CN106232888B - Non-woven fabrics - Google Patents

Non-woven fabrics Download PDF

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Publication number
CN106232888B
CN106232888B CN201580021105.8A CN201580021105A CN106232888B CN 106232888 B CN106232888 B CN 106232888B CN 201580021105 A CN201580021105 A CN 201580021105A CN 106232888 B CN106232888 B CN 106232888B
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China
Prior art keywords
woven fabrics
fiber
fibre
composition
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CN201580021105.8A
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Chinese (zh)
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CN106232888A (en
Inventor
小森康浩
川口宏子
石黑健司
渡边绘里香
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Kao Corp
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Kao Corp
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Priority claimed from JP2014212400A external-priority patent/JP2016079529A/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4391Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
    • D04H1/43918Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres nonlinear fibres, e.g. crimped or coiled fibres
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511Topsheet, i.e. the permeable cover or layer facing the skin
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres

Abstract

The non-woven fabrics (1A) of the present invention possesses fused portion (12) formed by multiple intersection point heat fuseds made between composition fiber (11).Constitute fiber (11) and include high elongation fiber.It is conceived to 1 and constitutes fiber (11), this composition fiber (11) has between adjacent fused portion (12,12) by the big large-diameter portion (17) of the fibre diameter of the small minor diameter part of 2 fibre diameters (16,16) clamping.Also, so that the mode that the water-wetness of minor diameter part (16) is less than the water-wetness of large-diameter portion (17) is formed.

Description

Non-woven fabrics
Technical field
The present invention relates to a kind of non-woven fabrics.
Background technology
Applicant in this case's proposition is related to the technology of the non-woven fabrics manufactured in the following way:First in including elastomer Net one side configuration comprising low stretching non-elastic fiber net, to these net implement hot blast modes hot blasts handle and make fibre Intersection point heat fused between dimension, make the fibre sheet material stretching of these net integrations and by the non-elastic fiber of the low stretching Stretching, releases thereafter the stretching of the fibre sheet material, so as to manufacture non-woven fabrics (patent document 1).Described in patent document 1 In the manufacture method of non-woven fabrics, when fibre sheet material is stretched, using possessing the stretching of being capable of intermeshing a pair concavo-convex rollers Device.The technology stretched using such a stretching device for possessing a pair of concavo-convex rollers is in addition on the books in patent document 1, example It is also on the books in such as patent document 2,4 and 5.
Disclosed as another technology different from the technology, in patent document 3 and be related to impart fibre with permeable The technology of the water penetration non-woven fabrics of property imparting agent.
Prior art literature
Patent document
Patent document 1:Japanese Patent Laid-Open 2008-7924 publications
Patent document 2:Japanese Patent Laid-Open 2013-189745 publications
Patent document 3:Japanese Patent Laid-Open 2000-178876 publications
Patent document 4:Japanese Patent Laid-Open 2010-119861 publications
Patent document 5:Japanese Patent Laid-Open 2012-67426 publications
The content of the invention
By the non-woven fabrics manufactured by the autofrettage described in patent document 1 with comprising elastomer and along its length The mode of the not uniform non-elastic fiber of fineness degree formed.The fineness degree of non-elastic fiber as if so is simultaneously uneven, then Skin feel becomes good.However, not having any record on improving the few dry to touch of the liquid residue on surface.
In addition, in patent document 2, it is necessary to use elastic fibre, i.e. elastomer.Also, remember in patent document 2 Be loaded with makes the fibre diameter of fiber attenuate by stretching device, but the dry to touch few on improving the liquid residue on surface There is not any record.
In addition, the water penetration non-woven fabrics described in patent document 3 is due to being endowed water penetration imparting agent, so the liquid on surface Body residual is few, and dry to touch is improved.However, in patent document 3, on fiber stretching will be constituted and to form fibre diameter thin The part part thick with fibre diameter and by the way that the situation that the fiber of finish stretches and makes hydrophily change will be attached with There is not any imagination.
By the non-woven fabrics manufactured by the autofrettage described in patent document 1 with comprising elastomer and along its length The mode of the not uniform non-elastic fiber of fineness degree formed.The fineness degree of non-elastic fiber as if so is simultaneously uneven, then Skin feel becomes good.However, industry has the further good demand of skin feel to be made.
In addition, in patent document 2, it is necessary to use elastic fibre, i.e. elastomer.Also, remember in patent document 2 Be loaded with makes the fibre diameter of fiber attenuate by stretching device, but on forming the thin part of fibre diameter in a fiber With fibre diameter thick part, the thin part of fibre diameter and thick portion boundary should be configured at that what kind of position does not have It is any to record.
In addition, in patent document 4, on not having any record using high elongation fiber.In addition, in patent document 4 In, the fibre diameter on making fiber by stretching device, which attenuates, also any record, on being formed in a fiber The thin part of the fibre diameter part thick with fibre diameter, does not there is any imagination.
In addition, in patent document 5, on not having any record using high elongation fiber.In addition, in patent document 5 Though in record core sheath stripping carried out by stretching device so that fibre diameter attenuates, on should be thin by fibre diameter Part is configured at that what kind of position does not have any record with thick portion boundary.
Therefore, problem of the invention, which is to provide, a kind of eliminates the non-woven fabrics that the prior art is had the disadvantage that.
Of the invention (the 1st invention), which is related to, a kind of possesses fusion formed by multiple intersection point heat fuseds made between composition fiber The non-woven fabrics in portion.The composition fiber includes high elongation fiber, is conceived to 1 composition fiber, this composition fiber is in phase Have between the adjacent fused portion by the big large-diameter portion of the fibre diameter of the small minor diameter part clamping of 2 fibre diameters.It is described small The hydrophily in footpath portion is less than the hydrophily of the large-diameter portion.
Of the invention (the 2nd invention), which is related to, a kind of possesses fusion formed by multiple intersection point heat fuseds made between composition fiber The non-woven fabrics in portion.The composition fiber includes high elongation fiber.It is conceived to 1 composition fiber, this composition fiber is in phase Have between the adjacent fused portion by the big large-diameter portion of the fibre diameter of the small minor diameter part clamping of 2 fibre diameters.From adjoining It is configured in the change point of the minor diameter part to the large-diameter portion of the fused portion from the fused portion to the adjacent fusion In the range of 1/3 of interval between portion.
Brief description of the drawings
Fig. 1 is the stereogram of an embodiment of the non-woven fabrics for representing (the 1st invention) of the invention.
Fig. 2 is the schematic diagram of the section for the thickness direction for representing the non-woven fabrics shown in Fig. 1.
Fig. 3 is that the state that the portion of being co-melted between the composition fiber of the non-woven fabrics shown in pie graph 1 is fixed is illustrated Figure.
Fig. 4 can be suitably employed in the schematic diagram of the manufacture device of the non-woven fabrics shown in manufacture Fig. 1 for expression.
The schematic diagram for the extension section that Fig. 5 possesses for the manufacture device shown in expression Fig. 4.
Fig. 6 is the line VI -- VI sectional view shown in Fig. 5.
Fig. 7 (a)~Fig. 7 (c) is to constitute to form multiple minor diameter parts in fiber and big for 1 between adjacent fused portion The explanation figure that the pattern in footpath portion is illustrated.
Fig. 8 is the stereogram of an embodiment of the non-woven fabrics for representing (the 2nd invention) of the invention.
Fig. 9 is the schematic diagram of the section for the thickness direction for representing the non-woven fabrics shown in Fig. 8.
Figure 10 is that the state that the portion of being co-melted between the composition fiber of the non-woven fabrics shown in pie graph 8 is fixed is illustrated Figure.
Figure 11 can be suitably employed in the schematic diagram of the manufacture device of the non-woven fabrics shown in manufacture Fig. 8 for expression.
The schematic diagram for the extension section that Figure 12 possesses for the manufacture device shown in expression Figure 11.
Figure 13 is the line VI -- VI sectional view shown in Figure 12.
Figure 14 (a)~Figure 14 (c) be constituted for 1 between adjacent fused portion formed in fiber multiple minor diameter parts with The explanation figure that the pattern of large-diameter portion is illustrated.
Embodiment
Hereinafter, simultaneously referring to the drawings, one preferred embodiment illustrated based on it in face of (the 1st invention) of the invention.
Represent that the non-woven fabrics 1A of an embodiment of (the 1st invention) of the invention (is also known as " non-woven fabrics below in Fig. 1 1A ") stereogram.Fig. 2 is the schematic diagram of the section for the thickness direction for representing the non-woven fabrics 1A shown in Fig. 1.Fig. 3 is shown in Fig. 1 Non-woven fabrics 1A composition fiber 11 enlarged diagram.As shown in figure 3, non-woven fabrics 1A for possess it is multiple make composition fiber 11 it Between intersection point heat fused formed by fused portion 12 non-woven fabrics.Herein, the intersection point constituted between fiber 11 is also composition fiber Abutment between 11.The abutment is formed by constituting heat fused between fiber 11.That is, the abutment is fused portion 12.And And, in present embodiment, non-woven fabrics 1A is as shown in figure 1, in the convex strip portions 13 of the striated of direction (X-direction) extension And the non-woven fabrics of concaveconvex structure that recessed bar portion 14 is alternately arranged.Specifically, as shown in Fig. 2 non-woven fabrics 1A has the table back of the body Two sides a, b section shape form multiple convex strip portions 13 of convex and positioned at adjacent towards the top of thickness direction (Z-direction) Recessed bar portion 14 between convex strip portions 13,13.The table back of the body two sides a, the b in recessed bar portion 14 section shape are towards the thickness direction of non-woven fabrics The top of (Z-direction) forms concavity.In other words, the table back of the body two sides a, the b in recessed bar portion 14 section shape are towards the thickness of non-woven fabrics The convex formed below in direction (Z-direction).Also, multiple convex strip portions 13 are respectively on a non-woven fabrics 1A direction (X-direction) Continuously extend, multiple recessed bar portions 14 are also formed in the trench that a non-woven fabrics 1A direction X continuously extends.Convex strip portions 13 and Recessed bar portion 14 is parallel to each other, and is alternately configured at the direction (Y-direction) orthogonal with one direction (X-direction).
It should be noted that when section observes non-woven fabrics 1A as shown in Figure 2, non-woven fabrics 1A has top region 13a, bottom zone The 13b and lateral zones 13c between these 13a, 13b.Also, the top of convex strip portions 13 is formed by top region 13a, recessed bar portion 14 bottom is formed by bottom zone 13b.Top region 13a, bottom zone 13b and lateral zones 13c are in a non-woven fabrics 1A direction (X Direction) continuously extend.On top region 13a, bottom zone 13b and lateral zones 13c, section observation non-woven fabrics 1A as shown in Figure 2 When, by the decile of thickness 3 of non-woven fabrics 1A Z-direction, the top position of thickness direction (Z-direction) is set to top region 13a, by thickness The central part of degree direction (Z-direction) is set to lateral zones 13c, and the lower portion of thickness direction (Z-direction) is set into bottom zone 13b, so as to be distinguished by.The differentiation is measured using following methods.
[top region 13a, bottom zone 13b, lateral zones 13c differentiating method]
Using Feather razors (manufacture of goods number FAS-10, Feather Safety Razor limited companies), Non-woven fabrics 1A is cut off along Y-direction, the sweep electron microscope (JCM-5100 of limited company of JEOL manufacture is utilized (trade name)) the non-woven fabrics 1A cut off is amplified to size of the position to be determined well into the visual field so as to be measured (10~100 times), by the decile of thickness 3 of non-woven fabrics 1A Z-direction, top is set to by the top position of thickness direction (Z-direction) Area 13a, lateral zones 13c is set to by the central part of thickness direction (Z-direction), and the lower portion of thickness direction (Z-direction) is set For bottom zone 13b, so as to be distinguished by.
When the situation analyzed from commercially available diaper etc., cold spray is blown to diaper as object etc. and carried out cold But, reduce bonding force.Then, each material is carefully peeled off with caution, obtains the non-woven fabrics as object, and carry out as described Cut-out and measure.
Non-woven fabrics 1A is concavo-convex using intermeshing a pair concavo-convex rollers 401,402 pairs of fibre sheet material 1a implementations as following Process and producer.A direction (X-direction) of the non-woven fabrics 1A refers to be manufactured with implementing concavo-convex processing to fibre sheet material 1a Operating direction (MD (Machine Direction), direct of travel) identical direction during non-woven fabrics 1A, with the non-woven fabrics 1A The orthogonal direction (Y-direction) of a direction (X-direction) refer to and the orthogonal orthogonal side of the operating direction (MD, direct of travel) To (CD (Cross Direction), roll axial direction) identical direction.
Non-woven fabrics 1A composition fiber 11 includes high elongation fiber.Herein, the height that so-called composition fiber 11 is included is stretched Length fiber, it is intended that in high elongation but also in manufactured non-woven fabrics 1A stage be also in the stage of raw fibre not only The fiber of high elongation.As " high elongation fiber ", the elastic fibre stretched except flexible (elastomer) with Outside, for example it can also enumerate:Enter as described in the paragraph [0033] of Japanese Patent Laid-Open 2010-168715 publications in low speed Row melt spinning and obtain after composite fibre, heated without stretch processing and/or processing of crispaturaing, be derived from Made by heating resin crystalline state change so as to length extend thermally extensible fiber;Or using polypropylene or The resins such as polyethylene, and the fiber that will be set to relatively low condition with respect to spinning speed and manufacture;Or to the low poly- second of crystallinity Dry-mixed polyethylene and the fiber that carries out spinning and manufacture etc. in alkene-polypropylene copolymer or polypropylene.In these fibers, Gao Shen Length fiber is preferably the sheath-core type conjugate fiber with heat fused.Sheath-core type conjugate fiber can be concentric core-sheath-type, can be Eccentric core-sheath-type, can be that parallel type also can be special-shaped type, particularly preferably concentric core-sheath-type.No matter fiber is using which kind of form Situation, for the viewpoint of the good non-woven fabrics such as manufacture softness and skin feel etc., the fiber number of high elongation fiber is in raw material Stage be preferably more than 1.0dtex, more preferably more than 2.0dtex, and preferably below 10.0dtex, more preferably Below 8.0dtex, specifically, preferably more than 1.0dtex and below 10.0dtex, more preferably more than 2.0dtex and 8.0dtex it is following.In this specification, skin feel refers to for without the sensation carry out official in the state of liquid during contact skin The characteristic that can be evaluated and obtain.In addition, when following dry to touch refers to for comprising skin is contacted in the state of residual liquid Sensation carry out sense evaluation and the characteristic that obtains.Therefore, dry to touch and skin feel are different qualities.
Non-woven fabrics 1A composition fiber 11 can also be constituted in addition to high elongation fiber comprising other fibers, be preferably only It is made up of non-elastic fiber, in order that the thin footpath and low fiber of water-wetness is largely present near fusion points, is preferably all Fusion points are formed by high elongation fiber, therefore are more preferably only made up of high elongation fiber.As other fibers, It can such as enumerate:Non- thermally extensible core-sheath-type heat fused comprising 2 kinds of different compositions of fusing point and progress stretch processing Composite fibre or original fiber (natural fiber, artificial silk or the acetate fiber such as cotton or paper pulp for not having heat fused Deng) etc..When the situation that non-woven fabrics 1A is also constituted in addition to high elongation fiber comprising other fibers, in non-woven fabrics 1A The ratio of high elongation fiber is preferably more than 50 mass % more preferably more than 80 mass %, and particularly preferably 100 mass %.
It is the stage unstretched processing or implementation in raw material as the thermally extensible fiber of one of high elongation fiber Cross the composite fibre of weak stretch processing, such as with constituting the 1st resin component of core, with constituting sheath portion and including polyethylene tree 2nd resin component of fat, the 1st resin component has the fusing point higher than the 2nd resin component.1st resin component is to show the fibre The composition of the thermally extensible of dimension, the 2nd resin component is the composition for showing heat fused.On the 1st resin component and the 2nd resin The fusing point of composition, using differential scanning type calorimeter (DSC6200 that Seiko Instruments limited companies manufacture), Heat analysis is carried out with 10 DEG C/min of programming rate to the fiber samples (sample weight 2mg) of thinner ground severing, each resin is determined Peak temperature is melted, and peak temperature is melted with it and is defined.Can not be clear and definite by this method in the fusing point of the 2nd resin component During the situation that ground is determined, the resin is defined as " resin for not having fusing point ".When the situation, the 2nd resin component is used as Molecule starts the temperature of flowing, will be fused to the 2nd resin component can to measure the temperature of the degree of the fusion points intensity of fiber to set For softening point, fusing point is replaced using the softening point.
As the 2nd resin component for constituting sheath portion, as described comprising polyvinyl resin., can as the polyvinyl resin Enumerate:Low density polyethylene (LDPE) (LDPE), high density polyethylene (HDPE) (HDPE), straight-chain low density polyethylene (LDPE) (LLDPE) etc..It is especially excellent Density is elected as 0.935g/cm3Above and 0.965g/cm3Following high density polyethylene (HDPE).The 2nd resin component for constituting sheath portion is excellent Elect as and be individually for polyvinyl resin, but can also blend other resins.As other resins blended, it can enumerate:Polypropylene tree Fat, vinyl-vinyl acetate copolymer (EVA), ethylene-vinyl alcohol copolymer (EVOH) etc..But, constitute the 2nd tree of sheath portion Fat composition is preferably more than 50 mass %, especially more than 70 mass % and below the 100 mass % in the resin component of sheath portion For polyvinyl resin.In addition, it is more than 10nm and below 20nm that the polyvinyl resin, which is preferably crystallite dimension, it is more preferably More than 11.5nm and below 18nm.
As the 1st resin component for constituting core, fusing point can be used to be higher than the composition tree as sheath portion with no particular limitation The resin component of the polyvinyl resin of fat.As the resin component for constituting core, for example, it can enumerate:The polyolefin such as polypropylene (PP) It is the polyester such as resin (except polyvinyl resin), PET (PET), polybutylene terephthalate (PBT) It is resin etc..And then also polyamide-based polymer or resin component can be used to be copolymer of more than two kinds etc..Also can be by a variety of trees Fat is blended and used, and when the situation, the fusing point of core is set to the fusing point of fusing point highest resin.It is easy for manufacturing non-woven fabrics For aspect, the difference of the fusing point of the fusing point for preferably constituting the 1st resin component of core and the 2nd resin component for constituting sheath portion (the former-the latter) it is more than 20 DEG C, additionally, it is preferred that for less than 150 DEG C.
It is used as the preferred orientation index of the 1st resin component in the thermally extensible fiber of one of high elongation fiber, root It is naturally different according to used resin, such as when the 1st resin component is the situation of acrylic resin, orientation index Preferably less than 60%, more preferably less than 40%, more preferably less than 25%.In the feelings that the 1st resin component is polyester During shape, orientation index is preferably less than 25%, more preferably less than 20%, more preferably less than 10%.On the other hand, 2 resin components are preferably that its orientation index is more than 5%, more preferably more than 15%, more preferably more than 30%.Orientation Index turns into the index of the degree of orientation of the macromolecular chain for the resin for constituting fiber.
The orientation index of 1st resin component and the 2nd resin component can pass through Japanese Patent Laid-Open 2010-168715 publications Paragraph [0027]~[0029] described in method obtain.In addition, make each resin component in thermally extensible fiber reach as The method of upper described orientation index be described in the paragraphs [0033] of Japanese Patent Laid-Open 2010-168715 publications~ [0036]。
In addition, the elongation of high elongation fiber is more than 100%, preferably more than 200% in the stage of raw material, it is more excellent Elect more than 250%, and preferably less than 800%, more preferably less than 500%, more preferably less than 400%, tool as For body, preferably more than 100% and less than 800%, more preferably more than 200% and less than 500%, more preferably More than 250% and less than 400%.By using the high elongation fiber of the elongation with the scope, and the fiber is in stretching Successfully stretched in device, following that fused portion 12 is adjacent to from minor diameter part 16 to the change point 18 of large-diameter portion 17, skin is touched Sense becomes good.In addition, the elongation of high elongation fiber is more than 60%, preferably more than 70% in the stage of non-woven fabrics, More preferably more than 80%, and preferably less than 200%, more preferably less than 150%, more preferably less than 120%, tool For body, preferably more than 60% and less than 200%, more preferably more than 70% and less than 170%, more preferably 80% Above and less than 150%.Particularly preferably using the elongation of the non-woven fabrics made by the ratio 100% of high elongation fiber as institute State scope.
The elongation of high elongation fiber according to JIS L-1015, with 20 ± 2 DEG C of determination of the environment humiture, 65 ± 2%RH, Measure under conditions of clamping interval 20mm, the draw speed 20mm/min of cupping machine is used as benchmark.It should be noted that The non-woven fabrics collection fiber that is produced from controlling oneself and can not will clamp interval and be set to 20mm situation, i.e. desire determining elongation When the fibre length of measure is less than 20mm situation, clamping interval is set as that 10mm or 5mm are measured.
The 1st resin component and the 2nd resin component in high elongation fiber ratio (mass ratio, the former:The latter) in original The stage of material is preferably 10: 90~90: 10, especially 20: 80~80: 20 and then is 50: 50~70: 30.High elongation fiber Fibre length can according to the manufacture method of non-woven fabrics use appropriate length.Nonwoven is manufactured using carding method as example following It is preferably that fibre length is set to 30~70mm or so during the situation of cloth.
The fibre diameter of high elongation fiber can suitably be selected in the stage of raw material according to the particular use of non-woven fabrics Select.In use non-woven fabrics as the member of formation of the absorbent commodities such as the surficial sheets of absorbent commodity situation when, be preferably Particularly preferably using more than 15 μm, and it is preferably to use less than 35 μm, particularly preferably using 30 μm using more than 10 μm Hereinafter, specifically, it is preferable to use more than more than 10 μm and less than 35 μm, especially 15 μm and less than 30 μm.The fiber Diameter is measured using following methods.
[measure of the fibre diameter of fiber]
As the fibre diameter of fiber, using sweep electron microscope, (limited company of JEOL manufactures JCM-5100), the section of fiber is amplified 200 times~800 times and carries out observation so as to determine the diameter (μm) of fiber.Fiber is cutd open Face uses Feather razors (manufacture of goods number FAS-10, Feather Safety Razor limited companies), by fiber Cut off and obtain.Fibre diameter when being approximately circle determined at 5 to 1 fiber being extracted, and by value at determine respectively 5 Average value be set to the diameter of fiber.
Situation on using the thermally extensible fiber of one as high elongation fiber in the stage of raw material, except described Beyond thermally extensible fiber, No. 4131852 publications of Japanese Patent No., Japanese Patent Laid-Open 2005-350836 public affairs also can be used Report, Japanese Patent Laid-Open 2007-303035 publications, Japanese Patent Laid-Open 2007-204899 publications, Japanese Patent Laid-Open Fiber described in 2007-204901 publications and Japanese Patent Laid-Open 2007-204902 publications etc..
On the non-woven fabrics of (the 1st invention) of the invention, as shown in figure 3, being conceived to constitute in fiber 11 the 1 of non-woven fabrics 1A Root constitutes fiber 11, and this composition fiber 11 has by the small minor diameter part of 2 fibre diameters between adjacent fused portion 12,12 16th, the big large-diameter portion 17 of the fibre diameter of 16 clampings.Specifically, as shown in figure 3, being conceived to non-woven fabrics 1A composition fiber 11 In 1 composition fiber 11, it is the small minor diameter part 16 of fibre diameter with roughly the same fibre diameter from making to be constituted with another Fused portion 12 formed by the intersection point heat fused of fiber 11 is stretched out and formed.Also, it is conceived to this 1 composition fiber 11, it is Between the minor diameter part 16,16 each stretched out from adjacent fused portion 12,12, fibre diameter is more than the large-diameter portion of minor diameter part 16 17 are stretched out and are formed with roughly the same fibre diameter.If being described in detail, non-woven fabrics 1A has following composition fiber 11: It is conceived to 1 composition fiber 11, sequentially matches somebody with somebody towards another fused portion 12 from a fused portion 12 in adjacent fused portion 12,12 It is equipped with minor diameter part 16,1 large-diameter portion 17, the minor diameter part 16 of another side of fused portion 12 of a side of fused portion 12.In addition, on Non-woven fabrics 1A, as shown in figure 3, being conceived to the non-woven fabrics 1A 1 composition fiber 11 constituted in fiber 11, in adjacent fused portion 12nd, possesses the composition fiber 11 of multiple (being 2 in non-woven fabrics 1A) large-diameter portions 17 between 12.If being described in detail, Non-woven fabrics 1A has following composition fiber 11:It is conceived to 1 composition fiber 11, is melted from one in adjacent fused portion 12,12 Conjunction portion 12 is sequentially configured with the minor diameter part 16 of a side of fused portion 12, the 1st large-diameter portion 17, minor diameter part towards another fused portion 12 16th, the 2nd large-diameter portion 17, the minor diameter part 16 of another side of fused portion 12.By as described with improving the firm of non-woven fabrics 1A There is low rigid minor diameter part 16 in the mode that the fused portion 12 of property is adjacent, so that non-woven fabrics 1A flexibility is improved, skin feel Become good.In addition, possess large-diameter portion more than 17, in other words in composition fiber 11 in the presence of more low rigid minor diameter parts 16, Then non-woven fabrics 1A flexibility is further improved, and skin feel becomes more preferable.On non-woven fabrics 1A, the sight that skin feel is improved Point is with for the non-woven fabrics rigidly viewpoint of reduction, being conceived to 1 composition fiber 11, between adjacent fused portion 12,12 preferably To possess the large-diameter portion 17 of more than 1, more preferably possess more than 1, and be preferably to possess less than 5, further Preferably possess less than 3, specifically, preferably possess more than 1 and less than 5, more preferably possess more than 1 And less than 3.
Fibre diameter (the diameter L of minor diameter part 1616) relative to fibre diameter (the diameter L of large-diameter portion 1717) ratio (L16/ L17) it is preferably more than 0.5, more preferably more than 0.55, and preferably less than 0.8, more preferably less than 0.7, Specifically, preferably more than 0.5 and less than 0.8, more preferably more than 0.55 and less than 0.7.Specifically, with regard to skin For the viewpoint that the viewpoint that sense of touch is improved rigidly is reduced with non-woven fabrics, fibre diameter (the diameter L of minor diameter part 1616) it is preferably 5 μm More than, more preferably more than 6.5 μm, particularly preferably more than 7.5 μm, and preferably less than 28 μm, further preferably For less than 20 μm, particularly preferably less than 16 μm, specifically, preferably more than 5 μm and less than 28 μm, more preferably More than 6.5 μm and less than 20 μm, particularly preferably more than 7.5 μm and less than 16 μm.For the viewpoint that skin feel is improved, greatly Fibre diameter (the diameter L in footpath portion 1717) be preferably more than 10 μm, more preferably more than 13 μm, particularly preferably 15 μm with On, and preferably less than 35 μm, more preferably less than 25 μm, particularly preferably less than 20 μm, specifically, preferably 10 More than μm and less than 35 μm, more preferably more than 13 μm and less than 25 μm, particularly preferably more than 15 μm and less than 20 μm.
Fibre diameter (the diameter L of minor diameter part 16 and large-diameter portion 1716、L17) with the measure with the fibre diameter of the fiber Identical mode is measured.
In addition, the non-woven fabrics of (the 1st invention) of the invention is less than the water-wetness of large-diameter portion 17 with the water-wetness of minor diameter part 16 Mode is formed.In order to assign the change of such a water-wetness to fiber, as long as according to following manufacture methods manufacture non-woven fabrics 1A.
On " water-wetness " described in (the 1st invention) of the invention, based on the fibre utilized measured by method described below The contact angle of dimension and judge its degree.Specifically, water-wetness is low identical with the big implication of contact angle, and water-wetness is high small with contact angle Implication is identical.
[assay method of contact angle]
Multiple non-woven fabrics 1A composition fiber 11 is randomly selected, is selected from the composition fiber 11 extracted and possesses minor diameter part 16 and the composition fiber 11 of large-diameter portion 17, position for the minor diameter part 16 in this composition fiber 11 and at the position of large-diameter portion 17 The contact angle of water be measured.As device is determined, the automatic contact of consonance interface science limited company manufacture is used Count MCA-J in angle.Distilled water is used during the measure of contact angle.Will be from ink jet type water droplet blowing unit (Cluster Technology public affairs Department's manufacture, blowing unit aperture is 25 μm of pulsed ejector CTC-25) liquid measure that sprays is set as 15 picoliters, and water droplet is dropped to The respective centre in the position of position and large-diameter portion 17 of minor diameter part 16.By the pattern dripped record a video in horizontally disposed camera The high speed video device of connection.For the viewpoint of followed by image analysis, recording apparatus, which is preferably, is assembled with high-speed capture The personal computer of equipment.In this measure, recorded a video every 17msec.In the image recorded, bundled software is utilized (version of software is 2.6.2 to FAMAS, and analytic method is set to sessile drop method, and analytic method is set to the method for θ/2, and image processing algorithm is set to Areflexia, image procossing image mode is set to framework, and threshold value is set to 200, without Curvature modification) water droplet is dripped in selected The initial image of composition fiber 11 carry out image analysis, calculate the face and filamentous angle of the ingress of air of water droplet, will It is set to contact angle.The selected severing of composition fiber 11 is fibre length 1mm or so, and the fiber is placed in into contact angle meter Sample bench, makes its maintenance level.Minor diameter part 16 and large-diameter portion 17 to 1 fiber determine the contact angle of different parts at 2.Will The minor diameter part 16 of N=5 roots and the contact angle of large-diameter portion 17 measure to decimal point 1, and the measured value at total 10 is carried out It is average, the average value (being rounded to after decimal point the 1st) of gained is defined as the contact angle of minor diameter part 16 and large-diameter portion 17.
With regard to the liquid residue on non-woven fabrics 1A surface it is few and for improving the viewpoint of dry to touch, the contact of minor diameter part 16 The difference (the former-the latter) of the contact angle of angle and large-diameter portion 17 be preferably it is more than more than 1 degree, especially 5 degree so that for 10 degree with On, and below preferably less than 25 degree, especially 20 degree and then for less than 15 degree.The difference of such as contact angle is preferably more than 1 degree And less than 25 degree, more preferably more than 5 degree and less than 20 degree, more preferably more than 10 degree and less than 15 degree.Specifically, The contact angle of minor diameter part 16 be preferably more than more than 60 degree, especially 70 degree and then for more than 80 degree, and preferably 100 degree with Under, especially less than 95 degree and then for less than 90 degree.The contact angle of such as minor diameter part 16 be preferably more than 60 degree and 100 degree with Under, more preferably more than 70 degree and less than 95 degree, more preferably more than 80 degree and less than 90 degree.In addition, large-diameter portion 17 Contact angle is preferably and preferably less than 90 degree, especially 85 more than more than 55 degree, especially 60 degree and then for more than 65 degree Below degree and then for less than 80 degree.The contact angle of such as large-diameter portion 17 is preferably more than 55 degree and less than 90 degree, more preferably 60 Degree more than and less than 85 degree, more preferably more than 65 degree and less than 80 degree.
In addition, the non-woven fabrics on (the 1st invention) of the invention, as shown in figure 3, being conceived to non-woven fabrics 1A composition fiber 11 In 1 composition fiber 11, be adjacent to certainly the minor diameter part 16 of fused portion 12 be configured to the change point 18 of large-diameter portion 17 it is molten from this In the range of 1/3 of interval T between 12, conjunction portion to adjacent fused portion 12,12.Herein, it is so-called (the 1st invention) of the invention Non-woven fabrics change point 18, it does not include from the minor diameter part 16 stretched out with small fibre diameter continuously to big with fibre diameter The position that gradually changes of large-diameter portion 17 stretched out in the fibre diameter of minor diameter part 16 or continuously through multiple stages to big The position that footpath portion 17 changes, it is intended that the position of extreme variation occurs for fibre diameter.In addition, it is core that fiber 11 is constituted in described 1 During the situation of sheath composite fibre, the change point 18 of the non-woven fabrics of the so-called present invention (the 1st invention), it does not include because in composition core Peeling-off and state that fibre diameter changes, meaning between 1st resin component in portion and the 2nd resin component for constituting sheath portion Refer to the position for making fibre diameter change by stretching.
In addition, so-called change point 18 is configured at 1/ to the interval T between adjacent fused portion 12,12 from fused portion 12 Refer to following implication in the range of 3:Non-woven fabrics 1A composition fiber 11 is randomly selected, the day as sweep electron microscope is used This electronics limited company manufacture JCM-5100 (trade name), with can to this composition fiber 11 as shown in Figure 3 as observe structure It is amplified into the mode (100 times~300 times) between the adjacent fused portion 12,12 of fiber 11.Then, by adjacent fused portion 12nd, the interval T between 12 center carries out 3 deciles, divides into region AT, another side of fused portion 12 of a side of fused portion 12 Region BT, middle section CT.Then, change point 18 is configured at the region AT or described region BT.In addition, so-called change Point 18 is configured at from the fused portion 12 to the non-woven fabrics in the range of 1/3 of the interval T between adjacent fused portion 12,12 1A, refers to when 20 non-woven fabrics 1A composition fiber 11 is randomly selected, is changed in region AT or described region BT configurations The fiber 11 that constitutes of point 18 constitutes the non-woven fabrics in fiber 11 with least more than 1 in 20.Specifically, sense of touch is improved Viewpoint for, preferably more than 1, particularly preferably more preferably more than 5, more than 10.
As following, the non-woven fabrics 1A of present embodiment is by stretching, the not only top of lateral zones 13c but also convex strip portions 13 That is the bottom in top region 13a and recessed bar portion 14 is that bottom zone 13b is stretched, compared to the raw material non-woven fabrics before stretching, nothing Spin the overall fibre density reduction of cloth.Thus, logical fluidity overall non-woven fabrics 1A is improved with aeration.In top region 13a, bottom In area of portion 13b and lateral zones 13c, be particularly susceptible be stretched, the fibre density person of being easily reduced be lateral zones 13c, in lateral zones 13c, logical fluidity is improved particularly with aeration.
The top that the non-woven fabrics 1A of present embodiment is less than convex strip portions 13 with lateral zones 13c fibre density is top region 13a fibre density and the bottom in recessed bar portion 14 are that the mode of bottom zone 13b fibre density is formed.Herein, so-called fiber is close Degree refers to the fiber quality of non-woven fabrics 1A per unit volume.So-called fibre density is high, it is intended that non-woven fabrics 1A per unit volume institute The fibre weight of presence is more, and distance is small between fiber.So-called fibre density is low, it is intended that the fibre present in non-woven fabrics 1A per unit volume Dimension amount is few, and distance is big between fiber.It should be noted that its capillary force of the high position of fibre density is raised, fibre density is low Position its capillary force reduction.
During section observation non-woven fabrics 1A as shown in Figure 2, non-woven fabrics 1A is so that the top (top region 13a) of convex strip portions 13 and recessed The minimum mode of the fibre density of lateral zones 13c between the bottom (bottom zone 13b) in bar portion 14 is formed.Therefore, in lateral zones 13c, the fibre weight present in non-woven fabrics 1A per unit volume becomes minimum, and distance becomes maximum between fiber, and non-woven fabrics 1A is whole The aeration of body improves and leads to fluidity and is also improved.And then, by way of the fibre density to make lateral zones 13c is minimum Formed, convex strip portions 13 become easily to follow the motion of the skin of wearer, and good skin feel can be achieved.For counter-lateral quadrents area 13c assigns such a fibre density, as long as according to following manufacture method manufacture non-woven fabrics 1A.
Lateral zones 13c fibre density (D15) fibre density (D relative to top region 13a13) ratio or relative to Bottom zone 13b fibre density (D14) ratio (D15/D13, D15/D14) be preferably more than 0.15, more preferably 0.2 with On, and preferably less than 0.9, more preferably less than 0.8, specifically, preferably more than 0.15 and less than 0.9, enter One step is preferably more than 0.2 and less than 0.8.In addition, the occurrence of the fibre density on non-woven fabrics 1A, top region 13a fibre Tie up density (D13) it is preferably 80/mm2More than, more preferably 90/mm2More than, and preferably 200/mm2Hereinafter, More preferably 180/mm2Hereinafter, specifically, preferably 80/mm2Above and 200/mm2Hereinafter, it is further excellent Elect 90/mm as2Above and 180/mm2Below.In addition, bottom zone 13b fibre density (D14) it is preferably 80/mm2With On, more preferably 90/mm2More than, and preferably 200/mm2Hereinafter, more preferably 180/mm2Hereinafter, Specifically, preferably 80/mm2Above and 200/mm2Hereinafter, more preferably 90/mm2Above and 180/mm2 Below.In addition, lateral zones 13c fibre density (D15) it is preferably 30/mm2More than, more preferably 40/mm2More than, And preferably 80/mm2Hereinafter, more preferably 70/mm2Hereinafter, specifically, preferably 30/mm2Above and 80/mm2Hereinafter, more preferably 40/mm2Above and 70/mm2Below.Top region 13a fibre density is in raised line Position near the summit in portion 13 is measured.Position of the bottom zone 13b fibre density near the bottom point in recessed bar portion 14 is entered Row is determined.The assay method of fibre density is as described below.
[assay method of top region 13a, bottom zone 13b or lateral zones 13c fibre density]
Use Feather razors (manufacture of goods number FAS-10, Feather Safety Razor limited companies) Non-woven fabrics is cut off, on top region 13a fibre density, using sweep electron microscope, for by the section of non-woven fabrics Top position of the thickness along the grade timesharing of Z-direction 3 be to be amplified observation near the summit of convex strip portions 13 (to be adjusted to that 30 can be measured The multiplying power of the fibre profile of~60 fibers;150~500 times), by per certain area (0.5mm2) the section, meter The section number of several cut off fibers.Then, it is converted into every 1mm2Fiber section number, be set to top region 13a fibre Tie up density.Determine and carried out with position at 3, carry out the fibre density that mean deviation is set to the sample.Similarly, on bottom zone 13b fibre density, is recessed bar portion 14 for the lower portion by the thickness of the section of non-woven fabrics along the grade timesharing of Z-direction 3 It is measured and obtains near bottom point.Similarly, the fibre density on lateral zones 13c, for by the section of non-woven fabrics Central part of the thickness along the grade timesharing of Z-direction 3 is measured and obtained.It should be noted that as sweep electron microscope, The JCM-5100 (trade name) manufactured using limited company of JEOL.
In addition, the non-woven fabrics 1A of present embodiment with constitute lateral zones 13c constituted in fiber have change point 18 fibre Radical is tieed up more than the mode shape for constituting the number of fiber in fiber with change point 18 for constituting top region 13a and bottom zone 13b Into.Thus, top region 13a becomes easily to follow the motion of the skin of wearer, and good skin feel can be achieved.Constitute sidepiece Area 13c's constitutes the number of fiber (N in fiber with change point 1815) have relative in the composition fiber for constituting top region 13a Change a little 18 number of fiber (N13) ratio or relative to constitute bottom zone 13b composition fiber in have change point 18 Number of fiber (N14) ratio (N15/N13, N15/N14) it is preferably more than 2, more preferably more than 5, and preferably 20 Hereinafter, more preferably less than 20, specifically, preferably more than 2 and less than 20, more preferably more than 5 and 20 with Under.In addition, the occurrence of the number of fiber with change point 18 on non-woven fabrics 1A, constitutes top region 13a composition fiber In have change point 18 number of fiber (N13) it is preferably more than 1, more preferably more than 5, and preferably 15 Hereinafter, more preferably less than 15, specifically, preferably more than 1 and less than 15 6, more preferably 5 with Go up and less than 15.In addition, composition bottom zone 13b's constitutes the number of fiber (N in fiber with change point 1814) it is preferably 1 It is more than root, more preferably more than 5, and preferably less than 15, more preferably less than 15, specifically, Preferably more than 1 and less than 15, more preferably more than 5 and less than 15.In addition, constituting lateral zones 13c structure There is the number of fiber (N of change point 18 into fiber15) it is preferably more than 5, more preferably more than 10, and preferably For less than 20, more preferably less than 20, specifically, preferably more than 5 and less than 20, more preferably More than 10 and less than 20.The assay method of number of fiber with change point 18 is as described below.
[constitute top region 13a, bottom zone 13b or lateral zones 13c constitutes the number of fiber in fiber with change point 18 Assay method]
There is the number of fiber of change point 18 in composition fiber 11 on constituting top region 13a, scanning electron is used Microscope, is to be amplified near the summit of convex strip portions 13 for the top position by the thickness of non-woven fabrics along the grade timesharing of Z-direction 3 Observation (is adjusted to that the multiplying power of the fibre profile of 30~60 fibers can be measured;50~500 times), randomly select 20 and constitute top Area 13a composition fiber 11, counts 20 and constitutes the fiber count in fiber 11 with change point 18.Have 1 between fused portion During the situation of the change point 18 more than individual, the fiber count with change point 18 is set to, when with multiple situations, 1 is also set to Root.Be set to composition top region 13a constitutes the number of fiber in fiber with change point 18.Determine and carried out with position at 3, Carry out the number of fiber that mean deviation is set to have change point 18 in the composition top region 13a of sample composition fiber.Together Sample, the number of fiber in fiber 11 with change point 18 is constituted on constitute bottom zone 13b, for by the thickness of non-woven fabrics It is to be measured and obtain near the bottom point in recessed bar portion 14 along the lower portion of the grade timesharing of Z-direction 3.Similarly, on constituting side Area of portion 13c's constitutes the number of fiber in fiber 11 with change point 18, for by the thickness of non-woven fabrics along the grade timesharing of Z-direction 3 Central part be measured and obtain.It should be noted that as sweep electron microscope, being had using JEOL's share The JCM-5100 (trade name) of limit company manufacture.
The non-woven fabrics 1A of present embodiment for example can be used in surficial sheets, the configuration for being configured at the relative surface side of skin Used in non-skin with respect to the back-sheet of surface side and the disposable diaper or physiology of the absorber between two sheet material The absorbent commodities such as cotton wool.The surface patch in the member of formation that the absorbent commodity especially can be formed by non-woven fabrics 1A Material is formed the liquid permeability sublevel being configured between the surficial sheets and the absorber by non-woven fabrics 1A.If by nothing Spin cloth 1A and form the surficial sheets, then due to the non-woven fabrics that non-woven fabrics 1A is concaveconvex structure, so the contact area with skin Rate is reduced, it is more difficult to rubbed.If in addition, the surficial sheets or the sublevel are formed by non-woven fabrics 1A, due to nonwoven Cloth 1A is the non-woven fabrics of concaveconvex structure, so resistance against compression is improved, buffering sense is improved, and can prevent bleeding back for body fluid.
On non-woven fabrics 1A thickness, integral thickness of non-woven fabrics 1A when side view is set to sheet thickness TS, passed through The non-woven fabrics 1A of bumps bending local thickness is set to thickness TL.Sheet thickness TSAs long as being carried out suitably adjusting according to purposes, When the situation of the surficial sheets as absorbent commodity or sublevel, preferably more than 0.5mm, more preferably more than 1mm, and Preferably below 7mm, more preferably below 5mm, specifically, preferably more than 0.5mm and below 7mm, more preferably 1mm with Upper and below 5mm.By being set to the scope, body fluid absorption speed when using is accelerated, and can suppress self-priming acceptor returns liquid, realizes More appropriate resiliency.
Thickness TLCan be different in each position in non-woven fabrics 1A, as long as being carried out suitably adjusting according to purposes.In During the situation of surficial sheets or sublevel as absorbent commodity, top region 13a thickness TL1Preferably more than 0.1mm, it is more excellent Elect more than 0.2mm, and preferably below 3.0mm, more preferably below 2.0mm, specifically, preferably more than 0.1mm as And below 3.0mm, more preferably more than 0.2mm and below 2.0mm.Bottom zone 13b thickness TL2Preferably more than 0.1mm, more Preferably more than 0.2mm, and preferably below 3.0mm, more preferably below 2.0mm, specifically, preferably 0.1mm with Upper and below 3.0mm, more preferably more than 0.2mm and below 2.0mm.Lateral zones 13c thickness TL3Preferably more than 0.1mm, More preferably more than 0.2mm, and preferably below 3.0mm, more preferably below 2.0mm, specifically, preferably 0.1mm Above and below 3.0mm, more preferably more than 0.2mm and below 2.0mm.By being set to the scope, body fluid absorption when using Speed is accelerated, and can suppress self-priming acceptor returns liquid, realizes more appropriate resiliency.
Sheet thickness TSAnd thickness TLIt is measured using following method.
Sheet thickness TSAssay method in non-woven fabrics 1A apply 0.05kPa load in the state of, surveyed using thickness Determine device to be measured.Thickness tester uses the laser displacement gauge that Omron companies manufacture.Thickness measurement is determined at 10, is calculated Go out their average value and be set to thickness.
Thickness TLThe digital microscope VHX-900 that is manufactured by KEYENCE limited companies of determination method, with about 20 times The section of sheet material is amplified in left and right, thus determines the thickness of each layer.
When overlooking non-woven fabrics 1A, as long as the spacing between top region 13a adjacent in Y-direction is suitably adjusted according to purposes Section, when the situation of the surficial sheets as absorbent commodity or sublevel, preferably more than 1mm, more preferably 1.5mm with On, and preferably below 15mm, more preferably below 10mm, specifically, preferably more than 1mm and below 15mm are more excellent Elect more than 1.5mm and below 10mm as.
In addition, non-woven fabrics 1A Unit Weight is also dependent on non-woven fabrics 1A particular use, in as absorbent commodity During the situation of surficial sheets or sublevel, in terms of the overall average value of sheet material, preferably 15g/m2More than, more preferably 20g/m2With On, and preferably 50g/m2Hereinafter, more preferably 40g/m2Hereinafter, specifically, preferably 15g/m2Above and 50g/m2With Under, more preferably 20g/m2Above and 40g/m2Below.
In addition, the surface attachment in non-woven fabrics 1A composition fiber 11 has fibre finish.Particularly preferably in raw material In the stage, there is fibre finish in the surface attachment for constituting the high elongation fiber in fiber 11.The fibre finish is preferably Comprising having malleable composition, more preferably comprising the malleable composition of tool and hydrophilic composition.Herein, so-called tool Malleable composition, if referring under the surface for being attached to fiber, low temperature easily in the stream under the extended surface and low temperature of fiber The excellent composition of dynamic property.As the malleable composition of such a tool, can enumerate that glass transition temperature is low and strand have it is soft Soft silicone resin, is used as silicone resin, it is preferable to use the polysiloxane using Si-O-Si chains as main chain.Recognize During in the fibre finish accompanying by fiber surface comprising the situation for having malleable composition and hydrophilic composition, have The composition of ductility easily extends when fiber is stretched, and hydrophilic composition is difficult to extend, thus, the stretching position of fiber Water-wetness changes.
It should be noted that containing the content benchmark of composition as the fibre finish as having malleable composition " fibre finish " is then " fibre finish for being attached to non-woven fabrics " as long as no special instructions, rather than be attached to non-woven fabrics it Preceding fibre finish.When fibre finish is attached to the situation of concavo-convex non-woven fabrics, usually using fibre finish is sharp Be diluted and winner with the appropriate solvent such as water, so fibre finish contain composition content, for example have malleable Content of the composition in fibre finish can be used as benchmark using the gross mass of the diluted fibre finish.
In addition, if judged as follows to have malleable composition.Specifically, do not bestowed for other The surface of the high elongation fiber of fibre finish assigns the fibre finish to be judged, based on [the measure of contact angle Method] determine impart the fibre finish high elongation fiber water-wetness.Then, the fibre finish will be imparted High elongation fiber stretches 2.0 times, forms minor diameter part 16 and large-diameter portion 17.Also, based on [assay method of contact angle], The water-wetness of large-diameter portion 17 to being formed is measured.Also, in the hydrophilic of the high elongation fiber before the stretching determined When the difference of the water-wetness of degree and the large-diameter portion 17 determined is more than 10 degree of situation, it is judged as containing into for the fibre finish It is divided into the malleable composition of tool.In other words, selected from non-woven fabrics 1A composition fiber and possess minor diameter part 16 and large-diameter portion 17 Composition fiber 11, based on [assay method of contact angle], position for the minor diameter part 16 in this composition fiber 11 and The contact angle of water at the position of large-diameter portion 17 is measured.Also, in the minor diameter part 16 determined contact angle with being determined The difference of contact angle of large-diameter portion 17 when being more than 10 degree of situation, be judged as in fibre finish malleable containing tool Composition.In addition, when the situation that the composition fiber for being directed to non-woven fabrics used in the products such as commercially available diaper is judged, will Non-woven fabrics own product as object is peeled off, using ethanol or ethanol/methanol mixed solvent extraction processing agent, carries out composition point Analysis.Then, the measure is carried out to the composition identified, whether judge each composition is the malleable reagent of tool.
As polysiloxane, straight-chain person can be used, with any in crosslinking two dimension or tridimensional network person Person.Preferably substantial straight-chain person.
It is alkylalkoxy silane or arylalkoxysilicane, alkane as the suitable concrete example in polysiloxane The polymer or annular siloxane of base halogenated siloxanes, as alkoxy, typically methoxyl group.As alkyl, being suitably can With carbon number more than 1 and less than 18, be preferably more than 1 and less than 8, especially more than 1 and less than 4 side chain alkyl. As aryl, phenyl or alkyl phenyl, alkoxyl phenyl etc. can be illustrated.Also can for the cyclic hydrocarbon group such as cyclohexyl or cyclopenta, such as The aralkyl of benzyl replaces alkyl or aryl.
As preferred most typical polysiloxane, dimethyl silicone polymer, polydiethylsiloxane can be enumerated, gathered Dipropyl radical siloxane etc., particularly preferably dimethyl silicone polymer.
The molecular weight of polysiloxane is preferably HMW, specifically, with Weight-average molecular gauge, preferably 100,000 More than, more preferably more than 150,000, more preferably more than 200,000, and preferably less than 1,000,000, more preferably 800,000 with Under, more preferably less than 600,000.In addition, as polysiloxane, also molecular weight of more than two kinds is different can be used to gather Organosiloxane.When the situation of the different polysiloxane of molecular weight of more than two kinds is used, wherein, a kind of divides equally again Son amount be preferably more than 100,000, more preferably more than 150,000, more preferably more than 200,000, additionally, it is preferred that for 1,000,000 with Under, more preferably less than 800,000, more preferably less than 600,000, alternative weight average molecular weight is preferably less than 100,000, more Preferably less than 50,000, more preferably less than 30,000 5 thousand, more preferably less than 20,000, additionally, it is preferred that be more than 2000, it is more excellent Elect more than 3000, more preferably more than 5000 as.In addition, weight average molecular weight for more than 100,000 polysiloxane with again Average molecular weight is less than optimizing mixing proporiton rate (the former of 100,000 polysiloxane:The latter) it is preferably 1 by quality ratio:10~ 4:1, more preferably 1:5~2:1.
Using GPC, (gel permeation chromatography, gel oozes the weight average molecular weight of polysiloxane Saturating chromatography) it is measured.Condition determination is as described below.In addition, the calculating of conversion molecular weight is carried out with polystyrene.
Splitter:GMHHR-H+GMHHR-H (cation)
Eluent:L Farmin DM20/CHCl3
Solvent flow rate:1.0ml/min
Separate column temperature:40℃
For the viewpoint that the water-wetness for making fiber significantly changes, content of the polysiloxane in fibre finish is excellent Elect as more than 1 mass %, more preferably more than 5 mass %, and preferably below 30 mass %, more preferably 20 Below quality %.Specifically, content of the polysiloxane in fibre finish is preferably more than 1 mass % and 30 matter Measure below %, more preferably more than 5 mass % and below 20 mass %.
As polysiloxane, commercially available product also can be used.For example, Shin-Estu Chemical Co., Ltd's manufacture " the SH200Fluid 1000000Cs ", in addition, conduct of " Cs of KF-96H-100 ten thousand ", Toray-Dow Corning companies manufacture Containing 2 kinds of polysiloxane persons, " KM-903 " or Toray-Dow of Shin-Estu Chemical Co., Ltd's manufacture can be used " BY22-060 " of Corning limited companies manufacture.
As hydrophilic composition, amphion surfactant or nonionic surfactant etc. can be used.
As the example of amphion surfactant, it can enumerate:Alkyl (carbon number 1~30) glycine betaine, alkyl (carbon number 1~30) amidoalkyl group (carbon number 1~4) dimethyl betaine, alkyl (carbon number 1~30) dihydroxy alkane Live on the ionic surface of the betaine type amphoterics such as base (carbon number 1~30) glycine betaine, sulfobetaine type amphoteric surfactant Property agent or alanine type [alkyl (carbon number 1~30) aminopropan acid type, alkyl (carbon number 1~30) dipropionic acid Type etc.] glycine type [alkyl (carbon number 1~30) the amion acetic acid type etc.] both sexes such as amphoteric surfactant, alkyl betaine The sulfamic acid type of the amino acid type amphoteric such as surfactant surfactant, alkyl (carbon number 1~30) taurine type etc. Amphoteric surfactant.Wherein, preferably betaine type amphoteric ionic surfactant, more preferably alkyl (carbon number 1 The alkyl betaine of~30) glycine betaine, particularly preferably carbon number 16~22 (such as stearyl).
As the example of nonionic surfactant, it can enumerate:Fatty acid glyceride, poly- (being preferably n=2~10) glycerine The polyol fatty acid esters such as fatty acid ester, sorbitan carboxylic esterses (carbon number 8~60 for being both preferably aliphatic acid), polyoxy Alkylidene (addition molal quantity 2~20) alkyl (carbon number 8~22) acid amides, polyoxy alkylidene (addition molal quantity 2~20) alkane Base (carbon number 8~22) ether, polyoxy alkylidene modified silicone, amino modified silicone etc..
The fibre finish is preferably also containing hydrophobic in addition to containing having malleable composition and hydrophilic composition Property composition.As hydrophobic combination, it can enumerate:Anion surfactant represented by alkylphosphonate, following formulas (1) (being also referred to simply as below " anion surfactant ") etc..
[changing 1]
(in formula, Z represent can comprising ester group, amide groups, amido, polyoxy alkylidene, ether or double bond carbon number 1~ The alkyl chain of 12 straight or branched, R1And R2Separately represent can comprising ester group, amide groups, polyoxy alkylidene, ether or The alkyl of the straight or branched of the carbon number 2~16 of double bond, X represents-SO3M、-OSO3M or-COOM, M represent H, Na, K, Mg, Ca or ammonium)
Alkylphosphonate is to improve the carding machine of raw cotton by the characteristic such as property or the uniformity of net, thus improve nonwoven The productivity ratio of cloth and prevent quality from reducing, and be matched with fibre finish.As the concrete example of alkylphosphonate, it can enumerate: Phosphoric acid stearyl ester, phosphoric acid myristin, lauryl phosphate, phosphoric acid palm ester etc. have saturated carbon chains person;Or phosphate, phosphoric acid Myristoyl ester etc. has unsaturated carbon chains and in these carbochains person that has side chain.More preferably carbochain for 16~18 list or Dialkyl phosphate it is complete in and/or part neutralize salt.It should be noted that as the salt of alkylphosphonate, can enumerate:Sodium Or alkali metal, ammonia, the various amines such as potassium etc..Alkylphosphonate, which can be used alone, or to be mixed two or more and uses by a kind.
For carding machine is by the viewpoint such as property or the uniformity of net, the compounding ratio of alkylphosphonate is preferably 5 matter More than %, more preferably more than 10 mass % are measured, in addition, with regard to without prejudice to by heat treatment generation based on polysiloxane institute shape Into fiber hydrophobization viewpoint for, preferably below 30 mass %, more preferably below 25 mass %.
Containing ratio (the former of polysiloxane and alkylphosphonate in fibre finish:The latter) with mass ratio Meter, preferably 1:5~10:1, more preferably 1:2~3:1.
Anion surfactant represented by the formula (1) refers to the composition not comprising the alkylphosphonate.In addition, Anion surfactant represented by the formula (1), which can be used alone, or to be mixed two or more and uses by a kind.
It is-SO as the X in formula (1)3M, i.e. hydrophilic group are sulfonic acid or the anion surfactant of its salt, example Dialkyl group sulfonic acid or their salt can such as be enumerated.As the concrete example of dialkyl group sulfonic acid, it can enumerate:Two (octadecyl) sulfo group ambers The dialkyl group such as amber acid, didecyl sulfosuccinic acid, two (tridecyl) sulfosuccinic acids, two (2- ethylhexyls) sulfosuccinic acids Sulfosuccinic acid, dialkyl sulfosuccinate glutaric acid etc. are esterified dicarboxylic acids, and by the compound of the α position sulfonation of diester; Or 2- sulfo groups tetradecanoic acid 1- ethyl esters (or acid amides) sodium salt or 2- sulfo groups hexadecanoic acid 1- ethyl esters (or acid amides) sodium salt etc. are by saturation The alpha-sulfo-fatty acid alkyl ester (or acid amides) of the α position sulfonation of fatty acid ester or unsaturated fatty acid ester (or acid amides);Or Dialkyl group alkene sulfonic acid obtained by the internal alkene progress sulfonation of the internal alkene or unrighted acid that make hydrocarbon chain etc.. The respective carbon number of alkyl of 2 chains of dialkyl group sulfonic acid be preferably it is more than more than 4 and less than 14, especially 6 and Less than 10.
It is sulfonic acid or the anion surfactant of its salt as hydrophilic group, more specifically, following the moon can be enumerated Ionic surface active agent.
[changing 2]
[changing 3]
It is-SO as the X in formula (1)3M, i.e. hydrophilic group are the anion surfactant of sulfuric acid or its salt, can Dialkyl sulfate is enumerated, as its concrete example, can be enumerated:Sulfuric acid 2- ethylhexyls sodium salt or sulfuric acid 2- hexyl last of the ten Heavenly stems ester sodium salts etc. Alcohol with side chain is carried out to the compound of sulphation;Or such as sulfuric acid polyoxyethylene 2- hexyl last of the ten Heavenly stems esters or sulfuric acid polyoxyethylene 2- hexyls last of the ten Heavenly stems ester is equal to the compound that POE chains are imported between the alcohol with side chain and sulfate;Or 12- sulfate group stearic acid 1- methyl esters (or acid amides) 3- sulfate group caproic acid 1- methyl esters (or acid amides) etc. forms hydroxy fatty acid (or acid amides) sulphation Compound etc..
It is sulfuric acid or the anion surfactant of its salt as hydrophilic group, more specifically, following the moon can be enumerated Ionic surface active agent.
[changing 4]
It is that-COOM, i.e. hydrophilic group is carboxylic acid or the anion surfactant of its salt as the X in formula (1), can Dialkyl carboxylic acid is enumerated, as its concrete example, can be enumerated:11- ethyoxyl heptadecane carboxylic acid sodium salts or 2- ethyoxyl pentacarboxylic acid sodium Salt etc. makes the hydroxylic moiety alkoxylate of hydroxy fatty acid and by the compound of fatty acid part sodium;Or make methyl amimoacetic acid Or the amino of amino acid such as glycine is reacted with the hydroxy aliphatic acyl chlorides through alkoxylate, so that the carboxylic acid in amino acid portion Carry out the compound of sodium;Or make compound that arginic amino and fat acyl chloride reacted and obtained etc..
It is carboxylic acid or the anion surfactant of its salt as hydrophilic group, more specifically, following the moon can be enumerated Ionic surface active agent.
[changing 5]
The compounding ratio of anion surfactant represented by formula (1) is preferably more than 1 mass % more preferably 5 More than quality %, in addition, if hydrophily become it is too high if easy liquid storage and damage drying property, for the viewpoint, preferably 20 Below quality %, more preferably below 13 mass %.In addition, the described of anion surfactant represented by formula (1) is matched somebody with somebody Composition and division in a proportion rate is preferably more than 1 mass % and below 20 mass %, more preferably more than 5 mass % and below 13 mass %.
The containing ratio of polysiloxane and the anion surfactant represented by formula (1) in fibre finish (the former:The latter) by quality ratio, preferably 1:3~4:1, more preferably 1:2~3:1.
And then, the fibre finish is removed using the malleable composition of tool, hydrophilic composition, alkylphosphonate and the moon Beyond ionic surface active agent, anionic surfactant or cationic surfactant etc. also can be used.
As the example of anionic surfactant, it can enumerate:Alkyl acid phosphate ester sodium salt, alkyl ether phosphates ester sodium salt, phosphorus Acid dialkyl ester sodium salt, dialkyl sulfosuccinate sodium salt, alkylbenzenesulfonate sodium salt, sulfonic alkyl ester sodium salt, sulfuric acid alkane Base ester sodium salt, sulfuric acid the second alkyl ester sodium salt etc. (alkyl be both preferably carbon number more than 6 and less than 22, especially more than 8 and Less than 22).These also otheralkali metal salt such as sylvite can be used to replace sodium salt.
As the example of cationic surfactant, it can enumerate:Alkyl (or alkenyl) trimethyl-ammonium halide, dialkyl group (or Alkenyl) dimethy lammonium chloride, alkyl (or alkenyl) pyridinium halide etc., these compounds are preferably to have carbon number more than 6 And less than 18 alkyl or alkenyl person.As the halogen in the halogen compound, chlorine, bromine etc. can be enumerated.
The fibre finish and then can also add the deadlocked preventing agents, fibre staining agent, lubricant etc. such as modified silicone Manage agent.
As the method for making fibre finish be attached to the surface for constituting fiber 11, various public affairs can be used with no particular limitation The method known.It can such as enumerate:Spraying coating, the coating carried out using slit type coater, the coating carried out using roller transfer, Impregnating in fibre finish.These processing can be carried out to the fiber before networking, also can be in by the various methods of fiber utilization Carried out after networking.But must be handled before following stretch processings.Surface attachment has the fiber of fibre finish for example By hot blast blast type drying machine, done at the substantially low temperature of the fusing point compared with polyvinyl resin (such as less than 120 DEG C) It is dry.
The non-woven fabrics of (the 1st invention) of the invention is manufactured by possessing the manufacture method of the non-woven fabrics of following steps:It is molten Step is closed, it is to make the intersection point warp constituted between fiber of the web comprising the high elongation fiber for imparting fibre finish By fused portion heat fused;And stretching step, it is in after the fuse step, by the web after fusion in a direction Upper stretching.On an embodiment of the manufacture method of the non-woven fabrics of (the 1st invention) of the invention, enumerate the non-woven fabrics 1A's Exemplified by preferable production process, and illustrated when reference picture 4.In Fig. 4, it is schematically indicated non-woven fabrics 1A manufacturer The preferred manufacture device 100 used in method.Manufacture device 100 can suitably be used in the producer of hot-wind nonwoven cloth.Manufacture Device 100 sequentially possesses net forming portion 200, hot blast processing unit 300 and extension section from the upstream side of manufacturing step towards downstream 400。
As shown in figure 4, net forming portion 200 possesses net forming apparatus 201.As net forming apparatus 201, cotton carding can be used Machine.As carding machine, carding machine phase usually used in the technical field with absorbent commodity can be used with no particular limitation Same person.According to non-woven fabrics 1A particular use, other net manufacture devices, such as gas spinning equipment also can be used to replace carding machine.
As shown in figure 4, hot blast processing unit 300 possesses cover 301.In in cover 301, hot blast is blowed using hot blast mode.Separately Outside, hot blast processing unit 300 possesses the conveyer belt 302 of the ring-shaped comprising aeration net.Conveyer belt 302 is surrounded in cover 301.It is defeated Band 302 is sent to be formed by the resins such as PET or metal.
The temperature and heat treatment time in the hot blast in cover 301 are blowed preferably such that the institute of composition fiber 11 of web 10 Comprising the mode of intersection point heat fused of high elongation fiber be adjusted.Specifically, the temperature of hot blast is preferably to be adjusted to ~30 DEG C of temperature high 0 DEG C relative to the fusing point for constituting the minimum resin of fusing point in fiber 11 of web 10.During heat treatment Between be preferably be adjusted to 1 second~5 seconds according to the temperature of hot blast.In addition, just promoting to constitute the further interlacing between fiber 11 For viewpoint, the wind speed of hot blast is preferably 0.3m/ seconds~1.5m/ seconds or so.In addition, conveyance speed be preferably 5m/min~ 100m/min or so.
As shown in Figure 4, Figure 5, possess being capable of intermeshing a pair of concavo-convex rollers 401,402 for extension section 400.A pair of concavo-convex rollers 401st, 402 formed in the way of it can heat, and respectively with big footpath convex portion 403,404 and path recess (not shown) in roll shaft side The mode being alternately arranged upwards is formed.Concavo-convex roller 401,402 can be heated also can be without being easy for making following fibre sheet materials For the viewpoint for the high elongation fiber stretching that 1a composition fiber 11 is included, when the situation of the concavo-convex roller 401,402 of heating Heating-up temperature be preferably the glass transition temperature highest resin being set in high elongation fiber glass transition temperature Below the fusing point of the minimum resin of fusing point above and in high elongation fiber.More preferably compared with the glass transition temperature of fiber More than high 10 DEG C of temperature and below temperature of low 10 DEG C compared with fusing point, the glass transition temperature more preferably compared with fiber is high More than 20 DEG C of temperature and below temperature of low 20 DEG C compared with fusing point.For example, using the glass of the fiber as core/sheath structure in fiber When 67 DEG C of glass transition temperature, PE (sheath) of 135 DEG C of PET (core)/- 20 DEG C of glass transition temperature, the fusing point of 258 DEG C of fusing point pair During its situation heated, be preferably heated to more than 67 DEG C and less than 135 DEG C, be more preferably heated to more than 77 DEG C and Less than 125 DEG C, more preferably it is heated to more than 87 DEG C and less than 115 DEG C.
In addition, as shown in fig. 6, in manufacture device 100, in big footpath convex portion adjacent on the roll axial direction of concavo-convex roller 401 Between 403,403 interval (spacing) and 404,404 between big footpath convex portion adjacent on the roll axial direction of concavo-convex roller 402 It is identical interval (spacing) w to be spaced (spacing), the high elongation fiber that fibre sheet material 1a composition fiber 11 is included in Successfully stretched in stretching device, it is described to be adjacent to fused portion from minor diameter part to the change point of large-diameter portion, become skin feel Obtain for viewpoint well, interval (spacing) w is preferably more than 1mm, particularly preferably more than 1.5mm, and preferably 10mm Hereinafter, particularly preferably below 8mm, specifically, preferably more than 1mm and below 10mm, particularly preferably more than 1.5mm and Below 8mm.For same viewpoint, as shown in fig. 6, the intrusion t of a pair of concavo-convex rollers 401,402 is (in phase on roll axial direction The interval on the summit of adjacent big footpath convex portion 403 and the summit of big footpath convex portion 404) it is preferably more than 1mm, particularly preferably 1.2mm More than, and preferably below 3mm, particularly preferably below 2.5mm, specifically, preferably more than 1mm and below 3mm are special You Xuanwei not more than 1.2mm and below 2.5mm.Also, for same viewpoint, mechanical stretching multiplying power be preferably 1.5 times with On, particularly preferably more than 1.7 times, and preferably less than 3.0 times, particularly preferably less than 2.8 times, specifically, preferably For more than 1.5 times and less than 3.0 times, particularly preferably more than 1.7 times and less than 2.8 times.
Manufacture method to the non-woven fabrics 1A using the manufacture device 100 constituted with more than is illustrated.
First, as shown in figure 4, in net forming portion 200, using with the high elongation fiber for having imparted fibre finish Chopped fiber shape composition fiber 11 as raw material, form (the net of web 10 by the use of the net forming apparatus 201 as carding machine Forming step).The shape being loosely complexed between its composition fiber 11 is in using the web 10 manufactured by net forming apparatus 201 State, not yet obtains the conformality as sheet material.
Then, as shown in figure 4, make comprising high elongation fiber web 10 constitute fiber 11 between intersection point via The heat fused of fused portion 12 and form fibre sheet material 1a (fuse step).Specifically, web 10 is transported to conveyer belt 302 On, in during hot blast processing unit 300 is by cover 301, hot blast is blowed in hot blast mode.Blowed if so in hot blast mode Hot blast, then between the composition fiber 11 of web 10 while further interlacing, make the intersection point of be complexed fiber carry out heat Fuse (reference picture 7 (a)), and manufacture the fibre sheet material 1a with sheet conformality.
Then, as shown in figure 4, the fibre plate 1a after fusion is stretched (stretching step) in one direction.Specifically, Using with being transported as the fibre plate 1a after the fusion of the conformality of sheet material between a pair of concavo-convex rollers 401,402, such as Fig. 7 (a) Shown in~Fig. 7 (c), fibre plate 1a is stretched, and 1 between adjacent fused portion 12,12 constitutes and formed in fiber 11 by 2 The big large-diameter portion 17 of fibre diameter that the small minor diameter part 16,16 of individual fibre diameter is clamped, and will be big to this from the minor diameter part 16 The change point 18 in footpath portion 17 is formed at 1/3 model to the interval T between the adjacent fused portion 12,12 from the fused portion 12 In enclosing.If being described in detail, the intersection point made between composition fiber 11 as shown in Fig. 7 (a) is heated via fused portion 12 The fibre sheet material 1a of conjunction is transported between a pair of concavo-convex rollers 401,402, makes fibre plate 1a edges and operating direction (MD, direct of travel) Orthogonal orthogonal direction (CD, roll axial direction) stretching.When fibre sheet material 1a is stretched along orthogonal direction (CD, roll axial direction), As shown in Fig. 7 (a), by the region between adjacent fused portion 12,12 fixed between composition fiber 11 in orthogonal direction Energetically stretched on (CD, roll axial direction).Especially as shown Fig. 7 (b), fixed each fused portion between it will constitute fiber 11 12 vicinity, easily occurs local contraction first, on 1 composition fiber 11 between adjacent fused portion 12,12, at two ends 2 minor diameter parts 16,16 are formed, the part clamped by 2 minor diameter parts 16,16 turns into large-diameter portion 17, so as to be formed by 2 paths The large-diameter portion 17 that portion 16,16 is clamped.In this way, in the vicinity of each fused portion 12, local contraction easily occurs first, so from path Portion 16 is formed on from the fused portion 12 to the interval between the adjacent fused portion 12,12 to the change point 18 of large-diameter portion 17 In the range of the 1/3 of T.
Also, on 1 composition fiber 11 between the adjacent fused portion 12,12 of a part, as shown in Fig. 7 (c) It is further stretched, makes on orthogonal direction (CD, roll axial direction) in the state of tensile leeway (elongate space) is remained Large-diameter portion 17 between the adjacent fused portion 12,12 is stretched, and minor diameter part 16 is formed in large-diameter portion 17.
When the region between the fused portion 12,12 adjacent in 1 composition fiber 11 is energetically stretched, in composition In the fibre finish that the adhering on surface of fiber 11, have malleable composition because the mobility under low temperature is excellent, so Flowed with the elongation of fiber, maintain to be attached to the state on the surface of minor diameter part 16.On the other hand, in composition fiber 11 Has the composition beyond malleable composition in the fibre finish that adhering on surface by between the adjacent fused portion 12,12 Region when energetically stretching, fail to flow with the elongation of fiber, it is impossible to maintain to be attached to the shape on the surface of minor diameter part 16 State.Therefore, in by by surface and the big footpath of minor diameter part 16 formed by the region stretching between the adjacent fused portion 12,12 The surface in portion 17, the composition ratio of accompanying fibre finish changes.Specifically, in the surface of minor diameter part 16, only Have malleable composition easily to adhere to, on the other hand, can adhere to comprising the malleable composition of tool in the surface of large-diameter portion 17 With the fibre finish of hydrophiling composition.Therefore, the water-wetness of minor diameter part 16 easily becomes less than the water-wetness of large-diameter portion 17.Especially If it is using the polysiloxane as having malleable composition, because polysiloxane sheet is as hydrophobicity, So the water-wetness of minor diameter part 16 is easily smaller than the water-wetness of large-diameter portion 17.
As described above, according to the manufacture method of the non-woven fabrics 1A using manufacture device 100, can continuously and expeditiously manufacture Possess non-woven fabrics 1A of the water-wetness less than the water-wetness of large-diameter portion 17 for constituting fiber 11 and minor diameter part 16 shown in Fig. 3.As schemed Shown in 4, manufactured non-woven fabrics 1A temporarily batched and with the keeping of the form of roller after, roll out and use from the roller.Or, Yu Wu The subsequent step production line for spinning cloth 1A manufacture device 100 implements processing, so as to be continuously manufactured by target product.
On the non-woven fabrics 1A manufactured in this way, as shown in figure 3, being conceived to 1 constituted in fiber 11 constitutes fibre Dimension 11, is configured at from the fused portion 12 to adjacent from the minor diameter part 16 for being adjacent to fused portion 12 to the change point 18 of large-diameter portion 17 Fused portion 12,12 between interval T 1/3 in the range of, therefore, become soft and skin feel become good.Especially Eye constitutes fiber 11 in 1, if being formed with multiple minor diameter parts 16 between adjacent fused portion 12,12, skin feel becomes More preferably.For the viewpoint for being easy for playing such a effect, constitute fiber 11 and preferably only include high elongation fiber.
When assuming that being mixed with the situation of elastomer in composition fiber 11, non-woven fabrics can be stretched when shrinking, therefore And when being easy to the manufacture method and mechanical stretching multiplying power identical situation with non-woven fabrics 1A, also it is difficult to the change for producing fibre diameter Change.Therefore, when being mixed with the situation of elastomer in composition fiber 11, it is difficult to the portion that extreme variation occurs for fibre diameter occur Position is change point 18, and easily forms the position continuously gradually changed from minor diameter part 16 to large-diameter portion 17.Due to being mixed with bullet Property fiber, so the position continuously gradually changed being thusly-formed may not locally around be stretched in fusion points, it is molten Chalaza is nearby it would be better to say that randomly observed.It should be noted that for making the more preferable viewpoint of skin feel, also preferably Elastomer is free of to constitute fiber 11.
In addition, non-woven fabrics 1A includes the structure formed in the way of the water-wetness that the water-wetness of minor diameter part 16 is less than large-diameter portion 17 Constituted into fiber 11.Therefore, there is the part (minor diameter part 16) that water-wetness is reduced in non-woven fabrics 1A Dispersion on surface, so nonwoven The liquid residue on its surface of cloth 1A is few, and dry to touch is improved, and distance is widened by minor diameter part 16 between fiber, and liquid passes through property Improve.
In addition, non-woven fabrics 1A is the non-woven fabrics of concaveconvex structure, and it is less than top region with lateral zones 13c fibre density The mode of 13a fibre density and bottom zone 13b fibre density is formed.Therefore, between lateral zones 13c fiber distance compared with top Distance is broad between area 13a and bottom zone 13b fiber, so aeration overall non-woven fabrics 1A, logical fluidity are improved.And then, By the way that to make to be formed by way of lateral zones 13c fibre density is minimum, convex strip portions 13 become easily to follow the skin of wearer Motion, can be achieved good skin feel.
In addition, non-woven fabrics 1A is the non-woven fabrics of concaveconvex structure, and it is constituted the institute of fiber 11 to constitute 1 of lateral zones 13c The number for the change point 18 having more than constitute 1 of the top region 13a number for constituting the change point 18 that fiber 11 has and The mode for the number that constitute bottom zone 13b 1 constitutes the change point 18 that fiber 11 has is formed.Therefore, in lateral zones 13c The part (minor diameter part 16) of a large amount of water-wetness reductions is dispersed with, so the liquid residue on surface is less, dry to touch is further Improve, distance is widened by minor diameter part 16 between fiber, liquid permeability is improved.
Then, below, simultaneously referring to the drawings, one preferred embodiment carried out based on it in face of (the 2nd invention) of the invention Explanation.
Represent that the non-woven fabrics 1B of an embodiment of (the 2nd invention) of the invention (is also known as " non-woven fabrics below in Fig. 8 1B ") stereogram.Fig. 9 is the schematic diagram of the section for the thickness direction for representing the non-woven fabrics 1B shown in Fig. 8.Figure 10 is shown in Fig. 8 Non-woven fabrics 1B composition fiber 11 enlarged diagram.As shown in figure 8, non-woven fabrics 1B for possess it is multiple make composition fiber 11 it Between intersection point heat fused formed by fused portion 12 (reference picture 10) non-woven fabrics.Also, in present embodiment, non-woven fabrics 1B As shown in figure 8, in the convex strip portions 13 of the striated of direction (X-direction) extension and recessed bar portion 14 be alternately arranged it is recessed The non-woven fabrics of male structure.Specifically, as shown in figure 9, there is non-woven fabrics 1B table to carry on the back two sides a, b section shape towards thickness side Multiple convex strip portions 13 of convex and the recessed bar portion 14 between adjacent convex strip portions 13,13 are formed to the top of (Z-direction). Top of the table back of the body two sides a, b section shape towards the thickness direction (Z-direction) of non-woven fabrics forms concavity in recessed bar portion 14.Change speech It, in recessed bar portion 14 table the back of the body two sides a, b section shape towards non-woven fabrics thickness direction (Z-direction) convex formed below. Also, multiple convex strip portions 13 continuously extend respectively on a non-woven fabrics 1B direction (X-direction), multiple recessed bar portions 14 also shape Into in the trench continuously extended on a non-woven fabrics 1B direction X.Convex strip portions 13 and recessed bar portion 14 are parallel to each other, and alternately match somebody with somebody It is placed in the direction (Y-direction) orthogonal with one direction (X-direction).
It should be noted that when section observes non-woven fabrics 1B as shown in Figure 9, non-woven fabrics 1B has top region 13a, bottom zone The 13b and lateral zones 13c between these 13a, 13b.Also, the top of convex strip portions 13 is formed by top region 13a, recessed bar portion 14 bottom is formed by bottom zone 13b.Top region 13a, bottom zone 13b and lateral zones 13c are in a non-woven fabrics 1B direction (X Direction) continuously extend.On top region 13a, bottom zone 13b and lateral zones 13c, section observation non-woven fabrics 1B as shown in Figure 9 When, by the decile of thickness 3 of non-woven fabrics 1B Z-direction, the top position of thickness direction (Z-direction) is set to top region 13a, by thickness The central part of degree direction (Z-direction) is set to lateral zones 13c, and the lower portion of thickness direction (Z-direction) is set into bottom zone 13b, so as to be distinguished by.The differentiation is measured using following methods.
[top region 13a, bottom zone 13b, lateral zones 13c differentiating method]
Using Feather razors (manufacture of goods number FAS-10, Feather Safety Razor limited companies), Non-woven fabrics 1B is cut off along Y-direction, the sweep electron microscope (JCM-5100 of limited company of JEOL manufacture is utilized (trade name)) the non-woven fabrics 1B cut off is amplified to size of the position to be determined well into the visual field so as to be measured (10~100 times), by the decile of thickness 3 of non-woven fabrics 1B Z-direction, top is set to by the top position of thickness direction (Z-direction) Area 13a, lateral zones 13c is set to by the central part of thickness direction (Z-direction), and the lower portion of thickness direction (Z-direction) is set For bottom zone 13b, so as to be distinguished by.
When the situation analyzed from commercially available diaper etc., cold spray is blown to diaper as object etc., makes hot melt Adhesive solidifies.Then, each material is carefully peeled off with caution, obtains the non-woven fabrics as object, and cut off as described And determine.
Non-woven fabrics 1B implements concavo-convex add as following using intermeshing a pair concavo-convex rollers 401,402 couples of fibre sheet material 1a Work and manufacture.A direction (X-direction) of the non-woven fabrics 1B is with manufacturing nonwoven to the concavo-convex processing of fibre sheet material 1a implementations Operating direction (MD, direct of travel) identical direction during cloth 1B a, direction (X-direction) with the non-woven fabrics 1B is orthogonal Direction (Y-direction) is and orthogonal direction (CD, roll axial direction) identical side orthogonal with the operating direction (MD, direct of travel) To.
Non-woven fabrics 1B composition fiber 11 includes high elongation fiber.Herein, the height that so-called composition fiber 11 is included is stretched Length fiber, it is intended that in high elongation but also in manufactured non-woven fabrics 1B stage be also in the stage of raw fibre not only The fiber of high elongation.As " high elongation fiber ", the elastic fibre stretched except flexible (elastomer) with Outside, for example it can also enumerate:Carried out as described in the paragraph [0033] of Japanese Patent Laid-Open 2010-168715 publications with low speed Melt spinning and obtain after composite fibre, heated without stretch processing and/or processing of crispaturaing, it is thus obtained The crystalline state of resin is set to change so as to the thermally extensible fiber of length extension by heating;Or use polypropylene or poly- The resins such as ethene, and the fiber that will be set to relatively low condition with respect to spinning speed and manufacture;Or to the low polyethylene of crystallinity- Dry-mixed polyethylene and the fiber that carries out spinning and manufacture etc. in polypropylene copolymer or polypropylene.In these fibers, high elongation Fiber is preferably the sheath-core type conjugate fiber with heat fused.Sheath-core type conjugate fiber can be concentric core-sheath-type, can be eccentric Core-sheath-type, can be that parallel type also can be special-shaped type, particularly preferably concentric core-sheath-type.No matter fiber uses the feelings of which kind of form Shape, for the viewpoint of the good non-woven fabrics such as manufacture softness and skin feel etc., the fiber number of high elongation fiber is in raw material Stage is preferably more than 1.0dtex, more preferably more than 2.0dtex, and preferably below 10.0dtex, more preferably Below 8.0dtex, specifically, preferably more than 1.0dtex and below 10.0dtex, more preferably more than 2.0dtex and 8.0dtex it is following.
Non-woven fabrics 1B composition fiber 11 can also be constituted in addition to high elongation fiber comprising other fibers, be preferably only It is made up of, is more preferably only made up of high elongation fiber non-elastic fiber.As other fibers, for example, it can enumerate:Bag Containing 2 kinds of different compositions of fusing point and carry out stretch processing non-thermally extensible core-sheath-type heat fused composite fibre or Original fiber (natural fiber, artificial silk or acetate fiber etc. such as cotton or paper pulp) without heat fused etc..In nonwoven During the situation that cloth 1B0 is also constituted in addition to high elongation fiber comprising other fibers, the high elongation in non-woven fabrics 1B0 is fine The ratio of dimension is preferably more than 50 mass % more preferably more than 80 mass %, and preferably below 100 mass %, More preferably below 100 mass %, specifically, preferably more than 50 mass % and below 100 mass % are further excellent Elect as more than 80 mass % and below 100 mass %.
As high elongation fiber the thermally extensible fiber of one in raw material stage it is unstretched processing or implemented The composite fibre of weak stretch processing, such as with constituting the 1st resin component of core, with constituting sheath portion and including polyvinyl resin The 2nd resin component, the 1st resin component have higher than the 2nd resin component fusing point.1st resin component is to show the fiber Thermally extensible composition, the 2nd resin component is the composition for showing heat fused.On the 1st resin component and the 2nd resin into The fusing point divided, it is right using differential scanning type calorimeter (DSC6200 that Seiko Instruments limited companies manufacture) The fiber samples (sample weight 2mg) of thinner ground severing carry out heat analysis with 10 DEG C/min of programming rate, determine the molten of each resin Peak temperature is solved, and peak temperature is melted with it and is defined.Can not be by this method clearly in the fusing point of the 2nd resin component During the situation of measure, the resin is defined as " resin for not having fusing point ".When the situation, point of the 2nd resin component is used as Son starts the temperature of flowing, will be fused to the 2nd resin component can to measure the temperature of the degree of the fusion points intensity of fiber to be set to Softening point, fusing point is replaced using the softening point.
As the 2nd resin component for constituting sheath portion, as described comprising polyvinyl resin., can as the polyvinyl resin Enumerate:Low density polyethylene (LDPE) (LDPE), high density polyethylene (HDPE) (HDPE), straight-chain low density polyethylene (LDPE) (LLDPE) etc..It is especially excellent Density is elected as 0.935g/cm3Above and 0.965g/cm3Following high density polyethylene (HDPE).The 2nd resin component for constituting sheath portion is excellent Elect as and be individually for polyvinyl resin, but can also blend other resins.As other resins blended, it can enumerate:Polypropylene tree Fat, vinyl-vinyl acetate copolymer (EVA), ethylene-vinyl alcohol copolymer (EVOH) etc..But, constitute the 2nd tree of sheath portion Fat composition is preferably more than 50 mass %, especially more than 70 mass % and below the 100 mass % in the resin component of sheath portion For polyvinyl resin.In addition, it is more than 10nm and below 20nm that the polyvinyl resin, which is preferably crystallite dimension, it is more preferably More than 11.5nm and below 18nm.
As the 1st resin component for constituting core, fusing point can be used to be higher than the composition tree as sheath portion with no particular limitation The resin component of the polyvinyl resin of fat.As the resin component for constituting core, for example, it can enumerate:The polyolefin such as polypropylene (PP) It is the polyester such as resin (except polyvinyl resin), PET (PET), polybutylene terephthalate (PBT) It is resin etc..And then also polyamide-based polymer or resin component can be used to be copolymer of more than two kinds etc..Also can be by a variety of trees Fat is blended and used, and when the situation, the fusing point of core is set to the fusing point of fusing point highest resin.It is easy for manufacturing non-woven fabrics For aspect, the difference of the fusing point of the fusing point for preferably constituting the 1st resin component of core and the 2nd resin component for constituting sheath portion (the former-the latter) it is more than 20 DEG C, additionally, it is preferred that for less than 150 DEG C.
It is used as the preferred orientation index of the 1st resin component in the thermally extensible fiber of one of high elongation fiber, root It is naturally different according to used resin, such as when the 1st resin component is the situation of acrylic resin, orientation index Preferably less than 60%, more preferably less than 40%, more preferably less than 25%.In the feelings that the 1st resin component is polyester During shape, orientation index is preferably less than 25%, more preferably less than 20%, more preferably less than 10%.On the other hand, 2 resin components are preferably that its orientation index is more than 5%, more preferably more than 15%, more preferably more than 30%.Orientation Index turns into the index of the degree of orientation of the macromolecular chain for the resin for constituting fiber.
The orientation index of 1st resin component and the 2nd resin component can pass through Japanese Patent Laid-Open 2010-168715 publications Paragraph [0027]~[0029] described in method obtain.In addition, make each resin component in thermally extensible fiber reach as The method of upper described orientation index be described in the paragraphs [0033] of Japanese Patent Laid-Open 2010-168715 publications~ [0036]。
In addition, the elongation of high elongation fiber is preferably more than 100% in the stage of raw material, more preferably 200% with On, more preferably more than 250%, and preferably less than 800%, more preferably less than 500%, more preferably Less than 400%, specifically, preferably more than 100% and less than 800%, more preferably more than 200% and less than 500%, enter One step is preferably more than 250% and less than 400%.By using the high elongation fiber of the elongation with the scope, and it is somebody's turn to do Fiber is successfully stretched in stretching device, following to be adjacent to fused portion from minor diameter part 16 to the change point 18 of large-diameter portion 17 12, skin feel becomes good.
The elongation of high elongation fiber according to JIS L-1015, with 20 ± 2 DEG C of determination of the environment humiture, 65 ± 2%RH, Measure under conditions of clamping interval 20mm, the draw speed 20mm/min of cupping machine is used as benchmark.It should be noted that The non-woven fabrics collection fiber that is produced from controlling oneself and can not will clamp interval and be set to 20mm situation, i.e. desire determining elongation When the fibre length of measure is less than 20mm situation, clamping interval is set as that 10mm or 5mm are measured.
The 1st resin component and the 2nd resin component in high elongation fiber ratio (mass ratio, the former:The latter) in original The stage of material is preferably 10:90~90:10th, especially 20:80~80:20 and then for 50:50~70:30.High elongation fiber Fibre length can according to the manufacture method of non-woven fabrics use appropriate length.Nonwoven is manufactured using carding method as example following It is preferably that fibre length is set to 30~70mm or so during the situation of cloth.
The fibre diameter of high elongation fiber can suitably be selected in the stage of raw material according to the particular use of non-woven fabrics Select.In use non-woven fabrics as the member of formation of the absorbent commodities such as the surficial sheets of absorbent commodity situation when, be preferably Particularly preferably using more than 15 μm, and it is preferably to use less than 35 μm, particularly preferably using 30 μm using more than 10 μm Hereinafter, specifically, it is preferable to use more than more than 10 μm and less than 35 μm, especially 15 μm and less than 30 μm.The fiber Diameter is measured using following methods.
[measure of the fibre diameter of fiber]
As the fibre diameter of fiber, using sweep electron microscope, (limited company of JEOL manufactures JCM-5100), the section of fiber is amplified 200 times~800 times and carries out observation so as to determine the diameter (μm) of fiber.Fiber is cutd open Face uses Feather razors (manufacture of goods number FAS-10, Feather Safety Razor limited companies), by fiber Cut off and obtain.Fibre diameter when being approximately circle determined at 5 to 1 fiber being extracted, and by value at determine respectively 5 Average value be set to the diameter of fiber.
Situation on using the thermally extensible fiber of one as high elongation fiber in the stage of raw material, except described Beyond thermally extensible fiber, No. 4131852 publications of Japanese Patent No., Japanese Patent Laid-Open 2005-350836 public affairs also can be used Report, Japanese Patent Laid-Open 2007-303035 publications, Japanese Patent Laid-Open 2007-204899 publications, Japanese Patent Laid-Open Fiber described in 2007-204901 publications and Japanese Patent Laid-Open 2007-204902 publications etc..
On the non-woven fabrics of (the 2nd invention) of the invention, as shown in Figure 10, it is conceived to constituting in fiber 11 for non-woven fabrics 1B 1 composition fiber 11, this composition fiber 11 has by the small minor diameter part of 2 fibre diameters between adjacent fused portion 12,12 16th, the big large-diameter portion 17 of the fibre diameter of 16 clampings.Specifically, as shown in Figure 10, it is conceived to non-woven fabrics 1B composition fiber 1 composition fiber 11 in 11, it is that the small minor diameter part 16 of fibre diameter is made and another structure certainly with roughly the same fibre diameter Stretch out and formed into fused portion 12 formed by the intersection point heat fused of fiber 11.Also, it is conceived to this 1 composition fiber 11, its For between the minor diameter part 16,16 each stretched out from adjacent fused portion 12,12, fibre diameter is more than the big footpath of minor diameter part 16 Portion 17 is stretched out and formed with roughly the same fibre diameter.If being described in detail, non-woven fabrics 1B has following composition fiber 11:Be conceived to 1 composition fiber 11, from a fused portion 12 in adjacent fused portion 12,12 towards another fused portion 12 according to Sequence is configured with the minor diameter part 16 of a side of fused portion 12,1 large-diameter portion 17, the minor diameter part 16 of another side of fused portion 12.In addition, On non-woven fabrics 1B, as shown in Figure 10, it is conceived to the non-woven fabrics 1B 1 composition fiber 11 constituted in fiber 11, in adjacent Possesses the composition fiber 11 of multiple (being 2 in non-woven fabrics 1B) large-diameter portions 17 between fused portion 12,12.If being chatted in detail State, then non-woven fabrics 1B has following composition fiber 11:It is conceived to 1 composition fiber 11, one from adjacent fused portion 12,12 Individual fused portion 12 is sequentially configured with the minor diameter part 16 of a side of fused portion 12 towards another fused portion 12, the 1st large-diameter portion 17, small Footpath portion 16, the 2nd large-diameter portion 17, the minor diameter part 16 of another side of fused portion 12.By as described with improving non-woven fabrics 1B The adjacent mode of rigid fused portion 12 there is low rigid minor diameter part 16, so as to improve non-woven fabrics 1B flexibility, skin Sense of touch becomes good.In addition, possessing multiple large-diameter portions 17, in other words in composition fiber 11 in the presence of more low rigid minor diameter parts 16, then non-woven fabrics 1B flexibility further improve, skin feel becomes more preferable.On non-woven fabrics 1B, skin feel is improved Viewpoint and non-woven fabrics rigidly for the viewpoint of reduction, be conceived to 1 composition fiber 11, between adjacent fused portion 12,12 Preferably possess the large-diameter portion 17 of more than 1, more preferably possess more than 1, and be preferably to possess less than 5, enter One step is preferably to possess less than 3, specifically, preferably possesses more than 1 and less than 5, more preferably possesses 1 Above and less than 3.
Fibre diameter (the diameter L of minor diameter part 1616) relative to fibre diameter (the diameter L of large-diameter portion 1717) ratio (L16/ L17) it is preferably more than 0.5, more preferably more than 0.55, and preferably less than 0.8, more preferably less than 0.7, Specifically, preferably more than 0.5 and less than 0.8, more preferably more than 0.55 and less than 0.7.Specifically, with regard to skin For the viewpoint that the viewpoint that sense of touch is improved rigidly is reduced with non-woven fabrics, fibre diameter (the diameter L of minor diameter part 1616) it is preferably 5 μm More than, more preferably more than 6.5 μm, particularly preferably more than 7.5 μm, and preferably less than 28 μm, further preferably For less than 20 μm, particularly preferably less than 16 μm, specifically, preferably more than 5 μm and less than 28 μm, more preferably More than 6.5 μm and less than 20 μm, particularly preferably more than 7.5 μm and less than 16 μm.For the viewpoint that skin feel is improved, greatly Fibre diameter (the diameter L in footpath portion 1717) be preferably more than 10 μm, more preferably more than 13 μm, particularly preferably 15 μm with On, and preferably less than 35 μm, more preferably less than 25 μm, particularly preferably less than 20 μm, specifically, preferably 10 More than μm and less than 35 μm, more preferably more than 13 μm and less than 25 μm, particularly preferably more than 15 μm and less than 20 μm.
Fibre diameter (the diameter L of minor diameter part 16 and large-diameter portion 1716、L17) with the measure with the fibre diameter of the fiber Identical mode is measured.
In addition, the non-woven fabrics on (the 2nd invention) of the invention, as shown in Figure 10, is conceived to non-woven fabrics 1B composition fiber 1 composition fiber 11 in 11, the minor diameter part 16 that fused portion 12 is adjacent to certainly is configured at from this to the change point 18 of large-diameter portion 17 In the range of 1/3 of interval T between fused portion 12 to adjacent fused portion 12,12.Herein, the so-called present invention (the 2nd hair It is bright) non-woven fabrics change point 18, it does not include from the minor diameter part 16 stretched out with small fibre diameter continuously to straight with fiber The position that gradually changes of large-diameter portion 17 that the fibre diameter that footpath is more than minor diameter part 16 is stretched out or continuously through multiple stages The position changed to large-diameter portion 17, it is intended that the position of extreme variation occurs for fibre diameter.In addition, constituting fiber 11 in described 1 For sheath-core type conjugate fiber situation when, the change point 18 of the non-woven fabrics of the so-called present invention (the 2nd invention), it is not comprising because in structure Into core the 1st resin component and constitute sheath portion the 2nd resin component between peeling-off and shape that fibre diameter changes State, it is intended that the position for making fibre diameter change by stretching.
In addition, so-called change point 18 is configured at 1/ to the interval T between adjacent fused portion 12,12 from fused portion 12 Refer to following implication in the range of 3:Non-woven fabrics 1B composition fiber 11 is randomly selected, the day as sweep electron microscope is used This electronics limited company manufacture JCM-5100 (trade name), with can to this composition fiber 11 as shown in Figure 10 as observe structure It is amplified into the mode (100 times~300 times) between the adjacent fused portion 12,12 of fiber 11.Then, by adjacent fused portion 12nd, the interval T between 12 center carries out 3 deciles, divides into region AT, another side of fused portion 12 of a side of fused portion 12 Region BT, middle section CT.Then, change point 18 is configured at the region AT or described region BT.In addition, so-called change Point 18 is configured at from the fused portion 12 to the non-woven fabrics in the range of 1/3 of the interval T between adjacent fused portion 12,12 1B, refers to when 20 non-woven fabrics 1B composition fiber 11 is randomly selected, is changed in region AT or described region BT configurations The fiber 11 that constitutes of point 18 constitutes the non-woven fabrics in fiber 11 with least more than 1 in 20.Specifically, sense of touch is improved Viewpoint for, preferably more than 1, particularly preferably more preferably more than 5, more than 10.
As following, the non-woven fabrics 1B of present embodiment is by stretching, the not only top of lateral zones 13c but also convex strip portions 13 That is the bottom in top region 13a and recessed bar portion 14 is that bottom zone 13b is stretched, compared to the raw material non-woven fabrics before stretching, nothing Spin the overall fibre density reduction of cloth.Thus, logical fluidity overall non-woven fabrics 1B is improved with aeration.In top region 13a, bottom In area 13b and lateral zones 13c, be particularly susceptible be stretched, the fibre density person of being easily reduced be lateral zones 13c, in lateral zones 13c, Logical fluidity is improved particularly with aeration.
The top that the non-woven fabrics 1B of present embodiment is less than convex strip portions 13 with lateral zones 13c fibre density is top region 13a fibre density and the bottom in recessed bar portion 14 are that the mode of bottom zone 13b fibre density is formed.Herein, so-called fiber is close Degree refers to the fiber quality of non-woven fabrics 1B per unit volume.So-called fibre density is high, it is intended that non-woven fabrics 1B per unit volume institute The fibre weight of presence is more, and distance is small between fiber.So-called fibre density is low, it is intended that the fibre present in non-woven fabrics 1B per unit volume Dimension amount is few, and distance is big between fiber.It should be noted that its capillary force of the high position of fibre density is raised, fibre density is low Position its capillary force reduction.
During section observation non-woven fabrics 1B as shown in Figure 9, non-woven fabrics 1B is so that the top (top region 13a) of convex strip portions 13 and recessed The minimum mode of the fibre density of lateral zones 13c between the bottom (bottom zone 13b) in bar portion 14 is formed.Therefore, in lateral zones 13c, the fibre weight present in non-woven fabrics 1B per unit volume becomes minimum, and distance becomes maximum between fiber, and non-woven fabrics 1B is whole The aeration of body improves and leads to fluidity and is also improved.And then, by way of the fibre density to make lateral zones 13c is minimum Formed, convex strip portions 13 become easily to follow the motion of the skin of wearer, and good skin feel can be achieved.For counter-lateral quadrents area 13c assigns such a fibre density, as long as according to following manufacture method manufacture non-woven fabrics 1B.
Lateral zones 13c fibre density (D15) fibre density (D relative to top region 13a13) ratio or relative to Bottom zone 13b fibre density (D14) ratio (D15/D13, D15/D14) be preferably more than 0.15, more preferably 0.2 with On, and preferably less than 0.9, more preferably less than 0.8, specifically, preferably more than 0.15 and less than 0.9, enter One step is preferably more than 0.2 and less than 0.8.In addition, the occurrence of the fibre density on non-woven fabrics 1B, top region 13a fibre Tie up density (D13) it is preferably 80/mm2More than, more preferably 90/mm2More than, and preferably 200/mm2Hereinafter, More preferably 180/mm2Hereinafter, specifically, preferably 80/mm2Above and 200/mm2Hereinafter, it is further excellent Elect 90/mm as2Above and 180/mm2Below.In addition, bottom zone 13b fibre density (D14) it is preferably 80/mm2With On, more preferably 90/mm2More than, and preferably 200/mm2Hereinafter, more preferably 180/mm2Hereinafter, Specifically, preferably 80/mm2Above and 200/mm2Hereinafter, more preferably 90/mm2Above and 180/mm2 Below.In addition, lateral zones 13c fibre density (D15) it is preferably 30/mm2More than, more preferably 40/mm2More than, And preferably 80/mm2Hereinafter, more preferably 70/mm2Hereinafter, specifically, preferably 30/mm2Above and 80/mm2Hereinafter, more preferably 40/mm2Above and 70/mm2Below.Top region 13a fibre density is in raised line Position near the summit in portion 13 is measured.Position of the bottom zone 13b fibre density near the bottom point in recessed bar portion 14 is entered Row is determined.The assay method of fibre density is as described below.
[assay method of top region 13a, bottom zone 13b or lateral zones 13c fibre density]
Use Feather razors (manufacture of goods number FAS-10, Feather Safety Razor limited companies) Non-woven fabrics is cut off, on top region 13a fibre density, using sweep electron microscope, for by the section of non-woven fabrics Top position of the thickness along the grade timesharing of Z-direction 3 be to be amplified observation near the summit of convex strip portions 13 (to be adjusted to that 30 can be measured The multiplying power of the fibre profile of~60 fibers;150~500 times), by per certain area (0.5mm2) the section, meter The section number of several cut off fibers.Then, it is converted into every 1mm2Fiber section number, be set to top region 13a fibre Tie up density.Determine and carried out with position at 3, carry out the fibre density that mean deviation is set to the sample.Similarly, on bottom zone 13b fibre density, is recessed bar portion 14 for the lower portion by the thickness of the section of non-woven fabrics along the grade timesharing of Z-direction 3 It is measured and obtains near bottom point.Similarly, the fibre density on lateral zones 13c, for by the section of non-woven fabrics Central part of the thickness along the grade timesharing of Z-direction 3 is measured and obtained.It should be noted that as sweep electron microscope, The JCM-5100 (trade name) manufactured using limited company of JEOL.
In addition, the non-woven fabrics 1B of present embodiment with constitute lateral zones 13c constituted in fiber have change point 18 fibre Radical is tieed up more than the mode shape for constituting the number of fiber in fiber with change point 18 for constituting top region 13a and bottom zone 13b Into.Thus, top region 13a becomes easily to follow the motion of the skin of wearer, and good skin feel can be achieved.Constitute sidepiece Area 13c's constitutes the number of fiber (N in fiber with change point 1815) have relative in the composition fiber for constituting top region 13a Change a little 18 number of fiber (N13) ratio or relative to constitute bottom zone 13b composition fiber in have change point 18 Number of fiber (N14) ratio (N15/N13, N15/N14) it is preferably more than 2, more preferably more than 5, and preferably 20 Hereinafter, more preferably less than 20, specifically, preferably more than 2 and less than 20, more preferably more than 5 and 20 with Under.In addition, the occurrence of the number of fiber with change point 18 on non-woven fabrics 1B, constitutes top region 13a composition fiber In have change point 18 number of fiber (N13) it is preferably more than 1, more preferably more than 5, and preferably 15 Hereinafter, more preferably less than 15, specifically, preferably more than 1 and less than 15, more preferably 5 with Go up and less than 15.In addition, composition bottom zone 13b's constitutes the number of fiber (N in fiber with change point 1814) it is preferably 1 It is more than root, more preferably more than 5, and preferably less than 15, more preferably less than 15, specifically, Preferably more than 1 and less than 15, more preferably more than 5 and less than 15.In addition, constituting lateral zones 13c structure There is the number of fiber (N of change point 18 into fiber15) it is preferably more than 5, more preferably more than 10, and preferably For less than 20, more preferably less than 20, specifically, preferably more than 5 and less than 20, more preferably More than 10 and less than 20.The assay method of number of fiber with change point 18 is as described below.
[constitute top region 13a, bottom zone 13b or lateral zones 13c constitutes the number of fiber in fiber with change point 18 Assay method]
There is the number of fiber of change point 18 in composition fiber 11 on constituting top region 13a, scanning electron is used Microscope, is to be amplified near the summit of convex strip portions 13 for the top position by the thickness of non-woven fabrics along the grade timesharing of Z-direction 3 Observation (is adjusted to that the multiplying power of the fibre profile of 30~60 fibers can be measured;50~500 times), randomly select 20 and constitute top Area 13a composition fiber 11, counts 20 and constitutes the fiber count in fiber 11 with change point 18.Have 1 between fused portion During the situation of the change point 18 more than individual, the fiber count with change point 18 is set to, when with multiple situations, 1 is also set to Root.Be set to composition top region 13a constitutes the number of fiber in fiber with change point 18.Determine and carried out with position at 3, Carry out the number of fiber that mean deviation is set to have change point 18 in the composition top region 13a of sample composition fiber.Together Sample, the number of fiber in fiber 11 with change point 18 is constituted on constitute bottom zone 13b, for by the thickness of non-woven fabrics It is to be measured and obtain near the bottom point in recessed bar portion 14 along the lower portion of the grade timesharing of Z-direction 3.Similarly, on constituting side Area of portion 13c's constitutes the number of fiber in fiber 11 with change point 18, for by the thickness of non-woven fabrics along the grade timesharing of Z-direction 3 Central part be measured and obtain.It should be noted that as sweep electron microscope, being had using JEOL's share The JCM-5100 (trade name) of limit company manufacture.
The non-woven fabrics 1B of present embodiment for example can be used in surficial sheets, the configuration for being configured at the relative surface side of skin Used in non-skin with respect to the back-sheet of surface side and the disposable diaper or physiology of the absorber between two sheet material The absorbent commodities such as cotton wool.The surface patch in the member of formation that the absorbent commodity especially can be formed by non-woven fabrics 1B Material is formed the liquid permeability sublevel being configured between the surficial sheets and the absorber by non-woven fabrics 1B.If by nothing Spin cloth 1B and form the surficial sheets, then due to the non-woven fabrics that non-woven fabrics 1B is concaveconvex structure, so the contact area with skin Rate is reduced, it is more difficult to rubbed.If in addition, the surficial sheets or the sublevel are formed by non-woven fabrics 1B, due to nonwoven Cloth 1B is the non-woven fabrics of concaveconvex structure, so resistance against compression is improved, buffering sense is improved, and can prevent bleeding back for body fluid.
On non-woven fabrics 1B thickness, integral thickness of non-woven fabrics 1B when side view is set to sheet thickness TS, passed through The non-woven fabrics 1B of bumps bending local thickness is set to thickness TL.Sheet thickness TSAs long as being carried out suitably adjusting according to purposes, When the situation of the surficial sheets as absorbent commodity or sublevel, preferably more than 0.5mm, more preferably more than 1mm, and Preferably below 7mm, more preferably below 5mm, specifically, preferably more than 0.5mm and below 7mm, more preferably 1mm with Upper and below 5mm.By being set to the scope, body fluid absorption speed when using is accelerated, and can suppress self-priming acceptor returns liquid, realizes More appropriate resiliency.
Thickness TLCan be different in each position in non-woven fabrics 1B, as long as being carried out suitably adjusting according to purposes.In During the situation of surficial sheets or sublevel as absorbent commodity, top region 13a thickness TL1Preferably more than 0.1mm, it is more excellent Elect more than 0.2mm, and preferably below 3.0mm, more preferably below 2.0mm, specifically, preferably more than 0.1mm as And below 3.0mm, more preferably more than 0.2mm and below 2.0mm.Bottom zone 13b thickness TL2Preferably more than 0.1mm, more Preferably more than 0.2mm, and preferably below 3.0mm, more preferably below 2.0mm, specifically, preferably 0.1mm with Upper and below 3.0mm, more preferably more than 0.2mm and below 2.0mm.Lateral zones 13c thickness TL3Preferably more than 0.1mm, More preferably more than 0.2mm, and preferably below 3.0mm, more preferably below 2.0mm, specifically, preferably 0.1mm Above and below 3.0mm, more preferably more than 0.2mm and below 2.0mm.By being set to the scope, body fluid absorption when using Speed is accelerated, and can suppress self-priming acceptor returns liquid, realizes more appropriate resiliency.
Sheet thickness TSAnd thickness TLIt is measured using following method.
Sheet thickness TSAssay method in non-woven fabrics 1B apply 0.05kPa load in the state of, surveyed using thickness Determine device to be measured.Thickness tester uses the laser displacement gauge that Omron companies manufacture.Thickness measurement is determined at 10, is calculated Go out their average value and be set to thickness.
Thickness TLThe digital microscope VHX-900 that is manufactured by KEYENCE of determination method, with about 20 times or so amplification sheet materials Section, thus determine the thickness of each layer.
When overlooking non-woven fabrics 1B, as long as the spacing between top region 13a adjacent in Y-direction is suitably adjusted according to purposes Section, when the situation of the surficial sheets as absorbent commodity or sublevel, preferably more than 1mm, more preferably 1.5mm with On, and preferably below 15mm, more preferably below 10mm, specifically, preferably more than 1mm and below 15mm are more excellent Elect more than 1.5mm and below 10mm as.
In addition, non-woven fabrics 1B Unit Weight is also dependent on non-woven fabrics 1B particular use, in as absorbent commodity During the situation of surficial sheets or sublevel, in terms of the overall average value of sheet material, preferably 15g/m2More than, more preferably 20g/m2With On, and preferably 50g/m2Hereinafter, more preferably 40g/m2Hereinafter, specifically, preferably 15g/m2Above and 50g/m2With Under, more preferably 20g/m2Above and 40g/m2Below.
In addition, in the surface of non-woven fabrics 1B composition fiber 11 also a small amount of fibre staining can be adhered in the stage of raw material The fibre finishs such as agent, antistatic property agent, lubricant, hydrophilizing agent.
As the method for making fibre finish be attached to the surface for constituting fiber 11, various public affairs can be used with no particular limitation The method known.It can such as enumerate:Spraying coating, the coating carried out using slit type coater, the coating carried out using roller transfer, Impregnating in fibre finish.These processing can be carried out for the fiber before networking, also can be by the various methods of fiber utilization Carried out after networking.But must be handled before the processing of following heat blows.Surface attachment has the fiber of fibre finish For example by hot blast blast type drying machine, enter at the substantially low temperature of the fusing point compared with polyvinyl resin (such as less than 120 DEG C) Row drying.
The non-woven fabrics of (the 2nd invention) of the invention is manufactured by possessing the manufacture method of the non-woven fabrics of following steps:It is molten Step is closed, it is to make the intersection point between the composition fiber of the web comprising high elongation fiber via fused portion heat fused, and Form fibre sheet material;And stretching step, it is the fibre sheet material is stretched in one direction.On the present invention (the 2nd hair It is bright) non-woven fabrics manufacture method an embodiment, exemplified by the preferable production process for enumerating the non-woven fabrics 1B, and one side The one side of reference picture 11 is illustrated.In Figure 11, it is schematically indicated the preferred manufacture used in non-woven fabrics 1B manufacture method Device 100B.Manufacture device 100B can suitably be used in the manufacture of hot-wind nonwoven cloth.Manufacture device 100B is from manufacturing step Upstream side sequentially possesses net forming portion 200, hot blast processing unit 300 and extension section 400 towards downstream.
As shown in figure 11, net forming portion 200 possesses net forming apparatus 201.As net forming apparatus 201, cotton carding can be used Machine.As carding machine, carding machine phase usually used in the technical field with absorbent commodity can be used with no particular limitation Same person.According to non-woven fabrics 1B particular use, other net manufacture devices, such as gas spinning equipment also can be used to replace carding machine.
As shown in figure 11, hot blast processing unit 300 possesses cover 301.In in cover 301, hot blast is blowed using hot blast mode.Separately Outside, hot blast processing unit 300 possesses the conveyer belt 302 of the ring-shaped comprising aeration net.Conveyer belt 302 is surrounded in cover 301.It is defeated Band 302 is sent to be formed by the resins such as PET or metal.
The temperature and heat treatment time in the hot blast in cover 301 are blowed preferably such that the institute of composition fiber 11 of web 10 Comprising the mode of intersection point heat fused of high elongation fiber be adjusted.Specifically, the temperature of hot blast is preferably to be adjusted to ~30 DEG C of temperature high 0 DEG C relative to the fusing point for constituting the minimum resin of fusing point in fiber 11 of web 10.During heat treatment Between be preferably be adjusted to 1 second~5 seconds according to the temperature of hot blast.In addition, just promoting to constitute the further interlacing between fiber 11 For viewpoint, the wind speed of hot blast is preferably 0.3m/ seconds~1.5m/ seconds or so.In addition, conveyance speed be preferably 5m/min~ 100m/min or so.
As shown in Figure 11, Figure 12, extension section 400 possesses being capable of intermeshing a pair concavo-convex rollers 401,402.A pair concavo-convex Roller 401,402 is formed in the way of it can heat, and respectively with big footpath convex portion 403,404 and path recess (not shown) in roll shaft The mode being alternately arranged on direction is formed.Concavo-convex roller 401,402 can be heated also can be without being easy for making following fibre plates For the viewpoint for the high elongation fiber stretching that material 1a composition fiber 11 is included, in the situation of the concavo-convex roller 401,402 of heating When heating-up temperature be preferably the glass transition temperature highest resin being set in high elongation fiber glass transition temperature Below the fusing point of the minimum resin of fusing point more than degree and in high elongation fiber.More preferably compared with the glass transition temperature of fiber Spend more than high 10 DEG C of temperature and below temperature of low 10 DEG C compared with fusing point, more preferably the glass transition temperature compared with fiber More than high 20 DEG C of temperature and below temperature of low 20 DEG C compared with fusing point.For example, using the fiber as core/sheath structure in fiber When 67 DEG C of glass transition temperature, PE (sheath) of 135 DEG C of PET (core)/- 20 DEG C of glass transition temperature, the fusing point of 258 DEG C of fusing point During the situation heated to it, be preferably heated to more than 67 DEG C and less than 135 DEG C, be more preferably heated to more than 77 DEG C and Less than 125 DEG C, more preferably it is heated to more than 87 DEG C and less than 115 DEG C.
In addition, as shown in figure 13, it is convex in adjacent on the roll axial direction of concavo-convex roller 401 big footpath in manufacture device 100B 403,403 interval (spacing) and 404,404 between big footpath convex portion adjacent on the roll axial direction of concavo-convex roller 402 between portion Interval (spacing) be identical interval (spacing) w, the high elongation fiber that fibre sheet material 1a composition fiber 11 is included Successfully stretched in stretching device, it is described to be adjacent to fused portion from minor diameter part to the change point of large-diameter portion, make skin feel Become for good viewpoint, interval (spacing) w is preferably more than 1mm, particularly preferably more than 1.5mm, and is preferably Below 10mm, particularly preferably below 8mm, specifically, preferably more than 1mm and below 10mm, particularly preferably 1.5mm with Upper and below 8mm.For same viewpoint, as shown in figure 13, the intrusion t of a pair of concavo-convex rollers 401,402 is (in roll axial direction The interval on the summit and the summit of big footpath convex portion 404 of upper adjacent big footpath convex portion 403) it is preferably more than 1mm, particularly preferably More than 1.2mm, and preferably below 3mm, particularly preferably below 2.5mm, specifically, preferably more than 1mm and 3mm with Under, particularly preferably more than 1.2mm and below 2.5mm.Also, for same viewpoint, mechanical stretching multiplying power is preferably 1.5 More than times, particularly preferably more than 1.7 times, and preferably less than 3.0 times, particularly preferably less than 2.8 times, specifically, Preferably more than 1.5 times and less than 3.0 times, particularly preferably more than 1.7 times and less than 2.8 times.
Manufacture method to the non-woven fabrics 1B using the manufacture device 100B constituted with more than is illustrated.
First, as shown in figure 11, it is fine using the composition of the chopped fiber shape with high elongation fiber in net forming portion 200 Dimension 11 forms web 10 (net forming step) as raw material by the use of the net forming apparatus 201 as carding machine.Utilize net form The state being loosely complexed between its composition fiber 11 is in into the web 10 manufactured by device 201, is not yet obtained as piece The conformality of material.
Then, as shown in figure 11, the intersection point warp constituted between fiber 11 of the web 10 comprising high elongation fiber is made Fibre sheet material 1a (fuse step) is formed by the heat fused of fused portion 12.Specifically, web 10 is transported to conveyer belt 302 On, in during hot blast processing unit 300 is by cover 301, hot blast is blowed in hot blast mode.Blowed if so in hot blast mode Hot blast, then between the composition fiber 11 of web 10 while further interlacing, make the intersection point of be complexed fiber carry out heat Fuse (reference picture 14 (a)), and manufacture the fibre sheet material 1a with sheet conformality.
Then, as shown in figure 11, the web 1a after fusion is stretched (stretching step) in one direction.It is specific and Speech, using with being transported as the web 1a after the fusion of the conformality of sheet material between a pair of concavo-convex rollers 401,402, such as Figure 14 (a) shown in~Figure 14 (c), web 1a is stretched, and 1 between adjacent fused portion 12,12 constitutes shape in fiber 11 Into the big large-diameter portion 17 of the fibre diameter clamped by the small minor diameter part 16,16 of 2 fibre diameters, and will from the minor diameter part 16 to The change point 18 of the large-diameter portion 17 is formed at 1/3 to the interval T between the adjacent fused portion 12,12 from the fused portion 12 In the range of.If being described in detail, the intersection point between composition fiber 11 will be made as shown in Figure 14 (a) via fused portion 12 The fibre sheet material 1a of heat fused is transported between a pair of concavo-convex rollers 401,402, makes web 1a edges and operating direction (MD, traveling Direction) orthogonal orthogonal direction (CD, roll axial direction) stretching.Drawn in making fibre sheet material 1a along orthogonal direction (CD, roll axial direction) When stretching, shown in such as Figure 14 (a), by the region between adjacent fused portion 12,12 fixed between composition fiber 11 in orthogonal Energetically stretched on direction (CD, roll axial direction).Especially as shown in Figure 14 (b), in each by what is fixed between composition fiber 11 The vicinity of fused portion 12, easily occurs local contraction first, on 1 composition fiber 11 between adjacent fused portion 12,12, 2 minor diameter parts 16,16 are formed at two ends, the part clamped by 2 minor diameter parts 16,16 turns into large-diameter portion 17, so as to be formed by 2 The large-diameter portion 17 that individual minor diameter part 16,16 is clamped.In this way, in the vicinity of each fused portion 12, local contraction easily occurs first, so It is formed on from minor diameter part 16 to the change point 18 of large-diameter portion 17 from the fused portion 12 between the adjacent fused portion 12,12 Interval T 1/3 in the range of.
Also, on 1 composition fiber 11 between the adjacent fused portion 12,12 of a part, as shown in Figure 14 (c) It is further stretched, makes on orthogonal direction (CD, roll axial direction) in the state of tensile leeway (elongate space) is remained Large-diameter portion 17 between the adjacent fused portion 12,12 is stretched, and minor diameter part 16 is formed in large-diameter portion 17.
As described above, according to the manufacture method of the non-woven fabrics 1B using manufacture device 100B, can continuously and expeditiously make Make the non-woven fabrics 1B for possessing the composition fiber 11 shown in Figure 10.As shown in figure 11, manufactured non-woven fabrics 1B temporarily batched and After the form keeping of roller, roll out and use from the roller.Or, in non-woven fabrics 1B manufacture device 100B subsequent step production Line implements processing, so as to be continuously manufactured by target product.
On the non-woven fabrics 1B manufactured in this way, as shown in Figure 10, it is conceived to 1 constituted in fiber 11 and constitutes fibre Dimension 11, is configured at from the fused portion 12 to adjacent from the minor diameter part 16 for being adjacent to fused portion 12 to the change point 18 of large-diameter portion 17 Fused portion 12,12 between interval T 1/3 in the range of, therefore, become soft and skin feel become good.Especially Eye constitutes fiber 11 in 1, if being formed with multiple minor diameter parts 16 between adjacent fused portion 12,12, skin feel becomes More preferably.For the viewpoint for being easy for playing such a effect, constitute fiber 11 and preferably only include high elongation fiber.
When assuming that being mixed with the situation of elastomer in composition fiber 11, non-woven fabrics can be stretched when shrinking, therefore And when being easy to the manufacture method and mechanical stretching multiplying power identical situation with non-woven fabrics 1B, also it is difficult to the change for producing fibre diameter Change.Therefore, when being mixed with the situation of elastomer in composition fiber 11, it is difficult to the portion that extreme variation occurs for fibre diameter occur Position is change point 18, and easily forms the position continuously gradually changed from minor diameter part 16 to large-diameter portion 17.Due to being mixed with bullet Property fiber, so the position continuously gradually changed being thusly-formed may not locally around be stretched in fusion points, it is molten Chalaza is nearby it would be better to say that randomly observed.It should be noted that for making the more preferable viewpoint of skin feel, also preferably Elastomer is free of to constitute fiber 11.
In addition, non-woven fabrics 1B is the non-woven fabrics of concaveconvex structure, and it is less than top region with lateral zones 13c fibre density The mode of 13a fibre density and bottom zone 13b fibre density is formed.Therefore, between lateral zones 13c fiber distance compared with top Distance is broad between area 13a and bottom zone 13b fiber, so aeration overall non-woven fabrics 1B, logical fluidity are improved.And then, By the way that to make to be formed by way of lateral zones 13c fibre density is minimum, convex strip portions 13 become easily to follow the skin of wearer Motion, can be achieved good skin feel.
In addition, non-woven fabrics 1B is the non-woven fabrics of concaveconvex structure, and it is constituted the institute of fiber 11 to constitute 1 of lateral zones 13c The number for the change point 18 having more than constitute 1 of the top region 13a number for constituting the change point 18 that fiber 11 has and The mode for the number that constitute bottom zone 13b 1 constitutes the change point 18 that fiber 11 has is formed.Therefore, following effect is played Really:Convex strip portions 13 become easily to follow the motion of the skin of wearer, realize good skin feel.
The non-woven fabrics of (the 1st invention) of the invention can be fitted not by any limitations of non-woven fabrics 1A of the present embodiment Work as change.
In addition, the manufacture method of the non-woven fabrics of (the 1st invention) of the invention is not any by the manufacture method of the embodiment Limitation, can suitably be changed.
For example, non-woven fabrics 1A is as shown in figure 1, in convex strip portions 13 of the striated of direction (X-direction) extension and recessed The non-woven fabrics for the concaveconvex structure that bar portion 14 is alternately arranged, but also can be to make convex portion with all directions of X-direction and Y-direction Discontinuously mode in column is configured at certain intervals, and forms the nonwoven of the three-dimensional concaveconvex structure of the configuration pattern of sawtooth clathrate Cloth.In addition, for making the viewpoint that the conformality of concaveconvex structure is improved, can be in the nonwoven that concaveconvex structure is configured on another non-woven fabrics Cloth is simultaneously fitted, or also can implement Embossing processing to the non-woven fabrics of concaveconvex structure.In addition, non-woven fabrics 1A also can not be for concaveconvex structure For the non-woven fabrics of flat structures.
In addition, according to the manufacture method of the non-woven fabrics 1A using the manufacture device 100, by web 1a edges and machinery side Stretch, but can be also allowed to along operating direction (MD, traveling side to (MD, direct of travel) orthogonal orthogonal direction (CD, roll axial direction) To) extension.When the situation so stretched along operating direction (MD, direct of travel), as long as making intermeshing a pair concavo-convex rollers 401st, 402 convex portions possessed are configured at side face along rotation direction of principal axis.
In addition, according to the non-woven fabrics 1A of the use manufacture device 100 manufacture method, also can be in use net forming portion Between 200 net forming step and the fuse step for using hot blast processing unit 300 or in the fusion using hot blast processing unit 300 The application step of fibre finish coating part is set using between step and stretching step using extension section 400.The coating is walked As long as before the rapid stretching step in using extension section 400.
The non-woven fabrics of (the 2nd invention) of the invention can be fitted not by any limitations of non-woven fabrics 1B of the present embodiment Work as change.
In addition, the manufacture method of the non-woven fabrics of (the 2nd invention) of the invention is not any by the manufacture method of the embodiment Limitation, can suitably be changed.
For example, non-woven fabrics 1B is as shown in figure 8, in convex strip portions 13 of the striated of direction (X-direction) extension and recessed The non-woven fabrics for the concaveconvex structure that bar portion 14 is alternately arranged, but also can be to make convex portion with all directions of X-direction and Y-direction Discontinuously mode in column is configured at certain intervals, and forms the nonwoven of the three-dimensional concaveconvex structure of the configuration pattern of sawtooth clathrate Cloth.In addition, for making the viewpoint that the conformality of concaveconvex structure is improved, can be in the nonwoven that concaveconvex structure is configured on another non-woven fabrics Cloth is simultaneously fitted, or also can implement Embossing processing to the non-woven fabrics of concaveconvex structure.In addition, non-woven fabrics 1B also can not be for concaveconvex structure For the non-woven fabrics of flat structures.
In addition, according to the manufacture method of the non-woven fabrics 1B using the manufacture device 100B, by web 1a edges and machinery The orthogonal orthogonal direction (CD, roll axial direction) in direction (MD, direct of travel);Stretching, but can also be allowed to along operating direction (MD, OK Enter direction) stretching.In so along operating direction (MD, direct of travel) stretch situation when, as long as make intermeshing a pair it is recessed The convex portion that convex roller 401,402 possesses is configured at side face along rotation direction of principal axis.
The part omitted the description in one embodiment and the important document only having in an embodiment can divide Other embodiment is not suitably applied to, in addition, the important document in each embodiment suitably can mutually be put between embodiment Change.
On the embodiment, and then disclose following non-woven fabrics.
A kind of non-woven fabrics of the > of < 1, it possesses fused portion formed by multiple intersection point heat fuseds made between composition fiber,
The composition fiber includes high elongation fiber,
It is conceived to 1 composition fiber, this composition fiber has straight by 2 fibers between the adjacent fused portion The big large-diameter portion of fibre diameter of the small minor diameter part clamping in footpath,
The water-wetness of the minor diameter part is less than the water-wetness of the large-diameter portion.
The > of < 2 non-woven fabrics that the > of < 1 are recorded as described, wherein, the contact angle of the minor diameter part connects with the large-diameter portion The difference (the former-the latter) of feeler is more than 1 degree, and more preferably more than 5 degree, be even more preferably more than 10 degree, and excellent Elect less than 25 degree as, more preferably less than 20 degree, be even more preferably less than 15 degree, specifically, preferably 1 degree with Go up and less than 25 degree, more preferably more than 5 degree and less than 20 degree, be even more preferably more than 10 degree and less than 15 degree.
The > of < 3 non-woven fabrics that the > of the < 1 or > of < 2 are recorded as described, wherein, the contact angle of the minor diameter part is preferably 60 degree More than, more preferably more than 70 degree, be even more preferably more than 80 degree, and preferably less than 100 degree, further preferably It is even more preferably less than 90 degree for less than 95 degree, it is specifically, preferably more than 60 degree and less than 100 degree, further excellent Elect more than 70 degree and less than 95 degree as, be even more preferably more than 80 degree and less than 90 degree.
The > of < 4 non-woven fabrics that any one of > of the > of < 1 to < 3 are recorded as described, wherein, the contact angle of the large-diameter portion is excellent Elect more than 55 degree as, more preferably more than 60 degree, be even more preferably more than 65 degree, and preferably less than 90 degree, enter One step is preferably less than 85 degree, is even more preferably less than 80 degree, specifically, preferably more than 55 degree and less than 90 degree, More preferably more than 60 degree and less than 85 degree, be even more preferably more than 65 degree and less than 80 degree.
The > of < 5 non-woven fabrics that any one of > of the > of < 1 to < 4 are recorded as described, wherein, the fibre diameter of the minor diameter part (diameter L16) relative to fibre diameter (the diameter L of the large-diameter portion17) ratio (L16/L17) it is preferably more than 0.5, further Preferably more than 0.55, and preferably less than 0.8, more preferably less than 0.7, specifically, preferably more than 0.5 and Less than 0.8, more preferably more than 0.55 and less than 0.7.
The > of < 6 non-woven fabrics that any one of > of the > of < 1 to < 5 are recorded as described, wherein, the fused portion is adjacent to certainly The change point of the minor diameter part to the large-diameter portion is configured at from the fused portion to the interval between the adjacent fused portion In the range of 1/3,
It is recessed that the non-woven fabrics is the convex strip portions of striated that extend in one direction and recessed bar portion is alternately arranged The non-woven fabrics of male structure,
The non-woven fabrics has top region, bottom zone and positioned at the lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
Constitute the lateral zones constitutes the number of fiber (N in fiber with change point15) relative to the composition top Area constitutes the number of fiber (N in fiber with change point13) ratio or relative to the composition fiber for constituting the bottom zone In have change point number of fiber (N14) ratio (N15/N13, N15/N14) it is preferably more than 2, more preferably more than 5, And preferably less than 20, more preferably less than 20, it is more than 2 and less than 20, preferably more than 5 and 20 specifically Below.
The > of < 7 non-woven fabrics that any one of > of the > of < 1 to < 6 are recorded as described, wherein, it is attached with the composition fiber Fibre finish,
The fibre finish includes the malleable composition of tool.
The > of < 8 absorbent commodities that the > of < 7 are recorded as described, wherein, the malleable composition of tool is to be attached to fibre At low temperature easily in the excellent composition of the mobility under the extended surface and low temperature of fiber during the surface of dimension.
The > of < 9 non-woven fabrics that the > of the < 7 or > of < 8 are recorded as described, wherein, the malleable composition of tool is poly- organic Siloxanes.
The > of < 10 non-woven fabrics that the > of < 9 are recorded as described, wherein, the polysiloxane is selected from polydimethylsiloxanes In alkane, polydiethylsiloxane, poly- dipropyl radical siloxane.
The > of < 11 non-woven fabrics that any one of > of the > of < 7 to < 10 are recorded as described, wherein, the fibre finish also contains There is hydrophilic composition.
The > of < 12 non-woven fabrics that the > of < 11 are recorded as described, wherein, the hydrophilic composition uses amphion surface Activating agent or nonionic surfactant.
The > of < 13 non-woven fabrics that the > of < 12 are recorded as described, wherein, the amphion surfactant is glycine betaine Type amphion surfactant, preferably alkyl (carbon number 1~30) glycine betaine, more preferably carbon number 16~22 The alkyl betaine of (such as stearyl).
The > of < 14 non-woven fabrics that the > of < 12 are recorded as described, wherein, the nonionic surfactant is selected from glyceride Fat acid esters, poly- (being preferably n=2~10) fatty acid glyceride, sorbitan carboxylic esterses, polyol fatty acid ester are (preferred For the carbon number 8~60) of aliphatic acid, polyoxy alkylidene (addition molal quantity 2~20) alkyl (carbon number 8~22) acid amides, It is polyoxy alkylidene (addition molal quantity 2~20) alkyl (carbon number 8~22) ether, polyoxy alkylidene modified silicone, amino modified In silicone.
The > of < 15 non-woven fabrics that any one of > of the > of < 7 to < 14 are recorded as described, wherein, the fibre finish also contains There is hydrophobic combination.
The > of < 16 non-woven fabrics that the > of < 15 are recorded as described, wherein, the hydrophobic combination is selected from alkylphosphonate, following In anion surfactant represented by formula (1) etc.,
[changing 6]
(in formula, Z represent can comprising ester group, amide groups, amido, polyoxy alkylidene, ether or double bond carbon number 1~ The alkyl chain of 12 straight or branched, R1And R2Separately represent can comprising ester group, amide groups, polyoxy alkylidene, ether or The alkyl of the straight or branched of the carbon number 2~16 of double bond, X represents-SO3M、-OSO3M or-COOM, M represent H, Na, K, Mg, Ca or ammonium).
The > of < 17 non-woven fabrics that the > of < 16 are recorded as described, wherein, the alkylphosphonate is the list that carbochain is 16~18 Or dialkyl phosphate it is complete in and/or part neutralize salt.
The > of < 18 non-woven fabrics that any one of > of the > of < 1 to < 17 are recorded as described, wherein, the composition fiber is only included High elongation fiber.
The > of < 19 non-woven fabrics that the > of < 18 are recorded as described, wherein, high elongation fiber does not include flexible (elasticity Body) and the elastic fibre that is stretched, in following fiber:Obtained in low speed progress melt spinning after composite fibre Heated without stretch processing and/or processing of crispaturaing, it is thus obtained to make the crystalloid of resin by heating State changes so as to the thermally extensible fiber of length extension;Or use the resin such as polypropylene or polyethylene and will be with respect to spinning The fiber that speed is set to relatively low condition and manufactured;Or into the low polyethylene-polypropylene copolymer of crystallinity or polypropylene Dry-mixed polyethylene and the fiber for carrying out spinning and manufacturing.
The > of < 20 non-woven fabrics that the > of the < 18 or > of < 19 are recorded as described, wherein, the high elongation in the non-woven fabrics is fine The ratio of dimension is more than 50 mass %, preferably more than 80 mass %, also, particularly preferably 100 mass %.
The > of < 21 non-woven fabrics that any one of > of the > of < 1 to < 20 are recorded as described, wherein, the high elongation fiber meaning Finger in high elongation but also is also in not only high elongation in the stage of the manufactured non-woven fabrics in the stage of raw fibre Fiber.
The > of < 22 non-woven fabrics that any one of > of the > of < 18 to < 21 are recorded as described, wherein, the high elongation fiber Elongation in the stage of raw material be preferably more than 100%, more preferably more than 200%, more preferably more than 250%, And preferably less than 800%, more preferably less than 500%, more preferably less than 400%, specifically 100% with Upper and less than 800%, preferably more than 200% and less than 500%, more preferably more than 250% and less than 400%.
The > of < 23 non-woven fabrics that any one of > of the > of < 18 to < 22 are recorded as described, wherein, the high elongation fiber Elongation in non-woven fabrics stage be more than 60%, preferably more than 70%, more preferably more than 80%, and be preferably Less than 200%, more preferably less than 150%, more preferably less than 120%, specifically, preferably more than 60% and Less than 200%, more preferably more than 70% and less than 170%, more preferably more than 80% and less than 150%.
The > of < 24 non-woven fabrics that any one of > of the > of < 1 to < 23 are recorded as described, wherein, the fused portion is adjacent to certainly The change point of from the minor diameter part to the large-diameter portion be configured at from the fused portion between the adjacent fused portion Every 1/3 in the range of.
The > of < 25 non-woven fabrics that any one of > of the > of < 1 to < 24 are recorded as described, wherein, it is conceived to 1 composition Fiber, is configured with multiple large-diameter portions between the adjacent fused portion.
The > of < 26 non-woven fabrics that any one of > of the > of < 1 to < 25 are recorded as described, wherein, the non-woven fabrics is at one The non-woven fabrics for the concaveconvex structure that the convex strip portions for the striated that side is upwardly extended and recessed bar portion are alternately arranged.
The > of < 27 non-woven fabrics that the > of < 26 are recorded as described, wherein, the non-woven fabrics has top region, bottom zone and is located at Lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
The fibre density of the lateral zones is less than the fibre density of the top region and the fibre density of the bottom zone.
The > of < 28 non-woven fabrics that the > of the < 25 or > of < 27 are recorded as described, wherein, the non-woven fabrics has top region, bottom Area and positioned at the lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
Constitute the lateral zones constitutes the structure of the number of fiber more than the composition top region in fiber with change point Number of fiber into fiber with change point and the fibrous root with change point in the composition fiber of the composition bottom zone Number.
The > of < 29 non-woven fabrics that the > of < 7 are recorded as described, it is formed by constituting fiber as follows:In to constituting fibre comprising described The web of dimension carries out making the fibre finish be attached to this composition fiber before stretch processing, and in compared with polyvinyl resin The composition fiber for being dried and obtaining at the substantially low temperature of fusing point (such as less than 120 DEG C).
The > of < 30 non-woven fabrics that any one of > of the > of < 1 to < 29 are recorded as described, wherein, between the composition fiber Intersection point is abutment, and the abutment is the fused portion.
A kind of absorbent commodities of the > of < 31, its have be configured at skin with respect to surface side surficial sheets, be configured at non-skin With respect to the back-sheet and the absorber between two sheet material of surface side,
The surficial sheets are formed by any one of described > of the > of < 1 to < 30 non-woven fabrics recorded.
The > of < 32 as described any one of > of the > of < 1 to < 30 record non-woven fabrics, it possess it is multiple make composition fiber it Between intersection point heat fused formed by fused portion,
The composition fiber includes high elongation fiber,
It is conceived to 1 composition fiber, this composition fiber has straight by 2 fibers between the adjacent fused portion The big large-diameter portion of fibre diameter of the small minor diameter part clamping in footpath,
It is configured at from the change point of the minor diameter part to the large-diameter portion that are adjacent to the fused portion from the fused portion To 1/3 of the interval between the adjacent fused portion.
The > of < 33 non-woven fabrics that the > of < 32 are recorded as described, wherein, fibre diameter (the diameter L of the minor diameter part16) preferably For more than 5 μm, more preferably more than 6.5 μm, particularly preferably more than 7.5 μm, and preferably less than 28 μm, further Preferably less than 20 μm, particularly preferably less than 16 μm, specifically, preferably more than 5 μm and less than 28 μm, further preferably For more than 6.5 μm and less than 20 μm, particularly preferably more than 7.5 μm and less than 16 μm.
The > of < 34 non-woven fabrics that any one of the > of < 32 or the > of < 32 are recorded as described, wherein, the fiber of the large-diameter portion Diameter (diameter L17) it is preferably more than 10 μm, more preferably more than 13 μm, particularly preferably more than 15 μm, and preferably 35 Below μm, more preferably less than 25 μm, particularly preferably less than 20 μm, specifically, preferably more than 10 μm and 35 μm Hereinafter, more preferably more than 13 μm and less than 25 μm, particularly preferably more than 15 μm and less than 20 μm.
The > of < 35 non-woven fabrics that any one of > of the > of < 32 to < 34 are recorded as described, wherein, the change point is by drawing Stretch and fibre diameter is changed and formed.
The > of < 36 non-woven fabrics that any one of > of the > of < 32 to < 35 are recorded as described, wherein, the nonwoven is distributed in 20 Constituting in fiber has more than 1, is preferably more than 5, the structure with the change point of more preferably more than 10 Into fiber.
The > of < 37 absorbent commodities that the > of < 6 are recorded as described, wherein, have in the composition fiber for constituting the top region Number of fiber (the N of the change point13) it is preferably more than 1, more preferably more than 5, and preferably less than 15, More preferably less than 15, specifically, preferably more than 1 and less than 15, more preferably more than 5 and 15 Below root.
The > of < 38 non-woven fabrics that the > of the < 6 or > of < 37 are recorded as described, wherein, in the composition fiber for constituting the bottom zone Number of fiber (N with the change point14) it is preferably more than 1, more preferably more than 5, and preferably 15 Hereinafter, more preferably less than 15, specifically, preferably more than 1 and less than 15, more preferably 5 with Go up and less than 15.
The > of < 39 37 non-woven fabrics recorded of any one of the > or > of < 38 of >, < of < 6 as described, wherein, constitute the side Area of portion constitutes the number of fiber (N in fiber with the change point15) be preferably more than 5, more preferably 10 with On, and preferably less than 20, more preferably less than 20, specifically, preferably more than 5 and less than 20, More preferably more than 10 and less than 20.
The > of < 40 non-woven fabrics that any one of > of the > of < 32 to < 39 are recorded as described, wherein, the composition fiber is only wrapped Containing non-elastic fiber.
The > of < 41 non-woven fabrics that any one of > of the > of < 32 to < 40 are recorded as described, wherein, the high elongation fiber Fiber number in the stage of raw material be preferably more than 1.0dtex, more preferably more than 2.0dtex, and preferably 10.0dtex with Under, more preferably below 8.0dtex, specifically, preferably more than 1.0dtex and below 10.0dtex, more preferably More than 2.0dtex and below 8.0dtex.
The > of < 42 non-woven fabrics that any one of > of the > of < 32 to < 41 are recorded as described, wherein, it is conceived to 1 composition Fiber, is configured with multiple large-diameter portions between the adjacent fused portion.
The > of < 43 non-woven fabrics that any one of > of the > of < 32 to < 42 are recorded as described, wherein, it is conceived to 1 composition Fiber, possesses more than 1 and less than 5 between the adjacent fused portion, is preferably described in more than 1 and less than 3 Large-diameter portion.
The > of < 44 non-woven fabrics that any one of > of the > of < 32 to < 43 are recorded as described, wherein, the non-woven fabrics is one The non-woven fabrics for the concaveconvex structure that the convex strip portions for the striated that individual side upwardly extends and recessed bar portion are alternately arranged.
The > of < 45 non-woven fabrics that the > of < 44 are recorded as described, wherein, the non-woven fabrics has top region, bottom zone and is located at Lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
The fibre density of the lateral zones is less than the fibre density of the top region and the fibre density of the bottom zone.
The > of < 46 non-woven fabrics that any one of > of the > of < 32 to < 45 are recorded as described, wherein, the non-woven fabrics is one The non-woven fabrics for the concaveconvex structure that the convex strip portions for the striated that individual side upwardly extends and recessed bar portion are alternately arranged,
The non-woven fabrics has top region, bottom zone and positioned at the lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
Fibre density (the D of wall portion between the bottom zone15) relative to the fibre density (D of the top region13)、 Or relative to the fibre density (D of the bottom zone14) ratio (D15/D13, D15/D14) it is preferably more than 0.15, it is further excellent Elect more than 0.2, and preferably less than 0.9 as, more preferably less than 0.8, specifically more than 0.15 and 0.9 with Under, preferably more than 0.2 and less than 0.8.
The > of < 47 non-woven fabrics that the > of < 46 are recorded as described, wherein, the fibre density (D of the top region13) it is preferably 80 Root/mm2More than, more preferably 90/mm2More than, and preferably 200/mm2Hereinafter, more preferably 180/ mm2Hereinafter, specifically 80/mm2Above and 200/mm2Hereinafter, preferably 90/mm2Above and 180/mm2With Under.
The > of < 48 non-woven fabrics that the > of the < 46 or > of < 47 are recorded as described, wherein, the fibre density (D of the bottom zone14) Preferably 80/mm2More than, more preferably 90/mm2More than, and preferably 200/mm2Hereinafter, further preferably For 180/mm2Hereinafter, specifically 80/mm2Above and 200/mm2Hereinafter, preferably 90/mm2Above and 180 Root/mm2Below.
The > of < 49 non-woven fabrics that any one of > of the > of < 46 to < 48 are recorded as described, wherein, the fiber of the bottom zone Density (D15) it is preferably 30/mm2More than, more preferably 40/mm2More than, and preferably 80/mm2Hereinafter, enter One step is preferably 70/mm2Hereinafter, specifically 30/mm2Above and 80/mm2Hereinafter, preferably 40/mm2More than And 70/mm2Below.
The > of < 50 non-woven fabrics that any one of > of the > of < 45 to < 49 are recorded as described, wherein, constitute the lateral zones Constituting, there is the number of fiber of change point to be more than the fiber in the composition fiber for constitute the top region with change point in fiber There is the number of fiber of change point in radical and the composition fiber of the composition bottom zone.
A kind of manufacture methods of non-woven fabrics of the > of < 51, it comprises the following steps:Fuse step, it imparts fibre to make to include The intersection point constituted between fiber of web of the high elongation fiber of inorganic agent is tieed up via fused portion heat fused;And
Stretching step, it is, in after the fuse step, the web after fusion to be stretched in one direction;
In the stretching step, the web is stretched, and 1 structure between the adjacent fused portion Formed into fiber by the big large-diameter portion of the fibre diameter of the small minor diameter part clamping of 2 fibre diameters, and make the minor diameter part Water-wetness is less than the water-wetness of the large-diameter portion.
The manufacture method of the > of < 52 non-woven fabrics that the > of < 51 are recorded as described, wherein, will be described in the stretching step Fibre sheet material is stretched, and described constitute in fiber of 1 between the adjacent fused portion forms small by 2 fibre diameters The big large-diameter portion of fibre diameter of minor diameter part clamping, and melted being formed at from the minor diameter part to the change point of the large-diameter portion from this Rise in the range of 1/3 of the interval to the adjacent fused portion in conjunction portion.
The > of < 53 as described the > of < 52 record non-woven fabrics manufacture method, wherein, in the manufacture method of the non-woven fabrics The manufacture device used possesses extension section,
The extension section possess can intermeshing a pair the 1st concavo-convex rollers and the 2nd concavo-convex roller,
Interval (spacing) w between big footpath convex portion adjacent on the roll axial direction of the described 1st concavo-convex roller and in described the Interval (spacing) w on the roll axial direction of 2 concavo-convex rollers between adjacent big footpath convex portion is preferably more than 1mm, particularly preferably More than 1.5mm, and preferably below 10mm, particularly preferably below 8mm, specifically more than 1mm and below 10mm, excellent Elect more than 1.5mm and below 8mm as.
The > of < 54 as described any one of the > of < 52 or the > of < 53 record non-woven fabrics manufacture method, wherein, the described 1st Concavo-convex roller and the 2nd concavo-convex roller intrusion t (in the big footpath convex portion of the 1st concavo-convex roller adjacent on roll axial direction summit with The interval on the summit of the big footpath convex portion of the 2nd concavo-convex roller) it is preferably more than 1mm, particularly preferably more than 1.2mm, and be preferably Below 3mm, particularly preferably below 2.5mm, specifically more than 1mm and below 3mm, preferably more than 1.2mm and 2.5mm Below.
The > of < 55 as described any one of > of the > of < 52 to < 54 record non-woven fabrics manufacture method, wherein, the described 1st The mechanical stretching multiplying power of concavo-convex roller and the 2nd concavo-convex roller is preferably more than 1.5 times, particularly preferably more than 1.7 times, and excellent Elect less than 3.0 times as, particularly preferably less than 2.8 times, specifically more than 1.5 times and less than 3.0 times, preferably 1.7 times Above and less than 2.8 times.
A kind of non-woven fabrics of the > of < 56, it is by the manufacture method of the records of any one of > of the > of < 51 to < 55 as described Manufacture.
A kind of absorbent commodities of the > of < 57, its be be configured at skin with respect to surface side surficial sheets, be configured at non-skin Back-sheet of the skin with respect to surface side and the absorber person between two sheet material, and
The surficial sheets by the > of < 32 to < 50 >, < 56 the non-woven fabrics recorded of any one of > formed.
Embodiment
Hereinafter, the non-woven fabrics of the present invention is described in more detail by embodiment.However, the scope of the present invention is not implemented by this Any limitation of example.
[embodiment 1A]
Use the manufacture device 100 shown in Fig. 4, the embodiment 1A of the form shown in manufacture Fig. 1 and Fig. 2 non-woven fabrics.Will Supply to the composition fiber of manufacture device 100 and be shown in following table 1.It is coated on the composition such as table for the fibre finish for constituting fiber Shown in 1, contain in fibre finish as the polysiloxane for having malleable composition, and except tool it is malleable into Also hydrophilic composition and hydrophobic combination (alkylphosphonate, anion surfactant) are contained beyond point.As shown in table 1, structure High elongation fiber is only included into fiber, for the fiber without elastic (elastomer).In addition, high elongation fiber is core is PET and sheath portion are the concentric type sheath-core type conjugate fiber of polyethylene.The elongation of high elongation fiber is 350%.In addition, on manufacture device 100, between the big footpath convex portion that a pair of concavo-convex rollers 401,402 possess 404,404 interval (spacing) is 2.0mm, and the intrusion of a pair of concavo-convex rollers 401,402 is 1.2mm, and mechanical stretching multiplying power is 1.9 times.Need Bright, fibre finish is coated on before stretching step to composition fiber.
[embodiment 2A]
On the manufacture device 100 in embodiment 1A, the intrusion of a pair of concavo-convex rollers 401,402 is changed to 1.4mm, will Mechanical stretching multiplying power is changed to 2.1 times, in addition, to manufacture embodiment 2A non-woven fabrics with embodiment 1A identical modes.
[embodiment 3A]
On the manufacture device 100 in embodiment 1A, the intrusion of a pair of concavo-convex rollers 401,402 is changed to 1.6mm, will Mechanical stretching multiplying power is changed to 2.3 times, in addition, to manufacture embodiment 3A non-woven fabrics with embodiment 1A identical modes.
[embodiment 4A]
By the composition of the fibre finish in embodiment 1A it is as shown in table 1 as changed, in addition, with embodiment 1A identical modes manufacture embodiment 4A non-woven fabrics.
[embodiment 5A]
By the composition of the fibre finish in embodiment 1A it is as shown in table 1 as changed.In addition, in embodiment 1A Manufacture device 100, the intrusion of a pair of concavo-convex rollers 401,402 is changed to 1.4mm, mechanical stretching multiplying power is changed to 2.1 Times.In addition, to manufacture embodiment 5A non-woven fabrics with embodiment 1A identical modes.
[embodiment 6A]
By the composition of the fibre finish in embodiment 1A it is as shown in table 1 as changed.In addition, in embodiment 1A Manufacture device 100, the intrusion of a pair of concavo-convex rollers 401,402 is changed to 1.6mm, mechanical stretching multiplying power is changed to 2.3 Times.In addition, to manufacture embodiment 6A non-woven fabrics with embodiment 1A identical modes.
[embodiment 7A]
By the fibre finish in embodiment 1A it is as shown in table 1 as changed.It is coated on the fiber treatment for constituting fiber Agent contains hydrophilic composition without having malleable composition.In addition, to manufacture reality with embodiment 1A identical modes Apply the non-woven fabrics of a 7A.
[embodiment 8A]
By the composition of the fibre finish in embodiment 1A it is as shown in table 1 as changed.In addition, in embodiment 1A Manufacture device 100, the intrusion of a pair of concavo-convex rollers 401,402 is changed to 1.6mm, mechanical stretching multiplying power is changed to 2.3 Times.In addition, to manufacture embodiment 8A non-woven fabrics with embodiment 1A identical modes.
[embodiment 9A]
By the composition of the fibre finish in embodiment 1A it is as shown in table 1 as changed.In addition, in embodiment 1A Manufacture device 100, the intrusion of a pair of concavo-convex rollers 401,402 is changed to 1.6mm.In addition, with embodiment 1A Identical mode manufactures embodiment 9A non-woven fabrics.
[comparative example 1A]
By the fibre finish in embodiment 1A it is as shown in table 1 as changed.It is coated on the fiber treatment for constituting fiber Contain hydrophilic composition without having malleable composition in agent.In addition, fibre finish is coated on drawing to composition fiber Stretch and carried out after step.In addition, to manufacture comparative example 1A non-woven fabrics with embodiment 1A identical modes.
< evaluates >
On embodiment 1A~9A and comparative example 1A non-woven fabrics, thickness is determined by methods described, non-woven fabrics is calculated Unit Weight.These results are shown in table 1 below.In addition, determining the contact of minor diameter part 16 and large-diameter portion 17 by methods described Angle.These results are shown in table 1 below.
In addition, the non-woven fabrics on embodiment 1A~9A and comparative example 1A, by following methods to liquid residue, refer to Touch drying property and skin feel is evaluated.These results are shown in table 1 below.
[evaluation of liquid residue]
From the commercially available trade name of Kao Corporation " water suction Safety feel at ease middle amount use (~80cc) " (2014 Manufacture) middle taking-up absorber, by the absorber horizontal positioned taken out.In configuring embodiment 1A~9A on the absorber or compare Example 1A non-woven fabrics, and then cylindrical portion (inside dimension diameter 10mm, height 40mm) is configured at center in mounting on these The acrylic compounds plate of 200mm × 100mm oblong-shaped.In the pressure applied from acrylic compounds plate be 0.5kPa in the state of to Artificial urine 20g is once injected with 5g/sec speed in the cylindrical portion.After 7 seconds, removal acrylic compounds plate will be commercially available Toilet paper 2PL product fold 3 times, the absorption paper of the about 5cm being converted into × about 12cm sizes is placed on inlet, applied with 0.5k ρ a Plus-pressure 5 seconds.Thereafter pressure relief, is measured to the weight (g) for absorbing the toilet paper for having artificial urine.Subtracted from the weight The weight (g) of toilet paper before artificial urine absorption, the value is set to residue in the liquid residue (mg) of non-woven fabrics.The liquid The value of residual quantity (mg) is smaller, is judged as that liquid residue is more excellent, as high praise.
It should be noted that the composition of artificial urine is as described below.The mass % of urea 1.94, the matter of sodium chloride 0.7954 Measure %, the mass % of magnesium sulfate (heptahydrate) 0.11058, the mass % of calcium chloride (dihydrate) 0.06208, potassium sulfate 0.19788 mass %, the mass % of polyoxyethylene laurel ether 0.0035 and ion exchange water (surplus).
[evaluation of the dry to touch of non-woven fabrics]
The dry to touch of non-woven fabrics uses the print through time register that Lenzing Technik companies manufacture Lister, " the 153.0-02REPEATED Liquid Strike-Through according to EDANA (the industrial meeting of European non-woven fabrics) Time (repeating the liquid print through time) " methods are measured.So-called Liquid Strike-Through Time are (during liquid print through Between), represent that the physiological saline of specified quantitative is passed through to the time (second) needed for the back side from the surface of non-woven fabrics.Specifically, in examination Test on the bearing of machine and stack 10 special filter paper, non-woven fabrics is loaded thereon.Then, the offset plate with electrode is placed in On non-woven fabrics, physiological saline (sodium chloride in 500mL is 4.5g) 10ml is added from the liquid inlet being connected with offset plate, its The power supply of testing machine is connected afterwards.Testing machine is to the state from normal saline solution contact electrode to normal saline solution through non-woven fabrics Make water level reduction so as to which the time (second) untill normal saline solution non-contact electrode is measured.Measurement is carried out 3 times, is averaged Value is set to the penetration by liquid time of non-woven fabrics.The penetration by liquid time is shorter, represents that the liquid residue on surface is fewer, dry to touch Better.
[evaluation of skin feel]
The skin feel of non-woven fabrics asks 10 adult females to carry out sense evaluation.Specifically, according to point as shown below Base standard is scored, and the average value for the crew of each non-woven fabrics is rounded into integer word, so as to obtain.
5 points:The skin feel of non-woven fabrics is very good.
4 points:The skin feel of non-woven fabrics is good.
3 points:The skin feel of non-woven fabrics is common.
2 points:The skin feel of non-woven fabrics is poor.
1 point:The skin feel of non-woven fabrics is excessively poor.
[table 1]
[table 1]
According to the result of table 1, learn compared with comparative example 1A non-woven fabrics, in embodiment 1A~embodiment 9A non-woven fabrics The water-wetness of minor diameter part 16 and the water-wetness of large-diameter portion 17 change.Also, on embodiment 1A~embodiment 9A nonwoven Cloth, the water-wetness of minor diameter part 16 is less than the water-wetness of large-diameter portion 17.In addition, learning compared with comparative example 1A non-woven fabrics, implement The liquid residue on the surface of example 1A~embodiment 9A non-woven fabrics is few, and dry to touch is good.In addition, learning with comparative example 1A's Non-woven fabrics is compared, and embodiment 1A~embodiment 9A non-woven fabrics does not only have the good effect of dry to touch, in addition on an equal basis with On non-woven fabrics skin feel.
Hereinafter, the non-woven fabrics of (the 2nd invention) of the invention is described in more detail by embodiment.However, the present invention (the 2nd hair It is bright) scope not by any limitation of the embodiment.
[embodiment 1B]
Use the manufacture device 100B shown in Figure 11, the embodiment 1B of the form shown in manufacture Fig. 8 and Fig. 9 non-woven fabrics. The composition fiber for being fed to manufacture device 100B is shown in following table 2.As shown in table 2, constitute fiber and only include high elongation Fiber, for the fiber without elastic (elastomer).In addition, high elongation fiber be core for PET and Sheath portion is the concentric type sheath-core type conjugate fiber of polyethylene.The elongation of high elongation fiber is 350%.In addition, on manufacture 404,404 interval (spacing) is 2mm between device 100B, the big footpath convex portion that a pair of concavo-convex rollers 401,402 possess, and a pair recessed The intrusion of convex roller 401,402 is 1.2mm, and mechanical stretching multiplying power is 1.9 times.
[embodiment 2B]
On the manufacture device 100B in embodiment 1B, the intrusion of a pair of concavo-convex rollers 401,402 is changed to 1.6mm, Mechanical stretching multiplying power is changed to 2.3 times, in addition, to manufacture embodiment 2B nonwoven with embodiment 1B identical modes Cloth.
[embodiment 3B]
On the manufacture device 100B in embodiment 1B, the intrusion of a pair of concavo-convex rollers 401,402 is changed to 2.0mm, Mechanical stretching multiplying power is changed to 2.7 times, in addition, to manufacture embodiment 3B nonwoven with embodiment 1B identical modes Cloth.
[embodiment 4B]
By the composition fiber in embodiment 1B be changed to high elongation fiber elongation be 250% fiber, except this with Outside, to manufacture embodiment 4B non-woven fabrics with embodiment 1B identical modes.
[embodiment 5B]
By the composition fiber in embodiment 2B be changed to high elongation fiber elongation be 250% fiber, except this with Outside, to manufacture embodiment 5B non-woven fabrics with embodiment 2B identical modes.
[embodiment 6B]
By the composition fiber in embodiment 3B be changed to high elongation fiber elongation be 250% fiber, except this with Outside, to manufacture embodiment 6B non-woven fabrics with embodiment 3B identical modes.
[comparative example 1B]
Composition fiber in embodiment 1B is changed to the composite fibre stretched.Specifically, the composite fibre is stretched Length is 80% stretching fiber.In addition to fiber is changed, to manufacture comparative example 1B nonwoven with embodiment 1B identical modes Cloth.
[comparative example 2B]
Composition fiber in embodiment 3B is changed to the composite fibre stretched.Specifically, the composite fibre is stretched Length is 80% stretching fiber.In addition to fiber is changed, to manufacture comparative example 2B nonwoven with embodiment 3B identical modes Cloth.
[comparative example 3B]
The method using the autofrettage described in patent document 1 as foundation of utilization, using in comprising embodiment 4B as being constituted The high elongation fiber of fiber and the mode of elastomer form comparative example 3B non-woven fabrics.It should be noted that a pair concavo-convex Intrusion, the mechanical stretching multiplying power of roller 401,402 are same with embodiment 4B.
[comparative example 4B]
The autofrettage recorded using patent document 1 is utilized as the method for foundation, using in comprising embodiment 6B as being constituted fibre The high elongation fiber of dimension and the mode of elastomer form comparative example 4B non-woven fabrics.It should be noted that a pair of concavo-convex rollers 401st, 402 intrusion, mechanical stretching multiplying power are same with embodiment 6B.
< evaluates >
On embodiment 1B~6B and comparative example 1B~4B non-woven fabrics, by following methods to from minor diameter part 16 to big footpath The presence ratio of the change point 18 in portion 17 is evaluated, when there is the situation of change point 18, determines the position of change point 18.Separately Outside, the fibre diameter of minor diameter part 16 and large-diameter portion 17 is determined by methods described.These results are shown in table 2 below.
In addition, on embodiment 1B~6B and comparative example 1B~4B non-woven fabrics, by methods described to top region 13a, Bottom zone 13b or lateral zones 13c fibre density and the change point 18 in top region 13a, bottom zone 13b or lateral zones 13c Number is measured.These results are shown in table 2 below.
In addition, on embodiment 1B~6B and comparative example 1B~4B non-woven fabrics, by following methods to skin feel and Logical fluidity is evaluated.These results are shown in table 2 below.
[evaluation of the presence ratio of change point 18]
Randomly select the composition fiber of 20 non-woven fabrics, the scanning electron manufactured using limited company of JEOL Microscope:JCM-5100 (trade name), amplifies 110 times by each composition fiber and is observed, observe and whether there is from minor diameter part 16 to big The change point 18 in footpath portion 17.There is ratio to calculate in the following manner.Exist ratio (%)=have change point 18 number of fiber/ 20 × 100
Herein, so-called change point 18, as described above do not include continuously gradually changed from position from minor diameter part to large-diameter portion, Or change from minor diameter part continuously through position from multiple stages to large-diameter portion, because in constitute fiber composition core the 1st Peeling-off and state that fibre diameter changes between resin component and the 2nd resin component for constituting sheath portion, it is intended that fiber The position of extreme variation occurs for diameter.
[evaluation of the position of change point 18]
When situation with change point 18, the interval T between adjacent fused portion 12,12 is subjected to 3 deciles, and distinguish For the region AT of a side of fused portion 12, the region BT of another side of fused portion 12, middle section CT.Also, observe change point 18 are configured at the region AT, the region BT or middle section CT which region.
< evaluation results >
A:In the fiber with change point, with many change points be present in the region AT or described region BT and It is also present in middle section CT fiber.
B:In the fiber with change point, exist only in the region AT or described region BT's with many change points Fiber.
C:In the fiber with change point, middle section CT fiber is existed only in many change points.
[evaluation of the skin feel of non-woven fabrics]
Please 20 observers with can't see non-woven fabrics state touch, by flexibility, pliability, resiliency etc. feel integrate Property as non-woven fabrics skin feel, evaluated according to the determinating reference in 5 following stages.As a result with the average value of 20 Represent.
< metewands >
5:It is very good
4:Well
3:Commonly
2:Difference
1:It is excessively poor
If it should be noted that the evaluation result of the average value of 20 is more than 4, for that can expect that skin is arrived in user's cognition The improvement of skin sense of touch and the grade for obtaining high praise.
[evaluation of the liquid permeability of non-woven fabrics]
The liquid permeability of non-woven fabrics uses the print through time register that Lenzing Technik companies manufacture Lister, " the 153.0-02REPEATED Liquid Strike-Through according to EDANA (the industrial meeting of European non-woven fabrics) Time " methods are measured.So-called Liquid Strike-Through Time, represent the physiological saline of specified quantitative from non-woven fabrics Surface was passed through to the time (second) needed for the back side.Specifically, in stacking 10 special filter paper, Yu Qi on the bearing of testing machine Upper mounting non-woven fabrics.Then, the offset plate with electrode is placed on non-woven fabrics, from the liquid inlet being connected with offset plate Addition physiological saline (eats note (trade name) raw in the big tomb of Japanese Pharmacopoeia physiological saline liquid of great Zhong Pharmacy stock Co., Ltd manufacture 10mL, opens thereafter the power supply of testing machine.Testing machine from the state of contact with normal saline electrode to physiological saline to passing through nonwoven Cloth and make water level reduction so as to which the time (second) untill physiological saline non-contact electrode is measured.Measurement is carried out 3 times, is put down Average is set to the penetration by liquid time of non-woven fabrics.The penetration by liquid time is shorter, represents that liquid permeability is better.
[table 2]
According to the result of table 2, it is known that compared with comparative example 1B~comparative example 4B non-woven fabrics, embodiment 1B~embodiment 6B Non-woven fabrics by region AT or region BT exist change point 18 from from minor diameter part 16 to large-diameter portion 17, in other words with raising There is low rigid minor diameter part 16 in the adjacent mode of the rigid fused portion 12 of non-woven fabrics, so as to improve the flexibility of non-woven fabrics, skin Skin sense of touch is good.
And then learn, embodiment 1B~embodiment 6B non-woven fabrics is more in lateral zones 13c due to the position of change point 18, It is good skin feel so convex strip portions 13 become easily to follow the motion of the skin of wearer.In addition, learning embodiment 1B ~embodiment 6B non-woven fabrics is more in lateral zones 13c due to the position of change point 18, and lateral zones 13c fibre density is low, so Liquid permeability is good.
In addition, according to the result of table 2, comparative example 1B~2B non-woven fabrics due to using the low stretching fiber of elongation, therefore And be peeling in constituting between the 1st resin component of composition core of fiber and the 2nd resin component for constituting sheath portion because of stretching. Therefore, sheath portion, which peels off position, can hook skin of disputing over trifles, skin feel reduction.Due to being difficult to keep concaveconvex shape, core exposes and waterproof Change, so liquid passage time extends.Then, comparative example 3B non-woven fabrics is flexible to be mixed in embodiment 4B non-woven fabrics The composition of fiber.Highest wisdom as described above is mixed with elastomer, then non-woven fabrics is stretched when shrinking, so it is easy to machinery During stretching ratio identical situation, also it is difficult to form change point, fibre density is also difficult reduction.Thus, comparative example 3B nonwoven Cloth is difficult to produce the effect that the raising of skin feel is improved with logical fluidity.Then, comparative example 4B non-woven fabrics is in embodiment 6B Non-woven fabrics in be mixed with the composition of elastomer.Highest wisdom as described above is mixed with elastomer, then non-woven fabrics one side shrinks one Face is stretched, so the position i.e. change point of extreme variation occurs for the fibre diameter for being difficult to occur this case, and is easily formed from path The position that portion 16 is continuously gradually changed to large-diameter portion 17.In comparative example 4B non-woven fabrics, due to being mixed with elastomer, therefore And the position continuously gradually changed formed is difficult to the local elongation near fusion points, therefore observed not near fusion points Go out.Thus, comparative example 4B non-woven fabrics is difficult to produce the effect that the raising of skin feel is improved with logical fluidity.
[industrial applicability]
According to (the 1st invention) of the invention, the liquid residue on surface is few, and dry to touch is improved.
According to (the 2nd invention) of the invention, skin feel can be made more preferable.

Claims (57)

1. a kind of non-woven fabrics, it possesses fused portion formed by multiple intersection point heat fuseds made between composition fiber, wherein,
The composition fiber includes high elongation fiber,
It is conceived to 1 composition fiber, this composition fiber has small by 2 fibre diameters between the adjacent fused portion Minor diameter part clamping the big large-diameter portion of fibre diameter,
The water-wetness of the minor diameter part is less than the water-wetness of the large-diameter portion.
2. non-woven fabrics as claimed in claim 1, wherein,
The difference of the contact angle of the contact angle of the minor diameter part and the large-diameter portion is for the former-the latter be more than 1 degree and 25 degree with Under.
3. non-woven fabrics as claimed in claim 1 or 2, wherein,
The contact angle of the minor diameter part is more than 60 degree and less than 100 degree.
4. non-woven fabrics as claimed in claim 1 or 2, wherein,
The contact angle of the large-diameter portion is more than 55 degree and less than 90 degree.
5. non-woven fabrics as claimed in claim 1 or 2, wherein,
The fibre diameter of the minor diameter part is diameter L16Fibre diameter relative to the large-diameter portion is diameter L17Ratio with L16/L17It is expressed as more than 0.5 and less than 0.8.
6. non-woven fabrics as claimed in claim 1 or 2, wherein,
It is configured at from the change point of the minor diameter part to the large-diameter portion that are adjacent to the fused portion from the fused portion to phase In the range of 1/3 of interval between the adjacent fused portion,
The non-woven fabrics is the concavo-convex knot that the convex strip portions of the striated extended in one direction and recessed bar portion are alternately arranged The non-woven fabrics of structure,
The non-woven fabrics has top region, bottom zone and positioned at the lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
Constitute the lateral zones constitutes the number of fiber i.e. N in fiber with change point15Relative to the composition top region It is N to constitute the number of fiber with change point in fiber13Ratio N15/N13Or it is fine relative to the composition for constituting the bottom zone The number of fiber with change point is N in dimension14Ratio N15/N14For more than 2 and less than 20.
7. non-woven fabrics as claimed in claim 1 or 2, wherein,
Fibre finish is attached with the composition fiber,
The fibre finish includes the malleable composition of tool.
8. non-woven fabrics as claimed in claim 7, wherein,
The tool malleable composition is when being the surface for being attached to fiber at low temperature easily in the extended surface of fiber and low The excellent composition of mobility under temperature.
9. non-woven fabrics as claimed in claim 7, wherein,
The malleable composition of tool is polysiloxane.
10. non-woven fabrics as claimed in claim 9, wherein,
The polysiloxane is selected from dimethyl silicone polymer, polydiethylsiloxane, poly- dipropyl radical siloxane.
11. non-woven fabrics as claimed in claim 7, wherein,
The fibre finish also contains hydrophilic composition.
12. non-woven fabrics as claimed in claim 11, wherein,
The hydrophilic composition uses amphion surfactant or nonionic surfactant.
13. non-woven fabrics as claimed in claim 12, wherein,
The amphion surfactant is betaine type amphoteric ionic surfactant.
14. non-woven fabrics as claimed in claim 12, wherein,
The nonionic surfactant is selected from fatty acid glyceride, polyglyceryl fatty acid ester, sorbitan carboxylic esterses, many It is first alcohol fatty acid ester, polyoxyalkylene alkyl acid amides, polyoxyalkylene alkyl ether, polyoxy alkylidene modified silicone, amino modified Silicone.
15. non-woven fabrics as claimed in claim 7, wherein,
The fibre finish also contains hydrophobic combination.
16. non-woven fabrics as claimed in claim 15, wherein,
The hydrophobic combination is selected from alkylphosphonate, the anion surfactant represented by following formulas (1),
In formula, Z is represented can be comprising the straight of the carbon number 1~12 of ester group, amide groups, amido, polyoxy alkylidene, ether or double bond The alkyl chain of chain or side chain, R1And R2Separately representing can be comprising ester group, amide groups, polyoxy alkylidene, ether or double bond The alkyl of the straight or branched of carbon number 2~16, X represents-SO3M、-OSO3M or-COOM, M represent H, Na, K, Mg, Ca or Ammonium.
17. non-woven fabrics as claimed in claim 16, wherein,
The alkylphosphonate be carbochain be 16~18 list or dialkyl phosphate it is complete in and/or part neutralize salt.
18. non-woven fabrics as claimed in claim 1 or 2, wherein,
The composition fiber only includes high elongation fiber.
19. non-woven fabrics as claimed in claim 18, wherein,
High elongation fiber does not include elastic fibre that is flexible and being stretched, selected from following fiber:
Obtain after composite fibre and to be heated and/or be crispaturaed without stretch processing in carrying out melt spinning with low speed Processing, the thus obtained crystalline state for making resin by heating changes so as to the thermally extensible fiber of length extension; Or
Using polypropylene or polyvinyl resin and the fiber that will be set to relatively low condition with respect to spinning speed and manufacture;Or
Dry-mixed polyethylene and the fibre for carrying out spinning and manufacturing into the low polyethylene-polypropylene copolymer of crystallinity or polypropylene Dimension.
20. non-woven fabrics as claimed in claim 18, wherein,
The ratio of high elongation fiber in the non-woven fabrics is more than 50 mass %.
21. non-woven fabrics as claimed in claim 1 or 2, wherein,
The high elongation fiber mean not only in raw fibre stage in high elongation but also in the manufactured nonwoven The stage of cloth is also in the fiber of high elongation.
22. non-woven fabrics as claimed in claim 18, wherein,
The elongation of the high elongation fiber is more than 100% and less than 800% in the stage of raw material.
23. non-woven fabrics as claimed in claim 18, wherein,
The elongation of the high elongation fiber is more than 60% and less than 200% in the stage of non-woven fabrics.
24. non-woven fabrics as claimed in claim 1 or 2, wherein,
From the change point of the minor diameter part to the large-diameter portion that are adjacent to the fused portion be configured at from the fused portion to In the range of 1/3 of interval between the adjacent fused portion.
25. non-woven fabrics as claimed in claim 1 or 2, wherein,
It is conceived to 1 composition fiber, multiple large-diameter portions is configured between the adjacent fused portion.
26. non-woven fabrics as claimed in claim 1 or 2, wherein,
The non-woven fabrics is the concavo-convex knot that the convex strip portions of the striated extended in one direction and recessed bar portion are alternately arranged The non-woven fabrics of structure.
27. non-woven fabrics as claimed in claim 26, wherein,
The non-woven fabrics has top region, bottom zone and positioned at the lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
The fibre density of the lateral zones is less than the fibre density of the top region and the fibre density of the bottom zone.
28. non-woven fabrics as claimed in claim 26, wherein,
The non-woven fabrics has top region, bottom zone and positioned at the lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
Constituting constituting for the lateral zones has the number of fiber of change point fine more than the composition for constituting the top region in fiber Number of fiber in dimension with change point and the number of fiber with change point in the composition fiber of the composition bottom zone.
29. non-woven fabrics as claimed in claim 7, it is formed by constituting fiber as follows:
The fibre finish is set to be attached to this composition before stretch processing is carried out to the web comprising the composition fiber Fiber, and in the composition fiber for being dried and obtaining at the substantially low temperature of the fusing point compared with polyvinyl resin.
30. non-woven fabrics as claimed in claim 1 or 2, wherein,
Intersection point between the composition fiber is abutment, and the abutment is the fused portion.
31. non-woven fabrics as claimed in claim 1 or 2, it possesses multiple intersection point heat fuseds made between composition fiber and formed Fused portion,
The composition fiber includes high elongation fiber,
It is conceived to 1 composition fiber, this composition fiber has small by 2 fibre diameters between the adjacent fused portion Minor diameter part clamping the big large-diameter portion of fibre diameter,
It is configured at from the change point of the minor diameter part to the large-diameter portion that are adjacent to the fused portion from the fused portion to phase In the range of 1/3 of interval between the adjacent fused portion.
32. non-woven fabrics as claimed in claim 31, wherein,
The fibre diameter of the minor diameter part is diameter L16For more than 5 μm and less than 28 μm.
33. non-woven fabrics as claimed in claim 31, wherein,
The fibre diameter of the large-diameter portion is diameter L17For more than 10 μm and less than 35 μm.
34. non-woven fabrics as claimed in claim 31, wherein,
The change point makes fibre diameter change and be formed by stretching.
35. non-woven fabrics as claimed in claim 31, wherein,
The nonwoven is distributed in 20 and constitutes the composition fiber with the change point in fiber with more than 1.
36. non-woven fabrics as claimed in claim 6, wherein,
Constitute the top region constitutes the number of fiber i.e. N in fiber with the change point13For more than 1 and 15 with Under.
37. non-woven fabrics as claimed in claim 6, wherein,
Constitute the bottom zone constitutes the number of fiber i.e. N in fiber with the change point14For more than 1 and 15 with Under.
38. non-woven fabrics as claimed in claim 6, wherein,
Constitute the lateral zones constitutes the number of fiber i.e. N in fiber with the change point15For more than 5 and 20 with Under.
39. non-woven fabrics as claimed in claim 31, wherein,
The composition fiber only includes non-elastic fiber.
40. non-woven fabrics as claimed in claim 31, wherein,
The fiber number of the high elongation fiber is more than 1.0dtex and below 10.0dtex in the stage of raw material.
41. non-woven fabrics as claimed in claim 31, wherein,
It is conceived to 1 composition fiber, multiple large-diameter portions is configured between the adjacent fused portion.
42. non-woven fabrics as claimed in claim 31, wherein,
It is conceived to 1 composition fiber, possesses more than 1 and less than 5 described big between the adjacent fused portion Footpath portion.
43. non-woven fabrics as claimed in claim 31, wherein,
The non-woven fabrics is the concavo-convex knot that the convex strip portions of the striated extended in one direction and recessed bar portion are alternately arranged The non-woven fabrics of structure.
44. non-woven fabrics as claimed in claim 43, wherein,
The non-woven fabrics has top region, bottom zone and positioned at the lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
The fibre density of the lateral zones is less than the fibre density of the top region and the fibre density of the bottom zone.
45. non-woven fabrics as claimed in claim 31, wherein,
The non-woven fabrics is the concavo-convex knot that the convex strip portions of the striated extended in one direction and recessed bar portion are alternately arranged The non-woven fabrics of structure,
The non-woven fabrics has top region, bottom zone and positioned at the lateral zones between them,
The top of the convex strip portions is formed by top region, and the bottom in the recessed bar portion is formed by bottom zone,
The fibre density of lateral zones is D15Fibre density relative to the top region is D13Ratio D15/D13Or relative to institute State the fibre density i.e. D of bottom zone14Ratio D15/D14For more than 0.15 and less than 0.9.
46. non-woven fabrics as claimed in claim 45, wherein,
The fibre density of the top region is D13For 80/mm2Above and 200/mm2Below.
47. the non-woven fabrics as described in claim 45 or 46, wherein,
The fibre density of the bottom zone is D14For 80/mm2Above and 200/mm2Below.
48. the non-woven fabrics as described in claim 45 or 46, wherein,
The fibre density of the lateral zones is D15For 30/mm2Above and 80/mm2Below.
49. the non-woven fabrics as described in claim 44 or 45, wherein,
Constituting constituting for the lateral zones has the number of fiber of change point fine more than the composition for constituting the top region in fiber Number of fiber in dimension with change point and the number of fiber with change point in the composition fiber of the composition bottom zone.
50. a kind of absorbent commodity, its have be configured at skin with respect to surface side surficial sheets, be configured at non-skin surface side relatively Back-sheet and the absorber between two sheet material,
The surficial sheets are formed as the non-woven fabrics any one of claims 1 to 30.
51. a kind of manufacture method of non-woven fabrics, it comprises the following steps:
Fuse step, makes the intersection point constituted between fiber of the web comprising the high elongation fiber for imparting fibre finish Via fused portion heat fused, and
Stretching step, in after the fuse step, the web after fusion is stretched in one direction;
Wherein, in the stretching step, the web is stretched, and described in 1 between the adjacent fused portion Constitute and formed in fiber by the big large-diameter portion of the fibre diameter of the small minor diameter part clamping of 2 fibre diameters, and make the minor diameter part Water-wetness be less than the large-diameter portion water-wetness.
52. the manufacture method of non-woven fabrics as claimed in claim 51, wherein,
In the stretching step, it will be formed at from the minor diameter part to the change point of the large-diameter portion from the fused portion to adjacent In the range of 1/3 of interval between the fused portion.
53. the manufacture method of non-woven fabrics as claimed in claim 52, wherein,
The manufacture device used in the manufacture method of the non-woven fabrics possesses extension section,
The extension section possess can intermeshing a pair the 1st concavo-convex rollers and the 2nd concavo-convex roller,
Interval between big footpath convex portion adjacent on the roll axial direction of the described 1st concavo-convex roller and the roller in the described 2nd concavo-convex roller On direction of principal axis between adjacent big footpath convex portion at intervals of more than 1mm and below 10mm.
54. the manufacture method of the non-woven fabrics as any one of claim 52 or 53, wherein,
The intrusion of described 1st concavo-convex roller and the 2nd concavo-convex roller is more than 1mm and below 3mm.
55. the manufacture method of the non-woven fabrics as described in claim 52 or 53, wherein,
The mechanical stretching multiplying power of described 1st concavo-convex roller and the 2nd concavo-convex roller is more than 1.5 times and less than 3.0 times.
56. a kind of non-woven fabrics, it is manufactured by the manufacture method any one of claim 51~55.
57. a kind of absorbent commodity, its have be configured at skin with respect to surface side surficial sheets, be configured at non-skin surface side relatively Back-sheet and the absorber between two sheet material,
The surficial sheets are formed as the non-woven fabrics any one of the claim 31~49,56.
CN201580021105.8A 2014-10-17 2015-10-16 Non-woven fabrics Active CN106232888B (en)

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