JPS5912808A - Material and method for cleaning thermoplastic resin molding machine - Google Patents
Material and method for cleaning thermoplastic resin molding machineInfo
- Publication number
- JPS5912808A JPS5912808A JP12237382A JP12237382A JPS5912808A JP S5912808 A JPS5912808 A JP S5912808A JP 12237382 A JP12237382 A JP 12237382A JP 12237382 A JP12237382 A JP 12237382A JP S5912808 A JPS5912808 A JP S5912808A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- cleaning
- thermoplastic resin
- molding machine
- cleaning material
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 “本発・明は、一つの熱可塑性樹脂成形機により。[Detailed description of the invention] “The present invention is based on one thermoplastic resin molding machine.
色叉は材：料を□切り替えて成形する際に、シリンダー
内部、ノズル内部等の溶融樹呵旨通路に滞留する材料を
洗浄する材料及び洗浄方法に関する。The present invention relates to a material and a cleaning method for cleaning the material that remains in the molten resin passage inside the cylinder, inside the nozzle, etc. when changing the color or material for molding.
従来・２つの熱電哨性閘詣成形機によって、熱可塑性Ｆ
ＮＱＩ？材料の色替え、材料替えをして成形す名隙には
一成形機のシ゛リンダー内部、ノズル内部。Traditionally, two thermoplastic molding machines are used to produce thermoplastic F.
NQI? The inside of the cylinder and nozzle of the molding machine is a good place to change the color of the material or change the material for molding.
廊の′溶＾禰晰通路に滞留している第１の材料を外部に
排出して入れ替えすることが必要であり、このため・、
第２の材料の初期流通によって滞留する慎１の材料を排
出する力為、あるいは、第１の材料を一目アクリル系洗
浄材料（アクリル系樹脂成形品のスクラップを粉砕した
もの１例えばタイホウデ業■製のタイクリーン〔商品名
）。以下、洗浄材料Ｃという。）によって排出して入れ
替えたのち−さらに該洗浄材料を第２の材料によって排
出して入れ替えを行なっていた。It is necessary to discharge the first material accumulated in the molten passageway of the corridor to the outside and replace it.
To discharge the remaining material due to the initial distribution of the second material, or to remove the first material with an acrylic cleaning material (such as crushed scraps of acrylic resin molded products) Thai Clean [product name]. Hereinafter, it will be referred to as cleaning material C. ), and then the cleaning material is discharged and replaced by a second material.
ところで、実験結果によれば、第１図に示すとおり、一
般の熱可塑性樹脂が溶融して所定の内径φＤを葺する管
内を流れるときの管内断面の流動速度分布（以下、速度
分布という）Ｖは管の中央から管壁に向けて流れ速度が
急激に低下するいわゆる非ニユートン流を呈する。By the way, according to experimental results, as shown in Fig. 1, when a general thermoplastic resin melts and flows through a pipe having a predetermined inner diameter φD, the flow velocity distribution (hereinafter referred to as velocity distribution) V exhibits a so-called non-Newtonian flow in which the flow velocity rapidly decreases from the center of the tube toward the tube wall.
このため、前記した従来の前者の方法によれば。Therefore, according to the former method described above.
＠２−ａ図に示すように、滞留する筑１の材料Ａ（熱可
塑性樹脂成形であって管内の速度分布ＶＡ〔非ニユート
ン流〕を有する）を第２の材料Ｂ（熱可塑性樹脂材料で
あって、管内の速度分布ＶＢ〔沖ニュートン流）を有す
る）によって排出することとなるが、材料Ａ、Ｂとも非
ニユートン流の流れ性を汀するために、第２−ｂ図に示
すように。@ As shown in Figure 2-a, the material A (thermoplastic resin molded and has a velocity distribution VA [non-Newtonian flow] in the pipe) of the remaining chiku1 is transferred to the second material B (thermoplastic resin material). However, in order to suppress the non-Newtonian flow properties of both materials A and B, as shown in Figure 2-b, .
管壁部に滞留する第１の材料ＡＦｉ極めてわずかづつし
か排出されないため多量な簗２の材料Ｂを長時間流通さ
せることが必要であり１作業時間が多大となりかつ材料
Ｂの無駄な消費が多くなる問題があった。Since only a very small amount of the first material AFi remaining on the pipe wall is discharged, it is necessary to circulate a large amount of the material B of the phlegm 2 for a long time, resulting in a large amount of work time and a large amount of wasteful consumption of the material B. There was a problem.
また、後者の方法においては、加熱を一旦中断１〜た溶
融帽脂通路内に前記洗浄材料Ｃを流通させた場合半溶融
状の固体流となるため、その流れ性は＊ 第２．−０図
に示すように、管内の流速がほぼ同じ速度分布ＶＣであ
るいわゆるプラグ流であり。In addition, in the latter method, when the cleaning material C is passed through the molten fat passage where the heating has been temporarily interrupted, it becomes a semi-molten solid stream, so its flowability is *2. As shown in Fig.-0, the flow velocity in the pipe is a so-called plug flow in which the velocity distribution VC is almost the same.
従ちて洗浄材料Ｃによって第１の材料Ａは円滑に排出さ
れる。しかしながら洗浄材料Ｃはほぼ固体流のため成形
機に高い負荷がかかり連続投入は不５ｒ能なため断続投
入をせざるをえない。しかも洗浄材料Ｃを第２の材料Ｂ
で押し出す時には洗浄材料Ｃが比較的粘度が高いために
９竿２の材料Ｂの初期流通によって洗浄材料Ｃを排出す
るためには比較的多喰の材料Ｂを必要としていた。Therefore, the first material A is smoothly discharged by the cleaning material C. However, since the cleaning material C is almost a solid flow, it places a high load on the molding machine and cannot be continuously charged, so it has to be fed intermittently. Moreover, the cleaning material C is replaced by the second material B.
Since the cleaning material C has a relatively high viscosity when being extruded, a relatively large amount of the material B is required to discharge the cleaning material C by the initial flow of the material B through the nine rods 2.
本発明はり１１記の点に鑑みてなされたものであり。The present invention has been made in view of the points mentioned in Section 11.
前述したアクリル系の洗浄材料Ｃに代えて低粘度でかつ
核洗浄材料と同等の流れ性を存する洗浄材料とこれを用
いた洗浄方法を提供することを目的とする。It is an object of the present invention to provide a cleaning material that has a low viscosity and has flowability equivalent to that of a nuclear cleaning material in place of the acrylic cleaning material C mentioned above, and a cleaning method using the same.
すなわち１本発明は、ポリプロピレン、エチレンビニ−
ルア七テート、ポリエチレン、ポリスチレン、ＡＲ８［
脂、ＡＥＳ樹脂、Ａｓ閘詣等の熱可塑性樹脂１００重量
部に対し、木粉９紙、ヤシ弘。That is, 1 the present invention is based on polypropylene, ethylene vinyl
Lua heptatate, polyethylene, polystyrene, AR8 [
For 100 parts by weight of a thermoplastic resin such as resin, AES resin, and As ferro resin, 9 parts of wood powder and paper and Yasuhiro.
ガラ、ワラ等の天＃１ｍＭの少くとも１種類を２０〜５
００重織部の範囲で混合してなる熱可塑性樹脂成形に用
いる洗浄材料、ならびに、熱可塑性（資）詣成形機によ
って所定の熱可塑性樹脂材料によって成形加工したのち
、ポリプロピレン、エチレンビニールアセテート、ポリ
エチレン、？リスチ一部の範囲で混合してなる洗浄材料
を成形機の樹脂通路内に流通させて滞留樹脂を洗浄排出
することを特徴とする熱可塑性樹脂成形機の洗浄方法で
ある。20 to 5 pieces of at least one type of gar, straw, etc. at #1mM
Cleaning materials used for thermoplastic resin molding made by mixing within the range of 0.00 heavy weaving parts, and polypropylene, ethylene vinyl acetate, polyethylene, ? This is a method for cleaning a thermoplastic resin molding machine, characterized in that a cleaning material mixed in a part of the molding machine is passed through a resin passage of the molding machine to wash and discharge the accumulated resin.
次に本発明の具体的実施例について説明する。Next, specific examples of the present invention will be described.
粉１００重量部の割合でミキサーに投入して微粒化して
乾式混合したのち、２軸スクリ一ユー押出機を用いて温
度２００”Ｃで溶融混合し押出してペレット化すること
により製造する。The powder is produced by charging 100 parts by weight of the powder into a mixer, pulverizing it and dry-mixing it, then melt-mixing it at a temperature of 200''C using a twin-screw extruder, and extruding it into pellets.
次に、前記洗浄材料を用いた洗浄方法について説明する
。Next, a cleaning method using the cleaning material described above will be explained.
まず、茶色のポリプロピレン樹脂成形品を成形すべく、
饗レット状のポリプロピレン樹脂（茶色）材料（以下９
第１の成形材料Ｅという）を、＠４図に示すスクリュー
インライン型押出成形機（スクリューシリンダー内径：
６５−、シリンダー長： １４３０ｍ、スクリュー回転
数ニア０ｒｐｍ）のホッパー１１に投入し、温度２１１
０″Ｃで加熱溶融１７てスクリューシリンダー内部１２
．ノズル内部１３（以下９通路１２．１３という）を流
通させて、セットされた一対の成形型１４．１５の隙間
に押出す春ことにより、成形材料Ｅの投入端に応じて、
所定個数の茶色のポリプロピレン樹脂成形品を成形する
。成形が完了したのち第４図に示すように、一対の成形
型１４．１５を分離して成形品を取出す。このとき、前
記の通路１２．１３全体に第１の成形材料Ｅが滞留する
。First, in order to mold a brown polypropylene resin molded product,
Cheek-shaped polypropylene resin (brown) material (below 9
The first molding material E) is processed using a screw in-line extrusion molding machine (screw cylinder inner diameter:
65-, cylinder length: 1430 m, screw rotation speed near 0 rpm), and the temperature was 211.
Heat and melt 17 at 0″C to inside the screw cylinder 12
．． By circulating the inside of the nozzle 13 (hereinafter referred to as 9 passages 12.13) and pushing the spring into the gap between the pair of molds 14.15 set, depending on the input end of the molding material E,
A predetermined number of brown polypropylene resin molded products are molded. After the molding is completed, as shown in FIG. 4, the pair of molds 14 and 15 are separated and the molded product is taken out. At this time, the first molding material E remains throughout the passage 12.13.
次に、前述した本発明の洗浄材、料（以下、洗浄材料Ｇ
という）のペレット材３ Ｋｑをホッパー１１に投入し
て温度２００ ’Ｃで加熱溶融して４分間で通路１２．
１３を流通させることにより該通路１２．１３に滞留し
ている成形材料１りを成形機外に排出して通路１２．１
３を洗浄する。入れ替わりに洗浄材料Ｇが通路１２．１
３に滞留することになる。Next, the cleaning material of the present invention described above (hereinafter referred to as cleaning material G) will be described.
Pellet material 3 Kq (called ) is put into the hopper 11, heated and melted at a temperature of 200'C, and passed through the passage 12 in 4 minutes.
13, the molding material staying in the passage 12.13 is discharged to the outside of the molding machine and the passage 12.1
Wash 3. Cleaning material G is replaced in passage 12.1.
It will stay at 3.
この場合９通路１２．１３に滞留していた成形材料Ｅの
流れ性は、第３−ａ図に示す速（９）分布ＶＢの非ニユ
ートン流であり、−！た。洗浄材料Ｇは。In this case, the flowability of the molding material E retained in the 9 passages 12.13 is a non-Newtonian flow with a velocity (9) distribution VB shown in Figure 3-a, and -! Ta. Cleaning material G.
ポリプロピレンの粒子間に繊維材料を分散混入させたこ
とから、消融流動させた場合前記繊維材料とポリプロピ
レンの粒子間、繊維材料粒子と管内壁面の摩擦ｔＪ７Ｉ
＃！極めて小さいため、その流れ性は速度分布ＶＧのプ
ラグ流となる。従って、該洗浄材料Ｇを通路１２．１３
に送り込み流通させることにより通路１２．１３全体が
短時間で円滑に洗浄材料Ｇと入れ替わる。Since the fiber material is dispersed and mixed between the polypropylene particles, when melting and flowing, the friction between the fiber material and the polypropylene particles and between the fiber material particles and the inner wall surface of the pipe is tJ7I.
#! Since it is extremely small, its flowability becomes a plug flow with a velocity distribution of VG. Therefore, the cleaning material G is passed through the passage 12.13.
By feeding and circulating the cleaning material G, the entire passage 12, 13 is smoothly replaced with cleaning material G in a short time.
続いて、前記成形材料Ｅ（ポリプロピレン（茶色））と
は色の異なるペレット状のポリプロピレン（ねずみ色）
材料（以下、第２の成形材料Ｆという）４に９をホッパ
ーに投入し、温度２００’ＣＣ加執溶融して６０間で通
路を流通させることにより通路１２．１３に滞留してい
る洗浄材料Ｇを成形機外に排出して、ｉｍ路１２．１３
内に成形材料Ｆが入れ替わる。Next, pellet-shaped polypropylene (gray color) different in color from the molding material E (polypropylene (brown))
Materials (hereinafter referred to as second molding materials F) 4 to 9 are charged into a hopper, melted at a temperature of 200'CC, and circulated through the passages at a temperature of 60°C to remove the cleaning material that remains in the passages 12 and 13. G is discharged to the outside of the molding machine, and im path 12.13
The molding material F is replaced inside.
この場合、＄２の成形材料Ｆの流れ性は、＠６−す図に
示す速度分布ＶＦの非ニユートン流であり１通路に滞留
している洗浄材料Ｇの流れ性は前述のようにプラグ流Ｖ
Ｇであるため通路は比較的円滑に竿２の成形材料Ｆと入
れ替わる。In this case, the flowability of the molding material F at $2 is a non-Newtonian flow with a velocity distribution VF shown in the diagram @6, and the flowability of the cleaning material G staying in one passage is a plug flow as described above. V
G, the passage is relatively smoothly replaced with the molding material F of the rod 2.
このようにして茶色のポリプロピレン成形からねずみ色
のポリプロピレン成形への色替えが完了する。In this way, the color change from brown polypropylene molding to gray polypropylene molding is completed.
次に、分離している一対の型１４．１５をセットしたの
ち、再び前記成形材料Ｆをホッパー１１に必要量投入し
て、ねずみ色のポリプロピレン成形品の成形を開始する
。Next, after setting the pair of separate molds 14 and 15, the required amount of the molding material F is again put into the hopper 11, and molding of a gray polypropylene molded product is started.
第１表は、前記した本発明の実施例における洗浄材料の
使用量、成形材料の無駄な消費量、入れ替え時間を従来
例との対比で示したものである。Table 1 shows the amount of cleaning material used, the amount of wasteful consumption of molding material, and the replacement time in the above-described embodiment of the present invention in comparison with the conventional example.
なお、＠１表において、従来例の（１）は洗浄材料を使
用しない場合、（２）は洗浄材料として「タイクリーン
」（タイホウ工業■製の商品名）を用いた場合を示す。In Table @1, conventional example (1) shows the case where no cleaning material was used, and (2) shows the case where "Tie Clean" (trade name manufactured by Taiho Kogyo ■) was used as the cleaning material.
従来例（１） 、 （２）における成形材料は本発明の
実施例と全く同じものを用いた。該第１表から明らかな
ように、洗浄材料の使用１ｉＦｉ木発明と従来例とでほ
ぼ同じであるが、成形材料の無駄な消費１１１２本発明
では従来の１５ｑ／６程度に低減され、かつき材料の入
れ替え時間は本発明＋は従来の２０’Ｊ！１１ □□The molding materials used in Conventional Examples (1) and (2) were exactly the same as those used in the Examples of the present invention. As is clear from Table 1, the use of cleaning materials is almost the same between the iFi wood invention and the conventional example, but the wasteful consumption of molding materials is reduced to about 15q/6 in the present invention, and the cleaning The material replacement time is 20'J compared to the present invention+ compared to the conventional method! 11 □□
第１図は、一般の熱可塑性樹脂を加熱溶融して円形管内
を流通させたときの速度分布を示す断面図。第２］−図
は、管内に滞留する第１の成形材料や、□２ｃＱ′え醗
□工よ７□、オ、。。４度号布を示す＠１川と同様な断
面図、第２−ｂ図は、第２−８図の状態から第２の成形
材料をある程変の量流通させたときの管内の洗浄状態を
示す断面図、＠２−ｅ図は従来の洗浄材料によって滞と
同様な断面図、第３−ｂＰ３！１け第２の成形材料によ
って本′鵬明の洗浄材料を排出する場合の第３−ａ図と
同様な断面図、第４図は熱可塑性樹脂押出成形機の全体
概略断面図である。
Ｅ・・・・＠１の成形材料、Ｆ・・・・第２の成形材料
。
Ｇ・・・・洗浄材料、ＶＥ、ＶＦ、ＶＧ・・・・成形材
料Ｅ、成形材料Ｆ、洗浄材料Ｇのそれぞれの速度分布、
、１１−−−−ホッパー、１２・・・・スクリューシリ
ンダー内部、１３・・・・ノズル内部、１４．１５・・
・・一対の成形型。
特許出願人
第１図 第２−＜回部
、−２（８） 第３２０第
２−ｋｍ ＩＩＩＬ３
・Ｌ図＠＋図
ｌFIG. 1 is a cross-sectional view showing the velocity distribution when a general thermoplastic resin is heated and melted and passed through a circular tube. 2nd] - The figure shows the first molding material staying in the pipe, □2cQ', and 7□, E. . Figure 2-b, a cross-sectional view similar to the @1 river showing the 4th grade cloth, shows the cleaning state inside the pipe when a somewhat different amount of the second molding material is passed from the state shown in Figure 2-8. Figure @2-e is a cross-sectional view similar to the one in which the conventional cleaning material is discharged, and Figure 3-bP3! FIG. 4 is a cross-sectional view similar to that shown in FIG. E...@1 molding material, F...2nd molding material. G...Cleaning material, VE, VF, VG...Velocity distribution of each of molding material E, molding material F, and cleaning material G,
, 11---Hopper, 12... Inside the screw cylinder, 13... Inside the nozzle, 14.15...
...A pair of molds. Patent Applicant Figure 1 Figure 2-<Circle, -2 (8) No. 320 No. 2-km IIIL3
・L diagram @+ diagram l
Claims (2)
ト、ポリエチレン、ポリスチレン、ＡＢＣ＠脂。 囲で混合したことを特徴とする熱可塑性樹脂成形機に用
いる洗浄材料。(1) Polypropylene, ethylene vinyl acetate, polyethylene, polystyrene, ABC@fat. A cleaning material used in a thermoplastic resin molding machine characterized by being mixed in a vacuum.
ＩＩＩ材料により成′形加工したのち、ポリ−２０□ｅ
レン、エチレンビニールアセテート□、ポリ□エチレン
、プリスチレン、ＡＢ８樹脂、ＡＥ８瘤□ｌ！’、Ａる
洗浄材料を成形機の溶融樹脂の通路に流通さ□せて通路
内の滞留樹脂を洗浄することを特徴とする熱可塑性樹脂
成形機の洗浄方法。(2) Predetermined thermoplasticity f! by a thermoplastic resin molding machine.
After molding with III material, poly-20□e
Len, ethylene vinyl acetate□, poly□ethylene, pristyrene, AB8 resin, AE8 lump□l! A method for cleaning a thermoplastic resin molding machine, characterized in that cleaning material A is passed through a molten resin passage of the molding machine to clean residual resin in the passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12237382A JPS5912808A (en) | 1982-07-14 | 1982-07-14 | Material and method for cleaning thermoplastic resin molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12237382A JPS5912808A (en) | 1982-07-14 | 1982-07-14 | Material and method for cleaning thermoplastic resin molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5912808A true JPS5912808A (en) | 1984-01-23 |
Family
ID=14834237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12237382A Pending JPS5912808A (en) | 1982-07-14 | 1982-07-14 | Material and method for cleaning thermoplastic resin molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5912808A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6285531U (en) * | 1985-11-14 | 1987-06-01 | ||
| US4818604A (en) * | 1987-03-27 | 1989-04-04 | Sub-Tank Renewal Systems, Inc. | Composite board and method |
| JP2009039863A (en) * | 2007-08-06 | 2009-02-26 | Daicel Polymer Ltd | Resin composition for washing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429351A (en) * | 1977-08-09 | 1979-03-05 | Asahi Chem Ind Co Ltd | Purging compound |
| JPS55113517A (en) * | 1979-02-23 | 1980-09-02 | Nippon Carbide Ind Co Ltd | Resin composition for cleaning metallic mold |
-
1982
- 1982-07-14 JP JP12237382A patent/JPS5912808A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429351A (en) * | 1977-08-09 | 1979-03-05 | Asahi Chem Ind Co Ltd | Purging compound |
| JPS55113517A (en) * | 1979-02-23 | 1980-09-02 | Nippon Carbide Ind Co Ltd | Resin composition for cleaning metallic mold |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6285531U (en) * | 1985-11-14 | 1987-06-01 | ||
| US4818604A (en) * | 1987-03-27 | 1989-04-04 | Sub-Tank Renewal Systems, Inc. | Composite board and method |
| JP2009039863A (en) * | 2007-08-06 | 2009-02-26 | Daicel Polymer Ltd | Resin composition for washing |
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