JPS62264928A - Breaker plate material for plastic molding machine - Google Patents
Breaker plate material for plastic molding machineInfo
- Publication number
- JPS62264928A JPS62264928A JP61108535A JP10853586A JPS62264928A JP S62264928 A JPS62264928 A JP S62264928A JP 61108535 A JP61108535 A JP 61108535A JP 10853586 A JP10853586 A JP 10853586A JP S62264928 A JPS62264928 A JP S62264928A
- Authority
- JP
- Japan
- Prior art keywords
- ceramics
- breaker plate
- zirconia
- breaker
- plate
- 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
- 238000010137 moulding (plastic) Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 title claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 229910002077 partially stabilized zirconia Inorganic materials 0.000 claims description 4
- 238000000465 moulding Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 9
- 239000000843 powder Substances 0.000 abstract description 8
- 239000011347 resin Substances 0.000 abstract description 7
- 229920005989 resin Polymers 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003381 stabilizer Substances 0.000 abstract description 3
- 238000001354 calcination Methods 0.000 abstract 2
- 238000005498 polishing Methods 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 239000002184 metal Substances 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 239000011029 spinel Substances 0.000 description 2
- 229910052596 spinel Inorganic materials 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2909/00—Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
- B29K2909/02—Ceramics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、プラスチック成形機用ブレーカ−プレートに
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a breaker plate for a plastic molding machine.
［従来の技術］
プラスチック成形機用ブレーカ−プレートは、従来その
ほとんどが工具鋼等の金属材料のみでつくられている。[Prior Art] Conventionally, most breaker plates for plastic molding machines have been made only of metal materials such as tool steel.
［発明が解決しようとする問題点］
従来の金属製ブレーカ−プレートでは、プレートアウト
、汚れ等の問題があり、これがプラスチック成形機の運
転、特に長時間の運転に重大な影響をもたらす場合があ
るが、ブレーカ−プレート自体の価格の安さ等が理由で
、それらの問題はあまりかえりみられていなかった。[Problems to be solved by the invention] Conventional metal breaker plates have problems such as plate out and dirt, which can have a serious impact on the operation of plastic molding machines, especially on long-term operation. However, due to the low price of the breaker plate itself, these problems have not been addressed much.
（このプレートアウトおよび汚れは、プラスチックの加
工分野で使用される用語であって、「プレートアウト」
はブレーカ−プレート表面および内部穴に滞留する樹脂
中の添加剤物等の熱劣化物質であり、これが増加すると
、ブレーカ−プレートの内部穴がつまりスクリューモー
タ負荷が増大し、成形運転が不能となる。また、「汚れ
」はブレーカ−プレート内部穴にプラスチックが滞留し
それが熱劣化したちをいい、プレートアウト同様の問題
を起こす。）
また、近年、プラスチックに無機質、有機質、金属等の
フィラーを混入して、プラスチックの特性を広げようと
する動きが高まりつつある。(This plate-out and dirt is a term used in the field of plastic processing.
is a thermally degraded substance such as additives in the resin that stays on the surface of the breaker plate and in the internal holes, and when this increases, the internal holes of the breaker plate become clogged, increasing the load on the screw motor, making molding operation impossible. . In addition, "dirt" refers to plastic that accumulates in the internal holes of the breaker plate and deteriorates due to heat, causing problems similar to plate out. ) In addition, in recent years, there has been a growing movement to expand the properties of plastics by mixing inorganic, organic, metal, etc. fillers into them.
このようなフィラーの入ったプラスチックの成形に従来
の金属製ブレーカ−プレートを使用すると、ブレーカ−
プレートが摩耗しやすく、その寿命がごく短くなる。When conventional metal breaker plates are used to mold plastics containing fillers, the breaker
The plates are prone to wear and have a very short lifespan.
本発明は、このような従来のプラスチック成形機用ブレ
ーカ−プレートにおける欠点を解消したもの、すなわち
プレートアウトや汚れの少ない、かつ、耐摩耗性にすぐ
れたプラスチック成形機用ブレーカ−プレートを提供す
るものである。The present invention eliminates the drawbacks of conventional breaker plates for plastic molding machines, that is, provides a breaker plate for plastic molding machines that is less prone to plate out and dirt and has excellent wear resistance. It is.
［問題点を解決するための手段およびその作用］本発明
者らは、ジルコニア焼結体は強度および硬度が高いだけ
でなく、溶融したプラスチックが付着しにくく、これに
よって上記の問題が解決される事を見出し、本発明に到
達した。[Means for Solving the Problems and Their Effects] The present inventors have found that zirconia sintered bodies not only have high strength and hardness, but also have difficulty in adhering to molten plastic, which solves the above problems. They discovered this and arrived at the present invention.
すなわち、本発明は、ジルコニアを４ｏｗｔ％以上含む
セラミックスからなるプラスチック成形機用ブレーカ−
プレートを要旨とする。That is, the present invention provides a breaker for a plastic molding machine made of ceramics containing 4wt% or more of zirconia.
The plate is the gist.
本発明が適用されるプラスチック成形機用ブレーカ−プ
レートとして、たとえば、次のものをあげることができ
るが、これらに限定されるわけではない。Examples of breaker plates for plastic molding machines to which the present invention is applied include, but are not limited to, the following.
（１）単軸、２軸、押出機用ブレーカ−プレート（２）
２軸コニ力ル押出機用ブレーカープレート（３）その他
プラスチック加工に用いるブレーカ−プレート
本発明のブレーカ−プレートは、全体がセラミックスで
構成されたものであってもよく、また、プラスチックが
接触する部分にのみジルコニア４０νｔ％以上のセラミ
ックスを使用し、他の部分は金属製ケースとし、上記セ
ラミックス部材とを、焼バメ、接着またはカシメ等の方
法で支持させればよい。このセラミック部の厚みとして
は、０．１ｍｍ〜５■がよい。このようにして、とくに
大型のブレーカ−プレートの製作費を下げることができ
る。ジルコニア系セラミックスと金属との線膨張係数が
近似しているので、上記セラミックス−金属複合体は、
使用温度でその両者間の剥離がおこらない。(1) Breaker plate for single-screw, twin-screw, extruder (2)
Breaker plate for twin-screw conical extruder (3) Breaker plate used for other plastic processing The breaker plate of the present invention may be made entirely of ceramics, and the portion that comes into contact with plastic Ceramics containing 40 νt% or more of zirconia may be used only in the case, and the other parts may be made of a metal case, and the ceramic member may be supported by shrink fitting, adhesion, caulking, or the like. The thickness of this ceramic part is preferably 0.1 mm to 5 mm. In this way, the production costs, especially for large breaker plates, can be reduced. Since the linear expansion coefficients of zirconia ceramics and metal are similar, the above ceramic-metal composite has the following properties:
Peeling between the two does not occur at the operating temperature.
本発明のブレーカ−プレートのセラミックスの部分は、
ジルコニアを４ｏｗｔ％以上含まねばならない。これは
、ジルコニア焼結体のみからなるものであってもよく、
また８０νｔ％までは他のセラミックスが混じっていて
もよいことを意味する。他のセラミックスとしては、例
えば、アルミナ、スピネル、ムライト等をあげることが
できるが、アルミナとの混合セラミックスが硬度、耐摩
耗性等の点ですぐれている。また、ジルコニア含有量４
０νｔ％以上あればジルコニアがもつプラスチックとの
非親和性が維持され、プレートアウト、汚れによるトラ
ブルを小さくすることができる。The ceramic portion of the breaker plate of the present invention is
It must contain 4wt% or more of zirconia. This may consist only of zirconia sintered body,
This also means that other ceramics may be mixed up to 80vt%. Examples of other ceramics include alumina, spinel, and mullite, but ceramics mixed with alumina are superior in terms of hardness, wear resistance, and the like. In addition, the zirconia content is 4
If it is 0 νt% or more, the incompatibility of zirconia with plastics is maintained, and troubles caused by plate-out and stains can be reduced.
ジルコニアとしては、強度、靭性および耐熱性のよい部
分安定化ジルコニアがもっともよい。The best zirconia is partially stabilized zirconia, which has good strength, toughness, and heat resistance.
部分安定化ジルコニアに固溶させる安定化剤の適当な量
は、イツトリアでは１〜５モル％、カルシアでは２〜９
モル％、マグネシアでは８〜１０モル％、セリアでは８
〜３０モル％等である。The appropriate amount of stabilizer to be solid-dissolved in partially stabilized zirconia is 1 to 5 mol% for Ittria, and 2 to 9 mol% for Calcia.
mol%, 8 to 10 mol% for magnesia, 8 for ceria
~30 mol%, etc.
これらを２種以上固溶化させてもよい。その中でも、イ
ツトリア部分安定化ジルコニアは、とくに高強度かえら
れ、また２００℃付近における安定性にもすぐれており
、強度低下もなく、本発明の材料としてとくに適してい
る。Two or more of these may be dissolved in solid solution. Among them, itria partially stabilized zirconia has particularly high strength and excellent stability at around 200° C., and there is no decrease in strength, making it particularly suitable as a material for the present invention.
本発明のブレーカ−プレート材料の製造にあたっては、
焼結性のすぐれた微粉末を原料とする必要がある。ジル
コニアは湿式法でえられた１次粒子径２００〜４００人
の微粉末を、またアルミナ、スピネル、ムライト等は湿
式法または共沈法でえられた高純度粉末を用いるのが望
ましい。In manufacturing the breaker plate material of the present invention,
The raw material must be a fine powder with excellent sinterability. For zirconia, it is desirable to use a fine powder with a primary particle size of 200 to 400 particles obtained by a wet method, and for alumina, spinel, mullite, etc., to use a high purity powder obtained by a wet method or coprecipitation method.
この原料粉末をラバープレス法等によって所望の形に成
形し、焼成してセラミックスかえられる。この焼成法と
しては、常圧の焼結法でもよく、さらに熱間静水圧加圧
焼成法（旧Ｐ処理）を加えても良い。このようにして得
られたセラミックスをダイヤモンド砥石等で研削、研摩
し、所定の寸法および表面あらさに仕上げて、本発明に
使用するセラミックス部材かえられる。This raw material powder is molded into a desired shape by a rubber press method, etc., and fired to convert it into ceramics. As this firing method, a normal pressure sintering method may be used, and a hot isostatic pressure firing method (old P treatment) may be added. The ceramics thus obtained are ground and polished using a diamond grindstone or the like to achieve predetermined dimensions and surface roughness, and then the ceramic members used in the present invention can be changed.
［発明の効果］
本発明のブレーカ−プレートをプラスチックの成形に使
用することにより以下の効果をあげることができる。[Effects of the Invention] By using the breaker plate of the present invention in molding plastics, the following effects can be achieved.
（１）表面のきれいな製品を得ることができる。(1) A product with a clean surface can be obtained.
（２）長期連続運転を行ってもブレーカ−プレートにプ
レートアウト、汚れが発生しないのでモータ負荷が増大
せず、一定品質の製品かえられ、生産性向上につながる
。(2) Even after long-term continuous operation, no plate out or dirt occurs on the breaker plate, so the motor load does not increase, and products of constant quality can be replaced, leading to improved productivity.
（３）運転を停止しても、プラスチックがブレーカ−プ
レートに付着しにくいので、清掃が容易である。(3) Even when the operation is stopped, cleaning is easy because plastic does not easily adhere to the breaker plate.
（４）フィラーを多く添加したプラスチックを成形して
も、ブレーカ−プレートが摩耗しにくいので、プレート
の取換頻度が少ない。(4) Even if plastic with a large amount of filler is molded, the breaker plate is less likely to wear out, so the plate needs to be replaced less frequently.
（５）異常流動が発生しにくいので、従来のブレーカ−
プレートでは成形が困難であった低流動性樹脂の成形が
容易である。(5) Because abnormal flow is less likely to occur, conventional breakers
It is easy to mold low fluidity resin, which is difficult to mold with plates.
［実施例］
以下、本発明を具体例によって説明するが、本発明はこ
れに限定されるものではない。[Example] The present invention will be described below using specific examples, but the present invention is not limited thereto.
実施例１〜３、比較例１〜２
（ブレーカ−プレートの製造）
表１の原料粉末を湿式合成法によりえた。該原料粉末を
ラバープレス法によって成形し、表中の温度で焼成して
、セラミックスをえた。また、一部のものは、さらにＩ
ＩＩＰ処理した。このセラミックスを研削、研摩、穴加
工し、所定の寸法に仕上げ、鋼に焼バメして、樹脂との
接触部をセラミックスとしたブレーカ−プレートをつく
った。また、比較のための鋼のみ（従来品）で作ったブ
レーカ−プレートについてもテストした。Examples 1 to 3, Comparative Examples 1 to 2 (Manufacture of breaker plate) The raw material powders shown in Table 1 were obtained by a wet synthesis method. The raw material powder was molded by a rubber press method and fired at the temperature shown in the table to obtain ceramics. In addition, some of them are further I
IIP treated. This ceramic was ground, polished, and drilled to a predetermined size, and then shrink-fitted to steel to create a breaker plate in which the contact portion with the resin was made of ceramic. For comparison, a breaker plate made only of steel (conventional product) was also tested.
（単軸押出機テスト）
実施例１〜３、比較例１．２では、シートの成形を行っ
た。(Single screw extruder test) In Examples 1 to 3 and Comparative Examples 1 and 2, sheets were molded.
各成形終了後は、スクリューおよびダイスを分解して清
掃し、ブレーカ−プレートを交換した後、次の例の成形
に移った。After each molding was completed, the screw and die were disassembled and cleaned, the breaker plate was replaced, and then the molding of the next example was started.
成形および測定条件は、以下のとおりである。The molding and measurement conditions are as follows.
（１）樹脂 東洋曹達工業（株）製塩化ビニル樹脂リュ
ーロン７００Ｄ Ｐ■１０００（２）単軸押出成形機
ａ、押出機 日本製鋼所製Ｐ−４０型
スクリュー径４０■Ｌ／Ｄ２２
圧縮比（Ｃ／Ｒ）３．０
ｂ、ダイス クロスヘッドタイプ
幅４０＋ａｉａ、リップ間隙０．８ｍｍ（３）成形条件
ａ、押出温度
シリンダー 〇−Ｉ Ｃ−２０−３１５０℃
１６５℃ １７５℃
ダイス Ｄ−Ｉ Ｄ−２Ｄ−３１７２℃
１８５℃ ２００℃
ｂ、スクリュー回転 ３２ｒｐ■
Ｃ，シートサイズ
４０■（幅） ｘ Ｏ，８＊ｍ （肉厚）（４）ブレー
カ−プレートの形状
外径７２１１％口径４０＋＋ｖ
穴総面積３００ ｍ
（５）コンパウンド
Ｃａ−Ｚｎ系安定剤（東京ファインケミカル社製ＴＭＦ
３［１２） ３重量部
可塑剤（ＤＯＰ） １５重量部
フィラー（ＣａＣ０＊） １０重量部上記添加物を樹
脂１００重量部に対し添加し、ヘンシェルミキサーで混
合した混合物を単軸押出機シート成形に供した。(1) Resin Vinyl chloride resin Ryuron 700D P1000 manufactured by Toyo Soda Kogyo Co., Ltd. (2) Single screw extrusion molding machine a, extruder P-40 type manufactured by Japan Steel Works, screw diameter 40 L/D22 Compression ratio (C /R) 3.0 b, die cross head type width 40+aia, lip gap 0.8 mm (3) Molding conditions a, extrusion temperature cylinder 〇-I C-20-3150℃
165℃ 175℃ Dice D-I D-2D-3172℃
185℃ 200℃ b, Screw rotation 32rp■ C, Sheet size 40■ (width) ) Compound Ca-Zn stabilizer (TMF manufactured by Tokyo Fine Chemical Co., Ltd.
3[12] 3 parts by weight Plasticizer (DOP) 15 parts by weight Filler (CaC0*) 10 parts by weight The above additives were added to 100 parts by weight of resin, and the mixture mixed in a Henschel mixer was molded into a sheet using a single-screw extruder. provided.
（６）測定
連続成形時間ニブレートアウト、汚れによりブレーカ−
プレートの穴がつまり連続成形が不可能となるまでの時
間。（スクリューモーター負荷の増大による。）
プレートアウト、汚れ量：ブレーカ−プレートの穴がつ
まり連続成形が不可能となった時点のプレートアウト、
汚れ量。ただし１５時間経過してもスクリューモータ負
荷に変化があられれない場合は、１５時間経過時点のプ
レートアウト、汚れの量。(6) Measuring continuous molding time due to nibrate out and dirt.
The time it takes until the hole in the plate becomes clogged and continuous molding becomes impossible. (Due to increased screw motor load.) Plate out, amount of contamination: Plate out when the hole in the breaker plate is clogged and continuous molding becomes impossible.
Amount of dirt. However, if there is no change in the screw motor load after 15 hours, check the amount of plate out and dirt after 15 hours.
以上のテストの結果を表１に示す。実施例１〜３では１
５ｈｒ経過しても、スクリューモータ負荷に変化がなく
、比較例１および２ではプレートアウト、汚れの発生が
多く、前者では１０ｈｒで、後者では８ｈｒでスクリュ
ーモータ負荷が増大し、運転をストップした。Table 1 shows the results of the above tests. 1 in Examples 1 to 3
Even after 5 hours had elapsed, there was no change in the screw motor load, and in Comparative Examples 1 and 2, plate out and staining occurred frequently, and the screw motor load increased at 10 hr in the former and 8 hr in the latter, and the operation was stopped.
表１Table 1
Claims (2)
らなるプラスチック成形機用ブレーカープレート。(1) A breaker plate for a plastic molding machine made of ceramics containing 40 wt% or more of zirconia.
求の範囲第（１）項記載のプラスチック成形機用ブレー
カープレート材料。(2) The breaker plate material for a plastic molding machine according to claim (1), wherein the zirconia is partially stabilized zirconia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61108535A JPS62264928A (en) | 1986-05-14 | 1986-05-14 | Breaker plate material for plastic molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61108535A JPS62264928A (en) | 1986-05-14 | 1986-05-14 | Breaker plate material for plastic molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62264928A true JPS62264928A (en) | 1987-11-17 |
Family
ID=14487271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61108535A Pending JPS62264928A (en) | 1986-05-14 | 1986-05-14 | Breaker plate material for plastic molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62264928A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01159229A (en) * | 1987-12-16 | 1989-06-22 | Sumitomo Electric Ind Ltd | Breaker plate for resin extrusion |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4927426A (en) * | 1972-07-07 | 1974-03-11 |
-
1986
- 1986-05-14 JP JP61108535A patent/JPS62264928A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4927426A (en) * | 1972-07-07 | 1974-03-11 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01159229A (en) * | 1987-12-16 | 1989-06-22 | Sumitomo Electric Ind Ltd | Breaker plate for resin extrusion |
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