TW554097B - Divisible hollow copolyester fibers, and divided copolyester fibers, woven or knitted fabric, artificial leather and nonwoven fabric comprising same - Google Patents

Abstract

Divisible hollow copolyester fibers having a satisfactory processing property, for example, carding property and capable of being divided by applying a mechanical stress thereto into fibril-like thin fibers, each include a hollow portion surrounded by a shell portion and extending along the longitudinal axes of the hollow fibers, wherein the shell portion is made from a copolyester of an acid component including terephthalic acid and 1 to 6 molar % of a sulfonate group-containing dicarboxylic acid, with a diol component including ethylene glycol; the hollow fibers have (1) thickness of 0.56 to 8.89 d tex (0.5 to 8.0 denier), (2) a hollow ratio of 25/100 or more, (3) a crystallization degree of 20% or more, and (4) a crystal size in (010) plane of 4 nm or more; and the shell portions each have a plurality of cracks intermittently extending along the longitudinal axes of the hollow fibers.

Description

554097 A7 B7 V. Description of the Invention (丨) Background of the Invention 1. Technical Field of the Invention As a whole, the present invention relates to a detachable hollow copolyester fiber, which can be easily applied by applying mechanical stress on the hollow fiber. It is separated into fine copolyester fibers; isolated copolyester fibers prepared from it; and fabrics or knitted fabrics, artificial leather, and non-woven fabrics containing the separated copolyester fibers. In more detail, the present invention relates to detachable hollow copolyester fibers, which can be separated into fine copolyester fibers by applying mechanical stress on the hollow fibers; Copolyester fine fibers; and fabrics or knitted fabrics containing the fine copolyester fibers and having good thermal insulation properties and feel, and artificial leathers and non-woven fabrics containing the fine copolyester fibers and having soft feel. 2. Description of related technologies The demand for ultrafine fibers in the known industry is great, and many attempts have been made to produce ultrafine fibers and the use of ultrafine fibers. For example, it is known to prepare undrawn filaments by melt extruding a polymer through a spinneret having a small diameter spinneret, and drawing the extruded filamentous polymer melt stream at high speed, and by Method for drawing ultra-fine fibers by drawing the undrawn filaments at a high drawing ratio. The disadvantage of this method is that the thickness of the filaments produced is limited to about 0.33 decigrams (0.3 denier) or more, so it is technically difficult to produce ultrafine fibers with a thickness of less than 0.33 decigrams (0.3 denier). Even when the production itself is possible, the productivity of ultrafine fibers is very low, which makes the production cost of ultrafine fibers become the paper standard applicable to China National Standard (CNS) A4 (210X297mm). Please read first

Λ Note I

Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 554097 5. Description of the invention (very high. In the method disclosed in Japanese Examined Patent Publication No. 42 · 19518, ultrafine fibers are obtained by mixing a mixture of two immiscible polymers Spinning, and dissolving and removing one of the two polymers from the resulting mixed polymer fibers in a seed / combined manner. However, the disadvantage of this method is the segment formed from the two immiscible polymers, The interface between them is easy to separate from each other, so the composite fiber produced has a poor passing property when passing through the carding machine, resulting in the fiber thickness being too low and the fiber length being too short and excessively random, making the fiber unusable for specific purposes Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, 'Japanese Examined Patent Publication No. 47-30,723 and Japanese Unexamined Patent Publication No. 4-153,321 disclose a method for manufacturing ultrafine fibers' which is incompatible with each other The two polymers are prepared in the form of islands in the sea, or in the form of radiation or staggered laminates to prepare composite fibers, and dissolve_remove A polymer in composite fibers. This method is suitable for making very fine fibers or filaments with the required thickness and length. However, the disadvantage of this method is that one of the two polymers must be removed from the composite fibers because of dissolution. -A complicated method of removing a polymer makes the productivity of ultrafine fibers low and its production cost high. In addition, Japanese Unexamined Patent Publication No. 62-133,164 discloses a method of preparing ultrafine fibers in which two or more polymers Arrange in a radiant form or alternate lamination, and separate the composite fibers by the difference in thermal expansion between the two polymers, the difference in shrinkage between the two polymers, or by applying mechanical forces on the composite fibers. However, this method has disadvantages The separation property of the composite fiber is not high enough, and it must use a variety of polymers. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 public director) 554097 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A ---- ----- ------- ^ ___ 5. Description of the invention (3) The production equipment is complex and the productivity of ultrafine fibers is low. Step, Japanese Unexamined Patent Publications Nos. 8-325,945 and 8-260,343 disclose a method for preparing ultrafine fibers, which forms a hollow fiber from a mixture of a polymer and an additive, and applies a proper treatment A treatment to reduce the weight of hollow fibers, and to separate the polymer parts surrounding the hollow space from each other by the treatment. The disadvantage of this method is the design of the spinneret that forms hollow fibers from multiple polymer segments Restrictions, and thus the number of separated hollow fibers or the thickness of the separated fibers. In addition, the alkali treatment must be performed to limit the use of the separated fibers. The single-component polymer-removing method known to produce ultrafine fibers cannot satisfactorily produce ultrafine fibers suitable for various fields with high efficiency. SUMMARY OF THE INVENTION One of the objectives of the present invention is to provide hollow co-polymerized Laiwei m fabrics with good operational properties, such as in carding operations, and to be able to apply mechanical stress on hollow, co-polymerized fibers. And it is easily separated into a plurality of fine fibers 'and the separated copolyester fine fibers produced from the hollow copolyester fiber' contains the copolyester fine fibers and a fabric or knit with high heat insulation properties and good hand feeling Materials, including the separated copolymerized vinegar fine fibers and artificial leather with a soft feel, and non-woven fabrics containing the separated copolymerized 1 fine fibers and a soft touch, suitable for use as paper-like sheet-like materials and packaging materials. The above objectives can be achieved by the separable hollow copolyester sheet of the present invention; ^ Sai Cai Guan Jia Pi (CNS> Α4 · (2 敝 297 Public Holiday 1 ---- (Please read the precautions on the back before —Packing — Book κ) Order-line 554097 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ________B7_ V. Description of the invention (4) Fiber, separated copolyester fine fiber, fabric or knitted fabric, artificial leather and other Each of the separable hollow copolyester fibers includes (A) at least one hollow portion extending along the longitudinal axis of the hollow copolyester fiber, and (B) The shell portion extending on the longitudinal axis surrounds the hollow portion and the copolyester containing a dicarboxylic acid component, which includes terephthalic acid and its amount is the total molar amount of the dicarboxylic acid component. 1 to 6 mol% of at least one dicarboxylic acid containing a sulfonate group, and a glycol component including ethylene glycol, the hollow fiber has (1) 0.56 to 8.89 decigrams (0.5 to 8.0 denier) ), (2) the total cross-sectional area of the hollow part versus the total cross-section of each fiber The area ratio is 25/100 or more, (3) the degree of crystallization of the copolyester is 20% or more, and (4) the crystalline size in the plane of the copolyester (〇10) is 4.0 nm or more; and hollow copolymerization The shell part of the ester fiber has many cracks randomly located in the shell part and extending substantially intermittently along the longitudinal axis of the hollow copolyester fiber, and can apply mechanical stress to the shell part of the hollow copolyester fiber The separated copolyester fine fibers of the present invention are copolymerized from the separable hollow copolyester fibers by applying mechanical stress to the shell portion of the separable hollow copolyester fibers. Manufacturer of ester fibers. The fabric or knitted fabric of the present invention comprises the above-mentioned separated copolyester fine fibers, preferably in an amount of at least 20% by weight based on the total weight of all the fibers contained in the fabric or knitted fabric. The artificial leather of the present invention includes A substrate containing the above-mentioned separated copolyester fine fibers, the content of which is preferably at least 20% by weight, and impregnated (please read the precautions on the back first-install-then buy this) thread-this paper size Applicable Chinese National Standard (CNS) A4 size (210 X 297 mm)

* II II. I 554097 Consumption cooperation between employees of the Intellectual Property Bureau of the Ministry of Economic Affairs Du printed 5. Invention description (5 is a synthetic resin of the textured sheet. The non-woven fabric of the present invention includes intertwined with each other or a variety of each other through an adhesive. The fibers, and the fine copolymeric vinegar fibers containing the separation described above, are preferably at least 3% by weight of the total f of all fibers contained in the non-woven fabric. Brief Description of the Drawings Figure 1 shows the separable hollow copolymerization of the present invention. Sectional view of an electron microscope embodiment of an ester fiber. Figure 2 shows a side view of a cross-sectional electron microscope embodiment of a separable hollow copolyester fiber embodiment of the present invention. Figure 3 shows an embodiment of a separated copolyester fiber embodiment of the present invention. Side view of a cross-section electron microscope. DESCRIPTION OF THE PREFERRED EMBODIMENTS The detachable hollow copolyester fibers of the present invention each include (A) at least one hollow portion extending along the longitudinal axis of the hollow copolymer S fibers, and (b) The shell portion extending along the longitudinal axis of the hollow copolyester fiber surrounds the hollow portion. The shell portion of the detachable hollow copolyester fiber of the present invention comprises a dicarboxylic acid composition A copolyester, the dicarboxylic acid composition includes terephthalic acid and at least one dicarboxylic acid containing a sulfonic acid ester group of dicarboxylic acid and 1 to 6 mol% of the total mole of the dicarboxylic acid composition, and an A glycol component including ethylene glycol. In other words, the polyester contains ethyl terephthalate and at least one dicarboxylic acid ester-containing dicarboxylic acid ester unit as its main repeating unit. In addition, the present invention Hollow copolyester fiber has (1) 0.56 to 8.89 Please read the note above. The size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 554097 A7 B7 V. Description of the invention (6) points The thickness of 仟 cm (0.5 to 8.0 denier), (2) the ratio of the total cross-sectional area of the hollow portion to the total cross-sectional area of each fiber is 25/100 or more, and (3) the degree of crystallization of the copolyester is 20 %, And (4) the crystal size of the copolyester (010) plane is 4.0 nm or more. Furthermore, the shell portion of the hollow copolyester fiber of the present invention has randomly located shell portions and substantially along the shell portion. The longitudinal axis of the hollow copolyester fiber extends intermittently It has many cracks, and thus can be separated into a plurality of fine fibers by applying mechanical stress to the shell portion of the hollow copolyester fiber. Referring to FIG. 1, an electron microscope of the separable hollow copolyester fiber of the present invention A cross-sectional view showing multiple cracks found in the cross-section. The cracks penetrate from the outer surface of the shell portion to the inner surface of the hollow portion. Referring to FIG. 2, the cross-section electrons of the detachable hollow copolyester fiber of the present invention Microscope side view showing multiple intermittent cracks or pores found in the shell portion of the hollow fiber. These cracks or pores have a specific length and extend substantially along the longitudinal axis of the hollow fiber. When mechanical stress such as whipping force is applied At this time, the shell portion of the hollow copolyester fiber of the present invention is separated into a plurality of copolymerized 6-thin fine fibers along the longitudinal axis of the hollow fiber, as shown in FIG. 3. The separated copolyester fine fiber can be broken by mechanical stress. In the copolyester used in the shell portion of the separable hollow copolyester fiber of the present invention, in addition to terephthalic acid, the dicarboxylic acid component contains 1 to 6 mol%, preferably 2 to 5 mol. %, At least one dicarboxylic acid containing a sulfonate group. If the dicarboxylic acid contains sulfonic acid esters in the dicarboxylic acid composition, the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 9 ~-(Please read the precautions on the back before filling this page) Factory-installed, 11 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 554097 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 Β7 V. Description of the invention It can well form cracks that intermittently extend along the longitudinal axis of the hollow copolyester fibers. Therefore, it may be difficult to separate the shell portion into multiple fine fibers, especially ultrafine fibers. At the same time, when When the content of the dicarboxylic acid containing sulfonate group in the dicarboxylic acid component is more than 6 mole%, although a crack extending along the longitudinal axis of the hollow copolyester fiber can be formed, it can be used to produce a separable hollow ~ copolymer. The stability of the dissolution-spinning operation of the ester fiber may be too low. The sulfonic acid group-containing dicarboxylic acids suitable for the present invention, including aromatic and aliphatic dicarboxylic acids containing the sulfonic acid ester group, are preferred. Sulfoisobenzene 5-sodium, 5-isopropylisophthalate, 5-chain isopropylisophthalate, 4-sodium diisoisophthalate, 5-sodium sulfo-2,6-naphthalenedicarboxylic acid, and These acids can form derivatives of S. These dicarboxylic acids containing sulfonate groups can be used alone or in a combination of one or more. In the copolyester used in the present invention, In addition to phthalic acid and dicarboxylic acids containing sulfonate groups, the dicarboxylic acid component may contain at least one other dicarboxylic acid, and in addition to ethylene glycol, the diol component may contain at least one other dicarboxylic acid. Alcohol, unless it prevents the achievement of the object of the present invention. Other dicarboxylic acids are preferably selected from aromatic dicarboxylic acids, such as isodibenzoic acid'diphenyldicarboxylic acid, and naphthalenedicarboxylic acid; aliphatic Dicarboxylic acids such as citric acid adipic acid and sebacic acid; and oxoacids such as p-acrylic acid and 4- (β-hydroxyethoxy) benzoic acid. These additional dicarboxylic acids may be It can be used alone or in a combination of two or more. Other diols are preferably selected from aliphatic diols, such as 1,3-propanediol, ι, 6- This paper rule applies to Chinese national standards (CNS ) Α4 secret (21GX297 public celebration) ~ " " " Γ〇 ~ 1

554097 A7 -------- B7 V. Description of the invention (8) Hexylene glycol and neopentyl alcohol; aromatic diols, such as W. bis (β-silylethoxy) benzene, and polyalkylene diene Alcohols, such as polyethylene glycol and polypropylene glycol. These other diols may be used alone or in a combination of two or more thereof. In general, as for the polyester resin used for fibers, the more the degree of polymerization of the polyester is, the lower the stability of the polyester melting-spinning operation, and the more difficult it is to manufacture fine fibers. In addition, the lower the degree of polymerization of the polyester, the more difficult it is to produce hollow fibers having a large hollow space. Therefore, the intrinsic viscosity (η) of the copolyester used in the present invention is preferably from 0.35 to 0.70, more preferably from 0.40 to 0.55, such as 35. (: Measured in orthophenol. The copolyester used in the shell portion of the separable hollow copolyester fiber of the present invention may be added with one or more additives optionally. Employees of the Bureau of Intellectual Property, Ministry of Economic Affairs Consumer cooperative printed additives include functionalizing agents such as antibacterial agents, hydrophilizing agents, anti-terminators and deodorants; and inorganic particulates such as titanium dioxide, zinc oxide, barium sulfate, hafnium oxide, alumina, magnesium oxide, oxidation Calcium and tourmaline. The choice of these additives is based on the purpose of using the final product of the separable hollow copolyester fiber. When inorganic particles are used, the size of the inorganic particles is preferably 0 to 1 micron, more preferably 0 · Micron to 07 micron, and the amount of 1 to 10% by weight, preferably 2 to 7% by weight, is stored in the shell portion of the hollow copolyester fiber. Each fiber of the separable hollow polyester fiber of the present invention The thickness is from 056 to 8.89 dm (0.5 to 8.0 denier), preferably ^^ to winter dm (1.0 to 4.0 denier), more preferably 1.67 to 3.33 dm ( 1 · 5 to 3.0 denier). When each fiber The thickness is less than 0.556 dm (0.5 denier). The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 public envy) " ~ \\: --- 554097 A7 B7_ V. Description of the invention (9 ) ~~, the stability of the melting-spinning operation of the manufacture of separable hollow copolyester fibers is not good, and the hollow ratio of the separable hollow copolyester fibers produced is not good. The hollow ratio refers to the hollow part The ratio of the total cross-sectional area to the total cross-sectional area of the hollow fiber. At the same time, when the thickness of each fiber is greater than 8 89 centimeters per square meter (8.0 denier), the thickness of the shell portion of the hollow copolyester fiber produced is too large Although the stability of the melt-spinning operation is good, even when mechanical stress is applied to the shell portion, the shell portion does not satisfactorily form cracks along the longitudinal axis of the hollow copolyester fiber, and the shell portion It has not been separated into satisfactory fine fibers. The hollow ratio of the separable hollow copolyester fiber of the present invention refers to the ratio of the total cross-sectional area of the hollow portion to the total wearing surface area of each hollow fiber, which is 25 / 100 or more, preferably 40 / 100 to 60/100. When the hollow ratio is less than 25/100, the hollow copolyester fibers produced cannot be well separated into fine fibers even if mechanical stress is applied thereto. However, When the hollow ratio is too large, the thickness of the shell portion of the hollow fiber produced is too small, and it is easy to break in the melting-spinning operation and processing operation. Generally, the hollow ratio of the hollow copolyester fiber is preferably not more than 85/100. Ministry of Economic Affairs Each detachable hollow copolyester fiber printed on the present invention by the Consumer Property Cooperative of the Intellectual Property Bureau, preferably forms a single hollow portion in a manner that the cross section of the hollow portion and the cross section of the hollow fiber are substantially concentric, so that the shell The thickness of the portion is substantially uniform. When the cross section of the hollow part and the cross section of the hollow fiber are centrifuged, the thickness of the shell part is substantially non-uniform. The higher the eccentricity, the higher the non-uniformity of the thickness of the shell portion. Therefore, it is difficult to evenly separate the produced shells. 12 This paper size is applicable to Chinese National Standards (CNs) A4 specifications (210 X Biefanglu) 554097 Printed by A7, Consumer Cooperative of Intellectual Property Bureau, Ministry of Economic Affairs ----- --- B7 V. Description of the invention (1〇) Fine fibers, it makes it difficult for the separated fine fibers of the students to form a fabric, knitted fabric or non-woven fabric with the soft touch, or a textured sheet for artificial leather. . The detachable hollow copolyester fiber of the present invention has a degree of crystallinity of the copolyester of more than 20%, preferably 22 to 33%, and a crystal size of the copolyester (〇1〇) of 4 nm or more. It is preferably 50 to 85 nanometers, such as those measuring the half-value width of the (010) plane diffraction peaks from wide-angle X-ray diffraction photography. When the degree of crystallization of the copolyester is more than 20% and the crystal size of the (010) plane is 4 μm or more, the hollow copolyester fiber produced has good separation properties. When the degree of crystallization of the copolyester is less than 20%, and / or the crystal size of the (010) plane is less than 4 nm, the hollow copolyester fiber produced exhibits poor separation properties, so it is difficult to separate into multiple fine fibers. , Especially very fine fibers. In the separable hollow copolyester fiber of the present invention, the shell portion has a plurality of cracks which intermittently extend along the longitudinal axis of the hollow shell and the copolyester fiber. In the longitudinal direction of each hollow copolyester fiber, the length of the crack is limited, and it can penetrate the shell portion completely or incompletely. The form of the crack can be a pore or a long, narrow opening. Cracks may include potential cracks ' along the easily tearable shell portion when mechanical stress is applied. When no crack is formed, the shell portion cannot be easily separated into fine fibers even if mechanical stress is applied to the shell portion. Although the separable hollow copolyester fiber according to the present invention has good mechanical properties in the longitudinal axis direction, the hollow fiber has poor mechanical properties in the horizontal axis direction. Therefore, when applying this paper's standard for financial compliance (CNS) A4 · (21 () > < 297 public directors) to the hollow fiber shell part 13 (Please read the precautions on the back before filling this page) II equipment · -ΓΓ Fill in too much

flu I ^ 54097 A7 T, ^ --- Ε_ hair, invention description (u) mechanical stress, preferably more than 90% of the fiber, essentially mainly along the longitudinal axis of the hollow fiber intermittently extending cracks, each Separated into 4 or more fine fibers, more preferably 5 to 20 fine fibers. Therefore, from the separable hollow copolyester fibers of the present invention, extremely fine fibers can be produced. At the same time, before applying mechanical stress, when the separable hollow copolyester fibers are heat treated under tension, the separation properties of the hollow fibers can be enhanced. The form of the separable hollow copolyester fiber of the present invention may be a cut fiber or a continuous filament, which may be selected according to the purpose and application of the hollow fiber. The separable hollow copolyester fiber of the present invention can be produced by a specific melt-spinning method as described below. The melt of the copolyester is extruded through a hollow filament spinneret, which has a plurality of spinnerets for forming hollow filaments, and is blown with a heating gas at 50 to 230 C '180 to 210 ° C. To the extruded hollow filamentous copolyester melt stream, which is located in a heating zone of 0 to 50 mm below the spinneret. The blowing angle of the heating gas is 30 to 45 degrees downward in the right-angle direction of the flow path of the extruded hollow filamentous copolyester refining material stream. In other words, the heated gas system is blown in the upward direction, and the melted extruded hollow filament copolyester melt stream flows in the downward direction. Therefore, the blowing of the heating gas and the flow of the hollow filamentous copolyester melt stream are achieved in a countercurrent direction. The blowing speed of the heating gas is 10 to 5.0 m / s, preferably 20 to 3.0. Meters / second. This paper ruler Qi Cai Guan Jiaxian (CNS) A4 size (210X297 mm) Γ ^ 4 (Please read the precautions on the back before filling out this page) Factory installed · Ordered by the Intellectual Property Bureau of the Ministry of Economic Affairs and printed by the Consumer Cooperatives 554097 A7 B7 12 V. Description of the invention (After passing through the heating zone, the hollow filamentous copolyester melt stream passes through the buffer zone below the heating zone and its length is 50 to 150 mm, and then lies below the buffer zone and its length is 1. The cooling zone is cooled and solidified in a cooling zone of 0.00 to 450 mm, preferably 150 to 350 mm. In the cooling zone, the cooling air is ^ to% ° C, 20 to 25 ° C cooling air, and 2.0 · 4 0 meters / second, preferably 15 to 3.5 meters / second, at a blowing speed to the hollow filamentous copolyester melt stream. When the cooling operation is performed under conditions other than the above, a portion of the hollow filaments generated The properties may not be very good. The cooled-cured copolyester filaments are under a pull of more than 150, preferably 150 to 500, more preferably 200 to 400, and 5,000 to 2000 meters. / Minute, preferably 1000 to 18000 meters / minute, the tension rate is tight. When it is less than 15 °, the stability of the melt-spinning operation is poor, and the microstructure of the resulting fiber may be too small in the crystal size of the copolyester (〇10) plane. At the same time, when the tension rate is greater than 200 At 〇m / min, the hollow ratio of the hollow copolyester fiber is greater than 25/100, and satisfactory crystallinity and crystal size may not be achieved, although the fine structure of the hollow fiber produced is on the (〇10) plane The copolyester crystal size may be larger. More progress' ¥ When the spinning tension is less than 500 meters / minute, the crystal size of the hollow fiber produced in the (010) plane is not good. When melting_spinning tension too When it is high, the undrawn hollow copolyester filaments produced have low drawability. Therefore, the melt-drawing tension is preferably not more than 500. For the end use of the produced hollow copolyester fibers Draw the tensioned, undrawn hollow filaments and optionally heat treatment. For example, in hot water at 50 to 70 ° C, draw at a draw ratio of 2.0 to 5.0. When (Please read first Note on the back again-this page) Intellectual Property of the Ministry of Economic Affairs Printed by employee consumer cooperatives 554097 Printed by employee consumer cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ------ B7 V. Description of the invention (13) When no heat treatment is applied, the drawn hollow copolyester fibers are highly exhibited Heat shrinkage. When heat treatment is applied under tension by heating rollers or hot plates, the degree of shrinkage of the hollow copolyester fibers produced is reduced. Further, when drawing and heat treatment in hot water without drawing Hollow copolymerized acetic acid filaments. When the filaments are excessively fed to the heat treatment operation, the hollow copolyester fibers produced have the property of self-swelling. In the drawing operation, the above-mentioned specific microstructure of the hollow fibers promotes the formation of random distribution. Numerous cracks extending intermittently along the longitudinal axis of the hollow fiber in the shell portion and the substance. Intermittent cracks can penetrate from the outer surface of the hollow fiber completely or incompletely through the shell portion to the inner surface of the hollow portion. The drawn hollow co-polymer fibers of the present invention may have potential cracks, which are not visible in the shell portion of the hollow fiber, but help to cause the shell portion of the hollow copolyester fiber to separate into fine fibers. The above-mentioned refining-spinning method is only representative, and is not intended to limit the method for producing the separable hollow copolyester fiber of the present invention. In other words, the separable hollow copolyester fibers of the present invention can be manufactured by another method. The separable hollow copolyester fibers of the present invention can be used alone or in combination with other fibers, such as the separable Synthetic polymer fibers other than hollow copolymer fibers and natural fibers such as cotton and wool fibers, and semi-synthetic fibers such as viscose silk fibers. When detachable hollow copolyester fibers are included and separated into fine fibers, the resulting fiber product has enhanced soft feel and bulk. This paper size is applicable to China National Standard (CNS) A4 specification (210X297 publication:) " " " " '^ ^ ——-(Please read the precautions on the back before this page) | Installation · Line-i ^ — HI —ϋ 554097 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (A7 B7 14 The fabric or knitted fabric of the present invention contains the isolated copolymer 1 fiber of the present invention. In the fabric or knitted fabric The isolated total "fine fiber contains: is at least wt% of the total amount of fibers contained in the fabric or knitted fabric, more preferably the weight of the human field / s fabric or knitted fabric with a separable hollow copolymerized vinegar fiber 3! 20 During the manufacture of fiber strands weighing more than $%, the hollow copolyester fibers in the fabric or knitted fabric are separated into fine fibers during the weaving or knitting and processing operations of the fabric or knitted fabric. The separated fine fibers produced can help To enhance the thermal insulation properties, bulkiness, and / or soft feel of fabrics or knitted fabrics. The artificial leather of the present invention includes a receiving sheet containing the copolymerized vinegar fine fibers isolated according to the present invention, and the receiving sheet is impregnated with the receiving sheet. A kind of synthetic resin. The form of the thin sheet is woven or knitted fabric or non-woven. The separated copolyester fine fiber is preferably at least 20% by weight, more preferably 30% by weight or more, and the content is stored in the substrate. Method for manufacturing artificial leather When treating a receiving sheet containing the copolymerized vinegar fine fibers separated according to the present invention, in the manufacture of artificial leather, hollow copolyester fibers are separated into fine fibers. Therefore, the artificial leather produced by the present invention has enhanced Soft touch, lightweight properties and flexibility. The non-woven fabric of the present invention includes a plurality of fibers intertwined with each other or bonded to each other by a binder, and fine polyester fibers including the separated copolyester of the present invention. In the non-woven fabric, The content of the isolated copolyester fine fibers is preferably at least 30% by weight, more preferably at least 40% by weight, and even more preferably at least 50% by weight. When the interwoven fibers are formed, during the interweaving process, the separable fibers should be heard first. Note f The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297). ) 17 554097 A7 _____B7 V. invention described T15) '^' hearts were separated into a fine polyester fibers copolyester fibers. The resulting non-woven fabric has enhanced soft touch, light weight and thermal insulation properties. When making a non-woven fabric with a paper machine, the detachable hollow copolyester fibers are cut into fibers of 3 to 30 millimeters in length, and the cut hollow fibers produced are mechanically beaten using a beater such as a disc refiner, and The hollow fibers are separated into fibers formed by thin fibrids. The beating treatment of hollow fiber is carried out under the conditions corresponding to the type of beating machine. Fine fibers formed from separated fibrids produced from detachable hollow copolyester fibers were suspended in water. The thin fiber slurry is added to form a thin-plate adhesive, and then supplied to a papermaking machine such as a long-line papermaking machine, a short-line papermaking machine or a roll papermaking machine. The wet-laid nonwoven fabric produced is passed through Yankee Dry with a dryer. The wet-laid nonwoven fabric produced by the above-mentioned wet method has uniformity and soft touch, which is not provided by the conventional nonwoven fabric. When the separated fine hollow copolyester fibers are not good for pulp due to insufficient foaming or fiber dispersion, traditional additives can be added to the fibers and pulp. Such as dispersant or thickener. The adhesive suitable for the wet-laid nonwoven fabric of the present invention may be selected from the traditional adhesive materials used in papermaking, such as natural water-soluble polymers such as gelatin and sodium alginate, and semi-synthetic water-soluble polymers such as phosphoric acid modified killing powder. , Cyanoethylated powder, methylcellulose and methylpropylmethylcellulose; synthetic water-soluble polymers such as polyvinyl alcohol, poly (sodium acrylate) and polyacrylamide; and other water-soluble polymer materials , Such as polyethylene glycol and polyphosphate. These binder substances may be used alone or as a mixture of two or more of them. The adhesive used for wet-laid non-woven fabrics can be selected from the National Standard for Water-Soluble Poly Paper (CNS) (Training Director) — 8 .-- (Please read the notes on the back first 丨 丨- Item on this page) Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, printed by the Consumer Cooperative 554097 V. Description of the Invention , Propylene, propylene, sulphur, homopolymer and copolymer of ethylene and ethylene. The latex may contain a plasticizer and / or stabilizer. Adhesive for wet-laid non-woven fabrics, which can be fiber Form: The adhesive fiber is preferably selected from the group consisting of polyethylene glycol fiber and polyethylene oxide fiber. The adhesive fiber has adhesiveness under wet and hot conditions after the operation. The adhesive fiber is also selected from the group of thermal fusion adhesive type. Polymers and copolymers of heat-dissolved fibers, such as 5 ^ propylene fibers, gas-saturated surface-reinforced polyethylene fibers, and ethylene-vinyl acetate copolymer fibers, are produced in a wet-laid nonwoven fabric made by a paper machine. Drying temperature 80 to 170. (: has adhesive f, and The heat-adhesive merging fibers of the core type and the sheath core type include a heat-fusion adhesive polymer and another polymer having a melting point higher than that of the heat-fusion adhesive polymer (RC). The non-woven fabric manufactured by the wet method in the present invention The content of the hollow copolyester fine fibers formed by the separated fibrids is preferably 30% by weight or more of the total weight of the wet-laid nonwoven fabric. At the same time, the content of the paper-making adhesive is preferably wet-laid. The total weight of the non-woven fabric is 5 to 30% by weight. When the amount of the adhesive is less than 5% by weight, the resulting wet-laid nonwoven fabric has poor mechanical strength and may be difficult to handle. At the same time, when the amount of the adhesive is more than 30% At% by weight, the fibers formed by the fibrids are connected to each other at the intersection of the fibers too much, so that the resulting wet-laid nonwoven fabric does not have an enhanced soft touch, such as the fibers formed from fibrids Expected. In addition to the fibers and adhesives formed by the separated fibrids, the wet-laid fabric of the present invention does not compulsively contain other fibers, such as natural pulp fibers, that is, various meshes (please read the back first Note on this matter again ---) This page size is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm) 19 554097 The Intellectual Property Office of the Intellectual Property Bureau of the Ministry of Economic Affairs printed a description of the invention (17) into pulp fibers and Polypropylene terephthalic acid n & fiber. Other fibers can impart non-woven fabrics with specific functional properties, such as π mechanical strength, stability, moisture absorption, or hydrophilicity. ... Copolymerization of the shell part of the fiber, even when used together with other fibers, such as core or hollow synthetic fibers such as polyester fibers, or natural fibers such as cotton or wool fibers, can be easily used together The ground is separated into a plurality of fibers thinner than the air Λ. Therefore, the resulting fibrous product has specific properties due to the separation of knife-cut copolyester fine fibers. For example, when a card machine is used to process ultrafine fibers, it is difficult for the fibers to smoothly pass through the card machine. In other words ^ The carding properties of the separated copolyester fine fibers are very low. When the carded grip is used to process the hollow copolymer fiber of the present invention, intermittent cracks are formed in the shell portion of the hollow fiber along the axis of the% $ of the hollow fiber, and then the hollow fiber is transformed into a bundle-like separation. The copolymerized vinegar fine fibers' need not separate the fine fibers from each other. In other words, the separated copolyester fine fibers operate in the form of bundles, so they can pass smoothly through the card. EXAMPLES The present invention will be further illustrated by the following examples, which are merely representative and do not limit the scope of the present invention in any way. In the examples, the following tests were applied. (1) Intrinsic viscosity The intrinsic viscosity of polyester resin was measured at a temperature of 35 ° C using o-benzol as a solvent. (Please read the notes on the back before filling this page}

20 554097 A7 B7 V. Description of the invention (18) (2) Fiber thickness The fiber thickness was measured according to the Japanese Industrial Standard (JIS) L 1015, 7-5-1A method. (3) Hollow ratio By using an image analysis system (brand name: PIAS-2, manufactured by PIAS KK), the cross section of each hollow fiber is enlarged at a magnification of 500 times, and the total cross-sectional area of the fiber and the hollow portion of the fiber are measured. Part of the cross-sectional area. The hollow ratio refers to the ratio of the cross-sectional area of the hollow portion to the fiber. (4) Intermittent cracks Prepare a micro-enlarged image of the side surface of the hollow fiber and observe it to see if cracks or pores are formed on the peripheral surface of the hollow fiber along the longitudinal axis of the hollow fiber. (5) The thickness of the shell part is 500 times the enlarged section of the hollow fiber. Measure the total cross-sectional area of the hollow fiber and the cross-sectional area of the hollow part, and calculate from the total cross-sectional area of the hollow fiber and the cross-sectional area of the hollow part. Shell thickness. The test was performed on 20 hollow fibers, and the thickness of the shell portion was expressed as an average value of 20 test results. (6) Proportion of the amount of hollow fibers that can be separated into at least 4 fine fibers in the total hollow fibers. Electron micrographs of various sections of hollow copolyester fibers were prepared. From the figure, 50 cross sections were randomly selected, and the number of cross sections with more than 4 cracks and the ability to separate hollow fibers along the cracks was counted. Then, the percentage of the hollow copolyester fibers that can be separated out of the 50 hollow copolyester fibers was calculated. This paper size applies to China National Standard (CNS) A4 (210x297 mm) -21-(Please read the precautions on the back before filling out this page), τ Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives, printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the employee consumer cooperative 554097 A7 B7 V. Description of the invention (19) (7) The average number of fine fibers separated from the hollow copolyester fiber is on the same picture used in the test of (6). The total number of fine fibers separated from the 10 hollow copolyester fibers was calculated as the average number of fine fibers that can be separated from each hollow copolyester fiber. (8) Degree of crystallinity The degree of crystallinity of the copolyester resin in the hollow fiber was measured using a wide-angle X-ray diffraction image of the fiber. (9) Crystal size in the (010) plane The crystal size of the copolyester crystals in the (010) plane was measured from the half width of the diffraction peak of the (010) plane in the wide-angle X-ray diffraction image. (10) Melt-spinnability and drawability (i) The spinnability of the hollow fiber formed from the copolyester resin was evaluated as follows. Spinning results 3 The number of filament breaks per spinning orifice per day is less than 0.1. 4 The number of adhered filaments per spinning orifice per day is less than 0.1. 2 The number of filament breaks per spinning orifice per day is 0.1 to 0.2. The number of adhered filaments per spinning orifice per day is 0.1 to 0.2. The number of filament breaks per spinning orifice per day is greater than 0.2. The number of adhered filaments per spinning orifice per day is greater than 0.2. This paper size applies to China 210X297 mm) 22 (Please read the notes on the back before filling in this page) Order 554097 A7 B7 3 2 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (20) The term “adhesive filaments” means that two or more filaments are fused and adhered to each other to form a single filament. (Ii) The drawability of the undrawn filaments is evaluated as follows. Spinning results each day The number of filament windings caused by the filament breakage of the drawing roller is less than 1. The number of undrawn filaments per 100,000 filaments is less than 5. The filaments arising from the filament breakage per drawing roller per day The number of windings of the roller is 1 to 3. The number of undrawn filaments in the mother 100,000 filaments is 5 to 100,000. The number of filament windings of each drawing roller due to filament breakage is greater than 3. The number of undrawn filaments per 100,000 filaments is greater than 10 〇 (11) The thermal conductivity of the sample is measured according to JIS A 1412, and the weight is classified as 4 grade 0 grade unit volume 詈 A 0 · 048仟 cal / m · hour · .c below B 0.048 仟 cal / m · hour · ° C but less than 0.055 仟 cal / m • hour · .c C 0.055 仟 cal / m • hour · .◦ but less than 0.060 公 cal / meter • hour · .c D greater than 0.060 仟 cal / meter • hour · .C 23 This paper is again applicable to the Chinese National Standard (CNS) A4 specification (210X297 public director) 554097 A7 B7 V. Description of the invention (21) — (12) The light weight of the fabric is from five pieces (area: 5 square centimeters) ) Fabric, which is prepared from individual fibers with a thickness of 1.67 dcm (1.5 denier) and hollow, hollow fibers with a ratio of 30%, to prepare a standard sample. Five fabrics are stacked. The thickness of the standard fabric and the volume and weight of the standard sample. Calculate the weight per unit volume of the standard sample. Prepare a sample from the fabric whose basic weight is in line with the standard fabric, and calculate the weight per unit volume of the sample. From the test results, the weight of the classified lightweight fabrics is evaluated by the following 4 grades. The weight A is significantly smaller than the standard sample B and less than the standard sample C. It is substantially equal to the standard sample D. It is larger than the standard sample (13) of fabric, knitted fabric, or The feel of non-fabric Softness, coolness, drape, cushioning properties and compression resistance) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs to evaluate the feel of fabrics, knitted fabrics or non-woven fabrics with sensory tests, and the assessment is classified into the following grades Α to D Grade A Excellent B Good C Good D Poor 24 The paper size is in accordance with Chinese National Standard (CNS) A4 (21 × X 297 mm) 554097 5. Description of the invention (22) (14) Initial bulk of non-woven fabric The degree of initial bulk of the non-woven fabric is measured at a specific volume according to JIS L 1097. A card was used to prepare a web from the fiber mass with a size of 20 cm by 20 cm and a weight of 40 g. Place the net in the ambient atmosphere for more than 1 hour ', and then stack a thick disk with a size of 20 cm x 20 cm and a weight of 0.5 g / cm 2 on the net, and place a 2 kg ball (Α ) Put it on the thick plate for 30 seconds, remove the small ball (A) from the thick plate, and let the net and thick plate stand still for 30 seconds. Repeat the placement and removal of the ball several times. After the ball has been removed and the net and the plate are allowed to stand still for 30 seconds, the south of the four corners of the bottom of the plate is measured in millimeters, and the average n degree (hG) of the measured height is calculated in millimeters. Calculate the specific volume of the net (initial bulk) according to the following equation: Initial bulk (cubic cm / g) = (20 χ2〇χ hq / 1〇) / w (15) Initial compression of the fabric The bulk is measured in terms of specific volume in accordance with JIS L 1097 to measure the initial compression bulk of the fabric. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the same net as described in (14) test was stacked with a thick disk with a size of 20 cm x 20 cm and a weight of 0.5 g / cm2, and then weighted Compress the pellet (B) of 4 kg for 30 seconds. Then measure the height of the bottom four corners of the thick disc in millimeters, and calculate the average height (h) of the measured height in millimeters. Calculate the specific volume of the net (initial compression bulk) according to the following equation: Initial compression bulk (cubic cm / gram (2 × 2〇xhi / 1〇) / w (16) bending resistance use width A sample of 2.5 cm and a length of 9 cm. The lower I paper size of the sample applies the Chinese National Standard (CNS) M specification (210 > < 297 Gongqing 1--25-554097 A7 __B7_ V. Description of the invention (23 ) The end is fixed at a length of 2 cm, and a bending force is applied at a distance of 2 cm from the free end of the sample. When the sample is bent at an angle of 90 degrees, use a tensiometer (digital force meter) to measure the elastic force generated in the sample. The resistance of the sample to deformation is expressed by the elastic force per cm of the sample width. (17) Carding and passing properties (please read the precautions on the back first and save this page). The line is printed by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The fiber mass was passed through a flat carding machine at a carding speed of 50 m / min. The carding properties of the fiber mass were classified into the following 4 grades. Grade carding 4 Excellent carding properties. Unblocked carding machine, not Fracture of the web occurred, and no fiber agglomeration was formed. 3 No carding blockage and network breakage occurred. A small amount of fiber agglomeration occurred. 2 No carding blockage occurred. A small amount of network breakage occurred and a small amount of fiber agglomeration occurred. 1 A carding blockage, network breakage, and fiber agglomeration occurred. U8) Spinnability Evaluation of the processability of hollow copolyester fibers in carding, carding, woolen and fine spinning operations, and classify them into the following 4 grades. Grade 1 Carding Quality 4 Carding, Carding No difficulties were encountered in the carding, carding and spinning operations. 3 No difficulties were encountered in carding, carding and roving operations. 2 No difficulties were encountered in carding and carding operations. 1 No difficulties were encountered only in carding operations. Standards (cns) 8 4 threats (2⑴X297 male f ——- 554097 A7 ______B7 V. Description of the invention (24) (19) Bending strength (kg / cm²) Calculate the bending strength of the sample according to the following equation. Bending strength ? (Kg / unilateral male model 60x bending resistance (g / min) [thickness (mm)] 3 (20) A specimen with a shrinkage resistance of 20 cm x 20 cm, bent with a radius of curvature of 5 mm, Hold with fingers The curved part of the sample, and moving the finger to transfer the position of the curved part, while observing the bending conditions of the sample with the naked eye. When the curved part is round, the resistance to shrinkage of the sample is good, when "4 When the curved part is sharply wrinkled, the sample's shrinkage resistance is poor. The shrinkage resistance is evaluated and classified into 4 grades. The shrinkage resistance A is excellent B is good C is good D is poor (21) Bending elasticity Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, a sample with a width of 2.5 cm and a length of 9 cm is bent around its horizontal centerline until the thickness of the bent sample becomes 3 times the thickness of the sample 'and measured by tension Measure the repulsive force produced by the curved specimen. The elasticity of the specimen is expressed by the repulsive force per cm of the specimen width. The higher the bending elasticity, the higher the applicability of the sample as artificial leather. (22) Buckling endurance The flexing endurance of the sample was measured in accordance with JISK 6505,525. (23) Break length

554097 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (25) The test method for measuring the tensile strength of paper and paperboard according to JIS P 8113, measuring the fracture length of the sample. (24) Tear strength The tear strength of the sample was measured in accordance with JIS L 1096. 1 case of a polyethylene terephthalate copolyester resin containing 4.5 mole% of copolymerized 5-sodium sulfoisophthalate (sip), intrinsic viscosity of 0.45, and 0.07 wt% titanium dioxide At a polymer temperature of 268 ° C and an extrusion rate of 1600 g / min, melt extrusion is performed through a melt spinneret having 2000 hollow filament forming nozzles, and the extruded hollow filament copolyester is melted and extruded. The resin was cooled to solidify and tightened at a tightening rate of 1800 meters / second. The thickness of each filament of the undrawn hollow copolyester filaments was 4.44 dmcm (4.0 denier), and the hollow ratio was 50/100. In the melt spinning operation, hot air at 200 ° C is blown at a rate of 3.5 meters per second in a heating zone located 0 to 50 mm below the spinneret at a right angle to the flow path of the hollow filament stream. At an angle of 35 degrees upward, blow toward the extruded hollow filamentous copolyester resin melt stream. After passing through the heating zone, the hollow filamentary stream passed through a buffer zone with a length of 100 mm and below the heating zone. After that, in the cooling zone located below the buffer zone and with a length of 250 mm, the cooling air at 25 ° C. Blow at a blowing rate of 3.5 meters per second to cool and solidify the hollow filamentous copolyester resin melt stream into hollow copolyester filaments. The undrawn hollow copolyester filaments are drawn in hot water at 65 ° C in a single stage at a draw ratio of 2.80; by using a heating roller, the paper standard is in accordance with the national T national standard (CNS) A4 specification (210 X297 public director) -28 (Please read the precautions on the back first 丨 Thread 554097 A7 ______B7 _ V. Description of the invention (26), heat treatment at 140 ° C under tension; use shrink machine Curl with a number of crimps of 12/25 mm; blow with 120 ° C hot air for heat fixation; then cut to a length of 51 mm. The individual fiber thickness of the resulting hollow copolyester cut fiber is 1.6 7 Tiller grams (1.5 denier), hollow ratio of 50/100, and numerous cracks that extend intermittently along the longitudinal axis of the fiber. Test results are shown in Table 1. Examples 2 and 3, and 1 to 5 Comparative Examples In each of the second and third examples and the first to fifth comparative examples, except that the hot air blowing and cooling operations were performed under the conditions shown in Table 1, hollows were produced in the same manner as in Example i. Copolyester filaments. Undrawn hollow copolyester filaments The drawing and heating treatments were performed under the conditions shown in Table 1, and then the drawn and heat-treated hollow copolyester filaments were crimped and cut in the manner shown in Table 1. The test results are shown in Table 1. Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The paper size is applicable to China National Standard (CNS) A4 (210X297 mm) 554097 A7 B7 V. Description of the invention (27) f 5 fss ^ ¾¾¾%) Bi # §§ 5ssm ίί§§1 · 67 50 30 8.5 β 2 · 45 15 ″ 0.1 100 1.67 44 23 700 β 2 · 63 5.8 0.29 93 3 β $ Poverty ^^ 2.8 140 120 3.5 5 140 120 1έϋ4κ > > χ / #) Wukao-p ^ ((ma $ βα ^ 0β ^ II— (Please read the precautions on the back-then this page) 200 3.5 50 100 3_5 250 25 444 Private · 5 0.45 180 20 50 100 3.5 250 25 i 1.5 5 0.45 2 3 Order 1.67 50 30 8 · 5 β 2.45 15_1 0.1 700 2 2.00 140 120 200 3.5 50 50 3.5 250 25 5.56 Households 5 0.53 1.67 44 33 οο · 7 β 2.63 3.80 Ρ43 72 2 2.00 140 120 2 30 250 25 4.44 70 0.45 Line-1 · 67 44 19 3 · 7 02.60 0 1.67 0 3 200 140 120 30 250 25 4.44 0 0.45 Member of Intellectual Property Bureau, Ministry of Economic Affairs Co-op printed 1 · 67 22 200 500 β 40 2 · 5 0.67 43 two J1 50 30 7.8 6.70 0 two exhaust II 0 1 · 67 44 30 3.2 β 2.45 2.1 0.79 65 2 3 3.5 140 120 30 140 110

50 V 2.8 2 30 250 25 5.56 45 Ρ37 3 βί 50 250 25 33.33 45 P45 30 250 25 ί 45 P45 The paper size applies to the Chinese National Standard (CNS) A4 specification (210 × 297 mm) 30 554097 A7 B7 V. Description of the invention ( 28) Examples 4 to 7 and Comparative Examples 6 and 7 In each of Examples 4 to 7 and Comparative Examples 6 and 7, hollow copolyester cut fibers (fibers) having properties as shown in Table 2 were used. Length: 38 to 100 mm), drawn in a ring spinning method to produce fine strands with a twist of 17.1 rpm / 25 mm and a fine cotton count of 30. Weaving warp-drawn fine strands produced a plain fabric with a warp density of 87 fine strands / 25 mm, a weft density of 68 fine strands / 25 mm, and a width of 127 mm. The fabric was washed and then dyed with a disperse dye. In the seventh example, a hollow copolyester cut fiber and cotton fiber in a weight ratio of 50:50 were used to produce a plain fabric. The properties of the fabric are shown in Table 2. Form 2 (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

Example Number Example Comparative Example Item 4 5 6 7 6 7 Fiber Type PES PES PES PES PES PES Hollow Copolyester Fiber Individual Fiber Thickness (Temmeter) 1.67 3.33 8.89 1.67-1.67 1.11 Dimensional Hollow Ratio (%) 50 50 70 50-43 0 Degree of mass crystallinity (%) 30 32 31 30-1.3 1.3 Crystal size (nanometres) 8.5 8.4 8.7 8.5-3.0 3.0 Intermittent crack formation formation formation-thickness without shells (microns) 2.45 3.59 4.22 2.45-2.45-Average number of separated fine fibers 15.1 18.3 22.3 15.1-1 1 Thickness of separated fine fibers (tiller grams) 0.11 0.18 0.39 0.11-1.67 1.11% of hollow fibers isolated 100 98 99--0- Mixing ratio > 歹, K% by weight) 100 100 100 50 50 100 100 100 Spinnability of fiber 4 4 4 4 4 2 Fabric thermal insulation property AAAACD nature light weight AAAABD soft feel AAAACB cool feel AAAABC ΤΓ This paper size is applicable China National Standard (CNS) A4 specification (210X297 mm) 554097 Intellectual Property Bureau of the Ministry of Economy Employees Cooperatives Printed A7 B7 V. Description of the invention (29) Examples 8 to 10 and Comparative Examples 8 and 9 In each of Examples 8 to 10 and Comparative Examples 8 and 9, highly shrinkable hollow copolymers having properties as shown in Table 3 Ester-cut fibers (fiber length: 38 to 64 mm) and self-expanding hollow copolyester cut fibers (fiber length: 38 to 64 mm) were mixed at the mixing weight ratio shown in Table 3. The hollow fiber mixture is cut in a carding operation to form a mixed hollow fiber web. The knitting machines (fiber lock looms) each having a size 40 barb were used to handle the web at a needling density of 800 needles per square centimeter to provide a basis weight of 157 grams per square meter. Not fabric. The fabric was immersed in hot water at 68 ° C for 2 minutes to allow the fabric to shrink with a shrinkage area of 35%. The shrinked fabric was dewatered under vacuum and dried at 50 ° C for 5 minutes. A dry non-woven fabric having a basis weight of 242 g / m 2 was obtained. The non-woven fabric was placed between a heated metal cylinder at 60 ° C and a 60-mesh stainless steel mesh belt for 60 seconds to obtain a non-woven fabric having a thickness of 1.2 mm and a bulkiness of 0.202 g / cm3. An impregnating liquid (trademark: CRYSBON MP-185, manufactured by DAINIPPON INKIKAGAKUKOGYO), comprising a 12% by weight solution of 100% by weight of polyurethane in dimethylformamide, and 5% by weight % Carbon black is mixed to uniformly impregnate the non-woven fabric. Then, squeeze the impregnated fabric with a pair of squeeze rollers, then immerse it in hot water at 40 ° C to solidify the impregnating liquid contained in the fabric, and wash with water until the resin-impregnated fabric is substantially solid. Solvent-free and finally dried. An artificial leather was thus obtained. The test results are shown in Table 3. (Please read the precautions on the back first-this education) The paper size of the book is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) -32-554097 A7 B7 V. Description of the invention (30 Intellectual Property Bureau, Ministry of Economic Affairs Printed by Employee Consumer Cooperative

(Please read the notes on the back before-: fill out this page)

、 1T This paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) 33 554097 A7 B7 V. Description of the invention (31) Difference _11 to 15 cases and 10th and 11th comparison examples In each of Comparative Examples 10 and 11, hollow copolyester cut fibers (fiber length: 5 丨 mm) having properties as shown in Table 4 and self-expanding hollow copolyester cut fibers (fiber length) were used. : 38 to 64 mm), a carding operation is performed to form a web. A knitting machine (fiber-locking loom) each having a size 40 barb was used to prepare a non-woven fabric having a basis weight of 60 g / m 2 from the net. The test results for non-woven fabrics are shown in Table 4. (Please read the notes on the back before ^: Ben Gong) Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Printed by the Consumer Cooperatives of the Employees 34 This paper size is applicable to the Chinese National Standard (CNS) A4 (21 × 297 mm) 554097 A7 B7 5 Description of the invention (32 §s > ^^ 14 * vrb! $ Sfs 9S 0β ^ ¾ potential? Rrs (%) Miao 舯 ^ broken (%) ^ s $ ss m ss ^ 680 \ 0 ίβ (Please read the back first (Precautions Re-install-this education)

22 17 A A A A A 50 1.67 50 30 00.5 β 2.45 15 '' pll 50

22 18 A A A A A 50 3.33 50 32 00.4 β 3.59 183 P18 50 12 order

24 19 A A A A A 00 8.89 70 31 8.7 β 4 · 22 22.3 0 · 39so 13 50

27 21 B A A A A 1.67 50 30 00.5 β 2.45 15 · 1 21 50 Ϊ 14 50 1 · 67 50 13 30 澌 2 · 45 〇 1.67 〇 Line Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 20

48 23 n B B B B

50 22 C B ro B A

32 22 BBB Do B 2 1.67 50 30 οο · 5 β 2.45 15 ″ 0 ″ 1 00 15 80 so so 1.67 50 13 3.0 澌 245 〇 1.67 〇 1.67 50 13 30 澌 245 〇 1 · 67 Ο 1.33 Ο Μ 3 · 1 澌 Ο 1.33 〇 This paper size applies to Chinese National Standard (CNS) A4 (210X297 mm) 35 10 554097 Printed by A7 B7, Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of invention (33) " — 'The 16th to 19th cases are compared with the 12th and 13th. For example, the first case has a thickness of 1.67 centimeters (1.5 denier), a length of $ mm, a hollow ratio of 50%, a degree of crystallization of 30%, and The same uncurled, detachable hollow copolyester fiber with a size of 85 nanometers' and many intermittent cracks, in water at a liquid ratio of 1/100 (referring to the weight ratio of fiber to water) in a disc type The refiner performs a fiber separation operation to provide an aqueous slurry of fibrid fibers. (1) Adhesive fiber is added to the aqueous fibrid fibrous slurry, and its thermal adhesion temperature is about 120 ° C, and it includes copolymerization of terephthalic acid / isophthalic acid / ethylene glycol / diethylene glycol A side-by-side composite fiber composed of an ester side portion and a polybutene terephthalate side portion, having a thickness of 167 dm (1.5 denier), a fiber length of 5 mm, and a number of crimps of 0; and (2) An additional fiber composed of a non-hollow copolyester fiber, having a thickness of 0,56 dm (0.5 denier), a fiber length of 5 mm, and a number of crimps of 0. The amounts of adhesive fiber (1) and additional fiber (2) are shown in Table 5. The water content of the resulting mixed fibers was aggregated and subjected to a manual paper-making operation; the wet-laid nonwoven fabric sheet was dried with a Yankee dryer; the dried sheet was subjected to a thermal bonding operation at a temperature of 120 ° C. A wet-laid nonwoven fabric having a basis weight of about 50 g / m 2 was obtained. The test results for non-woven fabrics are not in Table 5. This paper size applies the Chinese national standard (〇 奶) 8 4 specifications (210 father 297 mm) '一-:: 36-(Please read the precautions on the back before this page) | Binding · Binding · 554097

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs in the detachable hollow copolyester fiber of the present invention, the shell portion substantially has intermittently extending cracks along the longitudinal axis of the hollow fiber, and can be easily separated along the crack Into multiple fine fibers, especially very fine fibers. When separated fine fibers are used in fabrics or knitted fabrics, the resulting fabric has high thermal insulation properties and a soft touch. At the same time, when the separated fine fibers are used for a substrate of artificial leather, the artificial leather produced has the advantages of a high soft touch and an improved lightweight property. When the separated copolyester fine fiber is used for a nonwoven fabric, the resulting nonwoven fabric has enhanced lightweight properties, heat insulation properties, and a soft touch. In particular, when a paper-making operation is performed on the separated copolyester fine fibers, even when the basis weight of the non-woven fabric is low, the resulting wet-laid non-woven fabric has the advantage of good surface properties. This paper standard applies Chinese National Standard (CNS) A4 Specification (210X297 mm) 37 (Please read the precautions on the back before filling this page) Order

Claims (1)

554097 Printed by A8, B8, C8, D8, Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 6. Scope of patent application 1. Separable hollow copolyester fibers, each of which includes (A) at least extending along the longitudinal axis of the hollow copolyester fiber A hollow portion, and (B) a shell portion extending along the longitudinal axis of the hollow copolyester fiber and surrounding the hollow portion, wherein the shell portion comprises a dicarboxylic acid component including p-benzene The diacid and a dicarboxylic acid containing a sulfonic acid ester group in a total mole number of 1 to 6 mole% of the dicarboxylic acid component, and a copolyester including a glycol component of ethylene glycol, the hollow fiber has (1) The thickness of 0.56 to 8.89 dm (0.5 to 8.0 denier), (2) The ratio of the total wearing surface area of the hollow portion to the total cross-sectional area of each fiber is 25/100 or more, and (3) the copolymerization 酉The degree of crystallization is more than 20%, and (4) the crystal size on the (010) plane of the tablet polyester is 4.0 μm or more, and the shell portion of the hollow copolyester fiber is randomly located on the shell portion and the substantial edge Many cracks extending intermittently along the longitudinal axis of the hollow copolyester fiber The seam, and thus the hollow copolyester fiber, can be separated to form a plurality of fine fibers by applying mechanical stress to the shell portion. 2. The separable hollow copolyester fiber according to item 1 of the patent application scope, wherein when mechanical stress is applied to the shell portion of the hollow copolyester fiber, at least 90% of the shell portion of the hollow copolyester fiber can be separated Into at least 4 fine fibers. 3. The separable hollow copolyester fiber according to item 1 of the patent application, wherein the average thickness of the shell portion is 5 micrometers or less. 4 · By applying mechanical stress to the shell part of the detachable hollow copolyester fiber, the detachable hollow and paper size of the free patent application range 丨 is based on the standard + CNS A4 specification ( 210 X 297 public love) (Please read the precautions on the back before filling out this page) Order ·· 554097 A8 B8 C8 D8 Patent Application Scope Co-polyester fine fiber separated from co-polyester fibers. 5 · A kind of fabric or knitted fabric 'which contains the separated copolyester fine fibers as described in the patent application No. 怫. 6. The fabric or knitted fabric according to item 5 of the patent application, wherein the content of the separated copolymerized vinegar fine fibers is at least 20% by weight based on the total weight of the fibers contained in the fabric or knitted fabric. 7. An artificial leather comprising a matrix plate containing the separated copolymerized vinegar fine fibers as described in item 4 of the patent application and a synthetic resin impregnated into the matrix plate. 8. The artificial leather as claimed in the patent model, wherein the content of the separated copolymerized vinegar fine fibers in the matrix board is at least 2 () by weight. 9. A kind of non-woven fabric, which contains a large number of interwoven fibers and contains such as The isolated copolymerized fine fibers of the scope item 4. 10. If the non-woven fabric of item 9 of the scope of patent application, the content of the polyester fine fiber is at least the total weight of the fiber contained in the non-woven fabric; '0% by weight. I I 1 ^ I I ^ I I I —— — — — — II · 111111. (Please read the notes on the back before filling this page) Line 0 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 39