JPH04201892A - Flexible container bag - Google Patents

Abstract

PURPOSE:To mount a bag, fill the bag with bulk material and inspect the damage of the bag easily and perfectly by providing the peripheral part of a supply port and the peripheral face of a cylindrical part with hollow belt parts, which expand into rings or ribs to shape and enlarge a bag body when a gas is pressed thereinto. CONSTITUTION:The peripheral part of a supply port 2 and the outer peripheral faces of both upper and lower ends of a cylindrical part 1A are provided with hollow belt parts 7, 8, 9 and a plurality of longitudinal hollow belt parts 10 communicating with the hollow belt parts 8, 9 at both upper and lower ends 8, 9 are provided at constant spaces on the outer peripheral face of the cylindrical part 1A. The hollow belt part 7 of the supply port 2 and one hollow belt part(the underside hollow belt part 9) of the cylindrical part 1A are equipped with air inlets 11 and 12, respectively. In the case of the hollow belt part 7 of the supply port 12, a belt piece 7A having airtightness is loosened in the width direction and its both side edges are stuck to the supply port 2 and the outer peripheral face of the port by such means as mounting or welding.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a flexible container bag used for transporting bulk materials such as powder or granules in large quantities.

[Conventional technology]

BACKGROUND ART Paper bag packaging of approximately 20 kg, flexible container bag packaging of approximately 500 kg to 1000 kg, or bulk vehicles of approximately 5 tons to 10 kg are used to transport bulk materials such as powder and granules.

Of these transportation methods, paper bag packaging accounts for the majority, but this is gradually decreasing due to the complexity of bag packing, high running costs due to the fact that paper bags are disposable, and the increasing amount handled. There is a tendency to

Although transportation by bulk vehicles has low running costs, it is not common because it requires silo facilities on the receiving side and the need to own bulk vehicles.

Compared to the above-mentioned paper bag packaging and bulk car packaging, flexible container bag packaging does not require special equipment for transportation and storage because it can handle a suitable amount.

In addition, flexible container bags can be used many times as returnable bags, and when empty, they can be folded into a small size, making them convenient for return shipping and storage.For this reason, transportation using flexible 7' container bags has become popular. It started to be done.

As shown in Figure 6, a flexible container bag 7l is a cylindrical or rectangular bag made of cloth that has the strength to withstand the weight of the bag and is coated with rubber or synthetic resin to make it airtight. , a substantially cylindrical supply port 2 with a smaller diameter than the body IA on the top surface, and a discharge port 3 with substantially the same shape and the same size as the supply port 2 on the bottom surface.
The openings 2 and 3 are tied shut as shown by chain lines 2A and 3A.

[Problem to be solved by the invention]

However, the flexible container bag packaging described above also has problems. The following is a detailed explanation of the problems involved in handling bar materials such as powder and granules.

In order to fill a flexible container bag with loose materials, as shown in FIG.
While hanging it via a hook 5 etc., the supply port 2 is
It is attached to the outer periphery of the paddy supply chute 6 which opens downward at a height of about 1300 to 1500 meters above the floor, and even when it is filled with grains, its weight pulls the supply port 2 down to the supply chute 6. It must be secured in some way to prevent it from falling off.

As mentioned above, the flexible container bag 1 is a cloth bag coated with rubber or synthetic resin, so it has an irregular shape and is quite heavy, so it must be fixed at eye level by the worker. The work is extremely difficult to carry out and requires at least two workers.

Next, the flexible container bag 1 is supplied from the supply chute 6 through the supply port 2 into the trunk 1A, but as shown in the figure, the flexible container bag 1 stretches under its own weight and becomes longer than its original state, and its lower end is It hits the floor and bends over.

Since this does not allow for complete filling, a method is adopted in which the flexible container bag 1 is pulled up together with the supply chute 6 to a height that does not touch the floor even when stretched, and then lowered as the supply progresses.

- However, this method requires equipment to raise and lower the flexible container bung 1 and the supply chute 6 at the same time, which increases equipment costs. Therefore, the supply chute 6 is fixed at a certain height position, and the worker manually inserts the trunk I so that the lower end of the flexible container bung 1 is not visible on the floor.
It is also practiced to feed loose items while pulling A sideways and spreading it out.

It is also possible to inflate the body of the flexible container bag by blowing air into it before supplying bulk materials, but this is not very effective since the blowing of air must be stopped when supplying bulk materials.

The flexible container bag 1 needs to be inspected from time to time to see if it is damaged. The inspection method involves lifting the flexible container bag 1 with the supply port 2 closed and the discharge port 3 open, with the discharge port 3 facing down, and looking into the dark body IA through the open discharge port 3 to check for light leakage. This is done by checking the presence or absence.

During this inspection as well, since the flexible container bag 1 is stretched vertically, a person manually pulls the trunk IA sideways to adjust the shape, and another worker visually inspects it. In other words, the inspection requires two people, which is time-consuming and the inspection results are not perfect.

In view of the above-mentioned problems in conventional flexible container bag packaging, the present invention makes it possible to easily and completely attach a flexible container bag to a supply chute, fill bulk materials into the flexible container bag, and inspect the bag for damage. The purpose is to provide flexible container bags that can.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides the following features:
It is provided with a hollow band that expands into a ring or rib shape when gas is pressurized to shape and expand the bag body.

The above-mentioned hollow band portion may be constructed by attaching a hose.

Alternatively, a hose receiving part may be attached to a predetermined position on the periphery of the supply port and the circumferential surface of the body, and a hose with a closed end may be inserted into the hose receiving part to pressurize air into the hose. can.

[For production]

When air is forced into the hollow band at the peripheral edge of the supply port, the hollow band expands to expand the supply port into a cylindrical shape and maintain its open state, making it easier to attach the supply port to the supply chute.

Next, when air is forced into the hollow band on the circumference of the body with the discharge port closed, the hollow band expands and shapes the body in the circumferential and vertical directions, allowing the filling of loose materials. Make it smooth.

After filling the bag with loose items, the air is removed from the hollow band to reduce unnecessary protrusion (this makes it ready for transportation, storage, and folding of the empty bag after it is emptied).

In an embodiment in which a removable hose is provided instead of the hollow band, the hoses are inserted into the hose receiving parts on the periphery of the supply port and a part of the circumference, and air is supplied to the hose held on the periphery of the supply port. When press-fitted, the supply port expands into a circular shape due to the expansion of the hose.

When air is forced into a hose held on the circumferential surface of the body, the hose expands and the body expands in the circumferential direction and the vertical direction, shaping the body.

After filling with bulk material, remove the air from the hose and remove it from the hose receiving part.

When inspecting a flexible container bag for damage, close the supply port and pressurize air into the hollow band around the body or into a hose held around the body to expand the body. The device is lifted up with the discharge port facing down and the inside is peered through the discharge port.

〔Example〕

The specific structure of the flexible container bag of the present invention will be explained with reference to the drawings.

In the embodiment shown in FIG. 1, hollow band portions 7, 8, and 9 are provided on the peripheral edge of the supply port 2 and on the outer peripheral surfaces of both upper and lower ends of the body portion IA. Furthermore, a plurality of longitudinal hollow band parts 1O are provided at regular intervals on the outer circumferential surface of the body part IA, which pass through the hollow band parts 8 and 9 at both the upper and lower ends. The hollow band portion 7 of the supply port 2 and any hollow band portion of the body portion IA (the lower hollow band portion 9 in the embodiment) are each provided with an air inlet 11-12.

To explain the structure of the hollow band part 7 of the supply port 2 as an example, the example in FIG. It is fixed to the outer circumferential surface by means such as adhesive or welding.

In the example shown in FIG. 3, a hose 7B is housed in a hollow band 7 provided in the same manner as in the example shown in FIG. 2, just like a tire tube. The hose 7B is connected in a ring shape, and the air inlet 11 is attached to the hose 7B through the strip 7A. Strip 7A in this example
The hose 7B does not need to be airtight, and the hose 7B may be attached directly to the outer peripheral surface of the supply port 2 by adhesive or the like without using a strip.

The hollow band portions 8, 9, and 10 on the outer peripheral surface of the body are also provided in the same manner as in the above example. The circumferential hollow bands 8 and 9 are provided not only in the upper and lower 28 locations shown in the first figure, but also in the middle, and together with the longitudinal hollow bands 1O, the hollow bands are arranged in a grid pattern. You can also do this.

When air is injected through the air inlets 11-12, the hollow band 7 expands into a ring shape like a floating ring or a tire tube, expanding the supply port 2 into a cylindrical shape, and the hollow band parts 8, 9.・1
0 expands into a rib shape to widen the trunk 1A, and the shape of the flexible container bag 1 is adjusted. 8・
9 and 10, but if a hollow band with the same function as the hollow band can be attached or removed as needed, there would be no need to provide a hollow band in each flexible container bag.

Figures 4 and 5 show the supply port portion of an embodiment in which a hollow band portion is provided in a removable manner.
6 to 8 ring-shaped hose receiving parts 1 are placed at equal intervals around the periphery of the
4 is installed. A separate hose 13 is provided which has a diameter that can be inserted into the hose receiving part 14 and a length close to the circumference of the supply port 2, and which is closed at both ends. Moreover, hooks 15, 15 that engage with each other are attached to both ends of the hose 13.

The hose 13 containing no air is sequentially inserted into the hose receiving part 14 and hooked with hooks 15 to make the hose 13 into a ring shape. When air is blown into the injection port 11, the hose 13 expands like a tire tube, and the supply port 2 expands into a cylindrical shape.

A hose receiving part is attached to the outer circumferential surface of the body IA in the same manner as around the supply port 2, and a plurality of hoses with lengths corresponding to the circumference and height of the body are prepared.

After attaching the supply port to the supply chute or after filling the flexible container bag with bulk materials, remove the air from the hose and pull it out from the hose receiving part (.

〔Effect of the invention〕

Since the flexible container bag according to the present invention has the above structure, the supply port expands into a cylindrical shape by pressurizing air into the hollow band around the supply port, and the supply port can be easily attached to the supply chute. can.

By keeping the discharge port closed and forcing air into the hollow band on the circumferential surface of the body, the body is expanded and shaped in the circumferential direction and the vertical direction, and loose materials are filled smoothly and reliably.

After filling the bag with loose items, removing the air from the hollow band reduces the unnecessary protrusion, so there is no problem during transportation or storage, and it is easy to fold the bag after it is empty.

If a removable hose is provided instead of a hollow band, the cost can be reduced by simply attaching a hose receiving part to each flexible container bag, and there is no need to prepare a hose for each bag. can.

In addition, by closing the supply port and pressing air into the hollow band of the body or the hose held on the circumference of the body, the inside of the expanded and shaped body can be seen through the outlet, making it possible to create a flexible container bag. The presence or absence of damage can be easily inspected.

[Brief explanation of the drawing]

Fig. 1 is a front view of the flexible container bag of the present invention attached to a supply unit and expanded, Fig. 2 is an enlarged longitudinal sectional front view of the supply port, and Fig. 3 is another view of the hollow band at the supply port. FIG. 4 is an enlarged vertical front view of the supply port equipped with a removable hose instead of the hollow band, FIG. 5 is a plan view of FIG. 4, and FIG. 6 is the conventional one. Figure 7 is a front view of a conventional flexible container bag attached to a supply chute. 1...Flexible container bag, IA...body, 2...supply port, 2A...closed supply port, 3...
・Discharge port, 3A...Closed discharge port, 4...Hanging ring,
5... Hook, 6... Supply chute, 7.8.9.
DESCRIPTION OF SYMBOLS 10... Hollow band part, 7A... Band piece, 7B... Hose, 11-12... Pneumatic inlet, 13... Hose,
14...Hose receiving part, 15...Hook. Figure 1 Figure 2 Figure 3 Copper 4 Figure 5 Figure 6 Figure 7

Claims (3)

[Claims] (1) A flexible container bag that is provided with a hollow band on the periphery of the supply port and the circumferential surface of the body that expands into a ring or rib shape by press-fitting gas to shape and expand the bag body. (2) The flexible container bag according to claim (1), wherein a hose is attached to form a hollow band portion. (3) At a predetermined position on the periphery of the supply port and the circumferential surface of the body,
A flexible container bag equipped with a hose receiving part that removably holds a hose with a closed tube end that expands into a ring or rib shape by pressurizing gas to shape and expand the bag body.