JP6824023B2 - Nanofibers, nanofiber manufacturing methods and masks - Google Patents
Nanofibers, nanofiber manufacturing methods and masks Download PDFInfo
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- JP6824023B2 JP6824023B2 JP2016248458A JP2016248458A JP6824023B2 JP 6824023 B2 JP6824023 B2 JP 6824023B2 JP 2016248458 A JP2016248458 A JP 2016248458A JP 2016248458 A JP2016248458 A JP 2016248458A JP 6824023 B2 JP6824023 B2 JP 6824023B2
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- 239000002121 nanofiber Substances 0.000 title claims description 149
- 238000004519 manufacturing process Methods 0.000 title claims description 43
- 238000009987 spinning Methods 0.000 claims description 67
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 44
- 229920001800 Shellac Polymers 0.000 claims description 30
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 claims description 30
- 229940113147 shellac Drugs 0.000 claims description 30
- 235000013874 shellac Nutrition 0.000 claims description 30
- 239000004208 shellac Substances 0.000 claims description 30
- 229930003231 vitamin Natural products 0.000 claims description 26
- 235000013343 vitamin Nutrition 0.000 claims description 26
- 239000011782 vitamin Substances 0.000 claims description 26
- 229940088594 vitamin Drugs 0.000 claims description 26
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 claims description 20
- 229930003268 Vitamin C Natural products 0.000 claims description 20
- 239000011718 vitamin C Substances 0.000 claims description 20
- 235000019154 vitamin C Nutrition 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 16
- 239000002657 fibrous material Substances 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 10
- 238000001523 electrospinning Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 30
- 239000004745 nonwoven fabric Substances 0.000 description 20
- 230000005684 electric field Effects 0.000 description 16
- 239000000463 material Substances 0.000 description 13
- 239000003208 petroleum Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 238000001878 scanning electron micrograph Methods 0.000 description 6
- 235000013305 food Nutrition 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 230000003796 beauty Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 230000036559 skin health Effects 0.000 description 3
- 241000258937 Hemiptera Species 0.000 description 2
- 239000002211 L-ascorbic acid Substances 0.000 description 2
- 235000000069 L-ascorbic acid Nutrition 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229960005070 ascorbic acid Drugs 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 241000549556 Nanos Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000011785 micronutrient Substances 0.000 description 1
- 235000013369 micronutrients Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000012261 resinous substance Substances 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
Description
本発明は、シェラックを用いたナノ繊維、当該ナノ繊維の製造方法及び本発明のナノ繊維を用いたマスクに関する。 The present invention relates to nanofibers using shellac, a method for producing the nanofibers, and a mask using the nanofibers of the present invention.
シェラック（ｓｈｅｌｌａｃ。セラックともいう。）は、ラックカイガラムシやその近縁種のカイガラムシの分泌物から得られる樹脂状の物質である。シェラックは無味無臭かつ人体に無害であることから、幅広い分野で用いられている。例を挙げると、シェラックは食品分野や医薬品分野において、ニス、ワックス、コーティング剤等として用いられている（例えば、特許文献１及び特許文献２参照。）。 Shellac (also referred to as shellac) is a resinous substance obtained from the secretions of scale insects and their related species, scale insects. Shellac is used in a wide range of fields because it is tasteless, odorless, and harmless to the human body. For example, shellac is used as a varnish, wax, coating agent, etc. in the food field and the pharmaceutical field (see, for example, Patent Document 1 and Patent Document 2).
ところで、近年、ナノオーダーの繊維径（例えば、３０００ｎｍ以下の繊維径。好ましくは、１０００ｎｍ以下の平均繊維径。）を有するナノ繊維に注目が集まっている。ナノ繊維は、マイクロオーダー以上の繊維径を有する通常の繊維とは異なる性質（例えば、極めて大きい比表面積）を有し、様々な分野で活用できると考えられている。
ナノ繊維を構成する材料としては種々の材料が用いられてきたが、その多くは石油化学の産物である合成ポリマーの類であった。現在、ナノ繊維を医療分野や食品分野等に適用することについて本格的な研究が始まっており、生体への適合性の観点から、非石油由来であり人体に無害である材料を用いたナノ繊維が希求されている。
By the way, in recent years, attention has been focused on nanofibers having a nano-order fiber diameter (for example, a fiber diameter of 3000 nm or less, preferably an average fiber diameter of 1000 nm or less). Nanofibers have properties different from ordinary fibers having a fiber diameter of microorder or more (for example, an extremely large specific surface area), and are considered to be applicable in various fields.
Various materials have been used as materials for constituting nanofibers, but most of them are synthetic polymers which are products of petrochemicals. Currently, full-scale research on the application of nanofibers to the medical and food fields has begun, and from the viewpoint of compatibility with living organisms, nanofibers using materials that are non-petroleum-derived and harmless to the human body. Is sought after.
そこで、本発明は上記課題に鑑みてなされたものであり、非石油由来であり人体に無害である材料であるシェラックを用いたナノ繊維を提供することを目的とする。また、当該ナノ繊維の製造方法を提供することを目的とする。さらに、本発明のナノ繊維を用いたマスクについても提供することを目的とする。 Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide nanofibers using shellac, which is a non-petroleum-derived material that is harmless to the human body. Another object of the present invention is to provide a method for producing the nanofiber. Another object of the present invention is to provide a mask using the nanofibers of the present invention.
［１］本発明のナノ繊維は、繊維材料の主成分がシェラックであることを特徴とする。 [1] The nanofiber of the present invention is characterized in that the main component of the fiber material is shellac.
［２］本発明のナノ繊維は、ビタミン類を含有することが好ましい。 [2] The nanofibers of the present invention preferably contain vitamins.
［３］本発明のナノ繊維は、少なくともビタミンＣを含有することが好ましい。 [3] The nanofibers of the present invention preferably contain at least vitamin C.
［４］本発明のナノ繊維の製造方法は、シェラックを紡糸溶媒に溶解させて紡糸溶液を作製する紡糸溶液作製工程と、前記紡糸溶液を用いて電界紡糸を実施する電界紡糸工程とをこの順序で含むことを特徴とする。 [4] In the method for producing nanofibers of the present invention, a spinning solution manufacturing step of dissolving shellac in a spinning solvent to prepare a spinning solution and an electrospinning step of performing electrospinning using the spinning solution are performed in this order. It is characterized by including in.
［５］本発明のナノ繊維の製造方法においては、前記紡糸溶媒は、エタノールであることが好ましい。 [5] In the method for producing nanofibers of the present invention, the spinning solvent is preferably ethanol.
［６］本発明のナノ繊維の製造方法においては、前記紡糸溶液作製工程では、前記紡糸溶液にビタミン類を添加することが好ましい。 [6] In the method for producing nanofibers of the present invention, it is preferable to add vitamins to the spinning solution in the spinning solution preparation step.
［７］本発明のナノ繊維の製造方法においては、前記紡糸溶液作製工程では、前記紡糸溶液に少なくともビタミンＣを添加することが好ましい。 [7] In the method for producing nanofibers of the present invention, it is preferable to add at least vitamin C to the spinning solution in the spinning solution preparation step.
［８］本発明のマスクは、鼻口を覆う被覆体と、前記被覆体に配設された装着用部材とを備え、前記被覆体は、繊維材料の主成分がシェラックであるナノ繊維を有することを特徴とする。 [8] The mask of the present invention includes a covering body covering the nose and mouth and a mounting member arranged on the covering body, and the covering body has nanofibers in which the main component of the fiber material is shellac. It is characterized by that.
［９］本発明のマスクにおいては、前記ナノ繊維は、ビタミン類を含有することが好ましい。 [9] In the mask of the present invention, the nanofibers preferably contain vitamins.
［１０］本発明のマスクにおいては、前記ナノ繊維は、少なくともビタミンＣを含有することが好ましい。 [10] In the mask of the present invention, the nanofibers preferably contain at least vitamin C.
本発明のナノ繊維は、非石油由来の材料であり人体に無害であるシェラックを用いたナノ繊維であるため、医療分野や食品分野等に適用しやすいナノ繊維となる。 Since the nanofiber of the present invention is a nanofiber using shellac, which is a non-petroleum-derived material and is harmless to the human body, it is a nanofiber that can be easily applied to the medical field, food field, and the like.
本発明のナノ繊維の製造方法は、後述する実験例に示すように、非石油由来の材料であるシェラックを用いたナノ繊維を製造することが可能なナノ繊維の製造方法となる。 The method for producing nanofibers of the present invention is a method for producing nanofibers capable of producing nanofibers using shellac, which is a non-petroleum-derived material, as shown in an experimental example described later.
本発明のマスクは、非石油由来の材料であり人体に無害であるシェラックを用いたナノ繊維を有するため、安全性に優れたマスクとなる。 Since the mask of the present invention has nanofibers using shellac, which is a non-petroleum-derived material and is harmless to the human body, it is a mask having excellent safety.
以下、本発明に係るナノ繊維、ナノ繊維の製造方法及びマスクについて説明する。 Hereinafter, the nanofibers, the method for producing the nanofibers, and the mask according to the present invention will be described.
１．実施形態に係るナノ繊維
実施形態に係るナノ繊維は、繊維材料の主成分がシェラックであるナノ繊維である。
本明細書において「繊維材料」とは、ナノ繊維の繊維構造を構成する主材料のことをいう。本明細書における「繊維材料」には、単独ではナノ繊維の繊維構造を構成できない（ナノ繊維の形態をとることができない）物質は含まれない。
実施形態に係るナノ繊維においては、繊維材料のうちシェラックが占める割合が５０ｗｔ％以上であることが好ましく、８０ｗｔ％以上であることが一層好ましく、９５ｗｔ％以上であることがより一層好ましい。当然、繊維材料が全てシェラックであってもよい。実施形態に係るナノ繊維において繊維材料が全てシェラックである場合には、非石油由来の材料であり人体に無害であるというシェラックの特徴を完全に発揮することが可能となり、その結果、医療分野や食品分野等に一層適用しやすいナノ繊維となる。
1. 1. Nanofibers According to the Embodiment The nanofibers according to the embodiment are nanofibers in which the main component of the fiber material is shellac.
As used herein, the term "fiber material" refers to a main material that constitutes the fiber structure of nanofibers. The "fiber material" in the present specification does not include a substance that cannot form the fiber structure of nanofibers (cannot take the form of nanofibers) by itself.
In the nanofibers according to the embodiment, the proportion of shellac in the fiber material is preferably 50 wt% or more, more preferably 80 wt% or more, and even more preferably 95 wt% or more. Of course, all the fiber materials may be shellac. When all the fiber materials in the nanofibers according to the embodiment are shellac, it is possible to fully exhibit the characteristic of shellac that it is a non-petroleum-derived material and is harmless to the human body, and as a result, in the medical field and It will be a nanofiber that is easier to apply to the food field.
実施形態に係るナノ繊維は、繊維としての形態を維持できる限りにおいて、繊維材料以外の物質を含有していてもよい。また、実施形態に係るナノ繊維は、ビタミン類を含有することが好ましい。
本明細書において「ビタミン類」とは、生物が必要とする微量栄養素であって、炭水化物、タンパク質及び脂質ではないもののことをいう。本明細書における「ビタミン類」は、生体に作用する際にビタミン類の形態をとるものであればよく、ナノ繊維に含有されている段階では、ビタミン類の誘導体や前駆体であってもよい。
実施形態に係るナノ繊維は、少なくともビタミンＣ（Ｌ−アスコルビン酸）を含有することが好ましい。
The nanofibers according to the embodiment may contain a substance other than the fiber material as long as the form as a fiber can be maintained. In addition, the nanofibers according to the embodiment preferably contain vitamins.
As used herein, the term "vitamins" refers to micronutrients required by an organism, not carbohydrates, proteins and lipids. The "vitamins" in the present specification may be in the form of vitamins when acting on a living body, and may be derivatives or precursors of vitamins at the stage of being contained in nanofibers. ..
The nanofibers according to the embodiment preferably contain at least vitamin C (L-ascorbic acid).
ビタミン類の含有量としては、含有させるビタミン類の種類によって好適な量を用いることができる。後述する実験例２においては、ビタミンＣの重量がナノ繊維の重量の２０％を占める（繊維材料の重量に対して２５％である）が、これは一例にすぎない。
なお、ナノ繊維に含有されているビタミン類は、ナノ繊維中を移動する、ナノ繊維が自然分解する等のメカニズムにより、ナノ繊維から徐々に放出されると考えられる。
As the content of vitamins, an appropriate amount can be used depending on the type of vitamins to be contained. In Experimental Example 2 described later, the weight of vitamin C accounts for 20% of the weight of the nanofibers (25% with respect to the weight of the fiber material), but this is only an example.
It is considered that the vitamins contained in the nanofibers are gradually released from the nanofibers by a mechanism such as moving in the nanofibers or spontaneously decomposing the nanofibers.
また、実施形態に係るナノ繊維は、ナノ繊維としての形態を維持できる限りにおいて、ビタミン類以外の物質を１種類以上含有していてもよい。ビタミン類以外の物質としては、例えば、各種薬剤、粒子状の物質（触媒等）、多孔質の物質（吸着材等）を挙げることができる。 Further, the nanofibers according to the embodiment may contain one or more kinds of substances other than vitamins as long as the form as nanofibers can be maintained. Examples of substances other than vitamins include various drugs, particulate matter (catalyst, etc.), and porous substance (adsorbent, etc.).
２．実施形態に係るナノ繊維の製造方法
図１は、実施形態に係るナノ繊維の製造方法のフローチャートである。
図２は、実施形態におけるナノ繊維製造装置１００の模式図である。図２は電界紡糸を行っているときの様子を示している。
実施形態に係るナノ繊維の製造方法は、図１に示すように、紡糸溶液作成工程Ｓ１０と電界紡糸工程Ｓ２０とをこの順序で含む。以下、各工程について説明する。
2. 2. Manufacturing Method of Nanofibers According to the Embodiment FIG. 1 is a flowchart of a manufacturing method of the nanofibers according to the embodiment.
FIG. 2 is a schematic view of the nanofiber manufacturing apparatus 100 according to the embodiment. FIG. 2 shows a state during electric field spinning.
As shown in FIG. 1, the method for producing nanofibers according to the embodiment includes a spinning solution preparation step S10 and an electric field spinning step S20 in this order. Hereinafter, each step will be described.
紡糸溶液作成工程Ｓ１０は、シェラックを紡糸溶媒に溶解させて紡糸溶液を作製する工程である。
紡糸溶媒としては、シェラックを溶解可能な溶媒を用いることができ、エタノールを好適に用いることができる。なお、本明細書において単に「エタノール」といった場合には、無水エタノール（エタノールの純度が９９．５％以上のもの）のことをいう。
また、紡糸溶液作製工程Ｓ１０では、紡糸溶液にビタミン類を添加することもできる。この場合、紡糸溶液に少なくともビタミンＣを添加することが好ましい。また、紡糸溶液作製工程Ｓ１０では、紡糸溶液にビタミン類以外の物質を添加してもよい。
The spinning solution preparation step S10 is a step of dissolving shellac in a spinning solvent to prepare a spinning solution.
As the spinning solvent, a solvent capable of dissolving shellac can be used, and ethanol can be preferably used. In addition, when the term "ethanol" is simply used in the present specification, it means absolute ethanol (ethanol having a purity of 99.5% or more).
Further, in the spinning solution preparation step S10, vitamins can be added to the spinning solution. In this case, it is preferable to add at least vitamin C to the spinning solution. Further, in the spinning solution preparation step S10, substances other than vitamins may be added to the spinning solution.
電界紡糸工程Ｓ２０は、紡糸溶液を用いて電界紡糸を実施する工程である。
電界紡糸工程Ｓ２０は、例えば、図２に示すような電界紡糸装置１００を用いて実施することができる。
図２において符号１で示すのは紡糸溶液であり、符号１０２で示すのは紡糸溶液を入れる溶液タンクであり、符号１０４で示すのはバルブであり、符号１０６で示すのはノズルであり、符号１０８で示すのはコレクターであり、符号１１０で示すのは電源装置である。
実施形態においては、ナノ繊維はコレクター１０８上に堆積された不織布２として得ることができる。ナノ繊維は、不織布２のまま用いてもよいし、繊維ごとに引き出してから糸にして用いてもよいし、不織布２全体を撚って糸にして用いてもよい。
The electric field spinning step S20 is a step of carrying out electric field spinning using a spinning solution.
The electric field spinning step S20 can be carried out using, for example, the electric field spinning device 100 as shown in FIG.
In FIG. 2, reference numeral 1 is a spinning solution, reference numeral 102 is a solution tank containing a spinning solution, reference numeral 104 is a valve, and reference numeral 106 is a nozzle. The collector is indicated by 108, and the power supply is indicated by reference numeral 110.
In the embodiment, the nanofibers can be obtained as a non-woven fabric 2 deposited on the collector 108. The nanofibers may be used as they are in the non-woven fabric 2, may be used as threads after drawing out each fiber, or the entire non-woven fabric 2 may be twisted and used as threads.
なお、図２においては、コレクター１０８として平板状のものが記載されているが、本発明はこれに限定されるものではない。コレクターとしては、ドラム状であって回転可能なものやベルトコンベア状であって回転可能なもの（つまり、長尺の不織布を連続的に製造可能なもの）を用いてもよい。 Although a flat plate-shaped collector 108 is shown in FIG. 2, the present invention is not limited thereto. As the collector, a drum-shaped and rotatable one or a belt conveyor-shaped and rotatable one (that is, one capable of continuously producing a long non-woven fabric) may be used.
以上の工程により、実施形態に係るナノ繊維を製造することができる。 By the above steps, the nanofibers according to the embodiment can be produced.
３．実施形態に係るマスク
図３は、実施形態に係るマスク１０を説明するために示す図である。図３（ａ）はマスク１０の正面図であり、図３（ｂ）は図３（ａ）のＡ−Ａ面での断面図であり、図３（ｃ）は図３（ａ）のＢ−Ｂ面での断面図である。
3. 3. The mask according to the embodiment FIG. 3 is a diagram shown for explaining the mask 10 according to the embodiment. 3 (a) is a front view of the mask 10, FIG. 3 (b) is a sectional view taken along the plane AA of FIG. 3 (a), and FIG. 3 (c) is B of FIG. 3 (a). It is sectional drawing on the B plane.
実施形態に係るマスク１０は、図３に示すように、鼻口を覆う長方形状の被覆体２０と、被覆体２０の短辺側に配設された装着用部材としての紐３０とを備える。
被覆体２０は、複数枚の長方形状の積層体から構成される複合体４０であって、その外周部が帯状不織布５０，６０で熱圧着されて一体化されている。複合体４０の長辺側の外周部は帯状不織布５０で覆われた状態でエンボス加工により熱圧着されており、複合体の短辺側の外周部は帯状不織布６０で覆われた状態でエンボス加工により熱圧着されている。
帯状不織布５０，６０の外周部には、エンボス加工を施した複数の熱圧着部５２，６２が形成されている。また、被覆体２０には、その長辺方向に沿って複数本のプリーツが形成されており、各プリーツの両端部は帯状不織布６０で固定されている。
As shown in FIG. 3, the mask 10 according to the embodiment includes a rectangular covering body 20 that covers the nose and mouth, and a string 30 as a mounting member arranged on the short side side of the covering body 20.
The covering body 20 is a composite body 40 composed of a plurality of rectangular laminated bodies, and the outer peripheral portion thereof is thermocompression-bonded with the strip-shaped nonwoven fabrics 50 and 60 to be integrated. The outer peripheral portion of the composite 40 on the long side is thermocompression bonded by embossing while being covered with the strip-shaped non-woven fabric 50, and the outer peripheral portion on the short side of the composite is embossed while being covered with the strip-shaped non-woven fabric 60. Is thermocompression bonded by.
A plurality of embossed thermocompression bonding portions 52 and 62 are formed on the outer peripheral portions of the strip-shaped nonwoven fabrics 50 and 60. Further, a plurality of pleats are formed on the covering body 20 along the long side direction thereof, and both ends of the pleats are fixed by the strip-shaped non-woven fabric 60.
被覆体２０は、繊維材料の主成分がシェラックであるナノ繊維、つまり、実施形態に係るナノ繊維を有する。被覆体２０は、実施形態に係るナノ繊維を、当該ナノ繊維を用いた不織布又は布として有していてもよいし、糸として有していてもよいし、単独のナノ繊維の形で有していてもよい。 The covering body 20 has nanofibers in which the main component of the fiber material is shellac, that is, the nanofibers according to the embodiment. The covering body 20 may have the nanofibers according to the embodiment as a non-woven fabric or cloth using the nanofibers, may have as a thread, or may have the nanofibers in the form of a single nanofiber. You may be.
実施形態においては、ナノ繊維は、ビタミン類を含有することが好ましい。この場合、実施形態に係るマスクにおいては、実施形態に係るナノ繊維が、マスク１０を人体に装着したときにおける裏の面（内側の面。人体に接触する面。）側に露出していることが好ましい。また、ナノ繊維は、少なくともビタミンＣを含有することが好ましい。 In embodiments, the nanofibers preferably contain vitamins. In this case, in the mask according to the embodiment, the nanofibers according to the embodiment are exposed on the back surface (inner surface, the surface in contact with the human body) when the mask 10 is attached to the human body. Is preferable. Further, the nanofibers preferably contain at least vitamin C.
なお、被覆体２０は、複数枚の積層体を構成する積層体として、通常繊維（マイクロ繊維等）の不織布からなる積層体や、実施形態に係るナノ繊維とは異なるナノ繊維の不織布からなる積層体等をさらに有していてもよい。 The covering body 20 is a laminate made of a non-woven fabric of ordinary fibers (microfibers or the like) or a non-woven fabric of nanofibers different from the nanofibers according to the embodiment, as a laminate constituting a plurality of laminated bodies. You may have more bodies and the like.
通常繊維の不織布からなる積層体としては、例えば、メルトブローン法又はスパンボンド法により製造された不織布であって、目付が１０ｇ／ｍ２〜５０ｇ／ｍ２の範囲内にあるものを好適に用いることができる。なお、通常繊維からなる不織布を構成する繊維は、天然繊維（例えば、セルロース）、合成繊維（例えば、ポリプロピレン、ポリエチレン、ポリウレタン、ポリアミド、ポリエチレンテレフタレート等）、これらの混合繊維のいずれであってもよい。 The stack of the normal fibers of the nonwoven fabric, for example, a nonwoven fabric manufactured by a melt blown method or spunbond method, basis weight be suitably used within the range of 10g / m 2 ~50g / m 2 Can be done. The fibers constituting the non-woven fabric made of ordinary fibers may be any of natural fibers (for example, cellulose), synthetic fibers (for example, polypropylene, polyethylene, polyurethane, polyamide, polyethylene terephthalate, etc.), and mixed fibers thereof. ..
実施形態に係るナノ繊維とは異なるナノ繊維の不織布からなる積層体としては、例えば、ナノ繊維が、ポリウレタン、ポリビニルアルコール、ポリアミド又はポリフッ化ビニリデンからなるものを好適に用いることができる。その平均繊維径は５０ｎｍ〜３００ｎｍの範囲内にあることが好ましい。平均繊維径が５０ｎｍ未満の場合には、ナノ繊維の不織布を電界紡糸法で形成し難くなる場合がある。また、平均繊維径が３００ｎｍを超える場合には、ナノ繊維の不織布の比表面積が小さくなり、マスク１０の液体、有害粒子、ウイルス等の捕集効率が低下する場合がある。 As the laminate made of a non-woven fabric of nanofibers different from the nanofibers according to the embodiment, for example, those in which the nanofibers are made of polyurethane, polyvinyl alcohol, polyamide or polyvinylidene fluoride can be preferably used. The average fiber diameter is preferably in the range of 50 nm to 300 nm. When the average fiber diameter is less than 50 nm, it may be difficult to form a non-woven fabric of nanofibers by an electrospinning method. Further, when the average fiber diameter exceeds 300 nm, the specific surface area of the non-woven fabric of nanofibers becomes small, and the collection efficiency of the liquid, harmful particles, viruses and the like of the mask 10 may decrease.
４．実施形態に係るナノ繊維、ナノ繊維の製造方法及びマスク１０の効果
以下、実施形態に係るナノ繊維、ナノ繊維の製造方法及びマスク１０の効果について記載する。
4. The nanofibers, the method for producing the nanofibers and the effect of the mask 10 according to the embodiment The following describes the method for producing the nanofibers and the nanofibers and the effect of the mask 10 according to the embodiment.
実施形態に係るナノ繊維は、非石油由来の材料であり人体に無害であるシェラックを用いたナノ繊維であるため、医療分野や食品分野等に適用しやすいナノ繊維となる。 Since the nanofibers according to the embodiment are nanofibers using shellac, which is a non-petroleum-derived material and is harmless to the human body, they are easy to apply to the medical field, food field, and the like.
また、実施形態に係るナノ繊維によれば、ビタミン類を含有する場合には、ビタミン類をナノ繊維から徐々に放出させることで、当該ナノ繊維を用いた繊維製品（例えば、マスク）の使用者の健康等に資することが可能となる。 Further, according to the nanofibers according to the embodiment, when vitamins are contained, the vitamins are gradually released from the nanofibers, so that the user of the textile product (for example, a mask) using the nanofibers is used. It will be possible to contribute to the health of people.
また、実施形態に係るナノ繊維によれば、少なくともビタミンＣを含有する場合には、ビタミンＣ由来の効能、とくに皮膚の健康や美容に関する効能が期待できる。 Further, according to the nanofibers according to the embodiment, when at least vitamin C is contained, the effects derived from vitamin C, particularly the effects related to skin health and beauty can be expected.
実施形態に係るナノ繊維の製造方法は、紡糸溶液作製工程Ｓ１０と電界紡糸工程Ｓ２０とをこの順序で含むため、後述する実験例に示すように、非石油由来の材料であるシェラックを用いたナノ繊維を製造することが可能なナノ繊維の製造方法となる。 Since the method for producing nanofibers according to the embodiment includes the spinning solution preparation step S10 and the electrospinning step S20 in this order, nanos using shellac, which is a non-petroleum-derived material, as shown in an experimental example described later. It is a method for producing nanofibers capable of producing fibers.
また、実施形態に係るナノ繊維の製造方法によれば、紡糸溶媒としてエタノールを用いる場合には、人体に対する有害性が低く、かつ、環境負荷が低い溶媒を用いてナノ繊維を製造することが可能となる。 Further, according to the method for producing nanofibers according to the embodiment, when ethanol is used as the spinning solvent, nanofibers can be produced using a solvent that is less harmful to the human body and has a low environmental load. It becomes.
また、実施形態に係るナノ繊維の製造方法によれば、紡糸溶液作製工程Ｓ１０において紡糸溶液にビタミン類を添加する場合には、ビタミン類をナノ繊維から徐々に放出させることで使用者の健康に資することが可能なナノ繊維を製造することが可能となる。 Further, according to the method for producing nanofibers according to the embodiment, when vitamins are added to the spinning solution in the spinning solution preparation step S10, the vitamins are gradually released from the nanofibers to improve the health of the user. It becomes possible to produce nanofibers that can contribute.
また、実施形態に係るナノ繊維の製造方法によれば、紡糸溶液作製工程Ｓ１０において紡糸溶液に少なくともビタミンＣを添加する場合には、ビタミンＣ由来の効能、とくに皮膚の健康や美容に関する効能が期待できる実施形態に係るナノ繊維を製造することが可能となる。 Further, according to the method for producing nanofibers according to the embodiment, when at least vitamin C is added to the spinning solution in the spinning solution preparation step S10, the effects derived from vitamin C, particularly the effects related to skin health and beauty are expected. It becomes possible to produce the nanofibers according to the embodiment.
実施形態に係るマスクは、非石油由来の材料であり人体に無害であるシェラックを用いたナノ繊維を有するため、安全性に優れたマスクとなる。 Since the mask according to the embodiment has nanofibers using shellac, which is a non-petroleum-derived material and is harmless to the human body, it is a mask having excellent safety.
また、実施形態に係るマスクによれば、ナノ繊維がビタミン類を含有する場合には、ビタミン類をナノ繊維から徐々に放出させることで使用者の健康に資することが可能となる。 Further, according to the mask according to the embodiment, when the nanofibers contain vitamins, it is possible to contribute to the health of the user by gradually releasing the vitamins from the nanofibers.
また、実施形態に係るマスクによれば、ナノ繊維が少なくともビタミンＣを含有する場合には、ビタミンＣ由来の効能、とくに皮膚の健康や美容に関する効能が期待できる。 Further, according to the mask according to the embodiment, when the nanofibers contain at least vitamin C, the effects derived from vitamin C, particularly the effects related to skin health and beauty can be expected.
［実験例１］
実験例１においては、本発明のナノ繊維を本発明のナノ繊維の製造方法に従って実際に製造し、その形態を確認した。
[Experimental Example 1]
In Experimental Example 1, the nanofibers of the present invention were actually produced according to the method for producing nanofibers of the present invention, and their morphology was confirmed.
１．実験例１で用いた原料等及び装置
まず、実験例１で用いた原料等及び装置について説明する。なお、汎用の実験器具及び実験装置については、説明を省略する。
1. 1. Raw materials and equipment used in Experimental Example 1 First, the raw materials and equipment used in Experimental Example 1 will be described. The description of general-purpose laboratory equipment and experimental equipment will be omitted.
実験例１で用いた原料、溶媒及び試薬は、シグマアルドリッチジャパン合同会社を通じて購入したものをそのまま用いた。 As the raw materials, solvents and reagents used in Experimental Example 1, those purchased through Sigma-Aldrich Japan GK were used as they were.
電界紡糸における電源装置としては、株式会社メックのＨＶＵ−３０Ｐ１００を用いた。
電界紡糸に用いるコレクターとしては、接地した回転型ドラムコレクターを用いた。当該回転型ドラムコレクターは、市販のクッキングシートで覆い、その上から電界紡糸を行った。
キャピラリーチップとしては、株式会社トーホーのトレフチップ チップ８７００を用いた。
紡糸溶液の吐出量を均一化するためのシリンジポンプとしては、米国のｋｄＳｃｉｅｎｔｉｆｉｃ社のＫＤＳ−１００を用いた。
As a power supply device for electric field spinning, HVU-30P100 manufactured by MEC Co., Ltd. was used.
As the collector used for electric field spinning, a grounded rotary drum collector was used. The rotary drum collector was covered with a commercially available cooking sheet, and electrospinning was performed on the rotating drum collector.
As the capillary tip, Toho Co., Ltd.'s Tref Chip Tip 8700 was used.
As a syringe pump for equalizing the discharge amount of the spinning solution, KDS-100 manufactured by kdScientific of the United States was used.
走査型電子顕微鏡（ＳＥＭ）としては、日本電子株式会社のＪＳＭ−６０１０ＬＡを用いた。
繊維径を算出するための画像分析ソフトとしては、Ｉｍａｇｅ Ｊ（ｖ．１．４．８)を用いた。
As a scanning electron microscope (SEM), JSM-6010LA manufactured by JEOL Ltd. was used.
Image J (v.1.4.8) was used as the image analysis software for calculating the fiber diameter.
２．実験例１に係るナノ繊維の製造方法
次に、実験例１に係るナノ繊維の製造方法について説明する。
実験例１に係るナノ繊維の製造方法は、実施形態に係るナノ繊維の製造方法と基本的に同様であり、紡糸溶液作製工程と電界紡糸工程とをこの順序で含む。
2. 2. Method for Producing Nanofibers According to Experimental Example 1 Next, a method for producing nanofibers according to Experimental Example 1 will be described.
The method for producing nanofibers according to Experimental Example 1 is basically the same as the method for producing nanofibers according to the embodiment, and includes a spinning solution preparation step and an electric field spinning step in this order.
（１）紡糸溶液作成工程
まず、３．３ｇのエタノールに２．７ｇのシェラックを加えて１日攪拌し、紡糸溶液を作製した。紡糸溶液中のシェラックの割合は、４５ｗｔ％であった。
(1) Spinning Solution Preparation Step First, 2.7 g of shellac was added to 3.3 g of ethanol and stirred for 1 day to prepare a spinning solution. The proportion of shellac in the spinning solution was 45 wt%.
（２）電界紡糸工程
電界紡糸工程で用いた電界紡糸装置は、図２に示した電界紡糸装置とほぼ同様の装置であるが、コレクターとして、クッキングシートで覆った回転型ドラムコレクターを用いた。
電界紡糸工程は、キャピラリーチップを取り付けた５ｍＬプラスチックシリンジに紡糸溶液を注入し、アノードと接続した銅線を溶液内に差し込み、電界紡糸を行うことで実施した。流量の制御にはポンプを用い、０．１ｍＬ／分の割合で溶液供給を行うようにした。チップ−コレクター間の距離は１５ｃｍとし、印加電圧は１０ｋＶとした。電界紡糸は室温（２２℃）、湿度４６％の条件下で行った。
(2) Electric field spinning process The electric field spinning device used in the electric field spinning process is almost the same as the electric field spinning device shown in FIG. 2, but a rotary drum collector covered with a cooking sheet was used as a collector.
The electric field spinning step was carried out by injecting a spinning solution into a 5 mL plastic syringe equipped with a capillary tip, inserting a copper wire connected to an anode into the solution, and performing electric field spinning. A pump was used to control the flow rate, and the solution was supplied at a rate of 0.1 mL / min. The distance between the chip and the collector was 15 cm, and the applied voltage was 10 kV. Electric field spinning was performed under the conditions of room temperature (22 ° C.) and humidity of 46%.
以上の工程により、実験例１に係るナノ繊維を製造した。 Through the above steps, the nanofibers according to Experimental Example 1 were produced.
３．観察結果
実験例１に係るナノ繊維にについて、ＳＥＭによる観察を行った。
図４は、実験例１に係るナノ繊維のＳＥＭ画像である。
図５は、実験例１に係るナノ繊維の繊維径の分布を示すグラフである。図５のグラフの縦軸は頻度（単位：％）を示し、横軸は繊維径（単位：ｎｍ）を示す。
3. 3. Observation Results The nanofibers according to Experimental Example 1 were observed by SEM.
FIG. 4 is an SEM image of the nanofiber according to Experimental Example 1.
FIG. 5 is a graph showing the distribution of fiber diameters of the nanofibers according to Experimental Example 1. The vertical axis of the graph of FIG. 5 indicates the frequency (unit:%), and the horizontal axis indicates the fiber diameter (unit: nm).
ＳＥＭによる観察の結果、図４に示すように、実験例１に係るナノ繊維は、表面が滑らかであり、ビーズ状の構造も見られなかった。
また、当該ＳＥＭ画像から無作為に５０本のナノ繊維を選出し、実験例１に係るナノ繊維の繊維径の分布を調べたところ、図５に示すように、５００ｎｍ程度のナノ繊維が最も多かったものの、５００ｎｍよりも太いナノ繊維も多く、平均繊維径が７２９ｎｍであることが確認できた。
As a result of observation by SEM, as shown in FIG. 4, the nanofibers according to Experimental Example 1 had a smooth surface and no bead-like structure was observed.
In addition, 50 nanofibers were randomly selected from the SEM image, and the distribution of the fiber diameters of the nanofibers according to Experimental Example 1 was examined. As shown in FIG. 5, nanofibers having a diameter of about 500 nm were the most common. However, it was confirmed that there were many nanofibers thicker than 500 nm and the average fiber diameter was 729 nm.
［実験例２］
実験例２においては、ビタミン類としてビタミンＣを含有する本発明のナノ繊維を実際に製造し、その形態を確認した。
[Experimental Example 2]
In Experimental Example 2, the nanofibers of the present invention containing vitamin C as vitamins were actually produced and their morphology was confirmed.
１．実験例２で用いた原料等及び装置
実験例１と同様であるため、記載を省略する。
1. 1. Raw materials and equipment used in Experimental Example 2 Since this is the same as in Experimental Example 1, the description is omitted.
２．実験例２に係るナノ繊維の製造方法
次に、実験例２に係るナノ繊維の製造方法について説明する。
実験例２に係るナノ繊維の製造方法は、紡糸溶液作成工程で作成する紡糸溶液の組成以外は、実験例１に係るナノ繊維の製造方法と同様である。このため、紡糸溶液の組成以外については、記載を省略する。
2. 2. Method for Producing Nanofibers According to Experimental Example 2 Next, a method for producing nanofibers according to Experimental Example 2 will be described.
The method for producing nanofibers according to Experimental Example 2 is the same as the method for producing nanofibers according to Experimental Example 1 except for the composition of the spinning solution prepared in the spinning solution preparation step. Therefore, the description is omitted except for the composition of the spinning solution.
紡糸溶液作成工程では、５ｇのエタノールに４ｇのシェラック及び１ｇのビタミンＣ（Ｌ−アスコルビン酸）を加えて紡糸溶液を作製した。紡糸溶液中のシェラックの割合は４０ｗｔ％、ビタミンＣの割合は１０ｗｔ％であった。紡糸溶液作成工程では、２４時間の撹拌により、均一な紡糸溶液を得ることができた。 In the spinning solution preparation step, 4 g of shellac and 1 g of vitamin C (L-ascorbic acid) were added to 5 g of ethanol to prepare a spinning solution. The proportion of shellac in the spinning solution was 40 wt% and the proportion of vitamin C was 10 wt%. In the spinning solution preparation step, a uniform spinning solution could be obtained by stirring for 24 hours.
３．観察結果
実験例２に係るナノ繊維にについて、ＳＥＭによる観察を行った。
図６は、実験例２に係るナノ繊維のＳＥＭ画像である。
図７は、実験例２に係るナノ繊維の繊維径の分布を示すグラフである。図７のグラフの縦軸は頻度（単位：％）を示し、横軸は繊維径（単位：ｎｍ）を示す。
3. 3. Observation Results The nanofibers according to Experimental Example 2 were observed by SEM.
FIG. 6 is an SEM image of the nanofiber according to Experimental Example 2.
FIG. 7 is a graph showing the distribution of fiber diameters of the nanofibers according to Experimental Example 2. The vertical axis of the graph of FIG. 7 shows the frequency (unit:%), and the horizontal axis shows the fiber diameter (unit: nm).
ＳＥＭによる観察の結果、図８に示すように、実験例２に係るナノ繊維も、表面が滑らかであり、ビーズ状の構造も見られなかった。
また、当該ＳＥＭ画像から無作為に１００本のナノ繊維を選出し、繊維径の分布を調べたところ、図７に示すように、４００ｎｍ程度のナノ繊維が最も多く、平均繊維径が４４２ｎｍであることが確認できた。
As a result of observation by SEM, as shown in FIG. 8, the nanofibers according to Experimental Example 2 also had a smooth surface and no bead-like structure was observed.
In addition, 100 nanofibers were randomly selected from the SEM image and the distribution of fiber diameters was examined. As shown in FIG. 7, nanofibers having a diameter of about 400 nm were the most common, and the average fiber diameter was 442 nm. I was able to confirm that.
以上の実験例１及び実験例２により、本発明のナノ繊維の製造方法により本発明のナノ繊維を製造可能であることが確認できた。また、本発明のナノ繊維の製造方法により、繊維材料以外の物質（ビタミンＣ）を含有する本発明のナノ繊維を問題なく製造可能であることも確認できた。 From the above Experimental Examples 1 and 2, it was confirmed that the nanofibers of the present invention can be produced by the method for producing nanofibers of the present invention. It was also confirmed that the nanofibers of the present invention containing a substance (vitamin C) other than the fiber material can be produced without any problem by the method for producing nanofibers of the present invention.
以上、本発明のナノ繊維、当該ナノ繊維の製造方法及びマスクを、実施形態及び実験例に基づいて説明したが、本発明はこれに限定されるものではなく、その要旨を逸脱しない範囲において実施することが可能であり、例えば、次のような変形も可能である。 The nanofibers of the present invention, the method for producing the nanofibers, and the mask have been described above based on the embodiments and experimental examples, but the present invention is not limited thereto, and the present invention is carried out without departing from the gist thereof. For example, the following modifications are also possible.
（１）本発明のナノ繊維は、マスク以外の繊維素材や繊維製品に適用することも可能である。このような繊維素材や繊維製品としては、各種衣服、ハンカチ、帽子、手袋、敷布等を挙げることができる。 (1) The nanofibers of the present invention can also be applied to fiber materials and textile products other than masks. Examples of such textile materials and textile products include various clothes, handkerchiefs, hats, gloves, and mattresses.
１…原料溶液、２…不織布、１０…マスク、２０…被覆体、３０…紐、４０…複合体、５０，６０…帯状不織布、５２，６２…熱圧着部、１００…ナノ繊維製造装置、１０２…溶液タンク、１０４…バルブ、１０６…ノズル、１０８…コレクター、１１０…電源装置 1 ... Raw material solution, 2 ... Non-woven fabric, 10 ... Mask, 20 ... Cover, 30 ... String, 40 ... Composite, 50, 60 ... Non-woven fabric, 52, 62 ... Thermocompression bonding part, 100 ... Nanofiber manufacturing equipment, 102 … Solution tank, 104… valve, 106… nozzle, 108… collector, 110… power supply
Claims (8)
少なくともビタミンＣを含有することを特徴とするナノ繊維。 In the nanofiber according to claim 1 ,
Nanofibers characterized by containing at least vitamin C.
前記紡糸溶液を用いて電界紡糸を実施する電界紡糸工程とをこの順序で含み、
前記紡糸溶液作製工程では、前記紡糸溶液にビタミン類を添加することを特徴とするナノ繊維の製造方法。 A spinning solution preparation process in which shellac is dissolved in a spinning solvent to prepare a spinning solution,
Look including the electrospinning step of performing electrospinning by using the spinning solution in this order,
A method for producing nanofibers , which comprises adding vitamins to the spinning solution in the spinning solution manufacturing step .
前記紡糸溶媒は、エタノールであることを特徴とするナノ繊維の製造方法。 In the method for producing nanofibers according to claim 3 ,
A method for producing nanofibers, wherein the spinning solvent is ethanol.
前記紡糸溶液作製工程では、前記紡糸溶液に少なくともビタミンＣを添加することを特徴とするナノ繊維の製造方法。 In the method for producing nanofibers according to claim 3 or 4 .
The spinning the solution preparation step, the manufacturing method of the nano fiber characterized by adding at least vitamin C in the spinning solution.
前記被覆体は、繊維材料の主成分がシェラックであるナノ繊維を有することを特徴とするマスク。 A covering body covering the nose and mouth and a mounting member arranged on the covering body are provided.
The coating body is a mask characterized by having nanofibers in which the main component of the fiber material is shellac.
前記ナノ繊維は、ビタミン類を含有することを特徴とするマスク。 In the mask according to claim 6 ,
The nanofiber is a mask characterized by containing vitamins.
前記ナノ繊維は、少なくともビタミンＣを含有することを特徴とするマスク。 In the mask according to claim 7 ,
A mask characterized in that the nanofibers contain at least vitamin C.
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