CN1623018A - Three-dimensional sheet - Google Patents
Three-dimensional sheet Download PDFInfo
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- CN1623018A CN1623018A CNA028286510A CN02828651A CN1623018A CN 1623018 A CN1623018 A CN 1623018A CN A028286510 A CNA028286510 A CN A028286510A CN 02828651 A CN02828651 A CN 02828651A CN 1623018 A CN1623018 A CN 1623018A
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- fibrage
- fiber
- heat
- stereogram
- hot
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent 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
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent 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 absorbing medium
- A61F13/539—Absorbent 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 absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-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
- D04H1/54—Non-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
- D04H1/559—Non-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 the fibres being within layered webs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent 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
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
- A61F2013/51182—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with non-continuous bonding
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Laminated Bodies (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
A three-dimensional sheet (10) which comprises a first fibrous layer (1) comprising heat-shrinkable fibers which have undergone heat shrinkage, a second fibrous layer (2) which has been superposed on one side of the layer (1) and which comprises non-heat-shrinkable fibers as the main component and contains fusion-bondable fibers, and a third fibrous layer (3) superposed on the other side of the first fibrous layer (1) and comprising fusion-bondable fibers, wherein the first to third fibrous layers have fusion-bonded parts (4) arranged so as to form a given pattern in the three-dimensional sheet, the fusion-bonded parts (4) extend from the second fibrous layer (2) to the third fibrous layer (3), and the second fibrous layer (2) is convex in their parts other than the fusion-bonded parts (4).
Description
Technical field
The present invention relates to the surface and have desirable concavo-convex, Stereogram with leavening structure.
Background technology
In No. 3131557 communiques of special permission, put down in writing the pleat of the manying property nonwoven fabric that lamination is made of the non-thermal contraction fiber on the first fibrolaminar face that is containing the heat fusing binder fiber that is made of heat-shrinkable fiber and the fusing point resin lower than the thermal contraction initial temperature of this heat-shrinkable fiber second fibrage forms.Two fibrages become one at thickness direction by strand of hot is melt bonded, and the heat fusing stick portion becomes recess, become protuberance between this heat fusing stick portion, form a plurality of pleats of muscle shape on second fibrage.This many pleats property nonwoven fabric is prepared as follows: first fibrage and second fibrage are overlapped, under than the low temperature of the thermal contraction initial temperature of above-mentioned heat-shrinkable fiber by heat fusing bonding two fibrages are become one after, blow the above hot blast of above-mentioned heat shrink temperature, thereby make the thermal contraction of above-mentioned heat-shrinkable fiber.But in this nonwoven fabric, first fibrage and the second fibrolaminar heat fusing are bonding owing to depend on the above heat fusing binder fiber of 30～50 weight % that contains in first fibrage, and therefore two fibrolaminar engaging forces are limited.Therefore, above-mentioned heat fusing stick portion is peeled off easily when adding man-hour and use during the first fibrage thermal contraction and behind the nonwoven fabric, and consequently concavo-convex apperance becomes not distinct, perhaps can't obtain desirable concaveconvex shape sometimes.In addition, because the fusing point height of the melt bonded fiber of shrinkage temperature specific heat of above-mentioned heat-shrinkable fiber, heat fusing binder fiber fusing when therefore shrinking, liquor style variation, the uncomfortable sheet that directly contacts with skin that is used as.
In order to improve two fibrolaminar engaging forces, consider to improve the ratio of the hot-melt-bondable fiber that contains in the 1st fibrage, or bonding temperature or the pressure that adds man-hour of raising heat fusing, but if the former, the ratio of heat-shrinkable fiber reduces, the 1st fibrolaminar shrinkage becomes insufficient, might can't obtain desirable concaveconvex shape.In addition, if the latter, the hardening of heat fusing stick portion, its result descends the flexibility of sheet integral body, and liquor style worsens.
In addition, when above-mentioned many pleats property nonwoven fabric being fixed in other materials etc. and using, with the face of the 1st fibrage side and other materials equiphase surface to fixing, but, can not in the 1st fibrage, use the heat fusing binder fiber in a large number, in addition in order to ensure convergent force, because thermo-compressed such as heat embossing are carried out below the shrinkage temperature of heat-shrinkable fibre, therefore the heat-shrinkable fiber can not melt, even thermo-compressed such as employing heat embossing are fixed, can not obtain enough bond strengths.
Specially permit No. 3181195 communiques and put down in writing, by lamination and make a thermal contraction among the 1st and the 2nd melt bonded fibrage of portion of hot, make another protrude in the single face side and formed the nonwoven fabric of regular protuberance as the nonwoven fabric that is used for the recessed material of face fastener.This nonwoven fabric is fixed on other members by the above-mentioned fibrage side with thermal contraction and uses, in order to ensure convergent force, in this fibrage, can't use the heat fusing binder fiber in a large number, even therefore adopt thermo-compressed and other member engages such as heat embossing, can not obtain sufficient joint strength, even obtained, originally also not so good, liquor styles such as skin contact further worsen.
Summary of the invention
Therefore, the object of the present invention is to provide liquor style good,, and can form desirable concavo-convex Stereogram during fabrication with the thermo-compressed excellence of other materials etc.
In addition, the object of the present invention is to provide the Stereogram that can use the heat-shrinkable fiber to be engaged in the fixing means of the Stereogram on the fixation that constitutes by fibrous material securely.
The present invention is by providing following Stereogram to realize above-mentioned first purpose, this Stereogram be contain thermal contraction the 1st a fibrolaminar face of heat-shrinkable fiber on lamination (or stacked) based on the non-thermal contraction fiber and contain the 2nd fibrage of hot-melt-bondable fiber, lamination contains the 3rd fibrage of hot-melt-bondable fiber on the 1st fibrolaminar another face, wherein, the 1st fibrage to the 3 fibrages form the heat fusing stick portion with predetermined pattern in above-mentioned Stereogram, above-mentioned heat fusing stick portion extends through the 3rd fibrage from the 2nd fibrage, and the part of the 2nd fibrage beyond the above-mentioned heat fusing stick portion is to become convex (below, what refer to when being called the 1st invention is exactly this invention).
The present invention has realized above-mentioned second purpose by the fixing means that following Stereogram is provided, the fixing means of this Stereogram be on the 1st a fibrolaminar face that contains the heat-shrinkable fiber lamination based on the non-thermal contraction fiber and contain the 2nd fibrage of hot-melt-bondable fiber, and the 1st and the 2nd fibrage formed the junction surface of predetermined pattern and the 2nd fibrage side of the Stereogram that forms is fixed on the fixation that is made of fibrous material as the fixation side, wherein, make the 3rd fibrage that contains the hot-melt-bondable fiber between above-mentioned Stereogram and above-mentioned fixation, by heat embossing (or embossing) processing make they become one (below, what refer to when being called the 2nd invention is exactly this invention).
Description of drawings
Fig. 1 for expression as the Stereogram of an embodiment of the present invention's (the 1st invention) Stereogram with the generalized section of the fixation when using that is fixed.
Fig. 2 (a)～Fig. 2 (c) is respectively the plane of example of the formation pattern of the heat fusing stick portion that expression forms on the Stereogram.
Fig. 3 is the profile schema diagram of the width section of the sanitary napkin (absorbent commodity) of expression use Stereogram manufacturing.
Fig. 4 is the generalized section of an embodiment of the fixing means of expression the present invention's (the 2nd invention) Stereogram.
The specific embodiment
It is following that the present invention will be described according to its embodiment preferred and with reference to accompanying drawing.
Fig. 1 represents the pattern sectional view as the Stereogram 10 of the present invention's's (the 1st invention) a embodiment.Stereogram 10 has lamination the 2nd fibrage 2 on a face of the 1st fibrage 1 that contains the heat-shrinkable fiber, the 3-tier architecture of lamination the 3rd fibrage 3 on another face of the 1st fibrage 1.The 1st fibrage 1 is made of the aggregate of fiber.On the other hand, the 2nd fibrage 2 and the 3rd fibrage 3 are respectively by constituting with fiber variety classes that constitutes the 1st fibrage 1 and/or the fiber assembly that mixes.The 2nd fibrage 2 and the 3rd fibrage 3 are by the aggregate of the fiber of same kind and mixing, or the fiber assembly of variety classes and/or mixing constitutes.
During top perspective sheet 10, in this Stereogram 10, form the heat fusing stick portion 4 of the diamond check shape pattern shown in Fig. 2 (a).Heat fusing stick portion 4 forms by the 1st fibrage to the 3 fibrages that thermo-compressed partly is in laminated state.
Heat fusing stick portion 4 extends through the 3rd fibrage 3 from the 2nd fibrage 2.At the 2nd fibrage and the 1st fibrolaminar joint and the 1st fibrage and the 3rd fibrolaminar joint, under the state of difference top perspective sheet 10, fully overlap.Heat fusing stick portion 4 forms by the melting and solidification of heat fusing binder resin.As described later, the heat fusing binder resin preferably is contained in the 2nd fibrage 2 and the 3rd fibrage 3 with the state of the heat fusing binder fiber that contains it, even these two fibrolaminar heat fusing binder resin the 1st fibrolaminar resins fully fusing can fusion not soak into yet, bonding mutually and become 3 layers bonding.In addition, as required, preferably also be contained in the 1st fibrage.Preferred heat fusing stick portion 4 all extends through the 3rd fibrage from the 2nd fibrage at each heat fusing stick portion of Stereogram 10, and in addition, preferably each melt bonded part runs through the whole zone of the Stereogram thickness direction of this part.
In addition, each heat fusing stick portion can be circle in the present embodiment, but the shape of each heat fusing stick portion also can be ellipse, triangle or rectangle or their combination etc.In addition, can form and make the joint portion continuous shape, for example the wire of straight line or curve etc.The formation pattern of heat fusing stick portion 4 can be the pattern shown in for example Fig. 2 (b) and Fig. 2 (c).
Heat fusing stick portion 4 is with respect to the decisions such as concrete purposes by Stereogram 10 of the area ratio (area of the heat fusing stick portion 4 of per unit area Stereogram 10) of the area of Stereogram 10, but from improving the 1st fibrage to the 3 fibrolaminar bond strength aspects fully, and from fully forming the three-dimensional shape of convex by the 2nd fibrolaminar distortion to present bulk viewpoint, after the formation of heat fusing stick portion 4 and before the thermal contraction of the 1st fibrage 1, described area ratio is preferably 3～50%, be preferably 5～35% especially, after thermal contraction, it is preferably 6～90%, is preferably 10～70% especially.
The 1st fibrage 1 contains the heat-shrinkable fiber.This heat-shrinkable fiber is the state of thermal contraction in Stereogram 10.As the heat-shrinkable fiber, there is no particular restriction, can use known heat-shrinkable fiber.If use the potential crimping property fiber,,, be preferred therefore even also present elastomeric character as Stereogram 10 integral body owing to give the 1st fibrage 1 elastomeric character as the heat-shrinkable fiber.If Stereogram 10 has elastomeric character, when with Stereogram 10 during, become well the raising of the adaptability of this absorbent commodity for the servo-actuated of wearer's action as the member of formation of for example disposable absorbent article described later, preventing the liquid leakage effectively, is preferred therefore.
The potential crimping property fiber for example is the eccentric core-sheath-type composite fibre or the parallel composite fiber formation of composition with 2 kinds of different thermoplastic, polymeric materials of shrinkage factor.As its example, can list the spy and open flat 9-296325 communique or specially permit the fiber of putting down in writing in No. 2759331 specifications.As the example of 2 kinds of different thermoplastic, polymeric materials of shrinkage factor, can list for example combination of the copolymer (CoPET) of combination, polyethylene terephthalate (PET), polyethylene terephthalate and the polyethylene glycol isophthalate of ethylene-propylene random copolymer (EP) and polypropylene (PP).The heat-shrinkable fiber can be for cutting off staple fibre or long filament.Its thickness is preferably about 1～7dtex.
The thermal contraction initial temperature of heat-shrinkable fiber for example can be 90～110 ℃.So-called thermal contraction initial temperature is meant this fiber is placed in the stove that can heat up the observed temperature when this fiber begins to shrink in fact when heating up with certain speed.
The 1st fibrage 1 can be made of heat-shrinkable fiber 100%, perhaps can contain other fiber.As other fibers that contain in the 1st fibrage 1, can list heat fusing binder fiber described later, for example the heat fusing binder fiber that contains in the 2nd and/or the 3rd fibrage.
Can contain other fibers in the 1st fibrage 1, when Stereogram is made, never hinder the viewpoint of the contraction of heat-shrinkable fiber and set out, the amount of heat-shrinkable fiber is more than the 70 weight % with respect to the weight of the 1st fibrage 1, is preferably 90～100 weight % especially.
As the form of the 1st fibrage 1 before the thermal contraction, can list the formation fiber and be in the not web of fiber or the nonwoven fabric of engagement state.As the 1st fibrage 1 of web of fiber form, can list the web of fiber that contains the heat-shrinkable fiber and form with the carding machine method.As the 1st fibrage 1 of nonwoven fabric form, can list and contain the heat-shrinkable fiber, with the nonwoven fabric of various nonwoven fabric autofrettages manufacturings.As the autofrettage of nonwoven fabric, can list heat fusing Method for bonding, current interlacing method, needle point method, solvent welding method, spun-bond process, meltblown.
The 2nd fibrage 2 constitutes as main body with the non-thermal contraction fiber.So-called non-thermal contraction fiber in this explanation comprises the fiber that do not show heat-shrinkable and shows heat-shrinkable but do not produce both of fiber of thermal contraction in fact below the thermal contraction initial temperature of the heat-shrinkable fiber that the 1st fibrage contains.
From the aspect that the 1st fibrage becomes more three-dimensional, preferably, the amount of the non-thermal contraction fiber in the 2nd fibrage 2 is at least more than the 70 weight % with respect to the weight of the 2nd fibrage 2, is preferably more than the 90 weight %, is preferably 100 weight % especially.
In addition, from carrying out the viewpoint of three-dimensional and inotropic adjustment, preferably in the 2nd fibrage, contain the identical heat-shrinkable fiber of the heat-shrinkable fiber with in the 1st fibrage about 10～30 weight %.
The 2nd fibrage 2 and the 3rd fibrage 3 contain the hot-melt-bondable fiber respectively.The hot-melt-bondable fiber is to contain the heat fusing binder resin, and since the melting and solidification of this resin make can be melt bonded between the fiber fiber.From the aspect that the bond strength that further makes the heat fusing stick portion improves, the hot-melt-bondable fiber that contains in preferred the 2nd fibrage 2 and the 3rd fibrage 3 contains the low-melting heat fusing binder resin than the heat-shrinkable fiber that contains in the 1st fibrage 1 respectively.When the heat-shrinkable fiber in the 1st fibrage was the composite fibre of the composite fibre of core-sheath-type (off-centre or concentric type) or parallel type, the hot-melt-bondable fiber that contains in the preferred the 2nd and the 3rd fibrage contained the low-melting resin than the bonding composition of heat fusing of the sheath composition of core-sheath-type composite fibre or parallel composite fiber.
Here, the fusing point of heat-shrinkable fiber is meant the peak value when adopting DSC (differential scanning calorimetry (DSC)) to carry out heat of fusion mensuration.
From not making under the situation of shrinking with the 1st fibrage of contact skin, can make the heat fusing binder fiber fusion that contains in the 2nd fibrage and set out in bonding aspect, the fusing point of the heat fusing binder resin in the hot-melt-bondable fiber that contains in preferred the 2nd fibrage 2 and the 3rd fibrage 3 is lower more than 10 ℃ than the fusing point of the 1st fibrolaminar heat-shrinkable fiber, and is especially preferably low more than 20 ℃.When the hot-melt-bondable fiber was the composite fibre of multicomponent type, the preferred heat fusing binder resin that wherein fusing point is minimum was lower than the fusing point of the 1st fibrolaminar heat-shrinkable fiber.
In addition, the 1st fibrage is shunk, can make the heat fusing binder fiber fusing that contains in the 2nd fibrage and have enough then aspects of intensity and set out, the fusing point of the heat fusing binder resin in the hot-melt-bondable fiber that contains in preferred the 2nd fibrage 2 and the 3rd fibrage 3 is lower more than 30 ℃ than the heat shrink temperature of the 1st fibrolaminar heat-shrinkable fiber, and is especially preferably low more than 40 ℃.
In addition, from the 1st fibrage to the 3 fibrolaminar bond strengths are further improved, and their incorporate heat treated temperature conditions can be carried out at a lower temperature, set out in the further improved aspect of liquor style of Stereogram, the fusing point of the heat fusing binder resin in the fusing point of the heat fusing binder resin in the heat fusing binder fiber that preferred the 2nd fibrage 2 contains and the heat fusing binder fiber that the 3rd fibrage 3 contains is identical, or the fusing point difference of these 2 kinds of heat fusing binder resins is in 20 ℃, in 10 ℃.
From the aspect that the bond strength between the fibrage that makes heat fusing stick portion 4 improves and makes the liquor style of Stereogram become good, the amount of the heat fusing binder fiber that preferred the 2nd fibrage contains is 70～100 weight % with respect to the weight of the 2nd fibrage 2, is preferably 90～100 weight especially.
From the aspect that the bond strength between the fibrage that makes heat fusing stick portion 4 improves and makes the liquor style of Stereogram become good, and raising and other materials etc. particularly set out with the thermo-compressed aspect of fibrous material, the amount of the heat fusing binder fiber that preferred the 3rd fibrage contains is 70～100 weight % with respect to the weight of the 3rd fibrage 3, is preferably 90～100 weight % especially.
Example as the heat fusing binder fiber that contains in the 2nd fibrage 2 and the 3rd fibrage 3 can list polyethylene (PE), polypropylene (PP), polyethylene-propylene copolymer, polyethylene terephthalate (PET), polyester such as polybutylene terephthalate (PBT), polyethylene terephthalate-ethylene isophthalate copolymer, polyamide-ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, the ethylene-methyl methacrylate methyl terpolymer, ethylene-methyl methacrylate ethyl ester copolymer, the fiber that ethylene-methyl methacrylate methyl esters-acrylic acid 3 membered copolymers etc. constitute.In addition, also can use the core-sheath-type composite fibre or the parallel composite fiber that constitute by these thermoplastic, polymeric materials.These fibers can be short fiber or long filament.Its thickness is preferably about 1～7dtex.Heat fusing binder fiber when making the 1st fibrage 1 contain the heat fusing binder fiber can use the fiber identical with these.
As the form of the 2nd and the 3rd fibrage 2,3 before 1 thermal contraction of the 1st fibrage, can list the formation fiber and be in the not web of fiber or the nonwoven fabric of engagement state.The 2nd fibrage 2 before the thermal contraction and the form of the 3rd fibrage 3 can be identical or different.
If the 2nd fibrolaminar form is a web of fiber, by contraction the area of the 2nd fibrage 2 and even change of shape are become easily, and the 2nd fibrage 2 is heaved along thickness direction be convex, therefore preferred especially.In addition, owing to fill up with fiber in the protuberance of heaving, it is good to obtain resiliency, has the sheet of soft liquor style, is preferred therefore.When the 2nd fibrage 2 and/or the 3rd fibrage 3 were the form of web of fiber, this web of fiber for example can adopt that the carding machine method forms.The 2nd fibrage 2 forms protuberance 5 bulk and that fill up with the fiber that constitutes this web of fiber in the Stereogram 10 that is formed by this web of fiber, and fiber is along protuberance 5 orientations.Especially, if the 2nd fibrage 2 is the form of the web of fiber of employing carding machine method formation, the 2nd fibrage 2 becomes the structure of extremely dredging, and Stereogram 10 then of the present invention can see through or keep the high liquid of viscosity.In addition, the compression of Stereogram 10 when thickness direction compresses is also improved.As the high liquid of viscosity, can list soft stool or menses, be used for people's cleaning agent or humectant or be used for the cleaning agent of thing.
On the other hand, if the 2nd fibrolaminar form is a nonwoven fabric, has the advantage that conveying property is good and intensity is big before engaging and shrinking.In addition and since with need not make between the 2nd fibrolaminar formation fiber after the 1st fibrage engages melt bondedly, so also have the wide advantage of range of choice of shrinkage temperature.
The Stereogram 10 of the present embodiment is prepared as follows, for example, use known method to make the 1st fibrage to the 3 fibrages respectively, their overlapping so that the 1st fibrages 1 are clamped between the 2nd fibrage 2 and the 3rd fibrage 3, use then by between the concavo-convex roller or the heat embossing roller arrangement that constitutes of concavo-convex roller and flat roll, the 1st fibrage to the 3 fibrages that make lamination with predetermined pattern are (partly) thermo-compressed partly, then, heat treatment more than the heat shrink temperature of the heat-shrinkable fiber that contains by the 1st fibrage 1 makes this heat-shrinkable filament contraction.Heat-treating methods blows the method for hot blast except feeding to incorporate the 1st fibrage to the of lamination 3 fibrages, can also use methods such as microwave, steam, infrared ray, hot-rolling contact.
In addition, by thermo-compressed (heat embossing etc.) is carried out to fixing (being also referred to as fixation 6) sides such as other materials of Stereogram 10 in the 3rd fibrage side, can securely these Stereogram 10 hot pressing be received on this other materials etc., make between Stereogram 10 and the fixation to be difficult for peeling off.
Fig. 3 represents following state: with the 3rd fibrage side is this fixation side, by heat embossing processing the Stereogram 10 of above-mentioned formation is fixed on the absorber 61 and leakage prevention sheet 62 of sanitary napkin (absorbent commodity) of the fixation 6 that constitutes as fibrous material.
Promptly, in the middle section of sanitary napkin, Stereogram 10 is processed the surface that hot pressing is connected to the skin contact surface side of absorber 61 by the heat embossing that adopts hot sealing device, forms the central leakproof ditch of ring-type on the skin contact-making surface of sanitary napkin by this thermo-compressed part 71.In addition, Stereogram 10 is in the both sides longitudinally of sanitary napkin, similarly by adopting the heat embossing processing of hot sealing device, hot pressing is connected on the leakage prevention sheet that is configured on the absorber 61, by this thermo-compressed part 72, form an offside leakproof ditch in the both sides of the above-mentioned central leakproof ditch of the skin contact-making surface of sanitary napkin.In addition, the cardboard that the surface of the absorber of thermo-compressed part 71 adopts cellulosic fibre materials to constitute forms, and the leakage prevention sheet 62 in the thermo-compressed part 72 constitutes through laminated polyethylene on the fibrous material of cellulose family.In addition, the then property of leakage prevention sheet 62 is better, therefore laminate side (polyethylene) is used (also being same) towards the surface patch side in embodiment described later and comparative example.
In two thermo-compressed parts 71,72, carry out heat embossing at the employing hot sealing device and add man-hour, heat fusing binder resin in the 3rd fibrage is with the interfibrous state melting and solidification of the formation that enters fixation 6, so difficult the generation peeled off between Stereogram 10 and these fixations 6.
In addition, as hot sealing device, in sanitary napkin, disposable diaper etc., can use in the past the ditch that uses to form to form with hot sealing device etc. with hot sealing device or end seal part.In addition, in Fig. 3, omitted the diagram such as concavo-convex that forms on the surface of Stereogram 10.In sanitary napkin shown in Figure 3, use the surfacing (surface patch) of Stereogram 10 as the liquid permeability, between the backing material (back sheet) 8 of this Stereogram 10 and liquid impermeability, have the absorber 61 of liquid retainability.Stereogram 10 is being fixed on leakage prevention sheet 62 and the backing material 8 with hot-melt adhesive 91 near the both sides of absorber 61, and leakage prevention sheet 62 usefulness hot-melt adhesives 92 are fixed on the backing material 8.
Fig. 4 represents the preferred embodiment of the present invention's's (the 2nd invention) Stereogram fixing means, Stereogram 10 ' shown in Figure 4 is pressed with based on the non-thermal contraction fiber and contains the 2nd fibrage 2, the 1 fibrages 1 of hot-melt-bondable fiber and the heat fusing stick portion (bonding part) 4 that 2 formation of the 2nd fibrage have predetermined pattern on a face upper strata of the 1st fibrage 1 that contains the heat-shrinkable fiber.Stereogram 10 ' is except on another face of the 1st fibrage 1 lamination the 3rd fibrage, has the formation identical with above-mentioned Stereogram 10.In Stereogram 10 ', it is bonding that the 1st fibrage 1 and the 2nd fibrage 2 usefulness and Stereogram 10 same patterns carry out heat fusing, thereby form the melt bonded part 4 of above-mentioned predetermined pattern.The 1st fibrage 1 and the 2nd fibrage 2 be preferred separately constitute wait with Stereogram 10 in the 1st fibrage identical with the 2nd fibrage.
In the fixing means of the Stereogram of the present embodiment, when adopting embossing to process on the absorber 61 of the sanitary napkin (absorbent commodity) that Stereogram 10 ' is fixed to the fixation 6 that constitutes as fibrous material, make and the 3rd fibrage that contains the hot-melt-bondable fiber that this Stereogram 10 ' is made in addition between the 2nd fibrage 2 and fixation 6 of Stereogram 10 ', implement heat embossing processing from this Stereogram 10 ' side.
Adopt the fixing means of the present embodiment, implemented the part of heat embossing processing at the employing hot sealing device, identical with above-mentioned Stereogram 10, the melting and solidification of the heat fusing binder resin by the heat fusing binder fiber in the 1st fibrage and the 3rd fibrage engages the 2nd fibrage 2 and 3 of the 3rd fibrages to be one extremely securely, simultaneously add man-hour at heat embossing, because the heat fusing binder resin in the 3rd fibrage with the interfibrous state melting and solidification of the formation that is absorbed in fixation, therefore can obtain enough bond strengths between Stereogram and these fixations.
The present invention is not limited to state embodiment.
Stereogram of the present invention suitable as for example use 1 time or for several times after the just member of formation of discarded disposable.In addition, also can be as the recessed material (ring material) or the protruding material of face fastener.Suitable especially as disposable absorbent articles such as sanitary napkin or disposable diapers, sweep with cleaning piece or be used for the constituent material of people's disposable wipes such as cleaning piece.When being used as disposable absorbent article, when for example having the member of formation of absorbent commodity of the backing material of surfacing, liquid impermeability of liquid permeability and the absorber between two, the part of its member of formation can be as for example part of any member of surfacing, backing material or edge-on body flap.
When adopting heat embossing processing that Stereogram of the present invention is fixed in other materials etc. (fixation) and uses and in the fixing means of Stereogram,, can list the substrate sheets of disposable wipe etc. as the fixing fixation of Stereogram.But, particularly under the situation of the fixation that fibrous material constitutes, under the absorbers of disposable absorbent articles such as especially above-mentioned sanitary napkin or disposable diaper etc., the situation owing to the fixation that compresses the softness of being out of shape, effect of the present invention embodies more significantly.
Below in conjunction with embodiment the present invention is described in more detail.But scope of the present invention is not limited to this embodiment.
Embodiment
(1) the 1st fibrolaminar manufacturing
As the heat-shrinkable fiber, potential crimping property core-sheath-type composite fibre (the trade name CPP that uses ダ イ ワ ボ ウ Port リ テ Star Network society to make, core: polypropylene (165～170 ℃ of fusing points), sheath: ethylene-propylene copolymer (145～147 ℃ of fusing points), core/sheath weight ratio=5/5, fiber number 2.2dtex, the long 51mm of fiber, 90 ℃ of thermal contraction initial temperatures).With this fiber is raw material, behind roller and clearer card formation web of fiber, by knurling rolls (embossing rate 28%, temperature conditions: 145 ℃ in pattern, speed 80m/min), makes it pass through chill roll, and the formation weight per unit area is 20g/m
2The 1st fibrolaminar hot-rolling nonwoven fabric.
(2) the 2nd fibrolaminar manufacturings
As the heat-shrinkable fiber, core-sheath-type composite fibre (the trade name SHW6 that uses ダ イ ワ ボ ウ Port リ テ Star Network society to make, core polyethylene terephthalate (250～255 ℃ of fusing points), sheath: polyethylene (128～130 ℃ of fusing points), core/sheath weight ratio=5/5, fiber number 2.2dtex, the long 51mm of fiber).With this fiber is raw material, and behind roller and clearer card formation web of fiber, by the saturating method heat-treating machine of wind (speed 138m/min connects wind speed 1m/sec, about 10 seconds of processing time), the formation weight per unit area is 12g/m
2The saturating method nonwoven fabric of the 2nd fibrolaminar wind.
(3) the 3rd fibrolaminar manufacturings
Will the saturating method nonwoven fabric of the identical wind that obtains with the above-mentioned the 2nd fibrolaminar manufacturing as the 3rd fibrage.
(4) manufacturing of Stereogram
Above-mentioned the 1st fibrage to the 3 fibrages are overlapping, fit with knurling rolls (145 ℃ of pattern rollers, 135 ℃ of flat-rolls, embossing handle Fig. 2 (c), some footpath 1.5mm, area occupation ratio 7.4%).Then, promptly carry out thermal contraction and handle (going up the about 4.2m of leeward wind speed, 110 ℃～116 ℃ of temperature, about 14 seconds of processing time), set, make its length 70% that is punctured into the preceding size of processing, wide by 70% by machinery with pin stenter.The weight per unit area of the nonwoven fabric of preparation is about 84g/m
2
Comparative example
Except not using the 3rd fibrage to carry out making after card closes its contraction, make Stereogram according to the step identical with embodiment.
[performance evaluation]
The surfacing that each Stereogram of use preparation is used as absorbent commodity is for the continuous sanitary napkin of producing more than 100 with section constitution shown in Figure 3 of each sheet.(weight per unit area is about 250g/m with the hot-rolling (heat embossing processing) of 190 ℃ of temperature each Stereogram to be fixed to absorber 61
2) in (weight per unit area is about 16g/m by cardboard
2) on the surface that constitutes, (the lamination weight per unit area is about 7g/m to use the hot-rolling (heat embossing processing) of 200 ℃ of temperature to be fixed to by lamination the paper of water proofing property polythene strip simultaneously
2, paper quantitatively is 16g/m
2) on the leakage prevention sheet 62 that constitutes.
Sanitary napkin for each manufacturing, to being fixed on the thermo-compressed part 71 on the absorber 61 and being fixed on sealing in the thermo-compressed part 72 on the leakage prevention sheet 62, the visualization pattern part has or not and floats, and the number of sanitary napkin that is judged to be the outward appearance no problem (outward appearance is good) of thermo-compressed part according to following evaluation criterion is shown in table 1 (N=100).
＜metewand 〉
Outward appearance is good: the shape of pressing seal area is such, follows with base material brightly, does not float (projection) fully.
Bad order: the part of the shape of seal area is not distinct on a small quantity, and part or all has floats.
Table 1
| Thermo-compressed part 71 | Thermo-compressed part 72 | |
| Embodiment | ????100 | ????98 |
| Comparative example | ????0 | ????88 |
The good number of sealing outward appearance in 100 sanitary napkins
Can see from the result shown in the table 1, the thermo-compressed excellence of the Stereogram of embodiment (the present invention's product) and absorber and leakage prevention sheet, with other materials etc., the thermo-compressed excellence of the fixation that constitutes of fibrous material particularly.
In contrast to this, the shape part of the seal area of the Stereogram of comparative example is not distinct, or exists part or all to have to float, have problems on product properties.
Stereogram liquor style of the present invention is good, with the thermo-compressed excellence of other materials, and can form when making desirable concavo-convex.
Adopt the fixing means of Stereogram of the present invention, the Stereogram that has used the heat-shrinkable fiber can be engaged in securely on the fixation of fibrous material formation.
Claims (7)
1. Stereogram, its be contain thermal contraction the 1st a fibrolaminar face of heat-shrinkable fiber on lamination based on the non-thermal contraction fiber and contain the 2nd fibrage of hot-melt-bondable fiber, lamination contains the 3rd fibrage of hot-melt-bondable fiber on the 1st fibrolaminar another face, wherein, the 1st fibrage to the 3 fibrages form the heat fusing stick portion with predetermined pattern in above-mentioned Stereogram, above-mentioned heat fusing stick portion extends through the 3rd fibrage from the 2nd fibrage, and the part of the 2nd fibrage beyond above-mentioned heat fusing stick portion is to become convex.
2. Stereogram according to claim 1, wherein, the hot-melt-bondable fiber that contains in the 2nd fibrage and the 3rd fibrage contains the low-melting heat fusing binder resin of fusing point than above-mentioned heat-shrinkable fiber.
3. Stereogram according to claim 1, wherein, the fusing point of the heat fusing binder resin in the fusing point of the heat fusing binder resin in the hot-melt-bondable fiber that contains in the 2nd fibrage and the hot-melt-bondable fiber that the 3rd fibrage contains is identical, and perhaps the fusing point difference of these 2 kinds of heat fusing binder resins is in 20 ℃.
4. Stereogram according to claim 1 wherein, is fixed to the 3rd fibrage side on the fixation that is made of fibrous material as the fixation side by heat embossing processing.
5. Stereogram according to claim 4, wherein, described fixation is the absorber of absorbent commodities such as sanitary napkin, disposable diaper.
6. the fixing means of a Stereogram, wherein, lamination is based on the non-thermal contraction fiber and contain the 2nd fibrage of hot-melt-bondable fiber on the 1st a fibrolaminar face that contains the heat-shrinkable fiber, and the 2nd fibrage side of the Stereogram that the 1st fibrage and the 2nd fibrage is formed the junction surface of predetermined pattern and form is fixed on the fixation that is made of fibrous material as the fixation side
And make the 3rd fibrage that contains the hot-melt-bondable fiber between above-mentioned Stereogram and above-mentioned fixation, by heat embossing processing they are become one.
7. the fixing means of Stereogram according to claim 6, wherein, described fixation is the absorber of physiology with absorbent commodities such as paper handkerchief, disposable diapers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP84397/2002 | 2002-03-25 | ||
| JP2002084397A JP3883460B2 (en) | 2002-03-25 | 2002-03-25 | 3D sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1623018A true CN1623018A (en) | 2005-06-01 |
| CN100347369C CN100347369C (en) | 2007-11-07 |
Family
ID=28449208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028286510A Expired - Fee Related CN100347369C (en) | 2002-03-25 | 2002-12-25 | Three-dimensional sheet |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3883460B2 (en) |
| CN (1) | CN100347369C (en) |
| AU (1) | AU2002360034A1 (en) |
| TW (1) | TWI263715B (en) |
| WO (1) | WO2003080912A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4212526B2 (en) * | 2004-08-05 | 2009-01-21 | 花王株式会社 | Three-dimensional sheet material |
| JP4508885B2 (en) * | 2005-01-20 | 2010-07-21 | 花王株式会社 | Absorbent articles |
| CN101258029B (en) * | 2005-10-03 | 2011-07-06 | 维顺特拉华有限公司 | Nonwoven fabric, articles including nonwoven fabrics, and methods of making nonwoven fabrics |
| JP4749283B2 (en) * | 2006-09-04 | 2011-08-17 | 花王株式会社 | Absorbent article and manufacturing method thereof |
| JP5684046B2 (en) | 2011-05-20 | 2015-03-11 | ユニ・チャーム株式会社 | Absorbent articles |
| JP6172808B2 (en) * | 2013-11-29 | 2017-08-02 | 花王株式会社 | Absorbent article surface sheet |
| CN104988660B (en) * | 2015-06-18 | 2019-01-25 | 厦门延江新材料股份有限公司 | A kind of solid hot-wind nonwoven cloth production method |
| JP6930093B2 (en) * | 2016-11-17 | 2021-09-01 | 王子ホールディングス株式会社 | Absorbent article |
| JP2020157156A (en) * | 2020-07-03 | 2020-10-01 | 花王株式会社 | Disposable pants-type diaper |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2545260B2 (en) * | 1988-02-02 | 1996-10-16 | チッソ株式会社 | Bulky reinforced non-woven fabric |
| JP3096094B2 (en) * | 1991-07-11 | 2000-10-10 | 花王株式会社 | Bulk sheet and method for producing the same |
| JPH0617361A (en) * | 1992-06-30 | 1994-01-25 | Kao Corp | Bulky sheet |
| JP3429859B2 (en) * | 1994-06-10 | 2003-07-28 | 大和紡績株式会社 | Wrinkled nonwoven fabric |
| JP3181195B2 (en) * | 1995-06-22 | 2001-07-03 | 大和紡績株式会社 | Nonwoven fabric and surface fastener female material having irregularities on the surface and method for producing the same |
| JP3131557B2 (en) * | 1995-10-19 | 2001-02-05 | 大和紡績株式会社 | Wrinkled nonwoven fabric and method for producing the same |
| CN2254342Y (en) * | 1996-05-20 | 1997-05-21 | 苏小明 | Anti-side leaking sanitary towel |
| JP3258909B2 (en) * | 1996-06-28 | 2002-02-18 | ユニ・チャーム株式会社 | Disposable body fluid absorbent articles |
| JPH1154478A (en) * | 1997-06-05 | 1999-02-26 | Tokai Rika Co Ltd | Anodization method for silicon board and manufacture of surface acceleration sensor |
-
2002
- 2002-03-25 JP JP2002084397A patent/JP3883460B2/en not_active Expired - Fee Related
- 2002-12-25 WO PCT/JP2002/013538 patent/WO2003080912A1/en active Application Filing
- 2002-12-25 AU AU2002360034A patent/AU2002360034A1/en not_active Abandoned
- 2002-12-25 CN CNB028286510A patent/CN100347369C/en not_active Expired - Fee Related
-
2003
- 2003-01-09 TW TW092100424A patent/TWI263715B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AU2002360034A1 (en) | 2003-10-08 |
| JP2003286642A (en) | 2003-10-10 |
| TW200304513A (en) | 2003-10-01 |
| TWI263715B (en) | 2006-10-11 |
| CN100347369C (en) | 2007-11-07 |
| JP3883460B2 (en) | 2007-02-21 |
| WO2003080912A1 (en) | 2003-10-02 |
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