JPS59204510A - Hopper dryer - Google Patents
Hopper dryerInfo
- Publication number
- JPS59204510A JPS59204510A JP58109606A JP10960683A JPS59204510A JP S59204510 A JPS59204510 A JP S59204510A JP 58109606 A JP58109606 A JP 58109606A JP 10960683 A JP10960683 A JP 10960683A JP S59204510 A JPS59204510 A JP S59204510A
- Authority
- JP
- Japan
- Prior art keywords
- air
- hot air
- dry
- blower
- supplied
- 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.)
- Granted
Links
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
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/275—Recovery or reuse of energy or materials
- B29C48/276—Recovery or reuse of energy or materials of energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、特にプラスチック原料等の粒体原料を省熱エ
ネルギーの下で完全乾燥して成形機へ供給することがで
きるホッパードライヤーに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to a hopper dryer that can completely dry granular raw materials such as plastic raw materials while saving energy and supplying the dried granular raw materials to a molding machine.
プラスチック製品の成形に使用されるグラスチック原料
の多くは、ペレット材が使用されているが、このペレッ
ト材に規定以上の水分が含まれていると、加水分解を起
し樹脂が劣化し、成形品の強度及び靭性が低下します。Most of the glass raw materials used for molding plastic products are pellets, but if these pellets contain more moisture than specified, hydrolysis will occur and the resin will deteriorate, making molding difficult. The strength and toughness of the product will decrease.
又、水分を多く含むにつれて溶融樹脂の流動性は増加し
、この結果、金型では過剰充填やパリの発生等が起こり
、成形品の形状精度あるいは表面の光沢に悪影響を及ぼ
すために、このペレット材を充分に乾燥して使用する必
要がある。In addition, the fluidity of the molten resin increases as it contains more water, resulting in overfilling and formation of flakes in the mold, which adversely affects the shape accuracy and surface gloss of the molded product. The material must be thoroughly dried before use.
そこで、従来における高乾燥を必要とするプラスチック
成形現場においては、成形機に送り込む前のペレット材
を乾燥するためのホッパードライヤーが使用されている
が、公知のホッパードライヤーは、第１図に示す構造で
あった。Therefore, in conventional plastic molding sites that require high dryness, hopper dryers are used to dry the pellet material before feeding it into the molding machine, but the known hopper dryer has a structure shown in Figure 1. Met.
即ち、１はホッパードライヤ一本体であって、このホッ
パードライヤ一本体１内Ｃ二乾熱エアーを供給して、こ
のホッパードライヤ一本体１内に入れられているペレッ
トを乾燥せしめるための除湿エアーを、ホッパードライ
ヤ一本体１内へ供給する前で加熱して乾熱エアーとなる
加熱筒５と除湿エアー供給機２が具備されている。この
除湿エアー供給機２は、内部に除湿剤を充填した２基の
除湿塔３．４と除湿剤の乾燥な内軟的に行なうために設
−けられた、クーラー６及びヒーター７及び上記各部を
除湿サイクルと再生サイクル（＝切換える三方弁を有し
ているものである。尚、３ｏｏＣ以上の高温熱風を除湿
剤に送り込んで再生を行なうため、除湿剤が高温となり
クーラーにより常温近くまで冷却しないと除湿効果が得
られないため塔の切換が２時間以上もかかり、ホッパー
ドライヤーに供給する除湿エアーの乾燥度合が大巾に変
動する問題点がある。従って、この従来構造のホッパー
ドライヤーＣ：おいては、そのホッパードライヤ一本体
１内へ乾熱な供給するために、例えば消費電力６謂のヒ
ーター７．３ＫＷの加熱筒５及び３謂のクーラー６を運
転しなければならないことから大電力が消費される問題
点があった。又この従来例においては、ホッパードライ
ヤー１からの高温排気を排気口９よりそのまま排気して
しまう方式と、除湿エアー供給機に戻してやる循環式と
があるが、後者の場合も一部クーラー１０により高温排
気を冷却しないと除湿効果が得られないために熱エネル
ギーの無駄が多い。即ち、クーラーの駆動エネルギーも
必要となる問題点もあった。That is, 1 is a hopper dryer main body, which supplies dehumidified air to dry the pellets contained in the hopper dryer main body 1 by supplying dry heated air. The hopper dryer is equipped with a heating cylinder 5 and a dehumidifying air supply device 2, which heats the air to produce dry air before supplying it into the main body 1. This dehumidifying air supply device 2 consists of two dehumidifying towers 3 and 4 filled with a dehumidifying agent, a cooler 6 and a heater 7 provided to keep the dehumidifying agent dry, and the above-mentioned parts. It has a three-way valve that switches between the dehumidification cycle and the regeneration cycle (= it has a three-way valve that switches between the dehumidification cycle and the regeneration cycle. In addition, since high-temperature hot air of 3ooC or higher is sent to the dehumidifier for regeneration, the dehumidifier becomes high temperature and is not cooled down to near room temperature by the cooler. Since the dehumidifying effect cannot be obtained, it takes more than two hours to switch the tower, and there is a problem that the degree of dryness of the dehumidified air supplied to the hopper dryer fluctuates widely.Therefore, this conventional hopper dryer C: In order to supply dry heat into the hopper dryer main body 1, it is necessary to operate, for example, a heating tube 5 with a power consumption of 6, a heater with a power consumption of 7.3 KW, and a cooler 6 with a power consumption of 3. In addition, in this conventional example, there is a method in which the high-temperature exhaust from the hopper dryer 1 is directly exhausted from the exhaust port 9, and a circulation method in which it is returned to the dehumidified air supply machine. In the latter case, too, a dehumidifying effect cannot be obtained unless the high-temperature exhaust gas is partially cooled by the cooler 10, resulting in a large amount of wasted thermal energy.In other words, there is also a problem in that driving energy for the cooler is also required.
本発明はかかる問題点を解消するためになされたもので
、熱エネルギーを有効利用する事により必要最小限とな
る様考慮し、省エネルギー及び設備を削減する事が出来
る様にしたホッパードライヤーを提供する事を目的とす
るものである。The present invention has been made to solve these problems, and provides a hopper dryer that can save energy and reduce equipment by effectively utilizing thermal energy to minimize the necessary amount. The purpose is to
以下（二本発明を第２図に示す実施例に基いて詳細に説
明する。The present invention will be explained in detail below based on the embodiment shown in FIG.
１１．１２は内部に除湿剤１３を充填した除湿筒であっ
て、これら双方の除湿筒１１と１２は同□ ３
□
一構造であって、いずれも２つ宛の吸排気口１４１５が
設けられている。そして一方の吸排気口１４は３方切換
弁１６を介してコンプレッサーからの圧縮空気供給口１
７と排気口１８に連通されている。又、上記双方の吸排
気口１５は、夫々の一方向弁２０と並設されたオリフィ
ス１９を介して、プロワ−２９と加熱筒２２との間Ｃ二
あるノズル２３により加熱筒２２内に通じている。この
加熱筒２２内（：はヒーター２４が配設されており、こ
の加熱筒２２内Ｃ：供給された超乾燥エアーは戻って来
た熱風と混合され乾熱エアーとして得られる。この加熱
筒２２で得られた乾熱エアーは、プロワ−２９によりフ
ィルター２５を通ってホッパードライヤ一本体２６内に
供給され、ホッパードライヤ一本体２６内Ｃ：供給され
ているペレット材が乾燥される水分を吸収した排気はフ
ィルター２７を通過して、一方の排気口より導出された
熱風は再びプロワ−２９に吸入され、加熱筒に戻される
。又一方向弁２８により一部外へ排気される。11 and 12 are dehumidifying tubes filled with a dehumidifying agent 13 inside, and both of these dehumidifying tubes 11 and 12 are the same □ 3
□ They have the same structure, and both have intake and exhaust ports 1415 for two. One intake/exhaust port 14 is connected to the compressed air supply port 1 from the compressor via a three-way switching valve 16.
7 and an exhaust port 18. In addition, both of the intake and exhaust ports 15 are communicated into the heating cylinder 22 by a nozzle 23 located between the blower 29 and the heating cylinder 22 through orifices 19 arranged in parallel with the respective one-way valves 20. ing. Inside this heating cylinder 22 (: indicates a heater 24 is disposed, and inside this heating cylinder 22 C: the supplied ultra-dry air is mixed with the returned hot air and obtained as dry heat air. This heating cylinder 22 The dry heat air obtained is supplied into the hopper dryer main body 26 by the blower 29 through the filter 25, and inside the hopper dryer main body 26 C: the pellet material being supplied absorbs the moisture to be dried. The exhaust gas passes through the filter 27, and the hot air led out from one exhaust port is sucked into the blower 29 again and returned to the heating cylinder.A portion of the hot air is also exhausted to the outside by the one-way valve 28.
以上が本実施例の構成であるが、次にその作用□
４ □
について述べると、コンプレッサーより供給された圧縮
空気は、給気口１７より切換弁１６を経て一方の除湿筒
、例えば１１へ供給されると、該エアーは、該除湿筒１
１内の除湿剤１３Ｃ：より除湿された後、吸排気口１５
及び一方向弁２０を経て熱交換チューブ２１により外部
へ逃げる熱を吸熱して高温となりノズル２６より加熱筒
２２内へ供給され、この加熱筒２２内でプロワ−２９よ
り戻って来た熱風は本体２６に吹き込まれた温度の約８
０％の温度があり、たとえば１ｏｏＣで吹き込みの温度
を設定したとすると、戻りの温度は８０Ｃ位であり、２
０Ｃ上昇させるだけの熱量分ヒーター２４で供給すれば
よいこととなる。又本発明の主目的である超乾燥エアー
を、水分を吸湿して戻って来た水分と混合して乾熱エア
ーに出来るのかという問題点（二ついて述べる事にする
。たとえば、外気を取り入れて乾燥するホッパードライ
ヤーについては、外気の条件が空温２０Ｃ１絶対圧カフ
６０ ｌｌｍＨｇ、相対湿度７５％の湿り空気である
とすると１−中Ｃ二含まれる水分量は、１０．５２１ｇ
もあることとなるので、毎分２．５−のブロワ−にて上
記条件の空気を導入したとすると、時間当り、２６３０
．２５ ｇもの水分が樹脂を通過することとなってしま
うので、吸水率のはげしいナイロン等にあっては乾燥よ
りも水分をあたえる結果となりかねない。そこで、この
様な樹脂にあっては除湿装置が必要となるわけだが、従
来の設備では大がかりとなり、ランニングコストもかか
りすぎる問題点があったが、本発明によると、例えば、
０．３％の水分を含んでいる５０ｋｆの６．６ナイロン
樹脂内には、１５０ｇの水分しか含まれておらないが、
樹脂メーカーが推奨する水分率は０．１％位なので、０
．１％の水分量に３時間で０．３％の樹脂５０ｋｆを乾
燥するには時間当り３３．３ｇの水分を追い出せばよい
事となる。ここで循環方式Ｃ：て超乾燥エアーの露点マ
イナス５３ｒの空気を毎時５．４ ？Ｆ？送り込んだと
すると、加熱前にはホッパ一本体２６内は。The above is the configuration of this embodiment.
Regarding 4 □, when the compressed air supplied from the compressor is supplied from the air supply port 17 via the switching valve 16 to one dehumidifying cylinder, for example 11, the air is transferred to the dehumidifying cylinder 1.
Dehumidifier 13C in 1: After further dehumidification, the air intake and exhaust port 15
The heat that escapes to the outside through the one-way valve 20 is absorbed by the heat exchange tube 21, and becomes high temperature, and is supplied from the nozzle 26 into the heating cylinder 22. The hot air returned from the blower 29 within the heating cylinder 22 is returned to the main body. About 8 of the temperature blown into 26
For example, if there is a temperature of 0% and the blowing temperature is set at 1ooC, the return temperature is about 80C and 2
This means that the heater 24 only needs to supply enough heat to raise the temperature by 0C. There is also the problem of whether ultra-dry air, which is the main purpose of the present invention, can be made into dry heat air by absorbing moisture and mixing it with the returned moisture. Regarding the drying hopper dryer, if the outside air conditions are humid air with an air temperature of 20C1 absolute pressure cuff 60 llmHg and a relative humidity of 75%, the amount of moisture contained in 1-C2 is 10.521g.
Therefore, if air is introduced under the above conditions using a blower at a rate of 2.5 - per minute, the air flow rate will be 2,630 per hour.
．． As much as 25 g of moisture will pass through the resin, which may result in more moisture than drying in the case of materials such as nylon, which have a high water absorption rate. Therefore, such resin requires a dehumidifying device, but conventional equipment is large-scale and has the problem of high running costs, but according to the present invention, for example,
A 50kf 6.6 nylon resin containing 0.3% water only contains 150g of water.
The moisture content recommended by resin manufacturers is around 0.1%, so 0.
．． To dry 50kf of 0.3% resin in 3 hours with a moisture content of 1%, it is sufficient to expel 33.3g of moisture per hour. Here, circulation method C: ultra-dry air with a dew point of -53r at a rate of 5.4 degrees per hour. F? If it is fed, the inside of the hopper main body 26 before heating.
露点温度マイナスｚｏｔＪ２を下となるので、マイナス
２０Ｃであったとするとホッパー内樹脂が９０！入って
いるとして、樹脂の実容積を６０％とすると、樹脂容積
は５４ノとなりホッパ一本体２６及び加熱筒２２、ブロ
ワ−２９等を含むホッパードライヤーの容積が１１０１
であるからホッパー内空間容積は、５６！となり露点マ
イナス２０Ｃ中に含まれる水分量は、５６．、ｅ中テ０
．０４９４７６ ｇとなる。The dew point temperature is below minus zotJ2, so if it is minus 20C, the resin in the hopper is 90! If the actual volume of the resin is 60%, the resin volume will be 54 mm, and the volume of the hopper dryer including the hopper body 26, heating tube 22, blower 29, etc. will be 1101 mm.
Therefore, the volume of the space inside the hopper is 56! Therefore, the amount of water contained in a dew point of minus 20C is 56. , e middle te 0
．． 049476 g.
ここで、排気される空気の量は注入した空気量砿：等し
いので、１時間当り５．４−が排気口２８から排気され
る事となるが、実験によると排気時の露点温度が６．６
ナイロンにおいては、当初の２時間半位いはプラス５Ｃ
位となっているので、その中に含まれる水分量は３６．
７０９２ ｇとなり、マイナス５３Ｃにて吹込まれる超
乾燥エアーの５．４ｄｌＨｒ中に含まれる水分量は、０
．１４３６４ ｆｌとなるので１時間当り少なくなる水
分量は３６．７０９２−０．１４３６４＝ ３６．５６
５５６ｇとなるので、３時間で１０９．６９ｇとなる。Here, since the amount of air exhausted is equal to the amount of air injected, 5.4 - is exhausted from the exhaust port 28 per hour, but according to experiments, the dew point temperature at the time of exhaust is 6.4 -. 6
For nylon, the initial 2 and a half hours or plus 5C
Therefore, the amount of water contained in it is 36.
7092 g, and the amount of water contained in 5.4 dlHr of ultra-dry air blown at -53C is 0.
．． Since it becomes 14364 fl, the amount of water decreased per hour is 36.7092 - 0.14364 = 36.56
Since it will be 556g, it will be 109.69g in 3 hours.
ここで時間当り１５ｋｆの射出量で使用する成形機に取
り付けた場合、３時間弱で成形条件に適合し使用した分
断たに未乾燥樹脂が入ってきても乾燥状態を維持する事
が出来る事となる。この様□ ７ □
な事から本実施例によると消費電力は乾熱エアーを得る
ためのヒーター電力は、Ｉ Ｍ ／ Ｈｒ以下、除湿エ
アー供給によるコンプレッサー１．５１Ｗ／Ｈｒ以下、
プｌ：”７−０．４ ＫＷ／Ｈｒテ、合計２ 、９ Ｋ
Ｗ ／Ｈｒ以下という大巾な省エネルギ効果をもたらし
た事と合せて、排気される熱量もＩ Ｍ ／Ｈｒのヒー
ター消費電力の２０％しか排気しないので室内冷房も大
巾に省エネとなる。If it is installed in a molding machine that uses an injection rate of 15 kf per hour, it will meet the molding conditions in less than 3 hours and will be able to maintain a dry state even if undried resin comes in. Become. From this □ 7 □, according to this example, the power consumption for the heater to obtain dry heat air is less than I M / Hr, the compressor for supplying dehumidified air is less than 1.51 W/Hr,
Pl:”7-0.4 KW/Hr, total 2,9 K
In addition to bringing about a large energy saving effect of less than W /Hr, the amount of heat exhausted is only 20% of the power consumption of the I M /Hr heater, resulting in a large energy saving for indoor cooling.
第１図は従来のホッパードライヤーを示した説明図、第
２図は本発明よりなるホッパードライヤーの実施例を示
した説明図である。
１１．１２・・・除湿筒 １３・・・除湿剤１４．
１５・・・吸排気口 １６・・・切換弁１７・・・圧
縮空気供給口 １８・・・再生エアー排気口１９・・
・オリフィス ２０・・・一方向弁２１・・・熱
交換チューブ ２２・・・加熱前２３・・・除湿エア
ー吹込ノズル２４・・・ヒーター２５・・・フィルター
２６・・・ホッパードライヤ一本体２７・
・・フィルター ２８・・・排気一方向弁□
８ □
２９・・・ブロワ−
特許出願人 中 込 松 爾
し）ノー】−工Ｔ′FIG. 1 is an explanatory diagram showing a conventional hopper dryer, and FIG. 2 is an explanatory diagram showing an embodiment of the hopper dryer according to the present invention. 11.12... Dehumidifying cylinder 13... Dehumidifying agent 14.
15... Intake/exhaust port 16... Switching valve 17... Compressed air supply port 18... Regeneration air exhaust port 19...
- Orifice 20... One-way valve 21... Heat exchange tube 22... Before heating 23... Dehumidifying air blowing nozzle 24... Heater 25... Filter 26... Hopper dryer body 27.
... Filter 28 ... Exhaust one-way valve □
8 □ 29...Blower Patent applicant Nakagomi Matsuji) No] - Engineering T'
Claims (1)
個所の排気口を有し、一方の排気口より導出された熱風
を再びブロワ−に吸入させブロワ−の吹出し口と接続さ
れる加熱筒との間に、除湿装置より高度に乾燥した空気
を導入するノズルを設け、ホッパーより戻って来た熱風
と高乾燥の空気とを混合する事により絶対湿度を下げて
、再び加熱筒により所定の温度に加熱して、下部吹込口
より吹込む熱風循環方式槽上とし、乾燥対象物より吸収
して湿気を含んだ空気を、除湿装置より導入された乾燥
空気量と同量を他方の排気口より排気し常時上記熱風吹
込口より高乾燥の熱風が吹き込まれる様、高乾燥空気導
入ノズルとブロワ−により熱風を循環させて加熱筒によ
り加熱された乾燥空気を循環させるホッパードライヤ一
本体と高乾燥空気を供給する除湿装置を有していること
な特徴とするホッパードライヤー。Dry hot air inlet at the bottom of the hopper dryer, two at the top
The hot air drawn out from one exhaust port is sucked into the blower again, and highly dry air is introduced from the dehumidifier between the blower outlet and the connected heating tube. A hot air circulation system in which the hot air returned from the hopper is mixed with highly dry air to lower the absolute humidity, heated again to a specified temperature by the heating tube, and then blown in from the lower air outlet. Above the tank, air containing moisture absorbed from the object to be dried is exhausted from the other exhaust port in an amount equal to the amount of dry air introduced from the dehumidifier, and highly dry hot air is constantly blown from the hot air inlet. The main feature is that it has a hopper dryer body that circulates hot air using a highly dry air introduction nozzle and a blower to circulate dry air heated by a heating cylinder, and a dehumidifier that supplies highly dry air. hopper dryer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58109606A JPS59204510A (en) | 1983-06-18 | 1983-06-18 | Hopper dryer |
| KR1019840003093A KR870000845B1 (en) | 1983-06-18 | 1984-06-02 | Hopper drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58109606A JPS59204510A (en) | 1983-06-18 | 1983-06-18 | Hopper dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59204510A true JPS59204510A (en) | 1984-11-19 |
| JPH0242044B2 JPH0242044B2 (en) | 1990-09-20 |
Family
ID=14514542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58109606A Granted JPS59204510A (en) | 1983-06-18 | 1983-06-18 | Hopper dryer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS59204510A (en) |
| KR (1) | KR870000845B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63231909A (en) * | 1987-03-20 | 1988-09-28 | Matsuji Nakagome | Dryer of plastic pellet |
| JPS6467305A (en) * | 1987-09-08 | 1989-03-14 | Kawata Mfg | Drying device for powdery and granular materials |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5131686A (en) * | 1990-09-20 | 1992-07-21 | Carlson Thomas S | Method for producing identification cards |
| JPH0683267A (en) * | 1991-12-12 | 1994-03-25 | Honshu Paper Co Ltd | Antistatic adhesive label |
| KR101909810B1 (en) | 2017-03-02 | 2018-12-18 | 박현철 | Injection mold for molding products with thread |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54135853A (en) * | 1978-04-14 | 1979-10-22 | Teijin Ltd | Method of drying thermoplastic synthetic resin |
-
1983
- 1983-06-18 JP JP58109606A patent/JPS59204510A/en active Granted
-
1984
- 1984-06-02 KR KR1019840003093A patent/KR870000845B1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54135853A (en) * | 1978-04-14 | 1979-10-22 | Teijin Ltd | Method of drying thermoplastic synthetic resin |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63231909A (en) * | 1987-03-20 | 1988-09-28 | Matsuji Nakagome | Dryer of plastic pellet |
| JPS6467305A (en) * | 1987-09-08 | 1989-03-14 | Kawata Mfg | Drying device for powdery and granular materials |
| JPH0639098B2 (en) * | 1987-09-08 | 1994-05-25 | 株式会社カワタ | Drying equipment for powder and granules |
Also Published As
| Publication number | Publication date |
|---|---|
| KR870000845B1 (en) | 1987-04-25 |
| KR850000293A (en) | 1985-02-26 |
| JPH0242044B2 (en) | 1990-09-20 |
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