JP4390883B2 - Moisture absorbing / releasing cosmetic material for interior and method for producing the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a moisture absorbing / releasing cosmetic material for interiors having a moisture absorbing / releasing layer used for interiors of buildings such as houses.And its manufacturing methodAbout.
[0002]
[Prior art]
Conventionally, interior decoration materials have been widely used for the purpose of decorating wall surfaces of buildings such as houses. However, since conventional interior decoration materials do not have a humidity adjustment effect, condensation on the surface of the decoration material, mold, mites, etc., etc., causing changes to the humidity in the house, etc. There were concerns about adverse effects.
[0003]
Therefore, in order to give moisture absorption / release performance to the interior decorative material, by applying a coating material of a water-dispersed emulsion containing an inorganic material powder having moisture absorption / release performance such as activated clay to the surface of the base material, A method of forming a moisture absorbing / releasing layer on the substrate surface has been considered. (Japanese Patent Laid-Open No. 54-144421, Japanese Patent Laid-Open No. 10-128892, etc.)
[0004]
[Problems to be solved by the invention]
However, in this method, it is possible to contain and disperse a material having moisture absorbing / releasing performance in the coating material of the water-dispersed emulsion, so that its adsorption characteristics, thickening effect and specific gravity of the moisture absorbing / releasing material particles and the binder resin are reduced. This is very difficult due to the mutual separation and sedimentation due to the difference, and the suitability for coating (coating) is insufficient.
[0005]
In addition, as a base material, a moisture-permeable material such as paper or nonwoven fabric is usually used. Therefore, an interior decorative material provided with a moisture-absorbing / releasing resin layer on the surface of the base material is used for an adherend surface such as a wall body. When it is attached to the top, moisture will move to the adherend surface due to the hygroscopic properties of the hygroscopic material itself and the moisture permeability of the base material itself, and at the boundary between the adherend surface and the decorative material There was also a problem that condensation occurred. When such dew condensation occurs, the periphery of the boundary portion is corroded by moisture, and soot and rust are generated, which adversely affects the durability of the building.
[0006]
  Therefore, the present invention is capable of sufficiently adding moisture absorbing / releasing material particles and has excellent moisture absorbing / releasing performance, separation / sedimentation of binder resin and moisture absorbing / releasing material particles, and thickening and coating suitability when used as a coating material. Hygroscopic interior decoration material that does not cause condensation at the interface between the adherend and the decorative material when used as a decorative material on the adherend surface.And its manufacturing methodThe purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present inventor has intensively studied, and as a result, activated clay or sepiolite particles are used as the hygroscopic material, the hygroscopic material is contained in the polyolefin resin, and the composition is melt extruded. It was found that the interior moisture-absorbing / releasing cosmetic material having excellent moisture-absorbing / releasing performance can be easily obtained by laminating on the base material by the method, and the present invention has been completed.
[0008]
  That is, the present inventionThe moisture permeable layer in which a moisture proof layer is laminated on at least one surface of a moisture permeable substrate made of paper, nonwoven fabric or woven fabric, and the moisture proof layer is not formed on the moisture proof layer or the moisture proof layer.Moisture-absorbing / releasing properties for interiors, characterized by having a moisture-absorbing / releasing layer obtained by melting and extruding a polyolefin resin containing a foaming agent and particles of moisture-absorbing / releasing material made of activated clay or sepiolite on a base material Provide cosmetic materials.
[0009]
According to the interior moisture-absorbing / releasing cosmetic material of the present invention, since a sufficient amount of moisture-absorbing / releasing material particles can be added without being restricted by coating suitability and coating material dispersibility, the surface of the cosmetic material is always appropriate. Since the humidity is maintained, no condensation occurs on the surface of the decorative material, and no wrinkles, mites, etc. propagate.
[0010]
Furthermore, in the moisture absorbing / releasing cosmetic material for interior use, when the moisture proof layer is laminated on at least one surface of the moisture permeable base material, the inventor effectively transfers moisture to the adherend surface of the cosmetic material. It was found that it can be prevented.
[0011]
  According to the moisture absorbing / releasing cosmetic material for interior of the present invention, it is possible to effectively prevent the formation of condensation at the interface between the decorative material adherend and the decorative material.
[0012]
  In the present invention, a moisture-proof layer is formed on at least one surface of a moisture-permeable substrate made of paper, nonwoven fabric, or woven fabric, and the moisture-permeable layer is formed on the moisture-proof layer or on the moisture-permeable substrate on which the moisture-proof layer is not formed. After forming a moisture absorbing / releasing layer by melt-extruding and laminating polyolefin resin containing foaming agent and particles of moisture absorbing / releasing material composed of activated clay or sepiolite, the moisture absorbing / releasing layer is formed in a heating foaming furnace. Provided is a method for producing a moisture-absorbing / releasing cosmetic material for interior that is foamed by heating.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  The moisture absorbing / releasing cosmetic material for interior of the present invention will be described below.And its manufacturing methodThe embodiment will be described in detail. The interior moisture-absorbing / releasing cosmetic material of the present invention basically has a structure in which a substrate 1 and a moisture-absorbing / releasing layer 2 are laminated as shown in FIG.
[0014]
The base material of the moisture absorbing / releasing decorative material for interior use according to the present invention serves as a support for the moisture absorbing / releasing resin layer, and the shape thereof may be any of a sheet shape, a plate shape, and the like.
Base materials include high-quality paper, kraft paper, thin paper, backing paper for wallpaper, Japanese paper, base paper for wallpaper, glass fiber, asbestos, potassium titanate fiber, alumina fiber, silica fiber, carbon fiber, etc. Inorganic fibers, polyester fibers, woven or non-woven fabrics such as organic resin fibers such as vinylon fibers, timber veneer, wood plywood, particle board, made of various tree species such as cedar, straw, straw, straw, lawan, teak, melapie, Wood boards such as medium density fiberboard (MDF)
Metals such as iron, iron alloy, copper, copper alloy, aluminum, aluminum alloy,
Acrylic resin, polycarbonate resin, ethylene-vinyl acetate copolymer, ethylene vinyl acetate, polyester resin, polystyrene, polyolefin resin, ABS resin, phenol resin, polyvinyl chloride, cellulose resin, resin such as rubber,
Various glass, ceramics such as ceramics,
Cement such as ALC (foamed lightweight concrete),
Non-cement ceramic materials such as calcium silicate and gypsum,
There are non-woven fabrics or woven fabrics made of fibers such as carbon, asbestos, potassium titanate, glass, and synthetic resin. The substrate may be colored with a colorant.
[0015]
Among these, when using the interior decorative material as a sheet (decorative sheet) such as wallpaper, the basis weight is 20 to 120 g / m as the base material.²It is preferable to use the above-mentioned papers, nonwoven fabrics or woven fabrics. In the case of paper, flame retardants such as aluminum hydroxide powder and magnesium hydroxide powder can be added.
[0016]
The thickness of the base material layer is usually about 20 to 200 μm. In addition, the substrate itself can be used as it is when the design appearance is sufficient, but if desired, a decorative treatment can be applied to the front surface or back surface of the substrate (when the substrate is transparent or translucent).
[0017]
As a decoration treatment, a pattern layer, a metal thin film layer, or the like is formed on the surface of the substrate, or a concavo-convex pattern is formed on the surface of the substrate, or when the substrate layer is a resin, a dye, a pigment, etc. Or a combination thereof.
[0018]
As colorants, inorganic pigments such as titanium white, zinc white, petal, vermilion, ultramarine, cobalt blue, titanium yellow, yellow lead, carbon black,
Organic pigments (including dyes) such as isoindolinone, Hansa yellow, quinacridone, permanent red 4R, phthalocyanine blue, indanthrene blue RS, aniline black,
Metal pigments made of foil powder such as aluminum and brass,
There are pearlescent pigments made of foil powder such as titanium dioxide-coated mica and basic lead carbonate.
These are added and dispersed as powder or scaly foil pieces.
[0019]
As the pattern layer, there is a pattern layer that forms a pattern (pattern) with ink (or paint) using a known printing method such as gravure printing, offset printing, silk screen printing, or transfer printing from a transfer sheet.
[0020]
Examples of the pattern include a grain pattern, a stone pattern, a cloth pattern, a leather pattern, a geometric figure, a character, a symbol, or a solid pattern.
[0021]
As ink (or paint), binder, chlorinated polyolefin resin such as chlorinated polyethylene, chlorinated polypropylene, polyester resin, urethane resin, acrylic resin, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, cellulose series Using a resin or the like, it is possible to use a mixture obtained by adding a known colorant as listed above to one or a mixture of two or more of these.
[0022]
The concavo-convex pattern is typically formed by embossing, but other methods such as hairline processing are also possible. Embossing is a process in which a base material is heated and softened, pressed and shaped with an embossing plate, and cooled and fixed. A known single wafer or a rotary embossing machine is used.
[0023]
Embossed patterns include wood grain conduit grooves, stone plate surface irregularities (such as granite cleaved surfaces), tiled joint grooves, cloth surface textures, satin texture, sand texture, hairlines, and multiline grooves.
[0024]
Further, if necessary, colored ink can be filled in the concave and convex portions of the concave and convex pattern by a known wiping method (see Japanese Patent Publication No. 58-14312). Colored inks similar to those described above can be used. However, the thing which uses a two-component curable urethane resin as a binder is preferable at the point of abrasion resistance.
[0025]
The metal thin film can be formed and formed by using a metal such as aluminum, chromium, gold, silver, or copper by a method such as a vacuum evaporation method or a sputtering method. The metal thin film may be provided on the entire surface, or may be partially provided, for example, in a pattern.
[0026]
In addition, various ultraviolet absorbers such as benzotriazole-based, benzophenone-based, and cyanoacrylate-based ultraviolet absorbers may be added to the substrate and / or the pattern layer in order to impart weather resistance (light).
[0027]
In addition, it is also preferable to perform well-known easy adhesion processes, such as a corona discharge process, on the surface and / or the back surface of the base material as desired.
[0028]
The moisture absorbing / releasing layer of the moisture absorbing / releasing cosmetic material for interior use according to the present invention can be formed by laminating a binder resin containing a moisture absorbing / releasing material on a base material.
[0029]
As the binder resin, any resin can be used without particular limitation as long as it is capable of holding a moisture absorbing / releasing material and can be formed into a layer by melt extrusion. Examples of such resins include various resins such as polyolefin resins, acrylic resins, and polyester resins.
[0030]
The moisture absorbing / releasing decorative material for interior use of the present invention is formed by melt-extruding and laminating a resin containing a moisture absorbing / releasing material on a base material. It is preferable to use a polyolefin resin having excellent properties.
[0031]
Examples of the polyolefin resin include, for example, a high-density polyethylene, a medium-density polyethylene, a polyethylene such as a low-density polyethylene, a homopolymer composed only of an ethylenically unsaturated monomer such as polypropylene,
Binary or ternary copolymer of ethylenically unsaturated monomers such as ethylene-propylene copolymer, ethylene-propylene-butene copolymer,
An ethylenically unsaturated monomer such as an ethylene-vinyl acetate copolymer, an ethylene-acrylic acid copolymer, an ethylene methacrylic acid copolymer, an ethylene-vinyl alcohol copolymer, and other polymerizable monomers; Binary or ternary copolymers of A mixture of two or more of these polymers can also be used.
[0032]
In the present invention, among these polyolefin-based resins, the resin itself has a certain amount of moisture absorption and desorption, and is familiar with the moisture absorption and desorption material, and the dispersibility of the moisture absorption and desorption material is good and the added amount. It is particularly preferable to use an ethylene-vinyl acetate copolymer or a saponified product thereof for reasons such as increasing the amount of selenium.
[0033]
Examples of the hygroscopic material include inorganic materials such as activated clay, acid clay, sepiolite, diatomite, tobermorite, zeolite, silica gel, saponified graft copolymer of starch and acrylonitrile, crosslinked polyvinyl alcohol (polymer water-absorbing material). Any organic material such as an organic material may be used.
[0034]
Among these moisture absorbing / releasing materials, inorganic materials are preferably used for reasons such as moisture absorption and repetitive reproducibility of moisture releasing cycles, no swelling due to moisture absorption, antifungal properties, and production costs. Among these, activated clay and sepiolite are preferable because they have good compatibility with the resin, and film formation of the resin composition added to the resin and good coating suitability.
[0035]
Activated clay (montmorillonite) is a clay that has been subjected to acid treatment to enhance its activity. Usually, natural acid clay or similar clay is dried at room temperature to form a powder, which is heated at a temperature of 90 ° C. or higher under normal pressure or under pressure with an appropriate amount of acid such as sulfuric acid. A filter that is later filtered and washed and dried at 120 to 200 ° C. is used. Activated clay is known to have high moisture absorption / release performance due to its strong adsorption characteristics and porous pore size distribution.
[0036]
Activated clay is a powerful moisture-absorbing agent that does not dissolve in water or swell with water, and does not deteriorate or wrinkle even when exposed to air for a long time. Can be repeated.
[0037]
Sepiolite is a magnesium hydrous inosilicate mineral produced in jadeite as a secondary mineral.₂H₂(Si_FourO₁₁)_Three/ 3H₂O is given. Sepiolite is also a strong moisture-absorbing / releasing material, and there are fibrous and massive materials. From the viewpoint of its moisture-absorbing / releasing properties, it is preferable to use a fibrous material, particularly a short fiber material.
[0038]
The moisture-absorbing / releasing material is preferably used in the form of fine particles (absorbing / releasing particles) that are uniformly dispersed without causing separation and sedimentation in the resin. By containing the fine particles, as will be described later, when melt extrusion is performed, a part of the fine particles is extruded from the inside of the resin layer to the resin surface, and the surface density of the particles exposed on the resin surface increases. . In addition, the resin layer is made porous by the shear stress between the particles and the surrounding resin, and the particles inside the resin layer also circulate with the outside air, so that the moisture absorbing / releasing function is used more effectively. .
[0039]
The average particle diameter of the particulate hygroscopic material is preferably about 0.1 to 100 μm. The average pore diameter is 10 to 60%, preferably about 20 to 30% in terms of keeping humidity at 40 to 60%, in terms of moisture absorption and desorption.
[0040]
The amount of the hygroscopic material added to the resin is preferably about 50 to 150 parts by weight with respect to 100 parts by weight of the resin component (binder). When it is 50 parts by weight or less, the moisture absorption / release performance is not sufficiently exhibited. On the other hand, when 150 parts by weight or more is added, the melt of the resin composition to which the moisture absorbing / releasing material is added thickens, and the melt extrusion moldability deteriorates. Moreover, there exists a possibility that the intensity | strength of the moisture absorption / release resin layer obtained as a coating film may fall and it may become weak.
[0041]
In addition, when using activated clay as a moisture absorbing / releasing material, it is more preferable to add an alkaline additive to the resin in addition to the moisture absorbing / releasing material. Acidic hygroscopic materials such as activated clay cause yellowing, etc., as a result of light resistance test and heat resistance test (acceleration test of sunlight entering through windows) on resin with dispersed acidity . In the present invention, in order to avoid such a problem, it is preferable to suppress light yellowing resistance by adjusting pH by blending an alkaline moisture-absorbing material and an alkaline additive in the resin.
[0042]
Examples of the alkaline additive include hydroxides such as sodium hydroxide and potassium hydroxide, carbonates such as sodium carbonate and potassium carbonate, and bicarbonates such as sodium bicarbonate and potassium bicarbonate. The amount of the alkaline additive added is, for example, 10% by weight or more, preferably about 20% by weight of the activated clay.
[0043]
In the resin, in addition to the hygroscopic material, if necessary, a flame retardant such as magnesium hydroxide, aluminum hydroxide,
An antifungal agent such as 10,10'-oxybisphenoxyarsine,
Antibacterial agents such as silver ion supported zeolite,
Formaldehyde scavengers such as organic amino compounds,
Extender pigments such as calcium carbonate, calcium silicate, barium sulfate,
Hindered amine radical scavengers such as bis- (2,2,6,6-tetramethyl-4-piperidinyl) sebacate;
Light stabilizers such as radical scavengers such as piperidine radical scavengers,
Antioxidants such as alkylphenols, amines, quinones,
Various UV absorbers such as benzophenone, salicylate, benzotriazole, acrylonitrile,
Dispersants such as silicon-based or non-silicon-based antifoaming agents and polycarboxylic acids,
Coloring pigments such as titanium white, carbon black, phthalocyanine blue,
Photocatalysts such as anatase titanium dioxide, zinc oxide, copper complex oxide, iron complex oxide,
In addition to the heat stabilizer and the plasticizer, a foaming agent as described below can be added.
[0044]
The foaming agent is added to increase the moisture absorbing / releasing function by forming a large number of cavities by foaming in the moisture absorbing / releasing resin layer and increasing the contact area between the moisture absorbing / releasing material and the outside.
[0045]
When adding a foaming agent, the method of adding a foaming agent in the said resin composition, heating this, and making it foam is typical. As the foaming agent, for example, those listed in the following (1) to (3) can be used.
[0046]
(1) Volatile and thermally expandable substances such as butane, hexane, and pentane in hollow bodies made of resins such as polyvinyl chloride resin, polyvinylidene chloride resin, acrylonitrile-vinyl chloride copolymer, vinylidene chloride-acrylonitrile copolymer, etc. Microcapsule type foaming agent,
(2) Heat of azodicarbonamide, azobisisobutyronitrile, 4,4′-oxybisbenzenesulfonylhydrazide, N, N-dinitrosopentamethylenetetramine, sodium bicarbonate, ammonium carbonate, sodium borohydride, etc. Decomposable foaming agents, and those added with foaming accelerators such as metal soaps such as lead, zinc, calcium and tin, dibasic lead sulfate, tribasic lead and zinc white as necessary,
(3) A mixture of the above (1) and (2).
[0047]
The amount of the foaming agent added to the resin composition is usually preferably about 1 to 10 parts by weight with respect to 100 parts by weight of the resin. When the amount is less than 1 part by weight, the effect of adding a foaming agent is poor. On the other hand, when the amount exceeds 10 parts by weight, voids in the resin layer become too large, resulting in poor interlayer adhesion and large surface irregularities. It is not preferable.
[0048]
The moisture absorbing / releasing resin layer made of a resin such as a polyolefin resin containing the moisture absorbing / releasing material is mixed with a predetermined amount of binder resin, a predetermined amount of moisture absorbing / releasing material and other additives as desired, and melted. The resin composition obtained by kneading can be formed by extruding and laminating on the substrate using a T-die or the like.
[0049]
The hygroscopic resin layer is usually 10 g / m in terms of resin composition.²~ 500g / m²It can be formed with a degree of lamination. Stacking amount is 10g / m²If it is less than this, the moisture absorbing / releasing performance of the moisture absorbing / releasing resin layer is not sufficiently exhibited. On the other hand, 500 g / m²If it exceeds 1, the effect of moisture absorption / release performance of the moisture absorption / release resin layer is saturated, and the total thickness of the resulting cosmetic material becomes too thick, which may cause problems in handling.
[0050]
Furthermore, the moisture-absorbing / releasing cosmetic material for interior of the present invention has a base material in addition to the moisture-absorbing / releasing resin layer when a moisture-permeable material such as a wooden board, paper, nonwoven fabric or woven fabric is used as a base material. It is preferable to have a moisture barrier layer on one side of the material (that is, the moisture absorbing / releasing resin layer side or the opposite side of the moisture absorbing / releasing resin layer) or on both sides of the substrate. The moisture-proof layer has the property of not allowing moisture to permeate and prevents moisture from moving from the surface of the decorative material to the surface of the adherend when the decorative material is applied on an adherend such as a wall of a building. To play a role.
[0051]
Examples of the resin constituting the moisture-proof layer include polyester resins such as polyethylene terephthalate and polybutylene terephthalate, polyolefin resins such as polyethylene and polypropylene, acrylic resins such as acrylic resins and methacrylic resins, polyvinylidene chloride, and ethylene-acetic acid. Examples thereof include resins having a property of impervious to water such as vinyl copolymers and saponified products thereof. Moreover, it is also preferable to form a layer made of silica, aluminum or the like on these resin layers by a vacuum deposition method, a sputtering method, or the like.
[0052]
The moisture-proof layer is formed on at least one side of the substrate (that is, the moisture-absorbing / releasing resin layer side, the opposite side of the moisture-absorbing / releasing resin layer, or both) by the calendering method, the inflation method, the T-die extrusion method, and the dry lamination. It can form by well-known film-forming methods, such as a method. The thickness of the moisture-proof layer is usually about 20 to 100 μm.
[0053]
FIG. 1 shows an example of a moisture absorbing / releasing cosmetic material for interior use according to the present invention. FIG. 1A is a cross-sectional view of a decorative material 1A in which a hygroscopic resin layer 2 containing a hygroscopic material (particles thereof) 3 is laminated on a substrate 1. As described above, the decorative material 1A has the basic layer structure of the moisture absorbing / releasing cosmetic material for interior use of the present invention. FIG.1 (b) is sectional drawing of the moisture absorption / desorption cosmetic material 1B for interiors which provided the moisture-proof layer 4 in the surface on the opposite side to the moisture absorption / release resin layer 2 of the makeup | decoration material shown to Fig.1 (a). (C) is a cross-sectional view of an interior moisture-absorbing / releasing cosmetic material 1C in which a moisture-proof layer 4 is provided between the base material 1 and the moisture-absorbing / releasing resin layer 2 shown in FIG. 1 (a). And (d) is a decorative material having a layer structure similar to that shown in FIG. 1 (a), in which a foaming agent is contained in the hygroscopic resin layer 2, and the hygroscopic resin layer 2 is formed. FIG. 3 is a cross-sectional view of an interior moisture-absorbing / releasing cosmetic material 1D obtained by generating a large number of cellular foams a in the moisture-absorbing / releasing resin layer 2 by heat treatment after lamination.
[0054]
In addition, what was shown to Fig.1 (a)-(b) is the illustration of the moisture absorption / release cosmetic material for interiors of this invention to the last, for example, the base material 1 is colored by kneading a coloring agent in the base material 1. Or changing the layer structure, such as forming a picture print layer between the substrate 1 and the moisture-absorbing / releasing resin layer 2, the type of the substrate, the resin binder of the moisture-absorbing / releasing resin layer, the moisture-absorbing / releasing material, and The selection of the material resin of the moisture-proof layer, the setting of the base material, the thickness of each layer, and the like can be freely designed and changed without departing from the gist of the present invention.
[0055]
The interior moisture-absorbing / releasing cosmetic material of the present invention can be used by being laminated on other adherends. FIG. 2 is a structural cross-sectional view of an example in which the moisture absorbing / releasing cosmetic material for interior 1E of the present invention is laminated on the adherend 5.
[0056]
In the case of lamination, when the decorative material itself can be adhered to the adherend (by heat fusion or the like), the adhesive layer can be omitted. Further, when the interior moisture-absorbing / releasing cosmetic material itself does not adhere to the adherend, it is laminated with an appropriate adhesive 6 as shown in FIG. The adherend is the final product, and moisture absorbing / releasing cosmetic materials for interiors may be laminated for the surface makeup. In some cases, the mechanical strength of interior decorative materials is strengthened or concealed as necessary. Therefore, the adherend may be laminated on the back surface of the moisture absorbing / releasing decorative material for interior use.
[0057]
There are various materials for the adherend. The shape is a plate material such as a flat plate or a curved plate, a three-dimensional article, or a sheet (or film). Materials used for any of these shapes include wood veneer, wood plywood, particle board, medium density fiberboard (MDF), wood, iron, aluminum, etc. Metals, acrylic resin, polycarbonate, ethylene-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, polyester, polystyrene, olefin resin, ABS resin, phenol resin, polyvinyl chloride, cellulose resin, rubber and other resins The materials used exclusively as plate materials or three-dimensional articles include glass, ceramics such as ceramics, cement such as ALC (foamed lightweight concrete), non-cement ceramic materials such as calcium silicate and gypsum, exclusively sheets (or films) The materials used as high quality paper, Japanese paper, etc. Is carbon, asbestos, potassium titanate, glass, consisting of fibers such as synthetic resin nonwoven fabric or woven fabric.
[0058]
The interior moisture-absorbing / releasing cosmetic material of the present invention is a surface particularly required for moisture-absorbing / releasing performance, for example, interiors of buildings such as walls, floors and ceilings, buildings such as doors, handrails, door frames and window frames. It can be used as a decorative material on the surface of furniture such as bags, interiors of vehicles such as automobiles and trains, interiors of aircraft and ships, partitions, containers and the like.
[0059]
【Example】
Next, the present invention will be described more specifically with reference to examples and comparative examples.
Example1
140g / m basis weight with easy adhesion treatment on both sides²A base material 1 of a flame-retardant backing paper (manufactured by Kishu Paper Co., Ltd., product number “E-140RS”) is prepared, and one side of the base material of the flame-retardant backing paper has the following composition: Using an olefin resin composition containing the moisture absorbing / releasing material 3, it was melt extruded by a T-die extrusion method to obtain a thickness of 100 g / m²The hygroscopic resin layer 2 was laminated on the substrate surface.
[0060]
Next, the obtained laminate is put in a heating foaming furnace, foamed at 170 ° C. for 1 minute, and has the same layer structure as shown in FIG. 1 (a) (however, in the moisture absorbing / releasing cosmetic material for interior use in this example) The hygroscopic resin layer 1 of the decorative material of FIG. 1 (a) has a structure having many cellular foams similar to the hygroscopic resin layer 1 of the decorative material shown in FIG. 1 (d). A moisture absorbing / releasing cosmetic material for interiors having a.
[0061]
(Olefin resin composition)
Ethylene-vinyl acetate copolymer: 100 parts by weight
Hygroscopic material [active clay (average particle size 20μm)]
(Mizusawa Chemical Co., Ltd .: trade name “Galleon Earth V2R”): 100 parts by weight
Foaming agent (Matsumoto Yushi Co., Ltd .: product number “F-85”): 5 parts by weight
Anatase type titanium oxide: 5 parts by weight
Hindered amine radical scavenger: 0.5 part by weight
[0062]
The interior moisture-absorbing / releasing cosmetic material obtained was cut into a size of 25 cm × 25 cm and subjected to various performance confirmation tests of the cosmetic material described below.
[0063]
Example2
First, basis weight 140g / m with easy adhesion treatment on both sides²A base material 1 of flame retardant backing paper (manufactured by Kishu Paper Co., Ltd., product number “E-140RS”) was prepared. On the other hand, a film made of a saponified product of 12 μm thick ethylene-vinyl acetate copolymer (Kuraray Co., Ltd., trade name “EVAL HF-M # 12”) prepared on one side with easy adhesion treatment was prepared. The moisture-proof layer 4 was formed on one side of the base material 1 of the flame retardant backing paper by thermally laminating the base material 1 of the flame retardant backing paper prepared in advance so that the easy-bonding surfaces face each other.
[0064]
Next, on the opposite side of the waterproof layer 4 of the base material 1 of the flame-retardant backing paper, by using an olefin resin composition containing the hygroscopic material 3 having the following composition, by a T-die extrusion method, Thickness 100g / m²The hygroscopic resin layer 2 was laminated.
[0065]
Thereafter, the obtained laminate was put into a heating foaming furnace and foamed at 170 ° C. for 1 minute to produce an interior moisture-absorbing / releasing cosmetic material having the same layer structure as shown in FIG.
[0066]
(Olefin resin composition)
Ethylene-vinyl acetate copolymer: 100 parts by weight
Hygroscopic material [active clay (average particle size 20μm)]
(Mizusawa Chemical Co., Ltd .: trade name “Galleon Earth V2R”): 100 parts by weight
Foaming agent (Matsumoto Yushi Co., Ltd .: product number “F-85”): 5 parts by weight
Anatase type titanium oxide: 5 parts by weight
Hindered amine radical scavenger: 0.5 part by weight
[0067]
The interior moisture-absorbing / releasing cosmetic material obtained was cut into a size of 25 cm × 25 cm and subjected to various performance confirmation tests of the cosmetic material described below.
[0068]
Example 3
First, basis weight 140g / m with easy adhesion treatment on both sides²A base material 1 of flame retardant backing paper (manufactured by Kishu Paper Co., Ltd., product number “E-140RS”) was prepared. On the other hand, a film made of a saponified product of 12 μm thick ethylene-vinyl acetate copolymer (Kuraray Co., Ltd., trade name “EVAL HF-M # 12”) prepared on one side with easy adhesion treatment was prepared. The flame-retardant backing paper substrate 1 prepared above was heat-laminated so that the easy-adhesive surfaces face each other, and the moisture-proof layer 4 was formed on one side of the flame-retardant backing paper substrate 1.
[0069]
Next, on the opposite side of the waterproof layer 4 of the base material 1 of the flame-retardant backing paper, by using an olefin resin composition containing the hygroscopic material 3 having the following composition, by a T-die extrusion method, Thickness 100g / m²The hygroscopic resin layer 2 was laminated.
[0070]
Thereafter, the obtained laminate was put into a heating foaming furnace and foamed at 170 ° C. for 1 minute to produce an interior moisture-absorbing / releasing cosmetic material having the same layer structure as shown in FIG.
[0071]
(Olefin resin composition)
Ethylene-vinyl acetate copolymer: 100 parts by weight
Hygroscopic material [Sepiolite (average particle size 100μm)]
(Mizusawa Chemical Co., Ltd .: trade name “Ade Plus SP”): 100 parts by weight
Foaming agent (Matsumoto Yushi Co., Ltd .: product number “F-85”): 5 parts by weight
Anatase type titanium oxide: 5 parts by weight
Hindered amine radical scavenger: 0.5 part by weight
[0072]
The obtained moisture absorbing / releasing cosmetic material for interior use was cut into a size of 25 cm × 25 cm and subjected to various performance confirmation tests for the following cosmetic materials.
[0073]
Comparative example1
140g / m basis weight with easy adhesion treatment on both sides²A base material 1 of flame retardant backing paper (manufactured by Kishu Paper Co., Ltd., product number “E-140RS”) was prepared. Next, on one surface of the base material 1 of the flame-retardant backing paper, a thickness of 100 g / m is obtained by a T-die extrusion method using an olefin-based resin composition that does not contain a hygroscopic material having the following composition:²The hygroscopic resin layer 2 was laminated.
[0074]
Thereafter, the obtained laminate was put in a heating foaming furnace and foamed at 170 ° C. for 1 minute to produce a moisture absorbing / releasing cosmetic material for interior use having no moisture absorbing / releasing resin layer.
[0075]
(Olefin resin composition)
Ethylene-vinyl acetate copolymer: 100 parts by weight
Foaming agent (Matsumoto Yushi Co., Ltd .: product number “F-85”): 5 parts by weight
Anatase type titanium oxide: 5 parts by weight
Hindered amine radical scavenger: 0.5 part by weight
[0076]
The obtained interior decorative material was cut into a size of 25 cm × 25 cm and subjected to various performance confirmation tests of the decorative material described below.
[0077]
Using the cosmetic materials of Examples 1 to 3 and Comparative Example 1 created as described above, a humidity adjustment effect test and a moisture-proof effect confirmation test were performed by the following methods.
[0078]
Humidity adjustment effect confirmation test
Each of the decorative sheets of Examples 1 to 3 and Comparative Example previously cut into 25 cm × 25 cm are bonded to the inner wall surface of an aluminum case having an inner size of 25 cm × 25 cm × 25 cm in the aluminum case. After constant weighting at a set temperature of 20 ° C and an initial set humidity of 50% RH, the aluminum case is sealed, and the outside air temperature is 20 ° C for 0.5 hours, 30 ° C for 2 hours, 20 ° C for 2 hours, and 10 ° C for 2 hours. In this cycle, the humidity change in the aluminum case was measured. The measurement results are shown in FIG.
[0079]
As is apparent from FIG. 3, the moisture absorbing / releasing decorative materials for interiors of Examples 1 to 3 have significantly less humidity change than the decorative material of the comparative example, and have an excellent humidity adjusting function. I found out.
[0080]
Dampproof effect confirmation test
Using each of the decorative sheets of Examples 1 to 3 and Comparative Example previously cut to 25 cm × 25 cm, an atmosphere having an outside air temperature of 23 ° C. and a humidity of 50% in accordance with the method for measuring moisture permeability of building materials based on JIS A6111 Then, the moisture permeability of each decorative sheet was measured.
[0081]
As a result, the moisture permeability resistance value of the moisture absorbing / releasing decorative material for interiors having the moisture-proof layer of Examples 2 and 3 was 9.8 (m²S · Pa / μg), and the moisture permeation resistance value of other decorative materials having no moisture-proof layer is about 0.3 (m²· S · Pa / μg).
[0082]
Therefore, the moisture absorbing / releasing decorative material for interiors of Examples 2 and 3 having a moisture-proof layer has excellent moisture-proof performance as compared with the cosmetic materials of Example 1 and Comparative Example having no moisture-proof layer. all right.
[0083]
【The invention's effect】
As described above, the moisture absorbing / releasing cosmetic material for interior use according to the present invention has excellent moisture absorbing / releasing performance, and the surface is always kept at an appropriate humidity. There is no breeding of ticks, and it does not adversely affect human health or the durability of buildings.
[0084]
Moreover, the moisture absorbing / releasing cosmetic material for interior of the present invention in which a moisture-proof layer is laminated on at least one surface of the substrate can effectively prevent moisture from moving to the adherend surface. Therefore, the moisture-absorbing / releasing interior decorative material of the present invention having a moisture-proof layer does not cause condensation at the interface between the surface of the adherend such as a building wall and the decorative material, and durability of a building such as a house. Will not be adversely affected.
[Brief description of the drawings]
FIG. 1 is a structural sectional view of a moisture absorbing / releasing decorative material for interior use according to the present invention.
FIG. 2 is a cross-sectional view of the interior moisture-absorbing / releasing cosmetic material of the present invention bonded to an adherend.
FIG. 3 is a diagram showing a measurement result of a humidity adjustment effect confirmation test.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Base material, 2 ... Hygroscopic resin layer, 3 ... Hygroscopic material, 4 ... Moisture-proof layer, 5 ... Adhering body, a ... Cellular foam

Claims (2)

A moisture-proof layer is laminated on at least one surface of a moisture-permeable substrate made of paper, nonwoven fabric or woven fabric, and is formed of activated clay or sepiolite on the moisture-proof layer or on the moisture-permeable substrate on which the moisture-proof layer is not formed. A moisture absorbing / releasing cosmetic material for interiors, comprising a moisture absorbing / releasing layer obtained by melt-extruding and laminating polyolefin resin containing moisture absorbing / releasing material particles and a foaming agent. A moisture-proof layer is formed on at least one surface of a moisture-permeable substrate made of paper, nonwoven fabric or woven fabric, and is formed of activated clay or sepiolite on the moisture-proof layer or on the moisture-permeable substrate on which the moisture-proof layer is not formed. A moisture absorbing / releasing layer is formed by melting and extruding and laminating polyolefin resin containing moisture absorbing / releasing material particles and a foaming agent, and then the moisture absorbing / releasing layer is heated and foamed in a heating foaming furnace. A method for producing a moisture-releasing cosmetic material.

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