TWI221864B - Elastic bicomponent and biconstituent fibers, and methods of making cellulosic structures from the same - Google Patents

Elastic bicomponent and biconstituent fibers, and methods of making cellulosic structures from the same Download PDF

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Publication number
TWI221864B
TWI221864B TW091115869A TW91115869A TWI221864B TW I221864 B TWI221864 B TW I221864B TW 091115869 A TW091115869 A TW 091115869A TW 91115869 A TW91115869 A TW 91115869A TW I221864 B TWI221864 B TW I221864B
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Taiwan
Prior art keywords
fiber
fibers
elastic
bicomponent
cellulose
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TW091115869A
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English (en)
Inventor
Sen Ashish
Klier John
A Maugans Rexford
B Stewart Kenneth
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Dow Global Technologies Inc
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209Inorganic fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425Cellulose series
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    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425Cellulose series
    • D04H1/4258Regenerated cellulose series
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4266Natural fibres not provided for in group D04H1/425
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282Addition polymers
    • D04H1/4291Olefin series
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43825Composite fibres
    • D04H1/43828Composite fibres sheath-core
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43825Composite fibres
    • D04H1/43832Composite fibres side-by-side
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43835Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43838Ultrafine fibres, e.g. microfibres
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H15/00Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D21H15/10Composite fibres
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10Organic non-cellulose fibres
    • D21H13/12Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14Polyalkenes, e.g. polystyrene polyethylene
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10Organic non-cellulose fibres
    • D21H13/20Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904Staple length fiber
    • Y10T428/2909Nonlinear [e.g., crimped, coiled, etc.]
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2922Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2924Composite
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2929Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2929Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • Y10T428/2931Fibers or filaments nonconcentric [e.g., side-by-side or eccentric, etc.]
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2933Coated or with bond, impregnation or core
    • Y10T428/2964Artificial fiber or filament
    • Y10T428/2967Synthetic resin or polymer

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Multicomponent Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Luminescent Compositions (AREA)

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1221864 玖、發明說明: 【發明所屬之技術領域】 相關申請案之交叉參考 本案請求美國臨時專利申請案第60/306,003號,申請曰 5 2001年7月17日之權益。 發明領域 本發明係有關彈性纖維。一方面,本發明係有關雙組 分彈性纖維,而另一方面本發明係有關雙成分彈性纖維。 又另一方面本發明係有關具有芯/鞘構造之雙組分及雙成 10分纖維彈性纖維。又另一方面,本發明係有關其中形成鞘 之聚合物具有比形成芯之聚合物更低的溶點之纖維。又另 一具體實施例中,本發明係有關一種由纖維素纖維與具有 芯/鞘構造之彈性雙組分及/或雙成分纖維之組合形成彈性 纖維素結構之方法。 15 【先前技術】 發明背景 纖維素結構已知具有吸收性,此種性質讓纖維素結構 可用於寬廣多項用途。典型用途例如為尿片、傷口敷料、 女性衛生用品、床褥墊、圍兜、擦巾等。當然此等產品之 20目的係為了吸收及保有液體,此等製品達成此等工作之效 率大半係由其結構決定。USP 4,816,094,5,429,856及 5,797,895說明多項製品、其構造以及其原料,各案以引用 方式併入此處。 典型地’"及收性纖維素結構係由不易拉伸之材料製 6 成。例如,纖維素纖維用於各項期望目的皆益彈性 :種纖維素結構例如尿片料例如一使㈣膠㈣且於 …、知性之方式連結在—起。不幸其中多種 目對 :用性等理由需要某種程度的彈性’例如:片需隨= 卜靡、或擦巾需具有布_感及下 、人 足:於内部將形成㈣。間—液趙不 各部分而降低結構吸收性。 之 系要有具有更服貼外型之吸收性製品。如此通常表矛 不僅產品必須具有改良彈性,同時也需又薄又輕。卞 加彈性纖維或以彈性纖維替代部分纖維素纖維達成。例如
Anjur等人之USP 5,645,542(其揭示以引用方式併入此處)說 明由可濕潤短纖(例如纖維素纖維)以及熱塑性彈性纖維例 如聚烯橡膠製成之吸收性製品。但單純混紡短纖於彈性纖 維經常不足以獲得彈性纖維的完整效果,而未有損短纖吸 收性。纖維素纖維(最常見之短纖)傾向於彼此黏著,而與與 彈性纖維黏著相反。結果除非於吸收性結構組構過程中形 成兩種纖維之高度均勻混合物,否則兩類型纖維傾向於隔 開,而彈性體纖維效果降低或喪失。 如此,吸收性製品產業仍然持續感興趣於設計及組構 具有改良彈性而未有損吸收性之吸收性製品。此項興趣延 伸至製造吸收性製品之纖維性質、以及吸收性製品之組構 方法。 C發明内容3 發明概要 -具體實施例中,本— :纖維’其中怒包含熱塑性彈性之雙組 點比芯料μ,合物线 另1體實施例中, ::里低於3〇%。 -種成分包含熱塑性 為-種雙成分纖維,其中 包含均質分支聚 :X #TPU,以及另-種成分 溶點比另-種成人又m纖維外表面大部分之成分之 另-_實:低’且較好具有凝膠含量低於30%。 貫施例中,士 「纖維混紡」),~人〇 s明為纖維之現紡(或簡稱為 以及(ii)至少_種:二弹f生纖維其包含彈性芯及彈性鞘, 含熱塑性彈性體:好:外,纖維。彈性纖維繼包 支聚烯,更好為均質分支J平性纖維鞘較好包含均質分 —於芯聚合 量低於30重量。/。ΓΛ、 ” 軼好鞘聚合物具有凝膠$ 維,較好為纖唯专截、准大致上為(i)纖維以外之任一種r 或其中兩、4、熱塑性聚合物、氧化; 施例中Hr上纖維的組合。本發明之另一具仏 織維及(i)織維芯聚維’^好係暴露於或略低於(彳 物之炫點之溫度。杯.之^、但高於⑴纖維鞘聚/ 維混紡_ /之具體實施射,熔椒 本=上不含任何添加轉劑例如黏膠。 之又另—具體^例中,前段所述混紡用來^ 及拋Μ錄結構。此難構包括形標· 及拋棄式尿片之吸收襯墊。 另-具體貫施例中’本發明為—種製造物件,包含彈 性纖維及非織基材,纖維包含至少兩種彈性聚合物,一種 聚合物較妤為熱塑性彈性體,更好為11>1;;另一種聚合物 為均質分支聚稀較好為均質分支實質線性乙烯聚合物,其 中該纖維係於無黏著劑存在下熔黏至非織基材。本具體實 施例之製造結構範例包括拋棄式尿片之腿翻邊、腿皺縮 處、腰束帶及側嵌片。 本發明之另一具體實施例中,連接至彈性纖維之非彈 性短纖如纖維素纖維對連結至其它非彈性短纖之非彈性短 纖之比係藉下述方法提高,該方法中彈性纖維為以親水劑 接枝之疏水纖維,例如以順丁烯二酐接枝之聚烯纖維。本 具體實施例之另一項延伸例中,以及其中該親水劑為酸或 酐例如順丁雄二酐,-旦親水劑接枝於纖維時,則可與胺 反應。 本發明之另-具體實施例中,對於彼此藉氯鍵結合至 非彈性短纖例如纖維素纖維而言,連結至彈性纖維之非彈 性短纖對連結至其它非彈性短纖之非彈性短纖之比可藉下 述方式提南’於此等纖維與彈性纖維混紡之前或同時,使 用去鍵結劑例如含有-或多個酸基之第四銨化合物處理非 彈性短纖而提高比值。去鍵結劑去活化至少部分非彈性短 纖間的氫鍵。 本發明之另-具體實施例中,非彈性短纖與彈性纖維 之混紡可藉由於水性介質且較好於界面活性劑存在下伴以 強力授動混纺纖維而提升。此種程序可促進彈性纖維彼此 間的分開,肉 此種方法可I讓各纖維更為可用於與非彈性短纖連結。 具體實施㈣2=或於本發明之—❹種其它纖維分離 本發明之:s 度空具體實施例中,於與短纖混紡前,^ 性纖維彼此4 纖維彼此分離。此項技術也促進彈 又77離,如此又改良其可利用於與短纖連結。 ^本發明之此一具體實施例也可單獨或組合一或多 匕本發明之具體實施例使用。 ” π前述三種纖維分離與接枝具體實施例特別可用於組構 彈性吸收性結構例如尿片、傷口敷料等。 【實施方式】 較佳實施例之詳細說明 彈性雙組分及雙成分纖維 用於此處纖維」或「纖維狀」表示一種粒狀材料其 中該材料之長度對直徑比係大於約10。相反地「非纖維」 或「非纖維狀」表示一種粒狀材料其中長度對直徑比約為 10或10以下。 用於此處「彈性」或「彈性體」描述纖維或其它結構 例如薄膜,其於初次拉伸後以及於第四次拉伸至100%應變 (長度加倍)後可回復至其拉伸後長度之至少約50%。彈性也 可以纖維之「永久定型」描述。永久定型係經由將纖維拉 伸至某一點以及隨後釋放纖維至其原先位置,然後再度拉 伸測定。纖維開始拉動負載之點定名為百分永久定型。 用於此處「雙組分纖維」表示包含至少兩種組分亦即 1221864 至少有兩個分開聚合物本體之纖維。第—組成分亦即「組- 分A」概略用於加熱連結溫度期間保有纖維形式。第二組成. 分以及「組分B」用作黏著劑功能。典型地組分A之炫點比 組分,較好組分a之脉溫纽組細純溫度至少高 5於C較好至少高4〇°c。 為求簡化,雙組分纖維結構典型稱作為芯/鞘結構。但 - 纖維可具有多種多組分組態配置之任—者,例如對稱性怒· : 勒、非對稱性芯-勒、並列、派截面、新月形等。此等組態 配置個別之主要特色為至少部分較好至少大部分纖維絲 « 面包含纖維勒部分。USP 6,225,243(其揭示以引用方式併入 此處)第1A-1F圖顯示多種芯/鞠結構。 用於此處雙成分纖維」表示纖維包含至少兩種聚合 物成分之緻密摻合物。雙成分纖維構造常稱作「島於海 中」。 15 用於本發明實務之雙組分纖維為彈性纖維,且雙組分 纖維之個別組分皆為彈性。彈性雙組分及雙成分纖維為已 知例如USP 6,140,442(其揭示以引用方式併入此處)。 · 本發明中,芯(組分A)為熱塑性彈性體聚合物,其說明 例為二段、三段或多段彈性共聚物例如烯烴共聚物如苯乙 , 20烯-異戊二烯-苯乙烯、苯乙烯-丁二烯-苯乙烯、苯乙烯-乙烯 · · /丁烯-苯乙烯或苯乙烯_乙烯/丙烯_苯乙烯例如以商品名克 雷頓(Kraton)彈性體樹脂得自殼牌化學公司;聚胺甲酸酯 類’例如以商品名皮拉桑(PELLATHANE)聚胺甲酸酯得自 陶氏化學公司’或史邦代以萊卡(LyCra)商品名得自杜邦公 11 二:酿胺類例如聚犧酿胺以商品名匹貝斯〜 /酿胺得自艾笑愛托肯(肌AtoChem)公司;以及聚gt 類例如以商品名海崔爾(Hytrel)聚s旨得自杜邦公司。熱塑 胺甲動旨類(亦即聚胺甲_)為較佳芯聚合物特別皮' ' 聚胺甲酸酿。 乘
•八鞘(組分B)也是彈性體,其包含均質分支聚烯,較好均 貝分支々乙稀聚合物及更好為均質分支實質線性乙烯聚合 :此等材料為眾所周知。例如usp 6,刚,442提供較佳均 貝刀支實質線性乙稀聚合物之絕佳說明,其包括描述其它 10均貝分支聚烯之其它專利案及非專利文獻。
均質分支聚烯具有密度(藉ASTM/D792測量)約為〇 91 克/立方厘米或以下,溶點係於或低於i⑻。c(藉Dsc測量)。 更好聚烯密度為約0·85至約0.89克/立方厘#,熔點為約5〇 至7〇°C。較好聚烯於炫點之黏度允許其自由流動用以黏合 15至短纖或非織織物結構。聚烯之熔體指數(MI,藉ASTM D1238於190°C測量)至少約為3〇且較好至少約1〇〇。添加物 例士抗氧化y [例如封阻酉分系(例如伊佳諾(I巧抓⑽)rtm 1010,>飞巴嘉吉公司製造)及亞磷酸酯(例如伊佳芙 (Irgafos)IlTM 169 ’汽巴嘉吉公司製造w、黏著添加劑(例如 20聚異丁稀(PIB))、防結塊添加劑、顏料等也可涵括於使用的 均質分支乙烯聚合物,讓彈性纖維至其不會中斷本發明之 特徵性纖維之織物性質增強的程度。 聚稀之凝膠含量係低於30較好低於20及較好低於10重 量% °凝膠含量為聚烯交聯程度之測量值,因聚烯主要功 12 1厶厶1 月色係對纖維提供可 或非織結構 /化外σ卩組分,以求容易熱黏至短纖及/ 故以聚烯,極少(若有)交聯為佳。此外,通常 Μ之交聯愈少則魅愈低。 非織結構,矣- 成内聚 _ 」衣不一組纖維彼此連結,讓該組纖雉形 紡邦、^體°構。此種結構可藉業界已知技術例如氣補、 尼龍、聚烯類、氧化矽類、 如妝甲酸酯類、聚(對 (㈣對苯二曱醯胺)、萊卡 10 之聚胺甲酸酿,杜邦公司製造;二二異氰酸應製: 維素及聚醯胺。 ,、及天然聚合物如纖 用於此處「短纖一,夷千 , ^表不天然纖維或由製造妥長纖 斬眛吵叩, 不〜a之吸收性結構作為液體的 15 :材二、可作為液體分布的導管。短纖包括天然及合 Ψ Γ材料包括纖維素纖維及紡織纖維例如棉及嫘 聚二成_非吸收性合成聚合物纖維例如聚稀類、 Λ -日類、聚丙烯酸系、聚醯胺類及取— ^ Υ, J, 艰本乙稀類。非吸收性 3成短纖較好為捲曲,換t之, 心 織維沿其長度方向帶有連 20 續絲、相或聚轉徵。由於利 w, j用性、成本及吸收性等 里由’以纖維素纖維為較佳短纖。 為了促進短纖與彈性纖維之良好混合,雙組分纖維較 好經濕潤J。用於「經濕潤或「 、AaA 」飞可濕潤」表示纖維具有 :於空氣接觸角小於90度。此等術語及性質之量測更完 整說明於USP 5,645,542。 13 可、濕潤短纖之彈性纖維係以足夠賦與所需吸收性及彈 ^生之里存在於本發明彈性體吸收結構。典型體短纖之存在 里以短纖與彈性纖維總重為基準,係由約20至約80%重量 比較好約25至約75及更好約3〇至約70%。 雖然雙組分及/或雙成分纖維係以其它用以組構彈性 吸收性結構之彈性纖維之相同方式使用,但較好雙組分及/ 或雙成分鐵維彈性纖維係組合本發明之一或多個具體實施 例使用’容後詳述。總而言之,使用雙組分或雙成分纖維 作為彈性吸收性結構之彈性纖維組分,可提供具有改良彈 ^而未有損結構吸收性之彈性吸收性結構。如此獲得更輕 更薄及/或更為隨形之結構。 接枝改性彈性纖維 本务明之此一具體實施例中,彈性體纖維對短纖之黏 著丨生係經由將含極性基如羰基、羥基或酸基化合物接枝至 彈丨生體纖維而提升。本發明之此一具體實施例可應用於同 質填充或雙組分或雙成分彈性體纖維。「同質填充」纖維為 包含單一組分、換言之,大致上全長為大致均質之纖維。 至於雙組分及雙成分纖維,含極性基化合物接枝至纖維鞘 組分(亦即形成外表面至少一部分之組分)。 2〇 含極性基之有機化合物也可藉任一種已知技術接枝至 彈性體纖維,例如教示於USP 3,236,917及5,194,509,二案 揭示以引用方式併人此處。例如,917專利案中,聚合物(亦 即彈性體纖維聚合物)被引進雙輥混合機内且於6(rc溫度 此合。然後連同自由基引發劑例如過氧化苯甲酿添加含幾 14 1221864 基有機化合物,各組分於3(rc混合至接枝完成。,5〇9專利 案中其知序類似,但反應溫度較高例如m獅。c,而未 使用自由基引發齊J。 接枝之替代及較佳方法教示於usp 4,95〇,541,其揭示 5以引用方式併入此處。本程序也使用雙螺桿去揮發分擠懲 機作為此ά咸置。彈性體纖維例如聚烯以及未飽和含羰基 化合物於擠麼機内部混合及於反應物炼化之溫度、且於自 由基引發劑存在下反應。此種程序中,較好未飽和含幾基 有機化合物係注入擠壓機内部維持加壓區段。 1〇 由該纖維製成的聚合物通常係於(藉任一種可用以組 構纖維之方法)形成纖維前,以含極性基化合物接枝。 接枝至彈性體纖維之含極性基有機化合物為未飽和, 換吕之,含有至少一個雙鍵。含有至少一個極性基之代表 性較佳未飽和有機化合物為烯屬未飽和羧酸類、酐類、酯 15 類及其鹽類,包括金屬及非金屬。較好有機化合物含有與 幾基軛合之烯屬未飽和度。代表性化合物包括順丁烯二 酸、反丁烯二酸、丙烯酸、甲基丙烯酸、衣康酸、巴豆酸、 α•甲基巴豆酸、桂皮酸等酸以及(若有)其酐、酯及鹽衍生 物。順丁烯二酐為含有至少一個烯屬未飽和度以及至少一 個Ik基之較佳未飽和有機化合物。 接枝彈性體纖維之未飽和有機化合物組成分以彈性體 纖維及有機化合物組合重量為基準,其存在量至少約為 G·01 %,較好至少約0· 1 %及更好至少約0.5%。未飽和有機化 合物之最大量可視情況方便改變,但典型地不超過約10, 15 較好不超過約5 ’及更好不超過約2重量%。 有關雙組分及雙成分纖維,接枝可藉由接枝反應含極 性基化合物與全部鞘組分(組分B1)製造,或經由使用接枝 濃縮物或主批料(B 2)亦即含極性基化合物混合鞘組分製 造。若使用此等組分之摻合物,則較好組分B2係占B1與B2 組合之約5至50及更好約5至15重量%。摻合物中含極性基 化合物之較佳濃度為與鞘組分混紡後,所得混合物中,最 終混合物具有終含極性基濃度至少0·01%重量比及較好至 少約0.1%重量比。 於接枝濃劑用於雙組分纖維之案例中,較好接枝濃劑 (Β2)具有比基體黏著材料(Bi)更低的黏度。如此促進材料通 過纖維成形壓模期間,接枝組分遷移至纖維表面。此項目 的係經由提升接枝化合物至纖維表面濃度而增進鍵結纖維 與短纖間之黏著。較好組分Β2之熔體指數為組分Β1熔體指 數之2至1〇倍。 纖維素氫鍵之去活化 本發明之另一具體實施例中(短纖為纖維素纖維之具 體實施例中),吸收性彈性結構之彈性效能係經由促進較多 纖維素-彈性纖維間之鍵結,而犧牲纖維素-纖維素纖維鍵結 予以提升。本具體實施例中,纖維素短纖係於其混合彈性 纖維之則或同時,使用去鍵結劑處理。此等鍵結及其破壞 述於Craigp0ffenberger名稱「本體與效能,柔軟與安全」, 2000年10月30日至11月2日於多倫多舉行之2000年非織/吸 收内幕會5義。將此等氫鍵解除叙連,可讓更多纖維素纖維 1221864 與彈性纖維鍵結,且可形成更多纖維素-彈性纖維鍵結,由 · 於吸收結構獲得更高彈性。 · 可用於纖維素纖維之纖維間氫鍵解除耦連之化合物包 栝含一或多個酸或酐基之第四4安化合物。典型此等化合物 5為二月曰肪基一曱基、17米11坐5烧基二甲基嶋基以及二烧 氧化烷基二甲基。解除鍵結劑係基於欲處理之纖維素纖維 _ 重:ί以約0·01至約10%重量比數量使用。另一種可用於將解 除耦連纖維素-纖維素氫鍵之化合物為亞洛塞夫(arosurf) PA-?77,高史密德(Goldschmidt)公司製造之界面活性劑。 鲁 10 本發明之此一具體實施例可單獨或組合一或多種本發 明之其它具體實施例使用。 於水介質攪動俾分離彈性纖維 本發明之此一具體實施例中,彈性纖維係經由於水介 質中授動彼此分離。彈性纖維典型為細丹尼彈性纖維,難 15以彼此分開,因此難以於建構彈性吸收結構期間與短纖均 勻混紡。如此「細丹尼」彈性纖維表示每長絲之直徑小於 、力15丹尼之彈性纖維。纖維典型係根據直徑分類,單纖通 _ 常定義,個別纖維直徑大於約15丹尼通常大於約30丹尼之 、.藏、准u丹尼纖維通常定義為直徑小於約⑽微米之纖維。 20 j具體實施例中,彈性纖維係置於水性介質,然後藉 " 純I#手&例如機械攪動器、噴射幫浦等激烈擾動。可 \ i面活f生劑及/或濕潤劑,於彈性纖維已經充分彼此分 離後增加短纖。+ t 牡力、 本务月之較佳具體實施例中,短纖係組合 去、建AU、加。於形成彈性纖維與短纖之均質混紡後去除 17 水,典型係藉過濾然後暴露於熱例如於烘箱内一段時間去 除水。一旦充分乾燥結果所得絨絮漿準備加工處理成為彈 性吸收結構。此時可添加各種添加劑例如超吸收粉末至絨 絮漿。於拉伸步驟期間須小心避免將纖維溫熱至將過早活 5 化/炫化鍵結纖維的溫度。 本特定具體實施例也可用於具有任何組成及結構之彈 性纖維(包括均質填充纖維),也可用於任何短纖。 高強度空氣混合 本發明之此一具體實施例中,彈性體纖維係使用高強 10 度空氣混合技術彼此分離。此項技術係類似前述於水介質 攪動技術·但未採用水性介質(或未採用任何液態介質)。彈 性體纖維無論均質填充纖維或雙組分纖維,以機械或藉氣 ,動裝置接受強力攪動,一旦充分分離後,於本發明‘之又一 具體實施例中與短纖混紡。雖然此項技術可免除乾燥所得 15 纖維混紡的需求但不適合組合去鍵結劑用於纖維素纖維, 或組合界面活性劑及/或濕潤劑用於彈性體纖維。此處本具 體實施例也可組合一或多個本發明之其它具體實施例,例 如使用雙組分或雙成分彈性體纖維、接枝改性彈性體纖 維、以及纖維間之氫鍵先前已經經過去活化之纖維素纖維 20 使用 彈性吸收性結構構造 本發明之彈性吸收性結構可由短纖與具有芯/勒構造 之雙組分及/或雙成分彈性纖維混紡構成,其中芯為熱塑性 胺甲酸酯,鞘為均質分支聚烯。根據本具體實施例,短纖 18 1221864 與彈性纖維之混紡係以任一種習知方式製備,及/或使用前 述任一種本發明技術製備,視需要地隨後混合一或多種超 吸收聚合物製備。此種混合也可使用習知技術進行,但因 雙組分或雙成分纖維存在有低熔點黏著組成分(亦即均質 5 分支聚’烯),絨絮漿可以低抵約70°C之加熱黏結而形成彈性 吸收性結構如尿片。彈性鍵結纖維之黏著組分之熔點較 低,允許使用目前使用中的商用設備,但於較低溫又表示, 比其中黏著性組成分具較高熔點之均質填充彈性體纖維及 雙組分彈性體纖維,可達成更快速製造速率。但較低熔點 10 及/或更快速鍵結速率,可減少或緩和鍵結纖維與結構製造 機器例如尿片製造機或於線上活化問題。 於習知吸收芯或結構,纖維素纖維典型係使用乳膠彼 此黏合。乳膠經常聚集於纖維素纖維界面,其當固化時將 纖維素纖維結合在一起。使用具有兩種分開本體(例如芯及 15 鞘)之雙組分或雙成分鍵結纖維可達成更佳鍵結系統。芯之 熔點高於爐溫,鞠之熔點係低於爐溫。雙組分及雙成分纖 維於其接觸位置有效融合至纖維素纖維。如此纖維素纖維 間之連接比融合點大小更長。如此又產生更具撓性的結構。 均質分支乙烯聚合物特別為均質分支實質線性乙烯聚 20 合物可製作絕佳鞘材料,原因在於其熔點係低於多種其它 彈性聚合物料。較好鞘材料於低於芯材料熔點至少約20°C 且更好至少約40°C之溫度熔化。 彈性紙構造 雙組分及雙成分彈性鍵結纖維可用於製造彈性紙,亦 19 1221864 即有某種彈性程度的紙。如㈣ 維包含帶有彈‘1±均質分支聚 、销之雜鍵結纖 為以順丁稀二酐等化合物接=^ 彈性纖維混合纖維素纖維而未中斷 _ °右雙組分 5 、、天知此算罅组八十樜;X 素·纖維素氫鍵’則 冰加此4雙心或雙成分料纖 種彈性,但紙張將於5%應變撕裂。換t W ,,而提供某 去气綠炎中斷,Η丨丨、;1 Μ ’右纖、維素-纖雉 素虱鍵未帽麻加雙組分〜錢成分雜_的效果 極低。心_素'纖⑽氫 —
gjf .. ,e „ !、且刀或雙成分彈性纖雉 中斷,則所侍紙之拉力顯著下 ^ 10 抗於5%應變的撕裂。纖維辛 .者口设而可對 芦I纖維素SU建可如前文教示中 斷。 為了/又仔纖維素'纖維素氫鍵被中斷的最大效果,希望 雙、、且刀彈H纖維與纖維素纖維有良好分散。雙組分彈性纖 。。刀放於、14素纖維基體内可於混合纖維素纖維前藉分離 °° L、戴、’㈣束㈣。此處纖維集束齡離也可藉前文教示
(亦Pr57強度空氣攪動)或濕分離法分離,以乾分離法優 於濕分離法。 氏張彈性也維結構影響。低模量彈性纖維可提 ::織物性能但對加卫處科利。長鍵結纖維(亦即雙組 製造雙成ϋ纖維)混積體麟(亦即麟素纖維), 更困難*彈丨生(亦即較低截面間鍵結)的紙,但完全分散變 分束、原因在於長撓性彈性纖維容易加捻因而讓其難以 心上L右彈性鐽結纖維較粗,則可獲得較佳分散,但對 有不良影響。總結而言,經由使用低模量纖維、又 20 1221864 長又粗之鍵結纖維以及積體纖維短的混合,可獲得彈性與 · 分散性間之較佳平衡。 ^ 此外,紙張之彈性纖維含量也對紙張強度及彈性有影 響。雙組分或雙成分彈性鍵結纖維含量過少,結果導致其 5它纖維黏合成為織物不良,結果導致強度及彈性不良的 紙。此種彈性鍵結纖維含量過多,結果導致過多截面間的 黏合,雖然紙張強度佳,但彈性不佳。過多雙組分彈性鐽 結纖維造成的負面效果可於紙張構造中採用較高膨鬆予以 改良。 ^ ίο τ列實例共舉例朗前述本發狀若干具體實施例。 除非另行註明,否則全部份數及百分比皆為以重量計。 特定具體實施例 實施例1 ··聚乙烯之接枝改性 實質線性乙烯/1-辛烯聚合物(ΜΙ_73,密度·⑽了克/立方 15厘米)以順丁稀二酐接枝而製造具有ΜΙΚ以及0.35重量 %含夏早位係衍生自順丁烯二酐之材料。遵照〇卯 4,950,541教不之接枝程序。經接枝後之聚乙稀用作為接& · 濃劑,使用具有ΜΙ=30及密度=〇.87克/立方厘米之乙稀^ 辛歸聚烯稀釋為2 :卜所得稀釋後的材料用來形成下列實 . 2〇例使用之雙組分彈性纖維之鞘(黏著組分)。 - 實施例2Α··於水性介質使用強力混合做纖維分離 雙組分W丹尼彈性纖維包含5〇%皮拉桑測撕F (陶氏化衫司製造之彈性體«性聚胺甲_)以及50% 均質分支貫質線性乙稀A辛烯聚烯係如上實施船所述製 21 1221864 備。熱塑性聚胺甲酸醋形成雙組分纖維之芯’順丁烯二軒 接技乙烯聚合物構成雙組分纖維之鞘。30%彈性體鍵結纖 維及70%高亮(Hi Bright)纖維素纖維(未經打漿但經漂白之 牛皮紙針葉木於1.1%水中浸潰及浸泡隔夜)之混合物於5升 5 水含5克界面活性劑(羅德米爾(Rhodameer) ’開特波 (Katapol)VP-532)及 110克 0.5%固體美納佛(Magnafloc) 1885 陰離子性聚丙烯醯胺黏度改性劑添加至華陵摻混機。混合 物攪拌而製造實質均勻彈性纖維與纖維素纖維混合物,其 隨後被成形為彈性吸收紙。 10 實施例2B :使用強力混合於水性介質分離纖維與氫鍵之去 活化 試樣編万虎 芯/鞘組成* 丹尼 1.2 TPU/英袼治(30 MI) 6.78 1.3_ TPU/MAH-g-英格治(3〇 MI) 11.32 2.2 TPU/英格治(3〇 Μη 麵 3.2 TPU/奂袼治(18 1VTT) 6.4 3.3 TPU/奂格治(18 MI) 11.4 首先’全部上列五種纖維系統(絲束)使用剪刀切除"8 -吋長。帶有12%黏結劑纖維負叙1〇〇克/平方米氣鋪概塾須 I5摻混0.43克黏結劑纖維。足量纖維經切割而製造3個概塾。 於將纖維絲束(各絲束有η條分開_長絲)切成定長 後,次〆步驟係將個別纖維由絲束分開,因而可推混於纖 維素紙黎且氣鋪成襯塾。各例之韻聚合物即使於室溫仍缺 相當「沾黏」_(〇·870克/立方厘米密度),個別纖維於各例中 20隨著時間的經過完全「融合」在一起。 22 1221864 為了將纖維絲束分離成為個別長絲,稱重〇·43克黏结 劑纖維且加至華稜摻混機。於其中加入2.00克纖維素漿(1〇〇 克襯墊共使用3.195克纖維素漿)。其次,水帶有亞洛塞夫 ΡΑ-777界面活性劑摻合物(得自高史密德公司)之25 : 1溶液 5 添加至黏結劑纖維加纖維素纖維混合物。摻合物活化2_3 秒,於此段期間,黏結劑纖維絲束瞬間「開啟」成為個別 纖維長絲。纖維素漿添加至前述混合物,俾確保於隨後乾 燥期間黏結劑纖維長絲維持分離。前述程序不僅可讓黏結 劑纖維分離成為個別長絲,同時也可導致紙漿的氫鍵去活 10 化。 次一步驟包含乾燥黏結劑纖維及紙漿混合物。纖維首 先係使用篩由水/界面活性劑溶液分離。然後纖維混合物於 50°C真空烘箱乾燥隔夜,俾確保任何殘餘水分皆被去除。 然後乾燥後之纖維混合物摻混於氣鋪腔室内(此時也加入 15 1.195克「去活化」且經乾燥之纖維素紙漿),吸收襯塾結構 係使用真空輔助法製造。 實施例3 :彈性紙比較 8吋乘8吋(8”x8”)彈性紙試樣係藉實施例2之程序製 僙。試樣3·1及3.2皆包含1〇〇%高亮纖維素纖維。實施例3.3 2〇 奚3·8係由各種百分比之高亮纖維素纖維,以及前文實施例 2所述之彈性雙組分纖維製造。試樣3.9及3· 10含有第三纖維 緝分亦即尼龍纖維。紙試樣係使用諾伯沃德(Noble & Wood) 造紙機製造。 試樣3.4之製法係將0.9克雙組分纖維預先浸泡於50 cc 23 1221864 水加5滴卡塔波(Katap〇1)界面活性劑(vp_53幻,然後又浸泡$ 刀鈿Ik後加入190 cc南党纖維。此種程序係使用纖維素纖維 之增稠效應來崩解雙組分纖維素纖維之團塊。華陵推混機 係於1500啊操作。所得紙張於250T於艾默生(Emerson) 5裝置乾燥時仍然帶有目測可見之雙組分纖維團塊。但當紙 張被撕開時撕裂典型介於被黏合的彈性纖維間。 試樣3.5之紙大致上係以試樣3·4之紙之相同方式製 備,但部分雙組分纖維團塊於華陵摻混機(高強度空氣攪動 範例)於乾燥態崩解。於團塊崩解後,5〇 cc帶有5滴卡塔波 10之水加至摻混機内,混合物再度以低設定值授拌。隨後19〇 cc同冗纖維素纖維帶有另外100 cc水加至混合物,又於1〇〇〇 卬m攪拌5分鐘。此試樣紙張帶有目視可見之團塊較少,黏 合之彈性纖維間出現撕裂。 試樣3 · 6紙係以先前試樣之相.同纖維素紙漿含量亦即 15 190⑶製造的約7〇磅紙。二克雙組分纖維添加至其中然後於 華陵摻混機以乾基準(亦即於無水性介質存在下)於低設定 值崩解1.5分鐘(此程序重複三次,兩次攪拌間由摻混機壁上 刮下黏著物)。隨後加入100毫升含5滴卡塔波之水,所得混 合物再度以低設定值攪拌丨分鐘,然後組合19〇 ^高亮纖維 2〇 ^ 素纖維加足量水共製成600 cc總混合物。然後將總混合物移 至燒杯’於1500 rpm攪拌2分鐘。由混合物製成之紙於撕裂 前顯示有某種彈性。 試樣3.7為試樣3.6的重複,但使用2.4克雙組分纖維來 替代2.0克。 24 1221864 試樣3.8為試樣3.7的重複,但消泡劑添加卡塔波(佛瑪 斯特(Foammaster)VF,代蒙仙洛(Diamond Shamrock)公司製 造3滴:)。 試樣3.9為試樣3.8之重複,但也加入5克得自羅德島波 5 塔克微纖維公司之0.080 SD尼龍纖維。尼龍添加100 cc水, 幾乎未經攪拌而獲得高度分散。尼龍-水混合物添加至雙組 分纖維-高亮混合物,總混合物600 cc於1500 rpm交換兩分 鐘。添加尼龍之目的係為了輔助纖維素纖維間鍵結的崩潰。 試樣3.10為試樣3.9之重複,但使用2.4克雙組分纖維、 10 20滴卡塔波、6滴消泡劑、2克尼龍纖維及100 cc高亮纖維素 纖維(約1.1克)。 試樣細節及於英史崇(Instron)儀器試驗結果報告於 下表。 15 25 1221864 L^J υο ·〇 be UJ bs u、 i !匕。 J___ |^|-| Is 1.1(20%) 2.1(42%) 2.1(47%) 2.1(47%) 2.1(51%) 2.1(70%) ! 2.1(70%) 2.1(70%) 0.059 2.1(100%) 紙漿 3(1()()%) i ? —! > 〇〇 2.4(44%) 2.4(48%) 2.4(53%) 2.4(53%) 2(49%)丨 0.9(30%) j 0.9(30%) 0.9(30%) o i 1 〇 雙組分 纖維 i ^ ; 一 ! i 冰 1 ί ? j 1菸1 :! 12(36%) 0·5 (10%) o o o o 〇 o 1 o O 尼龍 丨纖維 | ^ 1 1 ! ^ ; ν LTk LA Ln Lh U) UJ ro Φ TV* 20+消泡劑 2(H消泡劑 5十消泡劑 u·» U\ o o o 卡塔波 滴數 j .< : Z 1 \ 1 1 < < < < < *< < 〆 < i撕裂, i是/否 1 o oc- L/1 yj Si : ^ L/\ i-o bo to U) IsJ bs W\ to Lj o U L/、 o υΊ o ;尖峰 丨拉力 L·· . 嘮(兩次試驗平均) @5%a變(0.10吋位移),英史崇(!吋寬,2吋顎頰空間) 〇 〇 Os un to 3; o L/i L/l o u. 00 o fo o p L/) o o o o o !第2次拉扯 | @5%應變 L/、 o ro O isj \〇 io ro t-o o o 第2次拉扯 @5%應變,: 占尖峄之丨 百分比 0.023 0.018 0.023 0.019 I 0.014 0.022 0.023 0.018 0.018 0.018 初「陡峭.i 位移,对 0.038 1 t 1 0.038 0.045 0.044 1 0.045 0.062 1 Total rip Total rip 第2次拉扯 初位移,对 一V '味、 a
26 1221864 雖然已經就先前實施例說明本發明之細節,但該細節 僅供舉例說明之用而非視為囿限本發明。可未悖離如下申 ’ 請專利範圍之精髓及範圍對先前實施例做出多種變化。 5L圖式簡單說明3 無。 【圖式之主要元件代表符號表】 無0 響
27

Claims (1)

1221864 拾、申請專利範圍: 1. 一種具有芯/鞘構造之彈性纖維,該纖維包含至少兩種 聚合物,芯包含熱塑性彈性體,以及鞠包含具有凝膠含 量低於30重量%之均質分支乙烯聚合物。 5 2.如申請專利範圍第1項之纖維,其中該鞘聚合物具有比 芯聚合物更低的熔點。 3. —種纖維混紡,包含(A)—種具有芯/鞘構造之彈性纖 維,該纖維包含至少兩種聚合物,芯包含熱塑性彈性 體,以及鞘包含具有凝膠含量低於30重量%之均質分支 10 乙烯聚合物,及(B)至少一種非彈性纖維。 4. 如申請專利範圍第3項之纖維混紡,其中該非彈性纖維 為纖維素纖維、毛、絲及矽酸鹽纖維中之至少一者。 5. 如申請專利範圍第3項之纖維混紡,其中該(A)之纖維係 熔黏至(B)之纖維。 15 6. —種製造物件,包含如申請專利範圍第3項之纖維混紡。 28 92· ίο. 23 公告本 釐里專利說明書 發明直4丨ί约Η日壹修正本 92年10月23曰 (本说明書格式、順序及粗體字,請勿任意更動,※記號部分請勿填寫) ※申請案號:分…1221864 ※申請日期:从“ 分類:]>(产H 壹、發明名稱··(中文/英文) 一11/个% 彈性雙組份與雙成份纖維以及由其製造纖維素結構的方法 ELASTIC BICOMPONENTAND BICONSTTTUENT FIBERS,AND METHODS OF MAKING CELLULOSIC STRUCTURES FROM THE SAME 武、申請人:(共1人)
姓名或名稱:(中文/英文) 美商·陶氏全球科技股份有限公司 DOW GLOBAL TECHNOLOGIES INC. 代表人:(中文/英文) 泰勒葛拉漢E. TAYLOR, GRAHAM E. 住居所或營業所地址··(中文/英文) 美國密西根州密德蘭市·華盛頓街1790號大樓 Washington Street, 1790 Building, Midland, Michigan 48674, USA 國籍:(中文/英文) 美國(U.S.A.) 參、發明人··(共1人) 姓名:(中文/英文) ⑴赛恩亞希斯(Sen,Ashish) (2) 卡勒約翰(Klier,John) (3) 瑪葛恩斯雷克斯佛德A. (Maugans,Rexford A.) (4) 史泰瓦# 肯尼斯B. (Stewart,Kenneth B.) 住居所地址:(中文/英文) (1) 美國密西根州密德蘭市·布寧林210號 210 Burning Bush, Midland, MI 48642, USA (2) 美國密西根州密德蘭市•淺灣圓環5215號 5215 Shoal Creek Circle, Midland, MI 48642, USA (3) 美國德州傑克森湖·越橘道211號 211 Huckleberry Drive,Lake Jackson,TX 77566, USA (4) 美國M傑克森湖•金盞草街107號 1
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