Composite non-woven fabric and article comprising same

Abstract

A composite non-woven fabric and an article comprising same are disclosed. The disclosed composite non-woven fabric comprises, in this order, a first spunbond non-woven fabric, a second spunbond non-woven fabric and a third spunbond non-woven fabric, wherein each of the first spunbond non-woven fabric and the third spunbond non-woven fabric includes a core-sheath type composite fiber comprising a core part having a melt flow rate (MFR) (a measurement temperature of 230 °C and a load of 2.16 kg) measured according to ASTM D1238, of 5-25 g / 10 min, and a sheath part having an MFR (a measurement temperature of 230 °C and a load of 2.16 kg) measured according to ASTM D1238, of 40-100 g / 10 min.

Description

Composite nonwoven fabric and articles including the same

[0001] A composite nonwoven fabric and an article containing the same are disclosed. More specifically, a composite nonwoven fabric having excellent elongation and high elasticity and an article containing the same are disclosed.

[0002] Conventional spunbond nonwoven fabrics lack elasticity, so their recovery drops to 30-40% after being stretched more than once. As a result, conventional spunbond nonwoven fabrics cannot be used for waistbands in diapers or sanitary pads that require elasticity.

[0003] One embodiment of the present invention provides a composite nonwoven fabric having excellent elongation and high elasticity.

[0004] Another embodiment of the present invention provides an article comprising the composite nonwoven fabric.

[0005] One aspect of the present invention is,

[0006] The first spunbond nonwoven fabric, the second spunbond nonwoven fabric, and the third spunbond nonwoven fabric are included in this order, and

[0007] The first spunbond nonwoven fabric and the third spunbond nonwoven fabric each provide a composite nonwoven fabric comprising a core-sheath type composite fiber having a melt index (MFR: measured temperature 230℃, load 2.16 kg) of 5 to 25 g / 10 min as measured according to ASTM D1238 and a sheath having a melt index (MFR: measured temperature 230℃, load 2.16 kg) of 40 to 100 g / 10 min as measured according to ASTM D1238.

[0008] The above-mentioned core-sheath type composite fiber may have a weight ratio of core to sheath of 50:50 to 90:10.

[0009] The first spunbond nonwoven fabric and the third spunbond nonwoven fabric may each have an elongation in the MD direction of 100% or more.

[0010] The second spunbond nonwoven fabric comprises 80 to 99 parts by weight of an elastic material and 1 to 20 parts by weight of a non-elastic material, and the elastic material included in the second spunbond nonwoven fabric may be of two or more types.

[0011] The above composite nonwoven fabric may include 40 to 85 parts by weight of elastic raw material and 15 to 60 parts by weight of non-elastic raw material.

[0012] The above elastic raw material may include olefin block copolymer, styrene-based elastomer, polyolefin-based elastomer, polyester-based elastomer, styrene-ethylene-butylene-styrene (SEBS), polyurethane-based elastomer, or a combination thereof.

[0013] The above non-elastic raw material may include polyethylene, polypropylene, polyester, polyamide, or a combination thereof.

[0014] The above second spunbond nonwoven fabric may have an MD direction elongation of 220% or more.

[0015] The above composite nonwoven fabric may have a permanent deformation rate of less than 10%.

[0016] The above composite nonwoven fabric has a basic weight of 10 to 100 g / m² 2 It could be.

[0017] The above composite nonwoven fabric may have an embossing rate of 9 to 18%.

[0018] The above composite nonwoven fabric may include a plurality of the second spunbond nonwoven fabrics between the first spunbond nonwoven fabric and the third spunbond nonwoven fabric.

[0019] Another aspect of the present invention is,

[0020] An article comprising the above composite nonwoven fabric is provided.

[0021] The above article may include a waistband of a panty-type diaper or a waistband of a panty-type sanitary pad.

[0022] A composite nonwoven fabric according to one embodiment of the present invention has excellent elongation and high elasticity, so it can be used as a waistband for panty-type diapers or sanitary pads that require elasticity. In addition, an article containing the composite nonwoven fabric can provide consumers with excellent elasticity, a comfortable fit, and a soft touch.

[0023] FIG. 1 is a cross-sectional view of a composite nonwoven fabric according to a first embodiment of the present invention.

[0024] FIG. 2 is a cross-sectional view of a composite nonwoven fabric according to a second embodiment of the present invention.

[0025] Figure 3 is a diagram explaining the definition and measurement method of the term "permanent strain."

[0026] Hereinafter, a composite nonwoven fabric according to one embodiment of the present invention will be described in detail.

[0027] A composite nonwoven fabric according to one embodiment of the present invention comprises a first spunbond nonwoven fabric, a second spunbond nonwoven fabric, and a third spunbond nonwoven fabric in this order.

[0028] The first spunbond nonwoven fabric and the third spunbond nonwoven fabric may each include a core-sheath type composite fiber, a side-by-side type composite fiber, an eccentric core-sheath type composite fiber, a blended fiber, or a combination thereof.

[0029] In addition, the first spunbond nonwoven fabric and the third spunbond nonwoven fabric may each include an elastic material, a non-elastic material, or a combination thereof.

[0030] The second spunbond nonwoven fabric may include 80 to 99 parts by weight of elastic raw material and 1 to 20 parts by weight of non-elastic raw material.

[0031] In addition, the elastic raw material included in the second spunbond nonwoven fabric may be of two or more types.

[0032] The above composite nonwoven fabric may include 40 to 85 parts by weight of elastic raw material and 15 to 60 parts by weight of non-elastic raw material.

[0033] The above elastic raw material may include olefin block copolymer, styrene-based elastomer, polyolefin-based elastomer, polyester-based elastomer, styrene-ethylene-butylene-styrene (SEBS), polyurethane-based elastomer, or a combination thereof.

[0034] The above non-elastic raw material may include polyethylene, polypropylene, polyester, polyamide, or a combination thereof.

[0035] The above composite nonwoven fabric may further include a softening agent. Specifically, since the elastic material has a characteristic sticky property, it may give an unpleasant sensation to consumers. However, by changing the composition layer by layer and applying a softening agent during the manufacturing of the composite nonwoven fabric, the stickiness of the elastic material is offset, a soft sensation is felt, and a composite nonwoven fabric can be provided that allows consumers to easily stretch the fabric when using an article containing the composite nonwoven fabric.

[0036] The above softener may include erucamide-based softeners, wax emulsions, reactive softeners, silicone-based softeners, surfactants, ester compounds, ethylene bisstearamide-based softeners, ethylene-propylene random copolymers, ethylene-butene-propylene copolymers, or combinations thereof.

[0037] The above second spunbond nonwoven fabric may have an MD direction elongation of 220% or more.

[0038] A composite nonwoven fabric according to one embodiment of the present invention having the above-described configuration has the advantages of having a low permanent deformation rate, a low coefficient of friction resulting in a soft feel, and high elongation in the MD direction and tensile strength in the MD direction.

[0039] The above composite nonwoven fabric may have a permanent deformation rate of less than 10%.

[0040] In addition, the above composite nonwoven fabric has a basic weight of 10 to 100 g / m² 2 It could be.

[0041] In addition, the above composite nonwoven fabric may have an embossing rate of 9 to 18%.

[0042] In addition, the composite nonwoven fabric may include a plurality of the second spunbond nonwoven fabrics between the first spunbond nonwoven fabric and the third spunbond nonwoven fabric.

[0043] FIG. 1 is a cross-sectional view of a composite nonwoven fabric (10) according to a first embodiment of the present invention.

[0044] Referring to FIG. 1, a composite nonwoven fabric (10) according to a first embodiment of the present invention comprises a first spunbond nonwoven fabric (11), a second spunbond nonwoven fabric (12), and a third spunbond nonwoven fabric (13) in this order.

[0045] FIG. 2 is a cross-sectional view of a composite nonwoven fabric (20) according to a second embodiment of the present invention.

[0046] Referring to FIG. 2, a composite nonwoven fabric (20) according to a second embodiment of the present invention comprises a first spunbond nonwoven fabric (21), a second spunbond nonwoven fabric (22), a third spunbond nonwoven fabric (23), and a fourth spunbond nonwoven fabric (24) in this order.

[0047] The first spunbond nonwoven fabric (21) and the fourth spunbond nonwoven fabric (24) provided in the composite nonwoven fabric (20) of FIG. 2 may each have the same configuration as the first spunbond nonwoven fabric (11) and the third spunbond nonwoven fabric (13) provided in the composite nonwoven fabric (10) of FIG. 1.

[0048] In addition, the second spunbond nonwoven fabric (22) and the third spunbond nonwoven fabric (23) provided in the composite nonwoven fabric (20) of FIG. 2 may have the same configuration as the second spunbond nonwoven fabric (12) provided in the composite nonwoven fabric (10) of FIG. 1.

[0049] Hereinafter, an article including the composite nonwoven fabric described above will be described in detail.

[0050] The above article may include a waistband of a panty-type diaper or a waistband of a panty-type sanitary pad.

[0051] The present invention will be explained in more detail below through examples. These examples are intended to explain the invention more specifically, and the scope of the invention is not limited to these examples.

[0052] Example 1: Preparation of composite nonwoven fabric

[0053] A composite nonwoven fabric was manufactured comprising a first spunbond nonwoven fabric, a second spunbond nonwoven fabric, and a third spunbond nonwoven fabric in this order.

[0054] Specifically, the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each comprise a core-sheath type fiber. More specifically, the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each comprise 30 parts by weight of a core made solely of first polypropylene (PP1) (melt index: 15 g / 10 min) and 70 parts by weight of a sheath made solely of second polypropylene (PP2) (melt index: 60 g / 10 min).

[0055] In addition, the second spunbond nonwoven fabric comprises 90 parts by weight of elastic raw material and 10 parts by weight of non-elastic raw material.

[0056] In addition, the composite nonwoven fabric comprises 62 parts by weight of elastic raw material and 38 parts by weight of non-elastic raw material.

[0057] In the second spunbond nonwoven fabric above, TPO-based elastic raw material (Vistamaxx 7050) and styrene-ethylene-butylene-styrene (SEBS)-based elastic raw material (kraton MD6951) were used as elastic raw materials in a weight ratio of 95:5 (TPO: SEBS), and polypropylene (PP2) (melt index: 60 g / 10 min) was used as non-elastic raw material.

[0058] The first spunbond nonwoven fabric, the second spunbond nonwoven fabric, and the third spunbond nonwoven fabric were laminated to form a composite with a multilayer structure, and then bonded by passing it through a calender roll having an embossing ratio of 11%. As a result, a composite nonwoven fabric was obtained.

[0059] Example 2: Preparation of composite nonwoven fabric

[0060] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 30 parts by weight of a core made only of first polypropylene (PP1) (melt index: 5 g / 10 min) and 70 parts by weight of a sheath made only of second polypropylene (PP2) (melt index: 60 g / 10 min).

[0061] Example 3: Preparation of composite nonwoven fabric

[0062] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 30 parts by weight of a core made only of first polypropylene (PP1) (melt index: 25 g / 10 min) and 70 parts by weight of a sheath made only of second polypropylene (PP2) (melt index: 60 g / 10 min).

[0063] Example 4: Preparation of composite nonwoven fabric

[0064] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 30 parts by weight of a core made only of first polypropylene (PP1) (melt index: 15 g / 10 min) and 70 parts by weight of a sheath made only of second polypropylene (PP2) (melt index: 40 g / 10 min).

[0065] Example 5: Preparation of composite nonwoven fabric

[0066] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each consist of 30 parts by weight of a core made only of first polypropylene (PP1) (melt index: 15 g / 10 min) and 70 parts by weight of a sheath made only of second polypropylene (PP2) (melt index: 100 g / 10 min).

[0067] Example 6: Preparation of composite nonwoven fabric

[0068] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the second spunbond nonwoven fabric contained 80 parts by weight of elastic raw material and 20 parts by weight of non-elastic raw material.

[0069] Example 7: Preparation of composite nonwoven fabric

[0070] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the second spunbond nonwoven fabric contained 99 parts by weight of elastic raw material and 1 part by weight of non-elastic raw material.

[0071] Example 8: Preparation of composite nonwoven fabric

[0072] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained a side-by-side type composite fiber.

[0073] Example 9: Preparation of composite nonwoven fabric

[0074] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that in the manufacture of the second spunbond nonwoven fabric, a TPO-based elastic material (Vistamaxx 7050) and a styrene-ethylene-butylene-styrene (SEBS)-based elastic material (Kraton MD6951) were used as elastic raw materials in a weight ratio of 97:3 (TPO:SEBS).

[0075] Example 10: Preparation of composite nonwoven fabric

[0076] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that in the manufacture of the second spunbond nonwoven fabric, a TPO-based elastic material (Vistamaxx 7050) and a styrene-ethylene-butylene-styrene (SEBS)-based elastic material (Kraton MD6951) were used as elastic raw materials in a weight ratio of 90:10 (TPO:SEBS).

[0077] Example 11: Preparation of composite nonwoven fabric

[0078] A composite nonwoven fabric was manufactured using the same method as in Example 1, except that the manufacturing conditions were changed so that the composite nonwoven fabric contained 40 parts by weight of elastic raw material and 60 parts by weight of non-elastic raw material.

[0079] Example 12: Preparation of composite nonwoven fabric

[0080] A composite nonwoven fabric was manufactured using the same method as in Example 1, except that the manufacturing conditions were changed so that the composite nonwoven fabric contained 85 parts by weight of elastic raw material and 15 parts by weight of non-elastic raw material.

[0081] Example 13: Preparation of composite nonwoven fabric

[0082] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 50 parts by weight of a core and 50 parts by weight of a sheath.

[0083] Example 14: Preparation of composite nonwoven fabric

[0084] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 90 parts by weight of the core and 10 parts by weight of the sheath.

[0085] Comparative Example 1: Preparation of composite nonwoven fabric

[0086] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 30 parts by weight of a core made only of first polypropylene (PP1) (melt index: 3 g / 10 min) and 70 parts by weight of a sheath made only of second polypropylene (PP2) (melt index: 60 g / 10 min).

[0087] Comparative Example 2: Preparation of composite nonwoven fabric

[0088] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 30 parts by weight of a core made only of first polypropylene (PP1) (melt index: 28 g / 10 min) and 70 parts by weight of a sheath made only of second polypropylene (PP2) (melt index: 60 g / 10 min).

[0089] Comparative Example 3: Preparation of Composite Nonwoven Fabric

[0090] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 30 parts by weight of a core made only of first polypropylene (PP1) (melt index: 15 g / 10 min) and 70 parts by weight of a sheath made only of second polypropylene (PP2) (melt index: 35 g / 10 min).

[0091] Comparative Example 4: Preparation of composite nonwoven fabric

[0092] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 30 parts by weight of a core made only of first polypropylene (PP1) (melt index: 15 g / 10 min) and 70 parts by weight of a sheath made only of second polypropylene (PP2) (melt index: 105 g / 10 min).

[0093] Comparative Example 5: Preparation of composite nonwoven fabric

[0094] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the second spunbond nonwoven fabric contained 79 parts by weight of elastic raw material and 21 parts by weight of non-elastic raw material.

[0095] Comparative Example 6: Preparation of composite nonwoven fabric

[0096] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the second spunbond nonwoven fabric contained 99.5 parts by weight of elastic raw material and 0.5 parts by weight of non-elastic raw material.

[0097] Comparative Example 7: Preparation of Composite Nonwoven Fabric

[0098] A composite nonwoven fabric was manufactured using the same method as in Example 1, except that the manufacturing conditions were changed so that the composite nonwoven fabric contained 35 parts by weight of elastic raw material and 65 parts by weight of non-elastic raw material.

[0099] Comparative Example 8: Preparation of composite nonwoven fabric

[0100] A composite nonwoven fabric was manufactured using the same method as in Example 1, except that the manufacturing conditions were changed so that the composite nonwoven fabric contained 90 parts by weight of elastic raw material and 10 parts by weight of non-elastic raw material.

[0101] Comparative Example 9: Preparation of Composite Nonwoven Fabric

[0102] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 55 parts by weight of the core and 45 parts by weight of the sheath.

[0103] Comparative Example 10: Preparation of composite nonwoven fabric

[0104] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained 95 parts by weight of core and 5 parts by weight of sheath.

[0105] Comparative Example 11: Preparation of Composite Nonwoven Fabric

[0106] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that the manufacturing conditions were changed so that the first spunbond nonwoven fabric and the third spunbond nonwoven fabric each contained a single fiber composed only of polypropylene (PP2) (melt index: 60 g / 10 min).

[0107] Comparative Example 12: Preparation of Composite Nonwoven Fabric

[0108] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that only a TPO-based elastic material (Vistamaxx 7050) was used as the elastic material when manufacturing the second spunbond nonwoven fabric.

[0109] Comparative Example 13: Preparation of Composite Nonwoven Fabric

[0110] A composite nonwoven fabric was manufactured in the same manner as in Example 1, except that only a styrene-ethylene-butylene-styrene (SEBS)-based elastic material (kraton MD6951) was used as the elastic material when manufacturing the second spunbond nonwoven fabric.

[0111] The composition of the composite nonwoven fabrics prepared in the above Examples 1 to 14 (EX1 to EX14) and Comparative Examples 1 to 13 (CX1 to CX13) is shown in Table 1 below. In Table 1 below, "S / C" in the fiber type column means core-sheath type, "S / S" means side-by-side, and "M" means single fiber.

[0112] 1st and 3rd spunbond nonwoven fabrics 2nd spunbond nonwoven fabrics Composite nonwoven fabrics Fiber type Core / Sheath (parts by weight) Melt index (g / 10min) Elastic raw material / Non-elastic raw material (parts by weight) Elastic raw material Elastic raw material / Non-elastic raw material (parts by weight) TPO / SEBS (parts by weight) Core Sheath EX1S / C30 / 70156090 / 1095 / 562 / 38EX2S / C30 / 7056090 / 1095 / 562 / 38EX3S / C30 / 70256090 / 1095 / 562 / 38EX4S / C30 / 70154090 / 1095 / 562 / 38EX5S / C30 / 70151009 0 / 1095 / 562 / 38EX6S / C30 / 70156080 / 2095 / 562 / 38EX7S / C30 / 70156099 / 195 / 562 / 38EX8S / S30 / 70156090 / 1095 / 562 / 38EX9S / C30 / 7 0156090 / 1097 / 362 / 38EX10S / C30 / 70156090 / 1090 / 1062 / 38EX11S / C30 / 70156090 / 1095 / 540 / 60EX12S / C30 / 70156090 / 1095 / 585 / 15 EX13S / C50 / 50156090 / 1095 / 562 / 38EX14S / C90 / 10156090 / 1095 / 562 / 38CX1S / C30 / 7036090 / 1095 / 562 / 38CX2S / C30 / 70286090 / 109 5 / 562 / 38CX3S / C30 / 70153590 / 1095 / 562 / 38CX4S / C30 / 701510590 / 1095 / 562 / 38CX5S / C30 / 70156079 / 2195 / 562 / 38CX6S / C30 / 7015 6099.5 / 0.595 / 562 / 38CX7S / C30 / 70156090 / 1095 / 535 / 65CX8S / C30 / 70156090 / 1095 / 590 / 10CX9S / C55 / 45156090 / 1095 / 562 / 38CX1 0S / C95 / 5156090 / 1095 / 562 / 38CX11M-6090 / 1095 / 562 / 38CX12S / C30 / 70156090 / 10100 / 062 / 38CX13S / C30 / 70156090 / 100 / 10062 / 38

[0113]

[0114] Evaluation Example: Evaluation of physical properties of nonwoven fabrics Nonwoven fabrics prepared in Examples 1 to 14 and Comparative Examples 1 to 13 above (Basic weight: 35 g / m² 2 The physical properties of ) were evaluated in the following manner, and the results are shown in Table 2 below.

[0115] (1) MD direction elongation and MD direction tensile strength: Tensile tests were performed using an Instron measuring device according to the KSK 0520 method with a test specimen width of 5 cm, a spacing of 10 cm, and a tensile speed of 500 mm / min to determine the elongation at maximum elongation and the maximum tensile load.

[0116] (2) Permanent strain (%): Permanent strain was evaluated using a tensile strength elongation tester (Instron) in the manner shown in Fig. 3. Specifically, nonwoven fabric specimens were prepared by cutting the nonwoven fabrics prepared in Examples 1 to 14 and Comparative Examples 1 to 13 so that the length in the CD direction was 100 mm and the width in the MD direction was 50 mm. Subsequently, each nonwoven fabric specimen was first stretched 100% in the CD direction at a speed of 500 mm / min using a pair of jigs (i.e., the distance between the pair of jigs was widened to stretch the nonwoven fabric specimen to a length of 200 mm in the CD direction), maintained in this 100% stretched state for 30 seconds, and then the distance between the pair of jigs was narrowed to return it to its original position (i.e., after relax), followed by a recovery for 1 minute. Afterwards, the test was terminated after being secondarily stretched to 100% at a speed of 500 mm / min in the CD direction, maintained in this 100% stretched state for 1 minute, and then returned to the original position by narrowing the gap between the pair of jigs (i.e., after relaxing).

[0117] Referring to Fig. 3, the permanent strain is determined as the point where the secondary elongation strength increases. That is, in the graph of Fig. 3, since the force (i.e., tensile force) acts from the 38% point during secondary elongation, the permanent strain is recorded as 38%. The permanent strain can be measured when the elongation in the MD direction is 100% or more.

[0118] (3) Friction coefficient (μs): The friction coefficient of the nonwoven fabric was measured using TOYOSEIKI’s TR-2 according to ASTM D 1894.

[0119] (4) Radioactivity: Observed whether the nonwoven fabric broke, and if it did not break, recorded as "Good".

[0120] MD Direction Elongation (%) MD Direction Tensile Strength (N / 5cm) Permanent Strain (%) Coefficient of Friction (μs) Radioactive EX1 24 23 3.76 0.46 Good EX2 24 4 33.95 0.45 Good EX3 24 8 34.25 0.45 Good EX4 25 33 4.35 0.44 Good EX5 25 5 34.54 0.46 Good EX6 23 9 33.38 0.44 Good EX7 26 1 34.93 0.44 Good EX8 27 0 35.83 0.47 Good EX9 23 4 32.89 0.45 Good EX10 23 5 32.99 0.46 Good EX11 23 6 33.08 0.46 Good EX12 27 23 6.82 0.45 Good EX13 22 33 2.290.46 Good EX1422432.390.45 Good CX122332.1140.51 Good CX221031.6160.51 Good CX321732.0160.51 Good CX413424.9220.50 Good CX514926.7200.51 Good CX6----Unable to produce CX717130.1400.51 Good CX8----Unable to produce CX99730.3200.49 Good CX1010730.4120.51 Good CX1113931.0120.52 Good CX12----Unable to produce CX1314531.3220.51 Good

[0121]

[0122] Referring to Table 1 above, the composite nonwoven fabrics prepared in Examples 1 to 14 were found to have an elongation in the MD direction of 220% or more, an MD direction strength of 32 N / 5 cm or more, a permanent deformation of less than 10%, and excellent spinnability. On the other hand, the composite nonwoven fabrics prepared in Comparative Examples 1 to 13 were found to have an elongation in the MD direction of less than 220%, an MD direction strength of less than 32 N / 5 cm, a permanent deformation of more than 10%, poor spinnability, and / or impossible to produce.

[0123] The present invention has been described with reference to the drawings and embodiments, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

[0124] [Explanation of the symbol]

[0125] 10, 20: Composite nonwoven fabric 11~13, 21~24: Spunbond nonwoven fabric

Claims

1. A first spunbond nonwoven fabric, a second spunbond nonwoven fabric, and a third spunbond nonwoven fabric, comprising in this order, The first spunbond nonwoven fabric and the third spunbond nonwoven fabric are composite nonwoven fabrics comprising a core-sheath type composite fiber comprising a core having a melt index (MFR: measured temperature 230°C, load 2.16 kg) of 5 to 25 g / 10 min as measured according to ASTM D1238 and a sheath having a melt index (MFR: measured temperature 230°C, load 2.16 kg) of 40 to 100 g / 10 min as measured according to ASTM D1238.

2. In Paragraph 1, The above core-sheath type composite fiber is a composite nonwoven fabric in which the weight ratio of the core to the sheath is 50:50 to 90:

10.

3. In Paragraph 1, The first spunbond nonwoven fabric and the third spunbond nonwoven fabric are each composite nonwoven fabrics having an MD direction elongation of 100% or more.

4. In Paragraph 1, The above second spunbond nonwoven fabric comprises 80 to 99 parts by weight of an elastic material and 1 to 20 parts by weight of a non-elastic material, and the elastic material included in the above second spunbond nonwoven fabric is of two or more types, forming a composite nonwoven fabric.

5. In Paragraph 4, The above composite nonwoven fabric comprises 40 to 85 parts by weight of elastic raw material and 15 to 60 parts by weight of non-elastic raw material.

6. In Paragraph 4, The above elastic material is a composite nonwoven fabric comprising an olefin block copolymer, a styrene-based elastomer, a polyolefin-based elastomer, a polyester-based elastomer, styrene-ethylene-butylene-styrene (SEBS), a polyurethane-based elastomer, or a combination thereof.

7. In Paragraph 4, The above non-elastic raw material is a composite nonwoven fabric comprising polyethylene, polypropylene, polyester, polyamide, or a combination thereof.

8. In Paragraph 4, The above second spunbond nonwoven fabric is a composite nonwoven fabric having an MD direction elongation of 220% or more.

9. In Paragraph 1, Composite nonwoven fabric with a permanent deformation rate of less than 10%.

10. In Paragraph 1, Basic weight is 10~100g / m² 2 Composite nonwoven fabric.

11. In Paragraph 1, Composite nonwoven fabric with an embossing rate of 9~18%.

12. In Paragraph 1, A composite nonwoven fabric comprising a plurality of second spunbond nonwoven fabrics between the second spunbond nonwoven fabric, the first spunbond nonwoven fabric, and the third spunbond nonwoven fabric.

13. An article comprising a composite nonwoven fabric according to any one of paragraphs 1 through 12.

14. In Paragraph 13, The above article is an article comprising a waistband of a panty-type diaper or a waistband of a panty-type sanitary pad.

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