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WO2004000521A1 - Procede de production de marbre artificiel possedant a la fois un motif granulaire et un motif strie - Google Patents

Procede de production de marbre artificiel possedant a la fois un motif granulaire et un motif strie Download PDF

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Publication number
WO2004000521A1
WO2004000521A1 PCT/JP2003/007595 JP0307595W WO2004000521A1 WO 2004000521 A1 WO2004000521 A1 WO 2004000521A1 JP 0307595 W JP0307595 W JP 0307595W WO 2004000521 A1 WO2004000521 A1 WO 2004000521A1
Authority
WO
WIPO (PCT)
Prior art keywords
curable composition
resin particles
artificial marble
pattern
comb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2003/007595
Other languages
English (en)
Japanese (ja)
Inventor
Masaaki Shibazaki
Kaori Fujita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Du Pont MRC Co Ltd
Original Assignee
Du Pont MRC Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Du Pont MRC Co Ltd filed Critical Du Pont MRC Co Ltd
Publication of WO2004000521A1 publication Critical patent/WO2004000521A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F9/00—Designs imitating natural patterns
    • B44F9/04—Designs imitating natural patterns of stone surfaces, e.g. marble
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/22—Making multilayered or multicoloured articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0002—Condition, form or state of moulded material or of the material to be shaped monomers or prepolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/002—Coloured
    • B29K2995/0021—Multi-coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/702—Imitation articles, e.g. statues, mannequins

Definitions

  • the present invention relates to a method for producing artificial marble having both grain patterns and stripe patterns.
  • artificial marble has been used as a component of, for example, a counter of a wash basin or a table top.
  • This artificial marble is usually produced by curing a curable composition.
  • a method of producing artificial marble having a pattern on the surface a method of mixing a different color synthetic resin material when injecting a liquid resin into a molding cell is disclosed in Japanese Patent Publication No. 59-15668, It is described in, for example, Japanese Unexamined Patent Publication No. 1-3117723.
  • these methods have a problem in that the appearance of the pattern is lacking in reproducibility.
  • artificial marble is often used by cutting the surface, but this cutting may cause the pattern to disappear or change significantly.
  • the difference in the curing speed and the difference in the physical properties between the materials is likely to occur. May decrease.
  • Japanese Patent Application Laid-Open No. H10-1288771 discloses a method of manufacturing artificial marble by laminating two or more layers of liquid resins of different colors, moving a comb-shaped member in a molding cell, and then curing. Is described. According to this method, a stripe pattern having a sharp appearance can be easily formed, and the pattern can be easily controlled.
  • Japanese Patent Application Laid-Open No. H10-3238488 discloses a comb-shaped member in which one or more layers of liquid resin of different colors are laminated on a layer of liquid resin in which a colorant is unevenly dispersed. A method for producing an artificial marble by moving the steel in a molding cell and then hardening is described.
  • the present invention has been made in order to easily and satisfactorily produce an artificial marble having an appearance that is more excellent than that of the above-mentioned conventional technology, for example, having a more luxurious granite tone.
  • an object of the present invention is to provide a three-dimensional appearance and texture of natural granite, a deep color pattern, a luxurious feeling, an appearance having a combination of grain pattern and stripe pattern, and these patterns can be formed. It is an object of the present invention to provide a method for producing artificial marble, in which the production of artificial marble is easy.
  • Another object of the present invention is to provide a method for producing artificial marble that can be formed continuously in the thickness direction and can exhibit a stripe pattern that does not disappear even when the surface is cut.
  • the present invention relates to a method for injecting a curable composition (A) containing 0.5 to 30% by mass of resin particles having a diameter of 0.1 to 5.0 mm into a molding cell, and injecting the curable composition.
  • the curable composition (A) is obtained by laminating one or more layers of the curable composition (B) of a different color on (A), and laminating a comb-like member while bringing its teeth into contact with the bottom surface of the molding cell.
  • (B) is a method for producing an artificial marble having both a grain pattern and a stripe pattern having a step of hardening after moving through the inside.
  • FIG. 1 is a schematic view illustrating an example of a step of moving a comb-shaped member in the present invention.
  • FIG. 2 is a schematic diagram illustrating an example of a comb-shaped member used in the present effort.
  • FIG. 3 is a perspective view showing the pan-shaped container used in the example of the present invention.
  • a plurality of curable compositions serving as raw materials for artificial marble are used.
  • the curable composition (A), which is injected first and forms the bottom layer, is a significant product base. It has the following color tone.
  • This curable yarn composition (A) contains 0.5 to 30% by mass of resin particles having a diameter of 0.1 to 5.0 mm based on the mass of the curable composition (A).
  • the composition of the resin particles is not particularly limited, but is preferably substantially the same as the composition of the portion other than the resin particles in the curable composition (A).
  • a typical example is a syrup, which is a mixture of a monomer such as methacrylic acid ester and a polymer thereof, and a filler, a coloring agent, a curing initiator, etc., and the mixture is cured.
  • the amount of the syrup constituting the resin particles is preferably 20 to 60% by mass based on the mass of the resin particles. Further, the amount of the filler constituting the resin particles is preferably 40 to 80% by mass based on the mass of the resin particles.
  • the filler examples include an inorganic filler such as aluminum hydroxide, magnesium hydroxide, and calcium hydroxide, and an organic filler such as wood flour. Further, it is preferable that the particles are colored.
  • the coloring agent used for this purpose include, for example, inorganic pigments such as titanium oxide, zinc sulfide, barium sulfate, iron oxide, carbon black, red iron, red, cadmium red, cobalt blue, and cobalt purple; and phthalocyanine and azo-based pigments. And triphenyl methane-based, quinoline-based organic pigments.
  • various components conventionally known as additive components of artificial marble for example, dyes, ultraviolet absorbers, flame retardants, release agents, fluidizers, thickeners, polymerization inhibitors, acids It is also possible to add an inhibitor.
  • a preferred example of the method for producing the resin particles is a method in which a composition comprising these components is cured and then the hardened material is ground.
  • the grinding means include a ball mill, a rod mill, a tower-type grinder, a vibration mill, a mouth mill, a brake crusher, a roll crusher, and a hammer mill. These crushing means may be used in combination.
  • the diameter of the resin particles is in the range of 0.1 to 5.0 mm. If the diameter is set to 0.1 mm or more, satisfactory aesthetic properties can be obtained in artificial marble, which is a polymerized and cured composition. However, when the diameter is larger than 5.0 mm, for example, when resin particles having a diameter of about 5.0 mm to 15.0 mm are present, impact resistance, heat crack resistance, etc. tend to be deteriorated. .
  • the diameter of the resin particles should be in the range of 0.1 to 3.0 mm. Preferably, there is.
  • the particles are classified after fine powdering, and then divided into fine particles and coarse particles.
  • fine powdering By blending the particles of each color tone into fine particles and coarse particles, a deeper color tone and appearance can be obtained. Further, by changing the mixing ratio of the two, it becomes easy to adjust the appearance of the artificial marble.
  • the content of the resin particles in the curable composition (A) is in the range of 0.5 to 30% by mass based on the mass of the curable composition (A). This amount is 0.5 mass. If the ratio is less than / 0 , the grain pattern is too small, which is not preferable in appearance. Also, when the content exceeds 30% by mass, appearance is not preferable, and characteristics such as impact resistance and heat crack resistance tend to deteriorate. A more preferred content is 3 to 20% by mass.
  • the composition of the portion other than the resin particles in the curable composition (A) is not particularly limited.
  • a typical example is a syrup, which is a mixture of a monomer such as methacrylic acid ester and its polymer, and a filler, a colorant, a curing initiator, and the like added thereto.
  • the amount of the syrup is preferably 30 to 70% by mass based on the mass of the portion other than the resin particles in the curable composition (A).
  • the amount of the filler is preferably 30 to 70% by mass based on the mass of the portion other than the resin particles in the curable composition (A).
  • Examples of the filler include inorganic fillers such as hydroxyaluminum, magnesium hydroxide, calcium hydroxide, and organic fillers such as wood flour.
  • Examples of the colorant include white titanium oxide and zinc sulfide, yellow iron oxide yellow, black iron oxide black, red iron oxide red, blue ultramarine blue and phthalocyan blue.
  • Examples of the curing catalyst include tertiary butyl peroxymaleic acid, benzoyl peroxide, tamen hydroperoxide, tertiary butyl phenol dropperoxide, tertiary butyl lauroyl, and azobisisobutyrate.
  • additive components of artificial marble for example, dyes, ultraviolet absorbers, flame retardants, release agents, fluidizing agents, thickeners, polymerization inhibitors, acids An anti-diding agent and the like can also be added.
  • a preferred example of the curable composition (A) is a hardening composition in which a colorant is dispersed non-uniformly.
  • Such heterogeneous dispersion compositions may, for example, be deposited in the composition. It can be produced by adding a coloring agent and stirring insufficiently. The degree of uneven dispersion of the colorant can be changed according to the appearance requirements of each product, but at least the colorant is uniformly dispersed in the curable composition (A) visually. It just needs to be able to recognize that it is not. When such a heterogeneous dispersion composition is used, the quality of the obtained artificial marble is improved, and a more natural appearance can be obtained.
  • the injection of the heterogeneous dispersion composition into the molding cell can be carried out by various methods, but the heterogeneous dispersion composition imparts a unidirectional flow direction to the flow pattern of the composition having the superiority of the product. It is preferable that it is performed in the same manner as described above, and coincides with the direction of movement of the comb-like member described later.
  • the method for injecting the heterogeneous dispersion composition a method in which the supply container for the heterogeneous dispersion composition is relatively moved in one direction with respect to the molding cell and injects the same.
  • composition of the curable composition (B) used in the present invention is not particularly limited.
  • a typical example is a syrup which is a mixture of a monomer such as methacrylic acid ester and a polymer thereof, and a filler, a colorant, a curing initiator and the like added thereto.
  • the amount of the syrup is preferably from 20 to 60% by mass based on the mass of the curable composition (B).
  • the amount of the filler is preferably 40 to 80% by mass based on the mass of the curable composition (B).
  • the filler, the colorant, the curing catalyst, and other various components the same as the specific examples described above for the curable composition (A) can be given.
  • the curable composition (B) may or may not contain resin particles.
  • the diameter of the resin particles is preferably not more than 5.0 mm. If this diameter is greater than 5. O mm, for example 5. ⁇ ⁇ ! When resin particles having a diameter of about 15 mm are present, impact resistance, heat crack resistance, and the like tend to deteriorate.
  • the content is preferably 30% by mass or less based on the mass of the curable composition (B). If this amount exceeds 30% by mass, the properties such as impact resistance and heat crack resistance tend to deteriorate. A more preferable content is 20% by mass or less.
  • a curable composition (A) containing resin particles is injected into a molding cell to form a lowermost layer.
  • a curable composition (B) of a different color is layered.
  • the curable composition having a different color referred to in the present invention refers to a curable composition having a different color tone, that is, a curable composition having at least one of different coloring concentrations and hues.
  • at least two types of curable compositions having different colors are used. That is, three or more different-color curable compositions (A) and (B) may be laminated in three or more layers.
  • the curable compositions (A) and (B) are laminated with a uniform thickness over the entire surface in the cell in order to control the appearance of a power pattern.
  • the lamination thickness of the curable compositions (A) and (B) is not particularly limited, but the thickness of each layer is preferably about 2 to 20 mm.
  • the thickness of the lower layer of the curable composition (A) is appropriately reduced, when the teeth of the comb-shaped member are moved while being in contact with the bottom surface of the molding cell, the upper layer of the curable composition ( B) is preferred because it is easier to reach the bottom of the cell.
  • it is preferable to appropriately increase the thickness of the lower layer of the curable composition (A) because the pattern is less likely to be disturbed and the control is easy, and the limitation on the thickness of the artificial marble is eased.
  • the viscosity of the curable composition that has a particularly great influence on the method of the present invention.
  • One preferable example of the viscosity is a value in the range of 0.3 to 5.0 Pa ⁇ s.
  • the comb-like member is cured while the teeth thereof are brought into contact with the bottom surface of the molding cell.
  • the compositions (A) and (B) are moved in a carded fashion.
  • the exaggerated expression indicates that the curable composition (A) is present at the mark where the teeth of the comb-like member have passed.
  • Displaced depressions are formed, into which the different-color curable composition (B) of the upper layer flows. This allows the comb
  • the upper layer of the curable composition (B) of a different color penetrates the traces of the teeth of the comb-shaped member up to the bottom of the cell. Will be formed.
  • FIG. 1 is a schematic diagram showing an example of the step of moving the comb-like member in the curable composition as described above.
  • a curable composition (A) 2 containing resin particles is formed as a lower layer, and a curable composition (B) 3 of a different color is formed on the lower layer to form a laminate.
  • the teeth of the comb-shaped member 1 are immersed in both layers to the bottom surface of the lower layer, and the curable composition (B) 3 of the upper layer having a different color flows into the traces of the teeth so as to flow to the bottom surface. Is moving.
  • the curable composition (B) of a different color in the upper layer flows into the trace of passage of the teeth of the comb-like member, and only the curable composition (A) in the lower layer flows there.
  • the stripe pattern is not formed if it is inserted. Therefore, it is necessary that a depression can be formed in the trace of the passage of the tooth.
  • Various factors such as the viscosity of the curable compositions (A) and (B), the moving speed of the comb-like member, the shape of the comb-like member, and the like are interrelated to the occurrence of the depression. Therefore, the conditions for successfully generating the depression are not determined uniformly, but may be determined as appropriate according to various conditions.
  • the moving speed of the teeth of the comb member is important in relation to the viscosity of the curable compositions (A) and (B). If the moving speed of the teeth is too slow, no depression can be formed in the trace of the passage of the teeth, so that the upper layer of the different-color curable yarn (B) cannot reach the bottom of the cell, and a stripe pattern cannot be formed.
  • the moving speed of the comb-like member is preferably about 1 to 10 cmZ seconds.
  • a comb-shaped member is moved linearly to form a linear stripe pattern, but this can be meandered and moved to form a meandering stripe pattern.
  • the comb member can also be moved multiple times. This is a preferred embodiment of the method of the present invention, because the stripe pattern fluctuates and changes in spacing when moved a plurality of times, and an artificial marble with a natural taste is obtained.
  • FIG. 2 is a schematic diagram illustrating an example of a comb-shaped member used in the present invention.
  • the comb-shaped member 4 shown in FIG. 2 includes a plurality of strip-shaped teeth 4 arranged in a line in parallel at desired intervals, and a portion connecting one end of the plurality of teeth 4.
  • the length of the teeth of the comb-like member is sufficiently longer than the total number of layers of the entire curable composition so as not to cause unnecessary disturbance of the upper curable composition (B). Is appropriate.
  • the width of the teeth (the length perpendicular to the direction of movement of the teeth) is preferably l to 20 mm. The width of the teeth does not correspond to the width of the stripe to be formed, but does affect it.
  • the thickness of the teeth (the length in the direction of movement of the teeth) may be any thickness that maintains the mechanical strength of the teeth, and does not significantly affect the formation of the stripe pattern.
  • the cross-sectional shape of the tooth is not very streamlined, and a square shape that generates turbulence in the curable composition in the trace of the passage of the tooth is appropriate.
  • the shape of the tip of the tooth preferably has a flat surface so as to be able to adhere to the bottom surface of the molding cell. If there is no need to move many times, the number of teeth may be one, and an appropriate number of teeth may be selected according to a desired stripe pattern.
  • the curable compositions (A) and (B) are cured after the comb-shaped member is moved to form a stripe pattern on the bottom surface of the layer of the curable composition (A). Then, the hard marriage product is taken out of the molding cell to obtain an artificial marble.
  • the artificial marble has a stripe pattern on the surface in contact with the cell bottom. Since this stripe pattern is formed based on fluid mixing of curable compositions of different colors, it is a stripe pattern of a line having a natural fluctuation different from that drawn by a rule. Furthermore, according to the present invention, due to the combination of the color and pattern of the stripe and the color and size of the resin particles contained in the curable composition (A), An entirely new look can be provided.
  • the embodiment based on the batch-type casting method has been mainly described, but the method based on the continuous-type cast molding method is also possible.
  • the continuous cast molding method for example, a stainless steel belt moving as a cell and a frame for damping a curable composition made of rubber, resin or the like provided on both sides thereof are used. That is, in the present invention, the comb-shaped member is stationary and fixed, and the comb-shaped member is moved in the curable composition by moving the stainless steel belt side (molding cell side). You may make it move oppositely.
  • the surface of the artificial marble thus obtained, it is possible to obtain a granite-like appearance that is more taller and of higher commercial value.
  • the depth of the surface grinding varies depending on the size of the resin particles added, it is preferable to perform the grinding at a depth equal to or larger than the radius of the largest particle.
  • the artificial marble obtained according to the present invention can be used for various purposes, such as kitchen tops, washstands, shadesabs, tables, wall materials, furniture, and interior accessories in houses.
  • the cured product is cut into small pieces with a cutting machine, ground with a hammer mill, and separated by a sieve to obtain white 1-grease particles (P 1) having a diameter of more than 0.5 mm and not more than 1.7 mm,
  • white resin particle (P2) having a diameter of 1 mm or more and 0.5 mm or less was obtained.
  • White resin particles (P 3) having a diameter of 1.7 mm or more and 3.0 mm or less, and a diameter of 0.1 mm or more and 0.5 mm or less in the same manner as in Production Example 1 except for using each component of Formulation 2 shown in Table 1.
  • white 2 resin particles (P4) having a size of not more than mm were obtained.
  • Black resin particles (P5) having a diameter of 0.1 mm or more and 0.5 mm or less were obtained in the same manner as in Production Example 1 except that each component of Formulation 3 shown in Table 1 was used.
  • the curable composition (A1) prepared as described above was injected into a 30 cm square tray-shaped molding cell in a layered manner so as to have a thickness of 7 mm.
  • the curable composition (B1) was first transferred to one pan-shaped container shown in FIG. Then, the curable composition (B1) in this container was injected onto the previously injected curable composition (A1) without breaking the interface, and an upper layer having an injection thickness of 7 mm was laminated and formed. .
  • the comb-shaped member 1 having the shape shown in FIG. 2 was immersed in one end of the molding cell, and the teeth were moved at a distance of 50 mm / cm2 toward the other end while contacting the bottom surface of the molding cell.
  • This comb-shaped member 1 was made of a polytetrafluoroethylene plate having a thickness of 3 mm. The tooth width is 5mm and the tooth spacing is 25mm. After the movement of the comb-like member, the molding cell was covered, and left for 30 minutes while keeping the temperature, thereby obtaining a sheet-like cured product.
  • the stiffening composition (A 2) prepared as described above was injected into a 30 cm square tray-shaped molding cell in the same manner as in Example 1.
  • the curable composition (B1) was also laminated on the curable composition (A2) in the same manner as in Example 1, and the comb-like member was moved and cured in the same manner as described above, and was polished with a planar paper. After polishing, artificial marble with both subtle hue, depth, and texture was obtained.
  • Example 2 a thin film containing white 1 resin particles (Pl, P2), white 2 resin particles (P3, P4), black resin particles (P5), and brown resin particles (P6)
  • a black curable composition (A2) was prepared, and a half of the curable composition (A2) was separated and placed in a 30 cm square tray-shaped mold so as to have a thickness of 7 mm. It was poured in layers.
  • Example 2 (A2) was laminated in the same manner as in Example 1, and the comb-like member was moved and cured in the same manner as described in Example 1, and was polished with a sandpaper and polished with sandpaper to have both a grain pattern and a stripe pattern. An artificial marble with subtle shades, depth and texture was obtained.
  • a curable composition (A2) was prepared. A half of this curable composition (A2) is taken, and 0.03 g of a colorant composition [black pigment (manufactured by Pencolor, trade name 11B1513) and 9.97 g of syrup are mixed well. While stirring the mixture for 10 seconds with a stirring bar so as not to mix completely, to prepare a curable composition (A3) with incomplete mixing. The appearance of this curable composition (A3) had spots of light black and dark black.
  • the curable composition (A3) was injected into a 30 cm square tray-like mold so as to have a thickness of 7 mm and while being moved in one direction in a layered manner with respect to the molding cell.
  • a gray curable composition (B2) was obtained in the same manner as in Example 3 using the remaining one-half curable composition (A2).
  • This curable composition (B 2) was laminated on the curable composition (A 3) in the same manner as in Example 1, and a comb-like member was similarly formed on the curable composition.
  • the combination of the grain size and color and the stripe pattern color pattern has, for example, a three-dimensional effect and texture of natural granite, a deep color pattern, It is possible to easily and satisfactorily produce artificial marble having an excellent appearance such as a granite-like appearance.
  • the stripe pattern is formed continuously also in the thickness direction of the artificial marble, the pattern does not disappear even if the surface of the artificial marble is cut. Further, by controlling the shape of the teeth of the comb-shaped member and the moving direction of the teeth, the width of the stripe pattern and the running direction can be adjusted. Furthermore, if the components of the base portion and the stripe handle portion of the artificial marble are almost the same, there is no reduction in the mechanical properties of the artificial marble due to the provision of the handle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de production de marbre artificiel possédant à la fois un motif granulaire et un motif strié, comprenant les étapes consistant à couler une composition durcissable (A) contenant 0,5 à 30 % en poids de particules de résine possédant un diamètre compris entre 0,1 et 5 mm (2) dans une cellule de moulage; à superposer en couche au moins une couche d'une composition durcissable (B) de couleur différente (3) sur la composition durcissable coulée (A) (2); à déplacer un élément pectiné (1) dans la composition durcissable stratifiée (A) (2) et la composition durcissable (B) (3) tout en conservant la dent de l'élément pectiné (1) en contact avec la surface de fond de la cellule de moulage; et à durcir les compositions.
PCT/JP2003/007595 2002-06-24 2003-06-16 Procede de production de marbre artificiel possedant a la fois un motif granulaire et un motif strie Ceased WO2004000521A1 (fr)

Applications Claiming Priority (2)

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JP2002-183044 2002-06-24
JP2002183044A JP2004025538A (ja) 2002-06-24 2002-06-24 粒柄とストライプ柄の両方を有する人工大理石の製造方法

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Publication number Priority date Publication date Assignee Title
JP2005335121A (ja) * 2004-05-25 2005-12-08 Matsushita Electric Works Ltd 樹脂成形品製造方法およびその方法により製造された樹脂成形品

Citations (4)

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Publication number Priority date Publication date Assignee Title
US6306321B1 (en) * 1997-05-26 2001-10-23 Du Pont-Mrc Co., Ltd. Method for producing artificial marble having stripe patterns
JP2001293732A (ja) * 2000-04-12 2001-10-23 Matsushita Electric Works Ltd 人造大理石の製造方法
US20020011686A1 (en) * 1998-03-31 2002-01-31 Nobuhiro Mukai Method of manufacturing artificial marble having stripe pattern
JP2002036260A (ja) * 2000-07-26 2002-02-05 Matsushita Electric Works Ltd 人造大理石の製造方法

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