RU2403191C2 - Easy-openable container and cover structure - Google Patents

Abstract

FIELD: transport, package.

SUBSTANCE: manually removable cover structure contains metal cover and plastic ring. Metal cover has central panel and outer wall ending in ring configuration passing in main outer direction. The plastic ring contains collar passing inwards and peripheral skirt going down from the collar. The skirt has a lug passing inwards. Passing inwards lug is clamped on the edge of cover with collar passing over cover ring configuration, and lower profile is complementary to the profile of container body top edge to which cover structure is attached during exploitation. Additionally, cover central panel is connected with ring configuration passing in outer direction by means of U-shaped channel. Easy-openable container and method for easy-openable container sealing are provided.

EFFECT: invention is aimed to creation of new manually removable cover structure which is easy-to-handle and eliminates the need to use any tool to remove it from container.

5 cl, 10 dwg

Description

Technical field

The invention relates to an openable container. Including, but not exclusively, it relates to the construction of a lid for an easily openable container used for packaging liquids such as paint or solids such as powders.

State of the art

For the packaging of paint, it is known to use metal containers having: a body whose bottom is soldered or made at the same time; a metal ring that is soldered to the open end of the container body; and a mounted cover that can be opened by inserting a lever into the channel at the edge of the ring.

In another type of construction, the mounted cover has: a U-shaped channel into which the lever is inserted, and a flange that extends radially outward from the channel. The plastic ring is snapped onto the outer edge of the lid and extends around the rolled out circular edge flange of the container body when the cover is fitted onto the container body.

Many recess designs were previously proposed, but essentially for all of them, it is actually necessary to insert a tool to disengage the clutch between the lid and the container body or ring. These designs are based on the principle of opening with a lever, and therefore they require some kind of tool so that they, like a lever, can open the container. In some examples, the lever acts on the spring wall of the container, on the ring or lid, as a result of which the container can be closed again, and when the container is opened, it deforms minimally.

Disclosure of the invention

According to the invention, there is provided a manually removable lid structure comprising: a metal lid having a central panel and an outer wall ending in an annular configuration extending substantially outwardly; and

a plastic ring with an inwardly extending annular protrusion and with a peripheral skirt extending downward from the protrusion, the skirt having an inwardly extending tide that snaps on the edge of the lid and the protrusion extends above the annular configuration of the lid and a lower profile complementary to the profile of the upper edge of the container body to which, during use, the lid structure is fixed; characterized in that it has a line of weakening along which at least part of the lower profile of the ring is capable of deforming or tearing it manually to open the container to which the lid structure is attached.

In contrast to the lever caps of the prior art, the plastic ring of the cap structure allows opening when the cap structure is attached to the container without the need for any tool. After the lower profile of the ring is torn off, the lid structure can be removed from the container, and therefore for the user the container looks like it has only two parts.

The central panel of the lid can be connected to the outer wall using a substantially U-shaped channel. Due to this, excessive penetration of the lid structure into the upper space of the container body is prevented. Typically, a sealant may be provided around the annular configuration of the lid and in contact with the outer wall.

The line of weakening is usually made tear-off and forms a strip or tape indicating an unauthorized opening.

According to yet another aspect of the invention, an openable container is provided, comprising: a metal container body having an open top; the lid construction described above, with a lower ring profile engaging with the rolled edge of the opening of the container body; moreover, the outer wall of the metal lid is planted inside the container body, as well as the outer wall and the container body have complementary flanges extending outward; however, in use, the weakened part of the annular profile is designed to manually remove the lid structure from the container body.

The container body usually has an outwardly rolled edge of the hole, and therefore the ring engages with this rolled up edge of the container body.

According to another aspect of the invention, there is provided a method of sealing an openable container, according to which:

the lid structure is placed on the open end of the metal container body; apply downward pressure to force the connected lid and ring onto the container body, as a result of which the lower profile of the plastic ring engages with the upper edge of the container body, and the outer wall of the lid is adjacent to the portion of the side wall of the container body; and while continuing to apply downward pressure, while simultaneously exerting outward radial expanding force to deform the outer wall of the lid and the adjacent wall of the housing into complementary collars.

Typically, this method can be used with a cover design having a U-shaped channel so that the expandable tool can be inserted into the channel for applying radial force to the outer wall of the channel to form collars.

Brief Description of the Drawings

Preferred embodiments of the invention are described below, by way of example only, with reference to the drawings, in which:

Figure 1 is a perspective view from above of a plastic ring;

Figure 2 is a perspective view from below of a plastic ring;

Figure 3 is a lateral section of a plastic ring, in section of section "C";

Figure 4 is a lateral section of a plastic ring, in section of a section "D";

5 is a schematic side view of a node of a plastic ring and a metal cover;

6-9 are schematic side views showing the installation of a cover structure on a container body;

Figure 10 is a schematic side view of a closed container.

Embodiment

The plastic ring according to FIG. 1 has an annular protrusion 2 and a skirt with an inner wall 3 and an outer wall 4. The tongue element 5 on the outer wall is provided for its gripping by the user when opening the container according to the more detailed description below. In this example, tide 6 is a fully circular tide for engaging with a metal lid to form a lid structure, with the lower profile 7 on the inner wall being engaged with the container body.

Figure 2 shows an isometric image of the lower part of the ring shown in Figure 1, and shows sections "A", "B", "C" and "D" having cutouts. In lateral sections of FIGS. 3 and / or 4, the annular protrusion 2, the tide 6 and the tongue 5 are clearly shown. The lower profile 7 has teeth 8 in areas without cutouts that facilitate the capture of the container body. The cutout in section “C” is indicated by reference numeral 9 in FIG. 3, and in section “D” by reference numeral 10; this section extends from the tongue 5 of FIG. 4.

Figure 5 shows the construction of the cover, which connects the plastic ring 1 and the metal cover 20. The cover 20 includes a Central panel 21, the inner and outer walls forming a channel 22; wherein the outer wall 23 extends into the outwardly extending annular configuration 24 ending at the edge. The drawing shows that the plastic ring is latched onto the annular configuration 24, as a result of which the protrusion 2 closes the annular configuration 24, and the tide 6 closes the edge of the lid at location 25.

As shown in FIG. 6: a downward pressure is applied by the tool 40 to the protrusion 2 to force the lid structure onto the filled container 30. When the lower profile 7 is in contact with the rolled edge 31 of the container body, the ring 1 is rotated outwardly and then latches around the rolled edge in the position shown in Fig.7. 7, the lid structure is attached to the container body 30, and between the annular configuration 24 of the metal lid and the top of the rolled edge 31 there is a sealing composition 26. The lower profile 7 of the plastic ring has a shape corresponding to the shape of the rolled edge 31, and ensures smooth contact around the rolled edge .

The next step in the installation of the cover structure involves subsequent engagement between the outer wall 23 of the channel 22. The downstream portion 41 of the tool 40 has a radially outwardly extending collar 42 which is brought into contact with the outer wall 23 by applying a radial expanding force. With continued downward pressure, an expanding force is simultaneously applied to ensure that the shoulder 42 is correctly positioned with respect to the outer wall 23. Due to the continued downward pressure during expansion, the compression of the composition also continues during expansion. This compression also continues to act after blocking the lid in the housing and partly with a plastic ring.

These combined efforts are applied until complementary collars are formed under the bend 31 in the wall of the lid 23 and the wall of the container body 32. Then, the tool 40 is retracted in the radial direction, while the downward pressure is maintained (FIG. 9) and the tool 40 is removed leaving the finished structure according to Figure 10.

The invention is set forth above by way of example only, and it is possible to make changes within the scope of the invention in accordance with the attached claims to the method of forming the structure of the lid or to the method of mounting it on the container body. For example, although the complementary element 32 is called a “shoulder”, this element can clearly be a combination of beads, independent tides, or other complementary element.

Claims (5)

1. A manually removable lid structure comprising:
a metal cover (20) having a central panel (21) and an outer wall (23) ending in an annular configuration extending mainly in the outer direction (24); and
a plastic ring (1) containing an inwardly extending annular protrusion (2) and a peripheral skirt (3.4) extending downward from the protrusion, the skirt (3.4) having an inward tide (6) that is latched onto the edge of the lid with a protrusion (2) extending above the annular configuration (24) of the lid, and a lower profile (7), which is a complementary profile of the upper edge of the container body (30), to which, during use, the lid structure is attached,
characterized in that the central panel (21) of the lid is connected to the outwardly extending annular configuration (24) by means of a U-shaped channel (22). 2. The design of the lid according to claim 1, additionally containing a sealing composition (26) around the annular configuration (24) of the lid and in contact with the outer wall (23). 3. The cover design according to claim 1 or 2, in which the line of weakening forms a strip or tape of tamper evident on the lower profile (7) of the plastic ring (1). 4. Easy-open container containing:
a metal container body (30) having an open top with an outwardly rolled edge (31) of an opening;
lid construction according to claim 1 with a lower profile (7) of the plastic ring (1) engaging with the rolled edge (31) of the container body;
in which the outer wall (23) of the metal cover (20) is fitted inside the container body (30), as well as the outer wall (23) and the container body (30) have complementary outward flanges (32); and
in which, in use, the weakened part is designed to manually remove the lid structure from the container body. 5. A method of sealing an openable container, according to which:
The lid structure of claim 1 is placed at the open end of the metal container body;
applying downward pressure to force the connected lid and ring to be put on the container body, as a result of which the lower profile of the plastic ring engages with the upper edge of the container body, and the outer wall of the lid abuts the portion of the side wall of the container body; and
while continuing to apply downward pressure, at the same time exerting outward radial expanding force is applied to deform the outer wall of the lid and the adjacent wall of the container into complementary collars.

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