JPH0425600A - Cleaning agent for molding machine - Google Patents
Cleaning agent for molding machineInfo
- Publication number
- JPH0425600A JPH0425600A JP12901990A JP12901990A JPH0425600A JP H0425600 A JPH0425600 A JP H0425600A JP 12901990 A JP12901990 A JP 12901990A JP 12901990 A JP12901990 A JP 12901990A JP H0425600 A JPH0425600 A JP H0425600A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning agent
- styrene
- water
- molding
- acrylonitrile copolymer
- 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
- 239000012459 cleaning agent Substances 0.000 title claims abstract description 68
- 238000000465 moulding Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 claims abstract description 32
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000012778 molding material Substances 0.000 abstract description 38
- 239000000155 melt Substances 0.000 abstract description 13
- 229920005989 resin Polymers 0.000 abstract description 12
- 239000011347 resin Substances 0.000 abstract description 12
- 238000002347 injection Methods 0.000 abstract description 11
- 239000007924 injection Substances 0.000 abstract description 11
- 239000003365 glass fiber Substances 0.000 abstract description 10
- 229920001577 copolymer Polymers 0.000 abstract description 9
- 239000007822 coupling agent Substances 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 22
- 238000005259 measurement Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 14
- 229920005992 thermoplastic resin Polymers 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 6
- 239000004926 polymethyl methacrylate Substances 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 235000019359 magnesium stearate Nutrition 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000011086 high cleaning Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- -1 magnesium stearate Chemical class 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920000638 styrene acrylonitrile Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Detergent Compositions (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
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。更に詳しくは、スチレン−アクリロニトリル共重合
体に水分を含有させた洗浄剤に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention is directed to removing the thermoplastic resin remaining in the molding machine and additives such as dyes and pigments contained therein at the end of a predetermined operation by the molding machine for thermoplastic resin. Relating to cleaning agents for removal. More specifically, the present invention relates to a cleaning agent containing water in a styrene-acrylonitrile copolymer.
［従来の技術］
最も一般的な成形機の洗浄方法として１次に使用する成
形材料を成形機に入れて運転することで、成形機内に残
留している前回の成形材料を次に使用する成形材料で置
換してしまうことが行われている。[Prior art] The most common method for cleaning a molding machine is to put the molding material to be used first into the molding machine and run it, thereby removing the previous molding material remaining in the molding machine from the next molding. Replacement with other materials is being carried out.
しかしながら、成形材料は、本来洗浄を目的に設計され
ているものではないため、洗浄効率が悪く、多量の成形
材料が無駄に消費されると共に洗浄に長時間を要する問
題がある。However, since the molding material is not originally designed for cleaning, there are problems in that cleaning efficiency is poor, a large amount of molding material is wasted, and cleaning takes a long time.
そこで、消費樹脂量の節減と洗浄時間の短縮を図るべく
、洗浄を目的に設計された樹脂組成物が洗浄剤として開
発されている。Therefore, in order to reduce the amount of resin consumed and shorten cleaning time, resin compositions designed for cleaning purposes have been developed as cleaning agents.
従来、上記洗浄剤として、スチレン−アクリロニトリル
共重合体に水分を含有させたものが開発されており、こ
れには次のようなものが知られている。Conventionally, as the above-mentioned cleaning agent, a styrene-acrylonitrile copolymer containing water has been developed, and the following are known.
（１）メルトフローレイトか１〜４ｇ／１０分（２２０
℃０１０ｋｇ）で、アクリロニトリル含有量が２５〜５
０重量％であるスチレン−アクリロニトリル共重合体に
水分を０．５〜２重量％含有させたもの（特開平１−１
６７３５３号公報）。(1) Melt flow rate 1 to 4 g/10 minutes (220
℃010kg), the acrylonitrile content is 25-5
A styrene-acrylonitrile copolymer containing 0.5 to 2% by weight of water (Unexamined Japanese Patent Publication No. 1-1-1)
67353).
（２）メルトフローレイトが１〜３０ｇ／分（２２０℃
−１０ｋｇ）で、アクリロニトリル含有量が２５〜５０
重量％であるヌチレンーアクリロニトリル共重合体に水
分を０６５〜２重量％含有させ、更にガラス繊維を加え
たもの（＃開平１−１８７３５３号公報）。(2) Melt flow rate is 1 to 30 g/min (220℃
-10kg) with an acrylonitrile content of 25 to 50
Nutylene-acrylonitrile copolymer containing 0.65 to 2% by weight of water and glass fiber added (#KOKAI Publication No. 1-187353).
［発明が解決しようとする課題］
ところで、上記洗浄剤を用いて洗浄を行った場合でも、
成形機内に残留する洗浄剤を排出するため、次に用いる
成形材料による置換を行う必要がある。[Problem to be solved by the invention] By the way, even when cleaning is performed using the above cleaning agent,
In order to discharge the cleaning agent remaining in the molding machine, it is necessary to replace it with the molding material to be used next.
従って、少量の洗浄剤による短時間の運転によって前回
の成形材料が排出できると共に、次に使用する成形材料
による洗浄剤の排出に際しても、少量の成形材料による
短時間の運転で済むことが理想である。Therefore, it would be ideal if the previous molding material could be discharged with a short operation using a small amount of cleaning agent, and when the cleaning agent used next time can be discharged, only a short operation using a small amount of molding material would be sufficient. be.
従来の洗浄剤は、少量洗浄剤による短時間の運転で前回
の成形材料の排出ができ、また洗浄剤自体の排出に際し
ても比較的少量の成形材料によるかつ短時間の運転で排
出できるものではある。しかし、更に洗浄剤の実用性を
高めるには、前回の成形材料の排出を更に少量の洗浄剤
による短時間で行えるようにすると共に、洗浄剤の排出
をより少量の成形材料による短時間の運転で行えるよう
にすることが望まれる。With conventional cleaning agents, the previous molding material can be discharged in a short period of time using a small amount of cleaning agent, and even when the cleaning agent itself is being discharged, it can be discharged using a relatively small amount of molding material and in a short period of operation. . However, in order to further improve the practicality of cleaning agents, it is possible to discharge the previous molding material in a shorter time using an even smaller amount of cleaning agent, and to discharge the cleaning agent in a shorter time using a smaller amount of molding material. It is desirable to be able to do so.
本発明は、成形機内の洗浄に際し、洗浄剤と成形材料の
消費級を従来より更に節減すると共に、洗浄に要する時
間を更に短縮することをその解決すべＳｉ！！題とする
ものである。The present invention aims to further reduce the amount of cleaning agent and molding material consumed when cleaning the inside of a molding machine, as well as further shorten the time required for cleaning.Si! ! This is the subject.
［課題を解決するための手段］
上記課題を解決するために本発明において講じられた手
段を説明すると、本発明では、メルトフローレイトが０
．５〜１０ｇ／分（２２０℃・１０ｋｇ）で、アクリロ
ニトリル含有量が５〜２４重量％であるスチレン−アク
リロニトリル共重合体に０．２〜２５重量％の水分を含
有させるという手段を講じているものである。[Means for Solving the Problems] To explain the means taken in the present invention to solve the above problems, in the present invention, the melt flow rate is 0.
．． 5 to 10 g/min (220°C/10 kg), and measures are taken to incorporate 0.2 to 25 weight % of water into a styrene-acrylonitrile copolymer with an acrylonitrile content of 5 to 24 weight %. It is.
本発明に用いるスチレン−アクリロニトリル共重合体と
しては、メルトフローレイトが０．５〜Ｌｏｇ７１０分
（２２０℃・１０ｋｇ）であることが必要である。メル
トフローレイトが０．５ｇ／１０分未満では、標準的な
成形条件１例えば成形温度２２０〜２８０℃では良好な
洗浄効果を奏する状態での使用とはならなくなり、使用
に際して特別な条件を設定する手間が必要となる。また
、メルトフローレイトがｌ Ｏｇ ７１０分を越えると
洗浄効果が低下する。The styrene-acrylonitrile copolymer used in the present invention needs to have a melt flow rate of 0.5 to Log710 minutes (220° C., 10 kg). If the melt flow rate is less than 0.5 g/10 minutes, it will not be possible to use the product under standard molding conditions 1, for example, at a molding temperature of 220 to 280°C, with a good cleaning effect, and special conditions must be set for use. It takes time and effort. Furthermore, if the melt flow rate exceeds 1 Og 710 minutes, the cleaning effect will decrease.
上記スチレン−アクリロニトリル共重合体は、アクリル
ニトリル含有量が５〜２２重量％であることが必要であ
る。アクリロニトリル含有量が５重量％未満では洗浄力
が低下する。また、２５重量％以上では洗浄剤が成形機
内に残留しやすく、洗浄後の洗浄剤の排出に使用する成
形材料の量と、それに要する時間が増大する。The styrene-acrylonitrile copolymer needs to have an acrylonitrile content of 5 to 22% by weight. If the acrylonitrile content is less than 5% by weight, the detergency will decrease. Further, if the amount is 25% by weight or more, the cleaning agent tends to remain in the molding machine, increasing the amount of molding material used for discharging the cleaning agent after cleaning, and the time required for discharging the cleaning agent.
本発明において用いられる水は、スチレン−アクリロこ
トリル共重合体に、０．２〜２５重量％含有されている
ものである。含水量が０．２重量％未満では洗浄効果が
劣り、また２５重量％を越えて含有させることは技術的
に困難になるばかりか、成形機への投入時の衝撃等で水
が流出しやすくなる。The water used in the present invention is contained in the styrene-acrylocotolyl copolymer in an amount of 0.2 to 25% by weight. If the water content is less than 0.2% by weight, the cleaning effect will be poor, and if the water content exceeds 25% by weight, it will not only be technically difficult, but also water will easily flow out due to impact when feeding into the molding machine. Become.
本発明において、スチレン−アクリロニトリル共重合体
に水分を含有させるとは、常温において簡単に外部に流
出しない状態でスチレン−アクリロニトリル共重合体に
水分をもたせることをいい、例えば、スチレン−アクリ
ロニトリル共重合体自体にその吸湿性を利用して水分を
担持させたり、粒状のスチレン−アクリロニトリル共重
合体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, adding water to the styrene-acrylonitrile copolymer means adding water to the styrene-acrylonitrile copolymer without easily leaking out at room temperature. Examples include making the polymer itself support water by utilizing its hygroscopicity, or forming a hollow part in the granular styrene-acrylonitrile copolymer and sealing water therein.
従って、本発明においては、例えば１粒状又は粉状のス
チレン−アクリロニトリル共重合体と水の単なる混合物
は除かれる。この場合、水がスチレン−アクリロニトリ
ル共重合体と遊離又はスチレン−アクリロニトリル共重
合体の粒体又は粉体の表面に付着している状態にあるの
で、その成形機への投入時に、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成
形材料を濡らして成形不良の原因となる。Therefore, in the present invention, for example, a simple mixture of a styrene-acrylonitrile copolymer and water in the form of a single particle or powder is excluded. In this case, water is either free with the styrene-acrylonitrile copolymer or is attached to the surface of the styrene-acrylonitrile copolymer particles or powder, so when the water is introduced into the molding machine, the water is placed in the hopper of the molding machine. Water adheres to the inner wall directly below the hopper, and this water wets the molding material to be used next, causing molding defects.
スチレン−アクリロニトリル共重合体に水分を含有させ
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。To explain in more detail the method of adding water to the styrene-acrylonitrile copolymer, it can be carried out, for example, as follows.
（１）スチレン−アクリロニトリル共重合体自体が吸湿
性を有するので、自然吸水（空気中力Ａらの吸ｉ）や、
ブレンダー等による水との接触によって水分を吸着させ
ることができる。(1) Since the styrene-acrylonitrile copolymer itself has hygroscopic properties, natural water absorption (absorption of air force A, etc.),
Moisture can be adsorbed by contact with water using a blender or the like.
（２）高吸湿性の親木性基を有する熱可塑性樹脂、例え
ばポリメチルメタクリレートを上記の方法で吸湿させた
上で、ブレンダー等でスチレン−アクリロニトリル共重
合体に混合することで、スチレン−アクリロニトリル共
重合体に水分を含有させることができる。(2) A thermoplastic resin having a highly hygroscopic wood-philic group, such as polymethyl methacrylate, is made to absorb moisture by the above method, and then mixed with a styrene-acrylonitrile copolymer using a blender or the like to produce styrene-acrylonitrile. The copolymer can contain water.
（３）次のようにして、押出基を用いて粒状スチレン−
アクリロニトリル共重合体中に水を封入することができ
る。(3) Granular styrene using an extrusion group as follows.
Water can be encapsulated in the acrylonitrile copolymer.
まず、ベントロを塞いだ二軸押出機を用いてスチレン−
アクリロニトリル共重合体を押出しながら、注入ノズル
から水を圧入する。すると、水は樹脂と相溶性が悪い上
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, styrene was produced using a twin screw extruder with the vent hole closed.
While extruding the acrylonitrile copolymer, water is injected through the injection nozzle. Then, since the water has poor compatibility with the resin and is heated inside the cylinder, it vaporizes at the nozzle.
As a result, foamed resin is discharged.
この吐出物を水で急冷し、粒状に什トげると水の閉じ込
められた多孔物質のスチレン−アクリロニトリル共重合
体を得ることができる。When this discharged product is quenched with water and granulated, a porous styrene-acrylonitrile copolymer 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
破砕する方法がある。In order to make it into granules, there is a method of using an underwater cutter, or directly receiving the discharged material from a nozzle in a water tank, quenching it, and then crushing it.
（４）次のようにして、スチレン−アクリロニトリル共
重合体溶液を用いて、カプセル状に水を封入した粒状ス
チレン−アクリロニトリル共重合体を得ることができる
。(4) A granular styrene-acrylonitrile copolymer encapsulating water in capsule form can be obtained using a styrene-acrylonitrile copolymer solution in the following manner.
まず、スチレン−アクリロニレノル共重合体溶液中に氷
片を投入する０次いで、攪拌後取り出して真空乾燥する
ことにより、スチレン−アクリロニトリル共重合体によ
る水のカプセル状物を得ることができる。First, ice pieces are put into a styrene-acrylonylenol copolymer solution.Then, after stirring, the solution is taken out and vacuum-dried to obtain water capsules made of a styrene-acrylonitrile copolymer.
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、物理的に木を封じ込める場合と
があるが、スチレン−アクリロニトリル共重合体の水分
含有量を調節しやすいことから、後者の方が好ましい。As mentioned above, in the present invention, there are cases in which moisture is carried by utilizing hygroscopicity and cases in which wood is physically contained, but it is easy to adjust the moisture content of the styrene-acrylonitrile copolymer. Therefore, the latter is preferable.
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ある。この
使用に際して、本洗浄剤の含水量が０．２〜５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、洗浄に用いる熱可塑性樹脂
全体の含水量が０．２〜５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０．２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 exerts its cleaning effect by putting it into a molding machine and operating the molding machine normally. For this use, if the water content of the cleaning agent is 0.2 to 5% by weight, it may be used alone, but especially if the water content is 5% by weight, it may be used alone.
This cleaning agent exceeding 1% by weight is used in combination with other thermoplastic resins so that the total water content of the thermoplastic resin used for cleaning is 0.2 to 5% by weight. If the total water content is less than 0.2% by weight, it is difficult to obtain a sufficient cleaning effect.
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は、通
常の成形条件で高い洗浄効果が得られるよう、メルトフ
ローレイトが１−１０１−１Ｏ分（２２０℃＠１０ｋｇ
）で、特に次の成形に用いる成形材料の熱可塑性樹脂と
同一の組成のものが好ましい。Other thermoplastic resins used in combination with the above cleaning agent have a melt flow rate of 1-101-10min (220℃@10kg) so that high cleaning effects can be obtained under normal molding conditions.
), and it is particularly preferable to use one having the same composition as the thermoplastic resin of the molding material used in the next molding.
また、本洗浄剤の洗浄効果は、ある程度含水量に比例し
、メルトフローレイトに反比例する傾向を有する。従っ
て、含水量の小さいものほど、本洗浄剤に用いるスチレ
ン−アクリロニトリル共重合体並びに本洗浄剤と混合す
る他の熱可塑性樹脂のメルトフローレイトを小さくし、
逆にこれらのメルトフローレイトが大きいときには含水
量を犬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、本
洗浄剤に用いるスチレン−アクリロニトリル共重合体及
び本洗浄剤と混合する他の熱可塑性樹脂としては、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。Further, the cleaning effect of this cleaning agent tends to be proportional to the water content to some extent and inversely proportional to the melt flow rate. Therefore, the lower the water content, the lower the melt flow rate of the styrene-acrylonitrile copolymer used in this cleaning agent and other thermoplastic resins mixed with this cleaning agent.
Conversely, when these melt flow rates are large, it is preferable to increase the water content. In particular, this cleaning agent, which uses hygroscopic properties to retain moisture, is usually 2% by weight.
Since it is difficult to support moisture in excess of It is preferable to use a temperature of 220° C. for 10 minutes.
本洗浄剤は、滑剤として、ステアリン酸金属塩、特にス
テアリン酸マグネシウムを添加して使用することが好ま
しい。このステアリン酸金属塩を添加すると、本洗浄剤
を一層残留しにくくでき、また残留したものも除去しや
すくなる。It is preferable to use this detergent with the addition of a stearic acid metal salt, particularly magnesium stearate, as a lubricant. When this metal stearate is added, the present cleaning agent becomes less likely to remain, and any remaining substances can be easily removed.
上記ステアリン酸金属塩は、あらかじめ本洗浄剤を構成
するスチレン−アクリロニトリル共重合体や、本洗浄剤
と混合する他の熱可塑性樹脂に緑加混合しておくことが
できる。また、本洗浄剤の使用時に別途派加してもよい
。The stearic acid metal salt can be mixed in advance with the styrene-acrylonitrile copolymer constituting the present cleaning agent or other thermoplastic resin to be mixed with the present cleaning agent. Further, it may be added separately when using the present cleaning agent.
本洗浄剤は、ガラス繊維を添加して使用することができ
る。このガラスｍ＃Ｉとしては１通常プラスチック用と
して市販されているガラス繊維に比して、カップリング
剤を、２００〜３００％増量して２０００〜３０００ｐ
ｐ■にしたものが好ましい、また、長さ及び径は、通常
プラスチック用として市販されているものと同様である
。This cleaning agent can be used with the addition of glass fiber. This glass m#I contains 200 to 300% more coupling agent than the glass fibers commercially available for plastics.
It is preferable to use p■, and the length and diameter are the same as those commercially available for plastics.
上記ガラス繊維の使用量は次の通りである。The amount of the glass fiber used is as follows.
（１）含水量０．２〜５重量％の本洗浄剤のみを用いる
場合、この本洗浄剤７０〜９５重量％に対してガラス繊
維５〜３０重量％が好ましい。(1) When only the present cleaning agent with a water content of 0.2 to 5% by weight is used, 5 to 30% by weight of glass fiber is preferably used with respect to 70 to 95% by weight of the present cleaning agent.
（２）本洗浄剤に他の熱可塑性樹脂を混合して含水量を
０．２〜５重量％に調整したものを用いる場合、この本
洗浄剤及び他の熱可塑性樹脂７０〜９５重量％に対して
ガラス繊＃５〜３０重量％が好ましい。(2) When using this cleaning agent mixed with other thermoplastic resins to adjust the water content to 0.2 to 5% by weight, this cleaning agent and other thermoplastic resins may be mixed at 70 to 95% by weight. On the other hand, glass fiber #5 to 30% by weight is preferable.
上記いずれの場合も、ガラス繊維の量が５重縁％未満で
はガラス繊維を添加した効果がなく、また３０重量％を
越えると成形機のシリンダー摩擦等の悪影響を生じる。In any of the above cases, if the amount of glass fiber is less than 5% by weight, the addition of glass fiber will have no effect, and if it exceeds 30% by weight, adverse effects such as cylinder friction in the molding machine will occur.
ガラスａｍは、本洗浄剤の使用時に別途加えるようにし
てもよいが、本洗浄剤を構成するスチレン−アクリロニ
トリル共重合体や、本洗浄剤と混合する他の熱可塑性樹
脂にあらかじめ練り込んでおいてもよい。Glass am may be added separately when using this cleaning agent, but it can be mixed in advance into the styrene-acrylonitrile copolymer that makes up this cleaning agent or other thermoplastic resins that are mixed with this cleaning agent. You can stay there.
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
剤は、射出成形機、押出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
するシリンダ一部を有する装置であれば広く適用するこ
とができる。In order to make it easier to feed this cleaning agent into a molding machine and mix it with the other thermoplastic resins mentioned above, it is preferable that this cleaning agent be in the form of granules with the same size as general molding materials. Although this method is particularly useful for injection molding machines and extrusion molding machines, it can be widely applied to any device having a cylinder part that heats and melts thermoplastic resin and kneads it.
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％をベントロから添加すると好ましい結果が
得られる。When using this cleaning agent on a molding machine with a vent,
Favorable results are obtained when ~10% by weight is added via ventro.
本洗浄剤を用いる場合の成形機の運転条件は、シリンダ
ーの内圧が上昇するような条件に設定すると、効果がよ
りａＨ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 using this cleaning agent, it is preferable to set the operating conditions of the molding machine to such a condition that the internal pressure of the cylinder increases because the effect becomes more aH. That is, it is preferable to perform operations such as lowering the cylinder temperature within a range that allows for discharge, applying back pressure, and injecting at high speed.
［作 用Ｊ
スチレン−アクリロニトリル共重合体は、それ自身が成
形機内を移動するに伴なって、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。[Function J] As the styrene-acrylonitrile copolymer itself moves within the molding machine, it plays the role of peeling off residue within the molding machine from the attachment position and carrying it out.
スチレン−アクリロニトリル共重合体による上記残留物
の除去力は、前述したように、メルトフローレイトが小
さいほど大きくなる傾向にある。As described above, the ability of the styrene-acrylonitrile copolymer to remove the above-mentioned residues tends to increase as the melt flow rate decreases.
これはメルトフローレイトが大きいものは単に流れるよ
うに移動しやすいのに対して、メルトフローレイトが小
さいものはその移動時に残留物の引っ掛けて引き剥しや
すいためと考えられる。This is thought to be because a material with a large melt flow rate simply moves easily, whereas a material with a small melt flow rate easily catches residue and peels it off during movement.
特にスチレン−アクリロニトリル共重合体の中でもアク
リロニトリル含有量が５〜２４重量％であることは、こ
れによって成形材料との適度な親和性が得られ、洗浄剤
が残留物を随伴させやすくなる２井に、上記メルトフロ
ーレイトと相俟って、成形機への付着しにくさをもたら
していると推測される。In particular, the fact that the acrylonitrile content in the styrene-acrylonitrile copolymer is 5 to 24% by weight is that this provides a suitable affinity with the molding material and makes it easier for the cleaning agent to entrain residue. , combined with the above-mentioned melt flow rate, is presumed to cause difficulty in adhesion to the molding machine.
一方、含有されている水の働きは、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ものと考えられる。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, the function of the contained water is not necessarily clear, but it is heated in the molding machine and becomes steam, and this steam enters between the inside of the molding machine and the adhered residue, promoting the peeling of the adhered residue. It is thought that the It is also believed that the fact that the adhered residue is cooled and hardened to some extent by contact with steam also promotes its peeling.
［実施例］ 次に、本発明を、実施例及び比較例によって説明する。[Example] Next, the present invention will be explained with reference to Examples and Comparative Examples.
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。The molding machines, molding conditions, and measurement conditions used in Examples and Comparative Examples are as follows.
成形機：射出成形機（インラインスクリュー型）・東芝
ｌ５１２５ （型締力１２５トン・容量１００２）
成形温度：各実施例及び比較例毎に第１表に示す。Molding machine: Injection molding machine (in-line screw type), Toshiba l5125 (mold clamping force 125 tons, capacity 1002) Molding temperature: Table 1 shows each example and comparative example.
メルトフローレイト：ＪＩＳ−に７２１０によって測定
した。Melt flow rate: Measured according to JIS-7210.
アクリロニトリル含有量（ＡＮ％）：赤外線分光光度計
により測定した。Acrylonitrile content (AN%): Measured using an infrared spectrophotometer.
水分含有量二次式により求めた。Moisture content was calculated using a quadratic equation.
Ｗｌ−Ｗａ ／ Ｗｌ Ｘ １００％
（吸湿によるもの）
Ｗ２−Ｗ３ ／ Ｗ’＋ Ｘ １００％（封入によるも
の）
ＷＩ ：サンプルの重量
Ｗ２ ：サンプルを８０℃、２時間
熱風乾燥した後の重量
Ｗ３：Ｗ２測定後のサンプルを粉
砕し、８０℃、２時間熱風
乾燥した後の重量
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
ＡＢＳ樹脂黒色着色成形材料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。Wl-Wa / Wl X 100% (due to moisture absorption) W2-W3 / W'+ Weight after crushing the sample after W2 measurement and drying with hot air at 80°C for 2 hours W4: Weight after crushing the sample and drying with hot air at 80°C for 2 hours Example 1 ABS resin black colored molding material was placed in the molding machine After filling, the inside of the molding machine was emptied by completely discharging it.
次に、第１表に示す本発明の洗浄剤（ＡＳ樹脂ベース）
を第１表に示される量だけ投入し、これを射出操作によ
り排出し終るまでの時間を測定した。また、洗浄剤の排
出後に一般成形用のＡＢＳ樹脂無色成形材料の射出操作
を行って、前記黒色着色成形材料の残留物の影響（黒色
の汚班）の無いことが確認されるまでの時間と使用した
無色成形材料の量を測定した。Next, the cleaning agent of the present invention (AS resin base) shown in Table 1
The amount shown in Table 1 was put in, and the time until it was completely discharged by injection operation was measured. In addition, after the cleaning agent is discharged, an ABS resin colorless molding material for general molding is injected, and the time required to confirm that there is no effect of the residue of the black colored molding material (black stains). The amount of colorless molding material used was measured.
その結果を第１表に示す。The results are shown in Table 1.
比較例１
ＡＢＳ樹脂黒色着色成形材料の排出後、直ちに一般成形
用のＡＢＳ樹脂無色成形材料の射出操作を行った以外は
、実施例１と同じ材料と手順で同じ測定を行った。Comparative Example 1 The same measurements were performed using the same materials and procedures as in Example 1, except that after discharging the ABS resin black colored molding material, the injection operation of the ABS resin colorless molding material for general molding was immediately performed.
その結果を第１表に示す。The results are shown in Table 1.
実施例２
洗浄対象をスチレン−アクリロニトリル共重合体（Ａｓ
樹脂）黒色着色成形材料とし、本発明の洗浄剤の射出操
作後、−膜成形用のＡＳ樹脂無色成形材料で射／ｌｔｌ
操作をした以外は、実施例１と同様にして測定を行った
。Example 2 The object to be cleaned was styrene-acrylonitrile copolymer (As
resin) as a black colored molding material, and after the injection operation of the cleaning agent of the present invention, injected with an AS resin colorless molding material for film molding/ltl.
Measurement was performed in the same manner as in Example 1, except for the operations.
その結果を第１表に示す。The results are shown in Table 1.
比較例２
ＡＳ樹脂黒色着色成形材料の排出後、直ちに一般成形用
のＡＳ樹脂無色成形材料の未乾燥のもので射出操作を行
った以外は、実施例２と同様にして測定を行った。Comparative Example 2 Measurements were carried out in the same manner as in Example 2, except that after discharging the black colored AS resin molding material, the injection operation was immediately performed with an undried, colorless AS resin molding material for general molding.
その結果を第１表に示す。The results are shown in Table 1.
実施例３
本発明の洗浄剤の含水量を１．７重量％とした以外は、
実施例２と同様にして測定を行った。Example 3 Except that the water content of the cleaning agent of the present invention was 1.7% by weight,
Measurements were carried out in the same manner as in Example 2.
その結果を第１表に示す。The results are shown in Table 1.
比較例３
実施例３で用いた洗浄剤に代えて、その含水量を０重量
％にしたものを用いた以外は、実施例３と同様にして測
定を行った。Comparative Example 3 Measurements were carried out in the same manner as in Example 3, except that instead of the cleaning agent used in Example 3, a cleaning agent with a water content of 0% by weight was used.
その結果を第１表に示す。The results are shown in Table 1.
実施例４
洗浄剤にステアリン酸マグネシウムを０．５重量％添加
して用いた以外は、実施例２と同様にして測定を行った
。Example 4 Measurements were carried out in the same manner as in Example 2, except that 0.5% by weight of magnesium stearate was added to the cleaning agent.
その結果を第１表に示す。The results are shown in Table 1.
比較例４
洗浄剤として、−膜成形用のＡＳ樹脂無色成形材料（メ
ルトフローレイト２２ｇ／１０分）にステアリン酸マグ
ネシウムを０．５重量％添加した未乾燥のものを用いた
以外は、実施例２と同様にして測定を行った。Comparative Example 4 Example 4 except that an undried detergent prepared by adding 0.5% by weight of magnesium stearate to a colorless AS resin molding material for membrane molding (melt flow rate 22 g/10 min) was used as the cleaning agent. Measurement was carried out in the same manner as in 2.
その結果を第１表に示す。The results are shown in Table 1.
実施例５
洗浄対象をポリカーボネイト（ＰＣ）黒色着色成形材料
とし、本発明の洗浄剤としてガラス繊維を２０重量％添
加したものを用い、この本発明の洗浄剤の射出操作後、
−膜成形用のポリカーボネイト透明成形材料で射出操作
を行った以外は、実施例１と同様にして測定を行った。Example 5 The object to be cleaned was a polycarbonate (PC) black colored molding material, and the cleaning agent of the present invention to which 20% by weight of glass fiber was added was used. After the injection operation of the cleaning agent of the present invention,
- Measurements were carried out in the same manner as in Example 1, except that the injection operation was performed using a polycarbonate transparent molding material for film molding.
その結果を第１表に示す。The results are shown in Table 1.
比較例５ 洗浄剤として、−膜成形用のＡｓ樹脂無色成夕。Comparative example 5 As a cleaning agent: - Colorless As resin for film forming.
材料（メルトフローレイト２２ｇ７１０分）にンラス繊
誰を２０重量％添加した未乾燥のものをｔいた以外は、
実施例５と同様にして測定を行・た。Except for using undried materials (melt flow rate 22g 710 minutes) with 20% by weight of non-woven fibers added.
Measurements were carried out in the same manner as in Example 5.
その結果を第１表に示す。The results are shown in Table 1.
実施例６
洗浄対象をポリメチルメタクリレ−） （ＰＭ！ＩＩＡ
）赤色着色成形材料とし、本発明の洗浄剤の井出操作後
、一般成形用のポリメチルメタクリレート透明成形材料
で射出操作を行った以外は、実温例１と同様にして測定
を行った。Example 6 Cleaning target: polymethyl methacrylate) (PM!IIA
) Measurements were carried out in the same manner as in Example 1 at actual temperature, except that a red-colored molding material was used, and after the injection operation of the cleaning agent of the present invention, an injection operation was performed with a polymethyl methacrylate transparent molding material for general molding.
その結果を第１表に示す。The results are shown in Table 1.
比較例６
実施例６で用いた洗浄剤に代えて、アクリロニトリル含
有量が２５重量％のスチレン−７クリロニトリル共重合
体で構成したものを用いた以外は、実施例６と同様にし
て測定を行った。Comparative Example 6 Measurements were carried out in the same manner as in Example 6, except that instead of the cleaning agent used in Example 6, a detergent made of styrene-7 acrylonitrile copolymer with an acrylonitrile content of 25% by weight was used. went.
その結果を第１表に示す。The results are shown in Table 1.
実施例７
実施例６で用いた洗浄剤に代えて、メルトフローレイト
が２ｇ／１０分（２２０℃−１０ｋｇ）のスチレン−ア
クリロニトリル共重合体に同じメルトフローレイトのポ
リメチルメタクリレートを５０重量％加えた材料で構成
した本発明の洗浄剤を用いた以外は、実施例６と同様に
して測定を行った。Example 7 Instead of the cleaning agent used in Example 6, 50% by weight of polymethyl methacrylate with the same melt flow rate was added to a styrene-acrylonitrile copolymer with a melt flow rate of 2 g/10 minutes (220°C - 10 kg). Measurements were carried out in the same manner as in Example 6, except that the cleaning agent of the present invention made of the same material was used.
その結果を第１表に示す。The results are shown in Table 1.
比較例７
ポリメチルメタクリレート赤色着色成形材料の排出後、
直ちに一般成形用のポリメチルメタクリレート無色成形
材料で射出操作を行った以外は、実施例６と同様にして
測定を行った。Comparative Example 7 After discharging polymethyl methacrylate red colored molding material,
Measurements were carried out in the same manner as in Example 6, except that the injection operation was immediately performed using a colorless polymethyl methacrylate molding material for general molding.
その結果を第１表に示す。The results are shown in Table 1.
比較例８
実施例６で用いた洗浄剤に代えて、メルトフローレイト
が２ｇ／１０分（２２０℃−１０ｋｇ）で、含水量０重
量％のポリスチレンを用いた以外は、実施例６と同様に
して測定を行った。Comparative Example 8 The same procedure as Example 6 was carried out, except that polystyrene with a melt flow rate of 2 g/10 minutes (220°C - 10 kg) and a water content of 0% by weight was used instead of the cleaning agent used in Example 6. The measurements were carried out.
結果を＃！１表に示す。#Results! It is shown in Table 1.
比較例９
実施例６で用いた洗浄剤に代えて、メルトフローレイト
が２ｇ／１０分（２２０℃ｅｌＯｋｇ）で、含水量０重
量％のポリプロビレを用いた以外は、実施例６と同様に
して測定を行った。Comparative Example 9 The same procedure as in Example 6 was carried out, except that polypropylene with a melt flow rate of 2 g/10 minutes (220°C elOkg) and a water content of 0% by weight was used instead of the cleaning agent used in Example 6. Measurements were taken.
結果を第１表に示す。The results are shown in Table 1.
（以下余白）
［発明の効果］
本発明は１以上説明した通りのものであり、次の効果を
奏するものである。(The following is a blank space) [Effects of the Invention] The present invention has the above-described advantages, and has the following effects.
（１）高い洗浄効果が得られるので、少ない洗浄剤によ
る短時間の操作で洗浄処理が済む。(1) Since a high cleaning effect can be obtained, the cleaning process can be completed in a short time using a small amount of cleaning agent.
（２）洗浄剤自体の成形機内への残留が少ないので、そ
の後に行われる成形材料による洗浄剤の排出処理が、少
量の成形材料による短時間の処理で済む。(2) Since there is little residual cleaning agent itself in the molding machine, the subsequent discharge process of the cleaning agent using the molding material can be done in a short time using a small amount of the molding material.
（３）以上のことから、成形機の洗浄における洗浄剤及
び成形材料の消費量を減らし、処理時間を短縮できるの
で、洗浄のための経費及び作業負担を大幅に軽減できる
ものである。(3) From the above, the amount of cleaning agent and molding material consumed in cleaning the molding machine can be reduced, and the processing time can be shortened, so that the expense and work burden for cleaning can be significantly reduced.
Claims (1)
２２０℃・１０ｋｇ）で、アクリロニトリル含有量が５
〜２４重量％であるスチレン−アクリロニトリル共重合
体に０．２〜２５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) Melt flow rate is 0.5-10g/10min (
220℃・10kg), the acrylonitrile content is 5
A cleaning agent for a molding machine, comprising a styrene-acrylonitrile copolymer containing 0.2 to 25% by weight of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12901990A JP2884429B2 (en) | 1990-05-21 | 1990-05-21 | Cleaning agent for molding machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12901990A JP2884429B2 (en) | 1990-05-21 | 1990-05-21 | Cleaning agent for molding machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0425600A true JPH0425600A (en) | 1992-01-29 |
| JP2884429B2 JP2884429B2 (en) | 1999-04-19 |
Family
ID=14999147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12901990A Expired - Lifetime JP2884429B2 (en) | 1990-05-21 | 1990-05-21 | Cleaning agent for molding machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2884429B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013035598A1 (en) * | 2011-09-06 | 2013-03-14 | 三菱瓦斯化学株式会社 | Thermoplastic resin composition for cleaning applications, and cleaning method |
-
1990
- 1990-05-21 JP JP12901990A patent/JP2884429B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013035598A1 (en) * | 2011-09-06 | 2013-03-14 | 三菱瓦斯化学株式会社 | Thermoplastic resin composition for cleaning applications, and cleaning method |
| JPWO2013035598A1 (en) * | 2011-09-06 | 2015-03-23 | 三菱瓦斯化学株式会社 | Thermoplastic resin composition for cleaning and cleaning method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2884429B2 (en) | 1999-04-19 |
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