JPH04368820A - Manufacture of artificial marble molding - Google Patents
Manufacture of artificial marble moldingInfo
- Publication number
- JPH04368820A JPH04368820A JP16938591A JP16938591A JPH04368820A JP H04368820 A JPH04368820 A JP H04368820A JP 16938591 A JP16938591 A JP 16938591A JP 16938591 A JP16938591 A JP 16938591A JP H04368820 A JPH04368820 A JP H04368820A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molded body
- release agent
- artificial marble
- forming
- 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
Links
- 239000002928 artificial marble Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000465 moulding Methods 0.000 title abstract description 20
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 6
- 239000006082 mold release agent Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 description 10
- 230000001681 protective effect Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は人工大理石成形体の製
造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an artificial marble molded article.
【０００２】0002
【従来の技術】従来人工大理石成形体を製造する方法と
しては、成形体の裏面側を形成する為の所定形状に形成
された第１の型と成形体の表面側を形成する為の第２の
型を接合固定してこの第１、第２の型の接合面に空間部
を形成し、この空間部に、ポリエステル樹脂叉はアクリ
ル樹脂等の熱硬化性樹脂に寒水石や方解石等の無機質フ
ィラ−叉はガラス質フィラ−、顔料、硬化剤等の充填剤
を混入して形成した原材料を注入し、硬化後上記第１、
第２の型を分離して成形体を取り出すことにより人工大
理石成形体を製造していた。[Prior Art] A conventional method for manufacturing an artificial marble molded body consists of a first mold formed into a predetermined shape for forming the back side of the molded body, and a second mold for forming the front side of the molded body. A space is formed on the joining surfaces of the first and second molds, and a thermosetting resin such as polyester resin or acrylic resin is filled with an inorganic material such as anhydrite or calcite. A raw material formed by mixing a filler such as a filler or a glass filler, a pigment, a hardening agent, etc. is injected, and after hardening, the above-mentioned first,
An artificial marble molded body was produced by separating the second mold and taking out the molded body.
【０００３】ところで上記第１、第２の型の材料として
はガラス繊維強化プラスチック等が主に使用され、上記
原材料は硬化時、型に密着した状態になる。それ故第１
、第２の型を分離して成形体を取り出す時には成形体が
型に密着しているので成形体を取り出しにくく、無理に
取り出すと成形体あるいは型を破損してしまういという
ことがある。その為従来より成形体の表裏面側を形成す
る為の第１、第２の型の形成面にワックス系離型剤を塗
布するようにしている。By the way, as the material for the first and second molds, glass fiber reinforced plastic or the like is mainly used, and the raw material comes into close contact with the mold when hardened. Therefore the first
When the second mold is separated and the molded article is taken out, the molded article is in close contact with the mold, so it is difficult to take out the molded article, and if the molded article is taken out forcibly, the molded article or the mold may be damaged. For this reason, a wax-based mold release agent has conventionally been applied to the forming surfaces of first and second molds for forming the front and back sides of a molded body.
【０００４】0004
【発明が解決しようとする課題】確かに上記ワックス系
離型剤を使用すると、型と成形体の分離を良好に行なう
ことができる。しかしながらこのワックス系離型剤は上
記型と化学反応を起こして型に密着結合することがない
。それ故、このワック系離型剤を型に塗布して成形を３
回程度連続して行なうと、型に塗布した離型剤が少しづ
つ型から取り除かれて成形体に付着し、型には離型剤が
なくなるかあるいは大変少量の離型剤しか残らないこと
になる。そのような状態で更に成形を行なうと成形体が
型に密着し、成形体を型から取り外す作業に大変手間が
かかることになる。したがって３回程度成形を行なうと
、その都度ワックス系離型剤を型に塗布する作業を行な
わなければならず、作業能率が悪いと共にコストアップ
の原因となっているという課題がある。It is true that when the above-mentioned wax-based mold release agent is used, the mold and the molded article can be separated well. However, this wax-based mold release agent does not cause a chemical reaction with the mold to tightly bond to the mold. Therefore, this wax-based mold release agent is applied to the mold and the molding is done for 3 times.
If this is repeated several times in succession, the release agent applied to the mold will be gradually removed from the mold and adhere to the molded object, resulting in either no release agent left in the mold or only a very small amount of mold release agent remaining. Become. If further molding is carried out in such a state, the molded body will stick tightly to the mold, and it will take much time and effort to remove the molded body from the mold. Therefore, when molding is performed about three times, it is necessary to apply a wax-based mold release agent to the mold each time, which causes problems in that work efficiency is poor and costs increase.
【０００５】更に第２図に示すように例えば浴槽のよう
な大きな人工大理石成形体１の場合は、強度向上や保温
性の向上の為に成形体１の裏面側１Ａに発泡ウレタンフ
ォ−ム材やガラス繊維強化プラスチック材等の保護材２
を固着する必要がある。このような場合、型の形成面に
ワックス系離型剤を使用して成形したものであると、成
形体１の裏面側１Ａにワックス系離型剤が付着し、成形
体１の裏面側１Ａに付着したワックス系離型剤と上記保
護材２とは化学反応により密着結合することがない為、
成形体１の裏面側１Ａに保護材２を固着させることがで
きないことがある。それ故成形体１に保護材２を密着結
合させる為に成形体１の裏面側１Ａからワックス系離型
剤を取り除く作業を行なわなければならず、手間がかか
りり作業能率が悪いとう課題がある。Furthermore, as shown in FIG. 2, in the case of a large artificial marble molded body 1 such as a bathtub, a urethane foam material is applied to the back side 1A of the molded body 1 to improve strength and heat retention. Protective materials such as glass fiber reinforced plastic materials 2
need to be fixed. In such a case, if the mold is formed using a wax-based mold release agent on the forming surface of the mold, the wax-based mold release agent will adhere to the back side 1A of the molded body 1, and the wax-based mold release agent will adhere to the back side 1A of the molded body 1. Since the wax-based mold release agent attached to the protective material 2 does not form a close bond due to chemical reaction,
The protective material 2 may not be able to be fixed to the back side 1A of the molded body 1 in some cases. Therefore, in order to tightly bond the protective material 2 to the molded body 1, it is necessary to remove the wax-based mold release agent from the back side 1A of the molded body 1, which is time-consuming and has the problem of poor work efficiency. .
【０００６】[0006]
【課題を解決するための手段】この発明は作業能率を従
来よりも良好にした人工大理石成形体の製造方法を提供
することを目的としたものである。その為にこの発明は
、成形体の裏面側を形成する為の第１の型と成形体の表
面側を形成する為の第２の型を接合固定して、この接合
面に空間部を形成し、この空間部に熱硬化性樹脂を主材
料とする原材料を注入して人工代理石成形体を製造する
方法において、上記第１、第２の型を接合固定する前に
、上記空間部を形成する第１の型の形成面にシリコン離
型剤を塗布するようにした。[Means for Solving the Problems] The object of the present invention is to provide a method for manufacturing an artificial marble molded body with improved working efficiency than before. To this end, the present invention involves joining and fixing a first mold for forming the back side of the molded body and a second mold for forming the front side of the molded body, and forming a space on this joint surface. In the method of manufacturing an artificial surrogate stone molded body by injecting a raw material mainly composed of a thermosetting resin into this space, before joining and fixing the first and second molds, the space is A silicon mold release agent was applied to the forming surface of the first mold to be formed.
【０００７】[0007]
【作用】第１の型の形成面に塗布されたシリコン離型剤
はこの第１の型と化学反応を起こして第１の型と密着結
合をするので、１回の成形により第１の型から取り除か
れるシリコン離型剤の量は従来のワックス系離型剤の量
に比べて大変少ない。それ故従来に比べて成形途中で新
たに型に離型剤を塗布する回数を少なくして連続成形を
行なう事ができ、作業能率が向上する。更に成形体に離
型剤が付着する量が大変少量であるので、成形体の裏面
側から離型剤を取り除くことなく成形体の裏面側に保護
材を固着させることができる。[Function] The silicone mold release agent applied to the forming surface of the first mold causes a chemical reaction with this first mold and forms a close bond with the first mold, so one molding process will release the first mold. The amount of silicone mold release agent removed from the mold is very small compared to the amount of conventional wax-based mold release agents. Therefore, compared to the conventional method, continuous molding can be performed by reducing the number of times that a mold release agent is newly applied to the mold during molding, and work efficiency is improved. Furthermore, since the amount of mold release agent that adheres to the molded body is very small, the protective material can be adhered to the back side of the molded body without removing the mold release agent from the back side of the molded body.
【０００８】[0008]
【実施例】以下この発明の実施例を図面に基づいて説明
する。図中３は所望の人工大理石成形体１を製造する為
の型である。この型３は成形体１の裏面側１Ａを形成す
る為の中央部が凹状の所定形状に形成された第１の型４
と成形体１の表面側１Ｂを形成する為の中央部が凸状の
所定形状に形成された第２の型５とを、上記第１の型４
を上側にし、上記第１の型４の凹状の中央部と第２の型
５の凸状の中央部を互いに向き合わせるようにし、しか
も空間を持って第１、第２の型４、５の周縁部を接合固
定して形成されている。そして上記第１、第２の型４、
５の接合面には空間部６が形成されている。この空間部
６の形状は上記成形体１と同じ形状に形成される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. 3 in the figure is a mold for producing the desired artificial marble molded body 1. This mold 3 is a first mold 4 formed into a predetermined shape with a concave center portion for forming the back side 1A of the molded body 1.
and a second mold 5 formed into a predetermined shape with a convex center portion for forming the surface side 1B of the molded body 1,
with the concave central part of the first mold 4 and the convex central part of the second mold 5 facing each other, and with a space between the first and second molds 4 and 5. It is formed by joining and fixing the peripheral part. and the first and second types 4,
A space 6 is formed in the joint surface of 5. The shape of this space 6 is the same as that of the molded body 1 described above.
【０００９】そして上記第１の型４の一端側には上記空
間部６に連結した注入口７が形成され、更に上記第１の
型４の上記空間部６を形成する形成面４Ａにはシリコン
離型剤８が所定量塗布されている。この塗布方法として
は吹き付けが最適である。又上記第２の型５の形成面５
Ｂにはワックス系離型剤９が塗布されている。これはこ
の形成面５Ｂにシリコン離型剤８を塗布すると、成形体
１の表面側１Ｂを構成するゲルコ−トをこの形成面５Ｂ
に塗布した時に、ゲルコ−トが上記シリコン離型剤８に
より球状になってしまい、ゲルコ−トを形成面５Ｂに付
着させることができない為である。An injection port 7 connected to the space 6 is formed on one end side of the first mold 4, and silicon is formed on the forming surface 4A of the first mold 4 forming the space 6. A predetermined amount of mold release agent 8 is applied. Spraying is the most suitable method for this application. Also, the forming surface 5 of the second mold 5
A wax-based mold release agent 9 is applied to B. This is because when the silicone mold release agent 8 is applied to this forming surface 5B, the gel coat constituting the front side 1B of the molded body 1 is applied to this forming surface 5B.
This is because when applied to the surface 5B, the gel coat becomes spherical due to the silicone mold release agent 8, making it impossible to adhere the gel coat to the forming surface 5B.
【００１０】ところで上記シリコン離型剤８は常温で空
気中の水分により有機酸を放出して酸化するものであり
、例えばアシロキシシロキサンがある。これの反応式を
示すとBy the way, the silicone mold release agent 8 is one that releases an organic acid and oxidizes with moisture in the air at room temperature, and includes, for example, acyloxysiloxane. The reaction formula for this is shown as
【００１１】[0011]
【化１】[Chemical formula 1]
【００１２】で表わされ、上記有機官能基Ｙが有機材料
である第１の型４と橋かけ結合することにより、シリコ
ン離型剤８が第１の型４に密着結合される。上記アシロ
キシシロキサンの他に常温で反応する反応基としては例
えば
ＳｉＯＮ＝Ｃ、Ｓｉ−ＮＣＯ、Ｓｉ−Ｏ−ＴｉＯＣ等が
ある。The silicone mold release agent 8 is closely bonded to the first mold 4 by cross-bonding the organic functional group Y with the first mold 4 made of an organic material. In addition to the above-mentioned acyloxysiloxane, examples of reactive groups that react at room temperature include SiON=C, Si-NCO, and Si-O-TiOC.
【００１３】そして上記シリコン離型剤８を第１の型４
に塗布すれば常温で空気中の水分により酸化作用を起こ
すが、酸化作用を早める為及び粘度調整の為に含まれて
いる溶剤を取り除く為に約８０℃の炉内で２時間程度加
熱乾燥させる。Then, the silicone mold release agent 8 is placed in the first mold 4.
When applied to a surface, it will oxidize due to moisture in the air at room temperature, but in order to accelerate the oxidation and remove the solvent contained in it to adjust the viscosity, it is heated and dried in an oven at approximately 80°C for about 2 hours. .
【００１４】しかして上記のように形成された型３の空
間部６に、ポリエステル樹脂やアクリル樹脂等の熱硬化
性樹脂に寒水石や方解石等の無機質フィラ−叉はガラス
質フィラ−、顔料、硬化剤等の充填剤を混入して形成し
た原材料を第１の型４の注入口７から注入して硬化させ
、硬化後型３から取り出して人工大理石成形体１を製造
する。上記第１の型４の形成面４Ａにはシリコン離型剤
８が塗布されているので、成形体１が上記第１の型４の
形成面４Ａに密着することがない。それ故第１の型４と
成形体１とを容易に分離することができる。又その時に
シリコン離型剤８は第１の型４の形成面４Ａに化学反応
により密着結合しているので第１の型４の形成面４Ａか
ら一回の成形により取り除かれる量は大変少量であり、
連続して３０回程度成形を行なうことができる。従って
、３０回程度連続して成形を行なった時に１度第１の型
４の形成面４Ａにシリコン離型剤８を塗布すれば良いの
で従来の製造方法に比べて作業能率が向上しコストの低
減を図ることができる。Then, in the space 6 of the mold 3 formed as described above, a thermosetting resin such as polyester resin or acrylic resin, an inorganic filler such as agarite or calcite, or a vitreous filler, a pigment, A raw material mixed with a filler such as a hardening agent is injected from the injection port 7 of the first mold 4 and hardened, and after curing is taken out from the mold 3 to produce the artificial marble molded body 1. Since the silicon mold release agent 8 is applied to the forming surface 4A of the first mold 4, the molded body 1 does not come into close contact with the forming surface 4A of the first mold 4. Therefore, the first mold 4 and the molded body 1 can be easily separated. Also, at this time, since the silicone mold release agent 8 is closely bonded to the forming surface 4A of the first mold 4 through a chemical reaction, the amount removed from the forming surface 4A of the first mold 4 during one molding process is very small. can be,
Molding can be performed continuously about 30 times. Therefore, it is only necessary to apply the silicone mold release agent 8 to the forming surface 4A of the first mold 4 once after approximately 30 consecutive molding operations, which improves work efficiency and reduces costs compared to conventional manufacturing methods. It is possible to reduce the
【００１５】更に上記シリコン離型剤８は成形後成形体
１の裏面側１Ａに付着している量が大変少量であるので
、成形体１の裏面側１Ａからシリコン離型剤８を取り除
くことなく、この成形体１の裏面側１Ａに上記保護剤２
を固着させることができる。それ故成形体１の裏面側１
Ａからシリコン離型剤８を取り除く作業を行なう必要が
ないので、従来の製造方法に比べて手間がかからず作業
能率が向上する。なお成形体１の表面側１Ｂにはワック
ス系り型剤９が付着するので従来の製造方法と同じよう
にワックス系り型剤９を取り除く必要がある。Furthermore, since the amount of the silicone mold release agent 8 attached to the back side 1A of the molded body 1 after molding is very small, the silicone mold release agent 8 is not removed from the back side 1A of the molded body 1. , the above-mentioned protective agent 2 is applied to the back side 1A of this molded body 1.
can be fixed. Therefore, the back side 1 of the molded body 1
Since there is no need to remove the silicone mold release agent 8 from A, the work efficiency is improved with less time and effort compared to conventional manufacturing methods. Note that since the wax-based molding agent 9 adheres to the surface side 1B of the molded body 1, it is necessary to remove the wax-based molding agent 9 as in the conventional manufacturing method.
【００１６】[0016]
【発明の効果】以上述べたようにこの発明は、人工大理
石の裏面側を形成する為の第１の型と成形体の表面側を
形成する為の第２の型を接合固定し、第１、第２の型の
接合面に空間部を形成し、この空間部に熱硬化性樹脂を
主材料とする原材料を注入して人工大理石成形体を製造
する方法において、上記第１、第２の型を接合固定する
前に上記空間部を形成する第１の型の形成面にシリコン
離型剤を塗布した。従って成形時、シリコン離型剤が第
１の型から取り除かれる量が大変少量であるので、シリ
コン離型剤を第１の型にその都度塗布する必要がなく、
従来の製造方法に比べて離型剤を型に塗布する回数を少
なくして連続成形を行なうことができ、作業能率の向上
を図ることができる。更に成形体の裏面側に付着するシ
リコン離型剤の量が大変少量であるので、このシリコン
離型剤を取り除くことなく成形体の裏面側に保護材を固
着させることができる。それ故従来の製造方法にくらべ
て作業能率を向上し、コストの低減を図ることができる
。Effects of the Invention As described above, the present invention connects and fixes the first mold for forming the back side of the artificial marble and the second mold for forming the front side of the molded object, and , a method of manufacturing an artificial marble molded body by forming a space in the joint surface of the second mold and injecting a raw material mainly composed of a thermosetting resin into the space, Before the molds were bonded and fixed, a silicone mold release agent was applied to the forming surface of the first mold that would form the space. Therefore, during molding, the amount of silicone mold release agent removed from the first mold is very small, so there is no need to apply silicone mold release agent to the first mold each time.
Compared to conventional manufacturing methods, continuous molding can be performed by reducing the number of times a mold is coated with a mold release agent, and work efficiency can be improved. Furthermore, since the amount of silicone mold release agent that adheres to the back side of the molded body is very small, the protective material can be adhered to the back side of the molded body without removing this silicone mold release agent. Therefore, compared to conventional manufacturing methods, work efficiency can be improved and costs can be reduced.
【図１】型の断面図[Figure 1] Cross-sectional view of the mold
【図２】裏面側に保護材を固着した成形体の断面図[Figure 2] Cross-sectional view of a molded product with a protective material fixed to the back side
１ 成形体 １Ａ 成形体の裏面側 ２ 保護材 ３ 型 ４ 第１の型 ４Ａ 第１の型の裏面側 ５ 第２の型 ６ 空間部 ８ シリコン離型剤 1 Molded object 1A Back side of molded object 2 Protective material 3 Type 4 First type 4A Back side of the first mold 5 Second type 6 Space part 8 Silicone mold release agent
Claims (1)
為の所定形状に形成された第１の型と上記成形体の表面
側を形成する為の所定形状に形成された第２の型を接合
固定してこの第１、第２の型の接合面に空間部を形成し
、この空間部に熱硬化性樹脂を主材料とする原材料を注
入して人工大理石成形体を製造する方法において、上記
第１、第２の型を接合固定する前に、上記空間部を形成
する第１の型の形成面にシリコン離型剤を塗布したこと
を特徴とする人工大理石成形体の製造方法。Claim 1: A first mold formed into a predetermined shape to form the back side of an artificial marble molded body, and a second mold formed into a predetermined shape to form the front side of the molded body. In a method of manufacturing an artificial marble molded body by bonding and fixing to form a space on the joining surfaces of the first and second molds, and injecting a raw material mainly composed of a thermosetting resin into the space, A method for manufacturing an artificial marble molded body, characterized in that before joining and fixing the first and second molds, a silicone mold release agent is applied to the forming surface of the first mold that forms the space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16938591A JPH04368820A (en) | 1991-06-14 | 1991-06-14 | Manufacture of artificial marble molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16938591A JPH04368820A (en) | 1991-06-14 | 1991-06-14 | Manufacture of artificial marble molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04368820A true JPH04368820A (en) | 1992-12-21 |
Family
ID=15885617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16938591A Pending JPH04368820A (en) | 1991-06-14 | 1991-06-14 | Manufacture of artificial marble molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04368820A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0247013A (en) * | 1988-08-08 | 1990-02-16 | Fukuvi Chem Ind Co Ltd | Manufacture of artificial marble molded object |
-
1991
- 1991-06-14 JP JP16938591A patent/JPH04368820A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0247013A (en) * | 1988-08-08 | 1990-02-16 | Fukuvi Chem Ind Co Ltd | Manufacture of artificial marble molded object |
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