WO2016017800A1

WO2016017800A1 - Production method for fine-particle-adsorbing material

Info

Publication number: WO2016017800A1
Application number: PCT/JP2015/071797
Authority: WO
Inventors: 勝代村上
Original assignee: 勝代村上
Priority date: 2014-07-31
Filing date: 2015-07-31
Publication date: 2016-02-04
Also published as: JP5639302B1; CN106573226B; JP2016032793A; CN106573226A

Abstract

In the present invention, the pith of soft rushes is separated from the outer skin thereof. Then, the pith separated from the outer skin is soaked in a liquid. Then, the pith that has been soaked in the liquid is sheared and ground. Then, an adhesive agent such as a starch paste is added to the sheared and ground pith. Then, the ground pith to which the adhesive agent is added is applied to a material having a net structure by spraying or the like. Accordingly, a fine-particle-adsorbing material that adsorbs fine particles, such as PM2.5, at a high adsorption rate is produced. The fine-particle-adsorbing material produced in this way can be used as a mask, a filter for an air cleaner, or the like.

Description

Manufacturing method of particulate adsorption material

The present invention relates to a method for producing a material that adsorbs fine particles.

There is a technology that removes substances harmful to the human body, such as formaldehyde, by adsorbing them to the grass material.

For example, Patent Document 1 discloses paints, binders, paper, twisted yarns, spun fibers, and wall materials having a harmful substance-adsorbing action using finely crushed rush grasses and powders or linear bodies. Materials such as knitted fabrics and cocoons have been proposed.

JP 2002-670006 A

It is known that grass is composed of the outer skin and the medulla covered with the outer skin, and adsorbs gaseous chemical substances such as formaldehyde in the medulla rather than the outer skin. However, fine particles such as PM2.5 (Particulate Matter 2.5) having a particle size larger than that of a chemical substance in gas (in this application, “fine particles” means particles of the order of 1 μm to 10 μm) Whether it was adsorbed or not was unknown.

The inventor of the present application has obtained the following knowledge through an original experiment.
(1) Grasses adsorb particulates such as PM2.5.
(2) The adsorption rate of fine particles (the number of adsorptions per unit area) is much higher in the medulla than the husk of rush.
(3) Fine particles such as PM2.5 are adsorbed on the surfaces of the branches forming the sponge structure provided in the medulla of the grass.
(4) If the grass is pulverized to the order of 1 mm or less without separating the hull and the medulla, many branches of the medulla are destroyed. (Even if the pulverization method is shear pulverization, almost no medullary branch structure remains.)

Supplementing the above findings, it has been conventionally known that the medulla mushroom has a sponge structure (three-dimensional network structure). Therefore, if particulates such as PM2.5 are removed by the medulla of rush, it is assumed that the mesh of the sponge structure captures particulates such as PM2.5. However, it is presumed that the mesh of the medulla medulla has a mesh structure of the order of 10 μm, and fine particles having a particle size smaller than the order of 10 μm such as PM2.5 are not captured by the medulla medulla. Contrary to these assumptions, as described in (3) above, it has been found that particulates such as PM2.5 are actually adsorbed on the surface of the branches forming the sponge structure of the medulla medulla.

The present invention aims to provide a fine particle adsorbing material that adsorbs fine particles such as PM2.5 at a high adsorption rate based on the above findings.

In order to solve the above-described problems, the present invention provides a separation step of separating the medulla medulla from the outer skin, an infiltration step of infiltrating liquid into the medulla medulla separated from the outer skin in the separation step, and the infiltration step A method for producing a fine particle adsorbing material comprising a shearing and grinding step of shearing and crushing the medulla of licorice infiltrated with a liquid is provided as a first aspect.

Moreover, this invention is a manufacturing method concerning said 1st aspect WHEREIN: The structure of providing the cutting process which cut | disconnects the medulla of the grass which was isolate | separated from the outer skin after the said isolation | separation process and before the said infiltration process. Is provided as a second aspect.

In the manufacturing method according to the first aspect of the present invention, the manufacturing method according to the first aspect further includes a tearing step for tearing the medulla of the grass isolated from the outer skin after the separation step and before the infiltration step. Provided as a third aspect.

Further, the present invention provides a material having a mesh structure, wherein the medulla mushroom infiltrated with liquid, which has been sheared and ground in the shearing and grinding step, in the manufacturing method according to any one of the first to third aspects described above. The structure which is provided with the application | coating process apply | coated to is provided as a 4th aspect.

Further, the present invention provides, as a fifth aspect, a configuration in which the application in the application step is an application by spraying in the manufacturing method according to the fourth aspect.

The present invention also provides the manufacturing method according to any one of the first to third aspects, wherein the pith of rush grass infiltrated with liquid, which is sheared and ground in the shearing and grinding step, is mixed and mixed with a fiber material. A configuration is provided as a sixth aspect, comprising a mixing step for generating a raw material and a liquid removal step for removing liquid from the mixed material generated by the mixing step.

Further, the present invention includes the compression step of compressing the mixed material generated in the mixing step in the liquid removal step or after the liquid removal step in the manufacturing method according to the sixth aspect. This configuration is provided as a seventh aspect.

Further, the present invention provides the production method according to any one of the first to seventh aspects, wherein the application step of applying an adhesive to the medulla mushroom at any timing after the separation step. A configuration of providing is provided as an eighth aspect.

In addition, the present invention provides the drainage method for draining from the medulla of the grass infiltrated with the liquid, which has been sheared and ground in the shearing and grinding step, in the manufacturing method according to any one of the first to third aspects. A step of applying a pressure-sensitive adhesive to the base material, and a surface of the base material to which the pressure-sensitive adhesive has been applied in the coating step is adhered to the surface of the base material coated with the pressure-sensitive adhesive. A ninth aspect is provided as a ninth aspect.

In addition, the present invention provides a manufacturing method according to any one of the first to third aspects,
According to a tenth aspect of the present invention, there is provided a configuration including a sealing step of sealing the medulla of the grass crushed and ground in the shearing and grinding step in a sheet-like body having air permeability.

According to the present invention, a fine particle adsorbing material containing medulla moss, which is separated from the outer skin and maintains many branch structures, is produced. As a result, a particulate adsorption material that adsorbs particulates such as PM2.5 at a high adsorption rate is obtained.

Also, the fine particle adsorbing material does not substantially contain a rush of rush. Note that “substantially no outer skin” means that a minute amount of outer skin that is not separated from the marrow and mixed in the separation step is included in the particulate adsorbing material. Therefore, a fine particle adsorbing material that adsorbs fine particles at a high adsorption rate and has an excellent appearance as compared with a material containing a husk of rush.

A photomicrograph showing the structure of the grass. A photomicrograph showing the structure of medulla mushrooms and how fine particles are adsorbed. The flowchart which shows the manufacturing method of the fine particle adsorption material concerning one Embodiment. The figure which shows an example of the method of extruding and isolate | separating the medulla of a grass. The figure which shows an example of the instrument for extruding and isolate | separating the medulla of a grass from the outer skin, and its usage. The flowchart which shows the manufacturing method of the fine particle adsorption material concerning one Embodiment. The flowchart which shows the manufacturing method of the fine particle adsorption material concerning one Embodiment. The flowchart which shows the manufacturing method of the fine particle adsorption material concerning one Embodiment.

[Embodiment]
FIG. 1 is a photomicrograph of a cross section obtained by cutting a cypress into a semi-cylindrical shape along a longitudinal direction. As shown in FIG. 1, the grass 1 is composed of an outer skin 11 and a medulla 12 covered with the outer skin 11.

FIG. 2 is a photomicrograph of the medulla of grass after exposure for a predetermined time to the outside air in which particulates such as PM2.5 float. As shown in FIG. 2, the medulla of the grass has a sponge structure (three-dimensional network structure), and the fine particles 2 are adsorbed on the surfaces of the branches forming the sponge structure.

[First embodiment]
FIG. 3 is a flowchart showing a method for producing a particulate adsorption material according to an embodiment of the present invention. First, the medulla of rush is separated from the outer skin (separation step, step S11). As a method for separating the medulla from the outer skin in step S11, the following examples may be adopted, but are not limited thereto.

(1) Separate by peeling the outer skin so that it crawls from the medulla.
(2) Place one end of a short cut rush on a table, hold it down, and move it from the end toward the other end while pressing a rod or the like to separate it by squeezing the marrow ( FIG. 4).
(3) A push bar having a diameter smaller than the inner diameter of the outer skin is pushed in the axial direction of the cut short grass, and the marrow is separated from the outer skin by pushing it out.
(4) The medulla exposed on the cut surface of the grass cut into a semi-cylindrical shape along the longitudinal direction is separated by scraping with a stick or the like.

FIG. 5 is a diagram showing a device originally invented to separate the marrow from the outer skin and how to use it. The instrument 3 shown in FIG. 5 includes a cutter unit 31 that cuts the outer skin and a spoon-shaped scraping unit 32 that scrapes the marrow.

For example, in the vicinity of one end of the grass 1 cut to about 5 cm, the operator inserts the blade tip of the cutter unit 31 into the grass 1 and then slides the instrument 3 toward the other end of the grass 1. . At this time, the cutter unit 31 cuts the outer skin of the grass 1 along the longitudinal direction, and the scraping portion 32 scrapes the marrow from between the cut outer skins.

Referring back to FIG. 3, the description of the method for producing the fine particle adsorbing material according to the present example will be continued. Subsequently, the medulla separated from the outer skin is cut (cutting step) by an instrument such as scissors or a cutting device such as a cutter mill (cutting step), or is torn (tearing step), so that the length of the spinal cord is approximately 1 mm to 1 cm. Order) (step S12). Note that the appearance (texture) of the finally produced fine particle adsorbing material differs depending on whether the pith is cut or torn in step S12. Note that the cutting step and the tearing step may be omitted depending on the purpose.

Subsequently, the liquid is infiltrated into the marrow separated from the outer skin (or the marrow shortened by cutting or tearing after being separated from the outer skin) (infiltration step, step S13). The liquid used for infiltrating the marrow in the infiltration process is, for example, water, but is not limited thereto. In addition, the amount of liquid used to infiltrate the medulla in the infiltration process is preferably about 300 cc to 400 cc with respect to 1 g of medulla when the liquid is water, for example. The inventor of the present application has confirmed through experiments that the pulverization efficiency in the shear pulverization step described below is reduced when an amount of water outside the above-mentioned range is used.

Subsequently, the medulla infiltrated with the liquid (including the liquid that has not infiltrated the medulla used in the infiltration process) is put into a shear pulverizer and sheared and pulverized (shear pulverization process, step S14). Here, the shear pulverization means pulverization by shearing the medulla with a shearing blade, and does not include, for example, pulverization by grinding a ball mill or a mortar.

By adopting shear pulverization in the pulverization of the medulla, many of the medullary branches remain without being destroyed. Therefore, the ability to adsorb particulates such as PM2.5 on the surface of the branch by pulverization does not decrease. The inventor of the present application found that when the outer skin and the medulla were sheared and pulverized as they were without separating the medulla from the outer skin, the medullary branch structure was hardly left when the outer skin was pulverized to the order of 1 mm or less. As described above.

Also, when performing shearing and grinding, if the dried pith is applied to a shearing and grinding machine without passing through the infiltration step, the pith cannot be shattered to a particle size of the order of 100 μm or less. This is presumably because the spinal cord is provided with a sponge structure, and the spinal cord is moved by wind force generated by rotation of the shearing blade or the like so as to avoid the shearing blade. The inventor of the present application conducts various experiments, and by shearing and pulverizing the spinal cord in a state where the spinal cord is infiltrated with the liquid, the sponge-like spinal cord can be miniaturized to a particle size of the order of 100 μm or less while maintaining the branch structure. discovered.

Subsequently, a pressure-sensitive adhesive is applied to the liquid containing the sheared and crushed pith (application step, step S15). The pressure-sensitive adhesive used in the application step is, for example, starch paste, but is not limited thereto. However, it is desirable to use an adhesive derived from animals and plants that is less likely to be harmful to the human body (for example, rice paste, glue, cloth nori). Note that the applying step may be omitted depending on the purpose.

Subsequently, the liquid material including the refined pith generated through the above process is applied to the material having a network structure (application process, step S16). Examples of the material having a network structure used in the coating process include, but are not limited to, gauze, non-woven fabric, air cleaner filter, and the like.

Further, the application method in the application step is, for example, spraying, but is not limited thereto, and brushing, impregnation, etc. may be employed depending on the purpose and the characteristics of the object to be applied.

Subsequently, the material having a network structure to which the liquid material including the refined pith is applied is dried (drying step, step S17). Thereby, the particulate adsorbing material in the present embodiment is manufactured. The fine particle adsorbing material manufactured in this way is used as, for example, a filter for a mask or an air cleaner, but its application is not limited thereto.

It should be noted that the liquid material including the fined pith produced by the shearing and grinding step or the applying step can itself be provided to the user as a fine particle adsorbing material. The user can easily add the particulate adsorption performance to an existing mask or filter by spraying the particulate adsorption material on, for example, a commercially available mask or a filter of an air cleaner. Further, the user can easily add the particulate adsorption capability to an existing wall or the like by applying the particulate adsorption material to the wall or the like of the home by spraying, brushing, or the like. Further, the user can remove fine particles floating in the air by spraying the fine particle adsorbing material in the air, for example.

[Second Embodiment]
FIG. 6 is a flowchart showing a method for producing a particulate adsorbing material according to another embodiment of the present invention. Steps S21 to S24 performed in the manufacturing method of the present embodiment are the same as steps S11 to S14 in the flow shown in FIG.

In the present embodiment, following the shear pulverization step of step S24, a liquid material containing finely divided marrow (the marrow that has been infiltrated with liquid and pulverized) is mixed with the fiber material, and the marrow and the fiber material are mixed. A mixed material is generated (mixing step, step S25). The fiber material used in the mixing step is, for example, cotton, but is not limited thereto. In addition, as a method of mixing the liquid material including the fined medulla and the fiber material in the mixing step, for example, stirring with a stirring rod, mixing while mixing with the hands of an operator, etc. can be adopted. Not limited.

Subsequently, liquid removal is performed from the mixed material generated in the mixing process (liquid removal process, step S26). Examples of the liquid removal method include, but are not limited to, dropping the mixed material from the net, or rolling (or papering) the mixed material with a net.

Subsequently, the mixed material drained in the draining process is shaped so that the thickness is substantially uniform (shaping process, step S27). In the mixing step, when the mixed material is drained in a shaped state, the shaping step may be omitted.

Subsequently, the liquid mixture that has been drained is compressed (compression step, step S28). As a compression method, for example, a method of sandwiching and pressing a mixed material between two compression plates can be adopted, but the method is not limited thereto. The main purpose of the compression process is to increase the strength while reducing the thickness of the material.

Subsequently, an adhesive is applied to the compressed mixed material (applying step, step S29). This application step is the same as the step S15 in the flow shown in FIG.

Subsequently, the mixed material to which the adhesive has been applied is further compressed (compression process, step S210). This compression process is the same as the process of step S28. Note that either step S28 or step S210 may be omitted.

Subsequently, the mixed material compressed with the adhesive is dried (drying step, step S211). Thereby, the particulate adsorbing material in the present embodiment is manufactured. The fine particle adsorbing material manufactured in this way is used as, for example, a wall material, but its use is not limited thereto.

[Third embodiment]
FIG. 7 is a flowchart showing a method for producing a particulate adsorbing material according to another embodiment of the present invention. Steps S31 to S34 performed in the manufacturing method of the present embodiment are the same as steps S11 to S14 in the flow shown in FIG. However, in the infiltration process in step S33, when the particle size of the medulla may be large according to the use of the particulate adsorbing material to be manufactured, the amount of liquid with respect to the medulla is less than in the infiltration process in step S13. May be. In this way, by reducing the amount of liquid used for the medulla, the particle size of the medulla generated in the shear pulverization in step S34 can be increased.

In the present embodiment, following the shear pulverization step of step S34, the same liquid removal as step S26 of the flow shown in FIG. 6 is performed (liquid removal step, step S35). Subsequently, the drained and refined pith is dried (drying step, step S36).

Subsequently, an adhesive is applied to the surface of the separately prepared base material (application process, step S37). As the base material used in step S37, for example, a plate-like body, a sheet-like body such as paper, a fiber material such as gauze, and the like can be adopted, but not limited thereto. Moreover, although the adhesive used in step S37 is a starch paste, for example, it is not restricted to this. However, it is desirable to use an adhesive derived from animals and plants that is less likely to be harmful to the human body (for example, rice paste, glue, cloth nori). In addition, the method of applying the adhesive to the substrate in step S37 may be any of spraying, brushing, impregnation and the like. Note that step S37 may be performed in parallel with steps S31 to S36.

Subsequently, the refined pith dried in step S36 is attached to the surface of the base material coated with the adhesive in step S37 (attachment step, step S38). As the attachment method in step S38, for example, a base material coated with an adhesive is placed in a container containing finely divided pith, and the finely divided pith is sprayed onto a base material coated with an adhesive. Can be, but is not limited to.

Subsequently, the pressure-sensitive adhesive having the micronized pith attached to the surface of the base material is dried (drying step, step S39). Thereby, the particulate adsorbing material in the present embodiment is manufactured. The fine particle adsorbing material manufactured in this way is used as, for example, a wall material, a wallpaper, a mask, or the like according to the type of the base material, but the application is not limited thereto.

In addition, in preparation for peeling off of the medulla adhering to the base material, a covering step of covering the surface of the base material on which the medulla adheres with a sheet material having air permeability may be performed after step S38 or step S39.

Also, depending on the application of the particulate adsorbing material to be manufactured, the size of the medulla may be in the order of 1 mm to 1 cm. In this case, if the size of the medulla is cut or torn to a desired size in step S32, steps S33 to S36 may be omitted.

In the fine particle adsorbing material manufactured by the manufacturing method according to the present example, most of the surface of the medulla is not covered with the adhesive. For example, even if the concentration of the adhesive used is increased, the adhesive has an effect of adsorbing the fine particles. It is not reduced and shows high adsorption performance.

[Fourth embodiment]
FIG. 8 is a flowchart showing a method for producing a particulate adsorption material according to another embodiment of the present invention. Steps S41 to S44 performed in the manufacturing method of the present embodiment are the same as steps S11 to S14 in the flow shown in FIG. However, in the infiltration process in step S43, it is desirable to reduce the amount of liquid with respect to the medulla compared with the case of the infiltration process in step S13. For example, when water is used as the liquid to be used, it is desirable to use about 100 cc to 200 cc of water per 1 g of marrow. In this way, by reducing the amount of liquid used for the medulla, the particle size of the medulla generated in the shear pulverization in step S44 can be increased. The particle size of the medulla generated in step S44 is, for example, on the order of 100 μm to 1 mm.

Subsequently, a liquid removal process (step S45) and a drying process (step S46) are performed. Steps S45 to S46 are the same as steps S35 to S36 of FIG.

Subsequently, the dried and refined medulla is encapsulated in a breathable sheet (encapsulation step, step S47). As the sheet-like body used in step S47, for example, a non-woven sheet, cotton cloth, linen, fine nylon mesh sheet, or the like can be used, but is not limited thereto. In addition, as a sealing method in step S47, for example, a method of closing the opening of the sheet-like body by sewing, bonding, or the like after inserting the fined pith from the opening of the sheet-like body formed in advance in a bag shape, A method of stitching the two sheet-like bodies in a form in which the pulverized medulla is sandwiched between the two sheet-like bodies can be employed, but is not limited thereto.

Note that step S45 may be performed simultaneously with step S47. In this case, the sheet-like body serves as a net for liquid removal. In this case, step S46 is performed after step S47.

Also, depending on the application of the particulate adsorbing material to be manufactured, the size of the medulla may be in the order of 1 mm to 1 cm. In this case, steps S43 to S46 may be omitted if the size of the medulla is cut or torn to a desired size in step S42.

The fine particle adsorbing material manufactured in this way is used as, for example, a filter or a wall material (interior material), but its application is not limited thereto. For example, you may comprise so that the fine particle adsorption material concerning this invention may be included in the cleaning sheet which wipes off dirt. In this case, particulates such as PM2.5 are efficiently removed by the cleaning sheet. Further, the fine particle adsorbing material according to the present invention may be included in various cosmetics such as gels and creams used for facial cleansers, shampoos, body soaps, and gorges (treatment to remove old keratin from the body using natural materials). Good. In this case, particulates such as PM2.5 adhering to the body as dirt are efficiently removed from the body. In addition, when the body is massaged using a gorgeous gel or cream containing the fine particle adsorbing material according to the present invention, the shape of the crushed licorice wick and the moderate hardness makes the old keratin without damaging the body. It has also been confirmed that removal takes place.

The manufacturing method described above is an embodiment of the present invention, and can be variously modified within the scope of the technical idea of the present invention.

For example, the flow of the manufacturing method shown in FIGS. 3 and 6 to 8 is an example, and a part of the order of the steps constituting the manufacturing method can be changed. For example, the application process for applying the adhesive to the material may be performed at the same time in the infiltration process and the shear pulverization process as long as the timing is after the separation process. Also good.

DESCRIPTION OF SYMBOLS 1 ... I grass, 11 ... Outer skin, 12 ... Spinal cord, 2 ... Fine particle, 3 ... Instrument, 31 ... Cutter part, 32 ... Scraping part

Claims

A separation step of separating the medulla from the outer skin,
An infiltration step of infiltrating a liquid into the medulla of the grass isolated from the outer skin in the separation step;
A method for producing a fine particle adsorbing material, comprising: a shear pulverization step of shearing and pulverizing the medulla of rush grass infiltrated with a liquid in the infiltration step.
The manufacturing method of the fine particle adsorption | suction raw material of Claim 1 provided with the cutting process which cut | disconnects the medulla of the grass isolated from the outer skin after the said separation process and before the said infiltration process.
The method for producing a fine particle adsorbing material according to claim 1, further comprising a tearing step for tearing the medulla of the grass isolated from the outer skin after the separation step and before the infiltration step.
The fine particle adsorbing material according to any one of claims 1 to 3, further comprising: an application step of applying the spinal cord of leeks infiltrated with liquid, which has been sheared and ground in the shearing and grinding step, to a material having a network structure. Production method.
The method for producing a fine particle adsorbing material according to claim 4, wherein the application in the application step is application by spraying.
A mixing step of mixing the medulla of rush grass infiltrated with the liquid shear-ground in the shear-pulverization step with a fiber material to produce a mixed material;
A method for producing a particulate adsorption material according to any one of claims 1 to 3, further comprising: a liquid removal step of performing liquid removal from the mixed material generated by the mixing step.
The method for producing a fine particle adsorbing material according to claim 6, further comprising a compression step of compressing the mixed material generated in the mixing step in the liquid removing step or after the liquid removing step.
The method for producing a fine particle adsorbing material according to any one of claims 1 to 7, further comprising an application step of applying an adhesive to the medulla of the grass at any timing after the separation step.
A draining step of draining from the medulla of rush grass infiltrated with liquid, which was sheared and ground in the shearing and grinding step;
An application step of applying an adhesive to the substrate;
An attachment step of attaching the pulverized mushroom medulla, which has been drained in the draining step, to the surface of the substrate on which the adhesive has been applied in the coating step. A method for producing the fine particle adsorbing material according to Item.
The method for producing a fine particle adsorbing material according to any one of claims 1 to 3, further comprising: an enclosing step of enclosing the medulla of the grass crushed and crushed in the shearing and pulverizing step into a sheet-like body having air permeability.