WO2021201632A1 - Tissu non tissé, stratifié de tissu non tissé, article et procédé de fabrication de tissu non tissé - Google Patents

Tissu non tissé, stratifié de tissu non tissé, article et procédé de fabrication de tissu non tissé Download PDF

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WO2021201632A1
WO2021201632A1 PCT/KR2021/004079 KR2021004079W WO2021201632A1 WO 2021201632 A1 WO2021201632 A1 WO 2021201632A1 KR 2021004079 W KR2021004079 W KR 2021004079W WO 2021201632 A1 WO2021201632 A1 WO 2021201632A1
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Prior art keywords
nonwoven fabric
propylene
based polymer
polymer
article
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PCT/KR2021/004079
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English (en)
Korean (ko)
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정진일
정긍식
임희석
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도레이첨단소재 주식회사
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Priority to JP2022560114A priority Critical patent/JP2023520492A/ja
Priority to CN202180033944.7A priority patent/CN115552064A/zh
Publication of WO2021201632A1 publication Critical patent/WO2021201632A1/fr

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/05—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in another pattern, e.g. zig-zag, sinusoidal
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2509/00—Medical; Hygiene
    • D10B2509/02—Bandages, dressings or absorbent pads
    • D10B2509/026—Absorbent pads; Tampons; Laundry; Towels

Definitions

  • Nonwovens, nonwoven laminates, articles, and methods of making nonwovens are disclosed. More specifically, a nonwoven fabric, a nonwoven fabric laminate, an article, and a method for manufacturing a nonwoven fabric with improved softness and bulkiness are disclosed.
  • the final physical properties of the nonwoven fabric are determined according to the web forming method and bonding method.
  • 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 that form a web by carding and bind with hot air, the bulkiness is significantly lower, so the softness is lowered. There is this.
  • One embodiment of the present invention provides a nonwoven fabric with improved softness and bulkiness.
  • 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.
  • Another embodiment of the present invention provides a method for manufacturing the nonwoven fabric.
  • One aspect of the present invention is
  • the crimped composite fiber has a cross section in the thickness direction including side A and side B,
  • the ratio (the side B/the side A) of the side A and the side B measured according to ASTM D1238 (MFR: measured temperature 230° C., load 2.16 kg) is 1.0 to 1.8,
  • the component ratio expressed as the side A/the side B (weight ratio) is 50/50 to 70/30
  • a nonwoven fabric having a ratio of the molecular weight distribution of the side A and the side B (the side B/the side A) of 0.5 to 1.5 is provided.
  • the side A includes a first propylene-based polymer
  • the side B includes a second propylene-based polymer
  • the first propylene-based polymer and the second propylene-based polymer may have different melt index and molecular weight distribution. have.
  • the side B further includes a third propylene-based polymer, the second propylene-based polymer and the third propylene-based polymer have different melt index and molecular weight distribution, respectively, and the third propylene-based polymer/the second propylene-based polymer
  • the component ratio expressed by the polymer may be 0/100 to 40/60.
  • the nonwoven fabric may have a thickness of 0.25 mm or more, and the number of crimps may be 20/10 mm or more.
  • the nonwoven fabric may have a coefficient of friction (COF) of 0.60 or less.
  • the crimped type composite fiber may be a side-by-side type or a sandwich type composite fiber.
  • the nonwoven fabric may be a spunbond nonwoven fabric.
  • 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
  • the article may be a diaper, an absorbent article, a toilet article, a support layer, a back sheet, a waistband or a top sheet.
  • Another aspect of the present invention is
  • the diffuser has a trapezoidal longitudinal cross-section, and a ratio of the uppermost width: the middle width: the lowermost width is 1:1.5 or more: provides a method of manufacturing a nonwoven fabric of 2.0 or more.
  • the manufacturing method of the nonwoven fabric may further include a step (S50) of imparting mechanical properties to the nonwoven fabric formed in the step (S40) by embossing using a heating embossing roll or heat-sealing by high-temperature ventilation.
  • the nonwoven fabric formed in the step (S50) is supplied to a post-processing facility to provide a deep emboss or corrugated shape by a processing roll to give a three-dimensional shape to the surface of the nonwoven fabric.
  • the processing roll of the post-processing facility is a 10-50 hole/inch deep embossing process through a perforation to give the nonwoven fabric a thickness of 0.3mm to 0.7mm, and 2 to 8ea
  • a three-dimensional shape can be imparted to the surface of the nonwoven fabric through corrugated processing of /inch.
  • the nonwoven fabric according to an embodiment of the present invention has a fine crimp shape and a lot of crimp expression, so it has good shape safety and excellent physical quality, and in particular, softness and bulkiness can be improved.
  • the diaper including the nonwoven fabric may not damage the wearer's skin or cause a rash.
  • FIG. 1 is a cross-sectional view of a crimped composite fiber forming a nonwoven fabric according to an embodiment of the present invention.
  • molecular weight distribution or polydispersity index refers to a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) measured by gel permeation chromatography (GPC). .
  • melting point is a value measured by differential scanning calorimetry (DSC).
  • the nonwoven fabric according to an embodiment of the present invention includes crimped composite fibers (hereinafter simply referred to as "composite fibers").
  • the ratio (the side B/the side A) of the side A and the side B measured according to ASTM D1238 (MFR: measured temperature 230°C, load 2.16 kg) is 1.0 to 1.8
  • the component ratio expressed by the side A/the side B (weight ratio) is 50/50 to 70/30
  • the ratio of the molecular weight distribution of the side A and the side B (the side B/the side A) is It may be 0.5-1.5.
  • the composite fiber has crimpability, and the nonwoven fabric composed of the composite fiber may have excellent softness and bulkiness.
  • the side A and the side B are arranged to occupy substantially respective regions within the cross-section of the composite fiber, and extend continuously along the longitudinal direction, wherein at least one of the side A and the side B comprises the composite fiber may form at least a portion of the peripheral surface continuously along the longitudinal direction of
  • the side A includes a first propylene-based polymer
  • the side B includes a second propylene-based polymer
  • the first propylene-based polymer and the second propylene-based polymer may have different melt index and molecular weight distribution. have.
  • the first propylene-based polymer and the second propylene-based polymer may each include a propylene homopolymer.
  • the first propylene-based polymer may further include 1 to 5% by weight of a nucleating agent in addition to the propylene-based polymer component, which is the main component, and thus the crystallization temperature of the first propylene-based polymer is the second propylene-based polymer. It may be higher than the crystallization temperature of
  • the nucleating agent increases the crystallization temperature of the first propylene-based polymer to differentiate the crystallization temperature of the side A from the crystallization temperature of the side B, thereby improving the thickness of the nonwoven fabric according to the expression of the crimp to improve 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, derivatives 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 melting point of the first propylene-based polymer and the melting point of the second propylene-based polymer may be in the range of 120 to 175° C. independently of each other.
  • the molecular weight distribution of the first propylene-based polymer may be 2.0 to 3.0, and the molecular weight distribution of the second propylene-based polymer may be 2.5 to 3.5.
  • the side B may further include a third propylene-based polymer, and the second propylene-based polymer and the third propylene-based polymer may have different melt index and molecular weight distribution, respectively.
  • the third propylene-based polymer may include a propylene homopolymer.
  • the melting point of the third propylene-based polymer may be in the range of 120 to 175°C.
  • the molecular weight distribution of the third propylene-based polymer may be 4.0 to 5.0.
  • component ratio expressed as the third propylene-based polymer/the second propylene-based polymer may be 0/100 to 40/60.
  • the nonwoven fabric may have an impregnation amount (OPU) of a hydrophilic agent of 0.7% or less, and accordingly, the nonwoven fabric may have a rewetability index of 5.0 or less and a water absorption durability of 10 sec or less.
  • OPU impregnation amount
  • 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).
  • Polyhydric alcohol mono-fatty acid esters such as sorbitan fatty acid ester, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate, and 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
  • Type surfactant cationic surfactant, such as a quaternary ammonium salt, an amine salt, or an amine; amphoteric surfactant,
  • 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, and 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
  • the nonionic hydrophilic agent may include a surfactant (ie, a nonionic surfactant) having a solid content of 90% by weight or more.
  • a surfactant ie, a nonionic surfactant
  • the average diameter of the composite fiber may be 1 ⁇ 50 ⁇ m.
  • the first propylene-based polymer, the second propylene-based polymer, and the third 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.
  • the nonwoven fabric including the composite fiber can be obtained by a conventional composite melt spinning method without using a special device.
  • it may be a spunbond nonwoven fabric manufactured by a spunbonding method having excellent productivity.
  • the diffuser may have a trapezoidal longitudinal cross-section, and a ratio of the uppermost width: the middle width: the lowermost width is 1:1.5 or more:2.0 or more. Due to the special configuration of the diffuser, the softness and bulkiness of the finally manufactured nonwoven fabric may be further improved.
  • the manufacturing method of the nonwoven fabric may further include a step (S50) of imparting mechanical properties to the nonwoven fabric formed in the step (S40) by embossing using a heating embossing roll or heat-sealing by high-temperature ventilation. .
  • 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 0.2 mm 2 or more, for example, 0.2 to 0.7 mm 2 .
  • 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.
  • the bonding rate and non-embossing unit area can be adjusted by changing the embossing pattern.
  • 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.
  • each embossing pattern included in the unit embossing pattern portion may have an area of 0.2 to 0.7 mm 2 .
  • the nonwoven fabric formed in the step (S50) is supplied to a post-processing facility to provide a deep emboss or corrugated shape by a processing roll, thereby providing a three-dimensional three-dimensional shape on the surface of the nonwoven fabric. It may further include the step of giving (S50).
  • the processing roll of the post-processing facility is a 10-50 hole/inch deep embossing process through a perforation to give the nonwoven fabric a thickness of 0.3 mm to 0.7 mm, and a thickness of 2 to 8 ea/inch It may be configured to give a three-dimensional three-dimensional shape to the surface of the nonwoven fabric through corrugated processing. Due to the post-processing (particularly, perforation) of the step (S50), the softness and bulkiness of the finally manufactured nonwoven fabric may be further improved.
  • the nonwoven fabric 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.
  • the composite fiber may contain other components as needed within a range that does not impair the object of the present invention.
  • the other components 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, ⁇ -(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid phenolic antioxidants such as alkylesters 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-described propylene-based polymer and the other components used as necessary may be mixed using a known method.
  • the composite fiber may be a side-by-side or sandwich type (Sandwitch) composite fiber.
  • the composite fiber 1 has a cross section in the thickness direction of a side A made of the first propylene polymer, and a side made of the second propylene polymer and/or the second propylene polymer. It may be a side-by-side type composite fiber containing B.
  • the nonwoven fabric may have a thickness of 0.25 mm or more, and the number of crimps may be 20/10 mm or more.
  • the nonwoven fabric may have a coefficient of friction (COF) of 0.60 or less.
  • the fineness and the basis weight of the nonwoven fabric may be appropriately selected according to the use, and the fineness is usually 1.0 to 2.5 denier, for example, 0.7 to 2.0 denier, and the basis weight is 15 to 100 g/m 2 , for example, It can be 7-30 g/m 2 .
  • the nonwoven fabric laminate according to an embodiment of the present invention is a laminate having 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 aforementioned nonwoven fabrics.
  • the crimped nonwoven fabric may be a spunbond nonwoven fabric
  • the nonwoven fabric laminate may be configured such that the spunbond nonwoven fabric is exposed only on one side of both surface layers.
  • the nonwoven fabric laminate may be formed by laminating the four spunbond nonwoven fabrics, and in this case, the nonwoven fabric laminate may have a uniformity (CV%) of 3% or less.
  • uniformity (CV%) refers to the percentage of the value obtained by cutting the 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 0.2 mm or more, the number of crimps is 10 pieces/10 mm or more, a bonding rate is 18% or less, and MD stiffness showing the softness of the nonwoven fabric laminate (MD stiffness) may be 50 mm or less.
  • MD stiffness refers to bending deformation in the machine direction of the nonwoven fabric laminate (that is, the degree to which the nonwoven fabric laminate is bent).
  • An article according to an embodiment of the present invention includes the above-described nonwoven laminate.
  • the article may be a diaper, an absorbent article, a toilet article, a support layer, a back sheet, a waistband or a top sheet.
  • the nonwoven fabric laminate 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.
  • OPU Oil Pick-UP
  • hydrophilic agent impregnation amount may be calculated according to Equation 1 below.
  • OPU(%) (W1-W0)/W0 X 100
  • W0 is the weight of the nonwoven fabric laminate containing no hydrophilic agent
  • W1 is the weight of the nonwoven fabric laminate containing the hydrophilic agent.
  • 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 among the hydrophilic agent.
  • the polymer for forming side A and the polymer for forming side B were melted at a temperature of 180° C. to 250° C. for each section with separate extruders to form a melt for forming side A and a melt for forming side B. Then, each of the melts was discharged through a spinneret having a compound spinning nozzle. Then, each of the discharged melt was divided into an upper region and a lower region, and the upper region was stretched by passing through a stretching region in which the volume of the lower region was 90% of the volume of the lower region. Thereafter, each of the discharged melts was discharged through a diffuser having a trapezoidal cross-sectional shape.
  • 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 processing roll.
  • the processing roll of the post-processing facility is configured to give a three-dimensional three-dimensional shape to the surface of the nonwoven fabric by deep embossing of 30 holes/inch through perforation.
  • MFR means a melt index measured under the conditions of a temperature of 230°C and a load of 2.16 kg according to ASTM D1238.
  • PA1 propylene homopolymer (LG Chem, H7700)
  • PB1 propylene homopolymer (PMC, HP562T)
  • PB2 propylene homopolymer (PMC, HP552R)
  • the types and content ratios, physical properties, diffuser dimensions (top width: middle width: bottom width) of the polymers used in Examples 1 to 9 and Comparative Examples 1 to 2, and whether perforations are shown in Table 2 below.
  • the physical properties of the side A mean the properties of the polymer (PA1)
  • the properties of the side B mean the properties of the blend of the polymer (PB1) and the polymer (PB2).
  • Example comparative example One 2 3 4 5 6 7 8 9 One 2 side A Melting point (°C) 160 160 160 160 160 160 160 160 160 160 MFR (g/10 min) 35 35 35 35 35 35 35 35 35 35 35 35 molecular weight distribution 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 side B Melting point (°C) 160 160 160 160 160 160 MFR (g/10 min) 60 53 46 42.5 53 53 53 53 53 53 53 53 53 53 molecular weight distribution 3.0 3.3 3.6 3.75 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 PB2/PB1 weight ratio 0/100 20/ 80 40/ 60 50/ 50 20/ 80 20/ 80 20/ 80 20/ 80 20/ 80 20/ 80 20/ 80 20/ 80 Side A / Side B weight ratio 60/ 40 60/ 40 60/ 40 60/ 40 50/ 50 70/ 30 60/ 40 60/ 40
  • Evaluation Example Evaluation of Physical Properties of Nonwovens The physical properties of each of the nonwoven fabrics prepared in Examples 1 to 9 and Comparative Examples 1 to 2 were evaluated in the following manner, and the results are shown in Table 3 below.
  • Weight per unit area (weight: g/m 2 ): It was measured according to ASTM D 3776-1985.
  • Tensile strength A tensile test was performed under the conditions of a width of 5 cm, an interval of 10 cm, and a tensile speed of 500 mm/min according to the KSK 0520 method using an Instron measuring equipment to obtain the maximum tensile load.
  • Thickness (mm) It was measured according to the block gauge thickness measurement method, which has a large measuring area and a minimum load.
  • Number of crimps The number of filament crimps within a range of 10 mm was directly measured using a microscope.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un tissu non tissé, un stratifié de tissu non tissé, un article et un procédé de fabrication du tissu non tissé. Le tissu non tissé de l'invention est un tissu non tissé comprenant une fibre composite crêpée, une section transversale dans la direction de l'épaisseur de la fibre composite crêpée comprenant un côté A et un côté B, un rapport (côté B/côté A) d'indices de fluidité à chaud (MFR : température de mesure de 230 °C, charge de 2,16 g), telle que mesurée conformément à la norme ASTM D1238, du côté A et du côté B est de 1,0 à 1,8, un rapport de composant représenté par côté A/côté B (rapport pondéral) est de 50/50 à 70/30, et un rapport (côté B/côté A) de la distribution de poids moléculaire du côté A et du côté B est de 0,5 à 1,5.
PCT/KR2021/004079 2020-04-02 2021-04-01 Tissu non tissé, stratifié de tissu non tissé, article et procédé de fabrication de tissu non tissé WO2021201632A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022560114A JP2023520492A (ja) 2020-04-02 2021-04-01 不織布、不織布積層体、物品、及び不織布の製造方法
CN202180033944.7A CN115552064A (zh) 2020-04-02 2021-04-01 非织造织物和其层压物、包括所述层压物的物品、以及制备所述非织造织物的方法

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KR10-2020-0040476 2020-04-02
KR1020200040476A KR102320794B1 (ko) 2020-04-02 2020-04-02 부직포, 부직포 적층체, 물품 및 부직포의 제조방법

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WO2021201632A1 true WO2021201632A1 (fr) 2021-10-07

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JP (1) JP2023520492A (fr)
KR (1) KR102320794B1 (fr)
CN (1) CN115552064A (fr)
TW (1) TWI816099B (fr)
WO (1) WO2021201632A1 (fr)

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JP2017222972A (ja) * 2016-06-14 2017-12-21 王子ホールディングス株式会社 複合繊維
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KR102036763B1 (ko) * 2018-04-17 2019-11-26 도레이첨단소재 주식회사 권축형 복합섬유의 부직포와 그의 적층체, 및 물품

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CN1489655A (zh) * 2001-01-29 2004-04-14 ������ѧ��ʽ���� 卷缩纤维无纺布及其层压体
AU2003277580A1 (en) * 2002-11-08 2004-06-07 Mitsui Chemicals, Inc. Spun bonded nonwoven fabric, laminates made by using the same, and processes for production of both
DE10360845A1 (de) * 2003-12-20 2005-07-21 Corovin Gmbh Weiches Vlies auf Basis von Polyethylen
DE102015107338A1 (de) * 2015-05-11 2016-11-17 International Automotive Components Group Gmbh Faser-Verbundmatte zur Herstellung einer Trägerplatte eines Kraftfahrzeug-Bauteils und Verfahren zu ihrer Herstellung
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JP2015523187A (ja) * 2012-08-01 2015-08-13 ザ プロクター アンド ギャンブルカンパニー より高い触覚的柔軟性特性を備えるおむつ構造
JP2017222972A (ja) * 2016-06-14 2017-12-21 王子ホールディングス株式会社 複合繊維
KR20190065411A (ko) * 2016-10-18 2019-06-11 라이펜호이저 게엠베하 운트 코. 카게 마쉬넨파브릭 섬유 플리스를 제조하는 방법 및 장치
KR102036763B1 (ko) * 2018-04-17 2019-11-26 도레이첨단소재 주식회사 권축형 복합섬유의 부직포와 그의 적층체, 및 물품
KR20190121595A (ko) * 2018-04-18 2019-10-28 도레이첨단소재 주식회사 멀칭용 스펀본드 부직포 및 그의 제조방법

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KR20210123126A (ko) 2021-10-13
TWI816099B (zh) 2023-09-21
TW202146728A (zh) 2021-12-16
KR102320794B1 (ko) 2021-11-02
CN115552064A (zh) 2022-12-30

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