JP2020190067A - Fiber processing agent and liquid permeable nonwoven fabric containing same - Google Patents

Abstract

To provide a fiber processing agent for improving rewetting properties and repeat liquid permeability of nonwoven fabric, a liquid permeable nonwoven fabric comprising fibers to which the fiber processing agent has been imparted, and a hygienic material using the liquid permeable nonwoven fabric.SOLUTION: Provided is a fiber processing agent that contains a component (A) represented by general formula (1): HO-(A1O)p-H, wherein A1 is an alkylene group having 2-4 carbons and p is an integer of 1-3, and a component (B), which is different from the component (A), represented by general formula (2): R1-O-(A2O)l-{C(O)R2C(O)-(A3O)m}n-R3 wherein R1, R2, R3, A2, A3, l, m, and n are specified in the claims. Also provided are a liquid permeable nonwoven fabric that contains the fiber processing agent, and a hygienic material that uses the liquid permeable nonwoven fabric.SELECTED DRAWING: None

Description

The present invention uses a fiber processing agent capable of imparting excellent wettability and repetitive water permeability to a non-woven fabric, a liquid-permeable non-woven fabric containing the fiber processing agent, and hygiene using the liquid-permeable non-woven fabric. Regarding materials.

In recent years, disposable diapers and sanitary napkins have become widespread, and the required quality and performance have been improved. For example, in disposable diapers, one wear does not always treat one excrement, and it is necessary to avoid discomfort due to several excretion, and excrement, sweat, body fluid, etc. are used as absorbers. In addition to the liquid permeability (initial water permeability) that allows quick transition, there is a strong demand for low wet return (wet return property) and durability of water permeability (repeated water permeability).

In order to meet these demands, for example, Patent Document 1 below proposes a polyolefin-based non-woven fabric to which a hydrophilic treatment agent containing a specific polyether and a polyether-modified silicone is added. However, although the polyolefin-based non-woven fabric described in Patent Document 1 has good initial water permeability, its wettability and repeated water permeability are still insufficient.

Japanese Unexamined Patent Publication No. 10-53955

In view of the above-mentioned problems of the prior art, the problem to be solved by the present invention is composed of a fiber processing agent capable of improving the wettability and repeated water permeability of the non-woven fabric, and fibers to which the fiber processing agent is applied. It is to provide a non-woven fabric.

As a result of diligent studies and repeated experiments in order to solve such a problem, the present inventors have conducted a specific component (A) represented by the general formula (1) and a specific component represented by the general formula (2) ( When used in combination with B), it maintains a balance between hydrophilicity and hydrophobicity, has both an affinity for non-woven fabrics and an affinity for body fluids such as urine, and is excellent in initial water permeability, rewetting property, and repeated water permeability. It has been found that a non-woven fabric can be provided, and the present invention has been completed.

That is, the present invention is as follows.
[1] The following general formula (1):
HO- (A ¹ O) _p- H ... General formula (1)
{In the formula, A ¹ is an alkylene group having 2 to 4 carbon atoms, and p is an integer of 1 to 3. }; And the following general formula (2) different from the component (A):
R ^{1 −} O − (A ² O) _l − {C (O) R ² C (O) − (A ³ O) _m } _{n −} R ³ … General formula (2)
{In the formula, R ¹ and R ³ are independent of each other, a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, and 2 to 24 carbon atoms. in alkenoyl group or -C ^(O) -R 4 -COOX ^{(wherein, R 4} is an alkylene group, an alkenylene group or an arylene group having 6 to 12 carbon atoms having 2 to 12 carbon atoms having 1 to 12 carbon atoms , And X is a hydrogen atom or an anion.), R ² is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and A. ² and ^{a 3,} independently of each other, is an alkylene group having 2 to 4 carbon atoms, l is an integer of 0 or 1 to 1000, m is an integer of 0 or 1 to 1000, and n Is an integer of 0 or 1-100. However, l + n is 1 or more. } Ingredients (B);
A fiber processing agent containing.
[2] The fiber processing agent according to the above [1], which further contains a polyether-modified silicone as the component (C).
[3] A liquid-permeable non-woven fabric having a net adhesion amount of 0.1 to 1.5% by weight of the fiber processing agent according to the above [1] or [2].
[4] The liquid-permeable non-woven fabric according to the above [3], wherein the liquid-permeable non-woven fabric is a non-woven fabric composed of thermoplastic fibers.
[5] The liquid-permeable nonwoven fabric according to [3] or [4] above, wherein the nonwoven fabric is composed of fibers having a fineness of 0.45 to 5.0 dtex.
[6] The liquid-permeable nonwoven fabric according to any one of [3] to [5] above, wherein the nonwoven fabric fibers are long-fiber nonwoven fabrics.
[7] The liquid-permeable nonwoven fabric according to any one of [3] to [6], wherein the liquid-permeable nonwoven fabric has a repeated water permeability of 70% or more at the fourth time.
[8] The liquid-permeable non-woven fabric according to any one of [3] to [7], wherein the liquid-permeable non-woven fabric has a wettability of 0.5 g or less.
[9] A sanitary material using the liquid-permeable nonwoven fabric according to any one of [3] to [8] above.

Since the non-woven fabric coated with the fiber processing agent according to the present invention is excellent in initial water permeability, rewetting property, and repeated water permeability, sanitary materials such as sanitary napkins, incontinence pads, disposable diapers and other top sheets and second sheets Also suitable for use as, for example, masks, body warmers, tape base materials, patch base materials, emergency adhesive plasters, packaging materials, wipe products, medical gowns, bandages, clothing, skin care sheets, etc. It can be preferably used.

Hereinafter, embodiments of the present invention will be described in detail.
The fiber processing agent of this embodiment has the following general formula (1):
HO- (A ¹ O) _p- H ... General formula (1)
{In the formula, A ¹ is an alkylene group having 2 to 4 carbon atoms, and p is an integer of 1 to 3. }; And the following general formula (2) different from the component (A):
R ^{1 −} O − (A ² O) _l − {C (O) R ² C (O) − (A ³ O) _m } _{n −} R ³ … General formula (2)
{In the formula, R ¹ and R ³ are independent of each other, a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, and 2 to 24 carbon atoms. in alkenoyl group or -C ^(O) -R 4 -COOX ^{(wherein, R 4} is an alkylene group, an alkenylene group or an arylene group having 6 to 12 carbon atoms having 2 to 12 carbon atoms having 1 to 12 carbon atoms , And X is a hydrogen atom or an anion.), R ² is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and A. ² and ^{a 3,} independently of each other, is an alkylene group having 2 to 4 carbon atoms, l is an integer of 0 or 1 to 1000, m is an integer of 0 or 1 to 1000, and n Is an integer of 0 or 1-100. However, l + n is 1 or more. } Ingredients (B);
Contains.

First, the component (A) represented by the general formula (1) will be described.
In the general formula (1), A ¹ is an alkylene group having 2 to 4 carbon atoms, and p is an integer of 1 to 3. A ¹ is an alkylene group having 2 to 4 carbon atoms, but an alkylene group having 3 to 4 carbon atoms is preferable, and an alkylene group having 3 carbon atoms is more preferable, from the viewpoint of rewetting property and repeated water permeability. p indicates the degree of polymerization of the alkyleneoxy group represented by (A ¹ O) and is an integer of 1 to 3, but 1 to 2 is preferable and 1 is more preferable from the viewpoint of rewetting property and repeated water permeability. preferable.

The component (A) is, for example, ethylene glycol, propylene glycol, butylene glycol or other alkylene glycol having 2 to 4 carbon atoms, and ethylene oxide, propylene oxide, butylene oxide or the like at 80 to 200 ° C. under a basic catalyst. It can be obtained by adding an alkylene oxide having 2 to 4 carbon atoms. As the base catalyst, for example, potassium hydroxide, sodium hydroxide and the like can be used. Commercially available ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, dipropylene glycol, dibutylene glycol, triethylene glycol, tripropylene glycol, tributylene glycol and the like may be used.

In the general formula (2), R ¹ and R ³ are independent of each other, a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, and a carbon number of carbon atoms. 2 to 24 alkenoyl groups or -C (O) -R ^4- COOX (where R ⁴ is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms or an arylene having 6 to 12 carbon atoms. It is a group, and X is a hydrogen atom or an anion.), And R ² is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms. Yes, A ² and A ³ are alkylene groups having 2 to 4 carbon atoms independently of each other, l is an integer of 0 or 1 to 1000, and m is an integer of 0 or 1 to 1000. n is an integer of 0 or 1-100. However, since l + n is 1 or more and the component (B) is a compound different from the component (A), the general formula (2) is the one excluding the general formula (1) in the present specification. To do.

From the viewpoint of rewetting property and repeated water permeability, ^one of R ¹ and R ³ is an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, or an alkanoyl group having 2 to 24 carbon atoms. It is preferably an alkalinyl group having 2 to 24 carbon atoms. In this case, from the same viewpoint, the number of carbon atoms is preferably 8 to 22, and more preferably 12 to 18. These alkyl groups, alkenyl groups, alkanoyl groups and alkenoyl groups may be linear or branched.

A ² and A ³ are alkylene groups having 2 to 4 carbon atoms independently of each other, but they are alkylene groups having 2 to 3 carbon atoms from the viewpoint of wettability, repeated water permeability, and processing bath stability. Is preferable.
From the same viewpoint, the polyalkyleneoxy groups represented by (A ² O) _l and (A ³ O) _m are an alkyleneoxy group having 2 carbon atoms (ethyleneoxy group) and an alkyleneoxy group having 3 carbon atoms. It is more preferable to use it in combination with (propyleneoxy group). In this case, the blending ratio of the ethyleneoxy group and the propyleneoxy group is a molar ratio, preferably ethyleneoxy group: propyleneoxy group = 5:95 to 50:50, more preferably 5:95 to 40:60, and 10:90. ~ 30: 70 is more preferable.

When the polyalkyleneoxy group represented by (A ² O) _l and (A ³ O) _m consists of a plurality of alkyleneoxy groups, the addition method may be block addition or random addition. l and m represent the degree of polymerization of the polyalkyleneoxy group represented by (A ² O) _l and (A ³ O) _m , respectively, _l represents an integer of 0 or 1 to 1000, and m represents 0. Alternatively, it represents an integer of 1 to 1000, and both l and m are preferably 10 to 200 from the viewpoint of rewetting property and repeated water permeability.
Further, the component (B) represented by the general formula (2) preferably has an average molecular weight of 100,000 or less from the viewpoint of ease of handling.

Examples of the component (B) include polyalkylene glycol (B1), polyoxyalkylene alkyl ether (B2), an alkyleneoxy group adduct of a divalent carboxylic acid (B3), and an esterified product (B4) thereof. be able to.
Polyalkyreglycol (B1) can be obtained, for example, by adding an alkylene oxide to a divalent alcohol. Further, the polyoxyalkylene alkyl ether (B2) can be obtained, for example, by adding an alkylene oxide to a monohydric alcohol. In this case, it may be carried out at 80 to 200 ° C. according to a conventional method, for example, using a base catalyst such as potassium hydroxide or sodium hydroxide. Examples of the divalent alcohol include ethylene glycol, propylene glycol, butylene glycol and the like. Examples of the monohydric alcohol include alcohols having 1 to 24 carbon atoms. Such alcohols may have branches or double bonds. As the alkylene oxide, an alkylene oxide having 2 to 4 carbon atoms such as ethylene oxide, propylene oxide, and butylene oxide can be used. When two or more alkylene oxides are used, the addition method may be block or random.

The alkyleneoxy group adduct (B3) of the divalent carboxylic acid can be obtained, for example, by adding an alkylene oxide to the divalent carboxylic acid or by reacting the divalent carboxylic acid with a polyalkylene glycol.
The esterified product (B4) may be used with, for example, the polyalkylene glycol (B1), the polyoxyalkylene alkyl ether (B2) obtained above, and / or the alkyleneoxy group adduct of the divalent carboxylic acid (B3) obtained above. It can be obtained by reacting a monovalent and / or divalent carboxylic acid at about 100 to 300 ° C. according to a conventional method. This reaction may be uncatalyzed or may use a catalyst such as sulfuric acid or p-toluenesulfonic acid.

Examples of the monovalent carboxylic acid include carboxylic acids having 1 to 24 carbon atoms. Such a carboxylic acid may have a branch or a double bond. Examples of the divalent carboxylic acid include aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid and phthalic acid, and aliphatic dicarboxylic acids such as 1,4-cyclohexanedicarboxylic acid, adipic acid, sebacic acid, maleic acid and succinic acid. Can be mentioned. Among these, an aliphatic dicarboxylic acid is preferably used, and more preferably adipic acid and succinic acid are used from the viewpoint of rewetting property and repeated water permeability.

From the viewpoint of rewetting property and repetitive water permeability, the compounding ratio of the component (A) and the component (B) in the fiber processing agent is a mass ratio, and the component (A): component (B) = 1: 99 to 90. : 10 is preferable, and 5:95 to 50:50 is more preferable. When the blending ratio of the component (A) is less than the lower limit value, the wettability tends to decrease, and when the blending ratio of the component (A) exceeds the upper limit value, the water permeability tends to decrease repeatedly.

In addition to the component (A) and the component (B), the fiber processing agent of the present embodiment may further contain a polyether-modified silicone as a component (C) for improving the initial water permeability (45-degree gradient flow length). it can. From the viewpoint of rewetting property and 45-degree gradient flow length, the blending ratio of the component (C) is preferably 5% by mass to 50% by mass, preferably 10% by mass, based on the total amount of the component (A) and the component (B). % To 30% by mass is more preferable.

As the component (C), a commercially available polyether-modified silicone can be used. For example, KF-351A, KF-352A, KF-353, KF-355A, KF-615A, KF-642, KF-6204, KF-6011, KF-6012, KF-6013 of Shin-Etsu Chemical Co., Ltd .; Dow Corning Co., Ltd., SH8700, SH8410, SH8400, L-7002, FZ-2104, FZ-77, L-7604; Momentive Performance Materials Japan GK, TSF4440, TSF4441, TSF4452, SF1188A, SF1288, Sisoft840, Silsoft860 , Sisoft 870, Sisoft 875, Sisoft 880, Sisoft 895 and the like can be used. The polyether-modified silicone used as the component (C) is not particularly limited, but one having an HLB of 5 to 15 is preferably used from the viewpoint of wettability, repeated water permeability, and 45-degree gradient flow length. Further, those having a viscosity of 50 to 10000 cSt are preferably used.

In addition to the component (A), the component (B), and the component (C), the fiber processing agent of the present embodiment may contain other compounds according to a desired purpose as long as the desired effect is not impaired. I do not care. For example, various surfactants as emulsifiers, softeners, smoothing agents, antistatic agents, and antifoaming agents can be appropriately contained.

The amount of the fiber processing agent adhered varies depending on the intended use. For example, for sanitary materials, the total amount of the essential components A and B is 0.05% by weight to 1.50 with respect to the non-woven fabric. It is preferable to apply it so that it adheres by weight. The amount of the fiber processing agent in which component A, component B, component C, and other compounds are mixed is 0.10% by weight to 1% by weight in terms of the pure content (pure amount) excluding the solvent that dilutes the processing agent such as water. The range of .50% by weight is preferable, and more preferably 0.15% by weight to 1.20% by weight. If it is less than 0.05% by weight, it is difficult to obtain satisfactory water permeability, while if it exceeds 1.50% by weight, skin irritation or rash may occur.

When applying the fiber processing agent to the non-woven fabric, it is also effective to directly apply each of the component (A), the component (B), and the component (C), or a mixture thereof to the non-woven fabric. However, it is preferable that the mixture is mixed in advance, diluted with a solvent such as water, and applied to the non-woven fabric as an aqueous solution of a fiber processing agent. The fiber processing agent of the present embodiment is obtained by mixing and homogenizing the component (A), the component (B), and in some cases, the component (C) and the above other compounds at a temperature preferably equal to or higher than the melting point. be able to.
As a method for applying the fiber processing agent to the non-woven fabric, known methods such as a dipping method, a spraying method, and a coating method can be adopted, and even if the fiber processing agent is applied and then dried using a drying means such as hot air or a hot roll. Good. Further, treatments such as corona discharge treatment and normal pressure plasma discharge treatment may be adopted as necessary before the application of the fiber processing agent.

It is preferable that the amount of the fibrous processing agent aqueous solution applied is small so as not to cause insufficient drying in the drying process due to the speeding up of the non-woven fabric manufacturing equipment. The coating amount (% by weight) on the non-woven fabric is preferably 1.0% by weight to 65% by weight, more preferably 3.0% by weight to 60% by weight, still more preferably 5.0 by weight in any of the above-mentioned application methods. It is from% by weight to 50% by weight. If it is less than 1.0% by weight, uniform coating cannot be obtained, while if it exceeds 65% by weight, the required drying capacity is increased, the equipment cost is increased, and insufficient drying may occur. The concentration of the fiber processing agent to be applied is preferably 0.05% by weight or more to 100% by weight.

The method of applying the fiber processing agent is generally a coating method. Examples of known coating methods include kiss coaters and dies, but it is preferable to use a gravure applying method because the fiber processing agent can be applied uniformly in the width direction of the non-woven fabric.
The handle of the gravure roll may be a lattice type or a pyramid type, but a diagonal line type in which the fiber processing agent does not easily remain on the cell bottom of the gravure is preferable. Cell volume ^is preferably ^{5cm 3 / m 2 ~40cm 3 /} m 2. If it is less than 5 cm ³ / m ² , the coating amount is too small, and it becomes difficult to uniformly coat the fiber processing agent. On the other hand, if it exceeds 40 cm ³ / m ² , problems such as insufficient drying in the drying process and adhesion spots of the fiber processing agent due to migration occur because the coating amount becomes too large.
The cell depth of the gravure roll is preferably 10 μm to 80 μm, and the interval is preferably designed to be the cell volume within the range of 80 mesh to 250 mesh.

The method for scraping the liquid on the surface of the gravure roll may be a doctor blade method using a general hardened steel plate doctor or a rubber roll method using a roll having a rubber surface. In the case of the doctor blade method, the pressing pressure is preferably 0.5 kg / cm to 1.0 kg / cm, more preferably 0.6 kg / cm to 0.8 kg / cm. In the case of the rubber roll method, the holding pressure is preferably 1.0 kg / cm or more and 5.0 kg / cm or less, more preferably 1.5 kg / cm or more and 3.5 kg / cm or less, within the range of rubber hardness of 60 ° or more and 80 ° or less. preferable. In either method, when the pressing pressure is within the above range, the pressing pressure is uniformly suppressed in the width direction of the non-woven fabric, so that the variation in the coating amount of the fiber processing agent is reduced.

Further, the spraying method is also preferable because it can be applied at high speed of the equipment, can be applied efficiently, and the thickness of the non-woven fabric can be easily maintained. As the spraying method, a known spraying method by air compression or a method of directly compressing and spraying an aqueous solution of a fiber processing agent may be used, but a rotor dampening method is preferable from the viewpoint of uniform application to a non-woven fabric. It is possible to apply even at high speed of the equipment by taking measures to prevent the scattering of the aqueous fiber processing agent solution at the time of application. The rotor dampening method is a method in which an aqueous solution of a fiber processing agent is supplied onto a rotating rotor and the aqueous solution of the fiber processing agent is sprayed by using the centrifugal force of the rotation of the rotor. In the rotor dampening method, the openings are limited so that the liquid particles of the fibrous processing agent aqueous solution, which is blown by the rotation of the rotor in the application direction, can be sprayed only on the non-woven fabric side to be applied, and can be uniformly applied in the width direction of the non-woven fabric. , It is possible to adjust the spray particle size by the rotor rotation speed.

In the case of the rotor dampening method, for example, a rotor having a diameter of 40 mm to 100 mm is selected, and the surface of the non-woven fabric to be applied and the center of the rotor are applied so that the aqueous fiber processing agent solution can be uniformly adhered in the width direction of the non-woven fabric to be applied. Set the distance to. It is preferable that half of the coating distribution range sprayed from the adjacent rotor overlaps. Further, it is preferable that the rotors are arranged at equal intervals in the range of 60 mm to 220 mm in the width direction and have two stages.

The point of uniformly applying the spray particles is to reach the inside of the non-woven fabric to be coated, and the diameter of the spray particles is preferably 10 μm to 200 μm, more preferably 30 μm to 70 μm. The surface tension of the aqueous fiber processing agent solution is important for forming the optimum spray particle size, and the spray particle size is calculated by the following formula:
Spray particle diameter (μm) = {100,000 x √ (surface tension (N / m))} / (rotor diameter (mm) x rotor rotation speed (rpm))
Is calculated by.

The temperature of the aqueous fiber processing agent solution in these coating methods is preferably 5 ° C. to 50 ° C., and more preferably 12 ° C. to 40 ° C. from the viewpoint of uniform dispersion and stability of the solution. The viscosity of the aqueous fiber processing agent solution is preferably 0.5 mPa · s to 50 mPa · s, and more preferably 0.8 mPa · s to 20 mPa · s from the viewpoint of easier uniform application. If the viscosity exceeds 50 mPa · s, the permeability of the aqueous fiber processing agent solution into the non-woven fabric is inferior, and uniform coating tends to be difficult.

A conventional drying method can be used for drying after the application of the fiber processing agent aqueous solution, and the drying method is not particularly limited, and a known method using convection heat transfer, conduction heat transfer, radiant heat transfer, etc. is adopted. Various drying methods can be used, such as a hot air circulation type, a hot air penetration type, an infrared heater type, a method of blowing hot air on both sides of a non-woven fabric, and a method of introducing into a heated gas.

The non-woven fabric of the present embodiment is made of a thermoplastic fiber, and may be a long-fiber non-woven fabric manufactured by a spunbond method or a short-fiber non-woven fabric manufactured by a card method, a wet fabrication method, or the like. However, from the viewpoints of strength, productivity, the surface structure of the non-woven fabric, and reduction of irritation to the skin, long fibers produced by the spunbond method are preferable as the fibers constituting the web. In the present specification, the long fiber means a fiber having a fiber length of 55 mm or more. Further, as the form of the thermoplastic fiber, not only the one having a round cross section but also the one having a deformed cross section fiber such as a flat or Y-shaped cross section, and a special form such as a hollow fiber or a crimped yarn can be used. It is not particularly limited.

The web may be a single layer, or may be laminated by spraying a web melt-spun by the melt-brow method (M) onto the web formed by the spunbond method (S). From the viewpoint of productivity, the laminated state may be laminated with SS, SSS, SSSS, or may be laminated like SM, SMS, SMMS, SMS. Further, each layer may be formed with a different basis weight, fiber diameter, and fiber form.

Examples of the method of joining the webs to be laminated include a method of joining using an adhesive, a method of bonding with a low melting point fiber or a composite fiber, a method of spraying a hot melt binder during web formation for fusion joining, a needle punch, a water flow, etc. Any method such as mechanical entanglement such as entanglement with hot air or joining with hot air may be used. However, from the viewpoint of high-speed productivity, it is preferable to join by partial thermocompression bonding. For example, it can be joined through a web between heated embossed / flat rolls that can provide joint points such as pinpoint, oval, diamond, and rectangular. The thermocompression bonding area ratio in the partial thermocompression bonding is preferably 5 to 40%, more preferably 5 to 25% from the viewpoint of strength retention and flexibility. Further, from the viewpoint of maintaining the bulk of the non-woven fabric and obtaining a cushioning texture that is preferred as a top sheet for sanitary materials, it is also preferable to join using hot air. The joining method using hot air is not particularly limited as long as it is a hot air circulation type, a hot air penetrating type, or a method of blowing hot air on both sides of a non-woven fabric.

Examples of the thermoplastic resin constituting the thermoplastic fiber of the present embodiment include polyolefin resins such as polyethylene, polypropylene and copolymerized polypropylene, and polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate and copolymerized polyester. , Nylon-6, Nylon-66, Polyester resin such as copolymerized nylon, and biodegradable resin such as polylactic acid, polybutylene succinate, and polyethylene succinate are not particularly limited. Polyolefin-based resins are preferable from the viewpoint of the texture of the non-woven fabric and many of the uses are disposable materials, and from the viewpoint of general purpose and convenience of recovery. Further, the fiber may be one type or a combination of two or more types of resins such as side-by-side and sheath core.

The average fineness of the fibers of the non-woven fabric is preferably 0.45 dtex to 10.0 dtex, more preferably 0.55 dtex to 8.0 dtex, and further preferably 0.86 dtex to 5.0 dtex. From the viewpoint of spinning stability, the average fineness is preferably 0.45 dtex or more, while from the viewpoint of the texture of the non-woven fabric used as a sanitary material, it is preferably 10.0 dtex or less.

Basis weight of the nonwoven fabric is preferably ^{8g / m 2 ~80g / m 2} , more preferably ^10g / ^{m 2 ~40g} / m 2 or less, more preferably from ^{10g / m 2 ~30g / m 2} . If the basis weight is 8 g / m ² or more, the strength of the non-woven fabric used for sanitary materials is satisfied, while if it is 80 g / m ² or less, the texture of the non-woven fabric used for sanitary materials is satisfied and the appearance is satisfied. It tends to be difficult to give a thick impression.

The non-woven fabric to which the fiber processing agent of the present embodiment is applied preferably has the following characteristics in order to absorb urine, body fluid, and the like without stagnation.

The repeated water permeability, which is an index of the water permeability of the nonwoven fabric of the present embodiment, is preferably 70% or more at the fourth time. Since the diaper is not changed every time urination is performed, it is necessary for the non-woven fabric used for the top sheet and the second sheet to pass body fluid such as urine without stagnation even for the second and third urination. There is. If the value of the fourth repeated water permeability is less than 70%, for example, when it is used for the top sheet or the second sheet of a disposable diaper, water cannot be sufficiently passed through the urine after the second time, which causes urine leakage. there is a possibility.

The wettability, which is an index of the water permeability of the nonwoven fabric of the present embodiment, is preferably 0.5 g or less. If the wettability value exceeds 0.5 g, for example, when used as a surface material for disposable diapers, when the surface material comes into contact with the skin after urination, it feels very moist and the feeling of use deteriorates. It may cause a rash. The lower the wettability, the better, but the value of 0.01 g or less is the lower limit of measurement.

The 45-degree gradient flow length, which is an index of the water permeability of the nonwoven fabric of the present embodiment, is preferably 30 mm or less, more preferably 25 mm or less. When the 45-degree gradient flow length exceeds 30 mm, for example, when used for a surface material such as a disposable diaper, the liquid flow on the surface increases and urine leaks easily.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. The evaluation method for each characteristic is as follows, and the physical properties of the obtained non-woven fabric are shown in Table 2 below. Hereinafter, the flow direction in the non-woven fabric manufacturing is referred to as the MD direction, and the width direction perpendicular to the MD direction is referred to as the CD direction.

1. 1. Average fineness (dtex)
A 1 cm square test piece was taken by dividing the non-woven fabric into 5 equal parts in the CD direction, and the diameter of each fiber was measured at 20 points each with a KEYENCE microscope VHX-700F, and the single yarn fineness was calculated from the average value.

2. 2. Non-woven fabric basis weight (g / m ² )
According to JIS-L1906, 5 test pieces of 20 cm in MD direction x 5 cm in CD direction were collected so that the collection positions were even in the CD direction of the non-woven fabric, the mass was measured, and the average value was calculated as the weight per unit area. It was converted and calculated as a scale (g / m ² ).

3. 3. Aqueous solution of fiber processing agent (% by weight)
From the consumption of the fiber processing agent aqueous solution for 1 hour of the fiber processing agent aqueous solution application processing, the following formula:
Fiber processing agent aqueous solution coating amount (% by weight) = Fiber processing agent aqueous solution consumption (g) / {Non-woven fabric grain (g / m ² ) x width (m) x processing speed (m / min) x 60 (min)} x 100
The value calculated by the above was taken as the coating amount (% by weight) of the aqueous fiber processing agent solution.

4. The amount of pure component adhered is calculated from the coating amount (% by weight) as follows:
The value calculated by the ratio of pure adhesion amount (% by weight) = coating amount (% by weight) × (aqueous solution concentration of fiber processing agent (% by weight)) ÷ 100 was defined as the net adhesion amount of the fiber processing agent (all components).
The net adhesion amount of the component (A) and the component (B) is calculated from the coating amount (% by weight) by the following formula:
Pure content adhesion amount (% by weight) of component (A) and component (B) = coating amount (% by weight) × (component concentration (% by weight) of component (A) of fiber processing agent aqueous solution + component of fiber processing agent aqueous solution) Component concentration (% by weight) of (B)) ÷ 100
Calculated by

5. Wetting property (g)
In order to keep the characteristics of the absorber constant as an absorber, a test cloth is placed on three specific filter papers (GRADE: 989 manufactured by Ahlstrоm). Furthermore, a plate (about 800 g) with a hole of 10 cm square and a diameter of 25 mm in the center is placed on it, and physiological saline (4.0 times the weight of the absorber) is dropped from the height of 25 mm above the center hole. And absorb it. Next, the plate on the test cloth is removed, and a 3.5 kg weight (10 cm square) is gently placed on the test cloth for 3 minutes to stabilize the distribution of the liquid in the absorber. Next, once the 3.5 kg weight is removed, two pre-weighed measuring filter papers (HOLLINGSWORTH & VOSE.CONPANY ERTMWWSSHEETS 12.5 cm square) are quickly placed on the test cloth, and the 3.5 kg weight is gently placed again. .. After 2 minutes, weigh the weight increase of the measuring filter paper. The value (g) of the increase was defined as the wettability.

6. Repeated water permeability (%)
As an absorber, 10 sheets of toilet paper (Hard Single 1R55m manufactured by Itoman Corporation) are stacked, and a test cloth (20 cm × 30 cm) is placed on the stack. Furthermore, a stainless steel plate with 10 holes with a diameter of 1.5 cm at equal intervals is placed on it, and 0.05 g of physiological saline is dropped from a height of 10 mm above the cloth located in each hole, and 3 After a lapse of minutes, drop again in the same manner. Count the number of holes (a) absorbed within 10 seconds after the fourth drop. This was tested at 40 sites of the same sample, and {((a) / (10 holes x 40 samples) x 100)} was defined as the fourth repeated water permeability (%). In addition, the number of holes (b) absorbed within 10 seconds after the fifth dropping is continuously counted, and {((b) / (10 holes x 40 samples) x 100). } Was set to the 5th repeated water permeability (%).

7.45 degree gradient flow length (mm)
Ten sheets of toilet paper (Hard Single 1R55m manufactured by Itoman Corporation) are stacked as an absorber on a plate inclined at 45 degrees, and a test cloth (20 cm square) is placed on it and set, and the height is 10 mm above the cloth. From the above, 0.05 g of physiological saline was added dropwise. The distance from the dropping position to the end of absorption was read. This measurement was arbitrarily performed at 20 points in the test cloth, and the average value was defined as a hydraulic conductivity of 45 degrees and a gradient flow length (mm).

<Manufacturing of non-woven fabric (1)>
A polypropylene (PP) resin with a melt flow rate (MFR) of 55 g / 10 minutes (measured at a temperature of 230 ° C. and a load of 2.16 kg according to JIS-K7210) is spanned so that the discharge rate is 0.88 g / min. By the bond method, the filaments were extruded at a spinning temperature of 220 ° C., and the filaments were extruded toward a mobile collection surface using a high-speed traction device using an air jet to prepare a long fiber web having an average fiber diameter of 2.8 dtex.
Next, the obtained long fiber web was subjected to flat roll and emboss roll at a vertical temperature of 135 ° C. and a pressure of 60 kg / cm (pattern specifications: diameter 0.425 mm circular, staggered arrangement, horizontal pitch 2.1 mm, vertical pitch 1.1 mm, The fibers were partially crimped to each other through a pressure-bonding area ratio of 6.3%), and the line speed was adjusted so that the target grain size was 18 g / m ² , to obtain a long-fiber non-woven fabric (1).

<Manufacturing of non-woven fabric (2)>
An ethylene-propylene random copolymer resin (r-PP) having an ethylene component content of 4.3 mol% and an MFR of 24 is spun-bonded to a discharge rate of 0.84 g / min / hоle, and the spinning temperature is 230. Extruded at ° C., the filaments were extruded toward a mobile collection surface using a high speed traction device with an air jet to produce a long fiber web with an average fiber diameter of 2.3 dtex. Next, the obtained long fiber web was partially crimped to each other using the same flat roll / embossed roll used in the production of the non-woven fabric (1) under the conditions of a vertical temperature of 135 ° C. and a pressure of 60 kg / cm. The line speed was adjusted so that the target grain size was 30 g / m ^2, and a long fiber non-woven fabric (2) was obtained.

<Manufacturing of non-woven fabric (3)>
Polypropylene (PP) with an MFR of 38 g / 10 min is extruded at a spinning temperature of 240 ° C. and a discharge rate of 0.80 g / min / hоle using a spinneret with a C-shaped irregular nozzle, and this filament group is extruded by an air jet. A high-speed airflow traction device was used to extrude towards the mobile collection surface to obtain a long fiber web with an average fiber diameter of 2.5 dtex.
Next, the obtained long fiber web was set to a temperature of 135 ° C. and a pressure of 60 kg / cm, and a flat roll and an embossed roll (pattern specifications: diameter 1.00 mm circular, staggered arrangement, horizontal pitch 4.4 mm, vertical pitch 4.4 mm, The fibers were partially adhered to each other through a pressure-bonding area ratio of 7.9%) to obtain a long-fiber non-woven fabric (3) having a grain size of 15 g / m ² and a number of crimps of 28 / inch.

<Manufacturing of non-woven fabric (4)>
The first component is polypropylene (PP) resin with an MFR of 55 g / 10 minutes (measured at a temperature of 230 ° C. and a load of 2.16 kg according to JIS-K7210), and a melt index (MI) of 26 g / 10 minutes (JIS-K7210). (Measured at a temperature of 190 ° C. and a load of 2.16 kg) using high-density polyethylene (HDPE) resin as the second component, the discharge rate of the first component is 0.54 g / min · hоle, and the discharge rate of the second component is Fibers with a total discharge rate of 0.8 g / min hоle and a ratio of the first component to the second component of about 1/2 are extruded by the spunbond method at a spinning temperature of 220 ° C. An eccentric sheath-core type composite long fiber web having an average fiber diameter of 2.0 dtex was prepared by extruding this filament group toward a mobile collection surface using a high-speed airflow traction device using an air jet.
Next, the obtained long fiber web was partially crimped to each other using the same flat roll / embossed roll used in the production of the non-woven fabric (3) under the conditions of a vertical temperature of 135 ° C. and a pressure of 60 kg / cm. The line speed was adjusted so that the target grain size was 15 g / m ^2, and a long fiber non-woven fabric (4) was obtained.

<Manufacturing of non-woven fabric (5)>
Polypropylene (PP) resin with an MFR of 55 g / 10 minutes (measured at a temperature of 230 ° C. and a load of 2.16 kg according to JIS-K7210) is used as the first component, and MI is 26 g / 10 minutes (measured according to JIS-K7210). High-density polyethylene (HDPE) resin (measured at 190 ° C. and a load of 2.16 kg) is used as the second component, and the discharge rate of the first component is 0.4 g / min · hоle, and the discharge rate of the second component is 0.4 g / min. Fibers having a total discharge rate of 0.8 g / min / hоle and a ratio of the first component to the second component being 1/1 are extruded by the spunbond method at a spinning temperature of 220 ° C. to extrude this filament group. An eccentric sheath-core composite length fiber web with an average fiber diameter of 2.3 dtex was prepared by using a high-density air jet traction device with an air jet toward the mobile collection surface.
Next, the obtained eccentric sheath-core type composite long fiber non-woven fabric was used as a flat roll and an embossed roll at 100 ° C. (pattern specifications: circular diameter 1.00 mm, staggered arrangement, horizontal pitch 4.4 mm, vertical pitch 4.4 mm, through during the crimping area ratio 7.9%) was provisionally bonded to fibers, then a hot air temperature of 142 ° C., the fibers were bonded by hot air hot air velocity 0.7 m / s, the basis weight 25 g / ^{m 2,} wound A composite long fiber non-woven fabric (5) having a reduced number of 17 pieces / inch was obtained.

<Manufacturing of non-woven fabric (6)>
Using the same polymer used in the production of non-woven fabric (5), the discharge rate of the first component (polypropylene) is 0.40 g / min · hоle, and the discharge rate of the second component (polyethylene) is 0.40 g. Fibers having a total discharge rate of 0.8 g / min / hоle and a ratio of the first component to the second component of 1: 1 were extruded by a spunbond method at a spinning temperature of 220 ° C. The extruded filament is stretched in the traction zone using the suction force of the mobile collection surface, and then deposited on the mobile collection surface through a diffuser to form a side-by-side composite long fiber web with an average fiber diameter of 3.0 dtex. Was prepared. The obtained side-by-side type composite long fiber web is bonded to each other by hot air having a hot air temperature of 142 ° C. and a hot air speed of 0.7 m / s, and a composite long fiber non-woven fabric having a basis weight of 15 g / m ² and a number of crimps of 15 / inch ( 6) was obtained.

<Manufacturing of non-woven fabric (7)>
Polypropylene (PP) resin with MFR of 36 g / 10 minutes (measured at 230 ° C. and a load of 2.16 kg according to JIS-K7210) is used as the first component, and MI is 17 g / 10 minutes (measured according to JIS-K7210). The second component is a linear high-density linear polyethylene (LLDPE) resin (measured at 190 ° C. and a load of 2.16 kg), the discharge rate of the first component is 0.50 g / min · hоle, and the discharge rate of the second component. Is 0.25 g / min · hоle, the total discharge amount is 0.75 g / min · hоle, and the fiber in which the ratio of the first component to the second component is 2/1 is extruded at a spinning temperature of 220 ° C. by the spunbond method. , This filament group was extruded toward a mobile collection surface using a high-speed airflow traction device using an air jet to prepare an eccentric sheath-core type composite long fiber web having an average fiber diameter of 2.8 dtex.
Next, the fibers were adhered to each other by hot air having a hot air temperature of 120 ° C. and a hot air velocity of 1.0 m / s to obtain a composite long-fiber non-woven fabric (7) having a basis weight of 20 g / m ² and a number of crimps of 25 / inch.

<Manufacturing of non-woven fabric (8)>
High-density polyethylene (HDPE) containing polyethylene terephthalate (PET) resin with a solution viscosity of ηsp / c0.75 as the first component and MI of 26 g / 10 minutes (measured at a temperature of 190 ° C. and a load of 2.16 kg according to JIS-K7210). ) With resin as the second component, the discharge rate of the first component is 0.50 g / min / hоle, the discharge rate of the second component is 0.25 g / min / hоle, and the total discharge rate is 0.75 g / min / hоle. A fiber having a ratio of the first component to the second component of 2: 1 was extruded by a spunbond method at a spinning temperature of 220 ° C. The extruded filament is stretched in the traction zone by utilizing the suction force of the moving collection surface, and then deposited on the moving collection surface through a diffuser to form an eccentric sheath-core type composite having an average fiber diameter of 4.0 dtex. A long fiber web was prepared. The obtained eccentric sheath-core type composite long fiber web is bonded to each other by hot air having a hot air temperature of 130 ° C. and a hot air velocity of 0.7 m / s, and has a basis weight of 30 g / m ² and a composite length of 13 crimps / inch. A fibrous nonwoven fabric (8) was obtained.

<Ingredient (A)>
Component A-1: Propylene glycol manufactured by ADEKA CORPORATION was used.
Component A-2: Dipropylene glycol manufactured by ADEKA CORPORATION was used.

<Ingredient (B)>
Component B-1: 30 mol of propylene oxide and then 8 mol of ethylene oxide were added to propylene glycol according to a conventional method to obtain polyoxyalkylene glycol. Next, 1 mol of this polyoxyalkylene glycol was reacted with 1.5 mol of lauric acid to obtain component B-1. In the general formula (2), the component B-1 has n of 0, R ¹ and R ³ are alkenoyl groups having 11 carbon atoms, and (A ² O) _l is total at both ends of 31 mol of propylene oxide. A compound in which 8 mol of ethylene oxide is added (l is 39) and an alkenoyl group in which n is 0 and either R ¹ or R ³ has 11 carbon atoms in the general formula (2). , (A ² O) _l is a 1: 1 mixture of a compound (l is 39) in which a total of 8 mol of ethylene oxide is added to both ends of 31 mol of propylene oxide.

Component B-2: To propylene glycol, 50 mol of propylene oxide and then 15 mol of ethylene oxide were added according to a conventional method to obtain polyoxyalkylene glycol. Then, 1 mol of this polyoxyalkylene glycol was reacted with 1.8 mol of stearic acid to obtain component B-2. In the general formula (2), the component B-2 has n of 0, R ¹ and R ³ are alkenoyl groups having 17 carbon atoms, and (A ² O) _l is total at both ends of 51 mol of propylene oxide. A compound in which 15 mol of ethylene oxide is added (l is 66) and an alkenoyl group in which n is 0 and either R ¹ or R ³ has 17 carbon atoms in the general formula (2). , (A ² O) _l is a 9: 1 mixture of a compound (l is 66) in which a total of 15 mol of ethylene oxide is added to both ends of 51 mol of propylene oxide.

Component B-3: 30 mol of propylene oxide and then 8 mol of ethylene oxide were added to propylene glycol according to a conventional method to obtain polyoxyalkylene glycol. Then, 3 mol of this polyoxyalkylene glycol was reacted with 2 mol of adipic acid. Next, this reaction product was reacted with 1 mol of lauric acid to obtain component B-3.
In the general formula (2), component B-3 is an alkenoyl group having 11 carbon atoms in either R ¹ or R ³ , and (A ² O) _l is a total of 8 mol at both ends of 31 mol of propylene oxide. Ethylene oxide is added to the group (l is 39), R ² is an alkylene group having 4 carbon atoms, and (A ³ O) _m is a total of 8 mol of ethylene oxide added to both ends of 31 mol of propylene oxide. It is a compound having a group (m of 39) and n of 2.

Component B-4: 30 mol of propylene oxide and then 8 mol of ethylene oxide were added to propylene glycol according to a conventional method to obtain polyoxyalkylene glycol. Next, 5 mol of this polyoxyalkylene glycol was reacted with 4 mol of adipic acid to obtain component B-4. In component B-4, in the general formula (2), R ¹ and R ³ are hydrogen, and (A ² O) _l is a group (l) in which a total of 8 mol of ethylene oxide is added to both ends of 31 mol of propylene oxide. Is 39), R ² is an alkylene group having 4 carbon atoms, and (A ³ O) _m is a group (m is 39) in which a total of 8 mol of ethylene oxide is added to both ends of 31 mol of propylene oxide. , N is 4.

Component B-5: To lauryl alcohol, 24 mol of propylene oxide was added according to a conventional method to obtain component B-5.
In the general formula (2), the component B-5 has an n of 0, R ¹ and R ³ are alkyl groups having 12 carbon atoms, and (A ² O) _l is a group of 24 mol of propylene oxide (l is). 24) is a compound.

<Component (C)>
As the polyether-modified silicone, KF-6013 (manufactured by Shin-Etsu Chemical Co., Ltd., HLB = 10, viscosity 400 cSt) was used.

As glycerin, concentrated cosmetic concentrated glycerin manufactured by Miyoshi Oil & Fat Co., Ltd. was used.

<Polyether>
Addition polymerization of propylene oxide to water gave polypropylene glycol with an average degree of polymerization of 85. Next, ethylene oxide was addition-polymerized to the polypropylene glycol so as to have an average degree of polymerization of 25 to obtain a block polyether compound having an average molecular weight of about 6000 (propylene oxide) 85 and (ethylene oxide) 25.

<Glycerin condensate>
As the glycerin condensate, hexaglycerin monostearic acid ester (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., trade name: SY glycerin MS-5S) was used.

<Polyoxyalkylene castor oil ether>
As the polyoxyalkylene castor oil ether, polyoxyethylene (20) cured castor oil (manufactured by Nikko Chemicals Co., Ltd., trade name: NIKKOL HCO-20) was used.

[Example 1]
Component A-1: 25 parts by mass as component (A), component B-1: 55 parts by mass as component (B), and component (C): 20 parts by mass were mixed and uniform at 30 ° C. to make the fiber of Example 1 uniform. The processing agent (1) was obtained. The compounding ratio of each component is shown in Table 1 below.

[Examples 2 to 10, Comparative Examples 1 to 7]
Fiber processing of Examples 2 to 10 in the same manner as in Example 1 except that the compounding ratios of the component (A), the component (B), the component (C), and other components were changed as shown in Table 1 below. Agents (2) to (10) and fiber processing agents (Comparison 1) to (Comparison 7) of Comparative Examples 1 to 7 were obtained. The compounding ratio of each component is shown in Table 1 below.

[Example 11]
The 3 wt% aqueous solution of the fiber processing agent (1) of Example 1 was adjusted to a liquid temperature of 20 ° C. on the nonwoven fabric (1), and the above was carried out by a rotor dampening method so that the coating amount was 10 wt%. It was applied to a non-woven fabric, passed through an air-through dryer at 125 ° C., dried, and wound. The diameter of the rotor of the rotor dampening device used was 80 mm, and each rotor was arranged at intervals of 115 mm in the CD direction and the distance of the center of the rotor from the non-woven fabric to be applied was 180 mm. In addition, the rotor rotation speed was adjusted so that the sprayed particle size of the sprayed fiber processing agent was 35 μm. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 12]
The fiber processing agent (2) of Example 2 was applied to the nonwoven fabric (1) in the same manner as in Example 11. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 13]
The fiber processing agent (3) of Example 3 was applied to the nonwoven fabric (1) in the same manner as in Example 11. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 14]
In the non-woven fabric (1), a 5% by weight aqueous solution of the fiber processing agent (2) of Example 2 was adjusted at a liquid temperature of 20 ° C. so that the coating amount was 10% by weight. It was applied to the non-woven fabric in the same manner. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 15]
To the non-woven fabric (1), a 3.4% by weight aqueous solution of the fiber processing agent (4) of Example 4 was adjusted to a liquid temperature of 20 ° C., and a diagonal line pattern 120 mesh was used so that the coating amount was 30% by weight. It was applied using a gravure roll having a cell volume of 22 cm ³ / m ² , and then passed through a cylinder dryer at 120 ° C. to be dried and wound. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 16]
In the non-woven fabric (1), a 10% by weight aqueous solution of the fiber processing agent (5) of Example 5 was adjusted at a liquid temperature of 20 ° C. so that the coating amount was 10% by weight. It was applied to the non-woven fabric in the same manner. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 17]
In the production of the nonwoven fabric (1), the nonwoven fabric was obtained in the same manner except that the line speed was adjusted so that the basis weight was 8 g / m ² . The obtained non-woven fabric is subjected to corona treatment so that the wetting tension of the non-woven fabric is 35 to 39 mN / m, and then a 0.34 wt% aqueous solution of the fiber processing agent (4) of Example 4 is applied at a liquid temperature of 20 ° C. Others prepared were applied to the non-woven fabric in the same manner as in Example 15. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 18]
In the production of the nonwoven fabric (1), the nonwoven fabric was obtained in the same manner except that the line speed was adjusted so that the basis weight was 15 g / m ² . The obtained non-woven fabric was applied to the non-woven fabric in the same manner as in Example 15 except that a 1.67 wt% aqueous solution of the fiber processing agent (4) of Example 4 was adjusted at a liquid temperature of 20 ° C. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 19]
A 10% by weight aqueous solution of the fiber processing agent (4) of Example 4 was adjusted to the non-woven fabric (2) at a liquid temperature of 20 ° C. so that the coating amount was 10% by weight. It was applied to the non-woven fabric in the same manner. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 20]
A non-woven fabric was produced in the same manner as in Example 19 except that the fiber processing agent (6) was used. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 21]
In the production of the non-woven fabric (2), a non-woven fabric was obtained in the same manner except that the line speed was adjusted so that the basis weight was 18 g / m ² . The obtained non-woven fabric was applied to the non-woven fabric in the same manner as in Example 15 except that a 1.0% by weight aqueous solution of the fiber processing agent (7) of Example 7 was adjusted at a liquid temperature of 20 ° C. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 22]
In the production of the nonwoven fabric (1), the nonwoven fabric was obtained in the same manner except that the line speed was adjusted so that the basis weight was 15 g / m ² . Further, a non-woven fabric was produced in the same manner as in Example 21 except that the fiber processing agent (8) was used. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 23]
A 0.67% by weight aqueous solution of the fiber processing agent (7) was added to the nonwoven fabric (3) in the same manner as in Example 15 except that the liquid temperature was adjusted to 20 ° C. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 24]
A non-woven fabric was produced in the same manner as in Example 23 except that the non-woven fabric (4) was used. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 25]
A 2% by weight aqueous solution of the fiber processing agent (7) was adjusted to the non-woven fabric (5) at a liquid temperature of 20 ° C. so that the coating amount was 10% by weight, and the non-woven fabric was prepared in the same manner as in Example 11. Made. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 26]
A fiber non-woven fabric was produced in the same manner as in Example 25 except that the non-woven fabric (6) was used. The various measurement results of the obtained non-woven fabric are shown in Table 2-1 below.

[Example 27]
A 10% by weight aqueous solution of the fiber processing agent (4) was prepared on the non-woven fabric (7) at a liquid temperature of 20 ° C. so that the coating amount was 5% by weight, and the non-woven fabric was prepared in the same manner as in Example 11. Made. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Example 28]
A 6% by weight aqueous solution of the fiber processing agent (4) was prepared on the non-woven fabric (8) at a liquid temperature of 20 ° C. so that the coating amount was 5% by weight, and the non-woven fabric was prepared in the same manner as in Example 11. Made. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Example 29]
A 0.67% by weight aqueous solution of the fiber processing agent (4) was prepared on the non-woven fabric (5) at a liquid temperature of 20 ° C., and then applied using a kiss roll (φ400 mm) so that the coating amount was 30% by weight. , It was dried by passing it through a cylinder dryer at 130 ° C. and wound up. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Example 30]
A 5% by weight aqueous solution of the fiber processing agent (9) was prepared in the non-woven fabric (1) at a liquid temperature of 20 ° C. so that the coating amount was 10% by weight, and the non-woven fabric was the same as in Example 11. Was produced. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Example 31]
In the non-woven fabric (1), a 3% by weight aqueous solution of the fiber processing agent (10) of Example 10 was prepared at a liquid temperature of 20 ° C. so that the coating amount was 10% by weight. A non-woven fabric was produced in the same manner. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Comparative Example 11]
The fiber processing agent of Comparative Example 1 (Comparison (1)) was applied to the nonwoven fabric (1) in the same manner as in Example 14. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Comparative Example 12]
A non-woven fabric was obtained in the same manner as in Comparative Example 11 except that the fiber processing agent of Comparative Example 2 (Comparison (2)) was used. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Comparative Example 13]
A non-woven fabric was obtained in the same manner as in Comparative Example 11 except that the fiber processing agent of Comparative Example 3 (Comparison (3)) was used. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Comparative Example 14]
A 1.67 wt% aqueous solution of the fiber processing agent (Comparative (4)) of Comparative Example 4 was applied to the nonwoven fabric (1) in the same manner as in Example 15 except that the liquid temperature was 20 ° C. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Comparative Example 15]
A 1.0% by weight aqueous solution of the fiber processing agent (Comparative (5)) of Comparative Example 5 was applied to the nonwoven fabric (1) in the same manner as in Example 15 except that the liquid temperature was 20 ° C. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Comparative Example 16]
A 1.67 wt% aqueous solution of the fiber processing agent of Comparative Example 6 (Comparative (6)) was applied to the nonwoven fabric (1) in the same manner as in Example 15 except that the liquid temperature was 20 ° C. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

[Comparative Example 17]
A non-woven fabric was produced in the same manner as in Example 11 except that the fiber processing agent of Comparative Example 7 (Comparison (7)) was used. The various measurement results of the obtained non-woven fabric are shown in Table 2-2 below.

Since the non-woven fabric coated with the fiber processing agent according to the present invention is excellent in initial water permeability, rewetting property, and repeated water permeability, sanitary materials such as sanitary napkins, incontinence pads, disposable diapers and other top sheets and second sheets Also suitable for, for example, masks, body warmers, tape base materials, patch base materials, emergency adhesive plasters, packaging materials, wipe products, medical gowns, bandages, clothing, skin care sheets, etc. It is available for.

Claims (9)

The following general formula (1):
HO- (A ¹ O) _p- H ... General formula (1)
{In the formula, A ¹ is an alkylene group having 2 to 4 carbon atoms, and p is an integer of 1 to 3. }; And the following general formula (2) different from the component (A):
R ^{1 −} O − (A ² O) _l − {C (O) R ² C (O) − (A ³ O) _m } _{n −} R ³ … General formula (2)
{In the formula, R ¹ and R ³ are independent of each other, a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkanoyl group having 2 to 24 carbon atoms, and 2 to 24 carbon atoms. in alkenoyl group or -C ^(O) -R 4 -COOX ^{(wherein, R 4} is an alkylene group, an alkenylene group or an arylene group having 6 to 12 carbon atoms having 2 to 12 carbon atoms having 1 to 12 carbon atoms , And X is a hydrogen atom or an anion.), R ² is an alkylene group having 1 to 12 carbon atoms, an alkenylene group having 2 to 12 carbon atoms, or an arylene group having 6 to 12 carbon atoms, and A. ² and ^{a 3} are each independently an alkylene group having 2 to 4 carbon atoms, l is an integer of 0 or 1 to 1000, m is an integer of 0 or 1 to 1000, and n is , 0 or an integer of 1-100. However, l + n is 1 or more. } Ingredients (B);
A fiber processing agent containing. The fiber processing agent according to claim 1, further containing a polyether-modified silicone as the component (C). A liquid-permeable non-woven fabric having a net adhesion amount of 0.1 to 1.5% by weight according to claim 1 or 2. The liquid-permeable nonwoven fabric according to claim 3, wherein the liquid-permeable nonwoven fabric is a nonwoven fabric composed of thermoplastic fibers. The liquid-permeable nonwoven fabric according to claim 3 or 4, wherein the nonwoven fabric is composed of fibers having a fineness of 0.45 to 5.0 dtex. The liquid-permeable non-woven fabric according to any one of claims 3 to 5, wherein the non-woven fabric is a long-fiber non-woven fabric. The liquid-permeable nonwoven fabric according to any one of claims 3 to 6, wherein the liquid-permeable nonwoven fabric has a repeated water permeability of 70% or more at the fourth time. The liquid-permeable nonwoven fabric according to any one of claims 3 to 7, wherein the liquid-permeable nonwoven fabric has a wettability of 0.5 g or less. A sanitary material using the liquid-permeable nonwoven fabric according to any one of claims 3 to 8.