JPS584873Y2 - Upper cover of flexible container - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an upper cover of a flexible container formed of a flexible sheet material in the form of a bag and used for transporting, storing, etc. powder and granular materials.

BACKGROUND ART Conventionally, covers have been used to cover the top surface of flexible containers to prevent water from entering through an injection port provided on the top surface of the flexible container when the containers are stored in the open or transported during rainy weather.

The most common type of cover used is a cap type, in which a cap separate from the flexible container is placed over the container from above.

However, in this case, it is difficult to bring the cap and the container body into close contact over the entire circumference of the cap, and there is a drawback that the cap is rolled up and water easily enters from there.

For this reason, a method has recently been proposed in which a half-cap-shaped cover is attached to the top surface of a flexible container and can be opened and closed using attachment parts provided at both ends of a portion of the cover, as shown in Japanese Utility Model Application Publication No. 55-27674. has been done.

However, in this case, in order to tightly fit the cover to the main body of the flexible container and prevent water from entering, it is necessary to
The mounting parts must be strongly tightened to lock the mounting part connector, which not only requires manual work twice, but also prevents the cover from working properly if the two mounting parts are not tightened in a well-balanced manner. It has the disadvantage that it does not adhere closely.

In other words, if one attachment part is strongly tightened to lock the coupler, the other attachment part will become distorted and a gap will likely occur.

In general, even if the container is filled with contents, the external shape of the container may not be exactly cylindrical or rectangular, depending on the amount and particle size of the contents, so there is a risk that a larger gap will occur.

In addition, filling work is generally performed at a relatively high place due to the location of the hopper, for example, about 2 meters above the ground, so workers must work on a step stool or ladder.
Locking the connector twice at different locations is complicated;
Moreover, it is difficult to tighten the caps with exactly the same degree of tightening, and as a result, the above-mentioned prior art has the problem that it is difficult to tightly fit the cap to the container body.

The present invention was devised in view of the above-mentioned circumstances of the prior art, and it simplifies the work of attaching the cover, and also allows the cover to be firmly attached to the main body of the container without being affected by the external shape of the container. To provide a top cover for a flexible container.

That is, the present invention includes a planar main body upper surface covering part that covers the majority part of the upper surface having the injection port of the main body of the flexible container and the upper end part of the main body body continuous thereto, and a body part covering part that extends vertically from the flat main body upper surface covering part. An upper cover for a flexible container consisting of: an edge of the cover's main body upper surface covering part and both edges of the body covering part that follow this are continuously joined from the upper surface of the main body to the upper end of the body. The cover is attached to the main body of the flexible container, the body covering part is further divided into a plurality of parts via the gore part, and the gore part is closed by the gore part/fixing device, so that the cover can be tightly attached to the body part. This is the top cover of a flexible container.

Hereinafter, the present invention will be explained in more detail according to the embodiments shown in the drawings.

Figures 1 to 3 are perspective views of the flexible container with the top cover of the present invention installed. FIG. 2 shows the state in the middle of this process.

The upper cover of the flexible container of the present invention includes a planar main body upper surface covering part 1 and a body part covering part 2 extending vertically from the main body upper surface covering part 1.
Furthermore, the trunk covering part 2 is divided into a plurality of parts via a gore part 3, and the gore part 3 is fixed in an appropriate open/closed state by a gore part fixing device 4. .

The planar main body upper surface covering part 1 covers the majority part of the upper surface 7 of the flexible container main body 5 having the injection port 6, and the upper surface 7 of the flexible container main body 5 is covered at the edge 8 of the main body upper surface covering part 1. is joined to.

Similarly, both edges 9, 9 of the trunk covering portion 2 following this edge 8
It is also joined to the upper end 10 of the body of the flexible container body.

In this way, the edge 8 of the main body upper surface covering part 1 and one and both edges 9, 9 of the body part covering part 2 following this are continuously joined from the main body upper surface 7 to the upper end 10 of the body, thereby forming the upper cover. will be attached to the main body of the flexible container.

The joining is preferably performed by high frequency welding, and in the examples shown in FIGS. 1 to 3, the cross-sectional view is constructed as shown in FIG. 4.

In other words, the flexible container has a structure in which the top surface 7 of the flexible container is composed of a donut-shaped sheet except for the injection port 6, and the top cover of the present invention is attached thereon.

However, the mounting structure of the upper cover is not limited to this, and may be the structure shown in FIG. 5.

In this case, the top cover covers the entire surface of the top 7 of the flexible container, and the top 7 of the flexible container with the inlet 6 is joined below the top cover.

With this configuration, the joint portion 11 will not be exposed to the outside, and there will be no risk of water entering from a defective joint.

The upper cover of the present invention is opened and closed as follows.

That is, after filling the inside of the container with the contents through the injection port 6, the injection port 6 is tied up and the state shown in FIG. 3 is stapled to the state shown in FIG. 2, and further to the state shown in FIG. 1.

At this time, although the outer shape of the container is not uniform depending on the amount of the contents filled and the particle size of the contents, the open/closed state of the gusset 3 is adjusted depending on the outer shape after filling, and the upper cover is attached to the body of the container. Closely contact.

The gore part 3 is fixed by a gore part fixing tool 4, and the drawing shows one using a hook and loop fastener.

In other words, the belt-like hook-and-loop fastener fixes the gore part 3 at any position depending on whether the gore part 3 is opened or closed.

In addition to hook-and-loop fasteners, strings, buttons,
You can use buckles, etc.

Further, if necessary, a means (not shown) for fixing the body part covering part 2 to the upper end 10 of the body part of the container body may be provided separately from or in addition to the gore part fixing means.

Since the upper cover of the flexible container of the present invention is constructed as described above, the gossamer part 3 is connected to the gossa part fixing member 4.
The cover can be firmly attached to the container body just by closing it, and it has excellent practicality because it is easy to operate.

In addition, when attaching the upper cover, the upper cover is continuously joined at the edge 8 of the main body upper surface covering part and both edges 9 of the body part covering part, and the joint part 11 is not provided with a gore, so that the joint part does not roll up. There is no risk of water getting in due to leaking.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3 are perspective views of a flexible container with a top cover of the present invention attached, and FIGS. 4 and 5 are cross-sectional views thereof. Explanation of symbols 1... Main body upper surface covering part, 2...
・・・Body covering part, 3... Gore part, 4...
- Grid part fixing tool, 5...Flexible container body, 6...Inlet, 7...Top surface of flexible container, 8...Top surface covering part of main body Edges, 9...Both edges of the body covering portion, 10...
... Upper end of body, 11 ... Joint part, 12 ...
...hanging belt.

Claims (1)

[Scope of utility model registration request] A flexible container consisting of a planar main body upper surface covering part that covers the majority part of the upper surface having the injection port of the main body and the upper end part of the main body body continuous to the main part, and a body part covering part hanging down from this. An upper cover of a container, in which the edge of the cover's upper body covering part and both edges of the body covering part are continuously joined from the upper surface of the body to the upper end of the body, thereby making the cover flexible. An upper part of a flexible container, which is attached to a main body of the container, further divides the body covering part into a plurality of parts via a gore part, and closes the gore part with a gore part fixing device so that the cover can be tightly attached to the body part. cover