JPH03193422A - Method for molding product having pattern on its surface - Google Patents

Method for molding product having pattern on its surface

Info

Publication number
JPH03193422A
JPH03193422A JP33541589A JP33541589A JPH03193422A JP H03193422 A JPH03193422 A JP H03193422A JP 33541589 A JP33541589 A JP 33541589A JP 33541589 A JP33541589 A JP 33541589A JP H03193422 A JPH03193422 A JP H03193422A
Authority
JP
Japan
Prior art keywords
particles
mold
lower mold
pattern
liquid
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.)
Pending
Application number
JP33541589A
Other languages
Japanese (ja)
Inventor
Toshihiro Miyazaki
敏博 宮崎
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP33541589A priority Critical patent/JPH03193422A/en
Publication of JPH03193422A publication Critical patent/JPH03193422A/en
Pending legal-status Critical Current

Links

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To form a pattern composed of granitelike particles having a large particle size by making the temp. of a mold at the time of the bonding of liquid dropletlike particles higher than that of the mold at the time of the charging of a curable composition. CONSTITUTION:The pipings 3 of a heating liquid medium are embedded in lower and upper molds 1a, 1b in the vicinity of the surfaces thereof and sprayable coating prepared by compounding a filler, pigment or the like with a thermosetting resin is diluted with a solvent and sprayed to the lower mold 1a by a spray gun 4 to bond liquid droplet like particles 2 to the lower mold 1a. When the sprayable coating is sprayed to the lower mold 1a heated to 70 deg.C or higher, the dilution solvent of the liquid droplet like particles 2 is immediately volatilized and the thin layer composed only of the sprayable coating is formed. Next, the pigment is altered to prepare sprayable coatings which are, in turn, successively sprayed to the surface of the lower mold 1a to bond two or more kinds of liquid droplet like particles 2 having different hues and particles sizes to the lower mold 1a. Thereafter, the temp. of the lower mold 1a is lowered to 50 deg.C to register the lower mold 1a with the upper mold 1b set to 50 deg.C and a casting resin is injected in the molds. By this method, no liquid running is generated even when large liquid droplet particles are bonded and a varified granitelike pattern having a smooth surface can be developed.

Description

【発明の詳細な説明】[Detailed description of the invention] 【産業上の利用分野】[Industrial application field]

本発明は例えば、有彩石調の模様を有する成形品の成形
方法に関する。
The present invention relates, for example, to a method for molding a molded article having a chromatic stone-like pattern.

【従来技術】[Prior art]

液状不飽和ポリエステル樹脂やメチルメタクリレート樹
脂のようなアクリル樹脂に炭酸カルシウム、ガラス粉末
、シリカ粉末等の充填剤を配合し、分散、させて金型内
に投入し、熱及び/又は触媒の作用下に硬化させること
により成形品を得ることは周知の技術である。この技術
により表面が平滑な成形品が得られ、洗面器、浴槽及び
テーブルの上面のような成形品の製造に採用されている
。 又、近年美しい表面仕上げの成形品の要望が高まってお
り、金型表面にスプレーガンにより塗料を霧状に吹き付
けて窯変調の模様や梨地調の模様にしたりした後、配合
樹脂を金型内に投入し、熱及び/又は触媒の作用下で硬
化させて平滑で美しい表面横様を有する成形品が提供さ
れるようになってきている。
Fillers such as calcium carbonate, glass powder, and silica powder are blended with acrylic resin such as liquid unsaturated polyester resin or methyl methacrylate resin, dispersed, and placed in a mold under the action of heat and/or catalyst. It is a well-known technique to obtain a molded article by curing. This technique yields molded products with smooth surfaces and is used in the production of molded products such as wash basins, bathtubs, and table tops. In addition, in recent years there has been an increasing demand for molded products with beautiful surface finishes, and after spraying a mist of paint onto the mold surface using a spray gun to create a kiln-like pattern or satin-like pattern, the compounded resin is applied inside the mold. It has become possible to provide molded products having smooth and beautiful surface profiles by putting them into a mold and curing them under the action of heat and/or catalysts.

【発明が解決しようとする課題】[Problem to be solved by the invention]

一方、有彩石調のような粒子の大かい模様に対する要望
が強いが、従来の技術ではこれを実現するには不可能で
あった。それは、洗面器や浴槽は三次元物体であり、垂
直部や傾斜部があり、この部分に液滴が付着すると重力
方向に移動して、(1わゆる液だれを起こし、不自然な
模様になってしまうためである。 本発明は上記事情に鑑みて為されたものであり、その目
的とするところは、有形石調のような径の大きい粒子の
横様を有する成形品を製造することにある。
On the other hand, there is a strong demand for patterns with large grains such as colored stone, but it has been impossible to achieve this using conventional technology. Washbasins and bathtubs are three-dimensional objects, with vertical and sloping parts, and when droplets adhere to these parts, they move in the direction of gravity, causing so-called drips and creating unnatural patterns. The present invention was made in view of the above circumstances, and its purpose is to manufacture a molded product having a horizontal pattern of large-diameter particles such as a shaped stone. It is in.

【課題を解決するための手段1 本発明の表面に模様を有する成形品の成形方法は、金型
1表面に液滴状の粒子2を付着させて横様を形成し、次
いで硬化可能な組成物を金型1に投入して硬化させて成
形品の表面に横様を付ける成形方法であって、液滴状の
粒子2を付着させる時の金型温度を硬化可能な組成物を
投入する時の金型温度よりも高(することを特徴とする
ものであり、この構成により上記課題が解決されたもの
である。 [作用1 金型1表面に液滴状の粒子2を付着させて模様を形成す
るので、この模様が成形品に一体的に転写され、径の大
きい粒子2からなる有形石調の横様を具現でbるもので
ある。 以下本発明の詳細な説明する。 金型1は浴槽を成形するためのものであり、第1図に示
すように下型1aと上型1bとからなり、下型1aと上
型1bの表面近傍には加温するための液媒体の配管3が
埋設されている。 まず下型1aに液滴状の粒子2を付着させる。 これは、#12図に示すように熱硬化性樹脂に充填剤、
顔料等を配合させたスプレーペイントを溶剤で希釈して
スプレーガン4により吹き付けることにより下型1aに
液滴状の粒子2を付着させる。 熱硬化性樹脂としては不飽和ポリエステル樹脂とか、メ
チルメタクリレート樹脂のようなアクリル樹脂、7ヱノ
ール樹脂、エリア樹脂等が挙げられる。浴槽用としては
耐熱水性に優れるメチルメタクリレート樹脂が好ましい
、充填剤としてはシリカ粉末、ガラス粉末、炭酸カルシ
ウム等が挙げられが、なかでも強度の大きいシリカ粉末
が好ましい、又、顔料としてはアクリル系顔料のような
有機顔料、酸化チタン、酸化鉄のような無機顔料、ある
いはこれらを混合して使用される0例えば、メチルメタ
クリレート樹脂30重量部、シリカ粉末70重量部、顔
料5重量部を配合してスプレーペイントを調製し、キシ
レンで希釈し懸濁させたもの(粘度10cp)を口径2
.5 srsのスプレーガン4によりスプレー圧0.2
kg/c輸2で70℃以上に加温された下型1aに吹き
付けて液滴状の粒子2を付着させる。この場合、液滴状
の粒子2は希釈液が直ちに揮発してしまいスプレーペイ
ントだけの薄い層となった。その直径を測定したところ
21以上のものが相当数存在した。このようにしてスプ
レーペイントの吹き付は密度をコントロールし、顔料を
変更して明度、色調、色相の異なるスプレーペイントを
順次下型1aの表面に吹き付けて、色調及び粒径が異な
る複数種の液滴状の粒子2を付着させた0例えば、第1
番目のスプレーペイントは3番目に明るいグレー(L車
=34.89、a本=−0,02、b京=−0,16)
、第2番目のスプレーペイントは2番目に明るいグレー
(L本=47.61.1*=0.71、b*=1.48
)、第3番目のスプレーペイントは最も明るいグレーで
薬味を帯びている(L本=52.55.8*=2.06
.5*=3.07)、第4番目のスプレーペイントは最
も暗いグレー(L京=27.36、a車=−0,60,
b*=−1,05)である。 この後、下型1aの温度を50″Cまで低下させ、50
℃に設定した上型1bを合わせて注型樹脂を注入した。 注型樹脂としては不飽和ポリエステル樹脂、メチルメタ
クリレート樹脂のようなアクリル樹脂、フェノール樹脂
、エリア樹脂等の熱硬化性樹脂に充填剤と所望により顔
料を配合させたものを採用できる。この場合、液滴粒子
2の樹脂と同じ樹脂を使用するのが好ましい0次いで、
金型温度を60〜90℃に上昇させて約30分加熱して
触媒(過酸化物)の作用下で硬化させ、脱型して$3図
に示すような有彩石調のa棟を有して表面が平滑で美し
い浴槽を製造した。 【発明の効果】 本発明にあっては、金型表面に液滴状の粒子を付着させ
て模様を形成するので、この横様が成形品に一体的に転
写され、径の大きい粒子からなる御影石側の模様を具現
できるものであり、しかも液滴状の粒子を付着させる時
の金型温度を硬化可能な組成物を投入する時の金型温度
よりも高くするので、大きな液滴状の粒子を付着させて
も、液だれか生じることがなく、又、組成物の硬化に際
してもデル化が生じることがなく、表面平滑で多様な御
影石側の模様を現出させることがでトるものである。
[Means for Solving the Problems 1] The method of molding a molded article having a pattern on the surface of the present invention involves depositing droplet-like particles 2 on the surface of a mold 1 to form a horizontal pattern, and then forming a curable composition. A molding method in which a material is put into a mold 1 and cured to give a horizontal pattern to the surface of the molded product, in which a composition that can harden the temperature of the mold when droplet-shaped particles 2 are attached is put in. The above-mentioned problem is solved by this structure. Since a pattern is formed, this pattern is integrally transferred to the molded product, and a shaped stone-like horizontal pattern made of particles 2 with a large diameter is realized.The present invention will be described in detail below. The mold 1 is for molding a bathtub, and as shown in FIG. 1, it consists of a lower mold 1a and an upper mold 1b, and a liquid medium for heating is placed near the surfaces of the lower mold 1a and the upper mold 1b. A pipe 3 is buried therein. First, droplet-like particles 2 are attached to the lower mold 1a. This is done by adding a filler, a filler,
Spray paint mixed with pigments and the like is diluted with a solvent and sprayed with a spray gun 4, thereby causing droplet-like particles 2 to adhere to the lower mold 1a. Examples of the thermosetting resin include unsaturated polyester resin, acrylic resin such as methyl methacrylate resin, 7-enol resin, and area resin. Methyl methacrylate resin, which has excellent hot water resistance, is preferred for bathtubs. Examples of fillers include silica powder, glass powder, and calcium carbonate, among which silica powder, which has high strength, is preferred.As for pigments, acrylic pigments are preferred. For example, 30 parts by weight of methyl methacrylate resin, 70 parts by weight of silica powder, and 5 parts by weight of pigment are used. Prepare spray paint, dilute it with xylene and suspend it (viscosity 10 cp).
.. Spray pressure 0.2 with spray gun 4 of 5 srs
The droplet-shaped particles 2 are sprayed onto the lower mold 1a heated to 70° C. or higher at kg/c infusion 2. In this case, the droplet-shaped particles 2 became a thin layer of spray paint because the diluent immediately volatilized. When we measured their diameters, we found that there were quite a number of them with diameters of 21 or more. In this way, spray paint is sprayed by controlling the density, changing the pigment, and sequentially spraying spray paints with different lightness, tone, and hue onto the surface of the lower mold 1a, and spraying multiple types of spray paint with different tones and particle sizes. For example, the first
The third spray paint is the third lightest gray (L car = 34.89, A book = -0,02, B Kyo = -0,16)
, the second spray paint is the second lightest gray (L = 47.61.1* = 0.71, b* = 1.48
), the third spray paint is the lightest gray and seasoned (L books = 52.55.8 * = 2.06
.. 5*=3.07), the fourth spray paint is the darkest gray (Lkyo=27.36, car a=-0,60,
b*=-1,05). After this, the temperature of the lower mold 1a is lowered to 50"C, and
The upper mold 1b was set at a temperature of 0.degree. C., and the casting resin was poured into the mold. As the casting resin, a thermosetting resin such as an unsaturated polyester resin, an acrylic resin such as methyl methacrylate resin, a phenol resin, or an area resin mixed with a filler and, if desired, a pigment can be used. In this case, it is preferable to use the same resin as that of droplet particle 2.
The mold temperature was raised to 60-90°C and heated for about 30 minutes to harden under the action of a catalyst (peroxide), and the mold was removed to form a colored stone-like a ridge as shown in Figure 3. We have manufactured a bathtub with a smooth and beautiful surface. [Effect of the invention] In the present invention, since a pattern is formed by attaching droplet-like particles to the mold surface, this horizontal pattern is integrally transferred to the molded product, and the pattern is made up of particles with a large diameter. It is possible to embody the pattern on the granite side, and since the mold temperature when depositing the droplet-like particles is higher than the mold temperature when adding the curable composition, it is possible to create large droplet-like particles. Even when particles are attached, there is no liquid dripping, and even when the composition is cured, no deformation occurs, and the surface is smooth and various patterns can be created on the granite side. It is.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明における金型を示す断面図、第2図は同
上における一工程を示す斜視図、第3図、第4図及び第
5図は同上により製造された浴槽の表面の粒子構造を示
す写真であって、1は金型、2は液滴状の粒子である。
FIG. 1 is a sectional view showing a mold according to the present invention, FIG. 2 is a perspective view showing one step in the same, and FIGS. 3, 4, and 5 are particle structures on the surface of a bathtub manufactured by the above. 1 is a photograph showing a mold, and 2 is a droplet-shaped particle.

Claims (2)

【特許請求の範囲】[Claims] (1)金型表面に液滴状の粒子を付着させて模様を形成
し、次いで硬化可能な組成物を金型に投入して硬化させ
て成形品の表面に模様を付ける成形方法であって、液滴
状の粒子を付着させる時の金型温度を硬化可能な組成物
を投入する時の金型温度よりも高くすることを特徴とす
る表面に模様を有する成形品の成形方法。
(1) A molding method in which droplet-like particles are attached to the surface of a mold to form a pattern, and then a curable composition is poured into the mold and cured to form a pattern on the surface of the molded product. A method for molding a molded article having a pattern on its surface, characterized in that the temperature of the mold when the droplet-shaped particles are attached is higher than the temperature of the mold when the curable composition is charged.
(2)液滴状の粒子には粒径が2mm以上のものが含ま
れ、金型の液滴状の粒子を付着させる部分の表面温度を
70℃以上にすることを特徴とする請求項1記載の表面
に模様を有する成形品の成形方法。
(2) The droplet-shaped particles include those with a particle size of 2 mm or more, and the surface temperature of the part of the mold to which the droplet-shaped particles are attached is set to 70° C. or higher. A method for molding a molded product having a pattern on the surface as described above.
JP33541589A 1989-12-25 1989-12-25 Method for molding product having pattern on its surface Pending JPH03193422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33541589A JPH03193422A (en) 1989-12-25 1989-12-25 Method for molding product having pattern on its surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33541589A JPH03193422A (en) 1989-12-25 1989-12-25 Method for molding product having pattern on its surface

Publications (1)

Publication Number Publication Date
JPH03193422A true JPH03193422A (en) 1991-08-23

Family

ID=18288296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33541589A Pending JPH03193422A (en) 1989-12-25 1989-12-25 Method for molding product having pattern on its surface

Country Status (1)

Country Link
JP (1) JPH03193422A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020088794A (en) * 2001-05-21 2002-11-29 유림산업 주식회사 Reinforced plastic have granite pattern and manufacture method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020088794A (en) * 2001-05-21 2002-11-29 유림산업 주식회사 Reinforced plastic have granite pattern and manufacture method thereof

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