KR102363454B1 - Manufacturing device with eco-friendly plastic bag - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing an eco-friendly plastic bag. The apparatus for manufacturing an eco-friendly plastic bag, according to the present invention, comprises: a housing with a hollow formed therein and forming the external appearance; a first guide provided inside the housing and allowing a gap to be formed with an inner rim of the housing so as to form a first flow path; a second guide provided inside the first guide, allowing a gap to be formed with an inner rim of the first guide so as to form a second flow path, and closing one side of the housing; a shielding part provided inside the housing, coupled to the first guide, and shielding a part of the first flow path; and a center shaft provided inside the housing, coupled to the second guide, and forming a discharge flow path through which raw materials supplied from the first flow path and the second flow path are discharged. According to the present invention, a specific portion is formed of eco-friendly materials discharged from the first flow path.

Description

Manufacturing device with eco-friendly plastic bag

The present invention relates to an apparatus for manufacturing an eco-friendly plastic bag, and more particularly, a part of the first flow path is shielded by the shielding unit in the process where the first flow path and the second flow path are joined to the discharge flow path, so that only a specific part is removed from the first flow path. It relates to an eco-friendly plastic bag manufacturing apparatus for manufacturing an eco-friendly plastic bag made of discharged eco-friendly raw material.

In general, an envelope is to temporarily store various objects so that a user can easily transport the objects.

These bags are made of paper or vinyl and are widely used.

Here, in the case of a plastic bag, it is easily discarded as it is widely used. At this time, it takes a long time to decompose the plastic bag, thereby adversely affecting the environment.

In this regard, in Korean Patent Registration No. 10-0465980, a biodegradable resin composition that allows the plastic bag to function as a plastic bag while being more easily decomposed has been developed and disclosed.

However, in the case of the biodegradable resin composition according to the prior art, although it can be applied to the manufacture of a basic bag having a circular inside, there is a problem in that it cannot be applied to the manufacturing of a shopping bag having a rectangular inside.

That is, there was a problem in that the joint portion was not completely sealed when the shopping bag made of biodegradable raw materials was manufactured.

Korean Registered Patent No. 10-0465980

Accordingly, an object of the present invention has been devised to solve the problems of the prior art as described above, by blocking a portion of the first flow path by the shielding unit in the process where the first flow path and the second flow path merge into the discharge flow path. An object of the present invention is to provide an eco-friendly plastic bag manufacturing apparatus for manufacturing an eco-friendly plastic bag made of an eco-friendly raw material discharged from a first flow path only at a specific portion.

According to a feature of the present invention for achieving the object as described above, the housing is formed hollow inside and has an external shape, and the first flow path is provided in the housing and a gap is formed with the inner ring of the housing. A first guide forming a, a second guide provided inside the first guide and forming a second flow path and closing one surface of the housing by allowing a gap to be formed with the inner ring of the first guide; A shield provided inside the housing and coupled with the first guide to shield a portion of the first flow path, and a shield provided inside the housing and coupled with the second guide, so that the raw material supplied from the first flow path and the second flow path is It is characterized in that it is configured to include a center shaft forming a discharge flow path to be discharged.

A fixing part for fixing the shielding part by being coupled to the housing is provided on one side of the housing, and an adjustment part for adjusting the thickness or thickness deviation of the raw material discharged from the discharge passage is provided on one side of the fixing part, and the housing and the housing on one side of the adjustment part It is characterized in that a cover for fixing the adjustment unit is provided while being coupled.

A first supply hole through which a raw material can be supplied through a first flow path is formed on one side of the housing, and a second supply hole through which a raw material can be supplied through a second flow path is formed on one side of the second guide. do it with

The raw material supplied to the first flow passage is a resin including biodegradable raw materials or regenerated raw materials, and the raw material supplied to the second flow passage is a resin.

At least one expansion groove is formed in the outer ring of the first guide or the second guide so that the raw material supplied through the first flow path or the second flow path can be supplied and discharged at a uniform height through the discharge flow path. do.

The environment-friendly plastic bag manufacturing apparatus according to the present invention has the following effects.

In the present invention, since the shielding part is provided, there is an advantage that the raw material supplied from the first flow passage can be located only in a specific portion in the process where the raw material supplied from the first flow passage and the raw material supplied from the second flow passage are merged into the discharge flow passage.

In the present invention, there is an advantage that plastic bags having different colors can be manufactured by forming the first flow path and the second flow path separately, and the first flow path and the second flow path joining as a discharge flow path.

In the present invention, since the fixing part is provided, there is an advantage that the shielding part and the first guide can be completely in close contact.

In the present invention, there is an advantage in that the thickness of the raw material discharged through the discharge passage can be adjusted by providing the adjusting unit.

1 is a perspective view showing the configuration of a preferred embodiment of an apparatus for manufacturing an eco-friendly plastic bag according to the present invention;
2 is a cross-sectional view showing the configuration of a preferred embodiment of an apparatus for manufacturing an eco-friendly plastic bag according to the present invention;
3 is an exploded view showing the configuration of a preferred embodiment of an apparatus for manufacturing an eco-friendly plastic bag according to the present invention;
4 is a bottom perspective view showing the configuration of a shielding part constituting a preferred embodiment of the environmentally friendly plastic bag manufacturing apparatus according to the present invention;
5 is an upper perspective view showing the configuration of a shielding part constituting a preferred embodiment of the apparatus for manufacturing an eco-friendly plastic bag according to the present invention;
6 is a bottom perspective view showing the configuration of a fixing part constituting a preferred embodiment of an apparatus for manufacturing an eco-friendly plastic bag according to the present invention;
7 is a perspective view showing the configuration of a second guide constituting a preferred embodiment of the eco-friendly plastic bag manufacturing apparatus according to the present invention;
8 is a perspective view showing the configuration of a center shaft constituting a preferred embodiment of an apparatus for manufacturing an eco-friendly plastic bag according to the present invention;
9 is a perspective view showing the configuration of a coupling pin constituting a preferred embodiment of the eco-friendly plastic bag manufacturing apparatus according to the present invention;
10 is a cross-sectional view showing an example of a plastic bag manufactured according to a preferred embodiment of the eco-friendly plastic bag manufacturing apparatus according to the present invention;

Hereinafter, a preferred embodiment of an apparatus for manufacturing an eco-friendly plastic bag according to the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 10, an embodiment of an apparatus for manufacturing an eco-friendly plastic bag according to the present invention is shown. That is, FIG. 1 is a perspective view showing the configuration of a preferred embodiment of the device for manufacturing an eco-friendly plastic bag according to the present invention, and FIG. 2 is a cross-sectional view showing the configuration of a preferred embodiment of the device for manufacturing an eco-friendly plastic bag according to the present invention. 3 is an exploded view showing the configuration of a preferred embodiment of the device for manufacturing an eco-friendly plastic bag according to the present invention, and FIG. 4 shows the configuration of the shielding unit constituting a preferred embodiment of the device for manufacturing an eco-friendly plastic bag according to the present invention The bottom perspective view is shown, and FIG. 5 is an upper perspective view showing the configuration of the shielding part constituting a preferred embodiment of the eco-friendly plastic bag manufacturing apparatus according to the present invention, and FIG. 6 is an eco-friendly plastic bag manufacturing according to the present invention The bottom perspective view showing the configuration of the fixing part constituting the preferred embodiment of the device is shown, and FIG. 7 is a perspective view showing the configuration of the second guide constituting the preferred embodiment of the eco-friendly plastic bag manufacturing apparatus according to the present invention. 8 is a perspective view showing the configuration of a center shaft constituting a preferred embodiment of the eco-friendly plastic bag manufacturing apparatus according to the present invention, and FIG. 9 is a preferred embodiment of the eco-friendly plastic bag manufacturing apparatus according to the present invention A perspective view showing the configuration of the coupling pins constituting the is shown, and FIG. 10 is a cross-sectional view showing an example of a plastic bag manufactured according to a preferred embodiment of the apparatus for manufacturing an eco-friendly plastic bag according to the present invention.

As shown in these drawings, the apparatus for manufacturing an eco-friendly plastic bag according to the present invention includes a housing 200 having a hollow inside and forming an outer shape, and an inner ring of the housing 200 provided inside the housing 200 . The first guide 300 forming the first flow path 10 by allowing a gap to be formed, and the first guide 300 provided inside the first guide 300 and having a gap with the inner ring of the first guide 300 The second guide 400 is provided in the housing 200 to form the second flow path 20 and closes one surface of the housing 200, and the first guide 300 and The shielding part 130 for shielding a part of the first flow path 10 by being coupled, and the first flow path 10 and the second flow path ( 20) is configured to include a center shaft 140 that forms a discharge passage 30 through which the raw material is discharged.

As shown in FIG. 2 , the housing 200 has a cylindrical shape with a hollow inside, and forms a part of the outer shape.

The housing 200 is formed to be penetrated so that other components can be inserted or installed in the housing 200 from the lower surface or the upper surface.

In addition, the interior of the housing 200 is preferably formed to be hollow in a cylindrical shape.

In addition, the hollow inside of the housing 200 is formed such that the outer diameter of the hollow inside gradually narrows from the top to the top.

In addition, a first supply hole 210 through which a raw material can be supplied to the first flow path 10 is formed at one side of the housing 200 .

In other words, the first supply hole 210 is formed in the outer ring of the housing 200 by being connected to the first flow path 10 so that the raw material can be supplied to the first flow path 10 .

As such, the raw material supplied to the first flow path 10 through the first supply hole 210 is preferably made of a resin containing a biodegradable raw material or a regenerated raw material.

That is, the raw material supplied to the first flow path 10 through the first supply hole 210 is a resin such as polyester containing 20 to 50% by weight of a biodegradable raw material or 20 to 50% by weight of a regenerated raw material. do for example

Here, the biodegradable raw material means a raw material that can be decomposed by the enzyme system of bacteria or other organisms, such as calcium carbonate, and the recycled raw material means a recyclable raw material obtained from waste plastic products.

As such, the first guide 300 is provided inside the housing 200 .

The first guide 300 allows the first flow path 10 to be formed inside the housing 200 , and has a shape corresponding to the hollow interior of the housing 200 .

In addition, the lower surface or upper surface of the first guide 300 is formed to penetrate from the lower surface or upper surface so that other components can be inserted or installed in the interior of the first guide 300 .

That is, as shown in FIG. 2 , the first guide 300 is formed in a shape similar to a cone while the lower part is formed in a cylindrical shape.

The first guide 300 is formed to be hollow inside like the housing 200 , so that the second guide 400 can be installed therein so that the second flow path 20 can be formed. am.

As such, on the outer ring of the first guide 300 or the second guide 400 , the raw material supplied through the first flow path 10 or the second flow path 20 is uniformly high through the discharge flow path 30 . At least one expansion groove 40 is formed so that it can be supplied and discharged into the furnace.

That is, the expansion groove 40 is formed in the outer ring of the first guide 300 .

The expansion groove 40 is recessed inward along the circumference of the outer ring of the first guide 300 or the second guide 400, and a first supply hole 210 or a second supply hole 410 to be described later. ), as the raw material supplied to the first flow path 10 or the second flow path 20 is supplied in either direction, it is impossible to uniformly fill the inside of the first flow path 10 or the second flow path 20, By preventing this, the raw material can be discharged at a uniform height through the discharge passage 30 .

That is, the expansion groove 40 is a portion that provides a space through which the raw material passing through the first flow passage 10 or the second flow passage 20 can be accumulated.

As such, the raw material passing through the first flow path 10 or the second flow path 20 through the expansion groove 40 may be supplied to the discharge flow path 30 at a uniform height.

As such, as the first guide 300 is positioned inside the housing 200 , a gap of a predetermined interval is generated between the housing 200 and the first guide 300 , and this gap is in the first flow path 10 . it corresponds to

In addition, the second guide 400 is provided inside the first guide 300 .

The second guide 400 allows the second flow path 20 to be formed inside the first guide 300 , and has a shape corresponding to the hollow inside of the second guide 400 .

In addition, a first coupling groove 440 to which a center shaft 140 to be described later is coupled is formed on the upper surface of the second guide 400 , and the center shaft 140 is first coupled to the first coupling groove 440 . A second coupling groove 450 into which the coupling pin 150 to be fixedly installed in the recess 440 is inserted is further formed.

That is, the first coupling groove 440 is recessed in the lower direction on the upper surface of the second guide 400 , and the second coupling groove 450 is recessed in the upper surface of the first coupling groove 440 in the lower direction. will become

In addition, the lower surface of the second guide 400 has a shape corresponding to the lower surface of the housing 200 so as to close the lower surface of the housing 200 .

That is, it is preferable that the lower surface of the second guide 400 is formed in an expanded form to close the lower surface of the housing 200 .

At the same time, a first air hole 420 and a second air hole 430 are formed on the lower (extended portion) side of the second guide 400 .

The first air hole 420 is configured to extend from the lower side surface of the second guide 400 to the first coupling groove 440 .

The second air hole 430 is configured to extend from the lower side surface of the second guide 400 to the second coupling groove 450 .

The plastic bag is easily formed through the first air hole 420 and the second air hole 430 .

As such, the first air hole 420 and the second air hole 430 are widely known techniques, and thus a detailed description thereof will be omitted.

In addition, the expansion groove 40 is formed in the outer ring of the second guide 400 , like the first guide 300 .

As described above, since the second guide 400 is positioned inside the first guide 300 , a gap of a predetermined interval is generated between the first guide 300 and the second guide 400 , and the gap is formed in the second flow path. It corresponds to (20).

In addition, a second supply hole 410 through which a raw material can be supplied to the second flow passage 20 is formed at one side of the second guide 400 .

In other words, the second supply hole 410 is formed on the bottom surface of the second guide 400 to be connected to the second flow path 20 so that the raw material can be supplied to the second flow path 20 .

As such, the raw material supplied to the second flow path 20 through the second supply hole 410 is preferably made of resin.

That is, it is assumed that the raw material supplied to the second flow path 20 through the second supply hole 410 is a resin such as polyester.

The raw material supplied to the first flow passage is a resin containing biodegradable raw materials or regenerated raw materials, and the raw material supplied to the second flow passage is a resin.

Meanwhile, the shield 130 is provided inside the housing 200 .

The shielding unit 130 is positioned above the first guide 300 , and by shielding a part of the first flow path 10 , the raw material supplied through the first flow path 10 is discharged through the discharge flow path ( 30) and to limit a portion of the first flow path 10 in the process of merging.

To this end, as shown in FIGS. 4 to 5 , the shielding part 130 has a hollow cylindrical shape with a bottom surface inclined upward so as to be in close contact with the upper part of the first guide 300 . desirable.

That is, it is preferable that the lower surface of the shielding part 130 is formed to correspond to the upper part of the first guide 300 .

Here, the inlet groove 131 is formed on the bottom surface of the shielding part 130 .

The inlet groove 131 has a cylindrical shape with a hollow inside through the first flow path 10 so that only a part of the raw material supplied to the discharge flow passage 30 can be joined with the discharge flow passage 30 .

In addition, the inlet groove 131 may be formed in plurality.

The inlet groove 131 is formed to be recessed upward from the bottom surface of the shielding part 130, and among the bottom surfaces of the inlet groove 131, only a portion is preferably formed in the upper part (in FIG. 4) and the lower part (in FIG. 4). Do.

At this time, the raw material supplied to the discharge passage 30 through the inlet groove 131 forms the outer surface of the central portion of the shopping bag shown in FIG. 10 . Of course, the rest of the shopping bag except for the outer surface of the central part is made of the raw material supplied to the discharge passage 30 through the second passage 20 .

In other words, the raw material supplied to the discharge passage 30 through the inlet groove 131 corresponds to a portion that does not overlap in four layers during the manufacturing process of the shopping bag.

In this case, the raw material supplied to the discharge passage 30 through the first passage 10 and the inlet groove 131 corresponds to a resin containing a biodegradable raw material or a regenerated raw material, and the complete sealing of the expansion part is impossible when thermally bonding. Because it may not happen.

That is, in a plastic bag in the form of a shopping bag, an M-shaped extension is provided to widen the width of the plastic bag. In the process of bonding the extension, the resin containing the biodegradable raw material or the regenerated raw material burns or is completely adhered. This is because the plastic bag is not completely sealed.

Here, the extended part refers to a portion overlapped in four layers.

In addition, a groove is formed in the upper portion of the shielding portion 130 along the outer ring to the inside from the depression to form a seating end (132).

The upper portion of the shielding unit 130 is formed to be stepped by the seating end 132 .

Such a seating end 132 is to allow a fixing part 120 to be described later to be seated.

As such, the fixing part 120 is seated on the seating end 132 , and the fixing part 120 is again coupled to the upper end of the housing 200 so that the shielding part 130 is in close contact with the first guide 300 without flow. can be fixed.

Meanwhile, a center shaft 140 is provided inside the housing 200 .

The center shaft 140 is coupled to the first coupling groove 440 formed in the second guide 400 , and is in contact with the first flow path 10 and the second flow path 20 to form the discharge flow path 30 . area to be formed.

That is, a gap between the outer ring of the center shaft 140 and the inner ring of the shielding unit 130 corresponds to the discharge passage 30 .

The center shaft 140 has a cylindrical shape with a hollow inside, and a third air hole 141 connected to the first air hole 420 is formed along the circumference in the longitudinal direction.

The third air hole 141 is connected to the first air hole 420 to supply compressed air to the outside of the housing 200 to extend.

The third air hole 141 may be formed in plurality.

As such, a coupling pin 150 for coupling the center shaft 140 to the first coupling groove 440 is further provided.

The coupling pin 150 is configured to have a shape similar to that of a circular column formed vertically long, and the upper portion is formed to extend outwardly, thereby coupling the center shaft 140 to the first coupling groove 440 .

A fourth air hole 151 connected to the second air hole 430 is formed in the coupling pin 150 in the longitudinal direction.

The fourth air hole 151 is connected to the second air hole 430 to supply compressed air to the outside of the housing 200 to extend.

In addition, a guide 160 is further provided inside the center shaft 140 .

The guide unit 160 is positioned on the inner ring portion of the center shaft 140 , and serves to guide or guide the raw material discharged from the discharge passage 30 to the outside of the housing 200 .

The guide portion 160 is formed in the shape of a cylindrical column elongated vertically and hollow inside.

As such, the hollow inside of the guide unit 160 is formed so that the compressed air supplied from the fourth air hole 151 is discharged so that the raw material discharged from the discharge passage 30 can be expanded.

On the other hand, a fixing part 120 for fixing the shielding part 130 by being coupled to the housing 200 is provided on one side of the housing 200 , and one side of the fixing part 120 is discharged from the discharge passage 30 . An adjusting unit 110 for adjusting the thickness or thickness deviation of the raw material to be used is provided, and a cover 100 for fixing the adjusting unit 110 while being coupled to the housing 200 is provided on one side of the adjusting unit 110 .

The fixing part 120 is provided on the upper surface of the housing 200 , and is for fixing the shielding part 130 to the inside of the housing 200 .

The shielding part 130 through the fixing part 120 has the lower surface in contact with the upper part of the first guide 300 between the housings 200, and the upper surface is in contact with the lower part of the fixing part 120, so that the housing ( 200) is blocked from flowing inside.

To this end, the fixing part 120 is formed to correspond to the upper part of the shielding part 130 so that the shielding part 130 can be coupled without flow.

That is, as shown in FIG. 6 , the fixing part 120 is formed in a ring shape and a seating groove 121 corresponding to the seating end 132 is formed at the lower end of the inner ring of the fixing part 120 .

As described above, contact with the shielding part 130 is achieved through the seating groove 121 .

Here, it is assumed that the fixing part 120 is bolted to the upper surface of the housing 200 .

In addition, the adjusting unit 110 is provided on the upper portion of the fixing unit 120 .

The adjustment unit 110, as shown in FIG. 2, is made of a hollow ring (Ring) shape.

The inner ring of the adjusting unit 110 is adjacent to the outer ring of the center shaft 140 to form a gap between the outer ring of the center shaft 140 and the inner ring of the adjusting unit 110 , and by this gap, the discharge passage 30 is separated from the inner ring. The thickness of the discharged raw material becomes thinner and can be adjusted.

As such, the adjusting unit 110 may be provided with an adjusting unit 110 having various inner diameter values in order to variously control the thickness of the raw material discharged from the discharge passage 30 .

That is, the adjusting unit 110 may be provided with different adjusting units 110 having various inner diameter values, and it is preferable that the adjusting unit 110 is provided interchangeably.

In addition, the adjusting unit 110 may adjust the thickness deviation of the raw material discharged from the discharge passage 30 .

Here, the thickness deviation means that the thickness of the entire raw material discharged from the discharge passage 30 can be uniform.

And, the cover 100 is provided on the upper portion of the adjustment unit (110).

The cover 100 is coupled to the upper surface of the housing 200 , and is a portion forming an outer shape together with the housing 200 while fixing the adjusting unit 110 to the upper surface of the housing 200 .

This, the cover 100 is made in a shape similar to the adjustment unit 110 .

That is, the cover 100 is preferably formed to accommodate the adjustment unit 110 therein by being made of a hollow ring (Ring) shape inside.

As described above, since the cover 100 is coupled to the upper surface of the housing 200, the appearance of the apparatus for manufacturing an eco-friendly plastic bag according to the present invention can be made in a shape similar to a single circular column.

The eco-friendly plastic bag in the form of a shopping bag manufactured by the apparatus for manufacturing an eco-friendly plastic bag according to the present invention configured as described above is, as shown in FIG. 10, only through the first flow path 10 outside the center of the eco-friendly plastic bag in the form of a shopping bag It can be made of the supplied raw material (A). Of course, a portion other than the raw material A supplied through the first flow passage 10 is made of the raw material B supplied through the second flow passage 20 .

Once again, as shown in FIG. 10 , the inside of the center of the eco-friendly plastic bag in the form of a shopping bag is made of the raw material B supplied through the second flow path 20 .

That is, in the eco-friendly plastic bag manufacturing apparatus according to the present invention, since the shielding part is provided, the raw material supplied from the first flow path is limited to a specific part in the process in which the raw material supplied from the first flow path and the raw material supplied from the second flow path merge into the discharge flow path. it could be positioned.

In addition, in the eco-friendly plastic bag manufacturing apparatus according to the present invention, the first flow path and the second flow path are separately formed, and the first flow path and the second flow path are joined to the discharge flow path, so that plastic bags having different colors can be manufactured. it has become

In addition, in the apparatus for manufacturing an eco-friendly plastic bag according to the present invention, since the fixing part is provided, complete adhesion between the shielding part and the first guide can be achieved.

And, in the eco-friendly plastic bag manufacturing apparatus according to the present invention, it is possible to adjust the thickness of the raw material discharged through the discharge flow path by providing the adjusting unit.

The scope of the present invention is not limited to the embodiments illustrated above, and many other modifications based on the present invention will be possible for those skilled in the art within the technical scope as described above.

10. 1st Euro 20. 2nd Euro
30. Discharge Euro 40. Expansion Groove
100. Cover 110. Adjustment
120. Fixing part 121. Seating groove
130. Shielding part 131. Inlet groove
132. Seating end 140. Center shaft
141. Third air hole 150. Coupling pin
151. 4th air hole 160. Guide part
200. Housing 210. First supply hole
300. First guide 400. Second guide
410. Second supply hole 420. First air hole
430. Second air hole 440. First coupling groove
450. Second coupling groove

Claims (5)

The interior is formed hollow, the housing forming an external shape;
a first guide provided inside the housing and forming a first flow path by allowing a gap to be formed with the inner ring of the housing;
a second guide provided inside the first guide and configured to form a second flow path and close one surface of the housing by allowing a gap to be formed with the inner ring of the first guide;
a shield provided in the housing and coupled to the first guide to shield a portion of the first flow path;
A center shaft provided in the housing and coupled to the second guide to form a discharge flow path through which raw materials supplied from the first flow path and the second flow path are discharged;
A fixing part for fixing the shielding part by being coupled to the housing is provided at one side of the housing;
An adjustment unit for adjusting the thickness or thickness deviation of the raw material discharged from the discharge passage is provided on one side of the fixing unit,
Eco-friendly plastic bag manufacturing apparatus, characterized in that provided; a cover for fixing the adjustment unit while coupled to the housing at one side of the adjustment unit. delete The method of claim 1,
A first supply hole through which a raw material can be supplied through a first flow path is formed on one side of the housing, and a second supply hole through which a raw material can be supplied through a second flow path is formed on one side of the second guide. Eco-friendly plastic bag manufacturing device, characterized in that. 4. The method of claim 3,
The raw material supplied to the first flow path is a resin including biodegradable raw materials or recycled raw materials, and the raw material supplied to the second flow path is a resin. The method of claim 1,
At least one expansion groove is formed in the outer ring of the first guide or the second guide so that the raw material supplied through the first flow passage or the second flow passage can be supplied and discharged at a uniform height through the discharge passage. Eco-friendly plastic bag manufacturing device.

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