JPH0424838Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to paper cans and is used in the industrial field of packaging cans.

(Prior Art) So-called paper cans having a can body made of paper as a base material are conventionally known. The end of the can body of this type of paper can is closed with a synthetic resin cover, and with metal foil such as aluminum or synthetic resin film stretched over the end of the can body. be.

(Problem to be solved by the invention) In the conventional technology described above, paper cans that are covered with lids can be opened and closed repeatedly, but it is difficult to ensure airtightness when closing the lid, and it is difficult to tamper with the paper cans. There was a problem in that it was not possible to check whether it was opened.

On the other hand, those covered with metal foil or synthetic resin film can ensure airtightness and prevent unauthorized opening, but once opened, they cannot be resealed and cannot be opened and closed repeatedly. There was a problem in that a high level of skill was required to apply the foil or synthetic resin film.

(Means for Solving the Problem) However, this invention provides a hooking means for the synthetic resin ring at the upper end of the can body and the cover lid, and also provides a hooking claw for hooking the synthetic resin ring to the lower edge of the cover cover. The above-mentioned problem was solved because the provided resection zones were continuous.

That is, in this invention, a synthetic resin ring is fitted to the upper end of the can body, which is made of paper as a base material, and a synthetic resin cover is placed on the outside of the synthetic resin ring. A hooking means is provided on the ring and the cover, and an annular resection band is connected to the lower side of the hanging edge of the cover via a score,
It is characterized in that a hook protruding from the inner surface of the resection band is hooked to the synthetic resin ring.

The can body may be made of only paper material, or may be made of paper material laminated with synthetic resin films such as heat-fusible resin on the front and back surfaces. The synthetic resin ring is fixed to such a can body using an adhesive or heat welding.

In this case, the upper end of the can body may remain cylindrical, but if the part where the synthetic resin ring is fitted is bent inward or outward and the synthetic resin ring is fitted to that part, the synthetic resin ring The can body can be hooked to improve the fitting strength.

A plurality of hooking claws of the resection band are provided,
The number of cans should be determined by considering the diameter of the can, and they should be arranged at equal intervals. Alternatively, it may be a continuous protrusion.

The means for engaging the synthetic resin ring and the cover may be constituted by an annular step provided on the synthetic resin ring and an annular protrusion provided on the cover.

(Function) According to this paper can, unless the excision zone is removed, the hook provided on the excision zone is hooked to the synthetic resin ring fitted to the upper end of the can body, so that the opening of the can is prevented. can be prevented. Therefore, the presence or absence of an abnormal opening can also be determined from the condition of the resection zone.

After cutting off the resection band, it can be opened and closed repeatedly by using the latching means of the cover and the synthetic resin ring. In the closed state, the synthetic resin cover comes into contact with the synthetic resin ring, so that a certain degree of airtightness can be ensured.

(Example) An example of this invention will be described below with reference to the drawings.

In FIG. 1, 1 is a paper can body. A synthetic resin ring 3 having an annular groove 2 on the lower side is fitted into the upper end of the can body 1 and is fixed to the can body 1 with an adhesive. The synthetic resin ring 3 has an upper part having a larger diameter than a lower part, and an annular step part 4 is formed in the middle part of the outer wall.

The upper end of the can body as described above is covered with a cover 5 made of synthetic resin (either transparent or opaque). The cover lid 5 is provided with an annular protrusion 6 on the inside of the hanging wall 5a that engages with the annular step 4, and an annular excision band 7 is provided on the underside of the hanging wall 5a with a score 8 interposed therebetween. They are installed consecutively. Although the figure shows the case where score 8 is provided on the inner surface, the score may be provided on the outer surface. As shown in FIG. 2, the resection band 7 is formed discontinuously on one side, and a knob 9 is provided at one end. Further, a plurality of hooking claws 10, 10 are provided at equal intervals on the inner surface of the resection band 7, and the hooking claws 10, 10 are respectively hooked on the outer lower edge of the synthetic resin ring 3. I've let it happen.

In the paper can of the above embodiment, the hooks 10, 10 provided on the excision zone 7 are engaged with the lower edge of the synthetic resin ring 3 fitted to the can body 1, so the cover 5 is attached to the excision zone. It cannot be removed unless 7 is removed. Therefore, it is possible to prevent unauthorized opening, and it is also possible to check whether or not unauthorized opening has occurred.

The resection band 7 is removed by pinching the tab 9 and tearing the resection band 7 along the score 8. After the resection zone 7 is excised, the cover 5 can be repeatedly covered by using the engagement between the annular protrusion 6 provided on the hanging wall 5a and the annular step 4 of the synthetic resin ring 3, so that the lid 5 can be repeatedly opened and closed. be able to.

4 to 6 show other embodiments of the fitted state of the can body 1 and the synthetic resin ring 3. FIG. FIG. 5 shows the case where the upper end portion 1a is wound inward, and FIG. 6 shows the case where the upper end portion 1a is wound inward about one turn. The annular groove 2 provided in the synthetic resin ring 3 is formed in the can body 1, respectively.
The shape of the can body 1 and the synthetic resin ring 3 are made to match the shape of the upper end portion 1a of the can body 1, so that the can body 1 and the synthetic resin ring 3 can be fixed together with an adhesive or the like, and can also be latched, thereby improving the strength of the fitting.

The hooking claws 10, 10 provided on the resection band 7 are not only hooked onto the lower edge of the synthetic resin ring 3 as described above, but also provided with a separate stepped portion such as the annular stepped portion 4 on the synthetic resin ring 3. , it may be hung on this. In addition, the above-mentioned score 8 is obtained when a V-groove is provided on the cap 5 which is integrally molded with the resection band 7, and when the resection band 7 is provided through a thin part during molding of the cover 5 and the thin part is formed. There are cases where the score is 8.

(Effects of the invention) As explained above, according to this invention, a cutting strip is continuously provided on the hanging wall of the cover, and the latch claw provided on the cutting strip is attached to a synthetic resin ring fitted to the can body. Since it is latched, unauthorized opening can be prevented, and since latching means are provided on the synthetic resin ring and cover lid,
This has the effect of providing a paper can that can be opened and closed repeatedly.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of this invention, FIG. 2 is a partially cutaway perspective view of the cover, and FIG. 3 is a partially cross-sectional view of the cover. 4 to 6 are partial sectional views of the upper end portion of the can body of another embodiment of this invention. 1...Can body, 3...Synthetic resin ring, 5...Cover lid, 7...Resection band, 8...Score, 10...Latching claw.

Claims (1)

[Claims for Utility Model Registration] 1. A synthetic resin ring is fitted to the upper end of a can body made of paper, and a synthetic resin cover is placed on the outside of the synthetic resin ring. , the synthetic resin ring and the cover are provided with a hooking means, and a ring-shaped resection band is connected to the lower side of the hanging edge of the cover via a score, and the inner part of the resection band is A paper can characterized in that a hook protruding from the side surface is hooked to the synthetic resin ring. 2. The paper can according to claim 1, wherein the synthetic resin ring is adhesively or thermally bonded to the upper end of the can body. 3. The paper can according to claim 1, wherein the upper end of the can body is bent inwardly or outwardly. 4. The paper can according to claim 1 of the utility model registration claim, wherein the excision band has a plurality of retaining claws arranged at equal intervals.