RU219557U1 - Plastic bottle capper - Google Patents

Abstract

The utility model relates to packaging, specifically to a metal-plastic device for capping a bottle, containing a cap made in the form of a single polymer part, having a round horizontal wall with an outer surface, from which an annular vertical wall extends downwards with an outer surface ending in the lower part with an end edge, and a crimp ring adjacent to the end edge of the cap, as well as a metal shell, fixed with hot melt adhesive on the cap from the side of the said outer surfaces and having a round horizontal wall with an inner surface, from which an annular vertical wall with an inner surface extends downward. According to the claimed utility model, on the outer surface of the annular vertical wall of the cap, vertically oriented protrusions are made that are in contact with the inner surface of the annular vertical wall of the shell, and the hot melt adhesive is applied between the annular vertical walls of the cap and the metal shell. The above-described design of the metal-plastic bottle capping device ensures reliable fixation of the metal shell relative to the polymer cap, and thus the problem of the shell scrolling relative to the cap and the device destruction at the bottle capping stage is solved. 4 w.p. f-ly. 6 ill.

Description

The utility model relates to packaging, more specifically, to a capping device fixed on the rim of a bottle, and even more specifically, to a metal-plastic bottle capping device.

It is expected that the claimed utility model will find application primarily for capping bottles of alcoholic beverages, but it can also be used, for example, for capping bottles for liquid products, such as liquid edible oils, milk, cream, mineral water, lemonade, etc. .d. In addition, the claimed device, no doubt, will find application for capping bottles with technical liquids, such as technical alcohol, acetone, etc.

According to the applicant, the closest analogue (prototype) in relation to the claimed utility model is a cap-cover disclosed in patent RU 106226 U1. This cap-cap, as well as the claimed utility model, is intended for capping a bottle, it contains a cap made in the form of a single polymer part, having a round horizontal wall with an outer surface, from which an annular vertical wall extends downward with an outer surface ending in the lower part. end edge, and a crimp ring adjacent to the end edge of the cap, as well as a metal shell fixed on the cap from the side of the mentioned outer surfaces and having a round horizontal wall with an inner surface, from which an annular vertical wall extends downward with an inner surface.

The main advantage of the cap-cap according to patent RU 106226 U1 is that the design of this device itself is very simple, in fact, the cap-cap consists of only two parts, namely, a polymer body and a ferrule, as well as a metal shell. The assembly of the cap-cover is reduced to pressing the metal shell onto the polymer body using a press machine. To fix the metal shell on the polymer body, before pressing, hot melt adhesive is applied to the outer surface of the round horizontal wall of the cap using a special nozzle, which, when dried, connects the cap to the shell, while the joint spot is located exclusively between the outer surface of the round horizontal wall of the cap and the inner surface of the round horizontal wall of the shell. It should be noted that the ingress of hot melt adhesive on the outer surface of the annular vertical wall of the cap is highly undesirable, since this leads to the fact that when the metal shell is pressed onto the polymer body, the hot melt adhesive is squeezed out onto the outer surface of the ferrule, which spoils the appearance of the final product, and eventually such a product is rejected as unusable. When the cap-cap is installed on the rim of the bottle, the metal shell is subjected to a torque, which tends to rotate the shell relative to the cap. The action of this torque can lead to the separation of the hot melt adhesive from the cap and / or shell, which leads to the scrolling of the metal shell relative to the polymer cap, as a result of which the integrity of the cap-cap structure is violated, i.e. the cap-cover is destroyed and it becomes unusable. For the reason described above, up to 15% of caps are discarded at the bottle capping stage.

The claimed utility model is based on the task of creating a new metal-plastic device for capping a bottle, the design of which would ensure reliable fixation of the metal shell on the polymer cap, and thus solve the problem of scrolling the shell relative to the cap and destroying the device at the stage of capping the bottle.

This problem is solved due to the fact that in a metal-plastic device for capping a bottle, containing a cap made in the form of a single polymer part, having a round horizontal wall with an outer surface, from which an annular vertical wall extends downward with an outer surface ending in the lower part with an end edge, and a crimp ring adjacent to the end edge of the cap, as well as a metal shell fixed on the cap from the side of the mentioned outer surfaces and having a round horizontal wall with an inner surface, from which an annular vertical wall extends downward with an inner surface, according to the claimed utility model, on the outer On the surface of the annular vertical wall of the cap, vertically oriented protrusions are made in contact with the inner surface of the annular vertical wall of the shell.

In such a device, reliable fixation of the shell relative to the cap is provided due to the fact that when the shell is pressed onto the cap, vertically oriented channels are formed between them, limited, on the one hand, by the inner surface of the annular vertical wall of the shell and, on the other hand, by the surfaces of the protrusions. These channels are penetrated by a portion of the hot melt adhesive injected between the shell and the cap. Thus, the hot melt adhesive is applied not only between the round horizontal walls of the shell and the cap, but also between their annular vertical walls. In fact, after the hot-melt solidifies between the shell and the cap, in the zone of contact of the vertical walls, an integral slotted connection is formed, which completely prevents the shell from scrolling relative to the cap at the stage of corking the bottle.

It would be expedient for the cap to have an annular chamfer at the transition point between the outer surface of the circular horizontal wall and the outer surface of the annular vertical wall. The chamfer facilitates the flow of the melt adhesive from the area between the circular horizontal walls of the shell and the cap into the vertically oriented channels mentioned above. In addition, the presence of a chamfer simplifies the pressing of the shell onto the cap.

It is equally expedient that each of the protrusions, in side view, would have an arcuate convex profile. As a result of this design, the cap acquires a barrel-shaped shape and, when pressed, the shell sits more tightly on the cap, which makes the fixation of the metal shell on the polymer cap more reliable. In addition, pressing the shell onto the cap is simplified.

Our experience in the manufacture and use of the proposed metal-plastic bottle capping device has shown that adjacent protrusions should be located one relative to the other at the same distance, ranging from 0.5 mm to 3.5 mm. If the distance between adjacent protrusions is less than 0.5 mm, then the penetration of the hot melt adhesive will be difficult, which is undesirable. On the other hand, if the distance between adjacent protrusions is more than 3.5 mm, then there will be an unreasonable overspending of the hot melt adhesive, which is impractical for mass production of devices.

In the following, the claimed metal-plastic bottle capping device will be described in detail with reference to the attached enlarged images, in which:

fig. 1 - depicts the inventive metal-plastic device for capping a bottle, a perspective view from above;

fig. 2 - made in the form of a single polymer part, the cap and the ferrule, a perspective view from above;

fig. 3 - axial section of the proposed metal-plastic device for capping the bottle;

fig. 4 is a side view of the cap and ferrule made in the form of a single polymer part;

fig. 5 is an axial section A-A in FIG. 4 made in the form of a single polymer part of the cap and the ferrule;

fig. 6 - made in the form of a single polymer part, the cap and the ferrule, a perspective view from below.

The inventive metal-plastic device for capping a bottle 1 (Fig. 1), before the first opening of the bottle, contains only two parts, namely, cap 2 (Fig. 2) and a ferrule 3 made in the form of a single polymer part. the edge of the cap 2. A metal sheath 4 is pressed onto the polymer part, as shown in FIG. 1 and FIG. 3.

The cap 2 has a round horizontal wall 5 (Fig. 3) with an outer surface 6 (Fig. 5), from which an annular vertical wall 7 (Fig. 3) extends downward with an outer surface 8 (Fig. 5) ending with an end edge 9.

The metal shell 4, fixed on the cap 2 from the side of its mentioned outer surfaces 6, 8, has a round horizontal wall 10 with an inner surface 11, from which an annular vertical wall 12 extends downward with an inner surface 13.

According to the claimed utility model, on the outer surface 8 of the annular vertical wall 7 of the cap 2, vertically oriented protrusions 14 (Fig. 2) are made in contact with the inner surface 13 of the annular vertical wall 12 of the shell 4. As a result of the protrusions 14, vertically oriented channels 15 are formed between them, limited, on the one hand, by the inner surface 13 of the annular vertical wall 12 of the shell 4 and, on the other hand, by the surfaces of the protrusions 14.

The cap 2, at the point of transition of the outer surface 6 of the circular horizontal wall 5 into the outer surface 8 of the annular vertical wall 7, has an annular chamfer 16 (Fig. 4).

Each of the projections 14, in side view, has an arcuate convex profile, as can be clearly seen in FIG. 4.

Neighboring protrusions 14 are located one relative to the other at the same distance B, equal to 2 mm.

On the inner surface 17 (Fig. 6) of the annular vertical wall 7 of the cap 2, elements 18 of the screw connection of the cap 2 with the rim of the bottle are made. Trapezoidal elements 20 are made on the inner surface 19 of the ferrule 3 to prevent the ferrule 3 from turning relative to the bottle finish.

As noted above, the above-described design of the metal-plastic bottle capping device ensures reliable fixation of the metal shell relative to the polymer cap, and thus solves the problem of the shell scrolling relative to the cap and device destruction at the bottle capping stage.

Claims (5)

1. A metal-plastic device for capping a bottle (1), containing a cap (2) made in the form of a single polymer part, having a round horizontal wall (5) with an outer surface (6), from which an annular vertical wall (7) extends downward with an outer surface (8), ending at the bottom with an end edge (9), and a ferrule (3) adjacent to the end edge (9) of the cap (2), as well as a metal sheath (4) fixed with hot melt adhesive on the cap (2) from the side of the mentioned outer surfaces (6,8) and having a round horizontal wall (10) with an inner surface (11), from which an annular vertical wall (12) extends downward with an inner surface (13), characterized in that on the outer surface ( 8) of the annular vertical wall (7) of the cap (2), vertically oriented protrusions (14) are made in contact with the inner surface (13) of the annular vertical wall (12) of the shell (4), and the hot melt adhesive is applied between the annular vertical walls (7, 12) cap (2) and metal shell (4). 2. The device according to claim 1, characterized in that the cap (2), at the point of transition of the outer surface (6) of the circular horizontal wall (5) into the outer surface (8) of the annular vertical wall (7), has an annular chamfer (16) . 3. The device according to claim 1, characterized in that each of the protrusions (14), in side view, has an arcuate convex profile. 4. The device according to claim 1, characterized in that adjacent protrusions (14) are located one and the same distance relative to the other, ranging from 0.5 mm to 3.5 mm. 5. The device according to claim 1, characterized in that the hot melt adhesive is applied between the round horizontal walls (5, 10) of the cap (2) and the metal shell (4).

Images