JPS6217398Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a can for highly viscous substances whose mouth is highly airtight and whose purpose is to facilitate removal of the lid.

The applicant previously proposed a can for high viscosity substances in which the opening of the can body is double-walled and the annular fitting groove of the lid is tightly fitted into the opening, but such a structure ensures high airtightness. However, it was difficult to remove the lid. Furthermore, it has been known that the mouth of the can body is bent outward to provide a reinforcing protrusion 20 so that the can can be opened using an instrument such as a screwdriver.
In this case, there was a problem that contents such as ink got into the inner side 21 of the bent part and was difficult to take out.

The can for highly viscous substances of this invention is a can in which a cap-shaped lid is tightly fitted to the mouth of the can body, and the periphery of the mouth of the can body is bent outward and downward to form a double wall part,
A curled portion is provided at the lower peripheral edge of the lid, and the inner side of the curled portion is engaged with an annular groove formed in the double wall portion, and a curled portion formed on the curled portion of the lid and the lower edge of the double wall. A gap is formed between the outer curl and the cover into which the opening piece can be inserted.

With the above configuration, an opening piece such as a screwdriver is inserted into the gap between the curled part of the lid and the curled part of the double wall, and the base of the opening piece is pushed down using the upper side of the curled part of the double wall as a fulcrum. This allows the lid to be opened easily. Moreover, the airtightness of the can is improved by the engagement between the lid and the can body.

This invention will be explained below based on embodiments shown in the drawings.

A tapered can body 1 has a small diameter on the bottom plate side and a large diameter on the mouth side, and the mouth peripheral edge of the can body 1 is bent outward by approximately 180 degrees to form a double wall portion 2 having a small gap. The lower part of the double wall part 2 is bent outward to form a curl part 3, and a groove 4 having an arcuate cross section is formed in an annular shape as a catch part at approximately the center of the upper and lower parts.

In the figure, reference numeral 5 denotes a cap-shaped lid, and an annular fitting groove 6 provided on the outer periphery of the lower surface of the lid 5 tightly fits into the mouth of the can body 1. A packing 7 is attached to the top to make the part airtight. Further, the lower part of the peripheral wall 8 of the lid 5 is bent outward (or inward) to form a curled part 9, and the inner side 9a of the curled part 9 slightly protrudes into the inside of the can body 1. A hooking portion is formed and is fitted and hooked into the groove 4 of the can body 1. Further, a slight gap S is provided between the upper side of the curled part 3 of the can body 1 and the lower side of the curled part 9 of the lid 5 so that an opening piece can be inserted therein. In the figure, reference numeral 10 denotes a latching protrusion protruding from the top surface of the lid 5, so that it can be latched to the outer circumference of the bottom of the can body 1 when the lower end of the can body 1 is stacked on the lid 5. be.

In the can shown in the above embodiment, after the can body 1 is filled with contents (for example, printing ink), the pressure is reduced (for example,
400mHg to 500mHg), the lid 5 is placed inside the vacuum chamber, and the concave groove 4 of the can body
and the inside of the curled portion 9a of the lid are fitted and locked, and the upper edge of the opening of the can body 1 is in close contact with the packing 7 attached to the lid 5, so the lid 5 is tightly fitted to the can body 1, The inside of the can is sealed. Due to the engagement and engagement between the groove 4 and the inner side of the curled portion 9a, it is possible to prevent the lid from accidentally coming off.

In the above embodiment, in order to remove the lid, the concave groove 4
By inserting the tip of the opening piece 11 that serves as a screwdriver or other screw between the inside of the curled part 9a and pushing down the base, the tip of the opening piece 11 can be moved to the third position using the upper side of the curled part 3 as a fulcrum. By rotating the lid 5 in the direction of arrow 12 in the figure, the lid 5 is pushed upward and can be opened easily.

In the above embodiment, since the fitting groove 6 of the lid is tightly fitted into the mouth of the can body, the contact area between the mouth of the can body 1 and the lid 5 is increased, and higher airtightness can be obtained. However, it is not necessary to provide the fitting groove 6, and as shown in FIG. 4, a packing fitting groove 13 may be provided on the outer periphery of the lid 5, and the packing 7 may be fitted into the fitting groove 13. Furthermore, if the cover paper 14 is placed over the top surface of the contents as shown by the chain line in FIG. 1, the packing 7 is not necessary. In addition, since a latching protrusion 10 is provided on the top surface of the lid 5 to connect with the bottom,
Multiple cans can be stably placed, and since the can body is tapered, multiple empty cans can be inserted one after another and stored in a small volume. However, the can body is not limited to a tapered shape, and the top surface of the lid The latching ridge is not an essential requirement.

Next, in the embodiment shown in FIG. 5, the lower part of the double wall part 2 of the can body 1 is bent outward at 90 degrees, and the end thereof is bent upward to form a curled part 16. . According to this embodiment, by rotating the opening piece 11 in the direction of arrow 17 using the upper side of the curled portion 16 as a fulcrum, the lid 5 can be easily opened and removed.

That is, according to this invention, the opening of the can body is made of a double wall, and the lid of the can is tightly fitted into the double wall, and the can lid is wrapped around the can lid and the lower edge of the double wall is rolled. Since a small gap is provided between the lid and the lid, high airtightness can be obtained, and the lid can be opened easily using an appropriate tool. In addition, the lower part of the peripheral wall of the lid is bent outward to form a curled part, which prevents the lid from deforming when opening the can, and the curled part is hooked to the double wall, so it can be hung with only a small amount of deformation. It is convenient for applying a lever action using an instrument.

Furthermore, since an outer curl is provided at the bottom of the double wall portion of the can body, when opening the lid, the opening piece can act using the outer curl as a fulcrum, and the lid can be opened with a relatively small force. . Further, the outer curl portion makes it difficult for the double wall portion to deform. Therefore, when the lid is attached, the double wall portion exerts a large restoring force in the outward direction, increasing the clamping force between the lid and the can body, and improving airtightness.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of this invention, Fig. 2 is a partially enlarged sectional view when the lid is removed, Fig. 3 is a partially enlarged sectional view, and Fig. 4 is an embodiment without a fitting groove. FIG. 5 is a partially enlarged sectional view of another embodiment, and FIG. 6 is a partially enlarged sectional view of the conventional example. 1... Can body, 2... Double wall portion, 3, 9... Curl portion, 4... Concave groove, 5... Lid, 7... Packing, 15... Projection.

Claims (1)

[Claims for Utility Model Registration] 1. A can in which a cap-shaped lid is tightly fitted to the mouth of a can body, and the periphery of the mouth of the can body is bent outward and downward to form a double wall. In addition, a curled portion is provided at the lower peripheral edge of the lid, and the inner side of the curled portion is engaged with an annular groove formed in the double wall portion, and the lower edge of the double wall portion A can for highly viscous substances, wherein an outer curled portion is formed at the top, and a gap is formed between the curled portion and the curled portion of the lid into which an opening piece can be inserted. 2. The can for highly viscous substances according to claim 1, wherein the curled portion of the double wall portion extends outward from the curled portion of the lid.