WO1997023670A1 - Fibre conjuguee thermosoudable et structure spherique en fibres de ce type a haut module - Google Patents
Fibre conjuguee thermosoudable et structure spherique en fibres de ce type a haut module Download PDFInfo
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- WO1997023670A1 WO1997023670A1 PCT/JP1995/002665 JP9502665W WO9723670A1 WO 1997023670 A1 WO1997023670 A1 WO 1997023670A1 JP 9502665 W JP9502665 W JP 9502665W WO 9723670 A1 WO9723670 A1 WO 9723670A1
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- fiber
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- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—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
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—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
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
- D04H1/43828—Composite fibres sheath-core
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
- D04H1/43832—Composite fibres side-by-side
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—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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- 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
- D04H1/4391—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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- 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
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- 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
- D04H3/14—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
- 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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43838—Ultrafine fibres, e.g. microfibres
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- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
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- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
- Y10T428/2931—Fibers or filaments nonconcentric [e.g., side-by-side or eccentric, etc.]
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- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2973—Particular cross section
Definitions
- the present invention relates to a heat-adhesive conjugate fiber, and more particularly, to minimize the sticking phenomenon between fibers in a process after spinning as much as possible, and has excellent elasticity, compression recovery durability and high air permeability.
- the present invention relates to a high-elasticity heat-adhesive conjugate fiber that can provide a fiber structure having
- the “sticking phenomenon” refers to a phenomenon in which fibers are physically and chemically bonded to each other by fusing, bonding, and fixing. Due to this "sticking phenomenon", the fibers are fused and pressed together, which has an adverse effect on the production and processing of the fibers.
- Japanese Patent Publication No. Sho 60-144 discloses a composite fiber comprising a crystalline thermoplastic elastomer and a crystalline thermoplastic polyester, which comprises a block polyester polyether and a polybutylene terephthalate as main components.
- a highly crimped conjugate fiber which is preferably used for outer garments and underwear, in which a non-elastic polyester is spun into a side-by-side type or an eccentric core-sheath type, has been disclosed.
- Japanese Unexamined Patent Publication No. Hei 3-185116 discloses a high crimping property in which a polyester ether-based elastomer and an inelastic polyester mainly composed of polyethylene terephthalate are compound-spun into a side-by-side type or a core-sheath type. There is disclosed a heat-adhesive conjugate fiber that can be suitably used to produce a stretchable nonwoven fabric that is easy to force open.
- Japanese Unexamined Patent Publication (Kokai) No. 3-222016 discloses a spun yarn in which a polyester elastomer is disposed in a sheath component and an inelastic polyester is disposed in a core component, thereby improving card passing properties and spinning properties.
- a polyester elastomer is disposed in a sheath component and an inelastic polyester is disposed in a core component, thereby improving card passing properties and spinning properties.
- Useful substantially concentric sheath-sheathed thermoadhesive conjugate fibers have been proposed.
- the cross-sections of the various heat-adhesive conjugate fibers disclosed in the prior art listed above are literally of the side-by-side type and the eccentric core-sheath type.
- the area ratio between the thermoplastic elastomer and the inelastic polyester is compounded in the range of 20/80 to 80/20.
- Composite spinning with an elastomer that is large but has excellent elastic properties and contains a large amount of polyether components is placed in the core component, and an elastomer that has low sticking properties but has poor elastic properties and has a small amount of polyether components is placed in the sheath component It has been proposed to. However, such a material does not provide a practical level of anti-sticking effect.
- the use of the conjugate fiber is a non-woven material useful for pulp material, interlining, sapo, stretch tape, etc. is there.
- the overall performance of the conventional heat-bonded conjugate fiber shown in Fig. 2 (a) to (c), ie, the anti-sticking property, the boundary between the elastomer and the polyester polymer Table 1 shows the surface adhesive strength, the original thermal adhesiveness, and the crimp elasticity.
- Double ⁇ ⁇ fiber (a) Same (b) Same (c) Manufactured 1) Yarn collecting property at the time of yarn Good Bad Deficiency Tsumugi 2) Thread breakage during drawing Small Many Variety 3) Indentation crimper discharge property Good Bad Bad
- the conjugate fiber (c) is excellent in four requirements out of the five required properties of the conjugate fiber (corresponding to 4) to 8) in the table, and at first glance, like an ideal fiber. I can see.
- the "small" or poor anti-stick properties of this fiber, as described below, have a fatal disadvantage to the industrial manufacturing process and the quality of the resulting product.
- the conjugate fiber is first collected as an undrawn raw yarn in a winder or a raw tow can, but is not sufficiently cooled, and when the single fibers are bundled together, an agglomeration occurs due to an elastomer. Even in the state of being wound up and stored, there is a problem that the fibers adhere to each other, forming a hard string, and the subtows are firmly adhered to each other, making it impossible to unwind from the winder.
- thermo-adhesive conjugate fiber in which a crystalline thermoplastic elastomer is disposed as a component, and the handling properties of the fiber, the process characteristics, and even the original thermo-adhesive performance are improved.
- Another object of the present invention is to provide a cushioning material having excellent blowing properties, excellent bulkiness, soft texture, high elasticity, and excellent compression recovery durability. To provide a heat-adhesive composite fiber.
- the above object is to arrange the elastomer component in a crescent shape in the cross section of the heat-adhesive conjugate fiber, and to specify the geometric dimension at that time as shown below. At this time, it was found that the desired composite fiber was obtained.
- the cross section and surface of the fiber are specified by the following requirements (1) to (4). Requirements
- the elastomer (E) is arranged in a crescent shape formed by two arcs having different radii of curvature, and has a dog-like curve with a radius of curvature (where r forms part of the outer peripheral line). Being;
- the polyester (P) is joined to the elastomer along the curve (r 2 ) with the smaller radius of curvature of the two curves forming the crescent shape in the cross section of the fiber.
- the curve with the larger radius (r ⁇ ) forms a part of the fiber surface in an arc shape so that its rim R is in the range of 25 to 49% and the outer circumference;
- the circumference R is defined as follows.
- the radius is (r ⁇ ) in Fig. 1.)
- the radius of curvature C r which is the ratio (i ⁇ Zr) of the radius of curvature ( ⁇ ⁇ ) to the radius of curvature (r 2 ), is more than 1 and less than 2;
- the curvature ratio C of the curve of the radius of curvature (r 2 ) is in the range of 1.1 to 2.5;
- the thickness ratio of the elastomer (E) to the polyester (P) is in the range of 1.2 to 3;
- FIG. 1 is a schematic diagram showing a fiber cross section of the heat-adhesive conjugate fiber of the present invention.
- FIGS. 2 (a), (b) and (c) are schematic diagrams each showing a cross section of a conventional heat-adhesive bicomponent fiber.
- FIG. 3 is a schematic view showing a longitudinal section of a conjugate spinneret for producing the heat-adhesive conjugate fiber of the present invention.
- FIG. 1 shows an example (here, a perfect circle) of a cross section of the heat-adhesive conjugate fiber that has solved the problem of the present invention.
- E indicates a crystalline thermoplastic elastomer
- P indicates a crystalline inelastic polyester.
- the E component is arranged in a crescent shape formed by two arcs of different radii of curvature, (r ⁇ ) and (r 2 ).
- the outer line (1 ⁇ ) is a circular arc with a radius of curvature (r ⁇ ) and constitutes a part of the fiber cross-section as it is, while the P component forms two crescent-shaped curves in the fiber cross-section. It joins the elastomer along the curve (r 2 ) with the smaller radius of curvature.
- the E component since the E component is soft, it can be cut into the rotating garnet wire used for fiber opening and blending, or it can be scratched, resulting in poor permeability and making long-term production difficult. It becomes difficult to be.
- the curvature radius ratio Cr which is the ratio of the radius of curvature (r ⁇ ) to (r 2 ) ⁇ (r 1 ) / (r J ⁇ ), must be 1 or more dog.
- the interface between the E component and the P component, which is the joining line, is easily separated, and once separated, the adhesive strength between fibers is significantly reduced, and the three-dimensional crimping ability is reduced.
- the expression of shrinkage becomes small, which is not preferable.
- the crimp elastic modulus of the conjugate fiber is reduced, which causes troubles such as poor fiber opening in the cotton-opening process, frequent winding of the card cylinder, occurrence of card web spots, and occurrence of knives.
- the polymers are liable to peel off from each other, and the appearance of crimps is reduced, and In this case, the occurrence of crimping is reduced, and it becomes difficult to form flexible heat-fixed points involving the inelastic crimped short fibers.
- the value of C exceeds 2.5, crimping becomes too large, crimping due to heat treatment is extremely likely to occur, and the bulk of the fibrous structure is reduced, and the texture has a feeling of “goro mouth”. It is not preferable because it comes out.
- the "roughing" feeling is an unpleasant touch when touching the surface of the fibrous structure, as if there were small and hard foreign substances in the structure.
- the melting point of the P component is 10 to 190 ° C higher than the melting point of the E component.
- the melting point of the P component is 10 to 190 ° C higher than the melting point of the E component.
- the melting point of the P component is 10 to 190 ° C higher than the melting point of the E component.
- the E component is subjected to a heat treatment at a temperature equal to or higher than the melting point of the E component and lower than the melting point of the P component to be thermally melted. It can maintain the adhesion point of, maintain the bonding strength at a high level, and improve the elasticity and durability.
- the P component is not particularly limited as long as it is a polyester.
- ordinary polyethylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate, polytetramethylene terephthalate, polytetraethylene It is a polymer composed of 1,4-dimethylcyclohexane terephthalate, polybivalolactone or a copolymer ester thereof, but polybutylene terephthalate, which is hardly subject to distortion because it is used for repeated application of strain, is preferable.
- the hard segment of the elastomer used for the fusion component of the conjugate fiber is a polybutylene-based one, it is good without any problem such as peeling.
- the melting point of the P component is preferably in the range of 110 to 290 ° C.
- the melting point of the component E is suitably in the range of 100 to 220 ° C. If the temperature is lower than 100 ° C., even if the fiber is spun so as to satisfy the requirements of the above-mentioned items (1) to (4), sticking of fibers during spinning may not be completely prevented. In addition, when the composite fibers are stacked in multiple tiers of bales, for example, in a warehouse without a tone control device in summer, there is a concern that the fibers may stick together. When the temperature exceeds 220 ° C, the upper limit of the stable processing temperature of the heat treatment machine is full, and uneven adhesion is partially generated, which causes unevenness of hardness, which is not preferable.
- the melting point of the component (E) is more preferably in the range of 130 to 180 ° C. from the viewpoints of prevention of sticking and stability in heat treatment.
- a polyurethane-based elastomer or a crystalline polyester-based elastomer is preferable from the viewpoints of spinning aptitude and physical properties.
- Polyurethane-based elastomers include low-melting-point polyols having a molecular weight of about 500 to 600, such as dihydroxy polyether, dihydroxy polyester, dihydroxy polycarbonate, and dihydroxy polyether. Stemamide, etc., and an organic diisocyanate having a molecular weight of 500 or less, for example, P, P-diphenylmethane diisocyanate, tricine diisocyanate, isophorone diisocyanate, hydrogenated diphenylmethane diisocyanate , Xylylene diisocyanate, 2,6-diisocyanate methyl carboxylate, hexamethylene diisocyanate, etc., and a chain extender having a molecular weight of 500 or less, for example, glycol, amino alcohol or triol.
- a chain extender having a molecular weight of 500 or less, for example, glycol, amino alcohol or triol.
- One example is a polymer obtained by the reaction.
- a particularly preferred polyol is polytetramethylene glycol or a polyprolactone.
- P organic diisocyanate
- p'-diphenylmethane diisocyanate is preferred.
- chain extenders p, p'-bishydroxyethoxybenzene and 1,4-butanediol are preferred.
- crystalline polyester-based elastomer a polyetherester block copolymer obtained by copolymerizing a thermoplastic polyester as a hard segment and a poly (alkylene oxide) glycol as a soft segment is used.
- Typical are terephthalic acid, isophthalic acid, phthalic acid, naphthalene-1,2,6-dicarboxylic acid, naphthylene-1,2,7-dicarboxylic acid, diphenyl 4,4'-dicarboxylic acid, diphenoxyethanedicarboxylic acid Acid, aromatic dicarboxylic acid such as sodium 3-sulfoisophthalate, alicyclic dicarboxylic acid such as 1,4-cyclohexanedicarboxylic acid, succinic acid, oxalic acid, adibic acid, sebacic acid, dodecanediic acid, dimer Dica selected from aliphatic dicarboxylic acids such as acids or their ester-forming derivatives At least one of boric acid and an aliphatic diol such as 1,4-butanediol, diethylene glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol, hexamethylene glyco
- Polyethylene glycol poly (1,2-propylene oxide) glycol, poly (1,3-propylene oxide) glycol, poly (tetra) having at least one kind and an average molecular weight of about 300 to 500
- a ternary component composed of at least one of poly (alkylene oxide) glycols such as glycol, a copolymer of ethylene oxide and propylene oxide, and a copolymer of ethylene oxide and tetrahydrofuran. It is preferably a copolymer.
- a polyester ester block copolymer using polybutylene terephthalate as a hard segment and polyoxytetramethylene glycol as a soft segment is particularly preferred.
- the polyester portion constituting the hard segment has a copolymerization ratio (expressed in mol% based on the total acid components) of the copolymer based on the total acid components of the copolymer, which is 40 to 1%. Those containing 100 mol% and 0 to 50 mol% of isophthalic acid are used.
- Acid components other than terephthalic acid and isophthalic acid include fluoric acid, adibic acid, sebacic acid, azelaic acid, dodecanedioic acid, 2,6-naphthalenedicarboxylic acid, 5-sodium sulfoisophthalic acid, and 1,4-cyclohexane Hexanedicarboxylic acid and the like are preferably used for obtaining a predetermined melting point and for improving the quality such as elasticity and durability.
- those containing 50 to 90 mol% of terephthalic acid and 10 to 35 mol% of isophthalic acid are more preferably used.
- the main component of the glycol component in the polyester portion is preferably 1,4-butanediol.
- “main” means that at least 80 mol% of all glycol components is 1,4-butanediol, and within 20 mol% or less, other types of glycol components are copolymerized.
- the copolymer glycol components preferably used include ethylene glycol, trimethylene glycol, 1,5-pentylenediol, 1,6-hexanediol, diethylene glycol, 1,4-cyclohexanediol, 1,4 -Cyclohexanedimethanol etc.
- the polyetherester block copolymer contains 5 to 80% by weight of a poly (alkylene oxide) glycol component having an average molecular weight of 300 to 500,000, and an average molecular weight of 800 to 4%.
- the content of the glycol component be from 30 to 70% by weight.
- the average molecular weight is less than 300, the blockability of the obtained block copolymer decreases and the elastic recovery performance becomes insufficient.
- poly (alkylene) is used. Oxide) It is not preferable because the copolymerizability of the glycol component is reduced and the elastic recovery performance becomes insufficient.
- the copolymerization amount of the glycol component is less than 5% by weight, even if the conjugate fiber is subjected to heat bonding treatment to form a cushion material or the like, a material having good elasticity properties which is the object of the present invention can be obtained. On the other hand, if it exceeds 80% by weight of the glycol component, the mechanical properties, heat resistance and light resistance of the obtained block copolymer are undesirably reduced.
- the poly (alkylene oxide) glycol preferably used is preferably a homopolymer of polyethylene glycol, poly (propylene oxide) glycol, or poly (tetramethylene oxide) glycol.
- a random copolymer or a block copolymer in which two or more of the repeating carriers constituting the homopolymer are copolymerized in a random or block manner may be used, and the homopolymer or the copolymer may be used.
- a mixed polymer in which two or more polymers are mixed may be used.
- Such a polyetherester block copolymer can be obtained by using a well-known method for producing a copolymerized polyester.
- each of the E component and the P component is usually dried until the water content becomes 0.1% or less, and then subjected to spinning.
- a method for producing a fiber by combining a crystalline thermoplastic elastomer and an inelastic polyester can be performed by a well-known spinning apparatus and method.
- the composite fiber of the present invention can be obtained by using, for example, a composite die as shown in FIG.
- the composite base in Fig. 3 The P component is caused to flow in a molten state from the pins 3 provided on the upper plate 1, the E component is caused to flow between the upper plate 1 and the lower plate in a molten state, and is discharged from the nozzle 4 provided on the lower plate 2 in a combined manner.
- the composite fiber yarn cooled and solidified after discharging the polymer can be taken out by applying a spinning oil, or can be subsequently drawn 2 to 5 times to be taken out.
- the P component has a higher viscosity (ie, is hard), and the E component has a lower melt viscosity (ie, the same). , Soft).
- the molten P component flowing from the bin 3 flows in the vertical direction as it is without being affected by the discharge pressure of the molten E component. Contact with. Further, the fibers are finally discharged from the nozzles 4 along the lower plate 2 to form a fiber cross section as shown in FIG.
- Amorphous polyester ⁇ polyether block copolymer as a spinning oil agent is interposed between single fibers before and after bundling immediately after spinning, as a measure to prevent sticking. There is an effect.
- the stretchability of the conjugate fiber is improved, and when the fiber is formed by passing through the card, the fiber is originally soft and the cardability is remarkably inferior, but the weight of the amorphous polyetherester block copolymer is reduced.
- the amount is provided in the range of 0.02 to 5% by weight based on the weight of the fiber, the smoothness of the fiber is increased, and the wettability of the molten polymer during thermal bonding is also improved. The elasticity and durability of the structure are greatly improved.
- the applied amount based on the fiber weight of the amorphous polyester ester block copolymer is less than 0.02% by weight, it is necessary to obtain the effects of preventing sticking, improving cardability, and improving adhesive force. Insufficient.
- the adhesion amount exceeds 5% by weight, the amorphous polyester polyester is increased more. Even if the amount of adhering copolymer is increased, effects such as prevention of sticking, improvement of cardability, and improvement of thermal adhesive force cannot be obtained. It is not preferable because a uniform fibrous structure is not obtained and unevenness of hardness is generated.
- the amorphous polyetherester-based block copolymer is composed of terephthalic acid and / or isophthalic acid and di- or meta-sodium sulfoisophthalic acid or a lower alkyl ester thereof, a lower alkylene glycol and a poly (alkylene glycol). It is a polyetherester block copolymer composed of alkylene glycol and / or polyalkylene glycol monoether.
- terephthalic acid-alkylene glycol-polyalkylene glycol terephthalic acid-isofuric acid-alkylene glycol-polyalkylene glycol, terephthalic acid-alkylene glycol-polyalkylene glycol monoether, terephthalic acid-monoalkyl ⁇ Polyalkylene glycol monosodium acid, polyalkylene glycol monoalkylene glycol, terephthalic acid monomethasium sulfoisophthalic acid-alkylene glycol monopolyalkylene glycol, terephthalic acid-isophthalic acid —Monosodium sulfosulfoisophthalate-alkylene glycol—Polyalkylene glycols and the like, terephthalate units and isophthalate units and / or metasodium sulfoisophthalate units Is 1 0 0 : 0 to 50: 50 (molar ratio) is preferred to prevent adhe
- the ratio of the terephthalate unit to the isophthalate unit and / or the medium sodium sulfoisophthalate unit should be 90:10. ⁇ 50: 50 (molar ratio) is particularly preferred.
- the ratio of the terephthalate unit and the isophthalate unit or / and the medium disulfoisophthalate unit to the polyalkylene glycol unit is usually 2: 1 to 151 ( (Molar ratio) to prevent the occurrence of adhesion between single fibers during spinning and to improve the bonding strength of fibers.
- 3: 1 to 8: 1 (molar ratio) is particularly preferable.
- the alkylene glycol used for producing the amorphous block copolymer is an alkylene glycol having 2 to 10 carbon atoms, such as ethylene glycol, propylene glycol, tetramethylene glycol, decamethylene glycol and the like.
- the polyalkylene glycol generally has an average molecular weight of 600 to 12, 000, preferably polyethylene glycol having an average molecular weight of 1, 000 to 50,000, and a polyethylene glycol / polyvinylene glycol copolymer.
- polyethylene glycol, polytetramethylene glycol copolymer, polypropylene glycol and the like monomethyl ethers such as polyethylene glycol and polypropylene glycol, monoethyl ether, monophenyl ether and the like are preferable.
- polyethylene glycol monoethers are particularly preferred from the viewpoint of improving the antifouling property between the single fibers.
- the average molecular weight of the amorphous block copolymer depends on the molecular weight of the polyalkylene glycol used, it is usually from 2,000 to 20,000, preferably from 3,000 to 13, 0 0 0. If the average molecular weight is less than 2,000, stretchability, adhesion prevention, and thermal adhesive strength are insufficient. If the average molecular weight is more than 2,000, stretchability and thermal adhesive strength are reduced. Absent.
- the polyalkylene glycol used to control the molecular weight at the time of polycondensation of the block copolymer is one having one terminal group blocked, such as monomethyl ether, monoethyl ether, or monophenyl ether. preferable.
- the amorphous block copolymer may be an alkali metal salt of polyoxyethylene alkylphenol phosphate, an alkali metal of polyoxyethylene alkylphenyl tersulfate, and / or an ammonium salt thereof. It is dispersed using a surfactant such as a salt or an alkanolamine salt.
- the agglomeration initiation temperature of the amorphous block copolymer dispersion is preferably from 30 to 100 ° C, and more preferably from 60 to 90 ° C.
- the amount of the amorphous block copolymer to be used is preferably from 0.02 to 5.0% by weight, particularly preferably from 0.1 to 3.0% by weight, based on the weight of the conjugate fiber. % By weight.
- the heat-adhesive conjugate fiber of the present invention preferably has a fineness in the range of 0.5 to 200 denier. If the denier is less than 0.5 denier, the adhesive strength is insufficient when heat bonding treatment is performed as a fiber structure, and sufficient elasticity and durability cannot be obtained. If the denier exceeds 200 denier, the fiber and the like are cooled. As a result, it becomes difficult to prevent the single fibers from sticking together even if the cross-sectional shape is specified as in the present invention.
- the composite fiber of the present invention may be mechanically crimped by a press crimper after stretching, but the number of crimps is 5 to 25 inches, and the degree of crimp is 5 to 30%. Is preferred. If the number of crimps is less than 5 knots and the degree of crimp is less than 5%, the force web is cut off at the time of force and the bulk of the obtained fiber structure is unpreferably reduced.
- the number of crimps is 25 Z inches, and the degree of crimp exceeds 30%, the passability of the card machine becomes poor, and web spots and neps frequently occur, which is not preferable. It is particularly preferable that the number of crimps is in the range of 8 to 20 inches and the degree of crimp is in the range of 6 to 18%.
- the cut length of the short fibers at that time is preferably in the range of 10 to 100 mm, particularly preferably in the range of 15 to 95 mm.
- the above-mentioned heat-adhesive conjugate fiber can be thermoformed into a nonwoven fabric or a sheet by itself, irrespective of the shape of the long fiber or the short fiber, but is most preferably inelastic.
- This composite fiber is dispersed and mixed in the form of crimped short fibers in a fiber aggregate having a polyester-based crimped short fiber as a matrix, and thermoformed into a desired shape.
- This embodiment is typically disclosed in WO 91/19032 listed at the outset.
- the inelastic polyester-based crimped staple fibers serving as a matrix may be any inelastic polyester-based crimped staple fibers having a helical or omega crimped shape or partially having such a shape.
- Inelastic polyester-based crimped short fibers include ordinary polyethylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate, and polytetramethylene terephthalate.
- Crimped short fibers consisting of furanate, poly-1,4-dimethylcyclohexane terephthalate, polybivalolactone or their copolymer esters, or a blend of these crimped short fibers, or two or more of the above polymers
- Examples include composite short fibers that exhibit a helical crimp with side-by-side fiber cross-sections in which the degree of polymerization of the polymer and the copolymerization component are varied, and are symmetrical.
- anisotropic cooling in which one side of the fiber is strongly cooled at the time of spinning.
- the cross-sectional shape of these short fibers may be circular, flat, irregular or hollow.
- the bulkiness (JISL-107) of a single material is 35 cm 3 / ⁇ or more under a load of 0 .S gZ cm 2 and 1 20 cm 3 Zg or less, and 1 under a load of 10 gZ cm 2. It is preferably 5 cm 3 / g or more and 60 cm 3 / g or less, more preferably 40 cm 3 or more and 100 cm 3 Zg or less, and 20 c. It must be less than 0 cm 3 Zg. If these bulkiness is low, the problem that the obtained fiber molded cushion material has low elasticity and compression rebound is remarkable.
- the fineness of the crimped short fibers is preferably in the range of 1 to 100 denier, more preferably 2 to 50 denier. If the fineness is less than 1 denier, the bulkiness will not be exhibited, and when it is blown into the side ground by air etc., it will be compressed and it will be difficult to blow it uniformly, and the cushioning material obtained will have poor cushioning properties and repulsion force It will stick. On the other hand, if it is larger than 100 denier, the fiber is difficult to bend and it is difficult to form a structure, and the number of constituents of the obtained fiber structure becomes too small, and the texture becomes hard. Further, the cut length is preferably in the range of 10 to 10 O mm, and particularly preferably in the range of 15 to 95 mm.
- the heat-adhesive conjugate fiber of the present invention is useful for obtaining a highly elastic fiber sphere.
- the heat-adhesive conjugate fiber of the present invention and a non-elastic matrix It is preferable that the mixing ratio with the conductive polyester crimped short fiber is in the range of 5 to 49:95 to 5 by weight ratio (%). If the mixing ratio of the heat-adhesive conjugate fiber is too high, the number of heat fixation points formed in the fiber sphere is too large, and the fiber sphere becomes too hard to be used as a cushioning material. There's a problem. Conversely, if the mixing ratio of the composite fiber is too low, the number of heat fixing points formed in the fiber sphere is too small, and the shape stability of the fiber sphere is poor.
- the surface of the inelastic polyester-based crimped staple fibers is treated with a smoothing agent and a slippery processing agent.
- a smoothing agent and a slippery processing agent By making the surface slippery, it becomes easier to form fiber spheres due to air turbulence. Further, the texture of the obtained fiber spherical body is soft, so that the texture of feathers and feathers can be easily obtained.
- Any of these treating agents may be used as long as they become slippery by drying or curing after the agent is applied.For example, coating with a segmented polymer of polyethylene terephthalate and polyethylene oxide Thus, the surface friction can be reduced.
- a treatment agent containing silicone resin as the main component such as dimethylpolysiloxane, epoxy-modified polysiloxane, amino acid-modified polysiloxane, methylhydridoenepolysiloxane, or methoxypolysiloxane, is applied at any stage as a silicone resin leveling agent. It is also preferable to consider this from the viewpoint of greatly improving smoothness.
- the suitable amount of the smoothing agent is usually 0.1 to 0.3% by weight.
- adding an antistatic agent to the silicone resin or applying an antistatic agent treatment after the silicone resin treatment causes friction with air when the fibers are spheroidized and high-temperature air turbulence during the fusion treatment. In many cases, it is necessary to prevent static electricity in processing or the like.
- Such a smoothing treatment generally hinders the thermal adhesion between the heat-adhesive conjugate fiber and the inelastic polyester-based crimped staple fiber.
- the mixing ratio of the non-elastic polyester short fibers is preferably from 95 to 51%, more preferably from 90 to 55%. If the mixing ratio is too high, the amount of the heat-bonded conjugate fiber will be small, so that the heat fixation point will be small, so that the resilience will be low and the resulting fiber spherical body will have poor form stability. On the other hand, if the mixing ratio is too low, the number of heat fixation points is too large, and the fibrous spheroids are too hard, which is problematic for use as a cushioning material. In addition, as will be described later, the heat treatment causes the inelastic polyester-based crimped synthetic short fibers to form heat fixation points while exhibiting crimping.
- the surface of the fiber spheroid is inelastic. It is preferable that many fluffs of short fibers and inelastic short fibers are present.
- the fluff of the short fibers contributes to the smoothness of the surface of the fiber sphere, and makes the blowing performance of the fiber sphere and the feel of the cushion after the fiber sphere have been blown very good.
- the particularly large deformation means, for example, a deformation in which the thickness becomes 50% based on the thickness of the original filling).
- the smooth feel caused by the slipping of the adjacent fibers and the feel that the elasticity and frictional force of the heat fixing point formed by the elastomer are increased are added, so that it is possible to produce a batting with a good texture. it can.
- a non-elastic polyester-based crimped short fiber and the heat-adhesive conjugate short fiber of the present invention are mixed at a predetermined cotton mixing ratio.
- the card is provided with a plurality of rollers with a garnet wire stretched over the surface.
- the mixed cotton mass is blown into a blower, and a turbulent stirring process is performed for a predetermined period of time to separate and separate the individual short fibers while retaining them in a vortex of air to form a spherical body.
- the bulky cotton swollen lump in which the inelastic polyester-based crimped staple fibers and the heat-adhesive conjugate fibers are uniformly mixed and entangled is subjected to air and mechanical force, particularly due to the characteristics of the conjugate staple fibers.
- the crimp progresses and the spheres are formed quickly.
- thermoplastic elastomer having a low melting point of the conjugate fiber and lower than the melting point of the polymer constituting the polyester crimped short fiber, thereby forming a heat fixing point in the fiber spherical body.
- a fiber sphere having excellent texture, elasticity and durability can be obtained.
- the crimping ratio also advances by performing heat treatment, so that the effect of the spheroidization is further enhanced.
- any method may be used to produce the high-elasticity spherical body of the present invention, as long as the method facilitates the spheroidization of the fiber by causing such an effect.
- the surface of the inelastic polyester-based short fiber has smoothness and is more slippery, it becomes easier to form a spheroid.
- hot air is used to simultaneously promote the three steps of fiber spheroidization, crimp development, and melting of the low-melting polymer to cause fusion.
- the crimping property of the inelastic polyester-based crimped staple fiber is lower than the crimping property of the conjugate fiber, the inelastic polyester-based crimped staple fiber is exposed on the surface of the fiber sphere, and This inelastic polyester short fiber is smooth
- An embodiment having a surface is preferable because the fibrous spherical body exhibits smoothness as a whole, is easily blown, and the texture of the blown cushion is soft and good.
- the sample was dissolved in orthochlorophenol solvent at various concentrations [c] (g / 100 ml), and the dissolved solution was measured at 35 ° C [ ⁇ ? Sp (specific viscosity) Z c] is extrapolated to zero concentration [7?]
- heating rate was 20.
- the melting beak temperature was determined by measuring the CZ content. If this melting beak cannot be clearly measured, use a micro-melting point measuring device (manufactured by Yanagimoto Seisakusho), insert about 3 g of the samble between two cover glasses, and gently press down with a bin set. While heating, the temperature was raised at a rate of 20 ° C / min, and the thermal change of the polymer was observed. The temperature at which the polymer softened and began to flow (softening point) was defined as the melting point.
- the raw yarn is temporarily stored in a can, transported to the next creel process, a large number of raw yarns are bundled, and supplied to a drawing machine. Based on the above, the amount of raw yarn cans of other composite fibers was compared.
- the drawing machine was temporarily stopped during drawing of the original yarn, the number of single yarn breaks in the drawing toe in the second warm water bath was checked, and the number of single yarn breaks in Comparative Example 2 was set to 100%. Comparison of the number of broken yarns of the composite fibers
- Push-in crimper discharge The stretched tow was supplied to a press-type crimper, and after crimping, the state of discharge of the tow from the crimper box was visually determined. Extremely good is when the tow is naturally discharged from the crimper box without any problem, and good is when the tow is discharged from the crimper box without clogging and there is no hindrance to operation, but the discharge is slightly irregular. did. A case where the toe was clogged and the crimper was not discharged from one box was determined to be defective.
- the weight ratio of the heat-adhesive conjugate fiber to the hollow polyethylene terephthalate short fiber having a fineness of 14 denier, a fiber length of 64 mm, and a number of crimps of 9 / inch obtained by an ordinary method is 30%.
- the measured value in the case where the composite fiber of Comparative Example 2 was used was set to 100%, and the value compared with the case of other composite fibers based on this was shown.
- the crimp elastic modulus of the conjugate fiber was measured according to JISL 1 074, and the value of Comparative Example 2 was set as 100%, and the value was compared with that of other conjugate fibers.
- JISL 1 074 The crimp elastic modulus of the conjugate fiber was measured according to JISL 1 074, and the value of Comparative Example 2 was set as 100%, and the value was compared with that of other conjugate fibers.
- the fiber supply is stopped during the steady state operation, and the weight of the fiber when the fiber is completely discharged from the card machine after the supply is stopped is measured.
- the measured value of the conjugate fiber of Comparative Example 2 was set to 100%, and the value compared with other conjugate fibers was shown based on this value.
- a composite fiber is passed through a card machine, and the condition of the web at the exit of the card machine is visually judged. Extremely good when there were no web spots and nets, good when there was little, and bad when there were many.
- the mixed cotton web for the above-mentioned measurement of the thermal adhesion between fibers was laminated, and was heated in a flat plate at a temperature of 20 (TC for 10 minutes in a heat circulating drier to obtain a density 0 adjusted to a flat plate.
- a fibrous structure with a thickness of 5 g / cm 3 and a thickness of 5 cm was prepared, compressed 1 cm with a cylindrical load having a flat lower surface with a cross section of 20 cm 2 , and the stress (initial stress) was measured. This was defined as repulsion, and the measured value when the conjugate fiber of Comparative Example 2 was used was set at 100%. Based on this value, a value compared with other conjugate fibers was shown.
- the sample was compressed for 10 seconds with a load of 800 g / cm 2 , then unloaded, and left standing for 5 seconds was repeated 360 times. After 24 hours, the compressive stress was measured again.
- the ratio of the change in stress after repeated compression to the initial stress is taken as the durability of the fibrous structure, and the value when the conjugate fiber of Comparative Example 2 is used is taken as 100%. The indicated value was shown.
- the surface of the fibrous structure prepared for the measurement of rebound and durability was touched with a hand, and unevenness of hardness was sensory evaluated. A case where there was no unevenness in the surface hardness was regarded as good, and a case where there were many irregularities was regarded as poor.
- An acid component obtained by mixing terephthalic acid and isophthalic acid with 85Z15 (mol%) is polymerized with butylene glycol, and 45% (wt%) of the obtained polybutylene terephthalate is further added to polybutylene glycol (molecular weight: 20%). 00) 55% (% by weight) under heat to obtain a block copolymerized polyether polyester elastomer.
- the inherent viscosity of this thermoplastic elastomer was 1.3 and the melting point was 172 ° C.
- thermoplastic elastomer and polybutylene terephthalate were combined as shown in FIG. 3 so that the area ratio became 50/50 so that the elastomer was arranged in the crescent-shaped portion of FIG.
- a spinneret 260 holes
- a potassium fiber of lithium uryl phosphate as a spinning oil agent was added at 0.05% by weight to the fiber and spun to obtain a conjugate fiber of Example 1.
- the fiber cross-section is as shown in (a), and in (a) the composite is a side-by-side type, and in (b) the elastomer is a sheath component
- the elastomer is arranged so as to be an eccentric core-sheath type sheath component, and composite spinning is performed using a known die, and these composite fibers are respectively subjected to Comparative Examples 1, 2, and 3. It was set to 3.
- These unstretched fibers are stretched in a two-stage hot water bath at a temperature of 6 (TC; 90 ° C, a draw ratio of 2.5 and 1.2 times), and then a potassium salt of lauryl phosphate is applied. After mechanical crimping was performed with a press-type crimper, it was dried at a temperature of 60 ° C and cut into 64 mm.
- the physical properties of the obtained fiber are 9 denier in thickness and the adhesion rate of oil is 0.2 %.
- the conjugate fiber of Example 1 had a fiber sectional circumference of 35%, a curvature radius ratio Cr of 1.2, a curvature ratio C of 1.73, and a wall thickness ratio D of 2.1.
- the table in Table 1 summarizes the properties of these composite fibers in terms of cotton-forming conjugate fiber, cotton-opening and carding properties, and fiber structure properties.
- Comparative Examples 2 and 3 there are many stickies, so that the raw yarn can be collected and the extended yarn was broken frequently, and the discharging property from the crimper box was poor.However, in Example 1, Comparative Examples 1 and 3 Were good.
- Comparative Examples 2 and 3 the effect of preventing sticking of the yarn was small, and a large amount of sticking fiber was generated, so that extremely thick fiber was formed. At this time, the number of constituent fibers of the composite fiber is practically extremely small, and the adhesive strength as a fiber structure is low. On the other hand, in Comparative Example 1 and Example 1, there is little sticking of the yarn, and the composite fiber is dispersed relatively uniformly inside the fiber structure, so that the adhesive strength is increased. Comparing Comparative Example 1 with Example 1, Example 1 showed higher adhesive strength and was better.
- Comparative Example 1 Regarding the crimping characteristics of the conjugate fiber, in Comparative Example 1, it is presumed that the polyester (P) component has a half-moon shape and a nearly flat cross-sectional shape, but the crimp modulus is low. This has a bad influence on the opening property and force in the cotton opening process as described later. Comparative Examples 2 and 3 and Example 1 show almost the same level of crimp modulus.
- Comparative Example 2 the composite fiber had no ability to exhibit three-dimensional crimping.
- Comparative Examples 1 and 2 and Example 1 have crimp development performance due to cross-sectional anisotropy, but Comparative Example 3 has low three-dimensional crimp development performance due to the influence of agglutination.
- Comparative Example 1 and Example 1 have a high level of three-dimensional crimp development ability because they have little sticking and have a cross-sectional feature.
- Comparative Examples 2 and 3 since there are many sticky fibers, it is difficult to open the cotton, and many windings around the cylinder of the card machine occur. Not preferred.
- Comparative Example 1 since the crimp elastic modulus of the conjugate fiber was low, the fiber was in a bundle form and it was difficult to spread the fiber. It is not good because it is a lot.
- Example 1 the amount of glued fibers was small, the enclosing property at the time of opening the cotton was good, the winding of the cylinder of the card machine was small, the unevenness of the web and the net were small, and good.
- Example 1 both the cotton-opening property and the carding property were good, the adhesive strength at the time of heat treatment was high, and the simultaneous three-dimensional crimping was more developed, so both the repulsion and the durability were good, and there was little unevenness of hardness. A good fiber structure was obtained.
- Example 1 Except that the spinning oil and drawing oil of Example 1 were changed from lauryl phosphate potassium salt to a dispersion of a polyester polyether block copolymer, a composite fiber was obtained in the same manner as in Example 1 to obtain various properties. An evaluation was performed.
- An aqueous dispersion of 10% of the active ingredient in which mono-tersulfate monopotassium salt was blended at a ratio of 80:20 was used.
- Example 1 Although the spinning was bundled, the glue was slightly agglutinated, but there was no agglutination, and better characteristics were obtained.
- the block copolymer is dispersed as fine particles, and intervenes between the fibers before or during bundle of the yarn during spinning. It is presumed to play the role of a mouthpiece and to reduce friction between fibers. Also, since the block copolymer is dispersed as fine particles in water, even when the conjugate fiber is heated to a high temperature at which it can be stretched, no sticking phenomenon is observed, and this contributes to the improvement of stretchability. It is inferred. The results are shown in Table 2.
- Example 1 the same operation as in Example 1 was performed except that the polymer discharge ratio and the spinneret specifications were changed to produce heat-bondable fibers having different fiber cross-sectional shapes as shown in Table 3 in Table 3. The performance was evaluated.
- Example 1 the same operation as in Example 1 was performed except that the polymer discharge ratio and the spinneret specifications were changed to produce heat-bondable fibers having different fiber cross-sectional shapes as shown in Table 4. Their properties were evaluated.
- Example 2 Using the heat-adhesive conjugate fiber and inelastic polyester crimped staple fiber used in Example 1, 30% of the conjugate fiber was mixed with 70% of the crimp staple fiber based on the weight of the fibrous spherical body. After that, the mixture was passed twice through a roller card to obtain a high-cotton mixed cotton. This bulky cotton was put into an apparatus having a blower connected with a duct and a cotton storage box, and was stirred for 30 seconds by an air flow in the blower to obtain a ball-shaped cotton.
- the spheroidized cotton is transferred into a cotton storage box, and the elastic thermoplastic elastomer is melted while stirring the spheroidized cotton with a weak air flow having a temperature of 195 ° C.
- a thermal fixation point was formed inside the converted cotton, and then room temperature air was sent into the cotton storage box to perform a cooling treatment to obtain a high elastic fiber spherical body.
- Example 9 a dicarboxylic acid component obtained by mixing terephthalic acid and isofluoric acid in a molar ratio of 60:40, based on the total acid components, was replaced by ethylene glycol, instead of the elastic thermoplastic elastomer.
- Low-melting polyester polymer (melting point: 110 ° (intrinsic viscosity: 0. 0), copolymerized from a glycol component mixed with a glycol component in a molar ratio of 85:15, based on the total diol component, and diethylene glycol. Except for using (78), the same operation as in Example 9 was performed to obtain a fibrous spherical body.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Example 7 Example 8 Area ratio (P: E) (%) 50: 50 : 50 25: 75 75: 25 60: 0 30: 70 40: 60 35: 65 Pirate (%) 35 35 47 27 30 45 38 42
- the heat-adhesive conjugate fiber of the present invention contains the crystalline E component as one component, it is inevitably generated during the production of the conjugate fiber, and the handling properties of the fiber, the process characteristics, and even the original adhesiveness are reduced. It eliminates the obstructive sticking phenomenon and achieves coexistence with the interfacial adhesive strength between the polymers, the original adhesive performance and the crimping elasticity.
- Various cushion materials such as furniture, beds, wadding, bedding It can be suitably used as raw cotton for seat cushions, quilting wear batting, sanitary materials, medical non-woven fabrics, clothing fabrics, power pets, vehicle interior materials, and the like.
- the fibrous spherical body using the heat-adhesive conjugate fiber of the present invention as a binder has excellent blowing properties, the obtained cushioning material and stuffing have excellent bulkiness, high elasticity, and a soft texture. It can be suitably used as a padding material such as a cushioning material and a pillow having excellent compression durability.
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DE69528850T DE69528850T2 (de) | 1995-12-25 | 1995-12-25 | Heiss-verschweissbare verbundfaser und daraus hergestellte fasergloboid mit hohem modul |
KR1019970705858A KR100284350B1 (ko) | 1995-12-25 | 1995-12-25 | 열접착성 복합섬유 |
JP52349497A JP3588635B2 (ja) | 1995-12-25 | 1995-12-25 | 熱接着複合繊維及びそれよりなる高弾性繊維球状体 |
PCT/JP1995/002665 WO1997023670A1 (fr) | 1995-12-25 | 1995-12-25 | Fibre conjuguee thermosoudable et structure spherique en fibres de ce type a haut module |
EP95941873A EP0811710B1 (en) | 1995-12-25 | 1995-12-25 | Heat-bondable conjugated fiber and high-modulus fiber globoid made thereof |
US08/692,720 US5677057A (en) | 1995-12-25 | 1996-08-06 | Heat-bonding conjugated fibers and highly elastic fiber balls comprising the same |
US08/897,979 US5858528A (en) | 1995-12-25 | 1997-07-21 | Heat-bonding conjugated fibers and highly elastic fiber balls comprising the same |
KR1020007009323A KR100283792B1 (ko) | 1995-12-25 | 2000-08-23 | 열접착성 복합섬유를 함유하는 고탄성 섬유구상체 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1995/002665 WO1997023670A1 (fr) | 1995-12-25 | 1995-12-25 | Fibre conjuguee thermosoudable et structure spherique en fibres de ce type a haut module |
US08/692,720 US5677057A (en) | 1995-12-25 | 1996-08-06 | Heat-bonding conjugated fibers and highly elastic fiber balls comprising the same |
Publications (1)
Publication Number | Publication Date |
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WO1997023670A1 true WO1997023670A1 (fr) | 1997-07-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1995/002665 WO1997023670A1 (fr) | 1995-12-25 | 1995-12-25 | Fibre conjuguee thermosoudable et structure spherique en fibres de ce type a haut module |
Country Status (3)
Country | Link |
---|---|
US (2) | US5677057A (ja) |
EP (1) | EP0811710B1 (ja) |
WO (1) | WO1997023670A1 (ja) |
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JP2011074505A (ja) * | 2009-09-29 | 2011-04-14 | Teijin Fibers Ltd | 湿式不織布用熱接着性複合繊維 |
JP2011074506A (ja) * | 2009-09-29 | 2011-04-14 | Teijin Fibers Ltd | 湿式不織布用熱接着性複合繊維 |
JP2015155586A (ja) * | 2014-02-21 | 2015-08-27 | ダイワボウホールディングス株式会社 | 粒状綿およびそれを用いた中綿材料、並びにその中綿材料を含む寝装品または衣料品 |
US9701069B2 (en) | 2012-09-21 | 2017-07-11 | Teijin Limited | Method for manufacturing composite material |
WO2023275165A1 (en) | 2021-07-01 | 2023-01-05 | Ikea Supply Ag | A bi-component fiber for cushion members |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011074505A (ja) * | 2009-09-29 | 2011-04-14 | Teijin Fibers Ltd | 湿式不織布用熱接着性複合繊維 |
JP2011074506A (ja) * | 2009-09-29 | 2011-04-14 | Teijin Fibers Ltd | 湿式不織布用熱接着性複合繊維 |
US9701069B2 (en) | 2012-09-21 | 2017-07-11 | Teijin Limited | Method for manufacturing composite material |
JP2015155586A (ja) * | 2014-02-21 | 2015-08-27 | ダイワボウホールディングス株式会社 | 粒状綿およびそれを用いた中綿材料、並びにその中綿材料を含む寝装品または衣料品 |
WO2023275165A1 (en) | 2021-07-01 | 2023-01-05 | Ikea Supply Ag | A bi-component fiber for cushion members |
Also Published As
Publication number | Publication date |
---|---|
EP0811710A4 (en) | 1999-12-01 |
EP0811710B1 (en) | 2002-11-13 |
US5858528A (en) | 1999-01-12 |
EP0811710A1 (en) | 1997-12-10 |
US5677057A (en) | 1997-10-14 |
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