JP2010260045A - Skin material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a skin material having an excellent deodorizing effect. <P>SOLUTION: The skin material 10 includes a filler layer 12 and a skin layer 11 laminated on the one side of the filler layer 12 containing impregnated activated carbon 122. Further, the filler layer 12 may contain non-impregnated activated carbon 123. The impregnated activated carbon 122 may contain at least one among an impregnated activated carbon (b) for adsorbing an aldehyde, an impregnated activated carbon (c) for adsorbing an acidic gas and an impregnated activated carbon (d) for adsorbing a basic gas. Further, the skin material may include a backing layer 13 on the other side of the filler layer 12. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a skin material, and more particularly, to a skin material having deodorizing properties.

In recent years, due to the improvement of airtightness in automobile vehicles and indoors, it tends to be difficult to obtain a deodorizing action that has been performed by switching between outside air and inside air, and it is possible to deodorize odors in automobile vehicles and indoors. It is desired.
Conventionally, a tufting carpet in which a deodorizing action or an antibacterial action is imparted to a sealing layer is known (Patent Document 1 below).

JP 2008-206802 A

However, there are cases where it is difficult to obtain a sufficient deodorizing effect with conventional techniques. That is, for example, in the conventional technique, there is a problem that ventilation in the front and back directions of the carpet is required, and a sufficient function is hardly exhibited in the carpet that does not have ventilation in the front and back directions. Furthermore, even when there is ventilation in the front and back direction, a more excellent deodorizing effect is required.
This invention is made | formed in view of the prior art, and it aims at providing the skin material which can exhibit the deodorizing effect more excellent compared with the past.

The present invention is as follows.
<1> A skin material comprising a sealing layer and a skin layer laminated on one side of the sealing layer,
A skin material, wherein the sealing layer includes impregnated activated carbon.
<2> The skin material according to <1>, wherein the sealing layer further includes non-attached activated carbon (a).
<3> The impregnated activated carbon contains at least one of an impregnated activated carbon for aldehyde adsorption (b), an impregnated activated carbon for acid gas adsorption (c), and an impregnated activated carbon for basic gas adsorption (d). > Or <2>.
<4> The skin material according to <3>, wherein the impregnated activated carbon contains the aldehyde-adsorbed activated carbon (b) and the acidic gas-adsorbed activated carbon (c).
<5> The skin material according to any one of <1> to <4>, further including a backing layer on the other surface side of the sealing layer.
<6> Among the above <1> to <5>, the skin layer includes a base fabric layer, an adhesive layer, and a sound absorbing layer in this order, and the sound absorbing layer is laminated on one surface side of the sealing layer. A skin material according to any one of the above.
<7> The skin material according to <5>, wherein the backing layer includes a plurality of layers.

According to the skin material of the present invention, excellent deodorizing properties can be obtained.
When the sealing layer further contains non-attached activated carbon (a), not only a single odor but also an excellent deodorizing effect even if odor components such as tobacco odor and body odor are complex. Can demonstrate.
When the impregnated activated carbon contains at least one of the impregnated activated carbon for aldehyde adsorption (b), the impregnated activated carbon for acid gas adsorption (c), and the impregnated activated carbon for basic gas adsorption (d), Not only the odor but also the odor components such as cigarette odor and body odor can be combined to exhibit an excellent deodorizing effect.
When the impregnated activated carbon contains the aldehyde adsorbed activated carbon (b) and the acidic gas adsorbed activated carbon (c), not only a single odor but also odor components such as tobacco odor and body odor are complex. Even if it is a thing, it can exhibit an excellent deodorizing effect.
Even in the case where a backing layer is further provided on the other surface side of the sealing layer, according to the skin material of the present invention, an excellent deodorizing effect can be obtained. In particular, even when the backing layer is non-breathable, an excellent deodorizing effect can be obtained by using both non-added activated carbon and impregnated activated carbon.
When the skin layer includes a base fabric layer, an adhesive layer, and a sound absorbing layer in this order, and the sound absorbing layer is laminated on one surface side of the sealing layer, the deodorizing characteristics according to the present invention are sufficiently obtained. In addition, a sound absorbing effect can be obtained.

It is sectional drawing which shows an example of the skin material of this invention typically. It is sectional drawing which shows the other examples of the skin material of this invention typically. It is sectional drawing which shows the other examples of the skin material of this invention typically. It is sectional drawing which shows the other examples of the skin material of this invention typically.

  The skin material 10 of the present invention is a skin material provided with a sealing layer 12 and a skin layer 11 laminated on one side of the sealing layer 12, and the sealing layer 12 includes an impregnated activated carbon 122. Features.

  The “skin layer (11)” is a layer constituting the skin portion of the present skin material, and is usually a fiber layer capable of forming a raised state on the surface thereof. The structure of the skin layer is not particularly limited, and for example, tufted cloth (see reference numeral 11 in FIGS. 1 and 3), non-woven fabric (see reference numeral 11 in FIGS. 2 and 4), woven fabric, knitted fabric, and the like can be used.

  Among these, as illustrated in FIG. 1, the tufted cloth is a cloth (carpet) formed by tufting a pile yarn 112 on a base cloth (base cloth layer) 111. Further, as illustrated in FIG. 3, a cloth (carpet) obtained by tufting a pile yarn 112 on the base fabric 111 and other layers may be used. Examples of the other layer include a sound absorbing layer, a heat insulating layer, and a cushion layer. These layers may be used alone or in combination of two or more layers. In addition, these layers can interpose an adhesive layer in order to bond the layers.

The kind of the base fabric 111 which comprises the said tuft cloth is not specifically limited, Although various nonwoven fabrics and various woven fabrics can be used, a nonwoven fabric is preferable and also a spun bond is preferable. Furthermore, the material is not particularly limited, and examples thereof include polyester, polyamide, and polyolefin. Polyester is preferable. That is, the base fabric 111 is preferably a polyester spunbonded nonwoven fabric. The basis weight when the base fabric 111 is spunbond is not particularly limited, but is preferably 50 to 150 g / m ^{2, and} more preferably 80 to 120 g / m ² .

  On the other hand, as the pile yarn, a loop pile whose tip is a loop, a cut pile whose tip is cut, and the like can be used. These may use only 1 type and may use 2 or more types together. Furthermore, it is preferable that the tip of the pile yarn on the side opposite to the outer skin protrudes in a U-shape on the side of the sealing layer as illustrated in FIGS. 1 and 3. Thereby, it can be reliably sealed by the sealing layer and the pile yarn can be effectively prevented from falling off. Moreover, the material of the pile yarn is not particularly limited, and examples thereof include polyester, polyamide, polyolefin, and the like, and polyamide is preferable.

Further, when the skin layer 11 (the base fabric 111 in the case where the skin layer 11 is composed of a plurality of layers) is composed of a nonwoven fabric (see FIGS. 2 and 4), the nonwoven fabric may be any nonwoven fabric. Good. Moreover, a more effective raised state (for example, velor tone etc.) can be formed and used by punching a nonwoven fabric with a needle. Furthermore, the material is not particularly limited, and examples thereof include polyester, polyamide, and polyolefin. Polyester is preferable. That is, a polyester needle punched nonwoven fabric is preferred. Furthermore, a twin needle punch nonwoven fabric in which two nonwoven fabrics are laminated and needle punched can be used. When the base fabric 111 is a nonwoven fabric, the fineness of the constituent fibers of the nonwoven fabric is not particularly limited, but is preferably 2.2 to 17 dtex (particularly, 6.6 to 11 dtex).
In addition, hook carpets, stepped carpets, and the like can also be used.

  In addition, as illustrated in FIG. 4, in the case where the skin layer 11 is composed of a plurality of layers while using a nonwoven fabric (nonwoven fabric without pile yarn) as the base fabric 111, other than the base fabric 111 As the layer, a sound absorbing layer, a heat insulating layer, a cushion layer, or the like can be used. These layers may be used alone or in combination of two or more layers. Furthermore, these layers can intervene an adhesive layer to bond the layers.

A sound absorbing layer 113 (see FIGS. 3 and 4) that can be used as a part of the skin layer 11 is a layer for absorbing sound. The structure of the sound absorbing layer is not particularly limited as long as the sound absorbing property can be exhibited. For example, a polyester nonwoven fabric subjected to needle punching can be used. In particular, the fineness of the nonwoven fabric fibers is preferably 2.2 to 17 dtex, particularly 6.6 to 11 dtex, in order to exhibit sound absorbing properties.
The adhesive layer is a layer for interposing these two layers by interposing between the two layers. Examples of the adhesive layer include a layer made of only an adhesive, a layer formed by applying an adhesive to a breathable film, and a heat-sealing layer (a layer made of a thermoplastic resin or the like melted between two layers by heating). ) And the like. These layers may use only 1 type and may use 2 or more types together. In addition, the adhesive layer may be a hole formed by tufting to allow ventilation, and therefore an adhesive may be applied to a non-breathable film.

The “sealing layer” is a layer that contains the impregnated activated carbon 122 and eyes the fibers constituting the skin layer. The sealing layer is not particularly limited as long as it contains impregnated activated carbon and can seal the skin layer. In order to exhibit both of these characteristics, the organic polymer component 121 is usually included. .
Although the organic polymer component 121 is not particularly limited, for example, acrylic resin, urethane resin, polyvinyl chloride resin, polyethylene, polypropylene, ethylene-vinyl acetate copolymer (EVA) resin, SBR (styrene-butadiene rubber), Examples of the rubber component include NBR (acrylonitrile-butadiene rubber) MBR (methyl methacrylate-butadiene rubber) and natural rubber. Of these, acrylic resins are preferred. These organic polymer components may be used alone or in combination of two or more.

  Further, the organic polymer component 121 may be included in the sealing layer in any form, but in order to exhibit the adsorption characteristics of the impregnated activated carbon included in the sealing layer more effectively, It has preferable air permeability (porosity). Although this air permeability may be given in any way, for example, by making it in a foamed state, an open cell structure is obtained, while sufficiently exerting a sealing function for the fibers constituting the skin layer, Aeration can be obtained, and the impregnated activated carbon contained in the sealing layer can function more effectively.

The formation method of the sealing layer is not particularly limited, but usually, a dispersion in which the organic polymer component 121 and the impregnated activated carbon 122 are dispersed and contained in a dispersion medium is applied to the back side of the skin layer using various application methods. Thereafter, the dispersion medium is removed (dried). In addition, the dispersion can be subjected to pH adjustment to improve the dispersion state of the dispersoid as necessary. Further, an anti-settling agent for suppressing the impregnated activated carbon from settling in the dispersion can be blended. The coating method is not particularly limited, and can be formed by various methods such as a roll coater, a bar coater, spray coating, and dipping.
Further, the coating amount (coating amount) is not particularly limited, in terms only by solids of the dispersion, preferably ^{5~200g / m 2, 50~100g / m} 2 is more preferable.
The kind of the dispersion medium of the dispersion is not particularly limited, and an organic dispersion medium may be used, but an aqueous dispersion medium is preferably used, and water is particularly preferable.

Furthermore, as described above, since the sealing layer in the present invention preferably has air permeability, a dispersion containing an organic polymer component and an impregnated activated carbon is foamed (in the form of a mousse) and applied. Is preferred. Thereby, a porous sealing layer is formed and air permeability is obtained, so that the impregnated activated carbon disposed inside the sealing layer can function more effectively. Although the expansion ratio in the case of foaming is not particularly limited, it is usually preferably 2 times or more and more preferably 4 to 9 times. Here, the expansion ratio, the specific gravity of the dispersoid before foaming (minus the dispersion medium from the dispersion) and D _A, the specific gravity of the sealing layer with a value of D _{B /} D _A in the case where a D _B is there.

The “impregnated activated carbon” is activated carbon to which various functional components are attached. By the addition of the functional component, in addition to the adsorption action due to the pore structure inherent to the activated carbon, the adsorbed component can be retained for a long period of time and the adsorbed component can be decomposed. Also, impregnated activated carbon is preferable in that the adsorbate is not re-released by heating compared to non-impregnated activated carbon.
The type of activated carbon constituting the impregnated activated carbon is not particularly limited. That is, for example, activated carbon activated by a known method using coconut shell, sawdust, coal, charcoal, resin, or the like as a raw material can be used. Among these, activated carbon derived from a coconut shell is preferable from the viewpoint of a large specific surface area and a large amount of pore distribution with a diameter of 2 nm or less (a pore diameter distribution is preferable). The form is not particularly limited, and activated carbon such as powder, crushed, and fiber can be used. However, since the surface area is preferably larger and smaller, powdered activated carbon is preferable.

  The particle size of the activated carbon (the same applies to the particle size in the impregnated activated carbon) is not particularly limited, but is preferably 1 to 300 μm, more preferably 30 to 100 μm. In this range, it is difficult to coat with the organic polymer component, and the falling off of the activated carbon particles can be sufficiently suppressed, and the impregnated activated carbon can be functioned more effectively.

  Furthermore, various kinds of impregnated activated carbons are known depending on their functions, but in the skin material of the present invention, aldehyde adsorbed activated carbon (b), acidic gas adsorbed activated carbon (c), and basic gas adsorbing impregnation. It is preferable to contain at least one of activated carbon (d).

  The impregnated activated carbon (b) for aldehyde adsorption is an impregnated activated carbon that adsorbs aldehyde. Examples of aldehydes include acetaldehyde, formaldehyde, butyraldehyde, and propionaldehyde. Among these, it is particularly preferable that the adsorption ability for acetaldehyde is high. The constitution of the activated carbon for aldehyde adsorption is not particularly limited, but an activated carbon in which a compound having a —NH— structure in the molecule (hereinafter referred to as “aldehyde-adsorbing component”) is preferred.

  Examples of the aldehyde adsorbing component having the —NH— structure include hydroxylamine, chloramine, ammonia, methanolamine, ethanolamine, dimethylamine, diethylamine, isopropylamine, butylamine, proline, hydroxyproline, dicyanodiamide, ethyleneimine, ethylenediamine, and propylene. Diamine, diethylenetriamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, 1,2-diaminopropane, 1,3-diaminopropane, triethylenetetramine, tetraethylenepentamine, iminobispropylamine, tetramethylenediamine, guanidine carbonate, Glycine, alanine, sarcosine, glutamic acid, hexamethylenediamine, melamine, morpholine, 2-amino-4,5-di Anoimidazole, 3-azahexane-1,6-diamine, hexamethylenediamine, 2-acrylamido-2-methylpropanesulfonic acid, α-amino-ε-caprolactam, acetoguanamine, guanine, acetaldehyde ammonia, 4,7-diazadecane- 1,10-diamine, pyrrolidine, piperidine, piperazine, polyethyleneimine, polyallylamine, polyvinylamine, aminobenzoate, thiourea, methylurea, ethylurea, dimethylurea, diethylurea, ethyleneurea, acetylurea, guanylurea, Guanylthiourea, azodicarbonamide, glycolyl urea, acetyl urea, formamide, acetamide, benzamide, oxamide, pyrrolidone, pyrrolidone carboxylic acid, oxamic acid, succinic acid amide, di Anjiamido, oxazolidone, malonamide, succinimide, phthalimide, maleimide, succinimide, hydantoin, barbituric acid, 1-methylol-5,5-dimethylhydantoin, isocyanuric acid, such as aniline. These may use only 1 type and may use 2 or more types together. Among these, an aldehyde adsorbing component having an amino group is preferable, and it is particularly preferable that morpholine, aniline, ethylene urea and piperazine are contained as the aldehyde adsorbing component.

  The impregnated activated carbon for acid gas adsorption (c) is an impregnated activated carbon that adsorbs acid gas. Examples of the acid gas include acetic acid, hydrogen sulfide, mercaptan, butyric acid, and the like. Among these, it is particularly preferable that the adsorption capacity for acetic acid is high. The structure of the impregnated activated carbon for acid gas adsorption is not particularly limited, but alkali metal halides and alkali metal salts are preferable, and alkali metal halides are more preferable. Examples of the alkali metal constituting the alkali metal halide include Na, K, and Li, and among these, K is preferable. Examples of the halogen constituting the alkali metal halide include bromine and iodine, and iodine is preferable. On the other hand, examples of the alkali metal salt include sodium hydroxide and potassium hydroxide. These components may use only 1 type and may use 2 or more types together.

  The impregnated activated carbon (d) for adsorbing basic gas is an impregnated activated carbon that adsorbs basic gas. Examples of the basic gas include ammonia, trimethylamine and pyridine. Among these, it is particularly preferable that the adsorption capacity for ammonia is high. The configuration of the impregnated activated carbon for adsorbing basic gas is not particularly limited, but an impregnated activated carbon impregnated with an acidic substance is preferable. Examples of the acidic substance include water-soluble acid components (components that are acidic when dissolved in water, phosphoric acid, sulfuric acid, and the like). These components may use only 1 type and may use 2 or more types together.

  These impregnated activated carbon for aldehyde adsorption (b), impregnated activated carbon for acid gas adsorption (c), and impregnated activated carbon for basic gas adsorption (d) may be used in any combination, but among these, at least, It is more preferable to contain two kinds of activated carbon for aldehyde adsorption (b) and activated carbon for acid gas adsorption (c). Furthermore, when the impregnated activated carbon for aldehyde adsorption (b) and the impregnated activated carbon for acid gas adsorption (c) are used in combination, the activated carbon (d) for adsorbing basic gas can be used.

  As described above, the filler layer is preferably formed from a dispersion containing an organic polymer component and an impregnated activated carbon. The dispersion of the dispersion may be maintained depending on the pH. In such a case, the dispersion state of the dispersion is better maintained by using an impregnated activated carbon with little fluctuation in pH. it can. From this viewpoint, the pH of activated carbon alone is preferably 6-9. The impregnated activated carbon (b) and the impregnated activated carbon (c) are preferable because the pH is easily maintained at 6 to 9 when mixed with the dispersion, and the dispersion state of the dispersion can be further maintained. On the other hand, the impregnated activated carbon (d) contains the impregnated activated carbon (d) because it tends to make the pH of the dispersion more acidic (less than pH 6). Can not be.

Moreover, when pH changes with the mixing | blending of the said impregnated activated carbon, pH adjustment can be performed. As pH adjustment, when adjusting pH to the acidic side, citric acid, phosphoric acid, sulfuric acid, hydrochloric acid, etc. can be used. These may use only 1 type and may use 2 or more types together. On the other hand, when adjusting the pH to the basic side, sodium hydroxide, magnesium hydroxide, potassium hydroxide, ammonia or the like can be used. These may use only 1 type and may use 2 or more types together.
In addition, a surfactant can be blended in order to improve the dispersibility of the dispersion. Anionic, cationic, nonionic and amphoteric surfactants can be used as the surfactant. These may use only 1 type and may use 2 or more types together. Furthermore, in order to adjust the viscosity of the dispersion, a thickener can be blended. By adjusting the viscosity of the dispersion, the degree of penetration into the skin layer can be adjusted.

Moreover, it is preferable that the sealing layer in this invention contains non-impregnated activated carbon (a) in addition to the said impregnated activated carbon (b)-(d).
The “non-impregnated activated carbon” is the activated carbon that serves as a base material for the impregnated activated carbon. That is, for example, activated carbon activated by a known method using coconut shell, sawdust, coal, charcoal, resin, or the like as a raw material can be used. Among these, activated carbon derived from a coconut shell is preferable from the viewpoint of a large specific surface area and a large amount of pore distribution with a diameter of 2 nm or less (a pore diameter distribution is preferable). The form is not particularly limited, and activated carbon such as powder, crushed, and fiber can be used. However, since the surface area is preferably larger and smaller, powdered activated carbon is preferable. Furthermore, the preferable particle size is the same as that in the impregnated activated carbon.

  Furthermore, the blending ratio of the organic polymer component {particularly the solid content in the dispersion (latex)} and the impregnated activated carbon is not particularly limited, but the impregnated activated carbon can be 10 to 90% by mass. % By mass is preferable, 30 to 70% by mass is more preferable, and 30 to 50% by mass is particularly preferable. In the preferred range, the impregnated activated carbon can be effectively fixed in the sealing layer and the impregnated activated carbon can function effectively while reducing the ratio of the surface of the impregnated activated carbon covered with the organic polymer component. it can. In particular, in the more preferable range and the particularly preferable range, the effect is remarkably obtained.

  Moreover, when using the said impregnated activated carbon and the said impregnated activated carbon together, the sum total of non-added activated carbon and an impregnated activated carbon shall be 100 mass%, and the ratio of an impregnated activated carbon is preferable 10-90 mass%, and 20-80 mass% Is more preferable, and 50 to 75 mass% is particularly preferable. In the preferable range, rerelease by heat can be suppressed, and furthermore, a wide range of components that cannot be adsorbed by non-impregnated activated carbon can be adsorbed. In particular, in the more preferable range and the particularly preferable range, the effect is remarkably obtained.

  The skin material of the present invention can have other configurations in addition to the skin layer and the sealing layer. Another configuration includes a backing layer (symbol 13 in FIGS. 1 to 4). The backing layer is a layer disposed on the other surface side (back surface side) of the sealing layer, functions as a sound insulation layer that blocks sound from the other surface side, and further improves shape retention. be able to. Further, this backing layer may consist of only one layer or a plurality of layers. The multilayered backing layer may be composed of any number of layers, but is usually 2 to 5 layers, more preferably 2 to 3 layers. In the case of a plurality of layers, each layer can have a different function.

  The material of the backing layer is not particularly limited, but can be formed of resin, elastomer, rubber, or the like. Thereby, it can be set as the skin material excellent in sound insulation. The resin is preferably a thermoplastic resin. Examples of the thermoplastic resin include polyolefin resins and polyvinyl chloride resins. These may use only 1 type and may use 2 or more types together. Of these, polyolefin resins are preferred, polyethylene is more preferred, and low density polyethylene is particularly preferred. Excellent sound insulation can be exhibited while having sufficient strength, flexibility and processability. Examples of the elastomer include olefin-based thermoplastic elastomers, styrene-based thermoplastic elastomers, urethane-based thermoplastic elastomers, polyester-based thermoplastic elastomers, and polyamide-based thermoplastic elastomers. These may be used alone or in combination of two or more. Furthermore, examples of the rubber include butadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, natural rubber, isoprene rubber, and chloroprene rubber. These may be used alone or in combination of two or more.

  This backing layer may have air permeability, but is preferably a layer that does not have air permeability. As a result, in addition to the excellent sound insulation properties, waterproof properties can be obtained, and a rust prevention effect can be exhibited. Further, when the backing layer is composed of a plurality of layers, it is preferable that at least one layer is the air-impermeable layer. Furthermore, when the backing layer is composed of a plurality of layers, at least one of them can be formed of a nonwoven fabric or the like.

[Example 1] Evaluation using a deodorant (1) Preparation of a deodorant A non-added activated carbon and each of the attached activated carbons were mixed so that the formulation shown in Table 1 (total amount of activated carbon was 100% by mass). Thus, mixed activated carbon AC1 to AC3 was obtained.

The following products were used as the activated carbons.
Activated carbon (a); manufactured by Nippon Enviro Chemicals Co., Ltd., product name “Shirakaba G2c”
Activated carbon (b); manufactured by Nippon Enviro Chemicals Co., Ltd., product name “Shirakaba GAA”
Activated carbon (c); manufactured by Nippon Enviro Chemicals Co., Ltd., product name “Shirakaba GS3”
Activated carbon (d); manufactured by Nippon Enviro Chemicals Co., Ltd., product name “Shirakaba GTs”

(2) Deodorization test (Experimental examples 2 to 4)
Each 0.1 g of the deodorizer (mixed activated carbon AC1 to AC3) obtained in (1) was charged into a petri dish having a diameter of 30 mm × t10 mm. On the other hand, the test gases {acetaldehyde (single gas), acetic acid (single gas), ammonia (single gas), tobacco combustion gas (composite gas)} shown in Table 2 are each 4 liters (temperature 35 ° C.) in a volume of 10 liters. Gas bag (manufactured by GL Sciences Inc.). Then, the petri dish is introduced into the gas bag, and the concentration of each test gas in the gas bag in the state immediately after the petri dish is put and the lid of the petri dish is closed is a detection tube type measuring instrument (manufactured by Gastec Co. ). Thereafter, the concentration of each test gas 4 hours after opening the petri dish lid was similarly measured using a detector tube type measuring instrument. For the measurement of each test gas, a detector tube corresponding to each test gas described in Table 2 was used. The results are also shown in Table 2.

Experimental Example 1 is a test performed in the same manner as Experimental Examples 2 to 4 except that the petri dish was not put into the gas bag.
Furthermore, the “single gas test” in Table 2 is a test conducted by individually injecting the test gas described in each column into the gas bag. On the other hand, the “tobacco gas test” is a test conducted by injecting 4 liters of gas obtained by burning 1/2 cigarette in a 100 liter box into the gas bag. In the tobacco gas test, four types of detector tubes corresponding to acetaldehyde, acetic acid, ammonia and pyridine described in Table 2 were used.

  Furthermore, in this deodorization test, sensory evaluation by five persons was performed, and the average value of the results was calculated and shown in Table 2. This sensory evaluation is an evaluation in which each person sniffs the odor emitted from the gas bag and performs odor evaluation according to the following criteria. 5; very strong odor (strong odor at the initial concentration), 4; strong odor, 3; easily perceived odor, 2; weak odor that identifies which odor is 1; very weak and finally perceptible odor, 0; odorless (The smell cannot be detected.)

(3) Coagulation test with mixed activated carbon Each of the mixed activated carbons AC1 to AC3 is added to and mixed with latex (acrylic resin aqueous emulsion, solid content concentration 50 mass%, pH 8.5), and the mixed activated carbon and latex are mixed. An aqueous dispersion containing was prepared. The blending of each mixed activated carbon and latex was such that the total amount of the mixed activated carbon and the solid content of the latex was 100 mass%, the mixed activated carbon was 40 mass%, and the solid content of the latex was 60 mass%.
As a result, the pH of the aqueous dispersion containing the mixed activated carbon AC1 is 9.5, the pH of the aqueous dispersion containing the mixed activated carbon AC2 is 8.5, and the pH of the aqueous dispersion containing the mixed activated carbon AC3 is 1.5. became. The dispersibility of the solid content of the aqueous dispersion containing the mixed activated carbon AC1 and the aqueous dispersion containing the mixed activated carbon AC2 was excellent. On the other hand, in the aqueous dispersion containing the mixed activated carbon AC3, aggregation of the mixed activated carbon AC3 was observed, and the dispersibility became unstable. The aqueous dispersion containing the mixed activated carbon AC3 was adjusted to pH by adding sodium hydroxide, and the excellent dispersibility could be recovered by bringing the pH close to pH 8.5.

From the results of (2) and (3), it is higher in Experimental Example 3 (AC2) and Experimental Example 4 (AC3) using impregnated activated carbon than in Experimental Example 2 (AC1) using only non-implanted activated carbon. A deodorizing effect was obtained. In particular, in the measurement using the detector tube, the experimental example 3 (AC2) and the experimental example 4 (AC3) differed in the concentrations of ammonia in the single gas test and ammonia and pyridine in the tobacco gas test. That is, Experimental Example 4 (AC3) showed an excellent deodorizing effect compared to Experimental Example 3 (AC2). However, in sensory evaluation, Experimental Example 3 (AC2) and Experimental Example 4 (AC3) had the same value.
In Experimental Example 3 (AC2), it is not necessary to adjust the pH in mixing the mixed activated carbon and latex, but in Experimental Example 4 (AC3), it is necessary to adjust the pH. Experimental example 3 (AC2), which showed excellent results in evaluation, is superior to the other experimental examples in the balance between simplicity in the production process and deodorizing effect.

[Example 2] Evaluation Using skin material (1) skin material CP1 Nipan nonwoven production basis weight 350 g / m ² (Comparative product) (was brushed surface by needle punching) to the skin layer. Application of 100 g / m ² of solid content in terms of solid content with a roll coater, foamed latex (acrylic resin water-based emulsion, solid content concentration 50 mass%) foamed on the back surface (side not brushed) of this skin layer Coated in quantity. Then, it dried at 170 degreeC for 5 minutes, the sealing layer was formed, and the laminated body by which the sealing layer was laminated | stacked on the back surface side of the skin layer was obtained. On the sealing layer side of this laminate, an olefin-based resin is directly extruded into a film using a T-die melt extruder and roll-bonded, followed by cooling to form a non-breathable backing layer. The surface material CP1 (without front and back ventilation) was obtained.

(2) Manufacture of skin material CP2 (implemented product) On the back surface of the same skin layer as (1) above, the water dispersion prepared in Example 1 (3) {water dispersion containing mixed activated carbon AC2, solid content concentration 35 mass%)} is foamed with a roll coater, and the coating amount is 100 g / m ² in terms of solid mass (ie, the latex solid content is 60 g / m ² and the mixed activated carbon is 40 g / m ^2). Coating). Then, it dried at 170 degreeC for 5 minutes, the sealing layer was formed, and the laminated body by which the sealing layer was laminated | stacked on the back surface side of the skin layer was obtained. A non-breathable backing layer was formed on the side of the laminate of the laminate in the same manner as in (1) above to obtain a skin material CP2 (no airflow on the front and back sides) of the present invention.

(3) Manufacture of skin material CP3 (practical product) On the back surface of the same skin layer as in (1) above, the water dispersion prepared in Example 1 (3) {water dispersion containing mixed activated carbon AC3, solid content concentration 35 mass%)} is foamed with a roll coater, and the coating amount is 100 g / m ² in terms of solid mass (ie, the latex solid content is 60 g / m ² and the mixed activated carbon is 40 g / m ^2). Coating). Then, it dried at 170 degreeC for 5 minutes, the sealing layer was formed, and the laminated body by which the sealing layer was laminated | stacked on the back surface side of the skin layer was obtained. A non-breathable backing layer was formed on the side of the laminate of the laminate in the same manner as (1) to obtain a skin material CP3 of the present invention (without front and back breathing).

(4) Manufacture of skin material CP4 (implemented product) Water dispersion prepared in Example 1 (3) on the back surface of skin layer 11 formed by tufting (floating) pile yarn 112 on the base fabric layer 111 A foamed latex obtained by foaming {mixed activated carbon AC3 containing water dispersion, solid content concentration 35% by mass)} is coated with a roll coater at a solid content mass conversion of 60 g / m ² (ie, the latex solid content is 30 g / m ² ). m ² and the mixed activated carbon was applied at a conversion of 30 g / m ² ). Then, it was made to dry for 5 minutes at the temperature of 170 degreeC, the sealing layer 12 was formed, and the laminated body by which the sealing layer 12 was laminated | stacked on the back surface side of the skin layer 11 was obtained. A non-breathable first backing layer 131 was formed on the side of the sealing layer 12 of this laminate in the same manner as (1). Furthermore, the 2nd backing layer 132 was laminated | stacked on the back surface side of this 1st backing layer 131, the backing layer 13 was formed, and surface material CP4 (no front and back ventilation | gas_flowing) of this invention was obtained.

In the skin material CP4, the base fabric layer 111 is a nonwoven fabric having a basis weight of 100 g / m ² . Further, the pile yarn 112 is planted in the base fabric layer 111 with a basis weight of 450 g / m ² . The first backing layer 131 is made of polyethylene and has a basis weight of 350 g / m ² . Furthermore, the 2nd backing layer 132 is comprised from a nonwoven fabric, and the fabric weight is 15 g / m < ² >.

(5) Manufacture of skin material CP5 (implemented product) The above-mentioned implementation is performed on the back surface of the skin layer 11 formed by filing pile yarn 112 on a laminate obtained by bonding the base fabric layer 111 and the sound absorbing layer 114 via the adhesive layer 113. The foamed latex obtained by foaming the aqueous dispersion prepared in Example 1 (4) {water dispersion containing mixed activated carbon AC3, solid content concentration 35% by mass)} is applied with a roll coater at a solid content mass conversion of 60 g / m ² . The coating was carried out at a work rate (that is, the latex solid content was applied at 30 g / m ² and the mixed activated carbon was applied at 30 g / m ² ). Then, it was made to dry for 5 minutes at the temperature of 170 degreeC, the sealing layer 12 was formed, and the laminated body by which the sealing layer 12 was laminated | stacked on the back surface side of the skin layer 11 was obtained. A non-breathable first backing layer 131 was formed on the side of the sealing layer 12 of this laminate in the same manner as (1). Furthermore, the 2nd backing layer 132 was laminated | stacked on the back surface side of this 1st backing layer 131, the backing layer 13 was formed, and skin material CP5 (no front and back ventilation | gas_flowing) of this invention was obtained.

Note that in the skin material CP5, the base fabric layer 111 is a nonwoven fabric having a basis weight of 80 g / ^{m 2.} Further, the pile yarn 112 is planted in the base fabric layer 111 with a basis weight of 550 g / m ² . Furthermore, the sound absorbing layer 113 is a nonwoven fabric with a basis weight of 300 g / m ² , and the adhesive layer 114 is made of a polyethylene film and has a basis weight of 18 g / m ² . The first backing layer 131 is made of polyethylene and has a basis weight of 350 g / m ² . Furthermore, the 2nd backing layer 132 is comprised from a nonwoven fabric, and the fabric weight is 15 g / m < ² >.

(6) Deodorization test Each skin material obtained by said (1)-(5) was cut | judged to 100 mm x 80 mm, and it was set as each test piece. Next, each test piece was put into a gas bag (GL Science Co., Ltd.) having a volume of 4 liters, and the test gases shown in Table 3 {acetaldehyde (single gas), acetic acid (single gas), ammonia (single gas), tobacco Combustion gas (composite gas)} was injected at a rate of 4 liters (temperature 35 ° C.) each (similar to the deodorization test in Example 1 (2)), and the concentration immediately after injection and each 4 hours after injection. The concentration of the test gas was measured using a detector tube type measuring instrument (manufactured by Gastec Co., Ltd.). For the measurement of each test gas, a detector tube corresponding to each test gas described in Table 3 was used. The results are also shown in Table 3. Furthermore, sensory evaluation was performed in the same manner as the deodorization test of Example 1 (2), and the average value of the results was calculated and shown in Table 3.

From the results of CP1 to CP3 of Example 2, an excellent deodorizing effect was obtained by using the impregnated activated carbon as in the tendency of Example 1. Moreover, it turned out that the deodorizing effect which was excellent also in the skin material which has a backing layer and does not have air permeability of the front and back direction especially like a present Example is acquired.
Furthermore, from the result of CP4 of Example 2, even when a pile fabric (consisting of the base fabric layer 111 and the pile yarn 112) is used as the skin layer 11, the deodorizing performance equivalent to CP2 can be exhibited and an excellent deodorizing effect. Was found to be obtained. Further, from the result of CP5 of Example 2, in addition to the base fabric layer 111 and the pile yarn 112, the deodorizing performance equivalent to CP2 can be exhibited even when the skin layer 11 including the adhesive layer 113 and the sound absorbing layer 114 is used. It was found that an excellent deodorizing effect was obtained.

  In addition, in this invention, it can restrict to what is shown to said specific Example, It can be set as the Example variously changed within the range of this invention according to the objective and the use.

  The skin material of the present invention is suitably used as a skin material for various equipment and interior parts in automobiles, railway vehicles, ships, aircraft, indoors, and the like. Among these, it is suitably used as a car carpet for automobile use. That is, for example, it can be widely used as a floor carpet and an article carpet, and among these, it is suitable as a floor carpet. Furthermore, other examples include indoor carpets and chair skin materials.

10; skin material,
11; skin layer, 111; base fabric (base fabric layer), 112; pile yarn, 113; adhesive layer, 114; sound absorbing layer,
12; sealing layer, 121; organic polymer component, 122; impregnated activated carbon, 123; non-implanted activated carbon,
13; backing layer, 131; first backing layer, 132; second backing layer.

Claims (7)

A skin material comprising a sealing layer and a skin layer laminated on one side of the sealing layer,
A skin material, wherein the sealing layer includes impregnated activated carbon.   The skin material according to claim 1, wherein the sealing layer further includes non-attached activated carbon (a).   The said impregnated activated carbon contains at least one of the impregnated activated carbon for aldehyde adsorption (b), the impregnated activated carbon for acid gas adsorption (c), and the impregnated activated carbon for basic gas adsorption (d). The skin material described.   The skin material according to claim 3, wherein the impregnated activated carbon contains the aldehyde adsorbed activated carbon (b) and the acidic gas adsorbed activated carbon (c).   The skin material according to any one of claims 1 to 4, further comprising a backing layer on the other surface side of the sealing layer.   The said skin layer is provided with the base fabric layer, the contact bonding layer, and the sound absorption layer in this order, The said sound absorption layer is laminated | stacked on the one surface side of the said sealing layer. Skin material.   The skin material according to claim 5, wherein the backing layer includes a plurality of layers.

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