end strong enough to avoid diverging wall sections of the edge 6,

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as previously noted and shown in Figure 4, to create while the corresponding love axes are either essentially have the same length or that of the open end is only slightly longer than that of the closed end End is so that the wall sections in a plane perpendicular to that shown in Figure 4 is substantially are parallel.

In the case of the shape of a cap shown in FIGS. 3 and 4, the outer ring section is oval due to the oval shape of the closed end spaced from the diverging belt wall portion so that if a misalignment occurs, a such cap with respect to the bottle neck in an automatic bottle capping machine the end of the bottle neck could partially penetrate into the space between the outer ring section and the edge. To avoid this and to ensure proper alignment of the cap with respect to the bottle neck are inside between the Inner wall of the edge 6 and the outer ring portion of the closed end 9 adjacent one-piece ribs 10 and 11 provided. These ribs have a width that increases towards the ring (see FIG. 4) and lie along a line parallel to the main axis in a plane containing this axis. The circumference of the neck end of a bottle is

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grab one of these tabs in the correct alignment with respect to the son snap locking rings.

In FIG. 5, the cap according to FIGS. 3 and 4 is put on on a bottle shown in Figure 6 is shown. The one shown Bottle, as well as other bottles, in which the cap according to the invention can be used, is with a upper shoulder or an upper ind section 12 which corresponds in shape to the open end of the cap and is dimensioned so that it lies within the open end of the cap. The part 12 increases in height from the bottle body to Neck with a slightly curved surface that forms an oval ramp into which the cap rim can engage. The neck of the bottle terminates in a conventional locking bead 13 and also has, in a likewise known manner, a further, spaced-apart bead 14 for interaction with an automatic bottle sealing machine on. The length of the edge of the cap should be chosen so that the end of the edge does not make contact with the Bottle next to the ramp section 12 possesses when the cap is placed on the bottle and the sealing edge bead Cap is snapped behind the locking rim bead 13 of the bottle to, as shown in Figure 7, the snap lock to complete. The Flasohe can of course have any desired shape, for example be curved, and the portion 12 can be in the Flasohe

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«12-

run and have a shoulder that always makes sure

that there is a hat or recess so that the end of the

Sappenrandes the bottle η outside surface next to the Raapenab-;

cut not touched »since this is the necessary intervention j

the cooperating < that form the snap lock

Paragraphs could interfere. . To remove the cap from the bottle, do-d with the

finger pressure on its edge near the open end j

namely on the opposite sections with '■

small radius of curvature at the ends of the major axis of the

open end exercised. By such pressure on this, ·.

The edge slides off the ramp at 12 (figure 8)

deforming the intermediate sections of the '

open end of the edge upwards, with the corresponding-. . j de physical displacement of the cap upwards a loosening

the snap lock causes. -;

Should be from people whom Sohraubkappen trusts more are tried to remove the cap by twisting, this twisting of the cap leads relative to;

ilasohe to the fact that the sections of the open end of the;

Edge with a larger radius of curvature on the same surface

cut up ramp sections 12 of the bottle;

slide referred to above with;

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tötepr «Gken <i (* n effect» that ate tappe natch shifted up ö ued & £ · SchtmppTetrriegel eg solved

Kapp «is therefore easy to remove easily »ufbrißghmr, int« »it is pressed into a position ti «SekoappTerrlegeluag; »It« r you have liquid

Claims (2)

7777098 -H patent claims: 1. Plastic closure cap with an inner ring-shaped Bead for a snap singing hoop into a cooperating bead of the neck of a Fi ash with oval shoulder sections pointing upwards ascending inclined ramps form »characterized in that the band (6) of the flap is flexible and interrelated has opposite diverging wall sections forming an oval open end, in such a way that they are on top of one another prepared HLngerdnzck on this Yandabsohnitte the mugehSrlgen Xanten sections over the rope sections (12) move the bottle shoulder and thereby remove the cap Move away from the bottle »around the snap lock Loosen the forming band requirements (5 »13) st. 2. TerachlaBkappe to the plastic according to Aaepmch Λ ₉ characterized in that between these diverging waadabachttltten and the closed Sade (2) of the cap opposing tapered ribs (10,11) with zam geachloeaenen bath Ma zmaehmendes width are provided, WB the cap la an automatic nairhwversrhTieB-Lae with regard to the flaachenhalaes amaxarichten. 209853/0095 AS. Blank page