JPH10175651A - Plastic container, and cartridge assembly for discharging gun for which the plastic container is used - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the bulkiness when a used cartridge is disposed by a method wherein on the opening ends of a pair of container main bodies which are formed into a semi-cylindrical shape of a plastic laminated film, an upper molded part and a lower molded part are integrally formed by an insert-injection-molding respectively. SOLUTION: For this plastic container 20 is formed of a pair of container main bodies 21 which are formed into a semi-cylindrical shape with a plastic laminated film as the raw material, an upper molded part 22 which is provided in a manner to combine the container main bodies 21 at the upper end opening of a container assembly being formed in such a manner that the flat surface side of the pair of the container main bodies 21 may be bonded, and a lower end molded part 23 which is provided in a manner to combine the container main bodies 21, at the lower end opening of the container assembly. The upper molded part 22 and the lower molded part 23 are integrally combined with the container assembly by an insert-injection- molding means. The upper molded part 22 has a take-out port 24 which is integrally formed on the upper molded part main body. An internal plug 28 is combined with the lower molded part 23 of the plastic container 20. By this method, the bulkiness of the disposal of a used cartridge can be prevented from generating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic container molded using insert injection molding means and a cartridge assembly for a discharge gun using the plastic container.

[0002]

2. Description of the Related Art In general, a discharge gun cartridge 1 is
As shown in FIG. 9, a cylindrical body 3 formed of a relatively hard synthetic resin material and provided with a discharge port 2 at a distal end thereof, and a lid 4 screwed to the discharge port 2 of the cylindrical body 3. A movable bottom plate 5 slidably provided on the inner surface of the rear end of the cylindrical body 3 along the longitudinal axis, and a fluid material 6 such as an adhesive sealed inside the cylindrical body 3. It is configured.

[0003] Discharge gun 10 for mounting cartridge 1
As shown in FIG. 11, a discharge gun body 13 having a grip 11, a semi-cylindrical support portion 12 extending forward from the upper end of the grip 11 and supporting the cartridge 1, and a tip portion of the semi-cylindrical support portion 12 , An end plate 14 having a substantially horseshoe shape, an operating rod 17 having a pressing plate 15 at its tip and pressed forward by a spring 16, and a movement of the operating rod 17 rotatably mounted on the grip 11. Lever 18 to control
It is composed of

In order to mount the cartridge 1 filled with the fluid material 6 to the discharge gun 10, the cover 4 shown in FIG. 9 is removed from the discharge port 2 of the cartridge 1, and a piercing tool is inserted from the tip of the discharge port 2. By inserting the patch, the patch 7 sealing the discharge port 2 was broken, and as shown in FIG.
The ejection gun cartridge 1 with the nozzle 19 fixed thereto is set at a predetermined position of the cylindrical support portion 12 of the ejection gun 10.

The fluid material 6 enclosed in the cartridge 1
In order to discharge the ink toward the target, hold the discharge gun 10 and pull the lever 18 of the discharge gun 10 in the direction of arrow A with the cartridge 1 provided on the discharge gun 10 so that the nozzle 19 faces the target. . By the operation of the lever 18, the operating rod 17 is moved forward while using the force of the spring 13, and the pressing plate 15 provided at the tip of the operating rod 17 supports the cartridge 1 supported by the semi-cylindrical support 9. The movable bottom plate 5 is pushed forward, and the fluid material 6 sealed in the cartridge 1 is discharged from the discharge port 2 toward the target object through the nozzle 19 by sliding the movable bottom plate 5 forward. .

[0006]

In the above-mentioned cartridge for a discharge gun, the contents contained in a cylindrical cartridge formed of synthetic resin are slid forward on a movable bottom plate provided in the cylindrical cartridge. Since the cartridge is ejected, the size of the cylindrical cartridge does not change before and after use, and when disposing of the used ejection gun cartridge, even if the inside is empty, it is the same as before use. It is discarded in the same shape, and there is a problem in discharging waste.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has an intermediate body of a cartridge formed of a cylindrical body of a plastic laminated film so that the cartridge can be compactly compressed and waste when a used cartridge is discarded. An object of the present invention is to provide a plastic container that solves the problem of processing and a cartridge assembly for a discharge gun using the plastic container.

[0008]

A plastic container according to the present invention comprises a pair of container bodies formed into a semi-cylindrical shape with a plastic laminated film and arranged so as to join the flat sides, and a pair of container bodies having an open end. An upper molded part and a lower molded part which are integrally connected by insert injection molding means, an outlet integrally molded with the upper molded part and connected to each container body, and a discharge port fixed to the lower molded part and fixed to each container body. And an inner stopper for sealing the bottom.

The discharge gun cartridge assembly of the present invention is integrally connected to a pair of container bodies formed into a semi-cylindrical shape with a plastic laminated film and open ends of the pair of container bodies by insert injection molding means. A plastic container having an upper molded portion and a lower molding portion and an outlet integrally formed with the upper molded portion and connected to each container main body, and an inner stopper fixed to the lower molded portion and sealing the bottom of each container main body, The plastic container is composed of an outer cylinder slidably mounted therein and a fluid material sealed in each container body of the plastic container.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example in which a plastic container according to the present invention is applied to a cartridge for a discharge gun. This plastic container 20 has a pair of container bodies 21 and 21 formed into a semi-cylindrical shape using a plastic laminate film as a material. An upper molding portion 22 provided to couple the two container bodies 21 to an upper end opening of the container assembly formed by joining the pair of container bodies 21 and 21 on the flat side, and a lower end of the container assembly Both container body 2 in opening
1 and a lower molded portion 23 provided so as to join the two. Upper forming part 22 and lower forming part 23
Are integrally connected to the container assembly by insert injection molding means. The upper molded part 22 has an outlet 24 integrally formed with the upper molded part main body. The outlet 24 divides the formed passage 25 into two by a partition wall 26, and each passage 25, 25 is connected to the container body 2.
It communicates with 1,21.

[0011] The plastic laminate film is
When the plastic container 20 is used as a container for filling an industrial sealing material, a gas barrier property is required. For example, a laminate film of polyethylene 30 microns / aluminum foil 12 microns / polyester 12 microns / polyethylene 30 microns is selected. You.

The plastic container 20 is manufactured by insert injection molding means shown in FIG. First, a pair of container bodies 21 and 21 formed into a semi-cylindrical shape are prepared.
Each container body 21 is mounted on the mandrel 30 which becomes a mold core, with the backs of the containers 21 and 21 being back to back.

Next, the mandrel 30 having the container bodies 21 and 21 is mounted on the upper molding portion 2 of the plastic container 20.
2 and a mold 31 provided with a space having a shape corresponding to the lower molding portion 23. A molding space for the lower molding portion 23 surrounded by the mandrel 30 and the mold 31 is defined.

Next, from the upper side of the mold 31, the spacer 32
Is mounted on the mold 31. A molding space for the upper molding portion 22 surrounded by the mandrel 30, the mold 31, and the spacer 32 is defined.

Next, the runners 33 provided on the mold 31,
33 is a molding space for the lower molding part 25 and the upper molding part 2
The molding space for 4 communicates with the mold 52. Runner 3
Reference numerals 3 and 33 communicate with the gate port 34. This allows
The setting of the container bodies 21 and 21 in the mold 31 is completed.

When the setting of the container bodies 21 and 21 in the mold 31 is completed, the mold is inserted into the molding space of the lower molding portion 23 and the molding space of the upper molding portion 22 through the gate port 55 provided in the mold 31 through the runner 54. The lower molding part 23 and the upper molding part 22 are molded by injecting the synthetic resin material in a molten state by the injection molding means and cooling the injected synthetic resin material. The molded upper molded part 22 and the molded lower molded part 23 are integrally connected to the container main bodies 21 and 21. As the synthetic resin material, a polypropylene resin or a polyethylene resin containing about 30% of an inorganic material such as calcium carbonate is preferable so that the used container can be treated as a combustible material.

The plastic container 20 is filled with, for example, a two-liquid type industrial sealing material. In order to fill the plastic container 20 with the two-pack type industrial sealing material, as shown in FIG. 3, the inner plug 27 is attached to the upper molded portion 22 of the plastic container 20, and the upper molded portion 22 is turned downward. Outlet 24 provided in upper forming part 22
Is mounted on the filling machine so as to be gripped, and the two-liquid type industrial sealing material poured out from the filling machine is filled into the container bodies 21 and 21 from the opening of the lower molding part 23, and the container body 2
When a predetermined amount of the industrial sealing material is filled into the container bodies 21 and 21, the inner plug 28 is attached to the open ends of the container bodies 21 and 21.
By connecting the inner plug 28 to the lower molded portion 23, the container main bodies 21 and 21 are sealingly connected. Plastic container 2
The inner plug 28 provided in the lower molded portion 23 also functions as a pressing portion pressed by the operating portion of the discharge gun.

When the inner plug 28 is connected to the lower molded portion 23 of the plastic container 20, air escape means is provided so that no air remains between the lower portion of the container body 21 and the inner plug 28. This air release means is shown in FIGS. The air releasing means shown in FIG. 4 is a filament 29a. The filament 29a is interposed between the inner plug 28 and the lower molded portion 23, and the inner plug 28 is fitted into the lower molded portion 23, thereby forming the filament. The lower part of the container body 21 and the inner plug 2 through the body 29a
8 to release the air remaining between them. The air releasing means shown in FIG. 5 is a silicon material 29b. This silicon material 29b is arranged inside the lower molded part 23 so that air does not remain between the lower part of the container body 21 and the inner plug 28. . The air release means shown in FIG.
3, the inner plug 28 is inserted into the lower molded part 23 as shown in FIG. 7 so that the inner plug 28 remains between the lower part of the container body 21 and the inner plug 28 through the hole 23a. Let the air out. In this case, the hole 23 a formed in the side wall of the lower molded portion 23 is closed by the inner plug 28.

FIG. 8 shows a cartridge assembly 50 for a discharge gun according to the present invention. The cartridge assembly 50 for a discharge gun includes a cartridge 51 in which a fluid material such as an industrial sealing material is sealed, and a cartridge 5 having the same.
1 is slidably mounted on the outer cylinder 52. The cartridge 51 has the same configuration as that of the plastic container 20, has an upper molding portion 53, a lower molding portion 54, and an inner stopper 55, and is provided with an outlet 56 integrally molded with the upper molding portion 53.

An outer cylinder 52 containing the cartridge 51 therein
Is formed of a relatively hard synthetic resin material, and a plurality of narrow grooves 52a extending in the axial direction are formed on the inner surface on one end side at intervals in the circumferential direction. These narrow grooves 56 form a large-diameter portion at the end of the outer cylinder 52, and allow the cartridge 51 compressed inside the outer cylinder 52 to be taken out of the outer cylinder 52 without being deformed. to enable.

After the used cartridge 51 is attached to the discharge gun 10 and the contents are taken out, the used cartridge 51 slides while being pressurized in the outer cylinder 52, and engages with the upper molded portion and the lower molded portion. The used cartridge 51 keeps its compressed state, and the compressed cartridge 51 is slightly larger than the inner diameter of the outer cylinder 52 by a narrow groove 56 provided on the inner surface on one end side of the outer cylinder 52 at intervals in the circumferential direction. The compressed portion is taken out from the diameter portion.

[0022]

As described above, in the plastic container of the present invention, a pair of container bodies formed into a semi-cylindrical shape with a plastic laminate film are formed into upper and lower molded part container bodies by insert injection molding means. Since it is made by integral molding, mass production can be performed and manufacturing costs can be reduced. Further, in the cartridge assembly for a discharge gun of the present invention, no air remains between the lower part of the cartridge and the inner plug, so that there is no drip phenomenon due to the air, the discharge performance is improved, and the working efficiency is improved. By taking out the compressed cartridge from the outer cylinder in the compressed state, when the used cartridge is discarded, the used cartridge is not discarded.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a plastic container according to the present invention.

FIG. 2 is a view showing a molding means of a plastic container according to the present invention.

FIG. 3 is a sectional view of a plastic container according to the present invention.

FIG. 4 is a view showing a connected state of the inner plug of the plastic container according to the present invention.

FIG. 5 is a view showing a connected state of another inner plug of the plastic container according to the present invention.

FIG. 6 is a view showing a connection state of another inner plug of the plastic container according to the present invention.

FIG. 7 is a view showing the operation of the inner plug of FIG. 6;

FIG. 8 is an exploded view of a part of the discharge gun cartridge assembly according to the present invention.

FIG. 9 is a view showing a conventional ejection gun cartridge.

FIG. 10 is a diagram showing a state where a nozzle is mounted on a conventional ejection gun cartridge.

FIG. 11 is a view showing a discharge gun.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Discharge gun 20 Plastic container 21 Container main body 22 Upper molded part 23 Lower molded part 24 Outlet 28 Inner plug 29a Air escape means 50 Cartridge assembly for discharge gun 51 Cartridge 52 Outer cylinder

Claims (3)

[Claims] 1. A pair of container bodies formed into a semi-cylindrical shape with a plastic laminated film and arranged so as to be joined on a flat side, and are integrally connected to open ends of the pair of container bodies by insert injection molding means. A plastic having an upper molded part and a lower molded part, an outlet integrally formed with the upper molded part and connected to each container body, and an inner plug fixed to the lower molded part and sealing the bottom of each container body. container. 2. The plastic container according to claim 1, wherein the inner plug is fixed to the lower molded portion via an air releasing means. 3. A cartridge set for a discharge gun comprising: the plastic container according to claim 1; an outer cylinder slidably housing the plastic container; and a fluid material sealed in each container body of the plastic container. Three-dimensional.