JP5718143B2 - Transpiration material - Google Patents

Description

  The present invention is, for example, a transpiration that produces an effect by evaporating a transpiration component such as a pest control agent (insecticide, repellent, etc.), a fragrance, a deodorant / deodorant, a bactericide, and a fungicide at room temperature. Regarding materials.

  Conventionally, a transpiration material that continuously evaporates a drug in the space by impregnating a liquid-absorbing carrier with a room temperature transpiration drug such as a pest control agent and hanging or placing it indoors or outdoors. Is known (see, for example, Patent Document 1). In such a transpiration material, as the liquid-absorbent carrier, a material processed into a plate shape or a sheet shape by, for example, solidifying pulp or natural fiber with a binder is used because it can be easily discarded. It was.

  In order to evaporate the drug continuously over a long period of time by the evaporating material, the amount of the drug per unit area held on the carrier must be increased in proportion to the desired period. However, if the amount of drug to be retained exceeds the allowable amount that can be impregnated into the carrier, problems such as chemical leakage occur. For this reason, the effective period of the transpiration material is limited, and depending on the type of the drug, etc., the conventional transpiration material can only obtain an effective period of up to about 30 days. Therefore, there is a demand for a transpiration material that can further increase the amount of drug that can be held per unit area and can effectively exert a longer period of time.

JP 2002-241202 A

  An object of the present invention is to provide a transpiration material capable of increasing the amount of transpiration component retained and capable of stably transpiration of the transpiration component over a long period of time.

  As a result of intensive studies to solve the above problems, the present inventors have completed the present invention.

That is, the transpiration material of the present invention is provided with a volatile material that retains the transpiration component, and the volatile material is composed of short fibers and long fibers, and is provided with vent holes.
The ratio of the short fiber to the long fiber is preferably short fiber: long fiber = 10: 90 to 80:20 in weight ratio.
In addition, the transpiration material of the present invention preferably further includes a frame body that holds the volatile body, and a storage body that has air permeability and detachably stores the frame body.

According to the transpiration material of the present invention, since the volatilization body contains short fibers, the retention amount of the transpiration component is increased, and the volatilization body is formed with air holes. There is an effect that it can be stably evaporated.
Specifically, in the transpiration material of the present invention, the amount of the transpiration component (drug) that can be held per unit area of the volatilizer can be increased as compared with the conventional one, and the effective period can be extended. .

It is the schematic which shows an example of the braiding method of the net | network which concerns on one Embodiment of this invention. It is the schematic which shows the other example of the braiding method. It is a front view which shows the transpiration | evaporation material which concerns on one Embodiment of this invention. FIG. 4 is a schematic sectional view taken along line xx of FIG. 3. It is a top view of the transpiration | evaporation material shown in the said FIG. It is a front view which shows an example of the cartridge type frame in the transpiration | evaporation material shown in the said FIG. It is a schematic sectional drawing when the transpiration material which is other embodiment of this invention is cut | disconnected in the thickness direction. FIG. 3 is a schematic diagram illustrating an enlarged network of nets obtained in Example 1. 6 is an enlarged schematic diagram showing a mesh of a net obtained in Example 2. FIG. 6 is an enlarged schematic diagram showing a mesh of a net obtained in Example 3. FIG. 6 is an enlarged schematic diagram showing a mesh of a net obtained in Example 4. FIG. FIG. 10 is a schematic diagram showing an enlarged network of nets obtained in Example 5. 6 is an enlarged schematic diagram showing a net of the net obtained in Comparative Example 1. FIG. It is a schematic diagram which shows the test apparatus used for the pest control efficacy test. It is a graph which shows the relationship between the elapsed time of a pest control efficacy test, and a knockdown rate.

The transpiration | evaporation material of this invention hold | maintains a transpiration | evaporation component in the net | network (volatilization body) formed from the short fiber and the long fiber. This net has openings that serve as vents useful for the evaporation of transpiration components.
The net in the present invention, for example, by using a short fiber yarn and a long fiber yarn, making a loop of the yarn, hooking the next yarn on the loop and continuously creating a new loop, etc. Yarns are entangled with each other, and the mesh of the yarn is connected to the front, back, left and right. Specifically, the yarn can be knitted using a technique such as lace knitting or knitting.

In the present invention, the short fiber yarn means, for example, a spun yarn formed by twisting short fibers arranged in parallel. In the present invention, the short fiber means a fiber having a fiber length of 100 mm or less, preferably about 20 to 60 mm, and is sometimes called a staple. In the case of chemical fiber, a short cut is used in order to use it as a raw material for spinning.
The diameter of the short fiber yarn in the present invention is not particularly limited, but it is usually 12 to 295 (cotton count, the same shall apply hereinafter), preferably 20 to 118. The decitex unit is 20 to 500 dtex, preferably 50 to 300 dtex. If the short fiber diameter is too small, the amount of transpiration component (drug) held may be reduced. On the other hand, if it is too large, the opening of the net (air hole) will be small, and the transpiration of the retained transpiration component will be reduced. May decrease.

  Examples of the short fiber material include natural fibers such as pulp, cotton, wool, hemp, and silk, polypropylene, polyethylene, polyamide, polyethylene terephthalate, polybutylene terephthalate, polysulfone, rayon, methacrylic acid resin, and other biodegradable materials. Resin (polyglycolic acid, polylactic acid, poly (β-hydroxybutyric acid)) and the like. Among these, polyethylene terephthalate, polypropylene, polybutylene terephthalate, and polyethylene are particularly preferable. The short fiber can be used by mixing one or more of these materials.

Examples of the long fiber material include the same materials as the short fiber material described above. The long fiber to be used may be the same material as the short fiber, or a material different from the short fiber may be used.
The short fiber and / or the long fiber may contain a conventionally known additive such as an antifungal agent, a dye, and an ultraviolet absorber.

  The short fiber and the long fiber are preferably in a ratio of short fiber: long fiber = 10: 90 to 80:20 by weight ratio. When the proportion of short fibers is less than the above range and the proportion of long fibers is more than the above range, it may be difficult to increase the amount of drug retained. On the other hand, when the proportion of short fibers is greater than the above range and the proportion of long fibers is less than the above range, the strength of the resulting net is inferior, and it may be difficult to knit the net.

In the present embodiment, a net is knitted using the short fiber yarn and the long fiber yarn.
The short fiber yarn may be formed using, for example, a single short fiber yarn obtained by spinning short fibers, but a plurality of (usually 2 to 5) short fibers spun. You may form using the thread | yarn (mixed-twisted yarn) which twisted further this yarn. As the mixed twisted yarn, yarns of the same material may be mixed, or yarns of different materials may be mixed.

  The number of twists of the yarn at the time of spinning is not particularly limited, and is usually 18 to 21 times per 2.54 cm (1 inch) length. Good.

The aforementioned long fiber yarn is composed of a plurality of filaments. This filament may be a so-called multifilament in which a plurality of monofilaments are bundled, or a single yarn bundle by knitting or twisting two or more monofilaments or multifilaments. It may be a thing.
The diameter of the filament (monofilament) is not particularly limited, but is usually 20 to 500 dtex, preferably 50 to 300 dtex. If the diameter of the filament (monofilament) is too small, the amount of transpiration component (drug) held may be reduced. On the other hand, if it is too large, the opening of the net (air hole) will be small, and Transpiration may be reduced.

In the present invention, it is preferable that crimps are imparted to at least a part of the long fiber yarn. Thereby, even if it is the same fabric weight, the retention amount of a transpiration component can be improved.
The crimps only need to be applied to at least a part of the yarn used for forming the net. For example, in the form of lace knitting described later, some of the plurality of long fiber yarns (warp yarns) are crimped. Shrinkage may be given. Further, crimps may be imparted to some of the filaments (monofilaments or multifilaments) constituting the long fiber yarn (that is, one filament with crimps imparted). The net may be formed by using the yarn including the above. Preferably, all the filaments, and thus all the filaments used, are crimped.

  The crimp may be imparted by any method and is not particularly limited. For example, the twisting-heat setting-untwisting method, false twisting method, indentation method, scraping method, bandit method, So-called textured processes such as a composite crimping method and an air injection method can be appropriately employed.

When the crimp is applied, the crimp ratio is not particularly limited, but it is usually preferably 3 to 50%. The crimp rate is the following formula, where a is the initial length of the filament, and b is the length when a constant load (1/11 g per 1 dtex) is applied to the filament for a certain time (30 seconds). It means the expansion / contraction elongation rate (%) calculated based on.
Expansion / contraction rate (%) = [(ba) / a] × 100
Specifically, the crimp rate (stretch elongation rate) is, for example, in accordance with the A method described in the section “a. Stretchability” of “Fiber Handbook” (first edition, published in 1969) p413. It can be carried out.

  The net in the present invention may be either woven or knitted, but is preferably formed by knitting, particularly lace knitting. Lace knitting is a knitting method in which a plurality of warps are entangled with each other. Here, as another warp, it is entangled with the warp at which position (for example, entangle with adjacent warps, entangle with one or more warps in between, or one of the left and right directions) There are various lace knitting forms depending on whether they are entangled only with each other or entangled with left and right alternately, etc., but particularly preferably, for example, as shown in FIG. 1 and FIG. There is a form of entanglement by flying. In such a configuration, since two or more yarns overlap in the weft direction (arrow X direction), the weight of the yarn per unit area (that is, the basis weight) increases, and the amount of transpiration component retained is further increased. be able to.

  In the form of lace knitting shown in FIG. 1, the warp A is entangled with the warp C and the warp B is entangled with the warp D, and two yarns overlap each other between the rows bc and cd (see FIG. 1). In FIG. 1, the left side warp of row a and the right side warp of row d are not shown). That is, in the form shown in FIG. 1, each warp is entangled with one warp in between. When the form shown in FIG. 1 is changed so that each warp is entangled with two warps in between (so that warp A in FIG. 1 is entangled with warp D), the weft direction (in each adjacent row) In the middle), the three yarns overlap. That is, if each warp is entangled with n warps, the (n + 1) yarns are overlapped in the weft direction (n is an integer of 1 or more). Since the amount of transpiration component increases as the number of yarns overlapping in the weft direction increases, in the present invention, the lace knitting form having a larger value of n is preferable. However, if the number of yarns that overlap in the weft direction (that is, the value of (n + 1)) becomes too large, the mesh opening (vent hole) becomes small, and the transpiration of the transpiration component held in the yarn may be reduced. The value of n is preferably set so that the aperture ratio is in the range described later, and is usually 5 or less.

Here, as the warp yarns A to D, the short fiber yarn and the long fiber yarn described above are used. The combination of the short fiber yarn and the long fiber yarn can be arbitrarily determined, and examples thereof include the following combinations.
(a) A combination in which any two warps A to D are short fiber yarns and the other warp yarns are long fiber yarns.
(b) A combination in which any one of warp yarns A to D is a long fiber yarn and the other warp yarn is a short fiber yarn.
(c) A combination in which any one of warp yarns A to D is a short fiber yarn and the other warp yarn is a long fiber yarn.

  In the form of lace knitting shown in FIG. 1, two types of warp yarns are successively arranged in the warp direction (arrow Y direction) (for example, warp C and warp A are continuous in row c, and warp is in row d. (D and warp B are continuous), there is one yarn, but the presence of two or more yarns in the warp direction also increases the weight of the yarn per unit area, and the transpiration component. This is advantageous in increasing the amount of the retention. Thus, in order to allow two or more yarns to overlap in the warp direction, two or more yarns may be used as the warp yarns used in one row. For example, as shown in FIG. Of the two or more yarns, at least one yarn may be entangled with another warp yarn and at least one yarn may be run in the warp direction. Of course, the number of warp yarns arranged in the warp direction can also be increased by treating two or more yarns as, for example, one warp yarn in FIG.

  The form of lace knitting shown in FIG. 2 is a form in which the warps A to D are each changed to two warps (A1 and A2, B1 and B2, C1 and C2, D1 and D2) in the form shown in FIG. . That is, in FIG. 2, among the warps in each of the rows a to d, the warp A1 is entangled with the warp C1, the warp B1 is entangled with the warp D1, and two yarns overlap between the rows bc and cd. (In FIG. 2, illustration of the warp on the left side of row a and the warp on the right side of row d is omitted). In addition, among the warps of each row a to d, the warp A2, the warp B2, the warp C2, and the warp D2 run in the warp direction (arrow Y direction) along the row a, the row b, the row c, and the row d, respectively. Thus, two yarns are continuously overlapped in row c and row d. That is, in the form of lace knitting shown in FIG. 2, two warps are arranged in both the warp direction (arrow Y direction) and the weft direction (arrow X direction).

  Here, the two warp yarns (A1 and A2, B1 and B2, C1 and C2, D1 and D2) are (a) both of which are the same short fiber yarn or long fiber yarn, and (b) Any of the cases where one is a short fiber yarn and the other is a long fiber yarn may be used. In the case of (a), the warp may be combined with the combination of (a) to (c) described above. In the case of (b), two warps composed of a short fiber and a long fiber may be arranged for each row. Furthermore, a mode in which both (A) and (B) are combined is also possible. That is, of the two warps (A1 and A2, B1 and B2, C1 and C2, D1 and D2), two warps in any two rows are in the form of (a) above, and the other two When the two warp yarns in the row are in the mode (b), or the two warp yarns in any one row are in the mode (b) or (b), the two warp yarns in the other three rows In some cases, the warp yarns are two warp yarns having a different form from the one row.

  In the lace knitting form shown in FIG. 2, two yarns are used in each row. For example, three yarns are used, and two of them (short fiber yarn and / or long fiber yarn) are used. 2) so that the remaining one (short fiber yarn or long fiber yarn) is entangled with two warp yarns in between (warp yarn A1 in FIG. 2) Is changed so that the warp yarn D1 is entangled with the warp yarn D1, three warps are arranged in both the warp direction (arrow Y direction) and the weft direction (arrow X direction). Thus, the number of warp yarns arranged in the warp direction and the number of warp yarns arranged in the weft direction are the number of yarns used in each row, of which the number of warp yarns running in the warp direction and the warp yarns entangled with another warp yarn By adjusting the ratio to the number of yarns, and the position of another warp to be entangled (how many warps are to be entangled with each other), etc., it can be set as appropriate.

  It is preferable that the number of yarns arranged in the warp direction and the weft direction is larger as the amount of the transpiration component can be increased and the transpiration effect of the transpiration component can be continued for a long period of time. Then, the opening becomes small, and there is a risk that the transpiration of the transpiration component held in the yarn is lowered. Therefore, the number of yarns arranged in the warp direction and the weft direction is usually preferably about 1 to 5, respectively.

In the present invention, the ratio of the mesh openings (vent holes) is not particularly limited, but the ratio of the total area of the openings in the total area of the net is 10 to 80%, preferably 20 to 50%. Is good. If the opening ratio is too small, the transpiration of the transpiration component held in the thread may be reduced. On the other hand, if the opening ratio is too large, the weight of the thread per unit area (that is, the basis weight) is small. Therefore, the amount of transpiration component tends to decrease.
The width of the yarns arranged in the warp direction and the weft direction in the net is preferably 0.1 to 1 mm, more preferably 0.3 to 0.6 mm. If the width of the yarn is smaller than the above range, the amount of the transpiration component (drug) may be reduced. On the other hand, if it is larger than the above range, the opening may be small.

If the net weight (weight of the yarn per unit area) is too small, the amount of transpiration component (medicine) retained may be reduced, and conversely, if it is too large, transpiration may be reduced. Therefore, it is usually 50 to 500 g / m ² , preferably 50 to 250 g / m ² .
If the thickness of the net is too small, the amount of transpiration component (medicine) retained may be reduced. On the other hand, if it is too large, the transpiration property may be lowered. The thickness is preferably 0.3 to 1 mm.

  The transpiration component to be retained in the net is from various kinds of chemicals such as various pest control agents (insecticides, repellents, etc.), fragrances, deodorants / deodorants, fungicides, fungicides and the like that can evaporate at room temperature. However, it may be appropriately selected depending on the purpose, and is not particularly limited. Only one type of transpiration component may be used, or two or more types may be used.

  Examples of the pest control agents include various insecticides such as organic phosphorus, carbamate, and pyrethroids, repellents, insect growth regulators, and the like. Examples of pest control agents include, for example, organic phosphorus insecticides such as DDVP and diazinon, carbamate insecticides such as propoxer, and pyrethroid insecticides such as phthalthrin, praretrin, and tefluthrin. , Transfluthrin, metofluthrin, profluthrin, empentrin, teraleslin and the like. Of these, transfluthrin, metofluthrin, profluthrin, and empentrin are preferable. Other pest control agents include plant essential oils, terpenes, and isomers and derivatives thereof.

  Examples of the fragrance include, for example, jasong, dragon scent, abies oil, citronella oil, eucalyptus oil, fennel oil, garlic oil, ginger oil, grapefruit oil, lemon oil, lemongrass oil, nutmeg oil, peppermint oil, orange Essential oils such as oil, turpentine oil, sage oil, pinene, limonene, linalool, geraniol, citronellal, borneol, benzyl alcohol, anise alcohol, anethole, eugenol, aldehyde, citral, citronellal, crocodile, carvone, ketone, menthone, acetophenone, Examples include fragrances such as coumarin, cineol, ethyl acetate, octyl acetate, isopropyl isobutyrate, allyl caproate, ethyl benzoate, methyl cinnamate, and methyl salicylate.

  Examples of the deodorant / deodorant include benzyl acetate, benzyl propionate, amylcinnamic aldehyde, anisic aldehyde, diphenyl oxide, methyl benzoate, ethyl benzoate, methyl phenylacetate, ethyl phenylacetate, neoline, safrole, Citronella oil, lemongrass oil and the like can be mentioned.

  Examples of the disinfectant include hinokitiol, stabilized chlorine dioxide and the like.

  Furthermore, the transpiration component can contain various additives as long as it does not impair the effects of the present invention. Examples of the additive include an efficacy enhancer, a transpiration rate improver, and a stabilizer. Only one type of additive may be used, or two or more types may be used.

  Examples of the transpiration rate improver include phenethyl isothiocyanate and dimethyl himixate. Examples of the stabilizer include 3,5-di-t-butyl-4-hydroxytoluene, 3-t-butyl-4-hydroxyanisole, mercaptobenzimidazole, dilauryl-thio-di-propionate, and 2,2 ′. -Methylene-bis- (6-tert-butyl-4-methylphenol), 4,4'-methylene-bis- (2,6-di-tert-butylphenol), 4,4'-thio-bis- (6 -T-butyl-3-methylphenol), phenyl-β-naphthylamine, 2-t-butyl-4-methoxyphenol, stearyl-β- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, Examples include α-tocopherol, ascorbic acid, erythorbic acid, and the like.

  The method of obtaining the volatilized body by holding the transpiration component on the net is not particularly limited. For example, a solution is prepared by dissolving the transpiration component in a solvent, and the net is immersed in the solution to the net. A method of impregnating the transpiration component, a method of impregnating the transpiration component into the net by spraying or dripping the drug substance (the drug itself) as the solution or the transpiration component onto the net, etc. can be adopted. . Furthermore, if necessary, after impregnating the transpiration component, the solvent used by drying or the like may be removed. Moreover, each said operation at the time of hold | maintaining the said transpiration | evaporation component can be repeatedly performed until the holding | maintenance amount of a transpiration | evaporation component reaches a desired quantity.

  The solvent for preparing the solution of the transpiration component is not particularly limited. For example, hydrocarbons such as water, naphthene, kerosene, paraffin, glycerin, propylene glycol, methanol, isopropanol, 1-octanol, 1-dodecanol. Alcohols such as acetone, ketones such as acetophenone, ethers such as dihexyl ether and diethylene glycol diethyl ether, esters such as dioctyl adipate, diethyl malonate, diethyl phthalate, xylene, chlorocene, silicone oil, etc. Or 2 or more types are mentioned.

The amount of transpiration component (drug) retained in the volatilizer is appropriately determined so as to achieve a desired effect (transpiration or effective period), usually considering the type of the drug. At that time, in the transpiration material of the present invention, the amount of transpiration component (medicine) that can be retained per unit area is large, so the range of restrictions on the upper limit of the retention amount is wide and can be determined according to the purpose. . Specifically, in the transpiration material of the present invention, the transpiration component (drug) in an amount of about 300 g / m ^{2 at} maximum can be held per unit area.

  The transpiration material of the present invention includes the volatilized body, a cartridge-type frame body that holds the volatile body, and a storage body that has air permeability and detachably accommodates the frame body. preferable. If the cartridge type frame body and the storage body are provided in this way, for example, when the transpiration component is completely or almost completely evaporated and the efficacy is lost or reduced, the used frame body is replaced with a new sheet. By replacing it with a frame that holds the volatilization body, it is possible to express an excellent effect again. Moreover, when replacing the frame body, it is easy to attach and detach to the storage body with a single operation (one-touch). Yes. Hereinafter, an example of an embodiment provided with a cartridge type frame and a storage body will be described with reference to the drawings.

3 to 5 show the transpiration material of the above embodiment provided with a cartridge type frame and a storage body, and FIG. 6 shows a cartridge type frame housed in the transpiration material.
In the transpiration material shown in FIGS. 3 to 5, a cartridge-type frame body 2 holding the sheet-like volatile body 1 is accommodated in the storage body 3.
The storage body 3 includes a front surface portion 3a and a back surface portion 3b, and the vent holes 4 having the same shape are located at the same position on both the front surface portion 3a and the back surface portion 3b so as to maintain air permeability from the front surface toward the back surface. Is provided. By providing such a vent 4, it is possible to evaporate the transpiration component held from the vent port 4 to the sheet-like volatilization body 1. The shape of the vent 4 is secured ventilation between the front part 3a and rear part 3b, as long as the evaporation components can be efficiently transpiration it is not particularly limited and may be designed to any shape, transpiration when increasing the transpiration amount of the component, preferably the larger the total area of the vent hole 4.

The storage body 3 has a space portion 5 for storing the frame body 2 between the front surface portion 3a and the back surface portion 3b, and the frame body 2 is freely accessible from an opening 6 communicating with the space portion 5. Can be inserted and removed.
The space portion 5 is formed in such a size that at least a part of the frame body 2 just fits in the width direction and / or the thickness direction so that the stored frame body 2 does not easily come out. Instead of or in addition to setting the size of the space portion 5 to a size that allows the frame body 2 to be fitted, the frame body 2 and the storage body 3 (the front surface portion 3a and the back surface portion 3b) are provided. By providing the latching means 7 that detachably latches, it is possible to prevent the housed frame 2 from easily coming out.

  The front surface portion 3a and the back surface portion 3b constituting the storage body 3 may be integrally formed, or may be formed integrally with those formed as separate members. The material which comprises the storage body 3 (front surface part 3a and back surface part 3b) is not restrict | limited in particular, For example, it forms with various plastics, a metal, glass, paper, wood, ceramics, etc.

In FIG. 6, the frame body 2 sandwiches at least the periphery of the volatilization body 1 with two sheets of a front frame body 2 a and a back frame body 2 b. The front frame body 2a and the back frame body 2b are provided with a plurality of auxiliary frames 2 'connecting the both side surfaces at the same position. Furthermore, it is for preventing slack etc. from arising in the volatilization body 1 by pinching, and it can also abbreviate | omit. As in the case of providing the auxiliary frame 2 'it is not visible from the outside when housed in a position so as not to block the vent 4 (frame 2 in the housing body 3 when receiving the frame body 2 to the housing body 3 Provided).
Further, although not shown in FIG. 6, for example, support members that vertically connect the periphery of the frame body 2 corresponding to the upper side or the lower side and the auxiliary frame 2 ′ closest to the surrounding frame body 2 in the drawing are 1 to By providing about three, the torsional strength of the frame 2 can be improved. In addition, when such a support member is provided, for example, when a vaporized component is produced by dropping a vaporized component (medicine) in a state where the net is sandwiched between the frames 2 to produce a volatilized material, The transpiration component is dropped on a small area divided by the support member and the surrounding frame 2 or auxiliary frame 2 ', and the color of the net of this dropped part (separated part) and the other part of the net By using the difference (brightness and darkness) as a criterion, it is possible to easily grasp the degree of retention of the transpiration component and to obtain an effect of enabling efficient production.
Although there is no restriction | limiting in particular as a raw material which comprises the frame 2, For example, various plastics, a metal, glass, ceramics etc. are mentioned.

  In addition to the form shown in FIG. 6, the frame body 2 uses, for example, a single frame body provided with a locking member on one side, and the volatilizing body 1 is held by the locking member. There may be. However, when the frame body 2 is stored in the storage body 3, there is a gap that does not contact each other between the volatile body 1 held by the frame body 2 and the storage body 3 (the front surface portion 3 a and the back surface portion 3 b). Existence is desirable in order to prevent the transpiration of the transpiration component from being hindered. In consideration of this point, the size of the space portion 5 of the storage body 3 is set to a size in which the frame body 2 is fitted. For this, the form shown in FIG. 6 in which the frame bodies 2a and 2b having a thickness are disposed on both the front surface and the back surface of the volatilization body 1 is preferable.

  As mentioned above, although the transpiration material of the embodiment provided with the cartridge type frame and the storage body has been described, the transpiration material of the present invention is not limited to this, as long as the volatile material is provided with the volatile material. Needless to say, the design can be changed. That is, the volatilization body may be held in any state. For example, as illustrated in FIG. 7, the volatilization body 1 is directly held between a front surface portion 3a and a back surface portion 3b constituting the storage body 3. Alternatively, the volatile material itself may be used as a transpiration material.

  In the form shown in FIG. 7, the front surface portion 3a and the back surface portion 3b constituting the storage body 3 are formed as separate members, and the volatilizing body 1 is sandwiched between the sandwiching members 8a and 8b provided around the front and rear portions 3a and 3b, respectively. Integrated in a state. In addition to or in addition to sandwiching the volatilization body 1 around, a locking member (not shown) for locking the volatilization body 1 to at least one of the front surface portion 3a and the back surface portion 3b. Can also be provided. The front surface portion 3a and the back surface portion 3b are integrated by, for example, a method using a locking member, a method using heat fusion, a method using an adhesive, or the like.

In the form shown in FIG. 7, since it is not a cartridge type, it is not necessary to provide the space part 5 and the opening part 6 for accommodating the frame 2 in the accommodating body 3. FIG. However, as described above, the presence of a gap that does not contact each other between the volatilization body 1 and the storage body 3 (the front surface portion 3a and the back surface portion 3b) prevents the transpiration of the transpiration component from being hindered. Therefore, the front surface portion 3a and the back surface portion 3b constituting the storage body 3 are formed so that a gap is formed inside when integrated.
In addition, about the structural material of the accommodating body 3 (front surface part 3a and back surface part 3b) in the form shown in FIG. 7, and the vent hole 4, it is the same as that of the case of the form shown in FIGS.

  The method of using the transpiration material of the present invention is not particularly limited. For example, the transpiration material may be placed indoors or outdoors, suspended by a handle or attached to a pillar or wall surface. Or may be used. When used in this manner, for example, it is possible to simply perform fragrance, deodorization, etc. in a toilet or room. In addition, when the transpiration material of the present invention is flexible, for example, if it is suspended at the entrance of a building or an opening of a window or the like where a pest such as a mosquito or a moth invades, the control of the pest It is effective. Moreover, when using the transpiration | evaporation material of this invention, you may make it further improve the transpiration | evaporation property of a transpiration | evaporation component by ventilation, for example using ventilation means, such as an air blower and a fan.

  EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited to these examples.

(Examples 1-4)
As warp yarns, yarn (staple yarn) obtained by spinning polyethylene terephthalate short fibers (thickness 30 count, fiber length 51 mm) and polyethylene terephthalate long fibers (filament yarn number 50) yarn (filament yarn) ) And lace knitting nets.
That is, in the form of lace knitting shown in FIG. 2, the type and number of yarns used in each row (that is, either the staple yarn or the filament yarn), the number of warp yarns running in the warp direction, and different warp yarns. By changing the ratio of the number of warps to be entangled and the position of another warp to be entangled (how many warps are interlaced and entangled), a net (transpiration material) by lace knitting was produced.
Table 1 shows the amount of short fibers used, the total amount of fibers, and the ratio of short fibers in each example.

(Example 5)
A net was produced in the same manner as in Example 4 except that the same yarn as in Example 4 was used and lace knitting was performed so that the mesh opening was as small as possible. The net opening ratio obtained was 21%.

About each obtained net | network, the ratio (%) of opening, the total width (mm), the fabric weight (g / m < ² >), and thickness (mm) of the warp arranged in a weft direction and a warp direction were measured. The results are shown in Table 2.
The total width (mm) of each warp arranged in the weft and warp directions is 30 times larger than the surface of the obtained net using a digital microscope ("VHX-900", manufactured by Keyence Corporation). Measured based on the images taken. From this measured value and the number of warps and warps in the constant area (z), the opening area per fixed area (z) was calculated, and the ratio (%) of the opening was obtained according to the following formula. . The measurement was performed at any three locations on the entire net, and the average value was taken.
Aperture ratio (%)
= [Aperture area per constant area (z) / Constant area (z)] × 100
On the other hand, the thickness (mm) was measured using a thickness meter (“DIAL THICKNESS GAUGE”, manufactured by Ozaki Mfg. Co., Ltd.).

(Comparative Example 1)
A lace is produced in the same manner as in Examples 1 to 5 except that a multifilament (50 monofilaments) yarn (filament yarn), which is a long fiber of polyethylene terephthalate, is used as a warp without crimping. A knitted net was made.
About the obtained net | network, similarly to Examples 1-5, the ratio (%) of opening, the total width (mm) of the warp arranged in a weft direction and a warp direction, a fabric weight (g / m < ² >), thickness ( mm). The results are also shown in Table 2.

表２より、実施例１〜５で得られたネットは、いずれも比較例１で得られたネットよりも高い含浸許容量を有していることがわかる。 The meshes of the nets obtained in Examples 1 to 5 and Comparative Example 1 are schematically shown in FIGS. 8A to 8F. In either case, the stitches are composed of warp yarns 21 and weft yarns 22, and the openings serving as air holes are formed from warp yarns 21 and weft yarns 22. From these figures, the size of the mesh can be roughly understood. In FIG. 8E showing the mesh of Example 5, the warp 21 has a width (thickness) of 0.96 mm, the weft 22 has a weft 22a with a width (thickness) of 0.59 mm, and a width (thickness) of 1. .13 mm weft 22b.
Moreover, about each net | network obtained by the said Examples 1-5 and the comparative example 1, the liquid paraffin was assumed to be a chemical | medical agent and the impregnation tolerance was evaluated. That is, each net obtained was cut into a size of 10 cm × 10 cm, dried at 50 ° C. for 1 hour, and then the weight W1 of the net after drying was measured. Next, after the dried net was immersed in liquid paraffin for 10 minutes, an excessive amount of liquid paraffin was removed using a filter paper (No. 2), and the weight W2 of the net was measured again. The difference between the obtained weight W1 after drying and the weight W2 after impregnation was defined as the impregnation allowable amount (g) of the drug that can be held by the net. In addition, each measurement was performed 3 times and evaluated by the average value.
Table 2 shows the impregnation allowance (g) of each net obtained. Further, in order to facilitate the comparison of each net, the impregnation amount ratio (%) and the amount of drug retained per unit weight (g / g) were determined. The test results are shown in Table 2.
In addition, the impregnation amount ratio (%) was obtained by [Drug retention amount per unit weight of Comparative Example 1 (g / g) / Drug retention amount per unit weight of Example (g / g)] × 100 It is.

From Table 2, it can be seen that the nets obtained in Examples 1 to 5 all have a higher impregnation allowance than the net obtained in Comparative Example 1.

(Comparative Example 2)
A test sample was prepared in the same manner as in Examples 1 to 5 except that a PET nonwoven fabric having a basis weight of 63.8 g / m ² was used instead of the net.

(Comparative Example 3)
Test samples were prepared in the same manner as in Examples 1 to 5 except that an insect repellent mat (pulp base paper) having a basis weight of 357.8 g / m ² was used instead of the net.

(Volatilization test 1)
Using the samples such as nets obtained in Examples 1, 2, 4, and 5 and Comparative Examples 1, 2, and 3, a chemical volatilization test was performed according to the following procedure.
(a) The sample was cut into 165 mm × 85 mm and fixed to a frame 2 made of polyethylene terephthalate as shown in FIG.
(b) The sample was impregnated with 175 mg of a drug solution obtained by mixing 100 mg of metfurthrin and 75 mg of liquid paraffin 40S (manufactured by Chuo Kasei Co., Ltd.).
(c) After the drug solution diffused throughout the sample, it was hung in a well-ventilated outdoor space, and the sample was collected after 1, 3, 4 and 6 days.
(d) Quantitative analysis of the remaining drug was performed according to the following method.
(A) The collected sample was put in a stainless steel vat, and 5 mL of an internal standard solution was added.
(B) Toluene was added to such an extent that the whole was soaked, and the mixture was allowed to stand overnight to extract active ingredients, thereby obtaining a sample solution.
(C) Weigh accurately about 0.1 g of the standard methfluthrin and add 5 mL of the internal standard solution to make a standard solution.
(D) For each 1 μL of the sample solution and the standard solution, the respective peak area ratios were determined by gas chromatography, and methotrelin was quantified from the peak area ratios.
The test results are shown in Tables 3A and 3B. Tables 3A and 3B show the results of tests performed in different periods. Since the condition and temperature of the wind vary depending on the implementation period, the numerical values of Example 5 implemented in each period are also shown in order to make the measurement conditions uniform.

表３Ａ，３Ｂから明らかなように、実施例１，２，４，５では、比較例１で得られた長繊維糸からなるネットと同様に薬剤は安定した揮散パターンで揮散することが確認できた。一方、比較例２，３で用いた開孔部の無い不織布およびパルプ製原紙では、薬剤の揮散量が小さく、有効量の薬剤が放出されていない。
以上の結果から、本発明の蒸散材はネット面積あたりの薬剤含浸許容量が大きく、長期間にわたり、安定した薬剤揮散量を得られることがわかった。

As is clear from Tables 3A and 3B, in Examples 1, 2, 4, and 5, it can be confirmed that the chemicals volatilize in a stable volatilization pattern in the same manner as the net made of the long fiber yarn obtained in Comparative Example 1. It was. On the other hand, the non-perforated nonwoven fabric and pulp base paper used in Comparative Examples 2 and 3 have a small amount of chemical volatilization and an effective amount of chemical is not released.
From the above results, it was found that the transpiration material of the present invention has a large amount of drug impregnation per net area, and a stable drug volatilization amount can be obtained over a long period of time.

(Pest control efficacy test)
Using the nets obtained in Example 1 and Comparative Example 1, a pest control efficacy test against Culex pipiens was performed according to the following procedure.

[Sample]
(A) The net was cut into 165 mm × 85 mm and fixed to a frame 2 made of polyethylene terephthalate as shown in FIG.
(B) Prescription 1 in the prescription table shown in Table 5 was impregnated into the net of Example 1, and prescription 2 was impregnated into the net of Comparative Example 1 to prepare specimens.

Table 4 shows the test specimens used and Table 5 shows the prescriptions.

〔Test method〕
(A) As shown in FIG. 9, two 25 cm cubic stainless steel net cages 11 each having about 20 adult mosquitoes in four corners of an 8 tatami room model room 10 are 0.75 m from the floor surface. The remaining two were installed at a height of 1.5 m.
(B) The specimen 12 is placed at the center of the living room model room 10 at a height of about 0.5 m, and the wind of 0.1 meter / second is applied to the specimen by the fan 13 (40 mm × 40 mm small portable fan). I tried to hit it.
(C) The test was started simultaneously with the start of the fan 13, and the number of test insects knocked down (KD) was observed over time immediately after that. The test was performed in a non-ventilated condition and repeated twice.

  The test results are shown in FIG. As can be seen from FIG. 10, in the transpiration material provided with the volatilization body of the present invention, it was found that 100% of the test insects were knocked down after 120 minutes. That is, the sample A using the net of Example 1 is half the amount of active ingredient retained compared to the sample B of Comparative Example 1 (see Tables 4 and 5). Pest control effect equivalent to 1 is shown.

  From these results, it was found that in Sample A of Example 1, the active ingredient was volatilized from the sample over time, and the effective amount was released over time, and sufficient pest control effect was obtained.

Using the sample (sample C) obtained by impregnating the net of Example 1 with the prescription 3 shown in Table 5 and the sample (sample D) in which the sample C was suspended at the entrance of the building for one month, The insect pest control efficacy test was carried out against Culex pipiens.
100% of test insects were knocked down after 120 minutes for both Sample C and Sample D. That is, the sample using the net of Example 1 is hung at the entrance of the building for one month even in a state where the amount of active ingredient retained is larger than that of the comparative example (Example C). Even in a state where a considerable amount has been volatilized (Example D), the insect pest control effect equivalent to that of the sample using the net of Comparative Example 1 is shown.
From the above results, it can be seen that the sample using the net of Example 1 not only has a large amount of drug impregnation allowance compared with the sample of the comparative example, but also can provide a sufficient pest control effect in the initial stage of use for a long period of time. It was.

DESCRIPTION OF SYMBOLS 1 Volatile body 2 Frame body 3 Storage body 4 Ventilation hole 5 Space part 6 Opening part 7 Locking member 8 Holding member

Claims (4)

  A transpiration material provided with a volatile material holding a transpiration component, wherein the volatile material is composed of short fibers and long fibers and provided with air holes.   2. The transpiration material according to claim 1, wherein the volatilization body is a net made of short fibers and long fibers.   The transpiration material of Claim 1 or 2 whose ratio of the said short fiber and long fiber is short fiber: long fiber = 10: 90-80: 20 by weight ratio.   The transpiration | evaporation material in any one of Claims 1-3 further equipped with the frame which hold | maintained the said volatilization body, and the storage body which has air permeability and accommodated the said frame body so that attachment or detachment was possible.

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