Deodorizing fabrics, and industrial deodorizing fabrics

Abstract

The objective is to provide a deodorizing fabric that can be suitably used as a membrane material to be stretched over the ceilings and walls of industrial facilities such as livestock facilities, agricultural facilities, and waste treatment facilities, which has deodorizing performance that efficiently and effectively eliminates odor components, is lightweight, and has excellent mechanical properties and breathability, as well as an industrial deodorizing fabric. [Solution] A deodorizing sheet is provided in which a deodorizing functional agent is supported on a fabric using multifilaments made of thermoplastic resin as warp and / or weft threads, wherein the total fineness of the multifilaments is 500 dtex or more, the deodorizing functional agent is fixed to at least one surface of the fabric with a binder resin, and the basis weight is 100-500 g / m 2 The tensile strength is 1000N / 50mm or more, and the air permeability is 50cm 3 / cm 2 It is a deodorizing fabric with a temperature of / s or higher.

Description

[Technical Field]

[0001] This invention relates to textiles and industrial deodorizing textiles. [Background technology]

[0002] Traditionally, interior products such as tatami mats, carpets, and wallpaper installed in general residences and offices, as well as membrane materials applied to the ceilings and walls of industrial facilities such as livestock farms, agricultural facilities, and waste treatment facilities, have been made using sheets with deodorizing functions that adsorb and deodorize odor components such as odors and VOCs generated in each environment (hereinafter sometimes referred to as deodorizing sheets).

[0003] In recent years, with the increasing airtightness of homes and offices, odor components are less likely to diffuse outdoors and odors are less likely to disappear. Furthermore, given the strong demand for improved working environments for employees in industrial facilities, deodorizing sheets need to have the function of efficiently and effectively eliminating odor components. In addition, since deodorizing sheets used in industrial facilities are often installed individually on the ceilings and walls of each facility, they need to be lightweight, have excellent mechanical properties, and have good breathability to suppress odor retention.

[0004] Here, Patent Document 1 proposes an insert sheet for interior products in which an organic powder, from which at least a portion of essential oils and moisture has been removed from the woody parts and / or leaves of trees, is filled into a fibrous material such as a nonwoven fabric. Patent Document 2 also proposes a deodorizing fabric made of yarn with a resin coating layer having inorganic powders such as zinc oxide, alumina, and magnesium oxide. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] International Public Gazette No. 2021 / 107134 [Patent Document 2] Japanese Patent Publication No. 2017-66567 [Overview of the project]

Problems to be Solved by the Invention

[0006] In the method disclosed in the above-mentioned Patent Document 1, in order to obtain a sheet excellent in deodorizing performance suitable for an insert sheet for interior products, an organic powder from which at least a part of essential oil and moisture has been removed from the xylem and / or leaves of a tree is filled into fibrous materials such as non-woven fabrics, paper, woven fabrics, and knitted fabrics, and a deodorizing sheet has been proposed. This deodorizing sheet uses a deodorant composed of a low-density organic powder, and by setting the basis weight of the fibrous material to 10 to 300 g / m 2 a deodorizing sheet having excellent deodorizing performance, being lightweight, and having excellent air permeability has been obtained. However, the deodorizing sheet of this method is assumed to be used by inserting it into interior products such as tatami mats and carpets. The fineness of the yarns constituting the fibrous material is low, and it tends to be inferior in mechanical properties (tensile strength described in the examples: 8.5 to 39.0 N / 5 cm).

[0007] On the other hand, although the deodorizing sheet disclosed in Patent Document 2 is excellent in mechanical properties by using a woven fabric made of multifilaments with a thick fineness as a base material, since it uses an inorganic deodorant, there are problems such as a high basis weight and low air permeability. When it is stretched and used on the ceiling and walls of industrial facilities, the load on the structure increases, and at the same time, it is difficult for air to escape and odors tend to remain.

[0008] Therefore, in view of such problems, the present invention aims to provide a deodorizing fabric having a deodorizing performance that can efficiently and effectively deodorize odor components, being lightweight, and in addition, having excellent mechanical properties and air permeability, and being suitable for stretching on the ceiling and walls of industrial facilities.

Means for Solving the Problems

[0009] In order to solve such problems, the present invention is a deodorizing fabric and an industrial deodorizing fabric that adopt the following configuration. That is, (1) A deodorizing sheet comprising a fabric in which a deodorizing functional agent is supported on a fabric using multifilaments made of thermoplastic resin as warp and / or weft threads, wherein the total fineness of the multifilaments is 500 dtex or more, the deodorizing functional agent is fixed to at least one surface of the fabric with a binder resin, and the basis weight is 100 to 500 g / m 2 The tensile strength is 1000N / 50mm or more, and the air permeability is 50cm 3 / cm 2 Deodorizing fabrics that are / s or higher, (2) The deodorizing fabric of (1) in which the deodorizing functional agent is the residue obtained by removing at least a portion of the essential oils and moisture from the woody parts and / or leaves of a tree. (3) The deodorizing fabric of (1) wherein the value obtained by dividing the content of the deodorizing functional agent by the content of the binder resin is 0.3 to 4.0. (4) The deodorizing fabric of (1) wherein the proportion of the deodorizing functional agent exposed on at least one surface of the deodorizing fabric is 20% or more. (5)(1) This is an industrial deodorizing fabric using the deodorizing fabric described in (1). [Effects of the Invention]

[0010] The present invention aims to provide a deodorizing fabric that has deodorizing properties that efficiently and effectively eliminate odor components, is lightweight, and also has excellent mechanical properties and breathability, making it suitable for being stretched over ceilings and walls of industrial facilities. [Modes for carrying out the invention]

[0011] The present invention relates to a deodorizing fabric, which is a deodorizing sheet in which a deodorizing functional agent is supported on a fabric using multifilaments made of thermoplastic resin as warp and / or weft threads, wherein the total fineness of the multifilaments is 500 dtex or more, the deodorizing functional agent is fixed to at least one surface of the fabric with a binder resin, and the basis weight is 100 to 500 g / m². 2 The tensile strength is 1000N / 50mm or more, and the air permeability is 50cm 3 / cm 2The value is 1 / s or more. Furthermore, the industrial deodorizing fabric of the present invention is intended to be stretched over the ceilings and walls of various industrial facilities such as livestock facilities, agricultural facilities, and waste treatment facilities to reduce odors, and it is preferable that the above-described deodorizing fabric is applied.

[0012] The deodorizing fabric of the present invention utilizes a fabric in which multifilaments with a total fineness of 500 dtex or more are used in at least one of the warp and / or weft threads, resulting in excellent mechanical properties. The deodorizing function is achieved by a deodorizing functional agent fixed to the fabric via a binder resin. Furthermore, by optimizing the fabric weight, the amount of deodorizing functional agent / binder resin attached, etc., it is possible to achieve the above-mentioned range for weight, tensile strength, and breathability, resulting in a lightweight deodorizing fabric with excellent mechanical properties and breathability. Therefore, industrial deodorizing fabrics using the deodorizing fabric of the present invention are lightweight and have excellent mechanical properties and breathability, making them suitable for installation on ceilings and walls of industrial facilities.

[0013] The details of the present invention will be described below in order.

[0014] <Textiles> The fabric of the deodorizing fabric of the present invention will now be described. In the present invention, the fabric serves as the base material for the deodorizing fabric of the present invention, and at least one of the warp and / or weft threads is made of a thermoplastic resin multifilament with a total fineness of 500 dtex or more. The details will be described below in order.

[0015] (1) Multifilament The multifilaments in the deodorizing fabric of the present invention must have a total fineness of 500 dtex or more. By having a total fineness of 500 dtex or more, the mechanical properties (i.e., tensile strength) of the fabric using these multifilaments become excellent, and the deodorizing fabric using these fabrics also has excellent mechanical properties. From the viewpoint of achieving excellent mechanical properties, there is no particular upper limit, but a fineness of 2000 dtex or less is preferable because it results in a fabric that is flexible and easy to handle.

[0016] This multifilament is preferably made by bundling single filaments with a fineness of 5.0 to 20.0 dtex into untwisted or twisted yarns, and its cross-sectional shape may be circular, elliptical, or flattened. Furthermore, the polymer of the filaments, i.e., the single filaments constituting the multifilament, must be a thermoplastic resin. Specifically, examples include polyolefin, polyester, nylon, vinylon, etc., and one or more of these may be used, but polyester, which has low moisture absorption and excellent quick-drying properties, is preferred for installation on ceilings and walls of industrial facilities.

[0017] (2) Textile composition The fabric of the present invention must use the above-mentioned multifilament for at least one of the warp or weft threads, and preferably for both the warp and weft threads. By using the above-mentioned multifilament with the above-mentioned total fineness, a fabric with excellent mechanical properties is obtained. The weave structure may be plain weave, twill weave, satin weave, etc., but plain weave is preferred as it has many intersections between the multifilaments and is excellent in mechanical properties, durability, abrasion resistance, etc. Furthermore, there are no particular limitations on the weave density, but it is preferably 10 to 50 threads / inch. It may be set appropriately according to the multifilament used and the required characteristics of the fabric.

[0018] (3) Fabric properties The fabric of the present invention is a component that serves as a base material, and its properties greatly affect the basis weight and mechanical properties (i.e., tensile strength) of the deodorizing fabric. Therefore, the total fineness of the multifilaments, weave density, etc. should be appropriately determined to match the required properties of the deodorizing fabric, taking into account the changes in properties when the binder resin / deodorizing functional agent is fixed. Here, the changes in properties when the binder resin / deodorizing functional agent is fixed refer to the fact that the basis weight increases with the amount of binder resin / deodorizing functional agent fixed, the tensile strength tends to increase by coating with binder resin, and the air permeability tends to decrease as the binder resin / deodorizing functional agent fills the voids in the fabric. From the above viewpoint, basis weight: 50~450g / m 2 Tensile strength: 800N / 50mm or more, Air permeability: 100cm3 / cm 2 It is preferable to use a fabric of / s or more.

[0019] <Deodorant functional agent> The deodorant functional agent of the present invention plays a role of adsorbing and deodorizing odor components, and by being fixed to at least one surface of the fabric via a binder resin, it imparts deodorizing properties to the deodorant fabric. From the viewpoint of obtaining a deodorant fabric with excellent deodorizing performance, it is preferably fixed to both sides of the fabric. The deodorant functional agent used in the present invention can be selected and used from one or more of inorganic powders such as zinc oxide, aluminum oxide, magnesium oxide, titanium oxide, activated carbon obtained by carbonizing trees such as coconut shells, pine, and bamboo, and organic powders made of materials such as trees and plants. Among these deodorant functional agents, it is preferable to use an organic powder with a lower specific gravity compared to the inorganic powder in order to reduce the weight of the deodorant fabric. Furthermore, among the organic powders, it is preferable to use residues from which at least a part of essential oil and moisture has been removed from the xylem and / or leaves of trees. These residues become solid substances with a porous structure by removing a part of the essential oil and moisture, and since a part of the remaining essential oil is difficult to volatilize, they have the function of adsorbing and deodorizing odor components over a long period of time. There is no particular limitation on the trees used for the deodorant functional agent of the present invention, but at least one or more selected from the genera Chamaecyparis, Quercus, Pinus, Cryptomeria, Abies, Picea, Tsuga, Eucalyptus, Myrica, Castanopsis, and Alnus of the family Pinaceae may be used. Particularly preferred tree raw materials include Chamaecyparis obtusa, Taiwan Chamaecyparis obtusa, and Bay Chamaecyparis; Cryptomeria japonica; Abies nephrolepis and Abies firma; Eucalyptus; Myrica rubra; and Alnus sieboldiana. These tree raw materials are widely distributed in Japan and are preferably used because they are easily available.

[0020] Furthermore, the essential oil contained in the residue from which at least a portion of the essential oil and water of the present invention has been removed preferably contains components such as monoterpenes and sesquiterpenes, and more preferably contains at least one component selected from α-pinene, β-pinene, camphene, santen, tricyclene, β-caryophyllene, myrcene, allocimene, isoprene, ocimene, pyronene, cryptotenene, β-phellandrene, 2,4(8)-p-mentadiene, menogerene, sesxitronene, zingiberene, sabinene, 3,8(9)-p-mentadiene, terpinen-4-ol, citronellal, bornyl acetate, α-terpineol, δ-3-carene, terpinolene, γ-terpinene, and 1,8-cineole. The essential oils mentioned above all have low volatility or are non-volatile, and therefore possess the function of adsorbing and deodorizing odor components over a long period of time.

[0021] The amount of this deodorizing agent applied is determined to be 1 to 50 g / m², from the perspective of obtaining a lightweight deodorizing fabric with excellent deodorizing performance. 2 Preferably, it is 5-20 g / m 2 It is even more preferable to do so. Furthermore, the average particle size of the deodorizing agent is preferably 1 to 300 μm. This can be appropriately selected considering the amount of binder resin and its dispersibility in the binder resin.

[0022] <Binder resin> The binder resin of the present invention serves to fix a deodorizing functional agent to at least one surface of a fabric and contributes to improving the mechanical properties of the fabric. Examples of binder resins used in the present invention include acrylic resin, urethane resin, EVA resin, PVA resin, etc., and one or more of these can be selected and used. Of these binders, it is preferable to use acrylic resin, which has excellent weather resistance, from the viewpoint of use in industrial facilities.

[0023] In this invention, the binder resin plays the role of fixing the deodorizing functional agent to the fabric, and the deodorizing functional agent plays the role of adsorbing and deodorizing odor components. From the above viewpoint, if the amount of binder resin is small, the deodorizing functional agent will not be fixed sufficiently and will fall off. On the other hand, if the amount of binder resin is large, the deodorizing functional agent will be buried in the binder resin and will not exhibit deodorizing performance, so the amount of deodorizing functional agent relative to the binder resin is important. In this invention, as an indicator, a value obtained by dividing the content of the deodorizing functional agent by the content of the binder resin is used, and this value is preferably 0.3 to 4.0, more preferably 0.5 to 3.0, and even more preferably 1.0 to 2.0. By setting the amount of deodorizing functional agent relative to the binder resin within the above range, the fall-off of the deodorizing functional agent is suppressed while achieving excellent deodorizing performance.

[0024] In the present invention, the deodorizing functional agent exhibits a fast-acting and highly selective deodorizing effect by directly contacting odor molecules. Therefore, the deodorizing functional agent exhibits a higher deodorizing effect when it is not embedded in the binder resin, that is, when it is exposed on the surface of the deodorizing fabric without being covered by the binder resin. Furthermore, the greater the total amount of exposed deodorizing functional agent per unit area of ​​the surface of the deodorizing fabric, the better the fast-acting and highly selective deodorizing effect becomes. In the present invention, as an indicator of the total amount of exposed deodorizing functional agent per unit area, the percentage of the deodorizing functional agent exposed on at least one surface of the deodorizing fabric is adopted, and this percentage is preferably 20% or more, and more preferably 30% or more. In this specification, the "percentage of the deodorizing functional agent exposed on at least one surface of the deodorizing fabric" may be referred to as the "degree of exposure of the deodorizing functional agent." As a method for confirming that the deodorizing functional agent is exposed on at least one surface of the deodorizing fabric, a method is employed in which the deodorizing functional agent is extracted from scanning electron microscope (SEM) images by brightness values. More specifically, this refers to the measurement method described in the section on measurement methods in the examples.

[0025] <Deodorizing fabric> Next, the deodorizing fabric of the present invention will be described. As described above, the deodorizing fabric of the present invention has a structure in which a deodorizing functional agent is fixed to the fabric via a binder resin. From the viewpoint of making the deodorizing fabric of the present invention lightweight, having excellent mechanical properties and breathability, and suitable for being stretched on the ceilings and walls of industrial facilities, it is necessary to set the basis weight, tensile strength, and breathability within specific ranges. These will be explained in order below.

[0026] (1) Inspection The maximum weight of this deodorizing fabric is 500g / m². 2 The following is required: 400g / m 2 Preferably, it is 300g / m² 2 The following is more preferable: a basis weight of 500g / m². 2 The following measures will make it sufficiently lightweight. Furthermore, when installed on the ceilings and walls of industrial facilities, it reduces the load on the structure, which is desirable. Additionally, when using fibers of the same specific gravity, a lower basis weight results in a thinner thickness, improving handling. The upper limit for the basis weight is 400g / m². 2 Below, an additional 300g / m 2 The effect becomes more pronounced by following the guidelines below. On the other hand, the lower limit of the basis weight is 100g / m². 2 The above is a requirement, and 200g / m 2 It is more preferable that the weight be 100g / m². 2 This allows the mechanical properties to be maintained, making it less likely for damage such as tearing or cutting to occur when stretched, and also improving durability. The lower limit of the basis weight is 200g / m 2 This makes the effect more pronounced.

[0027] (2) Tensile strength The tensile strength of this deodorizing fabric must be 1000N / 50mm or higher. In this invention, a tensile strength of 1000N / 50mm or higher means that either the MD direction or the TD direction is 1000N / 50mm or higher, and it is preferable that both the MD direction and the TD direction are 1000N / 50mm or higher. For example, when stretched on a wall, stress equivalent to the weight of the deodorizing fabric is applied from the ceiling direction to the floor direction, so it is sufficient if the tensile strength of either direction is equal to or greater than the above value. When stretched on a ceiling, stress is applied in both directions, so the weave design should be such that the tensile strength of both the MD and TD directions is equal to or greater than the above value. A higher tensile strength makes the deodorizing fabric less prone to damage, so there is no upper limit to the tensile strength. However, increasing the tensile strength requires the use of thicker multifilaments, so from the viewpoint of weight reduction, it is preferable that the tensile strength is 3000N / 50mm or less.

[0028] <Air permeability> The breathability of the deodorizing fabric of the present invention is 50 cm. 3 / cm 2 It is essential that it is at least / s and 100cm 3 / cm 2 It is preferable that the value be 50cm or higher. Air permeability is an indicator of how easily air passes through, and in this invention, it is a numerical value that indicates how easily air passes through the deodorizing fabric. Air permeability is 50cm 3 / cm 2 By setting the air permeability to 100 cm² or higher, this deodorizing fabric becomes sufficiently airy, preventing odors from accumulating. In addition, its resistance to wind is reduced, making it less susceptible to being blown around by the wind and thus less prone to damage. 3 / cm 2 This effect becomes more pronounced when the value is set to / s or higher.

[0029] <Deodorizing performance> The odor-eliminating fabric of the present invention has odor-eliminating properties due to the inclusion of the above-mentioned odor-eliminating functional agent. Specifically, it has the function of deodorizing odors such as ammonia, hydrogen sulfide, methyl mercaptan, acetic acid, and isovaleric acid, and VOCs such as toluene and aldehydes, and is preferably excellent in its function of deodorizing ammonia, hydrogen sulfide, and methyl mercaptan.

[0030] The deodorizing performance of the deodorizing fabric of the present invention preferably has a deodorizing rate of 60% or more. In the present invention, the deodorizing rate is an index that indicates how much odor gas such as ammonia has been removed or reduced. More specifically, it refers to the rate measured by the method described in the section on measurement methods in the examples. By using the above deodorizing fabric as an industrial deodorizing fabric, it is possible to obtain a fabric with excellent deodorizing performance that effectively deodorizes. From the above viewpoint, the deodorizing rate of the deodorizing fabric is more preferably 70% or more, even more preferably 80% or more, and particularly preferably 90% or more. Needless to say, the higher the deodorizing rate, the better, and a deodorizing rate of 100% is most preferable. As a means of obtaining such performance, for example, one can use the materials described in Example 1, etc., and adopt the manufacturing method described in Example 1, etc. The deodorizing rate of the deodorizing fabric can be brought within the above range by optimizing the weaving density, the amount of deodorizing functional agent / binder resin attached, the exposure ratio of the deodorizing functional agent, etc.

[0031] <Manufacturing method> Next, the method for manufacturing the deodorizing fabric of the present invention will be described. A coating solution containing a deodorizing functional agent and a binder resin is applied to the fabric by known methods such as spraying, dipping, or coating, and then dried to obtain a deodorizing fabric in which the deodorizing functional agent is fixed to at least one surface of the fabric. This deodorizing fabric has the above-mentioned basis weight, tensile strength, and breathability, and can be suitably used on the walls and ceilings of industrial facilities. [Examples]

[0032] The present invention will be described in more detail below using examples. The method for measuring the characteristic values ​​shown in these examples is as follows.

[0033] <Total fineness of multifilaments> (1)Measurement method Cross-sections of multifilaments constituting woven or deodorizing fabrics were photographed using a scanning electron microscope SU3800 (manufactured by Hitachi, Ltd.), and the number of filaments and filament diameters constituting the multifilament were measured. The total fineness of the multifilament was calculated by multiplying the number of filaments by the fineness of the filament, which was calculated from the filament diameter and the specific gravity of the resin constituting the filament. In the case of polyester, the specific gravity was 1.38 g / cm³. 3 I used it. (2) Measurement conditions • Magnification: Any (magnification sufficient to fit one multifilament thread in the frame) n: 5.

[0034] <Inspector> (1) Referenced standards JIS L1096:1999 (A method) (2)Measurement method Measure the mass (g), 1m 2 Mass per unit (g / m³) 2 It was converted to ). (3) Measurement conditions • Size: 200mm x 200mm n: 2.

[0035] <Tensile strength> (1) Referenced standards JIS L1096:1999 (Strip method) (2)Measurement method The tensile strength in the MD direction (unwinding method) and TD direction (width direction) was measured using the "Autograph AG-50KNG (manufactured by Shimadzu Corporation)". (3) Measurement conditions Width: 50mm • Grip spacing: 100mm • Tensile speed: 300 mm / min n: MD5, TD5.

[0036] <Air permeability> (1) Referenced standards JIS L1096:1999 (Fragile method) (2)Measurement method The air permeability of the test specimen was measured using the "Air Permeability Tester FX3300 (manufactured by Textest Co., Ltd.)". It was measured. (3) Measurement conditions • Size: 200mm x 200mm • Pressure: 125 Pa ·Measurement area: φ38mm n: 5.

[0037] <Deodorizing performance> (1)Measurement method The test specimens were placed in a 10L airtight bag filled with NH3 gas (ammonia) (NH3 concentration: 18 ppm), and the NH3 gas concentration was measured using a detector tube after 1 hour. (2) Measurement conditions • Size: 290 x 210 mm • Detector tube: Gastec gas detector tube No. 3 (3) Deodorization rate The deodorization rate (%) was calculated by multiplying the difference between the initial concentration of NH3 gas and the residual concentration of NH3 gas (after 1 hour) by the initial concentration by 100.

[0038] <Degree of exposure of deodorizing agent> The surface of the deodorizing fabric was scanned using a scanning electron microscope (SEM) SU3800 (manufactured by Hitachi, Ltd.) at 500x magnification, and five locations were selected where there were no voids. Next, each of the five obtained SEM images was processed as an 8-bit grayscale image, and the brightness value (0-255) of each pixel was obtained. Next, areas where the brightness value exceeded a certain value were extracted as the exposed areas of the deodorizing functional agent. The threshold value for the brightness value was set to the value that maximized the contrast with the background (deodorizing fabric) based on the histogram distribution of the entire image. Next, the area ratio of the high-brightness areas to the total area of ​​the observation area was calculated. That is, the area ratio was calculated by dividing the total area of ​​the exposed areas of the deodorizing functional agent by the total area of ​​the observation area in the SEM image and multiplying the resulting value by 100. The above area ratio was calculated for each of the five SEM images, and the average of the area ratios was taken as the percentage (%) of the deodorizing functional agent exposed on at least one surface of the deodorizing fabric of the present invention, i.e., the degree of exposure of the deodorizing functional agent.

[0039] <Evaluation of deodorizing properties, breathability, and wind resistance in field tests> In early June, odor-eliminating fabrics (25m x 2m each) were installed in a curtain-like manner at the ventilation openings (20m x 1m each) on both sides of a livestock barn (12m wide x 30m long x 2.5m high) in Saga Prefecture.

[0040] <<Evaluation of deodorizing properties in field tests>> A sensory evaluation (6-point odor intensity scale and pleasant / unpleasantness scale) was conducted on five subjects to assess the deodorizing effect before and after application. The evaluation was considered effective if four or more of the five subjects showed an improvement of at least one level before and after application. The 6-point odor intensity scale is a method of evaluating odor intensity on a 6-point scale from odorless (0) to very strong odor (5). The pleasant / unpleasantness scale was also evaluated on a similar scale. A rating of "Excellent" indicated effectiveness, while a rating of "Poor" indicated otherwise.

[0041] <<Evaluation of breathability in field tests>> Furthermore, regarding breathability (the degree to which odors accumulate), the deodorizing fabric of the present invention and a non-breathable material (vinyl sheet) were each stretched over a vent, and subjects sensory-based comparative evaluations of the degree of odor accumulation and ventilation conditions were conducted on-site. When the subjects judged that there was less odor accumulation and better ventilation when the deodorizing fabric of the present invention was stretched compared to when the non-breathable material was stretched, it was evaluated as "excellent breathability," or "superior," and when this was not the case, it was evaluated as "inferior." <<Evaluation of wind resistance in field tests>> Regarding wind resistance (resistance to being blown around), we observed whether the deodorizing fabric was blown around or detached by the wind at the site. If sufficient natural wind could not be obtained due to weather or site conditions, we used a fan or other blower to artificially blow air onto the deodorizing fabric at a wind speed of approximately 2 to 5 m / s and checked whether the fabric was blown around or detached. If the deodorizing fabric was held stably even under the blown air and no detachment or significant shaking was observed, it was evaluated as having "excellent wind resistance," i.e., "superior." Otherwise, it was evaluated as "inferior." It should be noted that materials such as deodorizing fabrics that are blown around or detached by the wind can cause stress to livestock being raised there and may have an adverse effect on their growth, so they are considered unsuitable.

[0042] [Example 1] (1)Textures This fabric uses polyester multifilament (8.6 dtex x 96 threads) with a total fineness of 830 dtex for both warp and weft threads, is plain woven at a density of 33 x 33 threads / inch, and has a weight of 230 g / m². 2 A polyester fabric was obtained. (2) Deodorizing agents The residue used was obtained from the woody tissue and / or leaves of the fir tree, from which at least some of the essential oils and moisture had been removed. (3) Deodorizing fabric The fabric was dipped in a processing solution containing a deodorizing agent and an acrylic resin binder, and then dried to obtain a deodorizing fabric with the deodorizing agent fixed to it. The amount of deodorizing agent attached to this deodorizing fabric was 15 g / m². 2 The amount of acrylic resin binder adhering to the surface is 15 g / m². 2 The weight of the deodorizing fabric is 260g / m². 2 That was the case.

[0043] Table 1 shows the results of evaluating each characteristic value of the deodorizing fabric of Example 1 using the measurement method described above.

[0044] This plain weave fabric uses polyester multifilament (8.6 dtex x 96 threads) with a total fineness of 830 dtex for both warp and weft, and is woven at a density of 33 x 33 threads / inch, resulting in a weight of 230 g / m². 2Using a polyester fabric as the base material, 15 g / m² of residue obtained from the woody and / or leafy parts of the fir tree, from which at least some of the essential oils and moisture have been removed, is used as a deodorizing functional agent. 2 , acrylic resin binder 15g / m 2 Example 1, in which the ratio of deodorizing agent to binder resin was 1.0, had a basis weight of 260 g / m². 2 Tensile strength (MD / TD): 2037 / 2015N / 50mm, Air permeability: 110cm 3 / cm 2 The fabric was lightweight, with excellent mechanical properties and breathability, and possessed deodorizing properties. Furthermore, a deodorizing test was conducted, and the NH3 concentration after 1 hour was 0 ppm (deodorization rate: 100%), indicating excellent deodorizing performance. The exposure rate of the deodorizing functional agent on at least one side of the deodorizing fabric was 32%. As described above, the deodorizing fabric of Example 1 is lightweight and has excellent mechanical properties, breathability, and deodorizing performance, making it a suitable deodorizing fabric for industrial applications.

[0045] Furthermore, the deodorizing fabric of Example 1 was subjected to the field tests described above. The results are similarly shown in Table 1. It demonstrated deodorizing effects and also exhibited excellent breathability and wind resistance.

[0046] [Example 2] Amount of deodorizing agent applied to this deodorizing fabric: 5g / m 2 The amount of acrylic resin binder adhering to the surface is 10 g / m². 2 A deodorizing fabric was obtained in the same manner as in Example 1, except that the ratio of deodorizing functional agent to binder resin was changed to 0.5.

[0047] Table 1 shows the results of evaluating each characteristic value of the deodorizing fabric of Example 2 using the measurement method described above.

[0048] Furthermore, the deodorizing fabric of Example 2 was subjected to the field tests described above. The results are similarly shown in Table 1. It demonstrated deodorizing effects and also exhibited excellent breathability and wind resistance.

[0049] [Example 3] Amount of deodorizing agent applied to this deodorizing fabric: 5g / m 2 The amount of acrylic resin binder adhering to the surface is 15 g / m². 2 A deodorizing fabric was obtained in the same manner as in Example 1, except that the ratio of deodorizing functional agent to binder resin was changed to 0.3.

[0050] Table 1 shows the results of evaluating each characteristic value of the deodorizing fabric of Example 3 using the measurement method described above. In this example, evaluation of deodorizing properties, breathability, and wind resistance in field tests was not performed.

[0051] [Example 4] Amount of deodorizing agent applied to this deodorizing fabric: 5g / m 2 The amount of acrylic resin binder adhering to the surface is 25 g / m². 2 A deodorizing fabric was obtained in the same manner as in Example 1, except that the ratio of deodorizing functional agent to binder resin was changed to 0.2.

[0052] Table 1 shows the results of evaluating each characteristic value of the deodorizing fabric of Example 4 using the measurement method described above. In this example, evaluation of deodorizing properties, breathability, and wind resistance in field tests was not performed.

[0053] [Example 5] The amount of deodorizing agent applied to this deodorizing fabric is 10 g / m². 2 The amount of acrylic resin binder adhering to the surface is 5g / m². 2 A deodorizing fabric was obtained in the same manner as in Example 1, except that the ratio of deodorizing functional agent to binder resin was changed to 2.0.

[0054] Table 2 shows the results of evaluating each characteristic value of the deodorizing fabric of Example 5 using the measurement method described above. In this example, evaluation of deodorizing properties, breathability, and wind resistance in field tests was not performed.

[0055] [Example 6] Amount of deodorizing agent applied to this deodorizing fabric: 5g / m 2 The amount of acrylic resin binder adhering to the surface is 5g / m². 2A deodorizing fabric was obtained in the same manner as in Example 1, except that the ratio of deodorizing functional agent to binder resin was changed to 1.0.

[0056] Table 2 shows the results of evaluating each characteristic value of the deodorizing fabric of Example 6 using the measurement method described above. In this example, evaluation of deodorizing properties, breathability, and wind resistance in field tests was not performed.

[0057] [Example 7] (1)Textures This fabric uses polyester multifilament (8.6 dtex x 67 threads) with a total fineness of 580 dtex for both warp and weft threads, woven in a plain weave at a density of 33 x 33 threads / inch, with a weight of 150 g / m². 2 A polyester fabric was obtained. (2) Deodorizing agents The same equipment as in Example 1 was used. (3) Deodorizing fabric The amount of deodorizing agent applied to this deodorizing fabric is 10 g / m². 2 The amount of acrylic resin binder adhering to the surface is 10 g / m². 2 A deodorizing fabric was obtained in the same manner as in Example 1, except that the ratio of deodorizing functional agent to binder resin was changed to 1.0.

[0058] Table 2 shows the results of evaluating each characteristic value of the deodorizing fabric of Example 7 using the measurement method described above. In this example, evaluation of deodorizing properties, breathability, and wind resistance in field tests was not performed.

[0059] [Example 8] (1)Textures Plain weave with a weave density of 38 x 38 threads / inch, weight 280 g / m 2 A polyester fabric was obtained in the same manner as in Example 1, except that the following change was made. (2) Deodorizing agents The same equipment as in Example 1 was used. (3) Deodorizing fabric A deodorizing fabric was obtained in the same manner as in Example 2.

[0060] Table 2 shows the results of evaluating each characteristic value of the deodorizing fabric of Example 8 using the measurement method described above.

[0061] Furthermore, the deodorizing fabric of Example 8 was subjected to the field tests described above. The results are similarly shown in Table 2. It exhibited deodorizing effects and also had excellent breathability and wind resistance.

[0062] [Comparative Example 1] (1)Textures This fabric uses polyester multifilament (8.6 dtex x 48 threads) with a total fineness of 413 dtex for both warp and weft threads, woven in a plain weave at a density of 66 x 66 threads / inch, with a weight of 75 g / m². 2 A polyester fabric was obtained. (2) Deodorizing agents The same equipment as in Example 1 was used. (3) Deodorizing fabric A deodorizing fabric was obtained in the same manner as in Example 2.

[0063] Table 3 shows the results of evaluating each characteristic value of the odor-eliminating fabric of Comparative Example 1 using the measurement method described above.

[0064] Comparative Example 1 has a basis weight of 90 g / m². 2 Tensile strength (MD / TD): 715 / 700N / 50mm, Air permeability: 150cm 3 / cm 2 A deodorizing test was conducted at / s, and the result showed that the NH3 concentration after 1 hour was 5 ppm (deodorization rate: 72%), indicating that it was a deodorizing fabric. The exposure rate of the deodorizing functional agent on at least one side of the deodorizing fabric was 18%. As described above, the deodorizing fabric of Comparative Example 1 was lightweight and had excellent breathability and deodorizing performance, but it had poor mechanical properties and was unsuitable for industrial use. In this example, evaluation of deodorizing performance, breathability, and wind resistance in field tests was not performed.

[0065] [Comparative Example 2] (1)Textures This fabric uses polyester multifilament (8.6 dtex x 96 threads) with a total fineness of 320 dtex for both warp and weft threads, is plain woven at a density of 42 x 42 threads / inch, and has a weight of 320 g / m². 2 A polyester fabric was obtained. (2) Deodorizing agents The same equipment as in Example 1 was used. (3) Deodorizing fabric A deodorizing fabric was obtained in the same manner as in Example 2.

[0066] Table 3 shows the results of evaluating each characteristic value of the odor-eliminating fabric of Comparative Example 2 using the measurement method described above.

[0067] Furthermore, the deodorizing fabric of Comparative Example 2 was subjected to the field tests described above. The results are similarly shown in Table 3. Although it had a deodorizing effect, its breathability and wind resistance were inferior.

[0068] [Table 1]

[0069] [Table 2]

[0070] [Table 3]

[0071] Here, we compared the deodorizing fabrics of Examples 1 to 8 with the deodorizing fabric of Comparative Example 1. Focusing on the basis weight, total fineness of the multifilaments, and tensile strength, the deodorizing fabric of Comparative Example 1 had extremely low basis weight and total fineness of the multifilaments, as well as extremely low tensile strength. In contrast, the deodorizing fabrics of Examples 1 to 8 had moderately low basis weight, moderately high total fineness of the multifilaments, and moderately high tensile strength. As a result, the mechanical properties of the deodorizing fabrics of Examples 1 to 8 are superior to those of the deodorizing fabric of Comparative Example 1, making them suitable and superior for industrial applications.

[0072] The deodorizing fabrics of Examples 1-8 were compared with the deodorizing fabric of Comparative Example 2. Focusing on breathability, the deodorizing fabric of Comparative Example 2 had low breathability. In contrast, the deodorizing fabrics of Examples 1-8 had moderately high breathability. Therefore, it can be said that the deodorizing fabrics of Examples 1-8 are superior to Comparative Example 2 in terms of reducing odor retention and wind resistance when installed in livestock barns, etc.

[0073] Furthermore, to confirm the effect of the amount of deodorizing agent relative to the binder resin and the degree of exposure of the deodorizing agent on the deodorization rate, Examples 2 to 6 were compared, in which the binder resin content, the deodorizing agent content, the ratio of binder resin content to deodorizing agent content, and the degree of deodorizing agent exposure were varied. Examples 5 and 6, which had a higher content and degree of exposure of the deodorizing agent, showed a higher deodorization rate compared to Examples 2 to 4, which had a higher amount of binder resin, and can be said to have superior deodorizing performance. [Industrial applicability]

[0074] The deodorizing fabric of the present invention is a fabric that has deodorizing performance that efficiently and effectively deodorizes odor components, is lightweight, and in addition has excellent mechanical properties and breathability, making it suitable for use as a membrane material to be stretched over the ceilings and walls of industrial facilities such as livestock facilities, agricultural facilities, and waste treatment facilities.

Claims

1. A deodorizing sheet is provided in which a deodorizing functional agent is supported on a fabric using multifilaments made of thermoplastic resin as at least one of the warp or weft threads, The total fineness of the multifilament is 500 dtex or more. The deodorizing functional agent is fixed to at least one surface of the fabric with a binder resin. The weight is 100-500 g / m ２ And, The tensile strength is 1000 N / 50 mm or more. The breathability is 50 cm. ３ / cm ２ A deodorizing fabric with a density of / s or higher.

2. The deodorizing fabric according to claim 1, wherein the deodorizing functional agent is the residue obtained by removing at least a portion of the essential oils and moisture from the woody parts and / or leaves of a tree.

3. The odor-eliminating fabric according to claim 1, wherein the value obtained by dividing the content of the odor-eliminating functional agent by the content of the binder resin is 0.3 to 4.

0.

4. The deodorizing fabric according to claim 1, wherein the proportion of the deodorizing functional agent exposed on at least one surface of the deodorizing fabric is 20% or more.

5. An industrial deodorizing fabric using the deodorizing fabric described in claim 1.

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