EP3705615B1 - Tissu non tissé filé-lié - Google Patents

Tissu non tissé filé-lié Download PDF

Info

Publication number
EP3705615B1
EP3705615B1 EP18872892.7A EP18872892A EP3705615B1 EP 3705615 B1 EP3705615 B1 EP 3705615B1 EP 18872892 A EP18872892 A EP 18872892A EP 3705615 B1 EP3705615 B1 EP 3705615B1
Authority
EP
European Patent Office
Prior art keywords
nonwoven fabric
spun
fibers
acid amide
bonded nonwoven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18872892.7A
Other languages
German (de)
English (en)
Other versions
EP3705615A1 (fr
EP3705615A4 (fr
Inventor
Masanori Endo
Yohei Nakano
Ryoichi Hane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Publication of EP3705615A1 publication Critical patent/EP3705615A1/fr
Publication of EP3705615A4 publication Critical patent/EP3705615A4/fr
Application granted granted Critical
Publication of EP3705615B1 publication Critical patent/EP3705615B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
    • 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
    • D04H3/016—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness
    • 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
    • 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
    • D04H3/16—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 filaments produced in association with filament formation, e.g. immediately following extrusion
    • 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
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/02—Moisture-responsive characteristics
    • D10B2401/021—Moisture-responsive characteristics hydrophobic

Definitions

  • the present invention relates to a spun-bonded nonwoven fabric composed of polyolefin fibers, which is excellent in waterproofness and softness, and is excellent in moldability as building material applications.
  • nonwoven fabrics have been used in various applications and are expected to grow in the future.
  • the nonwoven fabrics are employed in a wide range of applications such as industrial materials, civil engineering materials, building materials, living materials, agricultural materials, sanitary materials, and medical materials.
  • a ventilation layer construction method In recent construction of buildings such as a wooden house, a ventilation layer construction method has been widely employed. In the method, a ventilation layer is provided between an outer wall material and a heat insulation material, and moisture that has penetrated into a wall body is released to the outside through the ventilation layer.
  • a spun-bonded nonwoven fabric is utilized as a house wrapping material which is a breathable-waterproof sheet having both waterproofness of preventing rainwater from infiltrating from the outside of a building and breathability of allowing moisture in the wall escape to the outside.
  • the spun-bonded nonwoven fabric is excellent in breathability because of its structure, while it has poor waterproofness. Therefore, the spun-bonded nonwoven fabric is made into a laminate with a film with excellent waterproofness to make a breathable-waterproof sheet for use as a house wrapping material.
  • the house wrapping material is fixed on a base by a binding needle (also referred to as a tucker needle or a staple) and employed in a construction work. It is thus required to have excellent durability over a long period of time, weather resistance under conditions of high temperature and low temperature, durability (hydrolysis resistance) of long term use, and excellent moldability at the time of construction.
  • a binding needle also referred to as a tucker needle or a staple
  • a house wrapping material which is a laminate of a polyester-based nonwoven fabric having a fiber diameter of 3 to 28 microns and a basis weight of 5 to 50 g/m 2 , and a film having a thickness of 7 to 60 microns made of block copolymerized polyester having a hard segment and a soft segment superposed on the nonwoven fabric, has been proposed (see Patent Literature 1). Furthermore, a spun-bonded nonwoven fabric which is configured from polyolefin fibers that have excellent spinnability even if the single fiber diameter thereof is small, and which exhibits high flexibility and high uniformity has been described (see Patent Literature 2).
  • Patent Literature 3 provides a spunbond nonwoven fabric made of a specific crystalline resin composition and particularly provides a polypropylene spunbond nonwoven fabric having a very small fiber diameter and providing an excellent feel to the touch, and a polypropylene spunbond nonwoven fabric exhibiting high softness.
  • Patent Literature 4 discloses a spunbonded non-woven made of polyolefin filaments having a titer ⁇ 1.6 dtex and which is characterized by special mechanical properties.
  • the house wrapping material in the related art is a laminate of a nonwoven fabric and a film
  • the sheet is hard and has poor moldability.
  • the hardness and the poor moldability of the sheet are due to the film, and reducing a proportion of the film to be bonded is effective, but the reduction of the film proportion is restricted in view of waterproofness.
  • an object of the present invention is, as compared with the related art, to provide a spun-bonded nonwoven fabric composed of fibers made of polyolefin, having both waterproofness and softness and excellent in workability.
  • the spun-bonded nonwoven fabric of the present invention is composed of polyolefin fibers, wherein a surface of the nonwoven fabric has an average pore diameter of 0.1 to 25 ⁇ m, and a maximum pore diameter of 50 ⁇ m or less, both measured in according with JIS K 3832 and the nonwoven fabric has water pressure resistance per unit basis weight of 7 mm H 2 O/(g/m 2 ) or more measured in according with JIS L1092:2009, wherein the fiber constituting the nonwoven fabric has an average single fiber diameter of 6.5 to 11.9 ⁇ m and a CV value of a single fiber diameter of 0.1% to 7.0% both measured as described in the specification; and wherein the fiber constituting the nonwoven fabric has an MFR of 155 to 850 g/10 min, in which the MFR is measured in accordance with ASTM D-1238 respectively under the conditions of a load of 2,160 g and a temperature of 230°C.
  • a kinetic friction coefficient between the polyolefin fibers constituting the nonwoven fabric is 0.01 to 0.3.
  • the fiber constituting the nonwoven fabric includes a fatty acid amide compound having 23 or more and 50 or less carbon atoms.
  • an addition amount of the fatty acid amide compound is 0.01% to 5.0% by mass.
  • the fatty acid amide compound is ethylene bisstearic acid amide.
  • a spun-bonded nonwoven fabric that is composed of polyolefin fibers with good spinnability and high productivity despite of their small single fiber diameter, has uniform texture, a smooth surface and excellent softness, a small pore diameter size of the nonwoven fabric, and high water resistance, can be obtained. Based on these characteristics, the spun-bonded nonwoven fabric of the present invention can be suitably utilized as a breathable-waterproof sheet application in particular.
  • the spun-bonded nonwoven fabric of the present invention is a spun-bonded nonwoven fabric composed of polyolefin fibers, in which the nonwoven fabric has an average pore diameter size of 0.1 to 25 ⁇ m, a maximum pore diameter size of 50 ⁇ m or less, and the nonwoven fabric has a water pressure resistance per unit basis weight of 7 mm H 2 O/(g/m 2 ) or more.
  • a spun-bonded nonwoven fabric having a small pore diameter on a surface of the nonwoven fabric and excellent in water resistance can be made, and a spun-bonded nonwoven fabric having the required level of waterproofness and workability for a breathable-waterproof sheet such as a house wrapping material can be made.
  • examples of a polypropylene-based resin include a propylene homopolymer or a copolymer of propylene and various ⁇ -olefins
  • examples of a polyethylene-based resin include an ethylene homopolymer or a copolymer of ethylene and various ⁇ -olefins
  • the polypropylene-based resin is particularly preferably employed in view of characteristics of spinnability and strength.
  • a proportion of the propylene homopolymer is preferably 60% by mass or more, more preferably 70% by mass or more, and even more preferably 80% by mass or more. By setting so, good spinnability is maintained and strength is improved.
  • the polyolefin-based resin to be employed in the present invention may be a mixture of two or more polyolefin-based resins.
  • a resin composition containing another olefin-based resin, a thermoplastic elastomer, etc. may also be employed.
  • a melt flow rate (may be abbreviated as MFR) of the polyolefin resin included in the spun-bonded nonwoven fabric of the present invention is preferably 155 to 850 g/10 min, more preferably 155 to 600 g/10 min, and even more preferably 155 to 400 g/10 min.
  • two or more resins having different MFR can be blended at any proportion to adjust the MFR of the polyolefin resin.
  • an MFR of the resin to be blended with the main polyolefin-based resin is preferably 10 to 1000 g/10 min, more preferably 20 to 800 g/10 min, and even more preferably 30 to 600 g/10 min.
  • resins to be used may be decomposed to adjust MFR for preventing the partial occurrence of viscosity unevenness, for making the fineness of fibers uniform, and for making fiber diameters smaller, which will be descried later.
  • a free radical agent such as a peroxide, particularly a dialkyl peroxide should not be added.
  • a composite fiber obtained by combining the polyolefin resins can also be employed.
  • a composite form of the composite fiber include composite forms such as a concentric core-sheath type, an eccentric core-sheath type, and a sea-island type.
  • the concentric core-sheath type composite form is preferred since it has an excellent spinnability and the fibers can be uniformly bonded to each other by thermal bonding because of making a low melting point component serve as a sheath component.
  • Additives in common use such as an antioxidant, weathering agent, light stabilizer, antistatic agent, antifogging agent, antiblocking agent, lubricant, nucleator, and pigment, or other polymers can be added to the polyolefin-based resin in the present invention, so long as the addition thereof does not impair the effects of the invention.
  • the polyolefin-based resin in the present invention has a melting point of preferably 80°C to 200°C, more preferably 100°C to 180°C, and even more preferably 120°C to 180°C.
  • a melting point preferably 80°C or higher, more preferably 100°C or higher, and even more preferably 120°C or higher.
  • the polyolefin fibers constituting the spun-bonded nonwoven fabric in the present invention have an average single fiber diameter of 6.5 to 11.9 ⁇ m.
  • the average single fiber diameter By setting the average single fiber diameter to 6.5 ⁇ m or more, preferably 7.5 ⁇ m or more, and more preferably 8.4 ⁇ m or more, a decrease in spinnability can be prevented and a high-quality nonwoven fabric can be stably produced.
  • the average single fiber diameter 11.9 ⁇ m or less, preferably 11.2 ⁇ m or less, and more preferably 10.6 ⁇ m or less, a spun-bonded nonwoven fabric having high uniformity in the surface of the nonwoven fabric can be made, and hence a spun-bonded nonwoven fabric with small pore diameter in the surface thereof and with excellent water resistance that can withstand practical use can be obtained.
  • the polyolefin fibers constituting the spun-bonded nonwoven fabric in the present invention have a CV value of a single fiber diameter of 0.1% to 7.0%.
  • a CV value of a single fiber diameter 0.1% to 7.0%.
  • the CV value of the single fiber diameter preferably 1.0% or more, and more preferably 2.0% or more.
  • the CV value of the single fiber diameter 7.0% or less, preferably 6.0% or less, and more preferably 5.0% or less, occurrence of a rough feeling on the surface is prevented, and a laminated nonwoven fabric having high uniformity can be obtained.
  • Back pressure of a spinneret, uniformity of yarn cooling conditions and stretching conditions mainly affect the CV value of the single fiber diameter, and the CV value can be controlled by appropriately adjusting them.
  • the polyolefin fiber constituting the spun-bonded nonwoven fabric in the present invention has a MFR of 155 to 850 g/10 min.
  • MFR 155 to 850 g/10 min.
  • the filaments being discharged can readily follow deformations, even when the filaments are drawn at a high spinning speed to increase the productivity. Stable spinning is hence possible.
  • orientation and crystallization of the fibers can be promoted to impart high mechanical strength to the polyolefin fibers.
  • the polyolefin-based fibers which are constituent fibers, composed of polyolefin resins contain a fatty acid amide compound having 23 or more and 50 or less carbon atoms.
  • the number of carbon atoms of a fatty acid amide compound incorporated into the polyolefin fibers affects the change in a moving speed of the fatty acid amide compound to the fiber surface.
  • a fatty acid amide compound By setting a fatty acid amide compound to preferably have 23 or more carbon atoms, more preferably 30 or more carbon atoms, excessive exposure of the fatty acid amide compound on the fiber surface is inhibited, excellent spinnability and working stability are attained, and high production efficiency is hence maintained.
  • the filaments are collected as a spun-bonded nonwoven fabric web, moderate slipperiness can be imparted to the fibers, and the uniformity of the nonwoven fabric surface can be attained and the pore diameter of the nonwoven fabric surface can be made smaller.
  • a fatty acid amide compound preferably have 50 or less carbon atoms, more preferably 42 or less carbon atoms, this fatty acid amide compound readily migrates to the fiber surface, making it possible to impart slipperiness between the spun-bonded nonwoven fabric fibers or slipperiness and softness of the nonwoven fabric surface.
  • Examples of the fatty acid amide compound having 23 or more and 50 or less carbon atoms included in the present invention include saturated fatty acid monoamide compounds, saturated fatty acid diamide compounds, unsaturated fatty acid monoamide compounds, and unsaturated fatty acid diamide compounds.
  • fatty acid amide compound having 23 to 50 carbon atoms include tetradocosanoic acid amide, hexadocosanoic acid amide, octadocosanoic acid amide, nervonic acid amide, tetracosapentaenoic acid amide, nisinic acid amide, ethylenebislauric acid amide, methylenebislauric acid amide, ethylene bisstearic acid amide, ethylene bishydroxystearic acid amide, ethylene bisbehenic acid amide, hexamethylene bisstearic acid amide, hexamethylene bisbehenic acid amide, hexamethylene hydroxystearic acid amide, distearyladipic acid amide, distearylsebacic acid amide, ethylene bisoleic acid amide, ethylene biserucic acid amide, and hexamethylene bisoleic acid amide. Two or more of these amide compounds may be used in combination
  • the ethylene bisstearic acid amide which is a saturated fatty acid diamide compound, among those fatty acid amide compounds.
  • Ethylene bisstearic acid amide has excellent thermal stability and is hence usable in melt spinning. With the polyolefin-based fibers into which ethylene bisstearic acid amide has been blended, when the filaments are collected as the spun-bonded nonwoven fabric web while maintaining high productivity, moderate slipperiness can be imparted to the fibers, and the uniformity of the nonwoven fabric surface can be attained and the pore diameter of the nonwoven fabric surface can be made smaller.
  • an addition amount of the fatty acid amide compound to the polyolefin fibers composed of the polyolefin-based resin, which polyolefin fibers constituting the spun-bond nonwoven fabric is preferably 0.01% to 5.0% by mass.
  • the addition amount of the fatty acid amide compound is preferably 0.01% to 5.0% by mass, more preferably 0.1% to 3.0% by mass, even more preferably 0.1% to 1.0% by mass, when the filaments are collected as the spun-bonded nonwoven fabric web while maintaining the spinnability, moderate slipperiness can be imparted to the fibers, and the uniformity of the nonwoven fabric surface is attained and the pore diameter of the nonwoven fabric surface can be made smaller.
  • addition amount herein means the proportion by mass percent of the fatty acid amide compound added to the polyolefin-based fibers constituting the spun-bonded nonwoven fabric of the invention, specifically to the whole resin constituting the polyolefin-based fibers.
  • the proportion thereof to the sum of the core and sheath ingredients is calculated.
  • a kinetic friction coefficient between the fibers constituting the spun-bonded nonwoven fabric of the present invention is preferably 0.01 to 0.3.
  • the kinetic friction coefficient By setting the kinetic friction coefficient to 0.01 or more, preferably 0.1 or more, it is possible to provide slipperiness between the fibers, and when the spun-bonded nonwoven fabric web is collected, the fibers can moderately slip, and the uniformity of the nonwoven fabric surface can be improved.
  • the kinetic friction coefficient By setting the kinetic friction coefficient to 0.3 or less, preferably 0.25 or less, the nonwoven fabric surface is not too slippery, and workability and handling properties when the spun-bonded nonwoven fabric is used as a nonwoven fabric for building materials become good.
  • the kinetic friction coefficient between spun-bonded fibers can be controlled by a polymer type, a single fiber diameter, types of lubricant to be added to the fibers and an addition amount thereof, and a fiber shape.
  • the spun-bonded nonwoven fabric of the present invention has water pressure resistance per basis weight of 7 mm H 2 O/(g/m 2 ) or more.
  • the spun-bonded nonwoven fabric alone can be applied as a breathable-waterproof sheet in applications where low waterproofness is required.
  • a proportion of the film to be bonded can be reduced, and decrease in breathability due to the film and workability deterioration due to a decrease in sheet texture can be prevented.
  • the water pressure resistance per basis weight is preferably 20 mm H 2 O/(g/m 2 ) or less.
  • the water pressure resistance per basis weight can be controlled by the single fiber diameter, the pore diameter of the nonwoven fabric surface, apparent density, and thermocompression bonding conditions (degree of press bonding, temperature, and linear pressure).
  • the surface of the spun-bonded nonwoven fabric of the present invention has a maximum pore diameter of 50 ⁇ m or less.
  • the maximum pore diameter By setting the maximum pore diameter to 50 ⁇ m or less, preferably 45 ⁇ m or less, and more preferably 40 ⁇ m or less, a decrease in water pressure resistance due to local pore opening can be prevented.
  • a lower limit of the maximum pore diameter is not particularly limited, but the maximum pore diameter is preferably 0.1 ⁇ m or more in order to prevent deterioration of workability in use as a building material application resulting from lowered softness due to high density spun-bonded nonwoven fabric.
  • the maximum pore diameter of the nonwoven fabric can be controlled by a single fiber diameter, a fiber dispersion state, a kinetic friction coefficient between single fibers, a nonwoven fabric basis weight, thermal bonding conditions (temperature, pressure), and the like.
  • the surface of the spun-bonded nonwoven fabric of the present invention has an average pore diameter of 0.1 ⁇ m to 25 ⁇ m.
  • the spun-bonded nonwoven fabric can be made moderately soft, and by setting the average pore diameter to 25 ⁇ m or less, more preferably 23 ⁇ m or less, even more preferably 21 ⁇ m or less, high water resistance can be expressed.
  • the average pore diameter of the nonwoven fabric can be controlled by a single fiber diameter, a fiber dispersion state, a kinetic friction coefficient between single fibers, a nonwoven fabric basis weight, thermal bonding conditions (temperature, pressure), and the like.
  • the spun-bonded nonwoven fabric of the present invention preferably has a basis weight of 10 to 100 g/m 2 .
  • basis weight preferably 10 g/m 2 or higher, more preferably 13 g/m 2 or higher, even more preferably 15 g/m 2 or higher, spun-bonded nonwoven fabric having mechanical strength practically usable can be obtained.
  • the basis weight preferably 100 g/m 2 or lower, more preferably 50 g/m 2 or lower, and even more preferably 30 g/m 2 or lower, when the spun-bonded nonwoven fabric is employed as a house wrapping material, the weight thereof becomes suitable for a worker to hold it in hand while carrying out the work at the time of construction, and a laminated nonwoven fabric excellent in handleability at the time of construction can be obtained.
  • the laminated nonwoven fabric has an excellent handling properties when it is used as another application.
  • the spun-bonded nonwoven fabric of the present invention preferably has a thickness of 0.05 to 1.50 mm.
  • the thickness preferably 0.05 to 1.50 mm, more preferably 0.08 to 1.00 mm, even more preferably 0.10 to 0.80 mm, softness and moderate cushioning properties are provided, and when the spun-bonded nonwoven fabric is employed as a house wrapping material, the weight thereof becomes suitable for a worker to hold it in hand while carrying out the work at the time of construction, rigidity of the nonwoven fabric is not too strong, and a laminated nonwoven fabric having excellent handleability at the time of construction can be obtained.
  • the spun-bonded nonwoven fabric of the present invention preferably has apparent density of 0.05 to 0.30 g/cm 3 .
  • apparent density By setting the apparent density to preferably 0.30 g/cm 3 or less, more preferably 0.25 g/cm 3 or less, even more preferably 0.20 g/cm 3 or less, deterioration of the softness of the spun-bonded nonwoven fabric by packing the fibers tightly can be prevented
  • apparent density by setting the apparent density to preferably 0.05 g/cm 3 or more, more preferably 0.08 g/cm 3 or more, even more preferably 0.10 g/cm 3 or more, a spun-bonded nonwoven fabric having handleability and strength or softness that can withstand practical use, while preventing occurrence of fluffing or delamination, can be obtained.
  • a stress per basis weight at 5% elongation of the spun-bonded nonwoven fabric of the present invention (hereinafter, may also be described as 5% modulus per basis weight) is preferably 0.06 to 0.33 (N/25 mm)/(g/m 2 ), more preferably 0.13 to 0.30 (N/25 mm)/(g/m 2 ), even more preferably 0.20 to 0.27 (N/25 mm)/(g/m 2 ).
  • the stress per basis weight at 5% elongation of the spun-bonded nonwoven fabric adopts a value measured by the following procedure in accordance with "6.3 Tensile Strength and Elongation Rate (ISO method)" of JIS L1913: 2010.
  • the spun-bonded nonwoven fabric of the present invention is a long fiber nonwoven fabric produced by a spun-bonding (S) method.
  • the method for producing the nonwoven fabric include a spun-bonding method, a flash spinning method, a wet method, a carding method, and an air-laid method, and the spun-bonding method is, not only excellent in productivity and mechanical strength, but also can reduce fluffing and falling of fibers which easily occur in a short fiber nonwoven fabric.
  • a plurality of spun-bonded (S) nonwoven fabric layers are laminated, such as SS, SSS, and SSSS, and hence productivity and texture uniformity are improved.
  • the method is the preferred mode.
  • a molten thermoplastic resin (polyolefin-based resin) is spun from a spinneret as long fibers, then the fibers are suctioned and stretched with compressed air by an ejector, and subsequently the fibers are collected on a moving net to obtain a nonwoven fiber web. Further, the obtained nonwoven fiber web is subjected to a heat bonding treatment to obtain a spun-bonded nonwoven fabric.
  • the spinneret and ejector can have various shapes including round and rectangular shapes.
  • a rectangular spinneret and a rectangular ejector are preferably used in combination, because the amount of compressed air to be used is relatively small and an energy cost is excellent, the filaments are less likely to suffer fusion bonding to each other or abrasion therebetween, and filament spread is easy.
  • the polyolefin-based resin is melted in an extruder, metered and supplied to a spinneret, and ejected as long fibers.
  • a spinning temperature in melting and spinning a polyolefin-based resin is preferably 200°C to 270°C, more preferably 210°C to 260°C, even more preferably 220°C to 250°C.
  • the back pressure of the spinneret is preferably 0.1 to 6.0 MPa.
  • the back pressure of the spinneret can be adjusted by a discharge pore diameter, a discharge pore depth, and the spinning temperature of the spinneret, and among them, the discharge pore diameter has a large effect.
  • the ejected long-fiber filaments are then cooled.
  • methods for cooling the ejected filaments include a method in which cold air is forcedly blown against the filaments, a method in which the filaments are allowed to be cooled naturally at the temperature of the atmosphere around the filaments, and a method in which the distance between the spinneret and the ejector is controlled. Two or more of these methods can be used in combination. Cooling conditions may be suitably adjusted while taking into account of the ejection rate per single hole of the spinneret, spinning temperature, atmosphere temperature, etc.
  • wind speed variation when measuring 10 points at equal intervals in the width direction in the area to be blown out should be 25% or less.
  • the filaments which have been cooled and solidified are drawn and stretched by the compressed air jetted from the ejector.
  • the spinning speed is preferably 3,500 to 6,500 m/min, more preferably 4,000 to 6,500 m/min, even more preferably 4,500 to 6,500 m/min.
  • the spinnability usually becomes worse as the spinning speed increases, making it impossible to stably produce filaments.
  • the desired polyolefin fibers can be stably spun by using the polyolefin-based resin having an MFR within a specific range.
  • the long fibers obtained are collected on a moving net to form a nonwoven fiber web.
  • the filaments come out of the ejector are ejected at a high speed since the filaments are stretched at the high spinning speed.
  • the filaments so ejected at the high speed are spread under control and are collected in a net.
  • a spun-bonded nonwoven fabric having less fiber entanglement and high uniformity can be hence obtained.
  • Examples of a method for spreading the filaments ejected from the ejector under control include: a method in which a flat plate is installed at an angle between the ejector and the net to guide the filaments; a method in which a plurality of grooves having different angles are provided on the flat plate, so that the filaments falling along the flat plate and the filaments falling along the grooves are separated and dispersed in a nonwoven fiber web flow direction to spread the filaments; and a method in which a plurality of flat plates with different angles are arranged in a comb-tooth shape at an outlet of the ejector and the filaments are dropped along each flat plate to be dispersed and spread in the nonwoven fiber web flow direction.
  • the method in which the plurality of flat plates with different angles are arranged in a comb-tooth shape at the outlet of the ejector and the filaments are dropped along the flat plates respectively is a preferred mode, since the filaments having a thin fiber diameter are efficiently dispersed in the nonwoven fiber web flow direction and can be spread under control without slowing down as much as possible.
  • a thermal flat roll is brought into contact with the nonwoven fiber web from one side on the net for temporary bonding.
  • a surface layer of the nonwoven fiber web can be prevented from being turned over or blown when being conveyed on the net to prevent the texture from being deteriorated, and thus conveying performance can be improved from the collection of the filaments to the thermocompression bonding.
  • the nonwoven fiber web obtained is subsequently integrated by heat bonding, and the desired spun-bonded nonwoven fabric can be obtained.
  • Examples of methods for integrating the nonwoven fiber web by heat bonding include methods of heat bonding with various rolls such as: hot embossing rolls which are a pair of rolls, upper and lower, that have an engraved surface (have recesses and protrusions on the surface) respectively; hot embossing rolls which include a combination of a roll having a flat (smooth) surface and a roll which has an engraved surface (has recesses and protrusions on the surface); and hot calendar rolls which include a pair of flat (smooth) rolls, upper and lower; and ultrasonic bonding of heat welding by ultrasonic vibration of a horn.
  • the hot embossing rolls which are the pair of rolls, upper and lower, that have the engraved surface (have recesses and protrusions on the surface) respectively or the hot embossing rolls which include the combination of the roll having the flat (smooth) surface and the roll which has the engraved surface (has recesses and protrusions on the surface) are used, so as to attain excellent production efficiency, and partially impart strength to heat-bonded portions while texture and touch which are unique to nonwoven fabrics can be maintained in non-bonded portions.
  • a metal roll and a metal roll are paired as surface materials of the hot embossing rolls, so as to obtain a sufficient thermocompression bonding effect and to prevent the engraved surface (recesses and protrusions) of one embossing roll from being transferred to a surface of the other roll.
  • a proportion of an embossed bonding area by such hot embossing rolls is preferably 5% to 30%.
  • the proportion of the bonding area By setting the proportion of the bonding area to preferably 5% or higher, more preferably 8% or higher, even more preferably 10% or higher, strength which renders the spun-bonded nonwoven fabric practically usable can be obtained. Meanwhile, by setting the proportion of the bonding area to preferably 30% or less, more preferably 25% or less, even more preferably 20% or less, moderate softness and handling properties, suitable for use in especially an application of building materials can be obtained. Even when the ultrasonic bonding is used, the proportion of the bonding area should be preferably in the same range.
  • portion of bonding area herein means a proportion of bonded portions to the whole spun-bonded nonwoven fabric.
  • heat bonding with a roll having recesses and protrusions and a flat roll that term means the proportion of those portions (bonded portions) of the nonwoven fiber web at which protrusions of the roll having recesses and protrusions have come into contact to the whole spun-bonded nonwoven fabric.
  • ultrasonic bonding the term means a proportion of portions (bonded portions) which are heat welded by ultrasonic machining to the whole spun-bonded nonwoven fabric.
  • the shape of the bonding portions formed by the hot embossing rolls and ultrasonic bonding can be any of circular, elliptic, square, rectangular, parallelogrammic, rhombic, regularly hexagonal, and regularly octagonal shapes and the like. It is preferable that the bonded portions are uniformly present at constant intervals in the longitudinal direction (conveyance direction) and the transverse direction of the spun-bonded nonwoven fabric. This makes it possible to reduce variation in strength of the spun-bonded nonwoven fabric.
  • the hot embossing rolls have a surface temperature during heat bonding of -50°C to -15°C with respect to the melting point of the polyolefin-based resin being used.
  • the surface temperature of the hot rolls By setting the surface temperature of the hot rolls to a temperature of preferably -50°C or higher, more preferably -45°C or higher with respect to the melting point of the polyolefin-based resin, moderate heat-bonding is rendered and the spun-bonded nonwoven fabric with practically usable strength can be obtained.
  • the surface temperature of the hot embossing rolls By setting the surface temperature of the hot embossing rolls to a temperature of preferably -15°C or lower more preferably -20°C or lower with respect to the melting point of the polyolefin-based resin, excessive heat bonding can be inhibited, and moderate softness and workability can be obtained as the spun-bonded nonwoven fabric for building materials.
  • the linear pressure of the hot embossing rolls during the heat bonding is preferably 50 to 500 N/cm.
  • the linear pressure of the rolls is preferably 50 N/cm or higher, more preferably 100 N/cm or higher, even more preferably 150 N/cm or higher, moderate heat-bonding is rendered and the spun-bonded nonwoven fabric with practically usable strength can be obtained.
  • the linear pressure of the hot embossing rolls is preferably 500 N/cm or less, more preferably 400 N/cm or less, even more preferably 300 N/cm or less, moderate softness and workability can be obtained as the spun-bonded nonwoven fabric for building materials.
  • thermocompression bonding can be performed by a hot calendar roll including a pair of upper and lower flat rolls before and/or after heat bonding by the hot embossing rolls.
  • the pair of upper and lower flat rolls means a metal roll or an elastic roll having no recess or protrusion on a surface of the roll, a metal roll and a metal roll can be paired or a metal roll and an elastic roll can be paired for use.
  • the term "elastic roll” herein refers to a roll made of a material having elasticity as compared with the metal roll.
  • the elastic roll examples include so-called paper rolls such as paper, cotton, and aramid paper, or resin rolls made of urethane-based resins, epoxy-based resins, silicon-based resins, polyester-based resins, hard rubber, and a mixture thereof.
  • the spun-bonded nonwoven fabric of the present invention has high productivity, uniform texture, a smooth surface, excellent softness, and high water resistance, and therefore can be suitably used as a nonwoven fabric for house wrapping for which breathability and waterproofness are required as an application of building materials.
  • Melt flow rates of a polyolefin-based resin and fibers were measured in accordance with ASTM D-1238 respectively under the conditions of a load of 2,160 g and a temperature of 230°C.
  • Spun filaments were drawn and stretched by an ejector and collected on a net to obtain a nonwoven fiber web.
  • Ten small sample pieces were randomly collected from the nonwoven fiber web, the surface of each sample was photographed with a microscope at a magnification of 500 to 1,000 diameters.
  • Ten fibers were selected from each sample, and the hundred fibers in total were examined for fiber width. From the average value, the average single fiber diameter ( ⁇ m) was calculated.
  • a CV value of the single fiber diameter was calculated based on the following equation from a standard deviation and the average single fiber diameter of the single fiber diameter obtained from the 100 fibers examined in the above (2).
  • ⁇ CV value % of single fiber diameter standard deviation / average value ⁇ 00
  • the mass per length of 10,000 m was calculated from the average single fiber diameter and the solid density of the polyolefin-based resin used, and the calculated value was rounded off to the first decimal place to obtain the average single-fiber fineness (dtex).
  • the friction coefficient between the fibers constituting the spun-bonded nonwoven fabric was measured in accordance with JIS L1015: 2010.
  • the fibers were collected from the spun-bonded nonwoven fabric, the fibers were wound in a cylinder having an outer diameter of 8 mm of a radar type friction coefficient tester so that the fibers were parallel to the axis of the cylinder.
  • Initial loads were put in both ends of the fibers, and the fibers were hanged in the center of the cylindrical sliver, and one end thereof is connected to a torsion balance hook.
  • the cylindrical sliver was rotated at a circumferential speed of 90 cm/min, a load at which both ends of the fibers were balanced by the torsion balance was determined, and the kinetic friction coefficient was calculated by the following equation.
  • the kinetic friction coefficients were measured and an average thereof was determined as the kinetic friction coefficient.
  • ⁇ Kinetic friction coefficient ⁇ d 0.733 log W / W ⁇ m
  • thicknesses (mm) at 10 points per meter of the spun-bonded nonwoven fabric were measured in an unit of 0.01 mm at equal intervals in the width direction of the nonwoven fabric at a load of 10 kPa by using a pressure element having a diameter of 10 mm, and an average value thereof was rounded off to two decimal places.
  • the apparent density (g/cm 3 ) of the spun-bonded nonwoven fabric was calculated based on the following equation from the basis weight and the thickness before the rounding off, and rounded off to two decimal places.
  • Apparent density g / cm 3 basis weight g / m 2 / thickness mm ⁇ 10 ⁇ 3
  • the water pressure resistance of the spun-bonded nonwoven fabric was measured in accordance with "7.1.1 A method (low water pressure method)" in JIS L1092: 2009. Five test pieces of width of 150 mm ⁇ 150 mm were collected at equal intervals in the width direction of the spun-bonded nonwoven fabric, the test pieces were set to a clamp (with a contact area of water to the test pieces of 100 cm 2 ) by using an FX-3000-IV water pressure resistant tester "hydro-tester” manufactured by Textest Co., Switzerland, a water level was raised at a rate of 600 mm/min ⁇ 30 mm/min in a leveling instrument with water, water was transmitted through the test pieces, and the water level when water droplets were generated at three places on the back side was measured in a unit of mm.
  • the measurement was performed with five test pieces, and an average value thereof was set as the water pressure resistance (mm H 2 O).
  • the water pressure resistance thus determined was divided by the basis weight before the rounding off based on the following formula, and water pressure resistance per unit basis weight (mm H 2 O/(g/m 2 )) was determined by being rounded off to one decimal place.
  • Water pressure resistance per unit basis weight mm H 2 O / g / m 2 Water pressureresistance mm H 2 O / basis weight g / m 2
  • the maximum pore diameter and the average pore diameter were evaluated in accordance with JIS K 3832 (bubble point method) by a porous material automatic fine pore measurement system "Capillary Flow Porometer CPF-1500 AEXLC".
  • a measurement sample has a diameter of 25 mm, and fine pore diameter distribution measurement was performed using Galwick (surface tension: 16 mN/m) as a measurement liquid having a known surface tension. Air pressure was applied to the nonwoven fabric completely immersed in the measurement liquid, and the maximum pore diameter was calculated from pressure (bubble point) when an appearance of air bubbles was observed. An average value of the pore diameter was calculated from the pore diameter distribution obtained from the measurement. In the measurement, any five places per sample were sampled, and a value determined by rounding off to the first decimal place of the average, and the value with the first decimal place was used.
  • the softness was scored based on the following criteria. The softness was scored by 10 persons and an average thereof was evaluated as the sense of touch of the nonwoven fabric. The higher the score is, the better the softness is, and thus workability in various works was determined to be good, and the softness of 4.0 points or higher was taken as pass.
  • a polypropylene resin made of a homopolymer having a melt flow rate (MFR) of 200 g/10 min was melted with an extruder and discharged from a rectangular spinneret having a spinning temperature of 235°C, a hole diameter ⁇ of 0.30 mm, and a hole depth of 2 mm at a single-hole discharge rate of 0.32 g/min.
  • the resultant filaments were cooled and solidified by blowing cold air with 13% variation in wind speed, subsequently drawn and stretched by compressed air jetted from a rectangular ejector at an ejector pressure of 0.35 MPa.
  • a fiber spreading device in which a flat plate having a width of 2 cm and a length of 10 cm facing right downward and a flat plate having a width of 2 cm and a length of 10 cm inclined 10° to 30° on an upstream side of the sheet flow direction were alternately arranged in a comb-tooth shape at an ejector outlet was provided.
  • the filaments were dispersed and spread in the sheet flow direction along the flat plates, and collected on a moving net.
  • a nonwoven fiber web composed of long polypropylene fibers was thus obtained.
  • the long polypropylene fibers obtained had the following properties.
  • the average single fiber diameter was 10.1 ⁇ m, and the spinning speed calculated therefrom was 4,400 m/min. With respect to spinnability, no filament breakage occurred during 1-hour spinning, and the fibber had good spinnability.
  • a pair of embossing rolls composed of an upper roll, which was a metallic embossing roll having polka dots formed by engraving and having a proportion of bonding area of 16%, and a lower roll, which was a metallic flat roll, was used to heat-bond the obtained nonwoven fiber web at a linear pressure of 300 N/cm and a heat-bonding temperature of 130°C, and a spun-bonded nonwoven fabric having a basis weight of 30 g/m 2 was obtained.
  • the obtained spun-bonded nonwoven fabric was evaluated by measuring the thickness, the apparent density, the maximum pore size, the average pore size, the kinetic friction coefficient between the fibers, the MFR of the fibers, and the water pressure resistance per unit basis weight. The results thereof are shown in Table 1.
  • a nonwoven fabric composed of long polypropylene fibers was obtained by the same method as in Example 1, except that the single-hole discharge rate was changed to 0.21 g/min, and the ejector pressure was changed to 0.50 MPa.
  • the spun-bonded long fibers obtained had the following properties.
  • the average single fiber diameter was 7.2 ⁇ m, and the spinning speed calculated therefrom was 5,700 m/min. With respect to spinnability, no filament breakage occurred during 1-hour spinning, and the fiber had good spinnability. The results thereof are shown in Table 1.
  • a nonwoven fabric composed of long polypropylene fibers was obtained by the same method as in Example 1, except that the ejector pressure was changed to 0.50 MPa.
  • the spun-bonded long fibers obtained had the following properties.
  • the average single fiber diameter was 8.9 ⁇ m, and the spinning speed calculated therefrom was 5,600 m/min. With respect to spinnability, no filament breakage occurred during 1-hour spinning, and the fiber had good spinnability. The results thereof are shown in Table 1.
  • a spun-bonded nonwoven fabric was obtained by the same method as in Example 1, except that 1.0% by mass ethylene bisstearic acid amide was added as a fatty acid amide compound to the polypropylene resin composed of a homopolymer. The results thereof are shown in Table 1.
  • a spun-bonded nonwoven fabric was obtained by the same method as in Example 2, except that 1.0% by mass ethylene bisstearic acid amide was added as a fatty acid amide compound to the polypropylene resin composed of a homopolymer. The results thereof are shown in Table 1.
  • a spun-bonded nonwoven fabric was obtained by the same method as in Example 3, except that 1.0% by mass ethylene bisstearic acid amide was added as a fatty acid amide compound to the polypropylene resin composed of a homopolymer. Results are shown in Table 2.
  • a spun-bonded nonwoven fabric composed of long polypropylene fibers was obtained by the same method as in Example 1, except that 1.0% by mass of ethylene bisstearic acid amide was added as a fatty acid amide compound to the polypropylene resin composed of a homopolymer having an MFR of 60 g/10 min, and an ejector pressure was 0.20 MPa.
  • the spun-bonded long fibers obtained had the following properties. The average single fiber diameter was 11.8 ⁇ m, and the spinning speed calculated therefrom was 3,200 m/min. With respect to spinnability, no filament breakage occurred during 1-hour spinning, and the fiber had good spinnability. Results are shown in Table 2.
  • a spun-bonded nonwoven fabric was obtained by the same method as in Reference Example 1, except that 1.0% by mass ethylene bisstearic acid amide was not added as a fatty acid amide compound. Results are shown in Table 2.
  • a spun-bonded nonwoven fabric was obtained by the same method as in Comparative Example 1, except that the ejector pressure was changed to 0.15 MPa by using the polypropylene resin composed of a homopolymer having an MFR of 35 g/10 min. Results are shown in Table 2.
  • the spun-bonded nonwoven fabrics of Examples 1 to 7 had the average single fiber diameter of 6.5 to 11.9 ⁇ m, the average pore diameter of the nonwoven fabric surface of 0.1 to 25 ⁇ m since the single fiber CV was small and uniform. And they had the maximum pore diameter of 50 ⁇ m or less, so that they had the water pressure resistance per unit basis weight of 7 mm H 2 O/(g/m 2 ) or more of excellent water resistance., And the also had excellent softness and moldability. Particularly, in Examples 4 to 6 in which ethylene bis-stearic acid amide was added, because of a small friction coefficient between fibers, moderate slipperiness at the time of collecting the fiber web was given.
  • the average pore diameter on the nonwoven fabric surface was 0.1 to 25 ⁇ m, and the maximum pore diameter was 50 ⁇ m or less, so that the nonwoven fabrics had excellent water pressure resistance per unit basis weight.
  • These nonwoven fabrics were suitable for use as a nonwoven fabric for building materials such as a nonwoven fabric for house wrapping materials which are required to have breathability and waterproofness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Nonwoven Fabrics (AREA)

Claims (5)

  1. Tissu non tissé filé-lié composé de fibres de polyoléfine, dans lequel une surface du tissu non tissé a un diamètre de pore moyen de 0,1 à 25 µm, et un diamètre de pore maximum de 50 µm ou moins, tous deux mesurés conformément à JIS K 3832 et le tissu non tissé a une résistance à la pression d'eau par unité de poids de base de 7 mm H2O/(g/m2) ou plus, mesurée conformément à JIS L1092:2009,
    dans lequel la fibre constituant le tissu non tissé a un diamètre moyen de fibre individuelle 6,5 à 11,9 µm et une valeur CV d'un diamètre de fibre individuelle de 0,1 % à 7,0 %, tous deux mesurés comme décrit dans la description ; et
    dans lequel la fibre constituant le tissu non tissé a un MFR de 155 à 850 g/10 min, le MFR étant mesuré conformément à la norme ASTM D-1238, à chaque fois dans les conditions d'une charge de 2 160 g et d'une température de 230 °C.
  2. Tissu non tissé filé-lié selon la revendication 1, dans lequel un coefficient de frottement cinétique entre les fibres constituant le tissu non-tissé, mesuré conformément à la norme JIS L1015:2010, est compris entre 0,01 et 0,3.
  3. Tissu non tissé filé-lié selon la revendication 1 ou 2, dans lequel la fibre constituant le tissu non-tissé comprend un composé amide d'acide gras ayant 23 atomes de carbone ou plus et 50 atomes de carbone ou moins.
  4. Tissu non tissé filé-lié selon la revendication 3, dans lequel une quantité d'addition du composé amide d'acide gras est de 0,01 % à 5,0 % en masse.
  5. Tissu non tissé filé-lié selon la revendication 3 ou 4, dans lequel le composé amide d'acide gras est l'amide d'acide d'éthylène bis-stéaramide.
EP18872892.7A 2017-11-01 2018-10-30 Tissu non tissé filé-lié Active EP3705615B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2017211607 2017-11-01
JP2018141052 2018-07-27
PCT/JP2018/040408 WO2019088135A1 (fr) 2017-11-01 2018-10-30 Tissu non tissé filé-lié

Publications (3)

Publication Number Publication Date
EP3705615A1 EP3705615A1 (fr) 2020-09-09
EP3705615A4 EP3705615A4 (fr) 2021-04-28
EP3705615B1 true EP3705615B1 (fr) 2023-09-27

Family

ID=66331887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18872892.7A Active EP3705615B1 (fr) 2017-11-01 2018-10-30 Tissu non tissé filé-lié

Country Status (8)

Country Link
US (1) US20200255994A1 (fr)
EP (1) EP3705615B1 (fr)
JP (1) JP7276126B2 (fr)
KR (1) KR102455776B1 (fr)
CN (1) CN111295471A (fr)
SG (1) SG11202003951PA (fr)
TW (1) TWI799461B (fr)
WO (1) WO2019088135A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019167851A1 (fr) * 2018-02-28 2019-09-06 東レ株式会社 Non tissé filé-lié
CA3151083C (fr) * 2019-08-13 2023-01-24 3M Innovative Properties Company Bande de filtration d'air filee-liee
CN113329803B (zh) * 2019-12-30 2022-03-25 前沿新材料研究院（深圳）有限公司 湿法无纺布，其制备方法以及包含其的水处理膜
JP7413803B2 (ja) * 2020-01-31 2024-01-16 王子ホールディングス株式会社 不織布の製造装置

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06264572A (ja) * 1993-03-15 1994-09-20 Showa Denko Kk 屋根下葺材
US5672415A (en) * 1995-11-30 1997-09-30 Kimberly-Clark Worldwide, Inc. Low density microfiber nonwoven fabric
JPH1136168A (ja) * 1997-05-15 1999-02-09 Polymer Processing Res Inst 衛生材料およびメディカル用不織布
US6355333B1 (en) * 1997-12-09 2002-03-12 E. I. Du Pont De Nemours And Company Construction membrane
WO2001053585A1 (fr) * 2000-01-19 2001-07-26 Mitsui Chemicals, Inc. Textile non tisse file-lie et stratifie
JP2001226865A (ja) * 2000-02-10 2001-08-21 Idemitsu Unitech Co Ltd 不織布、その製造方法および衛生材料
AU2001264259A1 (en) * 2000-06-13 2001-12-24 Idemitsu Unitech Co., Ltd. Spunbonded nonwoven fabric and absorbent article
JP2002030581A (ja) * 2000-07-19 2002-01-31 Kuraray Co Ltd ハウスラップ用または屋根下地用の積層シート
US7666805B1 (en) 2001-02-07 2010-02-23 Fumin Lu Spunbond fabrics and laminates from ultra low viscosity resins
JP3656837B2 (ja) 2001-08-06 2005-06-08 東洋紡績株式会社 ハウスラップ材及びその製造方法
JP2004027440A (ja) * 2002-06-27 2004-01-29 Unitika Ltd 簡易合羽
JP2004345327A (ja) * 2003-05-26 2004-12-09 Idemitsu Unitech Co Ltd 積層体
MY146004A (en) * 2006-02-06 2012-06-15 Mitsui Chemicals Inc Spunbonded nonwoven fabric
JP5272315B2 (ja) * 2006-03-22 2013-08-28 東レ株式会社 不織布および該不織布からなる下敷き材
DE102006020488B4 (de) * 2006-04-28 2017-03-23 Fitesa Germany Gmbh Vliesstoff, Verfahren zu dessen Herstellung und dessen Verwendung
BRPI0711223A2 (pt) 2006-05-25 2011-08-23 Dow Global Technologies Inc pano não-tecido spudbond e método para melhorar a maciez de panos não- tecidos spunbond
DE102006044496A1 (de) * 2006-09-21 2008-04-17 Fiberweb Corovin Gmbh Leichtgewichtiges Spinnvlies mit besonderen mechanischen Eigenschaften
US7943701B2 (en) 2007-01-26 2011-05-17 Exxonmobil Chemical Patents Inc. Fibers and non-wovens prepared with propylene-based elastomers
JP5239466B2 (ja) 2008-04-07 2013-07-17 東レ株式会社 フィルター用不織布およびそれを用いたフィルター
JP5722222B2 (ja) * 2009-09-14 2015-05-20 出光興産株式会社 スパンボンド不織布および繊維製品
JP5618045B2 (ja) 2009-12-07 2014-11-05 ユニチカ株式会社 生分解性不織布
JP5878309B2 (ja) 2011-06-23 2016-03-08 花王株式会社 不織布の製造方法
CN105518198B (zh) * 2013-07-15 2019-03-29 希尔斯股份有限公司 具有蓬松、有弹性以及高强度中至少一个特性的纺成织物
CN106661792B (zh) * 2014-07-03 2019-06-21 出光兴产株式会社 纺粘无纺布及其制造方法
JP6581541B2 (ja) 2016-05-27 2019-09-25 日本電信電話株式会社 光変調器
RU2719524C1 (ru) 2016-08-23 2020-04-21 Одзи Холдингз Корпорейшн Фильерный нетканый материал, лист и впитывающее изделие
KR102281509B1 (ko) * 2017-01-27 2021-07-26 도레이 카부시키가이샤 스펀본드 부직포
JP6832193B2 (ja) 2017-02-27 2021-02-24 京セラ株式会社 樹脂組成物および樹脂封止型半導体装置

Also Published As

Publication number Publication date
TWI799461B (zh) 2023-04-21
JP7276126B2 (ja) 2023-05-18
EP3705615A1 (fr) 2020-09-09
TW201923190A (zh) 2019-06-16
KR20200070271A (ko) 2020-06-17
KR102455776B1 (ko) 2022-10-18
CN111295471A (zh) 2020-06-16
EP3705615A4 (fr) 2021-04-28
JPWO2019088135A1 (ja) 2020-09-24
US20200255994A1 (en) 2020-08-13
WO2019088135A1 (fr) 2019-05-09
SG11202003951PA (en) 2020-05-28

Similar Documents

Publication Publication Date Title
EP3705615B1 (fr) Tissu non tissé filé-lié
US9693912B2 (en) Spunbonded nonwoven fabrics
MX2015005397A (es) Articulo(s) con trama no tejida suave.
EP3575467B1 (fr) Tissu non tissé filé-lié
JP6390612B2 (ja) 混繊不織布およびその製造方法
WO2019167851A1 (fr) Non tissé filé-lié
KR102490535B1 (ko) 적층 부직포
JP7173021B2 (ja) 積層不織布およびその製造方法
JP7247884B2 (ja) スパンボンド不織布
TW201910575A (zh) 捲曲纖維、紡絲黏合不織布、及其等之製造方法
JP7040122B2 (ja) スパンボンド不織布
JP7172250B2 (ja) スパンボンド不織布
JP2020196962A (ja) スパンボンド不織布
CN112771221A (zh) 纺粘无纺布
TWI810398B (zh) 紡黏不織布、紡黏纖維、及積層不織布
JP7211070B2 (ja) スパンボンド不織布

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200423

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20210324

RIC1 Information provided on ipc code assigned before grant

Ipc: D04H 3/16 20060101AFI20210319BHEP

Ipc: D01F 6/46 20060101ALI20210319BHEP

Ipc: D04H 3/007 20120101ALI20210319BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20221116

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230515

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018058436

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230922

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231227

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231228

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20231102

Year of fee payment: 6

Ref country code: DE

Payment date: 20231024

Year of fee payment: 6

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230927

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1615520

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240127

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240129

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20231031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231030

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018058436

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231031

26N No opposition filed

Effective date: 20240628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231030

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240905

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230927

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240910

Year of fee payment: 7