JPH042409B2 - - Google Patents
Info
- Publication number
- JPH042409B2 JPH042409B2 JP13859787A JP13859787A JPH042409B2 JP H042409 B2 JPH042409 B2 JP H042409B2 JP 13859787 A JP13859787 A JP 13859787A JP 13859787 A JP13859787 A JP 13859787A JP H042409 B2 JPH042409 B2 JP H042409B2
- Authority
- JP
- Japan
- Prior art keywords
- hot plate
- temperature
- heat medium
- hot
- cooling
- 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
- 238000001816 cooling Methods 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/062—Press plates
- B30B15/064—Press plates with heating or cooling means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Press Drives And Press Lines (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明は積層板又はプラスチツク板を加熱圧締
するホツトプレスに関する。特に高温にて加熱圧
締処理を行うホツトプレスの熱板の温度制御をよ
り精度良く行う温度制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a hot press for hot pressing a laminated plate or a plastic plate. In particular, the present invention relates to a temperature control device that more accurately controls the temperature of a hot plate in a hot press that performs heat pressing at high temperatures.
（従来技術）
ホツトプレスにおいて処理板体を加熱圧締する
際、処理板の各層を接着させるための処理温度は
合板の場合は比較的低温の120℃程度にて接着す
る接着剤が使用されるので加熱源として蒸気が使
用されるが、最近耐熱性を有する積層板が使用さ
れるようになり接着剤にポリイミドのように溶融
温度が300℃が必要とされる。このため蒸気加熱
では処理できないため電気加熱方式が採用され
る。然しホツトプレス処理においては加熱だけで
なく加熱を終えた後冷却を迅速にすることが必要
とされる。電熱加熱では冷却は別の手段が必要で
あり従来では水による冷却が行われていた。(Prior art) When heat-pressing a treated board in a hot press, the processing temperature for bonding each layer of the treated board is relatively low in the case of plywood, at around 120°C. Steam is used as a heating source, but recently heat-resistant laminates have come into use, and adhesives require a melting temperature of 300°C, like polyimide. For this reason, it cannot be treated with steam heating, so electric heating is used. However, hot pressing requires not only heating but also rapid cooling after heating. Electric heating requires another means of cooling, and conventionally cooling has been done with water.
（問題点）
ホツトプレスにて積層板を加熱圧締処理する際
最初熱板上に積層板を載置し次に予め定めた温度
と圧力にて圧締する。このとき各積層板の接着剤
は加熱されて溶融を始め加圧によつて水平方向に
流動を始める。この状態にて放置すれば流動化し
た接着剤は板の四方から溢出し始め過度に溢出す
るとき製品として満足できない状態となる。この
ため水の循環により熱板を冷却させ接着剤を固化
させ接着剤の流動を止める必要がある。(Problem) When heat-pressing a laminate using a hot press, the laminate is first placed on a hot plate and then pressed at a predetermined temperature and pressure. At this time, the adhesive on each laminate is heated and begins to melt and begins to flow horizontally due to pressure. If left in this state, the fluidized adhesive will begin to overflow from all sides of the board, and if it overflows excessively, the product will be unsatisfactory. For this reason, it is necessary to cool the hot plate by circulating water to solidify the adhesive and stop the flow of the adhesive.
然し従来のように単に水を熱板内に循環させる
だけでは循環水路の入口と出口では大きな温度勾
配を生じ製品に冷却条件の相異から内部歪を発生
させる。又熱板を300℃に加熱し水にて急冷する
ことは水路内に蒸気が発生し障害を生じる。 However, simply circulating water within the hot plate as in the past creates a large temperature gradient at the inlet and outlet of the circulation waterway, causing internal distortion in the product due to the difference in cooling conditions. Also, heating the hot plate to 300°C and rapidly cooling it with water will generate steam in the water channel, causing problems.
処理板体の品質には接着剤の溢出以外に加熱中
の熱板表面温度の均一化と冷却における冷却速度
の熱板内における均一化、そして更に毎サイクル
におけるプレス加熱冷却条件の再現化の精度が要
求される。これに対して電熱加熱と水冷却の併用
手段では満足できる解決手段ではない。 In addition to adhesive overflow, the quality of the processed plate is determined by the uniformity of the surface temperature of the hot plate during heating, the uniformity of the cooling rate within the hot plate during cooling, and the accuracy of reproducing the press heating and cooling conditions in each cycle. is required. On the other hand, a combination of electric heating and water cooling is not a satisfactory solution.
（問題解決のための手段）
本発明はこれらの問題を解決するため熱板間隔
内に板体を挿入して加熱圧締するホツトプレスに
於いて、該熱板内に複数の温度制御可能な電熱ヒ
ータと熱媒体通路とを設け、該熱板の熱媒体通路
の入口に連通する管路に熱媒体を環流させるポン
プを設け、一方該熱板の熱媒体通路の出口に連通
する排出管路に３方調整弁を設け、該排出管路に
温度センサを設け、且つ該３方調整弁にポンプと
連通する管路と冷却用熱交換器に連通する管路と
を設け、更に冷却用熱交換器とポンプとを連通す
る管路を設け、予め定めた熱板加熱冷却プログラ
ム設定器によるプログラムに従つて該温度センサ
からの信号をフイードバツクして３方調整弁の流
量と流れの方向を制御することによつて問題解決
を図つた。(Means for Solving the Problems) In order to solve these problems, the present invention provides a hot press in which a plate is inserted between the hot plates and heated and pressed. A heater and a heat medium passage are provided, a pump for circulating the heat medium is provided in a pipe line communicating with an inlet of the heat medium passage of the heat plate, and a discharge pipe communicating with an outlet of the heat medium passage of the heat plate is provided with a pump. A three-way regulating valve is provided, a temperature sensor is provided in the discharge pipe, and a pipe communicating with the pump and a pipe communicating with a cooling heat exchanger are provided in the three-way regulating valve, and further a cooling heat exchanger is provided. A pipe line is provided to communicate between the device and the pump, and the flow rate and flow direction of the three-way regulating valve are controlled by feeding back the signal from the temperature sensor according to a predetermined program by a hot plate heating/cooling program setting device. I tried to solve the problem by doing this.
（実施例）
以下本発明について図面に従つて実施例を説明
する。第２図において１は真空式ホツトプレスカ
バー本体であり２は真空式ホツトプレスカバー本
体の内に設置したホツトプレス装置であり３はホ
ツトプレス装置において処理板体を載置し加熱圧
締処理をする熱板である。４は熱板３の熱板間隔
を解放したとき熱板３をブラケツト５を介して支
持する段板である。６は開閉扉であり開閉扉６を
閉じたとき真空式ホツトプレスカバー本体１内を
真空状態を保つようにシールを行うようにしてい
る。７は開閉扉６を開閉するための駆動シリンダ
であり該駆動シリンダ７は真空式ホツトプレスカ
バー本体１の上部に固定した枠８に固定し該駆動
シリンダ７に挿嵌されたピストンロツド７Ａの先
端を開閉扉６の上部に固定されている。第１図は
本発明の熱板の温度制御のための媒体回路図を含
む図面であり９は熱板３の側面に穿けた孔に挿嵌
したカートリツジヒータであり複数本設けてい
る。(Example) Examples of the present invention will be described below with reference to the drawings. In Fig. 2, 1 is the vacuum hot press cover body, 2 is the hot press device installed inside the vacuum hot press cover body, and 3 is the hot press device where the processed plate is placed and heat pressed. It is a board. Reference numeral 4 denotes a step plate that supports the hot plate 3 via the bracket 5 when the hot plate spacing between the hot plates 3 is released. Reference numeral 6 denotes an opening/closing door, and when the opening/closing door 6 is closed, the interior of the vacuum type hot press cover main body 1 is sealed to maintain a vacuum state. Reference numeral 7 denotes a drive cylinder for opening and closing the opening/closing door 6. The drive cylinder 7 is fixed to a frame 8 fixed to the upper part of the vacuum hot press cover body 1, and the tip of the piston rod 7A inserted into the drive cylinder 7 is inserted into the frame 8. It is fixed to the upper part of the opening/closing door 6. FIG. 1 is a drawing including a medium circuit diagram for controlling the temperature of a hot plate according to the present invention, and numeral 9 denotes cartridge heaters inserted into holes drilled in the side surface of the hot plate 3. A plurality of cartridge heaters are provided.
１０はカートリツジヒータをPID制御するPID
制御装置である。１１はカートリツジヒータに対
する温度センサである。１２は熱板３に設けた熱
媒体通路であり本実施例ではカートリツジヒータ
９に直交して熱媒体通路を設けている。カートリ
ツジヒータ９と熱媒体通路１２の熱板３内におけ
るレイアウトは第３図は示すように中心部にカー
トリツジヒータ９を設け上部と下部に熱媒体通路
１２をそれぞれ設けている。又中心部に熱媒体通
路１２を設けることも可能である。カートリツジ
ヒータと熱媒体通路を平行させることも可能であ
る。１３は冷却用熱交換器であり１４は熱媒体を
循環させるポンプである。１５は熱板の熱媒体通
路１２に連結した管路１６とポンプ１４に連通す
る管路１７とを連通させたり冷却用熱交換器１３
と連通する管路１８とを連通させるための３方調
整弁でありダイヤフラム１５Ａを用い信号によつ
て３方調整弁１５の開度が制御される。１９は熱
板から排出された熱媒体の温度を感知する温度セ
ンサーである。２０は３方調整弁１５に対して熱
媒体の流れの方向と流量を調整する３方調整弁制
御指令装置である。２１は冷却用熱交換器１３と
ポンプ１４を連結した管路である。２２は冷却用
熱交換器１３内の温度を検知する温度センサーで
ある。２３は冷却用熱交換器内に循環する冷却媒
体をクーリングタワーに放出し又その放出量を調
整する調整弁である。２４は冷却媒体の温度を制
御する調整弁の開度を制御する制御装置である。
２５は熱媒体が加熱によつて膨張する量を弾力的
に吸収するための膨張タンクである。２６は熱板
温度制御プログラム設定器である。次に作動につ
いて説明する。板体の処理条件として板体の処理
温度を370℃とし加熱圧締後毎分2.5℃の冷却速度
にて冷却する場合を例として説明する。 10 is a PID that controls the cartridge heater
It is a control device. 11 is a temperature sensor for the cartridge heater. Reference numeral 12 denotes a heat medium passage provided in the hot plate 3, and in this embodiment, the heat medium passage is provided perpendicularly to the cartridge heater 9. As shown in FIG. 3, the layout of the cartridge heater 9 and heat medium passages 12 within the hot plate 3 is such that the cartridge heater 9 is provided in the center and the heat medium passages 12 are provided in the upper and lower parts, respectively. It is also possible to provide the heat medium passage 12 in the center. It is also possible to make the cartridge heater and the heat medium passage parallel to each other. 13 is a cooling heat exchanger, and 14 is a pump that circulates the heat medium. Reference numeral 15 indicates a cooling heat exchanger 13 that connects a pipe line 16 connected to the heat medium passage 12 of the hot plate and a pipe line 17 that communicates with the pump 14.
The opening degree of the three-way regulating valve 15 is controlled by a signal using a diaphragm 15A. A temperature sensor 19 detects the temperature of the heat medium discharged from the hot plate. 20 is a three-way regulating valve control command device that adjusts the flow direction and flow rate of the heat medium with respect to the three-way regulating valve 15. 21 is a pipe line connecting the cooling heat exchanger 13 and the pump 14. 22 is a temperature sensor that detects the temperature inside the cooling heat exchanger 13. Reference numeral 23 designates a regulating valve that discharges the cooling medium circulating in the cooling heat exchanger to the cooling tower and adjusts the amount of discharge. 24 is a control device that controls the opening degree of a regulating valve that controls the temperature of the cooling medium.
25 is an expansion tank for elastically absorbing the amount of expansion of the heat medium due to heating. 26 is a hot plate temperature control program setting device. Next, the operation will be explained. As an example of processing conditions for the plate, a case will be explained in which the processing temperature of the plate is 370°C and the plate is cooled at a cooling rate of 2.5°C per minute after hot pressing.
先ずカートリツジヒータの設定温度を370℃に
設定する。回路内に一定量の熱媒体を充たしそし
て膨張タンク２５内にはN2ガスを封入している。
回路内における熱媒体の沸騰点を高めるため膨張
タンク２５内のN2ガスの圧力を５Kg／cm2とし熱
媒体の沸騰点を380℃としている。 First, set the temperature of the cartridge heater to 370℃. The circuit is filled with a certain amount of heat medium, and the expansion tank 25 is filled with N2 gas.
In order to raise the boiling point of the heating medium in the circuit, the pressure of the N 2 gas in the expansion tank 25 is set to 5 kg/cm 2 and the boiling point of the heating medium is set to 380°C.
次に開閉扉６を上昇させ熱板３上に処理板体を
載置する。処理板体の載置が完了した後熱板を上
昇させ処理板体への加圧を開始する。このとき熱
媒体回路において３方調整弁１５のＢポートを断
にしABポートとＡポートを連通させてあるので
熱媒体は冷却用熱交換器を通過しないでポンプ１
４の駆動によつて熱媒体は熱板３内を循環する。
この場合熱板３の温度制御はPID制御装置１０に
よつて制御されるが熱媒体が熱板３内を循環しカ
ートリツジヒータからの熱を吸収して昇温しPID
制御と併せて熱板３の均一加熱を可能としてい
る。処理板体を一定時間370℃で処理した後板体
の接着が完了するとカートリツジヒータの通電を
断とし３方調整弁１５のＢポートを熱板温度制御
プログラム設定器２６からのプログラムに従つて
開くことにより、熱板３を環流していた熱媒体の
一部を冷却用熱交換器１３に流入させ冷却された
熱媒体が高温の熱媒体と混合させる。冷却された
熱媒体の混入割合と温度センサ１９より検出した
温度を３方調整弁制御指令装置にフイードバツク
させ予め定めた冷却速度を達成させる。実施例は
370℃から230℃まで冷却した後３方調整弁のＢポ
ートを全開し急冷を行う。そして熱板３間隔を開
き処理板体を熱板３上から取り出し次のサイクル
を開始する。 Next, the opening/closing door 6 is raised and the processing plate is placed on the hot plate 3. After the placement of the processing plate is completed, the hot plate is raised to start applying pressure to the processing plate. At this time, in the heat medium circuit, the B port of the 3-way regulating valve 15 is disconnected and the AB port and A port are communicated, so the heat medium does not pass through the cooling heat exchanger and is transferred to the pump 1.
4 causes the heat medium to circulate within the hot plate 3.
In this case, the temperature control of the hot plate 3 is controlled by the PID control device 10, but the heat medium circulates inside the hot plate 3, absorbs heat from the cartridge heater, and raises the temperature of the PID.
In addition to control, uniform heating of the hot plate 3 is made possible. After the processed plate is treated at 370°C for a certain period of time, when the adhesion of the plate is completed, the cartridge heater is turned off and the B port of the three-way regulating valve 15 is set according to the program from the hot plate temperature control program setter 26. By opening, a part of the heat medium that was circulating through the hot plate 3 flows into the cooling heat exchanger 13, and the cooled heat medium is mixed with the high temperature heat medium. The mixing ratio of the cooled heat medium and the temperature detected by the temperature sensor 19 are fed back to the three-way regulating valve control command device to achieve a predetermined cooling rate. The example is
After cooling from 370℃ to 230℃, the B port of the 3-way control valve is fully opened to perform rapid cooling. Then, the interval between the hot plates 3 is opened and the treated plate is taken out from the hot plate 3 to start the next cycle.
（効果）
本発明の効果としてはホツトプレスの熱板表面
温度の均一化及び加熱後熱板の冷却速度のプログ
ラム制御の精度向上を図つたことにある。実施し
た例についての効果を以下説明する。(Effects) The effects of the present invention are to make the surface temperature of the hot plate of the hot press uniform and to improve the accuracy of program control of the cooling rate of the hot plate after heating. The effects of the implemented examples will be explained below.
(1) 熱板寸法 1000×1000×100ｍ／ｍ
(2) 熱板設定温度 370℃
(3) 昇温速度 10℃／min.
(4) 熱媒体油
(イ) サームエス600（新日鉄化学）
(ロ) 油量400L
(ハ) 循環油量 300L／min.
(5) 降温速度 2.6℃／min.
（370℃→236℃）
(6) 急冷開始温度 235℃
第４図は本発明による熱板のプログラム制御の
時間に対する熱板の表面温度の変化について熱板
表面上のある１点（測定点15）の測定した結果を
示すもので第５図は測定点15以外の８点について
第４図と同様について測定した温度の差を図示し
たものである。(1) Hot plate dimensions 1000×1000×100m/m (2) Hot plate setting temperature 370℃ (3) Temperature increase rate 10℃/min. (4) Heat transfer oil (a) Therm-S 600 (Nippon Steel Chemical) (B) ) Oil amount 400L (c) Circulating oil amount 300L/min. (5) Temperature lowering rate 2.6℃/min. (370℃→236℃) (6) Rapid cooling start temperature 235℃ Figure 4 shows the hot plate program according to the present invention. Figure 5 shows the results of measurements at one point (measurement point 15) on the surface of the hot plate regarding changes in the surface temperature of the hot plate over control time. Figure 5 is the same as Figure 4 for the 8 points other than measurement point 15. This figure illustrates the difference in temperature measured for .
この測定結果から熱板を370℃に昇温させ温度
一定にしたＡ−Ｂ間においては熱板内の温度が±
５℃に維持されていることが判る。又冷却区間Ｂ
−Ｃ間においても略±５℃に保たれていることが
判る。 From this measurement result, the temperature inside the hot plate is ±
It can be seen that the temperature is maintained at 5°C. Also cooling section B
It can be seen that the temperature is maintained at approximately ±5°C even between -C.
このように本発明においては熱板温度を極めて
精度良く制御することができたのは大きな効果で
ある。 As described above, the present invention has the great effect of being able to control the hot plate temperature with extremely high accuracy.
第１図は本発明のホツトプレスの熱板温度制御
装置の熱媒体の回路を含む図面であり第２図は本
発明の実施例に示すホツトプレスの正面図であり
第３図は熱板の要部拡大図であり第４図は熱板の
表面温度と時間の関係を示すグラフであり第５図
は熱板の基準点における温度の他の測定点と時間
の関係を示すグラフである。
３：熱板、９：カートリツジヒータ、１０：
PID制御装置、１１：温度センサ、１２：熱媒体
通路、１５：３方調整弁、１９：温度センサ、２
０：３方調整弁制御指令装置、２５：膨張タン
ク。
Fig. 1 is a drawing including a circuit for a heat medium of a hot plate temperature control device for a hot press according to the present invention, Fig. 2 is a front view of a hot press shown in an embodiment of the present invention, and Fig. 3 is a main part of a hot plate. FIG. 4 is an enlarged view, and FIG. 4 is a graph showing the relationship between the surface temperature of the hot plate and time, and FIG. 5 is a graph showing the relationship between other temperature measurement points at the reference point of the hot plate and time. 3: Hot plate, 9: Cartridge heater, 10:
PID control device, 11: Temperature sensor, 12: Heat medium path, 15: 3-way regulating valve, 19: Temperature sensor, 2
0: 3-way regulating valve control command device, 25: Expansion tank.
Claims (1)
ツトプレスに於いて、該熱板内に複数の温度制御
可能な電熱ヒータと熱媒体通路とを設け、該熱板
の熱媒体通路の入口に連通する管路に熱媒体を環
流させるポンプを設け、一方該熱板の熱媒体通路
の出口に連通する排出管路に３方調整弁を設け、
該排出管路に温度センサを設け、且つ該３方調整
弁にポンプと連通する管路と冷却用熱交換器に連
通する管路とを設け、更に冷却用熱交換器とポン
プとを連通する管路を設け、予め定めた熱板加熱
冷却プログラム設定器によるプログラムに従つて
該温度センサからの信号をフイードバツクして３
方調整弁の流量と流れの方向を制御することを特
長とするホツトプレスの熱板温度制御装置。1. In a hot press in which a plate is inserted into a space between hot plates and heat-pressed, a plurality of temperature-controllable electric heaters and a heat medium passage are provided in the hot plate, and the heat medium passage of the hot plate is A pump for circulating the heat medium is provided in the pipe line communicating with the inlet, and a three-way regulating valve is provided in the discharge pipe line communicating with the outlet of the heat medium passage of the hot plate,
A temperature sensor is provided in the discharge pipe, and a pipe communicating with the pump and a pipe communicating with the cooling heat exchanger are provided in the three-way regulating valve, and the cooling heat exchanger and the pump are provided in communication. A pipe line is provided, and the signal from the temperature sensor is fed back according to a predetermined program by a hot plate heating/cooling program setting device.
A hot press hot plate temperature control device that is characterized by controlling the flow rate and flow direction of a direction regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13859787A JPS63302011A (en) | 1987-06-02 | 1987-06-02 | Heating plate temperature control device for hot press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13859787A JPS63302011A (en) | 1987-06-02 | 1987-06-02 | Heating plate temperature control device for hot press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63302011A JPS63302011A (en) | 1988-12-08 |
| JPH042409B2 true JPH042409B2 (en) | 1992-01-17 |
Family
ID=15225810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13859787A Granted JPS63302011A (en) | 1987-06-02 | 1987-06-02 | Heating plate temperature control device for hot press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63302011A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2571139B2 (en) * | 1989-12-26 | 1997-01-16 | 株式会社名機製作所 | Hot plate temperature control device in hot press |
| JPH0681680B2 (en) * | 1990-09-17 | 1994-10-19 | 北川精機株式会社 | Temperature controller for tandem press machine |
| JPH04220309A (en) * | 1990-12-20 | 1992-08-11 | Syst Design:Kk | Plastic molding machine with metal mold temperature regulating mechanism and temperature regulating method of metal mold of molding machine |
| JP3507178B2 (en) * | 1995-03-03 | 2004-03-15 | 大日本印刷株式会社 | Manufacturing method of plastic sheet |
| JP3708800B2 (en) * | 2000-06-16 | 2005-10-19 | 株式会社名機製作所 | Hot press hot plate temperature control method |
| JP3785352B2 (en) * | 2001-11-20 | 2006-06-14 | 株式会社名機製作所 | Hot press temperature control method |
| JP4509606B2 (en) * | 2004-03-15 | 2010-07-21 | 株式会社名機製作所 | Hot press hot plate temperature control device |
| JP5171957B2 (en) * | 2008-08-29 | 2013-03-27 | 北川精機株式会社 | Press machine |
| DE102010048420B4 (en) * | 2010-10-15 | 2024-01-11 | Gea Food Solutions Germany Gmbh | Packaging machine with a heating element |
| JP6749796B2 (en) * | 2016-06-21 | 2020-09-02 | 株式会社サーモテック | Temperature control device |
| JP6845201B2 (en) * | 2018-10-11 | 2021-03-17 | 株式会社日本製鋼所 | Hot press device and temperature control method for hot press device |
-
1987
- 1987-06-02 JP JP13859787A patent/JPS63302011A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63302011A (en) | 1988-12-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |