JPH06298260A - Large-sized not-sewn double bag and method for manufacture - Google Patents

Abstract

PURPOSE:To improve the large-sized bag for mass transportation or storage in durability rather than appearance, and in the safety, productivity, and the cost by tightly tying a not-sewn tubular body at the longitudinal center and by folding back one half of it on the other half. CONSTITUTION:Applicable as a double bag is a tubular woven fabric of synthetic fiber, a tube of plastic film, or the like. A tubular woven fabric drawn from a roll, for example, is cut off to a length which is twice as long as the double bag to be made. Through holes 1, 2 are provided in the tubular fabric as required. At the longitudinal center the tubular fabric is tied tight 5 with a strong tying cord 4. A tying cord 6 is passed through the through holes 1 in the tubular part to form an outer bag (a) and a tying cord 7 is attached to the outer side at the edge of the opening of the tubular part to form an inner bag (b). Next, through the through holes 2 in the outer bag-forming part (a) two hanging belts 8, 8 are passed, first outside the bag from the tightly tied part 5 which forms the bottom, then inside, outside, inside, and outside so as to have the forward ends outside. Subsequently, the outer bag-forming part (a) is folded back from the tightly tied part 5 at the center, as shown by an arrow, on the inner bag-forming part (b) to complete the double bag.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a field belonging to one-way bags which is useful for rationalizing distribution related to mass-consumed materials mainly used for mass transportation or storage, and is used for civil engineering materials and the like. It can also be used in the field.

[0002]

2. Description of the Related Art A generally known one-way bag is a lower lid with a discharge port, or a round or square sewn with a lower lid as a bag bottom on a tubular body. However, in the case of a suspension belt, for example, a reinforcing cloth is applied to the sewn portion of the body portion where the four belts are attached. Also, in the case of rope hanging, the bag bottom is sewn in the same manner as above, and the hanging rope is sewn around the entire circumference of the opening edge of the full opening opening, and this is made into a drawstring drawing opening, and the two or four points are drawn. For example, the rope is projected from the mouth, and the rope of this projection is used as a hanging portion.

[0003]

In any of the above-mentioned conventional ones, in any case, from the place having the reinforcing part and requiring the accessory parts to the reinforcing cloth and the accessory parts,
It was necessary to attach the lower lid and sew the reinforcing part. And, the above-mentioned large bag with the reinforcing parts attached or the lower lid attached is not good in productivity because it takes a lot of time and effort to sew it, and there are many inspection and inspection points. It was Against this background, various types of products are marketed in the market, and cheap imported products are increasing year by year. The present invention was created as a result of various researches and experiments based on such a current situation, and its purpose is to make a large-sized bag used for mass transportation or storage etc. Even if it is not good, it has excellent durability, high safety, high productivity and low cost.

[0004]

In order to achieve the above object, the present invention solves the problem by making a large bag for mass transportation, storage, etc. into a double bag without sewing. I am trying. That is, the present invention provides a large bag without sewing, which is a double bag formed by binding a tubular body without sewing to the central portion in the length direction and folding one of the two back to the other side. The double bag has a structure in which a tie cord is provided at least at the edge portion of the outer bag side, and further, either side of the outer bag or the inner bag of the non-sewn tubular double bag. The suspension belt from the bottom of the binding is inserted through the multiple through holes provided along the inner side of the outer bag, and the tightening cord is inserted through the through hole provided on the outer edge of the outer bag and tied to the inner edge of the inner bag. It has a structure with a string attached. Further, as a method for manufacturing a large double bag without sewing, a tubular woven cloth or a synthetic resin film tube is used.
Cut the bag to twice the length and tightly bind the central part of this cut length to form the bottom. From this bottom, one side is the outer bag side, the other is the inner bag side, and the outer bag side It has a structure in which it is folded back on the inner bag side, and at least a lanyard is attached to the rim of the outer bag, and a tubular woven cloth or synthetic resin film tube is double the bag body. Cut to the length of
One half of the cut length is provided with a plurality of through holes in a row along the bag body, and a plurality of through holes along the mouth edge portion of this side, and the other edge A plurality of through holes are provided along the portion, and the central portion of such a double-length cylindrical body is tightly bound to form a bottom portion, and two hanging belts are attached to the bag body from the bottom portion. The outer bag side is folded back to the inner bag side to form a double bag, and one of the outer bag side is the outer bag side and the other is the inner bag side. It has a structure in which a strap is attached to a plurality of through holes provided along the section.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. INDUSTRIAL APPLICABILITY The present invention is a sewn large double bag, which is used for mass transportation or storage, is useful as a one-way bag for rationalizing distribution, and may be used for civil engineering work at times. It is a thing. The material used for the double bag is not particularly limited, but is a tubular synthetic fiber woven cloth, a synthetic resin film tube, or the like. First, a specific configuration will be described.

The one shown in FIG. 1 is obtained by cutting an original fabric (m) of a tubular woven cloth with a length twice as long as the length of the bag body of the double bag (A). On the side that should be the outer bag (a) on the left side from the center in the vertical direction, there are continuous through holes (1) for tying cords along the opening edge and at equal intervals along the length direction. The through holes (2) for hanging belts are provided in four rows, respectively. As shown in FIG. 2, the left outer bag (a ') side is provided with four through holes (1') for a lanyard along the opening edge and four inner holes at equal intervals. Through holes (3) for hanging belts, and on the side that should be the inner bag (b ') on the right side, through holes (2') for hanging belts are arranged in four rows at equal intervals along the length direction. Each is provided. The through holes (1), (1 '), (2) and (2') are provided by heat insulation.

FIG. 3 and FIG. 4 show the state of the step which is one step advanced to construct the double bag, and the one shown in FIG.
In the raw fabric (m) shown in Fig. 5, the central portion in the length direction is tightly bound (5) with a strong binding cord (4), and the tightening cord (6) is attached to the through hole (1) on the outer bag (a) side. And the binding string (7) is attached to the outside of the opening edge of the inner bag (b). Then, the two hanging belts (8) and (8) are inserted from the binding portion (5) which is the bottom into the through hole (2) of the outer bag (a) in the order of outer side → inner side → outer side → inner side → outer side, Make sure the tip is on the outside.
At this time, the respective hanging belts (8) (8) may be arranged at symmetrical positions in the circumferential direction and may or may not be wound around the binding portion (5).

In the one shown in FIG. 4, the original fabric (m ') shown in FIG. 2 is tightly bound (5') with a strong tying string (4 ') at the central portion in the lengthwise direction, and the outer bag (a). A tightening string (6 ') is inserted into the through hole (1') of the '), and a binding string (7') is attached to the outside of the opening edge of the inner bag (b '). Then, as in the case of FIG. 3, the two hanging belts (8 ′) and (8 ′) are attached to the inner bag (b ′) from the binding portion (5 ′).
Through the through hole (2 '). The one shown in FIG. 5 is different from the one shown in FIGS. 3 and 4 in that a hanging belt is not used, and the central portion of the original fabric (m ′) is tightly bound (4 ″) with a strong binding string (4 ″). 5 ”) on the left outer bag (a”),
Only a tightening string (6 ″) is provided on the opening edge, and the right inner bag (b ″) has four slits (9) at equal intervals in the length direction of the bag from the opening. ) Is only provided with a folding piece (9 ').

FIG. 6 is a double bag (A) in which the outer bag (a) shown in FIG. 3 is folded back from the central binding portion (5) in the direction of the arrow onto the inner bag (b). It is a commercial product. FIG. 7 shows the double bag (A) of the product shown in FIG.
After the contents are filled and tightly bound with the binding string (7) of the inner bag (b), the tightening string (6) of the outer bag (a) is tightened and the ends of the hanging belts (8) and (8) are tightened. It is a tightly bound part. FIG. 8 shows a double bag (A ') folded back from the central binding portion (5') of the outer bag (a ') shown in FIG. 4 in the direction of the arrow onto the inner bag (b'). , Hanging belts (8 '), (8') inserted through the through holes (2 ') of the inner bag (b')
Is inserted outward from the through hole (3) of the outer bag (a ′). The double bag (A ′) in the state of FIG. 8 is a product. FIG. 9 shows that the double bag (A ′) of the product in the state of FIG. 8 is filled with the contents, and the inner bag (b ′) is tied with the string (7 ′) and then the outer bag (a ′). ), And tighten the ends of the suspension belts (8 ') and (8').

In the case shown in FIG. 5, the outer bag (a ") is folded back in the direction of the arrow from the central binding portion (5") onto the inner bag (b ") to form the double bag (A"). To configure and use this double bag (A ″), use the body (1) on the body (10).
Fit a ring-shaped suspension belt (11) smaller than the circumference of (0). When the contents are filled in the double bag (A ″) in such a state, as shown in FIG. 10, the ring-shaped suspension belt (11) causes the trunk (10) to look like a cocoon ball at the center. After filling the contents, the folding pieces (9 ') formed by the slits (9) in the inner bag (b ") are folded inward for each object, and the opening edge of the outer bag (a") is closed. After being folded inward, it is tightened with a tightening string (6 "), and the end of the string is pushed into the inside of the tightening portion. The one shown in FIG. 10 becomes a sandbag when the contents are filled with earth and sand, and is used for civil engineering work, for example.

The one shown in FIG. 12 is used in the same manner as the one shown in FIG. 10, but as shown in FIG. 11, the long, non-sewn double bag (B) has a lengthwise direction. The slit-shaped mouths (12) and (12 ') for filling the outer bag (c) and the inner bag (d) are provided at evenly spaced positions so as to slightly overlap each other, Open end, slit mouths (12), (12 '), and slit mouth (1
2) and (12 ') are tightly bound beforehand with a strong binding cord. Such a long, non-sewn double bag (B) is used at a civil engineering construction site such as a soft ground reclaimed land, a road, a slope of a river, etc. 12) and (12 ′) are filled, the long double bag (B) becomes a bead shape as shown in FIG. In the above description, the binding at the central portion and the end portion of the original fabric, and further the binding between the slit-shaped mouths may be winding by wire for automation, and the wire at that time may be covered. It may or may not be.

As a tubular woven cloth which constitutes a double bag without sewing, a flat yarn cloth sheet of polypropylene or polyethylene, which is substantially inexpensive and excellent in strength, is used. 10 pieces (warp) / inch x 10 pieces (weft) / inch) will be used, but in civil engineering works, soft ground or landfills, roads, river slopes, etc. For construction work or seabed reclamation work, polypropylene flat yarn 1500 Dr, for example, 15 (warp) / inch x 10 (weft) /
It is desirable to use a cylindrical raw material having a strength equivalent to a inch. If the contents are light, polypropylene or polyethylene film is used.
By using a thick tube having a thickness of 10 to 10 μm and forming a double structure, a low-cost, double-layer bag for packaging without sewing can be obtained.

From the above-mentioned constituent materials,
Its use is wide-ranging, and it is not particularly specified as the contents to be filled, but it is mainly used for materials that are transported in large quantities, such as earth and sand, crushed stone, feed, cement, etc., and for large-scale storage, such as grains and feed. Furthermore, it is suitable for a bag for treating waste. In terms of weight, it is possible to transport or store at least 50 kg / bag to 2000 kg / bag. Also, a long cylindrical body, for example, a diameter of 50 cm to 100 cm and a length of 10 m to 2
About 0 m can be filled with concrete, mortar, crushed stone, etc. and used for construction work. In addition, as a constituent material, to the inner sewn tubular woven cloth, a tubular body of a predetermined length obtained by superimposing a tube of a synthetic resin film on the outside, is tightly bound at its central portion, and this tightly bound portion is It is possible to use one with one side folded over the other at the center, but this results in a quadruple bag, which is a long tubular body folded from the central binding part. In the sense of returning, it is basically the idea of a double bag.

[0014]

EFFECTS OF THE INVENTION The sewing-free large-sized double bag of the present invention has extremely large strength since the bag body has a double structure, and is therefore a heavy object such as earth and sand, crushed stone, cement grains, and feed. It is suitable for large-scale transportation or storage, etc., and at that time there is no sewing, so there is no need to take measures for sewing as in the conventional large-sized bag, and as a configuration, sewing with a sewing machine, reinforcement cloth, etc. Since it does not require this cloth, it can be provided at low cost.
Also, when manufacturing this large double bag, sewing process,
Since this cloth such as a reinforcing cloth is not necessary at all, the manufacturing process is simplified, the number of inspection points during the process is small, and the production efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an original fabric forming a double bag.

FIG. 2 is a perspective view of the same original fabric as another embodiment.

FIG. 3 is a perspective view showing a state of a step in the middle of the original fabric of FIG.

FIG. 4 is a perspective view showing a state of a step in the middle of the process from the raw fabric of FIG.

FIG. 5 is a perspective view showing a state of an intermediate step when a raw fabric different from the raw fabrics of FIGS. 1 and 2 is used.

FIG. 6 is a perspective view of a state of a process which is further advanced from the state of FIG. 3, that is, a final product.

FIG. 7 is a perspective view showing a case where the final product of the above is filled with contents and used.

FIG. 8 is a perspective view showing a state of a process further advanced from the state of FIG. 4, that is, a final product.

FIG. 9 is a perspective view showing a case where the final product of the same as above is filled with contents and used.

FIG. 10 is a perspective view of a double bag constructed from the state of FIG. 5, in which contents are filled and used.

FIG. 11 is a perspective view showing a long double bag with a part cut away.

FIG. 12 is a perspective view when the above double bag is used in a state of beads.

[Explanation of symbols]

 A, A 'Non-sewn double bag a, a' Outer bag b, b 'Inner bag c Outer bag d Inner bag m, m' Raw fabric 1,1 'Opening edge through hole 2,2' Length Directional through hole 3 Through hole for hanging belt 4,4 'Bundling string 5,5' Tightening part 6,6 'Tightening string 7,7' Tying string 8,8 'Hanging belt 9 Slit 9'Folding piece 10 Body Part 11 Ring-shaped hanging belt 12,12 'Slit-shaped mouth 13 Bundling cord

Claims (4)

[Claims] 1. A double bag constructed by tightly binding a center portion in a longitudinal direction of a non-sewn tubular body and folding one of them over the other side, and at least an outer bag of the double bag. A large, non-sewn double bag characterized by a lanyard on the side edge. 2. A non-sewn tubular body is tightly bound at its central portion in the lengthwise direction, and one is folded back to the other side to form a double bag, and the outer bag of this double bag or Insert the hanging belt from the binding bottom into the multiple through holes provided on either side of the inner bag, and tighten the lanyard along the rim of the outer bag and the rim of the inner bag. A large, non-sewn double bag characterized by tying strings. 3. A tubular woven cloth or a synthetic resin film tube is cut into a length twice as long as the bag body, and the central portion of this cut length is tightly bound to form a bottom portion. One of them is the outer bag side, the other is the inner bag side, the outer bag side is folded back over the inner bag side and overlapped, and a sewn large size is attached at least to the rim of the outer bag. Method for manufacturing a double bag. 4. A tubular woven cloth or a synthetic resin film tube is cut into a length twice as long as the bag body, and one of the cut lengths has a plurality of lengths along the bag body. A plurality of through holes are provided in a row, a plurality of through holes are provided along the rim portion on this side, and a plurality of through holes are provided along the other rim portion. The central part of the body is tightly bound to form the bottom, and two hanging belts are inserted from the bottom into the plurality of through holes in the bag, and one of the binding bottoms is attached to the outer bag side. , The other side is the inner bag side, the outer bag side is folded back to the inner bag side to form a double bag, and the tightening cord is inserted into the plurality of through holes provided along the rim of the outer bag side. A method for manufacturing a large, non-sewn double bag, characterized in that a binding string is attached to the rim of the inner bag.