JPH0826312A - Lid of opened can - Google Patents

Abstract

PURPOSE:To obtain a lid used for reserving drink remaining in an opened can in a sanitary and safe manner. CONSTITUTION:In a lid mounted on an open part of a can to cover an opening, a ring leg part that can be fitted to seamed parts of cans of a plurality of apertures, a projected channel 3 a part of which is missed is provided on the can-contact end of the leg part, and a tongue piece 4 is provided on the outer periphery of the ring leg part 2 so that the outer shape of the lid has a waterdrop form as a whole. In this manner, the lid can be of course used as a lid for cans of different apertures with drink remaining therein, and the lid is never blown off if an internal pressure is increased in the state that the can is covered with the lid. In addition, the tongue piece 4 can be also used for erecting a tab.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid used for hygienically and safely storing a leftover beverage in a can once opened.

[0002]

2. Description of the Related Art Conventionally, as a device relating to an opened canned beverage lid, there is one disclosed in Japanese Utility Model Laid-Open No. 5-46755. In this invention, a plurality of annular legs are provided so that they can be used for cans having different diameters, and the winding tightening portion of the can is fitted together with the peripheral frame portion. Further, in this invention, a projecting piece is provided on the outer peripheral portion of the lid so that it can be used for hanging on the hook.

[0003]

In the conventional lid of a can, in order to make it difficult to remove the lid, the winding portion is pressed from inside and outside by utilizing the elasticity of the lid material. However, in the case of beverages that generate carbon dioxide gas in particular, a large amount of gas is generated at the time of overturning or heating, which may even blow off the lid of the can. An object of the present invention is to provide a lid for a can whose lid does not blow off even in such a case.

[0004]

The lid of the can of the present invention is designed to gradually dissipate gas such as air, water vapor, carbon dioxide, etc. when the gas pressure in the lid becomes large. In the structure of the lid of the can, the top plate portion 1, the annular leg 2, and the tongue-shaped piece 4 are used. In addition, a protrusion groove 3 is provided on the can contact side at the end opposite to the top plate of the annular leg for tightening the can tightening part 6 so that a part of the groove 3 is missing to enhance the fixing force of the lid and to reduce the gas pressure. I try to help the gas escape from the partial circumference when it gets higher. Further, a tongue-shaped piece is provided on the outer circumference of the annular leg so that it can be used to prevent rolling or to raise the tab when falling.

Materials used for the lid of the present invention include:
Synthetic rubber and synthetic resin, which are called elastomer and have rubber-like elasticity at around room temperature, are used. Examples thereof include synthetic resins such as polyethylene, polypropylene, vinyl chloride and polyisobutylene.

The projecting groove provided on the can contact side of the annular leg is hooked on the winding portion of the can, and prevents the lid of the can from coming off from the can body. Further, the missing portion of the projection groove can release air, water vapor, carbon dioxide gas and the like from this portion when the pressure inside the lid of the can becomes high. One or more missing portions of the protrusion groove are provided. When this lid is viewed two-dimensionally, if there are multiple gaps at equal intervals, the pressure inside the lid will be applied evenly to the lid, and uneven distribution causes a sudden pressure generation in the lid. Sometimes the lid doesn't blow off.

When the missing portion of the projection groove is formed in one place, it is preferable to provide it on the side opposite to the tongue-shaped piece. In this position, when the can falls, the rolling will stop below the tongue, but at that time the missing part will be located almost above and the missing part will not be blocked by the drink, Escape is easy. The length of the missing portion at this time is 10 to 25.
It is good to use mm. If it is less than 10 mm, it does not help the escape of gas, and it becomes a lid that seals without any change from when there is no missing part. On the contrary, if the size of the missing portion is larger than 25 mm, the gas can be easily dissipated, but the fixing force of the lid to the can becomes small and the lid is likely to come off.

[0008] When a plurality of missing portions of the projection groove are provided, the escape of gas is facilitated, but there is a risk of the beverage in the can leaking out. Therefore, in this case, it is preferable to provide a small protrusion groove in the missing portion of the protrusion groove. The size of the small protrusion groove is smaller than that of the protrusion groove. In terms of the size of the protrusion, the small protrusion is one-fifth to one-fifth the size of a normal protrusion and the height of a mountain. By the way, 0.2mm to 0.5mm
It is provided according to the size of. Due to the presence of the small protrusion grooves, the beverage can be prevented from leaking out of the can as the fixing force of the lid to the can is increased. The addition of the small protrusion groove can be used even when there is only one missing portion.

The lid of the opening can of the present invention will be described below with reference to the drawings. FIG. 1 is a bottom view showing an embodiment of the present invention. FIG. 2 is a sectional view taken along the line AA in the embodiment of FIG. FIG. 3 is a cross-sectional view of essential parts when the product of the invention is actually used in a can 5 having a small diameter. FIG. 4 is an external perspective view of the embodiment.

In the lid of the embodiment, the top plate portion 1 has two stages so that the length of the annular leg 2 and the position of the projection groove 3 are different. Further, a protrusion groove is provided at the lower end of the annular leg on the can contact side, but the protrusion groove is not provided for a length of about 20 mm. A tongue-shaped piece 4 is provided on the outer circumference of the annular leg, and ribs 7 are provided for reinforcement to prevent bending when the tab is opened.

In this embodiment, the positions of the projection grooves provided on the two inner and outer annular legs are different from each other, so that the annular legs are bent when the can tightening portion is fitted inside the annular legs. It does not hinder the fitting of the can.

The material of the lid was made of polyethylene, and the thickness of the thin portion was 1.0 mm. The outer diameter of the outer ring leg is 62 mm. The inner diameter of the inner annular leg was 52 mm (excluding the projection groove), and the thickness of the lid was 9 mm. The protrusion groove on the can contact side of the annular leg has a substantially trapezoidal cross section with a height of 1.1 mm and a flat top width of 0.7 mm.

In Example 2, a lid of an opening can was prepared in which a plurality of missing portions of the projection groove were provided. FIG. 5 shows a vertical cross-sectional view of this lid, and FIG. 6 shows a cross-sectional view taken along line BB in the vertical cross-sectional view of FIG.
The cross-sectional view in which the protrusion groove on the outer side of the annular leg is sliced is shown so that the position of the missing portion of the protrusion groove can be seen. FIG. 7 is a partially enlarged perspective view of the small protrusion groove portion for showing the small protrusion groove 8 provided in the missing portion of the protrusion groove.

The second embodiment is an example in which four missing portions of the projection groove are provided. Then, as a rough dimension, trapezoidal projection grooves having an upper bottom of 1 mm, a lower bottom of 3 mm, and a height of 1 mm were provided on the can contacting side of the annular leg at about 2 cm at four equal intervals. The appearance of FIG. 7 is shown in the missing portion of the projection groove. The cross section shows a trapezoid. A small protrusion groove having an upper bottom of 1 mm, a lower bottom of 1.5 mm, and a height of 0.3 mm was provided. The material of the lid was made of polyethylene.

FIG. 8 is an enlarged external perspective view showing another example of the shape of the small projection groove. The external cross section of this small protrusion groove is formed by cutting out a part of a circle.

[0016]

EFFECT OF THE INVENTION The lid of the can of the present invention can be sanitarily stored by capping the beverage once opened without spilling. Of course, by providing a plurality of annular legs, it can be used for cans of different diameters. Also,
A protrusion groove is provided to make it difficult to remove the lid, but in the part where the protrusion groove is omitted, the gas generated from the carbonated drink or the steam pressure etc. when placed at high temperature must be dissipated. This makes it possible to prevent the beverage from leaking from the can even if the can falls over.

Further, various printings may be applied to the top plate portion, so that the top plate portion can be used as an advertising medium in addition to the practical effect.

[Brief description of drawings]

FIG. 1 is a bottom view showing an example.

2 is a sectional view taken along the line AA of the embodiment of FIG.

FIG. 3 is a cross-sectional view of a main part when the embodiment is used for a small diameter can.

FIG. 4 shows an external perspective view of the embodiment.

FIG. 5 shows a vertical sectional view of a second embodiment.

6 is a cross-sectional view taken along the line BB of FIG.

FIG. 7 is a partially enlarged perspective view showing a small protrusion groove provided in a protrusion groove missing portion in the second embodiment.

FIG. 8 is a partial perspective view showing an example of another small protrusion groove.

[Explanation of symbols]

 1 Top Plate 2 Annular Leg 3 Projection Groove 4 Tongue Piece 5 Can 6 Winding Clamp 7 Rib 8 Small Projection Groove

Claims (4)

[Claims] 1. A lid attached to an opening of a can so as to cover the opening has an annular leg that can be fitted to a top plate and a winding portion of a plurality of types of cans having different diameters. , A protrusion groove was formed on the can contact side of the end opposite to the top plate of the annular leg so that a part of the annular groove was missing, and a tongue-shaped piece was formed on the outer periphery of the annular leg so that the outer shape of the entire lid was in the form of water droplets. A lid for an open can, which is characterized in that 2. The lid of an opening can according to claim 1, wherein the protruding groove has one missing portion and the missing length is 10 to 25 mm. 3. The lid for an unsealing can according to claim 1, wherein the missing portion of the projection groove is not flat and is a small projection groove smaller than the projection of the projection groove. 4. The lid for an unsealing can according to claim 1, wherein the length of the annular leg differs depending on the diameter of the can, and the protrusion of the protrusion groove is provided at a position different from that of the top plate.