JPH045918Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is a cylindrical container made of several layers of cardboard, with waterproofness on the outer surface, top and bottom, and for storing ammunition, etc. in the container. This container relates to a waterproof paper container which protects the contents from moisture intrusion and which can reduce impact from above and below the container.

[Conventional technology]

As is well known, containers that contain and store contents (for example, explosive substances, etc.) often have to be stored for long periods of time, and due to the large amount of contents, in some cases they may be stored in warehouses, etc. In many cases, containers must be stored, and moving containers is often unavoidable.

[Problem that the invention attempts to solve]

By the way, when a conventional cylindrical container is made by simply wrapping cardboard in layers, when storing the contents, the container itself is not waterproof at all, so the contents inside the container cannot be waterproofed. For example, in the case of explosives, detonation becomes inefficient.

In addition, since the iron lid that connects the lid and the top and bottom of the container body becomes distorted by impact, the impact is transmitted to the contents inside the container, and if the contents are explosive materials such as ammunition, There were problems such as inducing explosions.

The purpose of this invention is to protect the outer surface of the container from moisture, and also to completely seal the space between the container and the iron lid with a synthetic resin lid to block microscopic spaces where moisture can seep. , To provide a paper container that prevents the contents from changing due to external moisture or changes in humidity, and to provide a paper container that protects the contents from external collisions when transporting containers that store the contents, compared to conventional containers. The purpose of the present invention is to provide a paper container that can be protected against the environment.

[Means for solving problems]

In order to achieve the above object, the present invention has a cylindrical paper tube made of several layers of cardboard, with asphalt-coated cardboard, aluminum thin paper, asphalt-coated cardboard, and heat-melting synthetic resin on the inner surface. Construct the container body by sequentially heat-pressing the polyester film or heat-melting synthetic resin to be covered,
A synthetic resin lid is fitted into the outer surface of the iron lid fitted into the lower end of the container body and the iron lid fitted into the upper end of the container body, respectively, and the opening edge of the synthetic resin lid, The outer periphery of the main body and the outer periphery of the iron lid fitting lid are heated and pressed together.

〔Example〕

First, the first embodiment will be explained. Figures 2 and 3 are enlarged sectional views of the upper and lower end portions of the container of the present invention.
In a conventional cylindrical paper tube 21 in which four layers of paper are wound and bonded together, a cardboard 2 coated with asphalt is wound and bonded to the outer surface of the cylindrical paper tube 21. Further, a thin aluminum paper 3 is wound and adhered to the outer surface of the cardboard 2, and a cardboard 4 coated with asphalt is again wound and adhered to the outer surface of the aluminum thin paper 3. Next, a polyester film 5 is coated on both sides with a heat-melting synthetic resin such as polyethylene.
is wound around the outer surface of the cardboard 4 and bonded under heat and pressure.
This constitutes the container body 22 of the present invention.

Reference numeral 23 denotes an iron lid fitting lid that is fitted over the outer periphery of the upper end opening of the container body 22, and this iron lid fitting lid 23 does not have to be multilayered like the container body 22. This is because when the lid 23 and the container body 22 are connected, the contacting portions of the two are naturally overlapped, so that the purpose of waterproofing can be achieved. The outer surface of the lid 23 is formed by heat-pressing a polyester film 24 coated on both sides with a heat-melting synthetic resin, similar to the outer surface of the container body 22. Of course, the lid 23 may be made by heat-pressing the polyester film 24 on the outer surface of the cardboard, which is rolled and overlapped as shown in FIG. The film 24 may be heat-pressed.

As already mentioned, the steel lid bodies 6 and 7 for reinforcement are fitted into the lower ends of the iron lid fitting lid 23 and the container body 22 configured in this way, and a synthetic resin lid is fitted on the outer surface of the iron lid bodies 6 and 7, respectively. The bodies 8 and 9 are fitted, and the upper edge of the opening of the lower synthetic resin lid 8 and the outer peripheral surface of the container body 22 adjacent thereto are heat-pressed, and the lower opening of the upper synthetic resin lid 9 is heated and pressed. The edge and the outer circumferential surface of the iron lid fitting lid 23 adjacent to the edge are heat-pressed.

Note that the contents (not shown) are accommodated in the container body 22, and are incorporated into the container body 22 by fitting the lid 23. However, in this state, the joint between the container body 22 and the lid 23 is not completely sealed, so moisture may seep into this joint. In order to solve this problem, the container body 2
A suture band 10 made of a polyester film coated with synthetic resin is heat-pressed onto the part where 2 and the lid 23 are joined to prevent moisture from entering the inside. The appearance of the inertial state of the container of the present invention is shown in FIG.

In the paper container of the present invention constructed as described above, the outer surface of the cylindrical paper tube 21 is provided with cardboards 2 and 4 coated with asphalt for the purpose of waterproofing, and aluminum thin paper 3 is placed between the cardboards 2 and 4. Since the polyester film 5 whose both sides are coated with a heat-melting synthetic resin is heat-pressed onto the outer surface of the cardboard 4, it not only increases the adhesive force but also has a great water-proofing effect. Yes, depending on the external humidity, the container body 2
Since the interior of the container body 22 is not changed, even if the contents, such as explosives, are stored in the container body 22 for a long period of time, the contents can be well preserved in their original state.
In particular, the upper edge of the opening of the lower synthetic resin lid 8 and the outer peripheral surface of the container body 22 adjacent thereto are heat-pressed, and the lower edge of the opening of the upper synthetic resin lid 9 and the outer peripheral surface of the container body 22 adjacent thereto are bonded by heat and pressure. By heating and press-bonding the outer peripheral surface of the iron lid fitting lid 23, these minute spaces are completely sealed, so that the joint portion can be completely waterproof. Furthermore, even if an impact is applied to the top and bottom of the container body 22 and the lid 23, this impact can be alleviated by the synthetic resin lids 8 and 9, so that the contents inside the container body 22 can be protected from the impact. can be safely protected. Moreover, since the container body 22 is constructed in multiple layers, its strength is increased and the contents can therefore be safely protected from dangers caused by careless handling.

In addition, in the first embodiment, the container body 22
To take out the contents inside, cut out the suture band 10 with a cutting blade (not shown) or the like, separate the iron lid fitting lid 23 from the container body 22, and then remove the contents such as ammunition from the container body 22. Just take it out from inside.

Next, a second embodiment shown in FIGS. 4 to 6 will be described. In this second embodiment, the same reference numerals are used for the same parts as in the first embodiment, and a brief explanation will be provided.

As shown in FIGS. 5 and 6, the cylindrical paper tube 2
cardboard 2 whose outer surface of 1 is coated with asphalt;
Aluminum thin paper 3 and asphalt-covered cardboard 4 are sequentially wound and bonded, and an iron lid 6 is fitted into the lower end of the container body 22. At the same time, after connecting the lid 23 into which the iron lid 7 is fitted to the upper end opening of the container body 22, the heat-melting synthetic resin 1
1 are integrally heat-pressed.

Next, the coating layer of the synthetic resin 11 is cut between the container body 22 and the iron lid fitting lid 23 using a cutting blade or the like (not shown). that way,
The container body 22 and the iron lid fitting lid 23 are separated, and the contents can be housed in the container body 22.

Note that synthetic resin lids 8 and 9 that cover the iron lids 6 and 7 are fitted into the lower end of the container body 22 and the upper end of the lid 23, respectively, and the opening edge of these lids
Heat and pressure bonding is performed as in the example. The contents are housed in the container body 22 and sealed by covering the joint between the container body 22 and the iron lid fitting lid 23 with the suture band 10 as in the first embodiment.

In this second embodiment, the minute spaces between the container body 22 and the iron lid 6 and between the lid 23 and the iron lid 7 are sealed by heat-pressing with the heat-fusible synthetic resin 11. Furthermore, a waterproof effect can be expected.

[Effect of idea]

The waterproof paper container of the present invention has a multi-layered container body, and is completely sealed against the weak parts of the joints where the container body and lid are joined, so that the contents contained within the container can be sealed. can be safely protected from external moisture or humidity changes,
The synthetic resin lid cushions external shocks, allowing the contents to remain intact even after long-term storage.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a paper container according to the first embodiment of the present invention, Figs. 2 and 3 are enlarged cross-sectional views of the upper and lower ends of the same container, and Fig. 4 is a perspective view of the paper container according to the present invention. A perspective view of the paper container according to the second embodiment, and FIGS. 5 and 6 are sectional views of essential parts showing enlarged upper and lower end portions of the container. 1... Cardboard, 2, 4... Asphalt-coated cardboard, 3... Aluminum thin paper, 5... Polyester film, 6, 7... Iron lid, 8, 9... Synthetic resin lid, 11... Heat-melting synthetic resin, 21
... Cylindrical paper tube, 22 ... Container body, 23 ... Iron lid fitting lid.

Claims (1)

[Claims for Utility Model Registration] (1) Using a cylindrical paper tube 21 in which cardboard 1 is stacked several times, cardboard 2 covered with asphalt is adhered to the outer surface of this cylindrical paper tube 21, and the outer surface of the cylindrical paper tube 21 is bonded with asphalt. A thin aluminum paper 3 and a cardboard 4 coated with asphalt are adhered to the surface, and a polyester film 5 or a thermofusible synthetic resin 11 is heat-pressed to the outer surface of the asphalt-coated cardboard 4 to coat both sides with a thermofusible synthetic resin. The container body 22 is constructed by inserting iron lids 6 and 7 into the lower end of the container body 22 and the iron lid fitting lid 23, respectively.The outer surfaces of these iron lids 6 and 7 are made of synthetic resin. The lids 8 and 9 are fitted, and the upper edge of the opening of the lower synthetic resin lid 8 and the outer peripheral surface of the container body 22 adjacent thereto are bonded by heat and pressure, and the opening of the upper synthetic resin lid 9 is closed. A waterproof paper container made by heat-pressing the lower edge and the outer circumferential surface of the iron lid fitting lid 23 adjacent thereto. (2) A utility model registration request characterized in that the container body 22 and the iron lid 6 and the iron lid fitting lid 23 and the iron lid 7 are each integrally joined with a heat-melting synthetic resin 11. A waterproof paper container according to scope 1.