TW201912855A - Complex-fiber for the compressing molding body and manufacturing method thereof - Google Patents
Complex-fiber for the compressing molding body and manufacturing method thereof Download PDFInfo
- Publication number
- TW201912855A TW201912855A TW107131947A TW107131947A TW201912855A TW 201912855 A TW201912855 A TW 201912855A TW 107131947 A TW107131947 A TW 107131947A TW 107131947 A TW107131947 A TW 107131947A TW 201912855 A TW201912855 A TW 201912855A
- Authority
- TW
- Taiwan
- Prior art keywords
- fiber
- resin
- component
- composite fiber
- composite
- Prior art date
Links
Classifications
-
- 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
-
- 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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- 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
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- 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
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
-
- 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
-
- 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
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
-
- 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
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- 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
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
-
- 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
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- 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
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
- Materials For Medical Uses (AREA)
- Artificial Filaments (AREA)
- Paper (AREA)
Abstract
Description
本發明涉及可提供與成型性和形態穩定性有關的機械性能優異的應用產品的複合纖維及以高產率製備該複合纖維的方法。The present invention relates to a composite fiber which can provide an application product excellent in mechanical properties related to moldability and form stability, and a method of producing the composite fiber in high yield.
通常，如非織造物等的纖維聚集體的應用產品已用於各種目的，例如衛生、醫療、農業或工業目的等，尤其，在用於工業目的非織造織物的情況下，拉伸強度是非常重要的因素。為了滿足這些要求且獲得高拉伸強度的產品，通常使用增加每單位面積的重量來生產的方法。然而，在如上所述增加重量來生產的情況下，由於產品的厚度也同時增加，因此存在難以應用於同時需要小厚度和韌度的產品的問題。In general, applications of fiber aggregates such as nonwovens have been used for various purposes such as sanitary, medical, agricultural or industrial purposes, and in particular, in the case of nonwoven fabrics for industrial purposes, tensile strength is very high. Important factor. In order to satisfy these requirements and obtain a product having high tensile strength, a method of increasing the weight per unit area is generally used. However, in the case where the weight is increased as described above, since the thickness of the product also increases at the same time, there is a problem that it is difficult to apply to a product requiring a small thickness and toughness at the same time.
因此，通過將玻璃纖維、碳纖維等與其它纖維混合和混纖化來彌補使用纖維聚集體的應用產品的不足機械性能，從而具有與塑料產品的機械性能類似或更高的機械性能的產品被製造和銷售。然而，在使用這種玻璃纖維的產品的情況下，存在在加工工序中玻璃纖維從產品脫離並飛散以污染工作環境的問題。而且，據報告，玻璃纖維會引起肺癌，因此，最近對開發具有與使用玻璃纖維的產品的物理性能等同或更高的物理性能的產品而不使用玻璃纖維的要求正在增加。 （現有技術文獻） （專利文獻） （專利文獻1）韓國授權專利第10-0899613號（授權日: 2009. 5. 20） （專利文獻2）韓國授權專利第10-1357018號（授權日: 2014. 01. 23）Therefore, the glass fiber, the carbon fiber, and the like are mixed and blended with other fibers to compensate for the insufficient mechanical properties of the application product using the fiber aggregate, so that a product having mechanical properties similar to or higher than that of the plastic product is manufactured. And sales. However, in the case of using such a glass fiber product, there is a problem that the glass fiber is detached from the product and scattered in the processing process to contaminate the working environment. Moreover, it has been reported that glass fibers cause lung cancer, and therefore, there is an increasing demand for the development of products having physical properties equivalent to or higher than those of products using glass fibers without using glass fibers. (Prior Art Document) (Patent Document) (Patent Document 1) Korean Patent No. 10-0899613 (Authorization Date: 2009. 5. 20) (Patent Document 2) Korean Patent No. 10-1357018 (Authorization Date: 2014) 01. 23)
發明要解決的問題Problems to be solved by the invention
本發明是為了解決上述問題而研製的，本發明的目的在於，提供可以提供如拉伸強度、彎曲強度、彎曲彈性率等的機械性能優異且聲音吸收性、聲音分散性、水分吸收性、水分散性等良好的如纖維聚集體等的應用產品的複合纖維，且提供具有高商業性的上述複合纖維的製備方法。The present invention has been made to solve the above problems, and an object of the present invention is to provide an excellent mechanical property such as tensile strength, bending strength, flexural modulus, and the like, and sound absorption, sound dispersibility, moisture absorption, and water. A composite fiber of a product such as a fiber aggregate or the like which is excellent in dispersibility, and a method for producing the above-mentioned composite fiber having high commerciality.
用於解決問題的方案Solution to solve the problem
為了達到上述目的，本發明的複合纖維為包括第一組分樹脂和第二組分樹脂的雙組分纖維，其中，第一組分樹脂可以包括聚酯樹脂，第二組分樹脂可以包括結晶性聚烯烴樹脂，第一組分樹脂和第二組分樹脂的熔點溫度差可以為30~100℃。In order to achieve the above object, the conjugate fiber of the present invention is a bicomponent fiber including a first component resin and a second component resin, wherein the first component resin may include a polyester resin, and the second component resin may include crystallization. The polyolefin resin may have a melting point temperature difference of 30 to 100 ° C between the first component resin and the second component resin.
在本發明的一優選實施例中，在差熱分析（differential thermal analysis；DSC）時，上述結晶性聚烯烴樹脂的溶解晶體所需的焓（enthalpy）值可以為40~120J/g。In a preferred embodiment of the present invention, in the case of differential thermal analysis (DSC), the enthalpy value required for dissolving crystals of the above crystalline polyolefin resin may be 40 to 120 J/g.
在本發明的一優選實施例中，上述第一組分樹脂可以包括固有粘度為0.50~1.00dl/g且熔點為200℃以上的聚酯樹脂，上述聚酯樹脂可以包括選自聚對苯二甲酸乙二醇酯（polyethylene terephthalate；PET）樹脂、聚對苯二甲酸丁二醇酯（polybutylene terephthalate；PBT）樹脂、聚對苯二甲酸丙二醇酯（polytrimethylene terephthalate；PTT）樹脂及聚萘二甲酸乙二醇酯（polyethylene naphthalate；PEN）樹脂中的一種以上。In a preferred embodiment of the present invention, the first component resin may include a polyester resin having an intrinsic viscosity of 0.50 to 1.00 dl/g and a melting point of 200 ° C or higher, and the polyester resin may include a selected from the group consisting of polyparaphenylene Polyethylene terephthalate (PET) resin, polybutylene terephthalate (PBT) resin, polytrimethylene terephthalate (PTT) resin and polyethylene naphthalate One or more of polyethylene naphthalate (PEN) resins.
在本發明的一優選實施例中，上述聚對苯二甲酸乙二醇酯樹脂可以包括以1:0.95~1.20的摩爾比例聚合對苯二甲酸和二醇（diol）而成的聚合物。In a preferred embodiment of the present invention, the polyethylene terephthalate resin may include a polymer obtained by polymerizing terephthalic acid and a diol (diol) in a molar ratio of 1:0.95 to 1.20.
在本發明的一優選實施例中，上述第二組分樹脂可以包括包含熔點為150~170℃的結晶性聚烯烴樹脂，上述結晶性聚烯烴樹脂可以包括選自聚丙烯（polypropylene；PP）樹脂和聚乙烯樹脂中的一種以上。In a preferred embodiment of the present invention, the second component resin may include a crystalline polyolefin resin having a melting point of 150 to 170 ° C, and the crystalline polyolefin resin may include a resin selected from polypropylene (PP). And one or more of polyethylene resins.
在本發明的一優選實施例中，上述雙組分複合纖維可以為皮芯（sheath-core）型纖維、並排（side-by-side）型纖維、海島（sea-islands）型纖維或分割（segmented-pie）型纖維。In a preferred embodiment of the present invention, the two-component composite fiber may be a sheath-core type fiber, a side-by-side type fiber, a sea-island type fiber or a segmentation ( Segmented-pie) fiber.
在本發明的一優選實施例中，上述雙組分複合纖維的第一組分和第二組分的截面積比可以為1:0.5~1。In a preferred embodiment of the present invention, the cross-sectional area ratio of the first component and the second component of the two-component composite fiber may be 1:0.5-1.
在本發明的一優選實施例中，上述雙組分複合纖維可以為皮芯型纖維，其中，皮可以包括熔點為150~170℃的結晶性聚烯烴樹脂，芯可以包括熔點為200℃以上的聚對苯二甲酸乙二醇酯樹脂。In a preferred embodiment of the present invention, the two-component composite fiber may be a sheath-core type fiber, wherein the skin may include a crystalline polyolefin resin having a melting point of 150 to 170 ° C, and the core may include a melting point of 200 ° C or higher. Polyethylene terephthalate resin.
在本發明的一優選實施例中，本發明的複合纖維的平均纖度可以為4~12de，平均纖維長度可以為3~120mm，捲曲數可以為9~15個/英寸。In a preferred embodiment of the present invention, the composite fiber of the present invention may have an average fineness of 4 to 12 de, an average fiber length of 3 to 120 mm, and a crimp number of 9 to 15 per inch.
在本發明的一優選實施例中，可以對本發明的複合纖維的表面進行改性，或可以在複合纖維的表面上形成有親水塗層和/或疏水塗層。In a preferred embodiment of the invention, the surface of the composite fiber of the invention may be modified, or a hydrophilic coating and/or a hydrophobic coating may be formed on the surface of the composite fiber.
本發明的另一目的涉及在上面說明的複合纖維的製備方法，該複合纖維的製備方法可以包括：步驟1，分別準備聚酯芯片和結晶性聚烯烴芯片；步驟2，將分別熔融聚酯芯片和結晶性聚烯烴芯片而成的第一組分樹脂和第二組分樹脂投入到複合紡絲噴頭來進行複合紡絲，然後通過冷卻製備未拉伸分絲束（sub-tow）；步驟3，對上述未拉伸分絲束進行拉伸，然後賦予捲曲（crimp）；及步驟4，對經過拉伸和捲曲的分絲束進行熱固定和切割（cutting）。Another object of the present invention relates to a method for preparing a composite fiber described above, which may include: step 1, separately preparing a polyester chip and a crystalline polyolefin chip; and step 2, respectively, melting the polyester chip The first component resin and the second component resin formed of the crystalline polyolefin chip are put into a composite spinning nozzle for composite spinning, and then an unstretched sub-tow is prepared by cooling; Step 3 The unstretched tow is stretched and then crimped; and in step 4, the stretched and crimped tow is thermally fixed and cut.
在本發明的一優選實施例中，上述分絲束可以為皮芯型單絲、並排型單絲、海島型單絲或分割型單絲。In a preferred embodiment of the present invention, the split bundle may be a sheath core type monofilament, a side by side type monofilament, an island island type monofilament or a split type monofilament.
在本發明的一優選實施例中，在步驟2中，聚酯芯片的熔融可以在270~300℃的溫度下進行，結晶性聚烯烴芯片的熔融可以在230~280℃的溫度下進行。In a preferred embodiment of the present invention, in step 2, the melting of the polyester chip can be carried out at a temperature of 270 to 300 ° C, and the melting of the crystalline polyolefin chip can be carried out at a temperature of 230 to 280 ° C.
在本發明的一優選實施例中，在步驟2中，複合紡絲可以在紡絲溫度為260~290℃且卷繞速度為400~1，300m/min的條件下進行。In a preferred embodiment of the present invention, in step 2, the composite spinning can be carried out at a spinning temperature of 260 to 290 ° C and a winding speed of 400 to 1,300 m/min.
本發明的再一目的在於提供使用上述本發明的複合纖維來製備的纖維聚集體。A further object of the present invention is to provide a fiber aggregate prepared by using the above composite fiber of the present invention.
在本發明的一優選實施例中，上述纖維聚集體可以為非織造織物。In a preferred embodiment of the invention, the fiber aggregate may be a nonwoven fabric.
在本發明的一優選實施例中，上述非織造織物可以為干法成網（dry-laid）非織造織物、濕法成網（wet-laid）非織造織物或氣流成網（air-laid）非織造織物。In a preferred embodiment of the invention, the nonwoven fabric may be a dry-laid nonwoven fabric, a wet-laid nonwoven fabric or an air-laid. Nonwoven fabric.
本發明的再一目的在於提供一種壓縮成形物，上述壓縮成形物通過將上述纖維聚集體堆疊成一層或多層，然後進行壓縮成形來製成。Still another object of the present invention is to provide a compression-molded article which is produced by stacking the above-mentioned fiber aggregates into one or more layers and then performing compression molding.
在本發明的一優選實施例中，上述壓縮成形物還可包括含有與構成上述纖維聚集體的纖維組分不同的組分的纖維的纖維聚集體層。In a preferred embodiment of the present invention, the above-mentioned compression-molded article may further comprise a fiber aggregate layer containing fibers different from those constituting the fiber component of the above-mentioned fiber aggregate.
發明的效果Effect of the invention
本發明的複合纖維的如拉伸強度、彎曲強度、彎曲彈性率等的物理性能優異，複合纖維之間的粘合力良好，加工性優異，因此，適合應用於同時要求高機械性能和聲音吸收性、聲音分散性、水分吸收性及水分散性等的纖維聚集體應用產品。The conjugate fiber of the present invention is excellent in physical properties such as tensile strength, bending strength, and flexural modulus, and has good adhesion between the conjugated fibers and excellent workability, and therefore is suitable for application at the same time requiring high mechanical properties and sound absorption. Fiber aggregate application products such as sex, sound dispersibility, moisture absorption, and water dispersibility.
下面，對本發明的複合纖維進行更詳細的說明。Hereinafter, the conjugate fiber of the present invention will be described in more detail.
本發明的複合纖維為包括第一組分樹脂和第二組分樹脂的雙組分纖維，且可以為皮芯型纖維、並排型纖維、海島型纖維或分割型纖維，優選地，可以為皮芯型纖維或並排型纖維。The composite fiber of the present invention is a bicomponent fiber comprising a first component resin and a second component resin, and may be a sheath core fiber, a side by side fiber, an island island fiber or a split fiber, and preferably may be a skin Core fibers or side-by-side fibers.
上述第一組分樹脂與使用本發明的複合纖維來製備的如非織造織物等的纖維聚集體和應用該纖維聚集體的壓縮成形物的形態穩定性有關，因此，優選使用具有優異的模量的樹脂。而且，第二組分樹脂優選使用適合於通過確保與複合纖維之間的粘合性來確保纖維聚集體和/或壓縮成形物的形態穩定性和成型性的材料。The above-mentioned first component resin is related to the morphological stability of a fiber aggregate such as a nonwoven fabric prepared by using the composite fiber of the present invention and a compression molded article to which the fiber aggregate is applied, and therefore, it is preferable to use an excellent modulus. Resin. Moreover, the second component resin preferably uses a material suitable for ensuring the morphological stability and moldability of the fiber aggregate and/or the compression molded article by ensuring adhesion to the composite fiber.
而且，在本發明的複合纖維中，上述第一組分樹脂和第二組分樹脂的熔點溫度差可以為30~100℃，優選地，可以為40~90℃，此時，若熔點溫度差小於30℃，則在使用複合纖維來製備纖維聚集體時，為了通過第二組分樹脂實現複合纖維之間的接合而需要在適當的溫度氣氛下製備纖維聚集體以使第二組分樹脂適當熔化，但由於第一組分樹脂與第二組分樹脂之間的熔點溫度差小而第一組分樹脂變軟，因此可能導致纖維聚集體和使用纖維聚集體的壓縮成形物的機械性能降低且加工性和成型性變差。若熔點溫度差大於100℃，則因樹脂之間的溫度差變得不必要地大而第一組分樹脂和第二組分樹脂之間的相容性反而降低，因此可能存在難以製備雙組分複合纖維的問題。Further, in the conjugate fiber of the present invention, the difference in melting point temperature between the first component resin and the second component resin may be 30 to 100 ° C, preferably 40 to 90 ° C, and at this time, if the melting point temperature difference At less than 30 ° C, when the composite fiber is used to prepare the fiber aggregate, in order to achieve the bonding between the composite fibers by the second component resin, it is necessary to prepare the fiber aggregate under a suitable temperature atmosphere to make the second component resin suitable Melting, but since the temperature difference of the melting point between the first component resin and the second component resin is small and the first component resin is soft, it may cause mechanical properties of the fiber aggregate and the compression molded product using the fiber aggregate to be lowered. Moreover, workability and moldability are deteriorated. If the difference in melting point temperature is greater than 100 ° C, the temperature difference between the resins becomes unnecessarily large and the compatibility between the first component resin and the second component resin is rather lowered, so that it may be difficult to prepare a double group. The problem of sub-composite fibers.
上述第一組分樹脂可以包括聚酯樹脂，上述聚酯樹脂可以包括聚對苯二甲酸乙二醇酯樹脂、聚對苯二甲酸丁二醇酯樹脂、聚對苯二甲酸丙二醇酯樹脂及聚萘二甲酸乙二醇酯樹脂，優選地，可以包括選自聚對苯二甲酸乙二醇酯樹脂、聚對苯二甲酸丁二醇酯樹脂及聚萘二甲酸乙二醇酯樹脂中的一種以上，更優選地，可以包括聚對苯二甲酸乙二醇酯樹脂。The above first component resin may include a polyester resin, and the above polyester resin may include polyethylene terephthalate resin, polybutylene terephthalate resin, polytrimethylene terephthalate resin, and poly The naphthalate resin may preferably include one selected from the group consisting of polyethylene terephthalate resin, polybutylene terephthalate resin, and polyethylene naphthalate resin. Above, more preferably, a polyethylene terephthalate resin may be included.
而且，上述聚酯樹脂的固有粘度可以為0.50~1.00dl/g且熔點可以為200℃以上，優選地，固有粘度可以為0.55~0.90 dl/g且熔點可以為230~280℃，更優選地，固有粘度可以為 0.60~0.75 dl/g且熔點可以為240~265℃。此時，若聚酯樹脂的固有粘度小於0.50dl/g，則可能存在複合纖維的韌度降低的問題，若聚酯樹脂的固有粘度大於1.00dl/g，可能存在紡絲和拉伸工作性降低的問題。並且，若聚對苯二甲酸乙二醇酯樹脂的熔點小於200℃，則與第二組分樹脂之間的熔點溫度差變得太小，當製造使用複合纖維的應用產品時，可能存在加工性、成型性等降低的問題，因此，優選使用具有上述熔點的聚對苯二甲酸乙二醇酯樹脂。Further, the polyester resin may have an intrinsic viscosity of 0.50 to 1.00 dl/g and a melting point of 200 ° C or higher. Preferably, the intrinsic viscosity may be 0.55 to 0.90 dl/g and the melting point may be 230 to 280 ° C, more preferably The intrinsic viscosity may be from 0.60 to 0.75 dl/g and the melting point may be from 240 to 265 °C. At this time, if the intrinsic viscosity of the polyester resin is less than 0.50 dl/g, there may be a problem that the toughness of the conjugate fiber is lowered, and if the intrinsic viscosity of the polyester resin is more than 1.00 dl/g, spinning and stretching work may exist. Reduced problems. Further, if the melting point of the polyethylene terephthalate resin is less than 200 ° C, the temperature difference between the melting points and the melting point of the second component resin becomes too small, and when the application product using the composite fiber is manufactured, there may be processing. The problem of lowering the properties, moldability, and the like is therefore preferable, and a polyethylene terephthalate resin having the above melting point is preferably used.
而且，在聚酯樹脂為聚對苯二甲酸乙二醇酯樹脂時，可以使用本領域常用的聚對苯二甲酸乙二醇酯樹脂，優選地，可以使用包括以1:0.95~1.20的摩爾比例聚合對苯二甲酸和二醇而成的聚合物的聚對苯二甲酸乙二醇酯樹脂。Further, when the polyester resin is a polyethylene terephthalate resin, a polyethylene terephthalate resin which is commonly used in the art can be used, and preferably, a mole including 1:0.95 to 1.20 can be used. A polyethylene terephthalate resin polymerized in a ratio of terephthalic acid and diol.
其次，上述第二組分樹脂可以包括聚烯烴樹脂。Next, the above second component resin may include a polyolefin resin.
上述結晶性聚烯烴樹脂可以使用選自聚丙烯樹脂和聚乙烯樹脂中的一種以上，優選地，可以使用聚丙烯樹脂。The crystalline polyolefin resin may be one or more selected from the group consisting of a polypropylene resin and a polyethylene resin. Preferably, a polypropylene resin may be used.
而且，在差熱分析時，上述結晶性聚烯烴樹脂的溶解晶體所需的焓值可以為40~120J/g，優選地，可以為70~115J/g。Further, in the differential thermal analysis, the enthalpy value required for dissolving crystals of the above crystalline polyolefin resin may be 40 to 120 J/g, and preferably 70 to 115 J/g.
並且，上述結晶性聚烯烴樹脂的熔點可以為150~170℃，優選地，可以為155~170℃，更優選地，可以為160~170℃，此時，若結晶性聚烯烴樹脂的熔點小於150℃，則與作為第一組分樹脂的聚酯樹脂之間的熔點溫度差變得過大，用於製備雙組分複合纖維的紡絲性降低，而且第一組分樹脂和第二組分樹脂之間的相容性降低，因此難以製備雙組分複合纖維，若結晶性聚烯烴樹脂的熔點大於170℃，則第一組分樹脂和第二組分樹脂之間的熔點溫度差變小，導致加工性降低的問題。Further, the crystalline polyolefin resin may have a melting point of 150 to 170 ° C, preferably 155 to 170 ° C, and more preferably 160 to 170 ° C. In this case, if the melting point of the crystalline polyolefin resin is smaller than At 150 ° C, the temperature difference between the melting point and the polyester resin as the first component resin becomes too large, the spinnability for preparing the two-component composite fiber is lowered, and the first component resin and the second component are The compatibility between the resins is lowered, so that it is difficult to prepare the two-component composite fiber, and if the melting point of the crystalline polyolefin resin is more than 170 ° C, the temperature difference between the melting points of the first component resin and the second component resin becomes small. , resulting in a problem of reduced workability.
而且，上述複合纖維為由雙組分構成的複合纖維，纖維的第一組分和第二組分的截面積比可以為1:0.5~1，優選地，可以為1:0.7~1。此時，若第二組分的截面積比小於0.5，則可能存在複合纖維之間的結合力下降的問題，若第二組分的截面積比大於1，則第一組分的面積變得相對較小，因此複合纖維的韌度降低，並且可能存在使用複合纖維製造的產品的模量減少的問題。Further, the above composite fiber is a composite fiber composed of two components, and the cross-sectional area ratio of the first component and the second component of the fiber may be 1:0.5 to 1, preferably 1,0.7 to 1. At this time, if the cross-sectional area ratio of the second component is less than 0.5, there may be a problem that the bonding force between the composite fibers is lowered, and if the cross-sectional area ratio of the second component is more than 1, the area of the first component becomes It is relatively small, so the toughness of the composite fiber is lowered, and there may be a problem that the modulus of the product manufactured using the composite fiber is reduced.
在本發明的複合纖維的一優選實施例中，本發明的複合纖維可以為皮芯型複合纖維，其中，皮可以包括熔點為150~170℃的結晶性聚烯烴樹脂，芯可以包括熔點為200℃以上的聚對苯二甲酸乙二醇酯樹脂。In a preferred embodiment of the composite fiber of the present invention, the composite fiber of the present invention may be a sheath-core type composite fiber, wherein the skin may include a crystalline polyolefin resin having a melting point of 150 to 170 ° C, and the core may have a melting point of 200. Polyethylene terephthalate resin above °C.
並且，本發明的複合纖維的平均纖度可以為4~12de，平均纖維長度可以為3~120mm，捲曲數可以為9~15個/英寸，優選地，平均纖度可以為5~10de，平均纖維長度可以為6~100mm，捲曲數可以為10~14個/英寸，更優選地，平均纖度可以為5~9de，平均纖維長度可以為20~100mm，捲曲數可以為10~14個/英寸。此時，若複合纖維的平均纖度小於4de，則可能存在纖維聚集體和/或壓縮成形物的拉伸強度降低的問題，若複合纖維的平均纖度大於12de，則可能存在纖維聚集體和/或壓縮成形物的模量降低的問題。而且，複合纖維的纖維長度可以根據使用複合纖維製造的產品改變來應用。而且，若捲曲數小於9個/英寸，則複合纖維的彈性和膨鬆性可能會惡化，若捲曲數大於15個/英寸，則可能存在在製備纖維聚集體時在梳理過程中增加棉結（nep）的問題。Moreover, the composite fiber of the present invention may have an average fineness of 4 to 12 de, an average fiber length of 3 to 120 mm, and a number of crimps of 9 to 15 per inch. Preferably, the average fineness may be 5 to 10 de, and the average fiber length may be It may be 6 to 100 mm, the number of crimps may be 10 to 14 per inch, and more preferably, the average fineness may be 5 to 9 de, the average fiber length may be 20 to 100 mm, and the number of crimps may be 10 to 14 per inch. At this time, if the average fineness of the composite fiber is less than 4 de, there may be a problem that the tensile strength of the fiber aggregate and/or the compression molded product is lowered. If the average fineness of the composite fiber is more than 12 de, there may be fiber aggregates and/or The problem of a decrease in the modulus of the compression molded product. Moreover, the fiber length of the composite fiber can be applied depending on the product change made using the composite fiber. Moreover, if the number of crimps is less than 9 / inch, the elasticity and bulkiness of the composite fiber may be deteriorated, and if the number of crimps is more than 15 / inch, there may be an increase in the neps during the carding process when preparing the fiber aggregate ( Nep) problem.
本發明的複合纖維可以通過對纖維的表面進行改性來賦予功能性，或可以在複合纖維的表面上形成親水塗層和/或疏水塗層。The conjugate fiber of the present invention may impart functionality by modifying the surface of the fiber, or may form a hydrophilic coating and/or a hydrophobic coating on the surface of the conjugate fiber.
本發明的複合纖維的韌度可以為3.5g/d以上，伸度可以為55%以上，初始彈性率可以為3.2g/d以上，收縮率可以為5.0~6.5%，捲曲數可以為9~15個/英寸，優選地，本發明的複合纖維的韌度可以為3.70~4.10g/d以上，伸度可以為57~62%以上，初始彈性率可以為3.2~3.8g/d以上，收縮率可以為5.4~6.2%，捲曲數可以為10~14個/英寸。The conjugate fiber of the present invention may have a toughness of 3.5 g/d or more, an elongation of 55% or more, an initial elastic modulus of 3.2 g/d or more, a shrinkage ratio of 5.0 to 6.5%, and a crimp number of 9 to 9. 15/inch, preferably, the conjugate fiber of the present invention may have a toughness of 3.70 to 4.10 g/d or more, an elongation of 57 to 62% or more, and an initial elastic modulus of 3.2 to 3.8 g/d or more. The rate can be 5.4~6.2%, and the number of curls can be 10~14/inch.
在本發明的複合纖維為皮芯型複合纖維的情況下，當基於ASMT D790測量時，在相對濕度為50%且溫度為23℃的情況下，由皮芯型複合纖維製成的壓縮成形物的彎曲強度可以為5.5MPa以上且彎曲彈性率可以為430MPa以上，優選地，彎曲強度可以為7.4~12MPa且彎曲彈性率可以為480~700MPa，更優選地，彎曲強度可以為9.5~11.5MPa且彎曲彈性率可以為508~620MPa。In the case where the composite fiber of the present invention is a sheath-core type composite fiber, a compression molded product made of a sheath-core type composite fiber at a relative humidity of 50% and a temperature of 23 ° C when measured based on ASMT D790 The bending strength may be 5.5 MPa or more and the bending elastic modulus may be 430 MPa or more. Preferably, the bending strength may be 7.4 to 12 MPa and the bending elastic modulus may be 480 to 700 MPa, and more preferably, the bending strength may be 9.5 to 11.5 MPa. The bending modulus can be 508 to 620 MPa.
並且，在本發明的複合纖維為皮芯型複合纖維的情況下，當基於ASMT D638測量時，在相對濕度為50%且溫度為23℃的情況下，由皮芯型複合纖維製成的壓縮成形物的拉伸強度可以為18.5MPa以上，優選地，可以為20~27Mpa，更優選地，可以為20.2~23.5Mpa。Further, in the case where the composite fiber of the present invention is a sheath-core type composite fiber, when measured based on ASMT D638, compression is made of sheath-core type composite fiber at a relative humidity of 50% and a temperature of 23 °C. The tensile strength of the molded article may be 18.5 MPa or more, preferably 20 to 27 MPa, and more preferably 20.2 to 23.5 MPa.
如上所述的本發明的複合纖維可以通過包括如下步驟的工序製備，即，工序包括：步驟1，分別準備聚酯芯片和結晶性聚烯烴芯片；步驟2，將分別熔融聚酯芯片和結晶性聚烯烴芯片而成的第一組分樹脂和第二組分樹脂投入到複合紡絲噴頭來進行複合紡絲，然後通過冷卻製備未拉伸分絲束；步驟3，對上述未拉伸分絲束進行拉伸，然後賦予捲曲；及步驟4，對經過拉伸和捲曲的分絲束進行熱固定和切割。The conjugate fiber of the present invention as described above can be produced by a process comprising the steps of: step 1, preparing a polyester chip and a crystalline polyolefin chip, respectively; and step 2, respectively melting the polyester chip and crystallinity The first component resin and the second component resin of the polyolefin chip are put into the composite spinning nozzle for composite spinning, and then the unstretched filament bundle is prepared by cooling; and step 3, the unstretched yarn is separated The bundle is stretched and then imparted to the crimp; and in step 4, the stretched and crimped split strands are heat set and cut.
上述步驟1的聚酯芯片的特徵、種類等與如上所述的第一組分樹脂的特徵、種類等相同，且上述結晶性聚烯烴芯片的特徵、種類等與如上所述的第二組分樹脂的特徵、種類等相同，上述聚酯芯片和結晶性聚烯烴芯片是將上述第一組分樹脂和第二組分樹脂製成芯片（chip）的。The characteristics, kinds, and the like of the polyester chip of the above step 1 are the same as those of the first component resin as described above, and the characteristics, kinds, and the like of the above crystalline polyolefin chip and the second component as described above The characteristics, types, and the like of the resin are the same, and the above-mentioned polyester chip and crystalline polyolefin chip are formed by forming the above-mentioned first component resin and second component resin into chips.
在步驟2中，聚酯芯片的熔融可以在270~300℃的溫度下進行，結晶性聚烯烴芯片的熔融可以在230~280℃的溫度下進行。In the step 2, the melting of the polyester chip can be carried out at a temperature of 270 to 300 ° C, and the melting of the crystalline polyolefin chip can be carried out at a temperature of 230 to 280 ° C.
在步驟2中的複合紡絲可以在紡絲溫度為260~290℃且卷繞速度為400~1，300m/min的條件下，優選地，可以在紡絲溫度為265~285℃且卷繞速度為500~1，200m/min的條件下進行。此時，若紡絲溫度小於260℃，則可能存在包裝（pack）內壓增加和紡絲工作性降低的問題，若紡絲溫度大於290℃，則可能存在複合纖維的物理性能降低的問題。並且，若卷繞速度小於500m/min，則可能存在因伸度增加而複合纖維和/或應用該複合纖維的應用產品的物理性能降低的問題，若卷繞速度大於1，300m/min，則可能存在因未拉伸的分絲束不均勻地堆疊在罐而拉伸工作性降低的問題。The composite spinning in the step 2 can be carried out at a spinning temperature of 260 to 290 ° C and a winding speed of 400 to 1,300 m/min, preferably at a spinning temperature of 265 to 285 ° C and winding. The speed is 500~1,200m/min. At this time, if the spinning temperature is less than 260 ° C, there is a problem that the internal pressure of the pack increases and the spinning workability is lowered. When the spinning temperature is more than 290 ° C, there is a possibility that the physical properties of the composite fiber are lowered. Further, if the winding speed is less than 500 m/min, there may be a problem that the physical properties of the composite fiber and/or the application product to which the composite fiber is applied are lowered due to an increase in elongation, and if the winding speed is more than 1,300 m/min, There may be a problem that the stretch workability is lowered because the unstretched split strands are unevenly stacked in the can.
而且，步驟2的上述分絲束可以為皮芯型單絲、並排型單絲、海島型單絲或分割型單絲。Further, the above-mentioned split tow of the step 2 may be a sheath-core type monofilament, a side-by-side type monofilament, an island-in-sea type monofilament or a split type monofilament.
在步驟3中的拉伸可以通過本領域的常規拉伸方法進行，優選地，可以將未拉伸的分絲束在70~100℃的溫度下拉伸至2.5~5倍，優選地，3.0~4.5倍。此時，若拉伸比小於2.5倍，則因伸度增加而使用複合纖維的應用產品的物理性能會降低，若拉伸比大於5.0倍，則有可能出現斷絲問題，因此，優選在上述範圍內進行拉伸。The stretching in the step 3 can be carried out by a conventional stretching method in the art. Preferably, the unstretched yarn tow can be stretched to a temperature of from 70 to 100 ° C to 2.5 to 5 times, preferably, 3.0. ~4.5 times. In this case, if the draw ratio is less than 2.5 times, the physical properties of the applied product using the conjugate fiber may be lowered due to an increase in the elongation, and if the draw ratio is more than 5.0 times, the yarn breakage may occur, and therefore, it is preferable to Stretching is performed within the range.
而且，在步驟3中的捲曲可以通過本領域的常規捲曲方法進行，優選地，作為一例，可以使用捲曲箱來通過捲曲形成工序進行捲曲，該捲曲箱可以將經過拉伸的分絲束每1mm通過3，000~8，000de。Moreover, the curling in step 3 can be carried out by a conventional crimping method in the art. Preferably, as an example, a crimping box can be used to perform crimping by a crimp forming process which can stretch the stretched strands per 1 mm. Pass 3,000~8,000de.
而且，在捲曲之前，可以進一步執行通過對拉伸的分絲束進行定長熱處理工序以增加分絲束的穩定性的步驟。舉具體例子，可以使用多個熱鼓（hot drum）將分絲束接觸到熱鼓表面約5~30秒來進行熱處理，以增加分絲束的結晶度，從而提高收縮率和彈性率。Moreover, the step of performing a fixed length heat treatment process on the stretched split strands to increase the stability of the split strands may be further performed before the curling. As a specific example, a plurality of hot drums may be used to contact the filament bundle to the surface of the hot drum for about 5 to 30 seconds for heat treatment to increase the crystallinity of the filament bundle, thereby increasing the shrinkage rate and the elastic modulus.
在步驟4中的熱固定可以通過本領域的常規熱固定方法進行，優選地，作為一例，可在將經過拉伸和捲曲的分絲束投入到烤箱（oven）之後，在140~180℃的溫度下，優選地，在140~170℃的溫度下進行熱固定10~20分鐘。此時，若熱固定溫度小於140℃，則可能存在製備的最終複合纖維的收縮率增加的問題，若熱固定溫度大於180℃，則可能存在因複合纖維的分散性降低而纖維聚集體的複合纖維密度下降，工作性降低的問題，因此，優選在上述範圍內的溫度下進行熱固定。The heat setting in step 4 can be carried out by a conventional heat fixing method in the art, preferably, as an example, after the stretched and crimped strands are put into the oven at 140 to 180 ° C. At a temperature, it is preferably thermally fixed at a temperature of 140 to 170 ° C for 10 to 20 minutes. At this time, if the heat setting temperature is less than 140 ° C, there may be a problem that the shrinkage rate of the prepared final composite fiber increases. If the heat setting temperature is more than 180 ° C, there may be a decrease in the dispersibility of the composite fiber and the composite of the fiber aggregate. Since the fiber density is lowered and the workability is lowered, it is preferable to carry out heat setting at a temperature within the above range.
而且，在步驟4中的切割是根據將使用複合纖維的加工產品切割熱固定的分絲束使得複合纖維具有合適的纖維長度的工序，其可以通過本領域的常規切割方法進行，優選地，以使複合纖維的平均纖維長度在3~120mm範圍內的方式進行切割。Moreover, the cutting in the step 4 is a process of cutting the heat-fixed filament bundle according to the processed product to be used with the composite fiber so that the composite fiber has a suitable fiber length, which can be carried out by a conventional cutting method in the art, preferably, The composite fiber was cut in such a manner that the average fiber length was in the range of 3 to 120 mm.
通過上述製備方法，如上所述，可以製備平均纖度為4~12de、平均纖維長度為3~120mm、捲曲數為9~15個/英寸的本發明的複合纖維。By the above production method, as described above, the composite fiber of the present invention having an average fineness of 4 to 12 de, an average fiber length of 3 to 120 mm, and a crimp number of 9 to 15 / inch can be prepared.
可以通過使用如上所述的本發明的複合纖維來製備如非織造織物等的纖維聚集體。此時，上述纖維聚集體可以為干法成網非織造織物、濕法成網非織造織物或氣流成網非織造織物，優選地，可以為如熱粘合（thermal bonding）非織造織物、針刺（needle-punching）非織造織物等的干法成網非織造織物。Fiber aggregates such as nonwoven fabrics and the like can be prepared by using the composite fiber of the present invention as described above. In this case, the fiber aggregate may be a dry-laid nonwoven fabric, a wet-laid nonwoven fabric or an air-laid nonwoven fabric, and preferably may be, for example, a thermally bonded nonwoven fabric or a needle. A dry-laid nonwoven fabric of a needle-punching nonwoven fabric or the like.
並且，可以通過將上述纖維聚集體堆疊成一層或多層，然後進行壓縮成形來製備壓縮成形物，在製備壓縮成形物時，可以將除了上述纖維聚集體之外還包括不同種類的纖維的雙種纖維聚集體層堆疊或介入，然後進行壓縮成形來製備壓縮成形物。Further, a compression molded product may be prepared by stacking the above-mentioned fiber aggregates into one or more layers and then performing compression molding, and in the preparation of the compression molded product, two kinds of fibers of different kinds may be included in addition to the above fiber aggregates. The fiber aggregate layers are stacked or interposed, and then compression-molded to prepare a compression molded product.
在下文中，將參考實施例更詳細地描述本發明，然而，以下實施例不應被解釋為限制本發明的範圍，並且應該被解釋為有助於理解本發明。In the following, the present invention will be described in more detail with reference to the embodiments, however, the following examples should not be construed as limiting the scope of the invention.
[實施例][Examples]
實施例1：皮芯型複合纖維的製備Example 1: Preparation of sheath-core composite fiber
準備將固有粘度為0.65dl/g且熔點為252℃的聚對苯二甲酸乙二醇酯樹脂製成芯片的聚對苯二甲酸乙二醇酯芯片。A polyethylene terephthalate resin chip having an intrinsic viscosity of 0.65 dl/g and a melting point of 252 ° C was prepared as a chip polyethylene terephthalate chip.
並且，準備將在差熱分析時的溶解晶體所需的焓值為94J/g且熔點為165℃的聚丙烯樹脂製成芯片的聚丙烯芯片。Further, a polypropylene resin in which a polypropylene resin having a enthalpy value of 94 J/g and a melting point of 165 ° C required for dissolving crystals at the time of differential thermal analysis was prepared was prepared.
其次，在290℃下熔融上述聚對苯二甲酸乙二醇酯芯片，在260℃下熔融聚丙烯芯片，然後將上述兩個芯片投入到複合紡絲噴頭來進行紡絲，冷卻，以製成皮芯型未拉伸分絲束。Next, the above polyethylene terephthalate chip was melted at 290 ° C, and the polypropylene chip was melted at 260 ° C, and then the above two chips were put into a composite spinning nozzle to be spun and cooled to prepare. Core-core unstretched tow.
此時，在紡絲溫度為275℃且卷繞速度為950m/min的條件下進行複合紡絲之後，通過抽取工序加載到罐。At this time, after the composite spinning was carried out under the conditions of a spinning temperature of 275 ° C and a winding speed of 950 m / min, it was loaded into a can by an extraction process.
其次，在85℃下將上述未拉伸分絲束拉伸成3.2倍之後，在150℃下進行定長熱處理10秒。Next, the unstretched strands were drawn to 3.2 times at 85 ° C, and then subjected to a fixed length heat treatment at 150 ° C for 10 seconds.
其次，使用密封箱（stuffing box）將拉伸的分絲束捲曲。Next, the stretched tow is crimped using a stuffing box.
之後，將經過拉伸和捲曲的分絲束投入到烤箱，在165℃下熱固定15分鐘，以製備平均纖度為7de、平均纖維長度為51mm、捲曲數為11個/英寸的皮芯型複合纖維。此時，皮和芯的截面積比為1:1，其中，皮由聚丙烯樹脂構成，芯由聚對苯二甲酸乙二醇酯樹脂構成。Thereafter, the stretched and crimped strands were placed in an oven and heat-set at 165 ° C for 15 minutes to prepare a sheath-core composite having an average fineness of 7 de, an average fiber length of 51 mm, and a crimp number of 11 per inch. fiber. At this time, the cross-sectional area ratio of the sheath to the core was 1:1, wherein the sheath was composed of a polypropylene resin and the core was composed of a polyethylene terephthalate resin.
實施例2~實施例12和比較例1~10Example 2 to Example 12 and Comparative Examples 1 to 10
除了如下表1和表2所示改變作為芯組分的聚對苯二甲酸乙二醇酯芯片、作為皮組分的聚丙烯芯片、平均纖度、平均纖維長度、捲曲數及皮和芯的截面積比之外，其餘與上述實施例1相同的方法製備各個皮芯型複合纖維，以執行實施例2~12和比較例1~10。 表1
實驗例1: 複合纖維的物理性能測量Experimental Example 1: Physical property measurement of composite fibers
基於下述方法對在上述實施例和比較例中製備的皮芯型複合纖維的複合纖維的韌度、伸度、初始彈性率及收縮率進行測量，其結果示於下表3。 1） 韌度（tenacity）和伸度（elongation）的測量方法The toughness, elongation, initial elastic modulus, and shrinkage ratio of the composite fibers of the sheath-core type composite fibers prepared in the above Examples and Comparative Examples were measured based on the following methods, and the results are shown in Table 3 below. 1) Measurement methods of tenacity and elongation
使用自動拉伸試驗機（Textechno公司）以50cm/m的速度和50cm的夾持距離測量纖維的韌度和伸度。將在通過對纖維施加預定力量來拉伸纖維直到切斷時所需的載荷除以旦尼爾得的值（g/de）定義為韌度，將相對於拉伸長度的初始長度以百分比表示的值（％）定義為伸度。 2） 初始彈性率和收縮率測量方法The toughness and elongation of the fibers were measured using an automatic tensile tester (Textechno) at a speed of 50 cm/m and a clamping distance of 50 cm. The value obtained by dividing the fiber by applying a predetermined force to the fiber until the cutting is divided by the denier (g/de) is defined as the toughness, expressed as a percentage with respect to the initial length of the stretched length. The value (%) is defined as the elongation. 2) Initial elastic modulus and shrinkage measurement method
通過烏斯特測試儀（USTER TESTER）測量初始彈性率，並且將在180℃下進行乾熱處理20分鐘之前和之後的複合纖維的長度變化根據下面的數學式1進行測量。The initial modulus of elasticity was measured by a USTER TESTER, and the change in length of the composite fiber before and after the dry heat treatment at 180 ° C for 20 minutes was measured according to the following Mathematical Formula 1.
[數學式1][Math 1]
收縮率（%）=（C-D）/C ×100%Shrinkage (%) = (C-D) / C × 100%
在數學式1中，C為在熱處理之前的纖維的長度平均值，D為在熱處理之後的纖維的長度平均值。 表3
參照如上表3所示的複合纖維的物理性能結果，在實施例1~12的情況下，韌度為3.71~4.08g/d，伸度為57.3~61.7%，初始彈性率為3.3~3.6g/d，收縮率為5.5~6.0%，捲曲數為9.3~13.5個/英寸。Referring to the physical properties of the composite fiber shown in Table 3 above, in the case of Examples 1 to 12, the toughness was 3.71 to 4.08 g/d, the elongation was 57.3 to 61.7%, and the initial modulus of elasticity was 3.3 to 3.6 g. /d, the shrinkage is 5.5 to 6.0%, and the number of crimps is 9.3 to 13.5/inch.
與此相反，在皮組分的熔點大於170℃的比較例1的情況下，存在初始彈性率小於3.2g/d，即初始彈性率低的問題，在皮組分的熔點小於150℃的比較例2的情況下，存在紡絲很差的問題，因此無法測量複合纖維的物理性能。In contrast, in the case of Comparative Example 1 in which the melting point of the sheath component was more than 170 ° C, there was a problem that the initial modulus of elasticity was less than 3.2 g/d, that is, the initial modulus of elasticity was low, and the melting point of the sheath component was less than 150 ° C. In the case of Example 2, there was a problem that the spinning was poor, and thus the physical properties of the composite fiber could not be measured.
並且，在將固有粘度大於1.0dl/g的聚對苯二甲酸乙二醇酯用作芯組分的比較例3的情況下，與實施例相比，韌度和伸度降低。Further, in the case of Comparative Example 3 in which polyethylene terephthalate having an intrinsic viscosity of more than 1.0 dl/g was used as the core component, the toughness and the elongation were lowered as compared with the examples.
而且，在複合纖維的皮和芯的截面積比為1:0.45，即，小於1:0.5的比較例5的情況下，存在伸度非常差的問題。Further, in the case of Comparative Example 5 in which the cross-sectional area ratio of the sheath and the core of the conjugate fiber was 1:0.45, that is, less than 1:0.5, there was a problem that the elongation was very poor.
並且，在設計成使得複合纖維的平均纖度大於12de的比較例7和平均纖度小於4de的比較例8的情況下，實際上無法進行紡絲。Further, in the case of Comparative Example 7 in which the average fineness of the conjugate fiber was more than 12 de and Comparative Example 8 in which the average fineness was less than 4 de, the spinning was practically impossible.
而且，在捲曲數大於16個/英寸的比較例9的情況下，存在捲曲數大於15個/英寸，即，捲曲數過大的問題，在捲曲數小於9個/英寸的比較例10的情況下，存在捲曲數小的問題。Further, in the case of Comparative Example 9 in which the number of crimps was more than 16 / inch, there was a problem that the number of crimps was more than 15 / inch, that is, the number of crimps was too large, in the case of Comparative Example 10 in which the number of crimps was less than 9 / inch There is a problem that the number of curls is small.
製備例1：壓縮成形物的製備Preparation Example 1: Preparation of a compression molded product
僅使用在實施例1中製備的複合纖維來進行梳理，以製備厚度為10mm的針刺非織造織物。Only the composite fiber prepared in Example 1 was used for carding to prepare a needle-punched nonwoven fabric having a thickness of 10 mm.
其次，在200℃下對上述非織造織物進行熱處理90秒之後，進行冷壓縮，以製備壓縮成形物（平均厚度為3mm）。Next, the above nonwoven fabric was heat-treated at 200 ° C for 90 seconds, and then cold-compressed to prepare a compression-molded article (average thickness of 3 mm).
製備的壓縮成形物的平均面密度為1，230g/m2 ，平均面密度的均勻度為3CV%。The compression molded article thus prepared had an average areal density of 1,230 g/m 2 and a uniformity of average areal density of 3 CV%.
製備例2：壓縮成形物的製備Preparation Example 2: Preparation of a compression molded product
將50重量%的在上述實施例1中製備的複合纖維和50重量%的纖維長度為51mm，固有粘度為0.65 dl/g的7旦尼爾聚對苯二甲酸乙二醇酯混合併梳理，以製備厚度為10mm的針刺非織造織物。50% by weight of the conjugate fiber prepared in the above Example 1 and 50% by weight of 7 denier polyethylene terephthalate having a fiber length of 51 mm and an intrinsic viscosity of 0.65 dl/g were mixed and carded. A needled nonwoven fabric having a thickness of 10 mm was prepared.
其次，通過與上述製備例1相同的方法進行熱處理工序和冷壓縮來製備壓縮成形物（平均厚度為3mm）。Next, a heat-treated step and cold compression were carried out in the same manner as in the above Preparation Example 1 to prepare a compression-molded article (average thickness: 3 mm).
製備的壓縮成形物的平均面密度為1，250g/m2 ，平均面密度的均勻度為4.6CV%。The compression molded article thus prepared had an average areal density of 1,250 g/m 2 and a uniformity of average areal density of 4.6 CV%.
製備例3：壓縮成形物的製備Preparation Example 3: Preparation of a compression molded product
在將70重量%的在上述實施例1中製備的複合纖維和30重量%的固有粘度為0.65dl/g，纖維長度為51mm的由聚對苯二甲酸乙二醇酯製成的7旦尼爾短纖維混合之後，進行梳理，以製備厚度為10mm的針刺非織造織物。70% by weight of the conjugate fiber prepared in the above Example 1 and 30% by weight of 7 denier made of polyethylene terephthalate having an intrinsic viscosity of 0.65 dl/g and a fiber length of 51 mm After the short fibers were mixed, carding was carried out to prepare a needle-punched nonwoven fabric having a thickness of 10 mm.
其次，通過與上述製備例1相同的方法進行熱處理工序和冷壓縮來製備壓縮成形物（平均厚度為3mm）。Next, a heat-treated step and cold compression were carried out in the same manner as in the above Preparation Example 1 to prepare a compression-molded article (average thickness: 3 mm).
製備的壓縮成形物的平均面密度為1，210g/m2 ，平均面密度的均勻度為3.8CV%。The compression molded article thus prepared had an average areal density of 1,210 g/m 2 and a uniformity of average areal density of 3.8 CV%.
製備例4~14 : 壓縮成形物的製備Preparation Examples 4 to 14: Preparation of Compressed Shaped Articles
除了代替實施例1的複合纖維而使用實施例2~12的複合纖維來進行梳理之外，其餘通過與上述實施例1相同的方法製備厚度為10mm的針刺非織造織物。A needled nonwoven fabric having a thickness of 10 mm was prepared by the same method as that of the above Example 1 except that the composite fibers of Examples 2 to 12 were used instead of the composite fibers of Example 1.
其次，在200℃下對上述非織造織物進行熱處理90秒之後，進行冷壓縮，以製備壓縮成形物（平均厚度為3mm），從而分別執行製備例4~14（參照下表4）Next, the nonwoven fabric was heat-treated at 200 ° C for 90 seconds, and then subjected to cold compression to prepare a compression-molded article (average thickness of 3 mm), thereby performing Preparation Examples 4 to 14 (refer to Table 4 below).
比較製備例1Comparative preparation example 1
在將60重量%的纖維長度為70mm的9旦尼爾單絲聚丙烯纖維和40重量%的玻璃纖維混合之後，進行梳理，以製備厚度為10mm的針刺非織造織物。After mixing 60% by weight of 9 denier monofilament polypropylene fibers having a fiber length of 70 mm and 40% by weight of glass fibers, carding was carried out to prepare a needle-punched nonwoven fabric having a thickness of 10 mm.
其次，通過與上述製備例1相同的方法進行熱處理工序和冷壓縮來製備壓縮成形物（平均厚度為3mm）。Next, a heat-treated step and cold compression were carried out in the same manner as in the above Preparation Example 1 to prepare a compression-molded article (average thickness: 3 mm).
比較製備例2Comparative Preparation 2
在將50重量%的纖維長度為51mm且軟化點為110℃的4旦尼爾聚對苯二甲酸乙二醇酯粘合纖維和50重量%的纖維長度為51mm且固有粘度為0.65dl/g的由聚對苯二甲酸乙二醇酯製成的7旦尼爾短纖維混合之後，進行梳理，以製備厚度為10mm的針刺非織造織物。4 denier polyethylene terephthalate binder fibers having a fiber length of 51 mm and a softening point of 110 ° C of 50% by weight and a fiber length of 50% by weight of 51 mm and an intrinsic viscosity of 0.65 dl/g. After the 7 denier short fibers made of polyethylene terephthalate were mixed, carding was carried out to prepare a needle-punched nonwoven fabric having a thickness of 10 mm.
其次，通過與上述製備例1相同的方法進行熱處理工序和冷壓縮來製備壓縮成形物（平均厚度為3mm）。Next, a heat-treated step and cold compression were carried out in the same manner as in the above Preparation Example 1 to prepare a compression-molded article (average thickness: 3 mm).
比較製備例3~9：壓縮成形物的製備Comparative Preparation Examples 3 to 9: Preparation of Compressed Shaped Articles
除了代替實施例1的複合纖維而使用比較例1~10的複合纖維來進行梳理之外，其餘通過與上述實施例1相同的方法製備厚度為10mm的針刺非織造織物。A needled nonwoven fabric having a thickness of 10 mm was prepared by the same method as that of the above Example 1 except that the composite fibers of Comparative Examples 1 to 10 were used instead of the composite fibers of Example 1.
其次，在200℃下對上述非織造織物進行熱處理90秒之後，進行冷壓縮，以製備壓縮成形物（平均厚度為3mm），從而分別執行比較製備例3~9（參照下表4）。 表4
實驗例1: 壓縮成形物的SEM測量Experimental Example 1: SEM measurement of compression molded product
在製備例1、製備例2和製備例3中製備的壓縮成形物的切斷面的SEM照片分別順次示於圖1~圖3。The SEM photographs of the cut faces of the compression molded articles prepared in Preparation Example 1, Preparation Example 2, and Preparation Example 3 are sequentially shown in Figs. 1 to 3, respectively.
如圖1的SEM測量照片所示，在本發明的壓縮成形物的情況下，纖維緻密地形成，與此相反，在製備例2和製備例3的情況下，如圖2和圖3所示，纖維形成密度與製備例1相比較低。As shown in the SEM measurement photograph of Fig. 1, in the case of the compression molded product of the present invention, the fibers are densely formed, and conversely, in the case of Preparation Example 2 and Preparation Example 3, as shown in Figs. 2 and 3 The fiber formation density was lower than that of Preparation Example 1.
實驗例2 : 壓縮成形物的形態穩定性測量 1） 根據溫度的形態穩定性Experimental Example 2: Measurement of morphological stability of a compression molded product 1) Morphological stability according to temperature
在將上述製備例1、比較製備例1及比較製備例2中製備的壓縮成形物投入熱風乾燥機之後，在施加80g的負荷的狀態下老化1小時，然後確認形態變化。其結果示於圖4。After the compression molded product prepared in the above Preparation Example 1, Comparative Preparation Example 1 and Comparative Preparation Example 2 was placed in a hot air dryer, the mixture was aged for 1 hour while applying a load of 80 g, and then the morphology was confirmed. The result is shown in Fig. 4.
參照圖4，可以確認，在製備例1的壓縮成形物的情況下，形態穩定性在100℃和110℃下也良好，與此相反，在比較製備例1、2的情況下，形態穩定性從100℃開始降低。 2） 在耐熱環境下老化后的形態穩定性測量Referring to Fig. 4, it was confirmed that in the case of the compression molded product of Preparation Example 1, the morphological stability was also good at 100 ° C and 110 ° C, and in contrast, in the case of Comparative Preparation Examples 1 and 2, the morphology stability was observed. Reduced from 100 °C. 2) Measurement of morphological stability after aging in a heat-resistant environment
在耐熱環境中放置在上述製備例1、比較製備例1及比較製備例2中製備的壓縮成形物之後，除去外力，然後測量在80℃下經過72小時后的形態穩定性，其結果示於圖5。After the compression molded product prepared in the above Preparation Example 1, Comparative Preparation Example 1 and Comparative Preparation Example 2 was placed in a heat-resistant environment, the external force was removed, and then the morphological stability after 72 hours at 80 ° C was measured, and the results are shown in Figure 5.
參照圖5，在製備例1的情況下，似乎沒有形態變化，但在比較製備例1的情況下，大幅彎曲，比較製備例2也顯示出在端部略微翹曲的傾向。Referring to Fig. 5, in the case of Preparation Example 1, there was no morphological change, but in the case of Comparative Preparation Example 1, the bending was largely performed, and Comparative Preparation Example 2 also showed a tendency to slightly warp at the end portion.
通過測量形態穩定性可以確認由本發明的複合纖維製成的壓縮成形物的形態穩定性非常優異。It was confirmed by measurement of the morphological stability that the compression molded product made of the conjugate fiber of the present invention is excellent in morphological stability.
實驗例3 : 壓縮成形物的拉伸強度和模量測量Experimental Example 3: Tensile strength and modulus measurement of a compression molded product
對在製備例1~14和比較製備例1~12中製備的壓縮成形物的拉伸強度、彎曲強度及彎曲彈性率進行測量，其結果示於下表5。The tensile strength, bending strength, and flexural modulus of the compression-molded articles prepared in Preparation Examples 1 to 14 and Comparative Preparation Examples 1 to 12 were measured, and the results are shown in Table 5 below.
此時，基於ASTM D 638測量拉伸強度，且基於ASTM D 790測量作為模量的彎曲強度和彎曲彈性率。 表5
參照上表5，可以確認製備例1~14的壓縮成形物的拉伸強度和模量與比較製備例1~2相比整體上更優異，而且，與混合使用聚對苯二甲酸乙二醇酯纖維的製備例2~3相比，單獨使用用於壓縮成形物的纖維的製備例1表現出相對優異的機械性能。With reference to the above Table 5, it was confirmed that the tensile strength and modulus of the compression molded articles of Preparation Examples 1 to 14 were superior to those of Comparative Preparation Examples 1 and 2 as a whole, and in combination with polyethylene terephthalate. In Preparation Examples 2 to 3 of the ester fibers, Preparation Example 1 using fibers for compression molding alone exhibited relatively excellent mechanical properties.
而且，在比較製備例3的情況下，存在彎曲強度稍低且加工性較低的問題。而且，在比較製備例4的情況下，彎曲彈性率差。Further, in the case of Comparative Preparation Example 3, there was a problem that the bending strength was slightly low and the workability was low. Further, in the case of Comparative Preparation Example 4, the bending elastic modulus was poor.
並且，在比較製備例5的情況下，彎曲強度優異，但拉伸強度稍低，在比較製備例6和比較製備例7的情況下，存在彎曲強度和彎曲彈性率太低的問題。Further, in the case of Comparative Preparation Example 5, the bending strength was excellent, but the tensile strength was slightly lower. In the case of Comparative Preparation Example 6 and Comparative Preparation Example 7, there was a problem that the bending strength and the bending elastic modulus were too low.
並且，在比較製備例8的情況下，因所用的複合纖維的捲曲數大而存在出現棉結的問題。在比較製備例9情況下，因所用的複合纖維的捲曲數太小而彎曲彈性率較低。Further, in the case of Comparative Preparation Example 8, there was a problem that a neps appeared due to the large number of crimps of the conjugate fibers used. In the case of Comparative Preparation 9, the flexural modulus was low because the number of crimps of the conjugate fiber used was too small.
通過上述實施例和實驗例，可以確認本發明的複合纖維同時具有優異的機械性能和聲音吸收性、聲音分散性、水分吸收性及水分散性。可以期待通過將如上所述的本發明的複合纖維製成如非織造織物等的纖維聚集體或對上述纖維聚集體進行壓縮來提供各種應用產品，舉具體例子，本發明的複合纖維可以應用建築物內部和外部材料、土木工程材料、如飛機和船舶等運輸單元的內部和外部材料、如尿布、衛生巾和口罩等的衛生材料及如空氣過濾器和液體過濾器等的過濾器等。From the above examples and experimental examples, it was confirmed that the conjugate fiber of the present invention has both excellent mechanical properties, sound absorbing properties, sound dispersibility, moisture absorbing properties, and water dispersibility. It is expected to provide various application products by forming the composite fiber of the present invention as described above into a fiber aggregate such as a nonwoven fabric or the like, and by way of example, the composite fiber of the present invention can be applied to construction. Internal and external materials, civil engineering materials, internal and external materials for transport units such as aircraft and ships, sanitary materials such as diapers, sanitary napkins and masks, and filters such as air filters and liquid filters.
圖1為在製備例1中製備的壓縮成形物的截面的掃描式電子顯微鏡（scanning electron microscope；SEM）照片。 圖2為在製備例2中製備的壓縮成形物的截面的SEM照片。 圖3為在製備例3中製備的壓縮成形物的截面的SEM照片。 圖4和圖5分別為在實驗例2中實施的製備例1、製備例2及製備例3的形態穩定性測量結果。1 is a scanning electron microscope (SEM) photograph of a cross section of a compression molded product prepared in Preparation Example 1. 2 is a SEM photograph of a cross section of the compression-molded article prepared in Preparation Example 2. 3 is a SEM photograph of a cross section of the compression molded product prepared in Preparation Example 3. 4 and 5 are morphological stability measurement results of Preparation Example 1, Preparation Example 2, and Preparation Example 3 which were carried out in Experimental Example 2, respectively.
Claims (14)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20160116557 | 2016-09-09 | ||
| ??10-2017-0115859 | 2017-09-11 | ||
| KR10-2017-0115859 | 2017-09-11 | ||
| KR1020170115859A KR102426436B1 (en) | 2016-09-09 | 2017-09-11 | complex-fiber for the compressing molding body and Manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201912855A true TW201912855A (en) | 2019-04-01 |
| TWI798257B TWI798257B (en) | 2023-04-11 |
Family
ID=61910946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW107131947A TWI798257B (en) | 2016-09-09 | 2018-09-11 | Complex-fiber for the compressing molding body and manufacturing method thereof |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102426436B1 (en) |
| TW (1) | TWI798257B (en) |
| WO (1) | WO2019050376A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102122151B1 (en) * | 2019-03-08 | 2020-06-11 | 도레이첨단소재 주식회사 | polyester composite fiber, non-woven fabric containing the same, and manufacturing method thereof |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6053090A (en) * | 1989-07-25 | 1991-02-22 | Dunlop Limited | Manufacture of carbon fibre preform |
| JP3082338B2 (en) * | 1991-08-27 | 2000-08-28 | ソニー株式会社 | Tape cassette |
| EP1645671B2 (en) * | 2004-10-08 | 2019-10-23 | SGL Carbon SE | polymer bound fiber tow |
| JP4820211B2 (en) * | 2006-05-12 | 2011-11-24 | 帝人ファイバー株式会社 | Self-extensible thermoadhesive conjugate fiber and method for producing the same |
| KR100888276B1 (en) * | 2007-04-27 | 2009-03-11 | (주) 신우피앤씨 | Manufacturing method of a multifunctional complex filter |
| KR100899613B1 (en) | 2007-05-29 | 2009-05-27 | (주)대보휄트 | Fabric sheet using hemp fabric and method for manufacturing the same |
| JP5233053B2 (en) * | 2008-05-19 | 2013-07-10 | Ｅｓファイバービジョンズ株式会社 | Composite fiber for producing air laid nonwoven fabric and method for producing high density air laid nonwoven fabric |
| KR102015880B1 (en) * | 2011-12-16 | 2019-08-29 | 도레이 카부시키가이샤 | Mixed-fiber non-woven fabric, laminate sheet, filter, and method for producing mixed-fiber non-woven fabric |
| KR101357018B1 (en) | 2012-06-29 | 2014-02-03 | 주식회사 윈코 | Manufacturing process of multi-component nonwoven fabric felt with lightness and high-strength |
| JP6222997B2 (en) * | 2013-05-31 | 2017-11-01 | Ｅｓファイバービジョンズ株式会社 | Thermal adhesive composite fiber with excellent flexibility and non-woven fabric using the same |
| KR101350508B1 (en) * | 2013-07-22 | 2014-01-16 | 코오롱글로텍주식회사 | Thermally bondable core-sheath type composite fiber, manufacturing method thereof and use thereof |
-
2017
- 2017-09-11 KR KR1020170115859A patent/KR102426436B1/en active IP Right Grant
-
2018
- 2018-09-11 TW TW107131947A patent/TWI798257B/en active
- 2018-09-11 WO PCT/KR2018/010614 patent/WO2019050376A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| KR102426436B1 (en) | 2022-07-29 |
| WO2019050376A1 (en) | 2019-03-14 |
| TWI798257B (en) | 2023-04-11 |
| KR20180028982A (en) | 2018-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI467069B (en) | Thermoadhesive conjugate fiber and production method thereof,and fiber assembly | |
| CN113293517B (en) | Polylactic acid elastic superfine fiber non-woven material and preparation method and application thereof | |
| KR100915458B1 (en) | Flame retardant and low melting polyester fiber and method of making the same | |
| TWI686520B (en) | Polyester binder fiber | |
| JP7184537B2 (en) | fiber structure | |
| JP2018500472A (en) | Fiber ball batting and articles containing the fiber ball batting | |
| TWI784249B (en) | Polyesters with ultra-high flowability and superior stability and meltblown fibers thereof | |
| TWI798257B (en) | Complex-fiber for the compressing molding body and manufacturing method thereof | |
| TWI790279B (en) | The compressing molding body using complex-fiber and manufacturing method thereof | |
| JP2011195967A (en) | Bulky fiber for non-woven fabric | |
| TWI773835B (en) | Chopped fibers for compression moldings, compression moldings using the same, and methods for producing the same | |
| TW469312B (en) | Microfiber substrate of improved carding ability and its manufacturing method | |
| JP2003166127A (en) | Polyester heat-bondable conjugated fiber and method for producing the same | |
| JP2008069466A (en) | Adhesive sheet | |
| JP2013133571A (en) | Thermally adhesive conjugated fiber having high mechanical crimping performance and method for producing the same | |
| JP6537431B2 (en) | Core-sheath composite binder fiber | |
| JP5847503B2 (en) | Manufacturing method of molded products | |
| JP2000096417A (en) | Filament nonwoven fabric for forming, its production and container-shaped article using the nonwoven fabric | |
| JPH03234819A (en) | Lightweight sea-island conjugate type polyester yarn | |
| JP3188054B2 (en) | Mixed fiber long-fiber nonwoven fabric and method for producing the same | |
| JP5915165B2 (en) | Fiber structure | |
| JP2013060675A (en) | Method for producing solid cotton | |
| JP2013053387A (en) | Heat-bonding composite fiber and method for producing the same | |
| JP2023092474A (en) | Polyester fiber formed product | |
| JP2023086297A (en) | Thermo-adhesive composite fiber and non-woven fabric made of the same |