Classifications

• • 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
  • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
  • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
• • 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
  • 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
  • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
  • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
  • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
  • D06M13/144—Alcohols; Metal alcoholates
  • D06M13/148—Polyalcohols, e.g. glycerol or glucose
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
  • D06M13/165—Ethers
  • D06M13/17—Polyoxyalkyleneglycol ethers
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
  • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
  • D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
  • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/53—Polyethers
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
  • D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
  • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions

Definitions

• the present invention relates to a short fiber treatment agent, a short fiber to which the short fiber treatment agent is attached, and a method for manufacturing a spunlace nonwoven fabric using short fibers to which the short fiber treatment agent is attached.
• Natural fibers such as cotton fibers, regenerated fibers such as rayon, and synthetic fibers such as polyolefin are generally used as raw material fibers for nonwoven fabrics.
• a treatment of applying a nonwoven fabric treatment agent containing a surfactant and the like to surfaces of raw material fibers is performed in some cases to impart, to the raw material fibers, various characteristics such as lubricity and bundling properties required in manufacturing of nonwoven fabrics.
• Patent document 1 discloses a configuration of a nonwoven fabric treatment agent containing a mineral oil, a fatty acid ester, and a polyoxyalkylene polyhydric alcohol fatty acid ester.
• Patent document 2 discloses a configuration of a fiber treatment agent for hydroentanglement through highly pressurized water jets containing a polyhydric alcohol fatty acid ester sulfate salt, a mineral oil, and a polyoxyalkylene polyhydric alcohol fatty acid ester.
• the nonwoven fabric treatment agents of the related art have a problem of frequent bubble formation in water used for hydroentanglement in a step of manufacturing nonwoven fabrics, that is, a problem of foaming when the treatment agent dropped from raw material fibers is mixed into water.
• the present invention has been made in view of these circumstances, and an object thereof is to provide a short fiber treatment agent that can inhibit foaming of water used for hydroentanglement. Another object of the present invention is to provide a short fiber to which the short fiber treatment agent is attached. Still another object of the present invention is to provide a method for manufacturing a spunlace nonwoven fabric using short fibers to which the short fiber treatment agent is attached.
• a short fiber treatment agent including a specific fatty acid derivative, a specific fatty acid or oil or fat, and a specific polyhydric alcohol is definitely suitable.
• a short fiber treatment agent for solving the above-mentioned problem contains a fatty acid derivative, at least one selected from fatty acids and oils and fats, and a polyhydric alcohol excluding polyoxyethylene polyoxypropylene glycol that includes 20 oxyethylene units and 30 oxypropylene units.
• the fatty acid derivative has a structure in which an alkylene oxide is added, at a ratio of 0.1 to 30 mol, to 1 mol of a fatty acid having 12 to 24 carbon atoms.
• the fatty acids have 12 to 24 carbon atoms.
• the oils and fats are at least one selected from vegetable oils, animal oils, and hardened oils thereof.
• the polyhydric alcohol has 2 to 6 hydroxy groups in the molecule.
• the total content of the fatty acid derivative, the at least one selected from the fatty acids and the oils and fats, and the polyhydric alcohol in the short fiber treatment agent is taken as 100 parts by mass, the content of the fatty acid derivative be 5 to 99.89 parts by mass, the content of the at least one selected from the fatty acids and the oils and fats be 0.01 to 10 parts by mass, and the content of the polyhydric alcohol be 0.1 to 90 parts by mass.
• the short fiber treatment agent preferably further contains at least one lubricant selected from a hydrocarbon compound, an ester excluding the oils and fats, and a silicone.
• the total content of the fatty acid derivative, the at least one selected from the fatty acids and the oils and fats, the polyhydric alcohol, and the lubricant in the short fiber treatment agent is taken as 100 parts by mass
• the content of the fatty acid derivative be 5 to 98.89 parts by mass
• the content of the at least one selected from the fatty acids and the oils and fats be 0.01 to 10 parts by mass
• the content of the polyhydric alcohol be 0.1 to 90 parts by mass
• the content of the lubricant be 1 to 20 parts by mass.
• the short fiber treatment agent preferably further contains an anionic surfactant.
• the total content of the fatty acid derivative, the at least one selected from the fatty acids and the oils and fats, the polyhydric alcohol, and the anionic surfactant in the short fiber treatment agent is taken as 100 parts by mass, the content of the fatty acid derivative be 5 to 98.89 parts by mass, the content of the at least one selected from the fatty acids and the oils and fats be 0.01 to 10 parts by mass, the content of the polyhydric alcohol be 0.1 to 90 parts by mass, and the content of the anionic surfactant be 1 to 20 parts by mass.
• the short fiber treatment agent may have a configuration including both an anionic surfactant and at least one lubricant selected from a hydrocarbon compound, an ester excluding the oils and fats, and a silicone.
• the total content of the fatty acid derivative, the at least one selected from the fatty acids and the oils and fats, the polyhydric alcohol, the anionic surfactant, and the lubricant in the short fiber treatment agent is taken as 100 parts by mass
• the content of the fatty acid derivative be 5 to 97.89 parts by mass
• the content of the at least one selected from the fatty acids and the oils and fats be 0.01 to 10 parts by mass
• the content of the polyhydric alcohol be 0.1 to 90 parts by mass
• the content of the anionic surfactant be 1 to 20 parts by mass
• the content of the lubricant be 1 to 20 parts by mass.
• a short fiber to be treated with the short fiber treatment agent is preferably viscose rayon.
• a short fiber for solving the above-mentioned problem is a short fiber to which the short fiber treatment agent is attached.
• a method for manufacturing a spunlace nonwoven fabric for solving the above-mentioned problem includes a first step and a second step.
• the first step is a step of carding the short fibers to manufacture a web.
• the second step is a step of entangling the web obtained in the first step through water jets. That is, the method includes carding short fibers to which the short fiber treatment agent is attached to manufacture a web, and entangling the obtained web through water jets.
• the present invention succeeds in inhibiting foaming of water used for hydroentanglement when short fibers to which a short fiber treatment agent is attached are hydroentangled.
• the short fiber treatment agent contains the following fatty acid derivative, at least one selected from the following fatty acids and the following oils and fats, and the following polyhydric alcohol.
• the fatty acid derivative has a structure in which an alkylene oxide is added to 1 mol of a fatty acid having 12 to 24 carbon atoms at a ratio of 0.1 to 30 mol.
• an addition form of ethylene oxide and propylene oxide is not particularly limited and may be any form of block addition, random addition, and a combination of block addition and random addition in a case where ethylene oxide and propylene oxide are contained as an alkylene oxide.
• the fatty acids have 12 to 24 carbon atoms.
• Specific examples of fatty acids having 12 to 24 carbon atoms include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, behenic acid, lignoceric acid, and coconut fatty acids.
• the components may be used alone or in a combination of two or more kinds thereof.
• oils and fats are at least one selected from vegetable oils, animal oils, and hardened oils thereof.
• oils and fats include castor oil, sesame oil, tall oil, palm oil, palm kernel oil, coconut oil, rapeseed oil, lard, beef tallow, whale oil, and hardened oils thereof.
• the components may be used alone or in a combination of two or more kinds thereof.
• the polyhydric alcohol has 2 to 6 hydroxy groups in the molecule.
• the polyhydric alcohol used in the present embodiment is selected from polyhydric alcohols excluding polyoxyethylene (in which the number of oxyethylene units is 20) polyoxypropylene (in which the number of oxypropylene units is 30) glycol.
• Specific examples of the polyhydric alcohol include ethylene glycol, propylene glycol, pentanediol, hexanediol, glycerin, pentaerythritol, sorbitol, sorbitan, polyethylene glycol, polypropylene glycol, and a reaction product of propylene glycol and an alkylene oxide.
• the components may be used alone or in a combination of two or more kinds thereof.
• the ratio among the contents of the fatty acid derivative, the fatty acids, the oils and fats, and the polyhydric alcohol in the short fiber treatment agent of the present embodiment is not limited. It is preferable that when the total content of the fatty acid derivative, the at least one selected from the fatty acids and the oils and fats, and the polyhydric alcohol in the short fiber treatment agent is taken as 100 parts by mass, the content of the fatty acid derivative be 5 to 99.89 parts by mass, the content of the at least one selected from the fatty acids and the oils and fats be 0.01 to 10 parts by mass, and the content of the polyhydric alcohol be 0.1 to 90 parts by mass.
• the effects of the present invention can be further improved with this configuration.
• the short fiber treatment agent of the present embodiment preferably further contains at least one lubricant selected from a hydrocarbon compound, an ester excluding the oils and fats, and a silicone.
• the effects of the present invention can be further improved by blending the lubricant.
• the lubricant components may be used alone or in a combination of two or more kinds thereof.
• hydrocarbon compounds include mineral oils and paraffin wax.
• esters include butyl stearate, stearyl stearate, glycerin monooleate, glycerin trioleate, sorbitan monolaurate, sorbitan trilaurate, sorbitan monooleate, sorbitan trioleate, sorbitan monostearate, and sorbitan tristearate.
• silicones include dimethyl silicone, amino-modified silicones, and polyoxyalkylene-modified silicones.
• the ratio among the contents of the fatty acid derivative, the fatty acids, the oils and fats, the polyhydric alcohol, and the lubricant in the short fiber treatment agent of the present embodiment is not limited. It is preferable that when the total content of the fatty acid derivative, the at least one selected from the fatty acids and the oils and fats, the polyhydric alcohol, and the lubricant in the short fiber treatment agent is taken as 100 parts by mass, the content of the fatty acid derivative be 5 to 98.89 parts by mass, the content of the at least one selected from the fatty acids and the oils and fats be 0.01 to 10 parts by mass, the content of the polyhydric alcohol be 0.1 to 90 parts by mass, and the content of the lubricant be 1 to 20 parts by mass, .
• the effects of the present invention can be further improved with this configuration.
• the short fiber treatment agent of the present embodiment preferably further contains an anionic surfactant.
• the effects of the present invention can be further improved by blending the anionic surfactant.
• the ratio among the contents of the fatty acid derivative, the fatty acids, the oils and fats, the polyhydric alcohol, and the anionic surfactant in the short fiber treatment agent of the present embodiment is not limited. It is preferable that when the total content of the fatty acid derivative, the at least one selected from the fatty acids and the oils and fats, the polyhydric alcohol, and the anionic surfactant in the short fiber treatment agent is taken as 100 parts by mass, the content of the fatty acid derivative be 5 to 98.89 parts by mass, the content of the at least one selected from the fatty acids and the oils and fats be 0.01 to 10 parts by mass, the content of the polyhydric alcohol be 0.1 to 90 parts by mass, and the content of the anionic surfactant be 1 to 20 parts by mass.
• the effects of the present invention can be further improved with this configuration.
• the ratio among the contents of the fatty acid derivative, the fatty acids, the oils and fats, the polyhydric alcohol, the anionic surfactant, and the lubricant in the short fiber treatment agent of the present embodiment is not limited. It is preferable that when the total content of the fatty acid derivative, the at least one selected from the fatty acids and the oils and fats, the polyhydric alcohol, the anionic surfactant, and the lubricant in the short fiber treatment agent is taken as 100 parts by mass, the content of the fatty acid derivative be 5 to 97.89 parts by mass, the content of the at least one selected from the fatty acids and the oils and fats be 0.01 to 10 parts by mass, the content of the polyhydric alcohol be 0.1 to 90 parts by mass, the content of the anionic surfactant be 1 to 20 parts by mass, and the content of the lubricant be 1 to 20 parts by mass.
• the effects of the present invention can be further improved with this configuration.
• the short fiber treatment agent of the present embodiment preferably further contains a nonionic surfactant other than the above-mentioned components as another component.
• Short fibers to which the short fiber treatment agent of the present embodiment is attached are generally called staple fibers, and include no long fiber generally called filament fiber.
• the length of the short fibers in the present embodiment is not particularly limited as long as the short fibers correspond to short fibers in the art of the present invention, but the length is, for example, preferably 100 mm or shorter and more preferably 51 mm or shorter.
• fibers include natural fibers, such as cotton fibers and cotton fibers treated by exposure; regenerated fibers, such as viscose rayon fibers, high-tenacity rayon fibers, super high-tenacity rayon fibers, high-wet-modulus rayon fibers, solvent-spun rayon fibers, polynosic fibers, cupra fibers, and acetate fibers; and synthetic fibers, such as polyolefin fibers, polyester fibers, polyamide fibers, acrylic fibers, polyvinyl chloride fibers, and composite fibers composed of two or more kinds of thermoplastic resins.
• natural fibers such as cotton fibers and cotton fibers treated by exposure
• regenerated fibers such as viscose rayon fibers, high-tenacity rayon fibers, super high-tenacity rayon fibers, high-wet-modulus rayon fibers, solvent-spun rayon fibers, polynosic fibers, cupra fibers, and acetate fibers
• synthetic fibers such as polyolefin fibers, polyester fibers, poly
• viscose rayon fibers high-tenacity rayon fibers, super high-tenacity rayon fibers, high-wet-modulus rayon fibers, and solvent-spun rayon fibers are preferable, and viscose rayon fibers are particularly preferable.
• the short fiber treatment agent of the present embodiment contains a specific fatty acid derivative, at least one selected from specific fatty acids and specific oils and fats, and a specific polyhydric alcohol. Accordingly, when short fibers to which the short fiber treatment agent is attached are hydroentangled, it is possible to curb bubble formation due to mixing of the short fiber treatment agent that has dropped from the short fibers into water, that is, inhibit foaming of water used for hydroentanglement. Thereby, operation efficiency can be improved in a step of manufacturing a nonwoven fabric.
• the short fiber of the present embodiment is a short fiber to which the short fiber treatment agent of the first embodiment is attached.
• a known method such as an immersion method, a spray method, or a roller method may be applied.
• the step in which the short fiber treatment agent is applied is not particularly limited, and examples thereof include a step after a refining step, and a spinning step.
• the above-mentioned short fibers can be adopted as short fibers to be treated with the short fiber treatment agent of the present embodiment.
• the form of the short fiber treatment agent of the first embodiment when applied to the short fibers may be, for example, an organic solvent solution or an aqueous liquid.
• the short fiber treatment agent of the first embodiment be diluted with water to obtain an aqueous liquid having a concentration of 0.5% to 20% by mass, and that the aqueous liquid be applied to short fibers such that the ratio of the short fiber treatment agent of the first embodiment which does not contain a solvent is 0.1% to 1% by mass relative to the short fibers.
• a third embodiment will now be described that embodies a method for manufacturing a spunlace nonwoven fabric according to the present invention.
• a spunlace nonwoven fabric is manufactured by sequentially performing a web formation step (first step) and a hydroentanglement step (second step).
• the web formation step is a step of carding short fibers to which the above-mentioned short fiber treatment agent is attached, and thereby manufacturing a web.
• the carding can be performed using a known carding machine. Examples thereof include a flat card, a combination card, and a roller card.
• the hydroentanglement step is a step of entangling the web obtained in the web formation step through water jets. Fibers can be formed into a sheet shape when the web is subjected to highly pressurized water jets and thereby the fibers are entangled with each other due to the pressure of the water jets. A drying step or a winding step may be appropriately performed after performing the hydroentanglement step.
• the hydroentanglement can be suitably performed in the case of circulating water used in the hydroentanglement. Accordingly, texture of a spunlace nonwoven fabric can be favorable.
• the first to third embodiments may be modified as follows.
• the first to third embodiments and the following modifications can be implemented in combination with each other within a technically consistent range.
• a component generally used in treatment agents such as an antioxidant or an ultraviolet absorbent may be further added to the treatment agent of the embodiments described above for maintaining quality of the treatment agent as long as the effects of the present invention are not impaired.
• the following materials were used as raw materials for the short fiber treatment agent.
• a numerical value of each component indicates the content thereof in the short fiber treatment agent.
• a short fiber treatment agent was prepared in the same procedure as in Example 1 except that materials and mixing ratios shown in Table 1 were adopted.
• an aqueous liquid containing 10% of a short fiber treatment agent was obtained by the same procedure as in Example 1.
• Table 1 the type of each component used in the respective examples and the content (%) of each component in the treatment agent are shown in the column of "Fatty acid derivative,” the column of "Fatty acids, or oils and fats,” the column of "Polyhydric alcohol,” the column of "Lubricant,” the column of "Anionic surfactant,” and the column of "Other.”
• the aqueous liquid of the short fiber treatment agent of each of the examples shown in Table 1 was further diluted, and thereby a 0.2% emulsion of the short fiber treatment agent was prepared.
• the emulsion was applied to viscose rayon fibers having a fineness of 1.3 x 10 -4 g/m (1.2 deniers) and a fiber length of 38 mm by a spray lubrication method such that an amount attached (excluding a solvent) to the fibers was 0.2% by mass. Thereafter, humidity was controlled overnight in an atmosphere of 25°C x 40% RH using a hot air dryer at 80°C, and thereby viscose rayon fibers to which the short fiber treatment agent was attached were obtained.
• a foaming property test and a cotton odor test were conducted using the viscose rayon fibers to which the short fiber treatment agents of Examples 1 to 15 and Comparative Examples 1 to 6 were attached. The procedure of each test is shown below. Table 1 shows test results in the column of "Foaming property test” and the column of "Cotton odor test.”
• the present invention succeeds in inhibiting foaming of water used for hydroentanglement.
• the effect in which it is possible to reduce cotton odor of a fiber to which the short fiber treatment agent is attached.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Mechanical Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Nonwoven Fabrics (AREA)

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• 2019
  • 2019-01-04 JP JP2019000238A patent/JP6533020B1/ja active Active
  • 2019-12-24 EP EP19907909.6A patent/EP3907326A4/fr active Pending
  • 2019-12-24 WO PCT/JP2019/050497 patent/WO2020141592A1/fr unknown
  • 2019-12-24 CN CN201980013978.2A patent/CN111757954B/zh active Active
  • 2019-12-25 TW TW108147485A patent/TWI727563B/zh active

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