WO2016010297A1

WO2016010297A1 - Environment-friendly and biodegradable non-woven fabric, and apparatus and method for producing same

Info

Publication number: WO2016010297A1
Application number: PCT/KR2015/007071
Authority: WO
Inventors: 구기승
Original assignee: 구기승
Priority date: 2014-07-14
Filing date: 2015-07-08
Publication date: 2016-01-21
Also published as: KR101520226B1

Abstract

Provided are environment-friendly and biodegradable non-woven fabric, and an apparatus and a method for producing same, the method for producing the non-woven fabric according to an embodiment of the present invention comprising: step S10 for inserting biodegradable PLA into an extruder and melting, spinning by means of a spinning nozzle having hundreds of small orifices, and fiberizing by elongating and cooling by means of heated high-pressure air sprayed from both sides of the spinning nozzle at high speeds; step S20 for accumulating into a web fiberized PLA on a mesh belt; step S30 for stacking pulp on top of the webbed accumulated PLA; step S40 for accumulating the PLA fiberized in step S10 into a web and stacking same on top of the pulp; and step S50 for combining the stacked PLA, pulp and PLA by thermal bonding. According to one embodiment of the present invention, by stacking the biodegradable pulp layer and PLA layer for production, the smoothness, absorbency and volumetric characteristics of the pulp layer are preserved, and as the PLA layer holds and protects the pulp layer to increase the necessary mechanical strength when in actual use, the product quality is improved. Additionally, the production cost can be reduced by using pulp, environmental problems are not incurred as post-disposal biodegradation is 100%, no carcinogenic or hygienically harmful substances are discharged, and due to superb air-permeability and a feeling of freshness, hygiene and safety are enhanced. Because the PLA layer holds onto the surface of the pulp layer, the present invention can be laundered, and thus allows repeated use.

Description

Eco-friendly biodegradable nonwoven fabric and its manufacturing apparatus and manufacturing method

An embodiment of the present invention relates to an eco-friendly biodegradable nonwoven fabric, and a manufacturing apparatus and a manufacturing method thereof, more specifically, an eco-friendly biodegradable nonwoven fabric that improves the quality of the product by improving the mechanical properties by absorbing, softness and bulky It relates to an apparatus and a manufacturing method.

In general, nonwoven refers to nonwoven fabric. That is, it refers to a fiber aggregate that is not spun, woven, or braided, and refers to a sheet formed by bonding by physical and chemical means.

Conventional nonwoven fabrics were prepared by composite injection of high absorbency pulp and high polyethylene (PE) or polypropylene (PP) when used as a hygiene product.

However, polyethylene (PE) or polypropylene (PP) is a problem that can cause skin diseases such as itching and erythema in the soft skin because harmful components are not sprayed and absorbed, and the problem of causing environmental problems after disposal due to the non-rotating characteristics There was this.

Recently, efforts to reduce carbon dioxide due to global warming have been continuously studied. In particular, since the polymer produced from fossil fuel not only increases the amount of carbon dioxide emission but also has a limited reserve, research on polylactic acid products that can melt and polymerize the polymer synthesized from natural plants is being conducted.

Polylactic acid (PLA) forms a market of 150,000 tons in the world, and is used not only for disposable products using the biodegradable properties of PLA, but also for general plastics such as food packaging materials, containers, and electronics cases. The scope of application is expanding.

However, polylactic acid (PLA) is more expensive than polyethylene (PE) or polypropylene (PP), has a rough feel, has a small volume, and has a problem of low elasticity.

[Preceding technical literature]

Korean Publication Patent: 10-2012-0107092 (Published 2012. 09. 28)

Korea Patent Registration: 10-1075004 (Notice date 2011. 10. 19)

The present invention has been made to solve the conventional problems,

An object of the present invention is to laminate the biodegradable polylactic acid (PLA) having excellent physical properties on the outer surface of the pulp having soft properties and absorbency and volume, improving the physical properties while improving the physical properties while absorbing, soft and bulky The present invention provides an eco-friendly biodegradable nonwoven fabric and a manufacturing apparatus and a method of manufacturing the same, improving the manufacturing cost, reducing the manufacturing cost, and performing 100% biodegradation after disposal.

Eco-friendly biodegradable nonwoven manufacturing apparatus according to an embodiment of the present invention provided to achieve the above object is a first PLA fiber manufacturing apparatus for fiberizing PLA; A mesh belt provided at a lower portion of the first PLA fiber manufacturing machine to integrate the vertically injected PLA fiber into a web form; A pulp supply unit provided at one side of the first PLA fiber manufacturing machine to stack pulp on top of the PLA fiber integrated on the mesh belt; A second PLA fiber making machine provided on one side of the pulp supply unit and integrating PLA into a web form on top of the pulp; A heat fusion unit for heat-sealing the laminates by applying heat to the laminates stacked in order of the PLA fibers, pulp, and PLA fibers; And electrically connected to the first and second PLA fiber makers, the mesh belt and the pulp supply unit to control the injection amount of the PLA fiber produced in the first and second PLA fiber makers, and to control the pulp supply amount of the pulp supply unit. It is configured to include; a control unit for controlling the feed rate of the mesh belt.

The first and second PLA fiber making machine is an extruder for melting and extruding PLA (biodegradable polylactic acid), a spray nozzle formed with hundreds of small orifices (orifice) for spraying the molten PLA in the extruder, and the injection nozzle A hot air fan for stretching PLA sprayed from the spray nozzle by spraying high-pressure hot air from both sides of the cooler, a cooler for cooling the stretched PLA, a cutter for cutting the PLA fiber determined by the stretching, and spraying the cut PLA fiber Characterized in that configured to include a jet.

Between the extruder and the injection nozzle is characterized in that it further comprises a filter device for filtering the molten biodegradable polylactic acid (Poly lactic acid; PLA).

The extruder is divided into first to fifth regions, the first region is 150 to 160 ℃, the second region is 200 to 210 ℃, the third region is 220 to 230 ℃, the fourth region is 230 to 240 ℃, The five regions are characterized in that a temperature of 250 to 260 캜 is set.

The pulp supply unit is characterized in that the carding machine for separating the pulp fibers consisting of sheets or mats into individual fibers are connected.

The control unit controls the injection amount of the first PLA fiber manufacturing machine so that 10% by weight to 40% by weight of PLA fiber is sprayed with respect to the total weight of the nonwoven fabric, and pulp is supplied with 25% by weight to 80% by weight with respect to the total weight of the nonwoven fabric. It controls the supply amount of the supply unit, characterized in that for controlling the injection amount of the second PLA fiber manufacturing machine so that the PLA fiber of 10% by weight to 40% by weight relative to the total weight of the nonwoven fabric.

Eco-friendly biodegradable nonwoven fabric manufacturing method according to an embodiment of the present invention is put PLA (biodegradable polylactic acid) into an extruder (melt) and then spinning through a spinning nozzle formed with hundreds of small orifices (Orifice) and the sides of the spinning nozzle S10 step of stretching and cooling the fiber to high pressure hot air sprayed at high speed in; S20 step of integrating the fiberized PLA in the form of a web (Web) on the mesh belt; S30 step of laminating the pulp on the PLA integrated in the web form; S40 step of stacking the laminated fiber in the form of a web (Web) on the pulp in the step S10; And S50 step of bonding the laminated PLA, pulp, PLA by heat fusion bonding.

The extruder has a first region having a temperature of 150 to 160 ° C., a second region having a temperature of 200 to 210 ° C., a third region having a temperature of 220 to 230 ° C., a fourth region having a temperature of 230 to 240 ° C., and a 250 to 260 ° C. The temperature is divided into a fifth region is set, the PLA is characterized in that complete melting through the first to fifth regions.

And, the step S10 characterized in that it further comprises the step of filtering the molten PLA.

In addition, the PLA is characterized in that selected from the group consisting of poly-D-lactic acid, poly-L-lactic acid, copolymers of D-lactic acid and L-lactic acid.

In addition, the PLA has a melting point of 100 ℃ to 180 ℃, the melt index is 75 to 120g / 10 minutes, the melt density is characterized in that it has a characteristic in the range of 0.98 to 2.24g / cm3 (260 ℃).

The pulp is characterized in that the pulp fibers made of a sheet or mat put into a carding machine and separated into individual fibers.

The PLA is sprayed and integrated 10% to 80% by weight of the total weight of the nonwoven fabric, the pulp is characterized in that the 25% to 80% by weight of the total weight of the nonwoven fabric is supplied. In more detail, the PLA is injected by 10% by weight to 40% by weight in the step S20 is integrated, it is characterized in that 10% by weight to 40% by weight is injected in the step S40.

Eco-friendly biodegradable nonwoven fabric according to an embodiment of the present invention is sprayed on the mesh belt by the manufacturing method of the first PLA fiber layer integrated in the form of a web; A pulp layer laminated on the first PLA fiber layer; The second PLA fiber layer which is sprayed on the pulp layer and integrated in a web form is thermally fused to each other.

Embodiment of the present invention by manufacturing the laminated pulp layer and the PLA layer having biodegradation properties to utilize the soft properties and absorbency and volume of the pulp layer, PLA layer to hold and protect the pulp layer to improve the mechanical strength required in actual use It has the effect of improving the quality of the product.

In addition, it is possible to reduce the manufacturing cost by using the pulp, there is an effect that does not cause environmental problems as 100% biodegradation is made after disposal.

In addition, there is an effect that improves hygiene and safety because it is excellent in breathability and refreshing feeling without releasing carcinogens or substances harmful to hygiene.

In addition, the PLA layer can be washed by holding the surface of the pulp layer, which has the effect that can be used repeatedly.

1 is a schematic diagram for explaining the eco-friendly biodegradable nonwoven fabric manufacturing apparatus according to an embodiment of the present invention.

Figure 2 is a block diagram for explaining the overall configuration of the eco-friendly biodegradable nonwoven fabric manufacturing apparatus according to an embodiment of the present invention.

Figure 3 is a block diagram for explaining the configuration of the first, second PLA fiber manufacturing apparatus in an eco-friendly biodegradable nonwoven fabric manufacturing apparatus according to an embodiment of the present invention.

Figure 4 is a flow chart for explaining a method for producing an eco-friendly biodegradable nonwoven fabric according to an embodiment of the present invention.

Figure 5 is a cross-sectional view showing an eco-friendly biodegradable nonwoven fabric according to an embodiment of the present invention.

The above objects, features and other advantages of the present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. Hereinafter, with reference to the accompanying drawings will be described in detail the eco-friendly biodegradable non-woven fabric and its manufacturing apparatus and manufacturing method of the present invention. For the purposes of this specification, like reference numerals in the drawings denote like parts unless otherwise indicated.

1 is a schematic diagram for explaining an eco-friendly biodegradable nonwoven fabric manufacturing apparatus according to an embodiment of the present invention, Figure 2 is a block diagram for explaining the overall configuration of an eco-friendly biodegradable nonwoven fabric manufacturing apparatus according to an embodiment of the present invention. 3 is a block diagram for explaining the configuration of the first and second PLA fiber manufacturing apparatus in the apparatus for producing an eco-friendly biodegradable nonwoven fabric according to an embodiment of the present invention.

As shown in Figure 1, Figure 2, the manufacturing apparatus of eco-friendly biodegradable nonwoven fabric is the first, second PLA fiber manufacturing apparatus (100,300), pulp supply unit 200, mesh belt 400, the control unit 500, heat-sealed portion ( 600).

First, the first and second

PLA fiber makers

100 and 300 are

extruders

110 and 310 for melting and extruding PLA (biodegradable polylactic acid) introduced as shown in FIG. 3, and hundreds of spraying molten PLA from the extruder. Injection nozzles 130 and 330 having two small orifices formed therein, filter devices 120 and 320 provided between the extruder and the injection nozzle to filter the molten PLA, and PLAs which are provided on both sides of the injection nozzles and sprayed by the injection nozzles. It comprises a hot air fan (140,340) for stretching, a cooler (150,350) for cooling the stretched PLA, cutters (160,360) for cutting the PLA fiber determined by the stretching, and injection holes (170,370) for spraying the cut PLA fiber do. And, the injection port is provided with valves (171, 371) for controlling the injection amount of the PLA fiber is electrically connected to the control unit.

Here, the

extruders

110 and 310 are partitioned into first to fifth regions. Then, the partitioned first region is 150 to 160 캜, the second region is 200 to 210 캜, the third region is 220 to 230 캜, the fourth region is 230 to 240 캜 and the fifth region is 250 to 260 캜. Are set respectively.

The injection nozzles 130 and 330 have 0.88 mm per 12 to 16 cm, and high temperature air having a high velocity distribution forms various filaments between 0.1 μm and 500 μ in diameter.

The pulp supply unit 200 is disposed between the first PLA fiber maker 100 and the second PLA fiber maker 300.

The pulp supply unit 200 may directly supply pulp, but the pulp supply unit 200 is connected to a carding machine 210 for separating the pulp fibers made of sheets or mats into individual fibers to separate pulp fibers made of sheets or mats. It is also possible to feed pulp of individual fibers.

Then, a mesh belt 400 is provided below the first PLA fiber maker 100 and the pulp supply unit 200 and the second PLA fiber maker 300 which are arranged side by side.

The mesh belt 400 integrates and transports the first and second PLA fibers and pulp sprayed from the first PLA fiber maker 100, the pulp supply unit 200, and the second PLA fiber maker 300 in a web form. Let's do it.

The first PLA fiber maker 100, the pulp supply unit 200, and the second PLA fiber maker 300 are electrically connected to the control unit 500, respectively.

The control unit 500 controls the

valves

171, 220, 371 of the first PLA fiber maker 100, the pulp supply unit 200, and the second PLA fiber maker 300 to be sprayed onto the mesh belt 400. Control the injection amount of the second PLA fiber and pulp and control the injection time difference so that the first PLA fiber is sprayed first, the pulp is sprayed on the first PLA fiber, the second PLA fiber is sprayed on the pulp .

And, one side of the mesh belt 400 is provided with a heat-sealed portion 600.

The heat-sealed portion 600 is composed of a calendar through which the laminate laminated in the order of the first PLA fiber, pulp, the second PLA fiber guided by the mesh belt 400 is passed. The calendar is a compression roller that lubricates paper or paper, and heat-bonds the first PLA fibers, the pulp, and the second PLA fibers of the laminate to be passed in a state where heat is applied. At this time, the pattern is engraved on the calendar to increase the bonding force of the first PLA fiber, pulp, the second PLA fiber.

According to an embodiment of the present invention, a method for manufacturing an eco-friendly biodegradable nonwoven fabric is formed by melting PLA (biodegradable polylactic acid) into an extruder and then spinning through a spinning nozzle in which hundreds of small orifices are formed, and spinning nozzles. S10 step of stretching and cooling the fiber by high pressure hot air sprayed at high speed from both sides; S20 step of integrating the fiberized PLA in the form of a web (Web) on the mesh belt; S30 step of laminating the pulp on the integrated PLA in the web form; S40 step of stacking the laminated fiber in the form of a web (Web) on the pulp in the step S10; It is configured to include; and laminated PLA, pulp, S50 step of bonding the PLA by thermal fusion.

Step S10 is made in the first PLA fiber manufacturing machine 100 and the second PLA fiber manufacturing machine 200. First, PLA (biodegradable polylactic acid) is put into the extruder 110 of the first PLA fiber manufacturing machine 100 and melted.

Here, PLA has a melting point of 100 to 180 ℃, the melt index is 20 to 40g / 10 minutes level, melt density of 0.98 to 2.24g / cm 3 (260 ℃) is used that has a characteristic range. In addition, PLA is used selected from the group consisting of poly-D-lactic acid, poly-L-lactic acid, copolymers of D-lactic acid and L-lactic acid.

The extruder 110 may include a first region having a temperature of 150 to 160 ° C., a second region having a temperature of 200 to 210 ° C., a third region having a temperature of 220 to 230 ° C., and a fourth region having a temperature of 230 to 240 ° C. It is partitioned into the 5th area | region set at 250-260 degreeC temperature.

Therefore, PLA is completely dissolved while passing through the first to fifth regions of the extruder 110.

Subsequently, the completely dissolved PLA is filtered through the filter device 120 and supplied to the injection nozzle 130, and the PLA supplied to the injection nozzle 130 is injected through hundreds of small orifices.

Subsequently, the injected PLA is stretched by the high pressure hot air sprayed at high speed by the hot air fan 140 and cooled by the cooler to be fiberized.

And the fiberized PLA is cut through the cutter 160 is injected through the injection port 170. At this time, the first PLA fiber is injected into the injection port 170 is 10% by weight to 40% by weight relative to the total weight of the nonwoven fabric.

Step S20 integrates the first PLA fibers sprayed on the mesh belt 400 in the form of a web. In this case, the web formed by the Melt-Blown method has an isotrophic formation. That is, since the web is formed for hot air, the fibers are arbitrarily arranged in the machine direction and the machine width direction, and are not sufficiently cooled so that mutual bonding is achieved by thermal bonding between the fibers.

Step S30 stacks the pulp sprayed from the pulp supply unit 200 on the first PLA fiber is integrated and transported in the form of a web. At this time, the laminated pulp is sprayed from 25% by weight to 80% by weight relative to the total weight of the nonwoven fabric.

In step S40, the second PLA fiber is laminated on the pulp. The second PLA fiber is manufactured in the same manner as step S10 through the second PLA fiber manufacturing machine (300).

In more detail, PLA is injected into the extruder 310 of the second PLA fiber maker 300, and PLA is completely dissolved while passing through the first to fifth regions of the extruder 310. And, the complete dissolved PLA is filtered to the filter device 320 is supplied to the injection nozzle 330 and injected through hundreds of small orifices (Orifice). Subsequently, the injected PLA is stretched by the high pressure hot air of the hot air blower 340 and cooled by the cooler 350 to be fiberized. And, the fiberized PLA is cut through the cutter 360 is injected through the injection hole 370. At this time, the second PLA fiber is injected into the injection hole 370 is 10% by weight to 40% by weight relative to the total weight of the nonwoven fabric.

As described above, the second PLA fiber manufactured in the second PLA fiber maker 300 is integrated in a web form on the pulp.

In step S50, the laminate laminated in the order of the first PLA fiber, the pulp, and the second PLA fiber on the mesh belt 400 is passed through the heat-sealed portion 600 to thermally bond the laminate to each other.

Eco-friendly biodegradable nonwoven fabric produced by the manufacturing method is sprayed on the mesh belt 400 as shown in Figure 5, the first PLA fiber layer integrated in the web form, the pulp layer laminated on the first PLA fiber layer, the It is injected onto the pulp layer and comprises a second PLA fiber layer integrated in the form of a web.

(Example 1)

10% by weight relative to the total weight of the nonwoven fabric on the mesh belt, the first pulp fiber layer integrated in the form of a web, the pulp layer, the upper pulp layer laminated 80% by weight relative to the total weight of the nonwoven fabric on the first PLA fiber layer 10 wt% of the total weight of the nonwoven fabric was sprayed on to form a second PLA fiber layer integrated in a web form, and the non-woven fabric was manufactured by heat-sealing them.

(Example 2)

25% by weight of the total weight of the nonwoven fabric is sprayed onto the mesh belt, and the pulp layer and the pulp layer are stacked by spraying 50% by weight of the total weight of the nonwoven fabric on the first PLA fiber layer and the first PLA fiber layer. 25 wt% of the total weight of the nonwoven fabric was sprayed on to form a second PLA fiber layer integrated in a web form, and the nonwoven fabric was manufactured by heat-sealing them.

(Example 3)

40% by weight relative to the total weight of the nonwoven fabric on the mesh belt, the first pulp fiber layer integrated in the form of a web, the pulp layer, pulp layer laminated by 25% by weight relative to the total weight of the nonwoven fabric on the first PLA fiber layer 40 wt% of the total weight of the nonwoven fabric was sprayed on to form a second PLA fiber layer integrated in a web form, and a nonwoven fabric was manufactured by thermally bonding them together.

(Comparative Example 1)

45% by weight relative to the total weight of the nonwoven fabric on the mesh belt, the pulp layer, pulp layer is laminated by spraying 10% by weight relative to the total weight of the nonwoven fabric on the first PLA fiber layer, the first PLA fiber layer integrated in the web form 45 wt% of the nonwoven fabric was sprayed on to form a second PLA fiber layer integrated in a web form, and the nonwoven fabric was thermally fused to each other.

(Comparative Example 2)

20% by weight of pulp, 40% by weight of polyethylene (PE), and 40% by weight of polypropylene (PP) were mixed and composite sprayed to prepare a nonwoven fabric.

Softness, volume, and water absorption were evaluated for each of the nonwoven fabrics of Examples 1, 2, and 3 and Comparative Examples 1 and 2, and are shown in [Table 1].

Table 1

	Example 1	Example 2	Example 3	Comparative Example 1	Comparative Example 2
Soft	○	○	○	×	△
Bulky	○	○	○	△	△
Absorbency	○	○	○	△	×

As shown in Table 1, Examples 1, 2, and 3 show that the first PLA fiber layer and the second PLA fiber layer wrap the outer surface of the pulp layer to protect the pulp layer, and hold the pulp without breaking the pulp or dust. Played a role. In addition, it could be seen that due to the pulp layer to maintain a proper sense of volume, it was able to feel a soft texture, excellent absorbency.

In Comparative Example 1, the first PLA fiber layer and the second PLA fiber layer were formed so thick that the breakage of the first PLA fiber layer and the second PLA fiber layer occurred, the texture was rough, and the volume and absorbency were not good. That is, it can be seen that the first PLA fiber layer and the second PLA fiber layer is preferably used 40% by weight or less based on the total weight of the nonwoven fabric.

In addition, Comparative Example 2 was inferior in volume and feel compared to the examples, and the absorbency was also not good.

Environmental resistance was evaluated about each of the nonwoven fabrics of Examples 1, 2 and 3 and Comparative Examples 1 and 2. That is, the state of the nonwoven fabric is measured by spraying the front surface of the nonwoven fabric 50 hours (hr) and 75 hours (hr) before the time elapsed under the same conditions as when the nonwoven fabric is buried in the ground. Indicated.

TABLE 2

	Example 1		Example 2		Example 3		Comparative Example 1		Comparative Example 2
	Force (N)	ELong (%)	Force (N)	ELong (%)	Force (N)	ELong (%)	Force (N)	ELong (%)	Force (N)	ELong (%)
Before time-lapse	20.5	35.6	23.5	27.6	25.2	28.9	5.1	8.0	19.2	31.6
50 hours	12.9	6.5	15.9	8.5	16.3	12.0	3.5	4.0	9.0	21.0
75 hours	Not measurable		Not measurable		Not measurable		Not measurable		5.9	9.5

As shown in Table 2, Example 1 exhibited an elongation of 35.6% at 20.5N before time elapsed of the manufactured nonwoven fabric, exhibited an elongation of 6.5% at 12.9N after 50 hours of nonwoven fabric, and 75 hours of nonwoven fabric. After the corrosion of the pulp proceeds, the first PLA fibers and the second PLA fibers were corrosion due to biodegradation was unable to measure.

In addition, Example 2 exhibited an elongation of 27.6% at 23.5 N before time elapsed of the manufactured nonwoven fabric, an elongation of 8.5% at 15.9 N after 50 hours of nonwoven fabric, and corrosion of pulp after 75 hours of nonwoven fabric. In progress, the first PLA fibers and the second PLA fibers were torn due to the progress of the corrosion was not possible to measure.

In addition, Example 3 exhibited an elongation of 28.9% at 25.2N before the time-lapse of the manufactured nonwoven fabric, an elongation of 12.0% at 16.3N after 50 hours of nonwoven fabric, and corrosion of the pulp progressed after 75 hours of nonwoven fabric. The first PLA fibers and the second PLA fibers were torn due to the progress of corrosion, and thus could not be measured.

In Comparative Example 1, the elongation was 8.0% at 5.1N before the time elapsed of the manufactured nonwoven fabric, the elongation was 4.0% at 3.5N after 50 hours of nonwoven fabric, and the corrosion of the pulp progressed after 75 hours of nonwoven fabric. The first PLA fiber and the second PLA fiber could not be measured due to the breakage.

In Comparative Example 2, the elongation was 31.6% at 19.2N before the time elapsed of the manufactured nonwoven fabric, the elongation was 21.0% at 9.0N after 50 hours of nonwoven fabric, and the elongation was 9.5 at 5.9N after 75 hours of nonwoven fabric. % Is indicated. That is, the corrosion of the pulp proceeded, but polyethylene (PE) and polypropylene (PP) were present as they were.

As such, the present invention improves the soft properties, absorbency and volume of the pulp layer by laminating the pulp layer and the PLA layer having biodegradable properties, and the PLA layer to hold and protect the pulp layer, thereby improving the mechanical strength required in actual use.

In addition, by using the pulp it is possible to reduce the manufacturing cost, and 100% biodegradation after disposal does not cause environmental problems.

In addition, without discharging a carcinogen or a substance harmful to hygiene, the hygiene and safety is improved by excellent breathability and refreshing feeling.

In addition, the PLA layer can be washed by holding the surface of the pulp layer, thereby enabling repeated use several times.

[Description of the code]

100: first PLA fiber manufacturing machine 200: pulp supply unit

210: carding machine 300: second PLA fiber manufacturing machine

110,310: Extruder 120,320: Filter device

130,330: injection nozzle 140,340: hot air fan

150,350: cooler 160,360: cutter

170,370: nozzle 171,220,371: valve

400: mesh belt 500: control unit

600: heat seal

Claims

A first PLA fiber maker for fiberizing PLA;

A mesh belt provided at a lower portion of the first PLA fiber manufacturing machine to integrate the vertically injected PLA fiber into a web form;

A pulp supply unit provided at one side of the first PLA fiber manufacturing machine to stack pulp on top of the PLA fiber integrated on the mesh belt;

A second PLA fiber making machine provided on one side of the pulp supply unit and integrating PLA into a web form on top of the pulp;

A heat fusion unit for heat-sealing the laminates by applying heat to the laminates stacked in order of the PLA fibers, pulp, and PLA fibers; And

A control unit electrically connected to the first and second PLA fiber makers and the pulp supply unit to control the injection amount of the PLA fiber produced by the first and second PLA fiber makers and to control the pulp supply amount of the pulp supply unit;

Eco-friendly biodegradable nonwoven manufacturing apparatus comprising a.
The method of claim 1,

The first and second PLA fiber making machine is an extruder for melting and extruding PLA (biodegradable polylactic acid), a spray nozzle formed with hundreds of small orifices (orifice) for spraying the molten PLA in the extruder, and the injection nozzle A hot air fan for stretching PLA sprayed from the spray nozzle by spraying high-pressure hot air from both sides of the cooler, a cooler for cooling the stretched PLA, a cutter for cutting the PLA fiber determined by the stretching, and spraying the cut PLA fiber Eco-friendly biodegradable nonwoven fabric manufacturing apparatus characterized in that it comprises a nozzle to.
The method of claim 2,

Eco-friendly biodegradable nonwoven fabric manufacturing apparatus, characterized in that further comprising a filter device for filtering the molten PLA between the extruder and the injection nozzle.
The method of claim 2,

The extruder is divided into first to fifth regions, the first region is 150 to 160 ℃, the second region is 200 to 210 ℃, the third region is 220 to 230 ℃, the fourth region is 230 to 240 ℃, Eco-friendly biodegradable nonwoven fabric production apparatus, characterized in that the five areas are set the temperature of 250 ~ 260 ℃.
The method of claim 1,

The pulp supply unit is an eco-friendly biodegradable nonwoven fabric manufacturing apparatus, characterized in that the carding machine for separating the pulp fibers made of a sheet or mat into individual fibers are connected.
The method of claim 1,

The control unit controls the injection amount of the first PLA fiber manufacturing machine so that 10% by weight to 40% by weight of PLA fiber is sprayed with respect to the total weight of the nonwoven fabric, and pulp is supplied with 25% by weight to 80% by weight with respect to the total weight of the nonwoven fabric. An eco-friendly biodegradable nonwoven fabric manufacturing apparatus characterized by controlling the supply amount of the supply, and controlling the injection amount of the second PLA fiber manufacturing machine so that the PLA fiber of 10% by weight to 40% by weight relative to the total weight of the nonwoven fabric.
PLA (biodegradable polylactic acid) is put into an extruder and melted, and then spun through a spinning nozzle formed with hundreds of small orifices and drawn and cooled by high-pressure hot air sprayed at high speed from both sides of the spinning nozzle. Step S10;

S20 step of integrating the fiberized PLA in the form of a web (Web) on the mesh belt;

S30 step of laminating the pulp on the PLA integrated in the web form;

S40 step of stacking the laminated fiber in the form of a web (Web) on the pulp in the step S10; And

S50 step of thermally bonding the laminated PLA, pulp, PLA;

Eco-friendly biodegradable nonwoven fabric containing method.
The method of claim 7, wherein

The extruder has a first region having a temperature of 150 to 160 ° C., a second region having a temperature of 200 to 210 ° C., a third region having a temperature of 220 to 230 ° C., a fourth region having a temperature of 230 to 240 ° C., and a 250 to 260 ° C. Eco-friendly biodegradable non-woven fabric manufacturing method characterized in that partitioned into a fifth zone is set, the PLA is completely dissolved through the first to fifth zones.
The method of claim 7, wherein

The step S10 is eco-friendly biodegradable nonwoven fabric manufacturing method characterized in that it further comprises the step of filtering the molten PLA.
The method of claim 7, wherein

The PLA is an eco-friendly biodegradable nonwoven fabric manufacturing method, characterized in that selected from the group consisting of poly-D-lactic acid, poly-L-lactic acid, copolymers of D-lactic acid and L-lactic acid.
The method of claim 7, wherein

The PLA has a melting point of 100 ℃ to 180 ℃, the melt index is 75 to 120 g / 10 minutes, melt density is 0.98 to 2.24 g / cm 3 (260 ℃) characterized in that the eco-friendly biodegradable non-woven fabric manufacturing method.
The method of claim 7, wherein

The pulp is an eco-friendly biodegradable non-woven fabric manufacturing method characterized in that the pulp fibers made of a sheet or mat put into a carding machine and separated into individual fibers.
The method of claim 7, wherein

The PLA is sprayed and integrated by 10% to 80% by weight of the total weight of the nonwoven fabric, the pulp is 25 to 80% by weight of the total weight of the nonwoven fabric is environmentally-friendly biodegradable nonwoven fabric manufacturing method characterized in that the supply.
The method of claim 13,

Wherein the PLA is 10% by weight to 40% by weight injected in the step S20 integrated, the eco-friendly biodegradable nonwoven fabric manufacturing method characterized in that the 10% by weight to 40% by weight injected in the step S40.
The first PLA fiber layer integrated in the form of a web on the mesh belt by the manufacturing method of any one of claims 7 to 14; A pulp layer laminated on the first PLA fiber layer; Eco-friendly biodegradable nonwoven fabric comprising a second PLA fiber layer is sprayed on the pulp layer integrated in the form of a web is manufactured by mutual heat-sealing.