WO2011158644A1 - Fibre conjuguée âme-fibre, et non-tissé - Google Patents

Fibre conjuguée âme-fibre, et non-tissé Download PDF

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Publication number
WO2011158644A1
WO2011158644A1 PCT/JP2011/062487 JP2011062487W WO2011158644A1 WO 2011158644 A1 WO2011158644 A1 WO 2011158644A1 JP 2011062487 W JP2011062487 W JP 2011062487W WO 2011158644 A1 WO2011158644 A1 WO 2011158644A1
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WO
WIPO (PCT)
Prior art keywords
cyclic olefin
core
sheath
glass transition
nonwoven fabric
Prior art date
Application number
PCT/JP2011/062487
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English (en)
Japanese (ja)
Inventor
秀俊 大川
Original Assignee
ポリプラスチックス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ポリプラスチックス株式会社 filed Critical ポリプラスチックス株式会社
Priority to KR1020127031180A priority Critical patent/KR20130086290A/ko
Priority to JP2012520361A priority patent/JP5721711B2/ja
Priority to CN201180029023XA priority patent/CN102939412A/zh
Publication of WO2011158644A1 publication Critical patent/WO2011158644A1/fr

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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
    • D01F8/06—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
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5412—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
    • 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
    • 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
    • D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent

Definitions

  • the present invention relates to a core-sheath type composite fiber and a nonwoven fabric.
  • Non-woven fabrics are used for sanitary materials such as masks and adhesives, automotive interior materials such as ceiling materials and sheets, agricultural materials, building materials, civil engineering materials, battery separators, drinking water filters, industrial filters, etc. Used in a wide range of fields.
  • the nonwoven fabric is manufactured by first forming a mass of long fibers or short fibers called a web, and then bonding the fibers.
  • a method for bonding fibers a method is known in which a part of the fibers is melted by heat to bond the fibers.
  • a method for producing a nonwoven fabric using such heat for example, a thermal bond method, a melt blow method, a spun bond method and the like are known.
  • core-sheath type composite fibers may be used.
  • the core-sheath type composite fiber is characterized in that the component contained in the sheath is easier to melt than the component contained in the core.
  • a core-sheath fiber using polyethylene and polypropylene, a core-sheath fiber using polypropylene and modified polyethylene, and a core-sheath fiber using polypropylene and modified polypropylene are known.
  • non-woven fabrics manufactured using core-sheath fibers using polypropylene as the core component and polyethylene as the sheath component are said to have features such as light weight, high strength, high flexibility, and good tactile sensation. Yes.
  • mold fiber which uses polypropylene for the core component and uses polyethylene for the sheath component is used for various uses (for example, refer patent documents 1 and 2).
  • the physical properties required for nonwoven fabrics vary depending on the application. It is a core-sheath type composite fiber using polypropylene and polyethylene that has excellent physical properties as described above, but the general-purpose olefin resin contains a lot of metal components derived from the catalyst, and depending on the application, this can cause problems Need to be improved. Further, in a high temperature environment, a small amount of gas is generated from a resin that is a raw material for the nonwoven fabric.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a nonwoven fabric containing less gas and containing metal, and a core-sheath type composite fiber constituting the nonwoven fabric. .
  • the inventors of the present invention have made extensive studies to solve the above problems. As a result, it has been found that the above-mentioned problems can be solved when the sheath portion of the core-sheath type composite fiber contains a cyclic olefin-based resin as a main component, and the present invention has been completed. More specifically, the present invention provides the following.
  • thermoplastic resin composition mainly composed of the cyclic olefin resin (A), the thermoplastic resin composition comprising
  • the main component is an amorphous thermoplastic resin having a glass transition point (Tg) higher than the glass transition point (Tg A ) of the cyclic olefin resin, or a melting point (Tm) higher than the glass transition point (Tg A ).
  • Tg glass transition point
  • Tm melting point
  • a core-sheath type composite fiber comprising a crystalline thermoplastic resin as a main component.
  • thermoplastic resin has a cyclic olefin resin (B) as a main component.
  • the sheath portion of the core-sheath type composite fiber is mainly composed of a cyclic olefin resin. For this reason, most of the surface of a nonwoven fabric is covered with cyclic olefin resin. As a result, even when used in a high temperature environment, almost no gas is generated from the nonwoven fabric. Moreover, since cyclic olefin resin has less metal content than general-purpose olefin resin, a metal hardly elutes from a nonwoven fabric during use of a nonwoven fabric.
  • the nonwoven fabric is made by using a core-sheath composite fiber made of a cyclic olefin-based resin for both the core and the sheath, the above effects are further enhanced.
  • the present invention is a core-sheath type composite fiber and a non-woven fabric produced using the core-sheath type composite fiber.
  • a core-sheath-type composite fiber and a nonwoven fabric produced using the core-sheath type composite fiber.
  • the core-sheath-type conjugate fiber of the present invention includes a core part made of a thermoplastic resin composition and a sheath part made of a cyclic olefin resin composition containing the cyclic olefin resin (A) as a main component.
  • the thermoplastic resin composition used as the raw material for the core portion is mainly composed of a crystalline thermoplastic resin or an amorphous thermoplastic resin.
  • the crystalline thermoplastic resin is not particularly limited as long as it has a melting point higher than the glass transition point of the cyclic olefin resin (A) contained in the sheath.
  • the amorphous thermoplastic resin is not particularly limited as long as the resin has a glass transition point higher than that of the cyclic olefin-based resin (A) contained in the sheath.
  • the melting point and glass transition point values measured by a DSC method (method described in JIS K7121) under a temperature rising rate of 10 ° C./min are employed.
  • the cyclic olefin-based resin composition that is a raw material for the sheath part contains the cyclic olefin-based resin (A) as a main component.
  • the heat resistance of the sheath is lower than the heat resistance of the core. For this reason, if heat is given, a sheath part will melt and fibers will combine and a nonwoven fabric will be manufactured.
  • the nonwoven fabric produced using the core-sheath-type conjugate fiber of the present invention has almost no metal elution during use, little protein adsorption, and little gas generation during use.
  • the core-sheath type composite fiber of the present invention will be described by taking a core-sheath type composite fiber made of a cyclic olefin resin for both the core part and the sheath part as an example.
  • a cyclic olefin-based resin composition containing a cyclic olefin resin (A) as a main component is used for the sheath portion, and a cyclic olefin resin (B) is used as the main component for the core portion.
  • a core-sheath type composite fiber using a thermoplastic resin composition is preferred.
  • the main component is a cyclic olefin resin for both the sheath and the core
  • the physical properties imparted by the use of the cyclic olefin resin such as the effect of reducing the elution of metal during use are more likely to appear in the nonwoven fabric.
  • the adhesiveness with a sheath part and a core part is also favorable.
  • the cyclic olefin-based resin will be described.
  • Cyclic olefin resin The difference between the cyclic olefin resin (A) and the cyclic olefin resin (B) is that the glass transition point of the cyclic olefin resin (B) is higher than the glass transition point of the cyclic olefin resin (A). First, the common part of cyclic olefin resin (A) and cyclic olefin resin (B) is demonstrated.
  • the cyclic olefin resins (A) and (B) are not particularly limited as long as they contain a cyclic olefin component as a copolymerization component and are polyolefin resins containing a cyclic olefin component in the main chain. Examples thereof include addition polymers of cyclic olefins or hydrogenated products thereof, addition copolymers of cyclic olefins and ⁇ -olefins or hydrogenated products thereof.
  • the cyclic olefin-based resins (A) and (B) include those obtained by grafting and / or copolymerizing an unsaturated compound having a polar group to the above polymer.
  • Examples of the polar group include a carboxyl group, an acid anhydride group, an epoxy group, an amide group, an ester group, and a hydroxyl group.
  • Examples of the unsaturated compound having a polar group include (meth) acrylic acid and maleic acid. Acid, maleic anhydride, itaconic anhydride, glycidyl (meth) acrylate, alkyl (meth) acrylate (carbon number 1-10) ester, alkyl maleate (carbon number 1-10) ester, (meth) acrylamide, (meta And 2-hydroxyethyl acrylate.
  • the cyclic olefin resins (A) and (B) are preferably an addition copolymer of a cyclic olefin and an ⁇ -olefin or a hydrogenated product thereof.
  • cyclic olefin resin containing the cyclic olefin component used in the present invention as a copolymerization component a commercially available resin can also be used.
  • commercially available cyclic olefin-based resins include TOPAS (registered trademark) (Topas Advanced Polymers), Apel (registered trademark) (Mitsui Chemicals), Zeonex (registered trademark) (manufactured by Nippon Zeon), Examples include ZEONOR (registered trademark) (manufactured by ZEON Corporation), ARTON (registered trademark) (manufactured by JSR Corporation), and the like.
  • Particularly preferable examples of the addition copolymer of cyclic olefin and ⁇ -olefin include: [1] an ⁇ -olefin component having 2 to 20 carbon atoms; and [2] a cyclic olefin component represented by the following general formula (I): Can be mentioned.
  • R 1 to R 12 may be the same or different and are each selected from the group consisting of a hydrogen atom, a halogen atom, and a hydrocarbon group; R 9 and R 10 , R 11 and R 12 may be integrated to form a divalent hydrocarbon group, R 9 or R 10 and R 11 or R 12 may form a ring with each other.
  • N represents 0 or a positive integer; When n is 2 or more, R 5 to R 8 may be the same or different in each repeating unit.
  • ⁇ -olefin component having 2 to 20 carbon atoms The ⁇ -olefin having 2 to 20 carbon atoms is not particularly limited. For example, the same ones as in JP2007-302722 can be mentioned. These ⁇ -olefin components may be used alone or in combination of two or more. Of these, ethylene is most preferably used alone.
  • R 1 to R 12 in the general formula (I) may be the same or different and are selected from the group consisting of a hydrogen atom, a halogen atom, and a hydrocarbon group.
  • R 1 to R 8 include, for example, a hydrogen atom; a halogen atom such as fluorine, chlorine and bromine; a lower alkyl group such as a methyl group, an ethyl group, a propyl group and a butyl group. May be different from each other, may be partially different, or all may be the same.
  • R 9 to R 12 include, for example, hydrogen atom; halogen atom such as fluorine, chlorine, bromine; methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, hexyl group, stearyl.
  • a cycloalkyl group such as a cyclohexyl group; a substituted or unsubstituted aromatic hydrocarbon group such as a phenyl group, a tolyl group, an ethylphenyl group, an isopropylphenyl group, a naphthyl group, and an amaryl group; a benzyl group , Phenethyl group, and other aralkyl groups in which an alkyl group is substituted with an aryl group. These may be different, may be partially different, or all may be the same. .
  • R 9 and R 10 or R 11 and R 12 are integrated to form a divalent hydrocarbon group
  • alkylidene groups such as an ethylidene group, a propylidene group, and an isopropylidene group. Can be mentioned.
  • the formed ring may be monocyclic or polycyclic, or may be a polycyclic ring having a bridge.
  • a ring having a double bond, or a ring composed of a combination of these rings may be used.
  • these rings may have a substituent such as a methyl group.
  • cyclic olefin component represented by the general formula (I) include those similar to those described in JP-A-2007-302722.
  • cyclic olefin components may be used singly or in combination of two or more.
  • a method for polymerizing an ⁇ -olefin component having 2 to 20 carbon atoms and a [2] cyclic olefin component represented by formula (I) and a method for hydrogenating the obtained polymer are particularly limited. Instead, it can be carried out according to known methods. Random copolymerization or block copolymerization may be used, but random copolymerization is preferred.
  • the polymerization catalyst used is not particularly limited, and the cyclic olefin resin (A), (B ) Can be obtained.
  • Use of a metallocene catalyst is preferable because a cyclic olefin resin having a low glass transition point and a cyclic olefin resin having a high glass transition point can be easily produced.
  • the cyclic olefin resins (A) and (B) include, in addition to [1] the ⁇ -olefin component having 2 to 20 carbon atoms and [2] the cyclic olefin component represented by the general formula (I), Other copolymerizable unsaturated monomer components may be contained as necessary within a range not impairing the purpose.
  • the unsaturated monomer that may be optionally copolymerized is not particularly limited, and examples thereof include hydrocarbon monomers containing two or more carbon-carbon double bonds in one molecule. Can be mentioned. Specific examples of the hydrocarbon monomer having two or more carbon-carbon double bonds in one molecule include those similar to those described in JP-A-2007-302722.
  • the cyclic olefin resin (A) and the cyclic olefin resin (B) have different glass transition points.
  • the glass transition point of the cyclic olefin resin can be adjusted by adjusting the content of the cyclic olefin component in the cyclic olefin resin.
  • Glass transition temperature of the cyclic olefin-based resin (B) and (Tg B) is preferably 20 ° C. or higher 60 ° C. or less.
  • the difference between the glass transition point (Tg A ) and the glass transition point (Tg B ) is less than 20 ° C., the condition range in which fibers can be bonded tends to be narrowed, and industrial production becomes difficult. Therefore, it is not preferable.
  • the difference between the glass transition point (Tg A ) and the glass transition point (Tg B ) exceeds 60 ° C., the cyclic olefin resin (A) is softened at a low ambient temperature even after the step of bonding the fibers. Therefore, it is not preferable because the heat resistance of the nonwoven fabric tends to be low.
  • a more preferable difference in glass transition point (Tg B -Tg A ) is 30 ° C. or more and 50 ° C. or less.
  • cyclic olefin resin (B) use of a cyclic olefin resin having a glass transition point of 60 ° C. or higher and 180 ° C. or lower is preferable from the viewpoint of improving the heat resistance of the nonwoven fabric. In general, it is difficult to produce a cyclic olefin resin having a glass transition point of 160 ° C. or higher. However, as described above, when a metallocene catalyst is used, a cyclic olefin resin having a high glass transition point can also be produced.
  • the cyclic olefin resin having a glass transition point exceeding about 160 ° C. when molded into a sheet shape, it tends to be hard and brittle.
  • the polymer in the case of molding into a fiber shape as in the present invention, the polymer is oriented at the time of molding, and physical properties such as elongation at break are improved, so that a brittle property hardly appears in the nonwoven fabric.
  • the glass transition point of the cyclic olefin resin contained in a sheath part is lower than the glass transition point of the cyclic olefin resin contained in a core part.
  • the outer cyclic olefin-based resin covers most of the surface of the nonwoven fabric. For this reason, even if the cyclic olefin-based resin in the core portion has a slightly brittle property, the nonwoven fabric is less likely to exhibit a brittle property as compared with a nonwoven fabric composed only of a cyclic olefin-based resin having a glass transition point exceeding 160 ° C.
  • Both the core and sheath are conventionally known as other resins, nucleating agents, colorants, antioxidants, stabilizers, plasticizers, lubricants, mold release agents, flame retardants, etc., as long as the object of the present invention is not impaired.
  • the additive may be contained.
  • the manufacturing method of the core-sheath type composite fiber of this invention is not specifically limited, A conventionally well-known method can be utilized.
  • a core-sheath type composite fiber a method of extruding into a fiber shape in a molten state can be mentioned.
  • the core-sheath type composite fiber of the present invention has a glass transition point (Tg A ) in which the sheath part is mainly composed of the cyclic olefin resin (A) and the core part is higher than the glass transition point (Tg A ) of the cyclic olefin resin.
  • the main component is an amorphous thermoplastic resin having Tg) or a crystalline thermoplastic resin having a melting point (Tm) higher than the glass transition point (Tg A ).
  • the volume ratio of the core part to the sheath part (the volume of the core part / the volume of the sheath part) is not particularly limited, and can be appropriately adjusted to a preferable volume ratio depending on the application. In general, the preferred volume ratio is 8/2 or more and 2/8 or less.
  • the ratio of the sheath is larger than the above range, the physical properties of the nonwoven fabric tend to be lowered because the ratio of the core portion that exhibits physical properties is small.
  • the ratio of a sheath is less than said range, the junction part of fibers will become weak and it exists in the tendency for the physical property of a nonwoven fabric to fall.
  • the nonwoven fabric of the present invention is formed by thermally bonding the above-described core-sheath type composite fiber of the present invention. First, the manufacturing method of the nonwoven fabric of this invention is demonstrated, and then the nonwoven fabric of this invention is demonstrated.
  • the fiber web constituting the nonwoven fabric is formed, and then the fibers are bonded together.
  • the fiber web is a dry method in which relatively short fibers of 15 mm or more and 100 mm or less are mechanically combed or formed into a thin sheet randomly using an air stream, and very short fibers of about 6 mm or less are water. It can be manufactured by a wet method or the like that is formed by mixing and mixing like paper. Moreover, it is not limited to the web which consists of the above short fibers, The web of the fiber which consists of a long fiber about 100 mm or more can also be used.
  • the fiber may be bonded by any method as long as the sheath is melted by heat to bond the fibers. Examples thereof include a thermal bond method, a melt blow method, and a spun bond method.
  • the nonwoven fabric of the present invention is produced using a composite fiber having a core-sheath structure. It is preferable to use a composite fiber having a core-sheath structure in the following points. If a composite fiber having a core-sheath structure is used, the sheath part can be melted by heat to bond the fibers together. For this reason, it is not necessary to separately mix the thermal bond fiber etc. which are easy to melt
  • dissolves with a heat
  • the nonwoven fabric of the present invention is formed using the core-sheath type composite fiber of the present invention.
  • the core-sheath type composite fiber of the present invention has a cyclic olefin resin in the sheath part.
  • the cyclic olefin resin has a very low metal content. Therefore, even if the nonwoven fabric of the present invention is used in a strong acid or strong alkali environment, the above-mentioned problem of metal elution hardly occurs.
  • the metal content can be 100 ppm or less, and further 50 ppm or less.
  • the nonwoven fabric of this invention can be preferably used as a filtration filter used for manufacture of such a semiconductor.
  • the cyclic olefin-based resin generates less gas even when exposed to a harsh environment (low generation gas). Therefore, even if it is used as a filter through which gas passes, the gas generated from the filter hardly poses a problem.
  • Semiconductor manufacturing, chemical manufacturing, and food manufacturing are usually performed in a clean room. When a gas is sent into a clean room, it is necessary to pass the gas through a filter in order to remove impurities contained in the gas.
  • the nonwoven fabric of the present invention is preferable as such a clean room filter. This is because according to the nonwoven fabric of the present invention, since impurities generated from the filter are very small, impurities entering the clean room can be suppressed as compared with conventional products.
  • the nonwoven fabric of the present invention can be preferably applied to uses where protein adsorption is a problem. Filters used in fields such as biochemical analysis, separation and purification of biological substances (proteins), and medical care are required to be difficult to adsorb proteins. This is because if protein is easily adsorbed, it may cause a decrease in detection sensitivity and a decrease in reproducibility in medical and biochemical analyses. In the separation and purification of biological substances such as proteins, the biological substances may be adsorbed on filters used for purification, which may cause a decrease in yield or purity of the target biological substances. Because.
  • the nonwoven fabric of the present invention can be preferably used as a material for filters and the like used in the fields of separation and purification of such biological substances (proteins), medicine, and the like.
  • the cyclic olefin resin-based resin has high charge retention performance. That is, the non-woven fabric of the present invention hardly causes charge decay even when left standing. Therefore, the nonwoven fabric of this invention can be preferably used as a nonwoven fabric used in the state which hold
  • an electret filter can be mentioned.
  • An electret filter is an air filter that can effectively remove fine particles in the air by electrostatic force of electric charges semi-permanently fixed to fibers used for a filter medium.
  • the electret filter is, for example, an air filter for purifying air in a vehicle interior of an automobile or a railroad vehicle, an exhaust filter for a vacuum cleaner and a main filter, an air cleaner filter, an air conditioner filter, an intake / It is used as an exhaust filter, a building air conditioning filter, a clean room filter, and the like.
  • the nonwoven fabric of this invention is preferable as an electret filter used for these uses.
  • the core portion also contains the cyclic olefin resin as a main component.
  • Cyclic olefin-based resin 1 manufactured by Topas Advanced Polymers, trade name “TOPAS 9903D-10”, glass transition point 33 ° C.
  • Cyclic olefin-based resin 2 manufactured by Topas Advanced Polymers, trade name “TOPAS 9506F-04”, glass transition point 64 ° C.
  • Cyclic olefin-based resin 3 manufactured by Topas Advanced Polymers, trade name “TOPAS 8007F-04”, glass transition point 78 ° C.
  • Cyclic olefin-based resin 4 manufactured by Topas Advanced Polymers, trade name “TOPAS 6013F-04”, glass transition point 138 ° C.
  • Cyclic olefin resin 5 manufactured by Topas Advanced Polymers, trade name “TOPAS 6015S-04”, glass transition point 158 ° C.
  • Cyclic olefin resin 6 manufactured by Topas Advanced Polymers, trade name “TOPAS 6017S-04”, glass transition point 178 ° C. All of the above-mentioned commercially available cyclic olefin resins are resins produced using a metallocene catalyst.
  • Polypropylene manufactured by Nippon Polypro Co., Ltd., trade name “NOVATEC PP SA3A”, melting point 165 ° C.
  • Polyethylene manufactured by Nippon Polyethylene Co., Ltd., trade name “NOVATEC HD HJ580N”, melting point 134 ° C.
  • the amount of metal contained in the nonwoven fabric was measured by the following procedure. 1 g of a nonwoven fabric sample washed with ultrapure water was weighed into a platinum crucible, carbonized with an electric stove, and then incinerated with an electric furnace (600 ° C. ⁇ 1 hr). The ashed sample was recovered by dissolving in 5 ml of 3.5% aqueous hydrochloric acid solution, and the solution was made up to 25 ml with ultrapure water. Using this solution as an analysis sample, quantitative analysis of metal was performed by ICP analysis.
  • the amount of gas generated from the nonwoven fabric was measured according to the following procedure.
  • the gas generated from 1 g of the nonwoven fabric sample was trapped by a Tenax tube by heating at 80 ° C./1 hour in a horizontal tubular furnace.
  • a Tenax tube was attached to an autosampler, and the trapped generated gas was analyzed with a thermal desorption apparatus / gas chromatograph mass spectrometer.
  • a certain amount (10 ⁇ g) of standard toluene was collected and supported on a Tenax tube, the same analysis was performed, and the total amount generated was calculated in terms of toluene. The calculation results are shown in Table 2.
  • the non-woven fabric of the present invention was confirmed to have a low metal content and gas generation amount.
  • the comparative example of the nonwoven fabric made of polyethylene and polypropylene components had a large amount of both metal and gas.

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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)
  • Multicomponent Fibers (AREA)

Abstract

La présente invention concerne un non-tissé convenant à des applications demandant de faibles niveaux de dégagement gazeux et d'élution métallique. L'invention concerne également une fibre conjuguée âme-gaine se composant de ladite fibre pour non-tissé. Cette fibre conjuguée âme-gaine comporte une âme comprenant une composition de résine thermoplastique, et une gaine comprenant une composition d'oléfine cyclique se composant essentiellement d'une résine d'oléfine cyclique (A). La composition de résine thermoplastique se compose essentiellement d'une résine thermoplastique amorphe dont la température de transition vitreuse (Tg) est supérieure à la température de transition vitreuse (TgA) de la résine d'oléfine cyclique (A), ou se compose essentiellement d'une résine thermoplastique cristalline dont le point de fusion (Tm) est supérieur à la température de transition vitreuse (TgA). La résine d'oléfine cyclique s'utilise dans un noyau se composant essentiellement d'une résine thermoplastique.
PCT/JP2011/062487 2010-06-15 2011-05-31 Fibre conjuguée âme-fibre, et non-tissé WO2011158644A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020127031180A KR20130086290A (ko) 2010-06-15 2011-05-31 심초형 복합섬유 및 부직포
JP2012520361A JP5721711B2 (ja) 2010-06-15 2011-05-31 芯鞘型複合繊維及び不織布
CN201180029023XA CN102939412A (zh) 2010-06-15 2011-05-31 芯鞘型复合纤维及无纺布

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Application Number Priority Date Filing Date Title
JP2010-135696 2010-06-15
JP2010135696 2010-06-15

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WO2011158644A1 true WO2011158644A1 (fr) 2011-12-22

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JP (1) JP5721711B2 (fr)
KR (1) KR20130086290A (fr)
CN (1) CN102939412A (fr)
TW (1) TW201202499A (fr)
WO (1) WO2011158644A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
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WO2014169001A1 (fr) * 2013-04-10 2014-10-16 E. I. Du Pont De Nemours And Company Fibres résistantes aux acides de sulfure de polyarylène et de copolymère de norbornène
US20140308868A1 (en) * 2013-04-10 2014-10-16 E I Du Pont De Nemours And Company Acid Resistant Fibers of Polyarylene Sulfide and Norbornene Copolymer
WO2016194554A1 (fr) * 2015-06-03 2016-12-08 ポリプラスチックス株式会社 Substrat de timbre
WO2016194553A1 (fr) * 2015-06-03 2016-12-08 ポリプラスチックス株式会社 Non-tissé de liaison thermique contenant une résine d'oléfine cyclique
JP2016223043A (ja) * 2015-06-03 2016-12-28 ポリプラスチックス株式会社 環状オレフィン系樹脂含有サーマルボンド不織布
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WO2017155026A1 (fr) * 2016-03-11 2017-09-14 Es Fibervisions Co., Ltd. Fibres à base de polyéthylène à faible élution et textile non-tissé utilisant celles-ci
WO2018230386A1 (fr) 2017-06-13 2018-12-20 株式会社クラレ Fibres à faible lixiviabilité et structure fibreuse
JPWO2018230386A1 (ja) * 2017-06-13 2020-04-02 株式会社クラレ 低溶出性繊維及び繊維構造体
JP7042269B2 (ja) 2017-06-13 2022-03-25 株式会社クラレ 低溶出性繊維及び繊維構造体

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CN102939412A (zh) 2013-02-20

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