JPH0472Y2 - - Google Patents
Info
- Publication number
- JPH0472Y2 JPH0472Y2 JP1986187126U JP18712686U JPH0472Y2 JP H0472 Y2 JPH0472 Y2 JP H0472Y2 JP 1986187126 U JP1986187126 U JP 1986187126U JP 18712686 U JP18712686 U JP 18712686U JP H0472 Y2 JPH0472 Y2 JP H0472Y2
- Authority
- JP
- Japan
- Prior art keywords
- airflow
- melt blowing
- blowing device
- present
- outer tube
- 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
- 238000009826 distribution Methods 0.000 claims description 19
- 238000007664 blowing Methods 0.000 claims description 18
- 239000000155 melt Substances 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 4
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、溶融した熱可塑性樹脂に高速気流を
噴射することで微細繊維を形成するメルトブロー
装置に関し、更に詳しくは、温度、圧力、速度等
が極めて均一で、且つ、安定した気流の供給を可
能とし、優れた品質のメルトブロー法不織布を得
ることができるメルトブロー装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a melt blowing device that forms fine fibers by injecting high-speed airflow into a molten thermoplastic resin. The present invention relates to a melt blowing device that is capable of supplying an extremely uniform and stable air flow, and is capable of obtaining a melt blown nonwoven fabric of excellent quality.
［従来の技術及び問題点］
メルトブロー法の装置としては、原発明と考え
られるヴアン・Ａ・ヴエンテによるインダストリ
アル，アンド，エンジニアリング，ケミストリ
ー、第48巻、第８号、1342〜1346頁に示されるも
のや、例えば、米国特許第3825379号あるいは米
国特許第3825380号等に開示される装置が著名で
ある。[Prior Art and Problems] An example of an apparatus for melt blowing is the one shown in Industrial, Engineering and Chemistry, Vol. 48, No. 8, pp. 1342-1346 by Van A. Vuente, which is considered to be the original invention. For example, devices disclosed in US Pat. No. 3,825,379 or US Pat. No. 3,825,380 are well known.
しかし、これらの装置は、気流流路の途中に単
に空洞からなる蓄圧室を設けただけの構造のた
め、ノズルオリフイスへの気流の供給にムラが生
じ、その結果、ウエブ斑が生じたり、あるいは、
シヨツトと呼ばれるポリマー粒が生じて、製品の
品位品質を低下せしめる原因となつていた。 However, since these devices have a structure in which a pressure accumulation chamber consisting of a cavity is simply provided in the middle of the air flow path, the air flow is unevenly supplied to the nozzle orifice, resulting in web unevenness or ,
Polymer grains called shots were formed, which caused a decline in the quality of the product.
この問題を解決するものとして、例えば、特公
昭61−1523号には、気流の流路に２重管を設けた
構造を採用し、且つ、ガス分配量を均一に保つた
め、ガス排出口を段階的に増加したり、ガス排出
口の口径を変化せしめた構造の装置が提案されて
いる。 To solve this problem, for example, Japanese Patent Publication No. 1523/1986 adopted a structure in which a double pipe was installed in the air flow path, and in order to maintain a uniform gas distribution amount, a gas outlet was installed. Devices have been proposed in which the amount of gas is increased in stages or the diameter of the gas discharge port is changed.
前記特公昭61−1523号に示されるメルトブロー
装置は、均一な気流の吐出が得られる優れた装置
と考えられるが、気流の圧力や供給量等により、
ガス排出口の設計や製作が困難で装置が高価なも
のとなり、しかも、前記の圧力等の諸条件は、常
に可変状態で使用するため、条件変更により必ず
しも所望の均一状態の気流が得られるものではな
いという欠点があつた。 The melt blowing device shown in the above-mentioned Japanese Patent Publication No. 61-1523 is considered to be an excellent device that can discharge a uniform airflow, but depending on the pressure of the airflow, the amount of supply, etc.
It is difficult to design and manufacture the gas exhaust port, making the device expensive, and since the various conditions such as the pressure mentioned above are constantly being varied, changing the conditions does not necessarily result in the desired uniform airflow. The drawback was that it was not.
このため、本考案は、上記従来技術の欠点を克
服し、どのような条件においても極めて均一な気
流を安定して得られ、しかも、装置を容易且つ確
実に作製することができるメルトブロー装置の提
供を目的とする。 Therefore, the present invention provides a melt blowing device that overcomes the drawbacks of the above-mentioned prior art, can stably obtain extremely uniform airflow under any conditions, and can be manufactured easily and reliably. With the goal.
［問題点を解決するための手段］
本考案は、溶融した熱可塑性樹脂に高速気流を
噴射することで微細繊維を形成するメルトブロー
装置において、該高速気流の供給管が、気流排出
口を有する１本の外管と、気流分配口を有する２
以上の偶数本の内管とからなることを特徴とする
メルトブロー装置に関し、更に好ましくは、該分
配口と該排出口の間に拡散板を設けた構造のメル
トブロー装置に関する。[Means for Solving the Problems] The present invention provides a melt blowing device that forms fine fibers by injecting a high-speed airflow onto a molten thermoplastic resin, in which a supply pipe for the high-speed airflow has an airflow outlet. 2 with a main outer tube and an airflow distribution port
The present invention relates to a melt blowing device characterized by having the above-mentioned even number of inner tubes, and more preferably relates to a melt blowing device having a structure in which a diffusion plate is provided between the distribution port and the discharge port.
［作用および実施例］
以下、本考案による一実施例を示す図面を参照
して詳述するが、本考案は、これらの図面や後に
述べる実施例に限定されるものではない。[Operations and Examples] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these drawings or the embodiments described later.
第１図は本考案の要部である気流の供給管を示
す拡大断面図で、第２図は本考案のメルトブロー
装置の一実施例の全体を示す断面図である。 FIG. 1 is an enlarged cross-sectional view showing an air flow supply pipe, which is a main part of the present invention, and FIG. 2 is a cross-sectional view showing an entire embodiment of the melt blowing apparatus of the present invention.
まず、気流の流路について説明すると、所定温
度に加熱された空気流は、内管１の端部から供給
され、内管１に設けられた気流分配口２から吐出
され、次いで、外管３内で均一に蓄圧されて気流
排出口４を通じて、ノズルオリフイス部６から、
装置外へ高速気流として排出される。 First, to explain the flow path of the airflow, airflow heated to a predetermined temperature is supplied from the end of the inner tube 1, is discharged from the airflow distribution port 2 provided in the inner tube 1, and is then discharged from the outer tube 3. The pressure is uniformly accumulated within the airflow outlet 4 and then from the nozzle orifice 6.
Exhausted as high-velocity airflow outside the device.
第１図において、内管１は円筒形を示している
が、特に形状を限定されるものではなく、装置の
巾に準じた長さを有し、200℃乃至600℃の温度
と、３Kg／cm2乃至20Kg／cm2程度の圧力に耐えられ
る材質のものであれば全て利用することができ、
例えばステンレスパイプ、異形押出し成形パイ
プ、あるいは、アルミニウムの鋳物等で、孔径が
５乃至20mm程度のものが好適に利用される。 In Fig. 1, the inner tube 1 has a cylindrical shape, but the shape is not particularly limited, and it has a length according to the width of the device, and has a temperature of 200°C to 600°C and a temperature of 3 kg/kg. Any material can be used as long as it can withstand pressures between cm 2 and 20 kg/cm 2 .
For example, a stainless steel pipe, a profile extruded pipe, or an aluminum casting having a hole diameter of about 5 to 20 mm is preferably used.
これらの内管１は、何れかの一端に気流の取入
れ口を有し、他の端部が閉鎖されている２以上の
偶数本のものが好適に利用されるが、ここで言う
偶数本とは、気流流路が複数ある材料のことを示
し、見掛け上１本のように見えるものであつて
も、内部が偶数に仕切られた材料等を除外するも
のではない。 These inner tubes 1 have an airflow intake at one end and are closed at the other end, and are preferably an even number of two or more. indicates a material with a plurality of airflow channels, and even if it appears to be one, it does not exclude materials whose interior is partitioned into an even number.
これらの内管１を複数本とすることで、気流が
各々同数の対向流となるように供給することが可
能となり、その結果巾方向に圧力の分布ムラが少
ない均一な気流の供給状態が得られるものであ
る。 By using a plurality of these inner tubes 1, it is possible to supply airflow so that the same number of counterflows are provided, and as a result, a uniform airflow supply state with less uneven pressure distribution in the width direction can be achieved. It is something that can be done.
内管１に設けられた気流分配口２は、気流を更
に均一に分配する作用を有し、直径0.5乃至5.0mm
程度の孔、あるいは、0.2乃至2.0mmのスリツトで
構成される。 The airflow distribution port 2 provided in the inner tube 1 has the function of distributing the airflow more evenly, and has a diameter of 0.5 to 5.0mm.
It consists of a hole of 0.2 to 2.0 mm or a slit of 0.2 to 2.0 mm.
気流分配口２の孔形やスリツト巾、あるいは、
気流の吐出角度等は、装置のサイズ、気流の供給
量、内管１の孔径等に基づき、適宜選択される
が、第１図に示すように、隣接する内管から吐出
された気流が30乃至150°の交差角を有し、外管に
達するまでの位置で混合されるように分配口２を
形成した場合、分配口から吐出された気流が乱流
となり、最も良好な気流分布が得られるので最適
と考えられる。 The hole shape and slit width of the airflow distribution port 2, or
The discharge angle of the airflow, etc. is selected as appropriate based on the size of the device, the amount of airflow supplied, the hole diameter of the inner tube 1, etc., but as shown in Fig. 1, the airflow discharged from the adjacent inner tube is If the distribution port 2 is formed so that it has an intersection angle of 150° to 150° and the air is mixed before reaching the outer tube, the airflow discharged from the distribution port becomes turbulent, and the best airflow distribution is obtained. It is considered to be optimal because it can be done.
次に、外管３について説明すると、外管３は、
気流分配口２から吐出された気流を巾方向に均一
に蓄圧することで、圧力分布をより一層均一なも
のとし、更に、脈流や温度分布のムラを防ぐ作用
を有し、断面の面積が、通常３乃至100cm2のもの
が利用される。 Next, to explain the outer tube 3, the outer tube 3 is as follows.
By accumulating pressure uniformly in the width direction of the airflow discharged from the airflow distribution port 2, the pressure distribution is made even more uniform, and it also has the effect of preventing pulsation and uneven temperature distribution, and the cross-sectional area is reduced. , usually 3 to 100 cm 2 are used.
第２図において外管３は、内管１と同様に円筒
形状のパイプにより構成されているが、これも
又、パイプ構造体に限定されるものではなく、気
流分配口２から吐出された気流を蓄圧して均一に
気流排出口４からノズルオリフイス部６へ移送で
きる構造であれば任意に設定することができる。
又、特に外管としての部材を使用せず、装置の構
造として、ノズルオリフイス部６に通じる空間を
設定して、外管３に代替した場合も、本考案の外
管としてこれらの空間が機能するため、本考案の
言う外管がこれらの構造をも含むものであること
は言うまでもない。 In FIG. 2, the outer tube 3 is composed of a cylindrical pipe like the inner tube 1, but this is also not limited to a pipe structure, and the air flow discharged from the air flow distribution port 2 Any structure can be used as long as the pressure can be accumulated and uniformly transferred from the airflow outlet 4 to the nozzle orifice section 6.
Furthermore, even if a space communicating with the nozzle orifice portion 6 is set in the structure of the device without using any member as an outer tube, and the outer tube 3 is substituted, these spaces function as the outer tube of the present invention. Therefore, it goes without saying that the outer tube referred to in the present invention includes these structures.
本考案は、気流流路を上述の如く構成すること
で、従来よりも格段に均一且つ安定したメルトブ
ロー装置を確立するものであるが、更に好適な態
様としては、内管１と気流排出口４との間に、細
孔７を有する拡散板５を設ける構造が推奨され
る。 The present invention establishes a melt blowing device that is much more uniform and stable than the conventional one by configuring the airflow channel as described above, but as a more preferable embodiment, the inner pipe 1 and the airflow outlet 4 A structure in which a diffusion plate 5 having pores 7 is provided between the two is recommended.
拡散板５の設置により、装置の巾方向における
気流の均一化は、圧力、速度、温度等の全ての面
で、極めて優れたものとなる。又、外管３内にお
いて、拡散板５を境界として、蓄圧部が２重に形
成されることとなるので、脈流によるトラブル等
を完全に防ぐことができる。しかも、この拡散板
５を、内管１の支持体としても利用することがで
きるので、２重構造でやや複雑な形状であつて
も、非常に装置の作製が容易になるという長所を
有する。 By installing the diffusion plate 5, the uniformity of airflow in the width direction of the device is extremely excellent in all aspects such as pressure, speed, temperature, etc. Moreover, since the pressure accumulation part is formed in two layers within the outer tube 3 with the diffusion plate 5 as a boundary, troubles caused by pulsating flow can be completely prevented. Furthermore, since the diffusion plate 5 can also be used as a support for the inner tube 1, it has the advantage that even if it has a double structure and a somewhat complicated shape, the device can be manufactured very easily.
拡散板５としては、金属製の多孔板で孔径が１
乃至５mm程度のものが好適に利用されるが、金属
メツシユを数枚積層したものやセラミツクの多孔
焼結体等も利用することができる。 The diffusion plate 5 is a metal porous plate with a hole diameter of 1.
A material having a diameter of about 5 mm to 5 mm is preferably used, but a material made by laminating several metal meshes, a porous sintered body of ceramic, etc. can also be used.
前記気流排出口４を経た気流は、ノズルオリフ
イス部６から装置外へ噴出するが、排出口４とオ
リフイス部６との間に、第２図に示すようにトラ
ツプ８や、あるいは、多孔質の整流体等を適宜設
けることができる。 The airflow that has passed through the airflow outlet 4 is ejected from the nozzle orifice 6 to the outside of the device, but between the outlet 4 and the orifice 6 there is a trap 8 or a porous A flow regulator or the like may be provided as appropriate.
気流の流路を以上の構成とすることにより、装
置の巾方向における気流の圧力や温度等の分布ム
ラは実質的に認められず、また、本考案の装置に
より得られるメルトブローウエブは、シヨツトが
無く、極めて均一な繊度と単繊維配向度を有す
る。 By configuring the air flow path as described above, there is virtually no unevenness in the distribution of air flow pressure, temperature, etc. in the width direction of the device, and the melt blown web obtained by the device of the present invention has a smooth shot. It has extremely uniform fineness and single fiber orientation.
従つて、本考案は、気流の均一化を主眼とする
ことにより、従来よりも格段に製品品質を高める
ことができるメルトブロー装置を提供するもので
ある。 Therefore, the present invention provides a melt blowing device that can significantly improve product quality compared to the conventional method by focusing on uniformity of airflow.
［考案の効果］
本考案のメルトブロー装置は、上述の構成によ
り、極めて均一な、圧力、速度、及び温度の気流
を噴射するため、シヨツト等の発生が皆無で、生
産を安定させ、しかも、製品の品質を高めるとい
う優れた効果を有する。[Effects of the invention] The melt blowing device of the present invention has the above-mentioned configuration and injects airflow with extremely uniform pressure, velocity, and temperature, so there is no occurrence of shots, etc., stabilizing production, and improving product quality. It has the excellent effect of improving the quality of
また、製作面においても、従来のように気流流
路における臨界的に計算された装置設計を必要と
せず、複数の管状体を組合せることで容易に製作
できるため、均一気流を得るための誤差許容範囲
が広く、既存の設備にも非常に適合性が高い。 In addition, in terms of manufacturing, there is no need for critically calculated equipment design in the airflow channel as in the past, and it can be easily manufactured by combining multiple tubular bodies, so there are no errors in obtaining uniform airflow. It has a wide tolerance and is highly compatible with existing installations.
従つて、本考案のメルトブロー装置は、均一気
流が確実に得られ、しかも非常に実用性の高い画
期的な装置である。 Therefore, the melt blowing device of the present invention is an epoch-making device that can reliably obtain a uniform airflow and is highly practical.
第１図は本考案の要部である気流の供給管を示
す拡大断面図で、第２図は本考案のメルトブロー
装置の一例を示す断面図である。
図中の数字は、１……内管、２……気流分配
口、３……外管、４……気流排出口、５……拡散
板、６……ノズルオリフイス部、７……細孔、８
……トラツプ。
FIG. 1 is an enlarged sectional view showing an airflow supply pipe, which is a main part of the present invention, and FIG. 2 is a sectional view showing an example of the melt blowing device of the present invention. The numbers in the diagram are 1...inner tube, 2...airflow distribution port, 3...outer tube, 4...airflow outlet, 5...diffusion plate, 6...nozzle orifice, 7...pore , 8
...Trap.
Claims (1)
ことで微細繊維を形成するメルトブロー装置に
おいて、該高速気流の供給管が、気流排出口を
有する外管と、該外管内に配され、気流分配口
を有する２以上の偶数本の内管とからなること
を特徴とするメルトブロー装置。 (2) 隣接する内管内を、気流が互いに対向するよ
うに供給される構造の実用新案登録請求の範囲
第１項記載のメルトブロー装置。 (3) 隣接する内管の気流分配口から吐出された気
流が30乃至150°の交差角を有するように気流分
配口が形成された構造の実用新案登録請求の範
囲第１項記載のメルトブロー装置。[Claims for Utility Model Registration] (1) In a melt blowing device that forms fine fibers by spraying a high-speed airflow onto a molten thermoplastic resin, the supply pipe for the high-speed airflow has an outer pipe having an airflow outlet; A melt blowing device comprising an even number of two or more inner tubes arranged within the outer tube and each having an air flow distribution port. (2) The melt blowing apparatus according to claim 1, which is a utility model, and has a structure in which airflows are supplied to the adjacent inner tubes so as to be opposed to each other. (3) The melt blowing device according to claim 1 of the utility model registration claim, having a structure in which the airflow distribution ports are formed so that the airflow discharged from the airflow distribution ports of adjacent inner pipes has an intersection angle of 30 to 150°. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986187126U JPH0472Y2 (en) | 1986-12-03 | 1986-12-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986187126U JPH0472Y2 (en) | 1986-12-03 | 1986-12-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6394992U JPS6394992U (en) | 1988-06-18 |
| JPH0472Y2 true JPH0472Y2 (en) | 1992-01-06 |
Family
ID=31137313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986187126U Expired JPH0472Y2 (en) | 1986-12-03 | 1986-12-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0472Y2 (en) |
-
1986
- 1986-12-03 JP JP1986187126U patent/JPH0472Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6394992U (en) | 1988-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100375975B1 (en) | Die for extruding a fluid stream | |
| US4043739A (en) | Distributor for thermoplastic extrusion die | |
| US8591213B2 (en) | Apparatus and process for the production of a non-woven fabric | |
| US3942723A (en) | Twin chambered gas distribution system for melt blown microfiber production | |
| JP3154573B2 (en) | Melt blown die head | |
| GB1285381A (en) | Process for the manufacture of continous filaments | |
| JPS63275762A (en) | Apparatus for producing spun fleece from synthetic endless filament | |
| JP2005517096A (en) | Forming system for producing thermoplastic nonwoven webs and laminates | |
| CN110541241B (en) | Apparatus and method for making spunbond nonwoven fabrics from continuous filaments | |
| US3731517A (en) | Method of fabricating a fluid dispersion nozzle | |
| CN100352557C (en) | Nozzle arrangement | |
| JPH0472Y2 (en) | ||
| TW200415269A (en) | Melt-blow head | |
| JPH02145807A (en) | Method and apparatus for melting-spinning | |
| CN1576391B (en) | Gas injector for use in semiconductor fabricating apparatus | |
| JPH0473Y2 (en) | ||
| US4168138A (en) | Spray spinning nozzle using parallel jet flow | |
| DE2032346C3 (en) | Cooling device for tubular plastic films produced by means of a film blow head | |
| JP2001200422A (en) | Cooling device for hollow fiber and method for producing hollow fiber | |
| EP3778034B1 (en) | Gas blowout nozzle and furnace, and method for manufacturing processed film | |
| JPH04257306A (en) | Control rod and sealing device for melt spray die device | |
| US3709970A (en) | Apparatus and method for quenching and stabilizing extruded molten filaments | |
| FI72800B (en) | VENTILATIONSROER. | |
| US6652630B1 (en) | Device for degassing melts | |
| JP2975433B2 (en) | Non-woven fabric manufacturing equipment |