JPH0664604A - Method for injecting liquid product into container - Google Patents

Abstract

PURPOSE:To inject a liquid product while the contact between the air in an upper space and the liquid surface of a container is prevented with good operativity by housing a floating lid having an injection hole into the container, injecting the liquid product from the injection hole to between the floating lid and a bottom in the container and having the floating lid floated according to a rise of the liquid surface. CONSTITUTION:An insertion tube 2 with a flange 22 provided in the vicinity of the upper end of a short tube 21 having an opening on a side is set at a bottom of an empty container 1, a floating lid 3 having a center hole 31 is inserted into the insertion tube 2 at the center hole 31, and further a tip of a liquid product injection tube 4 is inserted into the insertion tube 2. Liquid product is injected from the liquid product injection tube 4, the floating lid 3 is raised according to a rise in a liquid surface of the liquid product A as the injection proceeds, and a predetermined amount of the liquid product is injected. Then the liquid product injection tube 4 is removed from the container 1 and an inner tank mouth and an outer tank mouth of the container 1 are closed with an inner lid 111 and an outer lid 121, respectively, thereby completing putting the liquid product into the container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for injecting a liquid product, such as an adhesive, which causes a skin phenomenon by contact with air into a container.

[0002]

2. Description of the Related Art When a liquid product is filled in a container and stored, in the case of an adhesive or the like, the liquid surface of the upper part of the container is dried by contact with air and a skinning phenomenon occurs, and this skin is in transit. In some cases, the liquid level may fluctuate and mix into the inside of the product, resulting in deterioration of the quality of the product.

In order to eliminate such inconvenience, it is necessary to block the contact between the air in the upper part of the container and the liquid surface of the product during the storage of the product. Conventionally, as shown in (a) to (c) of FIG. As shown, various proposals have been made.

In the case shown in FIG. 6 (a), after the liquid product A'is filled in the container 1 ', a flexible floatable sheet 3' (for example, a foamed plastic sheet) is opened from the mouth of the container. -G) is put in the upper space a'in the container 1 ', and this is spread on the liquid surface to close the container mouth.

In the case shown in FIG. 6B, a plastic bag 30 '(for example, a polyethylene bag) whose both ends are open is inserted into an empty container 1'while holding the mouth-tightening portion, and the mouth is opened. After inserting the product injection nozzle from the tightening part and injecting the product A'to the predetermined liquid surface, pull out the product injection nozzle, expel the air from inside the bag 30 ', and then tighten the bag tightening part with a rubber band or the like. I'm tied up with b '.

In the case shown in FIG. 6C,
A plastic bag is used like the one shown in (b), but a large bag 31 'whose lower end reaches the inner bottom of the container
Are using.

In the one shown in FIG. 6D, a flexible mouth-fastening portion is provided in the upper portion in place of the above plastic bag.
Plastic molding 3 having a discharge cap at the bottom
2'is used, and the mouth-closure part is as flexible as the above plastic bag, and the air and product liquid in the upper part of the container are the same as in the case of (b) or (c) of FIG. Blocks contact with the surface. In this system, unlike the case where a plastic bag is used, the contact between the inner surface of the container and the liquid product is eliminated by the plastic molded body 32 'to facilitate the cleaning of the container when the container is reused.

Further, in the one shown in FIG. 6 (e), a drum can is used as the container 1 ', a bottomed plastic bag 33' is inserted into the drum can, and the plastic bag 33 'is inserted.
After a predetermined amount of the liquid product is injected into the inside by the liquid product injection nozzle, the mouth tightening portion is tightly bound with a rubber band or the like b'in the same manner as shown in (b) to (d) of FIG.

[0009]

However, in the one shown in FIG. 6 (a), the liquid product A'is stored in the container 1 '.
After pouring the solution into the narrow space a'in the upper part of the container, the foamed plastic sheet 3'is deflated from the narrow container mouth and must be spread over the liquid surface. Failure is unavoidable unless careful and slow, careful work is inferior and considerable skill is required.

In the case shown in FIG. 6B, the plastic bag 30 'hangs down so that the liquid product is likely to flow outside the bag 30'. To prevent this, the bag 3 is used.
It is necessary to hold 0'in the container 1'in an expanded state,
It requires a special jig and the work is complicated.

On the other hand, in the case shown in FIG. 6C, since the lower end of the plastic bag 31 'reaches the bottom of the container 1', the plastic bag 3 of the liquid product A'is formed.
1'It is possible to eliminate wraparound to the outside, but since the bag 31 'is large, when the liquid product is used, the mouth of the container is easily closed by the bag, and it is difficult to take out the smooth liquid product.
A considerable amount of liquid product remains inevitable.

Further, in the one shown in FIG. 6D, the lower half portion has a shape-retaining plastic molded body 3.
Since the 2'is used, it is difficult to insert and remove the plastic molded body, and the upper part is soft, so it is easily damaged, and internal cleaning is also difficult, and it is difficult to reuse, and the one-way method is used. There is no choice but to use it at high cost.

Further, in the one shown in FIG. 6 (e), the work of previously inserting the plastic bag 33 'into the drum 1', the closing portion of the plastic bag 33 ', and the air inside the plastic bag 33' are The work of tying up with a rubber band or the like b ′ while being driven out, and the work of attaching the lid of the full open are complicated.

An object of the present invention is to provide a liquid product in a container, which has good workability and enables the liquid product to be filled in the container in a state where the contact between the air in the upper space of the container and the liquid surface is blocked. To provide a method of injecting into.

[0015]

According to the method for injecting a liquid product into a container according to the present invention, a floating lid having a liquid product injection hole is housed in the container, and a liquid product injection pipe is inserted into the liquid product injection hole of the floating lid. Is inserted, the liquid product is injected from the injection pipe between the floating lid and the bottom surface in the container, and the floating lid is floated as the liquid level of the liquid product rises.

[0016]

[Function] The floating lid is placed on the liquid surface of the liquid product by placing the floating lid in the empty container and injecting the liquid product with the liquid product injection pipe inserted in the hole of the floating lid. The contact with the air just above the floating lid is prevented.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The liquid product handled in the present invention is a liquid substance that causes a skin phenomenon by drying due to contact with air,
For example, vinyl acetate type, acrylic type, polyvinyl alcohol type, cellulose type, polyvinyl acetal type, EV
There are adhesives of A type, olefin type, polyurethane type and the like.

FIGS. 1A to 1C are explanatory views showing respective work stages of the embodiment of the present invention. In FIGS. 1 (a) to 1 (c), 1 is a container, and a double container having an inner tank portion 11 and an outer tank portion 12 is used. A is a liquid product.

To fill the liquid product into the container according to this embodiment, first, in FIG.
At the inner bottom, the insertion tube 2 provided with the collar 22 near the upper end of the short tube 21 having the side opening as shown in FIG.
A floating lid 3 having a central opening 31 is inserted into the insertion tube 2
Then, the tip of the liquid product injection pipe 4 is inserted into the insertion pipe 2.

Next, the liquid product is injected from the liquid product injection pipe 4, and as shown in FIG. 1B, the floating lid 3 is floated by the rise of the liquid level of the liquid product A as the injection progresses. If a predetermined amount is injected, as shown in (c) of FIG.
The liquid product injection pipe 4 is pulled out from the container 1, and the inner tank opening portion and the outer tank opening portion of the container 1 are closed with an inner lid 111 and an outer lid 121, respectively, whereby the liquid product is filled into the container. To finish.

In the above, as shown in FIG. 3A, a liquid level sensor 5 (for example, ultrasonic type, electrode type, capacitance type, etc.) is installed outside the container mouth, and The level sensor-5 detects the rise of the liquid level of the product, and the detection signal causes the liquid product injection pipe 4 to rise in accordance with the rise of the liquid level as shown in FIG. 3B so that the liquid level reaches a predetermined level. Then, as shown in FIG. 3C, the liquid product injection pipe 4 is placed in the container 1.
It is also possible to pull out from the inside and close the mouth of the container 1.

As shown in FIG. 4A, the container 1
Position slightly lower than the final liquid surface level (0.5 to 50
Arms 6, ... Are projected at a lower position within a range of about 0 mm, the floating lid 3 is placed on the arm, and the liquid product injection pipe 4 is placed in the central hole 31 of the floating lid 3. The tip portion is inserted, and in this state, the liquid product A is injected from the liquid product injection pipe 4 as shown in (b) of FIG. 4, and the product liquid is supplied as shown in (c) of FIG. When the surface reaches a predetermined position slightly above the arm 6 position, the liquid product injection pipe 4 can be pulled out from the container, the funnel 4 can be taken out from the container 1, and the mouth of the container 1 can be closed. .

Further, as shown in FIG. 5A, the funnel 4
(Liquid product injection pipe) is set so that its tip is located slightly below the arm 6 and, as shown in (b) of FIG. 5 and (c) of FIG. 5, through this funnel 4. It is also possible to inject the liquid product A from the product injecting nozzle 41 and, after injecting a predetermined amount, close the mouth of the container 1.

The embodiment shown in FIGS. 3A to 3C, the embodiment shown in FIGS. 4A to 4C and the embodiment shown in FIGS. 5A to 5C. According to the embodiment shown in (c), the immersion depth of the tip of the liquid product injection pipe 4 into the liquid product A can be made sufficiently small, and after the predetermined amount of the liquid product is injected, the liquid product injection pipe 4 can be quickly Even if the liquid product is taken out, it is possible to avoid dripping of the liquid drop from the tip of the liquid product injection pipe, which is advantageous for speeding up the work.

In the above description, if the floating lid 3 floats on the liquid product and does not contaminate the liquid product,
Appropriate ones can be used. For example, a foamed plastic sheet, a plastic sheet to which a foamed plastic block is attached, or the like can be used.

In the case of using the arms 6, ... In the above-mentioned embodiments, it is desirable that the arm be upside down in order to facilitate the cleaning of the inside of the container. It is preferable to provide a hole for hooking a hook to erect the arm.

In the above description, in addition to the double container (container having a narrow container upper surface) used in each embodiment, a cylindrical drum can or the like can be used as the container 1.

[0028]

As described above, in the method for injecting the liquid product into the container of the present invention, the liquid product is injected between the bottom of the container and the floating lid after the floating lid is housed in the empty container. It is easier to work than injecting the liquid product into the container and then inserting the floating lid into the upper space of the container.After injecting a predetermined amount of the liquid product, remove the liquid product injection pipe from the container. It only needs to be pulled out, unlike the one using a plastic bag, it does not require air bleeding or binding of a rubber band, and the work can be sufficiently simplified.

Further, the movement of the liquid product injection pipe according to the progress of the liquid product injection, the withdrawal of the liquid product injection pipe from the container, etc. can be easily automated by the use of the liquid level sensor. It can be semi-automated or automated.

Furthermore, the floating lid is inexpensive and advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing each work step of an embodiment of the present invention.

FIG. 2 is a sectional view showing an insertion tube used in the present invention.

FIG. 3 is an explanatory view showing each work step of another embodiment of the present invention.

FIG. 4 is an explanatory view showing each work step of another embodiment of the present invention.

FIG. 5 is an explanatory view showing each work step of another embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a different conventional example.

[Explanation of symbols]

 1 Container 3 Floating lid 31 Liquid product injection hole 4 Liquid product injection pipe A Liquid product

Claims (1)

[Claims] 1. A floating lid having a liquid product injection hole is housed in a container, and a liquid product injection pipe is inserted into the liquid product injection hole of the floating lid, and the liquid product injection pipe is inserted between the floating pipe and the inner bottom surface of the container. A method for injecting a liquid product into a container, which comprises injecting a liquid product and causing a floating lid to float as the liquid level of the liquid product rises.