JPH0581406B2 - - Google Patents
Info
- Publication number
- JPH0581406B2 JPH0581406B2 JP63059810A JP5981088A JPH0581406B2 JP H0581406 B2 JPH0581406 B2 JP H0581406B2 JP 63059810 A JP63059810 A JP 63059810A JP 5981088 A JP5981088 A JP 5981088A JP H0581406 B2 JPH0581406 B2 JP H0581406B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- container
- granular
- mixing
- wall
- 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
- 239000011347 resin Substances 0.000 claims description 63
- 229920005989 resin Polymers 0.000 claims description 63
- 238000002156 mixing Methods 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 3
- 239000002994 raw material Substances 0.000 description 18
- 239000000843 powder Substances 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 5
- 229920006351 engineering plastic Polymers 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/50—Mixing receptacles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
〔産業上の利用分野〕
本発明は粒状樹脂の混合方及びその装置に係
り、特に、プラスチツク製造の前処理において、
種類を異する粒状（又は粉状）の樹脂同士或いは
樹脂と可塑剤のような添加物等とを容器内で混合
する粒状樹脂の混合方法及びその装置に関する。
〔従来技術〕
エンジユニアリングプラスチツク等の製造の前
処理として、粒状又は粉状の樹脂と液状又は粉状
の可塑剤とを混合する場合、又は２種類以上の樹
脂を混合する場合にはバツチ方式の混合容器が使
用されている。
従来のこの種の混合装置は、円筒状の混合容器
と回転羽根を有した攪拌機とから構成されてい
る。混合用の各樹脂原料は粉状或いは粒状に形成
されており、秤量された後に混合容器内に供給さ
れる。次に攪拌機の回転羽根を回転させると、樹
脂原料は容量の中央部から回転羽根の軸方向に沿
つて流下し、流下した樹脂原料は容器内壁の底面
に沿つて移動し、内壁側面を上昇する。そして、
回転羽根の上方には固定板が設けられ、上昇した
樹脂原料は容器の中央部に寄せられ、再び回転羽
根の軸に沿つて流下される。これを繰り返すこと
によつて、樹脂原料の粒子同士が互いに摺接或い
は置換して混合される。又、このような樹脂原料
の攪拌は、その原料粒子に大きな運動エネルギー
が付与されるため、回転羽根の回転周速は略
20m／ｓ程度で行われる。
〔発明が解決しようとする課題〕
しかしながら、混合原料である粒状（又は粉
状）の樹脂素材はエンジユニアリングプラスチツ
ク等の比較的融点が低い樹脂を主体に使用してい
る。このため、粒状（又は粉状）の樹脂同士は混
合装置での急速な攪拌による摺接で摩擦熱を発生
させ、その熱によつて、軟化或いは溶融し、混合
容器内壁に付着する不具合がある。混合容器等に
樹脂等の付着が生じると、粉状或いは液状の添加
物の混合割合いが供給時に秤量した割合いと相違
する問題が生じる。又、コンタミネーシヨンを防
止するため、混合操作毎に容器内壁の清掃が必要
となり、内壁に付着した樹脂の融着物は水洗等で
は簡単に除去できず、内壁の清掃のために多くの
作業員の手作業による手間を要する。
本発明はこのような事情に鑑みて成されたもの
で、粒状樹脂の混合時にその樹脂原料が容器内壁
面に付着しない粒状樹脂の混合方法及びその装置
を提供することを目的としている。
〔課題を解決するための手段〕
本発明は前記目的を達成するために、粒状又は
粉状樹脂と、前記樹脂と形状又は種類を異にする
樹脂、或いは液状又は粉状の添加物と、を容器内
で混合する粒状樹脂の混合方法に於いて、前記容
器の内壁面を霜又は氷層で覆つた後に、前記粒状
樹脂の混合をすることを特徴とする。
〔作用〕
本発明に係る粒状樹脂の混合方法及びその装置
によれば、容器の内壁面には霜或いは氷層が形成
されるため、粒状又は粉状の樹脂は直接容器壁面
に接触することがないため、摩擦力を小さくする
ことができる。また、霜或いは氷層の一部が融解
した場合には融解熱によつて樹脂の表面が冷やさ
れるため、樹脂は溶解や軟化しにくくなり、更に
霜或いは氷層の一部が融解してその水分が粒状樹
脂の表面の濡れ膜として摩擦力を減少させる。こ
のため、容器の内壁面には粒状樹脂等が融着する
虞がなく、混合操作毎の容器内壁面の清掃作業が
簡単にできる。
〔実施例〕
以下添付図面に従つて本発明に係る粒状樹脂の
混合方法及びその装置の好ましい実施例を詳説す
る。
第１図は本発明に係る粒状樹脂の混合装置の説
明図である。第１図に示すように混合装置の容器
１０は容器壁が中空形成されたジヤツケツト構造
になつており、容器壁の内部１２には冷却液（冷
媒）が送流される。容器壁内１２の冷却液はパイ
プ１４を介して貯留タンク１６内に送られ、タン
ク１６の冷却液はクーラ１８によつて０℃以下に
冷却された後、冷却ポンプ２０によつてパイプ２
２を介して再び容器壁内１２に送られる。冷却液
はブライン或いは不凍液等が用いられ、クーラ１
８によつて０℃以下に冷却されるが、好ましくは
−５℃程度に冷却されて容器壁１２内に送流され
る。この冷却液の送流により、容器１２の内壁面
１０Ａは０℃以下に冷却される。
又、容器１０の側面及び底面を構成する内壁面
１０Ａには、噴霧装置２４のノズル２６から水が
噴霧され霜或いは氷層が形成される。噴霧装置２
４はボンベ２８からの圧縮エアがホース３０を介
して供給されると共に、圧縮エアのベンチユリー
作用によつて水槽３２からの水を少量吸引し、ノ
ズル２４より水を噴霧している。尚、ノズル２６
から水を噴霧する代わりに高湿エア、即ち加湿さ
れたエアを容器内壁面１０Ａに吹き付けるか、も
しくは大気中の湿分を利用して内壁面１０Ａに霜
或いは氷層を形成してもよい。
容器１０の底面中央部には挿通孔３４が形成さ
れ、挿通孔３４には攪拌装置の回転軸３６が挿通
され、回転軸３６の上端には回転羽根３８，４
０，…が取付けられる。
又、容器１０には蓋４２が取付けられ、蓋４２
は枢支軸４４を介して回動可能に取付けられ、容
器１０の外周壁に取付けられたシリンダ４６によ
つて開閉される。蓋４２には混合用原料を投入す
るための供給口４８，４８，５０が形成される。
又、蓋４２の内側には固定ブレード５２が取付け
られ、固定ブレード５２は攪拌される混合原料を
容器１０の中央部に押しやる作用をしている。
前記の如く構成された粒状樹脂の混合方法及び
その装置によれば、粉状或いは粒状に形成された
樹脂原料を容器１０に添加する前に、予め、容器
内壁面１０Ａはクーラ１８からの約−５℃程度の
冷却液によつて約−４℃以下に冷却される。そし
て噴霧装置２４によつてノズル２６から水が噴霧
され、容器内壁面１０Ａには霜或いは氷層が形成
される。霜或いは氷層が形成された後、蓋４２が
シリンダ４６によつて閉じられ、原料である粒状
（又は粉状）の樹脂及び可塑剤等の添加物が供給
口４８，４８，５０から容器１０内に供給され
る。
次に回転羽根３８，４０が回転され、供給され
た原料は回転羽根によつて容器１０中央部から回
転軸３６に沿つて流下し、容器１０の底面壁に沿
つて流動し、更に容器１０の内周側壁に沿つて上
昇する。そして、上昇した原料は蓋４２に取付け
られたブレード５２によつて中央部に集められた
後に再び流下される。このように、円滑に混合攪
拌され、エンジユニアプラスチツク製造のための
前処理段階がなされる。
この場合、原料の粉体或いは粉体の樹脂同士は
攪拌によつて摩擦が生じ、その摩擦熱によつて軟
化或いは溶融され、容器内壁１０Ａへの粘着性が
増加する。しかし、容器内壁１０Ａには霜又は氷
層が形成されるため、樹脂の付着が防止される。
このような樹脂の付着が阻止されるのは、直接容
器内壁１０Ａに樹脂が接触せず、霜或いは氷層と
の接触によつて冷却され、粘着性が低下するから
である。又、霜或いは氷層が一部溶解した場合に
は、粒状或いは粉状の樹脂の表面に濡れ膜が生じ
樹脂同士の摩擦を減少する。
次に本発明に係る粒状樹脂の混合方法及びその
装置によつて混合した場合と、従来の混合方法及
びその装置によつて混合した場合の比較試験を行
つた。
混合原料は、熱可塑性エンジユニアプラスチツ
ク製造用原料として粒状物を２種類、粉状物を４
種類、液状の可塑剤１種類を混合することとし
た。又、混合時間は１〜２分間とし、羽根周速は
16m／ｓ（1100rpm）とした。これらの混合条件
で、容器１０の樹脂の付着結果を１表に示す。
[Industrial Application Field] The present invention relates to a method of mixing granular resin and an apparatus therefor, particularly in pre-treatment for plastic manufacturing.
The present invention relates to a method and apparatus for mixing granular resins in which different types of granular (or powdered) resins or resins and additives such as plasticizers are mixed in a container. [Prior art] Batch method is used when mixing granular or powdered resin and liquid or powdered plasticizer, or when mixing two or more types of resin, as a pretreatment for manufacturing engineering plastics, etc. Mixing containers are used. A conventional mixing device of this type includes a cylindrical mixing container and an agitator having rotating blades. Each resin raw material for mixing is formed into powder or granules, and is fed into a mixing container after being weighed. Next, when the rotating blade of the stirrer is rotated, the resin raw material flows down from the center of the capacity along the axial direction of the rotating blade, and the flowing resin raw material moves along the bottom of the inner wall of the container and rises up the side of the inner wall. . and,
A fixed plate is provided above the rotary vane, and the rising resin raw material is gathered at the center of the container, and then flowed down again along the axis of the rotary vane. By repeating this, the particles of the resin raw material slide into or replace each other and are mixed. In addition, since such agitation of resin raw materials imparts large kinetic energy to the raw material particles, the rotational peripheral speed of the rotary blade is approximately
This is done at a speed of about 20m/s. [Problems to be Solved by the Invention] However, the granular (or powder) resin material that is the mixed raw material mainly uses resins with a relatively low melting point, such as engineering plastics. For this reason, the granular (or powder) resins generate frictional heat when they slide against each other due to rapid stirring in the mixing device, and this heat causes them to soften or melt, causing problems such as adhesion to the inner wall of the mixing container. . If resin or the like adheres to a mixing container or the like, a problem arises in that the mixing ratio of powdered or liquid additives differs from the ratio weighed at the time of supply. In addition, to prevent contamination, it is necessary to clean the inner wall of the container after each mixing operation, and the fused resin adhering to the inner wall cannot be easily removed by washing with water, so cleaning the inner wall requires many workers. It requires a lot of manual labor. The present invention was made in view of the above circumstances, and an object of the present invention is to provide a method and apparatus for mixing granular resin in which the resin raw material does not adhere to the inner wall surface of a container during mixing of granular resin. [Means for Solving the Problems] In order to achieve the above object, the present invention comprises a granular or powdered resin, a resin different in shape or type from the resin, or a liquid or powdered additive. The method for mixing granular resin in a container is characterized in that the granular resin is mixed after the inner wall surface of the container is covered with a layer of frost or ice. [Function] According to the method and apparatus for mixing granular resin according to the present invention, frost or an ice layer is formed on the inner wall surface of the container, so that the granular or powdered resin does not come into direct contact with the container wall surface. Therefore, the frictional force can be reduced. Additionally, when a portion of the frost or ice layer melts, the heat of fusion cools the surface of the resin, making it difficult for the resin to melt or soften. Moisture reduces the frictional force as a wet film on the surface of the granular resin. Therefore, there is no possibility that particulate resin or the like will be fused to the inner wall surface of the container, and the inner wall surface of the container can be easily cleaned after each mixing operation. [Example] Preferred embodiments of the granular resin mixing method and device according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an explanatory diagram of a granular resin mixing apparatus according to the present invention. As shown in FIG. 1, a container 10 of the mixing device has a jacket structure with a hollow container wall, and a cooling liquid (refrigerant) is flowed into the interior 12 of the container wall. The cooling liquid in the container wall 12 is sent into the storage tank 16 via the pipe 14, and the cooling liquid in the tank 16 is cooled to below 0°C by the cooler 18, and then transferred to the pipe 2 by the cooling pump 20.
2 into the container wall 12 again. Brine or antifreeze is used as the coolant, and cooler 1
8 to below 0°C, preferably to about -5°C, and then sent into the container wall 12. By this flow of cooling liquid, the inner wall surface 10A of the container 12 is cooled to 0° C. or lower. Furthermore, water is sprayed from the nozzle 26 of the spray device 24 to form a frost or ice layer on the inner wall surface 10A constituting the side and bottom surfaces of the container 10. Spray device 2
4 is supplied with compressed air from a cylinder 28 through a hose 30, sucks a small amount of water from a water tank 32 by the ventilating action of the compressed air, and sprays water from a nozzle 24. In addition, nozzle 26
Instead of spraying water, high-humidity air, that is, humidified air, may be sprayed onto the inner wall surface 10A of the container, or moisture in the atmosphere may be used to form a frost or ice layer on the inner wall surface 10A. An insertion hole 34 is formed in the center of the bottom surface of the container 10, and a rotation shaft 36 of a stirring device is inserted through the insertion hole 34.
0,... are attached. Further, a lid 42 is attached to the container 10.
is rotatably attached via a pivot shaft 44 and opened and closed by a cylinder 46 attached to the outer peripheral wall of the container 10. Supply ports 48, 48, and 50 for introducing raw materials for mixing are formed in the lid 42.
Further, a fixed blade 52 is attached to the inside of the lid 42, and the fixed blade 52 functions to push the mixed raw material being stirred to the center of the container 10. According to the method and apparatus for mixing granular resin configured as described above, before adding the powdered or granular resin raw material to the container 10, the inner wall surface 10A of the container is preliminarily heated to about - It is cooled to about -4°C or lower by a cooling liquid of about 5°C. Then, water is sprayed from the nozzle 26 by the spray device 24, and a frost or ice layer is formed on the inner wall surface 10A of the container. After the frost or ice layer is formed, the lid 42 is closed by the cylinder 46, and the raw material granular (or powder) resin and additives such as plasticizers are fed into the container 10 from the supply ports 48, 48, 50. supplied within. Next, the rotary vanes 38 and 40 are rotated, and the supplied raw material flows down from the center of the container 10 along the rotation axis 36 by the rotary vanes, flows along the bottom wall of the container 10, and further flows into the container 10. It rises along the inner peripheral side wall. Then, the rising raw material is collected in the center by a blade 52 attached to the lid 42 and then flowed down again. In this way, the mixture is smoothly mixed and stirred, and a pretreatment step for manufacturing engineering plastics is performed. In this case, friction occurs between the raw material powder or the powdered resins as they are stirred, and the frictional heat softens or melts them, increasing the adhesion to the inner wall 10A of the container. However, since a frost or ice layer is formed on the inner wall 10A of the container, adhesion of the resin is prevented.
The reason why such adhesion of the resin is prevented is that the resin does not directly contact the inner wall 10A of the container, but is cooled by contact with the frost or ice layer, and the adhesiveness is reduced. Furthermore, when the frost or ice layer partially melts, a wet film is formed on the surface of the granular or powdered resin, reducing the friction between the resins. Next, a comparative test was conducted between a case where the granular resin was mixed using the mixing method and apparatus according to the present invention and a case where the granular resin was mixed using the conventional mixing method and apparatus. The mixed raw materials include two types of granular materials and four types of powder materials as raw materials for manufacturing thermoplastic engineering plastics.
It was decided to mix one type of liquid plasticizer. In addition, the mixing time is 1 to 2 minutes, and the blade circumferential speed is
The speed was set at 16 m/s (1100 rpm). Table 1 shows the results of resin adhesion in the container 10 under these mixing conditions.
以上説明したように本発明に係る粒状樹脂の混
合方法及びその装置によれば、容器内壁面を冷却
して、その内壁面に霜或いは氷層を形成したの
で、混合操作によつて容器内壁面に樹脂等が融着
する虞がないため、容器の清掃が簡単にできる。
As explained above, according to the method and device for mixing granular resin according to the present invention, the inner wall surface of the container is cooled and a frost or ice layer is formed on the inner wall surface. Since there is no risk of resin etc. being fused to the container, the container can be cleaned easily.
第１図は本発明に係る粒状樹脂の混合装置の説
明図である。
１０……混合装置の容器、１２……混合容器壁
内、１０Ａ……容器壁面、１８……クーラ、２４
……噴霧装置、３４……攪拌機の回転軸、３８，
４０……回転羽根、４２……蓋、５２……固定ブ
レード。
FIG. 1 is an explanatory diagram of a granular resin mixing apparatus according to the present invention. DESCRIPTION OF SYMBOLS 10... Container of mixing device, 12... Inside wall of mixing container, 10A... Container wall surface, 18... Cooler, 24
... Spraying device, 34 ... Rotating shaft of stirrer, 38,
40... Rotating blade, 42... Lid, 52... Fixed blade.
Claims (1)
類を異にする樹脂、或いは液状又は粉状の添加物
と、を容器内で混合する粒状樹脂の混合方法に於
いて、 前記容器の内壁面を霜又は氷層で覆つた後に、
前記粒状樹脂の混合をすることを特徴とした粒状
樹脂の混合方法。 ２ 粒状又は粉状樹脂と、前記樹脂と形状又は種
類を異にする樹脂或いは液状又は粉状の添加物
と、を容器内で混合する粒状樹脂の混合装置に於
いて、 前記樹脂を入れる容器と、容器内に設けられた
樹脂を混合する攪拌機と、前記容器の内壁面を０
℃以下に冷却し、該内壁面に霜又は氷層を形成す
る冷却器と、から構成したことを特徴とする粒状
樹脂の混合装置。 ３ 前記容器の内壁に向けて高湿空気或いは水を
噴出するノズルを設けることを特徴とした請求項
第２項記載の粒状樹脂の混合装置。[Claims] 1. A granular resin mixing method in which granular or powdered resin is mixed with a resin having a different shape or type from the resin, or a liquid or powdered additive in a container. , after covering the inner wall surface of the container with a layer of frost or ice,
A method for mixing granular resins, comprising mixing the granular resins. 2. In a granular resin mixing device that mixes granular or powdered resin and a resin having a shape or type different from that of the resin, or a liquid or powdered additive in a container, a container containing the resin; , a stirrer installed in a container to mix the resin, and an inner wall surface of the container
1. A mixing device for granular resin, comprising: a cooler that cools the resin to a temperature below .degree. C. and forms a layer of frost or ice on the inner wall surface. 3. The granular resin mixing device according to claim 2, further comprising a nozzle for spouting high-humidity air or water toward the inner wall of the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63059810A JPH01232003A (en) | 1988-03-14 | 1988-03-14 | Mixing of granular resin and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63059810A JPH01232003A (en) | 1988-03-14 | 1988-03-14 | Mixing of granular resin and its device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01232003A JPH01232003A (en) | 1989-09-18 |
| JPH0581406B2 true JPH0581406B2 (en) | 1993-11-12 |
Family
ID=13123968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63059810A Granted JPH01232003A (en) | 1988-03-14 | 1988-03-14 | Mixing of granular resin and its device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01232003A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2591118B2 (en) * | 1988-11-17 | 1997-03-19 | 日立プラント建設株式会社 | Method and apparatus for mixing granular resin |
| CN102773938A (en) * | 2012-07-30 | 2012-11-14 | 昆山科信橡塑机械有限公司 | Continuous internal mixer |
| AT514796B1 (en) * | 2013-09-27 | 2015-04-15 | Lisec Austria Gmbh | Method and tool for machining materials |
-
1988
- 1988-03-14 JP JP63059810A patent/JPH01232003A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01232003A (en) | 1989-09-18 |
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