JP3166256U - Tube container and tube container manufacturing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tube container and a tube container manufacturing apparatus having a simple structure, sufficient strength, and easy to take out the contents. SOLUTION: A male screw portion 24 and a spout 22 are integrally molded by injection molding directly on one end of a tube portion 12 made of synthetic resin. The tube portion 12 and the male screw portion 24 are molded of the same type of resin. The tube portion 12 is extruded and cut to a predetermined length, and the male screw portion 24 and the spout 22 are integrally molded on one end of the cut tube portion 12 by injection molding directly. The side surface of the tube portion 12 is printed. [Selection diagram] Fig. 1

Description

  The present invention relates to a tube container and an apparatus for manufacturing a tube container that contain the contents of an amorphous material having a high viscosity such as an adhesive and take out the contents by pressing a side surface.

  Conventionally, as a container for storing the contents of an amorphous material having a high viscosity, there is a tube part provided with a tube part that is a flexible side surface and a hard spout for closing an end part of the tube part. The tube container has a cylindrical spout, and has a male screw formed on the outer peripheral surface and a cap formed with a female screw formed on the inner peripheral surface. Such tube container manufacturing methods include a blow integral molding method, a welding method, and an insert molding method. Blow integral molding is one in which the tube portion and the spout are integrally blow-molded, and is a technically relatively easy and inexpensive manufacturing method. Moreover, the welding method welds and connects the tube part and spout which were shape | molded separately. On the other hand, insert molding is a method in which a spout is injection-molded in a tube portion molded in advance as shown in Patent Document 1.

JP 2000-72163 A

  In the case of the above-described conventional blow-integrated molding, the spout of the tube container needs to have a certain thickness in order to give strength to ensure that the cap is screwed together. Since the spout is integrally blow-molded, the tube portion that is required to be flexible is also relatively thick and has a problem that it is hard and difficult to squeeze.

  On the other hand, in the case of the welding method, the tube part is thinly and flexibly molded in advance, and the spout formed by securing the hardness to this tube part is welded. It becomes possible. However, due to poor welding at the joint between the tube portion and the spout or the like, there is a possibility that the contents will be damaged and leaked from here. In addition, when the edge of the tube part is not completely bonded to the peripheral surface of the spout, the contents may enter between the inner tube part and the peripheral surface of the spout, resulting in a remaining squeeze. . Furthermore, the display of the tube portion is printed on each side, and there is a problem that creases can be formed on both sides of the tube portion. In addition, since the tube portion and the spout are separately molded and welded, there are many manufacturing processes, productivity is lowered, and the unit price is increased.

  In the insert molding method disclosed in Patent Document 1, a barrier head having gas impermeability is provided on the inner peripheral surface of the spout, and the structure is complicated. In addition, since the material of the tube part and the spout is different, the joint strength is not sufficiently high, and the end of the tube part is joined so as to wrap around the peripheral part of the spout, and this also makes the structure complicated It was expensive.

  The present invention has been made in view of the above-mentioned problems of the prior art, and provides a tube container and a tube container manufacturing apparatus that have a simple structure and sufficient strength and that can easily take out contents. Objective.

  This device is formed by integrally molding a male screw part and a pouring part having a spout directly by injection molding at one end part of a synthetic resin tube part. The tube container is joined to the shoulder portion in a cylindrical state without being brought down to the shoulder side of the extraction portion.

  The tube part and the extraction part are molded from the same kind of resin. In particular, the tube part and the extraction part are formed of a resin in which EVA is mixed with polyethylene.

  The tube portion is formed by extruding a synthetic resin, the tube portion formed by the extrusion molding is cut into a predetermined length, and has an external thread portion and a spout at one end portion of the tube portion. It is a tube container in which a pouring part is integrally provided by injection molding, and printing is performed on a side surface of the tube part.

  The present invention also includes an extrusion molding portion for extruding a synthetic resin tube portion, a cooling water tank for cooling the tube portion formed by the extrusion molding portion, and a cutting for cutting the cooled tube portion to a predetermined length. An injection molded part that forms a male threaded part and a spout of a pouring part continuous from the tube part by injection molding at one end of the cut tube part and directly joins the tube part, and the tube A tube container manufacturing apparatus comprising: a printing section that prints on a side surface of the section; and a process from the extrusion molding section of the tube section to the printing section is continuously arranged by a series of apparatuses.

  The tube container manufacturing apparatus according to the present invention sequentially processes from the extrusion process of the tube part to the printing process in a continuous process by a series of apparatuses, an extrusion molding part, a cooling water tank, a cutting part, an injection molding part. , Consisting of a fully automated line with a continuous printing section.

  According to the tube container of this device, it is possible to manufacture the tube container with a simple structure at low cost, and the spout has sufficient strength necessary for removing the cap and pushing out the contents. Further, the tube portion is flexible, and the contents can be easily squeezed out with a weak force.

It is a front view of the tube container of one Embodiment of this device. It is a fragmentary longitudinal cross-sectional view of the tube container of this embodiment. It is the schematic which shows the metal mold | die of the injection molding part of the tube container of this embodiment. It is a schematic process drawing by the manufacturing apparatus of the tube container of this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show an embodiment of the present invention. A tube container 10 of this embodiment is provided with a tube portion 12 made of a synthetic resin having appropriate flexibility. The tube portion 12 has a cylindrical side surface 14, and one end portion of the side surface 14 is provided with a tail portion 16 that is heat-sealed by crushing the tube portion 12 in the radial direction of the side surface 14. The material of the tube part 12 is polyethylene etc., for example, and has high flexibility. The tube portion 12 is formed thin and has a thickness of 0.28 mm, for example.

  A pouring part 18 is provided integrally with the tube part 12 by injection molding at the end of the tube part 12 opposite to the tail part 16. The pouring part 18 is molded from the same resin as the tube part 12, for example, polyethylene mixed with EVA at a mixing ratio of 8 to 2. The pouring portion 18 is provided with a shoulder portion 20 that is a tapered surface that closes the opening portion of the side surface 14 and the center of the pouring portion 18 faces outward. A cylindrical pouring port 22 projects outward from the center of the shoulder portion 20. Are integrally formed. A male screw part 24 is integrally provided on the outer peripheral surface of the spout 22.

  A cap (not shown) is detachably attached to the spout 22 and is closed. The cap is integrally provided with a cylindrical side surface that covers the spout 22 and a top plate that closes the opening of the spout 22, and the inner peripheral surface of the side surface is screwed into the male screw portion 24 of the spout 22. The female screw is formed constant.

  Next, the manufacturing apparatus and manufacturing method of the tube container 10 of this embodiment are demonstrated based on FIG. 3, FIG. First, a long tube forming the side surface 14 of the tube portion 12 is molded by an extrusion molding portion 26 composed of an extrusion molding machine 25 or the like of a production line, and then cooled by a cooling water tank 28, and then by a cutting portion 30. Cut to the length of the tube portion 12 of each tube container 10. Next, the cut tube portion 12 is attached to the mold, and the injection portion 18 is insert-molded by the injection molding portion 32.

  FIG. 3 shows an injection molding portion 32. First, the tube portion 12 is fitted into a cylindrical core member 34 having the same inner diameter and outer diameter. A conical shoulder portion 36 is integrally formed at the upper end portion of the core member 34, and a columnar portion 38 that is cylindrical and protrudes outward is integrally formed at the center of the shoulder portion 36. The height of the cylindrical portion 38 is slightly higher than the spout 22.

  Next, the core member 34 to which the tube portion 12 is attached is placed inside the enclosure portion 40 that is a mold for molding the outside of the extraction portion 18. As a result, a cavity 42 that forms the extraction portion 18 is formed. A male screw recess 44 for forming the male screw portion 24 is formed in a portion of the surrounding portion 40 that forms the outer peripheral surface of the spout 22. The molten resin is injected into the cavity 42 from the gate 46 provided in the surrounding portion 40 and communicated with the cavity 42 to mold the extraction portion 18, and the end surface of the one end portion of the tube portion 12 and the inner side surface 14 The extraction portion 18 is physically joined in a cylindrical state without causing one end portion of the tube portion 12 to fall on the shoulder portion 20 side of the extraction portion 18. The encircling portion 40 may be divided in advance, and the encircling portion 40 divided in half can be easily attached and detached.

  Next, the surrounding part 40 is removed, the core member 24 is pulled out, and the tube container 10 is obtained. Thereafter, an arbitrary pattern 50 such as a product name or a mark is printed on the side surface 14 of the tube container 10 by the printing unit 48. In the printing unit 48, both sides can be printed without making a fold on the side surface 14 by using a printing jig. Then, in the process of filling the product, the pouring part 18 is closed with a predetermined member, for example, a cap, the contents are put through the open end of the side surface 14, that is, the opening opposite to the pouring part 18, and the tail part 16 is heat sealed. Form and seal. And it puts into a predetermined transport box with a boxing machine and ships.

  According to the tube container 10 of this embodiment, since it is a simple structure and inexpensive, and the tube portion 12 and the extraction portion 18 are integrally insert-molded with the same material, the strength of the joint is high without gaps, It has the required strength when extruding the contents. In addition, since the tube portion 12 is flexible and thinly molded in advance, it is easy to squeeze with a soft touch, and the contents can be easily drawn out with a weak force. Further, the material cost is reduced by making the tube portion 12 thinner. Since the pouring portion 18 has a thickness and is molded with strength, the cap can be attached and detached reliably. In addition, the tube container 10 can be manufactured by a fully automated line in which an extrusion molding unit, a cooling water tank, a cutting unit, an injection molding unit, and a printing unit are continuous, so that productivity is improved and mass production is possible. It can also be reduced.

  In addition, the tube container of this invention is not limited to the said embodiment, The shape of each member can be freely changed according to the property and intended purpose of the contents. The material of the tube container may be any material as long as it has appropriate strength and flexibility, and can be freely selected. The fully automated line of the tube container is not limited to the above embodiment, and the order of the processes may be changed or other processes may be added.

DESCRIPTION OF SYMBOLS 10 Tube container 12 Tube part 14 Side surface 16 Tail part 18 Extraction part 20 Shoulder part 22 Outlet 24 Male thread part

Claims (5)

  The tube part is formed by integrally molding a male screw part and a pouring part having a spout by injection molding directly on one end part of the synthetic resin tube part, and the tube part has one end part of the pouring part. A tube container that is joined to the shoulder portion in a cylindrical state without being tilted to the shoulder side.   The tube container according to claim 1, wherein the tube portion and the extraction portion are molded of the same kind of resin.   The tube container according to claim 2, wherein the tube portion and the extraction portion are formed of a resin in which EVA is mixed with polyethylene.   The tube portion is formed by extruding a synthetic resin, the tube portion formed by the extrusion molding is cut into a predetermined length, and has an external thread portion and a spout at one end portion of the tube portion. The tube container according to claim 1, wherein the dispensing portion is integrally provided by injection molding, and printing is performed on a side surface of the tube portion. An extrusion molding section for extruding a synthetic resin tube section, a cooling water tank for cooling the tube section formed by the extrusion molding section, and a cutting section for cutting the cooled tube section to a predetermined length. In addition, an injection molded part that is formed by injection molding integrally with a male thread part and a spout of a pouring part continuous from the tube part and directly joined to one end of the tube part is printed on a side surface of the tube part. The tube container manufacturing apparatus characterized by comprising a printing section for applying a process, wherein the steps from the extrusion molding section of the tube section to the printing section are continuously arranged by a series of apparatuses.

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