JPH06293388A - Method and device for pressure extrusion of material from container - Google Patents

Abstract

PURPOSE:To prevent the reduction of the amount of material contained in a container by a method wherein the air between a pressing plate and a protecting film and the air mixed on the surface of the material or in its interior are efficiently expelled and the leakage of the material from an air escape valve is prevented. CONSTITUTION:An air escape plate 7 with a material extracting hole 8 is placed on a protecting film 2 laid on the surface of material W in a container 1 and a hole 9 is formed in part of the protecting film 2 to extract the material W. From above the air escape plate 7, a pressing plate 5 is airtightly engaged with the opening part of the container 1 via sealing members 6 and is moved downwardly by a pressing device (not shown) to press the surface of the material W via the air escape plate 7 and the protecting film 2 and the material W thus forced out is filled in a small-size container (not shown) through a liquid supply hose 4 connected to the container.

Description

Detailed Description of the Invention

The present invention relates to a material pressure extrusion method and apparatus for extruding a material such as a sealing material contained in a container such as a drum can to fill a small container and the like, and more particularly to a material extruding material from inside the container. TECHNICAL FIELD The present invention relates to a method and apparatus for pressurizing material from the inside of a container so as to surely remove air from the inside of the container when it is extruded and filled in a small container so that air is not mixed into the liquid supply hose.

[0002]

2. Description of the Related Art Conventionally, as a material pressure extruding method for extruding a material such as a sealing material contained in a container such as a drum can to fill a small container, for example, a sealing material as shown in FIG. When the material W is extruded while being pressurized from the container 1 such as a drum can containing the material W,
On a protective film 2 such as a polyethylene film laid on the surface of the material W in the container 1, a pressure plate 5 provided with an air bleeding valve 3 and a liquid supply hose 4 is provided at the opening 1a of the container 1 with a sealing member 6 Fit airtightly through.

When the pressure plate 5 is lowered at a constant pressure to press the surface of the material W through the protective film 2, the air between the pressure plate 5 and the protective film 2 and the surface of the material and The air mixed in the interior is exhausted from the air vent valve 3, and the material W is used as the protective film 2
It is configured such that it is extruded through the liquid feed hose 4 from the cut hole 2a provided in a part thereof and filled in a small container (not shown) connected to the tip of the liquid feed hose 4.

[0004]

However, in the case of the above method, when the air is extruded from the air bleeding valve 3 and exhausted, the protective film 2 is broken and the material W is also pushed out from the air bleeding valve 3. Sometimes,
In this case, the extruded material W has to be discarded as a waste material, and there is a problem that the material is wasted and the yield of the material contained in the container 1 is reduced.

The present invention has been devised in view of such conventional problems. When the material is pressed, air is mixed between the pressure plate and the protective film and the surface or inside of the material. Air can be exhausted efficiently, and it is possible to effectively prevent the material from coming out with the air from the air vent valve, reduce the waste of the material, and prevent the yield of the material contained in the container from decreasing. It is an object of the present invention to provide a material pressure extrusion method from a container and a device therefor.

[0006]

In order to achieve the above object, the present invention places an air bleeding plate having a material extraction hole on a protective film laid on substantially the entire surface of the material in a container. Then, a pressure plate is airtightly fitted into the opening of the container from above the air bleeding plate, and when the surface of the material is pressed by the pressure bleeding plate through the air bleeding plate and the protective film, the pressure plate The gist of the invention is to bleed the air in the container from the air bleeding valve provided in the above and to push out the material from the liquid supply hose connected to the pressure plate through the material extraction hole of the air bleeding plate.

Further, according to the present invention, a container containing a liquid material, a protective film laid on substantially the entire surface of the liquid material, and an airtight fit in the opening of the container on the protective film. In a material pressure extruding device comprising a combined air bleeding valve and a pressure plate equipped with a liquid supply hose, the gist is that an air bleeding plate having material extraction holes is placed on a protective film. Is.

[0008]

The present invention is constructed as described above, and when the air vent plate is placed on the protective film laid on the surface of the material and pressure is applied by the pressure plate, the material is passed through the air vent plate. Since the protective film laid on the surface of the product is pressed, the protective film will not break and only the air can be efficiently extracted from the air bleeding valve. It can be pushed out of the container and efficiently filled into small containers.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 shows a partial cross-sectional view of a cylindrical container 1 for carrying out the material pressure extrusion method of the present invention, where W is a material such as a sealing material housed in the container 1 and 2 is a material W. Protective film such as polyethylene film laid on the surface, 5 is an air vent valve 3
2 shows a pressure plate including a liquid feeding hose 4, and the pressure plate 5 is configured to be airtightly fitted into the opening 1a of the container 1 via the seal member 6.

The protective film 2 is laid after the material W is filled in the container 1 so that the solvent of the material W such as the sealing material contained in the container 1 does not volatilize. Reference numeral 7 denotes a disc-shaped air bleeding plate placed on the protective film 2 laid on the surface of the material W. When the material W is pressed by the pressure plate 5, the air bleeding plate 7 is pressed. Then, the protective film 2 laid on the surface of the material W is pressed.

As shown in FIG. 2, the air vent plate 7 has a material extraction hole 8 formed at a position corresponding to the mounting portion of the liquid supply hose 4 provided on the pressure plate 5, and the shape of the air vent plate 7 is formed. Has a thickness of 3 to 10 mm, and is formed to have a diameter that creates a gap of 30 mm to 100 mm with respect to the inner diameter D of the container 1. Further, as the material of the air vent plate 7, vinyl chloride, Teflon, rubber, aluminum or the like is used.

Next, a method of material pressure extrusion from the container 1 will be described. When the material W is extruded from the container 1 and filled in a small container (not shown) or the like, the material W in the container 1
An air vent plate 7 of a predetermined size provided with material extraction holes 8 on a protective film 2 laid on the entire surface of the
To place. At this time, a hole 9 for extracting the material W is formed in a part of the protective film 2. Then, the pressure plate 5 is airtightly fitted from above the air bleeding plate 7 into the opening 1a of the container 1 via the seal member 6, and the pressure plate 5 is lowered by a pressing device such as a cylinder (not shown). Then, the surface of the material W is pressed at a constant pressure through the air bleeding plate 7 and the protective film 2.

At this time, the air bleeding valve 3 is left open, and when the surface of the material W is pressurized at a constant pressure, the air between the pressure plate 5 and the protective film 2 and the surface or the inside of the material W are not exposed. The mixed air is exhausted from the air vent valve 3. Then, when the exhaust of air is completed, the material extraction hole 8 of the air bleeding plate 7 and the hole 9 of the protective film 2 from the liquid supply hose 4 connected to the pressure plate 5 by the pressure applied by the pressure plate 5. The material W is extruded through the material W, and the extruded material W is sequentially filled in a small container (not shown) connected to the liquid supply hose 4.

By extruding the material W by the above-mentioned method, the air can be surely discharged when the container 1 is set without damaging the protective film 2, and the air is not mixed in the liquid supply hose 4. The material W can be extracted. In addition, when the pressure plate 5 is lifted after the pressure extrusion of the material W, the air vent valve 3 is opened to prevent the inside of the container 1 from becoming a negative pressure. Since the pressure plate 5 and the protective film 2 do not come into close contact with each other by inserting the pressure plate 7, the pressure plate 5 can be easily lifted.

When the pressure inside the container 1 becomes negative, the material W flows backward from the piping system when the pressure plate 5 rises, which causes air entrainment thereafter. Therefore,
It is preferable to open the air bleeding valve 3 to operate during the pressurization by the pressurizing plate 5 and after the completion of the pressurizing and extruding. Next, Table 1 below shows the results of an experiment in which the material W is extruded by variously changing the material and thickness of the air bleeding plate 7 and the gap between the air bleeding plate 7 and the container 1.

[0016]

[Table 1]

As is clear from the experimental results shown in Table 1, the air vent plate 7 using Teflon has a thickness of 5-10.
mm, the space between the container 1 and the container 1 was 30 to 50 mm, which was the easiest to use and had a good air bleeding effect. That is, when vinyl chloride is used for the air bleeding plate 7, it is easy to purchase, easy to obtain, and easy to work with, but it has the drawback that it is easily cracked during pressurization or repeated use. When using a rubber plate for 7, it is difficult to set because it lacks rigidity, and when a thick plate is used, there is a problem that it is heavy and handling and workability are poor. When a plate is used, it is easily deformed and requires careful handling. When Teflon is used as the material, the workability is the best.

Further, when the thickness is 3 mm, the rigidity is small, so that the adhesiveness with the protective film 2 is insufficient, the air bleeding effect is not so good, and the gap with the container 1 is 3 mm.
If it is less than 0 mm, the air bleeding effect will be better, but container 1
The setting work on the container becomes extremely bad, and the gap between the container 1 and
The workability was best when the thickness was 0 to 50 mm.
If the gap with the container 1 is 100 mm or more, the air bleeding effect becomes poor. In Table 1, the ◎ symbol indicates
The case where the handling, workability and air bleeding effect are the best is shown, and the ○ symbol shows the degree that there is no problem in practical use, and the △ symbol shows that there is a problem in workability, air bleeding effect, etc. Shows.

[0019]

As described above, according to the present invention, the air vent plate having the material extraction holes is placed on the protective film laid on the entire surface of the material in the container as described above, and the air vent plate is placed above the air vent plate. When the pressure plate is airtightly fitted into the opening of the container, and the surface of the material is pressed at a constant pressure by the pressure plate through the air vent plate and the protective film, the air provided on the pressure plate As the air inside the container is evacuated through the bleeding valve, and the material is pushed out through the material extraction hole of the air bleeding plate from the liquid supply hose connected to the pressure plate, the following excellent effects can be achieved. is there. (A). When pressurizing the material, the air between the pressure plate and the protective film and the air mixed on the surface or inside of the material can be efficiently exhausted. (B). It is possible to effectively prevent the material from being discharged together with the air from the air vent valve, reduce the waste of the material, and prevent the yield of the material contained in the container from decreasing. (C). Air can be evacuated only by operating the air bleeding valve, so the air bleeding time can be shortened and the time for material disposal and the like can be omitted. (E). Also, since the structure is simple, it can be manufactured at low cost and can be handled easily.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a cylindrical container for carrying out the material pressure extrusion method of the present invention.

FIG. 2 is a partial plan view of an air vent plate.

FIG. 3 is a partial cross-sectional view of a cylindrical container for carrying out a conventional material pressure extrusion method.

[Explanation of symbols]

1 Container 1a Container opening 2 Protective film 3 Air vent valve 4 Liquid supply hose 5 Pressure plate 6 Sealing member 7 Air vent plate 8 Material extraction hole W Material

Claims (2)

[Claims] 1. An air bleeding plate having material extraction holes is placed on a protective film laid on substantially the entire surface of the material in the container, and a pressure plate is placed from above the air bleeding plate to the container. When airtightly fitted to the opening of the container and pressurizing the surface of the material by the pressure plate through the air vent plate and the protective film, the air in the container is removed from the air vent valve provided in the press plate. ,
A material pressure extruding method from within a container, characterized in that a material is extruded from a liquid supply hose connected to a pressure plate through a material extraction hole of the air bleeding plate. 2. A container containing a liquid material, a protective film laid on substantially the entire surface of the liquid material, and air airtightly fitted to the opening of the container on the protective film. In a material pressure extruding device comprising a vent valve and a pressure plate equipped with a liquid supply hose, an air vent plate having a material extraction hole is placed on the protective film from inside the container. Material pressure extrusion equipment.