JP2020163796A - Deodorant antifouling sheet - Google Patents

Abstract

To provide a deodorant antifouling sheet material which is excellent in production suitability, suppresses permeation of odor from food or drink such as leaked and scattered juice, coffee, soy sauce and sauce and excretion such as night soil and vomit themselves or odor from the excretion while having simple layer constitution, and can deodorize the odor, and a deodorant antifouling sheet base material and a deodorant antifouling sheet prepared from the deodorant antifouling sheet material.SOLUTION: A deodorant antifouling sheet material has at least a gas permeation layer, an extrusion adhesive layer and a deodorant antifouling layer, in which the gas permeation layer is the outermost surface layer on one surface of the deodorant antifouling sheet and is a layer formed of a cloth using a fiber material, the extrusion adhesive layer contains a polyolefin-based resin, the gas permeation layer and the extrusion adhesive layer are adjacent to each other, and the deodorant antifouling layer contains a deodorant and a thermoplastic resin.SELECTED DRAWING: Figure 1

Description

The present invention relates to a deodorant and antifouling sheet material used in an environment involving filth such as a living environment and a nursing / medical field.
The deodorant and antifouling sheet material of the present invention can be applied to products in various fields in which deodorant and antifouling properties are required, and in particular, a living environment involving filth that emits or permeates odors. , Can be suitably used as a deodorant and antifouling sheet material in the nursing / medical field.
From the deodorant and antifouling sheet material, for example, a bedding cover, a wall surface material (wallpaper), a partition curtain, a window curtain, and the like can be produced.

Conventionally, sheets having gas (odor, water vapor, oxygen) permeation characteristics are known, but oxygen scavengers, desiccants, freshness preservatives, heat-generating agents, hygroscopic agents, deodorants, insect repellents, dehumidifiers or air fresheners. Although it is intended to store additives such as (Patent Document 1), or it is a sheet that expresses deodorant properties and drip absorption properties by mixing bamboo cotton and a heat-soluble resin. In bamboo cotton, the gas component to be adsorbed is limited, and since it is composed of only a gas permeable layer, it does not have antifouling properties, and there is a concern that the liquid component may stain the back side of the sheet (Patent Documents). 2) It was.
Therefore, it is desired to develop a laminated body having a gas permeable layer, gas adsorption property, antifouling property that does not allow moisture to permeate, and a variety of gas components to be adsorbed.

Japanese Patent No. 6393571 JP-A-2010-143101

The present invention solves the above-mentioned problems, is excellent in manufacturing suitability, and has a simple layer structure, but leaks or scatters of food and drink such as juice, coffee, soy sauce, sauce, and filth itself such as urine and vomit. Deodorant antifouling sheet material that can suppress the penetration of odor from the filth and deodorize, deodorant antifouling sheet material made from the deodorant antifouling sheet material, deodorant antifouling sheet The challenge is to provide.

As a result of various studies, the present inventors have found that a deodorant antifouling sheet material having a gas permeable layer made of a specific cloth, an extrusion adhesive layer, and a deodorant antifouling layer achieves the above object. I found it.

That is, the present invention is characterized by the following points.
1. 1. A deodorant antifouling sheet material having at least a gas permeable layer, an extruded adhesive layer, and a deodorant antifouling layer.
The gas permeable layer is the outermost surface layer on one side of the deodorant and antifouling sheet, and is a layer made of a cloth using a fiber material.
The extruded adhesive layer contains a polyolefin resin and is
The gas permeable layer and the extruded adhesive layer are adjacent to each other.
The deodorant and antifouling sheet material is characterized by containing a deodorant and a thermoplastic resin.
2. The deodorant is characterized by containing one or more selected from the group consisting of an inorganic odor decomposing agent, an inorganic porous body, and a chemical odor adsorbent.
The deodorant and antifouling sheet material described in 1 above.
3. 3. The deodorant is characterized in that the content of the deodorant in the layer containing the deodorant in the deodorant and antifouling layer is 0.1% by mass or more and 30% by mass or less.
The deodorant and antifouling sheet material according to 1 or 2 above.
4. The deodorant has a maximum particle diameter of 25 μm or less and a number average particle diameter of 0.05 μm or more and 20 μm or less.
The deodorant and antifouling sheet material according to any one of 1 to 3 above.
5. The deodorant and antifouling layer is characterized by having a water vapor permeability of 2000 g / m ² / day or less.
The deodorant and antifouling sheet material according to any one of 1 to 4 above.
6. A deodorant / antifouling sheet material produced from the deodorant / antifouling sheet material according to any one of 1 to 5 above.
7. A deodorant and antifouling sheet made from the deodorant and antifouling sheet material according to any one of 1 to 5 above.

The deodorant and antifouling sheet material of the present invention, the deodorant and antifouling sheet material produced from the deodorant and antifouling sheet material of the present invention, and the deodorant and antifouling sheet are excellent in manufacturing suitability and have a simple layer structure. Leaked or scattered food and drink such as juice, coffee, soy sauce, sauce, filth itself such as urine and vomitus, or the permeation of odor from the filth can be suppressed and deodorized.

It is the schematic sectional drawing which shows an example about the layer structure of the deodorant antifouling sheet material of this invention. It is the schematic sectional drawing which shows an example of the other aspect about the layer structure of the deodorant antifouling sheet material of this invention.

In each figure, the size and ratio of the members may be changed or exaggerated for the sake of clarity. In addition, for the sake of readability, unnecessary parts for explanation and repeated codes may be omitted.

The deodorant and antifouling sheet material of the present invention, the deodorant and antifouling sheet material produced from the deodorant and antifouling sheet material of the present invention, and the deodorant and antifouling sheet will be described in more detail below. The present invention will be described with reference to specific examples, but the present invention is not limited thereto.

<< Deodorant and antifouling sheet material >>
The deodorant and antifouling sheet material of the present invention suppresses and eliminates the permeation of leaked or scattered food and drink such as juice, coffee, soy sauce, sauce, filth itself such as human waste and vomitus, or odor from the filth. It is a sheet material that can smell and has excellent deodorant properties and antifouling properties.
The deodorant and antifouling sheet material is a laminate having at least a gas permeable layer, an extruded adhesive layer, and a deodorant and antifouling layer, and the gas permeable layer is a one-sided surface layer of the deodorant and antifouling sheet material. And adjacent to the extruded adhesive layer.
Deodorant and antifouling sheet materials include, for example, workability, heat resistance, weather resistance, mechanical properties, dimensional stability, antioxidant properties, slipperiness, releasability, flame retardancy, antifungal properties, electrical properties, Various plastic compounding agents, additives and the like can be contained for the purpose of improving and modifying the strength and the like. The content can be arbitrarily contained from a very small amount to several tens of percent depending on the purpose.
In the above, general additives include, for example, antiblocking agents, lubricants, cross-linking agents, antioxidants, ultraviolet absorbers, light stabilizers, fillers, reinforcing agents, antistatic agents, pigments, and modifying resins. Etc. can be contained.

[How to make deodorant and antifouling sheet material]
To prepare the deodorant and antifouling sheet material, a film constituting the gas permeable layer prepared in advance and a film or the like constituting the deodorant antifouling layer may be laminated via an extruded adhesive layer formed by extrusion. preferable.
For example, the composition for the extrusion adhesive layer melted by heating is expanded and stretched in the required width direction with a T-die or the like on the adhesive surface of the gas permeable layer prepared in advance, extruded into a curtain shape, and flowed down. While controlling the thickness of the adhesive layer, a deodorant and antifouling layer or the like is layered and sandwiched between a rubber roll and a cooled metal roll to be crimped, so that adhesion and lamination can be performed at the same time.

Further, in order to improve the adhesiveness, the surface of each layer can be subjected to a desired surface treatment in advance, if necessary, between the layers constituting the deodorant and antifouling sheet material.
For example, pretreatment such as corona discharge treatment, ozone treatment, low temperature plasma treatment using oxygen gas or nitrogen gas, glow discharge treatment, oxidation treatment using chemicals, etc. is arbitrarily performed to perform corona treatment layer, ozone treatment, etc. A layer, a plasma-treated layer, an oxidation-treated layer and the like can be formed and provided.
Alternatively, various coating agent layers such as a primer coating agent layer, an undercoating agent layer, an anchor coating agent layer, an adhesive layer, and a vapor deposition anchor coating agent layer can be arbitrarily formed on the surface to form a surface treatment layer.

The above-mentioned various coating agent layers include, for example, polyester resin, polyamide resin, polyurethane resin, epoxy resin, phenol resin, (meth) acrylic resin, polyvinyl acetate resin, polyolefin such as polyethylene or polypropylene. A resin composition containing a based resin or a copolymer or modified resin thereof, a cellulose based resin, or the like as the main component of the vehicle can be used.

<Gas permeable layer>
The gas permeable layer is a layer made of a gas permeable cloth using a fiber material. The gas permeable cloth may be a non-woven fabric or a woven cloth, but a non-woven fabric is preferable.
The gas permeable layer is a layer that allows gas such as moisture, air, and odor to pass through. It does not have to have deodorant property, antifouling property, or waterproof property.
The gas permeable layer may be composed of one layer or two or more layers having the same or different configurations.
The basis weight of the cloth constituting the gas permeable layer is preferably 10 to ²⁰⁰ g / m ² . If it is smaller than the above range, the strength of the gas permeable sheet tends to decrease, and it is difficult to obtain stable processing characteristics. If it is larger than the above range, the gas permeability tends to decrease, and further, the gas permeable sheet. The rigidity of the product may become too high, limiting the scope of application as a product.

[Fiber material constituting the gas permeable layer]
As the fiber used for the gas permeable layer, a known material can be applied as long as it is a material capable of having high lamination strength between both the gas permeable layer and the extruded adhesive layer.
Specific examples of fiber materials used for the gas permeable layer include cotton, silk, wool, hemp, pulp, polyethylene fiber, polypropylene fiber, polystyrene fiber, polyester-polyethylene double structure fiber, pulp-polyethylene-polypropylene composite fiber, and Examples thereof include a combination of these.
Among the above fiber materials, pulp, polyethylene fiber, polyester-polyethylene double structure fiber, and pulp-polyethylene-polypropylene composite fiber are preferable because they have good adhesiveness.

<Extrusion adhesive layer>
The extruded adhesive layer is an extruded adhesive layer, and preferably contains a polyolefin-based resin.
Specific examples of the polyolefin resin include low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), polypropylene (PP), linear (linear) low density polyethylene (LLDPE), and ethylene. Low of -vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-methylmethacrylic acid copolymer, ethylene-propylene copolymer, etc. Examples include those eluted and mixtures of their resins.
Among the above, polyethylene-based resins are preferable, and among polyethylene-based resins, LDPE and / or LLDPE are more preferable, and LDPE is even more preferable.

<Deodorant and antifouling layer>
The deodorant and antifouling layer is a layer having a deodorant action and an antifouling property, and contains a deodorant and a thermoplastic resin.
The water vapor transmittance of the deodorant and antifouling layer is preferably 2000 g / m ² / day or less. If the water vapor permeability is larger than the above range, odor and sewage may permeate through the deodorant and antifouling layer. The lower the lower limit, the more preferable, and 0 g / m ² / day is most preferable.
Further, the deodorant and antifouling layer may have a heat-sealing property, and in that case, it is preferable to contain a thermoplastic resin having a heat-sealing property.
The deodorant and antifouling layer may be composed of one layer or two or more layers having the same or different configurations. For example, it may be composed of a deodorant layer containing a deodorant and a heat seal layer containing a thermoplastic resin without containing the deodorant layer and having excellent heat sealability. In particular, when the deodorant and antifouling layer is formed from a deodorant and antifouling film, if heat seal layers are laminated on both sides of the deodorant and antifouling film, the adhesiveness at the time of lamination is excellent. When the layer can be easily formed and the deodorant / antifouling layer is a surface layer, a deodorant / antifouling sheet material having excellent heat sealability can be obtained.

[Deodorants]
The deodorant preferably contains one or more selected from the group consisting of an inorganic odor decomposing agent, an inorganic porous body, and a chemical odor adsorbent. When the filth is human waste, the odorous components contain hydrogen sulfide and ammonia, and the above-mentioned deodorant can efficiently deodorize these odorous components. It is preferable to select a deodorant according to the type of odor of the filth contained in the container. Further, if necessary, a deodorant other than the above can be used in combination.
When the above deodorant is used as a powder, the maximum particle size of the powder is preferably 25 μm or less, and the number average particle size is preferably 0.05 μm or more and 20 μm or less. If the number average particle size is smaller than the above range, the deodorant is likely to aggregate, and if the maximum particle size or the number average particle size is larger than the above range, the film has a film thickness or layer thickness of 25 μm or less. Particles larger than the thickness or layer thickness tend to be present and the homogeneity tends to be inferior, the deodorizing performance tends to be deteriorated, and the laminate strength and the heat seal strength tend to be lowered.

The content of the deodorant in the layer containing the deodorant is preferably 0.1% by mass or more and 30% by mass or less. If it is less than the above range, it tends to be difficult to exhibit sufficient deodorant property, and if it is more than the above range, the deodorant property is not particularly improved, and the lamination strength and the heat seal strength are easily lowered.

(Inorganic odor decomposition agent)
Examples of the inorganic odor decomposing agent include a metal-supported inorganic oxide, a metal oxide, a salt composed of a metal cation and an inorganic acid anion mixed with the metal oxide, and the like, and specifically, a copper phosphate glass. Examples thereof include a mixture of baked myoban (AlK (SO ₄ ) ₂ ) with CaO and ZnO.
The inorganic odor decomposing agent exhibits a catalytic action that promotes the decomposition reaction of sulfur-based malodorous substances by ionizing metal components and the like in the inorganic odor decomposing agent.
The powdered metal-supported inorganic oxide is mixed with the raw material metal oxide, phosphorus compound, etc., melted and homogenized by the same method as for making general-purpose glass such as bottle glass, cooled, and then pulverized. It can be obtained by making it into a powder and supporting a metal salt. Alternatively, the metal salts may be premixed together before the raw materials are melted.

(Inorganic porous body)
The inorganic porous body is a substance having a large number of pores on its surface, and is, for example, an inorganic phosphate such as activated clay, activated bentonite, zeolite, zirconium compound, silicon dioxide, silicate, activated carbon, titania, and calcium phosphate. , Alumina, aluminum hydroxide, magnesium hydroxide, and mixtures thereof.

Activated clay is a type of clay that is porous, has a large specific surface area, and has excellent adsorptivity, and is obtained by heat-treating naturally-produced acidic clay containing montmorillonite as the main component with an inorganic acid such as sulfuric acid or hydrochloric acid.
Among the above, activated clay, activated bentonite, and zeolite are preferably used from the viewpoints of odor adsorption performance, having a porous state with pore sizes effective for the molecular size and cluster size of the odorous substance, and safety.
The activated clay preferably has a large specific surface area, and the specific surface area is not particularly limited, but one having a specific surface area of 50 to 400 m ² / g is easily available. The pH (5% suspension) is preferably 2.5-9, more preferably 3-7.

Activated bentonite is artificially Na-typed by adding several wt% sodium carbonate to Ca-type bentonite, and exhibits properties similar to Na-type bentonite.
Here, bentonite is mainly composed of montmorillonite, which is a clay mineral, and contains minerals such as quartz and feldspar as impurities. Na-type bentonite containing a large amount of Na ⁺ ions and Ca containing a large amount of Ca ²⁺ ions. It is roughly divided into two types: bentonite.

Zeolites are substances mainly composed of SiO ₂ / Al ₂ O _3, generally higher molar ratio of SiO ₂ / Al ₂ O _3, the higher the hydrophobicity, in the present invention, SiO ₂ / Hydrophobic zeolite having a molar ratio of Al ₂ O ₃ of 30/1 to 8000/1 is preferable.
Hydrophobic zeolite does not lose its odor adsorbing ability even when the sheet or sheet material is exposed to 230 ° C. or higher, and can exert a deodorizing effect by adsorbing odorous substances.
Since hydrophobic zeolite is hydrophobic, it is difficult to adsorb highly polar water molecules, etc., and conversely, it has an affinity with low-polarity odor molecules, hydrophobic gases, and lipophilic gases (including solvent-based gases). Is high and it is easy to adsorb these. Further, the zeolite surface is basic due to the effects of alkali metals such as Ca, Na and K and alkaline earth metals existing on the zeolite surface, and acid gas is easily adsorbed by a neutralization reaction.

(Chemical odor adsorbent)
In the present invention, the chemical odor adsorbent is a compound having a reactive functional group that chemically reacts with an odorous substance to bind to it, and for example, binds to an odorous substance such as various aldehydes, ketones, and carboxylic acids. It is a compound having a reactive functional group.
At this time, due to the chemical adsorption, the odorous substance once adsorbed is not desorbed, and the odor adsorption can be efficiently performed.
Furthermore, unlike physical adsorbents in which odor and water vapor are adsorbed on the same adsorption site, odorous substances bind to specific functional groups of chemical odor adsorbents, so that various substances that reduce the ability to adsorb odors, such as Not easily affected by water vapor.

Examples of such a chemical odor adsorbent include compounds containing an amino group, for example, polyamines such as alkylamines and tetramethylenediamine, and compounds having basic functional groups such as ethanolamine, piperidine, and hydroxyl groups, for example, sodium hydroxide. , Hydroxides such as potassium hydroxide, magnesium hydroxide and iron hydroxide, carbonates such as sodium carbonate, sodium hydrogencarbonate and calcium carbonate, hydrogencarbonates and amide groups such as 2-acrylamide-2-methylpropanesulfonic acid. Examples include, but are not limited to, contained compounds.
For example, the hydroxyl group of a chemical odor adsorbent causes a chemical reaction with the carboxyl group of an odorous substance, and the amino group of a chemical odor adsorbent causes a chemical reaction with an aldehyde group of an odorous substance, and easily adsorbs odorous meteorological substances. ..
Among the above, compounds having an amino group, such as polyamines such as ethylenediamine, diethylenetriamine, triethylenetriamine, tetraethylenepentamine, piperazine, and metaphenylenediamine, exhibit particularly excellent adsorption effects.

The chemical odor adsorbent is preferably used by being supported on an inorganic porous body. Among the above-mentioned inorganic porous bodies, zeolite and zirconium compounds are preferable as the inorganic porous body to be supported.
As a supporting method, a known or conventional supporting method can be applied. For example, it can be supported by impregnating an inorganic porous body with a solution containing a chemical odor adsorbent and drying it.
By supporting the chemical odor adsorbent on the inorganic porous body, the adsorptive capacity of the chemical odor adsorbent per unit mass can be significantly increased, and the content of the chemical odor adsorbent in the laminate can be reduced. In addition, physical adsorption characteristics for the pores of the inorganic porous body can be expected. In addition, the chemical odor adsorbent can be treated as a powder.

[Thermoplastic resin in the deodorant antifouling layer]
Polyolefin-based resins are preferable as thermoplastic resins that disperse deodorants in the deodorant and antifouling layer, exhibit the above-mentioned water vapor permeability, and have excellent antifouling and heat-sealing properties. Among the based resins, polyethylene-based resins are more preferable, and among polyethylene-based resins, LLDPE or LDPE is even more preferable.

<< Deodorant and antifouling sheet material >>
The deodorant and antifouling sheet material is a sheet material produced by using the deodorant and antifouling sheet material of the present invention, and has deodorant and antifouling properties, and may also have heat-sealing properties if necessary. it can.
Specific examples of the deodorant and antifouling sheet material include roll winding of the deodorant and antifouling sheet material.

<< Deodorant and antifouling sheet >>
The deodorant and antifouling sheet is a sheet produced by using the deodorant and antifouling sheet material of the present invention, and has deodorant and antifouling properties, and can also have heat-sealing properties if necessary.

<Raw materials>
The main raw materials used in the examples of the present invention are as follows.
[Deodorants]
(Chemical odor adsorbent)
-Chemical odor adsorbent 1: Kesmon NS-241, an amino group-containing compound-supported inorganic porous body manufactured by Toagosei Co., Ltd. Average particle size 3.5 μm.
-Chemical odor adsorbent 2: Hydroxy group-supported zirconium manufactured by Toagosei Co., Ltd., Kesmon NS-80E. Average particle size 2 μm.
-Chemical odor adsorbent 3: Zirconium phosphate compound, Kesmon NS-10, manufactured by Toagosei Co., Ltd. Average particle size 1 μm.
(Inorganic odor decomposition agent)
-Inorganic odor decomposition agent 1: Copper kneaded glass manufactured by Ishizuka Glass Co., Ltd., Deogra. Average particle size = 3-4 μm.
-Inorganic odor decomposing agent 2: Made by Sinanen Zeomic Co., Ltd. Copper oxide / zinc oxide composite aluminosilicate, dashlight CZU. Average particle size = 3-5 μm.
-Inorganic odor decomposing agent 3: A master batch dime shoe manufactured by Dainichi Seika Kogyo Co., Ltd., which is a mixture of AlK (SO ₄ ) ₂ , CaO and ZnO / LDPE = 30/70 mass ratio.
(Inorganic porous body)
-Inorganic porous body 1: Made by Mizusawa Industrial Chemicals, Inc., activated clay, galleon earth SH. Average particle size = 5 μm.
-Inorganic porous body 2: Silton MT100, manufactured by Mizusawa Industrial Chemicals, Inc. SiO ₂ / AL ₂ O ₃ molar ratio = 100/1, average particle size 3 to 4.5 μm.

[Gas permeable cloth]
-Gas permeable cloth 1: Elves, manufactured by Unitika Ltd., basis weight; 40 g / m ² , spunbond type, polyester-polyethylene double-structured fiber.
-Gas permeable cloth 2: Sunmore Soft, manufactured by Sanwa Paper Co., Ltd., basis weight; 70 g / m ² , long fiber wet non-woven fabric type, pulp-polyethylene-polypropylene composite fiber.
-Gas permeable cloth 3: Eclair 3401A, Toyobo, basis weight; 40 g / m ² , spunbond type, polyester fiber.
[Heat-sealable thermoplastic resin, thermoplastic resin, adhesive for EC]
-LLDPE1: Ultozex 1520L, manufactured by Prime Polymer Co., Ltd. LLDPE, density 0.916 g / cm ³ , MFR = 2.3. Water vapor permeability 23 g / m ² / day. (Evaluated with 50 μm film).
-LDPE1: Novatec LC600A, manufactured by Japan Polyethylene Corporation. LDPE, density 0.918 g / cm ³ , MFR = 7.0.
-LDPE2: Novatec LC520, LDPE manufactured by Japan Polyethylene Corporation, MFR: 3.6 g / 10 minutes, density 0.923 g / cm ³ .

<Preparation of masterbatch>
The masterbatch was adjusted as follows.
[Adjustment of Masterbatch 1]
LDPE1 and the chemical odor adsorbent 1 were melt-blended at the following ratios to obtain Masterbatch 1 (MB1).
LDPE1 90 parts by mass Chemical odor adsorbent 1 10 parts by mass [Adjustment of master batch 2 to 13]
According to the formulation shown in Table 1, master batches 2 to 12 (MB2 to 13) were obtained by melt blending in the same manner as in masterbatch 1.

<Example 1>
[Preparation of film for deodorant and antifouling layer]
MB1, MB2, MB3 and LLDPE1 obtained above were dry-blended at the following ratios to obtain a mixture for the deodorant layer.
Masterbatch 1 16.7 parts by mass Masterbatch 2 33.3 parts by mass Masterbatch 3 33.3 parts by mass LLDPE1 16.7 parts by mass Then, 160 parts of the mixture obtained above and LLDPE1 for the heat seal layer 1 The film 1 for a deodorant and antifouling layer having the following three layers was obtained by laminating by inflation film formation at ° C.
Heat seal layer 1 (10 μm) / Deodorant layer (30 μm) / Heat seal layer 2 (10 μm)
[Making and evaluation of deodorant and antifouling sheet]
Next, the gas permeable cloth 1 for the gas permeable layer and the deodorant antifouling layer film 1 obtained above are adhered to each other at 320 ° C. by the extrusion coating method using LDPE 1 to have the following layer structure. A deodorant and antifouling sheet was obtained, and the deodorant performance and antifouling properties were evaluated.
Ta.
Gas permeable layer (40 g / m ² ) / extrusion adhesive layer (15 μm) / deodorant antifouling layer [heat seal layer 1 (10 μm) / deodorant layer (30 μm) / heat seal layer 2 (10 μm)]

<Examples 2 to 10>
Select and use the material of the masterbatch and the deodorant and antifouling layer sheet according to the description in Table 2, and operate in the same manner as in Example 1 to prepare the deodorant and antifouling layer sheet. The antifouling properties were evaluated.

<Comparative example 1>
Only the gas permeable cloth 1 was used, and the deodorant performance and the antifouling property were evaluated in the same manner as in Example 1.
<Comparative example 2>
A film for a deodorant and antifouling layer having a film thickness of 50 μm was obtained by forming an inflation film of LLDPE1 at 160 ° C. Using the deodorant and antifouling layer film and the gas permeable cloth 1, the same operation as in Example 1 was performed to prepare a deodorant and antifouling layer sheet, and the deodorant performance and antifouling properties were evaluated in the same manner. ..
<Comparative example 3>
An antifouling sheet was prepared by performing the same operation as in Example 1 except that the gas permeable cloth 3 was used, and the odor adsorption performance and the antifouling property were evaluated in the same manner.

<Summary of results>
The deodorant and antifouling sheet according to the embodiment of the present invention exhibited good laminating properties, deodorizing properties, and antifouling properties. On the other hand, in Comparative Examples 1 to 3 which do not correspond to the present invention, any one of the deodorant property, the antifouling property, and the laminating property showed insufficient performance.

<Evaluation method>
[Laminating characteristics]
◯: Good adhesiveness between the gas permeable layer / deodorant and antifouling layer via the extruded adhesive layer.
X: The adhesiveness between the gas permeable layer / deodorant and antifouling layer via the extruded adhesive layer is weak and can be easily peeled off.

[Deodorant performance]
Cut the deodorant and antifouling sheet to 20 x 20 cm, put 1000 ml in a gas sampling bag (layer structure: IB-PET-PIR 12 μm / adhesive layer / ONy 15 μm / adhesive layer / LLDPE film 60 μm), and change the odor after leaving for 2 days. Was measured by sensory evaluation. The odor components were adjusted to be acetaldehyde: 200 ppm, acetic acid: 30 ppm, hydrogen sulfide: 20 ppm, and ammonia: 30 ppm.
The evaluation criteria are as follows: ・ 1 = Smell unchanged from the initial stage ・ 2 = Smell was slightly reduced from the initial stage ・ 3 = Smell was significantly reduced compared to the initial stage ・ 4 = No odor at all

[Anti-fouling characteristics]
With the gas permeation layer side of the deodorant and antifouling sheet as the inner surface, seal on four sides with an impulse sealer to prepare a pouch of 13 cm x 17 cm, fill this pouch with 100 ml of water, and leak after storage for 1 hour. Was evaluated.
〇: There was no water leakage from the pouch, and the filled water was maintained.
×: Water leaks from the pouch.

1 Deodorant antifouling sheet 2 Gas permeation layer 3 Extruded adhesive layer 4 Deodorant antifouling layer 4a Heat seal layer 4b Deodorant layer

Claims (7)

A deodorant antifouling sheet material having at least a gas permeable layer, an extruded adhesive layer, and a deodorant antifouling layer.
The gas permeable layer is the outermost surface layer on one side of the deodorant and antifouling sheet, and is a layer made of a cloth using a fiber material.
The extruded adhesive layer contains a polyolefin resin and is
The gas permeable layer and the extruded adhesive layer are adjacent to each other.
The deodorant and antifouling sheet material is characterized by containing a deodorant and a thermoplastic resin. The deodorant is characterized by containing one or more selected from the group consisting of an inorganic odor decomposing agent, an inorganic porous body, and a chemical odor adsorbent.
The deodorant and antifouling sheet material according to claim 1. The deodorant is characterized in that the content of the deodorant in the layer containing the deodorant in the deodorant and antifouling layer is 0.1% by mass or more and 30% by mass or less.
The deodorant and antifouling sheet material according to claim 1 or 2. The deodorant has a maximum particle diameter of 25 μm or less and a number average particle diameter of 0.05 μm or more and 20 μm or less.
The deodorant and antifouling sheet material according to any one of claims 1 to 3. The deodorant and antifouling layer is characterized by having a water vapor permeability of 2000 g / m ² / day or less.
The deodorant and antifouling sheet material according to any one of claims 1 to 4. A deodorant and antifouling sheet material produced from the deodorant and antifouling sheet material according to any one of claims 1 to 5. A deodorant / antifouling sheet made from the deodorant / antifouling sheet material according to any one of claims 1 to 5.

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