JPS6129638Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention improves the airtightness of the can and
This invention relates to an airtight can whose purpose is to prevent light from passing into the can.

Conventionally, airtight cans in which a synthetic resin ring is fitted into the can mouth are known, but since the structure achieves airtightness only by the contact between the synthetic resin ring and the can body wall,
In some cases, sufficient airtightness could not be obtained due to deformation of the synthetic resin ring. Furthermore, when the synthetic resin ring is made transparent or translucent, there is a risk that light rays may be transmitted into the can and have an adverse effect on the contents.

However, in this invention, the lid is constructed by winding and fixing the edge of a metal top plate to the lower edge of the inner wall of a synthetic resin ring that has a groove for fitting into the can opening, and the lower side of the winding is fixed to the lower edge of the inner wall of the synthetic resin ring. Since the presser ring was brought into contact with the upper side of the periphery of the partition plate, the can opening was doubled due to the contact between the synthetic resin ring and the can body wall and the contact between the winding part and the presser ring. In addition to improving airtightness, the metal top plate and retainer ring reliably block the transmission of light into the can.

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

A synthetic resin partition plate 2 is stretched over the mouth of the can body 1, and a presser ring 3 is in contact with the upper surface of the periphery of the partition plate 2 in order to tension the partition plate 2. The fitting groove 6 of the lid 4 is tightly fitted into the mouth of the can body 1 (the end of the can body 5). The lid 4
The lower edge of the circumferential wall of a metal top plate 9 formed in a cap shape is wound and fixed to the lower edge of the inner wall 8 of a fitting groove of a transparent synthetic resin ring 7 having a fitting groove 6 to the end of the can body 5. The lower end of the winding portion 10 is connected to the presser ring 3.
It is in contact with the upper side of.

The presser ring 3 is secured to the end of the can body 5 together with the partition plate, and the inner side of the outer wall 12 of the synthetic resin ring 7 is connected to the seam part 10.
The thick hooking portion 11 at the lower end is hooked onto the lower end of the winding portion 13.

According to the above embodiment, since the fitting groove 6 of the synthetic resin ring 7 of the lid is tightly fitted into the seaming part 13 of the can body 5, a predetermined airtightness can be obtained in this part, and the metal Since the winding portion 10 of the top plate and the presser ring 3 are brought into contact with each other, a predetermined airtightness can also be obtained at this portion. As a result, air circulation can be blocked doubly, and airtightness can be improved. Also, synthetic resin ring 7
Even if it is deformed, a predetermined airtightness is ensured by the contact between the winding portion 10 and the presser ring 3. Furthermore, since the winding portion 10 and the presser ring 3 are brought into contact with each other, the entire upper part of the partition plate 2 is covered with a metal plate when the lid is covered. Even when the synthetic resin ring 7 is made transparent or translucent, there is no risk of light rays passing into the can, and deterioration of the contents can be prevented.

Note that the metal top plate does not necessarily have to be cap-shaped. Further, it is not essential that the presser ring 3 be brought into contact with the periphery of the partition plate.

That is, according to this invention, the lid is constructed by winding and fixing a metal top plate to the lower edge of the inner wall of a synthetic resin ring having a groove for fitting into the end of the can body, and the winding portion is brought into contact with the retainer ring. Since the air passage was
It can be blocked at certain points, providing high airtightness, and has the effect of preventing light from passing through.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of this device, FIG. 2 is a partially sectional front view of the lid, and FIG. 3 is a plan view. 1... Can body, 2... Inner partition plate, 3... Holding ring, 4... Lid, 5... Can body, 6... Fitting groove, 7
...Synthetic resin ring, 9...Metal top plate, 10...
Winding section.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A can in which a lid is tightly fitted to the mouth of a can body with a partition plate, the lid having a groove for fitting a synthetic resin ring into the mouth of the can. The edge of the metal top plate is wound and fixed to the lower edge of the inner wall, and the bent portion of the lower end of the inner wall of the fitting groove is brought into contact with the upper side of a presser ring, and one side of the presser ring is connected to the can opening. An airtight can that is fixed to the partition plate and extended to the peripheral edge of the partition plate. 2. The airtight can as set forth in claim 1 of the utility model registration claim, in which the synthetic resin ring is transparent or translucent.