JP5951932B2 - Fiber and method for producing the same - Google Patents

Description

  The present invention relates to a fiber using a plant powder obtained by pulverizing a plant body and a method for producing the same.

A resin molded product that is made by mixing pulverized material obtained by crushing waste by-products such as leaves with a resin molding material from the viewpoint of effectively utilizing waste by-products such as tea leaves generated in local industries and building a resource recycling society. Development is underway.
Specifically, for example, in Patent Document 1, a tea leaf pulverized product obtained by pulverizing tea leaves as waste by-products to an average particle size of 0.5 mm or less is blended in a resin molding material such as an aliphatic polyester-based biodegradable resin, A technique for producing a resin molded product such as a mechanical pencil replacement core case by a molding machine is disclosed. Patent Document 2 discloses a technique for producing a molded product by drying a food residue to a size of 30 microns or less, mixing with a biodegradable resin, and solidifying it. Patent Document 3 discloses a technique for producing a molded product such as a food tray by pulverizing a natural organic matter extraction residue such as tea husk to an average particle size of 300 μm or less and blending it with a binder resin such as high-density polyethylene. ing.
Further, in Patent Document 4, in order to give a resin molded product a function such as fragrance, tea powder having a particle size of 100 μm or less and a moisture content of 5% by weight or less is blended with a synthetic resin such as a polyethylene resin. Obtaining techniques are disclosed.
Patent Document 5 discloses a substance for forming a wood substitute containing a fine powder having a size of up to 5 mm obtained by pulverizing a plant skin and the like and a high molecular weight aliphatic polyester. ing

  On the other hand, as a technique for imparting a function to a fiber, for example, in Patent Document 6, a fiber treatment agent in which a tea powder having an average particle size of 30 μm and a calcium hydroxide hydrate powder are blended in an acrylic emulsion is applied to a polyester base fabric. A technique for obtaining a sheet having a fiber treatment agent layer by laminating and drying is disclosed. Further, Patent Document 7 discloses a fiber material for inner cotton in which microcapsules enclosing plant-derived essential oil are fixed to fibers via a binder resin. Patent Document 8 discloses a composite yarn in which bamboo fibers that generate negative ions and synthetic fibers are mixed. Patent Document 9 discloses a synthetic resin fiber having reversible discoloration obtained by spinning a synthetic resin containing rare earth oxide ultrafine particles having an average particle diameter of 5 to 100 nm. Further, Patent Document 10 discloses black colored short fibers that are superior in properties that bring out the effects of cosmetics by blending carbon black having specific properties into a specific amount of fibers.

  In addition, as a method for coloring a polymer organic material, for example, Patent Document 11 discloses stirring that is a non-platelet pigment having an average particle size of 0.5 to 25 μm in a suspension or solution of a polymer organic material. A method has been disclosed which comprises a step of uniformly dispersing an effective coloring amount of a stir-in pigment in a polymer organic material by stirring the stir-in pigment.

JP 2001-226492 A JP 2000-141396 A Japanese Patent Laid-Open No. 2000-281917 JP 2003-155353 A JP-T-2004-503415 International Publication No. 2004/089092 Pamphlet JP 2004-244756 A JP 2004-44059 A JP 2000-144520 A JP 2007-39861 A JP-A-8-198973

Compared to the case where a resin molded product is obtained by mixing solids such as plant powder or pigment into a resin such as a synthetic resin as described above, when producing fibers in which the solids are kneaded into the resin, spinning is performed. There is a concern that the strength of the obtained fiber is lowered.
In particular, when a fiber is produced by kneading a plant powder obtained by pulverizing a plant body and a pigment powder into a fiber material resin in order to color the fiber to a target color, an amount corresponding to the target color is used. It was necessary to knead plant powder and pigment powder, and it was difficult to achieve both coloring and strength.
Therefore, an object of the present invention is to provide a method for producing a fiber from which a fiber having a practically sufficient strength can be obtained even when the target coloring is performed. A still further object of the present invention, coloration and purpose is made, and is to provide a practically sufficient strength was maintained fibers.

The above problem is solved by the following means. That is,
The invention according to claim 1
Mixed powder made a tone and a volume average particle diameter 0.001μm or more 1.2μm following plant powder and a volume average particle diameter 1.2μm or less of the pigment powder and starch least 0.001μm obtained by grinding the plant And a process of
It was added to the mixed powder to the molten fiber material resin, a step of, prepare fiber-forming composition comprising the mixed powder and the fibrous material resin,
Injecting the fiber-forming composition from an injection port to form fibers;
It is a manufacturing method of the fiber which has.

The invention according to claim 2
Mixed powder made a tone and a volume average particle diameter 0.001μm or more 1.2μm following plant powder and a volume average particle diameter 1.2μm or less of the pigment powder and starch least 0.001μm obtained by grinding the plant And a process of
Part of the fiber material resin is melted, and the mixed powder is added to the melted part of the fiber material resin and molded to form a processing mixture molding including the part of the fiber material resin and the mixed powder. And a process of
It said to melt the remainder of the fiber resin material, a step of adding the treatment mixture molded to the remainder of the molten said fibrous material resin is manufactured by adjusting the fiber-forming composition comprising the mixed powder and fiber material resin ,
Injecting the fiber-forming composition from an injection port to form fibers;
It is a manufacturing method of the fiber which has.

The invention according to claim 3
A mixed powder containing a plant powder having a volume average particle size of 0.001 μm or more and 1.2 μm or less, a pigment powder having a volume average particle size of 0.001 μm or more and 1.2 μm or less, and starch obtained by pulverizing a plant is melted. The mixture formed for processing obtained by adding and molding to a part of the fiber material resin was added to the remaining part of the molten fiber material resin to form a fiber containing the mixed powder and the fiber material resin. a step of manufactured of the use composition adjustment,
Injecting the fiber-forming composition from an injection port to form fibers;
It is a manufacturing method of the fiber which has.

The invention according to claim 4
The fiber production according to any one of claims 1 to 3, wherein an amount of the mixed powder added is 4.0% by mass or more and 15.1% by mass or less with respect to the fiber-forming composition. Is the method.

The invention according to claim 5
It is a manufacturing method of the fiber of any one of Claims 1-4 whose said plant body is a plant waste.

The invention according to claim 6
A fiber material resin, and a mixed powder dispersed in the fiber material resin,
The mixed powder includes a plant powder having a volume average particle size of 0.001 μm to 1.2 μm obtained by pulverizing a plant, a pigment powder having a volume average particle size of 0.001 μm to 1.2 μm, starch, Including,
It is a fiber whose content of the said mixed powder is 4.0 to 15.1 mass% with respect to the whole fiber.

The invention according to claim 7 provides:
The fiber according to claim 6 , wherein the plant body is a plant waste.

According to the present invention, fibers having high strength even if the coloring of the object can be obtained, fibers having both a manufacturing method及beauty onset color and strength of the fiber is provided.

It is the schematic diagram which showed an example of the manufacturing apparatus used for the manufacturing method of the fiber in this invention. It is the schematic diagram which showed another example of the manufacturing apparatus used for the manufacturing method of the fiber in this invention.

Hereinafter, the present invention will be described in detail.
[Fiber manufacturing method]
In the first fiber production method of the present invention, a plant powder having a volume average particle size of 0.001 μm to 1.2 μm obtained by pulverizing a plant and a volume average particle size of 0.001 μm to 1.2 μm are obtained. A step of adjusting a mixed powder containing pigment powder and polysaccharide (hereinafter sometimes referred to as “mixed powder adjusting step”); and adding the mixed powder to a molten fiber material resin; A step of preparing a fiber-forming composition containing a material resin (hereinafter sometimes referred to as a “mixed powder addition step”), and a step of injecting the fiber-forming composition from an injection port to form fibers (hereinafter referred to as “mixed powder addition step”) , Which may be referred to as an “injection step”), and a method for producing fibers using starch as the polysaccharide .
That is, in the first fiber manufacturing method, plant powder, pigment powder, and starch , which is a polysaccharide , are mixed in advance to prepare a mixed powder, and the mixed powder is added to the molten fiber material resin before injection. The fiber is manufactured.

Moreover, the manufacturing method of the 2nd fiber in this invention is a plant powder with the volume average particle diameter of 0.001 micrometer or more and 1.2 micrometers or less obtained by grind | pulverizing a plant, and a volume average particle diameter of 0.001 micrometer or more and 1.2 micrometers or less. Add the mixed powder containing the pigment powder and the polysaccharide to a part of the melted fiber material resin and mold the mixture, and add the molded mixture for treatment obtained to the remaining part of the melted fiber material resin. A step of preparing a fiber-forming composition containing the mixed powder and the fiber material resin (hereinafter sometimes referred to as a “processing mixture molding addition step”), and the fiber-forming composition from the injection port A method for producing fibers using starch as the polysaccharide, which is one of the preferred embodiments of the method for producing fibers having a step of forming fibers by injection (i.e., the injection step).
That is, in the second method for producing a fiber, a processing mixture molded product obtained by adding a plant powder, a pigment powder, and a mixed powder containing starch , which is a polysaccharide , to a part of a molten fiber material resin and molding the mixture. Is added to the remainder of the melted fiber material resin and then injected to produce a fiber.

And the method of manufacturing the said processing mixture molding used with the manufacturing method of the 2nd fiber in this invention is the plant powder of the volume average particle diameter of 0.001 micrometer or more and 1.2 micrometers or less obtained by grind | pulverizing a plant body. A step of adjusting a mixed powder containing a pigment powder having a volume average particle size of 0.001 μm or more and 1.2 μm or less and starch that is a polysaccharide (that is, the mixed powder adjustment step); The mixed powder is added to a part of the melted fiber material resin and molded to form a processing mixture molded body containing a part of the fiber material resin and the mixed powder (hereinafter referred to as “processing mixture molded body”). It may be referred to as an “adjustment step”.

By using the method for producing a fiber according to the present invention, a fiber having a practically sufficient strength can be obtained even if a color having a target hue and density is colored. That is, when producing a fiber by kneading and injecting a solid powder into a fiber material resin, as the solid powder, a plant powder having a particle size in the above range, a pigment powder having a particle size in the above range, and By using the mixed powder containing starch , which is a polysaccharide , fibers having a desired hue and concentration and having high strength can be obtained. The reason is not clear, but is presumed as follows.

  Fibers obtained by kneading plant powder and pigment powder obtained by pulverizing plant bodies into fiber material resin are different from fibers kneaded only with pigment powder, and are colored in unique colors. It becomes. However, it is conceivable that when plant powder and pigment powder are kneaded into the fibers in order to obtain fibers colored in a unique color as described above, the strength of the fibers becomes weak. In particular, when coloring a fiber by kneading plant powder and pigment powder into the fiber, in order to color the same dark color as compared with the case where only the pigment powder is kneaded into the fiber, more Since it is necessary to use powder (plant powder and pigment powder), it is considered that it becomes more difficult to maintain the strength of the fiber.

In contrast, in the present invention, the strength of the fiber is maintained by using the plant powder having the particle size in the above range, the pigment powder having the particle size in the above range, and the mixed powder containing the polysaccharide.
Specifically, by using the plant powder and the pigment powder having a small particle size as described above, the fiber material resin network contained in the fiber is compared with the case where the powder having a large particle size is used. It is considered that the mechanical strength of the fiber due to the presence of the powder is reduced, and the strength of the fiber is maintained.

  On the other hand, the plant powder obtained by crushing the plant body is lighter than the pigment powder and the fiber material resin because the moisture contained in the cells of the plant body is lost and becomes porous. it is conceivable that. The difference between the specific gravity of the plant powder and the specific gravity of the pigment powder is very large, making it difficult to mix the plant powder and the pigment powder, and the difference between the specific gravity of the plant powder and the specific gravity of the fiber material resin is also very large. It is thought that plant powder becomes difficult to disperse | distribute in fiber material resin by being large.

  However, in the present invention, it is considered that the polysaccharide contained in the mixed powder adheres to the plant powder, thereby reducing the difference in specific gravity with respect to the pigment powder and facilitating the uniform mixing of the plant powder and the pigment powder. In addition to the fact that the difference in specific gravity with respect to the fiber material resin is small compared to the plant powder alone, the plant powder to which the polysaccharide has adhered is mixed with the fiber material resin because of its high chemical affinity. It is considered that the entire powder easily enters the fiber material resin. Therefore, plant powders and pigment powders with small particle diameters are easily dispersed uniformly in the fiber material resin without agglomeration, and even when natural components such as plant powders are used, practically sufficient strength is maintained. It is presumed that fibers are easily obtained.

  As described above, in the present invention, a plant powder or pigment powder having a large particle size is obtained by using a mixed powder containing a plant powder having a particle size in the above range, a pigment powder having a particle size in the above range, and a polysaccharide. Compared with the case where it is used or not using any of plant powder, pigment powder, and polysaccharide, there is a fiber that is colored in a color having a target hue and concentration and that has a practically sufficient strength. Presumed to be obtained.

In the present invention, it is desirable that the amount of the mixed powder added is 4.0% by mass or more and 15.1% by mass or less of the entire fiber-forming composition. When the addition amount of the mixed powder is in the above range, the fiber is easily colored to the target color as compared with the case where the amount is less than the above range. And in this invention, as above-mentioned, the intensity | strength of a fiber is maintained even if it makes the addition amount of the said mixed powder the said range.
Moreover, when the addition amount of the mixed powder is within the above range, a fiber having higher strength than that obtained when the amount is larger than the above range can be obtained.
The amount of the mixed powder added is more preferably 5.0% by mass or more and 15.1% by mass or less, and 7.0% by mass or more and 15.1% by mass from the viewpoint of achieving both coloring and strength of the fiber. It is further desirable that

  In the present invention, as described above, a mixed powder containing a plant powder, a pigment powder, and a polysaccharide is prepared in advance, and then the mixed powder is added to the fiber material resin. It can be dispersed inside the fiber material resin without agglomeration. Therefore, in this invention, even if it does not perform stirring etc. after adding mixed powder to fiber material resin, plant powder and pigment powder can be kneaded inside fiber material resin. Therefore, for example, the mixed powder may be added while flowing the molten fiber material resin to continuously produce the fibers.

  In the present invention, as described above, the plant powder and the pigment powder can be easily kneaded into the fiber material resin without performing an operation such as stirring. Therefore, for example, by adding the mixed powder to the fiber material resin after being discharged from the storage part, not the fiber material resin in the storage part, compared to the case of stirring the fiber material resin and the mixed powder in the storage part, Contamination of the reservoir is suppressed by plant powder, pigment powder, and the like contained in the mixed powder. And thereby, after manufacturing the fiber, even when manufacturing fiber using other plant powder or pigment powder, fiber not using plant powder, etc., contamination in the reservoir due to plant powder and pigment powder is suppressed. Thus, the process of cleaning the inside of the storage part becomes unnecessary.

Furthermore, in this invention, since the polysaccharide exists in the inside of fiber material resin, the biodegradable fiber in which biodegradation is performed after fiber disposal is obtained.
Hereinafter, the manufacturing method of the fiber in this invention is demonstrated in detail.

[First fiber manufacturing method]
First, the manufacturing method of a 1st fiber is demonstrated. As described above, the first fiber manufacturing method includes at least a mixed powder adjustment step, a mixed powder addition step, and an injection step.

<Mixed powder adjustment process>
In the mixed powder adjusting step, as described above, a plant powder having a volume average particle size of 0.001 μm to 1.2 μm and a pigment powder having a volume average particle size of 0.001 μm to 1.2 μm obtained by pulverizing a plant body. And preparing a mixed powder containing polysaccharides.

-Plant powder-
The plant powder is a powder obtained by pulverizing a plant body. Examples of the plant body include leaves, stems, bark, roots, flowers, fruits, or seeds of plants, and are not particularly limited as long as they are plants themselves. The plant includes a marine plant and a land plant.
Examples of the plant powder include soybean powder, sweet potato, potato, sugar radish, konjac, powder of food such as coffee and tea, and powder obtained by pulverizing the following plant waste.
Examples of plant waste include waste such as cereal rice straw, rice husk, or peanut hulls, waste such as vegetable selection exclusion or non-standard products, horticultural shipment exclusion or non-standard products, etc. Waste, thinning trees related to forestry, or selected items. Examples of the plant waste include beverages such as coffee, tea and juice, seasonings such as soy sauce, residues such as processed foods, and food residues discharged from restaurants such as restaurants.

The origin of the plant waste used for the plant powder is not particularly limited, and other than the above plant waste may be used. Specific examples of plant waste include building material waste, fiber waste, industrial material waste, food waste, waste generated in the leisure industry, and the like.
Examples of the building waste include those that are caused by demolition of public buildings and private buildings, and pieces of wood (such as pillars). Examples of the textile waste include those that are discarded by the textile products, such as end fabrics that are generated in the process of manufacturing the textile products (specifically, discarded wooden buttons, discarded wooden fasteners). Top, wooden cloth (for example, cloth made of thinly cut wood), and the like. Examples of the industrial material waste include a wooden (for example, cork) interior material, a naturally-derived raw material waste generated in the cosmetic industry, and the like. Examples of food waste include tofu residue, red bean juice, tea husk, dashi pomace, juice residue (squeezed pomace obtained by squeezing juice from fruits), etc. And so on. Examples of the waste generated in the leisure industry include crushed wooden ships, exercise equipment such as decks and hulls, wooden bats, and the like.

  Examples of plant powders used for fiber coloring include indole derivatives (blue), carotenoids (carotenoids) (orange), diketones (yellow), isohinoline derivatives (yellow), anthocyanins or anthocyanes (red), chlorophylls (chlorophyll) ) (Green), chalcone derivative (yellow), flavonoid (yellow), tannin (brown), naphthoquinone (purple), dihydropyran (black), anthraquinone derivative (red) The obtained plant powder is mentioned.

  When the fiber is colored only with pigments or dyes, the frequency distribution of reflected light in the pigments and dyes is narrow, and in some cases reflects light of a single frequency, so the impression given to the viewer of the reflected light is " It tends to be “artificial, clear colors”. On the other hand, since the frequency distribution of reflected light in plant powder is wide, coloring with plant powder causes the reflected light to be distributed over a wide range of frequencies, and the impression given to the viewer of the reflected light tends to be “a softly colored tone” . And by using together the said pigment or dye and plant powder, the color tone which softened the clear color tone which a pigment and dye have can be expressed.

  The volume average particle size of the plant powder is 0.001 μm or more and 1.2 μm or less as described above, and preferably 0.001 μm or more and 1 μm or less from the viewpoint of maintaining the mechanical strength of the obtained fiber. More preferably, it is 0.6 μm or less. Moreover, you may use together the multiple types of plant powder from which a volume average particle diameter differs.

  The volume average particle size of the plant powder is preferably 1/3 times or less, more preferably 1/5 times or less the diameter of the fiber to be produced, from the viewpoint of maintaining the mechanical strength of the obtained fiber. Preferably, the smaller the better. For example, when producing a fiber having a diameter corresponding to 1 denier of 3.2 μm, the volume average particle diameter of the plant powder to be blended may be 0.3 μm, for example.

  The volume average particle size is measured by using a laser diffraction / scattering particle size distribution measuring device (manufactured by Hosokawa Micron Corporation, product name: laser type online particle size distribution measuring device INSITEC) as a measuring device. Then, in the obtained particle size distribution, a cumulative distribution is drawn from the small diameter side with respect to the volume of each particle, and the particle size at which 50% is accumulated is defined as the volume average particle size.

  It is desirable that the plant powder has a volume average particle size in the above range and no particles exceeding 1.2 μm are present. That is, it is desirable that the plant powder has a particle size of 1.2 μm or less.

The addition amount of the plant powder is preferably in the range of 15% by mass or less from the viewpoint of maintaining the strength of the fiber with respect to the entire fiber forming composition. To 3 mass% or more and 7 mass% or less is preferable.
Further, the addition ratio of the plant powder and the pigment powder is desirably 0.05 parts by mass or more and 1.1 parts by mass or less of the pigment powder with respect to 1 part by mass of the plant powder from the viewpoint of coexistence of coloring and strength of the fiber. The optimum addition amount ratio varies depending on the target color. The addition amount of the pigment powder with respect to 1 part by mass of the plant powder is preferably 0.05 parts by mass or more and 0.15 parts by mass when expressing a light color, and 0.5 parts by mass or more and 0.6 parts by mass when expressing an intermediate color. The following is desirable, and when expressing a dark color, the amount is preferably 1 part by mass or more and 1.1 parts by mass or less.

  Examples of the method for producing plant powder include a method for producing plant powder by pulverizing a plant body with a pulverizer such as a mill. Specific examples of the pulverization method include a continuous milling method and a pulverization method using a stone mortar. Prior to pulverization by the mill or the like, the plant body may be freeze-dried by a technique such as freeze drying and then pulverized. Further, after pulverization, drying may be performed using a microwave oven or a heat heater.

From the viewpoint of not reducing the mechanical strength of the obtained fiber, the plant powder is preferably used in a dry state. Specifically, the dry state is, for example, a ratio of moisture contained in the plant powder, that is, a ratio of the mass of moisture to the total mass of the powder (hereinafter sometimes referred to as “moisture content”) of 4 mass% or less. (That is, an absolutely dry state).
The method for measuring the moisture content is determined from the mass ratio before and after drying using an absolute drying measurement dryer.

-Pigment powder-
Examples of the pigment powder include synthetic organic pigments (pigments having a chemical structure), metal-containing inorganic pigments, natural inorganic pigments (natural rock paint materials, etc.), carbon-containing pigments, lake pigments, and the like.
Examples of synthetic organic pigments include phthalocyanine pigments, anthraquinone pigments, quinacridone pigments, fluorocarbon pigments, and the like.

Examples of the metal-containing inorganic pigment include titanium dioxide, zinc oxide, iron oxide, chromium oxide, cobalt aluminate, and the like.
Examples of the natural inorganic pigments, for example, apatite ore powder, crystal powder, Azurite powder, monazite stone powder body (common name: Reazu ore powder), black tourmaline ore powder, brick powder, jewelry powder, peacock Stone powder etc. are mentioned.
Examples of the carbon-containing pigment include carbon black.

  Examples of lake pigments include anthraquinone lake pigments.

  As described above, the volume average particle diameter of the pigment powder is 0.001 μm or more and 1.2 μm or less, and more preferably 0.001 μm or more and 0.6 μm or less from the viewpoint of maintaining the mechanical strength of the obtained fiber. A plurality of types of pigment powders having different volume average particle diameters may be used in combination. Examples of the method of setting the volume average particle size of the pigment powder in the above range include a method of pulverizing using a mill or the like, as in the case of the plant powder.

The volume average particle diameter of the pigment powder is preferably 1/3 times or less, more preferably 1/5 times or less the diameter of the fiber to be produced, from the viewpoint of maintaining the mechanical strength of the obtained fiber. Preferably, the smaller the better. For example, when a fiber having a diameter corresponding to 1 denier of 3.2 μm is produced, the volume average particle diameter of the pigment powder to be blended may be, for example, 0.3 μm.
The method for measuring the volume average particle size is the same as the method for measuring the volume average particle size in the plant powder.

  It is desirable that the pigment powder has a volume average particle diameter in the above range and no particles exceeding 1.2 μm are present. That is, it is desirable that the particle diameters of the pigment powders are all distributed to 1.2 μm or less.

  The addition amount of the pigment powder is preferably 7.5% or less of the fiber mass with respect to the entire fiber forming composition from the viewpoint of coloring effect, and is 0 from the viewpoint of coexistence of coloring effect and maintenance of fiber mechanical strength. The range of 0.5 mass% or more and 7.5 mass% or less is preferable.

-Polysaccharides-
Examples of the polysaccharide include starch, cellulose, dextrin, cyclodextrin, chitin, chitosan, oligosaccharide and the like, and two or more of these may be used in combination.
Examples of the starch include corn starch, sugar beet starch, and kombu starch. Plant starch that has been mass-produced like these may be used.

The polysaccharide is preferably used in a powder state. The polysaccharide powder is not limited to a single powder of polysaccharides as long as it contains polysaccharides. For example, it is a powder containing components other than polysaccharides such as powder of crustacean waste containing chitin and chitosan. Also good.
The volume average particle diameter of the polysaccharide is not particularly limited, and examples thereof include a range of 0.001 μm to 1.2 μm. From the viewpoint of maintaining the mechanical strength of the obtained fiber, 0.6 μm or less is preferable. Examples of the method for setting the volume average particle size of the polysaccharide in the above range include a method of crushing using a mill or the like, as in the case of the plant powder.
Further, it is desirable that the polysaccharide has a volume average particle size in the above range and no particles exceeding 1.2 μm are present. That is, it is desirable that the polysaccharides have a particle size of 1.2 μm or less.
Further, the addition amount of the polysaccharide is preferably in the range of 0.5% by mass or more and 6% by mass or less of the entire mixed powder from the viewpoint of sufficiently dispersing the input material. The specific gravity of the polysaccharide is, for example, 1 or less.

  The mass ratio of the polysaccharide to be used is not particularly limited, but from the viewpoint of sufficiently dispersing the input material and maintaining the strength of the fiber, the amount of polysaccharide added relative to the total of the amount of plant powder added and the amount of pigment powder added For example, the ratio is more preferably 0.005 parts by mass or more and 0.03 parts by mass or less with respect to a total of 1 part by mass of the plant powder and the pigment powder.

-Other powders-
The mixed powder may contain other powders.
Examples of other powders include dye powder and other additives. The other powders may be used by mixing with the mixed powder, or may be added to the fiber material resin separately from the mixed powder.
Examples of the dye include disperse dyes, reactive dyes, direct dyes, acid dyes, and selenium dyes.
Examples of other additives include protein powder, cocoon powder containing sericin, feather powder, dry microorganism powder, soil powder, metal powder, and the like.
The volume average particle size of other powders is preferably 0.05 μm or more and 1 μm or less from the viewpoint of maintaining the mechanical strength of the obtained fiber.

-Preparation of mixed powder-
The mixed powder is obtained by mixing the above powder. There is no restriction | limiting in particular as the mixing method of the said powder, For example, the method etc. which put a pigment, a vegetable powder, and a polysaccharide in a plastic bag, and shake well, etc. are mentioned.
The mixed powder is preferably in an absolutely dry state from the viewpoint of not reducing the mechanical strength of the obtained fiber. As a moisture content rate of mixed powder, 4 mass% or less is mentioned, for example.
The volume average particle diameters of the powders used for the mixed powder may be different from each other, and powders having the same material type and different volume average particle diameters may be used in combination.

<Mixed powder addition process>
In the mixed powder addition step, as described above, the mixed powder is added to the molten fiber material resin to prepare a fiber-forming composition containing the mixed powder and the fiber material resin.

-Fiber material resin-
Examples of the fiber material resin include synthetic resins, and specific examples include polyester, nylon 6, nylon 66, acetate, triacetate, acrylic, polypropylene, polyurethane, polyvinylidene chloride, vinylon, and the like.

  The mixed powder is added to the molten fiber material resin as described above. The temperature of the melted fiber material resin is not particularly limited as long as the fiber material resin is melted.

<Injection process>
In the injection step, as described above, the fiber forming composition adjusted in the mixed powder addition step is injected from the injection port to form fibers.
The shape of the injection port is not particularly limited, and is selected according to the shape of the fiber to be manufactured. The diameter of the injection port (in the case of a shape other than a circle, the diameter of the circle obtained by converting the area into a circle) is a diameter corresponding to the thickness of the fiber to be manufactured, specifically, For example, the range of 1.0 micrometer or more and 70 micrometers or less is mentioned.

In the injection step, for example, the fiber-forming composition may be discharged into water through the injection port. As a result, the fiber-forming composition discharged from the injection port is cooled and solidified by water to obtain fibers. The cooling is not limited to a method of discharging the fiber forming composition into water, for example, a method of cooling the fiber forming composition discharged through the injection port by applying a cooling liquid or gas. Also good.
In the injection step, the fiber-forming composition discharged from the injection port may be subjected to a step of being wound by a winder after being cooled to become a fiber.

<Fiber manufacturing equipment>
FIG. 1 is a schematic diagram showing an example of a fiber manufacturing apparatus used in the fiber manufacturing method of the present invention. The manufacturing apparatus of FIG. 1 is a form provided with the mixing part which mixes fiber material resin and mixed powder.

  The manufacturing apparatus 10 shown in FIG. 1 introduces, for example, a storage unit 12 that stores fiber material resin, an introduction unit 14 that introduces fiber material resin into the storage unit 12, and fiber material resin from the storage unit 12 to the mixing unit 22. Obtained by mixing the fiber material resin and the mixed powder in the mixing unit 22, the mixing unit 22 for mixing the fiber material resin and the mixed powder, the hopper 18 for adding the mixed powder to the mixing unit 22, and the mixing unit 22. A discharge pipe 24 that discharges the produced fiber-forming composition from the mixing section 22 and an injection port 20 that injects the fiber-forming composition from the discharge pipe 24 are configured.

The storage unit 12 includes, for example, a heating device (not shown) that heats the fiber material resin stored in the storage unit 12 and a stirring device (not shown) that stirs the melted fiber material resin. The heating device is not limited to the form provided in the storage unit 12, and may be provided in the introduction pipe 16.
The said heating apparatus is not specifically limited, For example, a heater etc. are mentioned.

The mixing unit 22 includes, for example, a mixing member (not shown) that mixes molten fiber material resin and mixed powder. Examples of the mixing member include a roller and a stirring bar.
The mixing unit 22 includes a pressurizing means (not shown) for applying pressure to the fiber forming composition obtained by mixing the fiber material resin and the mixed powder and injecting it from the injection port 20. Yes.
The shape of the hopper 18 is not particularly limited. For example, a megaphone-like member may be used as the hopper 18.

Further, on the outside of the injection port 20, for example, a cooling means (not shown) for cooling the injected fiber material resin is provided.
The cooling means is not particularly limited, and examples thereof include a cooling device configured so that the fiber material resin injected from the injection port 20 is directly injected into water.

  The fiber manufacturing method using the manufacturing apparatus 10 shown in FIG. 1 includes, for example, a mixed powder adjustment step of adjusting a mixed powder containing plant powder, pigment powder, and polysaccharide in advance, and storing fiber material resin from the introduction unit 14. A melting step in which the fiber material resin introduced into the portion 12 and stored in the storage portion 12 is heated and melted by a heating device (not shown), and the melted fiber material resin is mixed from the storage portion 12 through the introduction pipe 16 The mixture is added to the fiber material resin from the hopper 18 and mixed to mix the fiber material resin and the mixed powder by a mixing member (not shown) of the mixing unit 22 to adjust the fiber forming composition. In the cooling device (not shown) from the injection port 20 through the discharge pipe 24 by applying pressure to the fiber-forming composition in the mixing unit 22 by the powder addition step and the pressurizing means (not shown) provided in the mixing unit 22 In Having, an injection step of leaving.

  The heating in the melting step may be performed so that the temperature of the fiber material resin becomes a target temperature. As described above, the melting step may be performed by heating the fiber material resin in the storage unit 12, but is not limited to the above form as long as the fiber material resin is melted when the mixed powder is added. Specifically, for example, the fiber material resin may be heated in the introduction pipe 16 in addition to the storage unit 12 or in place of the storage unit 12. Further, for example, after the fiber material resin is directly introduced into the introduction pipe 16 from the introduction part 14 without the storage part 12, the fiber material resin is heated while moving inside the introduction pipe 16 to melt the fiber material resin. It may be a form to do.

  In the injection process, the fiber forming composition is not limited to the above-described form as long as the fiber-forming composition is injected from the injection port 20, and may be injected by applying pressure by the pressurizing means of the mixing unit 22 as described above. The form for injecting the composition for fiber formation from the injection port 20 may be used.

  FIG. 2 is a schematic view showing another example of a fiber manufacturing apparatus used in the fiber manufacturing method of the present invention. The manufacturing apparatus of FIG. 2 does not include the mixing unit, and is a mode in which mixed powder is added in the discharge pipe to the fiber material resin discharged from the storage unit.

  The manufacturing apparatus 100 illustrated in FIG. 2 includes, for example, a storage unit 112 that stores the fiber material resin, an introduction unit 114 that introduces the fiber material resin into the storage unit 112, and a discharge pipe 116 that discharges the fiber material resin from the storage unit 112. And a hopper 118 for adding the mixed powder to the fiber material resin passing through the discharge pipe 116, and an injection port 120 for injecting the fiber forming composition obtained by the addition of the mixed powder from the discharge pipe 116. ing.

The storage unit 112, the introduction unit 114, the hopper 118, and the injection port 120 are the same as the storage unit 12, the introduction unit 14, the hopper 18, and the injection port 20 in the manufacturing apparatus 10 shown in FIG. Omitted. Further, the heating means and the cooling means are the same as those of the manufacturing apparatus 10 in FIG.
In the manufacturing apparatus 100 shown in FIG. 2, for example, a pressurizing unit (not shown) is provided in the storage portion 112, and the fiber material resin is discharged from the storage portion 112 to the discharge pipe 116 by the pressure, and the discharge pipe The mixed powder is added in 116 and injected as it is from the injection port 20.

  The fiber manufacturing method using the manufacturing apparatus 100 shown in FIG. 2 includes, for example, a mixed powder adjustment step of adjusting a mixed powder containing plant powder, pigment powder, and polysaccharide in advance, and storing fiber material resin from the introduction unit 114. The fiber material resin introduced into the section 112 and melted by heating and melting the fiber material resin stored in the storage section 112 by a heating device (not shown) and the pressurizing means (not shown) provided in the storage section 112 Addition of mixed powder for discharging the fiber material resin from the storage unit 112 to the discharge pipe 116 and adding the mixed powder from the hopper 118 to the fiber material resin to adjust the fiber forming composition including the fiber material resin and the mixed powder A process and an injection process of injecting the fiber forming composition in the discharge pipe 116 from the injection port 120 into a cooling device (not shown).

  The manufacturing apparatus 10 shown in FIG. 1 and the manufacturing apparatus 100 shown in FIG. 2 described above are systems in which the mixed powder is added to the fiber material resin after being discharged from the storage portion. It will not specifically limit if addition of mixed powder is performed before an injection process. Specifically, for example, the mixed powder may be added to the fiber material resin in the reservoir. However, from the viewpoint of preventing the storage part from being contaminated with plant powder, pigment powder, etc., the addition to the fiber material resin after being discharged from the storage part rather than the addition to the fiber material resin in the storage part. The form to perform is more preferable.

[Method for producing second fiber]
Next, the manufacturing method of a 2nd fiber is demonstrated. As described above, the second fiber manufacturing method includes at least a processing mixture molded body addition step and an injection step. In addition, since it is the same as that of the manufacturing method of the said 1st fiber about an injection process, description is abbreviate | omitted.

<Processing mixture molded body addition step>
In the processing mixture molding addition step, as described above, the processing mixture molding obtained by adding and molding the mixed powder to a part of the molten fiber material resin is used, and the remainder of the molten fiber material resin is added. To prepare a fiber-forming composition containing the mixed powder and the fiber material resin.

-Mixture for processing-
The processing mixture molding is obtained by adding the above-mentioned mixed powder to a part of the molten fiber material resin and molding the mixture.
Since the mixed powder and the fiber material resin are the same as described above, the description thereof is omitted.
Examples of the “part of the fiber material resin” used in the processing mixture molding include, for example, a fiber material resin in a range of 0.4 mass% to 1 mass% with respect to the entire fiber material resin constituting the fiber. Use.

As described above, for example, the mixture mixture for processing is manufactured by melting the part of the fiber material resin and adding the mixed powder to the part of the melted fiber material resin. And a processing mixture molded body adjustment step for forming a processing mixture molded body including a part of the fiber material resin and the mixed powder is performed.
As an apparatus for manufacturing the processing mixture molded body, for example, in the manufacturing apparatus 10 shown in FIG. 1 or the manufacturing apparatus 100 shown in FIG. 2, a part of the fiber resin material is used instead of the injection port 20 or the injection port 120. And an apparatus provided with a molding part for molding a mixture of powder and mixed powder. In the first fiber manufacturing method, a part of the fiber material resin is used instead of the fiber material resin, and instead of injecting the fiber forming composition from the injection port, a part of the fiber material resin and the mixed powder A processing mixture molded body is manufactured by performing the same operation except that the mixture is discharged from the discharge pipe and molded.

In the mixed powder addition step in the first fiber manufacturing method, the remainder of the fiber material resin is used instead of the fiber material resin, and the treatment mixture molded body is used instead of the mixed powder. The same operation is performed except that it is used.
As a manufacturing apparatus used for the manufacturing method of the 2nd fiber, the apparatus similar to the manufacturing apparatus 10 shown in above-mentioned FIG. 1 or the manufacturing apparatus 100 shown in FIG. 2 is mentioned, for example, As mentioned above, a fiber The remainder of the fiber material resin is used in place of the material resin, and the fiber is manufactured using the processing mixture molding in place of the mixed powder.

[fiber]
The fiber of the present invention has a fiber material resin and a mixed powder dispersed in the fiber material resin, and the mixed powder has a volume average particle size of 0.001 μm or more obtained by pulverizing a plant body. .2 μm or less plant powder, volume average particle size 0.001 μm or more and 1.2 μm or less pigment powder, and polysaccharide, and the content of the mixed powder is 4.0% by mass or more based on the whole fiber 15.1% by mass or less.
Since the mixed powder and the fiber material resin are as described above, the description thereof is omitted.

The fiber of the present invention is obtained, for example, by the fiber production method of the present invention described above, and is obtained by kneading plant powder and pigment powder into a fiber material resin.
And the fiber of the present invention has the above-described configuration, so that the purpose of the fiber is larger than that when a plant powder or pigment powder having a large particle size is used or when any of plant powder, pigment powder, and polysaccharide is not used. The fiber is colored in a color having the hue and density of 2 and has a practically sufficient strength. The fiber of the present invention is a biodegradable fiber that is easily biodegraded after the fiber is discarded due to the presence of polysaccharides in the fiber.

The thickness of the fiber of the present invention is not particularly limited, but the fiber diameter may be 10 times or more the maximum volume average particle diameter of the powder contained in the mixed powder. For example, if the volume average particle diameter of the powder contained in the mixed powder is 1 μm or less, the fiber diameter may be 10 μm or more. In addition, as a diameter of a fiber, the range of 10 micrometers or more and 34 micrometers or less is mentioned, for example.
Further, the length of the obtained fiber is not particularly limited, and may be a filament shape that is a long fiber or a staple shape that is a short fiber.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated further more concretely, this invention is not restrict | limited at all by these Examples.

[Example 1]
<Mixed powder adjustment process>
The following powders 1 to 7 were put in a plastic bag and mixed well to obtain a mixed powder.
Powder 1: Coffee residue (plant powder, volume average particle size: 1 μm, particle size distribution: 0.5 μm to 1.2 μm, proportion of particles with a particle size exceeding 1.2 μm: 0%) 0.5 parts by mass Powder 2: Zinc oxide powder (pigment powder, manufacturer: manufactured by Miyazawa Pharmaceutical Co., Ltd., volume average particle size: 1 μm, particle size distribution: 0.3 μm to 1.2 μm, ratio of particles having a particle size exceeding 1.2 μm: 0% ) 0.5 parts by mass / powder 3: apatite ore powder (pigment powder, made in Brazil, volume average particle size: 1 μm, particle size distribution: 0.3 μm to 1.2 μm, particle size exceeding 1.2 μm Ratio: 0%) 1.0 part by mass Powder 4: Black tourmaline ore powder (pigment powder, volume average particle size: 1 μm, particle size distribution: 0.3 μm to 1.2 μm, particle size exceeds 1.2 μm Ratio of particles: 0%) 1.5 parts by mass / Powder 5: Monazite powder (pigment powder, commonly referred to as Rare's) Stone powder, made in Australia, volume average particle size: 1 μm, particle size distribution: 0.3 μm to 1.2 μm, proportion of particles with particle size exceeding 1.2 μm: 0%) 0.5 parts by mass / powder 6: Synthetic pigment (pigment powder, manufacturer: Matsumi Pigment Company, model number: Matsumine Neo Color Tea, volume average particle size: 0.3 μm, particle size distribution: 0 to 0.6 μm, proportion of particles with a particle size exceeding 1.2 μm : 0%) 0.5 parts by mass / Powder 7: Starch (polysaccharide, corn starch, manufacturer: manufactured by Nisshin Seifun, volume average particle size: 1 μm, proportion of particles having a particle size exceeding 1.2 μm: 0%) 0.05 parts by mass

The powder 1 is a residue obtained by extracting coffee from coffee beans, pulverizing with water, grinding with a mill, passing over a mesh, and drying to dryness. In addition, the powder 1 is an absolute dry substance, and the moisture content is 4 mass% or less.
The powders 2 to 5 are pulverized by a rock crusher and a hydraulic press to a particle size of 3 μm or less, then mixed with water by a wet pulverization method and further pulverized until the volume average particle size becomes 1 μm by a mill, After passing through the mesh, the water was evaporated and dried.
Moreover, the moisture content of the obtained mixed powder is 4 mass% or less.

<Mixed powder addition process, injection process>
As the fiber material resin, 95.75 parts by mass of a polyester resin (manufactured by Toray Industries, Inc.) was used. That is, the addition ratio of the mixed powder and the fiber material resin was adjusted so that the addition amount of the mixed powder was 4.25% by mass with respect to the entire mixed powder and the fiber material resin.
Moreover, the manufacturing apparatus 10 shown in FIG. 1 was used as a manufacturing apparatus which manufactures a fiber.

  First, the mixed powder obtained in the mixed powder adjusting step was added little by little from the hopper 18 of the manufacturing apparatus 10 to the mixing unit 22, and the inside of the mixing unit 22 was stirred. Next, after visually confirming that the fiber material resin and the mixed powder in the mixing unit 22 are uniformly mixed to adjust the fiber forming composition, the mixing unit 22 is pressurized to apply the fiber forming composition. The product was injected from the injection port 20 and the polyester fiber was spun.

<Evaluation of fiber>
The obtained fiber had a thickness of 3 denier (diameter 34 μm) and was a brown (specifically, a color between brown and gray) polyester fiber (long fiber). Further, since the fiber obtained in this example is a plant powder and pigment powder dispersed in a resin, it is colored in a unique color tone (soft color tone) that cannot be obtained with a single plant powder or pigment powder. It was.

-Strength evaluation-
Evaluation of strength, Japanese Industrial Tadashi rated number JIS L1096: 2010 tests were carried out by "textile and fabric testing method of knitting". As a result, the strength of the fiber obtained in Example 1 was as follows, and it was confirmed that a practically sufficient strength was maintained.
Tensile strength: 4 g / D (ie 3 g / D or more)
Dry-wet strength ratio: 77% (ie 70% or more)
Hatch strength: 3.4 g / D (that is, 2 g / D or more)
Standard time elongation: 25% (ie, 20% or more)
Elongation when wet: 23% (ie 20% or more)
Elastic modulus at 3% elongation: 23% (ie, 20% or more)
Initial tensile resistance: 80 g / D (ie, 50 g / D or more)

[Example 2]
<Mixed powder adjustment process>
The following powders 11 to 14 were placed in a plastic bag and mixed well to obtain a mixed powder.
Powder 11: Coffee residue (plant powder, volume average particle size: 1 μm, particle size distribution: 0.5 μm to 1.2 μm, proportion of particles with a particle size exceeding 1.2 μm: 0%) 7.0 parts by mass Powder 12: Monazite powder (pigment powder, commonly referred to as Lairs ore powder, Australian, volume average particle size: 1 μm, particle size distribution: 0.3 μm to 1.2 μm, particles having a particle size exceeding 1.2 μm Proportion: 0%) 3.0 parts by mass / powder 13: Synthetic pigment (pigment powder, manufacturer: Matsumi Pigment Co., Ltd., model number: Matsumi Neo Color Black, volume average particle size: 0.3 μm, particle size distribution: 0 to 0 .5 μm, the ratio of particles having a particle size exceeding 1.2 μm: 0% 5.0 parts by weight, powder 14: starch (polysaccharide, corn starch, manufacturer: Nisshin Flour Milling, volume average particle size: 1 μm, particle (Ratio of particles having a diameter exceeding 1.2 μm: 0%) 0.79 parts by mass Powder 1 and powder 12 are those obtained in the same manner as the powder 1 and powder 5. Moreover, the moisture content of the obtained mixed powder is 4 mass% or less.

<Mixed powder addition process, injection process>
As the fiber material resin, 84.95 parts by mass of a polyester resin (manufactured by Toray Industries, Inc.) was used. That is, the addition ratio of mixed powder and fiber material resin was adjusted so that the addition amount of mixed powder might be 15.05 mass% with respect to the whole mixed powder and fiber material resin.
A polyester fiber was spun in the same manner as in Example 1 except that the mixed powder and the fiber material resin were as described above.

<Evaluation of fiber>
The obtained fiber had a thickness of 3 denier (diameter 34 μm) and was a gray polyester fiber (long fiber). Further, since the fiber obtained in this example is a plant powder and pigment powder dispersed in a resin, it is colored in a unique color tone (soft color tone) that cannot be obtained with a single plant powder or pigment powder. It was.

When the strength was evaluated in the same manner as in Example 1, the strength of the fiber obtained in Example 2 was as follows, and it was confirmed that a practically sufficient strength was maintained.
Tensile strength: 4 g / D (ie 3 g / D or more)
Dry-wet strength ratio: 77% (ie 70% or more)
Hatch strength: 3.4 g / D (that is, 2 g / D or more)
Standard time elongation: 25% (ie, 20% or more)
Elongation when wet: 23% (ie 20% or more)
Elastic modulus at 3% elongation: 23% (ie, 20% or more)
Initial tensile resistance: 80 g / D (ie, 50 g / D or more)

As described above, in this example, it can be seen that the target color can be obtained and a fiber having a practically sufficient strength can be obtained. Moreover, it turns out that a fiber with favorable biodegradability is obtained in a present Example.

10, 100 Manufacturing device 12, 112 Storage unit 14, 114 Introducing unit 24, 116 Discharge pipe 18, 118 Hopper 20, 120 Injection port 22 Mixing unit

Claims (7)

Mixed powder made a tone and a volume average particle diameter 0.001μm or more 1.2μm following plant powder and a volume average particle diameter 1.2μm or less of the pigment powder and starch least 0.001μm obtained by grinding the plant And a process of
It was added to the mixed powder to the molten fiber material resin, a step of, prepare fiber-forming composition comprising the mixed powder and the fibrous material resin,
Injecting the fiber-forming composition from an injection port to form fibers;
The manufacturing method of the fiber which has this. Mixed powder made a tone and a volume average particle diameter 0.001μm or more 1.2μm following plant powder and a volume average particle diameter 1.2μm or less of the pigment powder and starch least 0.001μm obtained by grinding the plant And a process of
Part of the fiber material resin is melted, and the mixed powder is added to the melted part of the fiber material resin and molded to form a processing mixture molding including the part of the fiber material resin and the mixed powder. And a process of
Step the fiber material of the remainder of the resin is melted, the melted with the addition of the treatment mixture molded to the remainder of the fiber resin material is made of regulating the fiber-forming composition containing the powder mixture and the fibrous material resin When,
Injecting the fiber-forming composition from an injection port to form fibers;
The manufacturing method of the fiber which has this. A mixed powder containing a plant powder having a volume average particle size of 0.001 μm or more and 1.2 μm or less, a pigment powder having a volume average particle size of 0.001 μm or more and 1.2 μm or less, and starch obtained by pulverizing a plant is melted. The mixture formed for processing obtained by adding and molding to a part of the fiber material resin was added to the remaining part of the molten fiber material resin to form a fiber containing the mixed powder and the fiber material resin. a step of manufactured of the use composition adjustment,
Injecting the fiber-forming composition from an injection port to form fibers;
The manufacturing method of the fiber which has this.   The fiber production according to any one of claims 1 to 3, wherein an amount of the mixed powder added is 4.0% by mass or more and 15.1% by mass or less with respect to the fiber-forming composition. Method.   The manufacturing method of the fiber of any one of Claims 1-4 whose said plant body is a plant waste. A fiber material resin, and a mixed powder dispersed in the fiber material resin,
The mixed powder includes a plant powder having a volume average particle size of 0.001 μm to 1.2 μm obtained by pulverizing a plant, a pigment powder having a volume average particle size of 0.001 μm to 1.2 μm, starch, Including,
The fiber whose content of the said mixed powder is 4.0 to 15.1 mass% with respect to the whole fiber. The fiber according to claim 6 , wherein the plant body is a plant waste.