WO2020218092A1 - 繊維積層体及びその製造方法 - Google Patents

繊維積層体及びその製造方法 Download PDF

Info

Publication number
WO2020218092A1
WO2020218092A1 PCT/JP2020/016464 JP2020016464W WO2020218092A1 WO 2020218092 A1 WO2020218092 A1 WO 2020218092A1 JP 2020016464 W JP2020016464 W JP 2020016464W WO 2020218092 A1 WO2020218092 A1 WO 2020218092A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
ultrafine
fiber layer
ultrafine fiber
layer
Prior art date
Application number
PCT/JP2020/016464
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
正典 友居
章弘 松尾
徹 落合
育久 白石
Original Assignee
クラレクラフレックス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by クラレクラフレックス株式会社 filed Critical クラレクラフレックス株式会社
Priority to KR1020217035976A priority Critical patent/KR20220002346A/ko
Priority to CN202080031603.1A priority patent/CN113766854A/zh
Priority to EP20794108.9A priority patent/EP3960025B1/en
Priority to JP2021516023A priority patent/JP7479356B2/ja
Publication of WO2020218092A1 publication Critical patent/WO2020218092A1/ja

Links

Classifications

    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0208—Tissues; Wipes; Patches
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/08—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 structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • 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
    • B32B5/265—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B32B5/268—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric
    • 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
    • B32B5/265—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B32B5/268—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric
    • B32B5/269—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric characterised by at least one non-woven fabric layer that is a melt-blown fabric next to a non-woven fabric layer that is a spunbonded fabric
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D04H1/4258—Regenerated cellulose series
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4358—Polyurethanes
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • 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
    • D04H1/56—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 in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/10—Details of applicators
    • A45D2200/1009—Applicators comprising a pad, tissue, sponge, or the like
    • A45D2200/1036—Applicators comprising a pad, tissue, sponge, or the like containing a cosmetic substance, e.g. impregnated with liquid or containing a soluble solid substance
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D44/00—Other cosmetic or toiletry articles, e.g. for hairdressers' rooms
    • A45D44/002—Masks for cosmetic treatment of the face
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0207—Elastomeric fibres
    • B32B2262/0215—Thermoplastic elastomer fibers
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • B32B2262/023—Aromatic vinyl resin, e.g. styrenic (co)polymers
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0292—Polyurethane fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B32B2262/144—Non-woven fabric
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/16—Structural features of fibres, filaments or yarns e.g. wrapped, coiled, crimped or covered
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/70—Scrap or recycled material
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/728—Hydrophilic
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/744—Non-slip, anti-slip
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/748—Releasability
    • 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
    • B32B2432/00—Cleaning articles, e.g. mops, wipes
    • 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
    • B32B2535/00—Medical equipment, e.g. bandage, prostheses, catheter
    • 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
    • B32B2555/00—Personal care
    • 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
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins
    • 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
    • B32B2571/00—Protective equipment

Definitions

  • the present invention relates to a fiber laminate having an ultrafine fiber layer and a non-ultrafine fiber layer, and a method for producing the same.
  • a skin care sheet liquid impregnated biological film sheet
  • a liquid such as cosmetics
  • face masks As the material of the sheet, a woven fabric or a non-woven fabric composed of fibers is generally used, and the non-woven fabric is widely used from the viewpoint of cost.
  • a spunlace non-woven fabric mainly composed of cellulosic fibers typified by highly hydrophilic cotton is often used as a non-woven fabric impregnated sheet for cosmetics.
  • the cellulosic fiber spunlace non-woven fabric was not sufficiently irritating to the skin and wearable.
  • Patent Document 1 discloses a non-woven fabric laminate in which a liquid retention layer and an adhesion layer are laminated.
  • Patent Documents 2 and 3 disclose a sheet using a thermoplastic elastomer fiber layer.
  • Patent Document 2 discloses a coating sheet in which a cellulosic fiber layer is integrated with a laminate of a thermoplastic elastomer fiber layer and a short fiber layer by water flow entanglement or needle punching.
  • Patent Document 3 discloses an elastic laminated sheet in which an ultrafine fiber layer containing elastomer long fibers is laminated with a hydrophilic short fiber layer by partial thermocompression bonding.
  • Patent Document 1 when the adhesive layer is a thermoplastic elastomer fiber, the delamination strength between the adhesive layer and the liquid-retaining layer is not sufficient due to the shrinkage of the thermoplastic elastomer fiber, and before using the non-woven fabric laminate. There was a possibility that the adhesion layer and the liquid-retaining layer would peel off when stretched. Further, in the method of Patent Document 2, although the elasticity due to the thermoplastic elastomer layer can be obtained, water flow entanglement or needle for integrating the laminate of the thermoplastic elastomer fiber layer and the short fiber layer and the cellulose fiber layer. Punching is required, and the thermoplastic elastomer layer itself is easily peeled off from the short fiber layer.
  • the problem to be solved by the present invention is to provide a material having high delamination strength, maintaining a liquid retention amount, and having adhesion to the skin and a lift-up effect.
  • the present inventors have (i) expanded and contracted the thermoplastic elastomer fiber when laminating an ultrafine fiber layer made of a thermoplastic elastomer fiber and a non-ultrafine fiber layer. We found that it is difficult to integrate with the non-ultrafine fiber layer due to the nature as a new problem, and in order to improve this problem, (ii) the ultrafine fiber layer made of thermoplastic elastomer fiber and the non-ultrafine fiber In laminating the layers, some of the fibers constituting the ultrafine fiber layer entered the inside of the non-ultrafine fiber layer, and the fibers constituting the ultrafine fiber layer were substantially melted at the interface with the non-ultrafine fiber layer.
  • the delamination strength between the ultrafine fiber layer and the non-ultrafine fiber layer can be improved.
  • the surface is embossed for integration.
  • the ultrafine fiber layer having an ultrafine fiber layer made of thermoplastic elastomer fibers having an average fiber diameter of less than 10 ⁇ m and a non-ultrafine fiber layer made of fibers having an average fiber diameter of 10 to 30 ⁇ m adjacent to the ultrafine fiber layer.
  • the delamination strength between the fiber and the non-ultrafine fiber layer is 0.40 N / 5 cm or more (preferably 0.50 N / 5 cm or more), and the difference in unevenness on the surface of the fiber laminate is 40 with respect to the thickness of the fiber laminate. % Or less fiber laminate.
  • thermoplastic elastomer fiber is a polyurethane-based elastomer fiber or a polystyrene-based elastomer fiber.
  • the basis weight of the ultrafine fiber layer is 50 g / m 2 or less (preferably 20 g / m 2 or less, more preferably 3 to 20 g / m 2 , still more preferably 5 to 20 g / m 2 ).
  • a fiber laminate having an ultrafine fiber layer made of a thermoplastic elastomer fiber has excellent peeling strength between the ultrafine fiber layer and a non-ultrafine fiber layer adjacent to the ultrafine fiber layer, and is further thermoplastic. Since the elastomer fiber and the non-ultrafine fiber layer are integrated, it is possible to provide a fiber laminate capable of giving a lift-up effect because it is excellent in elasticity and adhesion as a whole.
  • the fiber laminate of the present invention has an ultrafine fiber layer made of thermoplastic elastomer fibers having an average fiber diameter of less than 10 ⁇ m and a non-ultrafine fiber layer made of fibers having an average fiber diameter of 10 to 30 ⁇ m adjacent to the ultrafine fiber layer.
  • the delamination strength between the ultrafine fiber layer and the non-ultrafine fiber layer is 0.50 N / 5 cm or more, and the unevenness difference on the surface of the fiber laminate is 40% or less with respect to the thickness of the fiber laminate.
  • the ultrafine fiber layer and the non-ultrafine fiber layer are adjacent to each other, and it is preferable that a part of the thermoplastic elastomer fiber forming the ultrafine fiber layer penetrates into the non-ultrafine fiber layer and acts as an anchor.
  • some of the thermoplastic elastomer fibers have a portion that is deformed according to the shape of the non-ultrafine fiber at the interface with the non-ultrafine fiber layer, and are integrated with the non-ultrafine fiber layer at the fiber level. Is preferably performed.
  • the fiber laminate of the present invention is excellent in integrating the ultrafine fiber layer and the non-ultrafine fiber layer, a predetermined delamination is performed without disposing a binder layer between the ultrafine fiber layer and the non-ultrafine fiber layer. Power can be achieved.
  • the fiber laminate of the present invention may include at least a two-layer structure of the above-mentioned ultrafine fiber layer and non-ultrafine fiber layer.
  • thermoplastic elastomer ultrafine fiber layers are arranged on both sides of the non-ultrafine fiber layer. It may have a three-layer structure.
  • another layer may be arranged in the fiber laminate of the present invention. Examples of the other layer include a film layer, a binder layer, a fiber layer and the like. These layers may be arranged alone or in combination of two or more on at least one surface of the fiber laminate.
  • the fiber laminate of the present invention has an ultrafine fiber layer made of a thermoplastic elastomer and a non-ultrafine fiber layer integrated with the ultrafine fiber layer, the fiber laminate has excellent integrity as a fiber laminate and is a fiber. Even when the laminate is stretched before use, it is possible to prevent the ultrafine fiber layer and the non-ultrafine fiber layer from peeling off. Further, since the fiber laminate of the present invention has a thermoplastic elastomer ultrafine fiber layer and has few irregularities, the fiber laminate (preferably ultrafine) can be attached to the skin while being stretched while being impregnated with a liquid component. The fiber layer) adheres to the skin, the cosmetic liquid held in the non-ultrafine fiber layer is satisfactorily released, and a lift-up effect is given by shrinkage of the sheet.
  • the non-ultrafine fiber layer used in the present invention is composed of fibers having an average fiber diameter of 10 to 30 ⁇ m.
  • the average fiber diameter of the fibers constituting the non-ultrafine fiber layer is preferably 10 to 25 ⁇ m, more preferably 10 to 20 ⁇ m.
  • the fibers constituting the non-ultrafine fiber layer generally have a larger fiber diameter than the fibers constituting the ultrafine fiber layer. If the average fiber diameter of the fibers constituting the non-ultrafine fiber layer is less than 10 ⁇ m, the bulkiness is less likely to occur and the liquid retention property is lowered, and if it exceeds 30 ⁇ m, the web becomes hard and the sheet becomes uncomfortable to use.
  • the average fiber diameter means the number average particle diameter of a single fiber.
  • the form of the non-ultrafine fiber layer is not particularly limited, and examples thereof include woven fabric, knitting, non-woven fabric, and web. Among them, dry non-woven fabrics, spun-bonded non-woven fabrics (for example, spunbonded non-woven fabrics) and the like are preferably used from the viewpoints of productivity, sheet extensibility and handleability.
  • the non-ultrafine fiber layer may be used alone or in combination of two or more.
  • the fiber length of the fibers constituting the dry non-woven fabric may be about 15 to 70 mm, preferably about 20 to 65 mm, more preferably about 30 to 60 mm, and further preferably about 35 to 55 mm. With such a fiber length, it is possible to distinguish a dry non-woven fabric from a wet non-woven fabric (usually, the fiber length is 10 mm or less).
  • a web is formed from a predetermined fiber aggregate by a card method or an airlaid method.
  • the resulting web then binds the fibers together to impart practical strength.
  • bonding method chemical bonding (for example, chemical bond method), thermal bonding (for example, thermal bond method, steam jet method), and mechanical bonding (for example, spunlacing method, needle punching method) can be used.
  • thermal bonding for example, thermal bond method, steam jet method
  • mechanical bonding for example, spunlacing method, needle punching method
  • spunlace method of entanglement by water flow entanglement treatment.
  • the short fibers for example, hydrophobic fibers and hydrophilic fibers may be mixed and opened by carding with a card machine to prepare a non-woven fabric web.
  • This non-woven web can be a parallel web arranged in the traveling direction of the card machine according to the blending ratio of the fibers constituting the web, a cross web in which the parallel web is cross-laid, a random web arranged randomly, or a parallel web and a random web. It may be any of the semi-random webs arranged in the middle of the above, but since the fibers are entangled in the lateral direction and the elongation in the lateral direction is hindered, the conformity to the skin tends to decrease during use. Parallel webs and semi-random webs that can ensure the lateral softness and stretchability of laminated sheets are preferable to random webs and cross webs.
  • non-woven fabric examples include chemical-bonded non-woven fabric, thermal-bonded non-woven fabric, spunlace non-woven fabric, needle punch non-woven fabric, air-laid non-woven fabric, steam jet non-woven fabric, spunbond non-woven fabric and the like.
  • spunlace non-woven fabrics and steam jet non-woven fabrics are preferable from the viewpoint of water retention rate, sheet extensibility and the like.
  • the non-ultrafine fiber layer is a beauty ingredient or a medicinal ingredient (for example, a moisturizing ingredient, a cleansing ingredient, an antiperspirant ingredient, a fragrance ingredient, a whitening ingredient, a blood circulation promoting ingredient, a cooling ingredient, an ultraviolet ray preventing ingredient, a skin itching inhibitor, etc.). It has the wettability necessary for impregnating liquid components including, and has a gap for retaining liquid, and holds it until it covers a predetermined part of the body (for example, face) without dripping even when handling during use. It is preferable that the liquid component has a role of gradually shifting to the direction of the ultrafine fiber layer located on the skin side while being attached or allowed to stand.
  • a beauty ingredient or a medicinal ingredient for example, a moisturizing ingredient, a cleansing ingredient, an antiperspirant ingredient, a fragrance ingredient, a whitening ingredient, a blood circulation promoting ingredient, a cooling ingredient, an ultraviolet ray preventing ingredient, a skin itching inhibitor, etc.
  • the fibers constituting the non-ultrafine fibers can be selected according to the application, but from the viewpoint of liquid retention, it is preferable to contain hydrophilic fibers.
  • hydrophilic fibers when the fiber laminate is impregnated with a liquid component such as cosmetics, the liquid can be easily taken into the laminate, and further, a large amount of liquid component is incorporated into the laminate. Can further suppress dripping during use.
  • a mixture (blended cotton) containing hydrophilic fibers and hydrophobic fibers is more preferable from the viewpoint of excellent balance between liquid retention and liquid release properties.
  • the hydrophilic fiber is not particularly limited as long as it has hydrophilicity, and is regenerated by dissolving synthetic fiber, natural fiber, natural plant fiber, animal protein fiber, etc. once and then chemically treating the fiber. Fiber etc. can be selected.
  • the hydrophilic fiber may have at least a surface made of a hydrophilic resin, for example, a fiber obtained by hydrophilizing the surface of a hydrophobic fiber, a composite fiber having an inside made of a hydrophobic resin, or the like. You may.
  • the synthetic fiber examples include resins having hydrophilic groups (particularly hydroxyl groups) such as hydroxyl groups, carboxyl groups, and sulfonic acid groups in their molecules, for example, polyvinyl alcohol-based resins, polyamide-based resins, and polyester-based resins such as polylactic acid.
  • examples thereof include synthetic fibers composed of a (meth) acrylic copolymer containing a (meth) acrylamide unit. These synthetic fibers can be used alone or in combination of two or more.
  • a hydrophilic resin having a hydroxyl group in the monomer unit is preferable, and a fiber composed of an ethylene-vinyl alcohol copolymer is particularly preferable from the viewpoint of having a hydroxyl group uniformly in the molecule.
  • the content (copolymerization ratio) of the ethylene unit is, for example, 10 to 60 mol%, preferably 20 to 55 mol%, and more preferably about 30 to 50 mol%.
  • the degree of saponification of the ethylene-vinyl alcohol copolymer is, for example, about 90 to 99.99 mol%, preferably 95 to 99.98 mol%, and more preferably about 96 to 99.97 mol%.
  • the viscosity average degree of polymerization is, for example, 200 to 2500, preferably 300 to 2000, and more preferably 400 to 1500.
  • natural fibers examples include cotton (or cotton), silk, linen, silk, and wool. These natural fibers can be used alone or in combination of two or more. Of these, cotton and the like are widely used.
  • regenerated fiber examples include rayon such as viscose rayon, and cellulosic fiber such as acetate, lyocell, cupra, and polynosic. These natural fibers can be used alone or in combination of two or more. Of these, rayon fiber and lyocell fiber are widely used.
  • a method of imparting hydrophilicity to the surface of the fiber is a method of fiberizing the hydrophilic resin together with the fiber-forming resin and covering at least a part of the fiber surface with the hydrophilic resin. It may be.
  • a composite fiber formed by a method of covering the surface of the fiber with a hydrophilic resin is preferable because the hydrophilic performance is not deteriorated even if it is used for a long time. Further, the method of fiberizing the hydrophilic resin together with the fiber-forming resin is preferable because the manufacturing process is shortened and high hydrophilicity can be uniformly imparted.
  • a fiber in which the entire surface of the fiber is covered with a hydrophilic resin in a sheath shape that is, a composite fiber having a core-sheath structure in which the sheath portion is made of a hydrophilic resin is preferable.
  • the core-sheath type composite fiber is not particularly limited as long as the sheath portion is made of a hydrophilic resin, but the core portion retains the fiber shape even when impregnated with a liquid component, and deterioration of hydrophilic performance can be suppressed.
  • the hydrophobic resins for example, polypropylene-based resins, polyester-based resins, and polyamide-based resins are preferable, and polyester-based resins such as polyethylene terephthalate are particularly preferable because they have an excellent balance of heat resistance and fiber-forming property.
  • the hydrophilic resin in the sheath portion a resin constituting the synthetic fiber, particularly a polyvinyl alcohol-based resin such as an ethylene-vinyl alcohol copolymer, is preferable because a bulky and stable non-woven fabric can be produced.
  • cellulosic fibers such as rayon and lyocell are absorbent because water, aqueous solutions, polar solvents, and emulsions of these liquid components such as cosmetics permeate into the fibers. It is particularly preferable because it is good and has high liquid retention.
  • ethylene-vinyl alcohol copolymer fibers (particularly, core-sheath type composite fibers whose sheath is composed of ethylene-vinyl alcohol copolymer) have lower liquid retention performance than cellulosic fibers, but cosmetics and the like. It is particularly preferable that the fiber itself does not absorb the liquid component of the liquid component and can be easily released by pressure or the like.
  • the cellulosic fiber and the ethylene-vinyl alcohol copolymer fiber may be selected according to the viscosity and amount of the liquid component such as cosmetics, and by further mixing the two, the liquid retention property and the release property can be obtained. May be controlled. Further, other fibers may be blended if necessary.
  • Hydrophobic fibers or non-hydrophilic resins that are not so high in polarity and have relatively strong hydrophobicity that make up the non-ultrafine fiber layer are used to obtain the stability of the shape of the non-ultrafine fiber layer.
  • the hydrophobic fiber works in the direction of maintaining the bulk and elasticity of the non-ultrafine fiber layer because there is almost no decrease in Young's modulus of the fiber itself even when the non-ultrafine fiber layer is in a wet state.
  • Such hydrophobic fibers are not particularly limited, but are resins having an official moisture content of less than 2.0% in a standard state (20 ° C., 65% RH), for example, polyethylene and polypropylene generally used for non-woven fabrics.
  • examples thereof include polyolefin resins such as polyethylene terephthalate, polybutylene terephthalate, polyester resins such as polyethylene naphthalate, and fibers composed of polyacrylonitrile resins.
  • These hydrophobic fibers can be used alone or in combination of two or more. Of these, polyester fibers are preferable because of their high versatility and excellent mechanical properties.
  • the cross-sectional shapes of the fibers (hydrophilic fibers and hydrophobic fibers) constituting the non-ultrafine fiber layer are not particularly limited, and are, for example, a round cross section, a deformed cross section (flat, elliptical cross section, etc.), a polygonal cross section, and many. It may have various cross-sectional shapes such as a leaf-shaped cross section (3 to 14 leaf-shaped cross-section), a hollow cross-section, a V-shaped cross-section, a T-shaped cross-section, an H-shaped cross-section, an I-shaped (dogbone-shaped) cross-section, and an array-shaped cross-section. Of these, a round cross section, an elliptical cross section, and the like are preferable.
  • the basis weight of the non-ultrafine fiber layer is, for example, about 20 to 200 g / m 2 , preferably 25 to 150 g / m 2 , and more preferably 30 to 120 g / m 2 (particularly 30 to 100 g / m 2 ). If the basis weight of the non-ultrafine fiber layer is too small, the liquid retention property tends to decrease and the mechanical strength of the obtained fiber laminate tends to decrease. On the other hand, if the basis weight is too large, a large amount of liquid components are taken into the non-ultrafine fibers, and it tends to be difficult to reach the skin.
  • the thickness of the non-ultrafine fiber layer can be selected from the range of about 100 to 3000 ⁇ m, and is, for example, 200 to 2000 ⁇ m, preferably 300 to 1500 ⁇ m, and more preferably 400 to 1200 ⁇ m (particularly 400 to 1000 ⁇ m).
  • the density of the non-ultrafine fiber layer can be selected from the range of about 0.05 to 0.25 g / cm 3 , for example, 0.08 to 0.08. It is about 0.20 g / cm 3 , preferably 0.10 to 0.18 g / cm 3 , more preferably 0.12 to 0.15 g / cm 3 (particularly 0.13 to 0.15 g / cm 3 ).
  • the ultrafine fiber layer used in the present invention is made of a thermoplastic elastomer fiber having an average fiber diameter of less than 10 ⁇ m.
  • a thermoplastic elastomer fiber having elasticity and integrating the ultrafine fiber layer and the non-ultrafine fiber layer of the thermoplastic elastomer fiber the obtained fiber laminate also has excellent elasticity.
  • the number average fiber diameter of the single fiber in the thermoplastic elastomer fiber is preferably 9 ⁇ m or less, and more preferably 8 ⁇ m or less.
  • the average fiber diameter of the thermoplastic elastomer fiber is 10 ⁇ m or more, it may be difficult for the thermoplastic elastomer fiber to enter the inside of the non-ultrafine fiber layer, or the thermoplastic elastomer fiber at the interface between the ultrafine fiber layer and the non-ultrafine fiber layer.
  • the shape change according to the non-ultrafine fiber layer is less likely to occur, which is disadvantageous in improving the delamination strength.
  • the adhesion to the skin becomes insufficient.
  • thermoplastic elastomer fiber is not particularly limited, but is, for example, a fiber made of a resin containing 30% by mass or more of the thermoplastic elastomer, preferably a fiber made of a resin containing 50% by mass or more of the thermoplastic elastomer, and more preferably thermoplastic. It is a fiber made of a resin containing 80% by mass or more of an elastomer, and more preferably a fiber made of only a thermoplastic elastomer resin.
  • thermoplastic elastomer fiber examples include polyurethane-based elastomer fiber, polystyrene-based elastomer fiber, polyolefin-based elastomer fiber, polyester-based elastomer fiber, polyvinyl chloride-based elastomer fiber, and polyamide-based elastomer fiber. From the viewpoint of improving liquid retention and elasticity, polyurethane-based elastomer fibers and polystyrene-based elastomer fibers, particularly polyurethane-based elastomer fibers, are preferable.
  • the polyurethane-based elastomer constituting the polyurethane-based elastomer fiber is composed of a hard segment composed of low molecular weight glycol and diisocyanates and a soft segment composed of high molecular weight diol and diisocyanate.
  • the low molecular weight glycol include C 1-10 diols such as ethylene glycol, 1,4-butanediol and 1,6-hexanediol.
  • the polymer diol include poly (1,4-butylene adipate), poly (1,6-hexane adipate), polycaprolactone, polyethylene glycol, polyprolen glycol, polyoxytetramethylene glycol and the like.
  • the diisocyanate include tolylene diisocyanate, 4,4-diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate and the like.
  • polystyrene-based elastomer constituting the polystyrene-based elastomer fiber examples include SBS (styrene / butadiene / styrene block copolymer), SIS (styrene / isoprene / styrene block copolymer), and SEBS (styrene / ethylene / butadiene / styrene block). Polymer), SEPS (styrene / ethylene / propylene / styrene block copolymer) and the like.
  • the olefin-based elastomer constituting the polyolefin-based elastomer fiber is composed of polyethylene or polypropylene as a hard segment and SEBS or an ethylene / propylene copolymer as a soft segment.
  • the polyester-based elastomer constituting the polyester-based elastomer fiber is composed of saturated polyester as a hard segment and aliphatic polyether or aliphatic polyester as a soft segment.
  • the polyvinyl chloride-based elastomer constituting the polyvinyl chloride-based elastomer fiber is composed of crystalline polyvinyl chloride as a hard segment and amorphous polyvinyl chloride or acrylonitrile as a soft segment.
  • the polyamide-based elastomer that constitutes the polyamide-based elastomer fiber is composed of polyamide as a hard segment and amorphous and low glass transition temperature polyether or polyester as a soft segment.
  • the basis weight of the ultrafine fiber layer is, for example, 50 g / m 2 or less, preferably 20 g / m 2 or less, more preferably 3 to 20 g / m 2 , and even more preferably about 5 to 20 g / m 2. .. If the basis weight of the ultrafine fiber layer is too small, the elasticity tends to decrease and the lift-up effect tends to decrease. On the other hand, if the basis weight is too large, the release property of the liquid component tends to decrease.
  • the thickness of the ultrafine fiber layer can be selected from the range of about 10 to 500 ⁇ m, for example, 30 to 500 ⁇ m, preferably 30 to 200 ⁇ m, and more preferably 35 to 150 ⁇ m (particularly 40 to 100 ⁇ m). If the thickness is too small, the amount of fibers for forming the ultrafine fiber layer is insufficient, and it tends to be difficult to form a uniform ultrafine fiber layer on the skin surface. On the other hand, if the thickness is too large, it tends to be difficult for the liquid component to penetrate from the non-ultrafine fiber layer.
  • the density of the ultrafine fiber layer is in the range of about 0.10 to 0.40 g / cm 3. It can be selected, for example, 0.12 to 0.35 g / cm 3 , preferably 0.15 to 0.30 g / cm 3 , more preferably 0.18 to 0.28 g / cm 3 (particularly 0.20 to 0. It is about 25 g / cm 3 ).
  • the ultrafine fiber layer is thermoplastic in a molten state on the non-ultrafine fiber layer from the viewpoint that an ultrafine fiber layer having an average fiber diameter in the above range can be easily obtained and from the viewpoint of excellent integration with the non-ultrafine fiber layer. It may be an ultrafine fiber layer obtained by spraying an elastomer fiber (direct blown method). In the present specification, the direct-brawn non-woven fabric may also be referred to as a melt-brawn non-woven fabric.
  • thermoplastic elastomer fiber in the molten state is sprayed on the non-ultrafine fiber layer from the viewpoint of ease of molding and reducing the influence of post-processing on each fiber layer ( (Direct blown method) It has a step of forming the ultrafine fiber layer.
  • the thermoplastic elastomer fiber is sprayed on the non-ultrafine fiber sheet forming the non-ultrafine fiber layer in a deformable state. Therefore, a part of the thermoplastic elastomer fiber that can be deformed when it comes into contact with the fiber assembly constituting the non-ultrafine fiber sheet utilizes its deformability and the momentum when it is sprayed to be inside the fiber assembly. Can get in. Further, the deformable thermoplastic elastomer fiber is on the surface of the non-ultrafine fiber layer at the interface with the non-ultrafine fiber layer even if it does not enter the inside of the non-ultrafine fiber layer when it comes into contact with the non-ultrafine fiber layer. It can be deformed along the fiber shape.
  • the melt blown method can be mentioned as a preferable method.
  • the fiber laminate can be continuously produced with the layers sufficiently adhered.
  • other laminating methods may be combined as long as the fiber laminate of the present invention can be obtained.
  • other laminating methods include the air-through method, the steam jet method, the calendar method, and the spunlace method.
  • the spinning temperature described later and the collection distance which is the distance from the spinning position of the molten thermoplastic elastomer fiber to the non-ultrafine fiber. It is especially important to adjust.
  • the suitable collection distance for exerting the effect of the present invention depends on the spinning conditions such as the spinning temperature and the discharge amount, the type of elastomer resin used, the fiber diameter of the ultrafine fibers, the environmental temperature and the like.
  • the spinning temperature in the melt blown method is preferably 240 to 270 ° C, more preferably 240 to 265 ° C, still more preferably 240 to 260 ° C. Is.
  • the spinning temperature in the melt blown method is preferably 200 to 350 ° C, more preferably 220 to 320 ° C, and further preferably about 240 to 300 ° C. Is.
  • the collection distance which is the distance from the spinning position of the molten thermoplastic elastomer fiber to the non-ultrafine fiber in the melt blown method, can be appropriately changed according to the type of resin constituting the thermoplastic elastomer fiber and the spinning temperature. However, it is preferably about 8 to 20 cm, more preferably 10 to 18 cm, and even more preferably about 10 to 15 cm. This collection distance is shorter than the collection distance in the usual melt blown method.
  • thermoplastic elastomer discharged from the spinning nozzle to the non-ultrafine fiber layer by directly blowing directly onto the non-ultrafine fiber layer at a shorter collection distance than usual utilizes the momentum at the time of ejection.
  • a part of the thermoplastic elastomer fiber can physically enter the inside of the non-ultrafine fiber layer.
  • the ultrafine fibrous thermoplastic elastomer comes into contact in a softened state, so that it is possible to deform its own shape according to the shape of the non-ultrafine fiber.
  • the peel resistance between the ultrafine fiber layer and the non-ultrafine fiber layer can be improved.
  • the adhesive strength is improved, but since the fiber diameter of the ultrafine fiber layer is small, the thermoplastic elastomer fibers are easily fused to each other by heat, and the film is easily formed. The release property and adhesion of the components tend to decrease.
  • the collection distance is too large, the thermoplastic elastomer fibers are cooled before being collected, so that the fibers are solidified and tend not to have sufficient delamination strength.
  • the spacing between the spinning holes in the melt blown method is, for example, 100 to 4000 holes / m, preferably 500 to 3000 holes / m, and more preferably about 1000 to 2500 holes / m.
  • the single-hole discharge amount is, for example, 0.01 to 1 g / hole / minute, preferably 0.05 to 0.5 g / hole / minute, and more preferably 0.1 to 0.3 g / hole / minute.
  • the air pressure of the high temperature air in the melt blown method can be selected from the range of about 0.01 to 1 MPa, for example, 0.05 to 0.8 MPa, preferably 0.1 to 0.6 MPa, and more preferably 0.2 to 0 MPa. It is about 5 MPa.
  • the air temperature is, for example, a temperature near the spinning temperature, for example, a temperature 0 to 50 ° C. higher than the spinning temperature, preferably a temperature 3 to 30 ° C. higher than the spinning temperature, and more preferably a temperature 5 to 20 ° C. higher than the spinning temperature. Is preferable.
  • the conveyor speed in the melt blown method is, for example, 1 to 200 m / min, preferably 5 to 100 m / min, and more preferably about 10 to 80 m / min.
  • the delamination strength of the fiber laminate is 0.40 N / 5 cm or more, preferably 0.50 N / 5 cm or more. If the delamination strength is less than 0.40 N / 5 cm, it will peel off when stretched before use. In addition, the ultrafine fiber layer and the non-ultrafine fiber layer may peel off during use, and the liquid component may not be sufficiently released to the skin side.
  • the upper limit of the delamination strength is not particularly limited, but when the fiber layers are laminated by a general method, if it exceeds 5 N / 5 cm, one of the fiber layers is often broken, and accurate numerical measurement is performed.
  • the upper limit of the delamination strength is preferably 5N / 5cm or less.
  • the difference in unevenness on the surface of the fiber laminate is small. More specifically, it is important that the ratio of the unevenness difference to the total thickness of the fiber laminate is 40% or less, preferably 35% or less, and more preferably 30% or less. If the difference in unevenness exceeds 40%, the number of adhesion points with the skin is reduced, so that the adhesion is reduced and the lift-up effect cannot be sufficiently obtained.
  • the lower the unevenness difference, the better, and the lower limit is not particularly limited, but for example, it may be 1% or more, preferably 3% or more, more preferably 5% or more, and more preferably about 10%.
  • the thickness of the fiber laminate can be selected from the range of about 0.1 to 4 mm, for example, 0.15 to 3 mm, preferably 0.2 to 2 mm, more preferably 0.25 to 1.5 mm (particularly 0.3). ⁇ 1 mm). If the thickness is too small, the liquid retention property tends to decrease. On the other hand, if the thickness becomes too large, the amount of liquid retained becomes too large, which tends to make the product heavier and reduce the adhesion.
  • the basis weight of the fiber laminate may be, for example, about 21 to 250 g / m 2 , preferably 25 to 200 g / m 2 , and more preferably 30 to 150 g / m 2 (particularly 30 to 130 g / m 2 ).
  • the breaking strength of the fiber laminate is, for example, 120 to 220 N / 5 cm, preferably 130 to 200 N / 5 cm, and more preferably 140 to 190 N / 5 cm in the longitudinal direction (MD direction) during the production of the fiber laminate. There may be. Further, in the lateral direction (CD direction) at the time of producing the fiber laminate, for example, it may be about 18 to 45 N / 5 cm, preferably 19 to 40 N / 5 cm, and more preferably about 20 to 38 N / 5 cm.
  • the elongation at break of the fiber laminate is, for example, about 15 to 40%, preferably 18 to 35%, and more preferably about 20 to 33% in the longitudinal direction (MD direction) during the production of the fiber laminate. May be good. Further, in the lateral direction (CD direction) at the time of producing the fiber laminate, it may be, for example, 140 to 180%, preferably 143 to 175%, and more preferably about 145 to 170%.
  • the water retention rate of the fiber laminate of the present invention is preferably 700 to 1500% by mass, more preferably 700 to 1300% by mass, and further preferably about 710 to 1000% by mass. If the water retention rate is too low, the liquid component cannot be sufficiently retained, causing dripping, and the usage time becomes short, so that sufficient effects cannot be exhibited. On the other hand, if the water retention rate is too high, the release property of the liquid component tends to decrease.
  • the fiber laminate of the present invention has excellent adhesion to the skin.
  • a cosmetic (lotion) (“Freschel Essence Lotion NA” manufactured by Kanebo Cosmetics Co., Ltd.) is 700% by mass based on the sheet mass.
  • the frictional force (adhesion) measured by impregnating with reference to ASTM-D1894 may be, for example, 0.5N to 3.0N, preferably 0.6 to 2.7N, and more preferably 0.6N to 2.7N. It is about 0.7 to 2.5 N, more preferably about 0.8 to 2.0 N.
  • the fiber laminate of the present invention has excellent adhesion to the skin and can maintain the integrity between layers even when the amount of liquid impregnation is extremely small, and is a cosmetic (lotion).
  • Cosmetic (lotion) manufactured by Kanebo Cosmetics Co., Ltd.
  • the 25% elongation recovery rate of the fiber laminate when wet is preferably 60% or more, more preferably 62% or more, still more preferably about 63% or more.
  • the upper limit of the elongation recovery rate is not particularly limited, and the higher it is, the better. For example, it is 95% or less, and may be about 90% or less.
  • the fiber laminate of the present invention can be used for various purposes in which the elasticity of the thermoplastic elastomer fiber can be utilized, and may be used as it is in a dry state.
  • the fiber laminate of the present invention may be used for interpersonal applications such as surface materials such as napkins and diapers, diaper liners, and sweat absorbing sheets (for example,).
  • Sweat pads, especially armpit sweat pads can also be used for body fluid absorption sheets (or skin cleaning sheets), and for non-personal use, as dew condensation absorption sheets, liquid absorption sheets and liquid adsorption mats. Can also be used as.
  • the fiber laminate of the present invention may be used as a liquid impregnated sheet in a wet state by applying a liquid component.
  • the liquid-impregnated sheet can be used for general purposes such as wet tissue, but the fiber laminate of the present invention has excellent liquid retention in addition to adhesion and fit to the skin, so that it can be used for interpersonal use.
  • liquid impregnated sheet impregnated with liquid components such as beauty ingredients and medicinal ingredients
  • applications that adhere to the skin such as face masks, makeup removal sheets or cleansing sheets, body cleaning sheets (sweat wipe sheets, oil removal sheets, etc.)
  • various skin care sheets such as a cooling sheet, a medicated or therapeutic sheet (itch suppressing sheet, adhesive plaster, wet cloth, etc.).
  • itch suppressing sheet itch suppressing sheet, adhesive plaster, wet cloth, etc.
  • non-personal applications it can be suitably used for applications other than the human body, such as objective wipers impregnated with water or chemicals, agricultural sheets, and biological medium pads.
  • the fiber structure was observed using a scanning electron microscope. The diameters of 100 fibers randomly selected from electron micrographs were measured, and the number average fiber diameters of single fibers were determined and used as the average fiber diameters of the fibers.
  • breaking strength and breaking elongation were measured with reference to JIS L 1913. That is, test pieces having a width of 50 mm and a length of 200 mm were collected in the vertical direction (MD direction) and the horizontal direction (CD direction) at the time of manufacturing the fiber laminate. After setting the width of the gripping part to 10 cm, fix the end of each test piece with the gripping part, pull it at a speed of 300 mm / min until it breaks, and set the average value of the test force at the time of breaking as the breaking strength and move it. The percentage of the value obtained by dividing the distance obtained by the width of the gripped portion by 10 cm was defined as the elongation.
  • the peeling strength was measured with reference to JIS L 1085 using a precision universal testing machine (“Autograph AGS-D type” manufactured by Shimadzu Corporation). That is, a test piece having a width of 50 mm and a length of 200 mm with respect to the vertical direction at the time of manufacturing the non-woven fabric is collected, and the kraft tape is adhered to the ultrafine fiber layer side. After that, the layers between the ultrafine fiber layer and the non-ultrafine fiber layer at the end of the test piece are peeled off. After setting the width of the gripped portion of each of the peeled ends to 5 cm, it was fixed at the gripped portion and pulled at a speed of 200 mm / min, and the average value of the test force at that time was taken as the peeling strength.
  • the frictional force was measured using a precision universal testing machine (“Autograph AGS-D type” manufactured by Shimadzu Corporation) with reference to ASTM-D1894.
  • a sample of the fiber laminate is cut out in the MD direction (longitudinal direction and flow direction during fiber laminate production) 4.0 cm ⁇ CD direction (width direction during fiber laminate production) 11.0 cm, and the gripped portion is cut in the CD direction.
  • the ground contact portion was set to 1 cm and 10 cm.
  • a sample impregnated with the cosmetic was taken out and diffused evenly while observing with the fingertips of both hands, and the cosmetic was adjusted to have two kinds of mass% as shown below.
  • a test was conducted in which the gripped portion of the sample impregnated with a specific amount of cosmetic was pulled in the direction of gripping with a clip.
  • an acrylic plate was fixed on a table for measuring the frictional force, and the sample was placed in the center with the skin side used side down. Further, after protecting the sample with a PE film, a weight is placed on the sample, a load of 10 g / cm 2 is evenly applied to a range of MD 4.0 cm ⁇ CD 10.0 cm for 10 seconds, and then the weight and the PE film are removed and the sample is removed from the acrylic plate. Was brought into close contact with.
  • adhesion was measured under the following two conditions. (1) 300% by mass of cosmetics was impregnated with respect to the mass of the sample, and the value of adhesion under the condition imitating the environment in the latter half of the use of the face mask was obtained. (2) 700% by mass of cosmetic was impregnated with respect to the mass of the sample, and the value of adhesion under the condition imitating the environment immediately after the start of using the face mask was obtained.
  • the cosmetic is an aqueous cosmetic containing water and a hydrophilic material as main components, and is water, glycerin, ethanol, dipropylene glycol, maltol, PEG-75, raffinose, phenyltrimethicone, carbomer K, polysorbate 20. , Perfluoroalkyldimethicone polyol, 1,3-butylene glycol, cucumber extract, PEG-60 hydrogenated castor oil, xanthan gum, aloe pera extract-1, edetate, phenoxyethanol, and paraben.
  • a semi-random card web having a grain size of 55 g / m 2 was prepared by a conventional method, and the card web was prepared by a conventional method with an aperture ratio of 25%. It is placed on a punching drum support with a hole diameter of 0.3 mm and continuously transferred in the longitudinal direction at a speed of 50 m / min, and at the same time, a high-pressure water stream is injected from above to perform entanglement processing, and the entangled fiber web ( Non-woven fabric) was manufactured.
  • two nozzles having an orifice with a hole diameter of 0.10 mm provided at an interval of 0.6 mm along the width direction of the web are used (distance between adjacent nozzles is 20 cm), and the first row.
  • the water pressure of the high-pressure water stream jetted from the nozzle was 3.0 MPa
  • the water pressure of the high-pressure water stream jetted from the nozzles in the second row was 4.0 MPa.
  • using two nozzles in which orifices having a hole diameter of 0.10 mm were provided at intervals of 0.6 mm along the width direction of the web both were performed under the condition of a water pressure of 5 MPa in a high-pressure water stream. Further, it was dried at 120 ° C. to obtain a spunlace nonwoven fabric having a thickness of 0.40 mm and a basis weight of about 51 to 55 g / m 2 as a non-ultrafine fiber layer.
  • Example 1 Using polyurethane resin, using general melt blown manufacturing equipment, spinning temperature 243 ° C, air temperature 253 ° C, air pressure 0.4 MPa, single hole discharge amount 0.2 g / min, number of spinning holes 400 in the base Melt blown spinning is performed individually (arranged in one row), and the non-ultrafine fiber layer is passed through the rotating net conveyor to collect the polyurethane fibers at a collection distance of 10 cm.
  • the average fiber diameter of the polyurethane fibers is 5.51 ⁇ m and the grain size is 5 g / g.
  • the microfiber layer of m 2 was produced in the non-ultrafine fiber layer, was wound fiber laminate thickness 0.42mm and basis weight 58.0 g / m 2.
  • the delamination strength of the obtained fiber laminate was 1.44 N / 5 cm, the 25% elongation recovery rate when wet was 63.4%, and it was evaluated that a good lift-up effect could be obtained without peeling during use. did. Further, when the obtained fiber laminate was impregnated with a cosmetic and the adhesion was measured, the adhesion at the time of 700% by mass impregnation was 0.89 N, which was high adhesion. Further, the adhesion when impregnated with 300% by mass was 1.66N, which was higher than that when impregnated with 700% by mass.
  • Example 2 The average fiber diameter of the polyurethane fibers was 5.46 ⁇ m, the thickness was 0.46 mm, and the basis weight was 65.6 g / m 2 by the same method as in Example 1 except that the basis weight of the ultrafine fiber layer was 10 g / m 2 .
  • a fiber laminate was obtained.
  • the delamination strength of the obtained fiber laminate was 1.06 N / 5 cm, the 25% elongation recovery rate when wet was 72.2%, and it was evaluated that a good lift-up effect could be obtained without peeling during use. did.
  • the adhesion when impregnated with 700% by mass was 0.63N, which was sufficient adhesion.
  • the adhesion when impregnated with 300% by mass was 1.29N, which was higher than that when impregnated with 700% by mass.
  • Example 3 The average fiber diameter of the polyurethane fibers was 4.93 ⁇ m, the thickness was 0.45 mm, and the basis weight was 65.2 g / by the same method as in Example 2 except that the collection distance when producing the ultrafine fiber layer was set to 15 cm. A fiber laminate of m 2 was obtained. The delamination strength of the obtained fiber laminate was 0.50 N / 5 cm, the 25% elongation recovery rate when wet was 75.6%, and it was evaluated that a good lift-up effect could be obtained without peeling during use. did. Further, when the obtained fiber laminate was impregnated with a cosmetic and the adhesion was measured, the adhesion when impregnated with 700% by mass was 0.67N, which was sufficient adhesion. Further, the adhesion when impregnated with 300% by mass was 1.18N, which was higher than that when impregnated with 700% by mass.
  • Example 4 The average fiber diameter of the polyurethane fiber was 1.99 ⁇ m, the thickness was 0.45 mm, and the grain size was 64.7 g / by the same method as in Example 2 except that the spinning temperature at the time of producing the ultrafine fiber layer was set to 260 ° C. A fiber laminate of m 2 was obtained. The delamination strength of the obtained fiber laminate was 0.95 N / 5 cm, the 25% elongation recovery rate when wet was 73.6%, and it was evaluated that good lift-up effect could be obtained without peeling during use. did.
  • the adhesion at the time of 700% by mass impregnation was 1.09 N, which was good adhesion.
  • the adhesion when impregnated with 300% by mass was 1.37N, which was higher than that when impregnated with 700% by mass.
  • Example 5 Using a styrene-based elastomer and using a general melt blown manufacturing facility, spinning temperature 250 ° C, air temperature 260 ° C, air pressure 0.4 MPa, single hole discharge amount 0.2 g / min, number of spinning holes in the base Melt blown spinning was performed with 400 pieces (arranged in one row), and the non-ultrafine fiber layer was passed through the rotating net conveyor to collect the fibers at a collection distance of 10 cm. The average fiber diameter of the styrene-based elastomer fibers was 6.61 ⁇ m.
  • An ultrafine fiber layer having a grain size of 10 g / m 2 was produced on the non-ultrafine fiber layer, and a fiber laminate having a thickness of 0.46 mm and a grain size of 61.2 g / m 2 was wound up.
  • the delamination strength of the obtained fiber laminate was 0.50 N / 5 cm, the 25% elongation recovery rate when wet was 48.8%, and although it was inferior to other examples in terms of lift-up, cosmetics.
  • the adhesion when impregnated with 700% by mass was 1.00 N, did not peel off during use, and had extremely high adhesion. Further, the adhesion when impregnated with 300% by mass was 1.20 N, which was higher than that when impregnated with 700% by mass.
  • a semi-random card web having a grain size of 60 g / m 2 was prepared by a conventional method, and the card web had an aperture ratio of 25. %, Placed on a punching drum support with a hole diameter of 0.3 mm and continuously transferred in the longitudinal direction at a speed of 50 m / min, and at the same time, a high-pressure water stream is sprayed from above to perform entanglement processing to perform non-ultrafine fibers.
  • the layer was manufactured.
  • two nozzles having an orifice with a hole diameter of 0.10 mm provided at an interval of 0.6 mm along the width direction of the web are used (distance between adjacent nozzles is 20 cm), and the first row.
  • the water pressure of the high-pressure water stream jetted from the nozzle was 3.0 MPa
  • the water pressure of the high-pressure water stream jetted from the nozzles in the second row was 4.0 MPa.
  • the previously produced ultrafine fiber layer having a grain size of 5 g / m 2 is unwound from the unwinding device, superposed on the non-woven fiber layer, and placed on an entirely flat support having a finer mesh for continuous transfer.
  • a high-pressure water stream was injected to perform entanglement treatment, and the fibers constituting the two non-woven fabrics were entangled to form a composite.
  • This entanglement treatment was performed using two nozzles in which orifices having a hole diameter of 0.10 mm were provided at intervals of 0.6 mm along the width direction of the web, and both were performed under the condition of a high-pressure water flow with a water pressure of 5 MPa. .. Further, it was dried at 130 ° C. to obtain a fiber laminate having a thickness of 0.40 mm and a basis weight of 64.0 g / m 2 .
  • the delamination strength of the obtained fiber laminate was 0.99 N / 5 cm, and a sufficient peeling force was obtained.
  • the thermoplastic elastomer fiber was not used, the 25% elongation recovery rate at the time of wetting was 38. It was 8%, and the lift-up effect was insufficient.
  • the adhesion when impregnated with 300% by mass of the cosmetic liquid was also inferior to that of the examples.
  • Comparative Example 2 The ultrafine fiber layer and the non-ultrafine fiber layer produced by the method of Comparative Example 1 were laminated by partial thermocompression bonding using a thermocompression bonding roll having a pressure bonding area of 3.3%, and had a thickness of 0.42 mm and a basis weight of 57.8 g. A fiber laminate of / m 2 was obtained. The delamination strength of the obtained fiber laminate is as low as 0.22 N / 5 cm, the 25% elongation recovery rate when wet is 41.6%, the lift-up effect is insufficient, and the cosmetic liquid is impregnated with 300% by mass. It peeled off when the adhesion was measured.
  • the adhesion when impregnated with 700% by mass is also inferior to that of the examples. Further, since no lamination other than embossing was performed, the breaking strength of the fiber laminate was less than half that of the examples in both the vertical direction and the horizontal direction.
  • the ultrafine fiber layer was produced on the non-ultrafine fiber layer in the same manner as in Example 2 except that the collection distance when producing the ultrafine fiber layer was 25 cm, and a thermocompression embossed roll having a pressure bonding area of 3.3% was further formed.
  • the polyurethane fibers were partially thermocompression bonded using the above to produce a fiber laminate having an average fiber diameter of 5.44 ⁇ m, a thickness of 0.38 mm, and a grain size of 66.3 g / m 2 .
  • the delamination strength of the obtained fiber laminate was 1.57 N / 5 cm, and the layers were firmly adhered to each other, but the adhesion when impregnated with 700% by mass of the cosmetic liquid was 0.37 N, and the adhesion was good. Was insufficient, resulting in a fiber laminate that could peel off during use.
  • the adhesion when impregnated with 700% by mass is also inferior to that of the examples.
  • even if direct blown is performed the effect of direct blown cannot be obtained because the collection distance is long, and even if embossing is performed, the breaking strength of the fiber laminate is vertical and horizontal. The values were lower than in the examples in both directions.
  • the average fiber diameter of the polyurethane fibers was 5.44 ⁇ m, the thickness was 0.44 mm, and the basis weight was 65.8 g / by the same method as in Example 2 except that the collection distance when producing the ultrafine fiber layer was set to 25 cm.
  • a fiber laminate of m 2 was obtained.
  • the delamination strength of the obtained fiber laminate was as low as 0.09 N / 5 cm, and it was peeled off when 300% by mass of a cosmetic solution was impregnated and the adhesion was measured.
  • the fiber laminate of the present invention provides a lift-up effect because it has excellent liquid retention and peeling strength, and also has excellent elasticity and adhesion, while ensuring sufficient mechanical strength and elongation as a fiber laminate.
  • surface materials such as napkins and diapers, body fluid absorbing sheets such as diaper liners, skin cleaning sheets such as wet tissues, face masks, etc. It can be suitably used as a liquid impregnated sheet or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Birds (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Physical Education & Sports Medicine (AREA)
PCT/JP2020/016464 2019-04-26 2020-04-14 繊維積層体及びその製造方法 WO2020218092A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020217035976A KR20220002346A (ko) 2019-04-26 2020-04-14 섬유 적층체 및 그 제조 방법
CN202080031603.1A CN113766854A (zh) 2019-04-26 2020-04-14 纤维层叠体及其制造方法
EP20794108.9A EP3960025B1 (en) 2019-04-26 2020-04-14 Fiber layered body and production method therefor
JP2021516023A JP7479356B2 (ja) 2019-04-26 2020-04-14 繊維積層体及びその製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019084945 2019-04-26
JP2019-084945 2019-04-26

Publications (1)

Publication Number Publication Date
WO2020218092A1 true WO2020218092A1 (ja) 2020-10-29

Family

ID=72941889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/016464 WO2020218092A1 (ja) 2019-04-26 2020-04-14 繊維積層体及びその製造方法

Country Status (6)

Country Link
EP (1) EP3960025B1 (US07122603-20061017-C00118.png)
JP (1) JP7479356B2 (US07122603-20061017-C00118.png)
KR (1) KR20220002346A (US07122603-20061017-C00118.png)
CN (1) CN113766854A (US07122603-20061017-C00118.png)
TW (1) TW202103946A (US07122603-20061017-C00118.png)
WO (1) WO2020218092A1 (US07122603-20061017-C00118.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023190074A1 (ja) * 2022-03-29 2023-10-05 三井化学株式会社 メルトブローン不織布及び衛生材料
US12005691B2 (en) 2021-10-22 2024-06-11 Nike, Inc. Recyclable, asymmetrical-faced composite nonwoven textile having varied denier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3199781A1 (en) * 2020-10-30 2022-05-05 Nike Innovate C.V. Asymmetric faced composite nonwoven textile and methods of manufacturing the same

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602273A (ja) * 1983-06-20 1985-01-08 カネボウ株式会社 伸縮性中綿材料
JPH0226973A (ja) * 1988-03-18 1990-01-29 Kimberly Clark Corp 水圧撚り不織弾性ウエブ及び該ウエブを形成する方法
JPH0760886A (ja) * 1990-03-30 1995-03-07 Kimberly Clark Corp テキスタイル・ウェブと不織弾性ウェブとからなる平らな積層材料
JP2002356958A (ja) * 2001-05-31 2002-12-13 Kuraray Co Ltd ハウスラップ用または屋根下地用の積層シート
JP2003082568A (ja) * 2001-09-06 2003-03-19 Toyobo Co Ltd 成形性に優れた吸音材
JP2009121014A (ja) * 2007-10-23 2009-06-04 Daiwabo Co Ltd 積層不織布およびその製造方法
JP2009256856A (ja) 2008-03-19 2009-11-05 Chisso Corp 伸縮性積層シート
WO2010064710A1 (ja) * 2008-12-05 2010-06-10 ダイワボウホールディングス株式会社 化粧料含浸用皮膚被覆シート及びその製造方法、並びにこれを用いたフェイスマスク
JP2010155454A (ja) 2008-12-05 2010-07-15 Daiwabo Holdings Co Ltd 化粧料含浸用皮膚被覆シート及びその製造方法、並びにこれを用いたフェイスマスク
WO2011004834A1 (ja) 2009-07-07 2011-01-13 クラレクラフレックス株式会社 積層シート及びその製造方法
JP2013128743A (ja) * 2011-11-25 2013-07-04 Jnc Corp 化粧用マスク
US20140332476A1 (en) * 2012-01-04 2014-11-13 North Carolina State University Elastomeric depth filter
CN207493504U (zh) * 2017-09-29 2018-06-15 唐山伟德船用设备有限公司 一种新型船舶柴油机废气脱硫洗涤装置
WO2018143430A1 (ja) * 2017-02-03 2018-08-09 Jnc株式会社 極細繊維を含む積層吸音材
KR101902546B1 (ko) * 2017-08-30 2018-09-28 김대원 마스크팩용 복합부직포시트의 제조방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5498013B2 (ja) 2008-11-28 2014-05-21 旭化成せんい株式会社 ケーブル被覆用絶縁体
EP2401147B1 (en) * 2009-02-27 2015-06-24 ExxonMobil Chemical Patents Inc. Biaxially elastic nonwoven laminates having inelastic zones
KR20140143847A (ko) * 2009-10-02 2014-12-17 엑손모빌 케미칼 패턴츠 인코포레이티드 다층 용융취입 복합체 및 이의 제조 방법
JP6730677B2 (ja) 2016-11-21 2020-07-29 Jnc株式会社 積層不織布シート

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602273A (ja) * 1983-06-20 1985-01-08 カネボウ株式会社 伸縮性中綿材料
JPH0226973A (ja) * 1988-03-18 1990-01-29 Kimberly Clark Corp 水圧撚り不織弾性ウエブ及び該ウエブを形成する方法
JPH0760886A (ja) * 1990-03-30 1995-03-07 Kimberly Clark Corp テキスタイル・ウェブと不織弾性ウェブとからなる平らな積層材料
JP2002356958A (ja) * 2001-05-31 2002-12-13 Kuraray Co Ltd ハウスラップ用または屋根下地用の積層シート
JP2003082568A (ja) * 2001-09-06 2003-03-19 Toyobo Co Ltd 成形性に優れた吸音材
JP2009121014A (ja) * 2007-10-23 2009-06-04 Daiwabo Co Ltd 積層不織布およびその製造方法
JP2009256856A (ja) 2008-03-19 2009-11-05 Chisso Corp 伸縮性積層シート
WO2010064710A1 (ja) * 2008-12-05 2010-06-10 ダイワボウホールディングス株式会社 化粧料含浸用皮膚被覆シート及びその製造方法、並びにこれを用いたフェイスマスク
JP2010155454A (ja) 2008-12-05 2010-07-15 Daiwabo Holdings Co Ltd 化粧料含浸用皮膚被覆シート及びその製造方法、並びにこれを用いたフェイスマスク
WO2011004834A1 (ja) 2009-07-07 2011-01-13 クラレクラフレックス株式会社 積層シート及びその製造方法
JP2013128743A (ja) * 2011-11-25 2013-07-04 Jnc Corp 化粧用マスク
US20140332476A1 (en) * 2012-01-04 2014-11-13 North Carolina State University Elastomeric depth filter
WO2018143430A1 (ja) * 2017-02-03 2018-08-09 Jnc株式会社 極細繊維を含む積層吸音材
KR101902546B1 (ko) * 2017-08-30 2018-09-28 김대원 마스크팩용 복합부직포시트의 제조방법
CN207493504U (zh) * 2017-09-29 2018-06-15 唐山伟德船用设备有限公司 一种新型船舶柴油机废气脱硫洗涤装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3960025A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12005691B2 (en) 2021-10-22 2024-06-11 Nike, Inc. Recyclable, asymmetrical-faced composite nonwoven textile having varied denier
WO2023190074A1 (ja) * 2022-03-29 2023-10-05 三井化学株式会社 メルトブローン不織布及び衛生材料

Also Published As

Publication number Publication date
JP7479356B2 (ja) 2024-05-08
KR20220002346A (ko) 2022-01-06
EP3960025A1 (en) 2022-03-02
JPWO2020218092A1 (US07122603-20061017-C00118.png) 2020-10-29
TW202103946A (zh) 2021-02-01
EP3960025B1 (en) 2024-02-21
CN113766854A (zh) 2021-12-07
EP3960025A4 (en) 2023-01-04

Similar Documents

Publication Publication Date Title
JP5562955B2 (ja) 積層シート及びその製造方法
JP6158178B2 (ja) 保液シート及びフェイスマスク
KR102213970B1 (ko) 보액 시트 및 페이스 마스크
KR101906689B1 (ko) 항균성 부직포 시트, 함액 시트, 및 페이스 마스크
JP5643145B2 (ja) 積層シート及びその製造方法
JP5324403B2 (ja) 化粧料含浸用皮膚被覆シート及びその製造方法、並びにこれを用いたフェイスマスク
WO2020218092A1 (ja) 繊維積層体及びその製造方法
JP5272130B2 (ja) 化粧料含浸用皮膚被覆シート及びその製造方法、並びにこれを用いたフェイスマスク
JPWO2020218092A5 (US07122603-20061017-C00118.png)
JP2021023669A (ja) 液体含浸皮膚被覆シート用不織布及びその製造方法、液体含浸皮膚被覆シート、並びにフェイスマスク
TW202203809A (zh) 不織布及其製造方法、和液體含浸薄片及擦拭薄片

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20794108

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021516023

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2020794108

Country of ref document: EP

Effective date: 20211126