JP2676549B2 - Cleaning agent for molding machines - Google Patents

Cleaning agent for molding machines

Info

Publication number
JP2676549B2
JP2676549B2 JP1128758A JP12875889A JP2676549B2 JP 2676549 B2 JP2676549 B2 JP 2676549B2 JP 1128758 A JP1128758 A JP 1128758A JP 12875889 A JP12875889 A JP 12875889A JP 2676549 B2 JP2676549 B2 JP 2676549B2
Authority
JP
Japan
Prior art keywords
resin
thermoplastic resin
cleaning agent
water
molding machine
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.)
Expired - Lifetime
Application number
JP1128758A
Other languages
Japanese (ja)
Other versions
JPH02308899A (en
Inventor
幹彦 伊藤
成道 村原
Original Assignee
旭化成工業株式会社
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Filing date
Publication date
Application filed by 旭化成工業株式会社 filed Critical 旭化成工業株式会社
Priority to JP1128758A priority Critical patent/JP2676549B2/en
Publication of JPH02308899A publication Critical patent/JPH02308899A/en
Application granted granted Critical
Publication of JP2676549B2 publication Critical patent/JP2676549B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3703Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3719Polyamides or polyimides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Detergent Compositions (AREA)

Description

【発明の詳細な説明】 [産業上の利用技術分野] 本発明は、熱可塑性樹脂用成形機による所定作業終了
時に、当該成形機内に残留する熱可塑性樹脂及びそれに
含まれる染顔料等の添加物を除去するための洗浄剤に関
する。
Description: TECHNICAL FIELD The present invention relates to a thermoplastic resin remaining in a molding machine for a thermoplastic resin at the end of a predetermined work, and additives such as dyes and pigments contained therein. It relates to a cleaning agent for removing.

[従来の技術] 一般に、熱可塑性樹脂の着色、混合、成形等を目的に
成形機(押出し・射出)が用いられるが、所定の作業終
了時に、当該樹脂そのものや樹脂中に含まれている染顔
料等の添加剤が成形機内に残留する。この残留物は、次
に行われる異種樹脂又は異色樹脂の成形時に成形品中に
混入し、製品外観不良の原因となる。
[Prior Art] Generally, a molding machine (extrusion / injection) is used for the purpose of coloring, mixing, molding, etc. of a thermoplastic resin, but at the end of a predetermined work, the resin itself or the dye contained in the resin is used. Additives such as pigments remain in the molding machine. This residue mixes in the molded product during the subsequent molding of a different resin or a resin of a different color and causes a defective appearance of the product.

従来、上記残留物を成形機内から除去するため、入力
により成形機の分解掃除をする方法、成形機を停止せず
にそのまま次に成形に供する樹脂を成形機内に充填し、
これにより残留物を少しづつ置換して行く方法及び市販
の洗浄剤を用いる方法が実施されている。
Conventionally, in order to remove the above-mentioned residue from the inside of the molding machine, a method of disassembling and cleaning the molding machine by inputting, filling the inside of the molding machine with the resin to be subjected to the next molding without stopping the molding machine,
As a result, a method of gradually replacing the residue and a method of using a commercially available detergent are implemented.

特に、上記市販の洗浄剤としては次のものが知られて
いる。
In particular, the following are known as the commercially available cleaning agents.

(1)超高分子アクリル樹脂に、発泡剤、カオリン及び
炭酸カルシウムを含有させたもの(半溶融タイプ)。
(1) A super-polymer acrylic resin containing a foaming agent, kaolin and calcium carbonate (semi-molten type).

(2)熱可塑性樹脂に界面活性剤を含有させたもの(完
全溶融タイプ)。
(2) A thermoplastic resin containing a surfactant (completely melted type).

(3)発泡剤入り金属石けん(ブレンドタイプ)。(3) Metal soap with a foaming agent (blend type).

[発明が解決しようとする課題] しかし、入力による分解掃除では、多数の人手と長時
間を要し、生産性低下の大きな要因となっている。ま
た、成形機の構造上簡単に分解出来ない箇所(例えばシ
リンダー内壁)に残留物が残る問題もある。
[Problems to be Solved by the Invention] However, disassembling and cleaning by input requires a large number of manpower and a long time, which is a major factor of productivity reduction. Further, there is also a problem that the residue remains on a portion that cannot be easily disassembled due to the structure of the molding machine (for example, the inner wall of the cylinder).

次に使用する成形材料で置換して行く方法では、成形
を目的とする樹脂は洗浄に適した設計になっていないた
め、洗浄効果が低く、多量の樹脂と長時間を要する。加
えて、例えばゴム熱劣化物等、残留物の種類によっては
除去出来ない場合がある。
In the method of substituting with the molding material to be used next, the resin for molding is not designed to be suitable for cleaning, so the cleaning effect is low, and a large amount of resin and a long time are required. In addition, it may not be able to be removed depending on the type of residue such as rubber heat deterioration product.

市販の洗浄剤を用いる方法は、いずれの洗浄剤も洗浄
剤として下記の如き致命的欠点を有しているため、一般
に普及していない。
The method using a commercially available detergent is not generally used, because each detergent has the following fatal defects as a detergent.

(1)半溶融タイプの洗浄剤は、それ自体が成形機内に
残留しやすく、次の成形材料に混入して異物トラブルを
発生させる。
(1) The semi-molten type cleaning agent itself tends to remain in the molding machine and mixes with the next molding material to cause foreign matter trouble.

(2)完全溶融タイプの洗浄剤は、洗浄効果が低い上
に、洗浄後透明樹脂に戻すのに長時間を要する。
(2) In addition to having a low cleaning effect, the complete-melt type cleaning agent requires a long time to restore the transparent resin after cleaning.

(3)ブレンドタイプの洗浄剤は、洗浄効果が低いうえ
に、成形材料への予備ブレンド作業が必要で、使用に手
間がかかる。
(3) The cleaning agent of the blend type has a low cleaning effect and requires a pre-blending operation to the molding material, which is troublesome to use.

[課題を解決するための手段] 本発明は、このような従来未解決の課題に着目して成
されたもので、熱可塑性樹脂用成形機内残留物の洗浄剤
として、含水させた熱可塑性樹脂が高い洗浄作用を有
し、洗浄時間と洗浄用樹脂を大幅に削減できることを本
発明者等が見出したことによって完成されたものであ
る。
[Means for Solving the Problems] The present invention has been made by paying attention to such an unsolved problem in the related art, and a hydrated thermoplastic resin is used as a cleaning agent for residues in a molding machine for thermoplastic resins. The present invention has been completed by the inventors of the present invention finding that it has a high cleaning action and can significantly reduce the cleaning time and the cleaning resin.

即ち、本発明は、メルトフローレイトが1〜10g/10分
(220℃・10kg)の熱可塑性樹脂に0.5〜25重量%の水分
を含有させた成形機用洗浄剤である。
That is, the present invention is a detergent for a molding machine in which a thermoplastic resin having a melt flow rate of 1 to 10 g / 10 minutes (220 ° C. · 10 kg) contains 0.5 to 25% by weight of water.

本発明に用いる熱可塑性樹脂としては、メルトフロー
レイトが1〜10g/10分(220℃,10kg)であることが必要
である。メルトフローレイトが1g/10分未満では、標準
的な成形条件、例えば成形温度を200〜280℃で使用でき
なく、また10g/10分を越えると十分な洗浄効果が得にく
くなる。
The thermoplastic resin used in the present invention must have a melt flow rate of 1 to 10 g / 10 minutes (220 ° C, 10 kg). If the melt flow rate is less than 1 g / 10 minutes, it cannot be used under standard molding conditions, for example, at a molding temperature of 200 to 280 ° C., and if it exceeds 10 g / 10 minutes, it becomes difficult to obtain a sufficient cleaning effect.

本発明で用いる熱可塑性樹脂としては、メルトフロー
レイトが上記範囲内のものであれば、射出成形や押出し
成形等に供される一般の熱可塑性樹脂を広く用いること
ができる。具体例としては、ポリエチレン、ポリプロピ
レン、ポリスチレン、AS樹脂、ABS樹脂、ポリメチルメ
タクリレート、ポリ塩化ビニル、ポリアミド系樹脂、ポ
リカーボネート、ポリブテン等を挙げることができる。
また、これらの熱可塑性樹脂は、単独で用いても二種以
上混合して用いてもよい。
As the thermoplastic resin used in the present invention, if the melt flow rate is within the above range, general thermoplastic resins used for injection molding, extrusion molding and the like can be widely used. Specific examples include polyethylene, polypropylene, polystyrene, AS resin, ABS resin, polymethylmethacrylate, polyvinyl chloride, polyamide resin, polycarbonate, polybutene and the like.
Further, these thermoplastic resins may be used alone or in combination of two or more kinds.

本発明では、上記のように、一般の熱可塑性樹脂を広
く用いることができるが、熱可塑性樹脂の種類として
は、洗浄作業後の成形に供する熱可塑性樹脂と同一組成
のものが好ましい、また、残留樹脂の種類を問わず高い
洗浄効果が得られ、各種の熱可塑性樹脂を単一の洗浄剤
で洗浄できる観点からは、スチレン・アクリロニトリル
共重合体が好ましい。
In the present invention, as described above, general thermoplastic resins can be widely used, but as the type of thermoplastic resin, those having the same composition as the thermoplastic resin used for molding after the washing operation are preferable, A styrene-acrylonitrile copolymer is preferable from the viewpoint that a high cleaning effect can be obtained regardless of the type of residual resin and various thermoplastic resins can be cleaned with a single cleaning agent.

本発明において用いる水は、当該熱可塑性樹脂に、0.
5〜25重量%含有させることが必要である。含水量が0.5
重量%未満では洗浄効果が劣り、25重量%以上含有させ
ることは技術的に困難になるばかりか、成形膜への投入
時の衝撃等で水が流入しやすくなる。
Water used in the present invention, the thermoplastic resin, 0.
It is necessary to contain 5 to 25% by weight. Water content is 0.5
If it is less than 5% by weight, the cleaning effect will be poor, and it will be technically difficult to contain 25% by weight or more, and water will easily flow in due to an impact at the time of introduction into the molding film.

本発明において、熱可塑性樹脂に水分を含有させると
は、常温において簡単に外部に流出しない状態で、熱可
塑性樹脂に水分を持たせることをいい、例えば、熱可塑
性樹脂自体にその吸湿性を利用して水分を担持させた
り、粒状の熱可塑性樹脂内に中空部を形成してそこに水
を封入しておくこと等が挙げられる。
In the present invention, to contain water in the thermoplastic resin means to give water to the thermoplastic resin in a state where it does not easily flow out to the outside at room temperature. For example, the thermoplastic resin itself uses its hygroscopic property. And the like to support water, or to form a hollow portion in a granular thermoplastic resin and enclose water therein.

従って、本発明においては、例えば、粒状又は粒状の
熱可塑性樹脂と水の単なる混合物や、熱可塑性樹脂と吸
水性又は結晶水を有する他の物質との混合物等は除外さ
れる、前者の場合、水が熱可塑性樹脂と遊離又は熱可塑
性樹脂の粉体又は粒体の表面に付着している状態にある
ので、その投入時に成形機のホッパーやホッパー直下の
内壁に水が付着し、この水が次に使用する樹脂を濡らし
て成形不良の原因となる。また、後者の場合、吸水性又
は結晶水を有する他の物質が成形機内に残留しやすく、
やはり次の成形を阻害する。
Therefore, in the present invention, for example, a mere mixture of a granular or granular thermoplastic resin and water, a mixture of the thermoplastic resin and another substance having water absorption or crystal water is excluded, in the case of the former, Since water is in a state of adhering to the surface of powder or granules of thermoplastic resin and free or thermoplastic resin, water is attached to the hopper of the molding machine or the inner wall just below the hopper at the time of charging, and this water is Next, the resin to be used is wetted, which causes defective molding. In the latter case, other substances having water absorption or water of crystallization tend to remain in the molding machine,
After all, it hinders the next molding.

熱可塑性樹脂に水分を含有させる方法を更に具体的に
説明すると、例えば次のようにして行うことができる。
The method of containing water in the thermoplastic resin will be described more specifically. For example, the method can be performed as follows.

(1)吸湿性を有する熱可塑性樹脂に、自然吸水(空気
中からの吸湿)やブレンダー等による水との接触等によ
って水分を吸着させることができる。
(1) Moisture can be adsorbed to a thermoplastic resin having a hygroscopic property by natural water absorption (moisture absorption from the air), contact with water by a blender, or the like.

吸湿性を有する熱可塑性樹脂としては、一般に親水性
基を有する熱可塑性樹脂、例えばスチレン−アクリロニ
トリル共重合体等が用いられる。スチレン・アクリロニ
トリル共重合体を用いる場合、水分を含有させやすくす
るために、アクリロニトリルの含有量が25〜50重量%、
特に30〜50重量%であることが好ましい。
As the hygroscopic thermoplastic resin, a thermoplastic resin having a hydrophilic group, such as a styrene-acrylonitrile copolymer, is generally used. When using a styrene-acrylonitrile copolymer, the content of acrylonitrile is 25 to 50% by weight, in order to easily contain water,
It is particularly preferably 30 to 50% by weight.

(2)次のようにして、押出機を用いて粒状熱可塑性樹
脂中に水を封入することができる。
(2) Water can be enclosed in the granular thermoplastic resin by using an extruder as follows.

まず、ベント口を塞いだ二軸押出機を用いて熱可塑性
樹脂を押出ながら、注入ノズルから水を圧入する。する
と水は、樹脂と相容性が悪い上にシリンダー内で加熱さ
れるため、ノズル部で気化し、これによって発泡状の樹
脂が吐出される。
First, while a thermoplastic resin is being extruded using a twin-screw extruder having a vent port closed, water is press-fitted from an injection nozzle. Then, since the water is incompatible with the resin and is heated in the cylinder, the water is vaporized at the nozzle portion, whereby the foamed resin is discharged.

この吐出物を水で急冷し、粒状に仕上げると、水の閉
じ込められた多孔質物の熱可塑性樹脂を得ることができ
る。
If this discharge product is quenched with water and finished into particles, a porous thermoplastic resin in which water is trapped can be obtained.

粒状にするためには、アンダーウォーターカッターを
用いるか、ノズルからの吐出物を直接水槽に受けて急冷
後粉砕する方法がある。
To make the particles granular, there is a method of using an underwater cutter or a method of directly receiving a discharge from a nozzle in a water tank and rapidly cooling and crushing.

(3)次のようにして、熱可塑性樹脂溶液を用いて、カ
プセル状に水を封入した熱可塑性樹脂を得ることができ
る。即ち、熱可塑性樹脂溶液中に氷片を投入し、撹拌後
取出して真空乾燥することにより、熱可塑性樹脂による
水のカプセル状物を得ることができる。投入する氷片と
しては、0.5〜5mm程度の径のもので、熱可塑性樹脂溶液
に投入されることで瞬時に溶解しない範囲でできるだけ
径の小さいものが好ましい。具体的には2mm以下の径で
あることが好ましい。
(3) As described below, a thermoplastic resin solution can be used to obtain a thermoplastic resin in which water is encapsulated in a capsule shape. That is, by putting ice pieces in the thermoplastic resin solution, taking out after stirring, and vacuum drying, a water-capsule product of the thermoplastic resin can be obtained. As the ice pieces to be put, those having a diameter of about 0.5 to 5 mm, and those having a diameter as small as possible within the range where they are not melted instantly when they are put into the thermoplastic resin solution are preferable. Specifically, the diameter is preferably 2 mm or less.

上述のように、本発明においては、吸湿性を利用して
水分を担持させる場合と、物理的に水を封じ込める場合
とがあるが、熱可塑性樹脂の水分含有量を調整しやすい
点から、後者の方が好ましい。
As described above, in the present invention, there are cases of supporting moisture by utilizing hygroscopicity and cases of physically confining water, but from the viewpoint of easily adjusting the moisture content of the thermoplastic resin, the latter Is preferred.

本洗浄剤は、これを成形機に投入して、成形機を通常
通り作動させることで洗浄効果を奏するもので、本洗浄
剤の含水量が0.5〜5重量%の場合にはそれ単独で投入
してもよいが、特に含水量が5重量%を越える本洗浄剤
は、熱可塑性樹脂全体の含水量が0.5〜5重量%となる
よう、他の熱可塑性樹脂と混合して使用されるものであ
る。全体の含水量が0.5重量%未満では十分な洗浄効果
が得にくく、5重量%を越えると洗浄操作が機械的に困
難となる。
This cleaning agent has a cleaning effect by putting it into a molding machine and operating the molding machine normally. When the water content of this cleaning agent is 0.5 to 5% by weight, it is charged as it is. This detergent, which has a water content of more than 5% by weight, may be mixed with another thermoplastic resin so that the water content of the entire thermoplastic resin is 0.5 to 5% by weight. Is. If the total water content is less than 0.5% by weight, it is difficult to obtain a sufficient cleaning effect, and if it exceeds 5% by weight, the cleaning operation becomes mechanically difficult.

上記本洗浄剤と混合して用いる他の熱可塑性樹脂と
は、水分を含有させていない熱可塑性樹脂のことで、通
常の成形条件で高い洗浄効果が得られるように、メルト
フローレイトが1〜10g/10分(220℃,10kg)で、特に次
の成形に用いる熱可塑性樹脂と同一組成のものが好まし
い。
The other thermoplastic resin used by mixing with the present cleaning agent is a thermoplastic resin that does not contain water, and has a melt flow rate of 1 to 1 so that a high cleaning effect can be obtained under normal molding conditions. It is preferably 10 g / 10 minutes (220 ° C., 10 kg), and particularly the same composition as the thermoplastic resin used for the next molding.

また、本洗浄剤の洗浄効果は、ある程度含有水分量に
比例し、熱可塑性樹脂のメルトフローレイトに反比例す
る関係を有する。従って、含水量の小さいものほど、本
洗浄剤に用いる熱可塑性樹脂並びに本洗浄剤と混合する
他の熱可塑性樹脂をメルトフローレイトが小さいものと
し、逆にこれらの熱可塑性樹脂のメルノフローレイトが
大きいときには含水量を大きくすることが好ましい。特
に、吸湿性を利用して水分を担持させた本洗浄剤につい
ては、通常2重量%を越える水分を担持させておくのは
困難であるので、これらの熱可塑性樹脂として、メルト
フローレイトが1〜4g/10分(220℃・10分)のものを用
いることが好ましい。
In addition, the cleaning effect of the present cleaning agent has a relationship that it is proportional to the water content to some extent and is inversely proportional to the melt flow rate of the thermoplastic resin. Therefore, the smaller the water content, the smaller the melt flow rate of the thermoplastic resin used in the present cleaning agent and the other thermoplastic resin mixed with the present cleaning agent, and conversely, the merno flow rate of these thermoplastic resins. When is large, it is preferable to increase the water content. In particular, it is difficult to carry a water content of more than 2% by weight with respect to the present cleaning agent that has carried water content by utilizing its hygroscopicity. Therefore, these thermoplastic resins have a melt flow rate of 1% or less. It is preferable to use the one of about 4 g / 10 minutes (220 ° C. for 10 minutes).

本洗浄剤は、成形機への投入や、上記他の熱可塑性樹
脂との混合を容易にするため、一般の成形材料と同程度
の大きさの粒状としておくことが好ましい。また、本洗
浄剤を射出成形機、押出し成形機に対して特に有益であ
るが、これらと同様に熱可塑性樹脂を加熱溶融させて混
練するシリンダー部を有する装置であれば広く適用する
ことができる。
The present cleaning agent is preferably in the form of granules having the same size as a general molding material in order to facilitate the introduction into the molding machine and the mixing with the other thermoplastic resin. Further, although the present cleaning agent is particularly useful for an injection molding machine and an extrusion molding machine, it can be widely applied as long as it is an apparatus having a cylinder part for melting and kneading a thermoplastic resin by heating and melting like the above. .

本洗浄剤をベント付成形機に使用する場合は、全体の
5〜10重量%をベント口から添加すると好ましい結果が
得られる。
When this cleaning agent is used in a molding machine with a vent, a preferable result is obtained by adding 5 to 10% by weight of the whole from the vent port.

本洗浄剤を用いる場合の成形機の運転条件は、シリン
ダー内圧が上昇するような条件に設定すると、効果がよ
り顕著になるので好ましい。即ち、シリンダー温度を吐
出可能な範囲で下げる、背圧を掛ける、高速で射出させ
る、等の操作を行うことが好ましい。
When the present cleaning agent is used, the operating conditions of the molding machine are preferably set so that the internal pressure of the cylinder rises, because the effect becomes more remarkable. That is, it is preferable to perform operations such as lowering the cylinder temperature within a dischargeable range, applying back pressure, and injecting at high speed.

[作用] 熱可塑性樹脂は、それ自身が成形機内を移動するに伴
って、成形機内の残留物を付着位置から引き剥して、こ
れを搬出する役割をなす。
[Operation] As the thermoplastic resin moves inside the molding machine, the thermoplastic resin peels off the residue in the molding machine from the adhering position and carries it out.

一方、含有されている水の働きを必ずしも明らかでは
ないが、成形機内で加熱されて蒸気となり、成形機内面
と付着残留物との間にこの蒸気が入り込んで、付着残留
物の剥離を促していると考えられる。また、蒸気との接
触によって付着残留物がある程度冷却硬化することも、
その剥離を促すことになっていると考えられる。
On the other hand, although the function of the contained water is not always clear, it is heated in the molding machine to become steam, and this steam enters between the inner surface of the molding machine and the adhesion residue, promoting the peeling of the adhesion residue. It is believed that In addition, contact residue with steam may cool and cure the adhered residue to some extent.
It is thought that the peeling is to be promoted.

[実施例] 次に本発明を実施例及び比較例により説明する。尚、
実施例及び比較例に使用した成形機、成形条件及び測定
条件は以下の通りである。
[Examples] Next, the present invention will be described with reference to Examples and Comparative Examples. still,
The molding machine, molding conditions and measurement conditions used in the examples and comparative examples are as follows.

原形機:射出成形機(インラインスクリュー型)東芝IS
125(型締力125トン・容量10 OZ) 成形温度:実施例 比較例毎に表−1に示す。
Prototype machine: Injection molding machine (inline screw type) Toshiba IS
125 (mold clamping force 125 tons, capacity 10 OZ) Molding temperature: Example Table 1 shows each comparative example.

メルトフローレイト:JIS−K7210。Melt flow rate: JIS-K7210.

アクリロニトリル含有量(AN%):赤外線分光光度計。Acrylonitrile content (AN%): Infrared spectrophotometer.

水分含有量:次式により求めた。Moisture content: Obtained by the following formula.

W1−W4/W1×100% (吸湿によるもの) W2−W3/W1×100% (封入によるもの) W1:サンプルの重量 W2:80℃、2時間熱風乾燥後の重量 W3:W2測定後のサンプルを粉砕し80℃、2時間熱風乾燥
後の重量 W4:サンプルを粉砕し80℃、2時間熱風乾燥後の重量 実施例1 AS樹脂黒着色品を成形機内に充填後、完全に排出して
成形機内を空にした。次に、表−1に示す本発明の洗浄
剤(AS樹脂ベース)を2kg投入し、これを射出操作によ
り排出し終了までの時間と、洗浄剤押出後にABS樹脂無
色品を成形して、前述の黒着色品の残留物の影響(黒色
の汚班)の無いことが確認されるまでの時間と使用樹脂
量を測定した。その結果を表−1に示す。
W 1 −W 4 / W 1 × 100% (due to moisture absorption) W 2 −W 3 / W 1 × 100% (due to encapsulation) W 1 : Sample weight W 2 : 80 ° C for 2 hours after hot air drying weight W 3: W 2 crushed 80 ° C. the sample after the measurement, 2 hours air drying after weight W 4: grinding the sample 80 ° C., forming a 2-hour hot-air drying after weight example 1 AS resin black colored product After filling the inside of the machine, it was completely discharged to empty the inside of the molding machine. Next, 2 kg of the cleaning agent (AS resin base) of the present invention shown in Table 1 was charged, and this was discharged by an injection operation until the end, and the ABS resin colorless product was molded after the cleaning agent was extruded. The time until it was confirmed that there was no influence of the residue of the black colored product (black stain) and the amount of resin used were measured. Table 1 shows the results.

比較例1 実施例1と同様の方法でABS黒着色品を成形機内に充
填後完全に排出し、成形機内を空にした後、ABS無色品
を成形機に投入し、成形により前述の黒着色品の影響
(黒色の汚班)の無くなるまでの必要樹脂量と所要時間
を測定した。その結果を表−1に示す。
Comparative Example 1 In the same manner as in Example 1, the ABS black colored product was filled into the molding machine and then completely discharged, and after emptying the molding machine, the ABS colorless product was put into the molding machine and molded to obtain the above black coloring. The required amount of resin and the required time until the influence of the product (black stain) disappeared were measured. Table 1 shows the results.

実施例2 実施例1と同様の方法でAS樹脂黒着色品の洗浄を試み
た。その結果を表−1に示す。
Example 2 An attempt was made to wash an AS resin black colored product in the same manner as in Example 1. Table 1 shows the results.

比較例2 比較例1と同様の方法でAS樹脂黒着色品を搬出して空
にした後、次に成形するAS樹脂無色品で洗浄し、AB樹脂
黒着色品の影響の無くなるまでの必要樹脂量と所要時間
を測定した。その結果を表−1に示す。
Comparative Example 2 The same procedure as in Comparative Example 1 was carried out to empty the AS resin black-colored product and then emptied, followed by washing with the AS resin colorless product, which is required until the influence of the AB resin black-colored product disappears. The quantity and duration were measured. Table 1 shows the results.

実施例3 含水量 1.7%の洗浄剤とした以外は実施例2と全く
同一の方法でテストした。その結果を表−1に示す。
Example 3 A test was conducted in the same manner as in Example 2 except that a detergent having a water content of 1.7% was used. Table 1 shows the results.

比較例3 実施例3で用いた洗浄剤に代えて、含水量ゼロ%の洗
浄剤を用いた以外は実施例3と全く同一の方法でテスト
した。その結果を表−1に示す。
Comparative Example 3 A test was performed in the same manner as in Example 3 except that the cleaning agent used in Example 3 was replaced with a cleaning agent having a water content of 0%. Table 1 shows the results.

実施例4 ABS樹脂の後にAS樹脂を成形する場合を想定し、ABS樹
脂の洗浄を試みた。即ち、ABS樹脂無色品を成形機内に
充填後完全に排出し成形機内を空にした。次に、表−1
に示す本発明の洗浄剤(AS樹脂ベース)を1kg投入し、
射出操作により排出し終了までの時間と、洗浄剤押出後
にAS樹脂無色品を成形して、前述のABS樹脂の影響(白
濁)の無いことが確認されるまでの時間と使用樹脂量を
測定した。その結果を表−1に示す。
Example 4 Cleaning of the ABS resin was attempted on the assumption that the AS resin is molded after the ABS resin. That is, a colorless ABS resin product was filled into the molding machine and then completely discharged to empty the molding machine. Next, Table-1
1kg of the cleaning agent (AS resin base) of the present invention shown in
The time until discharge by the injection operation and the end, the time until it was confirmed that there was no influence (white turbidity) of the ABS resin described above after molding the AS resin colorless product after cleaning agent was measured, and the amount of resin used was measured. . Table 1 shows the results.

比較例4 洗浄剤を用いながら以外は実施例4と同様、即ちABS
樹脂無色品を成形機内に充填後完全に排出し成形機内を
空にし、ついで、AS樹脂無色品で洗浄し、ABS樹脂の影
響の無くなるまでの必要樹脂量と所要時間を測定した。
その結果を表−1に示す。
Comparative Example 4 Same as Example 4, except using the detergent, ie ABS
After the colorless resin product was filled in the molding machine, it was completely discharged, the inside of the molding machine was emptied, and then the product was washed with the AS resin colorless product, and the required amount of resin and the required time until the influence of the ABS resin disappeared were measured.
Table 1 shows the results.

実施例5 実施例1と同様の方法で、ポリプロピレン(PP)黒着
色品の洗浄を表−1に示す本発明の洗浄剤(PPベース)
を用いて実施した。その結果を表−1に示す。
Example 5 In the same manner as in Example 1, the washing of the polypropylene (PP) black-colored product is shown in Table 1. The detergent of the present invention (PP base).
Was carried out using Table 1 shows the results.

比較例5 実施例5で用いた洗浄剤に代えて、一般のPPを用いる
以外は実施例5と全く同一の方法でテストした。その結
果を表−1に示す。
Comparative Example 5 A test was performed in the same manner as in Example 5 except that a general PP was used instead of the cleaning agent used in Example 5. Table 1 shows the results.

実施例6 実施例1と同様の方法で、ポリメチルメタクリレート
(PMMA)赤着色品の洗浄を表−1に示す本発明の洗浄剤
(PMMAベース)を用いて実施した。その結果を表−1に
示す。
Example 6 A polymethylmethacrylate (PMMA) red-colored product was washed in the same manner as in Example 1 using the detergent of the present invention (PMMA base) shown in Table 1. Table 1 shows the results.

比較例6 実施例6で用いた洗浄剤に代えて、一般のPMMAを用い
る以外は実施例6と全く同一の方法でテストした。その
結果を表−1に示す。
Comparative Example 6 A test was performed in the same manner as in Example 6 except that general PMMA was used instead of the cleaning agent used in Example 6. Table 1 shows the results.

実施例7 実施例1と同様の方法で、ポリスチレン黒着色品の洗
浄を本発明品(含水分20%品)を一般ポリスチレン(メ
ルトフローレイト25g/10分)に15%混和したものを用い
て実施した。その結果を表−1に示す。
Example 7 In the same manner as in Example 1, the polystyrene black-colored product was washed by using 15% of the product of the present invention (20% moisture content) mixed with general polystyrene (melt flow rate 25 g / 10 minutes). Carried out. Table 1 shows the results.

比較例7 実施例7で示した本発明品を用いずに、一般ポリスチ
レンだけで洗浄を実施した。その結果を表−1に示す。
Comparative Example 7 Without using the product of the present invention shown in Example 7, cleaning was carried out only with general polystyrene. Table 1 shows the results.

比較例8 洗浄剤として従来の半溶融タイプを用いた以外は実施
例1と同様にテストを行った、その結果、着色の影響
は、2kgの使用量で無くなったが、ABS無色品での成形
で、洗浄剤が異物として混入し、分解掃除を実施せざる
を得なかった。結果を表−1に示す。
Comparative Example 8 A test was performed in the same manner as in Example 1 except that a conventional semi-molten type was used as a cleaning agent. As a result, the influence of coloring disappeared at the usage amount of 2 kg, but molding was performed using a colorless ABS product. Then, the cleaning agent was mixed in as a foreign substance, and there was no choice but to disassemble and clean it. The results are shown in Table 1.

比較例9 洗浄剤として従来の完全溶融タイプを用いた以外は実
施例1と同様にテストを行った、その結果を表−1に示
す。
Comparative Example 9 A test was performed in the same manner as in Example 1 except that a conventional complete melting type was used as the cleaning agent, and the results are shown in Table 1.

比較例10 洗浄剤として従来のブレンドタイプを用いた以外は実
施例1と同様にテストした。その結果を表−1に示す。
Comparative Example 10 The test was performed in the same manner as in Example 1 except that the conventional blend type was used as the cleaning agent. Table 1 shows the results.

[発明の効果] 本発明は、以上説明の通りのものであり、次の効果を
奏するものである。
[Effects of the Invention] The present invention is as described above and has the following effects.

(1)少量にて高い洗浄効果が得られるので、残留物を
置き換えるために多量の成形材料を無駄に消費すること
を防止できる。
(1) Since a high cleaning effect can be obtained with a small amount, it is possible to prevent wasteful consumption of a large amount of molding material to replace the residue.

(2)通常の成形操作で洗浄ができ、特別な操作を必要
としないので、使用しやすい。
(2) It is easy to use because it can be washed by a normal molding operation and no special operation is required.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】メルトフローレイトが1〜10g/10分(220
℃・10kg)の熱可塑性樹脂に0.5〜25重量%の水分を含
有させたことを特徴とする成形機用洗浄剤。
1. A melt flow rate of 1 to 10 g / 10 minutes (220
A cleaning agent for a molding machine, characterized by containing 0.5 to 25% by weight of water in a thermoplastic resin (° C, 10 kg).
JP1128758A 1989-05-24 1989-05-24 Cleaning agent for molding machines Expired - Lifetime JP2676549B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1128758A JP2676549B2 (en) 1989-05-24 1989-05-24 Cleaning agent for molding machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1128758A JP2676549B2 (en) 1989-05-24 1989-05-24 Cleaning agent for molding machines

Publications (2)

Publication Number Publication Date
JPH02308899A JPH02308899A (en) 1990-12-21
JP2676549B2 true JP2676549B2 (en) 1997-11-17

Family

ID=14992739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1128758A Expired - Lifetime JP2676549B2 (en) 1989-05-24 1989-05-24 Cleaning agent for molding machines

Country Status (1)

Country Link
JP (1) JP2676549B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4012798C1 (en) * 1990-04-21 1991-08-14 Bayer Ag, 5090 Leverkusen, De
EP0548422B1 (en) * 1991-12-23 1997-07-16 MITSUI TOATSU CHEMICALS, Inc. Cleaning molding machines
DE69725387T2 (en) * 1996-06-18 2004-08-19 KURARAY CO., LTD, Kurashiki Cleaning agents and methods
JP4670110B2 (en) * 1999-11-16 2011-04-13 日東化工株式会社 Cleaning resin composition for plastic molding machines and extruders

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5720998B2 (en) * 1974-01-16 1982-05-04

Also Published As

Publication number Publication date
JPH02308899A (en) 1990-12-21

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