JPH0241217A - Method and apparatus for adhering slush molding powder - Google Patents
Method and apparatus for adhering slush molding powderInfo
- Publication number
- JPH0241217A JPH0241217A JP19214888A JP19214888A JPH0241217A JP H0241217 A JPH0241217 A JP H0241217A JP 19214888 A JP19214888 A JP 19214888A JP 19214888 A JP19214888 A JP 19214888A JP H0241217 A JPH0241217 A JP H0241217A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- reservoir tank
- mold
- slush
- tank
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 89
- 238000000465 moulding Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 title claims description 15
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は薄い皮状の樹脂からなる成形品を作るためのス
ラッシュ成形法を実施する際、スラッシュ成形型に材料
である樹脂の粉体を付着させる方法及び装置に関する。Detailed Description of the Invention (Industrial Application Field) The present invention is a method for applying resin powder as a material to a slush mold when carrying out a slush molding method for making a thin skin-like resin molded product. TECHNICAL FIELD The present invention relates to a method and apparatus for depositing.
（従来の技術）
粉状樹脂のスラッシュ成形方法は、例えば特開昭６１−
１００４２２号及び特開昭６３−９８４０８号公報等に
記載されている。(Prior art) A slush molding method for powdered resin is described, for example, in Japanese Patent Application Laid-open No. 1986-
It is described in No. 100422 and Japanese Patent Application Laid-Open No. 63-98408.
従来の粉状樹脂のスラッシュ成形法では、粉体を収容し
たリザーバタンクの上方開口部に加熱後のスラッシュ成
形型を被せて、リザーバタンクの上方開口部を密閉する
と同時に、スラッシュ成形型の加熱済みの粉体付着面を
リザーバタンクの内側へ向け、その状態でリザーバタン
クを反転させることにより、その中の粉体をスラッシュ
成形型の粉体付着面へ付着させ、次にリザーバタンクを
元の直立姿勢へ戻して、スラッシュ成形型の粉体付着面
から余分な粉体を落下させる工程が採用されている。In the conventional slush molding method for powdered resin, a heated slush mold is placed over the upper opening of a reservoir tank containing powder, and at the same time, the heated slush mold is sealed. The powder adhesion surface of the slush mold is directed towards the inside of the reservoir tank, and by inverting the reservoir tank in this state, the powder inside is attached to the powder adhesion surface of the slush mold, and then the reservoir tank is returned to its original upright position. A process is adopted in which the mold is returned to its original position and excess powder is dropped from the powder adhesion surface of the slush mold.
しかし、従来のスラッシュ成形方法では、スラッシュ成
形型の付着面に対し、粉体が塊状になって不均一な状態
で落下する傾向があるので、スラッシュ成形型の粉体付
着面に均一に付着せず、均一な厚さの成形品を得ること
が困難であるという問題があった。However, in the conventional slush molding method, the powder tends to form lumps and fall unevenly on the adhesion surface of the slush mold. First, there was a problem in that it was difficult to obtain molded products of uniform thickness.
（発明が解決しようとする課題）
本発明はこのような従来の問題を解決するためになされ
たもので、その目的はスラッシュ成形型の付着面に対し
リザーバタンク内の粉体が塊状になって落下するのを防
ぎ、スラッシュ成形型の粉体付着面に粉体を均一に付着
させることができるスラッシュ成形用粉体の付着方法及
び装置を提供することにある。(Problems to be Solved by the Invention) The present invention was made to solve such conventional problems, and its purpose is to prevent the powder in the reservoir tank from clumping against the adhesion surface of the slush mold. An object of the present invention is to provide a method and apparatus for applying powder for slush molding, which can prevent the powder from falling and uniformly adhere the powder to the powder adhering surface of a slush mold.
（課題を解決するための手段）
本発明の方法はスラッシュ成形用樹脂の粉体を収容した
リザーバタンク内へ加圧空気を供給して、前記粉体を常
時液体状に流動化させておき、次に、前記リザーバタン
クの上方開口部にスラッシュ成形型を被せて、前記リザ
ーバタンクの上方開口部を密閉するとともに、同スラッ
シュ成形型の加熱済みの粉体付着面を前記リザーバタン
クの内部へ向は次に前記リザーバタンクを反転させて流
動状態の粉体を前記スラッシュ成形型の粉体付着面に付
着させ、次に前記リザーバタンクを元の直立姿勢に戻し
て、前記スラッシュ成形型の粉体付着面から流動状態の
余分な粉体を落下させることを特徴とするスラッシュ成
形用粉体の付着方法である。(Means for Solving the Problems) The method of the present invention includes supplying pressurized air into a reservoir tank containing slush molding resin powder to constantly fluidize the powder into a liquid state. Next, a slush mold is placed over the upper opening of the reservoir tank to seal the upper opening of the reservoir tank, and the heated powder adhesion surface of the slush mold is directed into the inside of the reservoir tank. Next, the reservoir tank is turned over to deposit the fluid powder on the powder adhesion surface of the slush mold, and then the reservoir tank is returned to its original upright position to deposit the powder in the slush mold. This is a method for attaching powder for slush molding, which is characterized by dropping excess powder in a fluid state from an attachment surface.
本発明の装置はスラッシュ成形用樹脂の粉体を収容する
とともに、スラッシュ成形型により密閉される上方開口
部を有するリザーバタンクと、該リザーバタンクの上方
開口部に被せられた前記スラッシュ成形型を同リザーバ
タンクに対して固定すにことにより、該リザーバタンク
の上方開口部を密閉するとともに、前記スラッシュ成形
型の加熱済みの粉体付着面を同リザーバタンクの内部へ
向いた状態に保持する型取付装置と、前記リザーバタン
クの内部へ加圧空気を導入して、同リザーバタンク内の
粉体を液体状に流動化させるエアー供給装置と、前記リ
ザーバタンクをほぼ水平な回転軸心の周りで回転させる
駆動装置とを具備し、該駆動装置は、前記リザーバタン
クを反転させることにより流動状態にされた粉体を前記
スラッシュ成形型の粉体付着面に付着させ、次に前記リ
ザーバタンクを元の姿勢に戻して、前記スラッシュ成形
型の粉体付着面から流動状態の余分な粉体を落下させる
ようにしたことを特徴とするスラッシュ成形用粉体の付
着装置である。The apparatus of the present invention includes a reservoir tank having an upper opening that accommodates resin powder for slush molding and is sealed by a slush mold, and the slush mold that is placed over the upper opening of the reservoir tank. Mold mounting that seals the upper opening of the reservoir tank by fixing it to the reservoir tank, and also holds the heated powder adhesion surface of the slush molding mold facing the inside of the reservoir tank. an air supply device that introduces pressurized air into the reservoir tank to fluidize the powder in the reservoir tank into a liquid state, and rotates the reservoir tank around a substantially horizontal axis of rotation. and a drive device that attaches the fluidized powder by inverting the reservoir tank to the powder adhesion surface of the slush mold, and then returns the reservoir tank to its original state. This is a powder adhesion device for slush molding, characterized in that the slush mold is returned to the posture and excess powder in a fluid state is dropped from the powder adhesion surface of the slush mold.
（作 用）
上記スラッシュ成形用粉体の付着装置においては、先づ
別の加熱炉等で加熱されたスラッシュ成形型がリザーバ
タンクの上方開口部へ所定の姿勢で被せられる。そのリ
ザーバタンク内には予め充分な多量の粉体が収容されて
おり、この粉体は前記エアー供給装置により加圧空気を
圧入されて水のような液体状になるまで常時流動化され
ている。(Function) In the above-mentioned slush molding powder adhesion device, a slush mold heated in a separate heating furnace or the like is first placed over the upper opening of the reservoir tank in a predetermined posture. A sufficient amount of powder is stored in the reservoir tank in advance, and this powder is constantly fluidized by pressurized air being injected by the air supply device until it becomes a liquid like water. .
スラッシュ成形型で上方開口部を密閉されたリザーバタ
ンクは駆動装置により反転され、その中の流動状態の粉
体がスラッシュ成形型の粉体付着面上に均一に落下して
所要量が付着する。次にリザーバタンクは元の状態に戻
され、スラッシュ成形型の粉体付着面から余分な流動状
態の粉体が落下する。その後スラッシュ成形型はリザー
バタンクから取り外され、次段の工程へ送られる。The reservoir tank whose upper opening is sealed with a slush mold is turned over by a driving device, and the powder in a fluid state inside falls uniformly onto the powder adhesion surface of the slush mold to adhere in the required amount. Next, the reservoir tank is returned to its original state, and excess fluid powder falls from the powder adhesion surface of the slush mold. The slush mold is then removed from the reservoir tank and sent to the next step.
（実施例） 以下、図面を参照して実施例を説明する。(Example) Examples will be described below with reference to the drawings.
第１図及び第２図は本発明による粉体付着装置を示し、
この粉体付着装置はスラッシュ成形用樹脂の粉体１を収
容する箱形容器状のリザーバタンク２を具備している。1 and 2 show a powder deposition device according to the present invention,
This powder adhering device is equipped with a box-shaped reservoir tank 2 that accommodates a powder 1 of resin for slush molding.
リザーバタンク２は適宜の架台３により取付けられてい
る。架台３はリザーバタンク２を水平軸心の周りで回転
できるように支持している。The reservoir tank 2 is mounted on a suitable frame 3. The pedestal 3 supports the reservoir tank 2 so as to be rotatable around a horizontal axis.
リザーバタンク２の上方開口部４には予め熱風炉等で加
熱されたスラッシュ成形型５が被せられる。なお、スラ
ッシュ成形型５には、これを持ち上げるための把持軸５
ａが設けられている。スラッシュ成形型５は上述のよう
に被せられる際、リザーバタンク２の上方開口部４を密
閉状態に閉鎖すると同時に、その粉体付着面６はリザー
バタンク２の内側へ向けられる。リザーバタンク２の上
方開口部４近傍には、スラッシュ成形型５をリザーバタ
ンク２に対して固定するための型取付装置７が設けられ
ている。型取付装置７はスラッシュ成形型５の基端部周
囲をリザーバタンク２に対して押さえ付ける枠状の押圧
板８と、押圧板８を加圧する所望数の流体シリンダ９と
を有している。The upper opening 4 of the reservoir tank 2 is covered with a slush mold 5 that has been heated in advance with a hot air stove or the like. Note that the slush mold 5 has a grip shaft 5 for lifting it.
A is provided. When the slush mold 5 is covered as described above, the upper opening 4 of the reservoir tank 2 is closed in a sealed state, and at the same time, the powder adhering surface 6 is directed toward the inside of the reservoir tank 2. A mold attachment device 7 for fixing the slush mold 5 to the reservoir tank 2 is provided near the upper opening 4 of the reservoir tank 2 . The mold mounting device 7 includes a frame-shaped pressing plate 8 that presses the base end portion of the slush mold 5 against the reservoir tank 2, and a desired number of fluid cylinders 9 that pressurizes the pressing plate 8.
リザーバタンク２の下部には、リザーバタンク２内へ常
時比較的低圧で、且つ多量の加圧空気Ａを供給して、そ
の中の粉体１を水のように液体状に流動化させるための
エアー供給装置（図示せず）からのエアーホース１０が
接続されている。エアーホース１０は柔軟で、リザーバ
タンク２の運動に追従できるように適宜な長さを有する
ものであり、エアーホースｌＯからの加圧空気Ａはリザ
ーバタンク２の内部下方に張設された多孔板１１を介し
て粉体ｌへ供給される。多孔板１１は例えばキャンパス
のような多孔質のものであって、空気を通すと同時に多
量の粉体１を洩れなく載置可能な材料から作られている
。In the lower part of the reservoir tank 2, a large amount of pressurized air A is always supplied at a relatively low pressure into the reservoir tank 2 to fluidize the powder 1 therein into a liquid state like water. An air hose 10 from an air supply device (not shown) is connected. The air hose 10 is flexible and has an appropriate length so as to follow the movement of the reservoir tank 2, and the pressurized air A from the air hose 10 is supplied to a perforated plate stretched below the inside of the reservoir tank 2. 11 to the powder l. The perforated plate 11 is porous, such as canvas, and is made of a material that allows air to pass through and at the same time allows a large amount of powder 1 to be placed thereon without leaking.
また、前記架台３上にはリザーバタンクを水平な回転軸
心の周りでほぼ１８０°もしくは、３６０ 。Further, the reservoir tank is mounted on the pedestal 3 at an angle of about 180 degrees or 360 degrees around the horizontal axis of rotation.
にわたって往復回転させるための駆動装置１２が設けら
れている。駆動装置１２は一般的な電動モータや軸継手
等から構成される既知構造のものである。A drive device 12 is provided for reciprocating rotation over the entire length. The drive device 12 has a known structure including a general electric motor, a shaft coupling, and the like.
次に、上述のように構成された粉体付着装置の動作を説
明することにより、本発明の粉体付着方法の実施例を説
明する。Next, an embodiment of the powder adhesion method of the present invention will be described by explaining the operation of the powder adhesion device configured as described above.
初めに、リザーバタンク２内には多量の粉体１を収容し
、この粉体ｌはエアー供給装置のエアホース１０からの
比較的低圧で、且つ多量の加圧空気Ａを多孔板１１を介
して供給することにより、常時水のように流動化してお
（。次に、別の場所で加熱済みのスラッシュ成形型５を
所定の姿勢でリザーバタンク２に被せ、これの上方開口
部４を閉鎖すると同時に、スラッシュ成形型５の粉体付
着面６をリザーバタンク２の内側へ向ける。その状態で
スラッシュ成形型５は型取付装置７によりリザーバタン
ク２に対して固定する。次に、駆動装置１２によりリザ
ーバタンク２を反転させ、その中の粉体ｌをスラッシュ
成形型５の粉体付着面６上へ落下させる。この時、粉体
ｌは水のように流動して粉体付着面６上に円滑に且つ均
一に付着する。First, a large amount of powder 1 is stored in the reservoir tank 2, and this powder 1 is supplied with relatively low pressure and large amount of pressurized air A from the air hose 10 of the air supply device through the perforated plate 11. By supplying the slush mold 5, it is constantly fluidized like water (Next, the slush mold 5, which has been heated elsewhere, is placed over the reservoir tank 2 in a predetermined position, and the upper opening 4 is closed. At the same time, the powder adhesion surface 6 of the slush mold 5 is directed toward the inside of the reservoir tank 2. In this state, the slush mold 5 is fixed to the reservoir tank 2 by the mold attachment device 7. Next, the drive device 12 The reservoir tank 2 is turned over and the powder l therein is dropped onto the powder adhesion surface 6 of the slush mold 5. At this time, the powder l flows like water and falls onto the powder adhesion surface 6. Adheres smoothly and evenly.
次に、駆動装置１２はリザーバタンク２をもとの直立姿
勢に戻し、その中の粉体ｌのうちの余分なものを粉体付
着面６から落下させる。その結果、粉体付着面６上には
粉体１が溶融してなる均一な所要厚さの皮膜が形成され
る。その後スラッシュ成形型５はリザーバタンク２から
取り外され、次の工程へ移送される。Next, the drive device 12 returns the reservoir tank 2 to its original upright position and causes the excess powder l in it to fall from the powder adhesion surface 6. As a result, on the powder adhesion surface 6, a film of uniform required thickness is formed by melting the powder 1. Thereafter, the slush mold 5 is removed from the reservoir tank 2 and transferred to the next process.
（発明の効果）
以上説明してきたように、本発明の方法及び装置による
と、リザーバタンク内の粉体を常時加圧空気により水の
ように液体状に流動化しておくので、粉体は均−且つ円
滑にスラッシュ成形型の粉体付着面に付着することが可
能となり、均一な厚さを有する品質の優れた成形品を作
ることができる。(Effects of the Invention) As explained above, according to the method and apparatus of the present invention, the powder in the reservoir tank is constantly fluidized into a liquid state like water by pressurized air, so the powder is uniformly distributed. - Moreover, it becomes possible to smoothly adhere the powder to the powder adhesion surface of the slush mold, and it is possible to produce a molded product with uniform thickness and excellent quality.
第１図は本発明の一実施例に係る粉体付着装置の概略正
面図、第２図は第１図のｎ−ｎ線に沿って取られた概略
縦断面図である。
１−・−・−・−・−粉体、２−−−−−−−・−・リ
ザーバタンク、３−・−・・架台、４−・−−−−−−
−一上方開口部、５・・−・・−・・−・・スラ・７シ
ユ成形型、５ ａ−−−−−・−・−把持軸、６・−−
一−−−・−粉体付着面、７−・−−−−一−・・・型
取付装置、８−−−−−〜−−−−押圧板、９−−−−
−・−流体シリンダ、ＩＯ−・−・・・・−エアーホー
ス、１１・−・−・−−−−御名孔板、１２−・・・・
・−・・駆動装置、Ａ・−−−−一・・−・−加圧空気
。FIG. 1 is a schematic front view of a powder deposition apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic longitudinal sectional view taken along line nn in FIG. 1. 1-・--・--・--powder, 2----------・reservoir tank, 3--・-・mounting frame, 4-・-----
-1 upper opening, 5.--.--..slur.7 mold, 5 a.--.gripping shaft, 6.--
1-----Powder adhesion surface, 7-----1--Mold mounting device, 8--------Press plate, 9-----
−・−Fluid cylinder, IO−・−・・・Air hose, 11・−・−・−−−Gonahole plate, 12−・・・
・・・・Drive device, A・---−−1・・・・− Pressurized air.
Claims (2)
タンク内へ加圧空気を供給して、前記粉体を常時液体状
に流動化させておき、次に前記リザーバタンクの上方開
口部にスラッシュ成形型を被せて、前記リザーバタンク
の開口部を密閉するとともに、同スラッシュ成形型の加
熱済みの粉体付着面を前記リザーバタンクの内部へ向け
、次に前記リザーバタンクを反転させて流動状態の粉体
を前記スラッシュ成形型の粉体付着面に付着させ、次に
前記リザーバタンクを元の直立姿勢に戻して、前記スラ
ッシュ成形型の粉体付着面から流動状態の余分な粉体を
落下させることを特徴とするスラッシュ成形用粉体の付
着方法。(1) Pressurized air is supplied into a reservoir tank containing slush molding resin powder to constantly fluidize the powder into a liquid state, and then slush molding is carried out at the upper opening of the reservoir tank. Cover the reservoir tank with a mold and seal the opening of the reservoir tank, and direct the heated powder adhering surface of the slush mold toward the inside of the reservoir tank.Next, turn the reservoir tank over and place it in a fluid state. Powder is attached to the powder adhesion surface of the slush mold, and then the reservoir tank is returned to its original upright position to allow excess powder in a fluid state to fall from the powder adhesion surface of the slush mold. A method for attaching powder for slush molding, characterized by:
、スラッシュ成形型により閉鎖される上方開口部を有す
るリザーバタンクと、該リザーバタンクの上方開口部に
被せられた前記スラッシュ成形型を同リザーバタンクに
対して固定することにより、同リザーバタンクの上方開
口部を密閉するとともに、前記スラッシュ成形型の加熱
済みの粉体付着面を同リザーバタンクの内部へ向けた状
態に保持する型取付装置と、前記リザーバタンクの内部
へ加圧空気を導入して、該リザーバタンク内の粉体を液
体状に流動化させるエアー供給装置と、前記リザーバタ
ンクをほぼ水平な回転軸心の周りで回転させる駆動装置
とを具備し、前記駆動装置は、前記リザーバタンクを反
転させることにより流動状態にされた粉体を前記スラッ
シュ成形型の粉体付着面に付着させ、次に前記リザーバ
タンクを元の姿勢に戻して、前記スラッシュ成形型の粉
体付着面から流動状態の余分な粉体を落下させるように
したことを特徴とするスラッシュ成形用粉体の付着装置
。(2) A reservoir tank that accommodates slush molding resin powder and has an upper opening that is closed by a slush mold, and the slush mold that is placed over the upper opening of the reservoir tank. a mold mounting device that seals the upper opening of the reservoir tank and holds the heated powder adhesion surface of the slush mold in a state facing the inside of the reservoir tank by fixing it to the reservoir tank; an air supply device that introduces pressurized air into the reservoir tank to fluidize the powder in the reservoir tank into a liquid state; and a drive device that rotates the reservoir tank around a substantially horizontal axis of rotation. The driving device is configured to invert the reservoir tank to cause the fluidized powder to adhere to the powder adhesion surface of the slush mold, and then return the reservoir tank to its original position. A powder adhesion device for slush molding, characterized in that excess powder in a fluid state is dropped from the powder adhesion surface of the slush mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19214888A JPH0241217A (en) | 1988-08-02 | 1988-08-02 | Method and apparatus for adhering slush molding powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19214888A JPH0241217A (en) | 1988-08-02 | 1988-08-02 | Method and apparatus for adhering slush molding powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0241217A true JPH0241217A (en) | 1990-02-09 |
Family
ID=16286498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19214888A Pending JPH0241217A (en) | 1988-08-02 | 1988-08-02 | Method and apparatus for adhering slush molding powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0390322A (en) * | 1989-09-01 | 1991-04-16 | Toray Eng Co Ltd | Powder box for slush molding |
| JP2002337172A (en) * | 2001-05-21 | 2002-11-27 | Nishikawa Kasei Co Ltd | Powder slush molding method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59192524A (en) * | 1983-04-15 | 1984-10-31 | Mitsuboshi Belting Ltd | Manufacture of synthetic resin skin body |
| JPS6219217B2 (en) * | 1980-07-21 | 1987-04-27 | Sanyo Denki Seisakusho Kk |
-
1988
- 1988-08-02 JP JP19214888A patent/JPH0241217A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6219217B2 (en) * | 1980-07-21 | 1987-04-27 | Sanyo Denki Seisakusho Kk | |
| JPS59192524A (en) * | 1983-04-15 | 1984-10-31 | Mitsuboshi Belting Ltd | Manufacture of synthetic resin skin body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0390322A (en) * | 1989-09-01 | 1991-04-16 | Toray Eng Co Ltd | Powder box for slush molding |
| JP2002337172A (en) * | 2001-05-21 | 2002-11-27 | Nishikawa Kasei Co Ltd | Powder slush molding method |
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