KR20130040530A - Functional biodegradable fiber and preparing thereof, nonwoven made of them - Google Patents

Abstract

In the present invention, in the biodegradable fibers, the biodegradable resin is formed of 90 to 98% by weight and the functional masterbatch 2 to 10% by weight, the functional masterbatch 7 to 27 parts by weight of the ocher component and 100 parts by weight of the biodegradable resin and The present invention relates to a functional biodegradable short fiber containing 0.14 to 0.21 parts by weight of silver and a method for preparing the same, and a nonwoven fabric prepared therefrom.

Description

Functional biodegradable short fibers and manufacturing method thereof, nonwoven fabric produced therefrom {Functional biodegradable fiber and preparing sweetie, nonwoven made of them}

The present invention relates to a biodegradable fiber, and more particularly, to a biodegradable short fiber made from aliphatic polyester which is a biodegradable polymer and a method for producing the same, and a nonwoven fabric prepared therefrom.

The present invention relates to a functional biodegradable short fiber and a method for preparing the same and a nonwoven fabric using the same, and in particular, a functional biodegradable short fiber and a method for manufacturing the same as a nonwoven short fiber which is given antimicrobial, deodorizing and far infrared effect by using a functional masterbatch. It relates to a nonwoven fabric using the same.

In accordance with the times of environmental pollution prevention, the importance of degradable polymers has been fully recognized. The environmental pollution problem caused by the disposal of industrial and household polymers has been a major obstacle to the polymer industry, which has been recognized for its durability. Academia and industry have developed and commercialized environmentally degradable polymers to solve these problems. The country has legally mandated the use of these environmentally degradable polymers.

Synthetic polymers used for biodegradability include aliphatic polyesters (AP) and polyglycolic acid (PGA), which are represented by polycarprolacton (PCL), polylactic acid (PLA), etc. These are relatively good physical properties.

Among them, aliphatic polyester polymers (PLA, PCL, PBS / PBSA / PBAT, etc.) are the most studied because of their excellent processability and easy control of their decomposition properties, especially in the case of polylactic acid (PLA). It is forming a market of 10,000 tons, and its application range is extended to fields where general plastics such as food packaging materials, containers, and electronics cases were used. To date, the main use of PLA resins is disposable products utilizing the biodegradable properties of PLA, such as food containers, wraps, films and the like. PLA is currently produced by Natureworks in the US and Toyota in Japan.

However, existing PLA resins are easily damaged in the case of thin film products due to lack of moldability, mechanical strength and heat resistance. If it rises above, there is a problem that deformation occurs in the shape of the molded product.

Japanese Laid-Open Patent Nos. 2005-200517, 2005-220177 and 2005-336220 disclose a technique of mixing glass fibers to improve heat resistance and mechanical strength at the same time when using PLA resin, but the glass fibers are discarded. There is a disadvantage that it is not biodegradable after.

In addition, Korean Patent No. 854168 discloses an acrylate polymer or copolymer comprising a PLA resin having a terminal hydroxyl group or a carboxylic acid group or having both a terminal hydroxyl group and a carboxylic acid group, and an average of about 2 to about 15 free epoxide groups per molecule. A melt-processable PLA resin comprising long-chain molecules comprising a reaction product with is disclosed. However, the fiber produced using the PLA resin prepared therefrom has a drawback that it is not brittle and can not be used for a variety of low elongation characteristics.

In Korean Patent Application Publication No. 1996-3672, polypropylene master batch and polypropylene resin for general nonwoven fabric are mixed and melt spun by adding antimicrobial nonporous inorganic ceramic and far infrared radioactive oxide ceramic containing silver compound and zirconium compound to polypropylene resin. A method for producing a polypropylene long fiber nonwoven fabric having excellent antibacterial and deodorizing properties, characterized by forming a web and thermally bonding it, has been proposed.

However, the inorganic ceramic applied in the patent is difficult to control the dispersibility of the particles, there is a problem such as trimming due to the pressure rise by the fine particles in the three denier spinning.

In addition, the Republic of Korea Patent Invention No. 536004 polyamide or a processing bath solution in which 10 to 20 parts by weight of chitosan, 2.0 to 4.0 parts by weight of chitosan reaction catalyst, 0.5 to 1 parts by weight of Pepol and 75 to 85 parts by weight of ocher liquor A method for producing a spunbond nonwoven fabric having a composite function of far-infrared radiation and antibacterial deodorization, which is applied to a polyolefin long fiber spunbond nonwoven fabric by a kislow and spray dispersion method, has been proposed.

When the kiss roll and the spray is applied, it may be difficult to uniformly disperse the containing material, the composite function effect may be expressed, but there is a disadvantage that the thermal stability or adhesion may be degraded.

Therefore, there is an urgent need to develop biodegradable fibers and nonwoven fabrics which are excellent in biodegradability and intrinsic properties of PLA resin, which is a biodegradable resin.

In order to solve the above problems, an object of the present invention is to provide a functional biodegradable short fibers and a manufacturing method thereof having excellent antimicrobial, deodorizing and far-infrared effect by using a functional master batch containing ocher.

In addition, to provide a functional biodegradable short fibers and a method for producing the same that can change the antimicrobial and far-infrared effect by adjusting the ratio of the functional masterbatch containing the ocher component.

In addition, the present invention is to provide a functional biodegradable short fibers and a method for producing the same, the above properties are maintained for a long time, soft to the touch.

In order to achieve the above object, the present invention, in the biodegradable fiber, is formed of 90 to 98% by weight of biodegradable resin and 2 to 10% by weight of the functional masterbatch, the functional masterbatch to 100 parts by weight of biodegradable resin It provides a functional biodegradable short fibers, characterized in that it comprises 7 to 27 parts by weight of the ocher component and 0.14 to 0.21 parts by weight of the silver component.

In addition, the biodegradable resin of the present invention provides a functional biodegradable short fibers, characterized in that the PLA resin is composed of 60 to 95% by weight, PBS-based resin is composed of 5 to 40% by weight.

In addition, the biodegradable resin of the present invention provides a functional biodegradable short fiber, characterized in that the melt index (MI) is 15 ~ 45g / 10min, the melting point is 145 to 170 ℃ measured by DSC.

In addition, the PBS resin of the present invention is at least one selected from the group comprising polybutylene succinate (PBS), polybutylene succinate-co-adipate (PBSA) or polybutylene succinate fumaric (PBSF), or a mixture thereof. Provides biodegradable short fibers.

In addition, it provides a functional biodegradable short fibers, characterized in that the MIt value of the mixture of the biodegradable resin and the functional masterbatch is melted from 1 to 5.

In another aspect, the present invention provides a method for producing a biodegradable fiber, a melting step of mixing and melting 90 to 98% by weight of the biodegradable resin and 2 to 10% by weight of the functional masterbatch to form a mixture; Spinning the mixture at a speed of 80 to 200 m / min at a temperature of 200 to 240 ° C. to produce undrawn yarn; An extension step of stretching the undrawn yarn to a draw ratio of 1.0 to 3.0; Crimping to impart crimp to the stretched stretched yarn; A heat setting step of attaching and heat-setting the spinning oil to the surface of the crimped stretched yarn after applying the crimp; And it provides a method for producing a functional biodegradable short fibers comprising the step of forming a short fiber to cut the heat-set stretched yarn into fibers of a predetermined length.

In addition, the biodegradable resin provides a method for producing functional biodegradable short fibers, characterized in that consisting of a ratio of 60 to 95% by weight PLA resin and 5 to 40% by weight PBS resin.

In addition, the functional masterbatch provides a method for producing functional biodegradable short fibers, characterized in that it comprises 7 to 27 parts by weight of ocher component and 0.14 to 0.21 parts by weight of silver component in 100 parts by weight of the biodegradable resin.

In addition, the biodegradable resin has a melt index (MI) of 15 ~ 45g / 10min, the melting point measured by DSC provides a method for producing a functional biodegradable short fibers, characterized in that.

In addition, the PBS-based resin is at least one selected from the group consisting of polybutylene succinate (PBS), polybutylene succinate-co-adipate (PBSA) or polybutylene succinate fumaric (PBSF), or a mixture thereof. It provides a method of manufacturing.

In addition, the stretching step provides a method for producing a functional biodegradable short fibers, characterized in that the stretching method in a solution of multi-stage stretching or bath stretching.

The stretching step more preferably provides a method for producing a functional biodegradable short fiber, characterized in that the stretching method in the bath stretching in the bath.

Also provided is a biodegradable nonwoven fabric prepared using the biodegradable fibers according to the present invention.

Biodegradable short fibers and nonwovens according to the present invention has a degree of biodegradation suitable for environmental standards.

Functional biodegradable short fibers and nonwovens according to the present invention exhibit excellent antimicrobial, deodorizing and far infrared effect.

In addition, the functional biodegradable short fibers and nonwoven fabric according to the present invention has the effect of changing the antibacterial and far-infrared effect by adjusting the ratio of the functional masterbatch.

In addition, the functional biodegradable short fibers and nonwoven fabrics according to the present invention have the effect of uniformly dispersing the ocher components throughout the short fibers, and the effect is maintained for a long time, spunbond nonwoven fabric as a thermal bond nonwoven fabric Compared to the softening effect.

1 is a manufacturing process of the biodegradable short fibers according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts have the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

The terms "about "," substantially ", etc. used to the extent that they are used herein are intended to be taken to mean an approximation of, or approximation to, the numerical values of manufacturing and material tolerances inherent in the meanings mentioned, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

According to a preferred embodiment of the present invention, the biodegradable resin and the functional masterbatch may be performed in a melting step, spinning step, stretching step, crimping step, heat setting step, and short fiber forming step.

In more detail, the functional biodegradable short fibers are mixed by melting the biodegradable resin and the functional masterbatch (melting step), and the unmelted yarn is produced by spinning the melt (spinning step). The spun unstretched yarn is subjected to a crimping step of imparting crimp to the stretched filament through the stretching step. After the heat setting step of attaching and heat-setting the liquid resin containing the hydrophilic spinning emulsion emulsion on the crimped filament to the surface, it is cut by a predetermined length to form short fibers (short fiber forming step).

The raw material of the short fiber according to the present invention may be made of a biodegradable resin and a functional masterbatch, and preferably contained in an amount of 90 to 98% by weight of the biodegradable resin and 2 to 10% by weight of the functional masterbatch.

The biodegradable resin is preferably contained in an amount of 60 to 95% by weight of the polylactic acid (PLA, PLA) resin and 5 to 40% by weight of the PBS resin.

The functional masterbatch is composed of a biodegradable resin, an ocher component and a silver component. The functional masterbatch is characterized in that the mixture of 7 to 27 parts by weight of the ocher component and 0.14 to 0.21 parts by weight of the silver component to 100 parts by weight of the biodegradable resin.

PLA resin in the present invention refers to the entire polymer consisting of lactic acid (Lactic acid) as a monomer, PLA resin is thermal properties and physical properties according to the isomer D-Lactide, L-Lactide content and arrangement (random copolymerization, block copolymerization) Characteristics may vary.

The PBS-based resin is preferably melted alone or mixed with PBS (Polybutylene Succinate), PBSA (Polybutylene Succinate-co-adipate) or PBSF (Polybutylene succinate fumaric).

Fibers produced within the above range is characterized by excellent physical properties and excellent carding properties when manufacturing the nonwoven fabric. When the PLA resin is mixed below the above range, the elongation is high, and when the nonwoven fabric is manufactured, a phenomenon occurs when carding is cut. When the PBS-based resin is below the above range, the radioactivity is poor, and it is difficult to manufacture the fiber or the nonwoven thermal Bonding force is lowered when bonding, and there is a problem in that shrinkage phenomenon occurs during high temperature bath dyeing.

The melt index (MI) of the biodegradable resin is preferably 15 to 45 g / 10 min (230 ° C., 2.16 kg load), and the melting point (Tm) measured by DSC is preferably 145 to 170 ° C. As the melt index is lower, the stiffness and low elongation of the fiber can be imparted, but since the viscosity is lowered, the workability becomes worse. If the melt index is too high, the rigidity of the fiber is not only lowered, but the spinning is difficult.

In this specification, the MIt value is defined as a value obtained by dividing the melt index (MI-230) measured at 230 ° C. by the melt index (MI-190) measured at 190 ° C. (“MIt = (MI-230) ÷ (MI-190 It is preferable that the MIt value of the resin in which the biodegradable resin and the functional masterbatch of the present invention are mixed is 5 or less, and more preferably 1 to 5. The MIt value is a self-indicator that can represent the thermal stability of the polymer during fiber spinning. The lower the MIt value, the better the thermal stability. In particular, when the MIt value of the mixed resin is within the above range, the MIt value is excellent. .

In addition, the ocher component may further include formalin, and the formalin may include 15 to 20 parts by weight based on the ocher component 100.

When the ocher component is included below the above range, there is a problem in the expression of antimicrobial and far-infrared effects, and in the case of exceeding the above range, there is a problem in that the physical properties such as trimming during spinning are lowered, and the bonding strength is weak during thermal bonding, thereby lowering productivity. .

On the other hand, the functional masterbatch may further include an additive, the additive may be selected from one or more selected from the group consisting of colorants such as antioxidants, UV stabilizers, process stabilizers and white pigments, the additive is a functional masterbatch It is preferably included in 0.1 to 3.0 parts by weight based on 100.

Melt index (M.I.) of the biodegradable resin is preferably 15 to 45 g / 10 min, the melting point (Tm, DSC) is 145 to 170 ℃.

The ocher component absorbs and radiates large amounts of human-friendly far infrared rays, called life rays, which are most effective in activating substances, and the most fundamental effect of ocher is this far infrared ray. Ocher is a honeycomb structure with a wide surface, and a large number of spaces have a double layer structure. In this sponge-like hole, a large amount of far-infrared rays of sunlight are absorbed, stored, and radiated to stimulate molecular activity of other objects. Therefore, it also reacts with organic matter, and the yellow soil absorbs waste products including organic substances such as fat of the skin to make and release the ocher-organic complex to promote blood circulation and promote health. And the ocher releases anions, which absorb and neutralize the cations released around the living environment from various pollutions to make the living environment comfortable, and have a very beneficial effect on the human body by performing antibacterial, deodorizing and moisture-proofing functions. Ocher generally contains water, but depending on the change in humidity, it can release or absorb water molecules possessed by the loess.

The loess is mainly distributed in Northeast Asia, including the Korean Peninsula and the Yellow River coast of China, and is mainly yellowish brown lime which contains quartz and other horns, etc., and silica (SiO2) 60 to 65% by weight, iron powder. 5 to 6% by weight, 10 to 13% by weight of alumina (Al2O3), about 2% by weight of magnesium (Mg) and sodium (Na), the chemical composition of about 1.5% by weight of Kali, 8% by weight of lime, and decomposability It has been known to have excellent absorption, and has a beneficial weakness to the human body.

In addition, ocher is characterized by being yellow or red by iron oxide minerals, yellow or red clay does not have the characteristics of clay minerals, but because they do not have iron oxide minerals do not have the function of iron oxides. These iron oxide minerals (mainly composed of goethite, ferriterite and hematite) have the property of absorbing heavy metals or radioactive substances present in the surroundings.

Formalin contained in the ocher component to kill the harmful microorganisms in the loess to express the bactericidal, antimicrobial properties and excellent properties of the loess is exerted.

Scientifically proven silver benefits include strong sterilizing power to sterilize over 650 kinds of harmful bacteria, balance the hormonal system in the human body, block electromagnetic and water waves, emit far infrared rays, release anions and silver (Ag +) ions, antibacterial and antifungal action. Can be mentioned.

In addition, the silver component may be included to maximize the strong antimicrobial activity at the same time to increase the anion effect on the basis of the high absorption power and far infrared effect of ocher.

After melting the biodegradable resin and the functional masterbatch together, the melt is spun at a spinning temperature of 200 to 240 ° C. and a spinning speed of 80 to 200 m / min. The spun undrawn yarn is adjusted to a draw ratio between 1.0 and 3.0, stretched to a preheating temperature of 30 to 60 ° C. to impart crimp in the crimper, and a liquid resin containing a functional spinning emulsion emulsion adheres to the surface of the crimped drawn yarn. Let's do it.

In the method for producing a biodegradable fiber of the present invention, it can be divided into one step equipment and two step equipment with respect to the spinning and stretching step. The biodegradable fiber of the present invention can be produced in two equipments, and has the following physical and physical properties.

One-step facility is a facility consisting of a series of processes of spinning and stretching, and the process of quenching the polymer discharged through the spinneret (cooling air of 10 ~ 50m / sec), and the spinning speed is 40 to slower than the two-step facility. It is characterized by 300 m / min. Low spinning speed and quenching of molten polymer discharged through spinneret resulted in low crystallization and spinning orientation of fiber produced by two-step equipment. Compared with the non-drawn yarn produced by the low tensile strength tends to show a high elongation.

The two-step facility is divided into two stages of spinning and stretching. It is a step of slow cooling (1-4m / sec cooling air) the polymer discharged through the spinneret. min is characteristic. The spin crystallization and spinning orientation of the fiber produced by high cooling rate and slow cooling of the molten polymer discharged through the spinneret is higher than that of the one-step facility. Tensile strength and elongation tend to be higher than gentleman's.

In order to increase the magnification of the stretching, stretching may be performed in three to four stages of multistage stretching and bath stretching in a bath at 60 to 100 ° C. In addition, when extending | stretching as mentioned above, it can extend | stretch stably without cutting.

After stretching the polymer, the crimping step of imparting crimp to the stretched filament is carried out, and then the liquid filament containing the functional spinning emulsion is sprayed and attached to the filament to which the spinning oil is attached to the fiber surface. The spinning emulsion used in the present invention is not particularly limited, and the hydrophilic or hydrophobic emulsion used in general synthetic fiber production is used. The amount of the spinning oil used is preferably to attach the spinning oil to the fiber surface so that 0.3 to 0.5 parts by weight based on 100 parts by weight of the total fiber.

The liquid resin containing the spinning emulsion emulsion serves as an antistatic to relieve frictional heat when the biodegradable resin is solidified, and may include 0.3 to 1 parts by weight based on the functional biodegradable short fibers 100 prepared above.

After the heat setting step of hot air drying with 60 to 70 ° C. hot air directly or indirectly contacted with the spinning oil-attached fiber, cutting the fiber to a length of 40 to 65 mm, thereby reducing the final fiber fineness to 2 It is preferable to produce biodegradable short fibers aiming at 10 to 10 denier and an average elongation of 50 to 150%.

Biodegradable short fibers prepared by the above method can be applied to all applications in which thermoplastic synthetic fibers (PP, PET, Nylon, etc.) are used. For example, it can be used as automotive interior materials such as car trims, air cleaners, or quilts or stuffed cotton pads, which are completely biodegradable, which has advantages of preventing environmental pollution and harmless components.

In addition, the biodegradable fibers produced by the present invention can be made of various types of nonwoven fabrics, such as needle punching, spun lacing, thermal bonding, airlaid, chemical bonds and their composite processing, the thermal bond processing for manufacturing the nonwoven fabric is calender It is preferable to use a bonding method.

In the calender bonding method used in the present invention, after non-woven fabric is produced, non-woven fabric is made by thermally bonding the fibers while passing through two hot rolls having the web laminated on the conveyor between 90 and 130 ° C. can do.

Therefore, in the present invention, in manufacturing a thermal bond nonwoven fabric through a pilot calender bonding facility, the hot roll temperature of hot roll is most suitable for the nonwoven fabric production speed, the shape of the embossed pattern of the roll, the setting temperature of the roll and the surface temperature. It is not an absolute result but a relative result because it may vary depending on the production and equipment conditions of the calender bonding method such as difference and the fineness of short fibers used as raw materials.

Through the following examples will be described in more detail.

Example  One

Preparation of Functional Masterbatch

The master batch was prepared by mixing 20 parts by weight of ocher powder and 0.20 parts by weight of silver nano based on 100 parts by weight of biodegradable resin composed of 70% by weight PLA resin and 25% by weight PBS resin.

(Production of biodegradable short fibers)

The biodegradable resin, composed of 70 wt% PLA resin and 25 wt% PBS resin, was spun at a spinning temperature of around 250 ° C. and a spinning speed of 150 m / min. The undrawn yarn was prepared by mixing 2 wt% of the master batch prepared in the above.

The unstretched yarn is adjusted to the draw ratio 2, the preheating temperature is drawn at 50 ° C. to impart crimp in the crimper, and the liquid resin containing the hydrophilic spinning emulsion emulsion is sprayed to give 100 wt% of the total functional biodegradable short fiber. Attached to the fiber surface to be contained in 0.4 parts by weight, and after passing through the heat setting step at 65 ℃, the length of the fiber is cut to 50 mm to the final fineness of 6 denier, the average elongation is 100% functional biodegradable Fibers were prepared.

(Manufacture of thermal bonding nonwoven fabric)

The biodegradable short fibers obtained by the above method were carded with a card machine at a speed of 100 mpm, a nonwoven web was produced and passed between two hot rolls to prepare a calender bonded nonwoven fabric having a basis weight of 40 gsm.

As the temperature of the hot roll was changed to 90 to 130 ° C., an optimum temperature having the best tensile strength of the nonwoven fabric was found as the thermal fusion temperature (optimum temperature).

Example  2

The same process as in Example 1 was carried out except that the non-drawn yarn was prepared by mixing 5 wt% of the master batch prepared above.

Example  3

The same procedure as in Example 1 was carried out except that the non-drawn yarn was prepared by mixing 10 wt% of the master batch prepared above.

Comparative example  One

Work was carried out in the same manner as in Example 1, except that the biodegradable resin composed of 70% by weight PLA resin and 25% by weight PBS-based resin without adding a functional master batch.

Comparative example  2

The same procedure as in Example 1 was carried out except that the non-drawn yarn was prepared by mixing the master batch prepared above to contain 30 wt%.

◎ The workability and physical properties of the fibers and the nonwoven fabrics of the above examples and the comparative examples were measured and evaluated, and the far infrared rays and anions of the respective nonwoven fabrics were measured.

* Method of Analysis

Melt Index (M.I.:Melt Index): According to ASTM D1238

* hPP and random copolymer series 230 ℃, load of 2.16 kg

* PE series such as HDPE, LDPE, 190 ℃, 2.16 kg load

2. Radioactivity: Evaluated by measuring the number of fiber breaks and the number of drop occurrences directly under the detention of 32,000 holes.

Only one round of trimming or dropping per hour: ◎

Only 1 to 3 times / time of trimming or dropping: ○

But not more than 3 times / drop: △

No radiation: X

3. Single fiber fineness: measure fineness based on ASTM D1577

4. Non-woven carding property: If the short fiber passes through the carding machine, curling or flying occurs between the card rolls, or the web formation is poor.

5. Tensile strength and elongation of nonwoven fabric: Cut-strip method of JIS L 1096 (sample width 5 cm, length 14 cm)

MD: machine direction of the nonwoven fabric, CD: longitudinal direction of the nonwoven fabric

6. Antibacterial: KS K 0693-2001

division
Workability and Physical Properties of Fiber Nonwoven Workability and Properties Radioactive The island (de) Strength (g / d) Shinto (%) Carding Antimicrobial activity Example 1 ◎ 5.0 2.75 62 ◎ 93.00% Example 2 ◎ 5.2 2.74 60 ◎ 99.90% Example 3 ○ 4.9 2.48 65 ○ 99.90% Comparative Example 1 ◎ 5.1 2.88 61 ◎ - Comparative Example 2 X 5.0 2.45 112 Badness 99.90%

7. Far infrared ray measurement: KFIA-FI-1005

This is a black body comparison using FT-IR spectrometer at 40 ℃.

8. Anion Release: KFIA-FI-1042

Test piece: 100 X 150 mm

Using a charged particle measuring device, the test was conducted under the conditions of room temperature 22 ℃, humidity 42%, and anion water 106 / cc in the air. The anion released from the measurement object was measured and displayed as 10 N number per unit volume.

division
Far Infrared Measurement Anion Release
(10 N / cc) Emissivity (5 ~ 20 ㎛,%) Radiation energy (W / ㎡ ㎛) Example 1 0.83 3.35 X 10 ² 370 Example 2 0.87 3.51 X 10 ² 387 Example 3 0.90 3.63 X 10 ² 400 Comparative Example 1 0.18 0.73 X 10 ² 5 Comparative Example 2 0.90 3.63 X 10 ² 420

As a result, the nonwoven fabric using the biodegradable short fibers containing the ocher and silver components prepared according to the method according to the embodiments of the present invention had both antimicrobial, far-infrared effects, and anion release amounts without containing ocher and silver components. Compared to their biodegradable nonwovens were confirmed.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge of.

Claims (13)

In biodegradable fiber,
90 to 98% by weight of biodegradable resin and 2 to 10% by weight of functional masterbatch,
The functional masterbatch is a functional biodegradable short fiber, characterized in that it comprises 7 to 27 parts by weight of ocher component and 0.14 to 0.21 parts by weight of silver component in 100 parts by weight of the biodegradable resin. The method of claim 1,
The biodegradable resin is a functional biodegradable short fibers, characterized in that the PLA resin is composed of 60 to 95% by weight, PBS-based resin 5 to 40% by weight. The method of claim 2,
The biodegradable resin has a melt index (MI) of 15 ~ 45g / 10min, the functional biodegradable short fibers, characterized in that the melting point is 145 to 170 ℃ measured by DSC. The method of claim 2,
The PBS-based resin is at least one selected from the group consisting of polybutylene succinate (PBS), polybutylene succinate-co-adipate (PBSA) or polybutylene succinate fumaric (PBSF), or a mixture thereof. 5. The method according to any one of claims 1 to 4,
Functional biodegradable short fibers, characterized in that the MIt value of the melt-mixed mixture of the biodegradable resin and the functional masterbatch 1 to 5. In the manufacturing method of the biodegradable fiber,
A melting step of mixing and melting 90 to 98% by weight of the biodegradable resin and 2 to 10% by weight of the functional masterbatch to form a mixture;
Spinning the mixture at a speed of 80 to 200 m / min at a temperature of 200 to 240 ° C. to produce undrawn yarn;
An extension step of stretching the undrawn yarn to a draw ratio of 1.0 to 3.0;
Crimping to impart crimp to the stretched stretched yarn;
A heat setting step of attaching and heat-setting the spinning oil to the surface of the crimped stretched yarn after applying the crimp; And
Method for producing a functional biodegradable short fibers comprising the step of forming a short fiber to cut the heat-set stretched yarn into fibers of a predetermined length. The method according to claim 6,
The biodegradable resin is a manufacturing method of functional biodegradable short fibers, characterized in that the PLA resin is composed of 60 to 95% by weight, PBS-based resin of 5 to 40% by weight. The method according to claim 6,
The functional masterbatch is a method for producing a functional biodegradable short fibers, characterized in that 100 parts by weight of biodegradable resin contains 7 to 27 parts by weight of ocher component and 0.14 to 0.21 parts by weight of silver component. The method of claim 7, wherein
The biodegradable resin has a melt index (MI) of 15 ~ 45g / 10min, the melting point measured by DSC 145 to 170 ℃ characterized in that the manufacturing method of functional biodegradable short fibers. The method of claim 7, wherein
The PBS-based resin is at least one selected from the group consisting of PBS (Polybutylene Succinate), PBSA (Polybutylene Succinate-co-adipate) or PBSF (Polybutylene succinate fumaric), or a mixture thereof. Way. The method according to claim 6,
The stretching step is a method of producing a functional biodegradable short fibers, characterized in that the stretching method in the bath stretching in the bath. The method according to claim 6,
The heat setting step is a method for producing functional biodegradable short fibers, characterized in that the hot air drying with hot air of 60 ℃ ~ 70 ℃. A functional biodegradable nonwoven fabric, which is made from a biodegradable fiber according to any one of claims 1 to 4 and a fiber produced by the method according to any one of claims 6 to 12.

Images