JPH09209254A - Laminated nonwoven fabric and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a laminated nonwoven fabric., having a high peel strength without any rough feeling or skin irritation and suitable for a surface material of an absorbing article by fusing and integrating a composite spunbonded nonwoven fabric with a composite melt blown nonwoven fabric respectively having heat fusibility. SOLUTION: This laminated nonwoven fabric comprises a conjugated spunbonded nonwoven fabric laminated to a conjugated melt blown nonwoven fabric. The laminated nonwoven fabric is obtained by laminating a sheath-core conjugated filament nonwoven fabric, prepared by arranging high density polyethylene and polypropylene having >=10 deg.C difference in melting point in the sheath and core parts according to a spunbonding method and having 0.5-10de/f size to a conjugated melt blown nonwoven fabric, obtained by discharging a low-melting resin such as a propylene-ethylene-butene terpolymer and a high-melting resin such as polypropylene having >=10 deg.C difference in melting point onto a moving conveyor according to a melt blowing method, comprising ultrafine filaments having 0.1-10μm fiber diameter and containing <=10 polymer balls having >=0.1mm diameter/m<2> , heat-treating the laminated nonwoven fabric, fusing and integrating the resultant heat-treated laminate. The laminated nonwoven fabric has >=0.6kg/5cm transverse strength, <=0.6 uniformity index [maximum METSUKE (mass per unit area - minimum METSUKE]/average METSUKE} and >=6g/5cm peel strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated non-woven fabric and a method for producing the same, and more particularly to a multi-layered non-woven fabric in which a composite spunbonded non-woven fabric and a composite meltblown ultrafine fiber non-woven fabric are laminated. This non-woven fabric is suitably used as a material such as a surface material for absorbent articles such as disposable diapers and sanitary napkins.

[0002]

2. Description of the Related Art Spunbonded nonwoven fabrics have been used as a surface material for absorbent articles such as disposable diapers because they have no fluffing and are excellent in pulling resistance. However, it is difficult to reduce the fineness of the long fibers that make up this spunbond nonwoven fabric,
It is difficult to obtain a soft texture like that of a melt blown nonwoven fabric made of ultrafine fibers. Further, in the spunbonded non-woven fabric, there is a problem that as the fineness becomes finer, single fiber breakage occurs and large fineness yarns are mixed to further deteriorate the texture.

JP-A-54-134177 discloses a melt-blown non-woven fabric made of polypropylene ultrafine fibers, and JP-A-62-299501 and JP-A-3-75056 disclose a paper diaper using the melt-blown non-woven fabric as a surface material. ing. Such a melt-blown non-woven fabric has an advantage that it has a soft texture because it has a small fiber diameter, but on the other hand, it has drawbacks peculiar to the melt-blown non-woven fabric, that is, low strength of the non-woven fabric, fluffing, and easy hair removal. Moreover, polymer beads are likely to be generated during spinning, and there is a problem that it has a feeling of roughness and irritates the skin, and it is particularly unsuitable for disposable diapers for newborns. To improve the strength of the meltblown nonwoven fabric and to prevent hair removal, it is also possible to press it with a hot calendar roll or hot embossing roll, but conversely, it is necessary to process it under severe thermopressing conditions such as temperature and pressure. However, there is a problem that the apparent density of the nonwoven fabric is increased and the texture is deteriorated.

In addition, Japanese Examined Patent Publication No. 60-11148 and Japanese Patent Laid-Open No. 2-148.
112458 and JP-A-2-234967 disclose a laminated non-woven fabric obtained by laminating a spunbonded non-woven fabric and a melt blown non-woven fabric, and thermally fusing both layers with a hot calender roll, hot embossing roll or the like. Although this non-woven fabric has improved strength as compared with the conventional single-layer non-woven fabric, it is a product that uses regular fibers as long fibers constituting a spunbonded non-woven fabric, and has a fusion bonding property on the laminated surface, anti-pulling property, and peeling. There are issues such as low strength. Further, the product which is pressure-bonded with the hot embossing roll has the same severe thermo-compression bonding conditions as described above, and has problems that the apparent density is increased and the texture is deteriorated.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a laminated non-woven fabric having high strength, soft texture, good resistance to plucking, no feeling of roughness and skin irritation, and a method for producing the same. is there.

[0006]

In order to solve the above problems, the invention claimed in the present application is as follows. (1) A nonwoven fabric having a multi-layer structure in which a composite spunbonded nonwoven fabric and a composite meltblown ultrafine fiber nonwoven fabric having an average fiber diameter of 10 μm or less are laminated.
It is composed of a composite long fiber in which a low-melting point resin and a high-melting point resin having a melting point difference of 10 ° C. or more are combined, the low-melting point resin forms at least a part of the fiber surface, and heat fusion is performed via the low-melting point resin. The composite meltblown ultrafine fiber nonwoven fabric is composed of a low melting point resin and a high melting point resin having a melting point difference of 10 ° C. or more, and the low melting point resin forms at least a part of the fiber surface. The fibers are heat-bonded through the low melting point resin, and the composite spunbonded nonwoven fabric and the composite meltblown ultrafine fiber nonwoven fabric are the low melting point resin of the composite spunbonded nonwoven fabric and / or the composite meltblown ultrafine fiber. Laminated non-woven fabric that is integrated by fusing low melting point resin of non-woven fabric.

(2) The composite spunbonded nonwoven fabric has a fineness of 0.
5 to 10 d / f of composite long fibers, a composite melt-blown ultrafine fiber nonwoven fabric of ultrafine fibers having a fiber diameter of 0.1 to 10 μm, and a polymer ball having a fiber diameter of 0.1 mm or more is 1
0 / m ² or less, the apparent density of the nonwoven fabric is 0.02 to
Was 0.20 g / cm ^3, and next to the layered nonwoven fabric tenacity 0.6 kg / 5 cm or more, uniformity index of 0.6 or less, peel strength of both layers is 6 g / 5 cm or more, lamination of claim 1, wherein Non-woven fabric.

(3) An absorbent article in which the laminated nonwoven fabric according to claim 1 or 2 is used as at least one member. (4) A composite spunbonded nonwoven fabric and a composite meltblown ultrafine fiber nonwoven fabric having a two-layer structure or a composite meltblown ultrafine fiber nonwoven fabric is provided on at least one surface thereof.
The absorbent article according to claim 3, wherein a multilayer structure nonwoven fabric having three or more layers of a composite meltblown ultrafine fiber nonwoven fabric and a composite spunbonded nonwoven fabric is used.

(5) The melting point difference is 10 in the composite spun bond method.
The composite long fibers are spun so that the low-melting point resin and the high-melting point resin having a melting point of at least ℃ form at least a part of the fiber surface to form a web, or the web after spinning is subjected to a heat-sealing temperature. A non-woven fabric in which fibers are heat-sealed by the above, and a low melting point resin and a high melting point resin having an average fiber diameter of 10 μm or less and a melting point difference of 10 ° C. or more by a composite melt blow method Of the composite melt blown ultrafine fibers forming at least a part of, and a composite ultrafine fiber web without self-heat fusion during spinning, or a nonwoven fabric with self-heat fusion during spinning, or spinning After heating the web and the non-woven fabric with self-heat fusion above the heat fusion temperature,
A composite ultrafine fiber nonwoven fabric in which fibers are heat-sealed, and the composite spunbond web or heat-sealed nonwoven fabric and a composite meltblown ultrafine fiber web or a composite meltblown ultrafine fiber heat-sealed nonwoven fabric are laminated, and both layers are heat-sealed. A method for producing a laminated non-woven fabric, which comprises heating above a temperature.

6. The method for producing a laminated non-woven fabric according to claim 5, further comprising the step of (6) intertwining the webs or non-woven fabrics of both layers with a needle punch or a spunlace means before or after heating. (7) The method for producing a laminated non-woven fabric according to claim 5 or 6, wherein the heating is performed at a temperature higher than the heat fusion temperature of both layers by using a through-air type heater.

(8) The method for producing a laminated nonwoven fabric according to claim 5 or 6, wherein both layers are thermocompression bonded by using an embossing roll having a thermocompression bonding area of 5 to 25%. (9) The method for producing a laminated non-woven fabric according to claim 5 or 6, wherein the composite spun-bonded non-woven fabric and the composite melt-blown extra fine fiber non-woven fabric each have a uniformity index of 0.6 or less. (10) The method for producing a laminated non-woven fabric according to claim 5 or 6, wherein a hot air alternating jet type heater is used to heat both layers so that hot air is jetted alternately from the front surface side and the back surface side of the multi-layered nonwoven fabric.

The multi-layered non-woven fabric in the present invention may be a non-woven fabric having at least a two-layer structure in which a composite spun-bonded non-woven fabric and a composite melt blow microfiber non-woven fabric are laminated. If the application is a surface material or wiper of a disposable diaper, 2-3
In the case of layers, heat insulating materials and anti-condensation materials, those having 2 to 8 layers are used.

In the composite spunbonded nonwoven fabric used in the multi-layered nonwoven fabric of the present invention, at least two resin components having melting points different by 10 ° C. or more are spun by the composite spunbond method, and the intersections of the fibers are heat-sealed. It is a non-woven fabric. The composite spun bond method is a method in which a plurality of resin components are melt-extruded from a plurality of extruders, and a plurality of components are mixed from a spinneret for composite spinning so that the low melting point resin forms at least a part of the fiber surface. The fibers are spun, and the spun fibers are collected by an air flow towing device such as an air sucker, and the fibers are collected together with the air flow by a web collecting device such as a net conveyer, and then the web is heated with air or heated as necessary. A method for producing a heat-bonded nonwoven fabric by performing a treatment such as fusion using a heating device such as After mechanically drawing the long fibers after spinning, the long fibers are drawn by an air flow towing type device such as the air sucker, and the fibers are collected together with the air flow by a web collecting device such as a net conveyer, and heated and heated in the same manner as described above. A method for manufacturing a non-woven fabric by fusing or the like may be used. For these resin components, 2 to 4 kinds of resins can be practically used, and the difference between the highest melting point and the lowest melting point is 10 ° C. or more. But for most uses 2
Seeds are enough. Further, the non-woven fabric is particularly preferably a non-woven fabric having a fabric weight uniformity index, which will be described later, of 0.6 or less. The uniform areal weight can be achieved by setting the composite spunbond device, spinning conditions, etc. by trial and error.

The resin used in the present invention is not particularly limited as long as it is a spinnable thermoplastic resin. For example, polypropylene, high-density polyethylene, medium-density polyethylene, low-density polyethylene, linear low-density polyethylene, polyolefins such as binary copolymers of propylene and other α-olefins, polyamides, polyethylene terephthalate.
, Polybutylene terephthalate, low melting point polyester copolymerized with diol and terephthalic acid / isophthalic acid, polyesters such as polyester elastomers, fluororesins, mixtures of the above resins, and other spinnable resins, etc. Can be used.

The combination of resins in the composite spinning is, for example,
High density polyethylene / polypropylene, low density polyethylene / propylene / ethylene / butene-1 crystalline copolymer, high density polyethylene / polyethylene terephthalate
, Nylon-6 / nylon 66, low melting point polyester / polyethylene terephthalate, polypropylene / polyethylene terephthalate, polyvinylidene fluoride / polyethylene terephthalate, linear low density polyethylene and high density polyethylene mixture / Examples thereof include polypropylene.

The form of the composite fiber may be a sheath-core type, a side-by-side type, a multi-layer type, a hollow multi-layer type, a modified multi-layer type or the like, and the low melting point resin forms at least a part of the fiber surface. The melting point difference between the low melting point resin and the high melting point resin must be 10 ° C. or more. If the melting point difference is less than 10 ° C., it is difficult to control the temperature by heat treatment during the production of a laminated nonwoven fabric with the composite spunbonded nonwoven fabric or the composite meltblown ultrafine fiber nonwoven fabric, the degree of heat fusion is insufficient, and a high-strength nonwoven fabric cannot be obtained. Alternatively, wrinkles may be generated by heating at high temperature, or the entire nonwoven fabric may be melted to form a partially nonwoven fabric. Further, the obtained laminated nonwoven fabric has insufficient plucking resistance or is easily peeled off on the laminated surface.

In the composite spunbond continuous fiber, the composite ratio of the low melting point resin and the high melting point resin is 10 to 90 for the low melting point resin.
% By weight, and 90 to 10% by weight of high melting point resin. More preferably, the low melting point resin is 30 to 70% by weight and the high melting point resin is 70 to 30% by weight. When the low melting point resin component is less than 10% by weight, the heat fusion of the composite spunbonded nonwoven fabric itself is insufficient, or the heat fusion of the nonwoven fabric and the composite meltblown ultrafine fiber nonwoven fabric described below is insufficient, resulting in high heat fusion. It will be inferior in strength and resistance to plucking.

The fineness of the composite filament is not particularly limited
However, in the case of the surface material of the disposable diaper, about 0.2 to 10 d / f,
Approximately 0.5 to 20 d / f for wiper, in case of filter
In general, it is about 0.2 to 4000 d / f. Also of the non-woven fabric
The basis weight is not particularly limited, but is about 4 to 1000 g / m^Two
It is. Approximately 4 to 70 g / m for surface materials such as disposable diapers
^Two, Wiper, etc., about 10-600g / m^Two, Hui
In the case of a filter, etc., about 20 to 1000 g / m^TwoIt is. The
The composite spunbonded nonwoven fabric is a hot air heater,
Use a heater such as under-roll or hot embossing roll
As a result, a nonwoven fabric having stronger strength can be obtained. The present invention
In the case of using the above-mentioned heater, control the heating conditions etc.
Roll to give a strength of the nonwoven fabric of 0.6 kg / 5 cm or less.
It is preferable that

In the present invention, the composite melt-blown ultrafine fiber nonwoven fabric is obtained by independently melt-extruding at least two kinds of thermoplastic resins having a melting point difference of 10 ° C. or more, and producing a low melting point ultrafine fiber and a high melting point from a composite-type meltblown spinneret. Composite spinning of ultrafine fibers so that the low melting point resin forms at least a part of the fiber surface, and further blown as a stream of ultrafine fibers by a high-temperature and high-speed gas, and a composite ultrafine fiber web is obtained by a collecting device. A non-woven fabric is formed by heat-bonding treatment if necessary.

In the composite meltblown ultrafine fiber of the present invention,
It is sufficient that the low melting point resin forms at least a part of the fiber surface. It is particularly preferable that the composite ratio is such that the low melting point resin is 10 to 90% by weight and the high melting point resin is 90 to 10% by weight. Further, the composite form may be a sheath core, a parallel type or the like similar to the spunbond. As the resin, various resins such as those used in the above composite spunbond can be used. Further, as the combination of resins, various combinations as disclosed in the above composite spunbond are possible. For example, high density polyethylene / polypropylene, propylene / ethylene /
Examples thereof include butene-1 crystalline copolymer, high density polyethylene / polyethylene terephthalate, low melting point polyester / polyethylene terephthalate and the like. In addition, an inert gas such as air or nitrogen gas is usually used as the gas for blow spinning. The temperature of the gas is about 200 to 500 ° C., preferably about 250 to 450 ° C., and the pressure is about 0.1 to 6 kg /
cm ² , preferably about 0.2 to 5.5 kg / cm ² . The spinning conditions are appropriately set depending on the physical properties of the resin used, the combination of the resins, the target fiber diameter, the device such as the spinneret, and the like.

This non-woven fabric is composed of composite ultrafine fibers having an average fiber diameter of 10 μm or less. Preferably 0.1 to 9 μm,
More preferably, it is 0.2 to 8 μm. Fiber diameter is 10μ
When it exceeds m, the texture is deteriorated. In addition, a product having a thickness of 0.1 μm or less is difficult to manufacture and the price is high. The melt blown nonwoven fabric used in the present invention has 10 polymer balls / m ²
The following are preferred. Here, the polymer ball refers to a non-fiber shape having a diameter of 0.1 mm or more, such as a circle, an ellipse, and a teardrop shape. Polymer-For applications where the amount of beads increases, the skin will directly touch the skin, for example, the surface material of a paper diaper,
Even if the texture of the patch agent is soft, it has a rough feeling and it causes skin irritation, so it cannot be used.
Further, it is preferable that the both sides of the wiper or the like of the eyeglasses or furniture is a melt blown nonwoven fabric, but in addition to the rough feeling, the furniture or the like may be slightly scratched. Further, in the present invention, as the non-woven fabric, one having a unit weight per unit area index of 0.6 or less is particularly preferably used. Such a non-woven fabric can be obtained by appropriately selecting the spinning conditions of the composite melt blow spinning, the appropriate device and the like.

In the composite melt blown ultrafine fiber nonwoven fabric used in the present invention, the intersections of the fibers are heat-sealed. The heat fusion may be a product which is fused by self-heating during spinning, and a product which is heat fused by using a heating device such as a hot through air, a heat calender roll, and a hot embossing roll after spinning. May be The basis weight of the non-woven fabric is not particularly limited, but is about 3 to 1000.
g / m ² . Approximately 3 to 60 g for surface materials of disposable diapers
/ M ^2, wiper - when about 5 to 500 g / m ^2, filter -, then about 15~1000g / m ^2. The apparent density of the non-woven fabric is not particularly limited, but considering the texture, it is preferably about 0.02 to 0.40 g / cm ³ .

The laminated non-woven fabric of the present invention is obtained by laminating the above composite spunbonded non-woven fabric and the composite melt blown non-woven fabric, and using a hot through air type heating device, an alternating hot air jet type heating device and a thermal calendar.
It can be produced by heating using a heating device such as a roll, a hot embossing roll, or a sonic bond, and thermally fusing both layers. When a hot through-air heater or an alternating hot air jet type heater is used, a melt-blown non-woven fabric having a relatively large volume can be obtained. In the case of a hot air-air type heater, heat treatment is performed so that heat penetrates from the spunbonded nonwoven fabric side with a relatively large fineness to the meltblown nonwoven fabric side with a small fineness, the heat is applied uniformly, and the peel strength of both layers is increased. can do. When the melt-blown nonwoven fabric side is placed facing the hot air jet side and through air is heated, the hot air pressure, suction conditions, etc. are appropriately set, and the melt-blown ultrafine fiber monofilaments bite into the spunbonded nonwoven fabric layer. Moreover, since the inside of the spunbonded nonwoven fabric and the both layers are heat-fused double, the peeling strength of both layers can be controlled. Also, when a hot air blower is used on the front and back sides of the non-woven fabric, a non-woven fabric having a high bulk can be obtained. After laminating both nonwoven fabrics, entanglement treatment or the like may be performed by the needle punch method or the span lace method, and then heat treatment may be performed to obtain a material having a strong peeling strength. The heating temperature may be equal to or higher than the temperature at which the low melting point resin component of the composite long fibers constituting the composite spunbonded nonwoven fabric is softened or equal to or higher than the temperature at which the low melting point resin of the composite meltblown nonwoven fabric is softened.
Further, it is also possible to double the thermal fusion between the fibers of either of the nonwoven fabrics laminated at the time of heating both layers or both of the nonwoven fabrics. When the composite spunbonded non-woven fabric that has been heat-sealed is rolled, the non-woven fabric is unwound and the composite melt-blown ultrafine fiber non-woven fabric is laminated and heated, the heating temperature is the temperature at which the low melting point resin of the melt-blown non-woven fabric is softened. The above is sufficient. When the low-melting-point resins of both the composite spunbonded nonwoven fabric and the meltblown nonwoven fabric are heated to a temperature at which they are softened or fused, a product having stronger peel strength of both layers can be obtained. In addition, when using the heat embossing roll,
It is desirable that the thermocompression bonding area be 5 to 25%. If the pressure-bonding area is less than 5%, the hair removal resistance and the strength of the nonwoven fabric are poor, and if it exceeds 25%, the texture becomes hard.

In the present invention, the heating conditions, the low melting point resin of the composite spunbonded nonwoven fabric, the low melting point resin of the composite meltblown ultrafine fiber nonwoven fabric, etc. are appropriately selected so that the peel strength of both layers is 6
It is preferable to use g / 5 cm or more. The peel strength is 6 to 5000 g / 5 cm, more preferably about 10 to 4
It is 000 g / 5 cm. When the peeling strength is less than 6 g / 5 cm, both layers are easily peeled off due to friction or the like, which is insufficient for a paper diaper or the like. When the low melting point resin of the spunbonded nonwoven fabric and the low melting point resin of the composite melt-blown ultrafine fibers are the same, a product having remarkably high peel strength can be obtained.

Since the laminated nonwoven fabric of the present invention utilizes the high strength of the composite spunbonded nonwoven fabric, the nonwoven fabric weight is 40 g /
Those having a lateral strength of 0.6 kg / 5 cm or more when converted to m ² are preferable. Here, the lateral strength means the so-called cross machine direction (CD) of the spunbonded nonwoven fabric layer. When the spunbond layer is a multi-layer, it means the lesser of the longitudinal or lateral strength. The apparent density of the melt-blown nonwoven fabric after lamination is 0.02 to 0.20 g /
A cm ³ is particularly preferable because the soft texture of the ultrafine fibers constituting the meltblown nonwoven fabric can be used for various purposes such as a surface material of a paper diaper. The apparent density is
In the case of a surface material of a disposable diaper, a wiper, etc., about 0.02 to 0.
20 g / cm ³ , about 0.025 to 0.40 for filter media
It is g / cm ³ . It is particularly preferable that the laminated nonwoven fabric of the present invention has a unit weight per unit area index of 0.6 or less. Such a non-woven fabric can be obtained by using a composite spunbonded non-woven fabric and a composite melt-blown extra fine non-woven fabric having a unit weight index of 0.6 or less.

The laminated non-woven fabric of the present invention is used alone or after being laminated with other members, sewn, heat-sealed, etc., and used for various purposes. For example, when it is used as one member of a pants-type disposable diaper, it can be used for a part that requires relatively water repellency, for example, an inner member near the trunk, an inner member near the legs, and the like. Further, in the case where the vicinity of the leg portion is provided with a strip-shaped three-dimensional barrier inside for preventing liquid leakage, it can be used as the three-dimensional barrier material by heat fusion with other members. Of course, when used in the diaper or the like, an elastic member for adhering the body portion or the leg portion can be used together with other members or the laminated nonwoven fabric. The laminated nonwoven fabric can be used as a cover material for pants-type disposable diapers or the like with the composite melt blown ultrafine fiber nonwoven fabric side facing outside or inside. The laminated non-woven fabric can be laminated with other non-woven fabrics, tissues, webs, films and the like to be used as the cover material for the surface material, the cover material for the back surface material and the like.

Further, in order to allow liquid and moisture to quickly pass through the non-woven fabric of any layer of the laminated non-woven fabric and / or the whole laminated non-woven fabric, a large number of permeation holes of about 0.1 to 9 mm ² are arranged, Etc. can be used as one member. Further, the multi-layered nonwoven fabric can be adhered with a water repellent oil agent for controlling liquid permeability, an oil agent such as a hydrophilic oil agent, a fluorine-based water repellent agent and the like. The multilayer nonwoven fabric of the present invention can be used as a wiper of furniture etc. by laminating it as a melt blown nonwoven fabric / spunbonded nonwoven fabric / melt blown nonwoven fabric etc. and attaching various lubricants and the like. Also, the laminated non-woven fabric is pleated, further formed into a tubular shape, the laminated non-woven fabric is wound as it is to be formed into a tubular form, or the laminated non-woven fabric is wound while being heated and the layers are heat-sealed. A filter medium can be obtained by post-processing such as molding into a shape.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments. In the following examples, evaluation of nonwoven fabrics and the like is as follows. Fiber diameter: Cut 10 small pieces from web or non-woven fabric,
A scanning electron microscope was used to take a photograph at a magnification of 100 to 5000 times, a total of 100 fiber diameters were measured, and the average value was taken as the fiber diameter (unit: μm).

Nonwoven fabric strength: Using a tensile strength tester,
The breaking strength in the longitudinal direction and the breaking strength in the lateral direction (kg / 5 cm) of a non-woven fabric having a width of 5 cm were obtained, and the average value of 5 pieces was taken.

Texture: The texture of the non-woven fabric was evaluated by 5 panelists from the viewpoint of wrinkle, flexibility, texture and the like, and judged according to the following criteria. If 3 or more people have no wrinkles, good flexibility and no rough feeling, "good", 3 or more people have wrinkles, poor flexibility, rough feeling, or both If it is determined to be “defective”
It was determined.

Polymer ball: Randomly cut 10 non-woven fabrics of size 20 × 20 cm and use a magnifying glass to count the number of polymer balls having a fiber diameter of 0.1 mm or more (unit: piece / piece).
m ² ).

Hair loss: A non-woven fabric with a size of 20 × 20 cm is cut out, placed horizontally, wet with water, and while gently pressing, trace the surface of the non-woven fabric five times in a circular motion. After that, check if there is hair on your hand. When there was hair removal, it was determined to be "present", and when there was no hair removal, it was determined to be "none."

Peel strength: Cut the laminated non-woven fabric into a width of 5 cm. Peel while cutting both layers with a razor and use a tensile strength tester to determine peel strength. An average value of 5 was taken (unit: g / 5 cm).

Uniform index of non-woven fabric weight: 5 for laminated non-woven fabric
Randomly cut 40 cm x 5 cm sample pieces. The basis weight (g / m ² ) of each is measured. The uniformity index was calculated from the following formula. Uniformity index = (maximum basis weight-minimum basis weight) / average basis weight

[0035]

【Example】

Example 1 Using a composite spunbond spinning machine equipped with a composite spinning machine, an air sucker, a net conveyor, a heating machine, etc., a heat-fused composite spunbond nonwoven fabric was produced. The spinneret used was a sheath-core type composite spinneret having a pore diameter of 0.4 mm. As the first component, melting point 133 ° C, MFR22 (190 ° C, g / 1
0 min) high density polyethylene is used on the sheath side, and the second component has a melting point of 164 ° C and MFR60 (230 ° C, g / 10).
Min) polypropylene is used on the core side, and the composite ratio is 50/5.
0 (wt%), spinning temperature first component 285 ° C., second component 3
The fiber was spun at a temperature of 00 ° C., sucked with an air sucker at a speed of 3000 m / min, and the fiber was fed together with air to a net conveyer.
Sprayed. The blown air was sucked and removed by a suction / exhaust device provided at the bottom of the net conveyor. The obtained web had a fineness of 1.5 d / f. Through the web
It was heated with an air-type heater at a temperature of 145 ° C. to obtain a nonwoven fabric in which fibers were heat-sealed. The fabric weight is 1
8g / m ² , uniform index 0.25, longitudinal strength 2.97
kg / 5 cm, lateral strength was 1.75 kg / 5 cm.

A composite meltblown ultrafine fiber non-woven fabric was produced by using a meltblown spinning device equipped with a parallel type composite meltblown spinneret having a hole diameter of 0.3 mm, a net conveyer, and the like. The first component has a melting point of 135 ° C. and MFR76 (1
90 ° C., g / 10 min) propylene / ethylene / butene-1 terpolymer was spun at a spinning temperature of 280 ° C., and the second component had a melting point of 166 ° C. and MFR82 (230 ° C., g / 1).
(0 min) polypropylene was spun at a spinning temperature of 290 ° C. and a composite ratio of both components of 50 to 50% by weight, and heated air was blown at a heated air temperature of 360 ° C. and a pressure of 1.5 kg / cm ² . It was sprayed onto a net conveyor. The blown air was sucked and removed by a suction / exhaust device provided at the bottom of the net conveyor. The obtained web has a fiber diameter of 1.8μ.
m. Using a through-air-type heater for the web,
It was heated at a temperature of 135 ° C. to obtain a non-woven fabric in which fiber intersections were heat-sealed by fusing low-melting ultrafine fibers. The non-woven fabric has a basis weight of 20 g / m ² , a homogeneity index of 0.14, and a longitudinal strength of 1.72 k.
It was g / 5 cm, lateral strength was 0.89 kg / 5 cm, and apparent density was 0.055 g / cm ³ .

The composite spunbonded nonwoven fabric and the composite meltblown nonwoven fabric are laminated and heated at a temperature of 142 ° C. using a through air type heater to obtain a laminated nonwoven fabric having a two-layer structure in which both layers are heat-sealed. It was The hot air was heat-treated so as to blow from the composite spunbond side to the composite meltblown ultrafine fiber side. The weight of the laminated non-woven fabric was slightly increased by the heat treatment after lamination to be 40 g / m ² . The laminated non-woven fabric has a uniformity index of 0.18 and a longitudinal strength of 7.26 kg / 5.
cm, lateral strength was 5.33 kg / 5 cm. The apparent density of the melt-blown nonwoven fabric obtained by cutting and peeling the laminated surface of the laminated nonwoven fabric with a razor is
It increased slightly to 0.059 g / cm ³ . The laminated non-woven fabric has a good texture, no hair loss, and no polymer balls.
The number of pieces / m ² and the peeling strength were 149 g / 5 cm.

Example 2 A composite meltblown ultrafine fiber non-woven fabric was produced by the same production method as in Example 1. However, the spinneret has a hole shape of 0.3 mm
The sheath-core type composite melt-blow spinneret was used. Further, after spinning, no treatment with an air-heater was performed. As the first component, melting point 122 ° C, MFR122 (190 ° C, g /
10 minutes) linear low density polyethylene spinning temperature 260 ℃
Spinning with a melting point of 165 ° C as the second component, MFR120
(230 ° C., g / 10 min) polypropylene was used and spun at a composite ratio of the first component and the second component of 40 to 60 wt%, a spinning temperature of 280 ° C., a heated air temperature of 370 ° C., a pressure of 1.9.
The heated air was blown under the condition of kg / cm ² and was blown onto the net conveyer. The obtained web has a fiber diameter of 3.1.
μm. The web was in the form of a non-woven fabric having heat fusion at the intersections between fibers due to self-heating during spinning. The non-woven fabric has a basis weight 17
g / m ² , uniformity index 0.30, vertical strength 0.86 kg / 5
cm, lateral strength 0.61 kg / 5 cm, apparent density is 0.
It was 043 g / cm ³ .

The composite spunbonded non-woven fabric obtained in Example 1 and the composite melt-blown non-woven fabric heat-sealed by self-heating without heat treatment after spinning are laminated and heated at a temperature of 135 ° C. as in the above-mentioned Example 1. A laminated non-woven fabric having a two-layer structure in which both layers were heat-sealed was obtained. For heating, the composite meltblown nonwoven fabric layer was on the hot air jet side. The basis weight of the laminated nonwoven fabric was slightly increased by the heat treatment of the laminate, and was 36 g / m ² . The laminated nonwoven fabric has a homogeneity index of 0.28 and a longitudinal strength of 4.01.
kg / 5 cm, lateral strength was 3.18 kg / 5 cm. Further, the apparent density of the meltblown nonwoven fabric measured by cutting and laminating the laminated surface of the laminated nonwoven fabric with a razor slightly increased by heat treatment after lamination to 0.046 g / cm 3.
^{Was 3} . The laminated non-woven fabric has a good texture and no hair loss,
0 polymer particles / m ² , peel strength of 102g / 5cm
Met.

Comparative Example 1 A meltblown nonwoven fabric was manufactured by the same manufacturing method as in Example 1. Further, after spinning, no heat treatment with an air-heater was performed. As the spinneret, a regular fiber melt-blown spinneret having a hole diameter of 0.3 mm was used. Further, as the resin, polypropylene having a melting point of 167 ° C. and MFR21 (230 ° C., g / 10 minutes) is used, and spinning is performed at a spinning temperature of 300 ° C., and heated air is heated at a heated air temperature of 360 ° C. and a pressure of 1.5 kg / cm ^2. It was blown to obtain an ultrafine fiber web. The obtained web had a fiber diameter of 8.9 μm. The web was a non-woven fabric in which fibers were thermally fused by self-heating during spinning. The nonwoven fabric had a basis weight of 18 g / m ² . Further, it was confirmed that the non-woven fabric had a polymer ball visually and by touch.
The nonwoven fabric has a uniformity index of 0.32 and a longitudinal strength of 0.88 kg / 5.
cm, lateral strength 0.75 kg / 5 cm, apparent density of 0.
It was 070 g / cm ³ .

Fineness 2.6 d / f, basis weight 20 g / m ² ,
A polyethylene terephthalate spunbonded nonwoven fabric having a homogeneity index of 0.08, a longitudinal strength of 4.33 kg / 5 cm, and a transverse strength of 3.01 kg / 5 cm was laminated with the meltblown nonwoven fabric and heated at a temperature of 158 ° C. as in Example 1. A laminated non-woven fabric having a two-layer structure in which the layers were slightly heat-sealed was obtained. The spunbonded non-woven fabric was a product which was fused with a hot embossing roll. The basis weight of the laminated nonwoven fabric was slightly increased by the heat treatment of the laminate and was 40 g / m ² . The laminated nonwoven fabric has a uniformity index of 0.64 and a longitudinal strength of 6.85.
kg / 5 cm, lateral strength was 4.27 kg / 5 cm. The apparent density of the meltblown nonwoven fabric measured by peeling off the laminated surface of the laminated nonwoven fabric was slightly increased by the heat treatment after lamination to be 0.084 g / cm ³ .
The melt-blown non-woven fabric was wavy and wrinkled in the laminated non-woven fabric. The laminated nonwoven fabric had no hair loss.
The laminated non-woven fabric had poor flexibility, rough feeling due to polymer beads, and skin irritation due to the balls, and was poor in texture. Further, the number of polymer balls was 26 / m ² , and the peel strength was 5 g / m ² .

Comparative Example 2 A composite meltblown ultrafine fiber nonwoven fabric was manufactured by the same manufacturing method as in Example 1 above. However, the heat treatment after spinning was not performed. The same resin as in Example 1 was used as the first component and the second component, and the composite ratio of both components was 50: 50% by weight. The spinning temperature is 250 ° C. for both the first component and the second component,
The heated air was blown under the conditions of a heated air temperature of 250 ° C. and a pressure of 0.8 kg / cm ² to obtain an ultrafine fiber web. The obtained web had a fiber diameter of 18.9 μm. The web was in the form of a non-woven fabric having heat fusion between fiber intersections due to self-heating during spinning. The nonwoven fabric has a basis weight of 16 g / m ² and a uniformity index of 0.13.
Met. The nonwoven fabric has a longitudinal strength of 0.91 kg / 5c.
m, lateral strength 0.52 kg / 5 cm, apparent density 0.0
It was 65 g / cm ³ .

The composite spunbonded nonwoven fabric obtained in Example 1 was laminated with the meltblown nonwoven fabric, and
Similarly, a laminated nonwoven fabric having a two-layer structure in which both layers were heat-sealed by heating at a temperature of 140 ° C. was obtained. The weight of the laminated nonwoven fabric was slightly increased by the heat treatment of the laminate, and the weight was 35 g / m ² .
The non-woven fabric has a uniformity index of 0.24 and a longitudinal strength of 4.14k.
The g / 5 cm and the lateral strength were 3.01 kg / 5 cm.
The apparent density of the meltblown nonwoven fabric measured by cutting and peeling the laminated surface of the laminated nonwoven fabric with a razor was slightly increased by the heat treatment after laminating to 0.068 g / cm ³ . The laminated nonwoven fabric had no hair loss. The number of polymer balls was 0 / m ² and the peel strength was 61 g / cm ² . However, the texture of the melt-blown non-woven fabric was large because of its large diameter, and the texture was poor.

Example 3 A composite spunbonded non-woven fabric was produced in the same manner as in Example 1. However, as the first component, melting point 135 ° C, MFR7
6 (230 ° C, g / 10 minutes) propylene / ethylene /
Butene-1 terpolymer was used on the sheath side, polyethylene terephthalate with a melting point of 257 ° C. was used on the core side as the second component, a composite ratio of 50/50 (wt%), spinning temperature first component 2
The fiber was spun under the conditions of 80 ° C. and the second component of 295 ° C., sucked with an air sucker at a speed of 2647 m / min, and the fibers were blown together with air onto a net conveyor. The obtained web had a fineness of 1.7 d / f. The web was heated with a through-air type heater at a temperature of 152 ° C. to obtain a non-woven fabric in which fibers were heat-sealed. The non-woven fabric has a basis weight of 23 g / m ^2.
And, the uniformity index is 0.22 and the vertical strength is 4.26 kg / 5c.
m, lateral strength was 3.81 kg / 5 cm.

A composite meltblown ultrafine fiber nonwoven fabric was produced in the same manner as in Example 1. However, after spinning, no heat treatment was performed. However, as the spinneret, a sheath-core type spinneret having a hole diameter of 0.3 mm was used. The same terpolymer as in Example 1 was used as the first component on the sheath side at a spinning temperature of 280 ° C., and as the second component, polypropylene having a melting point of 166 ° C. and MFR74 (230, g / 10 min) was used on the core side for spinning. Spinning was performed at a temperature of 280 ° C. with a composite ratio of the first component and the second component of 40: 60% by weight. The heating air temperature was 380 ° C. and the pressure was 2.3 kg / cm ² . The nonwoven fabric had a fiber diameter of 2.6 μm and a basis weight of 20 g / m ² . The non-woven fabric was a material in which the fibers were weakly heat-sealed to each other due to self-heating during spinning. The non-woven fabric has a uniformity index of 0.34 and a longitudinal strength of 0.54 kg / 5c.
m, lateral strength 0.48 kg / 5 cm, apparent density 0.
It was 061 g / cm ³ .

The spunbonded non-woven fabric is not melt-blown.
Laminated with woven fabric, using a spunlace device, pressure 70
kg / cm^TwoThe water column entanglement treatment was performed under the conditions of 1. That
After that, the non-woven fabric was heated at a temperature of 150 ° C. as in Example 1 and
A laminated non-woven fabric having a two-layer structure in which the layers were heat-sealed was obtained. The multilayer
Woven fabrics are either spun laced or heat treated for laminates.
Caused by a slight decrease in basis weight, 37 g / m^TwoSo
Was. The laminated nonwoven fabric has a homogeneity index of 0.13 and a longitudinal strength.
6.03kg / 5cm, lateral strength 5.02kg / 5c
It was m. Also, cut the laminated surface of the laminated nonwoven fabric with a razor.
Apparent density of meltblown non-woven fabric measured by peeling
Is increased due to span lace treatment and heat treatment after lamination
And 0.092 g / cm^ThreeMet. The laminated nonwoven fabric is wind
The fit was good and there was no hair loss. Also, 0 polymer balls
/ M ^TwoThe peeling strength was 405 g / 5 cm.

Example 4 A product of the two-layer structure obtained in Example 2 in which both layers are heat-sealed.
Layered non-woven fabric, its spunbond non-woven fabric layer melts inside
Re-laminate so that the blown non-woven fabric layer is on the outside
Using a mutual jet type heating machine, heating at a temperature of 145 ° C
A non-woven fabric with a four-layer structure in which the non-bonded non-woven fabric layers are heat-sealed together.
Obtained. The laminated nonwoven fabric has a basis weight of 74 g / m^Two, Uniformity index
Is 0.28, vertical strength is 14.67 kg / 5 cm, horizontal strength
Is 11.32 kg / 5 cm, the appearance of melt blown nonwoven fabric
Density is 0.052 g / cm^ThreeMet. The laminated non-woven fabric
Had a good texture and had no hair loss. Also, the polymer ball
0 / m ^TwoThe peel strength was 204 g / 5 cm.
The laminated non-woven fabric as it is, or immersed in various lubricants, etc.
Method, spray method, etc., and used as a wiper for household use.
Could be used.

Comparative Example 3 From a regular fiber spunbond spinneret having a pore size of 0.4 mm, a melting point of 165 ° C., MFR60 (230 ° C., g / 10)
Min) polypropylene is spun at a spinning temperature of 300 ° C.,
The fibers were sucked with an air sucker at a speed of 3000 m / min, and the fibers were blown together with the air onto a net conveyer. The blown air was sucked and removed by a suction / exhaust device provided at the bottom of the net conveyor. The obtained web has a fineness of 1.5.
It was a d / f regular fiber. The web was heated with a through-air-type heater at a temperature of 162 ° C. to obtain a nonwoven fabric in which fibers were heat-sealed. The non-woven fabric has a basis weight of 18
G / m ² , uniformity index 0.75, longitudinal strength 2.10k
The g / 5 cm and the lateral strength were 1.35 kg / 5 cm.
The non-woven fabric was heat-treated at a temperature slightly lower than the melting point. However, one side of the non-woven fabric was insufficiently fused, and wrinkles were generated due to heat shrinkage during heating.

A meltblown nonwoven fabric was manufactured by the same manufacturing method as in Example 1. However, heat treatment by a through air heater after spinning was not performed. As the spinneret, a regular fiber spinneret having a hole diameter of 0.3 mm was used. Also, the resin has a melting point of 166 ° C., MFR74 (230 ° C., g / 10
Min) polypropylene was spun at a spinning temperature of 290 ° C., and heated air was blown under the conditions of a heated air temperature of 380 ° C. and a pressure of 2.0 kg / cm ² to obtain an ultrafine fiber web. The obtained web had a fiber diameter of 3.2 μm. The web was a non-woven fabric in which fibers were thermally fused by self-heating during spinning. The non-woven fabric has a basis weight of 18 g / m ² and a uniformity index of 0.2.
It was one. The non-woven fabric has a longitudinal strength of 0.72 kg / 5 cm,
Lateral strength 0.60 kg / 5 cm, apparent density 0.078
g / cm ³ .

The spunbonded non-woven fabric and the polypropylene melt blown non-woven fabric were laminated and heated at a temperature of 162 ° C. using a sul-air heater as in Example 1, and both layers were heat-sealed to give a basis weight of 39 g / m 2. It was obtained in ² of a two-layer structure non-woven fabric. The laminated nonwoven fabric has a uniformity index of 0.63, a longitudinal strength of 4.87 kg / 5 cm, and a lateral strength of 4.24 kg / 5.
cm. The nonwoven fabric was heat-treated at a temperature slightly lower than the melting point of polypropylene, but wrinkles were generated due to thermal contraction. The apparent density of the meltblown nonwoven fabric measured by cutting and peeling the laminated surface of the laminated nonwoven fabric with a razor was 0.081 g / cm ³ , which was increased by the heat treatment after the lamination. The laminated non-woven fabric had no hair loss. Also polymer
The number of balls was 0 / m ² , and the peel strength was 266 g / 5 cm. The nonwoven fabric had wrinkles and had a poor texture.

Comparative Example 4 A melt blown nonwoven fabric was manufactured by the same manufacturing method as in Example 1. However, the spinneret has a regular hole diameter of 0.3 mm.
A fiber die was used. Further, heat treatment with a through air heater after spinning was not performed. The resin has a melting point of 257 ° C.
Using polyethylene terephthalate, spinning temperature 300
Spinning at ℃, heated air temperature 360 ℃, pressure 1.8kg /
The heated air was blown under the condition of cm ² to obtain an ultrafine fiber web. The obtained web had an average fiber diameter of 5.2 μm. The web had almost no heat fusion between fibers due to self-heating during spinning, and when the web was pushed by hand, fluff adhered to the entire surface of the hand. The web has a uniformity index of 0.22 and a basis weight of 1
It was 6 g / m ² . The web has a longitudinal strength of 0.03 kg /
The strength was 5 cm, the lateral strength was 0.01 kg / 5 cm, and the apparent density was 0.070 g / cm ³ .

The composite spunbonded non-woven fabric obtained in Example 3 and the melt blown web were laminated and heated at a temperature of 148 ° C. using a through air heater as in Example 1, and both layers were heat-sealed. A laminated nonwoven fabric having a two-layer structure was obtained. The non-woven fabric had a basis weight of 39 g / m ² . The nonwoven fabric had a homogeneity index of 0.25, a longitudinal strength of 4.63 kg / 5 cm, and a lateral strength of 3.92 kg / 5 cm. The apparent density of the meltblown nonwoven fabric measured by cutting and peeling the laminated surface of the laminated nonwoven fabric with a razor was 0.072 g / cm ³ . The peeling strength was 4.9 g / 5 cm. The laminated nonwoven fabric had a good texture, and the number of polymer balls was 0 / m ² . However, there was much hair loss, and hair loss was poor.

Example 5 The composite spunbonded nonwoven fabric obtained in Example 1 and the sheath-core type composite meltblown ultrafine fiber nonwoven fabric obtained in Example 2 were laminated and thermocompression-bonded with a hot embossing roll. The roll used was a combination of a calendar roll and an embossing roll having a convex area ratio of 15%, and the meltblown nonwoven fabric was brought into contact with the embossing roll side. The thermocompression bonding conditions are an embossing roll temperature of 120 ° C. and a calendar roll temperature of 12
The temperature was 0 ° C. and the linear pressure was 25 kg / cm. The laminated nonwoven fabric is
The uniformity index was 0.26 and the basis weight was 35 g / m ² . The apparent density of the composite meltblown ultrafine fiber nonwoven fabric measured by cutting and laminating the laminated surface of the nonwoven fabric with a razor is 0.11 g.
/ Cm ³ . Longitudinal strength of the laminated nonwoven fabric is 8.92k
g / 5 cm, lateral strength was 7.65 kg / 5 cm, and peel strength was 827 g / 5 cm. The laminated nonwoven fabric had a good texture, and the number of polymer balls was 0 / m ² . There was no hair loss.

Example 6 A composite meltblown ultrafine fiber nonwoven fabric was manufactured by the same manufacturing method as in Example 1. However, the first component of the resin has a melting point of 1
Using high density polyethylene of 35 ° C. and MFR28 (190, g / 10 min), spinning was performed at a spinning temperature of 280 ° C., and the second component had a melting point of 166 ° C. and MFR36 (230 ° C., g / 10).
Min) polypropylene is spun at a spinning temperature of 260 ° C., and the heated air is blown under the conditions of a heating air temperature of 340 ° C. and a pressure of 2.1 kg / cm ² , and a parallel type ultrafine composite fiber having a composite ratio of 50: 50% by weight. Got the web. The obtained web had a fiber diameter of 7.6 μm. The web was a non-woven fabric in which fibers were thermally fused by self-heating during spinning. The nonwoven fabric was heated at a temperature of 145 ° C. using an air-heater to obtain a heat-bonded nonwoven fabric. The nonwoven fabric had a basis weight of 20 g / m ² . Further, it was recognized that the non-woven fabric had a slight amount of polymer beads by touch. The nonwoven fabric has a homogeneity index of 0.32, a longitudinal strength of 1.77 kg / 5 cm, and a lateral strength of 1.09 kg / 5c.
m and the apparent density was 0.046 g / cm ³ .

The composite spunbonded nonwoven fabric obtained in Example 1 was laminated with the above composite meltblown nonwoven fabric, and the laminated nonwoven fabric having a two-layer structure in which both layers were heat-sealed by heating at a temperature of 145 ° C. as in Example 1 above. Obtained. The weight of the laminated nonwoven fabric was slightly increased by the heat treatment of the laminate and was 39 g / m ² . The laminated nonwoven fabric has a uniformity index of 0.26, a longitudinal strength of 5.03 kg / 5 cm, and a lateral strength of 4.16 kg / 5 cm.
Met. Further, the apparent density of the meltblown nonwoven fabric measured by cutting and peeling the laminated surface of the laminated nonwoven fabric with a razor is:
Increased slightly by heat treatment after lamination, 0.051g
/ Cm ³ , the peel strength was 203 g / 5 cm. The laminated nonwoven fabric had no hair loss. The number of polymer balls in the meltblown nonwoven fabric was 2.8 / m ² . Further, the laminated nonwoven fabric had good flexibility and had a good texture with almost no feeling of roughness due to polymer balls. This laminated nonwoven fabric can be used as a heat insulating material or a filter material.

Example 7 A commercially available paper diaper having a plane having a substantially I-shaped cross section of a railroad rail was used, and only the surface material near the legs of the paper diaper was replaced with the laminated non-woven fabric of Example 1 above. It was The commercially available disposable diaper uses a polyethylene / polypropylene heat-fusible composite fiber staple, and uses a nonwoven fabric in which the intersections of the fibers are heat-sealed as a surface material, and a water-absorbent material containing pulp and a super absorbent resin as main components, And a backing material made of polyethylene film. Only the non-woven fabric near both legs was cut and removed from the diaper with a knife. The laminated nonwoven fabric obtained in Example 1 was laminated in the vicinity of both legs so that the composite meltblown ultrafine fiber nonwoven fabric layer was on the skin side and the composite spunbonded nonwoven fabric layer was on the polyethylene film side of the backing material. Further, three polyurethane elastic yarns are sandwiched between the surface material and the back material in a stretched state, and the remaining non-woven fabric near the central portion and the laminated non-woven fabric are heat-sealed together, and further the back material and the laminated non-woven fabric. And were heat fused. The remaining laminated non-woven fabric was cut with scissors to obtain a paper diaper in which the composite melt-blown ultrafine fiber non-woven fabric side was placed on the skin side of the legs. This diaper was curved in a substantially bow shape by elastic threads arranged on both legs. This diaper had soft legs and the melt-blown non-woven fabric was water-repellent and could prevent liquid leakage from the site, and was particularly suitable for a newborn baby.

[0057]

The laminated non-woven fabric of the present invention is a laminated non-woven fabric of a composite spunbonded non-woven fabric and a composite melt-blown ultrafine fiber non-woven fabric, and has a good texture and a high nonwoven fabric strength. Further, in the composite melt-blown ultrafine fiber nonwoven fabric, the intersections of the fibers are heat-sealed together and the low melting point component of the composite spunbond long-fiber nonwoven fabric is heat-sealed, so that the peel strength is large and there is no hair loss. Moreover, since there are no polymer beads, there is no rough feeling or skin irritation.

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[Procedure amendment]

[Submission date] September 13, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location D04H 5/00 D04H 5/00 Z D06M 17/00 D06M 17/00 Z

Claims (10)

[Claims] 1. A composite spunbonded nonwoven fabric and an average fiber diameter of 1.
A non-woven fabric having a multilayer structure in which a composite melt blown ultrafine fiber non-woven fabric of 0 μm or less is laminated, and the composite spunbonded non-woven fabric is composed of a composite long fiber in which a low melting point resin and a high melting point resin having a melting point difference of 10 ° C. or more are combined. The low melting point resin forms at least a part of the fiber surface and is heat-fused through the low melting point resin, and the composite meltblown ultrafine fiber nonwoven fabric has a low melting point difference of 10 ° C. or more. A composite meltblown ultrafine fiber comprising a melting point resin and a melting point electrode resin and the low melting point resin forming at least a part of the surface of the fiber is heat-bonded through the low melting point resin, and the composite spunbonded nonwoven fabric. The composite melt-blown ultrafine fiber nonwoven fabric is integrated by fusing the low melting point resin of the composite spunbonded nonwoven fabric and / or the low melting point resin of the composite meltblown ultrafine fiber nonwoven fabric. And it is laminated non-woven fabric. 2. The composite spunbonded non-woven fabric has a fineness of 0.5-.
A composite meltblown ultrafine fiber nonwoven fabric composed of 10 d / f composite long fibers, composed of ultrafine fibers having a fiber diameter of 0.1 to 10 μm, and 10 polymer balls having a fiber diameter of 0.1 mm or more / m ² or less. Apparent density of 0.02-0.2
0 g / cm ³ and the lateral strength of the laminated nonwoven fabric is 0.6
The laminated non-woven fabric according to claim 1, which has a homogeneity index of 0.6 or less and a peel strength of 6 g / 5 cm or more. 3. An absorbent article in which the laminated nonwoven fabric according to claim 1 or 2 is used as at least one member. 4. A composite meltblown ultrafine fiber nonwoven fabric and a composite spunbonded nonwoven fabric having a two-layer structure nonwoven fabric of a composite spunbonded nonwoven fabric and a composite meltblown ultrafine fiber nonwoven fabric or a composite meltblown ultrafine fiber nonwoven fabric on at least one surface thereof. The absorbent article according to claim 3, wherein a multi-layered nonwoven fabric having more than one layer is used. 5. A composite spunbonding method is used to spin a composite long fiber so that a low melting point resin having a melting point difference of 10 ° C. or more and a high melting point resin form at least a part of the fiber surface, and a web is formed. The formed or spun web is heated to a heat fusion temperature or higher to obtain a non-woven fabric in which the fibers are heat fused, and the average fiber diameter is 10 μm or less by the composite melt blow method.
A low melting point resin and a high melting point resin having a melting point difference of ℃ or more are spun into a composite meltblown ultrafine fiber in which the low melting point resin forms at least a part of the fiber surface, and there is no self-heat fusion during spinning. A fiber web or a non-woven fabric with self-heat fusion during spinning, or a web after spinning or a non-woven fabric with self-heat fusion is heated to a temperature higher than the heat fusion temperature, and the fibers are heat fused. A composite ultrafine fiber nonwoven fabric, the composite spunbonded web or heat fusion nonwoven fabric and a composite meltblown ultrafine fiber web or composite meltblown ultrafine fiber heat fusion nonwoven fabric are laminated, and heating is performed at a temperature higher than the temperature at which both layers are heat fused. Nonwoven fabric manufacturing method. 6. The method for producing a laminated non-woven fabric according to claim 5, comprising a step of entwining the webs or non-woven fabrics of both layers with a needle punch or a spun lace means before or after heating. 7. The method for producing a laminated non-woven fabric according to claim 5, wherein the through-air type heater is used to heat the layers to a temperature not lower than the heat fusion temperature. 8. The method for producing a laminated nonwoven fabric according to claim 5, wherein both layers are thermocompression bonded by using an embossing roll having a thermocompression bonding area of 5 to 25%. 9. The method for producing a laminated nonwoven fabric according to claim 5, wherein the composite spunbonded nonwoven fabric and the composite meltblown ultrafine fiber nonwoven fabric each have a uniformity index of 0.6 or less. 10. The method for producing a laminated non-woven fabric according to claim 5, wherein both layers are heated so that hot air is jetted alternately from the front surface side and the back surface side of the multi-layered nonwoven fabric by using a hot air alternating jet type heater. .