JPS60139410A - Method and apparatus for heating mold for resin molding - Google Patents
Method and apparatus for heating mold for resin moldingInfo
- Publication number
- JPS60139410A JPS60139410A JP24755483A JP24755483A JPS60139410A JP S60139410 A JPS60139410 A JP S60139410A JP 24755483 A JP24755483 A JP 24755483A JP 24755483 A JP24755483 A JP 24755483A JP S60139410 A JPS60139410 A JP S60139410A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- particles
- heating
- fluidized bed
- air
- 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.)
- Granted
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は樹脂製表皮材などを成形する金型の加熱方法及
びその装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for heating a mold for molding a resin skin material and the like.
車両シートの表皮材などを所定形状に成形する手段とし
て従来からインジェクション成形、フロー成形等を適用
している。しかしながら斯る手段による場合には型製作
に時間とコストがかかり、且つ複雑形状の製品を得るの
が困難である。そのためゾル状樹脂を金型成形面に付着
させ、金型を加熱することで溶融樹脂層を形成し、これ
を冷却して製品として取り出すスラッシュ成形、或いは
加熱さｉ″した金型を回転せしめることで金型成形面に
樹脂層を形成するようにした回転成形が考えられる。BACKGROUND ART Injection molding, flow molding, etc. have been conventionally used as means for molding the skin material of vehicle seats into a predetermined shape. However, using such means requires time and cost to manufacture the mold, and it is difficult to obtain a product with a complex shape. For this reason, slush molding involves attaching a sol-like resin to the molding surface and heating the mold to form a molten resin layer, which is then cooled and taken out as a product, or by rotating the heated mold. Rotational molding is considered in which a resin layer is formed on the molding surface of the mold.
そして、スラッシュ成形成いは回転成形において金型を
加熱する一般的な手法として、熱風により金型を加熱す
る方法、高温の液体又は蒸気により加熱する方法、ヒー
タを金型内に埋設する方法或いは高周波、マイクロ波に
よる４％ ４加熱方法等が考えられるが、先ず、熱風に
よる加熱は時間がかかり、液体或いは蒸気などの熱媒体
を用いる加熱では金型の構造が複雑且つ高価となシ、高
周波又はマイクロ波若しくはヒータによる加熱では均一
加熱が困難である等の不利がある。General methods of heating the mold in slush forming or rotational molding include heating the mold with hot air, heating with high-temperature liquid or steam, embedding a heater in the mold, or 4% heating methods such as high frequency and microwave heating are possible, but first, heating with hot air takes time, and heating using a heat medium such as liquid or steam requires a complicated and expensive mold structure. Alternatively, heating using microwaves or a heater has disadvantages such as difficulty in uniform heating.
このため第１図に示すように、炉１０１内に受台１０２
を設け、この受台１０２上に金型１０３を成形面１０３
ａを下側にしてセットし、上方から加熱されたアルミナ
粒子１０４等を充填して金型１Ｃｉ３を加熱する方法が
考えられるが、この方法による場合には金型１０３と接
触する粒子１０４の温度が急激に低下し金型を所望の温
度まで加熱するのに時間がかかり、また粒子１０４の温
度低下も部分毎に異なるため、金型１０３を均一加熱で
きないという問題がある。For this reason, as shown in FIG.
A mold 103 is placed on the molding surface 103 on this pedestal 102.
A conceivable method is to heat the mold 1Ci3 by setting the mold 1Ci3 with A facing downward and filling it with heated alumina particles 104 from above, but in this method, the temperature of the particles 104 in contact with the mold 103 There is a problem that the mold 103 cannot be heated uniformly because the temperature decreases rapidly and it takes time to heat the mold to the desired temperature, and the temperature drop of the particles 104 also differs from part to part.
また第２図に示すように、炉内に多孔板１０５を配設し
、この多孔板１０５の孔１０６の部分を王冠を伏せた形
状のエアー分散部材１０７で覆べ多孔板１０５上万に充
填される粒子１０４中に孔１０６及びエアー分散部材１
０７を介してエア供給部１０８からエアーを供給し、粒
子１０４を流動せしめるとともにヒータにより粒子１０
４を加熱し、この流動状態にある加熱された粒子１０４
を金型に接触せしめて金型を加熱する手段も考えられる
。Further, as shown in FIG. 2, a perforated plate 105 is disposed in the furnace, and the holes 106 of this perforated plate 105 are covered with an air dispersion member 107 having a crown facing down. Holes 106 and air dispersion member 1 in particles 104
Air is supplied from the air supply section 108 through the air supply section 108 to make the particles 104 flow, and the particles 10 are caused to flow by the heater.
4 and heated particles 104 in this fluid state.
It is also possible to heat the mold by bringing it into contact with the mold.
しかしながら、この方法による場合には、粒子１０４中
を上昇する気泡１０９０体積が大きく、バブリングを生
じ、流動床表面で気泡１０９が破裂した際に、粒子１０
４が金型内に入って成形面に付着し、これが後に表皮材
中の異物となって残るという問題がある。However, in this method, the volume of the bubbles 1090 rising in the particles 104 is large, causing bubbling, and when the bubbles 109 burst on the surface of the fluidized bed, the particles 1090
4 enters the mold and adheres to the molding surface, which later remains as foreign matter in the skin material.
本発明は上述した従来の金型の加熱における問題点を改
善すべく成したものであり、金型の加熱時間を短縮でき
、且つ均一加熱が可能で、もって金型により成形される
樹脂表皮材の厚みを一定にでき、作業効率の向上を図れ
る樹脂成形用金型の加熱方法及び装置を提供することを
目的とする。The present invention was made in order to improve the above-mentioned problems in heating the conventional mold, and it is possible to shorten the heating time of the mold, and to uniformly heat the resin skin material to be molded by the mold. An object of the present invention is to provide a heating method and apparatus for a resin molding mold, which can maintain a constant thickness and improve work efficiency.
この目的を達成すべく本発明に係る加熱方法は、金属或
いは無機物等からなる粒子群を加熱するとともに該粒子
群内にエアーを吹き込むことで流動床を形成し、この流
動床内に内面を成形面とした金型の外面をもって浸漬し
、該金型の外面と加熱媒体としての粒子とを接触せしめ
て金型を加熱するとともに、金型の成形面に粒子が付着
しないようにしたことをその要旨とする。１だ、本発明
に係る加熱装置は加熱炉内を上下の室に区画し、上部室
に粒子群とこの粒子群を加熱するヒータを配設し、下部
室からのエアーを上部室に供給することで該粒子群にて
流動床を形成し、この流動床に内面を成形面とした金型
の外面を浸漬するとともに、該金型内に粒子が入り込ま
ないようにするために、上下の室をステンＶス等の焼結
フィルターで区画するか、或いは加熱炉の上方開口にフ
ィルター材からなる蓋体を設けるようにしたことをその
要旨とす、る。In order to achieve this objective, the heating method according to the present invention involves heating a group of particles made of metal or inorganic material, etc., and blowing air into the group of particles to form a fluidized bed, and forming an inner surface in this fluidized bed. The method of heating the mold by heating the mold by bringing the outer surface of the mold into contact with the particles as a heating medium and preventing the particles from adhering to the molding surface of the mold. This is the summary. 1. The heating device according to the present invention divides the inside of the heating furnace into upper and lower chambers, arranges a particle group and a heater for heating this particle group in the upper chamber, and supplies air from the lower chamber to the upper chamber. This forms a fluidized bed with the particles, and the outer surface of the mold with the inner surface as the molding surface is immersed in this fluidized bed.In order to prevent particles from entering the mold, upper and lower chambers are The gist of the heating furnace is to partition the heating furnace with a sintered filter such as stainless steel, or to provide a lid made of a filter material over the upper opening of the heating furnace.
以下に本発明の実施例を第３図乃至第７図に基いて説明
する。Embodiments of the present invention will be described below with reference to FIGS. 3 to 7.
第３図は本発明に係る加熱装置の縦断面図であり、１は
加熱炉であ、す、この加熱炉１は略々ボックス状を成し
、その上端を開口２としている。加熱炉１内には水平方
向にフィルター３が架設さへこのフィルター３にて加熱
炉１内を上部室Ｓ１及び下部室Ｓ２に区画している。フ
ィルター３は第４図Ａの拡大平面図及び第４図Ｂの拡大
断面図に示すようにステンレス繊維４等の金属繊維から
なる板状体を焼結してなり、フィルター３の空孔５の径
は例えば４〜２５μｍとする。FIG. 3 is a longitudinal cross-sectional view of a heating device according to the present invention, in which 1 is a heating furnace. This heating furnace 1 is approximately box-shaped, and has an opening 2 at its upper end. A filter 3 is horizontally installed in the heating furnace 1, and the filter 3 divides the inside of the heating furnace 1 into an upper chamber S1 and a lower chamber S2. As shown in the enlarged plan view of FIG. 4A and the enlarged sectional view of FIG. The diameter is, for example, 4 to 25 μm.
また、下部室Ｓ２の側壁にはエアー導入口６を設け、下
部室Ｓ２内に圧縮エアーを供給するようにしておｐ１上
部室Ｓｌ内には金属又は無機物などの粒子、例えばアル
ミナ粒子７を充填し、更にこのアルミナ粒子７を加熱す
るヒータ８を配設している。Further, an air inlet 6 is provided in the side wall of the lower chamber S2 to supply compressed air into the lower chamber S2, and the upper chamber Sl is filled with particles of metal or inorganic material, for example, alumina particles 7. Furthermore, a heater 8 for heating the alumina particles 7 is provided.
ここでアルミナ粒子７は例えば８０メツシユで比重２５
のものを用いる。Here, the alumina particles 7 are, for example, 80 mesh and have a specific gravity of 25.
Use the one.
次に上記の如き構成の加熱装置を用いた金型の加熱方法
について述べる。Next, a method of heating a mold using the heating device configured as described above will be described.
先ず、ヒータ８によってアルミナ粒子７を２００〜５０
０Ｃに加熱するとともにエアー導入口６を介して下部室
Ｓ２にエアーを導入し、下部室８２内に導入されたエア
ーをフィルター３ｆ：介して上部室ＳＬ内に供給する。First, the alumina particles 7 are heated to 200 to 50 by the heater 8.
While heating to 0C, air is introduced into the lower chamber S2 through the air inlet 6, and the air introduced into the lower chamber 82 is supplied into the upper chamber SL through the filter 3f.
するとアルミナ粒子７は吹き込まれたエアーにより流動
状態となり、流動床９が形成される。ここで、供給する
エアー量は１５００〜３０００１Ｖｍｍ とする。そし
て、上部室Ｓｌ内に供給されるエアーはフィルター３が
多孔質の焼結板からなっているので、極めて細かい気泡
となって供給され、従来の如くバブリングを生じること
がない。Then, the alumina particles 7 become fluidized by the blown air, and a fluidized bed 9 is formed. Here, the amount of air to be supplied is 1500 to 30001 Vmm. Since the filter 3 is made of a porous sintered plate, the air supplied into the upper chamber SI is supplied in the form of extremely fine bubbles, and no bubbling occurs as in the conventional case.
次いで、所定温度の流動床９内に金型１０を浸漬する。Next, the mold 10 is immersed in the fluidized bed 9 at a predetermined temperature.
この浸漬にあたっては成形面である金型１０の内面１０
．ａに粒子７が接着しないように金型１０の外面１０ｂ
を流動床９内に２０〜６０秒程度浸漬する。すると、第
・５図に示す如く、加熱媒体としてのアルミナ粒子７が
金型１ｏの外面１０ｂに接触し、金型１０との間で熱交
換を行う。ところで、流動床９内にあっては常にアルミ
ナ粒子７が流動しているため、金型１０の外面１０ｂに
は次々に高温のアルミナ粒子γが接触し、短時間のうち
に金型１０を１５０〜３５０Ｃ−Ｅで加熱する。During this immersion, the inner surface 10 of the mold 10, which is the molding surface,
．． the outer surface 10b of the mold 10 so that the particles 7 do not adhere to the
is immersed in the fluidized bed 9 for about 20 to 60 seconds. Then, as shown in FIG. 5, the alumina particles 7 as a heating medium come into contact with the outer surface 10b of the mold 1o and exchange heat with the mold 10. By the way, since the alumina particles 7 are constantly flowing in the fluidized bed 9, the high-temperature alumina particles γ come into contact with the outer surface 10b of the mold 10 one after another, and the mold 10 is heated up to 150% in a short time. Heat at ~350C-E.
次いで、金型１０を流動床９から引き上げ次工程に移す
。次工程ではスラッシュ成形又は回転成形により高温の
金型内面１０ａに溶融樹脂層を形成し、これを冷却する
ことで樹脂製表皮材を得る。Next, the mold 10 is lifted from the fluidized bed 9 and transferred to the next process. In the next step, a molten resin layer is formed on the hot mold inner surface 10a by slush molding or rotational molding, and the resin skin material is obtained by cooling this.
第６図は加熱装置の別実施例を示すものであり、前記実
施例と同一の部材については同一の番号を付している。FIG. 6 shows another embodiment of the heating device, in which the same members as in the previous embodiment are given the same numbers.
即ち、前記実施例と異なる点は、ステンンス焼結フィル
ター３の代りに多数の孔１１を穿設したエアー分散板１
２を設け、更に加熱炉１の開ｏ２を例えばステンレス焼
結フィルター材からなる蓋体１３で覆い、この蓋体１３
の中央に形成した孔１４に金型１０のフランジ部１０ｃ
を載せ、金型１０の外面１０ｃを流動床９内に浸漬せし
めたま一分散板１２ＶＣよって分散される気泡の大きさ
はｔｅｔｌ記実施例に比べ太きくなり、バブリングを生
ずることも考えられるが、蓋体１３ｆ：設けているため
金型１０の内面１０ａに飛散したアルミナ粒子７が付着
することはない。That is, the difference from the above embodiment is that the air dispersion plate 1 having a large number of holes 11 is provided instead of the stainless steel sintered filter 3.
2 is provided, and the opening o2 of the heating furnace 1 is further covered with a lid body 13 made of, for example, stainless steel sintered filter material.
The flange portion 10c of the mold 10 is inserted into the hole 14 formed in the center of the
The outer surface 10c of the mold 10 is immersed in the fluidized bed 9, and the size of the bubbles dispersed by the dispersion plate 12VC is larger than in the embodiment described above, and it is possible that bubbling may occur. Lid body 13f: Since it is provided, the scattered alumina particles 7 will not adhere to the inner surface 10a of the mold 10.
尚、エアー導入口６から供給されたエアーはフィルター
イ２からなる蓋体１３中を通過して外部に排出される。Note that the air supplied from the air inlet 6 passes through the lid 13 made of the filter 2 and is discharged to the outside.
捷た、いずれの実施例にあっても金型１ｏの上面開口は
開放しているが、該開口を別体として用意した蓋体で塞
ぐようにしてもよい。このようにすれば、粒子７の金型
１０内への飛散を更に確実に防止できるとともに、加熱
された金型１ｏの放熱を極力抑えることが可能となる。Although the top opening of the mold 1o is open in any of the embodiments, the opening may be closed with a separately prepared lid. In this way, scattering of the particles 7 into the mold 10 can be more reliably prevented, and the heat dissipation of the heated mold 1o can be suppressed as much as possible.
更に、ステンＶス焼結フィルター３と蓋体１３のいずれ
をも備えた加熱装置を用いるようにしてもよい。Furthermore, a heating device including both the stainless steel sintered filter 3 and the lid 13 may be used.
第７図は本発明方法と第１図に示した従来方法による場
合の金型昇温特性を示すグラフであり、グラフ中、線分
ａは本発明方法における金型温度と加熱時間との関係を
示し、線分すは従来方法における金型温度と加熱時間と
の関係を示し、線分Ｃは本発明におけるアルミナ粒子温
度と加熱時間との関係を示し、線分ｄは従来方法におけ
るアルミナ粒子温度と加熱時間との関係を示す。FIG. 7 is a graph showing the mold temperature rise characteristics when using the method of the present invention and the conventional method shown in FIG. 1. In the graph, line a is the relationship between mold temperature and heating time in the method of the present invention , line segment 2 shows the relationship between mold temperature and heating time in the conventional method, line segment C shows the relationship between alumina particle temperature and heating time in the present invention, and line segment d shows the relationship between alumina particle temperature and heating time in the conventional method. The relationship between temperature and heating time is shown.
先ず線分ａ、ｂ’ｉ比較すれば明らかな如く本発明方法
によれば短時間で金型を所定温度まで加熱し得ることが
分かる。また線分ｃ、ｄを比較すれば、本発明方法によ
る場合は金型外面と接触するアルミナ粒子の温度低下が
ないことが分かる。First, by comparing line segments a and b'i, it is clear that according to the method of the present invention, the mold can be heated to a predetermined temperature in a short time. Further, by comparing line segments c and d, it can be seen that in the method of the present invention, there is no temperature drop of the alumina particles in contact with the outer surface of the mold.
以上の説明で明らかなように本発明によれば、金型自体
に加熱のための特別な構造を設ける必要がないので金型
の製作が容易でコスト的に有利であり、加熱時間が短い
ので作業効率の向上につながり、また金型を均一に加熱
できるため後工程で金型内側面に形成される溶融樹脂層
の厚さも均一となり良好な製品を得ることができ、且つ
４００Ｃ程度まで金型を加熱することも可能なため溶融
温度の高い樹脂も容易に成形できる。As is clear from the above description, according to the present invention, there is no need to provide a special structure for heating in the mold itself, so the mold is easy to manufacture and cost-effective, and the heating time is short. This leads to improved work efficiency, and since the mold can be heated uniformly, the thickness of the molten resin layer formed on the inner surface of the mold in the subsequent process is also uniform, making it possible to obtain a good product. Since it is also possible to heat resin, resins with high melting temperatures can be easily molded.
そして特に、従来のエアー分散板に代え、ステンレス等
の多孔質焼結フィルターを用いれば、粒子を流動せしめ
る気泡を極めて細くすることができ、したがってバブリ
ングを防止できる。その結果、金型を流動床内へ押し込
む力を小さくすることができ、また作業環境をも良好な
ものとすることができる等多くの効果を発揮する。In particular, if a porous sintered filter made of stainless steel or the like is used in place of the conventional air dispersion plate, the air bubbles that cause the particles to flow can be made extremely thin, thereby preventing bubbling. As a result, the force for pushing the mold into the fluidized bed can be reduced, and the working environment can also be improved, among other effects.
第１図は従来の加熱装置の概略断面図、第２図は従来の
加熱装置の要部断面図、第３図は本発明に係る加熱装置
の断面図、第４図Ａはフィルターの拡大平面図、第４図
Ｂはフィルターの拡大断面図、第５図は粒子が金型外面
に接触している状態の拡大図、第６図は加熱装置の別実
施例を示す断面図、第７図は金型昇温特性を示すグラフ
である。
尚、図面中１は加熱炉、２は開口、３はフィルター、６
はエアー導入口、７は粒子、８はヒータ、９は流動床、
１０は金型、１０ａは金型内面、１０ｂは金型外面、１
２はエアー分散板、１３は蓋体、Ｓｌは上部室、Ｓ２は
下部室である。
特許出願人 本田技研工業株式会社
代 理 人 弁理士下 １）容一部
同 弁理士 大 橋 邦 彦
同 弁理士 小 山 有
第１図
第３図
第４、図
ｂ
第５図
°／
第６図
−一一一一一刀０熟時間ｓｅｃFIG. 1 is a schematic sectional view of a conventional heating device, FIG. 2 is a sectional view of essential parts of a conventional heating device, FIG. 3 is a sectional view of a heating device according to the present invention, and FIG. 4A is an enlarged plan view of a filter. Figure 4B is an enlarged cross-sectional view of the filter, Figure 5 is an enlarged view of particles in contact with the outer surface of the mold, Figure 6 is a cross-sectional view showing another embodiment of the heating device, and Figure 7 is a graph showing mold temperature increase characteristics. In addition, in the drawing, 1 is a heating furnace, 2 is an opening, 3 is a filter, and 6
is an air inlet, 7 is a particle, 8 is a heater, 9 is a fluidized bed,
10 is a mold, 10a is an inner surface of the mold, 10b is an outer surface of a mold, 1
2 is an air distribution plate, 13 is a lid, Sl is an upper chamber, and S2 is a lower chamber. Patent Applicant: Honda Motor Co., Ltd. Representative, Patent Attorney 1) Yobetsu Patent Attorney: Kunihiko Ohashi, Patent Attorney: Yu Koyama Figure 1 Figure 3 Figure 4, Figure b Figure 5 ° / Figure 6 Figure - 11111 0 ripening time sec
Claims (3)
ことで、流動状態にある多数の粒子からなる流動床内に
、内面を成形面とした樹脂成形用金型の外面を浸漬し、
この金型外面に加熱媚体として前記粒子を次々に接触せ
しめることで金型全体を加熱するとともに金型内に該粒
子が入り込まないようにしたことを特徴とする樹脂成形
用金型の加熱方法。(1) The outer surface of a resin molding mold with the inner surface as the molding surface is immersed in a fluidized bed made up of a large number of particles in a fluidized state by heating with a heater and blowing air,
A method for heating a mold for resin molding, characterized in that the entire mold is heated by successively bringing the particles into contact with the outer surface of the mold as a heating aphrodisiac, and the particles are prevented from entering the mold. .
してなるフィルターを設けて加熱炉内を上下の室に区画
し、前記下部室にはエアー導入口を設け、上部室内には
フィルターを介して供給されるエアーにより流動床を形
成する多数の粒子を充填するとともに該粒子を加熱する
ヒータを配設し該流動床内に内面を形成面とした樹脂成
形用金型の外面を浸漬するようにしたことを特徴とする
樹脂成形用金型の加熱装置。(2) A filter made of sintered stainless steel or the like is provided in a heating furnace with an opening at the top to divide the inside of the heating furnace into upper and lower chambers, an air inlet is provided in the lower chamber, and an air inlet is provided in the upper chamber. A large number of particles forming a fluidized bed are filled with air supplied through a filter, and a heater is provided to heat the particles. A heating device for a resin molding mold, characterized in that it is immersed.
て加熱炉内を上下の室に区画し、前記下部室にはエアー
導入口を設け、前記上部室内にはエアー分散板を介して
供給されるエアーにより流動床を形成する多数の粒子を
充填するとともに該粒子を加熱するヒータを配設し、更
に前記加熱炉の開口にはフィルター材からなる蓋体を設
け、この蓋体に内面を成形面とした樹脂成形用金型の外
面が前記流動床内に浸漬された状態で金型を保持する孔
部を形成したことを特徴とする樹脂成形用金型の加熱装
置。(3) An air distribution plate is provided in the heating furnace with an opening at the top to divide the heating furnace into upper and lower chambers, an air inlet is provided in the lower chamber, and an air distribution plate is provided in the upper chamber. A large number of particles forming a fluidized bed are filled with air supplied by the heating furnace, and a heater is provided to heat the particles.Furthermore, a lid body made of a filter material is provided at the opening of the heating furnace, and a lid body made of a filter material is provided on the opening of the heating furnace. 1. A heating device for a resin molding mold, characterized in that a hole is formed for holding the mold in a state where the outer surface of the resin molding mold is immersed in the fluidized bed, the inner surface being the molding surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24755483A JPS60139410A (en) | 1983-12-27 | 1983-12-27 | Method and apparatus for heating mold for resin molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24755483A JPS60139410A (en) | 1983-12-27 | 1983-12-27 | Method and apparatus for heating mold for resin molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60139410A true JPS60139410A (en) | 1985-07-24 |
| JPH0367844B2 JPH0367844B2 (en) | 1991-10-24 |
Family
ID=17165216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24755483A Granted JPS60139410A (en) | 1983-12-27 | 1983-12-27 | Method and apparatus for heating mold for resin molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60139410A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63237914A (en) * | 1987-03-26 | 1988-10-04 | Toyota Motor Corp | Slush molding method |
| US4867660A (en) * | 1986-04-11 | 1989-09-19 | Toyota Jidosha Kabushiki Kaisha | Foam slush molding apparatus |
| WO2020226660A1 (en) | 2019-05-09 | 2020-11-12 | Dustin Eplee | Fluidized bed rotational molding |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565917A (en) * | 1979-06-28 | 1981-01-22 | Komatsu Ltd | Fluidized bed hardening device |
| JPS57152417A (en) * | 1981-03-16 | 1982-09-20 | Komatsu Ltd | Heating furnace of fluidized bed type |
-
1983
- 1983-12-27 JP JP24755483A patent/JPS60139410A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565917A (en) * | 1979-06-28 | 1981-01-22 | Komatsu Ltd | Fluidized bed hardening device |
| JPS57152417A (en) * | 1981-03-16 | 1982-09-20 | Komatsu Ltd | Heating furnace of fluidized bed type |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867660A (en) * | 1986-04-11 | 1989-09-19 | Toyota Jidosha Kabushiki Kaisha | Foam slush molding apparatus |
| JPS63237914A (en) * | 1987-03-26 | 1988-10-04 | Toyota Motor Corp | Slush molding method |
| WO2020226660A1 (en) | 2019-05-09 | 2020-11-12 | Dustin Eplee | Fluidized bed rotational molding |
| EP3966013A4 (en) * | 2019-05-09 | 2023-05-10 | Energy Wall LLC | Fluidized bed rotational molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0367844B2 (en) | 1991-10-24 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |