JP2501218B2 - Cleaning agent for molding machine - Google Patents
Cleaning agent for molding machineInfo
- Publication number
- JP2501218B2 JP2501218B2 JP62325545A JP32554587A JP2501218B2 JP 2501218 B2 JP2501218 B2 JP 2501218B2 JP 62325545 A JP62325545 A JP 62325545A JP 32554587 A JP32554587 A JP 32554587A JP 2501218 B2 JP2501218 B2 JP 2501218B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- molding machine
- cleaning
- cleaning agent
- molding
- 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
Links
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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
- B29C33/722—Compositions for cleaning moulds
-
- 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
- B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
- B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 （産業上の利用技術分野） 本発明は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洗浄するための洗浄剤に関
するものである。Description: TECHNICAL FIELD The present invention relates to a detergent for washing a thermoplastic resin remaining in a molding machine and additives such as dyes and pigments contained therein.
（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。(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 dyes and pigments contained in the resin, etc. Additive remains in the molding machine.
この残留物は、次の異種樹脂又は異色樹脂を成形する
際に成形品中に混入し、製品外観不良の原因となる。This residue is mixed in the molded product when the next different type resin or different color resin is molded, which causes a defective appearance of the product.
従来、このような樹脂替えや色替えを連続的に実施す
る有効な手段が存在しない為、人力による成形機の分解
掃除する方法、成形機を停止せず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, there is no effective means to continuously perform such resin change and color change, so a method of disassembling and cleaning the molding machine by human power, filling the molding machine with resin to be used for molding without stopping the molding machine However, a method of gradually replacing the residue by this and a method of using a commercially available detergent are implemented.
（発明が解決しようとする問題点） しかし、人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成つている。又、
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がある。(Problems to be Solved by the Invention) However, dismantling and cleaning by manpower requires a large number of manpower and a long time, which is a major factor of productivity decrease. or,
There is a problem that a 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).
また、成形材料で置換して行く方法では、成形を目的
とする樹脂が洗浄に適した設計に成つていない為、洗浄
効果が低い。従つて多量の樹脂と長時間を要する上に、
残留物の種類によつては、除去出来ない場合がある（例
えばゴム熱劣化物）。Further, in the method of substituting with a molding material, the cleaning effect is low because the resin for molding is not designed to be suitable for cleaning. Therefore, in addition to requiring a large amount of resin and a long time,
Depending on the type of residue, it may not be possible to remove it (for example, rubber heat deterioration product).
さらに、洗浄剤を用いる方法において、洗浄剤と呼称
されている物に以下の３種類が有るがいずれも洗浄剤と
して下記の如き致命的欠点を有し一般に普及していな
い。Further, in the method using a cleaning agent, there are the following three types of so-called cleaning agents, but all of them have the following fatal defects as cleaning agents and are not generally used.
（１） 半溶融タイプ（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）は、
成形機内に残留し易く次の成形材に混入し、異物トラブ
ルを発生させる。(1) Semi-molten type (a super-polymer acrylic resin containing a foaming agent, kaolin and calcium carbonate)
It easily remains in the molding machine and mixes into the next molding material, causing foreign matter trouble.
（２） 完全溶融タイプ（ABS樹脂に界面活性剤を含有
させたもの）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) The completely melted type (ABS resin containing a surfactant) has a low cleaning effect and requires a long time to return to a transparent resin after cleaning.
（３） ブレンドタイプ（発泡剤入り金属石鹸）は洗浄
効果が低いうえに、成形材への予備ブレンド作業であ
る。(3) The blend type (metal soap containing a foaming agent) has a low cleaning effect and is a pre-blending work for the molding material.
（問題点を解決するための手段） 本発明は、このような従来の問題点に着目して成され
たもので、その目的とするところは熱可塑性樹脂用成形
機内残留物の洗浄材料として、含水させたスチレン−ア
クリロニトリル共重合樹脂が洗浄時間と洗浄用樹脂を大
巾に削減することが可能であることを見出し、本発明を
完成した。(Means for Solving Problems) The present invention has been made by paying attention to such conventional problems, and an object thereof is as a cleaning material for residues in a molding machine for thermoplastic resin, The present invention has been completed by finding that the hydrated styrene-acrylonitrile copolymer resin can greatly reduce the cleaning time and the cleaning resin.
すなわち、本発明は、メルトフローレイトが１〜4g/1
0分（220℃・10kg）であるスチレン−アクリロニトリル
共重合樹脂に水分を0.5〜２％含有させた成形機用洗浄
剤である。That is, the present invention has a melt flow rate of 1 to 4 g / 1.
A cleaning agent for a molding machine, which is made by adding 0.5 to 2% of water to a styrene-acrylonitrile copolymer resin for 0 minutes (220 ° C, 10 kg).
本発明に用いるスチレン−アクリロニトリル共重合樹
脂としては、メルトフローレイトが１〜4g/10分（220
℃,10kg）であることが必要であり、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200〜280℃で使用できなく、また4g/10分以上では
洗浄効果が低下する。また、該樹脂はアクリロニトリル
の含有量が25〜50重量％、更に30〜50重量％であること
が好ましい。The styrene-acrylonitrile copolymer resin used in the present invention has a melt flow rate of 1 to 4 g / 10 minutes (220
℃, 10kg), and if the melt flow rate is less than 1g / 10 minutes, it cannot be used under standard molding conditions, such as the molding temperature of 200-280 ℃, and the cleaning effect at 4g / 10 minutes or more. Is reduced. The acrylonitrile content of the resin is preferably 25 to 50% by weight, more preferably 30 to 50% by weight.
本発明において用いる水は、スチレン−アクリロニト
リル共重合樹脂に、0.5〜２重量％含有させることが必
要である。含水量が、0.5％未満では洗浄効果が劣り、
２％以上では洗浄操作が機械的に困難と成る。The water used in the present invention must be contained in the styrene-acrylonitrile copolymer resin in an amount of 0.5 to 2% by weight. If the water content is less than 0.5%, the cleaning effect is poor,
If it exceeds 2%, the washing operation becomes mechanically difficult.
スチレン−アクリロニトリル共重合樹脂に、水分を保
持させる方法は、自然吸水やブレンダー等で水を付着さ
せる方法がある。As a method of retaining water in the styrene-acrylonitrile copolymer resin, there is a method of adhering water by natural water absorption or a blender.
本発明の洗浄剤が適用できる樹脂としては、射出及び
押出し成形に供される熱可塑性樹脂、例えばポリスチレ
ン、SAN、ABS、ポリプロピレン、ポリメチルメタクリレ
ート樹脂等が挙げられる。Examples of the resin to which the cleaning agent of the present invention can be applied include thermoplastic resins used for injection and extrusion molding, such as polystyrene, SAN, ABS, polypropylene, polymethylmethacrylate resin and the like.
（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。(Example) 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.
成形機：射出成形機（インラインスクリユー型）東芝IS
125（型締力125トン・容量10oz） 成形温度：実施例・比較例毎に表−１に示す。Molding machine: Injection molding machine (In-line screen type) Toshiba IS
125 (mold clamping force 125 tons, capacity 10 oz) Molding temperature: See Table 1 for each example and comparative example.
メルトフローレイト:JIS−K7210。Melt flow rate: JIS-K7210.
AN％：赤外分光光度計。AN%: Infrared spectrophotometer.
含水分％:105℃・2Hrの加熱減量。Moisture content: Heat loss of 105 ℃ ・ 2Hr.
実施例１ ABS樹脂黒着色品を成形機内に充填後、完全に排出し
成形機内を空にする。つぎに、表−１に示す本発明の洗
浄剤を2kg投入し射出操作により排出後、ABS樹脂無色品
を成形し前述の黒着色品の残留物の影響（黒色の汚斑）
の無いことを確認し、合わせて所要時間を測定した。そ
の結果を表−１に示す。Example 1 A black colored ABS resin product is filled in a molding machine and then completely discharged to empty the molding machine. Next, 2 kg of the cleaning agent of the present invention shown in Table 1 was charged and discharged by an injection operation, and then an ABS resin colorless product was molded, and the effect of the residue of the above black colored product (black stain)
It was confirmed that there was no, and the required time was measured together. The results are shown in Table-1.
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、成形機内を空にする。つぎに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（黒色の汚斑）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 to empty the molding machine. Next, the ABS colorless product was put into a molding machine, and the amount of resin required and the time required for eliminating the influence of the black colored product (black stain) by molding were measured. The results are shown in Table-1.
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. The results are shown in Table-1.
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、AS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 In the same manner as in Comparative Example 1, the AS resin black colored product is unloaded and emptied, and then washed with the AS resin colorless product to be molded next, until the influence of the AS resin black colored product disappears. The amount of resin and the time required were measured. The results are shown in Table-1.
実施例３ 含水量1.7％の洗浄剤を用いる以外は実施例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. 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、含水量ゼロ％の洗
浄剤を用いる以外は実施例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 a cleaning agent having a water content of 0% was used instead of the cleaning agent used in Example 3. The results are shown in Table-1.
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する。つぎに表−１に
示す本発明の洗浄剤を1kg投入し、射出操作により排出
後、AS樹脂無色品を成形し前述のABS樹脂の影響（白
濁）の無い事を確認し、合わせて所要時間を測定した。
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 is filled into the molding machine and then completely discharged to empty the molding machine. Next, 1 kg of the cleaning agent of the present invention shown in Table 1 was charged and discharged by an injection operation, then a colorless AS resin product was molded and it was confirmed that there was no influence of the above ABS resin (white turbidity). Was measured.
The results are shown in Table-1.
比較例４ 洗浄剤を用いない以外は実施例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て成形機内を
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 that no detergent was used, that is, the ABS resin colorless product was filled into the molding machine and then completely discharged to empty the molding machine, and then washed with the AS resin colorless product, and the ABS resin The required amount of resin and the time required to eliminate the influence of were measured.
The results are shown in Table-1.
比較例５ 洗浄剤として従来の半溶融タイプを用いる以外は実施
例１と同様にテストを行つた。その結果、着色の影響
は、2kgの使用量で無くなつたが、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
を得なかつた。結果を表−１に示す。Comparative Example 5 A test was performed in the same manner as in Example 1 except that a conventional semi-molten type was used as the cleaning agent. As a result, the effect of coloring disappeared at the usage amount of 2 kg, but in the case of molding with a colorless ABS product, the cleaning agent was mixed as a foreign substance, and it was inevitable to carry out disassembly cleaning. The results are shown in Table 1.
比較例６ 洗浄剤として、従来の完全溶融タイプを用いる以外は
実施例１と同様にテストを行つた。その結果を表−１に
示す。Comparative Example 6 A test was performed in the same manner as in Example 1 except that the conventional complete melting type was used as the cleaning agent. The results are shown in Table-1.
比較例７ 洗浄剤として従来のブレンドタイプを用いる以外は、
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 7 Except that a conventional blend type was used as the cleaning agent,
The test was carried out as in Example 1. The results are shown in Table-1.
Claims (1)
・10kg）であるスチレン−アクリロニトリル共重合樹脂
に水分を0.5〜２重量％含有させた成形機用洗浄剤1. A melt flow rate of 1 to 4 g / 10 minutes (220 ° C.
・ 10 kg) styrene-acrylonitrile copolymer resin containing 0.5 to 2% by weight of water
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62325545A JP2501218B2 (en) | 1987-12-24 | 1987-12-24 | Cleaning agent for molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62325545A JP2501218B2 (en) | 1987-12-24 | 1987-12-24 | Cleaning agent for molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01167353A JPH01167353A (en) | 1989-07-03 |
| JP2501218B2 true JP2501218B2 (en) | 1996-05-29 |
Family
ID=18178083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62325545A Expired - Lifetime JP2501218B2 (en) | 1987-12-24 | 1987-12-24 | Cleaning agent for molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501218B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014136632A (en) * | 2013-01-17 | 2014-07-28 | Toyo Kanetsu Solutions Kk | Belt meander arrester |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4012798C1 (en) * | 1990-04-21 | 1991-08-14 | Bayer Ag, 5090 Leverkusen, De | |
| JPH04246443A (en) * | 1991-01-31 | 1992-09-02 | Chisso Corp | Washing composition |
| US5958313A (en) * | 1996-04-11 | 1999-09-28 | Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha | Purging agent |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5720998B2 (en) * | 1974-01-16 | 1982-05-04 | ||
| JPS6036117A (en) * | 1983-08-09 | 1985-02-25 | Daihatsu Motor Co Ltd | Color change for colored resin molding |
| JPS62117712A (en) * | 1985-11-18 | 1987-05-29 | Mitsui Toatsu Chem Inc | Purging of resin |
-
1987
- 1987-12-24 JP JP62325545A patent/JP2501218B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014136632A (en) * | 2013-01-17 | 2014-07-28 | Toyo Kanetsu Solutions Kk | Belt meander arrester |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01167353A (en) | 1989-07-03 |
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