JP2541053B2 - Continuous production method and production apparatus for cloth bag with string - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous manufacturing method and a manufacturing apparatus for a cloth bag with a string, which is preferably used for storing grains such as rice and wheat.

[0002]

2. Description of the Related Art Conventionally, cloth bags made of cloth woven from plastic tape are widely used for accommodating grains because of their characteristics such as high strength.

When this cloth bag is used, grains such as rice and wheat are stored in the cloth bag and then the opening is sealed. As a sealing method, a method of sewing the opening has been conventionally used. Although the sealing method by sewing is excellent in that the opening is reliably sealed and leakage of the internal contents is prevented from leaking, it is troublesome and time-consuming to sew, and is temporary. It is inconvenient when it is necessary to open it.

Therefore, as a cloth bag having a simple sealing means, there is known a cloth bag with a string c in which a binding band b is fixed along the edge of the opening of the cloth bag a as shown in FIG. As shown in FIG. 7, this cloth bag with a string c accommodates cereals, and after folding the end portion of the opening in a double or triple manner to form the folded portion d, the cloth bag a with the binding string b is formed.
Both ends protruding from both ends in the width direction are ligated and sealed.

[0005]

However, when the grains are packed in the cloth bag a and sealed, the grains are usually filled in the eighth bag or more of the cloth bag a, and therefore the folding portion is ligated even with the binding string b. Since d is not sufficiently close to each other, the sealed state near the widthwise center of the folded portion d is likely to be insufficient. In this case, if the bag is made of kraft paper, the kraft paper will have creases, so the folded part will surely maintain its shape,
Therefore, the opening is not reliably blocked and the contained items do not leak. However, in the case of a cloth bag, since the elasticity of the cloth is high and no creases are formed, the folded portion d does not have sufficient shape retention, and the restoring force for restoring the original state is the widthwise center of the folded portion d. It works stronger near the part.
For this reason, if an impact is applied to the thus-sealed cloth bag, the contents may easily leak to the outside.

Therefore, there is a demand for a cloth bag with a string that can be simply and surely sealed, and since the cloth bag is characterized by being inexpensive, it is required to be manufactured as cheaply and efficiently as possible. .

The present invention has been made in view of the above circumstances,
An object of the present invention is to provide a continuous manufacturing method and a continuous manufacturing apparatus capable of manufacturing a cloth bag with a string that can be simply and reliably sealed at low cost and with high productivity.

[0008]

In order to achieve the above-mentioned object, the present invention sequentially supplies a cross bag having one end in the length direction opened to a transfer device and both surfaces of the cross bag transferred by the transfer device. Reinforcing flexible plastic reinforcing tapes are provided along the widthwise direction at the edge of the opening, and the cloth bag and both reinforcing tapes are pressed against each other and fixed by heat bonding or an adhesive, and then the one reinforcing member is reinforced. A flexible plastic binding cord is supplied on the tape so that both ends project outward from the widthwise both ends of the cloth bag, and the one reinforcing tape and the binding cord are pressure-bonded to each other for heat bonding or bonding. A method for continuously manufacturing a cloth bag with a string, wherein the cloth bag is fixed by an agent, a transfer device for transferring a cross bag having one end in the length direction opened, and a transfer device for transferring the cloth bag. A flexible plastic reinforcing tape is supplied along the width direction to the opening edge of both surfaces of the loss bag, and both reinforcing tapes are pressed against the cloth bag and fixed to the cloth bag by heat bonding or adhesive. A reinforcing tape attachment device for supplying the flexible plastic binding cord so that both ends of the reinforcing tape are protruded outward from both ends of the cross bag in the width direction, and the binding cord is attached to the reinforcing tape attaching device. Provided is a continuous production device for a cloth bag with a string, which is provided with a string attaching device which is pressed against one of the reinforcing tapes and fixed by a heat adhesive or an adhesive.

[0009]

According to the manufacturing method and the manufacturing apparatus of the present invention, the cloth bags whose one end in the lengthwise direction is opened are sequentially supplied to the transfer device, and both surface opening edge parts of the cloth bag transferred by the transfer device are supplied. Then, each of them is supplied with a flexible plastic reinforcing tape along its width direction, and the cloth bag and both reinforcing tapes are pressure-bonded to each other and fixed by heat bonding or an adhesive. Supply a flexible plastic binding cord so that each of them projects outward from both ends in the width direction of the cloth bag, and press-fit the one reinforcing tape and the binding cord and fix them by heat bonding or adhesive. As a result, the cloth bag with a string can be continuously and efficiently manufactured, and since the material used is a flexible plastic tape and a binding string, the cost of the cloth bag is not so high. Rukoto is not.

In the cloth bag with a string produced by the present invention, flexible plastic reinforcing tapes are fixed along the width direction at both surface opening end edges of the cloth bag, and one of the reinforcing tapes is flexible. Both ends of the elastic plastic tie are fixed so as to project outward from both ends in the width direction of the cloth bag.

When the opening of the cloth bag with a string is to be sealed, the opening is folded in two or three layers to form a folded portion. At this time, the reinforcing tape fixed along the width direction of both surfaces of the cloth bag is folded inside. Then, the binding cords protruding from both sides of the folded portion are joined and ligated. In this case, since the reinforcing tape serves as a core when forming the folded portion, folding is easy. Also,
The folded portion in the ligated state has a pair of reinforcing tapes folded therein to reinforce the folded portion in the width direction, and since the reinforcing tape has flexibility, the reinforcing tape bent by the ligature is not The elastic force works, and therefore, the two reinforcing tapes act to firmly press the edge portion of the opening. Therefore, even if an impact force is applied to the folded portion, the folded portion can be easily unfolded and the opening does not occur. Therefore, the cloth bag with a string manufactured by the manufacturing method and the manufacturing apparatus of the present invention can be simply and reliably sealed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS. In the figure, reference numeral 1 denotes the present manufacturing apparatus, and 2 denotes an aligning apparatus of the manufacturing apparatus 1. The aligning device 2 has the opening end edges 4 and 4 ′ of the cross bag 3 shown in FIG.
The cloth bags 3 are arranged side by side at regular intervals, and the cloth bags 3 are supplied to the next step.

Reference numeral 5 denotes a transfer device for the cross bag 3. The transfer device 5 has one to several (two in the drawing) a pair of upper and lower belt conveyors 6, 6'and 6, 6 ', which are separated from each other by a predetermined distance. The belt conveyors 6, 6 ', 6, 6'are synchronized with each other, the upper belt conveyors 6, 6 are counterclockwise, and the lower belt conveyors 6', 6'are While traveling in the clockwise direction, the cross bag 3 supplied from the aligning device 2 is sandwiched between a pair of upper and lower belt conveyors 6, 6 ', 6, 6', and the belt conveyors 6, 6 ', 6 , 6'moves rightward in FIGS.

While the cloth bag 3 is being moved by the transfer device 5, the reinforcing tape attaching device 7 is provided on both surface opening edge portions 4 of the cloth bag 3 as shown in FIG.
Reinforcing tapes 8 and 8'are fixed to 4 ', and a binding strap 10 is fixed to one of the fixed reinforcing tapes 8 by a binding strap attaching device 9.

This reinforcing tape attaching device 7 is formed in a hollow cylindrical shape with reinforcing tape reels 11 and 11 'for winding and holding a long length of flexible plastic reinforcing tapes 8 and 8', and has an outer periphery. A large number of vacuum holes (not shown) are formed on the surface at predetermined intervals, and by depressurizing the internal hollow portion, the reinforcing tapes 8 and 8 ′ wound around the outer peripheral surface are sucked and the reinforcing tapes 8, Rotating drums 12 and 12 'that are rotatably provided with a suction mechanism (not shown) that holds 8'in close contact with the outer peripheral surface, and the reinforcing tape reel 1 described above.
While paying out the reinforcing tapes 8 and 8'from 1, 11 ',
Drive rollers 13, 13 'for supplying the reinforcing tapes 8, 8'to the rotary drums 12, 12', and the rotary drum 12,
First cutters 14 and 14 'for cutting the reinforcing tapes 8 and 8'supplied to the 12' to approximately the same size as the width of the cross bag 3.
And adhesive supply mechanisms 15 and 15 ′ for supplying hot melt adhesive onto the reinforcing tapes 8 and 8 ′, respectively. In the figure, 16 and 16 'are press rolls for pressing the reinforcing tapes 8 and 8'on the rotating drums 12 and 12'.

On the other hand, the binding device 9 is provided with a lace reel 17 and a rotating roller 18 which is rotatably disposed when the elongated flexible plastic strap 10 is wound and held.
And a pressing roll 19 for pressing the binding cord 10 against the rotating roller 18, and a hot-melt adhesive supply mechanism 20 for supplying the hot-melt adhesive to the binding cord 10, and binding with the rotating roller 18 and the pressing roll 19. While pressing the string 10, the rotary roller 18 and the press roll 19
The binding cords 10 are fed out from the binding cord reels 17 by rotating the binding cords 10 in opposite directions, and the binding cords 10 are wound around the rotary roller 18 and held. Further, the hot-melt adhesive supply mechanism 20 is controlled so that the hot-melt adhesive is supplied and applied to the binding cord 10 at a predetermined interval by the same size as that of the one reinforcing tape 8. Further, the second cutter 21 is arranged ahead of the rotary roller 18.

The cloth bag 3 transferred by the transfer device 5 first reaches the reinforcing tape attaching device 7. Here, the reinforcing tapes 8 and 8 ′ are pulled out from the reinforcing tape reels 11 and 11 ′ by the driving rollers 13 and 13 ′, respectively, and cut into the same size as the width of the cloth bag 3 by the first cutters 14 and 14 ′. , The pressing rolls 16 and 16 'and the suction mechanism of the rotating drums 12 and 12' are used to rotate the rotating drums 12 and 1 '.
2 ′ While being adsorbed on the outer peripheral surface, it moves integrally with the rotation of the rotary drums 12 and 12 ′, the hot melt adhesive is supplied from the adhesive supply mechanism 15 and 15 ′, and then the hot melt adhesive is applied in this manner. The reinforcing tapes 8 and 8'provided are respectively supplied to the opening edge portions 4 and 4'of the surface of the cloth bag 3 transferred by the transfer device 5 along the width direction thereof, and the reinforcing tapes 8 and 8'are also supplied. Rotating drum 1
2, 12 'are pressed together and fixed to the cloth bag 3 with a hot melt adhesive. The length of the reinforcing tapes 8 and 8'can be determined by the rotation speed of the drive rollers 13 and 13 ', and this rotation speed is determined by the drive rollers 13 and 13'.
It can be changed by exchanging a change gear (not shown) of the drive unit of the.

Next, the cloth bag 3 to which the reinforcing tapes 8 and 8'are fixed is transferred to the binding device 9. Here, the binding cord 10 is unwound from the binding cord reel 17 by pressure contact rotation of the rotating roller 18 and the pressing roll 19, and is pressed by the rotating roller 18 to the length of the reinforcing tape 8 from the adhesive supply mechanism 20. The melt adhesive is partially supplied at predetermined intervals. The binding cord 10 coated with the hot melt adhesive is fixed to one side of the reinforcing tape 8 along the width direction to the opening end edge portion 4 of the cross bag 3 which is laterally arranged and transported at regular intervals. The adhesive-applied portions are continuously supplied in a long shape so that they face each other, and are pressed against the reinforcing tape 8 by the rotating roller 18, and the adhesive-applied portions of the binding cord 10 are adhered onto the reinforcing tape 8. . The binding cords 10 thus bonded and connecting the cross bags 3 to each other are sequentially cut at the central portions between the adjacent cross bags 3 by the next second cutter 21, and the binding cords 10 as shown in FIG. The cross bag 22 with a string is manufactured in which both ends of the cross bag 3 project outward from both ends of the cross bag 3 in the width direction.

Reference numeral 23 in the figure denotes a counting and feeding device, which counts and sends out the finished cloth bag 22 with a string.

Therefore, according to the manufacturing apparatus 1 described above, the reinforcing bag 8, 8'and the binding cord 10 can be fixed to each other continuously while the cloth bag 3 is transferred by the transfer device 5.
The cloth bag 22 with a string can be efficiently manufactured.

In addition, the cloth bag 22 with a string produced
Since the reinforcing tapes 8 and 8'made of flexible plastic and the binding cord 10 are simply bonded to the cloth bag 3 by the hot-melt adhesive, the cost of the cloth bag does not increase so much.

When the opening of the cloth bag 22 with a string is to be sealed, the opening 23 is folded in two or three layers to form the folded portion 23. At this time, the reinforcing tapes 8 and 8'fixed along the width direction of both surfaces of the cloth bag 3 are folded inward. In this case, the reinforcing tapes 8 and 8'function as cores when forming the folded portion 23. It is easy to insert because it does.

Then, the binding cords 10 projecting from both sides of the folded portion 23 are put together and ligated as shown in FIG. 5, but the folded portion 23 in the ligated state has a pair of reinforcing tapes 8, 8 therein. 'Is folded to reinforce the folded portion 23 in the width direction, and the reinforcing tape 8,
Since 8 ′ has flexibility, its elastic force acts on the reinforcing tapes 8 and 8 ′ bent by ligation, and therefore the two reinforcing tapes 8 and 8 ′ are used to connect the opening edge portions 4 and 4 ′. Since it acts so as to hold it firmly, even if an impact force is applied to the folded portion 23, the folded portion can be easily unfolded and no opening occurs.

Therefore, the stringed cloth bag 22 manufactured by the manufacturing method and the manufacturing apparatus of the present invention can be simply and reliably sealed.

The configuration of the present invention is not limited to the above-mentioned embodiment, but various modifications can be made without departing from the spirit of the invention.

[0026]

According to the method and apparatus for manufacturing a cloth bag with a string of the present invention, a cloth bag with a string that can be simply and reliably sealed can be manufactured at low cost and with high productivity.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a manufacturing apparatus of the present invention.

FIG. 2 is a schematic plan view of the same embodiment.

FIG. 3 is a perspective view showing an example of a cloth bag used in the present invention.

FIG. 4 is a perspective view showing an example of a cloth bag with a string manufactured by the manufacturing method and the manufacturing apparatus of the present invention.

FIG. 5 is a perspective view showing a state in which the contents are put in a cloth bag with a string and ligated with a binding string.

FIG. 6 is a perspective view showing a conventional cloth bag with a string.

FIG. 7 is a perspective view showing a state in which the contents are put in a conventional cloth bag with a string and ligated with a binding string.

[Explanation of symbols]

 1 Continuous production device for cloth bag with string 2 Aligning device 3 Cross bag 4 Opening edge of cross bag 5 Transfer device 6, 6, 6 ', 6'Belt conveyor 7 Reinforcing tape attaching device 8 Reinforcing tape 9 and leash attaching device 10 Binding string 11, 11 'Reinforcing tape reel 12, 12' Rotating drum 13, 13 'Drive roller 14, 14' First cutter 15, 15 'Adhesive supply mechanism 16 Holding roll 17 Binding string reel 18 Rotating roller 19 Holding roll 20 Adhesive Supply Mechanism 21 Second Cutter 22 Cloth Bag with String 23 Counting and Feeding Device

Claims (2)

(57) [Claims] 1. A cloth bag whose one end in the lengthwise direction is opened is sequentially supplied to a transfer device, and at the same time, the cloth bag is transferred along the widthwise direction at both open end edges of the cloth bag transferred by the transfer device. After supplying the respective plastic reinforcing tapes, the cloth bag and the both reinforcing tapes are pressure-bonded to each other and fixed by heat bonding or an adhesive, and the both ends on the one reinforcing tape are both widthwise both ends of the cloth bag. A flexible plastic binding cord is supplied so as to project further outward, and the one reinforcing tape and the binding cord are pressure-contacted to each other to be fixed by heat bonding or an adhesive. Continuous manufacturing method. 2. A transfer device for transferring a cloth bag whose one end in the lengthwise direction is open, and a flexible plastic made along the widthwise direction at both surface opening end edges of the cloth bag transferred by the transfer device. While supplying each reinforcing tape,
A reinforcing tape attaching device for pressing both of these reinforcing tapes to the cloth bag by pressure bonding and fixing them to the cloth bag by heat bonding or an adhesive, and both ends on the one reinforcing tape are outside the widthwise both ends of the cloth bag. A flexible plastic lacing is provided so as to project, and a lacing attachment device is provided when the lacing is pressed against the one reinforcing tape and fixed by heat bonding or an adhesive. Continuous production device for cloth bags with strings.