TW201030204A - Non-woven fabric and process for producing same - Google Patents

Abstract

Disclosed is a non-woven fabric (10) which comprises: core-sheath-type composite fibers each composed of a sheath part comprising a polyethylene resin and a core part comprising a resin component having a higher melting point than that of the polyethylene resin; and a hydrophilizing agent adhered on the surfaces of the core-sheath-type composite fibers. The non-woven fabric has thermally fused parts which are formed by thermally fusing the intersection points of the constituent fibers. The core-sheath-type composite fibers contain thermally extendable fibers which can extend in the length direction upon heating. In each of the thermally extendable fibers, a hydrophilicity gradient is formed in the thickness direction and/or the planar direction of the non-woven fabric (10). The non-woven fabric (10) can be used suitably as a surface sheet for an absorbent article and the like.

Description

201030204 VI. Description of the Invention: [Technical Field] The present invention relates to a non-woven fabric obtained by using a hydrophilic fiber which is reduced by heat and a method for producing the same. Further, the present invention relates to an improvement of a nonwoven fabric comprising a thermally extensible fiber whose length is elongated by heating. [Prior Art] A method of producing a non-woven fabric by blowing hot air to a web containing a heat-fusible fiber to fuse the intersection of the fibers is known. Further, in Patent Document 1, the electret nonwoven fabric used in the filter for collecting pollen or room dust by the electrostatic trapping function, and the fiber used for the production thereof are described as the following electret non-woven fabric. The polystyrene-based heat-retaining fiber and the electret nonwoven fabric produced using the fiber, and the polyolefin-based thermal adhesive fiber for the electret nonwoven fabric contains a polyolefin-based system to which an oil agent of 2 to 0.6% by weight is adhered. The heat is then applied to the fiber, and the heat treatment after the non-woven treatment by the heat treatment and/or the non-woven fabric is carried out, and the amount of the oil agent of the non-woven fabric is reduced to the side weight %, and the reduction rate can be 60% or more. Further, Patent Document 2 discloses a polyolefin-based composite fiber for nonwoven fabrics as described below, which comprises a non-woven fabric fiber having a thermal-adhesive polyolefin-based composite fiber and an oil agent adhered to the fiber. The oil agent is mainly composed of a specific polyethylene glycol-based aliphatic stalk, and is attached at a content of 〇2 to 66% by weight. Regarding a non-woven fabric which is a material which is elongated by heating by its length, that is, a heat-extensible fiber 145547.doc 201030204, the applicant has previously proposed a three-dimensional shaped non-woven fabric having crimping or constituting the constituent fibers as follows. a plurality of portions which are formed in the portion other than the pressing portion, and the intersections of the constituent fibers are joined to the at least one surface of the nonwoven fabric by a method other than pressing, and the pressing portion is formed as a concave portion, and the concave portion is formed The uneven shape of the convex portion is formed (refer to Patent Document 3). [Prior Art Document] [Patent Document] Patent Document 1: US 2002146951 A1 Patent Document 2: JP 4-316673A Patent Document 3: JP 2005-350836A [Disclosed from the patents 1 and 2, An oil agent on the surface of the fiber prevents the static electricity generated in the carding step and the problem caused by it. On the other hand, the heat treatment of the latter can reduce the oil agent from the surface, so that it can be easily exhibited. The electret of the function is not woven. However, in the descriptions of Patent Documents 1 and 2, the actually usable oil agent is limited to polyethylene glycol and fatty acid vinegar as a main component, and the degree of freedom in selecting an oil agent is low. Further, the patent document is not intended to be applied to applications other than electret nonwovens. Further, in Patent Document 2, the use of the surface material of the disposable diaper is limited to the use of the surface material of the disposable diaper, but it is not limited to a hydrophilic gradient. The non-woven fabric of Patent Document 3 uses a heat-extensible weaving dimension as a raw material, whereby 145547.doc 201030204 has the following advantages: it has a three-dimensional concave-convex shape without using a special manufacturing method, and is soft and has a low basis weight. . However, for example, when it is considered to be used as a surface sheet of an absorbent article, there is a case where liquid easily remains in the nonwoven fabric.

The present invention provides a non-woven fabric (also referred to as a non-woven fabric NW1), which includes a core portion comprising a sheath portion comprising a polyethylene resin and a core portion having a melting point higher than a resin component of the polyethylene resin. The fiber and (4) the hydrophilizing agent of the composite (4) composite fibril surface, and include a heat-melting portion formed by heat-melting the intersection of the fibers, and the above. The sheath is 3L complex. The fiber comprises a thermally extensible fiber whose length is elongated by heating, and the heat-expandable fiber has a hydrophilicity gradient in the thickness direction and/or the plane direction of the nonwoven fabric. In the non-woven fabric NW1, "the heat-extensible lapped fiber whose length is elongated by heating is not limited to the case where the length is further elongated by heating, and the length of the non-woven fabric is extended by heating. The state of the person. Further, the present invention provides a non-woven fabric (also referred to as a non-woven fabric W2). The heat treatment is performed on a web or a non-woven fabric containing fibers which are reduced in heat by heat, so that a part of the web or non-woven fabric is pro- The fiber having the lower hydrophilicity by the #@ reduction includes: a sheath portion containing a polyethylene resin and a resin having a melting point higher than the polyethylene resin to form a core portion; a composite fiber and a hydrophilizing agent attached to the surface of the core-sheath type composite fiber, and the polyethylene resin has a crystallite size of 100 to 2 Å. The non-woven NW2 is also a preferred embodiment of the non-woven NW1. Further, the present invention provides a method for producing a non-woven fabric which is obtained by subjecting a web or a nonwoven fabric comprising the above-mentioned hydrophilic fibers which are reduced by heat to obtain the web or non-woven fabric. Part of the non-woven fabric with reduced hydrophilicity. Further, the present invention provides a method for controlling the hydrophilicity of a non-woven fabric by subjecting a web or a nonwoven fabric comprising the above-mentioned hydrophilic fibers which are reduced by heat to heat treatment, thereby making the web or non-woven fabric partially Hydrophilicity is reduced. [Embodiment] Hereinafter, the present invention will be described based on preferred embodiments of the present invention. The "fiber which is reduced in heat by heat" used in the present invention includes the following: a portion having a portion containing a polyethylene resin and a core portion containing a resin component having a melting point higher than that of the polyethylene resin. A core-sheath type composite fiber, and a hydrophilizing agent attached to the surface of the core-sheath type composite fiber. The core-type composite fiber of the present invention may be a core-sheath type of the same core type, a core-sheath type of an eccentric type, or a side-by-side type, and preferably a core-sheath type of the same core type. The resin component constituting the sheath portion of the core-sheath type composite fiber of the present invention is a polyethylene resin. As the polyethylene resin, low density polyethylene (LDPE, Low Density Polyethylene), high density polyethylene (HDPE), and linear low density polyethylene (LLDPE' Linear Low Density Polyethylene) can be used. A high density polyethylene having a density of 0.935 to 0.965 g/cm3 is preferred. Further, it is preferred that the resin component constituting the portion be a polyethylene resin alone, but it may be blended with other resins 145547.doc 201030204. Examples of the other resin to be blended include a polypropylene resin, an ethylene-vinyl acetate copolymer (EVA, ethylene-vinyl copolymer), and an ethylene-vinyl alcohol copolymer (EVOH, ethylene vinyl alcohol C〇P〇lymer). In particular, the resin component constituting the sheath portion is preferably 50% by mass or more, particularly preferably 70 to 100% by mass, based on the resin component of the Le portion. The polyethylene resin constituting the sheath portion imparts heat stunability to the core-sheath type composite fiber, and functions as a hydrophilizing agent to be described later during heat treatment. The crystallite size of the polyethylene resin constituting the 卩β卩 is preferably 1 〇〇 2 〇〇Α 〇 〇 If the crystallite size is 1 〇〇 A or more, the hydrophilizing agent is easily introduced from the surface of the fiber during heat treatment. To the inside, and the choice of hydrophilizing agent used is also wide. Thereby, the hydrophilicity of the fiber or a desired portion such as a mesh or a nonwoven fabric obtained by using the fiber can be easily lowered. From the viewpoint of surely changing the hydrophilicity of the fiber surface, the crystallite size is preferably from 100 to 200 A, more preferably from 115 to 180 A. The above upper limit 200 A of the crystallite size is determined based on the viewpoint of mechanical properties such as tensile strength and elongation at break. If the crystallite size is within 2 〇〇A, the number of crystals will not decrease and the mechanical properties will not decrease. [Method for Measuring Microcrystal Size of Polyethylene Resin] The crystal size is calculated from the half value width measured by the powder X-ray diffraction method, and is calculated by the Sherrer formula. The calculation method was as follows: The peak value of the plane index (11 〇) of PE was calculated by using RINT-2500' manufactured by Rigaku Co., Ltd. by the attached crystallite size calculation program JADE6.0. The specific article 145547.doc 201030204 is as follows: CuKa ray (wavelength 0.154 nm) is used as the radiation source, and the generated electric current and current are set to 40 kV and 120 mA, and the scanning speed is set to l〇°/min. The sample was set at the time of measurement as follows: the fiber bundle was laid in parallel with the longitudinal direction of the slit of the sample holder so that the fiber bundle was perpendicular to the incident direction of the X-ray. The core portion is a portion that imparts strength to the core-sheath type composite fiber, and as the resin component constituting the core portion, a resin component having a higher melting point than the polyethylene resin can be used without particular limitation. Examples of the resin component constituting the core portion include a polyolefin resin (excluding polyethylene resin) such as polypropylene (PP), polyethylene terephthalate (PET), and polybutylene terephthalate. A polyester resin such as a diester (PBT, p〇lybutylene terephthalate) or the like may be used, and a polyamine polymer or a copolymer of two or more kinds of the above resin components may be used. Among these combinations, polypropylene (pp) or polyethylene terephthalate (PET) is preferably used. A plurality of resins may also be blended, and at this time, the wedding point of the core is the melting point of the resin having the highest melting point. Further, when the difference between the melting point of the resin component constituting the core portion and the melting point of the resin component constituting the sheath portion (the former - the latter) is 2 (rc or more, it is easy to produce a nonwoven fabric, and the difference in melting point is preferably 15 〇). The composite fiber having a sheath portion containing a polyethylene resin having a crystallite size of 1 〇〇 2 〇〇 A can be produced, for example, by a method of melt spinning to form a sheath-type composite fiber. At the time of 'trying to promote the curing of the ethylene resin constituting the sheath. Figure 1 does not include the spinning device including the extruder, 丨8, 2A and gear 145547.doc 201030204 pump IB, 2B double system extrusion device !, 2 and the spinning head 3. The resin components which are melted by the extruder ΙΑ, 2A and the teeth 33 springs (7), 2B and are metered are collected in the spinning head 3 and then ejected from the nozzle. The shape of 3 may be selected according to the form of the target composite fiber. In a preferred embodiment, the resin component is ejected from the nozzle in a state in which the resin forming the sheath surrounds the resin forming the core portion, and The above nozzle is in a circular shape in the form of dispersion I A plurality of inner portions are formed. Below the spinning head 3, a pulling device 4 is provided, which draws the molten resin ejected from the nozzle downward at a specific speed. As a method for promoting curing of the epoxy resin of the portion, for example, List: As shown in the figure, the molten resin sprayed from the nozzle blows the cold air to promote the solidification of the portion; or the method of nucleating the nucleating agent in the polyethylene tree to promote crystallization. The temperature of the cold wind taken by B can be set to 2 〇 ~ the boot is set to 20 to 25 ° C. ❿ Also, the wind speed is preferably higher, and the wind catch is better than 5 or better l〇m/sec. The above, and more preferably 2〇ηι—above. The short ^^ can be preferably used in the following method: after the melt spinning, relatively more than 2 1 '(4) water in the tree, or make the bath or A nucleating agent that promotes the crystallization of a polyethylene resin in an oil bath, which is preferably a nucleating agent such as a di-I-based compound such as a sugar alcohol; an alicyclic multi-element such as tetrazoline or phthalic acid; Acidic base vinegar (preferably 145547.doc 201030204 carbon number 8~22 alkyl ester) is a nucleating agent; adipic acid, azelaic acid Or azelaic acid such as azelaic acid, more than a carboxylic acid alkyl ester (preferably a carbon number 8 to 22 alkyl ester) nucleating agent; 1,2'3-propane tricarboxylic acid three (2 - A Base cyclohexylamine) and the like. Moreover, the method of blowing the cold air 5 may be used in combination with the method of blending the nucleating agent, or one or both of the methods may be used, and the method of making the temperature of the resin component of the anger portion higher than the normal temperature, Or a method of making the spinning speed of the spun yarn higher than the previous normal speed or the like. Further, from the viewpoint of promoting the sheathing speed of the spun yarn, it is preferably 1000 m/min or more, more preferably 13 〇〇 m/min or more. Further, in order to facilitate the bundling of the fibers ejected from the spinning head 3 and to reduce the friction with the pulling device 4, the roller 7 is used to supply lubricating oil to the surface of the fiber. The core-sheath type composite fiber is preferably a fiber whose length is elongated by heating (hereinafter, also referred to as a heat-expandable composite fiber). Examples of the thermally extensible fiber include those in which the crystal state of the resin is spontaneously elongated by heating. In the nonwoven fabric, the thermally extensible fiber is present in a state in which its length has been elongated by heating, and/or a state in which it can be elongated by heating. The preferred heat-expandable composite fiber comprises a second resin component constituting the core portion and a second resin component comprising a polyethylene resin constituting the sheath portion, and the second resin component has a melting point higher than that of the second resin component. The second resin component is a component exhibiting thermal elongation of the fiber, and the second resin component is a component exhibiting heat fusibility. The second resin component constituting the sheath portion may be continuously present in at least a part of the surface of the fiber in the longitudinal direction. The melting points of the first resin component and the second resin component were cut to a finer degree by using a differential scanning 145547.doc -10. 201030204 (made by Seiko Instruments Co., Ltd., DSC6200) at a temperature rising rate of 10 ° C /min. The fiber sample (sample weight: 2 mg) was subjected to thermal analysis, and the melting peak temperature of each resin was measured and defined by the melting peak temperature. When the melting point of the second resin component cannot be clearly determined by the method, the resin is defined as "a resin having no melting point". In this case, the temperature at which the molecules of the second resin component start to flow, that is, the temperature at which the second resin component is fused to the strength of the fused point of the measurable fiber, serves as a softening point, and the softening point is used instead of the solution. point.

The preferred orientation index of the first resin component in the heat-expandable composite fiber varies depending on the resin to be used. For example, in the case of a polypropylene resin, the orientation index is preferably 6% or less. More preferably, it is 40% or less, and even more preferably 25% or less. In the case where the first fat component is a polyester, the orientation index is preferably 25% or less, more preferably 2% or less and further preferably 10% or less. On the other hand, the orientation index of the second resin component is preferably 5% or more, more preferably 15% or more, and further preferably 疋30/. the above. The alignment index is an index of the degree of alignment of the polymer chains constituting the resin of the fiber. Further, by setting the alignment index of the first resin component and the second resin component to the above values, the heat-expandable composite fiber can be elongated by heating. = The value of the birefringence of the resin in the heat-expandable composite fiber is A, and the value of the intrinsic birefringence of the tree = fat is defined by the following formula (1). Orientation index (ο/ο^Α/ΒχΙΟΟ (1) means intrinsic birefringence, which refers to the birefringence in the state of the polymer splicing of the resin 145547.doc 201030204, the value of which is described, for example, in the plastic material in the forming process. The first edition, the attached table for representative plastic materials for forming processing (edited by the Society of Plastic Forming, Sigma Publishing, issued on February 10, 1998). The birefringence of the thermally extensible composite fiber is polarized on an interference microscope. The plate was measured under polarized light in a direction parallel to the fiber axis and in the vertical direction. As the impregnation liquid, a standard refractive liquid manufactured by Cargille Co., Ltd. was used. The refractive index of the impregnation liquid was measured using an Abbe refractometer. The interference fringe image of the composite fiber obtained by the interference microscope is obtained by calculating the refractive index in the direction parallel and perpendicular to the fiber axis by the calculation method described in the following literature, and calculating the difference between the two, that is, the birefringence "Formation of fiber structure in high-speed spinning of core-sheath type composite fiber" Page 4〇8 (Fiber Society Miscellaneous, V〇l·5 1, No. 9, 1995) Heat The long conjugate fiber can be elongated by heat at a temperature lower than the melting point of the first resin component. Further, the heat-expandable conjugate fiber is at a melting point of the second resin component (in the case of a resin having no melting point) Softening point) The thermal elongation at a temperature of 10 ° C is preferably 〜5 to 2%, more preferably 3 to 2 (four)' and further preferably 5 〇 to 2 〇%. Containing such heat The non-woven fabric of the elongation fiber becomes bulky by the elongation of the fiber, or exhibits a three-dimensional appearance. For example, the uneven shape of the surface of the non-woven fabric becomes obvious. [The thermal elongation of the fiber] The thermal elongation of the fiber can be utilized. The measurement was carried out by the following method. The thermomechanical analysis device (9) (10) of the Inspection Instruments system was used. The sample was prepared in such a manner that the total weight per 10 coffee fiber lengths was 〇.5 145547.doc 201030204. A plurality of fibers having a length of 10 mm or more were selected, and the plurality of fibers were arranged in parallel, and then installed in the apparatus at a distance of 1 〇mn between the chucks. The measurement start temperature was set to 25 t, and the load was 〇73 mN/ Fixed dtex In the state of weight-bearing, the temperature is increased by 5. (: /min. The elongation of the fiber at this time is read in the refining point of the second resin component (in the case of the resin having no melting point, it means the softening point). The elongation X (mm) at a temperature of 丨0〇c, the thermal elongation of the fiber is calculated by the following formula: The thermal elongation (%) of the fiber = (X/l〇) xl 上述 at the above temperature The reason why the thermal elongation is measured is that when the non-woven fabric 10 is produced by heat-melting the intersection of the fibers, it is usually at a temperature equal to or higher than the melting point or softening point of the second resin component, and is higher than the temperature of 1 (r). Manufacturing is carried out within the scope. [Evaluation of thermal elongation of fibers taken out from non-woven fabric] When fibers are taken out from the nonwoven fabric to judge the thermal elongation of the fibers, the following method is employed. First, five fibers of each portion shown in Fig. 3 (1) of the non-woven fabric were selected. The length of the selected fiber is 丨mm or more and 5 mm or less. The selected fibers were clamped between the specimen slides, and the total length of the sandwiched fibers was measured. The measurement was carried out by observing the above-mentioned fibers at a magnification of 50 to 100 times using a microscope VHX_900 manufactured by KEYENCE and a lens VH_Z2〇R, and measuring the observed image by a measuring instrument incorporated in the apparatus. The length obtained by the above measurement was defined as "the total length of the fiber selected from the nonwoven fabric" γ. The fiber after the measurement of the full length was placed in a sample container (product name: robot container 52_023P, 15, aluminum 145547.doc -13·201030204) manufactured by SII Nano Technology Co., Ltd. for DSC6200. The container containing the above fibers was placed in a sample placement position in a heating furnace of DSC 62(R) previously set to a temperature 10 ° C lower than the melting point of the composition of the eucalyptus. When the temperature measured by the thermocouple immediately below the sample placement position of the DSC62 (the display name in the measurement software: the sample temperature) is lower than the melting point of the first resin component by 1 (the temperature of rc is ±rc), After heating for 60 seconds, it was quickly taken out. The heat-treated fiber was taken out from the dSC sampler and clamped between the specimen slides, and the total length of the held fiber was measured. The measurement was performed using a microscope manufactured by KEYENCE. 900, lens VH-Z20R. The measurement system observes the above-mentioned fiber at a magnification of 5 〇 to 1 〇〇, and uses the measuring tool incorporated in the device to measure the observed image, and the length obtained by the above measurement is set as " The total length of the fiber after heat treatment is Ζ. The thermal elongation (%) is calculated by the following formula: Thermal elongation (°/〇) = (Ζ-Υ) + γ χΐ〇〇 [%] This value is defined as self-woven The thermal elongation of the fiber taken out. When the thermal elongation is greater than 0, it can be judged that the fiber is a heat-extensible fiber. In order to achieve the above-mentioned alignment index for each resin component in the heat-expandable composite fiber, for example, a melting point is used. Different eucalyptus The fat component and the second resin component are melt-spun at a low speed of less than 2000 m/min to obtain a conjugate fiber, and then the conjugate fiber may be subjected to heat treatment and/or crimping treatment. It is possible to adopt a method in which the stretching treatment is not performed. As the crimping treatment, mechanical crimping is relatively simple. The mechanical crimping has a planar shape and a three-dimensional shape. In addition, the core-sheath type composite fiber or the side-by-side type is also included. The three-dimensional shape visible in the composite fiber is crimped, etc. In the present invention, any aspect of the crimping can be performed. The crimping process is sometimes accompanied by heating of I45547.doc -14-201030204. After the shrinking treatment, the heat treatment is performed. Further, the heat treatment may be performed separately from the heat treatment after the crimping treatment, or the heat treatment may be performed separately without performing the crimping treatment. In the shrinking treatment, sometimes the fiber is stretched somewhat, and thus the stretching is not included in the so-called elongation treatment in the present invention. The so-called elongation treatment in the present invention refers to the unstretched wire pass. The stretching operation is performed at a stretching ratio of about 2 to 6 times. The conditions of the heat treatment may be selected according to the types of the second and second resin components constituting the composite fiber. The heat of the mouth is higher than that of the second resin component. The temperature at which the melting point is low. For example, when the heat-expandable composite fiber is a core-sheath type, and the core component is polypropylene and/or polyester, and the sheath component is high-density polyethylene, the heating temperature is preferably 5〇. ~12〇t, particularly preferably 7〇~115°C, the heating time is preferably 1〇~18〇〇 seconds, particularly preferably 20 seconds. As a heating method, hot air blowing, infrared irradiation The heat treatment can be carried out after the crimping treatment as described above. The ratio (weight ratio) of the second resin component to the second resin component in the heat-expandable composite fiber is preferably 10: 90 to 9: 10%, particularly preferably 2〇: 80~80: 20%, particularly preferably 5G: H鸠4 The above ratio is the range θ', the mechanical properties of the fiber become sufficient, "is a practical fiber. Further, the amount of the melted component becomes sufficient, and the fibers are fused to each other to become sufficient. Moreover, it is preferable to use it as a ruthenium resin component as a core, from the viewpoint of good passability of the non-woven fabric manufactured by the carding machine before the elongation is not impaired. The ratio is larger. 145547.doc 201030204 The fiber length of the heat-expandable composite fiber can be used according to the length of the non-woven fabric. For example, when a non-woven fabric is produced by a carding method as will be described later, it is preferable to make the fiber length 3. ~7. Mm or so. The fiber length of the heat-fusible composite fiber described below is also the same. The fiber diameter of the stretched, ±, and reinforced composite fibers is selected according to the specific use of the nonwoven fabric. When a non-woven fabric is used as a surface sheet of an absorbent article, etc., in the case of a constituent member of a living body, it is preferable to use (4) a particularly good 15 to 3 caller. The fibers of the heat-soluble composite fiber described below are also straight; Further, when the fiber diameter of the heat-expandable composite fiber becomes small due to elongation, the fiber diameter refers to the fiber diameter when the nonwoven fabric is actually used. As the heat-expandable conjugate fiber, in addition to the above-described heat-expandable conjugate fiber, the fiber described in the following publication may be used: Japanese Patent No. 4,131,852, Japanese Patent Laid-Open Publication No. Hei. Japanese Laid-Open Patent Publication No. 2007-303035, Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. 2007-204902, and Japanese Patent Laid-Open No. Hei. No. 2007-204902. The hydrophilizing agent adheres to the surface of the core-sheath type composite fiber to improve the hydrophilicity of the surface of the fiber before the adhesion of the hydrophilizing agent. As the hydrophilizing agent, the same as the hydrophilizing agent used in the technical field can be used. Typical examples of such a hydrophilizing agent include various surfactants. As the surfactant, an anionic, cationic, amphoteric, and nonionic surfactant can be used. 145547.doc -16- 201030204 As an example of an anionic surfactant, there may be mentioned alkyl phosphate, sodium sulphate, sodium sulphate, and sodium sulphate [dialkyl sulphate] Known sodium salt, sodium alkylbenzene sulfonate, sodium alkyl sulfonate, sodium sulfonate sodium salt, second sodium sulfonate sodium salt, etc. (any alkyl group is better - 疋妷The number is 6 to 22, and particularly good is 8 to 22). These salts may also be replaced by other metal salts such as potassium salts. As an example of the cationic surfactant, an alkyl (or alkenyl) trimethyltolerate 'diphosyl (or alkenyl) dimethyl descriptive compound, an alkyl group (or alkenyl group) may be mentioned. Pyridinium halides and the like, and these compounds preferably contain a carbon or a hard group having 6 to 18 carbon atoms. Examples of the halogen in the above halide include gas, bromine and the like. Examples of the amphoteric ionic surfactant include an alkyl group (carbon number: 1 to 3 Å) dimethyl betaine, and an alkyl group (carbon number: 1 to 30) decylamino group (carbon number: 14). Betaine type, etc. • Zinc ion interface activity such as betaine, sulfobetaine type amphoteric surfactant, etc. Or an alanine type [alkyl (carbon number “ ~ ") alanine propionic acid type, alkyl (carbon number 1 ~ 30) imido dipropionic acid type, etc.] amphoteric surfactant, glycine type [ Alkyl (carbon number: 1 to 30) aminoacetic acid type, etc.] amphoteric surfactants such as amphoteric surfactants; alkyl (carbon number 1 to 3 〇) amino acid sulfonic acid type Surfactant. Examples of the nonionic surfactant include polyglycerol fatty acid such as glycerin fatty acid vinegar, poly (preferably n=2 to 10) glycerin fatty acid ester, and sorbitan fatty acid vinegar. Ester (all preferably the fatty acid has a carbon number of 8 to 22) 'The alkylene oxide adduct of the above polyol fatty acid ester (preferably 145547.doc -17· 201030204 into a molar) 2 to 20 m), polyoxyalkylene (additional molar number 2 to 20) succinyl (carbon number 8 to 22) decylamine, polyoxyalkylene alkyl (additional molar number 2 to 2 〇 An alkyl group (carbon number 8 22) ether, polyoxyalkylene alkyl modified polyfluorene oxide, amine modified polyoxyl oxide, etc. Further, among nonionic surfactants, polyethylene glycol, polyethylene glycol The diol fatty acid vinegar can be used, but for example, when the non-woven fabric is produced by using the above-mentioned core-sheath type composite fiber having the surfactant attached to the surface, it is prevented from generating static electricity during the storage of the non-woven fabric and sucking the dust in the air. From the point of view, it is preferable to use a nonionic surfactant other than the above, and when the above non-woven fabric is used as a surface material of an absorbent article such as a sanitary napkin, a sanitary pad, or a disposable urethane cloth, It is preferable to use a nonionic surfactant other than the surfactant so that the surfactant is not easily detached from the surface of the fiber by the excretion liquid and the durability of the excretion liquid (absorption rate) is increased. Lifting the hydrophilicity of the fiber and reducing the hydrophilicity by heat From the viewpoint of the above, a group of preferred surfactants or surfactants can be mentioned. Alkyl phosphate potassium salt, polyoxyethylene alkyl decylamine and alkyl betaine, alkyl phosphate potassium salt and alkane Sodium sulfonate sodium salt, polyoxyethylene alkyl hydrazine amine and polyglycerol monoalkylate, polyoxyethylene alkyl decylamine and stearyl phosphate potassium salt, polyoxyethylene alkyl urethane and polyglycerol monoalkylate , alkyl sulfonate sodium salt and stearyl sulphate potassium salt, alkyl ether phosphate potassium salt and polyglycerol fatty acid 6 曰, polyoxyethylene alkyl decylamine and sodium dialkyl sulfosuccinate Salt, polyoxyethylene polyoxypropylene modified polyfluorene oxide and dialkyl sulfosuccinate, polyglycerol fatty acid ester and dialkyl sulfosuccinate sodium salt, sorbitan fatty acid ester and Sodium dialkyl sulfosuccinate, polyoxyethylene alkyl decylamine and 145547.doc • 18- 201030204 Fat, polyoxyethylene styrene and sorbitan fatty acids: propylamine and de-water Sorbitol fatty acid vinegar, polyoxyethylene ethoxylate polyoxypropylene modified W oxygen and polyoxyethylene sulphur-based, polyoxyethylene oxime polyoxygen modified polyoxyl Glycerin fatty acid vinegar, polyoxyethylene polyoxypropylene silicon modified polyethylene oxide and sorbitan fatty acid vinegar, sorbitan fatty acid

Ethyl sulphate, polyglycerol fatty acid vinegar and sorbitan fatty acid, polyglycerol fatty acid S and polyoxyethylene (4). The combination of the preferred surfactants and preferred surfactants may comprise such surfactants, and may further comprise other surfactants. The adhesion amount of the hydrophilizing agent is increased from the viewpoint of the hydrophilicity of the portion which is not hydrophobized [preferably, the mass of the core-sheath type composite fiber: 〇.1 to 0.6 mass. /. It is better to 〇 2 to 〇 5 mass%. As a method of attaching the hydrophilizing agent to the surface of the core-sheath type composite fiber, various known methods can be employed without particular limitation. For example, application by spraying, application by a slit coater, application by roll transfer, impregnation in a hydrophilic oil agent, or the like can be mentioned. These treatments can be carried out on the core-sheath type composite fibers before the web formation, or after the core-sheath type composite fibers are networked by various methods. In Fig. 2, the following state is shown in a mode: a bundle of core-sheath type composite fibers obtained by the spinning apparatus shown in Fig. 2 is taken out from the housing portion 6 in which it is housed. After the lubricant adhered by the roller 7 is washed and removed, it is passed through the hydrophilizing agent applying device 62, and the hydrophilizing agent is attached to the surface of the core-sheath type composite fiber. The core-sheath type composite weave with a hydrophilizing agent attached to the surface is dried in a hot air blowing type 145547.doc -19- 201030204 dryer 63 at a temperature sufficiently lower than the melting point of the vinyl resin (for example, 1 艽 or less) The crimping process is performed by the crimping device 64, and then cut into a specific length using the cutting device 65 to obtain a short fiber aggregate. The "fiber having a hydrophilicity lowered by heat" used in the present invention can be suitably used in the production of a sheet material such as a mesh or a nonwoven fabric. Further, it is also possible to form a layer of a portion of the laminate on the sheet material to be produced. Further, the hydrophilicity of the desired portion is lowered by the heat treatment after the production step of the sheet material or the step of manufacturing the sheet material or the laminate. With regard to lowering the hydrophilicity, the hydrophilicity of the sheet material as a whole can be lowered, and the sheet material can be partially reduced. The thickness (fineness) of the fiber can be selected according to the specific use of the manufacturer, for example, a non-woven fabric, etc., and the thickness of the fiber (fineness) can be obtained from the viewpoint of producing a soft nonwoven fabric and a good non-woven fabric such as a touch. ) Better ^ 〇 ~1〇() I, better 疋 2.0~8.0 dtex. 3(4) and (10) are views showing a non-woven fabric U) according to the embodiment of the present invention, which is formed of a "mesh having a hydrophilicity reduced by heat" as described above, and then formed into a mesh. The hydrophilicity of the portion of the mesh is reduced. 77 As a method of obtaining a network from a fiber which is reduced in hydrophilicity by heat, various known methods such as a carding method, an air laid method, a spunbonding method, or the like can be used, and it is preferred to use a comb as shown in FIG. Method of cotton fairy (carding method). The non-woven fabric shown in Fig. 3 (4) and Fig. 3 (8) is obtained as follows. As shown in the figure, the short fiber of the fiber which is reduced by heat by heat is used as a raw material, so that the (four) cotton machine u forms the net 12 The mesh 145547.doc 201030204 is introduced into an embossing device 13 including a pair of rollers 14, 15 for embossing, and the hot air processing device 17 is used to perform the embossed mesh 16 Heat treatment. One of the pair of rolls for embossing is an embossing roll 14 having an embossing convex portion having a lattice pattern formed on the circumferential surface thereof, and the other having a smooth circumferential surface and the embossing roller pair The smooth roller 15 is arranged. The embossing is performed by pressurizing the mesh between the convex surface of the pressure roller and the smooth roller i 5 and (4). Thus, a non-woven fabric including a thick sound formed by the >1 pattern, a thinner portion (embossed portion) 18, and a thicker portion 2 than the thicker portion is obtained.

In the first embodiment of the method for producing a non-woven fabric according to the present invention, when the non-woven fabric 1G is manufactured in the above manner, the temperature applied to the web is suppressed to be a fiber which is hydrophilic and lowered by heat. The d-point portion of the polyethylene resin has a melting point or lower, and thereafter, at the time of hot air treatment, a temperature equal to or higher than the melting point of the polyethylene resin and the melting point of the resin component of the portion is applied. When the embossing is applied, the gas permeability is lowered as the dust is closer to the mesh portion by compression. On the other hand, the melting of the polyethylene resin constituting the ridge portion is only the melting of the pressure. On the other hand, when the hot air treatment is performed, the portion (10) which is mainly densified by embossing has almost no hot air flow, or even if it has a thickness other than the embossed portion The thicker the hot air, the easier it is to pass, and the lower the hydrophilicity. Thereby, the following non-woven fabric is obtained, and the thin portion 18 and/or its circumference, that is, the thick portion formed by embossing is a hydrophilic portion 'and is close to 145547.doc -21- 201030204 The thicker portion 19 is relatively denser than the portion having the thickest hydrophobic thickness. Further, the dream is treated by the hot air, and the sheath portion other than the embossed portion is melted, and the intersection of the fibers is thermally fused to obtain a non-woven fabric having strength. The nonwoven fabric 1 shown in Fig. 3 (a) and Fig. 3 (b) is configured as a single layer structure. The non-woven fabric ίο has a concave-convex surface 1〇b having a concave-convex shape, and the other surface is flat or has a flat surface i〇a having a degree of unevenness smaller than the uneven surface. The thick portion 19 and the thin portion 18 of the non-woven fabric are formed into a convex portion 119 and a concave portion 118 on the uneven surface 10b of the non-woven fabric. The concave portion ι 8 includes a first linear concave portion 1183 extending in parallel with each other and a second linear concave portion U8b extending in parallel with each other, and the i-th linear concave portion 118 & and the second linear concave portion are disposed at a specific angle. The convex portion 119 is formed in a closed area of a diamond shape surrounded by the concave portion 118. The top portion P1 of the thicker portion is formed by the thicker portion 19 on the top portion P1 of the convex portion 119 formed on the uneven surface 10b of the nonwoven fabric. When the liquid enters from the side of the uneven surface i 〇 b, the liquid easily leaks to the side of the flat surface i 〇 a side so that the liquid residue in the nonwoven fabric 10 is reduced, preferably at the top of the thick portion 19 P1 is more hydrophilic than the thinner portion 18 or its proximal portion P3. Further, it is preferable that the hydrophilicity gradually increases from the top portion P1 of the thick portion 19 toward the thin portion (embossed portion) 18 or the vicinity portion P3 thereof. The uneven surface 10b of the nonwoven fabric 10 is directed to the side of the embossing stick 14 during embossing, and is directed to the side opposite to the mesh surface (the gas permeable support) when hot air is processed by hot air, and is directly blown to the side of the hot air. The face. Therefore, when the heat-expandable composite fiber is used as the constituent fiber of the nonwoven fabric, the elongation of the heat-expandable composite fiber on the uneven surface l〇b is larger than that of the flat surface 1〇a. Therefore, the fiber diameter of the thermally extensible composite fiber on the surface of the flat surface 10a is larger than the fiber diameter of the surface of the uneven surface 10b. Further, the hydrophilicity of the thick portion 19 is such that the concave side 1 Ob side is lower than the flat surface 10a side. In the method for producing a nonwoven fabric according to the first embodiment, the temperature applied to the web during the embossing is suppressed from the viewpoint of the change in the hydrophilicity of the embossed portion and/or the adjacent portion (peripheral portion). It is preferable that the melting point of the Φ $ethyl resin constituting the above-mentioned portion is lower than the temperature of 2 〇 ° C, and the melting point of the resin component constituting the core portion is not reached. On the other hand, 'the temperature applied during the hot air treatment is such that the hydrophilicity is surely changed. It is preferably one level lower than the melting point of the above polyethylene resin (above the temperature of rc, particularly preferably the above polyethylene) Above the melting point of the dilute resin, it is better that the melting point of the above polyethylene resin is above. According to the method of the present embodiment, the non-woven fabric including the hydrophilic portion and the hydrophobic portion can be manufactured without complicated devices or special installations. And the obtained non-woven fabric is used as a surface material of an absorbent article such as menstrual sanitary napkins, sanitary pads, disposable diapers, etc., the skin feels good, and the surface is less likely to cause liquid residue. 'The liquid does not easily flow on the surface' and shows good. Absorption performance. In another embodiment (second embodiment) of the method for producing a nonwoven fabric of the present invention, the fiber having reduced hydrophilicity by heat of the present invention can be used by any method (for example, carding or air laying). After the web is formed by the method, the spunbond method, or the like, or after the web is not woven, only the web or the single side of the non-woven fabric is subjected to heat. The treatment was carried out to obtain a non-woven fabric in which one side was relatively 145547.doc •23-201030204 water-based, and gradually became hydrophobic toward the other-side side, and had a hydrophilicity gradient in a plurality of stages or continuously in the thickness direction. As a method of heat treatment on only one side, the method of heating the temperature of the sheath to the temperature above the melting point of the sheath resin is only in contact with the early surface of the mesh or non-woven fabric during transport; or trying to make hot air The method of blowing the hot air of the temperature above the bright point of the polyethylene resin to the surface side of the mesh or the non-woven fabric without passing through the back side of the mesh or the non-woven fabric in the conveyance. The hydrophilicity is surely changed. In terms of point, it is also preferable that the temperature of the polyethylene resin is 10 degrees lower than the temperature of the above-mentioned polyethylene resin, and it is particularly preferable that the melting point of the above-mentioned polyethylene resin is better.熔点The melting point of the above polyethylene resin is +5. (: Above. As a non-woven method of the mesh, various known non-woven methods such as spunlace, needle-punching, chemical bonding, and point-like embossing can be used. The non-woven fabric which is relatively hydrophilic on one side and hydrophobic on the other side according to the present embodiment, for example, when the hydrophobic side faces the skin side, is used as a menstrual sanitary napkin, a sanitary pad, When the surface material of an absorbent article such as a disposable diaper is discarded, since the drainage liquid does not easily remain on the hydrophobic surface in contact with the skin, the touch is not deteriorated when the coarse fiber is used, and the number of fibers is reduced. The concealing property is deteriorated, and also has a tactile sensation and a whiteness, and the stickiness in use is lowered. The hydrophilicity of the fiber in the present invention, which is reduced by heat, or the mesh containing the same, is hydrophilic. Reduced by heat treatment. The hydrophilic portion or the hydrophilic portion of the nonwoven fabric of the present invention is only required to have a hydrophilicity reduced by heat treatment 145547.doc -24 - 201030204

The part is relatively high in hydrophilicity. Further, the portion of the hydrophobic portion or the hydrophobic portion may be a portion having a lower hydrophilicity than a portion having a lower degree of hydrophilicity by heat treatment or having a lower degree of hydrophilicity. The reduction in the hydrophilicity is as long as the hydrophilicity is lowered as compared with that before the heat treatment. The decrease in hydrophilicity is synonymous with the increase in contact angle. Wherein, the hydrophilicity of the mesh or the non-woven fabric before the hydrophilicity is lowered (the hydrophilic portion of the finished non-woven fabric is also the same), preferably, the contact angle of water with respect to the fiber is 40 to 70 degrees, more preferably 6〇~7〇 degrees. On the other hand, the portion where the degree of hydrophilicity is lowered (the same is also the same for the hydrophobic portion of the finished non-woven fabric), it is preferred that the contact angle of water with respect to the fiber is preferably 6 〇 to 9 〇, more preferably 7 〇. ~85 degrees. Here, the decrease in hydrophilicity means that the difference in contact angle is 2 degrees or more, preferably 5 degrees or more, more preferably 10 degrees or more. The non-woven fabric having a reduced partial hydrophilicity of the present invention can be formed into a three-dimensional shape by secondary processing, and further, additional processing such as partial hydrophilization treatment can be suitably performed. [Method for Measuring Contact Angle of Water with Fiber] The contact angle of water with respect to fibers was measured as follows. As the measuring device, an automatic contact angle meter MCA-J manufactured by Kyowa Interface Science Co., Ltd. was used. Distilled water was used in the measurement of the contact angle. The amount of liquid ejected from the water ejecting method (the pulse ejector CTC_25 manufactured by Cluster Technology, Inc., having a diameter of 25 μm) was set to 2 μL, and water droplets were dropped directly above the fibers. Record the status of the drop with a high-speed video device connected to the camera. For the purpose of image analysis or image analysis, the video device is preferably a personal computer with a high-speed 145547.doc •25- 201030204 capture device. In this measurement, images are recorded in units of 17 msec. For the original image of the water droplets dropped onto the fiber in the recorded image, the software FAMAS is used (the version of the software is 2·6·2, the analysis method is the droplet method, and the analysis method is the θ/2 method, the image The processing algorithm is non-reflective, the image processing image mode is frame, the threshold level is 2〇〇, and the curvature correction is not performed.) The image of the incoming light image is calculated to calculate the angle between the surface of the water contact and the fiber. 'As a contact angle.

Further, the sample for measurement (the fiber obtained by taking out from the nonwoven fabric) is located at the top of the convex portion shown in Fig. 3(b), the top of the convex portion (four), the vicinity of the concave portion Ρ3, and the back surface (flat surface). The fiber of the corresponding portion 9 of the convex portion of 10a is cut from the outermost layer by a fiber length of 1 mm, and the fiber is placed on the sample stage of the contact angle meter, and maintained at a level, and two different places are determined for each fiber. Contact angle. In each of the above-mentioned parts, the contact angle of N = 5 was measured to the position after the decimal point, and the average value of the measured values at 10 points (rounded to the second decimal place) was defined as the contact angle of each fiber.

The non-woven fabric 10 according to another embodiment of the present invention is a non-woven fabric as described below, that is, as a constituent fiber, in addition to the above-mentioned thermally extensible composite fiber, "the length is not substantially extended by heating. The accommodating composite fiber of the sturdy, the heat-fusible composite fiber is an adherent or hydrophilizing agent' and has a contact angle with water of 50 to 75. . Non-woven fabric 1 〇, in the form shown in ^(4) and Fig. 3(b), and the above-mentioned non-woven fabric 145547.doc -26- 201030204, with or without thermal embossing, ultrasonic embossing, and the like. On the other hand, the convex portion 119 is formed as an unjoined portion. The thickness of the recess 118 is smaller than the thickness of the projection 119. The convex portion 119 is formed in a shape that is raised toward the surface side of the nonwoven fabric 1 (the upper surface side in Fig. 3(b)). The convex portion 119 is filled with the constituent fibers of the nonwoven fabric 119. Non-woven fabric 1优异|Excellent absorption performance and volume recovery. That is, the present inventors have further studied the non-woven fabric using the heat-extensible fiber as a raw material, and found that the flexural modulus of the heat-extensible fiber is lower than that of the ordinary heat-fusible fiber, and therefore, When the non-woven fabric is subjected to a load in the thickness direction thereof, the volume thereof is reduced, and the distance between the fibers is reduced by the H-direction of the bean, and the non-woven fabric having such a reduced volume is used as, for example, the surface sheet # of the absorbent article. The short distance between the fibers causes the permeability of the liquid to be impaired, and the discharged liquid remains in the non-woven fabric, and the liquid easily contacts the skin that abuts the non-woven fabric.

By combining the above-mentioned heat-expandable composite fiber with a non-thermally extensible heat-fusible composite fiber, and then controlling the hydrophilicity of the heat-solubility composite fiber, it is possible to provide a load due to the thickness direction of the nonwoven fabric. A non-woven fabric excellent in volume recovery when the thickness is reduced. Non-woven 1G, which is caused by hot air blowing ^ is higher in volume recovery. #非热弹性性 (4) The conjugate composite fiber (hereinafter, also referred to as a heat-soluble composite fiber) is effective so that its contact angle with water is 5 〇 "75: preferably 55 to 75. Better, "~ is. In this way, the hydrophilicity and hydrophobicity of the solute composite fiber are controlled. In the case of a fiber having a contact angle with water of less than 50, that is, a case of a fiber having an excessively high hydrophilicity, 145547.doc -27-201030204, when the fiber is used as a surface sheet such as an absorbent article, Although the body fluid can be prevented from being on the surface of the cloth (four), the desired liquid permeability or the body fluid absorbed by the degree is not reversed to the surface side, and the body fluid easily remains in the nonwoven fabric. Conversely, the contact angle with water exceeds 75. In the case of a fiber, that is, in the case of a fiber having an excessively high hydrophobicity, although the liquid permeability is good and the body fluid once absorbed can be prevented from flowing back toward the surface side, the body fluid easily flows on the surface of the nonwoven fabric. The contact angle of water with respect to the heat-fusible composite fiber is measured from the non-woven fabric of each part shown in Fig. 3 (b) by taking out only the heat-fusible composite fiber. In order to control the contact angle of water with respect to the heat-fusible composite fiber, a hydrophilizing agent may be attached to the fiber. The adhesion of the hydrophilizing agent can be achieved by applying a hydrophilizing agent to the surface of the fiber, or by kneading a hydrophilizing agent into the tree constituting the fiber, and spinning the resin. As the hydrophilizing agent, the same as the hydrophilizing agent used in the technical field can be used. Typical examples of such a hydrophilizing agent are various surfactants. The hydrophilic agent is attached to the heat-fusible composite fiber, and from the viewpoint of improving the hydrophilicity of the portion which is not hydrophobized, it is preferable that the mass of the heat-fusible composite fiber is 〇_1 to 0.6. The mass% is more preferably 02 to 〇5 mass%. As the surfactant, the same surfactant as that used for the thermally extensible composite fiber described above can be used. In particular, as a surfactant for obtaining a desired hydrophilicity, polyoxyethylene alkyl decylamine, stearyl phosphate potassium salt, glycerin fatty acid 145547.doc 201030204 ! comparison =: 埽 _, polyglycerol single Burnt compound, etc. Further, as such μ, 甘 =··························································· The combination of the meta-surfactants may include a surfactant such as ruthenium, and a surfactant such as other surfactants, and may further comprise a mixing ratio of the ❹ 1 extensible fiber to the heat-soluble composite fiber ( The former/post) is a factor that affects the hydrophilicity and hydrophobicity of the nonwoven fabric as a whole; it is also easy to have the volume recovery property when the hot air is blown to the nonwoven fabric:: For these points of view, non-woven = (4) "mixing ratio of the fibers (the former / the latter) two 30 / 70 ~ 7 coffee, especially good 4 / 60 ~ 60 / 40. ] Good defect = woven Γ 10, medium ' makes it harder to produce liquid residue in the non-woven fabric. It not only controls the water relative to the above-mentioned heat-reducing composite fiber @ but also controls the water relative to the thermal elongation. Fiber contact. The money point ^, (4) is such that the contact angle of the water with respect to the heat-extensible fiber of the residual cloth 3 becomes 4 〇 to 9 〇. , :-. Especially good is 65~75. The heat is controlled to be hydrophilic and hydrophobic. The method of picking up (4) is as described above. A hydrophilic sword containing a surfactant or the like may be attached to the heat-extensible fiber for the hydrophilicity required. It is preferred to use a combination of the two surfactants as the interfacial activity of the thermally extensible fiber with respect to the non-woven fabric 1G', preferably with a contact angle of 145,547. Doc •29- 201030204 The above range is conditional on the side of the convex portion 9 from the top P1 toward the side of the non-woven fabric 10a', that is, from p1 to p3 in Fig. 3(b), and from 3 toward Q, the contact angle of the heat-extensible fiber with water gradually decreases. Thereby, non-woven fabric becomes more difficult to produce liquid residue. The gradient of the contact angle as described above can be achieved by a method of manufacturing a nonwoven fabric by a method described later. Regarding the heat-fusible composite fiber of the nonwoven fabric 10, the contact angle of the heat-fusible composite fiber with water is 50 to 75. The range of the heat-melting composite fiber in the convex portion 119 from the top toward the back side 1a side of the nonwoven fabric, that is, from P1 toward P3 and from P3 toward Q in Fig. 3(b) The contact angle does not change or gradually increases. This also makes non-woven fabrics more difficult to produce liquid residue. The gradient of the contact angle as described above can be achieved by a method of manufacturing a nonwoven fabric by a method described later. When the contact angle of the heat-expandable fiber and the heat-fusible composite fiber is compared with the same measurement site of the same nonwoven fabric, the difference between the two is less likely to cause liquid residue in the nonwoven fabric. It is preferably 25. Within the range, especially good is 20. Within, especially good is 1 5 . Within. In order to set such a difference, for example, the type of the fiber to be used, the method of producing the nonwoven fabric, the type of the hydrophilizing agent, and the amount of adhesion may be appropriately controlled. The non-heat-expandable heat-fusible composite fiber which is used as a raw material in the nonwoven fabric 1 (V) contains two components having different melting points and is subjected to elongation treatment. The hot-melt composite Even if the fiber is given heat, its length does not substantially elongate. It is clear from the results of the examples described later, 145547.doc • 30-201030204 By using the heat-expandable fiber cloth 10, the composite fiber is used as a composite fiber. It is not very woven. The volume of the 10 people with hot air is restored to the non-woven fabric 1〇|, at the intersection of the hot-melt composite fibers of the 119' hot-extensible fibers at the + point, 埶M m 4 And the heat-extensible fiber and the enamel, and the knives are hot-melted by the hot air method. The volume recovery property when the hot air is blown is remarkable, and the HZ surface is not easy to fluff. Non-woven (four), scanning electron microscopy, 窣 窣 性 复合 composite fiber #= Whether the intersection is hot married.

· 糸匕3 is a melting point component and a low-melting component, and the low-melting component is in the fiber table φ 3» 5 I 雔 4... less—a two-component composite fiber that continuously exists in the longitudinal direction. The form of the human alpha complex fiber may be in the form of a core type or a side-by-side form. The heat-fusible composite fiber system (i.e., the stage before the non-woven fabric 1G) is subjected to elongation treatment. Here, the extension processing refers to an extension operation in which the stretching ratio is about 2 to 6 times as described above. The temperature of the heat-dissolving composite fiber (4) is preferably close to the heat-expandable fiber, whereby the heat-extensible fibers, the heat-fusible composite fibers, and the heat-extensible fibers and heat-melting properties. The composite fiber can be smoothly dissolved. From this point of view, the temperature difference between Τ1 and Τ2 is preferably 2 when the sinter temperature of the hot-melt composite fiber is T1 and the fusion temperature of the heat-expandable fiber is T2. ( Within rc. Furthermore, since it is not easy to measure the melting temperature of the fiber rigorously, the melting point of the tree-shaped enamel (that is, the resin having a low melting point) associated with the fusion is used instead of the melting temperature. .doc -31 - 201030204 The measurement method is as described above. From the viewpoint of smoothly melting the thermally extensible fiber and the heat-fusible composite fiber, it is preferred that the heat-fusible fiber towel has a composition of The second resin component in the heat-expandable composite fiber is the same resin or has compatibility in the case of different kinds. The nonwoven fabric 10 may be in addition to the heat-expandable fiber and the heat-fusible composite fiber described so far. Other fibers are included. Examples of such fibers include fibers which are not originally heat-fusible (for example, natural fibers such as cotton or pulp, 嫘t or acetate fibers), etc. These fibers are preferably used in comparison with non-woven fabrics. Weight is It is contained in an amount of 5 to 30% by weight or less. These fibers are included in the non-woven fabric in order to improve the inhalation property of the liquid when the nonwoven fabric 10 is used as, for example, a surface sheet of an absorbent article. A preferred manufacturing method for facing the non-woven fabric 1 will be described with reference to Fig. 4. First, the mesh 12 is formed using a specific web forming mechanism such as a card U. The mesh 12 is included before stretching. In the state of the heat-expandable composite fiber and the heat-fusible composite fiber, as the method of forming the mesh, in addition to the card shown in Fig. 4, it is also possible to use the air stream to transport the short fibers and deposit them on the mesh. A method known in the art (air flow method), etc. The slider 12 is fed to the heat embossing device 13, where the hot embossing device is implemented. The hot embossing device 13 includes a pair of rollers 14, 15. The roller 14 is an engraving roller which forms a rhombic lattice-like convex portion on the circumferential surface. On the other hand, the roller 15 is a smooth roller (support roller) whose circumference is flat. The rollers 14, 15 can be heated to a specific temperature. Texture processing can be thermally extensible in the web 12 2,145547.doc •32· 201030204 2 of the fiber mixture, the melting point of the fat component is -20° C or more, and the melting point of the resin component of the second resin is not reached. Further, the hot embossing process can be performed on the mesh 12 The heat-melting composite fiber has a melting point of -2 〇t or more and a temperature at which the high melting point component is not reached. The heat-expandable composite fiber and the hot-melt complex δ fiber are the second. When the melting point of the component is different, the range of the lower melting point is additionally used. The 'hot embossing process can be performed at a temperature at which the heat-expandable composite fiber exhibits thermal elongation. By heat embossing, the mesh 12 is processed. Then, the elongated twin composite fiber and the heat-fusible composite fiber are joined. 瘳HA, the plurality of joints are formed in the circumferential body 12, and the heat-bonding nonwoven fabric 16 is formed. This joint portion serves as a target non-woven fabric 1 and a concave portion us. In the joint portion of the heat-bonding nonwoven fabric 16, the heat-expandable composite fiber and the heat-fusible composite fiber are joined by pressure bonding. Both the thermally extensible conjugate fiber and the heat-fusible composite fiber outside the joint portion are in an unjoined free state. Further, the elongation of the heat-expandable composite fiber has not yet occurred. Then, the heat-bonding nonwoven fabric 16 is conveyed to the mouth of the hot air blowing device. The hot-bonding nonwoven fabric 16 is subjected to hot air processing in the hot air blowing device 17. That is, the hot air person attachment device 17 is configured such that the hot air heated to a specific temperature penetrates the heat-bonding nonwoven fabric 16. The hot air processing is performed at a temperature at which the heat-expandable composite fiber in the heat-bonding nonwoven fabric 16 is elongated by heating. Further, it is a point of intersection of the heat-extensible composite fibers in a free state in a portion other than the joint portion of the heat-bonding nonwoven fabric 16, a point of intersection of the heat-solubility composite fibers, and a heat-expandable composite fiber and heat-solubility. The intersection of the composite fibers is carried out at the temperature of the hot point. In particular, it is necessary to set the temperature to a temperature at which the melting point of the first deer component of the heat-expandable composite fiber and the high-melting fused composite fiber of the heat-melting composite fiber is 145547.doc •33· 201030204. The hot extensible conjugate fiber existing in a portion other than the joint portion is elongated by hot air processing as described above. Since the heat-expandable composite fiber is fixed by a joint portion, it is stretched between the joint portions. Further, since the heat-expandable composite fiber is fixed by the joint portion, the elongated portion of the elongated heat-expandable composite fiber loses the moving place in the plane direction of the heat-bonding nonwoven fabric 16, and moves in the thickness direction of the nonwoven fabric μ. . Thereby, the convex portion 119 is formed between the joint portions, and the fabric is woven and becomes bulky. Further, the nonwoven fabric 10 has a three-dimensional appearance in which a plurality of convex portions 119 are formed. Further, by hot air processing, the intersection of the thermally extensible composite fibers in the convex portion 119, the intersection of the heat-fusible composite fibers, and the intersection of the thermally extensible composite fiber and the heat-fusible composite fiber are respectively melted by heat fusion. Engage and join. By controlling the hot air conditions, the hot air processing is terminated before the heat-expandable composite fiber has not been completely elongated, and a nonwoven fabric containing the heat-extensible composite fiber which can be further elongated in the subsequent heat treatment step can also be obtained. Therefore, the non-woven fabric 10' is made of a heat-extensible composite fiber which can be elongated by heat, and is present in a state which can be elongated by heating, and the length thereof has been heated (to some extent) Fiber in the state of elongation. When the web of the heat-extensible fiber to which the hydrophilizing agent is preliminarily attached is subjected to hot air processing to stretch the heat-expandable composite fiber, the amount of hot air is controlled to be low, so that FIG. 3 The top P1 of the non-woven fabric 10' shown in (b) faces P3 and faces the Q from P3, and the applied heat is different. Further, as a result of the study by the inventors of the present invention, it has been found that the portion where 145547.doc - 34 · 201030204 / the degree of the dish is applied to the fiber, the elongation is larger, and the hydrophilicity is lowered. Therefore, in the manufacturing method shown in FIG. 4, for example, the greater the elongation of the elongated twin composite fiber on the side of the blowing side of the hot air, the greater the decrease in hydrophilicity due to the blowing of the hot air to the nonwoven fabric 10' Since the surface of the convex portion 119 and the concave portion 4118 is formed, the degree of decrease in hydrophilicity toward the convex portion P is increased as the obtained non-woven fabric 1〇. Since the decrease in hydrophilicity is synonymous with the increase in the contact angle, in other words, the convex portion 119' of the thermally extensible composite fiber is directed from the top portion P1 toward the non-woven fabric 10, on the side of the back surface 10a, that is, in Fig. 3(b). The contact angle of the heat-expandable composite fiber gradually decreases from P1 toward P3, i from p3 toward Q. By forming a "web having a hydrophilicity reduced by heat" of the present invention into a sheet material such as a mesh or a non-woven fabric, and performing a heat treatment partially, it is possible to efficiently produce a part of the hydrophilicity without a complicated device. The other P blade is a sheet material of a hydrophobic It or the like. Further, the hydrophilizing agent attached to the surface of the core-sheath type conjugate fiber is not limited to polyethylene glycol and polyethylene glycol fatty acid ester, and various hydrophilizing agents can be used. The non-woven fabric of the present invention can make full use of it, and can be efficiently manufactured without complicated devices. And the hydrophilicity or hydrophobicity of the heat-expandable composite fiber is not in the thickness direction and/or plane between one portion of the non-woven fabric and another portion. It has a hydrophilic gradient in the direction and is used in various applications such as surface materials for absorbent articles. According to the method for producing a nonwoven fabric of the present invention, it is possible to efficiently produce a partially hydrophilic or otherwise partially hydrophobic web or nonwoven fabric without a complicated apparatus. In addition, it is possible to produce a non-woven fabric in which the water portion is formed into a desired pattern by changing the portion of the heat treatment to the surface of each of the β-β. The non-woven fabric of the present month can be used in various fields, such as a part having hydrophilicity and a part having a hydrophilicity gradient such as a hydrophobic or hydrophilic reducing portion. Further, the non-woven fabric 10 described above can be applied to various fields in which the uneven shape, the degree of opacity, and the ease of liquid permeability are utilized. For example, it can be suitably used as: surface sheet of absorbent articles (especially disposable sanitary articles) for absorbing the liquid discharged by the body, such as menstrual sanitary napkins, sanitary pads, disposable diapers, incontinence guards, etc. A sheet (second, a sheet disposed between the surface sheet and the absorbent body), a back sheet, a leak-proof sheet, or a human cleaning sheet, a sheet for skin care, and a wipe for a substance. The non-woven fabric 10 used in the state before the use is usually stored in a state of being wound into a roll. Therefore, in the case of the non-woven fabric 10, the bulkiness is reduced. Therefore, when the non-woven fabric 10 is used, it is preferable to blow the hot air to the non-woven fabric 10 in a manner of air supply, so that the reduced volume is recovered. In terms of volume recovery, it is preferred to use hot air which is blown to the nonwoven fabric 10. The hot air which is not the melting point of the second resin component in the heat-expandable composite fiber and which is at a temperature above the melting point of 5 or more. # is a volume recovery method of the non-woven fabric as described above, for example, Japanese Patent Laid-Open No. 2004-137655, Japanese Patent Application Laid-Open No. Hei No. Hei No. Hei. The technique described in the publication No. 231609 or the like. The basis weight of the web or nonwoven fabric used to make the nonwoven fabric can be selected according to the specific use of the target nonwoven fabric. The final basis of the 145547.doc • 36 · 201030204 non-woven fabric is l〇~8〇g/m2, especially 15~6〇g/m2 〇❿ For non-woven 10, 10, 'will When it is used as, for example, a surface sheet of an absorbent article, its basis weight is preferably from 10 to 80 g/m2, particularly preferably from 15 to 60 g/m2. In the case of the same application, the thickness of the non-woven fabric 1 〇, the convex portion U9 (the thick portion 19) is preferably 0 5 in the state where the volume is restored by the hot air. 3 mm, particularly good is 0.7~3 _. On the other hand, the thickness of the concave portion 118 (the portion (8) having a small thickness is preferably ~4 mm, particularly preferably GG2 to G2_. Further, the thickness of the concave portion 118 is before and after the hot air is blown, and (4) (10) The thickness is measured by observing the non-woven fabric and the longitudinal section. First, the non-woven fabric is cut into a size of 1 〇〇 χΐ〇〇 而 to obtain a measurement piece. On the measurement piece, 12 5 g (diameter is called... The plate was subjected to a load of 49 Pa. The longitudinal section of the non-woven fabric was observed with a microscope (manufactured by KEYENCE Co., Ltd., 'VHX side) to observe the convex portion 119 and the concave portion 118. The thickness of s j. Further, when a non-woven fabric is formed with a convex portion (a portion having a thick thickness) and a concave portion (a portion having a thin thickness), the "thickness of the non-woven fabric" means a convex portion (thickness is thick) The thickness of the portion of the non-woven fabric 1〇, 1〇| is the embossing ratio (the embossed area ratio, that is, the total area of the concave shading area is relative to the non-woven fabric 10, 10). 'Overall ratio' table, eight f pairs of non-woven fabrics 10, 10' Pine saltiness and strength have an impact. In view of the invitation to the temple, Lu, non-woven 10, 10, the graining rate is better 5 ~ 35. /, the victory is particularly good 疋 1 〇 ~ 25%. The smear rate 145547.doc -37- 201030204 was measured by the following method. First, a non-woven fabric 1 (), 1 (), a surface enlarged photograph was obtained using a microscope (manufactured by KEYENCE Co., Ltd., VHXJOO) The surface magnified photograph is compared with the scale, and the size of the embossed portion in the entire area T of the crotch portion is measured to calculate the embossed portion area U. The embossing rate can be calculated by the calculation formula (υ/τ) χ 100. An absorbent article for absorbing a liquid discharged from a body, typically comprising a surface sheet, a back sheet, and a liquid retaining absorbent disposed between the sheets. The nonwoven fabric of the present invention is used as a surface sheet. The absorbent body and the back sheet of the present invention can be used without any particular limitation. For example, # is an absorbent body: a fiber assembly containing a fibrous material such as pulp fibers or an absorbent member is retained therein. Polymerizer Be coated with thin paper or woven fabric covering sheet and the winner. As the back sheet,

A film of a thermoplastic resin or a liquid impervious or water repellent sheet # such as a film or a layer of a nonwoven fabric may be used. The back sheet may have water based gas permeability. The absorbent article may further comprise various members corresponding to the specific use of the absorbent article. Such components are well known to the practitioner. For example, when the absorbent article is placed on a disposable diaper or a menstrual sanitary napkin, one or two or more pairs of three-dimensional protection may be disposed on the left and right sides of the surface sheet. The preferred embodiment based on the present invention. The present invention has been described, but the present invention is not limited to the above embodiments. For example, when the embossed portion is formed in the non-woven fabric, the pattern of the embossed portion can be taken 145547.doc -38· 201030204 instead of the lattice pattern with any pattern such as stripe shape, dot shape, checkerboard pattern, spiral shape, etc. . The shape of each dot formed in a dot shape may be any shape such as a circle, an ellipse, a triangle, a quadrangle, a hexagon, or a heart. Further, a square or rectangular lattice shape or a hexagonal pattern may be used. Further, in the manufacturing method of the non-woven fabric shown in Fig. 4, the embossing roll and/or the smoothing roll may be heated during the embossing to produce a woven fabric having a reduced hydrophilicity of the embossed portion and/or its periphery.

In addition, when the non-woven fabric of the present invention is used in the case of diapers or sanitary napkins, wipes, and other products, it is possible to apply the required portions before, during, and during the manufacturing process. Heating, so that some or all of the hydrophilicity of the nonwoven fabric of the present invention is lowered, or it may be made water-repellent. Further, in the above embodiment, the joint 4 (concave 4118) is formed by hot embossing. However, ultrasonic embossing is also used instead of the hot embossing to form the joint portion. Further, the non-woven fabric is not limited to a single-layer structure, and a multilayer structure in which a laminate-layer or two or more other nonwoven fabrics are formed on a non-woven fabric to form a single body may be employed. EXAMPLES Hereinafter, the present invention will be described in more detail by way of examples. However, the scope of the invention is not limited by the embodiment. [Example 1] Obtaining a homo-core type (1) Hydrophilicity The fiber produced by heat reduction was melt-spun under the conditions shown in Table 1 145547.doc • 39-201030204 type composite fiber The obtained conjugate fiber was not subjected to an elongation treatment, and then impregnated into an aqueous solution of a hydrophilizing agent of the type shown in Table 1, and the type and amount of the hydrophilizing agent shown in Table 1 were adhered. The term "extension treatment" as used herein refers to an extension operation of about 2 to 6 times which is usually performed on the undrawn yarn obtained after melt spinning. Then, after mechanical crimping, the fibers were cut to obtain staple fibers (fiber length of 51 mm). At the time of spinning, in order to promote the solidification of the resin constituting the sheath portion, cold air of 2 〇t is blown to the molten resin sprayed from the spinning nozzle. With respect to the obtained fiber, the crystallite size of the constituent resin (polyethylene resin) of the crotch portion was measured by the above method. (2) Manufacture of non-woven fabric Using the obtained fiber, a nonwoven fabric was produced by the method shown in Fig. 4. The specific manufacturing method is as follows. First, a crepe is added to the web formed by using the card. The press working was performed so as to form a grid-like compact and the area ratio of the embossed portion (compressed portion) was 22%. The force of the grain processing dent rfe * .

The outline is shown as 11 (rc. The second is hot air processing. The hot air processing system is carried out - A long-time embossing side of the embossing surface is blown with hot air heat treatment. The hot air processing demon, _ ..., processing ^^ degree is shown in Table 1. The obtained iron is not; ^ 4 > r ^ thinner part (embossed part) 18 and other thicker parts - knife 19, and one side The concave surface 1〇a having a large undulation of the convex portion 119 and the concave portion 118 is formed. The surface 10b has a substantially flat surface. [Examples 2 to 24 Comparative Examples 1 to 6] The fibers shown in Table 1 were used. And the conditions shown in Table 1 were used. Except that 145547.doc 201030204, a non-woven fabric was obtained in the same manner as in Example 1. The non-woven fabrics obtained in Examples 1 to 24 were formed by the hot air method at the intersection of the constituent fibers. Further, the fibers contained in the non-woven fabrics obtained in Examples 1 to 24 were judged to have thermal extensibility by the method described above, and as a result, it was confirmed that they contained fibers having thermal extensibility. And the hydrophilizing agents A to S shown in Table 2 are as follows. [Hydrophilizing agent] A : Polyoxyethylene (additional molar number 2) stearylamine (manufactured by Kawaken Fine φ Chemical Co., Ltd., AMISOL SDE) and stearyl betaine (manufactured by Kao Co., Ltd., AMPHITOL 86B) at 50% by weight : 50% by weight of the obtained hydrophilizing agent B: alkyl phosphate dipotassium salt (manufactured by Kao Co., Ltd., potassium hydroxide neutralized product of GRIPPER 4131) 100% by weight of hydrophilizing agent C: alkyl phosphate Dipotassium salt (manufactured by Kao Co., Ltd., potassium hydroxide neutralizer of GRIPPER 4131) and sodium sulphonate (manufactured by Kao Co., Ltd., LATEMUL PS) at 50% by weight: 50% by weight. /〇• Blending The obtained hydrophilizing agent D was obtained by using polyoxyethylene alkylamine (manufactured by Kao Co., Ltd., AMIET 302) and diglycerin laurate (Riken Vitamin Co., Ltd., RIKEMAL L-71-D) at 50% by weight: 50% by weight of the obtained hydrophilizing agent E: stearyl ether phosphate dipotassium salt (manufactured by Toho Chemical Industry Co., Ltd., PHOSPHANOL RL-210 potassium hydroxide neutralized product) and diglycerin laurate (Riken Vitamin Co., Ltd.) Company system , RIKEMAL L-71-D) 145547.doc • 41 - 201030204 50% by weight: 5〇Heavy child% formulated hydrophilizing agent F·Polyoxyethylene (force σ into mole 2) hard fat Amine (Kawaken Fine

Chemical Co., Ltd. manufactures 'AMIS0L SDE) and dialkyl base succinate sodium salt (PELEX OT_P manufactured by Huayusheng Co., Ltd.) formulated with 50% by weight: 50% by weight of hydrophilizing agent G: Polyoxyethylene polyoxypropylene modified polychlorite (manufactured by Shin-Etsu Chemical Co., Ltd., KF-6012) and dialkyl-based succinic acid sodium salt (made by Kao Co., Ltd. 'PELEX 〇Τ_Ρ) The obtained hydrophilizing agent is formulated in an amount of 50% by weight: 50% by weight: diglycerin stearate (Rikemary Vitamin Co., Ltd., RIKEMAL S-71-D) and dialkyl succinyl succinate salt (Pelax OT-P manufactured by Kao Co., Ltd.) formulated with 50% by weight: 5% by weight of the hydrophilizing agent I: Dehydrated Yam fermented palm oleic acid vinegar (made by Kao Co., Ltd.) RHEODOL SP-P10 And the second base of the succinic acid sodium succinate (made by Kao Co., Ltd., PELEX OT-P) is 50% by weight: 50% by weight. Hydrophilic agent J obtained by blending / 聚: polyoxyethylene (additional moieties 2) stearylamine (manufactured by Kawaken Fine Chemical Co., Ltd., AMIS0L SDE) and diglycerin lauric acid vinegar (Riken Vitamin Co., Ltd.) Manufacture, RIKEMAL L-71 - D) 50% by weight: 50% by weight of the obtained hydrophilizing agent K ·· Polyoxyethylene (additional Mozun number 2) stearylamine (Kawaken Fine

Manufactured by Chemicals Co., Ltd., AMISOL SDE) and sorbitan monolaurate (manufactured by Kao Co., Ltd.) RHE〇D〇L SP_145547.doc -42- 201030204 L10) at 50 聋. /° : 50 weight. / (> The hydrophilizing agent L obtained by blending: polyoxyethylene alkylamine (Manufactured by Kao Co., Ltd. 'AMIET 302) and sorbitan monolaurate (made by Kao Co., Ltd.) RHE〇D〇L Si>-L10) 50% by weight: 50% by weight of the obtained hydrophilizing agent Μ: polyoxyethylene polyoxypropylene modified polyfluorene (manufactured by Shin-Etsu Chemical Co., Ltd., KF-6004) and polyoxyethylene Lauryl ether (manufactured by Kao Co., Ltd., EMULGEN 102KG) formulated with 50% by weight: 50% by weight of the obtained hydrophilizing agent Ν: polyoxyethylene polyoxypropylene modified polyphosphorus (manufactured by Shin-Etsu Chemical Co., Ltd., KF_6〇〇4) and diglycerin laurate (Riken Vitamin Co., Ltd. 'RIKEMAL L_71_D) formulated with 50% by weight: 50% by weight of the obtained hydrophilizing agent 〇: polyoxyethylene polyoxypropylene modified polylith Oxygen (manufactured by Shin-Etsu Chemical Co., Ltd., KF-6004) and sorbitan monolaurate S (manufactured by Kao Co., Ltd. 'RHEODOL SP-L10) at 50% by weight: 50% Hydrophilizing agent P: Dehydrated sorbitan monolaurate (manufactured by Kao Co., Ltd., RHEODOL SP-L10) and polyoxyethylene stearyl ether (manufactured by Kao Co., Ltd., EMULGEN 306P) at 50% by weight: 50% by weight. Hydrophilizing agent Q: diglyceryl stearate (Rikemary S-71-D, manufactured by Riken Vitamin Co., Ltd.) and sorbitan monolaurate (manufactured by Kao Co., Ltd., RHEODOL SP-L10) 50% by weight: 50% by weight 145547.doc • 43· 201030204 % The obtained hydrophilizing agent R: glyceryl stearate (Riken Vitamin Co., Ltd., RIKEMAL S-7 Bu D) and polyoxyethylene lauryl ether (Manufactured by Kao Co., Ltd., EMULGEN 102KG) The hydrophilizing agent S was prepared by dispersing 50% by weight: 50% by weight: distearyl dimethyl ammonium chloride (manufactured by Kao Co., Ltd., QUARTAMIN D86P) and polyoxygen Ethyl stearyl ether (manufactured by Kao Co., Ltd., EMULGEN 3 06P) formulated with 50% by weight: 50% by weight of the hydrophilizing agent [Evaluation] For the nonwoven fabric obtained in the examples and the comparative examples, the above-mentioned It The contact angle of the fiber is measured by the method. The liquid residual amount and the liquid flow distance are measured by the method described later. The results of the results are shown in Tables 1 and 2, and the "contact angle" in Tables 1 and 2 is blocked. The convex portion top portion P1" is a measurement result of the contact angle between the fibers of the top portion P1 (the top portion of the thick portion) of the convex portion 119 of the uneven surface 10b and the distilled water, and the "near portion P3" is a self-embossed portion (thickness The edge of the thin portion is measured toward the inside of the top portion P1, which is the inner side of the i mm (near the thin portion). The mid-abdominal P2 is the measurement result of the middle portion between P1 and P3, and the "back q" It is a measurement result of the part of the flat surface 10a corresponding to the top part of the convex part. 145547.doc 201030204

Example Qu 2 CU CU s 280 1400 ο m cn vn <s • n Ο 00 〇ν〇m Ο inch 〇 CTi CO »n «λ 2 ω cu cu CLn s | 280 | | 1400 | X ^t ο m Fn In (N •n SO <s ο 00 cup 〇 inch ο inch 〇 in is v〇es 00 »nm cu rj CU Pn s cs 1400 o 守ο r"> cn •η <S VD cs ο 00 ο VO 寸 寸 inch 〇 \〇00 V〇<N s <5 CM mountain & 5 Oh CU sg (N | 1400 | EX) 兮ο ro rn <S u-» (N ο 00 ο VO m守ο 〇Ό *n CM s = pq cu CL. 0-. sg <S | 1400 | ω 守ο to rn »r> cs •o ο 00 ο VD m beer ο〇00 W*~> »n w> mmm factory Oh Oh CU | 280 1 | 1400 | < mο rn cs ITi (N VO ο 00 1 m 〇0〇1 1 (N Ό v-> CN 〇\ tul cu 3 CU S s <N | 1400 | < inch ο ri »n (N »n cs ο 00 ο *·« u-» inchο 〇〇so s〇CN \〇(N in r3 90 ω cu 3 | PET I * n ΓΑ § <N | 1300 IQ 0.35 m cn jn ir> 00 ο 00 ο VN W-* m inch ο 〇§ g 00 00 l〇00 <s VO »〇m 卜 & 5 PET I 12561 <NI looo | CQ 1 0.35 1 m ro ID 00 VC ο 00 ο v〇co inch ο inch〇00 VD 00 Ό VO »r> CM v〇ω cu 3 cu Oh sg iN | 1300 IU inch ο m cn ir> v〇(N o 卜: ο v〇ro ο 〇P ooo cn <N ir> m 〇J CL, CU § fS | 1300 1 PQ inch ο m ΓΟ *nmv〇JN ν*&gt ; ο vo cn ο 〇 p in p cs fN • nm f<> (N 呀tq cu 5 cu cu s § fS | lioo | < ri- Ο c*^ cn l〇S CN s〇ο VD m inch ο 〇Ο VO mv£> fS m CLh 5 cu (X. § cs | 1300 1 < odd dr*> rn «η 00 <N VO m 〆ο v〇ο 〇CN ΘΟ jn m \〇fN v© 00 V) CN cs ω cu 3 cu cu 3 g <s | 1300 I < inchο CO cn ir> fN (S (N VO ο VO r"> inchο 〇JQ δ cs <N \ 〇(N (N — ω CU 5 On On 3 CN 1400 < 寸ο cn co V~i (N «〇(N v£) ο 00 ο Ό c〇ο 〇 OO o <N s〇(N (S CO ri constituting resin melting point (°c) constituting resin melting point (°c) /*—V 8 cold air (°c) wind speed (m/sec) (m/min) type adhesion amount (%) (dtex) (mm ) /«—sg /—S ο〇 Temperature (°c) Wind speed (m/sec) Processing time (sec) (g/m2) Top of the convex part PI Middle abdomen P2 Concave near the side P3 Back Q (mg) (mm) Sheath core spinning head temperature curing promotion method Traction speed Hydrophilizing agent weaving thickness Thickness fiber length Microcrystalline size contact Xiao (degrees) Fiber thermal elongation embossing (concave) Whether there is embossing processing temperature hot air Processing basis weight (per square meter weight) Contact angle (degrees) Liquid residual amount Liquid flow distance Fiber non-woven evaluation 145547.doc -45- 201030204

(N

VsO UJ 0lh 3 fiu Ou 3 280 1400 1 m rn «Ν ν*ϊ Sn ο οό 〇V0 m ο 〇00 〇\ 00 ON 00 ON 00 ON om rv) >100 Vi cu 2 a. cu | 280 | 宕S | 1400 | Ο ΓΟ ro Vi CN m »n ο οό 〇ΓΟ 对ο inch〇m ITi »〇m ΓΛ o inch ω cu ?3 Cu cu *—< 280 IQ v〇o >n inch Ο m rn (N ο 1 〇 VO m ο 〇 ^ r^i rn rn § ΓΛ Ν (Ν w cu 5 Pu Oh 1 S *r> ob inch ο m rn v*><N ο 1 〇VO m vs ο 〇沄沄沄沄>〇*r>\〇<N tJQ CU 1 PET 1 |256| | 290 | S w-> o v-> CQ 1 0.35 1 rn *n *η 〇\ 00 Ό ο I 〇v〇m 呀ο inch〇00 VO 00 VO 00 VO 00 'sO o <Ν ίΝ — tL] CU cu \〇280 S v-> o v>< inch ο r*S »r> μ CN V〇Ο I 4*ρ 〇v〇甘ο T}· 〇ssmv〇Ό 00 2 Example 5 cu Cu | 280 1 S s | 1400 IC) rn <Ν •η *— Ο οό 〇对ο inch〇 ON \〇m VO v*>»r> »n ζϊ <Ν <Ν <N ω Pm Cu CL· s | 280 1 s | 1400 I σ inch ο m cn *〇CS V*J ο 00VO m 兮ο 〇jn 00 v〇rj 00 fS fS UJ CU 5 Cu & s | 280 | s | 1400 I cu inch ο m cn «r> (Ν %η 〇ο ΟΟ 〇v〇 vs ο 〇o 芬〇jq (Ν (Ν PJ Dh CU cu 5 | 280 | 宕s | 1400 1 ο ο m ro »r> Γ4 v〇«〇ο ΟΟ 〇CO vs ο inch〇»r> so 00 v> \〇» n >nm <Ν S CU 5 cu cu s 280 s | 1400 I inch ο rrj (S «Γ> SO SO ο ΟΟ 〇«Μ VO rf Ο 〇<N ίο 'sO 00 m ΡΠ CS 2 PJ Dm 2 cu cu | 280 | 宕s | 1400 I inch ο cn rn *r>«τ> 5〇ο οό 〇VO ro Ο JO rn 00 VO !〇mm (Ν 00 ω CL 5 cu Cu 280 s | 1400 I hJ vs ο CO CS ·—« ο 00 〇ΓΛ Ο 〇pj δ ON »n »nm (Ν (Ν w w 0. S cu Cu s | 280 1 S s | 1400 I inch ο mr»S •r&gt (Ν *Ti 00 v〇ο 00 〇VO m to ο 〇rn Os v〇00 vo m fN ω cu 5 CU 0- 280 宕| 1400 I ·-» 呀ο rn *Ti r4 tr> s ο οό 4 ^ 〇Ό m 兮ο inch 〇 VO Os \r\ P; ?: constituting the melting point of the resin (°c) (°c) VP Cold air (°C) Wind speed (m/sec) (m/min) Type 1 adhesion amount (%) 1 (dtex) (mm) /—ν £ /«SP 's·^ Temperature (°c Wind speed (m/sec) Processing time (sec) (g/m2) Top of the convex part PI Middle abdomen P2 Concave near the side P3 Back side Q (mg) (mm) Sheath core spinning head temperature curing promotion method Traction speed hydrophilic Thickness of the fiber of the chemical fiber Length of the microcrystal size Contact angle (degrees) Thermal elongation of the weave embossing (embossing) with or without embossing processing Temperature hot air processing basis weight (per square meter weight) Contact angle (degree Liquid Residual Liquid Flow Distance Fiber Nonwovens Evaluation 145547.doc -46- 201030204 [Liquid Residuals] Commercially available menstrual napkins from Kao Co., Ltd. (trade name "LAURIER Dry and Gentle Cleansing Absorption") The surface sheet was removed, and each of the non-woven fabrics of the examples and the comparative examples was laminated, and the periphery thereof was fixed to obtain a menstrual sanitary napkin for evaluation. On the surface of the above-mentioned menstrual sanitary napkin, an acrylic plate having an inner diameter of 1 through hole was overlapped, and a fixed load of 1 〇〇 Pa was applied to the sanitary napkin. Under the load, 3 〇 8 defibrinated horse blood is flowed from the penetration hole of the acrylic plate. 60 seconds after the inflow of the horse blood, the acrylic plate was removed, and then the weight (W2) of the nonwoven fabric was measured, and the difference (W2-W1) between the weight (W1) of the nonwoven fabric before the inflow of horse blood measured in advance was calculated. The above operation was carried out three times, and the average of three times was taken as the liquid residual amount (mg). The amount of liquid residue is an indicator of the degree of skin wetness of the wearer, and the smaller the amount of liquid residue, the better the result. [Liquid Flow Distance] The menstrual sanitary napkin was obtained in the same manner as the above [liquid residual amount]. The test device has a mounting surface of the sanitary napkin that is inclined 45 with respect to the horizontal plane. The placement section. On the placing portion, the sanitary napkin β is placed as a test liquid so that the surface sheet faces upward, and the colored distilled water is dropped onto the sanitary napkin at a speed of “丨〇WO. The measurement is first wetted from the non-woven fabric. The position is the distance from the position where the test body is just absorbed by the absorber. The above operation is performed three times, and the average value of the three times is taken as the liquid flow distance (mm, the liquid flow distance is the liquid is not absorbed by the menstrual sanitary napkin and the wearer The index of the amount of skin contact, the lower the liquid flow distance, the higher the evaluation. Further, the liquid flow distance exceeding 100 mrn is recorded as >1〇〇. 145547.doc •4*7· 201030204 From Table 1 and As a result of 2, it is understood that the non-woven fabric of the non-woven fabric used in the examples has a large crystallite size and a decrease in hydrophilicity by heat treatment. Further, it is understood that the non-woven fabric obtained in the examples is partially The hydrophilicity is lowered to reduce the hydrophilicity, and a hydrophilic gradient is generated, the liquid flow is small, the liquid residue is small, and the absorbability is excellent. [Example 25] The use of FIG. A single-layer non-woven fabric 10 having the structure shown in Fig. 3 is produced. The embossing roll 14 in the apparatus shown in Fig. 4 has a rhombic lattice-like convex portion having a line width of 〇 5. The embossing of the embossing roll 14 The rate of conversion (joining ratio) was 14.1%. As the thermally extensible conjugate fiber and the heat-fusible composite fiber, a non-woven fabric was obtained under the conditions shown in Table 3, as shown in Table 3. Wherein, the intersection of the heat-extensible composite fibers, the intersection of the heat-fusible composite fibers, and the intersection of the heat-expandable composite fibers and the heat-solubility composite fibers are respectively mirrored by a hot air method, for which the obtained The fiber contained in the nonwoven fabric was judged by the method described above, and the presence or absence of the thermal extensibility was confirmed, and as a result, it was confirmed that it contained the fiber having thermal elongation. The heat-expandable composite of the immortal blue m/min (four) speed was melt-spun. After the graft spinning, the aqueous solution of the heat-expandable rehydrating agent is hydrophilized. Then, after the machine is cooled, the fiber is dried by heat treatment, and the fiber is cut to obtain short fibers. (fiber length is 51 mm)e The adhesion amount of the hydrophilizing agent is Μ weight ❶ 4. Further, the production of the fiber material is not carried out (the same applies to the following examples and comparative examples). Further, the term "extension treatment" as used herein refers to the melt spinning. The undrawn yarn obtained after the yarn is usually subjected to an extension of about 2 to 6 times 145547.doc 201030204. [Examples 26 to 28, and Comparative Examples 7 to 12] The fibers shown in Table 3 were used, and Table 3 was used. The nonwoven fabric was obtained in the same manner as in Example 25. In the nonwoven fabric obtained in each of the examples, the intersection of the thermally extensible composite fibers, the intersection of the heat-fusible composite fibers, and the heat were obtained. The intersection of the extensible composite fiber and the heat-fusible composite fiber is thermally fused by a hot air method. Further, with respect to the fibers contained in the nonwoven fabric obtained in each of the examples, the presence or absence of the thermal extensibility was judged by the square method described above, and as a result, it was confirmed that the fibers contained the heat extensibility were contained. The hydrophilizing agents A1 to F1 shown in Table 3 are as follows, respectively. [Hydrophilizing agent] A1: Polyoxyethylene (additional molar number 2) stearylamine (manufactured by Kawaken Fine Chemical Co., Ltd., AMISOL SDE) and alkyl phosphate dipotassium salt (manufactured by Kao Corporation, GRIPPER 4131 potassium hydroxide neutralizer) 50% by weight: 50% by weight of the obtained hydrophilizing agent® B 1 : Diglyceryl stearate (Riken Vitamin Co., Ltd., RIKEMAL S-71-D) And polyoxyethylene lauryl ether (manufactured by Kao Co., Ltd. - EMULGEN 102KG) formulated with 50% by weight: 50% by weight of the obtained hydrophilizing agent C1: polyoxyethylene (additional molar number 2) stearylamine (Manufactured by Kawaken Fine Chemical Co., Ltd., AMISOL SDE) and stearyl betaine (manufactured by Kao Co., Ltd., AMPHITOL 86B) formulated with 50% by weight: 50% by weight of the obtained hydrophilizing agent 145547.doc -49- 201030204 D1 : Polyoxyethylene (additional molar number 2) stearylamine (manufactured by Kawaken Fine Chemical Co., Ltd., AMISOL SDE) and diglycerin laurate (Riken Vitamin Co., Ltd., RIKEMAL L-71-D) 50% by weight: 50 weight Formulation of the obtained hydrophilizing agent E1: polyoxyethylene (additional molar number 2) stearylamine (manufactured by Kawaken Fine Chemical Co., Ltd., AMISOL SDE) and lauryl phosphate dipotassium salt (Dongbang Chemical Industry Co., Ltd. The company manufactures 'PHOSPHANOL ML-200 potassium hydroxide neutralizer) formulated with 50% by weight: 50% by weight of the obtained hydrophilizing agent F1: Lauryl phosphate dipotassium salt (Manufactured by Toho Chemical Industry Co., Ltd., PHOSPHANOL ML -200 potassium hydroxide neutralizer) and dimethyl polyfluorene (manufactured by Shin-Etsu Chemical Co., Ltd. 'KF_96L-0.65CS) 50% by weight: 50% by weight of the obtained hydrophilizing agent 145547.doc 50- 201030204 Manufacturing conditions. 1SII to inch hot wind speed (m/min) d ΤΤ O' o' to ο inch o' to ο o' hot air temperature CC) v〇ΓΛ ν〇ίΛ SO Ό ΛΟ cn v〇ίΛ SO cn so ο m Ό hot embossing temperature CC) ο Ο ο 〇o Ο 〇o ο o 50/50 50/50 50/50 50/50 100/0 0/100 0/100 0/100 50/50 50/50 core sheath Type of hot-melt composite weave Y fiber diameter in non-woven fabric (μπι) Ό fN (Ν CS »η Η rs <N <N 1 (S fS CO fS <N vs. r4 fN Η <s H <N Hydrophilic agent adhesion amount (% by weight) Ο For + inch Ο inch 〇 1 to d Inch d inch o ο o Type of hydrophilizing agent Ξ <<< 1 ffl 5 Ξ ω E Second component (sheath) Melting point (°C) 127.8 126.9 126.9 126.9 - 127.8 126.9 127.2 127.2 127.5 * Infant S g S ω 1 sssss First component (core) Melting point CC) 255.6 252.8 252.8 252.8 a 255.6 252.8 253.3 253.3 253.3 Raspberry 邂Η UJ Ou Η ω Ck. Η U CU H ω eu 1 UJ cu CU 0u HU UJ UJ cu Core sheath heat Elongated composite fiber X pity; € W God 1 | Κ * reserve fee 00 (Ν so cn (Ν so cn (Ν VJ ΓΟ (S 00 rn (N - 00 cn fS oo rn < N wins $ 00 Ο οο oo 00 00 00 Hydrophilizing agent attached to Dong (% by weight) 'Sf Ο Pair · inch Ο inch o to o' inch. For d hydrophilizing agent type << 5 δ <<< Two components (sheath) melting point CC) 126.5 126.5 127.6 126.5 126.5 126.5 alignment index (%) 00 ί^Ι 00 Bu Bu 00 00 00 ΓΛ ίΰ 0- Ui cu tii cu tti a. ίϋ M ϋ ϋ CL First component (core) Melting point CC) 165.4 165.4 257.0 257.2 165.4 165.4 165.4 Directional index (%) 〇0 ο 00 00 00 00 oo Vi 〇Η α. [Ξ 0m H ω cu cu Oh V» (Ν ν〇(Ν CN 00 CS oo o = is 145547.doc -51- 201030204 [Evaluation] For the τ and + woven fabrics obtained in the examples and the comparative examples, the contact angle of the fibers was measured by the method of the above φ. Further, the method of ^ F described in the paper measures the residual amount of liquid in the nonwoven fabric and the liquid flow distance ^ ^ ^ ^ ^ , and further evaluates the volume recovery property by hot air blowing. Its place, find it, and. It is not in Table 1 above and Tables 4 and 5 below. [Liquid Residual Amount] A sanitary napkin absorbent body was obtained by removing the surface sheet from a commercially available menstrual sanitary napkin (manufactured by Kao's product name "Ray ray ray dry and soft flank"). Further, the non-woven fabric to be measured was cut into MD5〇mmxCD5〇_ to produce a cut piece. Using the adhesive, the cut piece is placed such that the back surface 10a of the nonwoven fabric 10 in Fig. 3(b) is opposed to the absorbent body of the sanitary napkin, and the above-mentioned sanitary absorbent body is bonded and fixed. At the 4th position of the surface sheet (the skin abutting surface of the tampon absorber), a menstrual sanitary napkin using the non-woven fabric of the measurement object as the surface sheet was obtained. On the surface of the menstrual sanitary napkin which was not woven using the above-mentioned measurement object, a acryl plate having a cylindrical perforation hole was superposed, and a fixed load of 10 〇 Pa was applied to the sanitary napkin. Under the load, 120 seconds of the defibrinated horse blood flowed into the penetrating hole of the acrylic plate, and then flowed into the defibrinated horse mound for 120 seconds, and then flowed into 3.0 g of the defibrinated horse mound. After 60 seconds from the total of 6.0 g of defibrated horse blood, the acrylic plate was removed, and then the weight (W2) of the nonwoven fabric was measured. Then, the difference (W2-W1) between the weight (W1) of the non-woven fabric before flowing into the defibrinated horse blood measured in advance was calculated. The above operation was carried out three times, and the average of three times was taken as the liquid residual amount (mg). The liquid residual amount is an index of the degree of skin wetness of the wearer, and the liquid 145547.doc -52-201030204 has a higher residual value. [Liquid flow distance] The non-woven fabric to be measured was cut into MD 15G mmxCD 5Q _ in the same manner as the above [liquid residual amount], and a menstrual sanitary napkin using the nonwoven fabric as a surface sheet was obtained. The sanitary cotton absorption system is obtained from the commercially available menstrual cotton (made by Huawang, trade name "Reniya dry and soft with wings"). Except for this, the measurement was carried out in the same manner as the above-described measurement method of the liquid flow distance. [Volume Restorability] The nonwoven fabric 10 was wound into a paper tube having an outer diameter of Μ mm in a roll shape with a winding length of 27 μm, and stored at room temperature for 2 weeks. The non-woven fabric after storage was taken at a conveying speed of 15 〇m/min on the outer side of the diameter of 5 cucurbits and the inner side of the diameter of 600 mm. The processing temperature was 丨15 艽 and the treatment time was 0.20. The non-woven fabric was blown with hot air under the condition of a wind speed of 2·8 m/sec, thereby restoring the thickness of the nonwoven fabric. The thickness (the thickness before storage) of the non-woven fabric before the non-woven fabric is wound into a roll shape is c, and the thickness of the convex portion (the thickness after recovery) of the non-woven fabric after the hot air is blown is D, and the nonwoven fabric is not woven. The volume recovery property can be expressed by the following formula (2). The measurement of the thickness of the non-woven fabric after the hot air is blown is measured after i minutes to 丨 hours after the hot air is blown. The thickness of the nonwoven fabric is determined by the method described above. Volume recovery (%)=D/Cx 1 〇〇(2) The case where the volume recovery property calculated by the formula (2) is less than 6〇% is evaluated as X, and the case where 60% or more is less than 70%. The evaluation was Δ, and the case of 7〇% or more to less than 80% was evaluated as 〇, and the case of 8% or more was evaluated as ◎. The higher the value of volume recovery, the higher the evaluation. 145547.doc -53- 201030204 Example 00 (Ν神J CN 卜2700 755 as vq ◎ I fiber γ | iTi Ο σ\ v〇o rn weaving dimension X 00 v〇S m ν» »T) (Ν CN 卜〇2700 755 Ο) (Ν CN ◎ 1 fiber Υ 1 VO o ro 卜 fiber X 00 v〇s Ό CN 地! 卜寸cn 2700 〇00 v〇〇|Weaving dimension γ I as v〇卜ΓΛ 卜b fiber X ΓΛ <NO «Τ) (Ν地! 〇\r·t (N 〇2700 § Ο) ι as 〇|Fiber Y 1 s CN v〇CO Ό Fiber X CN 〇v〇 Fiber Type 1 Top PI Mid-abdominal P2 Near the concave part P3 Back side Q Basis weight [g/m2] Winding length [m] Winding diameter [mm] Thickness before storage [mm] Thickness after recovery [mm] Liquid residual amount [mg] Liquid flow [mm] The contact angle of the fibers in the volume-recoverable non-woven fabric [°] Non-woven fabrics, cold, and sturdy dynasty: Λ费鳟 • 54· 145547.doc 201030204 [9<] 145547.doc Comparative example (NT-^地! 卜2700 810 σ\ ^-Η »〇§ >100 〇1 fiber γ 1 Os 00 (S 〇(N ON 丨 fiber χ 1 pair 卜卜〇f—« CN 〇 〇 cn 2700 810 »—Η m 00 > 100 〇 I fiber γ gm oo | fiber χ rj 1—Η o Ο fiber Υ 00 VO cn 2700 800 (Ν Η 00 ΓΛ <N (N ◎ as fiber Υ Ό V〇〇| 2700 | 775 σ\ 卜 m 00 ◎ CO Υ S S S S 〇 v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v v Q ^r -1 ηβη Winding length [m] Winding diameter [mm] Thickness before storage [mm] Thickness after recovery [mm] Residual liquid [mg] Liquid flow [mm] Contact angle of fiber in volume-recoverable non-woven fabric [.] Non-woven fabric properties: 漤使令^31-3⁄4 Fortunately: X漤赛·55- 201030204 According to the results shown in Table 4, the non-woven fabric obtained in each of Examples 25 to 28 has a small amount of liquid residue. And the liquid flow distance is short, and the absorption performance is very high. Further, it is also known that the volume recovery property of the non-woven fabric after the hot air is blown is excellent. On the other hand, according to the results shown in Table 5, the non-woven fabric of Comparative Example 7 composed only of the heat-expandable double-coated fibers, and the nonwoven fabric of Comparative Examples 8 to 1 which consist only of the heat-fusible composite fibers, and the like were included. The non-woven fabric of the core 12 of the comparative example of the heat-expandable composite fiber and the heat-fusible composite fiber is one in which the liquid is liable to remain, the liquid is liable to flow, or the volume recovery property of the nonwoven fabric is poor. [Industrial Applicability] The nonwoven fabric of the present invention can be easily obtained by heat-treating a web or a nonwoven fabric containing fibers which are reduced in hydrophilicity by heat, and the hydrophilicity of a desired portion is lowered. The non-woven fabric of the present invention includes a portion which is locally lowered in hydrophilicity, and can be utilized effectively in various applications by utilizing this property. According to the method of the present invention, the non-woven fabric including the portion having reduced hydrophilicity can be efficiently manufactured. According to the hydrophilicity control method of the non-woven fabric of the present invention, it is possible to carry out the heat treatment without changing the dimension, or by forming the two layers 'or after the non-woven fabricization, and by merely changing the heat treatment portion, or The throughput of the hot air is reduced to reduce the hydrophilicity of the desired portion of the nonwoven fabric. The hydrating agent which can be used in the present invention φ, -Γ has a wide selection range. Less::::The sun and the moon are not woven'. By controlling the hydrophilicity of the non-woven fabric, the liquid residue is reduced. For example, when used as an absorbent article, the surface sheet 145547.dc>, •56·201030204, the material can be used to prevent the body fluid once absorbed from flowing back to the surface side of the wearer's skin, or the body fluid is on the non-woven surface. flow. In this way, the non-woven fabric of the yoke is suitable for use as a surface sheet of an absorbent article, for example, when the amount of liquid remaining is reduced as the surface sheet and the liquid flow amount is reduced. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a device used in a melt spinning method;

2 is a schematic view showing a step of obtaining a thermally repellent fiber from a core-sheath type composite fiber; FIG. 3(a) is a perspective view showing an embodiment of the nonwoven fabric of the present invention, and FIG. 3(b) is a view along FIG. (a) is an enlarged view of a cross-sectional portion of the non-woven fabric in the thickness direction; and the non-woven fabric 4 is a schematic view showing a step of producing a partial water-repellent cloth using the heat-repellent fibers. [Main component symbol description] 1, 2 Extrusion device ΙΑ, 2A Extruder IB, 2B Gear train 3 Spinning head 4 Traction device 5 Cold air 6 Housing 7 Roller 10, 10, Non-woven 145547.doc -57- 201030204 10a Flat surface (back surface) 10b Concave surface 11 Carding machine 12 Mesh 13 Embossing device 14 Embossing roller 15 Smoothing roller 16 Embossed web 17 Hot air treatment unit 18 Thinner part (embossed part) 19 thicker portion 61 cleaning device 62 hydrophilizing agent coating device 63 hot air blowing dryer 64 crimping device 65 cutting device 118 recess 118a first linear recess 118b second linear recess 119 convex PI top P2 mid-abdominal P3 recess near the Q flat surface (back) 10a convex corresponding part 145547.doc -58-

Claims (1)

201030204 VII. Patent Application Range: 1. A non-woven fabric comprising a core saddle type composite fiber having a sheath portion comprising a polyethylene resin and a core portion having a melting point higher than a resin component of the polyethylene resin, and attached to the core a hydrophilizing agent on the surface of the sheath-type composite fiber and comprising a heat-fusible portion formed by heat-melting at an intersection of the fibers; and the core-sheath type composite fiber comprises a heat-expandable composite fiber whose length is elongated by heating, The above thermally extensible conjugate fiber has a hydrophilicity gradient in the thickness direction and/or the planar direction of the nonwoven fabric. 2. The non-woven fabric of claim 1, which comprises a thinner portion formed by embossing, and a thicker portion other than the thickness, and the thinner portion or the vicinity thereof is hydrophilic The hydrophilicity at the top of the thicker portion is lower than the thinner portion or the vicinity thereof. 3. The non-woven fabric of the item 丨 or 2 wherein the above hydrophilizing agent comprises polyoxyethyl methacrylate and/or a hospital based beet test. 4. The non-woven fabric of claim 3 wherein the hydrophilizing agent comprises polyoxyethylene alkyl decylamine and an alkyl betaine. 5. In the non-woven fabric of claim 3, wherein the thicker portion is thicker than the above-mentioned thickness; the portion of the above-mentioned polyoxyethylene-based phthalamide and/or the beetroot beet The ratio of existence is higher. The non-woven fabric of the length 1 includes a non-thermal extensibility hot melt which comprises two components having different melting points and which are subjected to elongation treatment and whose length is substantially not elongated by heating 145547.doc 201030204. In the composite fiber, the heat-reducing venting fiber is adhered with a hydrophilizing agent, and the contact angle with water is 50 to 750. 7. The non-woven fabric of claim 6, wherein a mixing ratio (the former/the latter) of the heat-expandable composite fiber to the heat-soluble composite fiber is 20/80 to 80/20 by weight, and the above thermal elongation The intersection of the composite fibers, the intersection of the heat-fusible composite fibers, and the intersection of the heat-expandable composite fibers and the heat-suppressing composite fibers are respectively heated by a hot air method. 8. The non-woven fabric of claim 6 or 7, wherein the heat-expandable composite fiber has a contact angle of 40 to 90. . 9. The non-woven fabric of claim 6 or 7, which has a plurality of convex portions and concaves on the surface, and in the β convex portion, the contact angle of the heat extensible composite fiber with water from the top toward the non-woven fabric The other side is gradually reduced. Non-woven fabrics obtained by heat-treating a network or a non-woven fabric comprising hydrophilic fibers reduced by heat to reduce the hydrophilicity of a portion of the web or nonwoven fabric; the hydrophilicity is lowered by heat The fiber includes: a core-sheath type composite fiber having a portion containing a polyethylene resin and a core portion having a melting point higher than a resin component of the polyethylene resin; and a hydrophilizing agent attached to a surface of the core (4) composite fiber, and The polyacetonitrile resin has a crystallite size of 100 to 200 Å. 11. The non-woven fabric of claim 1, wherein the hydrophilizing agent is one or more selected from the group consisting of an anionic, cationic (tetra) surfactant of 145547.doc 201030204. 12. The non-woven fabric of claim (4) U, which comprises a thinner portion formed by boring processing, and a thicker portion other than the thick portion, wherein a portion having a thicker thickness is formed as a hydrophilic portion, and a thickness is formed. The thinner portion and/or its vicinity are formed as a hydrophilic portion. The non-woven fabric of the extravagant item 12 is hydrophilic on one side and hydrophobic on the other side. , 14·# Non-woven fabric manufacturing method, which is a non-woven fabric obtained by heat-treating a web or a non-woven fabric containing hydrophilic fibers which are lowered by heat to obtain a hydrophilicity of a part of the web or the non-woven fabric. The fiber whose hydrophilicity is lowered by heat includes: a portion containing a polyethylene resin and a sheath-type composite fiber including a resin component having a melting point higher than that of the polyethylene resin, and attached thereto A hydrophilizing agent on the surface of the core-sheath type composite fiber, and the above-mentioned polyethylene resin has a crystallite size of 100 to 200 A. The manufacturing method of the non-woven fabric of claim 14, wherein the temperature of the heat treatment is lower than a melting point of the polyethylene resin constituting the above-mentioned portion (the degree of Tc, to the above-mentioned core portion) The range of the melting point of the resin component. 16. The method for controlling the hydrophilicity of the nonwoven fabric by heat-treating the web or the non-woven fabric containing the hydrophilic fibers by the ',, and the reduced fibers, and making the web or non-woven fabric A part of the hydrophilicity is lowered; the hydrophilicity-reduced fiber by heat includes: a portion having a polyethylene-containing sapphire and a core comprising (iv) a resin component higher than the polyethylene resin 145547.doc 201030204 a core-sheath type composite fiber and a hydrophilizing agent attached to the surface of the core-sheath type composite fiber, and the polyethylene resin has a crystallite size of 100 to 200 A. 17. An absorbent article, which is a request for use Non-woven by any of items 1 to 13. 145547.doc