JP3256170B2 - Nonwoven fabric for personal wipers and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal wiper having both flexibility and surface texture suitable for wet wipes such as wet tissues and disposable towels, or dry wipes for cleansing and sweating. The present invention relates to a nonwoven fabric for use and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, a nonwoven fabric obtained by subjecting a fibrous web made of a hydrophilic fiber such as rayon or a blend of a hydrophilic fiber and a heat-adhesive conjugate fiber to a high-pressure water-flow treatment or a nonwoven fabric has been used for wet tissues and disposable towels. -269
As disclosed in Japanese Patent Application Publication No. 199, a bulky sheet made of cellulose pulp, polyester-based latent crimped conjugate fiber, and heat-adhesive conjugate fiber has been proposed.

[0003]

However, these nonwoven fabrics have the following problems. For example, if it is a non-woven fabric obtained by subjecting a hydrophilic fiber such as rayon to high-pressure water flow treatment,
The texture is soft and rich in moisturizing properties, but the non-woven fabric is made of only hydrophilic fibers, and all the constituent fibers are wet. Give the person an unpleasant feel. In addition, since the fibers are only entangled with each other, the problem of fluffing and the like is liable to occur, and further, the bulkiness when wet and the strength of the nonwoven fabric are reduced. In order to solve these problems, heat-bonding conjugate fibers are mixed with hydrophilic fibers and the fibers are heat-bonded to each other, thereby suppressing fluffing and preventing the strength of the nonwoven fabric when wet from being reduced. It has a rough touch and cannot dispel discomfort to the user. Also,
As disclosed in Japanese Patent Application Laid-Open No. 3-269199, cellulose pulp mixed with a polyester latent crimped conjugate fiber has a small apparent density due to the expression of the latent crimped conjugate fiber, and irregularities are easily generated on the surface of the nonwoven fabric. Since the contact area is small, it is difficult to wipe and the cleaning property is poor. Furthermore, since fibers having a short fiber length such as cellulose pulp are used, the fibers are inferior in flexibility, and the strength of the nonwoven fabric is small, so that the nonwoven fabric is easily broken and gives anxiety to the user.

[0004] Therefore, a nonwoven fabric for personal wipers which has a soft texture and does not have a sticky feeling or a rough feeling on the surface texture has not yet been obtained. The present invention has been made in view of such circumstances,
An object of the present invention is to provide a nonwoven fabric for personal wipers, which has appropriate flexibility and good surface texture, and a method for producing the same.

[0005]

According to the present invention, there is provided a nonwoven fabric for personal wipers, comprising: a fibrous web comprising a hydrophilic fiber, a polyester fiber which is a polyethylene terephthalate fiber or a polybutylene terephthalate fiber; A non-woven fabric originally entangled, wherein hydrophilic fibers are arranged so as to be exposed to the human contact surface of the non-woven fabric at 40 to 60% by weight, and polyester fibers are 50 to 20% by weight over the entire non-woven fabric. 10-2 fibers
0% by weight.
It is characterized in that synthetic fibers are thermally bonded . With the configuration of such a nonwoven fabric, a nonwoven fabric for personal wipers having both moderate flexibility and good surface texture can be obtained. Further, the polyethylene terephthalate fiber or the polybutylene terephthalate fiber is coated with 50 to 2
By containing 0% by weight, it is possible to suppress the sag of the bulk at the time of moistening, thereby enhancing the flexibility and improving the surface texture.

The nonwoven fabric has an initial strength / elongation ratio of 1.
It is desirably 0 or less and / or 0.5 or less in a wet state. By adopting such an initial high elongation ratio, a nonwoven fabric for personal wipers which is highly flexible in any of a dry state and / or a wet state can be obtained.

It is desirable that the nonwoven fabric has a stiffness in the vertical and horizontal directions of 5.7 cm or less. By adopting such a stiffness, a nonwoven fabric for personal wipers which is rich in flexibility can be obtained.

The basis weight of the nonwoven fabric is desirably ²⁰ to 100 g / m ² . By adopting such a basis weight, a nonwoven fabric for personal wipers having both flexibility and surface texture can be obtained.

[0009]

It is desirable that the hydrophilic fibers in the nonwoven fabric are rayon fibers. By using rayon fibers, a nonwoven fabric having excellent moisturizing properties can be obtained.

The heat-adhering fiber in the nonwoven fabric has a melting point (T ₁
℃) 130 <T ₁ <first component a thermoplastic resin in the range of 300, 20 ° C. or more below the melting point of the first component, and a lower thermoplastic resin than the melting point of the polyester fibers as the second component, said It is desirable to use a core-sheath composite fiber or an eccentric core-sheath composite fiber in which one component is placed in a core and the second component is placed in a sheath. By using such fibers, thermal bonding between the fibers becomes easy, and fluffing of the nonwoven fabric can be suppressed.

The thermoplastic resin having a melting point (T ₁ ° C) in the range of 130 <T ₁ <300 is used as the first component, and the thermo-adhesive fiber in the nonwoven fabric is at least 20 ° C. lower than the melting point of the first component.
When a thermoplastic resin having a melting point lower than that of the polyester fiber is used as the second component, it is preferable that the two components are incompatible and a splittable conjugate fiber in which a part of each component is exposed on the fiber surface. By using such fibers, each component is easily divided into ultrafine fibers at the time of high-pressure water flow treatment, and the fibers are fixed to each other by heat bonding. Therefore, the fibers are rich in flexibility and can suppress fluffing of the nonwoven fabric. .

[0013] Production method of interpersonal friendly nonwoven fabric for wipers of the present invention, hydrophilic fibers 40-60 wt% of polyethylene te
Lephthalate fiber or polybutylene terephthalate
A fibrous web composed of 50 to 20% by weight of a polyester fiber and 10 to 20% by weight of a conjugate fiber is subjected to a high-pressure water flow treatment so that the fibers are three-dimensionally entangled. It is characterized in that the constituent fibers are heat-bonded by performing a heat treatment at a temperature that is high. According to such a production method, a nonwoven fabric having both moderate flexibility and good texture can be easily formed. Hereinafter, the contents of the present invention will be specifically described.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The nonwoven fabric for personal wipers of the present invention is a three-dimensional fiber web comprising hydrophilic fibers, polyester fibers such as polyethylene terephthalate fibers or polybutylene terephthalate fibers, and heat-adhesive fibers. Wherein the hydrophilic fibers are arranged such that 40 to 60% by weight of the hydrophilic fibers are exposed on the human contact surface of the nonwoven fabric, and 50 to 20% by weight of the polyester fibers and 50% by weight of the heat-adhesive fibers are applied to the entire nonwoven fabric. 10-20% by weight
Contained, only the heat-adhesive fiber melts to
It is of a configuration bonded by heat . Examples of the hydrophilic fibers used in the present invention include natural fibers such as cotton and regenerated fibers such as rayon and cupra. Among them, rayon fiber is preferably used from the viewpoint of handleability and versatility.

The hydrophilic fibers are arranged so as to be exposed at 40 to 60% by weight on the non-woven fabric contact surface.
If the content is less than 40% by weight, the nonwoven fabric is inferior in the moisturizing property on the human contact surface, and when used as a nonwoven fabric for wet tissue, the original wettability and wiping properties are impaired. If the content is more than 60% by weight, the non-woven fabric has a large water-adhering area on the human contact surface, which is not preferable because the surface feel is sticky.

In the present invention, it is preferable to blend a thermoplastic synthetic fiber having a hydrophobic and bulky feeling in order to improve the softness of texture and the surface texture, and among them, polyethylene terephthalate fiber or polybutyrate is preferred.
Select from polyester fiber which is lenterephthalate fiber
Devour. Other thermoplastic synthetic fibers, such as polyolefin-based fibers, have poor fiber entanglement when subjected to high-pressure water flow treatment,
It is not preferable because of the fluffing and the strong strength of the nonwoven fabric. Polyamide-based, for example, nylon fibers are not preferable because of hydrophilicity.

And polyethylene terephthalate fiber
Alternatively, polyester fibers, which are polybutylene terephthalate fibers, are contained in the entire nonwoven fabric in an amount of 50 to 20% by weight. The phrase "contained in the entire nonwoven fabric" means that the fibers are contained in a predetermined range when a part of the nonwoven fabric is taken out so as to completely enter the thickness direction. If the content of the polyester fiber is less than 20% by weight, the bulkiness in wet condition is large, and the surface texture in wet condition is unpleasant, which is not preferable. On the other hand, when it is more than 50% by weight, the moisturizing property is inferior, and when used as a nonwoven fabric for wet tissue, the original wettability is impaired.
Further, it is preferable that the polyester fiber is exposed to at least 20% by weight of the nonwoven fabric on the person contact surface. This is because the exposure of the polyester fibers partially exposes the hydrophobic component, and provides a moderately dry feel even when wet.

The heat-adhesive fiber used in the present invention has a potential for heat-adhesion, such as a single fiber, a composite fiber, and a modified cross-section fiber of which at least a part of the fiber surface is made of a thermoplastic resin having a melting point lower than that of the polyester fiber. It is not particularly limited as long as it has fibers, but conjugate fibers are preferable in view of processability.

The first component forming the conjugate fiber used in the present invention is preferably a thermoplastic resin having a melting point (T ₁ ° C) in the range of 130 <T ₁ <300, and such a resin is preferably polyethylene terephthalate. , Polyesters such as polybutylene terephthalate, polyamides such as nylon 6, nylon 6,6 and the like, homopolymers and copolymers of polyolefins such as polymethylpentene, polypropylene, ethylene-propylene copolymer and ethylene-vinyl alcohol copolymer. , A graft-modified product or a polymer alloy thereof can be conveniently used.

The second component forming the conjugate fiber is preferably a thermoplastic resin whose melting point is lower than that of the first component by 20 ° C. or more and lower than the melting point of the polyester fiber. Examples thereof include propylene copolymers such as propylene copolymer and ethylene-butene-1-propylene terpolymer, ethylene-vinyl acetate copolymer, and ethylene-methyl acrylate copolymer.

In the conjugate fiber of the present invention, these resins are combined to form a core-sheath composite fiber or an eccentric core-sheath composite fiber in which the first component is cored and the second component is disposed in a sheath, or both components are non-phased. A splittable composite fiber which is soluble and a part of each component is exposed on the fiber surface, or a heat splittable composite fiber which splits by heat shrinkage of one component is used. Polyethylene terephthalate / polyethylene, polyethylene terephthalate / polypropylene, polyethylene From terephthalate / ethylene-propylene copolymer, polypropylene / polyethylene, core-sheath composite fiber or eccentric core-sheath composite fiber composed of polypropylene / ethylene-propylene copolymer, polyethylene terephthalate / polypropylene, polyethylene terephthalate / nylon, polypropylene / polyethylene Become Split type composite fiber or a polyethylene terephthalate / ethylene, - thermal splittable conjugate fiber comprising a propylene copolymer is preferably used. For example, in consideration of productivity and dimensional stability of the nonwoven fabric, a core-sheath composite fiber is preferable, and in consideration of the volume of the nonwoven fabric, an eccentric core-sheath composite fiber is preferable. When flexibility is taken into account, it is particularly preferable to use splittable conjugate fibers or heat splittable conjugate fibers, since each component is easily split into ultrafine fibers during high-pressure water flow treatment.

Considering the spinnability, the composite ratio (volume ratio) of the two components in the composite fiber is such that the first component: the second component is 2
The ratio is preferably from 0:80 to 80:20.

The heat-bonding fiber is 10 to 10 in the entire nonwoven fabric.
It is preferred to contain 20% by weight. If the content is less than 10% by weight, fluffing on the surface of the nonwoven fabric cannot be suppressed, and the initial modulus is low and the dimensional stability is poor. If the content is more than 20% by weight, the texture becomes hard and the surface feel is rough, which is not preferable.

The fineness of the hydrophilic fiber, the polyester fiber and the heat-adhesive fiber in the above is not particularly limited. However, the fineness is preferably 0.7 to 3 deniers because the fineness increases the supple feeling and softens the texture. .

The basis weight of the nonwoven fabric of the present invention is 20 to 100 g /
m ² is preferred. In particular, when it is used for wet tissue applications, it is more preferably 30 to 50 g / m ² . If the basis weight is less than 20 g / m ² , the thickness becomes thin, the strength is weak, and not only the hand feeling is not obtained but also the formation becomes poor, which is not preferable. On the other hand, if it is more than 100 g / m ^2, it is necessary to increase the water pressure in order to form three-dimensional confounding in the high-pressure water flow treatment, the texture becomes hard, and the user becomes difficult to handle.

The initial strength and elongation ratio of the nonwoven fabric of the present invention is preferably 1.0 or less in a dry state and / or 0.5 or less in a wet state. More preferably, 0.01 to 0.85 in a dry state and 0.0 in a wet state.
1 to 0.45. Here, the dry state refers to a state in which water is retained within the range of the official moisture regain of the constituent fibers. In the wet state, water is forcibly applied to the entire nonwoven fabric, and the water content is 230 to 270 with respect to the weight of the nonwoven fabric.
% Status.

The initial strength and elongation ratio is in accordance with JIS L 1096, and a sample having a width of 5 cm and a length of 15 cm is gripped with a spacing of 10 cm.
And a tensile speed of 20 using a constant speed elongation type tensile tester.
Load-elongation curve obtained when elongating at cm / min (Fig. 1)
A tangent is drawn to the rise (initial) curve, and the slope is determined. The higher the initial strength / elongation ratio, the stronger the stiffness of the nonwoven fabric, and the lower the initial strength / elongation ratio, the weaker the stiffness of the nonwoven fabric. . In other words, when a person grips with weak force,
A non-woven fabric having a high stiffness feels hard, and a non-woven fabric having a low stiffness feels soft. If the initial high elongation ratio is greater than 1.0 in the dry state or greater than 0.5 in the wet state, it is not preferable because it feels hard.

The rigidity of the nonwoven fabric of the present invention in the vertical and horizontal directions is preferably 5.7 cm or less. More preferably, it is 5.0 cm or less. If the stiffness is greater than 5.7 cm, the user's hand feels hard and gives discomfort. In general, as the texture becomes harder, the stiffness increases, and when many fibers are arranged in the same direction, the stiffness in the direction tends to increase. For example, when a fibrous web is produced using a parallel card, the bending resistance increases in the vertical direction. The rigidity is appropriately changed according to the mixing ratio of the hydrophilic fiber, the polyester fiber, and the thermoadhesive fiber, the water pressure in the high-pressure water flow treatment, the processing speed, and the basis weight. For example, when the content of the polyester fiber is increased and the content of the heat-adhesive fiber is decreased, the flexibility is reduced. In addition, when the water pressure of the high-pressure water flow is reduced, the softness decreases.

Next, a method for producing the nonwoven fabric for personal wipers of the present invention will be described. The present invention relates to a hydrophilic fiber 40.
~ 60% by weight, polyethylene terephthalate fiber or
Is subjected to a high-pressure water flow treatment on a fibrous web composed of 50 to 20% by weight of a polyester fiber, which is a polybutylene terephthalate fiber , and 10 to 20% by weight of a heat-adhesive fiber, and the fibers are three-dimensionally entangled. It is obtained by performing a heat treatment at a temperature at which only the heat-adhesive fibers are melted and heat-bonding the constituent fibers. The fibrous web may be a single layered body using three kinds of fibers or a laminated body of two or more layers. For example, in the case of producing a single-layer body, three types of fibers may be mixed. In the case of a two-layer laminate, the ratio of the exposed rayon fiber can be changed such that the upper layer has 40% by weight of rayon fibers and the lower layer has 60% by weight of rayon fibers. Alternatively, in the case of a three-layer laminate, the amount of rayon fibers in the intermediate layer can be changed appropriately from 0 to 100% as long as the polyester fibers and the heat-adhesive fibers are contained in a predetermined amount in the entire nonwoven fabric. In consideration of productivity, a single-layered body in which three kinds of fibers are mixed is particularly preferable.

Then, after mixing the above three kinds of fibers at a predetermined ratio, a fiber web is produced. The form of the fibrous web is not particularly limited, and may be any of a parallel web, a cross web, a random web, and an air lay.

The produced fiber web is given a three-dimensional entanglement of the fibers by a high-pressure water flow treatment. The high-pressure water flow treatment may be performed by a conventionally well-known method,
The conditions may be set in accordance with the basis weight, rigidity and the like of the nonwoven fabric to be finally obtained. For example, 30-60 g of basis weight
/ M ² , a pore size of 0.05 to
A columnar water stream having a water pressure of 20 to 70 kg / cm ² may be sprayed from the front and back sides of the nonwoven fabric one to four times from nozzles provided with orifices of 0.5 mm at intervals of 0.5 to 1.5 mm.

After being entangled by the high-pressure water stream, it is dried to remove water. After or simultaneously with the drying, heat treatment is performed at a temperature at which only the heat-adhesive fibers are melted in order to heat-bond the constituent fibers with the heat-adhesive fibers. For example, when a composite fiber is used as the heat-adhesive fiber, the heat treatment is performed at a temperature equal to or higher than the melting point of the second component of the composite fiber and equal to or lower than the melting points of the first component of the composite fiber and the polyester fiber. By changing the heat treatment temperature within the above range, it is possible to adjust the flexibility and the texture of the obtained nonwoven fabric.

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the contents of the present invention will be described with reference to embodiments. The thickness, tensile strength, elongation at break, surface texture, softness, and rigidity of the obtained nonwoven fabric were measured by the following methods.

(Thickness) Thickness measuring machine (trade name: THICKNES
S GAUGE model CR-60A, manufactured by Daiei Kagaku Seiki Seisaku-Sho, Ltd.), with a load of 20 g applied per 1 cm ^{2 of} the sample.

(Tensile strength, elongation at break) JIS L 1
According to No. 096, a sample piece having a width of 5 cm and a length of 15 cm was gripped at an interval of 10 cm, and stretched at a tensile speed of 30 cm / min using a constant-speed stretching type tensile tester. Tensile strength and breaking elongation were used.

(Surface Texture) The nonwoven fabric in the dry state and the wet state was placed on a desk, and the back of the hand was slid on the surface of the nonwoven fabric. The evaluation was performed by six monitors, and the largest number of the grades evaluated by each person was regarded as the grade.

(Flexibility) The nonwoven fabric in wet condition was gripped by hand, and the tactile sensation at that time was evaluated in three stages shown in Table 1. The evaluation was performed by six monitors, and the largest number of the grades evaluated by each person was regarded as the grade.

[0038]

[Table 1]

(Rigid-softness) According to the rigid-flexible A method (45 ° cantilever method) of JIS L 1096, a test piece having a width of 2 cm and a length of 15 cm was placed in a vertical direction and a horizontal direction each for 5 times.
Samples were sampled, the length of movement of the test piece was measured using a cantilever type measuring instrument, and the average value in each of the vertical direction and the horizontal direction was obtained.

Example 1 A fineness of 1.5 was used as a hydrophilic fiber.
Denier, rayon fiber with a fiber length of 40 mm (manufactured by Daiwabo Rayon Co., Ltd.), polyester fiber with a fineness of 1.5
A denier polyethylene terephthalate fiber having a fiber length of 51 mm (manufactured by Teijin Limited) is used.
Fineness 2 with polyethylene terephthalate at ℃ as core component
A denier core-sheath type composite fiber having a fiber length of 51 mm (manufactured by Daiwa Spinning Co., Ltd.) was prepared.

50% by weight of rayon fiber, 30% by weight of polyester fiber and 20% by weight of heat-adhesive fiber.
The fibers were blended, and a fibrous web having a basis weight of 40 g / m ² was prepared using a semi-random card.

The fibrous web produced as described above was used with a pore diameter of 0.1 mm.
20 kg / cm ² , 40 kg water pressure on the surface side of the fiber web using a nozzle having orifices of 0.6 mm intervals
/ Cm ² and 45 kg / cm ² were jetted once each and the backside was jetted twice with a water pressure of 35 kg / cm ² to form the nonwoven fabric by entanglement of the web constituent fibers.

Next, the nonwoven fabric produced as described above is dried at 140 ° C. using a hot air penetration type drier, and the sheath component of the composite fiber in the nonwoven fabric is melted at the same temperature at the same temperature to perform the thermal bonding of the constituent fibers. Was. In the obtained nonwoven fabric, 50% by weight of the hydrophilic fiber was exposed on the contact surface of the nonwoven fabric with humans, and 30% by weight of the polyester fiber was contained in the entire nonwoven fabric.

Example 2 The fibers used were the same as in Example 1, and the mixing ratio of the fibers was 45% by weight of rayon fiber, 45% by weight of polyester fiber, and 10% by weight of heat-adhesive fiber.
Then, a fiber web having a basis weight of 40 g / m ² was prepared using a semi-random card.

Next, the fiber web prepared above was used in Example 1.
Using the same nozzle as above, water pressure 20
^{kg / cm 2, 40kg / cm} 2, 55kg / cm 2 of the columnar water stream once each respectively, the water pressure on the back side ^{40kg / cm 2, 55kg / cm} 2
Are sprayed once each, and then subjected to the same heat treatment as in Example 1 to expose 45% by weight of the hydrophilic fiber to the human contact surface of the nonwoven fabric and 45% by weight of the polyester fiber in the entire nonwoven fabric. Non-woven fabric.

Example 3 A rayon fiber and a polyester fiber similar to those used in Example 1 were used. As the composite fiber, the first component was polyethylene terephthalate having a melting point of 260 ° C., and the second component was polyethylene terephthalate having a melting point of 140 ° C. A heat-division conjugate fiber having a denier of 2 denier and a fiber length of 38 mm using an ethylene-propylene random copolymer was prepared.

Each of 50% by weight rayon fiber, 30% by weight polyester fiber, and 20% by weight composite fiber was mixed to produce a fiber web having a basis weight of 40 g / m ² using a semi-random card. Next, a hydroentanglement treatment was performed under the same water pressure conditions as in Example 2, and a heat treatment was performed to form a nonwoven fabric.

Table 2 shows the performance of the nonwoven fabrics produced in Examples 1 to 3 above.

[0049]

[Table 2]

Comparative Example 1 Fineness of 1.5 as hydrophilic fiber
70% by weight of rayon fiber (manufactured by Daiwabo Rayon Co., Ltd.) having a denier of 40 mm in fiber length, and 30% by weight of the same core-sheath type composite fiber as in Example 1 as thermal adhesive fiber,
A fiber web having a basis weight of 40 g / m ² was produced using a semi-random card.

Next, in the same manner as in Example 1, the fiber web produced above was coated with
By weight, the nonwoven fabric was exposed and the polyester fiber was not contained in the entire nonwoven fabric. Table 2 shows the performance of the nonwoven fabric produced in Comparative Example 1.

As shown in Examples 1 to 3, rayon fibers were mixed so as to expose 40 to 60% by weight on the person-contacting surface of the nonwoven fabric, and polyester fibers were mixed so as to be 50 to 20% by weight in the whole nonwoven fabric. By doing so, a non-woven fabric having a supple feeling without a sticky feeling in the surface texture and having a moderately smooth touch was obtained. In addition, by increasing the content of the polyester fiber as in Example 2, and by using the splittable conjugate fiber as the heat-adhesive fiber as in Example 3, the rigidity and the initial high elongation ratio are reduced, and the flexibility is increased. A nonwoven fabric having properties was obtained. On the other hand, in Comparative Example 1, although the elongation at break was small and the dimensional stability was excellent, satisfactory ones for the surface texture and flexibility which were the objects of the present invention could not be obtained.

[0053]

The nonwoven fabric for personal wipers of the present invention is
Exposure of hydrophilic fibers to the human-contact surface of the nonwoven fabric at a predetermined ratio, and bulkiness at the time of moisturizing by containing polyester fibers in the constituent fibers at a predetermined ratio,
Skin feel, flexibility and the like can be ensured. When such a nonwoven fabric is used as a wet type wipe such as a wet tissue or a disposable towel, a comfortable tactile sensation is given to the user without impairing the wiping property and the wet property. In addition, when used as a dry type wipe for cleansing, perspiration, and the like, it has both a liquid absorbing property and a surface texture, so that a comfortable touch is given to the user.

Further, by adding a predetermined proportion of the conjugate fiber to the constituent fibers to such an extent that the flexibility is not impaired, a nonwoven fabric having a high initial modulus, a low elongation and a good dimensional stability can be obtained. When each constituent fiber is mixed and used, by changing the mixing ratio of the fiber at that time, it becomes possible to easily adjust the flexibility, the texture, and the like.

[Brief description of the drawings]

FIG. 1 is a load-elongation curve used to calculate an initial strength-elongation ratio.

Claims (8)

(57) [Claims] 1. A nonwoven fabric obtained by three-dimensionally entangled a fibrous web composed of a hydrophilic fiber, a polyester fiber which is a polyethylene terephthalate fiber or a polybutylene terephthalate fiber, and a thermoadhesive fiber by a high-pressure water flow. The hydrophilic fibers are arranged so as to be exposed to the human contact surface at 40 to 60% by weight, and the polyester fibers are 50 to 20% by weight and the thermal adhesive fibers are 10 to 2% over the entire nonwoven fabric.
0% by weight.
A nonwoven fabric for personal wipers, wherein synthetic fibers are thermally bonded . 2. The nonwoven fabric for personal wipers according to claim 1, wherein the initial strength and elongation ratio of the nonwoven fabric is 1.0 or less in a dry state and / or 0.5 or less in a wet state. 3. The nonwoven fabric for personal wipers according to claim 1, wherein the nonwoven fabric has a rigidity in the vertical and horizontal directions of 5.7 cm or less. 4. The nonwoven fabric for personal wipers according to claim 1, wherein the basis weight of the nonwoven fabric is 20 to 100 g / m ^2. 5. The nonwoven fabric for a personal wiper according to claim 1, wherein the hydrophilic fiber is rayon fiber. 6. The heat-bondable fiber has a melting point (T ₁ ° C) of 130 <.
A thermoplastic resin having a range of T ₁ <300 is defined as a first component, and a thermoplastic resin having a melting point of at least 20 ° C. lower than the melting point of the first component and lower than the melting point of the polyester fiber is defined as a second component. The nonwoven fabric for personal wipers according to any one of claims 1 to 5, wherein the nonwoven fabric is a core-sheath composite fiber or an eccentric core-sheath composite fiber in which the second component is arranged in a sheath. 7. The heat-adhesive fiber has a melting point (T ₁ ° C) of 130 <.
When a thermoplastic resin having a range of T ₁ <300 is defined as a first component, and a thermoplastic resin having a melting point of at least 20 ° C. lower than the melting point of the first component and lower than the melting point of the polyester fiber is defined as a second component, both components are non-conductive. The nonwoven fabric for personal wipers according to any one of claims 1 to 5, wherein the nonwoven fabric is a splittable conjugate fiber which is compatible and a part of each component is exposed on the fiber surface. 8. Hydrophilic fibers 40 to 60% by weight, polyethylene terephthalate fibers or polybutylene terephthalate fibers 50 to 20% by weight of polyester fibers,
And a fiber web composed of 10 to 20% by weight of the heat-adhesive fiber is subjected to a high-pressure water flow treatment so that the fibers are three-dimensionally entangled, and then heat-treated at a temperature at which only the heat-adhesive fiber is melted. A method for producing a nonwoven fabric for personal wipers, wherein the fibers are thermally bonded.