JPS62191060A - Foam coating apparatus - Google Patents
Foam coating apparatusInfo
- Publication number
- JPS62191060A JPS62191060A JP3193086A JP3193086A JPS62191060A JP S62191060 A JPS62191060 A JP S62191060A JP 3193086 A JP3193086 A JP 3193086A JP 3193086 A JP3193086 A JP 3193086A JP S62191060 A JPS62191060 A JP S62191060A
- Authority
- JP
- Japan
- Prior art keywords
- water
- air
- valve
- hose
- spray gun
- 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
- 239000006260 foam Substances 0.000 title claims abstract description 11
- 239000011248 coating agent Substances 0.000 title claims description 6
- 238000000576 coating method Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 9
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims description 17
- 238000000889 atomisation Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 5
- 239000003054 catalyst Substances 0.000 abstract description 3
- 239000003595 mist Substances 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 22
- 239000011550 stock solution Substances 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229960002887 deanol Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012972 dimethylethanolamine Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Nozzles (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は硬質ないし半硬質のポリウレタンフォームの発
泡塗布装置に関し、と（に工場の組立ラインに組込むに
適したポリウレタンの発泡塗布装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a foam coating device for rigid to semi-rigid polyurethane foam, and more particularly, to a foam coating device for polyurethane suitable for being incorporated into a factory assembly line.
（従来の技術）
冷蔵庫の外箱を製造する際には外板及び内板な組立てて
中空箱体を作り、内外層の間へ発泡原液ン注入して発泡
硬化させ断熱層を形成させる。また自動車の車体、プレ
ハブ建築のユニットま１こはこれらの部品を組立てる場
合には、構造材料を組立てに後外側を塗装またはメッキ
することが必要になる。(Prior Art) When manufacturing an outer box for a refrigerator, a hollow box body is made by assembling the outer and inner panels, and a foaming solution is injected between the inner and outer layers to harden the foam and form a heat insulating layer. Furthermore, when assembling a car body, a prefabricated building unit, or these parts, it is necessary to paint or plate the rear outside of the structural material before assembling it.
（発明が解決しようとする問題点）
このような原液の注入工程或いは塗装またはメッキ工程
では、発泡原液、塗料、メッキ液等が構造材料接合部の
僅かな隙間から漏れ出して他の部分ン汚染し、その後の
作業に支障を起す。これを防止するため接合部に目止め
テープを帖付けるとか、薄いバッキング材を挿入すると
かの方法が通常行われる。これらの方法は工程が長（且
つ複雑になるため、自動化した組立ラインには不適であ
る。(Problem to be Solved by the Invention) In such a process of pouring the stock solution or painting or plating process, the foaming stock solution, paint, plating solution, etc. leaks from small gaps between the joints of structural materials and contaminates other parts. This may cause problems in subsequent work. To prevent this, methods such as applying sealing tape to the joints or inserting thin backing materials are usually used. These methods are unsuitable for automated assembly lines because the steps are long (and complex).
（問題乞解決するアこめの手段）
本発明者等は目止め作業乞自動的に行い、生産ラインに
適合する装置について鋭意検討した。とくに口止め剤と
してポリウレタンフォームラ施工する装置について研究
し１こ結果法の発明に到達し１こ０
即ち本発明はプレポリマー２含むポリイソシア坏−トの
加圧輸送装置と、水の空気中分散体の加圧輸送装置と、
噴霧化混合装置と、溶剤洗条装置とから成り、前記し１
こ水の空気中分散体の加圧輸送装置において水量を空気
圧力、ニードルバルブ及び流量計を用いて調節し、空気
オリフィスの出口において水を空気中に分散させホース
中を輸送した後、噴霧化混合装置より噴霧状に放出する
ことを特徴とする発泡塗布装置である。(Another Means to Solve the Problem) The inventors of the present invention have intensively studied a device that can automatically perform the sealing work and be compatible with the production line. In particular, we researched equipment for applying polyurethane foam as a mouth sealant, and as a result, we came up with the invention of a method.That is, the present invention is a pressurized transport device for polyisocyanate containing prepolymer 2, and an air dispersion of water. a pressurized transport device,
It consists of an atomization mixing device and a solvent washing device, and the above-mentioned 1
The water volume is adjusted using air pressure, a needle valve, and a flow meter in a pressurized transportation device for dispersing this water in the air, and the water is dispersed in the air at the outlet of the air orifice, transported through a hose, and then atomized. This foam coating device is characterized by emitting foam in the form of a spray from a mixing device.
自動組立ラインにおいて目止め剤を施工する場合には、
所定量の目止め剤乞ラインの速度に合わせ一定の時間を
置いて断続的に噴射し、長時間にわたり塗装作業を反復
することが必要になる。このような作業において本発明
の装置は噴霧化混合装置の先端に凝固物ケ生ずることな
く長時間にわたつ吹付作業を安定して行うことができる
。When applying sealant on an automatic assembly line,
It is necessary to spray a predetermined amount of sealant intermittently at fixed intervals according to the speed of the line, and repeat the painting operation over a long period of time. In such operations, the apparatus of the present invention can stably perform spraying operations over a long period of time without forming any solid matter at the tip of the atomization mixing device.
り説明する。プレポリマーを含むポリイソシアネートの
加圧送液装置は窒素源３、窒素減圧弁４、三方ボールバ
ルブ５、逆止弁６及び２６、原液タンク１及び２、排出
バルブ７及び２７、三カポールバルブ８、送液ホース９
より成る。水の空気中分散体の加圧輸送装置は加圧空気
源１２、空気減圧弁１３、バルブ１４、水タンク１１、
ニードルバルブ１６、ｆｆ１ｉ計１７、逆止弁１８、オ
リフィス１５、ホース１９より成る。噴霧化混合装置は
二液型外部混合式スプレーガン１Ｄである。溶剤洗条装
置は窒素減圧弁２ｏ、溶剤タンク２１、排出バルブ２２
、三方ボールバルブ２３、溶剤供給バルブ２４及び２５
、溶剤放出バルブ２８より成る。I will explain. The pressurized liquid feeding device for polyisocyanate containing a prepolymer includes a nitrogen source 3, a nitrogen pressure reducing valve 4, a three-way ball valve 5, check valves 6 and 26, stock solution tanks 1 and 2, discharge valves 7 and 27, and a three-way capole valve 8. , liquid supply hose 9
Consists of. The pressurized transport device for dispersing water in air includes a pressurized air source 12, an air pressure reducing valve 13, a valve 14, a water tank 11,
It consists of a needle valve 16, an ff1i meter 17, a check valve 18, an orifice 15, and a hose 19. The atomization mixing device is a two-component external mixing spray gun 1D. The solvent cleaning device includes a nitrogen pressure reducing valve 2o, a solvent tank 21, and a discharge valve 22.
, three-way ball valve 23, solvent supply valves 24 and 25
, solvent release valve 28.
原液タンク１または２は第２図に示すように、原液補給
口２９または乙０、逆止弁６または２６、排出バルブ７
または２７を上面に具備した耐圧容器である。逆止弁６
及び２６には排気弁及び圧力安全装置ヶ組込み、三方ボ
ールバルブ５と連通している。排出バルブ７または２７
は底部に達する吸上管ろ１または３２を垂下し、出口は
いずれも三カポールバルブ８に連通している。２９また
は６Ｄは封止可能な原液補給装置である。原液タンク１
または２は三方ボールバルブ５及び８を切替えることに
より交互に使用する。As shown in FIG.
or 27 on the top surface. Check valve 6
and 26 incorporate an exhaust valve and a pressure safety device, and communicate with the three-way ball valve 5. Discharge valve 7 or 27
hangs down a suction pipe filter 1 or 32 that reaches the bottom, and both outlets communicate with a three-capole valve 8. 29 or 6D is a sealable stock solution supply device. Stock solution tank 1
Or 2 is used alternately by switching the three-way ball valves 5 and 8.
水タンク１１は第３図に示すように空気加圧バルブ１４
、封止可能な補給口６３、排気弁′５４及び先端に濾過
器５５を固定した吸上管３６を上面に具備した加圧可能
な容器である。空気加圧バルブ１４は空気減圧弁１３に
連通し、吸上管３６はニードルバルブ１６に連通ずる。The water tank 11 is connected to an air pressurizing valve 14 as shown in FIG.
It is a pressurizable container equipped with a sealable replenishment port 63, an exhaust valve '54, and a suction pipe 36 with a filter 55 fixed to its tip on the upper surface. The air pressurization valve 14 communicates with the air pressure reduction valve 13, and the suction pipe 36 communicates with the needle valve 16.
溶剤タンク２１は第４図に示すように窒素減圧弁２０と
連通する加圧管３７、封止可能な補給口３８、排気弁６
９、及び先端に濾過器４０を固定した吸上管４１乞垂下
した排出バルブ２２を上面に具備し１こ加圧可能な容器
である。排出バルブ２２は三方ボールバルブ２５と連通
ずる。三方ボールバルブ２３は排出バルブ２２のほか窒
素減圧弁２０及び溶剤供給バルブ２４及び２５並びに溶
剤放出バルブ２８に連通する。As shown in FIG. 4, the solvent tank 21 includes a pressurizing pipe 37 communicating with the nitrogen pressure reducing valve 20, a sealable supply port 38, and an exhaust valve 6.
9, a suction pipe 41 with a filter 40 fixed to its tip, and a discharge valve 22 hanging down on the upper surface, making it possible to pressurize the container. The exhaust valve 22 communicates with a three-way ball valve 25. The three-way ball valve 23 communicates with the exhaust valve 22 as well as the nitrogen pressure reducing valve 20, the solvent supply valves 24 and 25, and the solvent discharge valve 28.
この吹付塗布装置を運転するときには原液タンク１にプ
レポリマーを含むポリイソシアネー）Ｙ入れ、６〜７
Ｋｇ／ｉの圧カケかけ送液ホース９までポリイソシアネ
ートヲ充てんする。When operating this spray coating device, put polyisocyanate (containing prepolymer) Y in the stock solution tank 1,
Fill the liquid supply hose 9 with polyisocyanate under pressure of Kg/i.
次に水または小量の触媒を添加した水を水量／りに入れ
、４〜５に９／−の空気圧をかげニードルバルブにより
予じめ流量を調節しておく。スプレーガン１０のバルブ
を開けばホース１９内の圧力が低下し、逆止弁１８より
水が流出し、オリフィス１５から噴出する空気中に分散
した状態でホース１９内ン移動し、スプレーガンの先端
より噴腓状に放出する。−力送液ホース９内のプレポリ
マーを含むポリイソシアネートもスプレーガン１０の別
の口から噴霧状に吹出し、水の噴霧と混合して対象物へ
塗布され直ちに発泡ン開始し、５〜３０秒で１０〜２０
倍に発泡し硬化する。Next, add water or water to which a small amount of catalyst has been added, and adjust the flow rate in advance by applying an air pressure of 4 to 5 to 9/- using a shaded needle valve. When the valve of the spray gun 10 is opened, the pressure inside the hose 19 decreases, water flows out from the check valve 18, is dispersed in the air ejected from the orifice 15, moves inside the hose 19, and reaches the tip of the spray gun. It is released in a more cone-like manner. - The polyisocyanate containing the prepolymer in the power supply hose 9 is also blown out in the form of a spray from another port of the spray gun 10, mixed with the water spray, applied to the object, and immediately starts foaming for 5 to 30 seconds. 10-20
It foams and hardens.
（作 用）
本発明の装置によれば空気中への水の分散が２段階に行
われるため、水を極めて細かい粒子として安定な分散状
態乞得ることができる。従ってブレボリマーを含むポリ
イソシアイ・−トを均一に発泡する。従って薄い発泡被
膜を容易に形成し優れ１こ漏れ防止効果２示て。(Function) According to the apparatus of the present invention, water is dispersed into the air in two stages, so that water can be stably dispersed as extremely fine particles. Therefore, the polyisocyanate containing the brevolimer is foamed uniformly. Therefore, a thin foam coating can be easily formed and exhibits an excellent leakage prevention effect.
次に実施例により吹付塗装操作を説明する。Next, the spray coating operation will be explained with reference to an example.
（実施例）
プレポリマー７含むポリイソシアネート（イソシアイ・
−ト基含有量１２．０：＠量％）を原液タンク１に入れ
密閉した後、窒素減圧弁４ビ開き圧力を６〜７Ｋｇ／祠
に調節する。(Example) Polyisocyanate (isocyanate) containing prepolymer 7
After putting the stock solution tank 1 and sealing it, the nitrogen pressure reducing valve 4 is opened and the pressure is adjusted to 6 to 7 kg/h.
別に水９５重量部に触媒としてジメチルエタノールアミ
ン５重量部を溶解した後、水タンク１１に入れて密閉し
空気減圧弁１６を開いて圧カフ４〜５ Ｋｇ ／ ｃｔ
Ａに調節する。溶剤タンク２１にはメチレンクロリドを
入れて密封し、窒素減圧弁２０を開いて圧力’ｔ ３
Ｋｑ ／ ｃｒＡに調節する。Separately, dissolve 5 parts by weight of dimethylethanolamine as a catalyst in 95 parts by weight of water, then put it in the water tank 11 and seal it, and open the air pressure reducing valve 16 to create a pressure cuff of 4~5 kg/ct.
Adjust to A. Fill the solvent tank 21 with methylene chloride, seal it, and open the nitrogen pressure reducing valve 20 to reduce the pressure 't3.
Regulates Kq/crA.
次にバルブ５，７．８Ｙ開き原液を送液ホース９まで充
てんする。バルブ１４’４開きニードルバルブ１６を調
節して流量計１７の目盛’４０．０５〜０．１０ｔ／分
に調整する。Next, valves 5 and 7.8Y are opened to fill the liquid supply hose 9 with the stock solution. The valve 14'4 is opened and the needle valve 16 is adjusted to adjust the scale of the flowmeter 17 to be 40.05 to 0.10 t/min.
スプレーガンの２個のバルブを開けば原液及び水はそれ
ぞれ噴霧状に放出され、混合して対象物に付着し１０秒
間で薄い均一な発泡体を形成し、優れ１こ漏れ防止効果
を示し１こ。When the two valves of the spray gun are opened, the undiluted solution and water are released in the form of a spray, which mixes and adheres to the object, forming a thin, uniform foam within 10 seconds, showing an excellent leak-prevention effect. child.
一日の作業終了後バルブ５及び７を閉じ、送液ホース９
ンスプレーガン１０から取外す。三方バルブ２３を排出
バルブ２２側に開い几後、バルブ２２及び２４ン開けば
送液管路及び送液ホースの溶剤法条ができる。次に三方
バルブ２３を窒素減圧弁２０側に開けば送液管路長＃壱
吾の乾燥ができる。スプレーガンは溶剤放出バルブ２８
に取付け、法条及び乾燥を行う。After finishing the day's work, close the valves 5 and 7, and close the liquid supply hose 9.
from the spray gun 10. After opening the three-way valve 23 to the discharge valve 22 side, open the valves 22 and 24 to complete the solvent flow pipe and hose. Next, by opening the three-way valve 23 to the nitrogen pressure reducing valve 20 side, the liquid feeding pipe length #1go can be dried. Spray gun has solvent release valve 28
Attach it to the holder and dry it.
（発明の効果）
本発明によれば均質なポリウレタンフォーム７薄（塗布
できるため、構造物の組立ラインの速度に合わせて目止
め処理ン行うことができ、その後の作業工程において漏
れを防止することができる。(Effects of the Invention) According to the present invention, since a homogeneous polyurethane foam 7-thin film can be applied, sealing can be performed in accordance with the speed of the structure assembly line, and leakage can be prevented in subsequent work processes. I can do it.
さらに本発明の装置は溶剤法条を行うことな（長時間に
わたり断続吹付は作業を続けることができる。Furthermore, the apparatus of the present invention can continue to operate without using solvents (intermittent spraying for long periods of time).
第１図は本発明の装置の構成を示す。第２図は原液タン
ク１及び２の断面図、第３図は水タンク１１の断面図、
第４図は溶剤タンク２１の断面図２示す。
第１〜第４図において、１及び２は原液タンク、３は窒
素ガス源、４は窒素減圧弁、５は三方ボールバルブ、６
は逆上弁、７は排出バルブ、８は三方ボールバルブ、９
は送液ホース、１０はスプレーガン、１１は水タンク、
１２は加圧空気源、１３は空気減圧弁、１４はバルブ、
１５はオリフィス、１６は二一ドルバルフ、１７は流量
計、１８は逆止弁、１９はホース、２０は窒素減圧弁、
２１は溶剤タンク、２２は排出バルブ、２６は三方ボー
ルバルブ２４及び２５は溶剤供給バルブ、２６は逆止弁
、２７は排出バルブ、２８は溶剤放出バルブ、２９及び
３０は原液補給口、３１及び６２は吸上管、６６は水補
給口 ６４は排気弁、６５は沖過器、３６は吸上管、３
７は加圧管、３８は補給口、６９は排気弁、４０は濾過
器、４１は吸上管を示す。FIG. 1 shows the configuration of the apparatus of the present invention. FIG. 2 is a sectional view of the stock solution tanks 1 and 2, FIG. 3 is a sectional view of the water tank 11,
FIG. 4 shows a sectional view 2 of the solvent tank 21. As shown in FIG. In Figures 1 to 4, 1 and 2 are stock solution tanks, 3 is a nitrogen gas source, 4 is a nitrogen pressure reducing valve, 5 is a three-way ball valve, and 6 is a nitrogen gas source.
is a reverse valve, 7 is a discharge valve, 8 is a three-way ball valve, 9
is a liquid supply hose, 10 is a spray gun, 11 is a water tank,
12 is a pressurized air source, 13 is an air pressure reducing valve, 14 is a valve,
15 is an orifice, 16 is a twenty dollar valve, 17 is a flow meter, 18 is a check valve, 19 is a hose, 20 is a nitrogen pressure reducing valve,
21 is a solvent tank, 22 is a discharge valve, 26 is a three-way ball valve, 24 and 25 are solvent supply valves, 26 is a check valve, 27 is a discharge valve, 28 is a solvent discharge valve, 29 and 30 are stock solution supply ports, 31 and 62 is a suction pipe, 66 is a water supply port, 64 is an exhaust valve, 65 is an offshore filter, 36 is a suction pipe, 3
7 is a pressurizing pipe, 38 is a supply port, 69 is an exhaust valve, 40 is a filter, and 41 is a suction pipe.
Claims (1)
と、水の空気中分散体の加圧輸送装置と、噴霧化混合装
置と、溶剤洗条装置とから成り、前記した水の空気中分
散体の加圧輸送装置において水量を空気圧力、ニードル
バルブ及び流量計を用いて調節し、空気オリフィスの出
口において水を空気中に分散させ、ホース中を輸送した
後噴霧化混合装置より噴霧状に放出することを特徴とす
る発泡塗布装置。It consists of a pressurized liquid delivery device for polyisocyanate containing a prepolymer, a pressurized transportation device for the airborne dispersion of water, an atomization mixing device, and a solvent washing device. Adjusting the amount of water in a pressure transport device using air pressure, a needle valve, and a flow meter, dispersing water into the air at the outlet of an air orifice, transporting it in a hose, and then releasing it in the form of a spray from an atomization mixing device. A foam coating device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3193086A JPS62191060A (en) | 1986-02-18 | 1986-02-18 | Foam coating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3193086A JPS62191060A (en) | 1986-02-18 | 1986-02-18 | Foam coating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62191060A true JPS62191060A (en) | 1987-08-21 |
Family
ID=12344688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3193086A Pending JPS62191060A (en) | 1986-02-18 | 1986-02-18 | Foam coating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62191060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7038381B2 (en) | 2002-01-25 | 2006-05-02 | Noritsu Koki Co., Ltd. | Halogen lamp and method of its manufacture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5876464A (en) * | 1981-10-30 | 1983-05-09 | Mitui Toatsu Chem Inc | Pressurized one-package polyurethane coating and coating method using the same |
| JPS59170153A (en) * | 1983-03-10 | 1984-09-26 | シユランド・オイル・インコ−ポレ−テツド | Adhesion of liquid paint coating to substrate |
-
1986
- 1986-02-18 JP JP3193086A patent/JPS62191060A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5876464A (en) * | 1981-10-30 | 1983-05-09 | Mitui Toatsu Chem Inc | Pressurized one-package polyurethane coating and coating method using the same |
| JPS59170153A (en) * | 1983-03-10 | 1984-09-26 | シユランド・オイル・インコ−ポレ−テツド | Adhesion of liquid paint coating to substrate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7038381B2 (en) | 2002-01-25 | 2006-05-02 | Noritsu Koki Co., Ltd. | Halogen lamp and method of its manufacture |
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