JPS60148462A - Vessel with cover - Google Patents

Abstract

1. Container (2, 28, 46) with closure cap (4, 30, 48) firmly sealed to the container and removable, having two sealing lips (20, 36, 54, 22, 42, 60) made of elastic material surrounding the container opening, thereby defined, that a primary sealing lip (20, 36, 54) is forming an angle of alpha < 90 degrees with a top surface (12, 38, 56) of the container (2, 28, 46) and surrounding the container opening (10, 40, 58) and a secondary sealing lip (22, 42, 60) forming an angle of beta =< 90 degrees with a side surface (16, 44, 62) adjacent to the top surface, whereby the side surface (16, 44, 62) is diverging from the top surface (12, 38, 56) with an angle (vtheta) relative to the container axis (14).

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a container with a lid, the lid being positively and removably connected to the container and extending around the opening of the container. It also has two sealing lips made of elastic material, which sealing lips are adapted to cooperate with the container.

PRIOR ART Containers with lids of the above type are manufactured by, for example, Sun Coast Plastics.
.

Inc.). The two sealing lips are arranged concentrically on the lid surface and define between each other an annular gap, which widens towards the open side of the lid. When the lid is attached to the container, the upper container edge engages the miso paste so that the sealing lip contacts the edge of the end surface surrounding the container opening. This results in significant drawbacks. For one thing, it is not possible to attach a diaphragm for closing the container opening to the end face of the container surrounding the container opening. Moreover, the inner sealing lip contacts the container end surface, which is not suitable as a sealing surface because it is asymmetrical in shape or has scratches. Moreover, since the edges of the end faces are rubbed by the sealing lips, they are exposed to considerable wear. If the screw-on lid is finally screwed on too tightly, there is a risk that the sealing lip will remain deformed or even break, resulting in a loss of the sealing action of the Seallitz.

Lidded containers, in which the lid has only one annular sealing lip or plate, have hitherto been the most popular. In the seal 1 nozzle described above, the sealing plate still acts on the end face surrounding the container opening. Containers with a sealing plate usually also have a closing diaphragm, which covers the container opening and is connected to an end surface surrounding the container opening. Such a closure diaphragm must be removed in order to open the container. However, there is usually some residue of bonding agent or closure diaphragm on the edge surrounding the container opening, and this residue interferes with the ability to reclose the container tightly with the lid. In addition, for example, there is a risk of damage to the seal plate by screwing the screw-on lid too tightly.

Problem to be Solved by the Invention The object of the invention is to design a container with a lid of the type mentioned at the outset in such a way that the above-mentioned disadvantages are avoided.

Means for Solving the Problems The means of the present invention for solving the above problems is that the first seal lift 0 is formed at an angle α〉9 on the end face of the container surrounding the container opening.
the second sealing lip is in contact with the side surface of the container at an angle β<90°;
In addition, the end faces also extend so that the side faces diverge at an angle (δ) to the container axis.

Embodiments Advantageous embodiments of the lidded container according to the invention are described in claims 2 to 10.

The first sealing lip and the second sealing lip can have various shapes and angular positions.The arrangement according to claim 2 has the effect of an overpressure valve, so that in the event of an excessive pressure in the container chamber. The first seal lip separates. The arrangement according to claim 6 guarantees an enhanced sealing function and is particularly suitable for containers in which there is no risk of the permissible rated pressure inside the container being exceeded. A similar embodiment is obtained for the second seal. The embodiment of the second sealing lip according to claim 4 provides a particularly sealing closure of the container. The embodiment according to claim 5 likewise has a certain valve effect. If such a sealing lip is used on the diffuser side, a gradually increasing resistance occurs when closing the container. The embodiment according to claim 6 provides a method for bending the edge area of the second sealing lip back in the direction towards the container opening when the lid is applied, which is achieved in part by the fact that the edge area of the second sealing lip is bent back towards the container opening. One reason is that conductive contact provides a high cooling function.

The sealing lip may be molded directly on the lid or, according to claim 7, on the insert. The insert allows the lid part and the insert to be made from different materials adapted to each function.

It is advantageous if the end surface surrounding the container opening is constructed as claimed in claim 8. This is particularly advantageous when a closing diaphragm is installed on the end face. However, a construction of the container according to claim 9 is also possible.

A lid with two sealing lips is already outstanding.

First Embodiment The container 2 shown in FIG. 1 is closed with a lid 4. The container 2 shown in FIG. Although the lid may be configured as a screw-type lid, in this embodiment, it is configured as a snap-type lid. For this purpose, the container 2 is provided with an annular raised part 6, to which the annular internal origin 8 of the lid 4 is locked.

The container 2 has a container opening 10 which is surrounded by an end face 12 . The end surface 12 forms an angle γ-90° with the container axis 14 of the container 2.
2 is followed outwardly by a side surface 16 which extends from the end face in a diverging manner at an angle δ to the container axis 14.

The lid 4 has an insert 18 with an annular first sealing lip 20 integrally molded therein. The first sealing lip 20 is inclined at an angle α with respect to the end face 12. The first roller f20 is inclined outward from the container axis 14. A second sealing lip 22 is integrally molded into the insert 18 in an annular shape, and the second pool lip 22 forms an angle .beta. with the side surface 16. The second sealing mark 22 faces away from the container opening 10.

End face 12 surrounding first sealing lip 20 and container opening 10
A closing diaphragm 24 is arranged between them. The closing diaphragm 24 may be in loose contact with the end face 12 and be pressed by the first sealing lip 20 or be connected to the end face 12, for example by adhesive. Closing diaphragm 24 has an outwardly projecting edge 26
With this, the closing diaphragm can be grasped at this edge 26 and pulled away from the end face 12 in order to open the container.

In this embodiment, the first sealing lip 20 is oriented outwardly from the container axis 14 and the second sealing lip 22 is oriented away from the container opening 10. The sealing lip has, so to speak, a valve function, allowing pressure equilibrium between the inside and outside of the container.

Second Embodiment FIG. 2 shows a container 28 with a lid 30 of screw-on construction. The threaded portion 30 of the lid cooperates with the threaded portion 34 of the container. The lid 30 has a first seal lip 3.
6 is arranged and projects towards and contacts the end surface 38 surrounding the container opening 40. The first sealing lip 36 forms an angle .alpha. with respect to the end surface 38 and is inclined inwardly toward the container axis 14. The lid 30 has a second seal ridge 42 which is inclined towards the container opening 40 and projects towards and comes into contact with a side surface 44 which is inclined with respect to the container axis 14. are doing. The second sealing lip 42 forms an angle β with the side surface. In this embodiment, the two sealing lips 36.42 are inclined in a direction opposite to the flow direction from the container, so that these sealing lips 36.42 are more strongly attached to the end face 38 and the side face 44 by the internal pressure in the container. It's starting to feel pressured.

Sixth Embodiment In this embodiment, the lid 48 is provided with a snap closure as in the first embodiment. For this purpose, the container 46 is provided with a raised portion 50, against which an inwardly extending portion 52 of the lid 48 comes into contact. The lid 48 has a first seal lip 54
and the first sealing lip is inclined at an angle α with respect to the end face 56. End surface 56 surrounds container opening 58 .

The lid 48 further includes a second sealing lip 60 which projects toward and contacts a side surface 62 of the container at an angle .beta..

The side surfaces 62 are disposed divergently with respect to the container axis 14 and form an angle δ with the vertical. The second sealing lip 60 extends substantially perpendicularly to the side surface 62 so that when the container 46 is placed on the lid 48, the second sealing lip 60 has an edge 60 which is folded towards the container opening 48.
4.

In this embodiment, the first sealing lip 54, which is inclined away from the container axis 14, together with the end face 56 essentially constitutes an overpressure valve. If the pressure inside the container 46 is too high, the gas will
It can escape into the ring chamber 66 via the sealing hole 54. A ring chamber 66 is defined between the first sealing lip 54 and the second sealing lip 60 within the lid 48. The pressure increase in the ring chamber 66 is due to the rise in pressure at the edge 6 of the second seal ridge 60.
4 is pressed more firmly against the side surface 62, which improves the sealing effect.

The angles α and β of the sealing lip, the angle γ of the end face and the angle δ of the side face depend on various factors, such as the materials of the sealing lip and the container, overpressure or underpressure in the container, etc., but basically: The relationship holds: α<90°, preferably 10° to 5 D'β≦90°
, advantageously from 10' to 90'.On the basis of knowledge of the invention, a person skilled in the art will be able to select an appropriate angle depending on the circumstances.

The closure type according to the invention only works if two sealing lips are present. The two sealing lips cooperate around the entire circumference of the container opening. The two sealing lips compensate the forces occurring within the closure in an ideal manner. At the same time, the special construction of the sealing lip allows close contact with the container and compensates for manufacturing errors. The key element of this type of closure is the combination of the special position and angular position of the two sealing lips.

The position of the outer sealing lip is ideal for good reclosure, especially if a diaphragm (safety closure, etc.) is additionally used. The closure according to the invention is basically suitable for use both when the internal pressure of the container is greater or less than atmospheric pressure.

A double sealing lip format can also be used in the lid insert. The insert is injection molded separately from the lid and can be inserted into the lid with sophisticated machinery. Optionally, production may also be carried out using modern combination injection molding methods (injection molding of two plastics in one operation step). This closure type is particularly important with respect to migration of the filling contents.

This type of closure offers many advantages for both plastics processors and the packaging industry: the container opening may have a conventional construction and requires less severe manufacturing errors than a conventional screw-on closure. Previous container structures made of glass can be easily and cost-effectively adapted to this new closure type.

Conventional stamping methods can be used in the manufacture of the lid.

Since this closure type only generates low lateral forces (radial forces) in the closed state, threads can also be used in sampling.

This closure type has a large tolerance for the closure torque build-up in the closure machine and nevertheless presents no functional problems.

The advantage of the invention is that the sealing action is distributed on two different surfaces. This also makes it possible to omit a closing diaphragm. However, a closing diaphragm may also be used, which can rest on or be connected to an end surface surrounding the container opening. Any bonding agent residues remaining after removing the closing diaphragm do not impair the sealing properties of the lid, since the second annular sealing lip ensures an adequate sealing property. The two or sealing lips acting on the container surface provide an increased resistance to the closing process when closing the container, so that damage to the sealing lip during closing is prevented. With two sealing lips acting on different surfaces, it is possible to compensate for manufacturing errors in container and lid, so that there is sufficient pressing force of the sealing lip against the container surface to ensure a tight closure of the lid. is always obtained. Cooperative sealing lips control the pressing force on different sides of the container. Overloading of the sealing lip and thus cracking, fatigue phenomena, etc. is avoided.

[Brief explanation of the drawing]

FIG. 1 is a partial vertical sectional view of one embodiment of a container with a lid according to the invention, FIG. 2 is a partial vertical sectional view of another embodiment, and FIG.
The figure is a partial vertical sectional view of the sixth embodiment. 2.28.46... Container, 4.30.48... Lid, 6
．． 50...Elevated part, 8,52...Inland origin, 10.4
0.58... Container opening, 12, 38.56... End surface, 1411. Container axis, 16, 44, 62..., side,
18. Insert, 20, 36. 54. First seal lip, 22, 42. 60. Second seal lip, 24. Closing diaphragm, 26. Edge, 32. 34. Threaded portion, 64. Edge, 66...Ring chamber.

Claims (1)

[Claims] 1. A container with a lid, the lid being positively and removably connected to the container, and comprising two elastic materials extending around the opening of the container. In the type having a sealing lip adapted to cooperate with the container, the first sealing lip (20, 3
The second The sealing lip (22, 42, 60) is in contact with the side surface (16, 44, 62) of the container at an angle β<90°, and the side surface (16, 44, 62) is in contact with the container axis mc 14 ). The end face (12,
A container with a lid, characterized in that it extends from 38, 56). 2. The first seal lip (20, 54) is aligned with the container axis (14).
) a first sealing lip (36) of a container 6 with a lid according to claim 1, which is inclined outwardly from
are inclined inwardly toward the container axis (14);
A container with a lid according to claim 1. 4. A container with a lid according to claim 1, wherein the second sealing lip (42) is inclined in a direction toward the container opening (40). 5. The second seal lip (22, 60) closes the container opening (10
, 58), the container with a lid according to claim 1, wherein the container is inclined in a direction opposite to the direction toward . 6. Claim 5, wherein the second seal lip (60) forms an angle β=10° to 90° with the side surface (62).
Containers with lids as described in section. 2 Seal lip (20, 22, 36, 42°54.6
2. A container with a lid according to claim 1, wherein the container 0) is arranged in an insert (18) inserted into the lid (4). 8. Lid-handed container according to claim 1, wherein the end faces (12, 38, 56) are arranged perpendicularly to the container axis (14). 9. A container with a lid according to claim 1, wherein the end face (12, 38, 56) is inclined at an angle r other than 90° with respect to the container axis (14). 10. First seal lip (20, 36, 54) and end face (
12, 38, 56) and the container opening (10, 40, 5
8) A container with a lid according to claim 1, in which a closing diaphragm (24) is arranged.