JPS6230888B2 - - Google Patents
Info
- Publication number
- JPS6230888B2 JPS6230888B2 JP2395680A JP2395680A JPS6230888B2 JP S6230888 B2 JPS6230888 B2 JP S6230888B2 JP 2395680 A JP2395680 A JP 2395680A JP 2395680 A JP2395680 A JP 2395680A JP S6230888 B2 JPS6230888 B2 JP S6230888B2
- Authority
- JP
- Japan
- Prior art keywords
- chips
- chip
- level
- stirring blades
- level meter
- 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
Links
- 238000003756 stirring Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 12
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 1
- 230000004927 fusion Effects 0.000 description 11
- 238000002425 crystallisation Methods 0.000 description 10
- 230000008025 crystallization Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- 241000555825 Clupeidae Species 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 235000019512 sardine Nutrition 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Drying Of Solid Materials (AREA)
Description
【発明の詳細な説明】
本発明はポリアミド、ポリエステル等の熱可塑
性合成重合体のチツプを連続的に加熱する装置、
特にポリエステルチツプを予熱又を加熱して予備
結晶化を行う加熱装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an apparatus for continuously heating chips of thermoplastic synthetic polymers such as polyamide and polyester;
In particular, the present invention relates to a heating device for pre-crystallizing polyester chips by preheating or heating them.
ポリエステルチツプの乾燥又は固相重合を行う
際に通常90℃ないし130℃以上の温度をかけると
チツプ相互の融着が起る。この融着現象は溶融重
合後にカツテイング等により形成したチツプの表
面が結晶化していないために起るものであり、表
面が結晶化すればチツプ相互の融着は防ぐことが
出来る。 When polyester chips are dried or subjected to solid phase polymerization, if a temperature of 90°C to 130°C or higher is usually applied, the chips will fuse together. This fusion phenomenon occurs because the surfaces of the chips formed by cutting or the like after melt polymerization are not crystallized, and if the surfaces are crystallized, mutual fusion of the chips can be prevented.
従つてあらかじめ何らかの方法でチツプの表面
を予備結晶化しておく必要があるが、本発明者の
経験によるとチツプの表面を予備結晶化する際い
かなる方法においてもガラス転位点以上、特に90
〜130℃以上の温度になると融着を避けることが
難しい。 Therefore, it is necessary to pre-crystallize the surface of the chip by some method in advance, but according to the experience of the present inventor, any method used to pre-crystallize the surface of the chip does not require a crystallization temperature higher than the glass transition point, especially 90
It is difficult to avoid fusion at temperatures above ~130°C.
一般にチツプの融着といつても様々であり、い
わおこしのような大きな塊状のものになるものか
ら2〜3粒のチツプのものまである。いわおこし
のような大きなかたまりになると以後の工程での
トラブルの原因になるのは明らかであり、又たと
え2粒、3粒でもチツプを最終製品として販売す
る場合は商品価値として著しく低下する。 In general, the fusion of chips varies, ranging from large chunks like sardines to 2-3 chips. It is obvious that large chunks like rock sardines will cause problems in subsequent processes, and if chips are sold as a final product, even if they are only two or three chips, the commercial value will drop significantly.
このため予備結晶化後にチツプを解打或は解砕
機等に通して発生した融着チツプを個々に分離す
る必要がある。しかるにこのような解砕機は通常
数個程度が一体となつた融着チツプの場合には効
果的であるが、塊状のように大きなものから2〜
3粒の小さいものまでの種々の大きさの融着チツ
プが個々のチツプ中に混在するようなときは分離
効率が悪く操業設備として実用的でない。 For this reason, it is necessary to crush the chips after preliminary crystallization or pass them through a crusher or the like to separate the fused chips individually. However, such a crusher is usually effective for fused chips that are made up of several chips, but it is effective for crushing chips that are made up of several fused chips.
When fused chips of various sizes up to 3 grains are mixed in each chip, the separation efficiency is poor and it is not practical as an operational equipment.
本発明者はかかる立場からポリエステルチツプ
を連続的に予備結晶化するための加熱装置につい
て種々検討を行つた結果、チツプ表面が結晶化し
ていく際に十分に撹拌が行なわれていれば、融着
チツプの発生が少なくかつその結合数が数粒程度
のものが大多数を占めるが、撹拌の程度が十分で
ない場合には塊状の融着チツプが発生し易すくか
つ結晶化がある程度進行した後では融着チツプの
分離が容易でないことを見い出し本発明に至つた
のである。 The inventor of the present invention has conducted various studies on heating equipment for continuously pre-crystallizing polyester chips from this standpoint, and has found that if sufficient stirring is performed while the chip surface is crystallized, fusion will occur. The majority of chips have a small number of chips and only a few chips, but if the degree of stirring is not sufficient, lumps of fused chips are likely to occur, and after crystallization has progressed to a certain extent. It was discovered that it is not easy to separate fused chips, leading to the present invention.
すなわち、本発明は上部に供給口、下部に排出
口を有しかつ上下方向に多段に撹拌翼を備えた容
器で熱可塑性重合体チツプを連続的もしくは半連
続的に加熱する装置において、容器内の上部位置
にチツプ供給手段と連動しチツプレベルを制御す
るレベル計を配設するとともに、該レベル計近傍
位置の撹拌翼を他位置より上下設置間隔を小さく
なるように設けたことを特徴とするものである。 That is, the present invention provides an apparatus for continuously or semi-continuously heating thermoplastic polymer chips in a container having a supply port at the top and a discharge port at the bottom and equipped with stirring blades in multiple stages in the vertical direction. A level meter for controlling the chip level in conjunction with the chip supply means is disposed at the upper position of the device, and stirring blades near the level meter are provided at a vertical interval smaller than other positions. It is.
以下、本発明を図面に基づいて説明する。図は
本発明の実施例を示す概略断面図である。図にお
いて、1は縦型円筒状の容器本体で、その上端部
には供給口2、下端部には排出口3が設けられ、
更に上部位置にレベル計8が取付けられている。
レベル計8は供給口2と連結したロータリーフイ
ーダ10のモータ11と連動し容器中のチツプレ
ベルを調節する。すなわちチツプが検出端9位置
より低くなるとモータ11が作動しチツプを容器
本体1に供給し、検出端9の位置より高くなると
モータ11を停止しチツプの供給を中断する。こ
の場合上、下2点位置でオン、オフ制御等を行う
ようにしてもよい。又、容器本体1の軸心方向に
は図示しないモータによつて駆動する回転軸4が
配設されている。この回転軸4は中空軸に形成さ
れており、上端部が回転接手等を介して熱風の配
管12と連結され、更に下端部は円錐状に形成さ
れた熱風の吹出口5が設けられている。6は回転
軸4に取付けられた撹拌翼、7は容器本体1に取
付けられた邪魔板である。これら撹拌翼6と邪魔
板7はレベル検出端9の近傍位置では取付(設
置)密度が他位置より高く、即ち上下方向の取付
間隔が小さくなつている。ここで撹拌翼6を密に
取付ける範囲は運転条件により多少変わるが、容
器本体1に供給されたチツプの表面がある程度
(深さ)結晶化する時間に対応する高さを要す
る。融着チツプの発生はチツプ表面からの結晶化
距離、即ち深さが大きくなるに従つて少なくな
り、ポリエステルの場合20〜40μ以上になるとほ
ぼ230℃までは殆どチツプの融着はなくなり、又
これに要する加熱時間は電熱、熱媒による間接加
熱、加熱ガス、スチームによる直接加熱等によつ
て異なるが、大体数秒から数十分を必要とする。
従つてチツプの供給、排出がバランスし常にレベ
ル検出端9の上下位置前後でチツプレベルが一定
状態に保持されるような運転を行う場合にはその
レベル位置からチツプが上記20〜40μの深さに結
晶化するに要する時間に対応する距離の間を撹拌
翼6等の取付密度を大きくすればよい。又一定時
間毎に一定量のチツプは供給、排出を行うような
場合にも(この場合は本発明に言う連続方式であ
る)所定の結晶化に要する時間に応じて容器上部
位置の撹拌翼取付密度を大きくすればよい。図に
示す本実施例はほぼ後者の方法によつて運転を行
うものであり、以下にその作用について説明す
る。尚、13は熱風の排出用ノズル、14は加熱
器、15は熱風循環用のポンプである。貯槽又は
ホツパー16に貯られているポリエステルチツプ
はロータリーフイーダ10によつて取出され供給
口2から容器本体1に供給される。容器本体1中
のチツプがレベル計8の検出端9によつて検知さ
れる位置に達するとその信号によりロータリーフ
イーダ10のモータ11が停止しチツプの供給は
停止される。一方、ポンプ15、加熱器14等に
よつて発生する加熱ガスが熱風配管12を通つて
回転接手等から中空の回転軸4に入り、その先端
の吹出口5から四方に分散されてチツプを直接加
熱しながら上昇し、排出ノズル13を通つて熱風
配管12から再びポンプ15、加熱器14に至る
循環系を形成しており、この加熱ガスによつてチ
ツプは100〜180℃に加熱される。同時に撹拌翼6
の回転により伝熱を良くしかつチツプの温度斑の
発生を防止している。 Hereinafter, the present invention will be explained based on the drawings. The figure is a schematic sectional view showing an embodiment of the present invention. In the figure, 1 is a vertical cylindrical container body, with a supply port 2 at its upper end and a discharge port 3 at its lower end.
Furthermore, a level meter 8 is installed at the upper position.
The level meter 8 operates in conjunction with the motor 11 of the rotary feeder 10 connected to the supply port 2 to adjust the chip level in the container. That is, when the tip becomes lower than the position of the detection end 9, the motor 11 is operated to supply the tip to the container body 1, and when the tip becomes higher than the position of the detection end 9, the motor 11 is stopped and the supply of chips is interrupted. In this case, on/off control, etc. may be performed at the upper and lower two point positions. Further, a rotating shaft 4 driven by a motor (not shown) is disposed in the axial direction of the container body 1. The rotating shaft 4 is formed into a hollow shaft, and its upper end is connected to a hot air pipe 12 via a rotary joint or the like, and its lower end is provided with a hot air outlet 5 formed in a conical shape. . 6 is a stirring blade attached to the rotating shaft 4, and 7 is a baffle plate attached to the container body 1. These stirring blades 6 and baffle plates 7 are mounted (installed) densely at a position near the level detection end 9 than at other positions, that is, the mounting interval in the vertical direction is small. Here, the range in which the stirring blades 6 are closely attached varies somewhat depending on the operating conditions, but it requires a height corresponding to the time required for the surface of the chips supplied to the container body 1 to crystallize to a certain extent (depth). The occurrence of fused chips decreases as the crystallization distance from the chip surface, that is, the depth, increases; in the case of polyester, when the temperature exceeds 20 to 40μ, there is almost no fusion of chips until approximately 230℃; The heating time required for this differs depending on whether the method is electric heating, indirect heating using a heating medium, heating gas, direct heating using steam, etc., but generally takes from several seconds to several tens of minutes.
Therefore, when operating in such a way that the supply and discharge of chips are balanced and the chip level is always maintained at a constant state around the upper and lower positions of the level detection terminal 9, the chips will be at a depth of 20 to 40μ from that level position. The mounting density of the stirring blades 6 and the like may be increased over a distance corresponding to the time required for crystallization. Also, in cases where a fixed amount of chips is supplied and discharged at fixed intervals (in this case, it is a continuous method referred to in the present invention), a stirring blade may be installed at the top of the container depending on the time required for the predetermined crystallization. Just increase the density. The present embodiment shown in the figure operates almost by the latter method, and its operation will be explained below. Note that 13 is a nozzle for discharging hot air, 14 is a heater, and 15 is a pump for circulating hot air. Polyester chips stored in a storage tank or hopper 16 are taken out by a rotary feeder 10 and supplied to the container body 1 through a supply port 2. When the chips in the container body 1 reach a position where they are detected by the detection end 9 of the level meter 8, the motor 11 of the rotary leaf feeder 10 is stopped by the signal, and the supply of chips is stopped. On the other hand, heated gas generated by the pump 15, heater 14, etc. passes through the hot air pipe 12, enters the hollow rotating shaft 4 from a rotary joint, etc., is dispersed in all directions from the air outlet 5 at its tip, and is directly applied to the chip. The chip rises while being heated, passes through the discharge nozzle 13, runs from the hot air pipe 12 again to the pump 15, and then to the heater 14, forming a circulation system, and the heated gas heats the chip to 100 to 180°C. At the same time stirring blade 6
The rotation improves heat transfer and prevents temperature unevenness on the chip.
次に図示しない弁等の排出手段によつて所定量
のチツプが容器本体1の排出口3から取出され、
これに応じてチツプレベルが下降するとレベル計
8が働きロータリーフイーダ10が作動を開始し
チツプは元のレベル位置に達するまで供給され
る。ここでレベル計8の検出信号によりロータリ
ーフイーダ10が駆動して停止するまでに入つた
チツプ量をレベルLからHまでとした場合、所要
の結晶化深さ(例えば30μ)に要する時間の方が
次のチツプ排出までの時間より短くなるようにさ
れており、又レベルHからレベルLの間に設けら
れた撹拌翼、邪魔板の取付は他の区域より相互の
間隔が小さくされ、チツプの撹拌が十分に行われ
るようにされている。このため新しく入つたレベ
ルLからレベルHまでのチツプは加熱ガスによつ
て急激に加熱されその表面の結晶化が始まり同時
にチツプ相互間の融着を発生し出すが、この区間
(以下融着ゾーンと言う)は撹拌翼等の取付間隔
(この場合上下方向のみでなく横方向に密にして
もよい)が小さく効果的な撹拌が行われているの
でチツプ相互の融着は少く塊状の融着チツプの発
生はなくなる。尚、融着ゾーンにおいて十分なが
なされていない場合は塊状の融着チツプが多発す
ると共に時によつては融着ゾーンの全体が融着し
排出不能となることもある。又融着ゾーンで生じ
た融着チツプはこの後の撹拌では十分に分離でき
ず、しかも大きな力を要し取扱、運転、コスト等
の上から好ましくなくかつ粉チツプが多量に発生
する欠点がある。従つて融着ゾーンも出来るだけ
容器本体1の上部、少くとも中心部より上方位置
にくるように設定するのがよい。ここで所定の結
晶化までの時間より排出間隔の時間で短い場合は
所定の結晶化時間に対応するチツプ域即ち融着ゾ
ーンが十分に撹拌できるようにその取付密度域を
広げればよい。 Next, a predetermined amount of chips is taken out from the outlet 3 of the container body 1 by a discharge means such as a valve (not shown), and
Correspondingly, when the chip level falls, the level meter 8 operates and the rotary feeder 10 starts operating, and the chips are fed until they reach the original level position. If we assume that the amount of chips that have entered the rotary feeder 10 from level L to level H before it is driven and stopped by the detection signal from the level meter 8, then the time required for the required crystallization depth (for example, 30μ) is In addition, the distance between the stirring blades and baffle plates installed between level H and level L is set to be smaller than that in other areas, so that the time required for discharging the next chip is shorter than the time required to eject the next chip. Ensure sufficient stirring. For this reason, the newly introduced chips from level L to level H are rapidly heated by the heated gas, and their surfaces begin to crystallize, and at the same time, fusion between the chips begins to occur. ), the spacing between the stirring blades, etc. (in this case, they may be spaced closely not only in the vertical direction but also in the horizontal direction) is small and effective stirring is performed, so there is less fusion between chips and there is no lumpy fusion. No more chips. If the welding zone is not sufficiently cleaned, large numbers of welded chips will occur, and in some cases, the entire welded zone will be fused and cannot be discharged. In addition, the fused chips generated in the fused zone cannot be separated sufficiently by subsequent stirring, and furthermore, a large amount of force is required, which is undesirable from the viewpoint of handling, operation, cost, etc., and there is a drawback that a large amount of powdered chips is generated. . Therefore, it is preferable that the fusion zone is located as much as possible in the upper part of the container body 1, at least in a position above the center. If the discharge interval is shorter than the predetermined crystallization time, the mounting density range may be widened so that the chip region corresponding to the predetermined crystallization time, that is, the fusion zone, can be sufficiently agitated.
以上に説明の如く、本発明によれば特定レベル
域の撹拌翼取付密度を大きくしているので融着チ
ツプの発生が少く、効果的な予備結晶化が行え従
つて後工程における処理、取扱いが非常に容易と
なる。 As explained above, according to the present invention, the mounting density of the stirring blades in a specific level range is increased, so that the generation of fused chips is reduced, and effective preliminary crystallization can be performed, thereby making it easier to process and handle in the subsequent process. It becomes very easy.
尚、本実施例では加熱ガスの中空の回転軸を利
用して供給するようにしたものを示したが、吹出
口を回転軸から分離し容器本体の側部から熱風配
管を連続するようにしてもよく、又これらの手段
に限定されることなく任意の加熱手段によつても
よい。更にチツプの供給器がホツパ或はサイクロ
ン等を介して貯槽から直接空気輸送等で行うもの
である場合はブロワー、シヤツター等とレベル計
とを連動してチツプの供給をコントロールするよ
うにしてもよい。 In this example, a hollow rotating shaft was used to supply the heated gas, but the outlet was separated from the rotating shaft and the hot air piping was continuous from the side of the container body. Alternatively, any heating means may be used without being limited to these means. Furthermore, if the chip supply device is one that carries out pneumatic transport directly from the storage tank via a hopper or cyclone, the supply of chips may be controlled by linking the blower, shutter, etc. with a level meter. .
図は本発明の実施例を示す概略断面図である。
1……容器本体、2……供給口、3……排出
口、4……回転軸、5……吹出口、6……撹拌
翼、7……邪魔板、8……レベル計、10……ロ
ータリーフイーダ。
The figure is a schematic sectional view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Container body, 2... Supply port, 3... Discharge port, 4... Rotating shaft, 5... Air outlet, 6... Stirring blade, 7... Baffle plate, 8... Level meter, 10... ...Rotary Fida.
Claims (1)
方向に多段に撹拌翼を備えた容器で熱可塑性重合
体チツプを連続的もしくは半連続的に加熱する装
置において、容器内の上部位置にチツプ供給手段
と連動しチツプレベルを制御するレベル計を配設
するとともに、該レベル計近傍位置の撹拌翼を他
位置より上下設置間隔を小さくなるように設けた
ことを特徴とする熱可塑性重合体チツプの加熱装
置。1. In a device that continuously or semi-continuously heats thermoplastic polymer chips in a container that has a supply port at the top and a discharge port at the bottom and is equipped with stirring blades in multiple stages in the vertical direction, A thermoplastic polymer chip characterized in that a level meter is provided to control the chip level in conjunction with a chip supply means, and stirring blades located near the level meter are provided with a smaller vertical installation interval than other positions. heating device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2395680A JPS56120310A (en) | 1980-02-29 | 1980-02-29 | Apparatus for preliminary crystallization of chips of thermoplastic polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2395680A JPS56120310A (en) | 1980-02-29 | 1980-02-29 | Apparatus for preliminary crystallization of chips of thermoplastic polymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56120310A JPS56120310A (en) | 1981-09-21 |
JPS6230888B2 true JPS6230888B2 (en) | 1987-07-06 |
Family
ID=12124991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2395680A Granted JPS56120310A (en) | 1980-02-29 | 1980-02-29 | Apparatus for preliminary crystallization of chips of thermoplastic polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56120310A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01139087A (en) * | 1987-11-27 | 1989-05-31 | Sophia Co Ltd | Pinball machine |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60243127A (en) * | 1984-05-18 | 1985-12-03 | Toray Ind Inc | Method for drying polyester resin |
JPH07112702B2 (en) * | 1986-11-29 | 1995-12-06 | 呉羽化学工業株式会社 | Extrusion molding method for polyphenylene sulfide |
JPH0777727B2 (en) * | 1987-08-20 | 1995-08-23 | 株式会社松井製作所 | Dryer for synthetic resin materials |
JPH0777726B2 (en) * | 1987-08-20 | 1995-08-23 | 株式会社松井製作所 | Dryer for synthetic resin materials |
JP2589153B2 (en) * | 1988-06-23 | 1997-03-12 | 株式会社松井製作所 | High frequency heating type drying apparatus and drying method for resin material |
CN201000259Y (en) * | 2007-01-26 | 2008-01-02 | 张志霄 | Drying mechanism for axis type stirring sludge multilevel indirect steam back |
CN106926385A (en) * | 2015-12-31 | 2017-07-07 | 天津市多彩塑料色母有限公司 | Masterbatch rapid draing tank |
CN106926387A (en) * | 2015-12-31 | 2017-07-07 | 天津市多彩塑料色母有限公司 | Color masterbatch drying equipment with air channel |
-
1980
- 1980-02-29 JP JP2395680A patent/JPS56120310A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01139087A (en) * | 1987-11-27 | 1989-05-31 | Sophia Co Ltd | Pinball machine |
Also Published As
Publication number | Publication date |
---|---|
JPS56120310A (en) | 1981-09-21 |
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