RU2769004C1 - Apparatus for vacuum capping of jars - Google Patents

Abstract

FIELD: closing jars.

SUBSTANCE: invention relates to equipment for vacuum capping and is intended for creating a vacuum in containers and sealing for the purpose of preserving food. The apparatus for vacuum capping jars comprises a tin rolling lid including a side liner in shape of a ring, an annular seal for the upper part of the neck of the jar, and a groove for placing the outer edge of the side liner. Stiffening ribs and a vacuum control valve are therein stamped on the lid.

EFFECT: possibility of vacuum preservation in domestic, household and industrial conditions.

2 cl, 8 dwg

Description

Technical field

The invention relates to methods and devices for food processing, namely vacuum sealing, and is intended to create a vacuum in containers and seal them in order to preserve food products.

The invention can be used both at home and in farms, as well as in small specialized enterprises, or industrial production lines.

State of the art

Twist-off screw metal lids are widely known, the inside of which is coated with a special polymer that seals the lid. These lids lend themselves well to vacuuming. Cans with tow-type lids are also used - with a powerful gasket and a metal clip. The disadvantage of bow lids is a very high price and, mainly, manual closure.

Known DEVICE FOR PRESERVATION IN JARS UNDER VACUUM Patent of the Russian Federation No. 2073635, consisting of a vacuum pump, a lid with a hole for pumping air from a can and a gasket for sealing it, while the lid is made with a lid-valve for closing under the action of its own weight and atmospheric pressure of the hole in the lid along its plane, while the lid-valve is made of an elastic material in the form of a disk with a side at the end.

The disadvantage of the device is the use of special covers and the lack of additional mechanical fixation of the cover.

The most common for conservation, due to simplicity and price, are tin lids with rubber sealing SKO - rolling steel lids. Such lids are securely fixed and seal the jar through the process of running in - deformation of the walls of the lid for a snug fit of the rubber ring to the neck of the jar. The disadvantages of using CLs are that, until now, cans with CLs could only be sealed under vacuum on expensive industrial machines with vacuum chambers and simultaneous running of the lid.

Disclosure of invention

The technical problem to be solved by the claimed invention is the ability to carry out vacuum preservation in domestic, domestic, and industrial conditions using inexpensive consumables compared to analogues - SKO covers.

The technical result of the claimed invention consists in the use of standard SKO lids for vacuum preservation of cans by installing or applying an O-ring made of food-grade silicone or other aseptic polymer to the inner surface of the SKO lid

The technical result of the claimed invention is achieved by the proposed device for vacuum sealing cans containing a tin roll-on lid, including a side gasket in the form of a ring, an annular seal for the upper part of the neck of the can and a groove for accommodating the outer edge of the side gasket, while stiffening ribs are stamped on the lid and vacuum control valve.

In the preferred embodiment, the options are:

the seal is represented by a gasket with a pressed-on side gasket in the form of an annulus.

The combination of the above essential features leads to the fact that:

the inventive solution allows for a very economical vacuumization process when canning cans;

the shelf life of the product is significantly increased compared to the use of standard SKO lids, since it is the preliminary creation of a vacuum inside the jar under the lid that makes the environment unsuitable for the development of harmful zygo- and ascomycetes (molds);

you can even use manual seamers and seal jars with SKO lids under vacuum;

consumers of canned food can personally verify that the container has not been opened before.

Brief description of the drawings

The essence of the invention is illustrated by figures.

On FIG. 1 shows a section of the connection of a jar of the SKO type and the neck of the jar, where the numbers indicate:

1 - Metal cover type SKO;

2 - Sealing gasket;

3 - Throat banks;

4 - Regular sealing ring - rubber SKO

On FIG. 2 shows the view of the connection when capping cans with a lid of the SKO type, where the numbers indicate:

1 - Metal cover type SKO;

3 - Throat banks;

4 - Regular sealing ring - gum SKO;

5 - Layer of food, thermo and waterproof plastic (polymer)

On FIG. 3 shows a view, a section of the L-shaped sealing gasket 6

On FIG. 4 shows a view, a view of the connection when capping cans with a SKO lid, using a L-shaped sealing gasket 6 numbers indicate:

1 - Metal cover type SKO;

3 - Throat banks;

6 - L-shaped sealing gasket

On FIG. 5 shows a sectional view, a view of the connection when capping cans with a lid of the SKO wedge-shaped sealing gasket 6 numbers indicate:

1 - Metal cover type SKO;

3 - Throat banks;

6 - Wedge-shaped sealing gasket

In FIG. 6 is a sectional view of the wedge-shaped seal 6

On FIG. 7 shows a section view, a view of the connection when capping cans with a SKO-type lid with a sealing gasket 6 of rectangular section, the numbers indicate:

1 - Metal cover type SKO;

3 - Throat banks;

6 - rectangular gasket

In FIG. 8 shows a sectional view of a rectangular seal 6

The implementation of the invention Below is an example of a specific implementation of the device, which does not limit the options for its execution.

The claimed technical solution consists in the use of SKO lids (for seaming) when canning under vacuum, for example, using a vacuum capper according to RF patent No. At the same time, the operation of vacuuming is added to the process of preservation with SKO type lids.

The following options for implementing the proposed solution are possible:

- installation of an annular gasket 2 made of food-grade silicone or other aseptic polymer, up to 1 mm thick, it is optimal to use 0.3-0.75 mm and up to 10 mm wide. Gasket 2 is installed on the bottom of the lid at the point of contact with the neck 3 of the can, while gasket 2 can either be installed with an adhesive joint on the bottom of the SKO 1 tin lid, or pressed with a standard gasket 4. fig. one;

- change the shape of the gasket 4 during serial production to the L-shaped fig. 3, wedge-shaped FIG. 5, 6, rectangular section of FIG. 7.8 with the installation of gaskets in such a way that 2 sealing contours are created along the neck of the can - top and side;

- application (spraying) on the lid of the SKO 1 additional polymer seal 5 at the point of contact of the bottom of the lid 1 with the neck 3 of the can of FIG. 2 according to the type of spraying cover twist off;

- application of an additional polymer seal 5 to the cover of the SKO 1 at the point of contact of the bottom of the cover 1 by means of thermal action (vulcanization or fusing).

The cross-sectional shape of the gasket ring 4 can be different with a minimum size of 1 mm (optimally 2 mm) providing reliable lateral sealing of the vessel

The cover body 1, by analogy with similar products and sources of information, can be made of metal, for example: electrolytic tin.

The sealing gasket 2 in the form of a ring, glued to the bottom or detached from it, installed or applied in the form of a spread 5 should have an outer diameter equal to the inner diameter of the lid 1, and the inner diameter should preferably be commensurate with the diameter of the neck 3 of a glass jar, minus a minimum 2 mm, and made of aseptic elastic material. The sealing gasket 2, made in the form of a round ring of aseptic elastic material, can be made, for example, of food-grade silicone or latex spreading mixture for baby milk nipples. It is possible to use gaskets 2 with smaller inner diameters or without them (filling the entire inner area of the can lid), but in such cases the central part of the gasket 2 under the action of vacuum will move away from the inner surface of the lid.

Cover options available:

To increase the rigidity of the product on the flat bottom of the cover 1, stiffening ribs can be stamped in the form of concentric circles in cross section - “steps”;

To control the vacuum in the jar on the lid 1 (flat bottom or top surface), a “vacuum control valve” in the form of a button (“clicking” center is convex) can be stamped.

Dimensions of the thickness of sealing gaskets and / or the layer of sealing applied seal:

1. In the case of the applied gasket 5 of FIG. 2 from 0.3 mm to 2 mm (depending on the elasticity and density of the material) optimally 0.5 mm;

2. In the case of a gasket glued to the surface of the cover or with fixation with a standard gasket, 0.3-0.75 mm can be used, while the optimal thickness is 0.5 mm;

3. In the case of a gasket 6 with a rectangular cross section of Fig. 7.8, from 0.5 to 2 mm, optimally 1 mm, depending on the properties of the material (elasticity, density);

4. In the case of the wedge-shaped gasket 6 of FIG. 5.6 thickness of the wide end (outer diameter) from 1 to 2.5 mm, narrow end 0.3-0.75 mm, optimally 2 mm and 0.5 mm;

5. In the case of the gasket 6 of the L-shaped section of Fig. 3.4, the narrow end (inner part) is 0.3-0.75, wide 1-2.5 mm. Optimal 0.5 mm and 2 mm

These dimensions are intended for the SKO 82 lid, for known SKO lids of a smaller diameter, for example, 58 mm (for mayonnaise jars), the dimensions of the gaskets change accordingly in diameter, remaining within the same size range in thickness in cases of changing the parameters of the lid itself and / or the jar, for example, if the size of the cap or shoulder is different, the corresponding dimensions of the gasket must also change.

The method of vacuum preservation consists in the use of a sealing cap 1 SKO, made taking into account one or more of the above conditions for installing a sealing joint.

The preservation method when using the proposed solution includes the following operations:

Installing the lid 1 with the bottom to the inner cavity of the filled glass jar;

Vacuum fixation of the lid 1 using, for example, a vacuum capper according to the patent of the Russian Federation No. the surface on which there is a jar with a lid, while the degree of vacuum inside the jar can be controlled by a vacuum gauge when the jars are vacuumed;

Crimping or ring rolling with rigid fixation of the cover.

Implementation examples

Example 1

1. A canning cover 1 with an annular regular gasket 4 is taken;

2. In addition to the regular gasket of square section adjacent to the outer side of the neck (corolla) of the can, the seal of the upper edge of the neck 3 (corolla) of the can in the form of an annular gasket 2 made of food-grade heat-resistant material is installed by fixing it with an adhesive composition, or by mechanical pressing with a standard gasket 4, or by spreading a special polymer 5 (rubber)

3. Further, after filling the can and / or other technological manipulations, the can with lid 1 is evacuated, the lid 1 is vacuum fixed.

4. Next, there is an annular rolling or crimping with a rigid fixation of the cover.

In addition, well-known regular gaskets have a square section. But you can use a round, triangular and any section with a minimum size of 1 mm (optimally use 2 mm) providing reliable sealing of the vessel, for this it is better to use a gasket made of elastic material instead of a regular gasket made of relatively hard rubber. The gasket is installed by analogy with the standard gasket 4 i.e. is placed by the contour of the outer diameter into the groove formed by the side and intended for fixing the standard gasket 4.

In this case, the thickness of the gasket used must be sufficient for fixing in this gutter, i.e. be about 2 mm.

The sealing of the upper edge of the jar neck is represented by the dimensions: outer diameter is equal to the inner diameter of the cover of the SKO, the inner diameter is preferably equal to the inner diameter of the neck of the vessel, minus a minimum of 2 mm, while the thickness should be at least 0.3 mm. Thus, the size of the inner diameter (the contour of the gasket) should preferably be commensurate with the diameter of the neck 3 of the glass jar, for example, when using the SKO lid, a gasket with an outer diameter of 89 mm and an inner diameter of 72 mm is used.

Example 2

Similar to example 1, but the lid is used WITHOUT a regular gasket 4. A special-shaped gasket (wedge, rectangular, L-shaped) is inserted into the lid, which is designed to simultaneously seal the side and upper surface of the neck of the can. The outer edge of the gasket is fixed in the groove of the lid, the inner section can be glued to the bottom of the lid.

The inner part of the flat gasket, not intended for installation in the gutter, can be made of a smaller thickness. During the evacuation process, the elastic gasket is deformed by forcing through the vacuum and the lid is fixed. After that, you can run in or crimp.

As a result of all operations, there is a reliable blockage of the jar, with a vacuum inside. Quality can be controlled visually by cap retraction or selective destructive testing. This top seal method allows low cost vacuum chambers/cappers to be integrated into conveyor production lines. It is enough to make a cap with a spring clamp on the can lid and a sharp release of the vacuum. Next, the bank is fed for running-in (crimping). The speed of work (air suction) increases, because. the dimensions of the chamber are made according to the size of the can and there is no running-in mechanism. And you don't have to use expensive pumps. Such chambers do not contain expensive vacuum inputs (if the mechanism drive is located outside the chamber). At the same time, extremely expensive vacuum chambers are used in which both evacuation and canning take place.

Experiments show the effectiveness of this solution when creating a vacuum during canning with improved and adapted SKO lids for this method.

Thus, the claimed invention solves the following problems, namely:

Reduces the cost and simplifies the processes of vacuum preservation;

Accelerates the conservation process;

Allows you to carry out the procedure of cheap vacuum preservation in domestic, domestic and industrial conditions.

Claims (2)

1. A device for vacuum sealing cans, containing a tin rolling lid, including a side gasket in the form of a ring, an annular seal for the upper part of the neck of the can and a groove for accommodating the outer edge of the side gasket, while stiffening ribs and a vacuum control valve are stamped on the lid. 2. The device for vacuum sealing cans according to claim 1, characterized in that the seal is represented by a gasket installed by pressing the side gasket in the form of a ring.

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