JPH0513932U - Container base - Google Patents

Abstract

(57) [Summary] [Purpose] This is the base of a metal container. Provide a base that does not cause rust. [Structure] The synthetic resin body 2 is provided inside the metal base body 1.
The base 3 is formed by fitting (for example, polyester). The edge 1b of the base body 1 is covered with the folded portion 9 of the synthetic resin body 2 to protect the edge 1a from rusting. The lower end edge portion 8 of the synthetic resin body 2 is wound around the base portion 1 and the metal container body 11 around the can end portion of the can body, and the watertightness and airtightness of the end portion are improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a base of a metal container (for example, a round can, a square can, an 18-liter can, etc.).

[0002]

[Prior Art]

 Conventionally, a metal container adapted to contain a liquid is provided with a base on one side of the container for forming a spout, and a screw lid or other cap is detachably attached to the base.

The base is connected to one end of a cylindrical metal container in an inverted conical shape, or to an opening provided on one side of a top plate of a metal container such as an 18-liter can. Some of them have a short cylindrical shape.

[0004] These bases are wound and connected at the end together with the end of the metal container and the edge of the opening provided on the top plate, and the airtightness and watertightness of the connection are secured. Has been done.

In the metal container provided with the above-mentioned mouthpiece, when the liquid to be contained in the container is a liquid having a property of corroding the metal (usually an iron plate) forming the metal container (for example, alcohol-based liquid) It is necessary to protect the inner wall of the container body and the inner wall of the base, such as a fragrance using a liquid as a solvent. Generally, a metal plate coated with a chemical resistant paint by baking or a metal plate coated with a synthetic resin film is used. Thus, the container body and the base are molded.

[0006]

[Problems to be solved by the device]

 When the die is molded using a metal plate coated with a chemical resistant paint by baking, or a metal plate coated with a chemical resistant synthetic resin film, the baked coating film or synthetic resin film is molded. Sometimes there were problems such as scratches and peeling.

When the protective film such as the baking coating film or the synthetic resin film is scratched or peeled off, the metal plate is eroded by the content liquid from that part, which causes rusting.

[0008]

[Means for solving the problem]

 The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a mouthpiece of a container without fear of rusting.

The mouthpiece of the container of the present invention which achieves the above-mentioned object is characterized in that a synthetic resin body having a shape similar to the mouthpiece body is fitted inside the mouthpiece body.

The shape of the base body and the synthetic resin body may be any shape as long as it can be formed, for example, an inverted conical shape or a cylindrical shape.

When the cap fitting portion side edge of the mouthpiece body is formed with a folded-back portion on the edge portion of the synthetic resin body and is covered with this edge-folded portion, the edge of the mouthpiece body is completely covered. Therefore, the effect of preventing rusting can be improved.

Further, when the edge of the synthetic resin body is substantially aligned with the metal container connecting edge portion of the mouthpiece body, the edge portion of the synthetic resin body is caught in the joint portion formed by winding the container body and the mouthpiece, and the watertightness It is advantageous for improving airtightness. Another packing material may be inserted in the winding portion.

As the material of the synthetic resin body, polyester, vinyl chloride, polyethylene, and other synthetic resins are used. The material is selected according to the properties of the liquid contained in the metal container.

[0014]

[Action]

 According to the mouthpiece of the container of the present invention, the synthetic resin body fitted inside completely covers the inner surface of the mouthpiece main body and can prevent erosion by the liquid.

The base body and the synthetic resin body can be separately molded and assembled, a synthetic resin body can be formed without damage, and the inside of the base body can be completely protected.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In the embodiment shown in FIG. 1, a synthetic resin body 2 made of polyester resin, which is also shaped like an inverted cone, is fitted inside a metal base body 1 made of an inverted cone and made of metal. The base 3 of the container is constructed. The base body 1 and the synthetic resin body 2 are formed so that the side walls 1a and 2a are in close contact with each other, but there is no problem even if there is a gap between both side walls.

In the figure, reference numeral 4 denotes a spout of the base body 1, which is provided with a thread 5 to be screwed with the cap. Further, 6 is a winding edge for connecting with the container body.

FIG. 2 shows a diagram for explaining the molding and fitting of the synthetic resin body 2. That is, the synthetic resin body 2 is first molded into an inverted conical shape as shown in (a). The height H of the synthetic resin body 2 is made higher than the height of the base body 1, and a toped cylinder portion 7 to be fitted into the spout 4 of the base body 1 is provided on the upper side. The lower side is flared and has an edge 8 having a size substantially overlapping the winding edge 6 of the base body 1. Next, as shown in (b), the top plate of the capped tubular portion 7 is cut off, and then the synthetic resin body 2 is fitted inside the base body 1 as shown in (c). The end edge portion 7a of the topped cylindrical portion 7 projects outward from the spout 4 of the base body 1. Therefore, the end edge portion 7a is folded back to the outside as shown in FIG. 1, and the folding back portion 9 covers the end edge 1b of the base body 1.

FIG. 3 shows a metal container 10 configured by using the container base 3 of the embodiment. The can body edge of the metal container body 11 and the winding edge 6 of the mouthpiece body 1 are wound to form a connecting portion 12. As shown in FIG. 4, the end portion 8 of the synthetic resin body 2 is wound in the connecting portion 12 to improve the airtightness and watertightness of the winding, and at the same time, lower the synthetic resin body 2. Is fixed.

As shown in FIG. 5, an inner plug 13 having a bottomed cylinder with a flange is fitted inside the spout 4, and the outer screw thread 5 is screwed with a cap 14 having a cylindrical top. Are combined.

If the inner surface of the can body 11a and the bottom plate (not shown) of the metal container body 11 is a baking surface coated with a chemical resistant paint or a synthetic resin coating surface, the overall chemical resistance The metal container 10 of FIG. The inner surface of the mouthpiece body 1 that constitutes the mouthpiece 3 is completely covered with the synthetic resin body 2 fitted inside, so that it is possible to prevent erosion by the content liquid. The inner surface of the can body 11a and / or the bottom plate may be covered with a synthetic resin cover like the cap, instead of the coating surface.

FIG. 6 shows a state in which the cap 21 of an 18-liter can is used.

The mouthpiece 21 is configured by fitting a tubular synthetic resin body 23 into a tubular mouthpiece body 22. Although the shape is different from that of the above-mentioned embodiment, the structure is almost the same. That is, the edge 22 b of the base body 22 is covered with the folded portion 24 of the synthetic resin body 23. Further, the edge of the synthetic resin body 23 is wound on the connecting portion 26 formed by winding the base body 22 and the top plate 25 on the container body side. The cap 27 has a cylindrical shape with a top and a plurality of cuts 29 formed in the side wall 28. When the top plate 30 is recessed, the side wall 28 expands.

In this embodiment as well, the inner surface of the mouthpiece main body 22 can be completely covered with the synthetic resin body 23 in the same manner as in the above-mentioned embodiment, and the erosion by the content liquid can be prevented.

[0026]

As described above, according to the present invention, since the inside of the mouthpiece main body is covered with the synthetic resin body, it is not corroded by the content liquid of the container, and therefore, there is a possibility of rusting. There is an effect that can provide the base of the container that does not exist. Further, since the base body and the synthetic resin body are separately molded, there is an effect that the shape can be freely selected without considering damage to the protective film.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

2A and 2B are views for explaining molding and fitting of the synthetic resin body of the embodiment, FIG. 2A is a sectional view of the molded article, FIG. 2B is a sectional view of the molded article in a processed state, and FIG. It is sectional drawing of the fitted state.

FIG. 3 is a partial cross-sectional view showing a usage state of the embodiment as well.

FIG. 4 is an enlarged cross-sectional view of the connecting portion in the same use state.

FIG. 5 is an enlarged cross-sectional view of the cap fitting portion in the same use state.

FIG. 6 is a partial cross-sectional view of another embodiment of the present invention.

[Explanation of symbols]

 1, 22 Base body 1b, 22b Edge 2, 23 Synthetic resin body 3, 21 Base 4 Spout 6 Winding edge 8 Edge edge 9, 24 Folding part 10 Metal container 14, 27 Cap

Claims (5)

[Scope of utility model registration request] 1. A cap of a metal container, wherein a synthetic resin body having a shape similar to that of the base body is fitted inside the base body of the base. 2. The base of a container according to claim 1, wherein the base of the base and the synthetic resin body are formed in an inverted conical shape. 3. The base of a container according to claim 1, wherein the base body and the synthetic resin body are formed into a cylindrical shape. 4. The cap of the container according to claim 1, wherein the cap fitting portion side edge of the mouthpiece main body is covered with the edge folding back portion of the synthetic resin body. 5. The edge of the synthetic resin body is substantially aligned with the metal container connecting edge of the base body.
The base of the container described in paragraph.