WO2013172737A1

WO2013172737A1 - Cylinder for aerosols (alternatives)

Info

Publication number: WO2013172737A1
Application number: PCT/RU2013/000238
Authority: WO
Inventors: Федор Алексеевич ОСТРОУШКИН; Отто Юльевич САБСАЙ
Original assignee: Общество с ограниченной ответственностью "Лидер-пак"
Priority date: 2012-05-12
Filing date: 2013-03-22
Publication date: 2013-11-21
Also published as: EP2848555B1; EP2848555A4; PL2848555T3; EP2848555A1; CN204223499U

Abstract

The present invention relates to the field of packaging, in particular to a container, and constitutes a vessel made from polyethylene terephthalate (PET) which is intended for filling with aerosols. The technical problem addressed by the invention is that of increasing the operational strength of cylinders made from PET for aerosols by changing the design of elements of said cylinders, namely the base and the neck. The technical problem of interest is solved in that, according to a first alternative, in a cylinder made from PET for aerosols, the cylinder comprising a neck and a body with a base, the base has radial grooves, and the edge of the neck is equipped with an outwardly projecting, annular, right-angled bead forming a flat end of larger diameter, wherein the width of the wall of the neck together with the bead is approximately equal to the height of the bead, while, according to a second alternative, the cylinder comprising a neck and a body with a base, the base has radial grooves, the neck is equipped with an outwardly projecting, annular bead which is arranged on a lateral surface offset from an upper edge which, in longitudinal section, is virtually semicircular in shape, wherein the upper half of the bead is bevelled inwards to the edge of the neck, and an annular groove with a concave surface is formed level with the bead inside the neck. In a preferred alternative embodiment of the cylinder, the radial grooves on the base can be widened and deepened from the centre to the periphery, forming a petaloid base, and the wall of the body can have a thickness of 0.3 mm to 1.2 mm.

Description

Aerosol can (options)

The present invention relates to the field of packaging, in particular to containers, and is a container made primarily of polyethylene terephthalate (PET) and intended to be filled with aerosols.

The use of industrial containers in the form of metal cylinders for storing aerosols is widely known (see, for example, the journal “Raw Materials and Packaging” 10 (29), 2006). Durable metal cylinders do not change their shape from increased pressure inside them, and adequately protect the product from the adverse effects of the environment. However, the operation of metal cylinders has a number of disadvantages associated with additional costs, namely:

- the high cost of the material from which the balloon is made and the complex technology of its manufacture;

- exposure to most aggressive environments and

mechanical damage;

- significant own weight of the cylinder, which reduces the volume of a single delivery of the product;

- it is impossible to produce transparent cylinders;

- difficult disposal.

Also known is the industrial container in the form of a container for aerosols made of such a polymeric material as PET, described in utility patent RU 22125, class. B65D 1/00, published 20.1.2001. This device is the closest analogue of the proposed technical solution.

The benefits of PET cylinders are numerous. They are associated with the exclusion of all the above disadvantages, while PET is completely recycled when disposing of cylinders.

The disadvantage of the design of the known cylinder made of PET are low strength characteristics during its operation. The spray vigri fluid is under high pressure. In this regard, it is necessary that the design of the container does not change shape when the pressure inside is increased pressure was not deformed and not relieved through a cap with a valve that was loosely pressed on the neck. The technical problem to which the invention is directed is to increase the operational strength of aerosol cans by changing the design of its elements: bottom and neck.

The stated technical problem is solved due to the fact that in the aerosol can according to option 1, containing a neck and a body with a bottom, the bottom is made with radial grooves, and the edge of the neck is provided with an annular rectangular shoulder protruding outward, forming a flat end face of a larger diameter, with the wall width the neck with the shoulder approximately equal to the height of the shoulder.

In a preferred embodiment of the container, the radial grooves at the bottom can be made widened and recessed from the center to the periphery to form a pentaloid bottom, and the body wall may have a thickness of 0.3 mm to 1.2 mm.

The stated technical problem is also solved due to the fact that in the aerosol can according to option 2 containing a neck and a body with a bottom, the bottom is made with radial grooves, the neck is equipped with an annular protrusion protruding outward, located on the side surface with an indent from the upper edge, which has a longitudinal section is a shape close to a semicircle, while the upper half of the shoulder is beveled inward to the edge of the neck, and an annular groove with a concave surface is made inside the neck at the level of the shoulder.

The finished product has improved performance due to the lack of deformation in the bottom and reliable adhesion of the neck with a cover having a valve. The cylinder (option 1), in addition to the bottom with grooves, has a massive neck with a shoulder. The cylinder (option 2), in addition to the bottom with grooves, has a massive neck with a shoulder and an annular recess inside the neck.

The invention is illustrated by graphic materials, where in Fig.1 - shows a front view of the cylinder (option 1),

in Fig.2 is a section along aa of Fig.1 (longitudinal section), (option 1). on Fig.3 - view B in fig. 2 (neck) (option 1).

figure 4 is a view of the cylinder from the bottom (option 1),

figure 5 - shows a front view of the cylinder (option 2),

in FIG. 6 - section along aa figure 5 (longitudinal section), (option 2),

7 is a view B in FIG. 6 (neck) (option 2).

PA Fig. 8 is a bottom view of the container (option 2),

According to the first embodiment, the aerosol can contains a housing 1, a cylindrical shape, a bottom 2, and a neck 3. The bottom 2 is made with radial grooves 4 forming stiffeners. The edge of the neck is provided with an outwardly projecting annular rectangular bead 5 forming a flat end 6 of a larger diameter. The width of the neck wall together with the shoulder is approximately equal to the height of the shoulder. The bottom of the shoulder 4 is parallel to the top of the shoulder (the end of the neck) and is stepwise mated to the neck. In one embodiment of the container according to this utility model, the bottom 2 may have a pentaloid shape. The walls of the housing have a thickness of 0.3 mm to 1.2 mm.

According to the second embodiment, the aerosol can contains a housing 7, a cylindrical shape, a bottom 8, and a neck 9. The bottom 8 is made with radial grooves 10 forming stiffeners. The neck 9 is provided with an outwardly protruding annular shoulder 1 1 located on the lateral surface indented from the upper edge 12, having a shape in longitudinal section close to a semicircle. The upper half 13 of the shoulder is narrowed to the edge of the neck, and an annular groove 14 with a concave surface is made inside the neck at the level of the urtica. In one embodiment of the container, according to this utility model, the radial grooves at the bottom can be extended and deepened from the center to the periphery to form a pentaloid bottom 15. The walls of the body have a thickness of 0.3 mm to 1.2 mm.

First, a preform is made with a non-inflated neck, along the edge of which a rectangular annular bead 5 (option 1) or an annular bead 1 1 is made outside the neck with an annular groove 14 inside it (option 2). Then the preform is heated to the state of elastic rubber, placed in the mold and inflated in a rubber-like state with compressed air. In this case, the blow-off neck 3 is clamped in the clamping unit of the device, and the housing I is inflated. The shape of the body and bottom is determined by the mold. Next, the finished product cools on the cold walls of the mold. Radial grooves 4 (option 1) and 10 (option 2) form stiffeners at the bottom, which provide rigidity to the bottom and thereby increase the operational strength. Then, a valve is rolled onto the neck. In the first embodiment, the valve is put on top of the neck, closing the annular rectangular bead 5 and rolled. In the second embodiment, the valve is inserted inside the neck, and it enters the annular groove 14 inside the neck 9 with its annular protrusion, and thus the area of adhesion of the neck to the valve increases. As a result of this, the operational strength of the whole product is increased. The neck diameter is usually 20 and 25 mm.

Claims

Claim

one . Aerosol container containing a neck and a body with a bottom, characterized in that. that the bottom is made with radial grooves, and the neck edge is provided with an outwardly projecting annular rectangular shoulder, forming a flat end face of a larger diameter, while the width of the neck wall together with the shoulder is approximately equal to the height of the shoulder.

2. The cylinder according to claim 1, characterized in that the radial grooves at the bottom are expanded and recessed from the center to the periphery and form a pentaloid bottom.

3. The cylinder according to claim 1 or 2, characterized in that. that the case wall has a thickness of 0.3 mm to 1.2 mm.

4. The aerosol container containing a neck and a body with a bottom, characterized in that the bottom is made with radial grooves, the neck is provided with an annular protrusion protruding outward, located on the side surface with an indent from the upper edge, having a shape in longitudinal section close to a semicircle, with this upper half of the shoulder narrowed to the edge of the neck, and inside the neck at the level of the shoulder made an annular groove with a concave surface.

5. The cylinder according to claim 4, characterized in that the radial grooves on the bottom are expanded and recessed from the center to the periphery and form a pentaloid bottom.

6. The cylinder of claim 4 or 5, characterized in that. that the wall of the casing has a thickness of 0.3 mm to 1.2 mm.