JP2004275263A - Counter having bowl with high designability - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a counter having a bowl with high designability which is excellent in transparency just like a glass handicraft article. <P>SOLUTION: For this counter having the bowl with high designability, the bowl part and the counter section are integrally molded of the same material being excellent in transparency, and the counter having the bowl with high designability has coloring layers on the rear surface. The coloring layer on the rear surface of the counter section and the coloring layer on the rear surface of the bowl part are constituted of different color formations. Preferably, the counter having the bowl with high designability is constituted in such a manner that the material is a radical setting type molding material comprising (A) a polymerizable unsaturated monomer containing thermosetting resin, and (B) a polyisocyanate compound, and the molding is performed by a press-molding method, and preferably, the total content of (A) and (B) in the molding material is 80 wt.% or higher. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a counter with a high-design bowl having a taste of glass crafts.
[0002]
[Prior art]
Fiber-reinforced thermosetting resin (hereinafter, referred to as FRP) has many features such as lighter weight, superior strength, and excellent corrosion resistance than metal, and industrial members such as bathtubs, septic tanks, and other housing members, and pipes. And various electric parts.
[0003]
There are many types of such FRP molding methods, one of which is a press molding method. This press molding method is a method in which an FRP molding material is charged into a mold heated to a predetermined temperature and pressurized and heated and hardened by a press machine. The material loss is small, the productivity is high, and the working environment is low. It has many advantages over other FRP molding methods, such as good, and is widely used in the production of FRP products.
[0004]
As such an FRP molding material, a sheet molding compound (hereinafter, referred to as SMC), a bulk molding compound (hereinafter, referred to as BMC), or the like is generally used. Among these, BMC is excellent in appearance and design, so it is widely used in artificial marble-related applications such as bathtubs, vanities, kitchen counters, etc. To respond, various types of products with regard to colors and patterns have been developed. As the color and pattern of such BMC, artificial marble with a stone pattern tone such as sandstone tone or granite tone is predominant, but all have similar appearance design and lack novelty.
[0005]
On the other hand, in terms of external design, in recent years, designs in which transparent materials are coordinated for home appliances and interiors have gained popularity.
Typical examples of the material of the transparent material include thermoplastic resins such as polystyrene, polycarbonate, and polyethylene terephthalate, and glass.
[0006]
However, such a thermoplastic resin is generally vulnerable to high temperature and hot water, and has problems such as difficulty in molding a large size. Therefore, as a material for artificial marble-related applications such as bathtubs, vanities, kitchen counters, and the like. Is inappropriate.
[0007]
Further, in the case of glass, it is limited to a simple flat plate shape, and it is not possible to cope with a large-sized molded product having a complicated shape such as a counter with a bowl. Further, it is considerably difficult to obtain a transparent molded product by using the above-mentioned SMC and BMC, and it has not been put to practical use yet.
[0008]
[Problems to be solved by the invention]
An object of the present invention is to provide a high-designed bowl-equipped counter having excellent transparency in the form of glass crafts.
[0009]
[Means for Solving the Problems]
The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have completed the present invention.
That is, the present invention is a counter with a bowl in which a bowl portion and a counter portion are integrally formed of the same transparent material, and has a coloring layer on the back surface, wherein the coloring layer on the back surface of the counter portion and the coloring on the back surface of the bowl portion are provided. An object of the present invention is to provide a counter with a high-design bowl, wherein the layers are formed in different colors.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail.
The counter with a bowl according to the present invention comprises a flat plate-shaped counter as shown in FIG. 1 and a bowl through which water can flow.
The positional relationship between the bowl portion and the counter portion is not particularly limited, but usually, the bowl portion is often arranged in the middle. Further, a counter having a plurality of bowl portions is also included in the present invention.
[0011]
The bowl portion and the counter portion of the bowl-equipped counter of the present invention are made of the same transparent material, and have an effect that transparency is good. Further, the bowl portion and the counter portion are formed integrally, and by being integrally formed, the bowl portion and the counter portion are seamless and robust.
Further, the counter with a bowl of the present invention has a coloring layer on the back surface, but having this coloring layer has an effect that coloring can be performed freely without impairing transparency. This colored layer has a different color tone between the bowl portion and the counter portion, and can provide accents of a plurality of colors, so that the appearance is more excellent in terms of design.
[0012]
The colored layer is formed by, for example, a method of applying a colored paint on the back side of the above-mentioned counter with a bowl, a method of attaching a colored sheet, or a method of backing up with a colored reinforcing material. It is possible to form a colored layer in advance by applying a colored paint on the surface of the lower mold, and apply heat and pressure to the mold with a press machine using the molding material described above to simultaneously form the molding material and the colored layer. It is preferable that they are integrally molded.
[0013]
The transparent material is a radical curable system containing (A) a polymerizable unsaturated monomer, (B) a thermosetting resin having a hydroxyl group and an ethylenically unsaturated double bond in a molecule, and (C) a polyisocyanate compound. It is preferably a molding material.
Examples of the polymerizable unsaturated monomer (A) used in the present invention include styrene, vinyl toluene, chlorostyrene, α-methylstyrene, tert-butylstyrene, divinylbenzene, methyl methacrylate, and vinyl acetate. .
[0014]
Examples of the thermosetting resin having a hydroxyl group and an ethylenically unsaturated double bond in the molecule (B) used in the present invention include, for example, unsaturated polyester resin, vinyl ester resin, acrylic resin, diallyl phthalate resin and the like. Can be Among these, a vinyl ester resin (epoxy acrylate, unsaturated polyester acrylate) having a ratio of hydroxyl value to acid value, that is, a ratio of hydroxyl value / acid value of 10 or more is preferable.
[0015]
The polyisocyanate compound (C) used in the present invention refers to a compound having at least two isocyanate groups in a molecule. Among them, particularly typical ones are tetramethylene diisocyanate, hexamethylene diisocyanate, Diisocyanates such as 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, diphenylmethane-4,4'-diisocyanate, polyfunctional polyisocyanates such as polymethylene polyphenylene polyisocyanate, or dimers or trimers of these diisocyanates And oligomers such as monomers. Further, a prepolymer of a terminal isocyanate, which is a reaction product of the above-mentioned various isocyanate compounds and an active hydrogen compound, may also be used.
[0016]
The blending ratio of (B) the thermosetting resin having a hydroxyl group and an ethylenically unsaturated double bond in the molecule and (C) the polyisocyanate compound is not particularly limited, but (B) the hydroxyl group in the thermosetting resin It is preferable to use the (C) polyisocyanate compound in an amount corresponding to the amount of active hydrogen (e.g., 0.3 to 0.7 times the amount of active hydrogen (NCO / OH) corresponding to the amount of isocyanate groups).
[0017]
The radical-curable molding material used in the present invention comprises (A) a polymerizable unsaturated monomer, (B) a thermosetting resin having a hydroxyl group and an ethylenically unsaturated double bond in a molecule, and (C) a polyisocyanate. Those having a total content of the compounds of 80% by weight or more are preferred. If the total content is less than 80% by weight, the object of the present invention cannot be achieved because the transparency is considerably reduced.
[0018]
A peroxide curing agent is preferably added to the radical curing molding material used in the present invention. Other known additives as required, for example, a urethanization catalyst such as dibutyltin dilaurate, an internal release agent such as zinc stearate, an inorganic filler such as aluminum hydroxide, a reinforcing material such as glass fiber, a pattern material, and an ultraviolet ray. An absorbent, a pigment, a viscosity reducing agent, a low-shrinking agent, an antioxidant, a plasticizer, a flame retardant, a stabilizer and the like can be added.
[0019]
The radical-curable molding material used in the present invention comprises (A) a polymerizable unsaturated monomer, (B) a thermosetting resin having a hydroxyl group and an ethylenically unsaturated double bond in a molecule, and (C) a A rubber-like molding material is obtained by mixing an isocyanate compound and additives.
[0020]
The counter with a bowl of the present invention can be obtained simply and stably by heating and press-forming the above-mentioned radical-curable molding material with a press machine. Press molding conditions are similar to the general SMC and BMC press molding conditions, the molding temperature is preferably 40 to 180 ° C., the molding pressure is preferably 1 to 20 MPa, and the pressing time is preferably 1 to 60 minutes. However, it may be appropriately selected depending on the composition of the molding material to be used, the shape and size of the molded product, and the like.
[0021]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. “Parts” and “%” in the text are based on weight unless otherwise specified.
[0022]
[Example 1]
Dicklight UE-3505 [vinyl ester resin (epoxy acrylate / styrene monomer solution), hydroxyl value / acid value of resin solids = 16, product of Dainippon Ink and Chemicals, Inc.] 100 parts, hexamethylene diisocyanate 10 parts (NCO /OH=0.57), 0.03 parts of DABCO T-9 [catalyst, product of Air Products Japan K.K.], 0.5 parts of Trigonox 121-50 [hardening agent, product of Kayaku Akzo Co., Ltd.] The mixture was sufficiently mixed with a mixer to produce a compound having a total content of the polymerizable unsaturated monomer, the thermosetting resin and the polyisocyanate compound of 99.5%. The compound was left at room temperature for 24 hours to obtain a pale yellow transparent rubber-like molding material.
[0023]
The above-mentioned molding material was press-molded using a mold for forming a washbasin counter with a bowl shown in FIG. 1 (approximate dimensions: width 1500 mm × depth 600 mm × height 220 mm × plate thickness 7 mm), and a pale yellow transparent bowl A molded product of the counter was obtained. The press molding conditions were an upper mold (product surface) of 120 ° C., a lower mold (rear surface) of 100 ° C., a molding pressure of 9.8 MPa, and a pressurizing time of 8 minutes.
[0024]
Next, a red acrylic urethane-based paint was applied to the back surface of the bowl portion of the molded product, and a yellow acrylic urethane-based paint was applied to the back surface of the counter portion, and then left at room temperature for 24 hours.
The obtained molded article had a taste of glass craft using red glass (bowl portion) and yellow glass (counter portion), and was of very high commercial value.
[0025]
[Example 2]
Dicklite UE-3505 100 parts, hexamethylene diisocyanate 10 parts (NCO / OH = 0.57), DABCO T-9 0.03 parts, Trigonox 121-50 0.5 parts, fiber reinforcement (glass milled fiber, average 10 parts of a fiber having a fiber length of 0.1 mm were sufficiently mixed with a stirrer to prepare a compound having a total content of the polymerizable unsaturated monomer, the thermosetting resin and the polyisocyanate compound of 91.3%. The compound was left at room temperature for 24 hours to obtain a pale yellow transparent rubber-like molding material.
[0026]
This molding material was molded in the same manner as in Example 1 to obtain a molded product of a wash counter with a transparent bowl. This molded article was painted in the same manner as in Example 1 and left at room temperature for 24 hours.
The obtained molded article had a taste of glass craft using red glass (bowl portion) and yellow glass (counter portion), and was of very high commercial value.
[0027]
[Example 3]
First, 100 parts of Dicklight UE-3505, 5 parts of Polyton White J-170A [white pigment, manufactured by Dainippon Ink and Chemicals, Inc.], and 1 part of Parkadox 16 [curing agent, products of Kayaku Akzo Co., Ltd.] The mixture was sufficiently mixed with a stirrer to produce a white paint. Subsequently, 100 parts of Dicklight UE-3505, 5 parts of Polyton Blue J-831A [blue pigment, manufactured by Dainippon Ink and Chemicals, Inc.], 1 part of Parkadox 16 [curing agent, products of Kayaku Akzo Co., Ltd.] Was sufficiently mixed with a stirrer to produce a blue paint.
[0028]
Next, the above-described white paint was applied to the surface of the lower mold bowl portion of the mold for forming a wash counter with a bowl, and the above-described blue paint was applied to the surface of the lower mold counter portion. After being left for 10 minutes to cure the paint, it was molded in the same manner as in Example 1 using the molding material of Example 1, and a wash counter-molded product with a bowl in which a colored layer was simultaneously integrally molded on the back surface of the molded product. Got.
[0029]
The obtained molded product had a taste of glass craft using white glass (bowl portion) and blue glass (counter portion), and was of very high commercial value.
[0030]
[Comparative Example 1]
90 parts of Polylite PS-520 [unsaturated polyester resin, product of Dainippon Ink & Chemicals, Inc.], 10 parts of Polylite PB-956 [low shrinkage agent, product of Dainippon Ink & Chemicals, Inc.], filler (water) 240 parts of aluminum oxide, 4 parts of release agent (zinc stearate), 1 part of curing agent (t-butylperoxybenzoate), 1 part of thickener (magnesium oxide), fiber reinforcement (chopped strand glass, average fiber) 22 parts (length 6 mm) were kneaded with a kneader to prepare a general BMC.
[0031]
This BMC was molded in the same manner as in Example 1 except that the press molding conditions were changed to 145 ° C. for the upper die (product surface) and 130 ° C. for the lower die (rear surface) to obtain a wash counter product with a bowl. It was white and opaque.
This molded article was painted in the same manner as in Example 1 to form a colored layer on the back side, but nothing was seen from the product side, and there was no change compared to the molded article before painting. Was.
[0032]
[Comparative Example 2]
90 parts of Polylite PS-520, 10 parts of Polylite PB-956, 1 part of curing agent (t-butylperoxybenzoate), 2 parts of thickener (magnesium oxide), fiber reinforcement (chopped strand glass, average fiber length 6 mm) Five parts were kneaded with a kneader to produce BMC having a resin component (total of unsaturated polyester resin and low shrinkage agent) of 92.6%.
This BMC was molded into a washbasin counter with a bowl in the same manner as in Comparative Example 1. However, when the mold was opened, many large cracks and cracks had already occurred throughout the molded product. Could not.
[0033]
[Comparative Example 3]
Dicklite UE-3505 100 parts, hexamethylene diisocyanate 10 parts (NCO / OH = 0.57), DABCO T-9 0.03 parts, Trigonox 121-50 0.5 parts, filler (aluminum hydroxide) 40 parts Was sufficiently mixed with a stirrer to prepare a compound having a total content of the polymerizable unsaturated monomer, the thermosetting resin and the polyisocyanate compound of 73.1%. The compound was left at room temperature for 24 hours to obtain a rubber-like molding material, but its appearance was slightly opaque.
[0034]
This molding material was molded in the same manner as in Example 1 to obtain a wash countertop molded product with a bowl. The molded product was a light milky white opaque product. Further, many cracks occurred at the end of the molded product.
This molded product was coated in the same manner as in Example 1 to form a colored layer on the back surface side. However, the presence of the colored layer on the back surface could not be recognized from the product side, and the product had no commercial value.
[0035]
【The invention's effect】
The bowl-equipped counter of the present invention is provided with a colored layer of a different color between the bowl portion and the counter portion on the back surface, and is excellent in the transparency of glass crafts and excellent in design.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an example of a counter with a bowl according to the present invention.
[Explanation of symbols]
1 ... Bowl part 2 ... Counter part (hatched part)

Claims (4)

A bowl portion and a counter portion are integrally formed of the same transparent material, and a counter with a bowl having a colored layer on the back surface, wherein the colored layer on the back surface of the counter portion and the colored layer on the back surface of the bowl portion have different colors. A counter with a highly designed bowl, characterized by being constructed. Radical curing molding in which the transparent material contains (A) a polymerizable unsaturated monomer, (B) a thermosetting resin having a hydroxyl group and an ethylenically unsaturated double bond in a molecule, and (C) a polyisocyanate compound. 2. The high-design bowl-equipped counter according to claim 1, wherein said radical-curable molding material is press-molded. The total content of (A) a polymerizable unsaturated monomer in a radical curing type molding material, (B) a thermosetting resin having a hydroxyl group and an ethylenically unsaturated double bond in a molecule, and (C) a polyisocyanate compound. The counter with a high-design bowl according to claim 1 or 2, wherein the ratio is 80% by weight or more. The high-design bowl-equipped counter according to any one of claims 1 to 3, wherein the radical-curable molding material and the colored layer are formed simultaneously and integrally with the press.

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