JP4211556B2 - Long fiber nonwoven fabric and fiber product using the same - Google Patents

Description

  The present invention relates to a long-fiber nonwoven fabric having a fitting property. More specifically, long fibers that have a good balance between fit and anti-blocking properties, have an excellent texture, do not generate harmful gases during combustion, and are recyclable. The present invention relates to a nonwoven fabric and a fiber product using the same.

  Conventionally, as a method for imparting anti-slip properties to carpets, mats, etc., a method of coating or adhering an adhesive component on the entire back side is known. However, the products obtained by these methods have a problem that blocking occurs between the back side surfaces and a bad touch feeling because the adhesive component covers the entire surface.

  Further, an anti-slip material made of a melt blown nonwoven fabric in which hydrogenated block copolymer fibers and polyolefin fibers are mixed has been proposed (see, for example, Patent Document 1). However, this hydrogenated block copolymer has at least two polymer blocks A mainly composed of aromatic vinyl compounds and at least two polymer blocks B mainly composed of conjugated diene compounds, And at least one polymer block B is at the end of the polymer chain, the total number average molecular weight is in the range of 30000 to 65000, and the content of the aromatic vinyl compound is 15 to 40% by weight. Obtained by hydrogenating the polymer. The meltblown nonwoven fabric containing the hydrogenated block copolymer fiber has an anti-slip effect and improved tactile sensation, but the problem of severe blocking remains.

  Further, an anti-slip sheet made of a melt blown nonwoven fabric obtained by adding an inelastic polymer to an elastic polymer has been proposed (see, for example, Patent Document 2). However, this also has an anti-slip effect, but is severely blocked, and may not be used as a product at the stage of feeding out a product roll, and a solution has been desired.

Japanese Patent Laid-Open No. 06-17355 (pages 2 to 4) Japanese Patent Laid-Open No. 11-18908 (pages 2 and 3)

  An object of the present invention is to provide a long-fiber non-woven fabric having a good balance between fit and anti-blocking properties and excellent in texture, and a fiber product using the same. Specifically, it is to provide a long-fiber non-woven fabric having good anti-blocking properties while using an adhesive component, that is, a long-fiber non-woven fabric having a certain degree of adhesiveness and suppressing blocking phenomenon, and a fiber product using the same. It is.

  The inventors of the present invention have made extensive studies to solve the above problems. As a result, it has been found that a long-fiber nonwoven fabric having the following configuration can solve the above-mentioned problems, and the present invention has been completed based on this finding.

The present invention is constituted by the following.
[1] A long-fiber nonwoven fabric characterized in that adhesive fibers and non-adhesive fibers are mixed in a ratio of 30/70 wt% to 95/5 wt% and satisfy the following characteristics.
・ Static friction coefficient: 0.40 or more (25 ° C., relative humidity 65%)
・ Peel strength (when long-fiber nonwoven fabrics are overlapped): 3 N / 25 mm or less (25 ° C., relative humidity 65%)
[2] The average fiber diameter (Cd) of the non-adhesive fiber is 1 to 10 μm, and the average fiber diameter (Dd) of the adhesive fiber is 5 to 30 μm. Fiber nonwoven fabric.
[3] The item [1] or [2], wherein the average fiber diameter (Cd) of the non-adhesive fiber and the average fiber diameter (Dd) of the adhesive fiber are in a relationship of Cd ≦ Dd. The long-fiber nonwoven fabric described.
[4] The adhesive fiber according to any one of [1] to [3], wherein the adhesive fiber is composed of at least one selected from the group of adhesive components consisting of the following (1) to (5): The long-fiber nonwoven fabric described.
(1) Having at least one polymer block (A) mainly composed of an aromatic vinyl compound, having at least one polymer block (B) mainly composed of a conjugated diene compound, and derived from a conjugated diene Styrene block copolymer in which the double bond of the part is saturated 80% or more.
(2) A hydrogenated styrene diene copolymer in which a double bond in a conjugated diene-derived portion of a random copolymer of a conjugated diene compound and an aromatic vinyl compound is saturated by 80% or more.
(3) A copolymer of ethylene and an α-olefin having 3 to 10 carbon atoms or a copolymer of propylene and an α-olefin having 4 to 10 carbon atoms.
(4) An olefin polymer obtained by hydrogenating a conjugated diene polymer.
(5) Amorphous polypropylene.
[5] The long-fiber nonwoven fabric according to any one of [1] to [3], wherein the adhesive component constituting the adhesive fiber is the following (1).
(1) Having at least one polymer block (A) mainly composed of an aromatic vinyl compound, having at least one polymer block (B) mainly composed of a conjugated diene compound, and derived from a conjugated diene Styrene block copolymer in which the double bond of the part is saturated 80% or more.
[6] The long-fiber nonwoven fabric according to any one of [1] to [3], wherein the adhesive component constituting the adhesive fiber is the following (2).
(2) A hydrogenated styrene diene copolymer in which a double bond in a conjugated diene-derived portion of a random copolymer of a conjugated diene compound and an aromatic vinyl compound is saturated by 80% or more.
[7] The long-fiber nonwoven fabric according to any one of [1] to [3], wherein the adhesive component constituting the adhesive fiber is the following (3).
(3) A copolymer of ethylene and an α-olefin having 3 to 10 carbon atoms or a copolymer of propylene and an α-olefin having 4 to 10 carbon atoms.
[8] The long fiber nonwoven fabric according to any one of [1] to [3], wherein the adhesive component constituting the adhesive fiber is the following (4).
(4) An olefin polymer obtained by hydrogenating a conjugated diene polymer.
[9] The long fiber nonwoven fabric according to any one of [1] to [3], wherein the adhesive component constituting the adhesive fiber is the following (5).
(5) Amorphous polypropylene.
[10] Any of the above [1] to [9], wherein the non-adhesive fiber is composed of at least one selected from the group of non-adhesive components comprising a polyolefin resin, a polyester resin and a polyamide resin. The long fiber nonwoven fabric according to claim 1.
[11] A long-fiber nonwoven fabric in which adhesive fibers and non-adhesive fibers are mixed at 50/50 wt% to 95/5 wt%, and the long-fiber nonwoven fabric satisfies the following characteristics: The long fiber nonwoven fabric according to any one of [1] to [10].
・ Coefficient of static friction: 0.60 or more (25 ° C., relative humidity 65%)
・ Peel strength (when long-fiber nonwoven fabrics are overlapped): 2 N / 25 mm or less (25 ° C., relative humidity 65%)
[12] The long fiber nonwoven fabric according to any one of [1] to [11], wherein the long fiber nonwoven fabric is a melt blown nonwoven fabric.
[13] The long fiber nonwoven fabric according to any one of [1] to [11], wherein the long fiber nonwoven fabric is a spunbonded nonwoven fabric.
[14] The long fiber nonwoven fabric according to any one of [1] to [13], wherein at least one selected from films, nonwoven fabrics, webs, woven fabrics, knitted fabrics, paper, and fiber bundles other than the long fiber nonwoven fabric is used. A laminated non-woven fabric.
[15] A fiber product using the long-fiber nonwoven fabric according to any one of [1] to [13] or the laminated nonwoven fabric according to [14].

  The long-fiber non-woven fabric of the present invention has an adhesive fiber that is exposed on the surface of the non-woven fabric because the adhesive fiber and the non-adhesive fiber are mixed at a weight ratio of 30/70 wt% to 95/5 wt%. Is covered with a non-adhesive fiber in an appropriate ratio, the balance between fit and anti-blocking properties is good, and the texture is excellent. In addition, by using a specific resin as the adhesive component, no harmful gas is generated during combustion, and recycling is possible. Moreover, the long fiber nonwoven fabric and laminated nonwoven fabric of this invention can be utilized suitably for the textiles using these characteristics.

Hereinafter, the present invention will be described in detail.
In the present invention, the anti-slip property and the adhesion property are collectively referred to as fit. The nonwoven fabric excellent in fit refers to a nonwoven fabric excellent in anti-slip properties and adhesion. In this performance, the tacky component of the fiber is greatly involved, but if a tacky component is used, a blocking phenomenon occurs during handling of the nonwoven fabric, so in the present invention, the tacky fiber containing the tacky component, A non-adhesive fiber that does not contain this is used to form a long fiber nonwoven fabric. Specifically, the long-fiber nonwoven fabric of the present invention has a configuration in which adhesive fibers and non-adhesive fibers are mixed at a ratio of 30/70 wt% to 95/5 wt%. Furthermore, the long-fiber nonwoven fabric has a static friction coefficient of 0.40 or more (25 ° C., relative humidity 65%), and peel strength (when the long-fiber nonwoven fabrics are overlapped with each other and the two long-fiber nonwoven fabrics are peeled off) It is necessary to satisfy the characteristic that (strength) is 3 N / 25 mm or less (25 ° C., relative humidity 65%). The long-fiber nonwoven fabric satisfying these configurations and characteristics has a good balance between fit and anti-blocking properties.
In addition, the long fiber nonwoven fabric of this invention is comprised from a long fiber. Specifically, a fiber having a fiber length exceeding 300 mm is preferable. Therefore, the short fiber nonwoven fabric made into a nonwoven fabric through the web state by the card method is not included.

The adhesive fiber of this invention can be manufactured from at least 1 sort (s) chosen from the group of the adhesive component which consists of following (1)-(5). By using these resin components, adhesion and spinnability are improved.
(1) Having at least one polymer block (A) mainly composed of an aromatic vinyl compound, having at least one polymer block (B) mainly composed of a conjugated diene compound, and derived from a conjugated diene Styrene block copolymer in which the double bond of the part is saturated 80% or more.
(2) A hydrogenated styrene diene copolymer in which a double bond in a conjugated diene-derived portion of a random copolymer of a conjugated diene compound and an aromatic vinyl compound is saturated by 80% or more.
(3) A copolymer of ethylene and an α-olefin having 3 to 10 carbon atoms or a copolymer of propylene and an α-olefin having 4 to 10 carbon atoms.
(4) An olefin polymer obtained by hydrogenating a conjugated diene polymer.
(5) Amorphous polypropylene.

The adhesive component (1) has at least one polymer block (A) mainly composed of an aromatic vinyl compound and has at least one polymer block (B) mainly composed of a conjugated diene compound. And a styrene block copolymer in which the double bond in the conjugated diene-derived moiety is saturated by 80% or more. The term “mainly” means that the compound constituting the polymer block accounts for at least 50% by weight of the polymer block.
Examples of the aromatic vinyl compound constituting the styrene block copolymer include styrene, α-methylstyrene, vinyltoluene, p-tert-butylstyrene and the like, and styrene is particularly preferable. These aromatic vinyl compounds may be used alone or in combination of two or more. Examples of the conjugated diene compound constituting the styrene block copolymer include 1,3-butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene, and the like. Isoprene is preferred. These may be used alone or in combination of two or more. Moreover, it is preferable that 80% or more of the double bond of the conjugated diene origin part is hydrogenated from the point of stability of a compound, spinnability, etc. in the said styrene block copolymer. Specifically, blocks such as styrene-ethylenebutylene-styrene block copolymer (SEBS), styrene-ethylenepropylene-styrene block copolymer (SEPS), and styrene-ethylenebutylene-olefin crystal block copolymer (SEBC). A copolymer is mentioned. More specifically, “KRATON G” manufactured by Kraton Polymer Japan Co., Ltd., “SEPTON” manufactured by Kuraray Co., Ltd., “JSR DYNARON” manufactured by JSR Co., Ltd. It is done.

  The adhesive component (2) is a hydrogenated styrene diene copolymer in which a double bond of a conjugated diene-derived portion of a random copolymer of a conjugated diene compound and an aromatic vinyl compound is saturated by 80% or more. Examples of the monomer of the conjugated diene compound constituting the styrene diene copolymer include 1,3-butadiene, isoprene, 1,3-pentadiene, 2,2-dimethylbutadiene, 3-ethylbutadiene and the like. 1,3-butadiene, isoprene and 1,3-pentadiene are preferred, and 1,3-butadiene is more preferred. Examples of the aromatic vinyl compound constituting the styrene diene copolymer include styrene, α-methylstyrene, p-methylstyrene, p-ethylstyrene, vinylnaphthalene and the like. Styrene, p-methylstyrene, and p-ethylstyrene are preferable, and styrene is more preferable. The hydrogenated styrene diene copolymer is a copolymer of at least one conjugated diene and 3 to 50% by weight of an aromatic vinyl compound, and has a molecular weight distribution (Mw / Mn = weight average molecular weight / number average molecular weight). Is a copolymer in which at least 80% of the olefinically unsaturated bonds of the copolymer in which the vinylene content of the diene part constituting the copolymer is 10 to 90% by weight is hydrogenated. It is. More specifically, “JSR DYNARON” manufactured by JSR Corporation (“” is a trade name) and the like.

The adhesive component (3) is a copolymer of ethylene and an α-olefin having 3 to 10 carbon atoms or a copolymer of propylene and an α-olefin having 4 to 10 carbon atoms.
Examples of the α-olefin include propylene, 1-butene, 3-methyl-1-butene, 4-methyl-1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-heptene, 1-octene, 1-nonene, 1-decene and the like can be mentioned. Among the α-olefins, 1-butene, 1-pentene, 1-hexene and 1-octene are particularly preferable. These α-olefins can be used singly or in combination of two or more. In the present invention, an ethylene-α-olefin copolymer such as an ethylene-octene copolymer and an ethylene-butene copolymer in combination of these can be preferably used. Further, the copolymer of ethylene and an α-olefin having 3 to 10 carbon atoms or the copolymer of propylene and an α-olefin having 4 to 10 carbon atoms used in the present invention is 1.5 from the viewpoint of spinnability. A molecular weight distribution (Mw / Mn) of ˜4 is preferred. Specifically, “Engage” manufactured by DuPont Dow Elastomer Japan Co., Ltd. and “Tuffmer” manufactured by Mitsui Chemicals Co., Ltd. (both are trade names)) are exemplified. The olefin copolymer used in the present invention may be a copolymer produced by a metallocene catalyst. In addition, the terpolymer which added the diene monomer for bridge | crosslinking to (alpha) -olefin is also contained, Specifically, ethylene-propylene-diene rubber and ethylene-butene-diene rubber can be illustrated.

  The adhesive component (4) is an olefin polymer obtained by hydrogenating a conjugated diene polymer. Examples of the conjugated diene polymer monomer constituting the olefin polymer include 1,3-butadiene, isoprene, 1,3-pentadiene, 2,2-dimethylbutadiene, and 3-ethylbutadiene. 1,3-butadiene, isoprene and 1,3-pentadiene are preferred, and 1,3-butadiene is more preferred. The adhesive component (4) also includes a block type such as an olefin crystal-ethylene butylene-olefin crystal block copolymer called CEBC.

The adhesive component (5) is amorphous polypropylene. The amorphous polypropylene is one having a crystallinity of about 65 J / g or less. Crystallinity or heat of fusion (ΔHf) can be measured by DSC according to American Society for Testing Materials (ASTM) D-3417.
In the present invention, propylene-based amorphous polymers described in US Pat. No. 5,948,720, US Pat. No. 5,723,546, EP 0475307B1 and EP 0475306B1 can be preferably used. Specific examples of amorphous polypropylene include amorphous ethylene-propylene copolymer, amorphous propylene homopolymer, and amorphous butylene-propylene copolymer. These polymers have a density of about 0.87 g / cm ³ to 0.89 g / cm ³ , a tensile modulus of less than about 3.44 Pa (ASTM D-638), and / or an elongation (%) of about It must be greater than 900. However, various other amorphous propylene copolymers may be used in the present invention. In this regard, stereoblock polymers are a particularly preferred embodiment for the practice of the present invention. The term “stereoblock polymer” refers to a polymeric material that has controlled region stereoregularity or configuration to achieve a targeted degree of crystallinity. By controlling the steric arrangement during the polymerization, it is possible to achieve atactic, isotactic, and stereoblocks. Methods for producing polyolefin stereoblock polymers are known in the prior art and are described in the following papers. Science Journal 267 (January 1995), pages 217-219. Cortes and R.C. Weymouth's “Vibration Stereocontrol: Strategies for Synthesizing Thermoplastic Elastomers / Polypropylene” and K.S., page 191 of Science 267 (January 1995). Wagener's “Vibration Catalysts: New Developments in Plastics”. Stereoblock polymers and methods for their production are described in US Pat. No. 5,549,080 and US Pat. No. 5,208,304. As described above, controlling the degree of crystallinity of the alpha olefin allows for polymers that exhibit unique tensile coefficients and / or elongation characteristics. For example, a suitable commercially available polymer is Lexflex Flexible Polyolefins manufactured by Huntsman Corporation.

  As the non-adhesive fiber used in the present invention, a known non-adhesive component can be used, but at least one fiber selected from the group of non-adhesive components consisting of polyolefin resin, polyester resin and polyamide resin is used. preferable. The non-adhesive component is a resin that is not self-adhesive and is easy to mold, particularly easy to spin by the melt blow method. Among these, polyolefin resins can be preferably used from the viewpoint of cost and moldability because the resulting nonwoven fabric has good texture and slipperiness. Of these, polypropylene and polyethylene are particularly preferred.

In the non-adhesive component used in the present invention, an additional additive may be blended as necessary within a range not impairing the effects of the present invention. Examples of additives include UV absorbers, thickening branching agents (herein, thickening branching agents increase the viscosity of non-adhesive components but do not impart tackiness), matting agents, colorants, and softeners. Imparting agent, anti-aging agent, heat stabilizer, weathering agent, metal deactivator, light stabilizer, copper damage inhibitor, antibacterial / antifungal agent, dispersant, softener, plasticizer, crystal nucleating agent, difficult Examples include flame retardants, foaming agents, foaming aids, titanium oxide, mica, calcium carbonate, talc, silica, calcium silicate, hydrotalcite, kaolin, polyolefin wax, cellulose powder, and low molecular weight polymers. However, an additive that imparts tackiness should not be added to the non-tacky component.
In particular, in applications used outdoors, any of conventionally used ultraviolet absorbers can be used, such as 2-hydroxy-4-methoxy-benzophenone, 2-hydroxy-4-n-octoxy-benzophenone, Benzophenone ultraviolet absorbers such as 4-dodecyloxy-2-hydroxy-benzophenone, 2- (2′-hydroxy-3 ′, 5′-di-t-butylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′) Benzotriazole ultraviolet absorbers such as -t-butyl-5'-methylphenyl) benzotriazole, salicylic acid ester ultraviolet absorbers such as p-octylphenyl salicylate and dodecyl salicylate, 2-ethylhexyl-2-cyano -3,3-diphenyl acrylate and the like.
Moreover, said additive may be mix | blended with the adhesive component used for this invention similarly to a non-adhesive component. Furthermore, a tackifier may be added to the adhesive component as long as the balance between fit and anti-blocking properties, which are the effects of the present invention, is not impaired. Various additives can be used as the tackifier, but hydrogenated hydrocarbon resins having high temperature stability can be preferably used.

  Examples of the method for producing a long-fiber nonwoven fabric include a spunbond method in which a molten thermoplastic resin is spun and stretched, opened, collected and entangled to form a nonwoven fabric. Examples thereof include a melt blow method in which a nonwoven fabric is formed by spraying with air to form a nonwoven fabric, a tow opening method in which a long fiber bundle of a thermoplastic resin is stretched, and the nonwoven fabric is formed by opening and widening after crimping. . Of these, the spunbond method and the melt blow method are preferred, and the melt blow method is particularly preferred from the viewpoints of productivity, production cost, ease of production, and texture.

  The method for producing the long fiber nonwoven fabric of the present invention is specifically exemplified. A method for producing a nonwoven fabric in which adhesive fibers and non-adhesive fibers are mixed by the spunbond method is disclosed in JP-A-2002-242069, and a spinneret having a structure in which spinning holes from which different kinds of resins flow are alternately arranged in a row Can be used. By using this die, a web in which adhesive fibers and non-adhesive fibers are uniformly mixed can be obtained. Further, a spinneret for adhesive fibers and a spinneret for non-adhesive fibers are used in combination, and an adhesive fiber web and a non-adhesive fiber web obtained by each spinneret are laminated, and a needle is attached to this laminate. A method of entanglement with a punch or the like to mix fibers together may be used. Also, changing the number of spinning holes assigned to the adhesive component and non-adhesive component, or changing the amount of each fiber in the spunbonded nonwoven fabric by changing the extrusion amount of each component Can do. In addition, a mixture having different fineness can be obtained by changing the extrusion amount per spinning hole of each component and performing spinning by spinning using a die having different pore diameters of each component. In addition, the adhesive fiber preferably has a fiber surface in which the adhesive component is completely coated. For example, a fiber having a structure in which the core component / sheath component is a non-adhesive component / adhesive component in the fiber cross section of the sheath core structure. May be used. The non-adhesive fiber preferably has a non-adhesive component completely coated on the fiber surface. For example, the core component / sheath component has a structure in which the core component / sheath component becomes an adhesive component / non-adhesive component in the cross section of the sheath core structure. Fibers can also be used in the present invention.

  A method for producing a non-woven fabric in which adhesive fibers and non-adhesive fibers are mixed by a melt-blowing method is disclosed in U.S. Pat. No. 3,981,650. Can be used. By using this die, a web in which adhesive fibers and non-adhesive fibers are uniformly mixed can be obtained. Further, a spinneret for adhesive fibers and a spinneret for non-adhesive fibers are used in combination, and an adhesive fiber web and a non-adhesive fiber web obtained by each spinneret are laminated, and a needle is attached to this laminate. A method of intermingling fibers with a punch or the like to mix fibers together may be used. In order to obtain a more uniform mixed fiber web, it is preferable to use a spinneret described in JP-A-7-102408. By changing the number of spinning holes allocated to the adhesive component and the non-adhesive component, or by changing the extrusion amount of each component, the amount of fibers mixed in the melt blown nonwoven fabric can be changed. In addition, a mixture having different fineness can be obtained by changing the extrusion amount per spinning hole of each component and performing spinning by spinning using a die having different pore diameters of each component. In addition, the adhesive fiber preferably has a fiber surface in which the adhesive component is completely coated. For example, a fiber having a structure in which the core component / sheath component is a non-adhesive component / adhesive component in the fiber cross section of the sheath core structure. May be used. The non-adhesive fiber preferably has a non-adhesive component completely coated on the fiber surface. For example, the core component / sheath component has a structure in which the core component / sheath component becomes an adhesive component / non-adhesive component in the cross section of the sheath core structure. Fibers can also be used in the present invention.

  The weight ratio in the nonwoven fabric of the adhesive fiber and non-adhesive fiber of this invention is adhesive fiber / non-adhesive fiber = 30/70 weight%-95/5 weight%. When the adhesive fiber is 30% by weight or more, the fit is very good. Further, when the non-adhesive fiber is 5% by weight or more, the anti-blocking property is very good. More preferably, adhesive fiber / non-adhesive fiber = 40/60 wt% to 95/5 wt%, and more preferably 50/50 wt% to 90/10 wt%. The long fiber nonwoven fabric of the present invention is blended at the above weight ratio, so that the adhesive fibers exposed on the surface of the nonwoven fabric are covered with a non-adhesive fiber in an appropriate ratio. The balance with the property is good and the texture is excellent.

  The fiber diameter of the fibers constituting the long-fiber nonwoven fabric of the present invention is such that the average fiber diameter (Cd) of the non-adhesive fibers is 1 to 10 μm and the average fiber diameter (Dd) of the adhesive fibers is 5 to 30 μm. Is preferred. Furthermore, it is preferable that the average fiber diameter (Cd) of the non-adhesive fiber and the average fiber diameter (Dd) of the adhesive fiber have a relationship of Cd ≦ Dd. The smaller the average fiber diameter (Cd) of the non-adhesive fibers, the greater the surface area of the non-adhesive fibers. Therefore, even if the non-adhesive fibers are contained in the same weight in the nonwoven fabric, the area of the non-adhesive fibers exposed on the nonwoven fabric surface is small. Since it increases, the texture and anti-blocking properties can be improved. In addition, since the surface area of the adhesive fiber decreases as the average fiber diameter (Dd) of the adhesive fiber increases, the area of the adhesive fiber exposed on the nonwoven fabric surface decreases even if it is contained in the same weight in the nonwoven fabric. Therefore, the anti-blocking property is improved. Further, since the fiber strength is increased by increasing the fiber diameter, the fuzzing property is improved, which is preferable. For this reason, in this invention, since the melt blow method which can manufacture a fiber with a smaller fiber diameter can fully exhibit these effects, it can utilize especially preferable.

  As long as the fibers constituting the long-fiber nonwoven fabric of the present invention contain at least two types of adhesive fibers and non-adhesive fibers in the above ratio, fibers composed of different types of adhesive components or different types of non-adhesive properties There may be three, four, or more including the fibers composed of the components, but the case of two types of mixed fibers is the most preferable aspect from the viewpoint of production cost and productivity.

  The cross-sectional shape of the fibers constituting the long fiber nonwoven fabric of the present invention is not particularly limited as long as the spinnability is not impaired. Specific examples include a round cross section, an irregular (non-circular) cross section, and a hollow cross section.

  The long-fiber nonwoven fabric of the present invention has a static friction coefficient of 0.40 or more (25 ° C., relative humidity 65%). The static friction coefficient was measured using the 3.2 slope method of JIS P 8147 “Test method for friction coefficient of paper and paperboard”. If the static friction coefficient calculated in this way is smaller than 0.40, for example, when used for carpet underlay, the carpet easily slips during human walking, resulting in insufficient fit effect. The static friction coefficient of the long fiber nonwoven fabric of the present invention is preferably 0.60 or more.

  The strength (hereinafter referred to as peel strength) when the long-fiber nonwoven fabrics of the present invention are overlapped and the two long-fiber nonwoven fabrics are peeled off is 3 N / 25 mm (25 ° C., relative humidity 65%) or less. In the present invention, the effects of the present invention are sufficiently exhibited when the adhesive fibers and the non-adhesive fibers are mixed in the nonwoven fabric. In the present invention, the main role of the non-adhesive fiber is to improve the anti-blocking property. When the weight ratio of the tacky fibers increases and the surface area increases, the fit (static friction coefficient and adhesion) increases, and when the weight ratio of the non-tacky fibers increases and the surface area increases, the anti-blocking properties become good.

  The anti-blocking property is better as the peel strength is smaller, and needs to be 3 N / 25 mm or less (25 ° C., relative humidity 65%). More preferably, the peel strength is 2.5 N / mm or less (25 ° C., relative humidity 65%), and most preferably 2 N / 25 mm or less (25 ° C., relative humidity 65%). If the peel strength is small, the feeding property when the nonwoven fabric wound in a roll shape is further processed into a product becomes good. Conversely, if the peel strength is high, a strong force is required when feeding. Moreover, when blocking is remarkable, there exists a possibility that a nonwoven fabric may break at the time of peeling, and even if a break does not occur, the nonwoven fabric expands at the time of peeling, and cannot be used for subsequent processing. In particular, if the anti-blocking property is poor, there is a problem that the sticking between fibers is likely to occur due to high temperature and loading during storage in the summer, and the operability at the time of feeding the nonwoven fabric wound in a roll shape is deteriorated.

Although the fabric weight of the long-fiber nonwoven fabric of this invention is not specifically limited, 1-300 g / m < ² > is preferable, More preferably, it is 3-200 g / m < ² >, More preferably, it is 5-150 g / m < ² >. Moreover, you may heat-process according to the objective. In general, the heat treatment is performed at a temperature between the softening point of the adhesive component used and the softening point of the non-adhesive component. As a heat treatment method, a known method such as a thermocompression bonding method using a heated embossing roll, a through air method using heated air, or a method using an infrared lamp can be used. In addition, any one or more of sonic bond processing, water jet processing, needle punch processing, and resin bond processing may be performed.

  In the present invention, the obtained long fiber nonwoven fabric can be used as a laminated nonwoven fabric by laminating at least one selected from films, nonwoven fabrics, webs, woven fabrics, knitted fabrics, paper, and fiber bundles other than the long fiber nonwoven fabric. . The material used for lamination is not particularly limited, and any material can be laminated depending on the purpose. Examples include, but are not limited to, a punched nonwoven fabric, a meltblown nonwoven fabric, a spunlace nonwoven fabric, an airlaid nonwoven fabric, a polypropylene film, a polyethylene film, an elastomer film, a spunbond point bond nonwoven fabric, and a through-air nonwoven fabric.

  Examples of the textile product using the long-fiber nonwoven fabric or laminated nonwoven fabric of the present invention include gloves, table cloths, doormat backings, furniture anti-slip materials, food transport underlays, carpet backings, masks, face masks, Shoe covers, mouse pads, hangers, clothing, headrest covers, chair covers, packaging materials, floor covers, ropes, shift covers, knob covers, band sheets, bed sheets, elbow sheets, medical tapes, bandages, flowers rather, za, Examples thereof include medical cloth, automobile sheet, house wrap sheet, and roof base material, but the application is not limited thereto.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention concretely, this invention is not limited to these Examples. In addition, the measurement result in the following Examples and Comparative Examples was performed by the following method.

(Peel strength)
A plurality of sheets of 100 mm length and 100 mm width are cut from an arbitrary portion of the long-fiber nonwoven fabric and used as a test piece. Two test pieces are overlapped, an aluminum plate having a length of 100 mm and a width of 100 mm is placed thereon, a load is applied thereon so that the total weight is 5 kg, and the plate is left in an oven at 50 ° C. After leaving it for 24 hours, it is taken out into a room at 25 ° C./65% relative humidity, cut into a width of 25 mm, and the nonwoven fabrics are peeled off by hand from one end in the longitudinal direction to a length of 50 mm. Using Autograph AG-G (trade name) manufactured by Shimadzu Corporation, both ends of the non-woven fabric peeled off were fixed to upper and lower chucks set to 50 mm between chucks. The nonwoven fabric was pulled at a tensile speed of 100 mm / min until the nonwoven fabrics were completely peeled off, the strength was measured, and the average value was defined as the peel strength (N / 25 mm) (N = 5). The smaller the peel strength, the better the anti-blocking property.

(Static friction coefficient)
The 3.2 tilt method of JIS P 8147 “Testing method for friction coefficient of paper and paperboard” was used.

(Average fiber diameter)
10 mm long and 10 mm wide non-woven pieces (total of 5 pieces) were cut out from five arbitrary locations of the long-fiber non-woven fabric, and the surface was observed with a scanning electron microscope manufactured by JEOL Ltd. The diameter of 20 fibers was measured from one piece of nonwoven fabric, and this was measured for five pieces of nonwoven fabric, and the average value of the total 100 fiber diameters was calculated as the average fiber diameter (D). Then, using any of the following solvents from which only the adhesive fibers are eluted, measure the average fiber diameter (Ad) of the non-adhesive fibers of the nonwoven fabric after removing only the adhesive fibers using a Soxhlet extraction device. did.
The weight ratio of adhesive fiber / non-adhesive fiber was determined in advance, and then the density of the resin to be formed was determined in accordance with JIS L 1015 (density gradient tube method). From these, the weight ratio of adhesive fiber / non-adhesive fiber was converted to volume ratio. Then, the average fiber diameter (Bd) of the adhesive fiber was calculated by the following formula.
Non-adhesive fiber density: Aρ
Adhesive fiber density: Bρ
Non-adhesive fiber / adhesive fiber weight ratio: Aw / Bw
Non-adhesive fiber volume fraction Av:
Av = (Aw / Aρ) / ((Bw / Bρ) + (Aw / Aρ))
Adhesive fiber volume ratio Bv:
Bv = (Bw / Bρ) / ((Bw / Bρ) + (Aw / Aρ))
Fiber diameter Bd of adhesive fiber:
Bd = (D−Ad × Av) / Bv
The following solvents can be used as the extraction solvent.
Polyurethane elastomer: concentrated hydrochloric acid polystyrene elastomer: toluene polyolefin elastomer: toluene polyamide elastomer: aniline polyester elastomer: concentrated sulfuric acid

(Fluffing)
Prepare a 150 mm long and 65 mm wide non-woven fabric and affix it to the special jig table with double-sided tape. The size in the surface characteristics of the vertical × horizontal is 30 mm × 30 mm: 2.0 micrometers Ra, using an aluminum plate of Rmax15.5Myuemu (measured by MITSUTOYO suftest-401), to the long fiber nonwoven fabric, 1.09 × ¹⁰ 4 Pa (111gf / Converted so that a load of (cm ² converted value) is applied. The surface of the non-woven fabric is moved 100 mm at a speed of 100 mm / min, and the operation is performed three times to observe the surface fluff state. The case where fluff appeared was evaluated as x, and the case where fluff did not appear was evaluated as ○.

The abbreviations and contents of the non-adhesive components (raw resin) used in the present invention are as follows.
A-1: Polypropylene, Chisso Polypro CS3300 ((trade name), manufactured by Chisso Corporation).
A-2: Polyethylene terephthalate, K101 ((trade name), manufactured by Kanebo Corporation)
A-3: Nylon 6, UBE NYLON 1011FB ((trade name), manufactured by Ube Industries, Ltd.).
A-4: Polyethylene, Chissopolyethylene S6900 ((trade name), manufactured by Chisso Corporation).

The abbreviations and contents of the adhesive component (raw resin) used in the present invention are as follows.
B-1: Styrene-ethylenebutylene-styrene block copolymer, DYNARON 8600P ((trade name), manufactured by JSR Corporation).
B-2: Hydrogenated styrene diene copolymer, DYNARON 2324P ((trade name), manufactured by JSR Corporation).
B-3: Ethylene-octene copolymer, Engage 8401 ((trade name), manufactured by DuPont Dow Elastomer Japan Co., Ltd.)
B-4: Hydrogenated diene copolymer, DYNARON 6200P ((trade name), manufactured by JSR Corporation)
B-5: Amorphous ethylene-propylene copolymer, Lexflex flexible polyolefins W201 ((trade name), manufactured by Huntsman Corporation). Melt flow rate 19 g / 10 min, tension coefficient 6, density 0.88 g / cm ³ .
B-6: Polyester elastomer, Glease E-200LV ((trade name), manufactured by Dainippon Ink & Chemicals, Inc.).
B-7: Polyamide elastomer, Pebax 2533 ((trade name), manufactured by Atofina Japan Co., Ltd.).
B-8: Thermoplastic polyurethane polymer, Pandex T-1180 (trade name, manufactured by DIC-Bayer).

Example 1
A-1 as the non-adhesive component and B-1 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. Two extruders with a screw (30 mm diameter), heating element and gear pump, spinneret for blending fibers (hole diameter 0.3 mm, spinning holes arranged in a row in order to discharge fibers of different components alternately, number of holes 501 holes, effective width 500 mm), a compressed air generator, an air heater, a collecting conveyor equipped with a polyester net, and a wind blower were used to produce a melt blown nonwoven fabric. The non-adhesive component and the adhesive component are respectively charged into each extruder, and the non-adhesive component is heated and melted at 270 ° C. and the adhesive component is heated at 230 ° C. by the heating body, and the ratio of non-adhesive component / adhesive component Set the gear pump so that (wt%) is 30/70, and discharge from the spinneret at a spinning speed of A-1 of 0.08 g / min and B-1 of 0.18 g / min per single hole. The fibers were sprayed onto a collection conveyor of a polyester net running at a running speed of 2 m / min with compressed air of 98 kPa (gauge pressure) heated to 400 ° C. The collection conveyor was installed at a distance of 25 cm from the spinneret. The blown air was removed with a suction device provided on the back side of the collection conveyor. The nonwoven fabric conveyed by the collection conveyor was wound up into a roll shape by a winder to obtain a melt blown nonwoven fabric having a basis weight of 61 g / m ² . Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

  Moreover, the melt blown nonwoven fabric obtained in Example 1 was used as a table cloth. Actually put it on the table and put the tableware on it. Although the table was tilted at an angle of 30 °, the tableware and the table cloth did not move, indicating excellent fit.

  Moreover, the melt blown nonwoven fabric obtained in Example 1 was used under the entrance mat. Although used for one month, the doormat did not move and showed excellent fit.

In addition, a composite spunbonded nonwoven fabric made of polyethylene and polypropylene having a basis weight of 50 g / m ² was prepared in advance. And in the process of manufacturing the melt blown nonwoven fabric of Example 1, the said composite spun bond nonwoven fabric was inserted, and the melt blown nonwoven fabric of Example 1 was laminated | stacked on it. The conveyor speed at this time was 20 m / min, and the basis weight of the melt blown nonwoven fabric to be laminated was 6 g / m ² . Furthermore, it processed with the point bond processing machine provided with a pair of embossing roll with a crimping | compression-bonding area rate of 24% to this laminated body of the nonwoven fabric. The laminated nonwoven fabric obtained had a good texture. Moreover, when the fitted surface of this laminated nonwoven fabric was used as a sheet with the band side facing, the sheet showed excellent fit without moving by turning over, and the composite spunbond nonwoven fabric contacting the human skin side had a texture. It was good. In addition, a fit surface here means the surface by the side of the melt blown nonwoven fabric obtained in Example 1.

In addition, a spunlace nonwoven fabric made of rayon with a basis weight of 100 g / m ² was prepared in advance. And in the process of manufacturing the meltblown nonwoven fabric of Example 1, the said rayon spunlace nonwoven fabric was inserted, and the meltblown nonwoven fabric of Example 1 was laminated | stacked on it. The conveyor speed at this time was 20 m / min, and the basis weight of the melt blown nonwoven fabric to be laminated was 6 g / m ² . Furthermore, it processed with the point bond processing machine provided with a pair of embossing roll with a crimping | compression-bonding area rate of 24% to this laminated body of the nonwoven fabric. A cosmetic face mask was produced by impregnating the obtained layered nonwoven rayon layer with skin lotion. When the fit face of the obtained face mask was applied to the face facing the skin, the fit to the face was good and the texture was good. In addition, a fit surface here means the surface by the side of the melt blown nonwoven fabric obtained in Example 1.

In addition, on the upstream side of the melt-blowing device, two extruders having a screw (40 mm diameter), a heating element, and a gear pump, a composite type spinneret (hole diameter 0.4 mm, 120 holes), air soccer, charging method opening machine, The laminated nonwoven fabric was produced in the line which installed the composite spunbond apparatus provided with the collection conveyor provided with the net | network made from polyester. High-density polyethylene is used on the sheath side, polypropylene is used on the core side, and the fiber is spun at a sheath-core ratio of 50/50 (% by weight). A web with a basis weight of 40 g / m ² made of 1.8 dtex fibers is placed on the conveyor. Obtained. And this web was directly inserted in the conveyor which manufactures the melt blown nonwoven fabric of Example 1, and the melt blown nonwoven fabric of Example 1 was laminated | stacked on it. Conveyor speed of the composite spunbond apparatus and meltblowing apparatus at this time, both was 20 m / min (basis weight 40 g / ^{m 2} of the composite spunbonded web, meltblown nonwoven having a basis weight of 6g / ^{m 2).} Further, this nonwoven fabric laminate was processed with a point bond processing machine equipped with a pair of embossing rolls with a crimp area ratio of 24%, and the resulting laminated nonwoven fabric was wound into a roll with a winder. This laminated nonwoven fabric had a good texture. Also, when the fitted surface of this laminated nonwoven fabric was used as a sheet facing the cocoon side, the sheet showed excellent fit without moving by turning over, and the texture of the composite spunbond nonwoven fabric that touched the human skin side It was good. In addition, a fit surface here means the surface by the side of the melt blown nonwoven fabric obtained in Example 1.

In addition, a spunlace nonwoven fabric made of cotton having a basis weight of 100 g / m ² was prepared in advance. And in the process of manufacturing the melt blown nonwoven fabric of Example 1, the said cotton spunlace nonwoven fabric was inserted, and the melt blown nonwoven fabric of Example 1 was laminated | stacked on it. The conveyor speed at this time was 20 m / min, and the basis weight of the melt blown nonwoven fabric to be laminated was 6 g / m ² . Furthermore, it processed with the point bond processing machine provided with a pair of embossing roll with a crimping | compression-bonding area ratio of 24% to this nonwoven fabric laminated body. When the obtained laminated nonwoven fabric was used as an elbow-placed sheet placed under the elbow at the time of blood collection with the fitting surface as the table side, the sheet could be collected safely without moving from the table. In addition, the skin side did not feel unpleasant to the blood sampler because of the good texture. In addition, a fit surface here means the surface by the side of the melt blown nonwoven fabric obtained in Example 1.

Example 2
Using the same raw material resin as in Example 1, the gear pump was set so that the ratio (weight%) of non-adhesive component / adhesive component was 20/80, and A-1 per single hole from the spinneret was set to 0.00. The melt blown nonwoven fabric was manufactured by the processing conditions and manufacturing apparatus based on Example 1 by discharging 05 g / min and B-1 at a spinning speed of 0.20 g / min. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric had good fit and antiblocking properties.

Moreover, was prepared Example 2 superposed resulting melt-blown nonwoven fabric in time before the prepared polypropylene spunbonded nonwoven (basis weight 50 g / m ^2), the crimping area ratio 17% point-bonded processing performed layered nonwoven fabric. The resulting laminated nonwoven fabric had good fit and anti-blocking properties, and was soft due to the polypropylene spunbonded nonwoven fabric. Furthermore, when the fit surface of the obtained laminated nonwoven fabric was used as a carpet with the floor side facing, the carpet did not move and exhibited excellent fit. In addition, a fit surface here means the surface by the side of the melt blown nonwoven fabric obtained in Example 2.

  Moreover, the glove was produced with the ultrasonic sewing machine using the melt blown nonwoven fabric obtained in Example 2. When these gloves were worn and used to carry beer bottles, they were not easily dropped from the hand that the beer bottles were gripped on, and they could be safely carried and showed excellent fit.

A spunlace nonwoven fabric made of polyester having a basis weight of 100 g / m ² was prepared in advance. And in the process of manufacturing the melt blown nonwoven fabric of Example 2, the said polyester spunlace nonwoven fabric was inserted, and the melt blown nonwoven fabric of Example 2 was laminated | stacked on it. The conveyor speed at this time was 20 m / min, and the basis weight of the melt blown nonwoven fabric to be laminated was 6 g / m ² . Furthermore, it processed with the point bond processing machine provided with a pair of embossing roll with a crimping | compression-bonding area rate of 24% to this laminated body of the nonwoven fabric. When the obtained laminated nonwoven fabric was used as an elbow-placed sheet placed under the elbow at the time of blood collection with the fitting surface as the table side, the sheet could be collected safely without moving from the table. Also, the skin contact side had a good texture and was not uncomfortable for the blood sampler. In addition, a fit surface here means the surface by the side of the melt blown nonwoven fabric obtained in Example 2.

In addition, an SMS nonwoven fabric made of polypropylene having a basis weight of 13 g / m ² was prepared in advance. This SMS nonwoven fabric consists of three layers of spunbond nonwoven fabric / melt blown nonwoven fabric / spunbond nonwoven fabric, and the weight per unit area is 5 g / m ² , 3 g / m ² , and 5 g / m ² . And in the process of manufacturing the melt blown nonwoven fabric of Example 2, the said SMS nonwoven fabric was inserted, and the melt blown nonwoven fabric of Example 2 was laminated | stacked on it. The conveyor speed at this time was 20 m / min, and the basis weight of the melt blown nonwoven fabric to be laminated was 6 g / m ² . Furthermore, it processed with the point bond processing machine provided with a pair of embossing roll with a crimping | compression-bonding area rate of 24% to this laminated body of the nonwoven fabric. The obtained laminated nonwoven fabric has a good texture and is used as a chair cover with a fitting surface laid on the chair side. The cover shows excellent fit without moving due to human movement, and water is placed on the cover. Even if it overflowed, the chair was not stained and it was good. In addition, a fit surface here means the surface by the side of the melt blown nonwoven fabric obtained in Example 2.

In addition, a through-air nonwoven fabric of ESC032SDL ((trade name), manufactured by Chisso Corporation) made of polyethylene and polypropylene having a basis weight of 30 g / m ² was prepared in advance. And in the process of manufacturing the melt blown nonwoven fabric of Example 2, the said through-air nonwoven fabric was inserted, and the melt blown nonwoven fabric of Example 2 was laminated | stacked on it. The conveyor speed at this time was 20 m / min, and the basis weight of the melt blown nonwoven fabric to be laminated was 6 g / m ² . Furthermore, it processed with the point bond processing machine provided with a pair of embossing roll with a crimping | compression-bonding area rate of 24% to this laminated body of the nonwoven fabric. The obtained laminated nonwoven fabric has a good texture, and when the fitting surface is used as a sheet with the fit side facing the band, the sheet shows excellent fit without moving by rolling over and touches the human skin side. The air nonwoven fabric had a good texture. In addition, a fit surface here means the surface by the side of the melt blown nonwoven fabric obtained in Example 2.

Moreover, the laminated nonwoven fabric was created in the line which installed the card machine and the through air machine which produce a web in the upstream of a melt blow apparatus. A staple web of ESC032SDL (trade name, manufactured by Chisso Co., Ltd.) made of polyethylene and polypropylene is supplied to the card machine to produce a card web having a basis weight of 20 g / m ² , and through air is processed through hot air at 135 ° C. with a through air machine. Then, the through-air nonwoven fabric was directly inserted into the conveyor for producing the melt-blown nonwoven fabric of Example 2, and the melt-blown nonwoven fabric of Example 2 was laminated thereon. conveyor speed of and meltblown device, are all set to 20 m / min (through-air nonwoven fabric having a basis weight of 20 g / ^{m 2,} melt-blown nonwoven fabric having a basis weight of 6g / ^{m 2).} further crimping area ratio of 24% of the pair to the laminate of the nonwoven fabric Processing is performed with a point bond processing machine equipped with embossing rolls. The cloth was wound into a roll with a winder.The laminated nonwoven fabric obtained had a good texture, and when the fitted surface was used as a sheet with the fit side facing the band, the sheet was excellent without moving by rolling over. The through-air nonwoven fabric showing good fit and contacting the human skin side had a good texture, and the fitting surface here refers to the surface on the melt blown nonwoven fabric side obtained in Example 2.

Example 3
Using the same raw material resin as in Example 1, the gear pump was set so that the ratio (weight%) of non-adhesive component / adhesive component was 10/90, and A-1 per single hole from the spinneret was set to 0.00. 03 g / min, B-1 was discharged at a spinning speed of 0.23 g / min, and a melt-blown nonwoven fabric was manufactured using the processing conditions and manufacturing apparatus according to Example 1. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 4
Using the same raw material resin as in Example 1, the gear pump was set so that the non-adhesive component / adhesive component ratio (% by weight) was 5/95, and A-1 per single hole from the spinneret was set to 0.00. The melt blown nonwoven fabric was manufactured by the processing conditions and manufacturing apparatus based on Example 1 by discharging 01g / min and B-1 at the spinning speed of 0.24g / min. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 5
Using the same raw material resin as in Example 1, the gear pump was set so that the non-adhesive component / adhesive component ratio (% by weight) was 50/50, and A-1 per single hole from the spinneret was set to 0.00. A melt blown nonwoven fabric was produced by processing conditions and production equipment according to Example 1 by discharging 13 g / min and B-1 at a spinning speed of 0.13 g / min. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Reference example 1
Using the same raw material resin as in Example 1, the gear pump was set so that the non-adhesive component / adhesive component ratio (% by weight) was 70/30, and A-1 per single hole from the spinneret was set to 0.00. 18 g / min, B-1 was discharged at a spinning speed of 0.08 g / min, and a melt-blown nonwoven fabric was manufactured using the processing conditions and manufacturing apparatus according to Example 1. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 7
A-2 as the non-adhesive component and B-1 as the adhesive component were used as a raw material resin for the melt blown nonwoven fabric. Heating and melting the non-adhesive component at 300 ° C. and the adhesive component at 230 ° C. with a heated body, setting the gear pump so that the ratio (weight%) of non-adhesive component / adhesive component is 30/70, spinning A melt blown non-woven fabric was manufactured by the processing conditions and manufacturing apparatus according to Example 1 except that A-2 was discharged from the die at a spinning speed of 0.02 g / min and B-1 at a spinning speed of 0.18 g / min. . Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 8
A-3 as the non-adhesive component and B-1 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. Heating and melting the non-adhesive component at 290 ° C and the adhesive component at 230 ° C with a heating element, setting the gear pump so that the ratio (weight%) of non-adhesive component / adhesive component is 30/70, spinning A melt blown non-woven fabric was manufactured by the processing conditions and manufacturing apparatus according to Example 1 except that A-3 was discharged from the die at a spinning speed of 0.03 g / min and B-1 was spun at 0.18 g / min. . Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 9
A-1 as the non-adhesive component and B-2 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. Heating and melting the non-adhesive component at 270 ° C. and the adhesive component at 230 ° C. with a heating element, setting the gear pump so that the ratio (weight%) of non-adhesive component / adhesive component is 30/70, spinning A melt blown non-woven fabric was manufactured by the processing conditions and the manufacturing apparatus according to Example 1 except that A-1 was discharged from the die at a spinning speed of 0.01 g / min and B-2 was discharged at a spinning speed of 0.18 g / min. . Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 10
A-1 as the non-adhesive component and B-3 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. A melt-blown nonwoven fabric was produced using the processing conditions and production apparatus according to Example 1. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 11
A-1 as the non-adhesive component and B-4 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. A melt-blown nonwoven fabric was produced using the processing conditions and production apparatus according to Example 1. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 12
A-1 as the non-adhesive component and B-5 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. A melt-blown nonwoven fabric was produced using the processing conditions and production apparatus according to Example 1. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 13
A-1 as the non-adhesive component and B-1 as the adhesive component were used as the raw resin for the spunbond nonwoven fabric. Two extruders with screw (40 mm diameter), heating element, and gear pump, mixed fiber type spinneret (hole diameter 0.4 mm, 120 holes), air soccer, charging method spreader, collection with polyester net A spunbonded nonwoven fabric was produced using an apparatus comprising a conveyor, a point bond processing machine and a winder. The non-adhesive component and the adhesive component are respectively charged into each extruder, and the raw resin is heated and melted at 270 ° C. and the adhesive component at 230 ° C. with a heating element. The gear pump is set so that the adhesive component is 30% by weight / 70% by weight, and A-1 is 0.17 g / min and B-1 is 0.4 g / min per single hole from the spinneret. The discharged fibers were introduced into an air soccer ball, and immediately after opening with a charging method spreader, the fibers were collected on a collecting conveyor. The air pressure of the air soccer was adjusted to be 196 kPa (gauge pressure). The web on the collection conveyor is put into a point bond processing machine (crimp area ratio 15%) heated to an upper and lower roll temperature of 90 ° C., and the processed non-woven fabric is wound into a roll with a winder, and the basis weight is 60 g / m. ² spunbond nonwoven fabric was obtained. The physical property measurement results of the obtained spunbonded nonwoven fabric are shown in Table 1. This spunbond nonwoven fabric exhibited good fit and antiblocking properties.

Reference example 2
A-1 as the non-adhesive component and B-6 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. A melt blown non-woven fabric was produced using the processing conditions and production apparatus according to Example 6 except that the adhesive resin was heated and melted at 220 ° C. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Reference example 3
A-1 as the non-adhesive component and B-7 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. A melt-blown nonwoven fabric was produced using the processing conditions and production apparatus according to Example 6 except that the adhesive resin was heated and melted at 200 ° C. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Reference example 4
A-1 as the non-adhesive component and B-8 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. A melt-blown nonwoven fabric was produced using the processing conditions and production apparatus according to Example 6 except that the adhesive resin was heated and melted at 200 ° C. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Example 17
A-4 as the non-adhesive component and B-1 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. A melt-blown nonwoven fabric was produced using the processing conditions and production apparatus according to Example 1 except that the non-adhesive resin was heated and melted at 220 ° C. Table 1 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This meltblown nonwoven fabric showed good fit and antiblocking properties.

Comparative Example 1
A-1 as the non-adhesive component and B-1 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. The gear pump was set so that the ratio (weight%) of non-adhesive component / adhesive component was 1/99, and A-1 was 0.003 g / min and B-1 was 0.252 g per single hole from the spinneret. A melt-blown nonwoven fabric was produced using the processing conditions and production apparatus according to Example 1 except that the material was discharged at a spinning speed of / min and the conveyor speed was 2 m / min. Table 2 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This melt blown nonwoven fabric had a non-adhesive component of 1% by weight, so the peel strength was as high as 3.5 N / 25 mm and was not satisfactory.

Comparative Example 2
A-1 as the non-adhesive component and B-1 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. Before introducing into the extruder, the resins A-1 and B-2 are premixed (blended) so that the ratio (wt%) of non-adhesive component / adhesive component is 10/90 (wt%). A melt-blown nonwoven fabric was produced by the processing conditions and production apparatus according to Example 1 except that the melt was melted at 0 ° C. and discharged at a spinning speed of 0.13 g / min per single hole. Table 2 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This melt blown nonwoven fabric had a non-adhesive component of 10% by weight, but was not a satisfactory performance because the resin was mixed and the peel strength was as high as 3.5 N / 25 mm.

Comparative Example 3
Only the adhesive component B-1 was used as the raw material resin, and a melt-blown nonwoven fabric was produced using the processing conditions and production equipment according to Comparative Example 2. Table 2 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. Since this melt blown nonwoven fabric does not contain a non-adhesive component, the peel strength was not as satisfactory as 4 N / 25 mm.

Comparative Example 4
A-1 as the non-adhesive component and B-1 as the adhesive component were used as the raw material resin for the melt blown nonwoven fabric. The gear pump was set so that the ratio (weight%) of non-adhesive component / adhesive component was 80/20, and A-1 was 0.20 g / min per single hole from the spinneret, and B-1 was 0.05 g. A melt blown non-woven fabric was produced using the processing conditions and production apparatus according to Comparative Example 1 except that the material was discharged at a spinning speed of / min. Table 2 shows the measurement results of the physical properties of the obtained meltblown nonwoven fabric. This melt blown nonwoven fabric had a sticking component of 20% by weight, so the coefficient of static friction was as low as 0.36 and was not satisfactory.

Claims (9)

A long-fiber nonwoven fabric with adhesive fibers and non-adhesive fibers have been obtained by using the non-tacky component is not sticky is formed by commingled in a ratio of 40/60 wt% 95/5% by weight, The cross-sectional shape of the adhesive fiber and the non-adhesive fiber constituting the nonwoven fabric is a round cross section, the average fiber diameter of the non-adhesive fiber (Cd: unit μm) and the average fiber diameter of the adhesive fiber (Dd: unit) μm) is a long fiber nonwoven fabric produced by a melt blow method or a spun bond method and satisfying the following characteristics : Cd + 4.3 ≦ Dd .
・ Static friction coefficient: 0.40 or more (25 ° C., relative humidity 65%)
・ Peel strength (when long-fiber nonwoven fabrics are overlapped): 3 N / 25 mm or less (25 ° C., relative humidity 65%) The average fiber diameter (Cd: unit μm) of the non-adhesive fiber and the average fiber diameter (Dd: unit μm) of the adhesive fiber are in a relationship of Cd + 4.3 ≦ Dd ≦ Cd + 12.0, Item 10. A long-fiber nonwoven fabric according to item 1. The average fiber diameter (Dd: unit micrometer) of adhesive fiber is 5-30 micrometers, The long-fiber nonwoven fabric of Claim 1 or Claim 2 characterized by the above-mentioned. Non average fiber diameter of the adhesive fibers (Cd) is 1 to 10 [mu] m, tacky average fiber diameter (Dd) be claim from 1 to 3 set forth in any one characterized by a 5~30μm fiber Long fiber nonwoven fabric. The long-fiber nonwoven fabric according to any one of claims 1 to 4 , wherein the adhesive fiber is composed of at least one selected from the group of adhesive components consisting of the following (1) to (5).
(1) Having at least one polymer block (A) mainly composed of an aromatic vinyl compound, having at least one polymer block (B) mainly composed of a conjugated diene compound, and derived from a conjugated diene Styrene block copolymer in which the double bond of the part is saturated 80% or more.
(2) A hydrogenated styrene diene copolymer in which a double bond in a conjugated diene-derived portion of a random copolymer of a conjugated diene compound and an aromatic vinyl compound is saturated by 80% or more.
(3) A copolymer of ethylene and an α-olefin having 3 to 10 carbon atoms or a copolymer of propylene and an α-olefin having 4 to 10 carbon atoms.
(4) An olefin polymer obtained by hydrogenating a conjugated diene polymer.
(5) Amorphous polypropylene. The non-adhesive fiber is composed of at least one selected from the group of non-adhesive components consisting of a polyolefin resin, a polyester resin, and a polyamide resin. The length according to any one of claims 1 to 5 , Fiber nonwoven fabric. And adhesive fibers and non-adhesive fibers is a long-fiber nonwoven fabric are combined filament 50/50 wt% 95/5% by weight, claim the long-fiber nonwoven fabric satisfies the following characteristics 1-6 The long fiber nonwoven fabric of any one of these.
・ Coefficient of static friction: 0.60 or more (25 ° C., relative humidity 65%)
・ Peel strength (when long-fiber nonwoven fabrics are overlapped): 2 N / 25 mm or less (25 ° C., relative humidity 65%) A laminated nonwoven fabric obtained by laminating at least one selected from films, nonwoven fabrics, webs, woven fabrics, knitted fabrics, papers, and fiber bundles other than the long fiber nonwoven fabrics on the long fiber nonwoven fabric according to any one of claims 1 to 7. . A fiber product using the long fiber nonwoven fabric according to any one of claims 1 to 7 or the laminated nonwoven fabric according to claim 8 .