JP5717769B2 - スパンボンド不織布 - Google Patents
スパンボンド不織布 Download PDFInfo
- Publication number
- JP5717769B2 JP5717769B2 JP2012557998A JP2012557998A JP5717769B2 JP 5717769 B2 JP5717769 B2 JP 5717769B2 JP 2012557998 A JP2012557998 A JP 2012557998A JP 2012557998 A JP2012557998 A JP 2012557998A JP 5717769 B2 JP5717769 B2 JP 5717769B2
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- hollow
- fibers
- spunbonded
- fiber diameter
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims description 222
- 239000000835 fiber Substances 0.000 claims description 111
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- 239000004750 melt-blown nonwoven Substances 0.000 claims description 34
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 20
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 20
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- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 4
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 4
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- ROGIWVXWXZRRMZ-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1 ROGIWVXWXZRRMZ-UHFFFAOYSA-N 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 3
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- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 3
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- 239000000203 mixture Substances 0.000 description 3
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 3
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
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- 239000000806 elastomer Substances 0.000 description 2
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- 238000010030 laminating Methods 0.000 description 2
- 239000002649 leather substitute Substances 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
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- 238000003825 pressing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- GVNWZKBFMFUVNX-UHFFFAOYSA-N Adipamide Chemical compound NC(=O)CCCCC(N)=O GVNWZKBFMFUVNX-UHFFFAOYSA-N 0.000 description 1
- 206010012735 Diarrhoea Diseases 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- 239000003963 antioxidant agent Substances 0.000 description 1
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- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
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- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- HJUFTIJOISQSKQ-UHFFFAOYSA-N fenoxycarb Chemical compound C1=CC(OCCNC(=O)OCC)=CC=C1OC1=CC=CC=C1 HJUFTIJOISQSKQ-UHFFFAOYSA-N 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000004751 flashspun nonwoven Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 239000012943 hotmelt Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- 238000007500 overflow downdraw method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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- 239000000049 pigment Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920005630 polypropylene random copolymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- MWWATHDPGQKSAR-UHFFFAOYSA-N propyne Chemical compound CC#C MWWATHDPGQKSAR-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
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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
- A61F13/538—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 specific fibre orientation or weave
-
- 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
- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
-
- 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
- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49001—Absorbent articles specially adapted to be worn around the waist, e.g. diapers having preferential bending zones, e.g. fold lines or grooves
-
- 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
- B32B5/22—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
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
- D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
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- D—TEXTILES; PAPER
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- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
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- 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
- D04H1/4391—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 characterised by the shape of the fibres
- D04H1/43914—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 characterised by the shape of the fibres hollow fibres
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- 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
- D04H1/4391—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 characterised by the shape of the fibres
- D04H1/43918—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 characterised by the shape of the fibres nonlinear fibres, e.g. crimped or coiled fibres
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- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
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- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
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- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
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- D04H3/14—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 yarns or filaments produced by welding
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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- 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
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- 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
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- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
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- A—HUMAN NECESSITIES
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- 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
- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49019—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being placed longitudinally, transversely or diagonally over the article
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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
- A61F13/538—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 specific fibre orientation or weave
- A61F2013/5383—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 specific fibre orientation or weave by the fibre orientation in the x-y plane
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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
- A61F13/538—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 specific fibre orientation or weave
- A61F2013/5386—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 specific fibre orientation or weave by the fibre orientation in the z plane or vertical direction
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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
- B32B2250/00—Layers arrangement
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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
- 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
- B32B2262/0253—Polyolefin 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
- B32B2555/00—Personal care
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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
- B32B2555/00—Personal care
- B32B2555/02—Diapers or napkins
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/609—Cross-sectional configuration of strand or fiber material is specified
- Y10T442/612—Hollow strand or fiber material
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Woven Fabrics (AREA)
Description
なかでも紙おむつは、近年、中国を中心とした新興国の人口増加に伴い使用量が増大し、巨大な市場が見込まれている。一方で、使い捨てである紙おむつの使用量増大に伴うCO2排出量の増加が深刻な環境問題となりつつある。この世界的に増加するCO2排出量を削減する点より植物由来原料の検討が行われているが、品質、コスト、生産性の面より実現していない。一方で、不織布や包装の軽量化によるCO2排出削減の検討が紙おむつメーカーで検討されているが、十分ではない。
(a)C軸配向度が少なくとも0.85、
(b)平均繊維径が5〜20μm、及び
(c)中空率が5〜30%。
本発明のスパンボンド不織布の中空繊維を形成する熱可塑性樹脂としては、種々公知の熱可塑性樹脂を用い得る。具体的には、例えば、エチレン、プロピレン、1−ブテン、1−ヘキセン、4−メチル−1−ペンテンおよび1−オクテン等のα−オレフィンの単独若しくは共重合体である高圧法低密度ポリエチレン、線状低密度ポリエチレン(所謂LLDPE)、高密度ポリエチレン(所謂HDPE)などのエチレン系重合体;ポリプロピレン(プロピレン単独重合体)、プロピレン・α−オレフィンランダム共重合体、プロピレンブロック共重合体などのプロピレン系重合体;ポリ1−ブテン、ポリ4−メチル−1−ペンテン、エチレン・プロピレンランダム共重合体、エチレン・1−ブテンランダム共重合体、プロピレン・1−ブテンランダム共重合体等のポリオレフィン;ポリエステル(ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート等);ポリアミド(ナイロン−6、ナイロン−66、ポリメタキシレンアジパミド等);ポリ塩化ビニル、ポリイミド、エチレン・酢酸ビニル共重合体、エチレン・酢酸ビニル・ビニルアルコール共重合体、エチレン・(メタ)アクリル酸共重合体、エチレン−アクリル酸エステル−一酸化炭素共重合体、ポリアクリロニトリル、ポリカーボネート、ポリスチレン、アイオノマーなど例示することができる。これらのうちでは、エチレン系重合体、プロピレン系重合体、ポリエチレンテレフタレート、ポリアミド等がより好ましい。
本発明のスパンボンド不織布の中空繊維を形成するプロピレン系重合体は、プロピレンの単独重合体及びプロピレンとエチレン、1−ブテン、1−ペンテン、1−ヘキセン、1−オクテン、4−メチル−1−ペンテン等の炭素数2以上、好ましくは2〜8の1種または2種以上のα−オレフィンとのランダム共重合体(プロピレン・α―オレフィンランダム共重合体)であり、通常、融点(Tm)が125℃以上、好ましくは125〜165℃の範囲にある。α−オレフィンの共重合量は、得られるプロピレン系重合体の融点(Tm)が上記範囲にある限り特に限定はされないが、通常、10モル%以下、好ましくは6モル%以下である。
本発明のスパンボンド不織布は、前記プロピレン系重合体の中空繊維からなり、当該中空繊維が、(a)C軸配向度が少なくとも0.85、好ましくは、0.90以上、(b)平均繊維径が5〜20μm、好ましくは5〜17μm、及び(c)中空率が5〜30%、好ましくは10〜30%、さらに好ましくは14〜30%の範囲にある。
本発明のスパンボンド不織布は、特開昭60−155765号、特許3442896号、および特許3883818号などに示される密閉型のスパンボンドプロセスにより製造し得る。
本発明のスパンボンド不織布は、種々の用途に応じて、他の層を積層してもよい。スパンボンド不織布に積層される他の層は、特に限定はされず、用途により種々の層が積層し得る。
本発明のスパンボンド不織布と積層されるメルトブローン不織布としては、ポリオレフィン繊維からなり、(i)平均繊維径が2μm以下、(ii)繊維径分布CV値が60%以下、好ましくは50%以下の範囲、及び、(iii)繊維100本当たりの融着個数が15個以下、好ましくは12個以下、さらに好ましくは10個以下、であるメルトブローン不織布が好ましい。
本発明に得られるスパンボンド不織布、あるいは前記本発明のスパンボンド不織布を含む不織布積層体は、種々の用途に用いることができる。
本発明の紙おむつは、前記本発明のスパンボンド不織布、あるいは前記本発明のスパンボンド不織布を含む不織布積層体を用いてなり、紙おむつ、生理用ナプキン等の立体ギャザー用の部材となる。
本発明の紙おむつは、前記本発明のスパンボンド不織布、あるいは前記本発明のスパンボンド不織布を含む不織布積層体を用いてなり、紙おむつ、生理用ナプキン等のバックシート用の部材となる。
広角X線回折装置(リガク社製 RINT2550、付属装置:繊維試料台、X線源:CuKα、出力:40kV 370mA、検出器:シンチレーションカウンター)を用いて、試料を繊維軸方向に並べて試料ホルダーに固定し、結晶面ピーク[(110)面]の方位角分布強度を測定して得られた方位角分布曲線(X線干渉図)において、ピークの半価幅(α)から下記の式より中空繊維の繊維軸方向の配向度(C軸配向度)を算出して評価した。
配向度(F)=(180°―α)/180°
(αは方位角分布曲線におけるピーク半価幅)
得られたスパンボンド不織布を光学顕微鏡〔Nikon社製 ECLIPSE E−400〕で観察し、画面上のスパンボンド不織布を形成するフィラメントから100本を選びその繊維径を測定し、その平均値を当該不織布の繊維径とした。
当該スパンボンド不織布の繊度は以下の式を用いて算出した。
繊度[d]=0.00225×π×ρ[g/cm3]×D2[μm]×(1−中空率[%])
ここで、ρ[g/cm3]は樹脂の使用温度における溶融密度、Dは繊維径である
JIS L 1905(7.5.1法)に準拠して、JIS Z 8703(試験場所の標準状態)に規定する温度20±2℃、湿度65±2%の恒温室内でフィラメントを60本採取し、チャック間20mm、引張速度20mm/分の条件で引張り試験機(インストロン・ジャパン・カンパニイリミテッド製 インストロン5564型)を用いて引張試験を行い、60本分の試験片について引張荷重を測定し、それらの最大値の平均値を単糸強度とした。
スパンボンド不織布をエポキシ樹脂に包埋して、次いでミクロトームで切断し、試料片を得る。これを電子顕微鏡〔(株)日立製作所製S−3500N形 走査型電子顕微鏡〕で観察し、得られた断面像より観察された繊維断面像のおける繊維全体の断面積と中空部断面積を求め、以下の式より算出した。
中空率の値は繊維100本を測定した平均値とした。
JIS L 1096(6.19.1 A法 項)に準拠して、JIS Z 8703(試験場所の標準状態)に規定する温度20±2℃、湿度65±2%の恒温室内で、スパンボンド不織布から幅20mm×150mmの試験片を流れ方向(MD)と横方向(CD)でそれぞれ5枚採取し、45°の斜面をもつ表面の滑らかな水平台の上に試験片の短辺をスケール基線に合わせて置く。次に、手動により試験片を斜面の方向に緩やかに滑らせて試験片の一端の中央点が斜面と接したとき他端の位置の移動長さをスケールによって読む。柔軟性(剛柔性)は試験片の移動した長さ(mm)で示され、それぞれ5枚の裏表について測定し、流れ方向(MD)および横方向(CD)それぞれの平均値で表した。
JIS L 1906(6.12.1 A法)に準拠して、JIS Z 8703(試験場所の標準状態)に規定する温度20±2℃、湿度65±2%の恒温室内で流れ方向(MD)に25cm、横方向(CD)に2.5cmの不織布試験片を3枚採取し、チャック間30mm、引張速度30mm/分の条件で引張り試験機(インストロン ジャパン カンパニイリミテッド製 インストロン5564型)を用いて引張試験を行い、3枚の試験片について引張荷重を測定し、それらの最大値の平均値を引張強度とした。
JIS Z 8703(試験場所の標準状態)に規定する温度20±2℃、湿度65±2%の恒温室内で流れ方向(MD)に25cm、横方向(CD)に20cmの不織布試験片を採取し、その重量を平均目付(g/m2)とした。次いで、内径13mmφのポンチ(打ち抜き冶具)を用いて前記不織布のMD方向に対して15点、CD方向に対して10点を任意に選択し、合計で150点になるように不織布試験片を採取し、全ての試験片の重量を測定した。試験片のなかで重量が重いものを厚肉部として5点、重量が軽いものを薄肉部として20点を選択し、それぞれの平均値を求めて、下記式より均一度を求めた。
すなわち、均一度が小さいほど、均一性に優れる不織布である。
カトーテック(株)製のKES−FBシステムにより、引張、剪断、圧縮、表面摩擦、曲げの各試験の測定を、測定条件としてニット高感度条件にて行った。測定結果をニットアンダーウェアー(サマー)条件にて計測してFUKURAMI値とした。FUKURAMI値はその数値が大きいほど、厚みがあり、柔軟性に優れることを示す。
JIS L 1092A法に準拠して、JIS Z 8703(試験場所の標準状態)に規定する温度20±2℃、湿度65±2%の恒温室内で水処理用濾過材となる不織布積層体から採取した15×15cmの試験片10枚を採取し耐水圧試験機を用いて、水が漏れるときの圧力を測定しその平均値を求めた。
JIS L 1015に準拠し、測定した。
予め表面が滑らかで光沢のある紙片に空間距離25mmの区分線を作った。
プロピレン系重合体として荷重2160g、230℃のMFRが60g/10分のプロピレン単独重合体(PP−1)を用い、押出機(スクリュー径75mmφ)により成形温度240℃で溶融し、ノズルピッチが縦方向4.5mm、横方向4.0mmで、キャナル幅/孔面積=0.41mm-1の図1に示すような孔形状を有し、図2の繊維断面となるような中空繊維が得られる紡糸口金を配置した図5に示すような不織布製造装置(スパンボンド不織布製造装置、捕集面上の機械の流れ方向に垂直な方向の長さ:320mm)を用いて、冷却流体に(25℃、流量:42Nm3/分/m)の冷却風を用い、PP−1の単孔吐出量を0.52g/分、糸速度:4367m/分で紡糸し、捕集ベルト上に堆積させ、次いで、これをエンボスロールで加熱加圧処理(エンボス面積率:18%、エンボス温度:132℃)し、目付量が15g/m2のスパンボンド不織布を得た。
PP−1の単孔吐出量を0.6g/分とし、糸速度:4338m/分で紡糸する以外は実施例1と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
押出機(スクリュー径75mmφ)の成形温度を220℃にし、糸速度:3013m/分で紡糸する以外は実施例2と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
<スパンボンド不織布の製造>
スパンボンド不織布の目付を6.15g/m2とする以外は実施例2と同一方法でスパンボンド不織布を用意した。
上記方法で得たスパンボンド不織布の片面に、プロピレン単独重合体(PP−2、MFR:850g/10分、融点:159℃)をメルトブロー不織布製造装置のダイに供給し、設定温度:280℃のダイから、メルトブロー用ノズル(0.32mmφ、各ノズルの小孔の孔間の距離:0.20mm)を用いて、ノズル単孔あたりの吐出量:0.52g/分でノズルの両側から吹き出す高温高速空気(280℃、600m3/hr)と伴に吐出し、DCD(紡糸口金の表面からコレクターまでの距離):120mmでメルトブロー不織布の目付が0.7g/m2となるように上記スパンボンド不織布の上に吹き付けて、スパンボンド不織布とメルトブロー不織布の積層体を得た。次いで、上記と同一条件で製造されるスパンボンド不織布をメルトブロー不織布上に積層して、総目付:13.0g/m2(スパンボンド不織布/メルトブロー不織布/スパンボンド不織布=6.15/0.7/6.15g/m2)の不織布積層体を得た。
メルトブロー不織布製造において、吐出後に冷却空気(温度:15℃、風量:6000m3/hr)にて冷却と分散を行った以外は実施例4と同一の方法にて、総目付:13.0g/m2(スパンボンド不織布/メルトブロー不織布/スパンボンド不織布=6.15/0.7/6.15g/m2)の不織布積層体を得た。
プロピレン系重合体として荷重2160g、230℃のMFRが60g/10分、融点143℃のプロピレン・α−オレフィンランダム共重合体(PP−3)を用い、押出機(スクリュー径75mmφ)により成形温度220℃で溶融し、糸速度:3013m/分で紡糸し、捕集ベルト上に堆積させ、次いで、これをエンボスロールで加熱加圧処理(エンボス面積率:18%、エンボス温度:115℃)した以外は実施例2と同様の方法で、目付量が15g/m2のスパンボンド不織布を得た。
実施例2で用いた紡糸口金に替えて、紡糸口金としてキャナル孔幅/孔面積=0.41mm-1の図3に示すような孔形状を有し、図4の繊維断面となるような偏芯中空繊維が得られる紡糸口金を用い、糸速度:4390m/分で紡糸する以外は実施例2と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
実施例6で用いた紡糸口金に替えて、紡糸口金としてキャナル幅/孔面積=0.41mm-1の図3に示すような孔形状を有し、図4の繊維断面となるような偏芯中空繊維が得られる紡糸口金を用い、糸速度:3048m/分で紡糸した以外は実施例6と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
実施例1で用いた中空繊維製造用紡糸口金に替えて、0.6mmφの円孔(中実繊維用)を使用し、糸速度:4283m/分で紡糸した以外は実施例1と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
押出機(スクリュー径75mmφ)により成形温度260℃で溶融し、冷却流体に(25℃、流量:35Nm3/分/m)のエアーを用い、糸速度:4100m/分で紡糸した以外は実施例2と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
〔比較例3〕
スパンボンド法により押出機(スクリュー径75mmφ)により成形温度200℃で溶融し、糸速度:2296m/分で紡糸した以外は比較例2と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
図6に示すような開放型の不織布製造装置(スパンボンド成形機、捕集面上の機械の流れ方向に垂直な方向の長さ:320mm)を用いた以外は実施例1と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
紡糸口金(中実繊維用)として0.6mmφの円孔を使用し、糸速度:3731m/分で紡糸した以外は比較例4と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
実施例6で用いた中空繊維製造用紡糸口金に替えて、0.6mmφの円孔(中実繊維用)を使用し、糸速度:2591m/分で紡糸した以外は実施例6と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
実施例2で用いた紡糸口金に替えて、キャナル幅/孔面積=0.28mm-1の図1に示すような中空繊維製造紡糸口金を使用し、糸速度:3807m/分で紡糸した以外は実施例2と同様の方法で目付量が15g/m2のスパンボンド不織布を得た。
実施例4で用いた中空繊維製造用紡糸口金に替えて、0.6mmφの円孔(中実繊維用)を使用し、糸速度:2591m/分で紡糸した以外は実施例4と同様の方法で、総目付:13.0g/m2(スパンボンド不織布/メルトブロー不織布/スパンボンド不織布=6.15/0.7/6.15g/m2)の不織布積層体を得た。
2・・・紡糸口金
3・・・中空繊維
4・・・冷却風
5・・・ディフューザー
6・・・捕捉装置
7・・・吸引装置
8・・・スパンボンド不織布
Claims (14)
- 下記(a)〜(c)の要件を満たすプロピレン系重合体の中空繊維からなることを特徴とするスパンボンド不織布。
(a)C軸配向度が少なくとも0.85、
(b)平均繊維径が5〜20μm、及び
(c)中空率が5〜30%。 - 更に、(d)目付が5〜20g/m2である請求項1記載のスパンボンド不織布。
- プロピレン系重合体が、プロピレン・α−オレフィンランダム共重合体である請求項1記載のスパンボンド不織布。
- 請求項1〜3のいずれか1項に記載のスパンボンド不織布を含む不織布積層体。
- 請求項1〜3のいずれか1項に記載のスパンボンド不織布とメルトブローン不織布とが積層されてなる不織布積層体。
- メルトブローン不織布が、ポリオレフィン繊維からなり、
(i)平均繊維径が2.0μm以下、(ii)繊維径分布CV値が60%以下、(iii)繊維100本当たりの融着個数が15個以下、のメルトブローン不織布である請求項5記載の不織布積層体。 - メルトブローン不織布が、プロピレン系重合体繊維からなり、
(i)平均繊維径が2.0μm以下、(ii)繊維径分布CV値が60%以下、(iv)α晶分率が0.9未満、のメルトブロー不織布である請求項5記載の不織布積層体。 - 請求項1または2に記載のスパンボンド不織布を用いてなる紙おむつ。
- 請求項4〜7のいずれか1項に記載の不織布積層体を含む衛生用品。
- 中空繊維の中空部が偏芯してなる中空繊維である請求項1記載のスパンボンド不織布。
- 下記(a)〜(c)の要件を満たす熱可塑性樹脂から形成された中空繊維の中空部が偏芯してなる中空繊維からなるスパンボンド不織布。
(a)C軸配向度が少なくとも0.85、
(b)平均繊維径が5〜20μm、及び
(c)中空率が5〜30%。 - 請求項11に記載のスパンボンド不織布を含む不織布積層体。
- 請求項11に記載のスパンボンド不織布を用いてなる紙おむつ。
- 請求項12に記載の不織布積層体を含む衛生用品。
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