KR100604950B1 - Method for manufacturing non-woven fabric bag - Google Patents

Abstract

Since the nonwoven fabric of the present invention has a fibrous structure, the finished product is used in children's pranks, which are highly problematic in the world because of high air ventilation, so that it does not cause cases of suffocation, and thus is a method for producing a non-woven fabric that is not dangerous. After the non-woven fabric 10 is folded, the step of continuously moving the feed rollers 12a and 12b and the crimping unit 20 in which the instantaneous heating heater wire 22 is fixed to the insulating plate 21 in the longitudinal direction. And stopping the nonwoven fabric 10 folded on the buffer roller 30 formed at a predetermined interval on the lower side of the crimping portion 20, and the nonwoven fabric 10 folded on the buffer roller 30 is placed thereon. After the fork is moved, the end of the nonwoven fabric is bitten by the feed rollers 36a and 36b, and the buffer roller 30 is raised to the side of the crimping portion 20 formed on the upper side. Instantly from 400 ° C to 800 ° C as the heating heater wire 22 descends Pressing and simultaneously cutting the nonwoven fabric 10 by lowering the buffer roller 30 to the horizontal line on which the nonwoven fabric 10 is supplied, and by the instantaneous heating heater wire 22 of the crimping unit 20. It is characterized in that the step of natural cooling so that the fusion site of the cut nonwoven fabric 10 is completely attached.

Nonwovens, buffer rollers.

Description

Manufacturing method of nonwoven bag {METHOD FOR MANUFACTURING NON-WOVEN FABRIC BAG}

1 (a) to (g) are diagrams showing the process steps of the method for producing a nonwoven fabric bag of the present invention.

                 Description of the main parts of the drawing

          10: nonwoven fabric 12a, 12b: feeding roller

          20: crimping portion 21: insulating plate

          22: instantaneous heating heater wire 30: buffer roller

The present invention relates to a method for manufacturing a nonwoven fabric bag, and more particularly, since the nonwoven fabric has a fibrous structure, the finished product has a high air permeability and is used as a joke of children, which is becoming a problem worldwide. Not only does not generate, but also relates to a method for producing a nonwoven bag that can be made while automatically bonding the bag without the need for adhesive during manufacture.

Recently, paper bags, plastic bags, and non-woven bags have been used as bags to store purchased items. Among them, paper bags are easily torn and expensive. I use a lot.

However, when the edges are attached to each other to make an envelope by ultrasonic heaters, when the vinyl is melted together, harmful substances are discharged and environmental pollution is generated. In particular, plastic bags have a problem of being thin and easily torn. .

In addition, plastic bags can generate environmental pollution during incineration, which is regulated in terms of environmental pollution.

In addition, recently used nonwoven fabric bags have been frequently used in recent years because of their poor tearing properties and good air permeability.

Envelopes made of nonwoven fabrics are stitched together using a thread or the like during the manufacture of the bag or attached by ultrasonic heating.

When manufacturing a bag by stitching a nonwoven fabric into a thread and so on, the manufacturing cost is increased due to labor costs. Recently, ultrasonic heaters have been used as a method of heating and attaching.

The heating attachment method using the ultrasonic heater maintains its shape because the attachment surface of the nonwoven fabric is easily melted due to the heating that is continued when the heater is brought into contact with the attachment surface of the nonwoven fabric because of the continuous heating. Is difficult.

In addition, the ultrasonic heater has a problem that the production cost increases because it is required to go through several stages of work process and mass production of many defective products.

Therefore, the present invention has been created in view of the above-described conventional problems, and for this purpose, since the nonwoven fabric has a fibrous structure, the finished product has high air permeability, so that the children who are being troubled around the world use it as a mischief. Not only does not cause the case of suffocation, but also provides a method of manufacturing a non-woven bag that can be automatically glued because no adhesive is required at the time of manufacture.

In order to achieve the object of the present invention as described above, the manufacturing method of the nonwoven fabric bag, the step of moving through the feed roller that is continuously supplied after the non-woven fabric folded, and the instantaneous heating heater wire in the longitudinal direction is fixed to the insulating plate Stopping the non-woven fabric folded on the cushioning roller formed at a predetermined distance on the lower side of the pressing portion and the pressing portion, and after the non-woven fabric folded on the buffer roller is placed on the buffer roller, the end of the nonwoven fabric is bitten by a feed roller. When the buffer roller is raised to the crimping part formed on the upper side, the instantaneous heating heater line of the crimping part is lowered, and instantaneous heat compression is performed at 400 ° C to 800 ° C, and the buffer roller is lowered to the horizontal line where the nonwoven fabric is supplied. Cutting and fusion, and the fusion site of the nonwoven fabric cut by the instantaneous heating heater wire of the crimping portion is completely attached. It consists of a cooling step that is open.

With reference to the accompanying drawings, a method for manufacturing a nonwoven bag of the present invention configured as described above will be described in detail as follows.

Fig.1 (a)-(g) is a figure which shows the process step of the manufacturing method of the nonwoven fabric bag of this invention.

In the present invention, to attach the nonwoven fabric 10 continuously supplied as shown in FIG.

Since the semi-folded nonwoven fabric 10 is lifted up as described above, the rolled non-woven fabric 10 is moved through the pressing movement rollers 12a and 12b of FIG. Squeeze and move.

The nonwoven fabric 10 that is moved through the moving rollers 12a and 12b of FIG. 1 (c) is moved by the rotation of the moving rollers 12a and 12b and positioned in FIG. 1 (d). It is moved to rest on the upper side of 30 and then stopped.

When the nonwoven fabric 10 is moved and stopped on the buffer roller 30, the compression unit 20 located on the buffer roller 30 is lowered as shown in FIG. 1 (e) and at the same time the buffer roller 30 on the lower side. ) Is also slightly elevated. That is, when the instantaneous heating heater wire 22 of the compression unit 20 is lowered, the buffer roller 30 is slightly raised when pressing the overlapping nonwoven fabric 10, so that the upper and lower surfaces of the nonwoven fabric 10 overlapped when pressed. The shift can be prevented.

The end of the nonwoven fabric 10 moved by the moving rollers 12a and 12b is stopped while being bitten by the transfer rollers 36a and 36b after passing through the buffer roller 30, and then the bonding and cutting operations are performed. After the end, the feed rollers 36a and 36b are rotated to feed the nonwoven fabric 10.

When the nonwoven fabric 10 is pressed while being lowered to the buffer roller 30 by the compression unit 20 in this way, when the voltage is momentarily applied to the instantaneous heating heater line 22 so as to be in a state as shown in FIG. Instantaneous fusion heat is generated.

At this time, since the insulating plate 21 is formed between the instantaneous heating heater wire 22 and the compression part 20, heat generated to the compression part 20 side is not transferred, and only the instantaneous heating wire 22 is weak. Heat is instantaneously generated to about 400 to 800 ° C. for 0.2 to 0.4 seconds.

The nonwoven fabric 10 is pressed to the buffer roller 30 by the instantaneous heating heater line 22 mounted on the lower end side of the compression unit 20 while the surface of the part is cut while being sealed as shown in FIG. 1 (f). do.

When the temperature is applied to the instantaneous heating heater wire 22 within a predetermined time within the temperature range of the present invention as described above is smoothly cut and sealed, while the temperature is low, the nonwoven fabric 10 is continuously drawn in. Is not broken properly, and if the temperature range is formed higher than the picked-up temperature, a large area of the nonwoven fabric 10 that contacts the instantaneous heating heater line 22 may melt, so that a predetermined range It is good to carry out within.

In particular, the nonwoven fabric 10 that is pressed by the instantaneous heating heater wire 22 of the present invention is heat-cut and sealed while the upper end portion of the buffer roller 30 is pressed and the both sides of the nonwoven fabric 10 are fused. There is a characteristic.

Since the voltage applied to the instantaneous heating heater wire 22 of the compression unit 20 is pressed and then instantaneously supplied / blocked after 0.3 seconds supply, the nonwoven fabric 10 melts.

This is because the temperature of the instantaneous heating heater wire 22 rises to 800 ° C and then rises to 300 ° C. Then, the fused upper and lower surfaces of the nonwoven fabric 10 are instantaneously heated, and the high heat is not generated continuously. It hardens as it cools for seconds, so it does not fall easily. That is, instantaneous high heat is generated by the instantaneous heating heater wire 22, but if the voltage is applied and then immediately blocked, the instantaneously generated temperature drops quickly, and thus the fused edge portion of the nonwoven fabric is immediately hardened without being fused.

Therefore, since the nonwoven fabric 10 is pressed by the buffer roller 30 by the instantaneous heating heater wire 22 of the compression unit 20, the pressed surface of the nonwoven fabric 10 is melted down instantaneously, and the nonwoven fabric 10 is cut up and down. Since the edges of the surfaces are fused with each other, the surfaces are straight and sealed.

On the contrary, when continuously applying voltage to the instantaneous heating heater wire 22 without generating instantaneous voltage and continuously generating heat, the contact surface of the nonwoven fabric 10 which is brought into contact with each other due to the continuous heat melts more in a straight line. Due to the problem of melting in a non-fused state, it is preferable that the instantaneous heating heater line 22 is instantaneously heated and cooled, so that it does not stick well and the attachment part is not formed in a straight line.

The nonwoven bag cut and fused by the instantaneous heating heater line 22 is moved through the conveying rollers 36a and 36b as shown in FIG. 1 (g) and processed along the roller 33.

In particular, the buffer roller 30 of the present invention is not only buffered when the compression unit 20 is pressed on the upper side, but also formed of silicon that is not only resistant to heat but also has good buffering properties. When the instantaneous heating heater wire 22 is pressed on the buffer roller 30, the instantaneous heating heater wire 22 is pressed while being cut while melting only the nonwoven fabric.

Therefore, if the nonwoven fabric is automatically cut by the manufacturing method of the nonwoven bag as described above, it can be sealed, thereby simplifying the process and producing mass production.

In addition, since the nonwoven fabric has a fibrous structure, the finished product is not torn even when a heavy product is put into it, and there is a feature that is not dangerous even if children around the world have high air ventilation and use it as a prank.

Since the nonwoven bag of the present invention is tough and has no grain direction, it can be manufactured without synthesis with other fabrics, so that it can be used purely recycled and recycled, and it does not require printing of warning phrases, thereby having an environmentally friendly effect.

Claims (3)

In the manufacturing method of the nonwoven bag, Moving the nonwoven fabric 10 through the feeding rollers 12a and 12b which continuously supply the nonwoven fabric 10 after being folded, The non-woven fabric 10 folded by the instantaneous heating heater wire 22 fixed to the insulating plate 21 in the longitudinal direction and the buffer roller 30 formed at a predetermined interval on the lower side of the crimping portion 20. )), After the semi-folded nonwoven fabric 10 is moved onto the buffer roller 30, the end of the nonwoven fabric is bitten by the feed rollers 36a and 36b to fix the buffer roller 30 to the upper side. Raising to the (20) side, While the instantaneous heating heater wire 22 of the crimping unit 20 is lowered, the instantaneous heating and compression of 400 ° C to 800 ° C is simultaneously performed, and the buffer roller 30 is lowered to the horizontal line on which the nonwoven fabric 10 is supplied. Cutting and fusion step; Method of producing a nonwoven fabric bag characterized in that the step of natural cooling so that the fusion site of the nonwoven fabric (10) cut by the instantaneous heating heater wire (22) of the crimping portion 20 is completely attached. The method according to claim 1, wherein the buffer roller (20) is silicon. The method for producing a nonwoven fabric bag according to claim 1, wherein the instantaneous heating time of the instantaneous heating heater wire (22) is 0.2 to 0.4 seconds.

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