KR102374088B1 - Non-woven fabric and laminate thereof, and article including the laminate - Google Patents

Abstract

Nonwovens, nonwoven laminates and articles are disclosed. The disclosed nonwoven fabric has a sheave function value of 2.0 to 65.9% expressed by Equation 1 below:
[Equation 1]
Sieve function value (%) = (final weight of powder remaining on nonwoven fabric after sieving test)/(initial weight of powder used for sieving test) × 100.

Description

Non-woven fabric and laminate thereof, and article including the laminate

Nonwovens, nonwoven laminates and articles are disclosed. More specifically, a nonwoven fabric, a nonwoven fabric laminate, and an article having improved bulkiness and visibility are disclosed.

The final physical properties of the nonwoven fabric are determined according to the web forming method and bonding method.

In the production of the existing spunbond nonwoven fabric, the web is formed through single spinning or core-sheath composite spinning. The web thus formed has a simple structure without crimps, and is combined by a heating calender to form a thin nonwoven fabric.

Thin nonwoven fabrics are used for top and back sheets in the manufacture of diapers, but compared to short-fiber air-through nonwoven fabrics in which a web is formed by carding and bonded with hot air, the bulkiness is significantly lower and the softness is lowered. There is this.

In addition, since crimp is not given during web formation, the bulkiness is low, so the area that directly touches the skin of the baby's buttocks is large during diaper manufacturing. There is a problem that remains on the top seat and rubs the baby's buttocks or causes a rash. In addition, there is also a problem that urine leaks to the outside of the diaper.

In addition, as the luxury market for hygiene products such as diapers progresses, there is a limit to the existing spunbond nonwoven fabric in order to give differentiation points by strengthening the bulkiness and visibility aspects.

One embodiment of the present invention provides a nonwoven fabric having improved bulkiness and visibility.

Another embodiment of the present invention provides a nonwoven fabric laminate comprising two or more of the nonwoven fabric.

Another embodiment of the present invention provides an article including the nonwoven laminate.

One aspect of the present invention is

The sheave function value expressed by Equation 1 below may be 2.0 to 65.9%:

[Equation 1]

Sieve function value (%) = (final weight of powder remaining on nonwoven fabric after sieving test)/(initial weight of powder used for sieving test) × 100.

The nonwoven fabric may have a sheave function value of 2.0 to 15.7%.

In the nonwoven fabric, an average size of the holes may be 0.411 to 0.833 mm.

The nonwoven fabric may have an absorbency of 2.0 to 11.4 sec.

The nonwoven fabric may have an MD direction handle-o-meter of 3.1 to 5.1 g and a CD direction handle-o-meter from 1.0 to 2.3 g.

The nonwoven fabric may have a compressive strength of 3.4 to 6.4 cN.

Another aspect of the present invention is

A nonwoven fabric laminate having at least two or more layers, wherein at least one layer is the nonwoven fabric, is provided.

The nonwoven fabric may be a spunbond nonwoven fabric, and the nonwoven fabric laminate may be configured such that the spunbond nonwoven fabric is exposed only on one side of both surface layers.

Another aspect of the present invention is

It provides an article comprising the above-mentioned nonwoven laminate.

The article may be a diaper, absorbent article, disposable hygiene article, toilet article, side gather, support layer or top sheet.

The nonwoven fabric according to an embodiment of the present invention can provide a high-grade image by not only having excellent bulkiness but also differentiated visibility.

Hereinafter, a nonwoven fabric according to an embodiment of the present invention will be described in detail.

The nonwoven fabric according to an embodiment of the present invention may have a sheave function value of 2.0 to 65.9% expressed by Equation 1 below:

[Equation 1]

Sieve function value (%) = (final weight of powder remaining on nonwoven fabric after sieving test)/(initial weight of powder used for sieving test) × 100.

When the sieve function value is 2.0 to 65.9%, a nonwoven fabric having improved bulkiness and visibility can be obtained.

For example, the nonwoven fabric may have a sheave function value of 2.0 to 15.7%. If the sieve function value is 2.0 to 15.7%, it is possible to obtain a nonwoven fabric having improved absorbency and processability as well as bulkiness and visibility.

In the nonwoven fabric, an average size of the holes may be 0.411 to 0.833 mm.

In addition, the nonwoven fabric may have an absorbency of 2.0 to 11.4 sec.

In addition, the nonwoven fabric may have a handle-o-meter in the MD direction of 3.1 to 5.1 g and a handle-o-meter in the CD direction of 1.0 to 2.3 g.

In addition, the nonwoven fabric may have a compressive strength of 3.4 to 6.4 cN (centinewton).

The nonwoven fabric may include crimped composite fibers (hereinafter simply referred to as "composite fibers").

The composite fiber may include a first propylene-based polymer and a second propylene-based polymer.

The melting point of the second propylene-based polymer as measured by differential scanning calorimetry (DSC) may be 30° C. or higher than the melting point of the first propylene-based polymer.

The ratio of the melt index (MFR: measured temperature 230° C., load 2.16 kg) of the first propylene-based polymer and the second propylene-based polymer according to ASTM D1238 (the second propylene-based polymer/the first propylene-based polymer) ) may be greater than or equal to 1.5.

For example, the melting point of the first propylene-based polymer may be 30° C. to 60° C. or 30° C. to 100° C. higher than the melting point of the second propylene-based polymer.

For example, the ratio of the melt index (the second propylene-based polymer / the first propylene-based polymer) may be 1.7 to 2.0, 1.7 to 3.0, or 1.7 to 4.0.

The first propylene-based polymer and the second propylene-based polymer are uniformly mixed within the cross-section of the composite fiber or are arranged to occupy substantially respective regions, and are continuously elongated in the longitudinal direction, and the first propylene At least one component of the polymer-based polymer and the second propylene-based polymer may continuously form at least a portion of the peripheral surface of the composite fiber in the longitudinal direction.

The first propylene-based polymer and the second propylene-based polymer each independently contain a homopolymer of propylene or propylene as a main structural unit component, and ethylene, 1-butene, 1-pentene, 1-hexene, 1- It may be a copolymer with one or two or more of α-olefins having 2 to 20 carbon atoms, preferably 2 to 8 carbon atoms, such as octene and 4-methyl-1-pentene. For example, the first propylene-based polymer and the second propylene-based polymer each independently have an ethylene unit component content of 0 to 10 mol% and an MFR of 20 to 200 g/10 min. It may be an ethylene random copolymer.

In particular, a propylene homopolymer as the first propylene-based polymer, and a random copolymer of propylene and a small amount of ethylene as the second propylene-based polymer, in that a nonwoven fabric including composite fibers having good flexibility with excellent bulk properties can be obtained. , the content of the ethylene unit component may be 10 mol% or less, for example, 1 to 10 mol%. In addition, the content of the ethylene unit component is calculated|required according to a conventional method by 13C-NMR spectrum.

The first propylene-based polymer further comprises 1 to 5% by weight of a nucleating agent in addition to the propylene-based polymer component as a main component, and thus the crystallization temperature of the first propylene-based polymer is determined by the crystallization of the second propylene-based polymer. It can be 19°C or more higher than the temperature.

The melting point of the first propylene-based polymer may be in the range of 120 to 175°C, and the melting point of the second propylene-based polymer may be in the range of 110 to 155°C. In addition, the melting point difference of the two components may be in the range of 30°C or higher, 30°C-60°C, or 30°C-100°C, as described above.

The nonwoven fabric may include 70 to 90 parts by weight of fibers formed by spinning of the first propylene-based polymer and 10 to 30 parts by weight of fibers formed by spinning of the second propylene-based polymer.

Since the nonwoven fabric has an impregnation amount (OPU) of a hydrophilic agent of 0.7% or less, the nonwoven fabric may have a rewetability index of 5.0 or less and a water absorption durability of 10 sec or less.

The hydrophilic agent may include a wax emulsion, a reactive softening agent, a silicone-based compound, a surfactant, or a combination thereof. The silicone-based compound may include an amino group-containing silicone, an oxyalkylene group-containing silicone, or a combination thereof. The surfactant includes anionic surfactants such as carboxylate-based anionic surfactants, sulfonate-based anionic surfactants, sulfate ester salt-based anionic surfactants, and phosphate ester salt-based anionic surfactants (especially alkyl phosphate ester salts). Surfactants; Polyhydric alcohol mono-fatty acid esters, such as sorbitan fatty acid ester, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate, propylene glycol monostearate, N-(3-oleate) Iloxy-2-hydroxypropyl) diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbit beeswax, polyoxyethylene sorbitan sesquistearate, polyoxyethylene monooleate, polyoxyethylene sorbitan ses Nonionics such as quistearate, polyoxyethylene glyceryl monooleate, polyoxyethylene monostearate, polyoxyethylene monolaurate, polyoxyethylene monooleate, polyoxyethylene cetyl ether, and polyoxyethylene lauryl ether System surfactant: cationic surfactant, such as a quaternary ammonium salt, an amine salt, or an amine; amphoteric surfactants such as aliphatic derivatives of secondary or tertiary amines containing carboxy, sulfonate and sulfate, or aliphatic derivatives of heterocyclic secondary or tertiary amines; or a combination thereof.

Specifically, the hydrophilic agent may be a nonionic hydrophilic agent.

The nonionic hydrophilic agent may be a silicone-based compound such as an amino group-containing silicone or an oxyalkylene group-containing silicone; Polyhydric alcohol mono-fatty acid esters, such as sorbitan fatty acid ester, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate, propylene glycol monostearate, N-(3-oleate) Iloxy-2-hydroxypropyl) diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbit beeswax, polyoxyethylene sorbitan sesquistearate, polyoxyethylene monooleate, polyoxyethylene sorbitan ses Nonionics such as quistearate, polyoxyethylene glyceryl monooleate, polyoxyethylene monostearate, polyoxyethylene monolaurate, polyoxyethylene monooleate, polyoxyethylene cetyl ether, and polyoxyethylene lauryl ether Surfactants; or a combination thereof.

More specifically, the nonionic hydrophilic agent may include a surfactant (ie, a nonionic surfactant) having a solid content of 90% by weight or more.

The average diameter of the composite fiber may be 1 ~ 50㎛.

The first propylene-based polymer and the second propylene-based polymer may be prepared using a highly stereoregular polymerization catalyst.

The highly stereoregular polymerization catalyst may include a diester component catalyst, a succinate component catalyst, a metallocene catalyst, or a combination thereof.

In addition, by further including the nucleating agent in addition to the propylene-based polymer component in which the first propylene-based polymer is a main component, the crystallization temperature of the first propylene-based polymer is increased to differentiate it from the crystallization temperature of the second propylene-based polymer. By improving the thickness of the nonwoven fabric, the softness and bulkiness of the nonwoven fabric can be further improved.

The nucleating agent may include a granular additive, a self-assembling nucleating agent, a reactive nucleating agent, or a combination thereof. The granular additive may include sodium benzoate, titanium dioxide, silica, nano clay, sodium salt, calcium titanate, metal oxide, metal hydroxide, or a combination thereof. The self-assembly nucleating agent may include bis(p-methylbenzylidene)sorbitol, dibenzylidene sorbitol, monobenzylidene sorbitol (MBS), bis(p-methylbenzylidene)sorbitol, a derivative thereof, or a combination thereof. . The reactive nucleating agent may include a metal salt, 4-biphenyl carboxylic acid, 4-biphenylmethanol, adipic acid, or a combination thereof.

The nonwoven fabric including the composite fiber can be obtained by a conventional composite melt spinning method without using a special device. For example, it may be a spunbond nonwoven fabric manufactured by a spunbonding method having excellent productivity.

Hereinafter, a method for manufacturing a nonwoven fabric according to an embodiment of the present invention will be described in detail.

A method for manufacturing a nonwoven fabric according to an embodiment of the present invention may include the following steps:

Forming a melt by melting the first propylene-based polymer and the first propylene-based polymer at a temperature of 180° C. to 250° C. for each section with one extruder (S10);

discharging the melt through a spinneret having a single spinning nozzle (S20), and

Discharging each of the discharged melts through the diffuser (S30).

In addition, the method of manufacturing the nonwoven fabric may further include a step (S40) of imparting mechanical properties to the nonwoven fabric formed in the step (S30) by embossing using a heating embossing roll or heat-sealing by high-temperature ventilation. .

For example, the embossing process may be performed under the conditions of a bonding rate (ie, embossing area ratio) of 13% or less, and a non-embossing unit area of 0.2mm ² or more, for example, 0.2-0.7mm ² . Here, the non-embossing unit area means the maximum area of a quadrangle inscribed in the embossing in the non-embossing unit of the minimum unit surrounded by the embossing unit on all sides. If embossing is performed under the conditions within this range, a nonwoven fabric having a larger bulkiness can be obtained while maintaining the required strength of the nonwoven fabric.

The bonding rate and non-embossing unit area can be adjusted by changing the embossing pattern.

As a result of the embossing process, the nonwoven fabric may include an embossing part and a non-embossing part, and the embossing part may include a plurality of unit embossing pattern parts continuously arranged at the same or different intervals in an open embossing type.

In addition, each embossing pattern included in the unit embossing pattern portion may have an area of 0.2 to 0.7 mm ² .

In addition, the manufacturing method of the nonwoven fabric includes the steps of supplying the nonwoven fabric formed in the step (S40) to a post-processing facility and providing a three-dimensional three-dimensional shape to the surface of the nonwoven fabric by providing a deep emboss shape by a processing roll ( S50) may be further included.

In the step (S50), the processing roll of the post processing equipment may be configured to give the nonwoven fabric a thickness of 0.3 mm to 0.7 mm by deep embossing of 10 to 50 holes/inch through hole processing. Due to the post-processing of the step (S50), the softness and bulkiness of the finally manufactured nonwoven fabric may be further improved.

The nonwoven fabric of the composite fiber may further include a fatty acid amide having 5 to 25 carbon atoms in an amount of 0.01 to 3% by weight based on the total weight of the nonwoven fabric.

The fatty acid amide may serve as a slip agent.

The fatty acid amide may include oleic acid amide, erucamide, stearic acid amide, or a combination thereof.

In addition to the first propylene-based polymer and the second propylene-based polymer, the composite fiber may contain other components as needed within a range that does not impair the object of the present invention. The other ingredients may include known heat-resistant stabilizers, weather-resistance stabilizers, various stabilizers, antistatic agents, anti-blocking agents, anticlouding agents, fillers, dyes, pigments, natural oils, synthetic oils, waxes, or combinations thereof. .

The stabilizer may include antioxidants such as 2,6-di-t-butyl-4-methylphenol (BHT); tetrakis[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane, β-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid phenolic antioxidants such as alkyl esters and 2,2'-oxamidobis[ethyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate; fatty acid metal salts such as zinc stearate, calcium stearate, and calcium 1,2-hydroxystearate; polyhydric alcohol fatty acid esters such as glycerin monostearate, glycerin distearate, pentaerythritol monostearate, pentaerythritol distearate, and pentaerythritol tristearate; or a combination thereof.

The filler is silica, diatomaceous earth, alumina, titanium oxide, magnesium oxide, pumice powder, pumice ballun, aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, dolomite, calcium sulfate, potassium titanate, barium sulfate, calcium sulfite, talc, clay, mica , asbestos, calcium silicate, montmorillonite, bentonite, graphite, aluminum powder, molybdenum sulfide, or a combination thereof.

The above-mentioned propylene-based polymer and the other components used as needed may be mixed using a known method.

The composite fiber may be a composite fiber of a mono type, a core/sheath type, a side-by-side type, or a sandwich type.

Hereinafter, a nonwoven fabric laminate according to an embodiment of the present invention will be described in detail.

The nonwoven fabric laminate according to an embodiment of the present invention is a laminate having a layer configuration of at least two or more layers, and at least one of them may be the above-described nonwoven fabric.

The nonwoven fabric laminate may include a spunbond nonwoven fabric among the nonwoven fabrics described above.

For example, the nonwoven fabric of the crimped composite fiber may be a spunbond nonwoven fabric, and the nonwoven fabric laminate may be configured such that the spunbond nonwoven fabric is exposed only on one side of both surface layers.

In addition, the nonwoven fabric laminate may be formed by stacking the four spunbond nonwoven fabrics, and in this case, the nonwoven fabric laminate may have a uniformity (CV%) of 3% or less. In the present specification, "uniformity (CV%)" refers to a value obtained by cutting a nonwoven laminate to a size of 1 m ² to make 30 test pieces, and dividing the weight deviation of the 30 test pieces by the average weight of the plurality of test pieces. it means.

The nonwoven fabric laminate consisting of four spunbond nonwoven fabrics laminated has a thickness of 0.02 mm or more, the number of crimps is 10 pieces/10 mm or more, a bonding rate is 13% or less, and MD stiffness showing the softness of the nonwoven fabric laminate (MD stiffness) may be 40 mm or less. As used herein, "MD stiffness" refers to the bending deformation in the machine direction of the nonwoven fabric laminate (that is, the degree of warping of the nonwoven fabric laminate).

Hereinafter, an article according to an embodiment of the present invention will be described in detail.

An article according to an embodiment of the present invention includes the above-described nonwoven laminate.

The article may be a diaper, absorbent article, disposable hygiene article, toilet article, side gather, support layer or top sheet.

When the article is a diaper, the nonwoven fabric laminate has a hydrophilic agent impregnation amount (OPU: Oil Pick-UP) of 0.7% or less, so that when applied to the top sheet layer of the diaper, the durable absorption rate of water may be 10 sec or less.

The hydrophilic agent impregnation amount (OPU) may be calculated according to Equation 1 below.

[Equation 1]

OPU(%) = (W1-W0)/W0 X 100

In the formula, W0 is the weight of the nonwoven fabric laminate containing no hydrophilic agent, and W1 is the weight of the nonwoven fabric laminate containing the hydrophilic agent. In addition, in Equation 1, W1 is the sum of the weight of the nonwoven fabric laminate not containing the hydrophilic agent and the weight of only the solid component of the hydrophilic agent.

Hereinafter, the present invention will be described in more detail through examples. These examples are for explaining the present invention in more detail, and the scope of the present invention is not limited to these examples.

Example 1: Preparation of non-woven fabric

First, 88 parts by weight of the first propylene-based polymer and 12 parts by weight of the second propylene-based polymer were melted at a temperature of 180° C. to 250° C. for each section with one extruder to form a melt. Then, each melt was discharged through a spinneret having a single spinning nozzle. Thereafter, the discharged melt was discharged through a diffuser having a cross-sectional shape. Thereafter, mechanical properties were imparted to the formed nonwoven fabric by embossing using a hot embossing roll. Then, as a post-processing, the formed nonwoven fabric was supplied to a post-processing facility, and a three-dimensional shape was imparted to the surface of the nonwoven fabric by deep embossing by a process roll. During the post processing, the processing roll was maintained at 137°C. The processing roll of the post-processing facility includes a first roll having a plurality of pins and a second roll having a plurality of holes formed at positions corresponding to the pins of the first roll, deep embossing through hole processing It is configured to give a three-dimensional three-dimensional shape to the surface of the nonwoven fabric by (Deep Embo) processing. The first propylene-based polymer is a propylene homopolymer (LG Chem, H7700), and the second propylene-based polymer is an elastomer-based random copolymer in which ethylene is copolymerized with polypropylene (Exxon Mobile Vistamaxx 7020, ethylene unit component content: 15.0 mol%).

Example 2: Preparation of non-woven fabric

A nonwoven fabric was prepared in the same manner as in Example 1, except that during the post-processing, the processing roll was maintained at 130°C.

Example 3: Preparation of non-woven fabric

A nonwoven fabric was prepared in the same manner as in Example 1, except that during the post-processing, the processing roll was maintained at 120°C.

Example 4: Preparation of non-woven fabric

A nonwoven fabric was prepared in the same manner as in Example 1, except that during the post-processing, the processing roll was maintained at 127°C.

Comparative Example 1: Preparation of nonwoven fabric

A nonwoven fabric was prepared in the same manner as in Example 1, except that during the post-processing, the processing roll was maintained at 140°C.

Comparative Example 2: Preparation of nonwoven fabric

A nonwoven fabric was prepared in the same manner as in Example 1, except that during the post-processing, the processing roll was maintained at 100°C.

Evaluation example: evaluation of physical properties of nonwoven fabric

The physical properties of each of the nonwoven fabrics prepared in Examples 1 to 4 and Comparative Examples 1 to 2 were evaluated in the following manner, and the results are shown in Table 1 below.

(1) Sheave function value: It was measured according to the following method.

1) Prepare sample (non-woven fabric, size 175mm x 150mm)

2) Collector bottom weighing

3) Place the sample between the sieve collector and the bottom of the collector and fix it with a rubber ring.

4) Assemble the sieve collector, sample and colloector bottom (device name: AS200 Analytical Sieve Shakers, made in Germany) fixed with a rubber ring to the device.

5) Accurately measure 20g of glass bead powder (manufacturer: Mondi lembacel betheniville) with a scale and pour it on the Sieve collector. The particle size distribution of the glass bead powder is as follows:

Content of particles having a particle diameter of 0.045 to 0.060 mm = 3.1% by weight,

Content of particles having a particle diameter of 0.061 to 0.075 mm = 10.9 wt%,

Content of particles having a particle diameter of 0.076 to 0.090 mm = 14.1 wt%,

The content of particles with a particle diameter of 0.091 to 0.105 mm = 39.9%,

Content of particles with a particle diameter of 0.106 to 0.120 mm = 28.1%,

Content of particles having a particle diameter of 0.121 to 0.135 mm = 3.1% by weight, and

Content of particles having a particle diameter of 0.136 to 0.150 mm = 0.8 wt%

6) Separate the collector bottom and measure the weight (= powder + collector bottom).

7) Calculate the sheave function value according to Equation 1:

(final weight remaining on non-woven fabric)/(20g) × 100

= {20g- (Weight of collector bottom after test - Weight of collector bottom before test)} / 20g × 100

(2) Thickness (mm): It was measured according to the block gauge thickness measurement method (KSK 0506 method). The thickness of the nonwoven fabric is an indicator of bulkiness.

(3) Average size of the hole: The average size of the major axis and the minor axis was measured in mm with a magnification of 25 times with an optical microscope. The average size of the nonwoven holes is an indicator of visibility.

(4) Absorbance: Measured according to WSP 70.3.

(5) Handle-O-meter (g): Measured according to WSP 90.3. The handle-o-meter of the nonwoven is an indicator of softness.

(6) Compressive strength: measured according to JIS P 8126. The compressive strength of a nonwoven fabric is another indicator of softness.

Example comparative example One 2 3 4 One 2 Sheave function value (%) 2.0 7.5 65.9 15.7 1.5 75.2 Thickness (mm) 0.545 0.494 0.405 0.465 0.651 0.232 Average size of holes (mm) 0.706 0.669 0.423 0.632 0.883 0.364 Absorption (sec) 2.0 7.2 11.4 10.4 1.7 21.6 MD Orientation Handle-O-Meter (g) 3.1 4.1 5.1 4.6 2.4 8.4 CD Orientation Handle-O-Meter (g) 1.0 2.1 2.3 2.1 1.1 3.0 Compressive strength (cN) 3.4 4.8 6.4 5.4 2.9 7.2

In addition, the required physical properties of the non-woven fabric meeting the object of the present invention are shown in Table 2 below.

Required physical properties of non-woven fabric Thickness (mm) Average size of holes (mm) Absorption (sec) MD Orientation Handle-O-Meter (g) CD Orientation Handle-O-Meter (g) Compressive strength (cN) 0.300 to 0.600 0.4~0.8 1.8 to 16.0 3.0~6.0 0.8~2.5 3.2~6.8

Referring to Tables 1 and 2, the nonwoven fabric prepared in Examples 1 to 4 satisfies all of the required physical properties of the nonwoven fabric meeting the purpose of the present invention, whereas the nonwoven fabric prepared in Comparative Examples 1 to 2 is of the present invention. It was found that at least one of the required properties of the nonwoven fabric meeting the purpose was not satisfied.

Although the present invention has been described with reference to the embodiments, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims (10)

A nonwoven fabric having a plurality of holes formed therein, a sheave function value of 2.0 to 65.9% expressed by Equation 1 below, and an average size of the holes of 0.411 to 0.833 mm:
[Equation 1]
Sieve function value (%) = (final weight of powder remaining on nonwoven fabric after sieving test)/(initial weight of powder used for sieving test) Х 100. According to claim 1,
The nonwoven fabric having the sheave function value of 2.0 to 15.7%. delete According to claim 1,
Non-woven fabric with absorbency of 2.0 to 11.4 sec. According to claim 1,
Non-woven fabric having a handle-o-meter in the MD direction of 3.1 to 5.1 g and a handle-o-meter in the CD direction of 1.0 to 2.3 g. According to claim 1,
Non-woven fabric with a compressive strength of 3.4 to 6.4 cN. A nonwoven fabric laminate having a layer structure of at least two or more layers, wherein at least one layer is the nonwoven fabric laminate according to any one of claims 1, 2, and 4 to 6. 8. The method of claim 7,
The nonwoven fabric is a spunbond nonwoven fabric, and the nonwoven fabric laminate is configured such that the spunbond nonwoven fabric is exposed only on one side of both surface layers. An article comprising the nonwoven laminate according to claim 8 . 10. The method of claim 9,
The article is a diaper, absorbent article, disposable hygiene article, defecation article, side gather, a support layer or a top sheet.