JPH11342951A - Container with bottomed cylindrical body for distribution port and method for producing the same - Google Patents

Abstract

(57) [Problem] To provide a bottomed cylindrical body for a distribution port by forming a bottomed cylindrical body for a distribution port in a volume at the time of molding, so that it can protrude to the outside of the container after molding. Can be integrally formed with the container. A container A is formed from a synthetic resin sheet and has a flexible and flexible shape by deep drawing formed integrally with the container A from the bottom side A1 of the container within the volume of the container A. The bottomed tubular body a is provided, and the bottomed tubular body is formed as a bottomed tubular body for a flow port, which is formed by extruding outward from the container bottom side after molding and inverting to form freely. When the container A is formed from the container with the outlet and the synthetic resin sheet to be formed, the flexibility and the flexibility which extend from the container bottom side and protrude inward within the stroke range of the mold for molding the volume shape of the container. Forming a bottomed cylindrical body a having the following formula, and extruding the bottomed cylindrical body a outward from the container bottom side A1 after forming the container to form a bottomed cylindrical body a for a distribution port. A method for producing a container with a bottomed cylindrical body for a distribution port, which is characterized by:

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container with a bottomed cylindrical body for a distribution port and a method for producing the same, which is performed without forming a molding stroke of a molding die unnecessarily long, and then, after molding, outside the container. The present invention is configured such that a protruding bottomed cylindrical body for a flow port can be molded in a state integrated with a container.

[0002]

2. Description of the Related Art Conventionally, when a circulation port is formed in a container, a part of the container bottom is opened at the time of molding, or a part of the container bottom is opened after molding. It was a hole and a plug was attached to that part.For example, to form a flow port that protruded from the bottom of the container in a cylindrical shape so that liquids and powders could be easily injected into other places, It had to be formed by sealing or screwing. In order to be integrated at the time of molding, the molding stroke of the mold is extended by an amount protruding outward from the bottom of the container. Therefore, it has been difficult to form a sheet unless the container is very shallow.

Therefore, in the present invention, unlike the above-mentioned prior art, the bottomed cylindrical body for the distribution port is formed in a volume at the time of molding, and can be protruded to the outside of the container after molding. It is possible to integrally mold a bottomed cylindrical body for use with a container.

[0004]

According to the present invention, a container with a bottomed cylindrical body for a distribution port according to the present invention is a container molded from a synthetic resin sheet as described in claim 1, and has a capacity of the container. A flexible and flexible bottomed cylindrical body is formed by deep drawing formed integrally with the container from the bottom side of the container and formed outwardly from the bottom side of the container after forming the bottomed cylindrical body. It is characterized in that it is configured as a bottomed cylindrical body for a circulation port that can be formed by extrusion and reversal.

According to the first aspect of the present invention, the flexible and flexible bottomed cylindrical body that protrudes within the volume of the container at the time of molding is formed outside the container so as to be used as a distribution port after molding. Because it is provided with a protruding shape freely, it can be integrally molded within the volume of the container, it can be molded without taking a specially long molding stroke, and it has a bottomed cylindrical shape The body is in the volume of the container, stretched and molded, has flexibility and flexibility, and can easily be extruded and inverted (meaning the inside out) after molding.

In particular, when the bottomed cylindrical body is formed in a tapered shape having a narrow bottomed side, it can be easily extruded while being inverted (while turning over) after molding. Become.

[0007] Then, as described in claim 3, the bottomed cylindrical body after being pushed out to the bottom side of the container may be opened to form a flow opening, and the flow opening may be formed. If an opening / closing port is provided, opening / closing becomes easy.

Further, according to the present invention, when the above-mentioned synthetic resin sheet is characterized in that it is foamed polyethylene terephthalate as described in claim 4, it is stretched and formed into the container volume at the time of forming the container. The flexibility and flexibility of the bottom cylindrical body, and further, the provision of heat resistance and oil resistance are more preferable.

Next, a method of manufacturing a container with a bottomed cylindrical body for a distribution port, as described in claim 5, when forming a container from a synthetic resin sheet, forming the container into a volume shape. Forming a flexible and flexible bottomed cylindrical body extending from the container bottom side and protruding inward within the stroke range of the mold, and forming the bottomed cylindrical body from the container bottom side after forming the container It is characterized in that it is extruded and turned outward to form a bottomed tubular body for a distribution port.

According to the manufacturing method of the fifth aspect, the flexible and flexible bottomed cylindrical body is formed by forming the synthetic resin sheet within the stroke range of the forming die for forming the volume shape of the container. Since the molding is performed by stretching, the molding stroke is not extended than the molding stroke of the container itself, so that the bottomed cylindrical body can be easily molded. Then, after molding, the extruded reversal of the bottomed cylindrical body to the outside of the container can be easily performed by utilizing its flexibility and flexibility, and it becomes easy to form a flow opening by opening the bottomed. .

In particular, when the bottomed cylindrical body is formed into a thin tapered shape at the same time as the container is formed, the extruded reversal of the bottomed cylindrical body after the molding is performed. Is more easily performed.

[0012]

Next, an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a molded product together with a mold after mold release, wherein A is a molded container, 10 is a cavity mold of the mold, and 20 is a plug mold.
Reference numeral 21 denotes a mold portion of the container A for forming the bottomed cylindrical body a.

The container A is molded from the synthetic resin sheet by the cavity mold 10 and the plug mold 20. The container bottom is set within the stroke range S of the mold for molding the volume shape of the container A. The bottomed cylindrical body a that extends from the A1 side and protrudes inward is formed, and is stretched to have flexibility and flexibility.
It is formed so that it can be pushed outward and turned over from the side.

After the bottomed cylindrical body a molded integrally with the container A in this way, as shown in FIG. 2, the bottomed cylindrical body a for the distribution port is extruded outward from the container bottom A1 side and turned over. a is formed so as to protrude outward from the container. This figure 2
Shows the positional relationship before and after pushing up.
FIG. 3 shows a plan view. When the bottom of the bottomed cylindrical body a is opened, a circulation port is easily formed, and an appropriate opening / closing plug may be provided.

In particular, if the bottomed cylindrical body a is formed in a tapered shape in which the bottomed side is narrowed as shown in each figure, it is easy to perform a reversing operation by pushing out the container after molding. Become.

The synthetic resin sheet for forming the container A is a thermoplastic resin sheet and may be any of a foamed sheet and a non-foamed sheet. In particular, in the case of a foamed sheet such as foamed polyethylene terephthalate, In addition to having the cushioning property and light weight characteristic of a foamed sheet, it is possible to provide a sheet having excellent heat insulating properties, heat resistance and oil resistance.

The container with the bottomed tubular body a for the distribution port according to the present invention can be formed integrally with the flexible and flexible bottomed tubular body a by the sheet forming method as described above, In particular, the bottomed cylindrical body a, which is formed integrally with the container A from the bottom A1 side of the container A within the volume of the container A, is extruded outward from the bottom A1 side of the container A after molding, and is inverted (inverted). ), The protrusion can be formed freely, so that the molding can be performed without specially lengthening the molding stroke during molding, which facilitates molding, and adversely affects the molded container. Therefore, a good molded product can be provided.

Further, if the bottomed cylindrical body a for the distribution port in the container A is formed to have a tapered shape with the bottomed side as shown in the figure, it is extremely difficult to push out (turn over) the outside of the container A after molding. There is also an advantage that is easy to perform.

Then, by opening the bottom of the bottomed cylindrical body a after the extrusion and reversal, it is possible to easily form a circulation port, and it can be used as a circulation port for allowing the contents to flow out of the container A (FIG. 4).
reference).

[0021]

The container with a bottomed tubular body for a distribution port according to the present invention described above is formed from a synthetic resin sheet, and is provided with a bottomed tubular body that can be formed to project outside the container. The bottomed cylindrical body that becomes the distribution port by being extruded and inverted can be easily formed on the outside of the container, and various contents, especially for liquid substances such as chemicals, oils, drinking water, etc. It becomes a thing suitable as a container.

Further, in the method for producing the above-mentioned container according to the present invention, a bottomed cylindrical body for a distribution port is molded integrally with the container in a volume, and after molding, its flexibility and flexibility are moved outward from the container. Since the sheet is extruded and inverted using the property, it is not necessary to take a specially long forming stroke in forming the sheet, and the sheet can be manufactured by ordinary sheet forming.

Further, the bottomed cylindrical body which is pushed out to the outside of the container and turned over can be used so as to form a flow opening integrated with the container, so that it is not necessary to form the flow port afterwards.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state after mold release.

FIG. 2 is a sectional view in which a bottomed cylindrical body is extruded and inverted.

FIG. 3 is a plan view.

FIG. 4 is a cross-sectional view showing a state in which contents are flowing out.

[Explanation of symbols]

 A Container A1 Container bottom a Bottomed cylindrical body 10 Cavity type 20 Plug type 11, 21 Mold part for forming a bottomed cylindrical body S Stroke range

Claims (6)

[Claims] 1. A container formed from a synthetic resin sheet and having a flexible and flexible bottomed cylindrical shape formed by deep drawing formed integrally with the container and protruding from the bottom of the container within the volume of the container. Body is formed as a bottomed cylindrical body for a flow port, which is formed by extruding the bottomed cylindrical body outward from the bottom side of the container after molding and allowing the protrusion to be formed by inversion. Container with a bottomed cylindrical body. 2. The container with a bottomed tubular body for a distribution port according to claim 1, wherein the bottomed tubular body is formed in a tapered shape in which the bottomed side is narrowed. 3. The bottomed cylindrical body for a flow opening according to claim 1, wherein the bottomed cylindrical body after being pushed out to the bottom side of the container is opened to form a flow opening. With container. 4. The container with a bottomed tubular body for a distribution port according to claim 1, wherein the synthetic resin sheet is foamed polyethylene terephthalate. 5. When forming a container from a synthetic resin sheet, the container has flexibility and flexibility extending from the container bottom side and protruding inward within a stroke range of a forming die for forming a volume shape of the container. Forming a bottomed cylindrical body, extruding the bottomed cylindrical body outward from the container bottom side after forming the container, and inverting to form a bottomed cylindrical body for a distribution port; The method for producing a container with a bottomed cylindrical body of the above. 6. The bottomed cylindrical body is formed into a tapered shape with a narrow bottom at the same time as the container is formed.
A method for producing a container with a bottomed cylindrical body for a distribution port as described in the above.