JPS5842271Y2 - one way back - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a one-way bag for storing and transporting bulk cargo, particularly free-flowing powder or granular materials.

That is, in this case, a vertical notch is provided in the opening of the main body to form three front and rear flaps, and the front and rear flaps in the center are sewn along the notch to form a central slot. At the same time, fold the outer edge bases of the front and rear flaps in the left and right parts inward and sew parallel to the bases of both side edges of the flap in the center part,
In addition, the outer and inner edges of the left and right front and rear flaps are sewn together, the upper ends of the left and right front flaps are sewn together, and the upper ends of the left and right rear flaps are also sewn together to form separate loop-shaped hanging parts for the front and rear flaps. The object is to provide a convenient one-way bag by simply molding a central input port and front and rear hanging parts from the same raw fabric.

The embodiments shown in the drawings will be described below.

The main body of the one-way bag of the present invention is formed into a cylindrical shape using a plain weave sheet of polyethylene or polypropylene, or an endless weave sheet, and if necessary, the sheet is laminated.

Other inner bags may be used in combination as necessary.

FIG. 1 shows the opening of a wrapping body 1 made of an endlessly woven raw fabric.

2.2... is a vertical notch provided in the opening, and the flap 3.3 forms the central input port 6.
' and flaps 4゜5.4' that form hanging parts on both the front and back sides.
, 5'.

A cylindrical central input port 6 is formed by sewing both side edges of the front and rear flaps 3, 3' in the central portion.

The front and rear flaps 4, 4', 5, 5' on the left and right sides are
The outer edge root portions 4a and 5a are folded inward toward the inside of the main body, and as shown in FIGS. 4 and 5, the both side edge root portions 3a of the flaps 3 and 3' in the central portion.

3a (only one side shown), and the outer edges 4b, 4b', 5b, 5b' are sewn parallel to the inner edges 4c, 4c', 5c, 5c', respectively, and the left and right front edges are sewn parallel to each other. The upper ends of the flaps 4 and 5 are sewn together to form a loop-shaped hanging part on the front side, and the upper ends of the rear flaps 4/ and 5 are also sewn together to form a loop-shaped hanging part on the rear side. There is.

The upper ends should be sewn together in a multi-curved manner.

Although not shown, the bottom of the main body is formed by applying and sewing another material for forming the bottom, or by sewing the peripheral edges of the bottom of the main body together.

Its structure is arbitrary, and a discharge port may be provided at the bottom if necessary.

A reinforcing cloth may be added during sewing.

Thus, when forming the center slot 6, the closure tape 7 is sewn together, and when parallel sewing is performed, the hanging portion root fixing tapes 8, 8 are sewn together.

The contents are loaded through the input port 6, but before loading, the base of the hanging section is tied up in advance with a hanging section fixing tape 8, and after the loading is finished, the loading port 6 is tied up using a closing tape 7. The state is shown in FIGS. 6 and 7.

In this way, the hanging part is used for transportation, but when loading the contents, the hanging parts are formed to be separated on both sides, sandwiching the input port 6, so that the contents can be loaded smoothly. In addition, since the hanging part is bent at a preferable angle and sewn at the upper end, it has excellent strength during transportation.

In other words, as shown in Fig. 3, the upper end of the hanging part is bent and sewn, so the force generated when lifting acts almost uniformly as shown by the arrow f. If we look at Fig. 4, the force acts outward from the base of the hanging part at a certain angle, and for this reason, no appreciable force acts on the parallel stitched part5.

The parallel stitched parts are flaps 3, 3' and flaps 5 and 5' (on the opposite side, flaps 3, 31, 4 and 4).
′), which normally would be a weak point in terms of strength, but in this case, not only is this a parallel stitch, but as mentioned earlier, the force acting on it is From this three-pronged part,
There is no possibility that the bag will be damaged.

In addition, in the hanging part, the outer side A, where a relatively large force is applied, is formed by sewing both sides of the flap, whereas the inner side B is formed by sewing both sides of the flap.
Since it is simply folded, it is strong, and this makes it reasonable to deal with the distribution of force acting on the hanging part.

However, the condition of the hanging part shown in Figure 3 is for convenience of explanation, and when actually hanging a bag, the sewn parts at the top end may overlap, and the condition of the hanging part may overlap. The base is bound with fixing tape 8, but the relationship described above remains unchanged.

In any case, the present invention creates vertical notches in the opening of the main body to form three front and rear flaps, and sews the front and rear flaps in the center of the second-order flaps along the notches. At the same time, fold the outer edge bases of the front and rear flaps on the left and right sides inward and sew parallel to the bases of both side edges of the flaps in the center, and then A one-way bag made by sewing the edges and inner edges, sewing the upper ends of the left and right front flaps together, and sewing the upper ends of the left and right rear flaps together to form separate loop-shaped hanging parts in the front and back. The central slot and the front and rear hanging parts can be easily formed from the same material by cutting the opening of the bag and sewing the flaps together. It is easy to use, allows for smooth loading of contents, and has the characteristics of being able to provide a one-way bag with excellent strength.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the opening of the main body. FIG. 2 is a front view showing the sewn center slot and loop-shaped hanging part. FIG. 3 is a partial plan view of the loop-shaped hanging portion. FIG. 4 is a side view showing the sewn center slot and loop-shaped hanging part. Figure 5 is an enlarged view of the parallel stitched part. FIG. 6 is a perspective view of the proposed one-way bag with contents loaded therein. FIG. 7 is a state diagram of the one-way bag according to the present invention during transportation. 1...The mounting body. 2... Cut, 3.3', 4°4', 5.5
'...Flap, 6...Central input slot.

Claims (1)

[Scope of utility model registration request] A vertical notch is provided in the opening of the main body to form three front and rear flaps, and the front and rear flaps at the center of the flaps are sewn along the notch to form a central slot. , Fold the outer edge bases of the front and rear flaps in the left and right parts inward and sew parallel to the bases of both side edges of the flap in the center part, and sew the outer and inner edges of each of the left and right front and rear wraps, This one-way bag is made by sewing the upper ends of the left and right front flaps together, and sewing the upper ends of the left and right rear flaps together to form separate loop-shaped hanging parts at the front and rear.