JP2005113044A - Decorative material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative material using a woody resin molded product excellent in woody feeling and suitability for recycle as a base material and having higher cutting property. <P>SOLUTION: The decorative material uses a woody resin molded product 1 containing a thermoplastic resin 11 and a woody filler 12 as a base material. The decorative material comprises (a) a copolymer obtained by copolymerizing an α-olefin with a cyclic olefin and (b) a polyolefin-based resin other than the copolymer (a) as the thermoplastic resin 11. The decorative material comprises, preferably, the copolymer (a) in an amount of 1-50 pts.wt. based on 100 pts.wt. polyolefin-based resin (b). The woody resin molded product 1 may be woody resin foam containing foam 13 in the interior or a decorative sheet 2 may be laminated on the surface of the woody resin molded product 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a decorative material used as an interior / exterior material or a furniture material of a building, and in particular, used for an indoor floor surface in a building such as a detached house, a condominium, an apartment, a sanatorium, an office building, a store, etc. The present invention relates to a decorative material suitable as a flooring material.

  At present, wood flooring materials are most prevalent as floor materials for indoor floors in buildings such as detached houses. This wood flooring material is a natural plate of natural wood having a thickness of about 5 to 15 mm or a veneer of natural wood having a thickness of about several hundred μm to several mm on a wooden substrate of about 5 to 15 mm. Or a painted product thereof.

  These wooden flooring materials using natural wood have been widely accepted by consumers since the design of the surface is the most natural, familiar and beautiful design of natural wood. However, it is easy to discolor when exposed to sunlight, and when it gets wet, it tends to swell, crack, warp, corrode, peel off the veneer, etc. It has been pointed out that there are problems in use, and that the quality, price, and supply amount of color tone and grain shape are unstable because it is a natural material.

  In recent years, in particular, as social interest in global environmental protection issues has increased, mass consumption of natural wood that leads to environmental destruction has become more common, and in the field of building materials such as flooring, resource recycling An approach to use is required. However, it is extremely difficult to recycle the wood flooring material as a flooring material, both technically and economically, and at most it is only crushed and recycled as a raw material for particleboard. This is also due to the lack of progress in application development in response to the rapid increase in supply in recent years, so there is an excess inventory, and recycling is in a deadlock situation. Most of the final disposal is done by landfill or incineration. .

  Therefore, there is a strong social demand for the development of a recyclable cosmetic material that can be reused as a raw material for the same type of cosmetic material after the use of a decorative material such as a flooring material. In order to meet these demands, the present inventors have already made a thermoplastic resin similar to the thermoplastic resin contained in the wooden resin molded article on the surface of the wooden resin molded article containing the thermoplastic resin and the wooden filler. A decorative material formed by laminating decorative sheets mainly composed of resin has been proposed (see Patent Document 1).

  This cosmetic material is mainly composed of a thermoplastic resin, so it has excellent water resistance and weather resistance. It can supply a large amount of products with stable properties in terms of physical properties and design at low cost, such as cutting and nailing. The processability is equivalent to that of the wood-based flooring material, and it has excellent recyclability such that it can be pulverized as it is after use and reused as a molding material for the wood resin molding.

  In addition, the present inventors have further said wood resin molding for the purpose of improving adhesiveness by water-based or solvent-based adhesives, heat insulating property giving warm touch similar to natural wood, elasticity giving a pleasant walking feeling, etc. A cosmetic material using a wood resin foam molded body obtained by foaming the body as a base material has already been proposed (see Patent Document 2).

  However, as a result of the trial production after that, it was found that the cosmetic material using the above-described wood resin molded body or wood resin foam molded body also needs the following improvements. That is, when actually applying a decorative material such as a flooring material, for example, when applying to the length of the room, or when applying to a pillar part, it is necessary to cut the decorative material. The wood resin molded body and the wood resin foam molded body contain a wood-based filler, so that the machinability is improved when compared with a decorative material based on a resin molded body not containing a wood-based filler. It has the advantage of being excellent. However, in consideration of shortening the time required for construction and reducing labor required for construction, further improvement in machinability is required.

  In addition to the above, there have already been many proposals for decorative materials such as flooring using a base material mainly composed of a thermoplastic resin. For example, there is a balance between flexibility and fluidity of the resin and mechanical strength. As a purpose, there is also a proposal of a flooring using a copolymer of an α-olefin and a cyclic olefin and / or an aromatic vinyl (see Patent Document 3). However, this is not intended to contain a wood-based filler, nor is it intended to improve machinability.

The prior art document information relevant to the present invention is listed below.
JP 2001-353815 A JP 2002-120347 A JP 2002-145942 A

  The present invention has been made in order to solve the above-described problems in the prior art, and is a decorative material based on a wooden resin molded article excellent in wood texture and recyclability, which is higher. It is an object of the present invention to provide a decorative material imparted with machinability.

  The decorative material of the present invention is a decorative material based on a wooden resin molded article containing a thermoplastic resin and a wooden filler, wherein (a) an α-olefin and a cyclic olefin are used as the thermoplastic resin. It contains a copolymer obtained by polymerization and (b) a polyolefin resin other than the copolymer (a).

  In the decorative material, the copolymer (a) is contained in an amount of 1 to 50 parts by weight with respect to 100 parts by weight of the polyolefin resin (b).

  The decorative material of the present invention is based on a wood resin molded body containing a thermoplastic resin and a wood filler, so that it has excellent wood texture and recyclability, as well as heat used for the wood resin molded body. As a plastic resin, it contains (a) a copolymer obtained by copolymerizing an α-olefin and a cyclic olefin, and (b) a polyolefin resin other than the copolymer (a). Is contained in an amount of 1 to 50 parts by weight with respect to 100 parts by weight of the latter, it has a remarkable practical advantage that a cosmetic material with higher cutting ability can be provided.

  As shown in FIG. 1, the basic structure of the decorative material of the present invention is based on a wooden resin molded body 1 formed by molding a mixture of a thermoplastic resin 11 and a wooden filler 12. . The woody resin molded body 1 may be made into a woody resin foam molded body by molding while foaming (introducing the bubbles 13 inside). Further, a decorative sheet 2 may be laminated on the surface of the woody resin molded body 1 for the purpose of imparting a surface design such as a wood grain pattern.

  And the thermoplastic resin 11 in the said wooden resin molding 1 is (a) the copolymer obtained by copolymerizing (alpha) -olefin and a cyclic olefin, (b) polyolefin other than the said copolymer (a) It is important in the present invention to be composed of a resin.

  In the copolymer obtained by copolymerizing (a) an α-olefin and a cyclic olefin used in the present invention, the α-olefin includes α-monoolefins having about 2 to 22 carbon atoms, halogen-substituted α -At least 1 type chosen from monoolefins and chain | strand-shaped diolefins can be mentioned. Specifically, ethylene, propylene, 1-butene, 3-methyl-1-butene, 4-phenyl-1-butene, 1-pentene, 3-methyl-1-pentene, 4-methyl-1-pentene, 3 , 3-dimethyl-1-pentene, 3,4-dimethyl-1-pentene, 4,4-dimethyl-1-pentene, 1-hexene, 4-methyl-1-hexene, 5-methyl-1-hexene, 6 Α-monoolefins such as phenyl-1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicocene, vinylcyclohexane, hexafluoropropene, tetra Fluoroethylene, 2-fluoropropene, fluoroethylene, 1,1-difluoroethylene, 3-fluoropropene, trifluoroethylene 3,4-dichloro-1-halogen-substituted α- olefins such as butene, butadiene, isoprene, 1,4-pentadiene, linear diolefins such as 1,5-hexadiene and the like. These α-olefins can be appropriately selected, and may be single or a mixture of plural kinds.

Examples of the cyclic olefin copolymerized with the α-olefin include monocycloalkene having about 3 to 20 carbon atoms, bicyclo [2.2.1] -2-heptene (also known as norbornene) and its derivatives, tricyclo [4 .3.0.1 ^2,5 ] -3-decene and derivatives thereof, tetracyclo [4.4.0.1 ^2,5 . 1 ^7,10 ] -3-dodecene and its derivatives, pentacyclo [6.5.1.1 ^3,6 . 0 ^2,7 . 0 ^9,13] -4-pentadecene and its derivatives, pentacyclo [7.4.0.1 ^2,5. 1 ^9,12 . 0 ^8,13] -3-pentadecene and its derivatives, pentacyclo [8.4.0.1 ^2,5. 1 ^9,12 . 0 ^8,13] -3-hexadecene and its derivatives, pentacyclo [6.6.1.1 ^{3, 6.} 0 ^2,7 . 0 ^9,14] -4-hexadecene and derivatives thereof, hexacyclo [6.6.1.1 ^{3, 6.} 1 ^10,13 . 0 ^2,7 . 0 ^9,14] -4-heptadecene and its derivatives, heptacyclo [8.7.0.1 ^2,9. 1 ^4,7 . 1 ^{11, 17} . 0 ^3,8 . 0 ^12,16 ] -5-eicosene and its derivatives, heptacyclo [8.7.0.1 ^3,6 . 1 ^{10, 17} . 1 ^{12, 15} . 0 ^2,7 . 0 ^11,16 ] -4-eicosene and its derivatives, heptacyclo [8.8.0.1 ^2,9 . 1 ^4,7 . 1 ^{11, 18} . 0 ^3,8 . 0 ^12,17 ] -5- ^Heneicosene and its derivatives, octacyclo [8.8.0.1 ^2,9 . 1 ^4,7 . 1 ^{11, 18} . 1 ^13,16 . 0 ^3,8 . 0 ^12,17] -5-docosene and its derivatives, Nonashikuro [10.9.1.1 ^{4, 7.} 1 ^13,20 . 1 ^{15, 18} . 0 ^2,10 . 0 ^3,8 . 0 ^{12, 21} . 0 ^14,19] -5-pentacosene and cyclic olefins such as its derivatives, and the like. These cyclic olefins can be appropriately selected, and may be single or mixed.

  As a copolymerization ratio of both in the copolymer obtained by copolymerizing the α-olefin and the cyclic olefin used in the present invention, from the viewpoint of the cutting performance of the woody resin molded body as the base material of the decorative material, α- It is preferable that it is 90-10 mol% of cyclic olefins with respect to 10-90 mol% of olefins, More preferably, 50-80 mol%, More preferably, it is 50-20 mol%.

  (B) Polyolefin resins other than the copolymer (a) used in the present invention include polyolefin resins such as polyethylene, polypropylene, polybutene, polyisoprene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, An ethylene-α-olefin copolymer, a propylene-α-olefin copolymer, an ethylene-ethyl acrylate copolymer, an acid-modified one of these for the purpose of improving adhesiveness, or an ionomer can be selected as appropriate. A single type or a mixture of a plurality of types may be used.

  Among them, polypropylene-based materials such as homopolypropylene, random polypropylene, block polypropylene, and propylene-α-olefin copolymer are particularly required in terms of rigidity, surface hardness, dimensional stability, etc. required as a base material for decorative materials such as flooring. Resin is most suitable.

  In particular, in order to increase the adhesion, for example, the blend ratio of the acid-modified resin such as polyethylene or polypropylene obtained by graft copolymerization with an unsaturated carboxylic acid such as maleic acid or its anhydride is increased, and the resin itself It is desirable to impart polarity to the wood and to improve the adhesion to the wood filler.

  In the present invention, the blending ratio of the copolymer (a) and the polyolefin resin (b) is 1-50 with respect to 100 parts by weight of the polyolefin resin (b). Parts by weight, preferably 5 to 40 parts by weight, more preferably 10 to 35 parts by weight. When the blending ratio of the copolymer (a) is less than this, the effect of improving the machinability cannot be sufficiently obtained. On the other hand, when the amount is larger than this, basic physical properties such as surface hardness required as a base material for a decorative material such as a flooring may be impaired.

  In the present invention, the material of the wood filler 12 used in the wood resin molded body 1 can be selected without any particular restriction, but generally, the wood is broken by a cutter mill or the like, Is pulverized with a ball mill or impeller mill to obtain a fine powder (wood powder).

  It is important that the average particle diameter of the wood filler 12 is 1 to 200 μm, preferably 10 to 150 μm. Those having an average particle size of less than 1 μm are difficult to handle, and especially when the amount of the wood filler is large, if the dispersion into the resin is poor, the mechanical strength of the produced wood resin molded product Decrease occurs. On the other hand, if it is larger than 200 μm, the homogeneity, flatness and mechanical strength of the molded product are lowered.

  Moreover, about the compounding quantity of the wood type filler 12, it is 10 weight part to 300 weight part with respect to 100 weight part of the thermoplastic resin 11 which consists of the said copolymer (a) and the said polyolefin resin (b). Although appropriate selection is possible, in order to improve moldability and homogeneity, the wood filler 12 is 20 to 200 parts by weight, more preferably 30 to 150 parts by weight, based on 100 parts by weight of the thermoplastic resin 11. It is desirable to use the blending amount of

  If the amount of the wood-based filler 12 is too large, the bending elastic modulus of the decorative material will increase and the flexibility will be lost. Sometimes it becomes difficult to bend and apply the decorative material), and when it is bent, it becomes easy to break. On the other hand, if the amount is too small, the coefficient of linear expansion becomes large and the dimensional stability is lowered. Therefore, due to temperature changes, gaps between the makeup materials, floating due to the pushing up of the makeup materials, etc. may occur. It is a cause.

  In this invention, the shaping | molding method of the woody resin molding 1 and the foaming method in the case of making it foam are not restrict | limited in particular, A conventionally well-known method can be employ | adopted arbitrarily. Examples of the molding method include an extrusion molding method, a calendar molding method, an injection molding method, and a cast molding method. In addition, in the case of a multi-layer laminate having different expansion ratios, a plurality of types of foamable wood resin compositions with different amounts of foaming agent are separately molded by an extrusion molding method or an injection molding method, etc. Pasted together, sequential extrusion method or co-extrusion method using multiple types of expandable wood resin composition, continuous and stable in a single process using a single type of expandable wood resin composition Selca molding method that can be molded in a specific manner.

  In the present invention, when the wood resin molded body 1 is foamed to obtain a wood resin foam molded body, in addition to the thermoplastic resin 11 and the wood filler 12 described above, a foaming agent is added, Foaming (air bubbles 13 are introduced inside).

  Any known technique can be used as the foaming technique. In general, chemical foaming can be classified into chemical foaming, which generates gas by thermal decomposition or chemical reaction, and physical foaming, which heats a low-boiling point liquid to vaporize, and chemical foaming agents include inorganic sodium bicarbonate and carbonic acid. Ammonium, ammonium bicarbonate, ammonium nitrite, sodium borohydride, light metals, azide compounds, etc., and organic foaming agents such as azo, nitroso, hydrazide, etc. can be used in any combination.

  In particular, physical foaming is mainly used for foaming at a high foaming ratio exceeding 2 times, and carbon dioxide gas and aliphatic hydrocarbons are mainly used as foaming agents. In addition, a chemical foaming agent is often used in combination with physical foaming to adjust the cell shape of the foam.

  If the foaming ratio of the woody resin foam molded article is too low, the effect of foaming is poor, and if it is too high, the hardness required by radiation crosslinking cannot be obtained, so 1.1 to 10.0 times, more preferably Is preferably in the range of 1.3 to 8.0 times.

  In the present invention, the wood resin composition used for molding the wood resin molded body 1 includes a heat stabilizer, an acid neutralizer, an ultraviolet absorber, a light stabilizer, an anti-blocking agent, a dehydrating agent, a difficult agent, if necessary. A flame retardant, a lubricant, a nucleating agent, a pigment, a gloss adjusting agent, and the like can also be added.

  Among these additives, hindered phenols, sulfurs, phosphoruss, etc. as heat stabilizers, stearic acid metal salts, hydrotalcite, etc. as acid neutralizers, benzotriazoles, benzoates as ultraviolet absorbers, etc. Examples of light stabilizers such as benzophenone and triazine include hindered amines.

  Lubricants include hydrocarbons, fatty acids, higher alcohols, fatty acid amides, metal soaps, esters, fluorines, etc. Nucleating agents include carboxylic acid metal salts, sorbitol, phosphate ester metal salts, etc. Examples of pigments include condensed azo, insoluble azo, quinacridone, isoindolinone, anthraquinone, imidazolone, cobalt, phthalocyanine, carbon, titanium oxide, iron oxide, mica and other pearl pigments, and any combination of these additives. It is common to use in.

  In the present invention, the thermoplastic resin 11, the wood filler 12, the foaming agent and other additives constituting the wood resin composition are not particularly limited, but they are kneaded by a Banbury mixer and pelletized by a pelletizer. And a method of mixing and pelletizing with a twin-screw extrusion kneader. Moreover, since the wood type filler 12 will cause foaming at the time of pelletizing if the water content is large, it is desirable to suppress the water content to 8% or less in advance with a dryer or hopper dryer before kneading.

  The decorative material of the present invention is based on the wood resin molded body 1 described above, but an appropriate decorative sheet 2 can be laminated on the surface as necessary. The decorative sheet 2 can be arbitrarily selected from a natural wood veneer, a decorative paper based on paper, a decorative sheet based on a thermoplastic resin film, and the like. Considering the water resistance, weather resistance, recyclability, etc. required for the above, it is most desirable to use a decorative sheet made of a thermoplastic resin similar to the thermoplastic resin contained in the woody resin molded body 1. As the above-mentioned thermoplastic resin, it is important that the thermoplastic resin contained in the woody resin molded body 1 can be recycled without significant change in physical properties even when mixed.

  Specifically, for example, polyethylene, polypropylene, polybutene, polyisoprene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-α-olefin copolymer, propylene-α-olefin copolymer, ethylene- Ethyl acrylate copolymers, those modified with acid for the purpose of improving adhesion, ionomers, etc., or mixtures thereof, copolymers, and various polyolefin resins can be appropriately selected. It may be a laminate made of the same or different resins selected from the inside.

  The important points regarding the laminated decorative sheet 2 are that, as described above, the use of a thermoplastic resin similar to the thermoplastic resin 11 contained mainly in the wooden resin molded body 1, and the grain, stone, cloth, and abstract pattern Since the design is printed, the configuration of the decorative sheet 2 itself is not restricted at all.

  This decorative sheet 2 is, for example, a single-layer decorative sheet obtained by printing on a colored sheet, or a multilayer obtained by bonding a transparent sheet to a sheet obtained by printing on a colored sheet by a dry lamination method, an extrusion lamination method, a thermal lamination method, or the like. The decorative sheet, a back-printed single-layer decorative sheet printed on the back surface of the transparent sheet, and the like can be appropriately selected depending on the application.

  At this time, if the decorative sheet 2 has sufficient concealment, a stable design reproduction can be achieved. Conversely, if the decorative sheet 2 is transparent, it is possible to express the design utilizing the wood texture of the wooden resin molded body 1. become.

  The ink used for printing the pattern, pattern, coloring and the like of the decorative pattern 2 on the decorative sheet 2 is made of nitrified cotton, cellulose, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polyurethane, acrylic, polyester or the like alone or as a binder What is necessary is just to select suitably from each modified | denatured thing. These may be any of aqueous, solvent-based and emulsion types, and can be arbitrarily selected from a one-component type or a two-component type using a curing agent. Further, the ink can be cured by irradiation with ultraviolet rays or electron beams. Among them, the most general method is a method of curing with an isocyanate using a urethane-based ink.

  Besides these binders, colorants such as pigments and dyes, extender pigments, solvents, various additives and the like contained in normal inks are added. Particularly frequently used pigments include condensed azo, insoluble azo, quinacridone, isoindolinone, anthraquinone, imidazolone, cobalt, phthalocyanine, carbon, titanium oxide, iron oxide, mica and other pearl pigments.

  In any decorative sheet 2, a primer coat for bonding to the wood resin molded body 1, a top coat for surface protection and gloss adjustment, a conduit expression by an embossing method and a gloss mat method, and the like are applied. It does not matter. Moreover, the additive used for the thermoplastic resin layer in the decorative sheet 2 can be used as appropriate in the same manner as in the wood resin molded body 1.

  The thickness of the decorative sheet 2 is not particularly limited, but is usually in the range of about 0.05 to 0.3 mm. The lamination method of the decorative sheet 2 and the woody resin molded body 1 is not particularly limited. For example, a dry lamination method or a wet lamination method with an adhesive, a thermal lamination method with or without an adhesive, or an ultrasonic fusion method. Conventionally known methods such as, a high-frequency fusion method, and a simultaneous molding and laminating method in which the decorative sheet 2 is introduced into the cooling sizing mold at the same time as the extrusion molding of the wood resin molded body 1 are bonded together can be arbitrarily used.

  In the present invention, the surface of the wood resin molded body 1 on which the decorative sheet 2 is laminated does not necessarily refer to the entire surface including the upper surface, the lower surface, and the side surfaces, but is an exposed surface at the time of construction on at least a construction surface such as a floor surface. It is only necessary to be laminated on the upper surface. And as needed, it can also be set as the structure laminated | stacked continuously from the upper surface to a part or all of the side surface, or through the whole side surface to a part of the lower surface. When the decorative sheet 2 is laminated over at least part of the side surface, there is an advantage that the gap between the decorative materials is less noticeable after the construction.

  In particular, when the decorative material of the present invention is used as a flooring material, the lower surface of the wooden resin molded body 1 mainly comprises a thermoplastic resin similar to the thermoplastic resin 11 contained in the wooden resin molded body 1. A foaming layer may be laminated. With this configuration, the unevenness of the floor surface, which is the construction surface, is absorbed to prevent rattling, and the impact noise (falling sound) and walking sounds of articles on the floor surface are absorbed to prevent noise. There is an effect that can be.

  For the method of laminating the foamed layer, a known method can be used. For example, the thermal decomposition or chemical reaction is applied to the thermoplastic resin similar to the thermoplastic resin 11 used in the wood resin composition for molding the wood resin molded body 1. The foamed molded body, which is foam-molded into a sheet shape with a foaming agent of either a chemical foaming agent that generates gas or a physical foaming agent that vaporizes by applying heat to a low-boiling liquid, is formed on the back surface of the wooden resin molded body 1. It can be formed by bonding to a part or the whole.

  When recycling the decorative material of the present invention, even when the decorative sheet 2 is laminated on the surface, the decorative sheet 2 is crushed as it is without peeling and removed, and if necessary, a wooden filler 12, the thermoplastic resin 11, various additives, etc. are added suitably, it pelletizes again, and this can be reused as a molding material of the woody resin molding 1. Also in this case, the method for kneading the crushed material, the pelletizing method, the forming method, etc. is not particularly limited. Further, instead of re-pelletizing, the crushed material is directly put into a molding machine as a molding material for the wood resin molded body 1, or when the wood resin molded body 1 is molded, the crushed material and the wood-based filler 12 or the thermoplastic resin 11 are used. Of course, various additives and the like may be simultaneously charged into a molding machine and molded while being kneaded in the molding machine.

  100 parts by weight of a homopolypropylene resin obtained by adding 20% by weight of a maleic acid-modified polypropylene resin to a homopolypropylene resin, 30 parts by weight of an ethylene-norbornene copolymer, and the wood is broken by a cutter mill, and this is pulverized by a ball mill 100 parts by weight of a wood filler with an average particle size of 100 μm and a 5-part calcium stearate lubricant mixed by a biaxial extrusion kneader and pelletized to produce a wood resin composition did.

  3 parts by weight of triallyl isocyanurate and baking soda-citric acid foaming agent are added to 100 parts by weight of the woody resin composition, and the foaming ratio is 2.0 times by a Celca process using a single screw extruder. The wood resin foam molded body was produced by molding into a rectangular section with a thickness of 6 mm and a width of 300 mm, and further subjecting the surface to corona discharge treatment.

  On the other hand, 100 μm thick colored polypropylene sheet formed by blending random polypropylene with pigments such as iron oxide and titanium oxide is printed with urethane ink and homopolypropylene resin is 100 μm by extrusion lamination method. The laminate was embossed at the same thickness, and a primer coat was applied to the back surface and a top coat was applied to the front surface to produce a decorative sheet made of polypropylene resin. Thereafter, the decorative sheet was bonded to the surface of the wood resin foamed molded article by a lapping method to produce a flooring material which is a decorative material of the present invention.

  In the said Example 1, the compounding quantity of the ethylene-norbornene copolymer in the wood resin composition for shape | molding a wood resin foam molded object is increased from 30 weight part to 60 weight part, and other than that of the said Example 1 The floor material which is the decorative material of the present invention was produced in the same manner.

Comparative Example 1
In Example 1 above, the flooring material was prepared in the same manner as in Example 1 except that the ethylene-norbornene copolymer was not blended in the wood resin composition for molding the wood resin foam molded article. did.

Performance Comparison About the floor materials of Examples 1 and 2 and Comparative Example 1 produced as described above, surface hardness test (DD2 rubber hardness meter), caster resistance (nylon wheel, load 30 kg, 1 wheel, 200 reciprocations) and cutting When the performance evaluation was performed on the property (sensory evaluation of the cutting performance with a cutter knife), the results were as shown in Table 1 below. Regarding the machinability, the flooring materials of Examples 1 and 2 which are the decorative materials of the present invention can be easily cut with a cutter knife, and the effects of the present invention have been confirmed.

  Since the decorative material of the present invention is based on a wooden resin molded body containing a thermoplastic resin and a wooden filler, it is excellent in wood texture and recyclability, and is used for the thermoplastic resin used in the wooden resin molded body. As the resin contains (a) a copolymer obtained by copolymerizing an α-olefin and a cyclic olefin, and (b) a polyolefin resin other than the copolymer (a), higher cutting is achieved. A decorative material with added properties can be obtained, and simpler construction and processing are possible, including flooring materials in buildings such as houses, various building materials such as wall materials, ceiling materials, fittings, furniture materials, The range of use of decorative materials based on wood resin moldings can be expanded to a wider range of fields such as housing equipment and home appliances.

It is a sectional side view which shows embodiment of the decorative material of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wood resin molding 11 Thermoplastic resin 12 Wood type filler 13 Air bubble 2 Decorative sheet

Claims (2)

  Copolymer obtained by copolymerizing (a) an α-olefin and a cyclic olefin as the thermoplastic resin in a decorative material based on a wood resin molded article containing a thermoplastic resin and a wood filler. A cosmetic material comprising a coalescence and (b) a polyolefin resin other than the copolymer (a).   The cosmetic material according to claim 1, wherein the copolymer (a) is contained in an amount of 1 to 50 parts by weight based on 100 parts by weight of the polyolefin resin (b).

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