JPH05213371A - Clean container - Google Patents

Abstract

(57) [Summary] [Purpose] This is a container for cleaning solution, which is a fatal defect even if a small amount of dust is mixed in. It is easy to fill and remove the solution, and there is a risk of environmental pollution due to disposal. To provide a container with low cost and excellent economy. [Constitution] A container body 1 having an opening part that can be opened and closed
0 and a film having a thickness of 2000 μm or less so as to have a volume substantially equal to that of the container body 10, and the container body 10 has a bag mouth portion which can be sealed so as to correspond to the opening of the container body 10. And a bag body 30 that is removably housed inside the bag body 30 and the cleaning degree in the bag body 30 is the bag body 3.
The number of dust particles having a particle size of 50 μm or more is 0 and the number of dust particles having a particle size of 25 to 50 μm is 500 or less per 1 m ² of the inner surface of 0,
A clean container in which the number of dust particles of 5 to 25 μm is 2000 or less.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is suitable for accommodating a cleaning solution or the like which is extremely disliked by the inclusion of dust, since even a minute dust which cannot be visually observed becomes a fatal defect due to the inclusion of an extremely small amount. Clean container. More specifically, in the process of filling the clean solution into the container, clean water,
The present invention relates to a clean container which does not require cleaning of the container by cleaning or drying with a clean solvent or clean air, has little environmental pollution due to the disposal of the container, and is excellent in economic efficiency.

[0002]

2. Description of the Related Art Thin film coating agents, etc., which are reluctant to mix in foreign matter, are
It is well known to give a product a fatal defect. For example, a coating agent for an optical fiber is required to have a strict cleaning degree that dust of 25 μm or more should not be present in the coating agent.

For this reason, a cleaner that requires cleanliness is used.
Solution, in the manufacturing process and container filling process,
Great care is taken to prevent dust contamination. For example, conventionally, in the above-mentioned filling step, the inside of the container is thoroughly washed with clean water or a clean organic solvent, and then dried, or sufficiently cleaned with clean air. afterwards,
The container is filled with the above-mentioned cleaning solution under a clean air atmosphere. In this way, the mixing of dust is prevented.

However, the above method uses a large amount of expensive clean water, clean solvent or clean air, and necessitates clean equipment. Therefore, it is not economical, and a great deal of time and labor are required for the above-mentioned washing, drying and cleaning. Further, most of the clean solution filled in the above-mentioned container is a polymer solution. Therefore, after use, the polymer solution adheres to the inner wall of the container. Since it is almost impossible to completely remove this by washing, the used container is not reused but is discarded or incinerated. If the amount of waste and incineration increases, there is a risk of environmental pollution. In addition, since it cannot be reused, the cost of the container is high, which is considered to be a big economic problem.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. The container is cleaned with expensive clean water, clean solvent and clean air. It is an object of the present invention to provide a clean container which does not require liquefaction, has little environmental pollution due to disposal of the container, and is excellent in economic efficiency.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a container main body (hereinafter referred to as "container A") having an opening portion that can be opened and closed and a thickness that is approximately the same as that of the container A are provided. Two
The container A is made of a film having a thickness of 000 μm or less so that the bag mouth portion that can be sealed corresponds to the opening of the container A.
And a bag body (hereinafter referred to as "bag body B") that is removably housed inside the bag body, and the cleaning degree in the bag body B is "particle size of 50 μm or more per 1 m ^{2 of the} inner surface thereof". The number of dust is 0, the number of dust of 25 to 50 μm is 500 or less, 5
The present invention provides a clean container having a number of dust particles of 25 μm or less of 2000 or less ”. Further, the present invention provides a container main body having an openable and closable opening in the upper part, and a bag mouth portion formed of a film having a thickness of 2000 μm or less so as to have a volume substantially equal to that of the container main body and capable of being sealed. Provided is a clean container for an anaerobic polymerizable liquid, which comprises a bag body which is removably housed inside the container body so as to correspond to an opening of the container body.

The present invention will be described in detail below. The feature of the present invention is that the bag B stored in the container A is
The degree of cleanliness of "particle size 50 per 1 m ^{2 of} its inner surface"
The number of dusts of μm or more is 0, the number of dusts of 25 to 50 μm is 500 or less, the number of dusts of 5 to 25 μm is 2000 or less ”, and the bag B has a thickness of 20.
It is formed of a film having a thickness of 00 μm or less. As a result, the desired effect of the present invention is obtained.

Conventionally, a bag body formed of a film having a thickness of 2000 μm or less is known. That is, a bag body is manufactured by a molding method such as an inflation molding method using a molding material such as polyethylene, polypropylene or polyester. However, the conventional bag body is made clear by this molding method.
The particle size is 50 μm per 1 m ² of the inner surface of the bag.
It is said that the number of dust is 50 to 5000, the number of dust of 25 to 50 μm is 500 to 100,000, and the number of dust of 5 to 25 μm is 2000 to 200,000 ”, which is far from the above strict standards. .. In addition,
To measure the number of dusts, put a cleaning solvent (water, xylene, etc.) in the bag to wash away the dusts, collect the washed-out dusts in the solvent with a 5 μm filter, and use a microscope to filter the dusts on the filter. The method of determining the number of dust is used.

Even if the inside of the bag thus manufactured is cleaned by the method for cleaning a container described in the above-mentioned "Prior Art", the cleaning degree is the same as described above. Strict criteria of "the number of dust particles with a particle size of 50 μm or more is 0, 25
It was not possible to satisfy the condition that the number of dusts of ˜50 μm is 500 or less and the number of dusts of 5 to 25 μm is 2,000 or less. Even if it is possible, this method cannot be economically adopted because it requires an extremely large amount of expensive clean water and clean air, and requires a great amount of work time. As described above, the present invention cannot be achieved with the knowledge of the conventional bag body.

As described above, the film is formed of a film having a thickness of 2000 μm or less, and the inside cleanliness is such that “the number of dust particles having a particle size of 50 μm or more is 0 per 1 m ² of the inner surface.
The number of dust particles of 25 to 50 μm is 500 or less, 5 to 2
The production of the bag B having the number of dust particles of 5 μm of 2000 or less ”requires an extremely difficult technique, but overcoming this difficulty, the bag B used in the present invention was obtained, and further, It is not easily achieved by a person skilled in the art from the conventional knowledge that the bag container B can be applied to the container A of the present invention as described above and a clean container having an extremely excellent effect can be obtained. ..

As described above, the cleanliness of the bag B of the present invention is "the number of dust particles having a particle size of 50 μm or more is 0 and the number of dust particles having a particle size of 25 to 50 μm is 1 m ² per 1 m ² of the inner surface of the bag B. Fifty
0 or less, 2000 or less for 5-25 μm dust ”
Is. A more preferable range is "0 number of dust particles with a particle size of 25 µm or more, 500 or less dust particles of 5 to 25 µm"
Is. The thickness of the film forming the bag B is 2000 μm or less, preferably 300 μm or less, and more preferably 100 to 20 μm. If it is too thick, the inflation molding process cannot be performed. in this way,
When the light bag B formed of a thin film is used, the amount of waste is reduced, and as a result, there is less environmental pollution and air permeability is better than before.

The internal volume of the bag B is preferably 5 liters or more, more preferably 10 liters or more, and particularly preferably 50 liters or more. Within this range,
Excellent operability, economy, and cleanliness. The shape of the bag body B is not particularly limited as long as the bag body B can be housed in the container A, and the bag body B is not broken at the time of filling the clean solution, storing after filling, transporting or the like. Not something.

The material of the bag body B is a film having a thickness of 2000 μm or less and can be formed into a bag body, and has a strength such that the bag body does not break during and after filling with the cleaning solution. All you have to do is Preferred are polymers such as olefin polymers such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polybutylene terephthalate and unsaturated polyester resins, polyamides such as nylon 6 and nylon 66, or , Vinylidene chloride resin, vinyl chloride resin, polystyrene, fluororesin, polyimide, 1,2 polybutadiene, etc., and these may be used alone or in combination of two or more. Particularly preferred polymers are olefin polymers such as polyethylene and polypropylene, polyethylene terephthalate, and polyesters of polybutylene terephthalate.

As described above, the cleaning degree is 1 m on the inner surface.
Per ² "0 dust particles with a particle size of 50 μm or more, 25
As a method for producing the bag B in which the number of dusts of ˜50 μm is 500 or less and the number of dusts of 5 to 25 μm is 2,000 or less ”, for example, as the molding material, clean control was performed at the above-described cleanliness degree. It is possible to use a manufacturing method under special conditions, in which a material is used and clean air is used at the time of molding the bag body B by inflation molding and further molding is performed under the clean air.

The shape of the bag B is not particularly limited, and examples thereof include a cylinder, a sphere, a box, an ellipse, a bag, and a prism, and the opening can be opened and closed. Is. The size of the opening is not particularly limited as long as it can sufficiently fill and seal the clean liquid. The opening / closing port having a structure for facilitating the filling or enclosing operation may be, for example, one having a structure of a stopper pig found in a chemical bottle or a screw cap portion.

The container A may be any container as long as it does not break during storage and transportation of the solution, and is, for example, a container made of paper, wood, plastic, rubber, iron, aluminum, stainless steel or the like. The shape of the container A is, for example,
Examples of the shape include bottles, petroleum cans, drums, and liquid transport containers that are generally used to store liquids, and these can be used as the container A. The opening of the container A has a structure that allows easy accommodation of the bag B, easy filling and removing operations of the clean liquid, and prevents the filled clean liquid from leaking. Of course, the openings generally used in known containers can be used.

Cleaner to be filled in the clean container of the present invention
Liquid is a liquid substance, such as water, inorganic chemicals,
A polymer solution, a solution containing a polymer and a drug, and the like, which do not pass through the film, can be mentioned. Specific examples include a coating agent, an acrylic solution, and raw materials used in their production.

When these cleaning solutions are liquids that cause anaerobic polymerization, they are thick even if they are made of metal or are made of plastic in a conventional container, so that they are exposed to the outside air. Oxygen does not permeate through the container and dissolve in the liquid, or even if it dissolves, it is not enough,
Therefore, there has been a problem that the components of the anaerobic clean liquid are polymerized. On the other hand, since the bag B of the present invention is formed of a thin film, it has excellent oxygen permeability. If a material having excellent oxygen permeability is selected as the material of the bag B, the oxygen permeability is further improved. The air permeability of the material of the bag B is 50 cc / m ³ · hr · atm (2
4 ° C., dry, 30 μm film) or higher) is preferable. Therefore, the bag B excellent in oxygen permeability and the container A
If oxygen or air is present during the period, oxygen can be sufficiently supplied to the anaerobic clean liquid filled in the bag body B. That is, the clean container of the present invention is an anaerobic cleaner.
It is extremely suitable as a liquid container. The container of the present invention may be filled with a solid substance, a gas, or the like, which requires cleanliness, in addition to the above-mentioned clean liquid.

[0019]

EXAMPLES Examples of the present invention will be described below. FIG. 1 schematically shows the overall configuration of the clean container according to the embodiment,
FIG. 2 shows a bag body 30 used in the clean container. Further, FIG. 3 shows the details of the portion A (attachment portion of the bag body 30 and the container body 10) of FIGS. 1 and 2, and FIG. 4 shows the portion A of the pipe fixing base 20 in place of the drum lid 13. A state in which the pipe introducing portion 40 is attached is shown.

As shown in the figure, the present clean container has a structure in which the bag body 30 is removably housed inside the container body 10. The container body 10 is a metal drum, and an opening having a circular cross section is provided at the upper corner thereof, and the mounting portion A is formed by the opening. As shown in FIG. 2, the bag body 30 is a bag formed of a polyethylene film having a thickness of 300 μm or less so that the bottom portion has a hexagonal shape, and the opening at the upper end (A portion in FIG. 2) is as described later. Can be sealed in
The bag body 30 is folded before use, and the inside thereof has “0 dust particles having a particle size of 50 μm or more, 500 dust particles having a particle size of 25 to 50 μm or less per 1 m ² of the inner surface,
The number of dust particles of 5 to 25 μm is 2000 or less ”. In addition, the bag body 30 is double-structured in this example in order to ensure strength. In the case of a solution that causes anaerobic polymerization, a cushioning material (foamed polyethylene, etc.) is used to secure an air layer between the container body and bag.
May be included.

When the bag body 30 is to be stored inside the container body 10, first, the drum lid body 13 of the mounting portion A is blown from above the mounting portion A in FIG. (See FIG. 3) is removed to open the container body 10. Next, the bag body 30 is inserted from the opening, and the protruding portion 31a of the nozzle 31 at the upper end of the bag body 30 is extended from the hanging portion 11b of the drum top plate 11 of the container body 10 as shown in FIG. It is locked to the part 11a. In addition, 15 is a resin stopper, by which the bag body 30 is sealed. Further, the cross section of the hanging portion 11b, the plug 15 and the like is circular, and these are arranged concentrically.

When the nozzle 31 at the upper end of the bag body 30 is locked to the drum top plate 11 in this way, next, after removing the stopper 15 in the presence of the same clean air flow as described above, as shown in FIG. Then, the female screw 20c on the inner peripheral surface of the lower portion of the pipe fixing base 20 having a circular cross section is screwed onto the male screw 11c on the outer peripheral surface of the upper portion of the drum top plate 11. As a result, the pipe fixing base 20 is attached to the opening of the container body 10. Next, the resin pipe introduction portion 40 is inserted into the cylinder above the pipe fixing base 20, the pin holes 21 and 41 formed on the peripheral walls of both are aligned, and then the both are fixed by a pin (not shown).

In this way, the pipe introduction part 40 is connected to the pipe fixing base 20.
When fixed to, then the filling / extracting nozzle shown in FIG.
The pipe 57 at the tip end side of 50 is inserted into the inside of the bag body 30 from the nozzle 31 via the pipe introducing portion 40, and the cleaning solution supplied from the pipe 60 side is filled. Here, the pipe 60 and the filling / extracting nozzle 50 are connected by respective flanges 61 and 51. In the figure, 53 is a pipe and 55 is a valve.
Also, in the above, the clean solution is immediately filled,
Before filling, the bag body 30 may be inflated with clean air.

When the bag 30 is thus filled with the cleaning solution, the filling / extracting nozzle 50 is pulled out from the bag 30, and then the pipe introducing portion 40 and the pipe fixing base 20 are reversed from the above. Remove from the drum top plate 11 by the procedure of. Then stopper
The tip side 15b of 15 is fitted into the opening of the nozzle 31 until the locking portion 15a extending from the outer periphery of the stopper 15 comes into contact with the upper surface of the extending portion 31a of the nozzle 31.

Next, a female screw 13c on the inner peripheral surface of the drum lid 13
3 is screwed onto the male screw 11c on the outer peripheral surface of the upper portion of the drum top plate 11, as shown in FIG. As a result, the drum lid 13 is attached to the opening of the container body 10, and the lower surface of the drum lid 13 prevents the plug 15 from coming off.

In this way, the clean solution of this embodiment is filled with the clean solution. The cleaning solution is withdrawn in the reverse order of the above. Further, as is clear from the above description, the hanging portion 11 of the drum top plate 11
The above-mentioned mounting portion A is constituted by b, the supporting portion 11a that extends from the hanging portion 11b, the drum lid 13, the protruding portion 31a of the nozzle 31, and the like.

In the above embodiment, the bag body is placed inside the drum can 10.
The present invention is not limited to such a case, but the bag body 300 whose inner surface is kept clean is stored in a polyethylene bottle 100 as shown in FIG. 6, for example. It also applies when. Further, although the mounting portion A of the above-described embodiment is configured as shown in FIGS. 3 and 4, other configurations may be used as long as they have the above-described functions.

[0028]

The clean container of the present invention has the following excellent effects. (1) It is excellent in operability and cost efficiency because it is not necessary to clean the container with expensive clean water or clean air for filling. (2) After use, the bag B may be replaced, and the container A can be reused. Therefore, the economy is excellent. (3) Since the bag B is formed of a thin film, the burden of the disposal process is reduced and the adverse effects of environmental pollution are reduced as compared with the conventional case where the entire container is discarded. (4) Effective as a container for an acrylic coating agent.

[Brief description of drawings]

FIG. 1 is an explanatory diagram schematically showing the overall configuration of a clean container of an example.

FIG. 2 is an explanatory diagram of a bag body 30 used in the clean container.

FIG. 3 is a cross-sectional view showing details of a portion A (a portion where the bag body 30 is attached to the container body 10) of FIGS. 1 and 2.

FIG. 4 is a cross-sectional view showing details of the portion A in FIGS. 1 and 2, in which a pipe fixing base 20 is attached instead of the drum lid 13 and a pipe introducing portion 40 is attached to the pipe fixing base 20. Show the situation.

5 is an explanatory diagram showing an outline of an example of a filling / extracting nozzle inserted into the pipe introducing section 40 of FIG. 4. FIG.

FIG. 6 is an explanatory diagram showing an overall configuration of a clean container according to another embodiment.

[Explanation of symbols]

10 container body, 30 bag body, attachment part of A bag body and container body, 11 drum top plate, 13 drum lid body, 15 plug, 31 bag body nozzle, 20
Pipe fixing base 40 Pipe introduction part, 50 Filling / extracting nozzle, 60 Piping,

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Koji Hashimoto 2-11-24 Tsukiji, Chuo-ku, Tokyo Japan Synthetic Rubber Co., Ltd.

Claims (2)

[Claims] 1. A container body having an openable and closable opening in the upper portion, and a thickness of 200 so that the container body has substantially the same volume.
A bag body formed of a film having a thickness of 0 μm or less, the bag mouth portion being removably housed inside the container body so that the bag mouth portion that can be sealed corresponds to the opening portion of the container body. The degree of cleanliness is 0, 25-50 μm for the number of dust particles having a particle size of 50 μm or more per 1 m ^{2 of the} inner surface of the bag.
A clean container in which the number of m dust is 500 or less and the number of 5 to 25 μm dust is 2000 or less. 2. A container body having an openable and closable opening in the upper portion thereof, and a thickness of 200 so that the container body has a volume substantially equal to that of the container body.
An anaerobic polymerizable liquid, comprising: a bag body formed of a film having a thickness of 0 μm or less, the bag body being removably housed in the container body so that a sealable bag mouth portion corresponds to the opening of the container body. Clean container.