JP2012092466A - Wet-laid nonwoven fabric and textile product - Google Patents
Wet-laid nonwoven fabric and textile product Download PDFInfo
- Publication number
- JP2012092466A JP2012092466A JP2010242195A JP2010242195A JP2012092466A JP 2012092466 A JP2012092466 A JP 2012092466A JP 2010242195 A JP2010242195 A JP 2010242195A JP 2010242195 A JP2010242195 A JP 2010242195A JP 2012092466 A JP2012092466 A JP 2012092466A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- fiber
- wet nonwoven
- weight
- polyester
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 66
- 239000004753 textile Substances 0.000 title claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 130
- 229920000728 polyester Polymers 0.000 claims abstract description 47
- 239000002781 deodorant agent Substances 0.000 claims abstract description 24
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 14
- 239000000284 extract Substances 0.000 claims description 22
- 239000003513 alkali Substances 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 16
- 229920000642 polymer Polymers 0.000 claims description 16
- 239000013585 weight reducing agent Substances 0.000 claims description 10
- 230000035699 permeability Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 230000000840 anti-viral effect Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 2
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 16
- 230000001877 deodorizing effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 22
- -1 polypropylene Polymers 0.000 description 17
- 238000004090 dissolution Methods 0.000 description 10
- 238000009987 spinning Methods 0.000 description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 description 8
- 239000005020 polyethylene terephthalate Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000004580 weight loss Effects 0.000 description 7
- 229920001410 Microfiber Polymers 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 229940094952 green tea extract Drugs 0.000 description 5
- 235000020688 green tea extract Nutrition 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 239000000123 paper Substances 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- 238000011946 reduction process Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 238000002074 melt spinning Methods 0.000 description 3
- 229920000747 poly(lactic acid) Polymers 0.000 description 3
- 239000004626 polylactic acid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004953 Aliphatic polyamide Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 229920003231 aliphatic polyamide Polymers 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 235000003261 Artemisia vulgaris Nutrition 0.000 description 1
- 240000006891 Artemisia vulgaris Species 0.000 description 1
- 241000972773 Aulopiformes Species 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000195649 Chlorella <Chlorellales> Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 244000061508 Eriobotrya japonica Species 0.000 description 1
- 235000009008 Eriobotrya japonica Nutrition 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical class OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000208690 Hamamelis Species 0.000 description 1
- 241000234435 Lilium Species 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 240000004371 Panax ginseng Species 0.000 description 1
- 235000002789 Panax ginseng Nutrition 0.000 description 1
- 241000199919 Phaeophyceae Species 0.000 description 1
- 244000014047 Polianthes tuberosa Species 0.000 description 1
- 235000016067 Polianthes tuberosa Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 244000288377 Saxifraga stolonifera Species 0.000 description 1
- 235000002953 Saxifraga stolonifera Nutrition 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 241001222097 Xenocypris argentea Species 0.000 description 1
- 229940105017 achillea millefolium extract Drugs 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 229940119217 chamomile extract Drugs 0.000 description 1
- 235000020221 chamomile extract Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229940007062 eucalyptus extract Drugs 0.000 description 1
- 239000010642 eucalyptus oil Substances 0.000 description 1
- 229940044949 eucalyptus oil Drugs 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
本発明は、優れた抗菌性または消臭性を有する湿式不織布、および該湿式不織布を用いてなる繊維製品に関する。 The present invention relates to a wet nonwoven fabric having excellent antibacterial or deodorant properties, and a fiber product using the wet nonwoven fabric.
従来、抗菌性または消臭性を有する湿式不織布として、ポリプロピレン繊維を用いたもの、金属イオンを用いたものなど種々のものが提案されている（例えば、特許文献１、２参照）。
他方、近年の健康ブームにより、さらに優れた抗菌性や消臭性を有する繊維製品が求められている。
Conventionally, various types such as those using polypropylene fibers and those using metal ions have been proposed as wet nonwoven fabrics having antibacterial or deodorizing properties (see, for example, Patent Documents 1 and 2).
On the other hand, with the recent health boom, textile products having further superior antibacterial and deodorant properties are being demanded.
本発明は上記の背景に鑑みなされたものであり、その目的は、優れた抗菌性または消臭性を有する湿式不織布、および該湿式不織布を用いてなる繊維製品を提供することにある。 This invention is made | formed in view of said background, The objective is to provide the textiles which use the wet nonwoven fabric which has the outstanding antibacterial property or deodorizing property, and this wet nonwoven fabric.
本発明者らは上記の課題を達成するため鋭意検討した結果、極めて繊度が小さい繊維を用いて湿式不織布を得た後、該湿式不織布に抗菌剤または消臭剤を付着させると、湿式不織布を構成する繊維の表面積が大きいため、極めて優れた抗菌性または消臭性を有する湿式不織布が得られることを見出し、さらに鋭意検討を重ねることにより本発明を完成するに至った。 As a result of intensive studies to achieve the above-mentioned problems, the present inventors obtained a wet nonwoven fabric using fibers with extremely small fineness, and then attached an antibacterial agent or deodorant to the wet nonwoven fabric. Since the surface area of the constituent fibers is large, it has been found that a wet nonwoven fabric having extremely excellent antibacterial or deodorant properties can be obtained, and the present invention has been completed by intensive studies.
かくして、本発明によれば「目付けが１０〜５０ｇ／ｍ２の湿式不織布であって、ポリエステルからなり単繊維径（Ｄ）が５００〜１０００ｎｍかつ該単繊維径（Ｄ）ｎｍに対する繊維長（Ｌ）ｎｍの比（Ｌ／Ｄ）が６００〜３０００の範囲内である極細ポリエステル繊維Ａを含み、かつ抗菌剤または消臭剤が付着してなることを特徴とする湿式不織布。」が提供される。 Thus, according to the present invention, “wet nonwoven fabric having a basis weight of 10 to 50 g / m 2 , which is made of polyester and has a single fiber diameter (D) of 500 to 1000 nm and a fiber length relative to the single fiber diameter (D) nm (L ) A wet nonwoven fabric characterized in that it comprises an ultrafine polyester fiber A having a nm ratio (L / D) in the range of 600 to 3000, and has an antibacterial agent or deodorant attached thereto. .
その際、前記抗菌剤または消臭剤が植物由来エキスであることが好ましい。また、前記抗菌剤または消臭剤の付着量が、湿式不織布全重量に対し１〜１０重量％の範囲内であることが好ましい。また、前記極細ポリエステル繊維Ａが、ポリエステルからなりかつ島径（Ｄ）が５００〜１０００ｎｍである島成分と前記のポリエステルよりもアルカリ水溶液易溶解性ポリマーからなる海成分とを有する複合繊維にアルカリ減量加工を施すことにより、前記海成分を溶解除去したものであることが好ましい。また、湿式不織布において、前記極細ポリエステル繊維Ａの混率が１０〜５０重量％の範囲内であることが好ましい。また、湿式不織布の通気度が５〜１００ｃｃ／ｃｍ２／ｓｅｃの範囲内であることが好ましい。 At that time, the antibacterial agent or deodorant is preferably a plant-derived extract. Moreover, it is preferable that the adhesion amount of the said antibacterial agent or deodorant exists in the range of 1-10 weight% with respect to the wet nonwoven fabric total weight. Further, the ultrafine polyester fiber A is made of polyester and has an island weight component having an island diameter (D) of 500 to 1000 nm and a composite fiber having a sea component made of a polymer that is more easily soluble in an alkali solution than the polyester, and is subjected to alkali weight loss. It is preferable that the sea component is dissolved and removed by processing. Moreover, in a wet nonwoven fabric, it is preferable that the mixing ratio of the ultrafine polyester fiber A is in the range of 10 to 50% by weight. Moreover, it is preferable that the wet non-woven fabric has a permeability of 5 to 100 cc / cm 2 / sec.
また、本発明によれば、前記の湿式不織布を用いてなり、エアフィルター、花粉用マスク、防塵用マスク、および抗ウイルス用マスクからなる群より選択されるいずれかの繊維製品が提供される。 In addition, according to the present invention, there is provided any textile product selected from the group consisting of an air filter, a pollen mask, a dust mask, and an antiviral mask, using the wet nonwoven fabric.
本発明によれば、優れた抗菌性または消臭性を有する湿式不織布、および該湿式不織布を用いてなる繊維製品が得られる。 According to the present invention, a wet nonwoven fabric having excellent antibacterial or deodorant properties and a fiber product using the wet nonwoven fabric can be obtained.
以下、本発明の実施の形態について詳細に説明する。
まず、本発明の湿式不織布において、目付けが１０〜５０ｇ／ｍ２（より好ましくは１５〜４５ｇ／ｍ２）の範囲内であることが肝要である。該目付けが１０ｇ／ｍ２よりも小さいと、花粉やウイルスなどの捕集効率が低下するため好ましくない。逆に、該目付けが５０ｇ／ｍ２よりも大きいと、通気性が低下するため好ましくない。
Hereinafter, embodiments of the present invention will be described in detail.
First, in the wet nonwoven fabric of the present invention, it is important that the basis weight is in the range of 10 to 50 g / m 2 (more preferably 15 to 45 g / m 2 ). When the basis weight is less than 10 g / m 2 , the collection efficiency of pollen, virus, etc. is lowered, which is not preferable. On the contrary, when the basis weight is larger than 50 g / m 2 , the air permeability is lowered, which is not preferable.
また、本発明の湿式不織布は、ポリエステルからなり単繊維径（Ｄ）が５００〜１０００ｎｍかつ該単繊維径（Ｄ）ｎｍに対する繊維長（Ｌ）ｎｍの比（Ｌ／Ｄ）が６００〜３０００の範囲内である極細ポリエステル繊維Ａを含む。かかる極細ポリエステル繊維Ａを含まない場合は、優れた抗菌性または消臭性が得られず好ましくない。 The wet nonwoven fabric of the present invention is made of polyester and has a single fiber diameter (D) of 500 to 1000 nm and a ratio (L / D) of fiber length (L) nm to the single fiber diameter (D) nm of 600 to 3000. Including ultra fine polyester fiber A within the range. When such extra fine polyester fiber A is not included, an excellent antibacterial or deodorant property cannot be obtained, which is not preferable.
ここで、前記極細ポリエステル繊維Ａにおいて、単繊維径が５００ｎｍ未満では、極細ポリエステル繊維Ａ同士が擬似膠着しやすく均一分散しにくいため、優れた抗菌性または消臭性が得られないおそれがある。逆に、該単繊維径が１０００ｎｍより大きいと、極細ポリエステル繊維としての効果が低くなり、優れた抗菌性または消臭性が得られないおそれがある。なお、単繊維の断面形状が丸断面以外の異型断面である場合には外接円の直径を単繊維径とする。また、単繊維径は、透過型電子顕微鏡で繊維の横断面を撮影することにより測定が可能である。 Here, in the ultra-fine polyester fiber A, if the single fiber diameter is less than 500 nm, the ultra-fine polyester fibers A tend to be pseudo-glueed and difficult to uniformly disperse, and there is a possibility that excellent antibacterial or deodorant properties may not be obtained. On the contrary, if the single fiber diameter is larger than 1000 nm, the effect as an ultrafine polyester fiber is lowered, and there is a possibility that excellent antibacterial or deodorant properties cannot be obtained. In addition, when the cross-sectional shape of the single fiber is an atypical cross section other than the round cross section, the diameter of the circumscribed circle is defined as the single fiber diameter. The single fiber diameter can be measured by photographing the cross section of the fiber with a transmission electron microscope.
また、前記極細ポリエステル繊維Ａにおいて、単繊維径（Ｄ）ｎｍに対する繊維長（Ｌ）ｎｍの比（Ｌ／Ｄ）が６００〜３０００（好ましくは８００〜１５００）の範囲内であることが肝要である。該比（Ｌ／Ｄ）が６００未満では、繊維長が短くなり過ぎるため、他の繊維との絡みが小さくなり、繊維が脱落する可能性が高くなり好ましくない。逆に、該該比（Ｌ／Ｄ）が３０００を越える場合、繊維長が長くなりすぎ、極細ポリエステル繊維Ａ自身の絡みが大きくなり、均一分散が阻害されるおそれがあり好ましくない。 In the ultra-fine polyester fiber A, it is important that the ratio (L / D) of the fiber length (L) nm to the single fiber diameter (D) nm is in the range of 600 to 3000 (preferably 800 to 1500). is there. If the ratio (L / D) is less than 600, the fiber length becomes too short, so that the entanglement with other fibers becomes small, and the possibility that the fibers fall off becomes unfavorable. On the contrary, when the ratio (L / D) exceeds 3000, the fiber length becomes too long, the entanglement of the ultrafine polyester fiber A itself is increased, and the uniform dispersion may be hindered.
前記極細ポリエステル繊維Ａを形成するポリエステルの種類としては、ポリエチレンテレフタレートやポリトリメチレンテレフタレート、ポリブチレンテレフタレート、ステレオコンプレックスポリ乳酸、ポリ乳酸、第３成分を共重合させたポリエステルなどが好ましく例示される。 Preferred examples of the polyester that forms the ultrafine polyester fiber A include polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, stereocomplex polylactic acid, polylactic acid, and polyester obtained by copolymerizing a third component.
前記のような極細ポリエステル繊維Ａの製造方法としては特に限定されないが、国際公開第２００５／０９５６８６号パンフレットに開示された方法が好ましい。すなわち、単繊維径およびその均一性の点で、ポリエステルポリマーからなりかつその島径（Ｄ）が５００〜１０００ｎｍである島成分と、前記のポリエステルポリマーよりもアルカリ水溶液易溶解性ポリマー（以下、「易溶解性ポリマー」ということもある。）からなる海成分とを有する複合繊維にアルカリ減量加工を施し、前記海成分を溶解除去したものであることが好ましい。なお、前記島径は、透過型電子顕微鏡で繊維の横断面を撮影することにより測定が可能である。なお、島の形状が丸断面以外の異型断面である場合には、前記の島径（Ｄ）は、その外接円の直径を用いる。 Although it does not specifically limit as a manufacturing method of the above ultra fine polyester fibers A, The method disclosed by the international publication 2005/095686 pamphlet is preferable. That is, in terms of single fiber diameter and uniformity thereof, an island component composed of a polyester polymer and having an island diameter (D) of 500 to 1000 nm, and an alkaline aqueous solution-soluble polymer (hereinafter, “ It is preferable that the composite fiber having a sea component composed of “easily soluble polymer”) is subjected to an alkali weight reduction process, and the sea component is dissolved and removed. The island diameter can be measured by photographing a cross section of the fiber with a transmission electron microscope. In addition, when the shape of the island is an atypical cross section other than a round cross section, the diameter of the circumscribed circle is used as the island diameter (D).
ここで、海成分を形成するアルカリ水溶液易溶解性ポリマーの、島成分を形成するポリエステルポリマーに対する溶解速度比が２００以上（好ましくは３００〜３０００）であると、島分離性が良好となり好ましい。溶解速度が２００倍未満の場合には、繊維断面中央部の海成分を溶解する間に、分離した繊維断面表層部の島成分が、繊維径が小さいために溶解されるため、海相当分が減量されているにもかかわらず、繊維断面中央部の海成分を完全に溶解除去できず、島成分の太さ斑や島成分自体の溶剤侵食につながり、均一な繊維径の超極細繊維が得ることができないおそれがある。 Here, it is preferable that the dissolution rate ratio of the aqueous alkali-soluble polymer that forms the sea component to the polyester polymer that forms the island component is 200 or more (preferably 300 to 3000) because the island separability is good. When the dissolution rate is less than 200 times, the island component of the separated fiber cross-section surface layer is dissolved because the fiber diameter is small while the sea component in the center of the fiber cross-section is dissolved. Despite being reduced in weight, the sea component at the center of the fiber cross section cannot be completely dissolved and removed, leading to thick spots on the island component and solvent erosion of the island component itself, resulting in ultra-fine fibers with a uniform fiber diameter. There is a risk that it will not be possible.
海成分を形成する易溶解性ポリマーとしては、特に繊維形成性の良いポリエステル類、脂肪族ポリアミド類、ポリエチレンやポリスチレン等のポリオレフィン類を好ましい例としてあげることができる。更に具体例を挙げれば、アルカリ水溶液易溶解性ポリマーとして、ポリ乳酸、超高分子量ポリアルキレンオキサイド縮合系ポリマー、ポリアルキレングリコール系化合物と５−ナトリウムスルホイソフタル酸の共重合ポリエステルが最適である。ここでアルカリ水溶液とは、水酸化カリウム、水酸化ナトリウム水溶液などを言う。これ以外にも、ナイロン６やナイロン６６等の脂肪族ポリアミドに対するギ酸、ポリスチレンに対するトリクロロエチレン等やポリエチレン（特に高圧法低密度ポリエチレンや直鎖状低密度ポリエチレン）に対する熱トルエンやキシレン等の炭化水素系溶剤、ポリビニルアルコールやエチレン変性ビニルアルコール系ポリマーに対する熱水を例として挙げることができる。 Preferable examples of the easily soluble polymer forming the sea component include polyesters, aliphatic polyamides, and polyolefins such as polyethylene and polystyrene, which are particularly good in fiber formation. As specific examples, polylactic acid, an ultrahigh molecular weight polyalkylene oxide condensation polymer, and a copolymerized polyester of polyalkylene glycol compound and 5-sodium sulfoisophthalic acid are optimal as the alkaline water soluble polymer. Here, the alkaline aqueous solution refers to potassium hydroxide, sodium hydroxide aqueous solution and the like. Besides these, hydrocarbon solvents such as hot toluene and xylene for formic acid for aliphatic polyamides such as nylon 6 and nylon 66, trichloroethylene for polystyrene, and polyethylene (especially high-pressure low-density polyethylene and linear low-density polyethylene). Examples thereof include hot water for polyvinyl alcohol and ethylene-modified vinyl alcohol polymers.
ポリエステル系ポリマーの中でも、５−ナトリウムスルホイソフタル酸６〜１２モル％と分子量４０００〜１２０００のポリエチレングリコールを３〜１０重量％共重合させた固有粘度が０．４〜０．６のポリエチレンテレフタレート系共重合ポリエステルが好ましい。ここで、５−ナトリウムスルホイソフタル酸は親水性と溶融粘度向上に寄与し、ポリエチレングリコール（ＰＥＧ）は親水性を向上させる。また、ＰＥＧは分子量が大きいほど、その高次構造に起因すると考えられる親水性増加作用があるが、反応性が悪くなってブレンド系になるため、耐熱性や紡糸安定性の面で問題が生じる可能性がある。また、共重合量が１０重量％以上になると、溶融粘度低下作用があるので、好ましくない。 Among polyester polymers, polyethylene terephthalate copolymer having an intrinsic viscosity of 0.4 to 0.6 obtained by copolymerizing 6 to 12 mol% of 5-sodium sulfoisophthalic acid and 3 to 10% by weight of polyethylene glycol having a molecular weight of 4000 to 12000. Polymerized polyester is preferred. Here, 5-sodium sulfoisophthalic acid contributes to improving hydrophilicity and melt viscosity, and polyethylene glycol (PEG) improves hydrophilicity. In addition, PEG has a hydrophilicity increasing action that is considered to be due to its higher-order structure as the molecular weight increases. However, since the reactivity becomes poor and a blend system is produced, problems arise in terms of heat resistance and spinning stability. there is a possibility. On the other hand, if the copolymerization amount is 10% by weight or more, there is an effect of decreasing the melt viscosity, which is not preferable.
一方、島成分を形成するポリエステルポリマーとしては、前述のとおりである。なお、海成分を形成するポリマーおよび島成分を形成するポリマーについて、製糸性および抽出後の超極細繊維の物性に影響を及ぼさない範囲で、必要に応じて、有機充填剤、酸化防止剤、熱安定剤、光安定剤、難燃剤、滑剤、帯電防止剤、防錆剤、架橋剤、発泡剤、蛍光剤、表面平滑剤、表面光沢改良剤、フッ素樹脂等の離型改良剤、等の各種添加剤を含んでいても差しつかえない。 On the other hand, the polyester polymer forming the island component is as described above. In addition, for the polymer that forms the sea component and the polymer that forms the island component, organic fillers, antioxidants, heat, and so on, as long as they do not affect the spinning properties and the properties of the ultrafine fibers after extraction. Stabilizers, light stabilizers, flame retardants, lubricants, antistatic agents, rust preventive agents, crosslinking agents, foaming agents, fluorescent agents, surface smoothing agents, surface gloss improvers, mold release improvers such as fluororesins, etc. Even if an additive is included, it is acceptable.
前記の海島型複合繊維において、溶融紡糸時における海成分の溶融粘度が島成分ポリマーの溶融粘度よりも大きいことが好ましい。かかる関係にある場合には、海成分の複合重量比率が４０％未満と少なくなっても、島同士が接合したり、島成分の大部分が接合して海島型複合繊維とは異なるものになり難い。 In the sea-island type composite fiber, it is preferable that the melt viscosity of the sea component at the time of melt spinning is larger than the melt viscosity of the island component polymer. In such a relationship, even if the composite weight ratio of the sea component is less than 40%, the islands are joined together, or the majority of the island components are joined to be different from the sea-island type composite fiber. hard.
好ましい溶融粘度比（海／島）は、１．１〜２．０、特に１．３〜１．５の範囲である。この比が１．１倍未満の場合には溶融紡糸時に島成分が接合しやすくなり、一方２．０倍を越える場合には、粘度差が大きすぎるために紡糸調子が低下しやすい。 A preferred melt viscosity ratio (sea / island) is in the range of 1.1 to 2.0, especially 1.3 to 1.5. If this ratio is less than 1.1 times, the island components are likely to be joined during melt spinning, whereas if it exceeds 2.0 times, the viscosity difference is too large and the spinning tone tends to be lowered.
次に島数は、１００以上（より好ましくは３００〜１０００）であることが好ましい。また、その海島複合重量比率（海：島）は、２０：８０〜８０：２０の範囲が好ましい。かかる範囲であれば、島間の海成分の厚みを薄くすることができ、海成分の溶解除去が容易となり、島成分の極細繊維への転換が容易になるので好ましい。ここで海成分の割合が８０％を越える場合には海成分の厚みが厚くなりすぎ、一方２０％未満の場合には海成分の量が少なくなりすぎて、島間に接合が発生しやすくなる。 Next, the number of islands is preferably 100 or more (more preferably 300 to 1000). The sea-island composite weight ratio (sea: island) is preferably in the range of 20:80 to 80:20. Within such a range, the thickness of the sea component between the islands can be reduced, the sea component can be easily dissolved and removed, and the conversion of the island component into ultrafine fibers is facilitated. Here, when the proportion of the sea component exceeds 80%, the thickness of the sea component becomes too thick. On the other hand, when the proportion is less than 20%, the amount of the sea component becomes too small, and joining between islands is likely to occur.
溶融紡糸に用いられる口金としては、島成分を形成するための中空ピン群や微細孔群を有するものなど任意のものを用いることができる。例えば、中空ピンや微細孔より押し出された島成分とその間を埋める形で流路を設計されている海成分流とを合流し、これを圧縮することにより海島断面が形成されるといった紡糸口金でもよい。吐出された海島型複合繊維は冷却風により固化され、所定の引き取り速度に設定した回転ローラーあるいはエジェクターにより引き取られ、未延伸糸を得る。この引き取り速度は特に限定されないが、２００〜５０００ｍ／分であることが望ましい。２００ｍ／分以下では生産性が悪い。また、５０００ｍ／分以上では紡糸安定性が悪い。 As the die used for melt spinning, an arbitrary one such as a hollow pin group or a fine hole group for forming an island component can be used. For example, a spinneret in which a cross section of a sea island is formed by merging and compressing an island component extruded from a hollow pin or a fine hole and a sea component flow designed to fill the gap between them. Good. The discharged sea-island type composite fiber is solidified by cooling air and taken up by a rotating roller or an ejector set at a predetermined take-up speed to obtain an undrawn yarn. The take-up speed is not particularly limited, but is preferably 200 to 5000 m / min. Productivity is poor at 200 m / min or less. Also, spinning stability is poor at 5000 m / min or more.
得られた未延伸糸は、海成分を抽出後に得られる極細繊維の用途・目的に応じて、そのままカット工程あるいはその後の抽出工程に供してもよいし、目的とする強度・伸度・熱収縮特性に合わせるために、延伸工程や熱処理工程を経由して、カット工程あるいはその後の抽出工程に供することができる。延伸工程は紡糸と延伸を別ステップで行う別延方式でもよいし、一工程内で紡糸後直ちに延伸を行う直延方式を用いてもかまわない。 The obtained undrawn yarn may be subjected to the cutting process or the subsequent extraction process as it is depending on the use and purpose of the ultrafine fiber obtained after extracting the sea component, and the intended strength, elongation, and heat shrinkage may be used. In order to match the characteristics, it can be subjected to a cutting step or a subsequent extraction step via a stretching step or a heat treatment step. The stretching process may be a separate stretching method in which spinning and stretching are performed in separate steps, or a straight stretching method in which stretching is performed immediately after spinning in one process may be used.
次に、かかる複合繊維を、島径（Ｄ）に対する繊維長（Ｌ）の比（Ｌ／Ｄ）が前記の範囲内となるようにカットした後、アルカリ減量加工を施すことにより前記海成分を溶解除去するか、または、アルカリ減量加工を施すことにより前記海成分を溶解除去した後、カットする。かかるカットは、未延伸糸または延伸糸をそのまま、または数十本〜数百万本単位に束ねたトウにしてギロチンカッターやロータリーカッターなどでカットすることが好ましい。 Next, after cutting such a composite fiber so that the ratio (L / D) of the fiber length (L) to the island diameter (D) is within the above range, the sea component is obtained by subjecting to an alkali weight reduction process. The sea component is dissolved and removed by dissolution or removal or by alkali weight reduction, and then cut. Such cutting is preferably performed by using a guillotine cutter, a rotary cutter, or the like with undrawn yarn or drawn yarn as it is or with a tow bundled in units of tens to millions.
前記のアルカリ減量加工は、不織布の製造後であってもよいし、不織布の製造前であってもよい。かかるアルカリ減量加工において、繊維とアルカリ液の比率（浴比）は０．１〜５％である事が好ましく、さらには０．４〜３％である事が好ましい。０．１％未満では繊維とアルカリ液の接触は多いものの、排水等の工程性が困難となるおそれがある。一方、５％以上では繊維量が多過ぎるため、アルカリ減量加工時に繊維同士の絡み合いが発生するおそれがある。なお、浴比は下記式にて定義する。
浴比（％）＝（繊維質量（ｇｒ）／アルカリ水溶液質量（ｇｒ）×１００）
The alkali weight reduction process may be after the production of the nonwoven fabric or before the production of the nonwoven fabric. In such alkali weight reduction processing, the ratio of fiber to alkaline solution (bath ratio) is preferably 0.1 to 5%, more preferably 0.4 to 3%. If it is less than 0.1%, the contact between the fiber and the alkali liquid is large, but the processability such as drainage may be difficult. On the other hand, if the amount is 5% or more, the amount of fibers is too large, and there is a risk that fibers will be entangled during alkali weight reduction processing. The bath ratio is defined by the following formula.
Bath ratio (%) = (Fiber mass (gr) / Alkaline aqueous solution mass (gr) × 100)
また、アルカリ減量加工の処理時間は５〜６０分である事が好ましく、さらには１０〜３０分である事が好ましい。５分未満ではアルカリ減量が不十分となるおそれがある。一方、６０分以上では島成分までも減量されるおそれがある。
また、アルカリ減量加工において、アルカリ濃度は２％〜１０％である事が好ましい。２％未満では、アルカリ不足となり、減量速度が極めて遅くなるおそれがある。一方、１０％を越えるとアルカリ減量が進みすぎ、島部分まで減量されるおそれがある。
Moreover, it is preferable that the processing time of an alkali weight reduction process is 5 to 60 minutes, Furthermore, it is preferable that it is 10 to 30 minutes. If it is less than 5 minutes, the alkali weight loss may be insufficient. On the other hand, in the case of 60 minutes or more, the island component may be reduced.
In the alkali weight reduction processing, the alkali concentration is preferably 2% to 10%. If it is less than 2%, the alkali is insufficient, and the weight loss rate may be extremely slow. On the other hand, if it exceeds 10%, the weight loss of alkali proceeds too much and there is a risk that the weight may be reduced to the island portion.
本発明の湿式不織布において、前記極細ポリエステル繊維Ａの混率としては１０〜５０重量％の範囲内（すなわち、他の有機繊維Ｂの混率が９０〜５０重量％）であることが好ましい。前記極細ポリエステル繊維Ａの混率が１０重量％未満では、花粉やウイルスなどの捕集効率が低下するおそれがある。逆に前記極細ポリエステル繊維Ａの混率が５０重量％よりも大きいと、通気性が低下するおそれがある。 In the wet nonwoven fabric of the present invention, the mixing ratio of the ultrafine polyester fibers A is preferably in the range of 10 to 50% by weight (that is, the mixing ratio of other organic fibers B is 90 to 50% by weight). When the mixing ratio of the ultra-fine polyester fiber A is less than 10% by weight, the collection efficiency of pollen and viruses may be reduced. On the contrary, if the mixing ratio of the ultrafine polyester fiber A is larger than 50% by weight, the air permeability may be lowered.
その際、他の有機繊維Ｂの単繊維繊度が０．０５〜３．０ｄｔｅｘの範囲内であることが好ましい。該単繊維繊度が０．０５ｄｔｅｘ未満では、風合いが柔らかくなるものの、抄紙工程における水流の影響を受け易く地合いが悪くなるおそれがある。逆に、該単繊維繊度が３．０ｄｔｅｘを越えると、柔軟性が損われるおそれがある。なお、単繊維繊度が０．０５〜３．０ｄｔｅｘであれば、通常、単繊維径は１０００ｎｍよりも大となる。 In that case, it is preferable that the single fiber fineness of the other organic fiber B is in the range of 0.05 to 3.0 dtex. If the single fiber fineness is less than 0.05 dtex, the texture becomes soft, but it is likely to be affected by the water flow in the paper making process, and the texture may be deteriorated. Conversely, if the single fiber fineness exceeds 3.0 dtex, the flexibility may be impaired. In addition, if the single fiber fineness is 0.05 to 3.0 dtex, the single fiber diameter is usually larger than 1000 nm.
前記有機繊維Ｂの繊維長は３〜２０ｍｍの範囲内にあること好ましい。該繊維長が３ｍｍ未満では、不織布の強度が低下するおそれがある。逆に、該繊維長が２０ｍｍを越えると、抄紙法による繊維分散が極めて悪くなり、地合いが悪化するおそれがある。 The fiber length of the organic fiber B is preferably in the range of 3 to 20 mm. If the fiber length is less than 3 mm, the strength of the nonwoven fabric may be reduced. On the contrary, if the fiber length exceeds 20 mm, fiber dispersion by the papermaking method is extremely deteriorated, and the texture may be deteriorated.
なお、前記有機繊維Ｂの繊維種類としては特に限定されず、前記のようなポリエステル繊維やポリオレフィン繊維などの合成繊維や、レーヨン繊維、綿繊維などいずれでもよい。さらには、通常バイダー繊維として用いられる、未延伸ポリエステル繊維、低融点の共重合ポリエステル繊維、鞘部に低融点ポリエチレンが配され、芯部にポリエステルが配された芯鞘型複合繊維などでもよい。 In addition, it does not specifically limit as a fiber kind of the said organic fiber B, Any of synthetic fibers, such as the above-mentioned polyester fiber and polyolefin fiber, rayon fiber, cotton fiber, etc. may be sufficient. Furthermore, it may be an unstretched polyester fiber, a low-melting copolymer polyester fiber, a core-sheath type composite fiber in which a low-melting point polyethylene is disposed in the sheath part and a polyester is disposed in the core part, which is usually used as a binder fiber.
また、本発明の湿式不織布において、抗菌剤または消臭剤が付着している。かかる抗菌剤または消臭剤としては、植物由来エキスや光触媒などが例示される。
ここで、植物由来エキスは、植物または藻類または菌類の全部、または花、葉、茎、果実、樹皮、根、種、樹脂等の特定の部位を、そのまま、または圧搾、乾燥粉砕もしくは発酵等を加えてから、常温又は加温下で溶媒により抽出することにより得られるもので、水、エタノール、プロピレングリコール又は油脂に溶解するものをいう。あるいは、該抽出液を希釈し、濃縮し、または乾燥したものでもよい。さらに、水蒸気蒸留法、抽出法、クロマトグラフィー法等を用いて精油としたものでもよい。
Moreover, in the wet nonwoven fabric of this invention, the antibacterial agent or the deodorizing agent has adhered. Examples of such antibacterial agents or deodorants include plant-derived extracts and photocatalysts.
Here, the plant-derived extract is the whole plant or algae or fungi, or specific parts such as flowers, leaves, stems, fruits, bark, roots, seeds, resins, etc. In addition, it is obtained by extraction with a solvent at room temperature or under heating, and is soluble in water, ethanol, propylene glycol or fats and oils. Alternatively, the extract may be diluted, concentrated or dried. Further, it may be an essential oil obtained by using a steam distillation method, an extraction method, a chromatography method or the like.
かかる植物エキスとしては、アスナロエキス、イザヨイバラエキス、オウゴンエキス、オタネニンジンエキス、カミツレエキス、キハダ樹皮エキス、クララエキス、クロレラエキス、シラカバエキス、セイヨウノコギリソウエキス、チューベロース、ハマメリスエキス、ビワ葉エキス、ブナエキス、メリッサエキス、ユーカリエキス、ユーカリ油、ユキノシタエキス、ユリエキス、ヨモギエキス、褐藻エキス、緑茶エキス、柿タンニンエキスなどが好適である。 Such plant extracts include Asunaro extract, Isaiyobara extract, Ogon extract, Panax ginseng extract, chamomile extract, yellowfin bark extract, Clara extract, Chlorella extract, birch extract, Achillea millefolium extract, tuberose, hamamelis extract, loquat leaf extract, beech extract, Melissa Extracts, eucalyptus extract, eucalyptus oil, yukinoshita extract, lily extract, mugwort extract, brown algae extract, green tea extract, salmon tannin extract and the like are suitable.
前記抗菌剤または消臭剤の付着量としては、湿式不織布全重量に対し１〜１０重量％の範囲内であることが好ましい。該付着量が１重量％未満では、十分な抗菌性または消臭性が得られないおそれがある。逆に、該付着量が１０重量％よりも多く付着させても効果が飽和してしまいコストアップとなるおそれがある。 The adhesion amount of the antibacterial agent or deodorant is preferably in the range of 1 to 10% by weight based on the total weight of the wet nonwoven fabric. If the adhesion amount is less than 1% by weight, sufficient antibacterial or deodorant properties may not be obtained. On the contrary, even if the adhesion amount is more than 10% by weight, the effect is saturated and the cost may be increased.
前記の湿式不織布は、例えば以下の製造方法により製造することができる。まず、前記の極細ポリエステル繊維Ａまたはその前駆体（海島型複合繊維）を用意する。その際、前記の極細ポリエステル繊維Ａまたはその前駆体（海島型複合繊維）と、前記の有機繊維Ｂとを、極細ポリエステル繊維Ａ（海島型複合繊維の海成分を溶解除去した後の重量）と有機繊維Ｂとの重量比が（前者／後者）１０／９０〜５０／５０の範囲内となるように用意することが好ましい。 The wet nonwoven fabric can be manufactured, for example, by the following manufacturing method. First, the ultra fine polyester fiber A or a precursor thereof (sea-island type composite fiber) is prepared. At that time, the ultra fine polyester fiber A or a precursor thereof (sea-island type composite fiber) and the organic fiber B are super fine polyester fiber A (weight after dissolving and removing sea components of the sea-island type composite fiber); It is preferable to prepare such that the weight ratio with the organic fiber B is within the range of (the former / the latter) 10/90 to 50/50.
次いで、湿式抄造法によりウェブを形成した後、熱処理工程を経てから、必要に応じて高圧水流処理やカレンダー加工を施しても良いし、湿式抄造法により得られたウェブを未乾燥のまま、高圧水流処理やカレンダー加工を施しても良い。なお、前記高圧水流を行う際、シートは単体でもよいし、原綿組成を互いに異にするシートを２層以上積層してもよい。また、前記高圧水流を行う際、前記シートと他の布帛とを積層してもよい。次いで、必要に応じて、前述のようにアルカリ減量加工を施すことにより、海島型複合繊維の海成分を溶解除去する。 Next, after forming the web by the wet papermaking method, after passing through the heat treatment step, it may be subjected to high-pressure water flow treatment or calendering as necessary, or the web obtained by the wet papermaking method may be subjected to high pressure without being dried. Water flow treatment or calendar processing may be applied. In addition, when performing the said high-pressure water flow, a sheet | seat may be a single body and you may laminate | stack two or more sheets which mutually differ in raw cotton composition. Moreover, when performing the said high pressure water flow, you may laminate | stack the said sheet | seat and another fabric. Next, if necessary, the sea component of the sea-island type composite fiber is dissolved and removed by performing an alkali weight reduction process as described above.
次いで、該湿式不織布に抗菌剤または消臭剤を付着させることにより、本発明の湿式不織布が得られる。その際、抗菌剤または消臭剤を付着させる方法は公知の方法でよく、例えば、抗菌剤または消臭剤と、必要に応じてバインダー樹脂とを含む分散体を、パデング法やスプレー法などにより湿式不織布に付与し、乾燥させるとよい。 Next, the wet nonwoven fabric of the present invention is obtained by attaching an antibacterial agent or deodorant to the wet nonwoven fabric. At that time, the method of attaching the antibacterial agent or deodorant may be a known method. For example, a dispersion containing the antibacterial agent or deodorant and, if necessary, a binder resin is applied by a padding method or a spray method. It may be applied to a wet nonwoven fabric and dried.
かくして得られた湿式不織布において、通気度が５〜１００ｃｃ／ｃｍ２／ｓｅｃ（より好ましくは１０〜５０ｃｃ／ｃｍ２／ｓｅｃ）の範囲内である好ましい。該通気度が５ｃｃ／ｃｍ２／ｓｅｃよりも小さいと、空気の通りが悪く顔マスクなどと使えないおそれがある。逆に、該通気度が１００ｃｃ／ｃｍ２／ｓｅｃよりも大きいと、抗菌性または消臭性が低下するおそれがある。 In the wet nonwoven fabric thus obtained, the air permeability is preferably in the range of 5 to 100 cc / cm 2 / sec (more preferably 10 to 50 cc / cm 2 / sec). If the air permeability is less than 5 cc / cm 2 / sec, there is a possibility that the air is bad and cannot be used as a face mask. On the other hand, when the air permeability is higher than 100 cc / cm 2 / sec, the antibacterial or deodorizing properties may be lowered.
本発明の湿式不織布には前記のような極めて繊度が小さい繊維が含まれており、該繊維の表面積が大きいため、極めて優れた抗菌性または消臭性を奏する。
次に、本発明の繊維製品は前記の湿式不織布を用いてなり、エアフィルター、花粉用マスク、防塵用マスク、および抗ウイルス用マスクからなる群より選択されるいずれかの繊維製品である。
これらの繊維製品は前記の湿式不織布を用いているので、極めて優れた抗菌性または消臭性を奏する。
The wet nonwoven fabric of the present invention contains fibers with extremely small fineness as described above, and exhibits a very excellent antibacterial or deodorant property because the surface area of the fibers is large.
Next, the textile product of the present invention is any textile product selected from the group consisting of an air filter, a pollen mask, a dustproof mask, and an antiviral mask, using the wet nonwoven fabric.
Since these textile products use the wet nonwoven fabric described above, they exhibit extremely excellent antibacterial or deodorant properties.
次に本発明の実施例及び比較例を詳述するが、本発明はこれらによって限定されるものではない。なお、実施例中の各測定項目は下記の方法で測定した。
（１）溶融粘度
乾燥処理後のポリマーを紡糸時のルーダー溶融温度に設定したオリフィスによって５分間溶融保持したのち、数水準の荷重をかけて押し出し、そのときのせん断速度と溶融粘度をプロットする。そのプロットをなだらかにつないで、せん断速度―溶解温度で浴比１００として、溶解時間と溶解量から減量速度を算出した。
（２）溶解速度測定
海成分および島成分のポリマーを各々、径０．３ｍｍ、長さ０．６ｍｍのキャピラリーを２４孔もつ口金から吐出し、１０００〜２０００ｍ/分の紡糸速度で引き取って得た未延伸糸を残留伸度が３０〜６０％の範囲になるように延伸して、８３ｄｔｘ/２４フィラメントのマルチフィラメントを作成した。これを所定の溶剤および溶解温度で浴比１００として、溶解時間と溶解量から減量速度を算出した。
（３）島径との測定
透過型電子顕微鏡ＴＥＭで、倍率３００００倍で繊維断面写真を撮影し、測定した。ＴＥＭの機械によっては測長機能を活用して測定し、また無いＴＥＭについては、撮った写真を拡大コピーして、縮尺を考慮した上で定規にて測定すればよい。ただし、繊維径は、繊維断面におけるその外接円の直径を用いた。（ｎ数５の平均値）
（４）繊維長
走査型電子顕微鏡（ＳＥＭ）により、海成分溶解除去前の極細短繊維を基盤上に寝かせた状態とし、２０〜５００倍で測定した。ＳＥＭの測長機能を活用して測定した（ｎ数５の平均値）
（５）目付
ＪＩＳ Ｐ８１２４（紙の坪量測定方法）に基づいて測定した。
（６）厚み
ＪＩＳ Ｐ８１１８（紙及び板紙の厚さと密度の試験方法）に基づいて測定した。
（７）密度
ＪＩＳ Ｐ８１１８（紙及び板紙の厚さと密度の試験方法）に基づいて測定した。
（８）バクテリア濾過効率（ＢＦＥ）
ＡＳＴＭ Ｆ ２０１０（細菌濾過効率測定法）に基づいて測定した。
（９）通気度
ＪＩＳ Ｌ１０９６ ８．２７．１Ａ法（フラジール法）に基づいて測定した。
（１０）アンモニア消臭率
ＳＥＫ（消臭加工繊維製品認定基準）に基づいて測定した。
Next, although the Example and comparative example of this invention are explained in full detail, this invention is not limited by these. In addition, each measurement item in an Example was measured with the following method.
(1) Melt Viscosity The polymer after the drying treatment is melt-held for 5 minutes by an orifice set to the ruder melting temperature at the time of spinning, and then extruded under several levels of load, and the shear rate and melt viscosity at that time are plotted. The plot was gently connected, and the rate of weight loss was calculated from the dissolution time and the dissolution amount, with a bath ratio of 100 at the shear rate-dissolution temperature.
(2) Measurement of dissolution rate Each of the sea component and island component polymers was obtained by discharging a capillary having a diameter of 0.3 mm and a length of 0.6 mm from a die having 24 holes and pulling at a spinning speed of 1000 to 2000 m / min. The undrawn yarn was drawn so that the residual elongation was in the range of 30 to 60% to prepare a multifilament of 83 dtx / 24 filaments. Using this as a bath ratio of 100 at a predetermined solvent and dissolution temperature, the rate of weight loss was calculated from the dissolution time and the dissolution amount.
(3) Measurement with Island Diameter A transmission electron microscope TEM was used to take and measure a fiber cross-sectional photograph at a magnification of 30000 times. Depending on the TEM machine, the length measurement function is used for measurement, and for a TEM that does not exist, the photograph taken may be enlarged and copied with a ruler after taking the scale into consideration. However, the diameter of the circumscribed circle in the fiber cross section was used as the fiber diameter. (Average value of n number 5)
(4) Fiber length Using a scanning electron microscope (SEM), the ultrafine short fibers before being dissolved and removed from the sea component were placed on the base and measured at 20 to 500 times. Measured using the length measurement function of SEM (average value of n number 5)
(5) Weight per unit area Measured based on JIS P8124 (paper basis weight measuring method).
(6) Thickness Measured based on JIS P8118 (Test method for thickness and density of paper and paperboard).
(7) Density The density was measured based on JIS P8118 (Test method for thickness and density of paper and paperboard).
(8) Bacterial filtration efficiency (BFE)
It was measured based on ASTM F 2010 (Bacterial filtration efficiency measurement method).
(9) Air permeability Measured based on JIS L1096 8.27.1A method (Fragile method).
(10) Ammonia deodorization rate It measured based on SEK (deodorization processed textile product recognition standard).
[実施例１]
島成分に２８５℃での溶融粘度が１２０Ｐａ・secのポリエチレンテレフタレート、海成分に２８５℃での溶融粘度が１３５Ｐａ・secである平均分子量４０００のポリエチレングリコールを４重量％、５−ナトリウムスルホイソフタル酸を９ｍｏｌ％共重合した改質ポリエチレンテレフタレートを使用し、海：島＝１０：９０の重量比率で島数４００の口金を用いて紡糸し、紡糸速度１５００ｍ／ｍｉｎで引き取った。海成分と島成分とのアルカリ減量速度比は１０００倍であった。これを３．９倍に延伸した後、４％ＮａＯＨ水溶液で７５℃にて２５％減量したところ、繊維径が比較的均一な極細繊維が生成していることを確認、該繊維をギロチンカッターにて１ｍｍにカットして極細短繊維を得た。本繊維を極細ポリエステル繊維Ａとした（単繊維径（Ｄ）が７００ｎｍ、繊維長（Ｌ）が１００００００ｎｍ、Ｌ／Ｄが１４２９）。
[Example 1]
Polyethylene terephthalate with a melt viscosity at 285 ° C. of 120 Pa · sec as the island component, polyethylene glycol with an average molecular weight of 4000 with a melt viscosity at 285 ° C. of 135 Pa · sec as the sea component, 4% by weight of 5-sodium sulfoisophthalic acid Using 9 mol% copolymerized modified polyethylene terephthalate, spinning was performed using a die having a number of islands of 400 at a weight ratio of sea: island = 10: 90, and taken up at a spinning speed of 1500 m / min. The alkali weight loss rate ratio between the sea component and the island component was 1000 times. This was stretched 3.9 times and then reduced by 25% with a 4% NaOH aqueous solution at 75 ° C., and it was confirmed that ultrafine fibers having a relatively uniform fiber diameter were formed, and the fibers were used as a guillotine cutter. And cut to 1 mm to obtain ultrafine short fibers. This fiber was designated as ultra-fine polyester fiber A (single fiber diameter (D) was 700 nm, fiber length (L) was 1000000 nm, and L / D was 1429).
一方、基本ベースの原綿はポリエチレンテレフタレート繊維(単繊維繊度２．２ｄｔｅｘ、繊維長５ｍｍ)を用い、バインダー繊維として、低融点ポリエステル繊維（単繊維繊度０．２ｄｔｅｘ、繊維長３ｍｍ）と、芯部にポリエチレンテレフタレート、鞘部に低融点ポリエチレンが配された複合繊維（単繊維繊度１．２ｄｔｅｘ、繊維長５ｍｍ）とを用いた。 On the other hand, the base base cotton uses polyethylene terephthalate fiber (single fiber fineness 2.2 dtex, fiber length 5 mm), as binder fiber, low melting point polyester fiber (single fiber fineness 0.2 dtex, fiber length 3 mm), and core Polyethylene terephthalate and a composite fiber (single fiber fineness 1.2 dtex, fiber length 5 mm) in which a low melting point polyethylene is arranged in the sheath were used.
ついで、前記極細ポリエステル繊維Ａ（１５重量％）／基本ベースの前記ポリエチレンテレフタレート繊維５０重量％／低融点ポリエステル繊維１０重量％／複合繊維２５重量％を混合攪拌した後、湿式抄紙機にて目付２０ｇ／ｍ２の湿式不織布を得た。得られた湿式不織布に、パデング法により緑茶エキス含有の水分散体を付与した後、乾燥させることにより、緑茶エキスを湿式不織布重量に対して有効成分で２重量％付与した。得られた不織布物性を表１に示す。
次いで、該湿式不織布を用いて花粉用マスクを得て使用したところ、花粉の捕集効率に優れていた。
Next, the ultrafine polyester fiber A (15% by weight) / the base-based polyethylene terephthalate fiber 50% by weight / low melting point polyester fiber 10% by weight / composite fiber 25% by weight were mixed and stirred, and then a wet paper machine weight of 20 g. / M 2 wet nonwoven fabric was obtained. The obtained wet nonwoven fabric was given a green tea extract-containing aqueous dispersion by the padding method, and then dried to give the green tea extract 2% by weight as an active ingredient with respect to the wet nonwoven fabric weight. The obtained nonwoven fabric properties are shown in Table 1.
Next, when a pollen mask was obtained and used using the wet nonwoven fabric, the pollen collection efficiency was excellent.
[実施例２]
実施例１で得られた湿式不織布を２枚重ねた。得られた不織布物性を表１に示す。
[Example 2]
Two wet nonwoven fabrics obtained in Example 1 were stacked. The obtained nonwoven fabric properties are shown in Table 1.
[実施例３]
実施例１において、基本原綿の材料をポリプロピレン繊維に変更すること以外は実施例１と同様にした。得られた不織布物性を表１に示す。
[Example 3]
In Example 1, it carried out similarly to Example 1 except having changed the material of basic raw cotton into the polypropylene fiber. The obtained nonwoven fabric properties are shown in Table 1.
[実施例４]
実施例１において、緑茶エキスを有効成分０．５重量％付与すること以外は実施例１と同様にした。得られた不織布物性を表１に示す。
[Example 4]
In Example 1, it carried out similarly to Example 1 except providing 0.5 weight% of active ingredients with a green tea extract. The obtained nonwoven fabric properties are shown in Table 1.
[実施例５]
実施例１において、不織布に緑茶エキスを有効成分１１．０重量％付与すること以外は実施例１と同様にした。得られた不織布物性を表１に示す。
[Example 5]
In Example 1, it carried out similarly to Example 1 except giving a green tea extract 11.0 weight% of active ingredients to a nonwoven fabric. The obtained nonwoven fabric properties are shown in Table 1.
[比較例１]
実施例１において、極細ポリエステル繊維Ａを、単繊維繊度０．１ｄｔｅｘのポリエチレンテレフタレート繊維からなる極細繊維に変更すること以外は実施例１と同様にした。得られた不織布物性を表１に示す。
[Comparative Example 1]
Example 1 was the same as Example 1 except that the ultrafine polyester fiber A was changed to an ultrafine fiber made of polyethylene terephthalate fiber having a single fiber fineness of 0.1 dtex. The obtained nonwoven fabric properties are shown in Table 1.
[比較例２]
実施例１における不織布の目付を８ｇ／ｍ２に変更すること以外は実施例１と同様にした。得られた不織布物性を表１に示す。
[Comparative Example 2]
The same procedure as in Example 1 was performed except that the basis weight of the nonwoven fabric in Example 1 was changed to 8 g / m 2 . The obtained nonwoven fabric properties are shown in Table 1.
[比較例３]
実施例１における不織布の目付を６０ｇ／ｍ２に変更すること以外は実施例１と同様にした。得られた不織布物性を表１に示す。
[Comparative Example 3]
The same procedure as in Example 1 was conducted except that the basis weight of the nonwoven fabric in Example 1 was changed to 60 g / m 2 . The obtained nonwoven fabric properties are shown in Table 1.
本発明によれば、優れた抗菌性または消臭性を有する湿式不織布、および該湿式不織布を用いてなる繊維製品が提供され、その工業的価値は極めて大である。 ADVANTAGE OF THE INVENTION According to this invention, the wet nonwoven fabric which has the outstanding antibacterial property or deodorizing property, and the textiles using this wet nonwoven fabric are provided, The industrial value is very large.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010242195A JP2012092466A (en) | 2010-10-28 | 2010-10-28 | Wet-laid nonwoven fabric and textile product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010242195A JP2012092466A (en) | 2010-10-28 | 2010-10-28 | Wet-laid nonwoven fabric and textile product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2012092466A true JP2012092466A (en) | 2012-05-17 |
Family
ID=46386121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010242195A Pending JP2012092466A (en) | 2010-10-28 | 2010-10-28 | Wet-laid nonwoven fabric and textile product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2012092466A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013256739A (en) * | 2012-06-14 | 2013-12-26 | Teijin Ltd | Nonwoven fabric for mask and mask |
| KR20160071428A (en) | 2013-10-17 | 2016-06-21 | 도아고세이가부시키가이샤 | Deodorizing filter |
| EP3225294A4 (en) * | 2015-11-19 | 2017-12-27 | Teijin Limited | Filtering fabric for bag filter, production method therefor and bag filter |
| JP2019013345A (en) * | 2017-07-04 | 2019-01-31 | 大王製紙株式会社 | Non-woven fabric for extraction filter and method for manufacturing the same |
-
2010
- 2010-10-28 JP JP2010242195A patent/JP2012092466A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013256739A (en) * | 2012-06-14 | 2013-12-26 | Teijin Ltd | Nonwoven fabric for mask and mask |
| KR20160071428A (en) | 2013-10-17 | 2016-06-21 | 도아고세이가부시키가이샤 | Deodorizing filter |
| EP3225294A4 (en) * | 2015-11-19 | 2017-12-27 | Teijin Limited | Filtering fabric for bag filter, production method therefor and bag filter |
| CN111495054A (en) * | 2015-11-19 | 2020-08-07 | 帝人富瑞特株式会社 | Filter cloth for bag filter, method for manufacturing same, and bag filter |
| US11253801B2 (en) | 2015-11-19 | 2022-02-22 | Teijin Frontier Co., Ltd. | Filter cloth for bag filter, method for producing the same, and bag filter |
| JP2019013345A (en) * | 2017-07-04 | 2019-01-31 | 大王製紙株式会社 | Non-woven fabric for extraction filter and method for manufacturing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5027688B2 (en) | Flexible nonwoven fabric | |
| JP5607748B2 (en) | Multilayer filter media and filters | |
| EP2138634B1 (en) | Wet-laid non-woven fabric and filter | |
| EP2796180B1 (en) | Filtration material for filter, method for manufacturing same, filter and use | |
| JP6397121B2 (en) | Bag filter filter cloth, manufacturing method thereof, and bag filter | |
| KR20180121613A (en) | Filter for liquid filter and liquid filter | |
| JP5284889B2 (en) | Fiber products | |
| JP2010070870A (en) | Method for producing nonwoven fabric, the nonwoven fabric, nonwoven fabric structure, and textile product | |
| JP2013256739A (en) | Nonwoven fabric for mask and mask | |
| JP2014074246A (en) | Wet nonwoven fabric for liquid filtration filter and liquid filtration filter | |
| JP5558989B2 (en) | Non-woven fabric for cosmetic products and cosmetic products | |
| JP2012092466A (en) | Wet-laid nonwoven fabric and textile product | |
| JP2019199668A (en) | Mask filter and face mask | |
| JP2012223396A (en) | Nonwoven fabric for cosmetic product, and the cosmetic product | |
| JP2013159880A (en) | Nonwoven fabric | |
| JP2019099946A (en) | Nonwoven fabric and filter medium for bag filter | |
| JP2013256461A (en) | Sheet for body skin contact and cosmetic product | |
| JP2012237084A (en) | Nonwoven fabric for filter and air filter | |
| JP3725716B2 (en) | Ultrafine fiber generation possible fiber, ultrafine fiber generated from this, and fiber sheet using this ultrafine fiber | |
| JP6462368B2 (en) | Wet nonwovens and shoji paper and products | |
| JP4922964B2 (en) | Dry nonwoven fabric | |
| JP3185098U (en) | Cosmetic puff | |
| JP2023012165A (en) | Filter media for masks and masks | |
| JP2018189346A (en) | Water-absorptive and volatile material | |
| JP7044526B2 (en) | Filter media for liquid filters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20130219 |