WO2018124832A1 - Fibre lyocell, agrégat de non-tissé comprenant celle-ci, et feuille de masque de soin comprenant celui-ci - Google Patents

Fibre lyocell, agrégat de non-tissé comprenant celle-ci, et feuille de masque de soin comprenant celui-ci Download PDF

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Publication number
WO2018124832A1
WO2018124832A1 PCT/KR2017/015775 KR2017015775W WO2018124832A1 WO 2018124832 A1 WO2018124832 A1 WO 2018124832A1 KR 2017015775 W KR2017015775 W KR 2017015775W WO 2018124832 A1 WO2018124832 A1 WO 2018124832A1
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Prior art keywords
lyocell
fiber
length
nonwoven
monofilament
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PCT/KR2017/015775
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English (en)
Korean (ko)
Inventor
정종철
김우철
진상우
이상열
이상목
Original Assignee
코오롱인더스트리 주식회사
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Application filed by 코오롱인더스트리 주식회사 filed Critical 코오롱인더스트리 주식회사
Priority to US16/474,419 priority Critical patent/US20190345641A1/en
Priority to CN201780081663.2A priority patent/CN110139955A/zh
Priority to JP2019535365A priority patent/JP2020504791A/ja
Priority to EP17885495.6A priority patent/EP3564417A4/fr
Publication of WO2018124832A1 publication Critical patent/WO2018124832A1/fr

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D04H1/4258—Regenerated cellulose series
    • 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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
    • 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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/02—Preparation of spinning solutions
    • 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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • 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
    • D04H1/425—Cellulose series

Definitions

  • the present invention relates to a lyocell fiber, a nonwoven fiber assembly comprising the same, and a mask pack sheet comprising the same.
  • Fiber refers to a natural or artificial linear object that is pliable and thin in shape and has a large ratio of length to thickness. These fibers are divided into long fibers, brisket fibers, and short fibers in terms of their shape, and are divided into natural fibers and artificial fibers in terms of raw materials.
  • the regenerated fibers in these artificial fibers not only have excellent touch and fit, but also have a much faster moisture absorption and discharge ability than cotton, and thus have been widely used as raw materials for coating.
  • the rayon fiber of the regenerated fiber has excellent gloss and color development and can realize a touch equivalent to that of natural fibers, and has been widely used in the past because it is recognized as a material harmless to the human body.
  • these rayon fibers had the characteristics of materials that shrink and wrinkle well, and many chemicals are used in the manufacturing process and in the process of melting wood pulp, which contaminates the environment during work and wastewater treatment. Had a problem causing.
  • lyocell fibers manufactured from natural pulp and amine oxide hydrates have been introduced. These lyocell fibers have superior tensile properties and tactile properties compared to conventional recycled fibers, and do not generate any contaminants in the production process, and the amine oxide solvents used are recyclable and biodegradable when disposed. As an eco-friendly fiber, it is used in various fields.
  • lyocell fiber can only produce products with a circular cross-section, and it is expected that it can exhibit various physical properties according to the cross-sectional shape of the lyocell fiber. Is required.
  • the present invention provides a lyocell fiber having a flat yarn having a cross section of a monofilament or a flat yarn having a curvature, thereby providing excellent bending properties for industrial materials, good texture and soft gloss for clothing or interior applications, and mask pack nonwoven fiber assembly. It can provide effects having excellent physical properties such as transparency, skin adhesion, solvent absorption and retention properties such as moisture, and smooth surface feel.
  • the present invention is a preferred embodiment, comprising a lyocell multifilament prepared by spinning a lyocell spinning dope comprising a cellulose pulp and a solvent, the monofilament constituting the multifilament has a cross section of the central long axis (L1) And a central short axis S1, the length ratio of the central long axis L1 and the central short axis S1 is 1.5: 1 to 10.5: 1, and the length of the central long axis L1 and both ends of the central long axis are It provides a lyocell fiber characterized in that the ratio of the length of the straight line (L2) is 1.0: 1 ⁇ 1.5: 1.
  • the length of the central long axis L1 of the monofilament may be 12 to 42 ⁇ m, and the length of the central short axis S1 may be 4 to 7 ⁇ m.
  • the monofilament may have a fineness of 1.0 to 4.0 denier, and a value obtained by dividing the circumferential length of the monofilament by the fineness of 22 ⁇ m / denier or more.
  • a nonwoven fiber assembly comprising lyocell fibers, wherein the monofilament constituting the lyocell fibers has a central long axis (L1) and a central short axis (S1),
  • the ratio of the length of the central long axis L1 and the central short axis S1 is 1.5: 1 to 10.5: 1, and the ratio of the length of the central long axis L1 and the length of the straight line L2 at both ends of the central long axis is 1.0.
  • the length of the central long axis L1 of the monofilament may be 12 to 42 ⁇ m, and the length of the central short axis S1 may be 4 to 7 ⁇ m.
  • the monofilament may have a fineness of 1.0 to 4.0 denier, and a value obtained by dividing the circumferential length of the monofilament by the fineness may be 24.5 to 32 ⁇ m / denier.
  • the fineness of the lyocell fiber may be 1.0 to 4.0 denier.
  • the fiber length of the lyocell fibers may be 36 to 40mm.
  • the crimp number of the lyocell fiber may be 8 to 12 cpi.
  • the lyocell fiber may have an emulsion content of 0.1 to 0.4 wt% based on 100 wt% of the lyocell fiber.
  • the basis weight of the nonwoven fiber aggregate may be 30 to 60 g / m 2 .
  • the thickness of the nonwoven fiber assembly may be 0.3 to 0.5 mm.
  • the nonwoven fiber assembly may have a water absorption of 1000 to 1600% based on the weight of the lyocell fiber.
  • the nonwoven fiber assembly may have a transparency of 80 to 84% after water treatment.
  • the nonwoven fiber aggregate may have a transparency of 88 to 94% after the essence treatment.
  • the nonwoven fiber aggregate may have a skin adhesion of 3.6 to 4.2 gf after water treatment.
  • the nonwoven fiber assembly may have a skin adhesion after the essence treatment is 4.5 to 5.3 gf.
  • the nonwoven fiber aggregate may have an emulsion content of 0.001 wt% or less relative to 100 wt% of the nonwoven fiber aggregate.
  • a mask pack sheet using the aforementioned nonwoven fiber assembly is provided.
  • the present invention provides a lyocell fiber having a flat yarn having a cross section of a monofilament or a flat yarn having a curvature, thereby exhibiting physical properties that could not be provided in a conventional lyocell fiber having a circular cross section, which is excellent for industrial materials. Bending properties, good texture and soft gloss for clothing and interior applications, and mask pack non-woven fiber aggregate applications, such as transparency, skin adhesion, solvent absorption and retention properties such as moisture, such as to provide an excellent physical properties such as smooth surface feel can be provided It became.
  • FIG. 1 schematically shows a cross section of a monofilament contained in a lyocell fiber according to an embodiment of the present invention.
  • Figure 2 is a photograph showing a cross section of the lyocell fiber manufactured according to an embodiment of the present invention.
  • the present invention comprises a lyocell multifilament prepared by spinning a lyocell spinning dope comprising a cellulose pulp and a solvent, the monofilament constituting the multifilament has a central long axis (L1) and a central short axis (S1)
  • the length ratio of the central long axis (L1) and the central short axis (S1) is 1.5: 1 to 10.5: 1, the length of the central long axis (L1) and the length of the straight line (L2) of both ends of the central long axis
  • the ratio is 1.0: 1 to 1.5: 1.
  • the lyocell fiber of the present invention comprises a monofilament having a flat yarn cross section, the cross section of which is shown in FIG. 1.
  • the cross section becomes a flat yarn having a flat shape
  • the length L1 of the central long axis is L1. If the ratio of the length of the) and the length of the straight line (L2) at both ends of the central long axis is 1: 1, it becomes a flat yarn of straight line, when the ratio exceeds 1: 1, it becomes a flat yarn with curvature will be.
  • the cross section of the monofilament is a flat yarn or a flat yarn with curvature, thereby being able to express physical properties that a conventional lyocell fiber of a circular cross section could not express.
  • excellent bending for industrial materials Properties such as good texture and soft gloss properties for clothing and interior applications, excellent properties such as transparency, skin adhesion, solvent absorption and retention, such as moisture, and smooth surface feel can be expressed in the use of mask pack nonwoven fabric aggregate.
  • the length ratio of the central long axis (L1) and the central short axis (S1) should satisfy the range of 1.5: 1 to 10.5: 1, if 1.5: 1 If the ratio is less than the flat yarn, the characteristics of the flat yarn is difficult to express a significantly different characteristics, and if the ratio exceeds 10.5: 1 has the disadvantage that the fineness of the final fiber can not be matched will be.
  • the ratio of the length of the central long axis (L1) and the length of the straight line (L2) at both ends of the central long axis is 1.0: 1 to 1.5: 1, preferably 1.1: 1 to 1.5: 1 It may be.
  • the ratio of the curvature exceeds 1.5: 1, due to the excessively large curvature, the adhesion between the fibers is lowered, so that the effect of the flat yarn is reduced.
  • the monofilament of the present invention is characterized in that the length of the central long axis (L1) is 12 ⁇ 42 ⁇ m, the length of the central short axis (S1) is 4 ⁇ 7 ⁇ m, monofilament defined in the present patent It is the range which can manufacture fiber in the fineness range of 1.0-4.0 denier.
  • the length of the central short axis (S1) of less than 4 ⁇ m is difficult to implement due to the limitation of the manufacturing process of the detention, and if the length of the central long axis (L1) exceeds 42 ⁇ m, fineness should be increased, but in terms of fiber fineness The meaning is not great.
  • the length of the central short axis S1 exceeds 7 ⁇ m and the length of the central long axis L1 is less than 12 ⁇ m, the specific surface area may be lowered and the adhesion between the fibers may decrease.
  • the monofilament of the present invention has a fineness of 1.0 to 4.0 denier, and a value obtained by dividing the cross circumferential length of the monofilament by fineness is 22 ⁇ m / denier or more, preferably 24.5 to 32 ⁇ m / denier, As the cross sectional length according to fineness increases, the specific surface area of the monofilament itself increases, so when applied to the product, it can be applied to an effective field. For example, the mask pack nonwoven fabric assembly has excellent absorption and retention power for essence. You will have an advantage.
  • the lyocell fiber as described above is biodegradable, it is environmentally friendly, and the lyocell fiber of the present invention has a flat circular cross section of a monofilament or a flat circular cross section with curvature, and thus a general circular shape.
  • the bending property to withstand external forces is stronger, and the fiber strands reflect light like a mirror, giving a shiny luster to the surface.
  • the tactile feel is soft due to the special cross-sectional effect, which can be applied to various fields such as car seat covers, seat covers, carpets, curtains, industrial materials such as various garments, and clothes.
  • the lyocell fiber according to the present invention when manufactured in the form of staple short fibers and used as a nonwoven fiber assembly for a mask pack, the most important physical properties of the nonwoven fiber assembly for a mask pack include transparency, skin adhesion, essence absorption and retention, and soft touch. There is an effect that can exhibit very excellent physical properties compared to other materials.
  • the thickness of the fiber becomes smaller and when manufacturing the nonwoven fiber aggregate, the nonwoven fiber aggregate thickness becomes thinner than the general circular cross section fiber at the same unit weight. It has very good characteristics.
  • the absorbency for solvents such as essence is high, and thus, the essence retention ability also has an excellent advantage, which can represent a great advantage over other materials applied to the mask pack nonwoven fabric assembly.
  • the fineness may be 1.0 to 4.0 denier. At this time, if the fineness of the lyocell fiber is less than 1.0 denier, difficulty in producing the lyocell fiber occurs. If the fineness of the lyocell fiber is more than 4.0 denier, it is more than the general fineness applied to the mask pack, such as skin adhesion and essence absorption power. There is no distinction in characteristics, and the physical properties show the general level.
  • the lyocell fibers may have a fiber length of 36 to 40mm.
  • the lyocell fiber is used as a nonwoven fiber assembly for a mask pack within the fiber length range, there is an advantage in the processability in the carding process of the nonwoven fiber assembly manufacturing process.
  • the crimp number of the lyocell fiber may be 8 to 12 cpi.
  • Crimp number may be 5 to 20 cpi, preferably 8 to 12 cpi.
  • the lyocell fiber may have an oil content of 0.1 to 0.4 wt% based on 100 wt% of the lyocell fiber.
  • the emulsion When the emulsion satisfies the weight% range, it reduces the friction generated in the process of forming the filament to be described later as a crimp tow, so as to form a good crimp between fibers.
  • the carding properties are improved in the production of the nonwoven fiber assembly.
  • the basis weight of the nonwoven fiber assembly may be 30 to 60 g / m 2 , the thickness may be 0.3 to 0.5 mm.
  • the basis weight and thickness range is an optimal range for improving the water absorption, transparency and adhesion of the liquid composition in the nonwoven fiber assembly comprising the lyocell fibers satisfying the fineness, fiber length, number of crimps, emulsion content of the lyocell fibers Means.
  • the nonwoven fiber assembly may have a water absorption of 1000 to 1600% relative to the weight of the lyocell fiber.
  • the lyocell fiber has a higher water absorption than other fibers corresponding to hydrophilicity.
  • the lyocell fiber satisfies the basis weight and thickness range of the nonwoven fiber assembly while satisfying the characteristics of the lyocell fiber, the lyocell fiber The water absorption of the nonwoven fiber assembly comprising a can be absorbed in accordance with the above range.
  • the non-woven fiber assembly may have a transparency after the water treatment may be 80 to 84% compared to the water treatment, and the transparency after the essence treatment may be 88 to 94% compared to the essence treatment.
  • the transparency of the nonwoven fiber assembly corresponds to 1.0 to 4.0 deniers of the lyocell fibers, and the thickness of the nonwoven fiber assembly including the lyocell fibers is also thinner than that of the general one, so that liquid compositions such as moisture and essence may be used.
  • Supported by the nonwoven fiber assembly may have a soft feel and transparency within the range of the transparency.
  • the nonwoven fiber assembly may have a skin adhesion after the water treatment of 3.6 to 4.2 gf, and may have a skin adhesion after the essence treatment of 4.5 to 5.3 gf.
  • the skin adhesion of the nonwoven fiber assembly also satisfies the characteristics of the lyocell fibers, and may satisfy the above range by the basis weight and thickness of the nonwoven fiber assembly including the same.
  • the nonwoven fiber aggregate has an oil content of 0.001 wt% or less relative to 100 wt% of the nonwoven fiber aggregate.
  • the nonwoven fiber assembly has a content ratio as described above since most of the oil agent contained in the lyocell fibers is washed away when acceptance of the spunlace process in the nonwoven fabric manufacturing process.
  • nonwoven fiber assembly including the lyocell fibers will be described in detail through the method of manufacturing the nonwoven fiber assembly.
  • the present invention comprises the steps of spinning a lyocell spinning dope comprising (S1) cellulose pulp and a solvent; (S2) solidifying the lyocell spinning dope spun in the step (S1) to obtain a lyocell multifilament; (S3) washing the lyocell multifilament obtained in the step (S2); And (S4) emulsifying the lyocell multifilament washed in the step (S3); (S5) obtaining a crimped tow by crimping the lyocell multifilament emulsified in the step (S4) through a stuffer box; (S6) drying and cutting the crimp tow obtained in the step (S5) to obtain a lyocell staple fiber; And (S7) manufacturing a lyocell staple fiber obtained in the step (S6) into a nonwoven fiber assembly, wherein the monofilament constituting the multifilament has a central long axis of a cross section thereof.
  • the length ratio of the central long axis (L1) and the central short axis (S1) is 1.5: 1 to 10.5: 1, the length of the central long axis (L1) of the central long axis
  • the ratio of the length of the straight line (L2) at both ends can be prepared by the method for producing a lyocell fiber, characterized in that 1.0: 1 ⁇ 1.5: 1.
  • the lyocell fiber can be prepared by spinning the spinning dope, wherein the solvent is N-methyl. It can be selected from an aqueous solution of morpholine-N-oxide (NMMO) or an ionic solvent.
  • NMMO morpholine-N-oxide
  • the method for preparing lyocell fibers of the present invention using the NMMO aqueous solution will be described. It explains in detail.
  • Step (S1) is a step of spinning a lyocell spinning dope comprising cellulose pulp and NMMO aqueous solution.
  • the lyocell spinning dope is 6 to 16% by weight of cellulose pulp;
  • N-methylmorpholine-N-oxide aqueous solution may include 84 to 94% by weight, the cellulose pulp may have an alpha-cellulose content of 85 to 97% by weight, and a degree of polymerization (DPw) of 600 to 1700. have.
  • the content of cellulose pulp is less than 6% by weight, it is difficult to realize the fibrous characteristics, and if it is more than 16% by weight, it may be difficult to dissolve in the aqueous phase.
  • the content of the N-methylmorpholine-N-oxide aqueous solution in the lyocell spinning dope is less than 84% by weight, the dissolution viscosity is not large, which is not preferable. It can be difficult to produce uniform fibers.
  • the weight ratio of N-methylmorpholine-N-oxide and water in the N-methylmorpholine-N-oxide aqueous solution may be 93: 7 to 85:15.
  • the weight ratio of the N-methylmorpholine-N-oxide and water is greater than 93: 7, the dissolution temperature is increased, so that decomposition of cellulose may occur when the cellulose is dissolved.
  • the weight ratio is less than 85:15, the dissolution performance of the solvent is poor. It may be lowered and the dissolution of cellulose may be difficult.
  • the spinning dope described above is used to discharge it from the spinning nozzle of the spinneret. At this time, the spinneret serves to discharge the spinning dope on the filament to the coagulating liquid in the coagulation bath through the air gap section.
  • the spinneret may have a shape in which the slit-shaped hole having a flat and long shape of the detention hole is bent in a C shape.
  • the arrangement of the detention holes in the detention is very important and should be designed so that all the holes can come into contact with the cooling air during the air quenching and do not interfere with each other.
  • Discharging the spinning dope from the spinneret may be performed at a spinning temperature of 80 to 130 ° C.
  • Step (S2) is a step of solidifying the lyocell spinning dope spun in the step (S1) to obtain a lyocell multifilament
  • the solidification of the step (S2) is the air quenching to supply the cooling air to the spinning dope to solidify First solidification step by (Q / A);
  • a second coagulation step of dipping the first coagulated spinning dope in a coagulating solution.
  • step (S1) after discharging the spinning dope through the spinneret, it can be passed through the air gap section of the space between the spinneret and the coagulation bath.
  • the air gap section is supplied with cooling air from the air cooling unit located inside the donut-shaped mold to the inside of the mold and to the outside, and may be primarily solidified by air quenching for supplying the cooling air to the spinning dope.
  • the factors affecting the properties of the lyocell multifilament obtained in step (S2) are the temperature and wind speed of the cooling air in the air gap section, and the solidification of the step (S2) is 4 ⁇ 15 °C temperature and 5 ⁇
  • the cooling air having a wind speed of 10 m / s may be supplied to the spinning dope to solidify.
  • the temperature of the cooling air during the first solidification is less than 4 °C, the surface of the detention is cooled, the cross section of the lyocell multifilament is uneven and the spin processability is not good, if the temperature is above 15 °C, the primary solidification by the cooling air is not enough As a result, the spinning processability is not good.
  • the flat yarn is very sensitive to the wind speed of air quenching during spinning, and if the wind speed of cooling air is less than 5m / s during the first solidification, the primary solidification by the cooling air is not enough, resulting in poor spinning processability, resulting in trimming. If it is more than 10 m / s, since the radiation dope discharged from the detention is a flat yarn cross-section, the length of the central short axis is small, so that it is shaken by air quenching and the spinning processability is not good, the cutting may occur.
  • the spinning dope may be supplied to a coagulation bath containing a coagulation liquid and secondary coagulation may proceed.
  • the temperature of the coagulation liquid may be 30 °C or less. This is to ensure that the solidification rate is properly maintained because the secondary solidification temperature is not higher than necessary.
  • the coagulating solution is not particularly limited because it can be prepared and used in a conventional composition in the technical field to which the present invention belongs.
  • Step (S3) is a step of washing the lyocell multifilament obtained in the step (S2).
  • the lyocell multifilament obtained in the step (S2) after introducing the lyocell multifilament obtained in the step (S2) to the traction roller, it can be washed by introducing into the washing bath.
  • washing liquid of 0 to 100 °C temperature
  • water may be used as the washing liquid, if necessary, other addition It may further include the component.
  • Step (S4) is an step of tanning the lyocell multifilament washed in the step (S3), it can be dried after the tanning.
  • the tanning takes the form of the multifilament being buried over the surface of the roller with the emulsion, and the speed of the tanning roller adjusts the amount of emulsion to the filament.
  • the emulsion reduces the friction that occurs when the filaments are in contact with the drying roller and the guide, winding or crimp stage and allows the crimp to form well.
  • Step S5 is a step of obtaining a crimped tow by crimping the lyocell multifilament treated in the step S4.
  • Crimping is a process of imparting crimp to a multifilament. Specifically, crimping can be performed using a stuffer box to obtain crimp tow with 8-12 crimps per inch.
  • step (S5) it may be to supply steam to the lyocell multifilament and to crimp by applying pressure.
  • the lyocell multifilament is passed through a steam box (Steam box), the steam is supplied to 0.1 ⁇ 1.0kgf / cm 2 to raise the temperature and then press the pressure (Press Roller) at a pressure of 1.5 ⁇ 3.0kgf / cm 2 By crimping using), a crimp is formed in the stopper box.
  • Steam box Steam box
  • Press Roller press the pressure
  • the crimp is not formed smoothly, and if more than 1.0 kgf / cm 2, the temperature in the stopper box rises to 120 ° C or more so that the filaments are stuck together and do not pass through the stopper box.
  • the pressure for pressing the pressing roller is less than 1.5 kgf / cm 2 The desired number of crimps are not formed, 3.0 kgf / cm 2 If exceeded, the pressing force is so strong that the filament may not pass through the stopper box.
  • step (S6) step is to dry and cut the crimp tow obtained in the step (S5) to obtain a lyocell staple fiber.
  • the crimp tow is dried using a Lattice dryer, and subjected to a cutting process to form lyocell staple fibers.
  • Step (S7) is a step of manufacturing the lyocell staple fibers obtained in the step (S6) to a nonwoven fiber assembly.
  • the lyocell staple fibers are entangled by carding and spunlacing to produce a nonwoven fiber assembly.
  • the present invention can be used as a cosmetic mask pack using the mask pack sheet.
  • the mask pack uses the mask pack sheet as a support sheet, which not only improves skin adhesion and fit even in the face with a lot of curvature, but also provides excellent nutrition for moisture and essence to provide effective nutrition to the face. Can be.
  • the color when the wet transparency is improved and closely adheres to the user's face, the color may be closer to the user's face, thereby making the appearance less noticeable and the appearance after wearing the mask pack may be beautiful.
  • the dope was prepared.
  • the spinning dope was maintained at the spinning temperature of 110 °C in the spinning nozzle of the spinneret having a plurality of flat slit-shaped unit holes having a curvature, and the discharge amount of the spinning dope so that the single fineness of the monofilament is 2.0 denier Spinning was controlled by spinning speed.
  • Spinning dope on the filament discharged from the spinning nozzle was supplied to the coagulating liquid in the coagulation bath through the air gap section. At this time, the cooling air in the air gap section first solidifies the spinning dope at 8 °C temperature and 57m / s wind speed.
  • the coagulating solution was used at a temperature of 25 °C, concentration of 85% by weight of water and 15% by weight of NMMO.
  • the filament stretched in the air layer through the towing roller was washed by the washing liquid sprayed from the washing machine to remove the remaining NMMO, and to keep the oil content 0.2% by uniformly applying the oil to the filament. It was dried at 150 °C to prepare a lyocell fiber comprising a multifilament consisting of a monofilament having a curvature flat yarn cross section.
  • Example 2 In the same manner as in Example 1, except that the fineness of the monofilament was 1.6 denier, a lyocell fiber including a multifilament made of a monofilament having a curvature flat yarn cross section was prepared.
  • a lyocell fiber was prepared in the same manner as in Example 1, except that the fineness of the monofilament was 2.4 denier, including the multifilament made of the monofilament having the curvature flat yarn cross section.
  • Example 2 The same method as in Example 1, except that one circular hole was used as the unit hole, and a spinneret having a plurality of unit holes was used, and the air quenching wind speed was 15 m / s so that the fineness of the monofilament was 2.0 denier.
  • a lyocell fiber including a multifilament made of a monofilament having a circular cross section having a diameter of 13.78 ⁇ m in cross section was prepared.
  • a lyocell fiber comprising a multifilament made of a monofilament having a circular cross section having a diameter of 15.06 ⁇ m in cross section was manufactured in the same manner as in Comparative Example 1, except that the fineness of the monofilament was 2.39 denier.
  • Example 2 The same procedure as in Example 1 was carried out except that the ratio between the central long axis L1 of the monofilament and the straight line L2 at both ends of the central long axis was less than 1.0.
  • Example 2 The procedure was the same as in Example 1 except that the length of the central long axis L1 of the monofilament was set to 11 ⁇ m in length and the central minor axis S1 was 3 ⁇ m in length.
  • a lyocell fiber was prepared.
  • a small amount of fiber was sampled, rolled together with black cotton, and inserted into a hole in a plate capable of cutting the cross section, and then cut so that the cross section was not pushed with a razor blade.
  • the cross section was enlarged and observed ( ⁇ 500), and the image was stored with a digital camera.
  • the cross-sectional image of the fiber was determined using the Olympus soft imaging solution program, and the length and area of the major and minor axes, the fiber thickness, and the circumferential length were analyzed.
  • Fineness (De) [monofilament cross-sectional area of lyocell fiber ( ⁇ m 2 ) ⁇ density of lyocell fiber (g / cm 3 ) ⁇ 9000 (m)] / 1000000
  • the lyocell fibers of Examples 1 to 3 consisting of monofilaments having a flat yarn cross section with curvature
  • the lyocell fibers of Comparative Examples 1 and 2 consisting of monofilaments having a circular cross section.
  • the circumferential length was larger. This means that the specific surface area of the fiber is large, thereby realizing excellent physical properties as described above.
  • the fiber thickness is small in the same fineness, it can also implement excellent physical properties.
  • the lyocell fibers of Examples 1 to 3 do not excessively increase the curvature compared to the lyocells of Comparative Examples 3 to 6, so that the adhesion between the fibers is excellent, the effect of the flat yarn is improved, and the fiber fineness shows an excellent effect in terms of fiber fineness. It can indicate the effect range.
  • the lyocell fibers of Examples 1 to 3 have a large specific surface area and a small fiber thickness, and can be widely applied to fields requiring such characteristics.
  • Stuffer box compression ruler at a pressure of 2.0 kgf / cm 2 through a preheating state to pass the lyocell fibers prepared in the above Examples and Comparative Examples through a steam box (pressure condition 0.2kgf / cm 2 ) to give a temperature to the tow
  • a steam box pressure condition 0.2kgf / cm 2
  • the prepared lyocell staple fiber was finally manufactured through a carding and spun lacing process, which is a nonwoven fiber aggregate manufacturing process, and the nonwoven fiber aggregate basis weight was adjusted to the numerical values shown in Table 2 by adjusting raw material input and processing speed.
  • the nonwoven fiber aggregate basis weight deviation was in the range of ⁇ 10%.
  • the prepared nonwoven fiber aggregates were measured in the following physical properties and are shown in Table 2 below.
  • the nonwoven fiber aggregates were sampled at 5 cm wide and 20 cm high, and weighed to calculate the basis weight.
  • Basis weight nonwoven fiber aggregate sample weight measurement ⁇ 100
  • Sample preparation The nonwoven fiber assembly is immersed in water or essence for 10 minutes.
  • Haze meter (Nippon Denshoku Industry, NDH-5000), which is a light transmittance device, was used to measure the transparency of the nonwoven fiber assembly, and the transmittance of the wavelength of nm was measured.
  • the nonwoven fiber assembly is cut into 25mm ⁇ 150mm size, immersed in water or essence for 10 minutes and adhered to human arm. Immediately after adhesion, Instron (Instron, Instron-3365) was used to measure the adhesive force (unit gf) while removing the nonwoven fiber assembly from the skin.
  • Instron Instron, Instron-3365
  • Example 1 Basis weight (gsm) Thickness (mm) Transparency (%) Absorbency (%) Skin adhesion (%)
  • Example 1 50 0.42 Water 82 Essence 90 Water 1200 Essence 1400 Water 3.8 Essence 4.9
  • Example 2 40 0.39 Water 84 Essence 92 Water 1100 Essence 1250 3.7 essences of water 4.7
  • Example 3 60 0.46 Water 81 Essence 88 Water 1300 Essence 1500 Water 4.0 Essence 5.1 Comparative Example 1 40 0.45 Water 79 Essence 88 Water 950 Essence 1000 Water 3.3 essence 4.3 Comparative Example 2 50 0.5 Water 78 Essence 86 Water 1000 Essence 1100 Water 3.5 Essence 4.5 Comparative Example 3 Not measurable - - - - Comparative Example 4 50 0.44 Water 80 Essence 88 Water 1200 Essence 1400 Water 3.6 Essence 4.6 Comparative Example 5 Not measurable - - - - Comparative Example 6 60 0.52 Water 74 Essence 82 Water 1400 Essence 1600 Water 3.8 Essence 4.8
  • Examples 1 to 3 exhibited excellent performance in transparency, water absorption, and adhesion while being thinner than the nonwoven fiber aggregates of Comparative Examples 1 to 2 due to the effect of flat fiber cross sections having curvature. .
  • Comparative Example 4 is excessively high curvature of the fiber, the thickness of the non-woven fabric assembly is increased, the physical properties except the absorbency showed similar results to the appropriate Comparative Examples 1 and 2.
  • Comparative Example 6 since the thickness of the curvature fiber is increased, the thickness of the nonwoven fiber assembly is increased, and thus, compared with Example 3, physical properties are not improved, and thus it is expected that there will be a problem in using as a mask sheet.
  • the present invention is applicable to a mask pack sheet.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)

Abstract

La présente invention concerne une fibre lyocell, un agrégat de non-tissé comprenant celle-ci, et une feuille de masque de soin comprenant celui-ci. La présente invention concerne une fibre lyocell qui présente une section monofilament qui est un fil plat ou un fil plat doté d'une courbure, un agrégat de non-tissé comprenant celle-ci, et une feuille de masque de soin comprenant celui-ci, ce qui lui permet de présenter des caractéristiques physiques qui ne pourraient pas être fournies par des fibres lyocell à section transversale circulaire existantes. Par conséquent, la présente invention peut fournir un effet de présenter d'excellentes caractéristiques physiques telles que des propriétés de flexion destinée à une utilisation de matériau industriel; de bonnes propriétés de texture et de brillant léger destinées à une utilisation dans les vêtements et en intérieur; la transparence, l'adhérence à la peau, l'absorption et la rétention de solvants tels que l'eau, le toucher de surface lisse destiné à être utilisé dans un agrégat de non-tissé d'un masque de soin, etc.
PCT/KR2017/015775 2016-12-29 2017-12-29 Fibre lyocell, agrégat de non-tissé comprenant celle-ci, et feuille de masque de soin comprenant celui-ci WO2018124832A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/474,419 US20190345641A1 (en) 2016-12-29 2017-12-29 Lyocell fiber, nonwoven fibrous aggregate containing the same, and a mask pack sheet containing the same
CN201780081663.2A CN110139955A (zh) 2016-12-29 2017-12-29 莱赛尔纤维、含有其的非织造纤维集合体，以及含有非织造纤维集合体的面膜片
JP2019535365A JP2020504791A (ja) 2016-12-29 2017-12-29 リヨセル繊維、これを含む不織繊維集合体およびこれを含むマスクパックシート
EP17885495.6A EP3564417A4 (fr) 2016-12-29 2017-12-29 Fibre lyocell, agrégat de non-tissé comprenant celle-ci, et feuille de masque de soin comprenant celui-ci

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KR1020160182500A KR20180077801A (ko) 2016-12-29 2016-12-29 라이오셀 섬유
KR10-2016-0182500 2016-12-29

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EP4034698A4 (fr) * 2019-09-25 2023-08-23 Bast Fibre Technologies Inc. Fibre libérienne, tissus fabriqués avec celle-ci et procédé de fabrication associé

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KR102352034B1 (ko) * 2018-06-29 2022-01-14 코오롱인더스트리 주식회사 라이오셀 섬유를 포함하는 부직 섬유 집합체
KR102352035B1 (ko) * 2018-12-21 2022-01-14 코오롱인더스트리 주식회사 라이오셀 섬유를 포함하는 부직 섬유 집합체
WO2021131302A1 (fr) * 2019-12-27 2021-07-01 ユニ・チャーム株式会社 Non-tissé et article absorbant
WO2022023394A1 (fr) * 2020-07-29 2022-02-03 Lenzing Aktiengesellschaft Utilisation de fibres de lyocell

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JP2020504791A (ja) 2020-02-13
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CN110139955A (zh) 2019-08-16
US20190345641A1 (en) 2019-11-14
EP3564417A4 (fr) 2020-09-02

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