JP2009012453A - Process for producing artificial marble - Google Patents

Process for producing artificial marble Download PDF

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Publication number
JP2009012453A
JP2009012453A JP2008064389A JP2008064389A JP2009012453A JP 2009012453 A JP2009012453 A JP 2009012453A JP 2008064389 A JP2008064389 A JP 2008064389A JP 2008064389 A JP2008064389 A JP 2008064389A JP 2009012453 A JP2009012453 A JP 2009012453A
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Prior art keywords
crushed
marble
pieces
artificial marble
resin
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Katsuyuki Hasegawa
克之 長谷川
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Almighty:Kk
株式会社オールマイティー
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Priority to JP2008064389A priority patent/JP2009012453A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02Agglomerated materials, e.g. artificial aggregates
    • C04B18/022Agglomerated materials, e.g. artificial aggregates agglomerated by an organic binder
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02Selection of the hardening environment
    • C04B40/0259Hardening promoted by a rise in pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32Component parts, details or accessories; Auxiliary operations
    • B29C43/34Feeding the material to the mould or the compression means
    • B29C2043/3405Feeding the material to the mould or the compression means using carrying means
    • B29C2043/3427Feeding the material to the mould or the compression means using carrying means hopper, vessel, chute, tube, conveying screw, for material in discrete form, e.g. particles, powder, fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C43/06Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/54Substitutes for natural stone, artistic materials or the like
    • C04B2111/542Artificial natural stone
    • C04B2111/545Artificial marble

Abstract

<P>PROBLEM TO BE SOLVED: To produce an artificial marble exhibiting the appearance of natural marble. <P>SOLUTION: A marble stock made of a resin admixed with a colorant and kneaded into a uniform color is crushed, so as to be a granular shape, a flaky shape or a lumpy shape. A plurality of the crushed grains, crushed pieces and/or crushed lumps, different in color, are arranged on a molding face and pressurized, and the crushed grains, crushed pieces and/or crushed lumps are made to flow and are further mutually integrated, so as to obtain the artificial marble exhibiting the appearance of natural marble. The colorant may be kneaded into a spot pattern. Further, a surface layer of the colorant can be formed on each surface of the crushed grains, crushed pieces and/or crushed lumps. The resin as the marble stock is preferably admixed with a filler such as a hydrated metal compound and calcium carbonate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は人工大理石の製造方法に関し、特に天然大理石の外観を呈する人工大理石を製造するようにした方法に関する。   The present invention relates to a method for manufacturing artificial marble, and more particularly, to a method for manufacturing artificial marble exhibiting the appearance of natural marble.
天然の大理石(花崗岩)はその外観の優雅さから、壁材、床材、天板等に用いられているが、重量があり、又硬くて加工がし難く、さらには大きな寸法のものの入手が困難である、などの難点がある。   Natural marble (granite) is used for wall materials, flooring materials, top plates, etc. due to its elegant appearance, but it is heavy, hard and difficult to process, and is available in large sizes. There are difficulties such as being difficult.
他方、不飽和ポリエステル樹脂、ビニルエステル樹脂、熱硬化型アクリル樹脂、エポキシ樹脂等の熱硬化性樹脂に柄材を配合して金型に注入し、加熱硬化させて人工大理石を製造するようにした方法、メタクリル酸メチルを主成分とする重合性成分、水酸化アルミニウム、架橋性単量体及び着色顔料からなる組成物の重合硬化物を小粒子、中粒子、大粒子に破砕し、色調の異なる粒子を混合し、重合性成分、水酸化アルミニウム、架橋性単量体及び重合開始剤に配合して人工大理石を製造するようにした方法が知られている(特許文献1、特許文献2)。   On the other hand, an artificial marble is manufactured by blending a pattern material with a thermosetting resin such as unsaturated polyester resin, vinyl ester resin, thermosetting acrylic resin, epoxy resin, and injecting it into a mold, followed by heat curing. The method, the polymerized cured product of a composition comprising a polymerizable component mainly composed of methyl methacrylate, aluminum hydroxide, a crosslinkable monomer and a color pigment is crushed into small particles, medium particles and large particles, and the color tone is different. A method is known in which particles are mixed and blended with a polymerizable component, aluminum hydroxide, a crosslinkable monomer and a polymerization initiator to produce artificial marble (Patent Documents 1 and 2).
特開2007−83578号公報JP 2007-83578 A 特許第3192955号公報Japanese Patent No. 3192955
特許文献1、2記載の人工大理石では基材表面に絵柄フィルムを貼着するようにしたものに比して外観は優れているものの、天然大理石の外観に比較すると、依然として人造的な印象を与えるものであり、この点で改良の余地があった。   The artificial marble described in Patent Documents 1 and 2 has an appearance that is superior to that obtained by attaching a picture film to the substrate surface, but still gives an artificial impression when compared to the appearance of natural marble. There was room for improvement in this regard.
本発明はかかる問題点に鑑み、天然大理石の外観を呈する人工大理石を製造できるようにした人工大理石の製造方法を提供することを課題とする。   This invention makes it a subject to provide the manufacturing method of the artificial marble which enabled manufacture of the artificial marble which exhibits the external appearance of a natural marble in view of this problem.
そこで、本発明に係る人工大理石の製造方法は、着色剤を添加して均一な色彩に混練した樹脂製の大理石素材を粒状、片状又は塊状に破砕し、色彩の異なる複数の破砕粒、破砕片及び/又は破砕塊を成形面上に並べて加圧し、破砕粒、破砕片及び/又は破砕塊を流動させるとともに相互に一体化させ、天然大理石の外観を呈する人工大理石を得るようにしたことを特徴とする。   Therefore, in the method for producing artificial marble according to the present invention, a resin-made marble material kneaded into a uniform color by adding a colorant is crushed into granules, pieces or blocks, and a plurality of crushed particles having different colors, crushed The piece and / or the crushed lump are arranged and pressed on the molding surface, and the crushed particles, the crushed piece and / or the crushed lump are made to flow and integrated with each other to obtain an artificial marble exhibiting the appearance of natural marble. Features.
本発明に係る人工大理石の製造方法は、複数の着色剤を添加し斑模様になるように混合した樹脂製の大理石素材を粒状、片状又は塊状に破砕し、斑模様の複数の破砕粒、破砕片及び/又は破砕塊を成型面上に並べて加圧し、破砕粒、破砕片及び/又は破砕塊を流動させるとともに相互に一体化させ、天然大理石の外観を呈する人工大理石を得るようにしたことを特徴とする。   The method for producing artificial marble according to the present invention is a method of crushing a resin-made marble material mixed so as to form a spotted pattern by adding a plurality of colorants into a granular, piece-like or massive form, The crushed pieces and / or crushed lumps are arranged and pressed on the molding surface, and the crushed particles, crushed pieces and / or crushed lumps are made to flow and integrated with each other to obtain an artificial marble exhibiting the appearance of natural marble. It is characterized by.
また、本発明に係る人工大理石の製造方法は、樹脂製の大理石素材を粒状、片状又は塊状に破砕し、複数の破砕粒、破砕片及び/又は破砕塊の表面に着色剤の表面層を形成し、表面層の色彩の異なる複数の破砕粒、破砕片及び/又は破砕塊を成型面上に並べて加圧し、破砕粒、破砕片及び/又は破砕塊と着色剤を流動させるとともに、破砕粒、破砕片及び/又は破砕塊を相互に一体化させ、天然大理石の外観を呈する人工大理石を得るようにし
たことを特徴とする。
Moreover, the method for producing artificial marble according to the present invention comprises crushing a resin marble material into a granular, piece-like or lump shape, and providing a surface layer of a colorant on the surface of a plurality of crushed particles, crushed pieces and / or crushed lump. Form and crush a plurality of crushed grains, crushed pieces and / or crushed lumps with different colors on the surface layer on the molding surface to flow the crushed grains, crushed pieces and / or crushed lump and colorant, and crushed grains The crushed pieces and / or the crushed lumps are integrated with each other to obtain an artificial marble having the appearance of natural marble.
本発明の特徴は色彩の異なる複数の樹脂の破砕粒、破砕片及び/又は破砕塊を成形面に並べて加圧し、樹脂の破砕粒、破砕片及び/又は破砕塊を流動させるとともに、相互に一体化し、そのときに色彩(着色剤)を流動させるようにした点にある。   A feature of the present invention is that a plurality of resin crushed particles, crushed pieces and / or crushed lumps of different colors are arranged and pressed on the molding surface to flow the resin crushed particles, crushed pieces and / or crushed lumps, and integrated with each other. The color (colorant) is made to flow at that time.
色彩の異なる破砕粒、破砕片及び/又は破砕塊が流動し、あるいは破砕粒、破砕片及び/又は破砕塊が流動しながらそれらの境界部分で着色剤が流動すると、研磨した天然大理石の表面に現れる模様を呈する人工大理石が製造できる。   If crushed grains, crushed pieces and / or crushed lumpes of different colors flow, or if crushed grains, crushed pieces and / or crushed lump flow and colorant flows at the boundary between them, the surface of the polished natural marble Artificial marble with a pattern that appears can be manufactured.
着色剤を混合した大理石素材の破砕粒、破砕片及び/又は破砕塊の表面に着色剤の表面層を形成し、複数の破砕粒、破砕片及び/又は破砕塊を成型面上に並べて加圧し、破砕粒、破砕片及び/又は破砕塊と着色剤を流動させるとともに、破砕粒、破砕片及び/又は破砕塊を相互に一体化させ、天然大理石の外観を呈する人工大理石を得ることもできる。   A surface layer of a colorant is formed on the surface of a crushed grain, crushed piece and / or crushed lump of marble material mixed with a colorant, and a plurality of crushed particles, crushed pieces and / or crushed lump are arranged on a molding surface and pressed. In addition to flowing the crushed particles, crushed pieces and / or crushed lump and the colorant, the crushed particles, crushed pieces and / or crushed lump can be integrated with each other to obtain an artificial marble having the appearance of natural marble.
着色剤は原材料の樹脂に混合し樹脂の表面に表面層を形成できるものであればどのようなものでもよい。また、大理石素材の樹脂は例えばポリプロピレン、ポリエチレン、ポリ塩化ビニルなどの熱可塑性樹脂(生分解性プラスチックを含む)、あるいはアクリル樹脂、エポキシ樹脂などの熱硬化性樹脂を採用することができる。   Any colorant may be used as long as it can be mixed with the raw material resin to form a surface layer on the surface of the resin. As the marble resin, for example, thermoplastic resins (including biodegradable plastics) such as polypropylene, polyethylene, and polyvinyl chloride, or thermosetting resins such as acrylic resins and epoxy resins can be used.
さらに、大理石素材の樹脂にはフィラー状、粉状、粒状、片状又は塊状の充填剤を添加混合するようにしてもよい。例えば、水和金属化合物を添加することができ、これらは加熱によって化合物中の水分が分離して難燃性又は不燃性を付与できると考えられる。また、炭酸カルシウムを添加するようにしてもよい。   Furthermore, fillers in the form of fillers, powders, granules, flakes or lumps may be added to and mixed with the marble resin. For example, hydrated metal compounds can be added, and these can be considered to be able to impart flame retardancy or incombustibility by separating moisture in the compound by heating. Further, calcium carbonate may be added.
充填剤の量は特に限定されない。本件発明者の実験によれば全体の70重量%以上を添加しても問題なく製造できることが確認された。   The amount of the filler is not particularly limited. According to the experiments of the present inventors, it was confirmed that even if 70% by weight or more of the whole was added, it could be produced without any problem.
また、大理石素材の樹脂には生分解性プラスチックにはポリ乳酸系の生分解性プラスチック、脂肪族系ポリエステル系の生分解性プラスチック、加熱によって軟化溶融し得るその他の公知の生分解性プラスチックを用いることができる。   For the marble resin, polylactic acid-based biodegradable plastic, aliphatic polyester-based biodegradable plastic, and other known biodegradable plastics that can be softened and melted by heating are used. be able to.
特に、ポリ乳酸系の生分解性プラスチックの場合、加熱すると軟化して粘着性が増加することから、加熱したローラなどで加工することは難しいが、軟化したポリ乳酸系の生分解性プラスチックに充填剤、例えば水和金属化合物を添加し混合すると、生分解性プラスチックの粘着性が低下し、任意の形状に加工することが可能となる。   In particular, in the case of polylactic acid-based biodegradable plastics, it becomes difficult to process with a heated roller because it softens and increases its adhesiveness when heated, but it is filled with softened polylactic acid-based biodegradable plastics. When an agent such as a hydrated metal compound is added and mixed, the adhesiveness of the biodegradable plastic is lowered, and it becomes possible to process into an arbitrary shape.
大理石素材の樹脂と充填剤や着色剤は混練機で混合又は混練し、1軸又は2軸の押出機で混合しながら押し出すようにしてもよい。   The marble material resin and the filler or colorant may be mixed or kneaded by a kneader and extruded while being mixed by a single or twin screw extruder.
破砕は公知の破砕機を使用することができる。加圧は上下のローラで加圧してもよく、金型で加圧するようにしてもよい。   A known crusher can be used for crushing. The pressurization may be performed by upper and lower rollers, or may be performed by a mold.
以下、本発明を図面に示す具体例に基づいて詳細に説明する。図1は本発明に係る人工大理石の製造方法の好ましい実施形態を示す。人工大理石を製造する場合、水和金属化合物、例えば水酸化アルミニウムや水酸化マグネシウム、あるいは炭酸カルシウムを準備する。この水和金属化合物や炭酸カルシウムは平均外径10μm〜35μmの粉状のものを用いる。   Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. FIG. 1 shows a preferred embodiment of a method for producing artificial marble according to the present invention. When manufacturing artificial marble, a hydrated metal compound such as aluminum hydroxide, magnesium hydroxide, or calcium carbonate is prepared. As the hydrated metal compound or calcium carbonate, a powdery one having an average outer diameter of 10 μm to 35 μm is used.
また、大理石素材の樹脂、例えば適当な大きさのチップ状のポリプロピレンやポリエチレンなどの熱可塑性樹脂を準備する。これらの樹脂は1種でもよく、2種が混ざったものでもよい。また、ポリ乳酸系の生分解性プラスチックを大理石素材の樹脂としても用いることもできる。   Also, a marble resin, for example, a thermoplastic resin such as a chip-shaped polypropylene or polyethylene having an appropriate size is prepared. These resins may be one kind or a mixture of two kinds. Polylactic acid-based biodegradable plastics can also be used as a marble resin.
他方、混練機10の加熱ヒータを作動させ、混練機10内部を熱可塑性樹脂の溶融温度、例えば100°C〜300°Cの範囲内の温度まで上昇させておき、図1の(a)に示さ
れるように、破砕した熱可塑性樹脂のチップを混練機10内に投入し、攪拌しながら溶融させる。バインダー樹脂のチップの投入は一度に行ってもよく、複数回に分けて行ってもよい。バインダー樹脂の溶融中に攪拌羽根の回転による溶融樹脂の攪拌によって熱が発生する場合には加熱ヒータによる加熱温度はバインダー樹脂の溶融温度よりも多少低温であってもよい。
On the other hand, the heater of the kneading machine 10 is operated, and the inside of the kneading machine 10 is raised to a melting temperature of the thermoplastic resin, for example, a temperature in the range of 100 ° C. to 300 ° C., and FIG. As shown, the crushed thermoplastic resin chips are put into the kneader 10 and melted with stirring. Binder resin chips may be charged at once, or may be divided into a plurality of times. When heat is generated by stirring the molten resin by rotation of the stirring blade during melting of the binder resin, the heating temperature by the heater may be slightly lower than the melting temperature of the binder resin.
熱可塑性樹脂が十分に軟化又は溶融すると、準備した充填剤、例えば水和金属化合物や炭酸カルシウムを一度に又は複数回に分けて混練機10内に投入するとともに、着色剤、例えば塗料を一度に又は複数回に分けて混練機10内に投入し、軟化・溶融した熱可塑性樹脂と充填剤及び着色剤を実質的に均一になるように混練する。充填剤は一度に大量に投入すると、軟化・溶融した樹脂の温度が低下してしまうことがあるので、混練機10への投入前に複合素材の原料を予め加熱ヒータ等で適当な温度に加熱してもよい。   When the thermoplastic resin is sufficiently softened or melted, the prepared filler, for example, a hydrated metal compound or calcium carbonate, is charged into the kneader 10 at a time or divided into a plurality of times, and a colorant, for example, a paint is added at a time. Or, it is put into the kneader 10 in a plurality of times, and the softened and melted thermoplastic resin, the filler and the colorant are kneaded so as to be substantially uniform. If a large amount of filler is added at once, the temperature of the softened and melted resin may decrease, so the composite material is heated to an appropriate temperature with a heater or the like before being added to the kneader 10. May be.
また、熱可塑性樹脂を溶融状態のままで長時間加熱すると、樹脂本来の物性が損なわれることもあるので、十分に溶融した後、短時間で混練を完了させるのが好ましい。本件発明者の実験によれば、溶融してから混練が完了するまでの時間は5分〜30分程度が好ましいことが判明したが、加熱温度や熱可塑性樹脂の物性によって異なるので、最適な時間は実験などによって求めるのがよい。   Further, if the thermoplastic resin is heated for a long time in a molten state, the original physical properties of the resin may be impaired. Therefore, it is preferable to complete the kneading in a short time after sufficiently melting. According to the experiments of the present inventors, it has been found that the time from melting to completion of kneading is preferably about 5 to 30 minutes. However, the optimum time varies depending on the heating temperature and the physical properties of the thermoplastic resin. Should be obtained by experimentation.
十分な混練が済むと、図1の(b)(c)に示されるように、混練物20を取り出し、破砕機11で適切な寸法、例えば一辺が3mm〜40mmの大きさの粒状、片状又は塊状に破砕する。この破砕粒、破砕片又は破砕塊21の寸法は後の工程における加圧によって流動させるので特に限定されない。   After sufficient kneading, as shown in FIGS. 1 (b) and 1 (c), the kneaded product 20 is taken out and is crushed by a crusher 11, for example, in a granular or flaky shape with a side of 3 to 40 mm. Or crush into a lump. The size of the crushed particles, crushed pieces or crushed lump 21 is not particularly limited because it is caused to flow by pressurization in a later step.
同様にして図1の(d)に示されるように、色彩の異なる、例えば白色、黒色、茶色、青
色の破砕粒、破砕片又は破砕塊21を製造する。
Similarly, as shown in FIG. 1 (d), crushed grains, crushed pieces or crushed pieces 21 of different colors, for example, white, black, brown, blue, are produced.
こうして複数の色彩の破砕粒、破砕片又は破砕塊21が得られると、これらを成形面、例えば図1の(e)に示されるように、加熱した金型12の下型面上に並べ、上型で加熱す
る。すると、色彩の異なる熱可塑性樹脂が流動しながら相互に一体化するので、温度低下後、取り出し、表面を研磨すると、図1の(f)に示されるように、磨いた天然大理石の表
面の模様と思えるような模様を呈する人工大理石が得られる。
When crushed grains, crushed pieces or crushed lumps 21 of a plurality of colors are obtained in this way, these are arranged on the molding surface, for example, the lower mold surface of the heated mold 12 as shown in FIG. Heat with the upper mold. Then, since the thermoplastic resins of different colors are integrated with each other while flowing, when the surface is taken out after the temperature is lowered and the surface is polished, as shown in FIG. Artificial marble with a pattern that seems like that.
図2は第2の実施形態を示し、図において図1と同一符号は同一又は相当部分を示す。本例では混練機10において着色剤が均一になる前に混合を終了し、図2の(b)に示され
るように、マーブル状の混練物20’を製造し、これを破砕機11で破砕する。同様にして図2の(d)に示されるように、例えば白色、黒色、茶色、青色の色彩が斑模様になった
破砕粒、破砕片又は破砕塊21’を製造する。
FIG. 2 shows a second embodiment, in which the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In this example, mixing is finished before the colorant becomes uniform in the kneading machine 10, and as shown in FIG. 2B, a marble kneaded product 20 ′ is produced, and this is crushed by the crusher 11. To do. Similarly, as shown in FIG. 2 (d), for example, crushed grains, crushed pieces, or crushed lumps 21 ′ in which white, black, brown, and blue colors are patched are produced.
こうして複数の斑模様の破砕粒、破砕片又は破砕塊21’が得られると、後は同様に成形面に並べて加熱し加圧し、表面を研磨すると、磨いた天然大理石の表面の模様と思えるような模様を呈する人工大理石が得られる。   When a plurality of mottled crushed grains, crushed pieces or crushed lumps 21 'are obtained in this way, the surface pattern of the polished natural marble seems to be thought of when the surface is polished by arranging and heating and pressurizing in the same manner. An artificial marble with a unique pattern is obtained.
図3は第3の実施形態を示し、図において図1と同一符号は同一又は相当部分を示す。本例では混練機10に熱可塑性樹脂と充填剤とを投入して混練し、得られた混合物20''を破砕し、破砕粒、破砕片又は破砕塊21''と着色剤とを混練機に投入して破砕粒、破砕片又は破砕塊21''の表面に着色剤の表面層を形成し、例えば白色、黒色、茶色、青色の破砕粒、破砕片又は破砕塊22’を第1の実施形態と同様にして加熱し加圧し、表面を研磨すると、磨いた天然大理石の表面の模様と思えるような模様を呈する人工大理石が得られる。   FIG. 3 shows a third embodiment, in which the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In this example, a thermoplastic resin and a filler are put into a kneading machine 10 and kneaded. The resulting mixture 20 '' is crushed, and crushed particles, crushed pieces or crushed lump 21 '' and a colorant are kneaded. To form a surface layer of the colorant on the surface of the crushed particles, crushed pieces or crushed lump 21 '', for example, white, black, brown, blue crushed particles, crushed pieces or crushed lump 22 ' When the surface is polished by heating and pressurizing in the same manner as in the embodiment, an artificial marble having a pattern that seems to be a pattern of the surface of the polished natural marble is obtained.
図4は第4の実施形態を示し、図において図1及び図2と同一符号は同一又は相当部分を示す。本例では第1又は第2の実施形態における色彩の異なる、例えば白色、黒色、茶色、青色の破砕粒、破砕片又は破砕塊21又は斑模様の破砕粒、破砕片又は破砕塊21’を着色剤とともに混練機に投入し、破砕粒、破砕片又は破砕塊21、21’の表面に着色剤の表面層を形成し、得られた例えば白色、黒色、茶色、青色の破砕粒、破砕片又は破砕塊22''を第1の実施形態と同様にして加熱し加圧し、表面を研磨すると、磨いた天然大理石の表面の模様と思えるような模様を呈する人工大理石が得られる。   FIG. 4 shows a fourth embodiment, in which the same reference numerals as those in FIGS. 1 and 2 denote the same or corresponding parts. In this example, the color of the different colors in the first or second embodiment, for example, white, black, brown, blue crushed grains, crushed pieces or crushed lumps 21 or mottled crushed grains, crushed pieces or crushed lumps 21 'are colored. It is put into a kneader together with the agent, and a colorant surface layer is formed on the surface of the crushed particles, crushed pieces or crushed lumps 21 and 21 ′, and the obtained white, black, brown, blue crushed particles, crushed pieces or When the crushed lump 22 ″ is heated and pressurized in the same manner as in the first embodiment and the surface is polished, an artificial marble having a pattern that seems to be a surface pattern of the polished natural marble is obtained.
図5は上記各実施の形態による方法によって製造された人工大理石の外観を示す。   FIG. 5 shows the appearance of the artificial marble manufactured by the method according to each of the above embodiments.
なお、上記の例では破砕粒、破砕片又は破砕塊金型を用いて加圧したが、複数のローラ対を水平方向に並べ、上下のローラ列に例えばスチールベルトを掛け渡したローラ型プレス機を採用することもできる。   In the above example, pressurization was performed using crushed grains, crushed pieces, or crushed lump molds, but a roller type press machine in which a plurality of roller pairs are arranged in a horizontal direction and, for example, steel belts are suspended between upper and lower roller rows. Can also be adopted.
上記の実施形態による方法によって水酸化アルミニウム70重量%、ポリ乳酸系の生分解性プラスチック30重量%の人工大理石を製造したところ、表面が極めて平滑な人工大理石板が得られ、しかも厚みは1.5mm以上任意に設定することができた。   When an artificial marble made of 70% by weight aluminum hydroxide and 30% by weight polylactic acid-based biodegradable plastic was produced by the method according to the above embodiment, an artificial marble plate having an extremely smooth surface was obtained, and the thickness was 1. It was possible to arbitrarily set 5 mm or more.
また、ポリ乳酸系の生分解性プラスチックに代え、エチレン酢酸ビニル(EVA)を大理石素材の樹脂として用い、水酸化アルミニウム80重量%及びEVA20重量%からなる表面が極めて平滑な人工大理石が得られ、しかも厚みは1.5mm以上任意に設定することができた。   In addition, instead of polylactic acid-based biodegradable plastic, ethylene vinyl acetate (EVA) is used as a marble resin, and an artificial marble having an extremely smooth surface consisting of 80% by weight aluminum hydroxide and 20% by weight EVA is obtained. Moreover, the thickness could be arbitrarily set to 1.5 mm or more.
本発明に係る人工大理石の製造方法の好ましい実施形態を模式的に示す図である。It is a figure which shows typically preferable embodiment of the manufacturing method of the artificial marble which concerns on this invention. 第2の実施形態を模式的に示す図である。It is a figure which shows 2nd Embodiment typically. 第3の実施形態を模式的に示す図である。It is a figure which shows 3rd Embodiment typically. 第4の実施形態を模式的に示す図である。It is a figure which shows 4th Embodiment typically. 上記実施の形態によって得られた人工大理石の外観を示す図である。It is a figure which shows the external appearance of the artificial marble obtained by the said embodiment. 上記実施の形態によって得られた人工大理石の外観を示す図である。It is a figure which shows the external appearance of the artificial marble obtained by the said embodiment. 上記実施の形態によって得られた人工大理石の外観を示す図である。It is a figure which shows the external appearance of the artificial marble obtained by the said embodiment. 上記実施の形態によって得られた人工大理石の外観を示す図である。It is a figure which shows the external appearance of the artificial marble obtained by the said embodiment.
符号の説明Explanation of symbols
10 混練機
11 破砕機
12 金型
20、20’、20'' 混合物
21、21’,21''、22’ 破砕粒、破砕片、破砕塊
DESCRIPTION OF SYMBOLS 10 Kneading machine 11 Crusher 12 Mold 20, 20 ', 20''Mixture 21, 21', 21 '', 22 'Shredded grain, shredded piece, shredded lump

Claims (9)

  1. 着色剤を添加して均一な色彩に混練した樹脂製の大理石素材を粒状、片状又は塊状に破砕し、
    色彩の異なる複数の破砕粒、破砕片及び/又は破砕塊を成形面上に並べて加圧し、破砕粒、破砕片及び/又は破砕塊を流動させるとともに相互に一体化させ、天然大理石の外観を呈する人工大理石を得るようにしたことを特徴とする人工大理石の製造方法。
    A resin marble material kneaded into a uniform color by adding a colorant is crushed into granules, pieces or lumps,
    A plurality of crushed grains, crushed pieces and / or crushed lumps of different colors are arranged and pressed on the molding surface, and the crushed grains, crushed pieces and / or crushed lump are flowed and integrated with each other, giving a natural marble appearance. An artificial marble manufacturing method characterized in that an artificial marble is obtained.
  2. 複数の着色剤を添加し斑模様になるように混合した樹脂製の大理石素材を粒状、片状又は塊状に破砕し、
    斑模様の複数の破砕粒、破砕片及び/又は破砕塊を成型面上に並べて加圧し、破砕粒、破砕片及び/又は破砕塊を流動させるとともに相互に一体化させ、天然大理石の外観を呈する人工大理石を得るようにしたことを特徴とする人工大理石の製造方法。
    A resin marble material mixed with a plurality of colorants and mixed so as to form a patch pattern is crushed into granules, pieces or blocks,
    Plural crushed particles, crushed pieces, and / or crushed pieces of mottled pattern are arranged and pressed on the molding surface, and the crushed particles, crushed pieces, and / or crushed pieces are made to flow and integrated with each other to exhibit the appearance of natural marble. An artificial marble manufacturing method characterized in that an artificial marble is obtained.
  3. 上記大理石素材の破砕粒、破砕片及び/又は破砕塊の表面に着色剤の表面層を形成し、該複数の破砕粒、破砕片及び/又は破砕塊を成型面上に並べて加圧し、破砕粒、破砕片及び/又は破砕塊と着色剤を流動させるとともに、破砕粒、破砕片及び/又は破砕塊を相互に一体化させ、天然大理石の外観を呈する人工大理石を得るようにした請求項1又は2記載の人工大理石の製造方法。   A surface layer of a colorant is formed on the surface of the crushed particles, crushed pieces and / or crushed lump of the marble material, and the plurality of crushed particles, crushed pieces and / or crushed lump are arranged on the molding surface and pressed, The crushed pieces and / or crushed masses and the colorant are made to flow, and the crushed grains, crushed pieces and / or crushed masses are integrated with each other to obtain an artificial marble having the appearance of natural marble. 2. The method for producing artificial marble according to 2.
  4. 樹脂製の大理石素材を粒状、片状又は塊状に破砕し、複数の破砕粒、破砕片及び/又は破砕塊の表面に着色剤の表面層を形成し、
    表面層の色彩の異なる複数の破砕粒、破砕片及び/又は破砕塊を成型面上に並べて加圧し、破砕粒、破砕片及び/又は破砕塊と着色剤を流動させるとともに、破砕粒、破砕片及び/又は破砕塊を相互に一体化させ、天然大理石の外観を呈する人工大理石を得るようにしたことを特徴とする人工大理石の製造方法。
    Crushing resin-made marble material into granular, piece-like or lump form, forming a surface layer of a colorant on the surface of a plurality of crushed grains, crushed pieces and / or crushed lump,
    A plurality of crushed grains, crushed pieces and / or crushed pieces having different colors of the surface layer are arranged and pressed on the molding surface to flow the crushed grains, crushed pieces and / or crushed pieces and colorant, and crushed grains and crushed pieces. And / or a method for producing artificial marble, characterized in that artificial marble having an appearance of natural marble is obtained by integrating the crushed lumps with each other.
  5. 大理石素材の樹脂が熱可塑性樹脂である請求項1ないし4のいずれかに記載の人工大理石の製造方法。   The method for producing artificial marble according to any one of claims 1 to 4, wherein the resin of the marble material is a thermoplastic resin.
  6. 大理石素材の樹脂が生分解性プラスチックである請求項1ないし4のいずれかに記載の人工大理石の製造方法。   The method for producing artificial marble according to any one of claims 1 to 4, wherein the resin of the marble material is a biodegradable plastic.
  7. 破砕前の大理石素材の樹脂にフィラー状、粉状、粒状、片状又は塊状の充填剤を添加混合するようにした請求項1ないし4いずれかに記載の人工大理石の製造方法。   The method for producing artificial marble according to any one of claims 1 to 4, wherein a filler in a filler form, powder form, granular form, piece form or block form is added to and mixed with the resin of the marble material before crushing.
  8. 充填剤が水和金属化合物であり、該水和金属化合物によって難燃性又は不燃性を付与するようにした請求項6記載の人工大理石の製造方法。   The method for producing artificial marble according to claim 6, wherein the filler is a hydrated metal compound, and flame retardancy or nonflammability is imparted by the hydrated metal compound.
  9. 充填剤が炭酸カルシウムである請求項6記載の人工大理石の製造方法。   The method for producing artificial marble according to claim 6, wherein the filler is calcium carbonate.
JP2008064389A 2007-06-06 2008-03-13 Process for producing artificial marble Pending JP2009012453A (en)

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