JP2656823B2 - Rectangular composite spinneret - Google Patents
Rectangular composite spinneretInfo
- Publication number
- JP2656823B2 JP2656823B2 JP64000506A JP50689A JP2656823B2 JP 2656823 B2 JP2656823 B2 JP 2656823B2 JP 64000506 A JP64000506 A JP 64000506A JP 50689 A JP50689 A JP 50689A JP 2656823 B2 JP2656823 B2 JP 2656823B2
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- plate
- distribution
- component
- width direction
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、２種類の熱可塑性ポリマーを原料とする２
成分複合繊維から成るスパンボンド不織布の製造に適し
た広巾で紡糸孔数が極めて多く生産性に富み、しかも単
糸間の繊度、複合比の均一性に優れた矩形複合紡糸口金
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for preparing two types of thermoplastic polymers from raw materials.
The present invention relates to a rectangular composite spinneret having a wide width suitable for the production of a spunbonded nonwoven fabric composed of component composite fibers, having a very large number of spinning holes, having high productivity, and having excellent uniformity of fineness and composite ratio between single yarns.
〔従来の技術〕 一種類の熱可塑性ポリマーを原料とする繊維から成る
スパンボンド不織布の製造プロセスにおいては、例え
ば、特公昭53−44574号公報、特公昭53−44575号公報の
様に、紡糸口金の長辺が500〜3000mm（紡糸孔数1000〜1
0000個）である矩形紡糸口金装置が使用されている。[Background Art] In a process for producing a spunbonded nonwoven fabric composed of fibers made of one kind of thermoplastic polymer, for example, a spinneret is disclosed in Japanese Patent Publication No. 53-44574 and Japanese Patent Publication No. 53-44575. 500-3000mm (number of spinning holes 1000-1
0000) is used.
また、２成分複合繊維を得るための紡糸口金装置に
は、例えば鞘芯型（特公昭52−31450号公報、特公昭62
−37126号公報）、並列型（特開昭49−12107号公報、特
開昭62−156306号公報）、偏心鞘芯型（実開昭62−1557
7号公報）のものなど多数例示されている。In addition, a spinneret device for obtaining a bicomponent conjugate fiber is, for example, a sheath-core type (Japanese Patent Publication No. 52-31450, Japanese Patent Publication No. Sho 62-62).
-37126), parallel type (JP-A-49-12107, JP-A-62-156306), eccentric sheath-core type (actual open-ended 62-1557)
No. 7 publication).
２成分複合繊維を得るための紡糸口金装置は前述のよ
うに多数提案されているが、単一成分繊維の紡糸口金に
比べ構造が複雑であったり、構成部品数が多くなったり
するため、比較的小型のもので、糸条吐出面に対する紡
糸孔数も少ないものに限られており、高生産性を維持す
るために大型かつ紡糸孔数を極端に増やす事が必要なス
パンボンド不織布の製造には不向きであった。従来、２
成分複合繊維から成る広巾なスパンボンド不織布を得よ
うとする場合、多数の小型の紡糸口金を巾方向に並べて
取付ける方法によっていたが、この方法では紡糸口金の
取付け、取外しに際し多大な労力と時間を費やすばかり
でなく、紡糸口金相互の間には紡糸孔が存在しないた
め、紡糸孔数を増やし生産性を向上させるのにも限界が
あり、またこの紡糸口金相互の間は糸条が疎となるため
得らる不織布には巾方向の目付の不均一性が生じやす
い。As described above, many spinnerets for obtaining bicomponent conjugate fibers have been proposed. It is limited to those that are very small and have a small number of spinning holes with respect to the yarn discharge surface, and is used for the production of spunbond nonwoven fabrics that require a large and extremely large number of spinning holes to maintain high productivity. Was unsuitable. Conventionally, 2
When trying to obtain a wide spunbond nonwoven fabric composed of component conjugate fibers, a number of small spinnerets were arranged side by side in the width direction. In addition to spending, there are no spinning holes between the spinnerets, so there is a limit in increasing the number of spinning holes and improving productivity, and the yarns between the spinnerets are sparse. Therefore, the obtained nonwoven fabric tends to have nonuniformity in the basis weight in the width direction.
本発明の目的は、上記の従来技術における欠点を解決
し、且つ、２成分複合繊維から成るスパンボンド不織布
の製造に適する広巾で紡糸孔数が多く生産性に富み、し
かも単糸間の繊度、複合比の均一性に優れた矩形複合紡
糸口金を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks in the prior art and to increase the number of spinning holes and wide productivity suitable for the production of a spunbonded nonwoven fabric composed of bicomponent composite fibers, and furthermore, the fineness between single yarns. It is an object of the present invention to provide a rectangular composite spinneret having excellent composite ratio uniformity.
本発明は、２成分複合繊維紡糸用の矩形複合紡糸口金
であって、各成分複数個のポリマー流入口が巾方向にわ
たって前後２列に同数個配置しているパック蓋１、その
１つ１つのポリマー流入口に対応して、等容積に分割さ
れた濾材、フイルター３支持体をかねるポリマー滞留室
５、および後記分配板10へポリマーを導くポリマー孔6
A、6Bを有すブレーカプレート７、Ａ成分分配溝8AとＢ
成分分配溝8Bが交互に平行かつ等間隔に前後方向に削設
され、該分配溝から下面にわたって後記紡糸口金板２ポ
リマー合流部11へポリマーを導くポリマー孔9A、9Bが穿
孔された分配板10、上面に２ポリマー合流部11を有し該
合流部より下面にわたって２成分複合繊維紡糸吐出孔12
が穿孔された紡糸口金板13、およびこれらを収納するパ
ック14から成り、前後ブレーカープレートの巾方向に並
ぶ各成分のポリマー滞留室は、前後する他の成分の滞留
室に対して分配板上面のＡ成分分配溝とＢ成分分配溝の
間隔だけ巾方向にずれて位置し、巾方向に隣接する滞留
空間の分割壁近辺のポリマー孔6A、6Bは、その下面で接
する分配板上面の分配溝に対応する等間隔となるよう分
割壁下部において巾方向に斜行している事を特徴とする
矩形複合紡糸口金である。The present invention relates to a rectangular composite spinneret for spinning a two-component composite fiber, in which a plurality of polymer inlets for each component are arranged in the front and rear two rows in the width direction in the same number of pack lids 1, each one of which is provided. In correspondence with the polymer inlet, a filter medium divided into equal volumes, a filter 3, a polymer retention chamber 5 serving also as a support, and a polymer hole 6 for guiding the polymer to a distribution plate 10 described later.
Breaker plate 7 having A and 6B, A component distribution grooves 8A and B
The component distribution grooves 8B are alternately cut in parallel and at equal intervals in the front-rear direction, and the distribution plate 10 is provided with polymer holes 9A and 9B for guiding the polymer from the distribution grooves to the spinneret plate 2 polymer confluence portion 11 described below over the lower surface. A bi-component conjugate fiber spinning discharge hole 12 having a two-polymer junction 11 on the upper surface and extending from the junction to the lower surface.
Is composed of a spinneret plate 13 in which holes are perforated, and a pack 14 for accommodating them. The polymer holes 6A and 6B near the dividing wall of the staying space adjacent in the width direction are positioned to be shifted from each other in the width direction by the distance between the A component distribution groove and the B component distribution groove. A rectangular composite spinneret characterized by being inclined obliquely in the width direction at the lower part of the divided wall so as to have a corresponding interval.
以下、本発明の実施態様の一例を添付した図面に従っ
て説明する。An embodiment of the present invention will be described below with reference to the accompanying drawings.
２種類の紡糸ポリマー（以下Ａ成分・Ｂ成分という）
は、個々に計量された一定量がパック蓋１に設けられた
各成分複数個のポリマー流入口2A、2Bよりブレーカープ
レート４のポリマー滞留室5A、5Bに導かれる。パック蓋
１には第２図に示すようにＡ成分のポリマー流入口（2
A）、Ｂ成分のポリマー流入口（2B）が前後２列に同数
個並べられている。またブレーカープレート４のポリマ
ー滞留室5A、5Bはパック蓋ポリマー流入口2A、2Bの各々
に対応して等容積に分割され濾材・フイルター支持体を
兼ねるものである。ポリマー滞留室に支持された濾材あ
るいは金網フイルターによって濾過された両ポリマー
は、ポリマー滞留室からブレーカープレート下面へ連な
るポリマー孔6A、6Bを通り、分配板10上面に穿設された
Ａ成分分配溝8A、Ｂ成分分配溝8Bに入る。Ａ成分分配溝
8A、Ｂ成分分配溝8Bは交互に平行かつ等間隔に前後方向
に削設されており、この部分で前後方向に広げられたポ
リマー流は、分配溝8A、8Bから分配板10の下面に連なる
ポリマー孔9A、9Bを通り紡糸口金板13上面に設けられた
２液合流部11に導かれる。この部分で合流した２液は一
体流となり紡糸口金板紡糸吐出孔から２成分複合繊維と
して紡糸される。Two kinds of spun polymers (hereinafter referred to as A component and B component)
A predetermined amount of each of the components is guided to polymer retention chambers 5A and 5B of the breaker plate 4 from a plurality of polymer inlets 2A and 2B of each component provided in the pack lid 1. As shown in FIG. 2, the pack lid 1 has a polymer inlet (2
The same number of polymer inlets (2B) for components A) and B are arranged in two rows before and after. The polymer retaining chambers 5A and 5B of the breaker plate 4 are divided into equal volumes corresponding to the pack lid polymer inlets 2A and 2B, respectively, and also serve as a filter medium / filter support. Both polymers filtered by the filter medium or the wire mesh filter supported by the polymer retention chamber pass through the polymer holes 6A and 6B from the polymer retention chamber to the lower surface of the breaker plate, and the A component distribution grooves 8A formed on the upper surface of the distribution plate 10 , B component distribution groove 8B. A component distribution groove
The 8A and B component distribution grooves 8B are alternately cut in the front-rear direction at parallel and equal intervals, and the polymer flow spread in the front-rear direction at this portion continues from the distribution grooves 8A and 8B to the lower surface of the distribution plate 10. It is guided through the polymer holes 9A and 9B to the two-liquid junction 11 provided on the upper surface of the spinneret plate 13. The two liquids merged in this portion become an integrated flow and are spun as a bicomponent composite fiber from the spinneret plate spinning discharge hole.
本発明の第一の特徴は、ブレーカープレート７のポリ
マー滞留室5A、5Bをパック蓋のポリマー流入口2A、2Bに
対応して等容積に分割した事にある。この様にする事に
よって、一定量計量され各々パック蓋ポリマー流入口2
A、2Bよりポリマー滞留室5A、5Bへ導かれる両ポリマー
は隣接する流入口とは完全に分離されているために隣の
ポリマー滞留室へ移動することはなく、しかも各室に等
容積に分割されているため計量された一定量のポリマー
が異常滞留することなく等しい滞留時間で通過する。す
なわち、滞留時間差に起因するポリマーの熱分解あるい
はゲル化を極力防止することができ、結果的に各紡糸孔
からの吐出斑をなくし単糸間の繊度、複合比を均一にし
不織布とする場合は布の巾方向における目付分布他諸物
性値の均一性を向上することができる。A first feature of the present invention resides in that the polymer retaining chambers 5A and 5B of the breaker plate 7 are divided into equal volumes corresponding to the polymer inlets 2A and 2B of the pack lid. In this way, a fixed amount is measured and each of the pack lid polymer inlet 2
Both polymers guided from A and 2B to polymer retention chambers 5A and 5B are completely separated from the adjacent inlet, so they do not move to the adjacent polymer retention chamber, and are divided into equal volumes in each chamber As a result, a certain amount of the measured polymer passes with equal residence time without abnormal residence. In other words, when the thermal decomposition or gelation of the polymer due to the difference in residence time can be prevented as much as possible, as a result, the unevenness of discharge from each spinning hole is eliminated, the fineness between single yarns, the composite ratio is uniform, and the nonwoven fabric is used. The uniformity of the basis weight distribution and other physical property values in the width direction of the cloth can be improved.
本発明の第二の特徴は、各ポリマー滞留室は前後する
他成分の滞留室に対して分配板上面のＡ成分分配溝とＢ
成分分配溝の１ピッチ分だけずらして位置し隣接する同
成分の滞留室間の分割壁近辺のポリマー孔はその下面で
接する分配板上面の分配溝に対応するピッチで等間隔と
なるよう巾方向に斜行している事にある。スパンボンド
不織布製造のためには高生産性が要求されるため紡糸口
金吐出面に対する紡糸孔数をできるだけ多くする事を望
まれる。そのためには、紡糸口金板における紡糸孔穿設
のピッチを小さくする事が必要であり、これに対応して
分配板ポリマー孔、分配板分配溝、ブレーカープレート
・ポリマー孔のピッチも自ずと決定される。しかし、ブ
レーカープレート７のポリマー滞留室5A、5Bを前述の様
に各々分割するにあたっては隣接する滞留空間の分割壁
に強度的に十分な肉厚を持たせる事が必要であり、この
分割壁の真下の部分においては巾方向の紡糸孔ピッチが
不等間隔となってしまったり（第３図ａ）、これを等間
隔とするためには全体的に紡糸孔ピッチを広くとらなけ
ればならなくなり（第３図ｂ）紡糸孔数を増やすことが
できず生産性の乏しい紡糸口金しか得られない。そこ
で、この分割近辺のブレーカープレート・ポリマー孔6
A、6Bを該分割壁下部において巾方向に斜行する孔とす
れば、分割壁の肉厚に制限されることなく紡糸孔穿設ピ
ッチを小さくでき紡糸孔数増し生産性の高いものとする
事ができる。また、巾方向に隣接する同種ポリマーの滞
留空間の分割壁は、前後する他の成分の滞留室に対して
分配板上面のＡ成分分配溝とＢ成分分配溝の間隔だけす
らして配置することにより、分割壁下部での斜行孔の数
と角度を最小限に抑え製作費を低減することができる。The second feature of the present invention is that each of the polymer retaining chambers has an A component distribution groove and a B
The polymer holes in the vicinity of the dividing wall between the adjacent chambers of the same component which are shifted by one pitch of the component distribution grooves are arranged at equal intervals at the pitch corresponding to the distribution grooves on the upper surface of the distribution plate contacting the lower surface thereof. It is skewed. Since high productivity is required for manufacturing a spunbonded nonwoven fabric, it is desired to increase the number of spinning holes with respect to the spinneret discharge surface as much as possible. For that purpose, it is necessary to reduce the pitch of the spinning holes in the spinneret plate, and accordingly, the pitch of the distribution plate polymer holes, the distribution plate distribution grooves, and the breaker plate / polymer holes is naturally determined. . However, when dividing the polymer retaining chambers 5A and 5B of the breaker plate 7 as described above, it is necessary to make the divided walls of the adjacent retaining spaces have a sufficient thickness in terms of strength. In the portion directly below, the spinning hole pitch in the width direction becomes unequally spaced (FIG. 3a), and in order to make it equal, the spinning hole pitch must be widened as a whole ( FIG. 3b) The number of spinning holes cannot be increased, and only a spinneret with low productivity can be obtained. Therefore, the breaker plate and polymer hole 6 near this division
If A and 6B are holes obliquely inclined in the width direction at the lower part of the dividing wall, the spinning hole drilling pitch can be reduced without being limited by the wall thickness of the dividing wall, thereby increasing the number of spinning holes and increasing the productivity. Can do things. In addition, the dividing wall of the staying space of the same kind of polymer adjacent in the width direction should be arranged even at the distance between the A-component distribution groove and the B-component distribution groove on the upper surface of the distribution plate with respect to the remaining chambers of other components before and after. Thereby, the number and angle of the oblique holes at the lower part of the dividing wall can be minimized, and the manufacturing cost can be reduced.
本発明の第三の特徴は、本複合紡糸口金装置の一式の
うち紡糸口金板１枚（または分配板を含めた２枚）を交
換することによって鞘芯型、並列型（サイド−バイ−サ
イド型）、偏心鞘芯型等の種々の断面形状をもつ複合繊
維が紡糸可能である点にあり、要求される不織布の強度
物性、熱接着性、巻縮嵩高性等の諸特性に応じて不織布
の構成フィラメントの断面形状をコントロールすること
が可能で極めて経済的である。A third feature of the present invention is that, by replacing one spinneret plate (or two sheets including a distribution plate) in the set of the composite spinneret device, a sheath-core type and a parallel type (side-by-side) are realized. ) And eccentric sheath-core type, so that composite fibers with various cross-sectional shapes can be spun, and the non-woven fabric can be used in accordance with the required properties such as strength properties, heat adhesion, and crimp bulkiness of the non-woven fabric. It is possible to control the cross-sectional shape of the constituent filament, and it is very economical.
第１図ａは本発明の複合紡糸口金の前後方向断面図、第
１図ｂは本発明の複合紡糸口金の巾方向断面図、第２図
ａはパック蓋１の上面図、第２図ｂはブレーカープレー
ト７の上面図、第３図a,bはブレーカープレート・ポリ
マーの穿孔方式と紡糸口金板紡糸孔ピッチの関係を示す
模式図である。FIG. 1a is a cross-sectional view of the composite spinneret of the present invention in the front-rear direction, FIG. 1b is a cross-sectional view of the composite spinneret of the present invention in the width direction, FIG. 2a is a top view of the pack lid 1, FIG. Fig. 3 is a top view of the breaker plate 7, and Figs. 3a and 3b are schematic diagrams showing the relationship between the breaker plate / polymer perforation method and the spinneret plate spinning hole pitch.
Claims (1)
であって、各成分複数個のポリマー流入口が巾方向にわ
たって前後２列に同数個配置しているパック蓋１、その
１つ１つのポリマー流入口2A、2Bに対応して、等容積に
分割された濾材、フイルター３支持体をかねるポリマー
滞留室5A、5B、および後記分配板10へポリマーを導くポ
リマー孔6A、6Bを有すブレーカープレート７、上面にＡ
成分分配溝8AとＢ成分分配溝8Bが交互に平行かつ等間隔
に前後方向に削設され、該分配溝から下面にわたって後
記紡糸口金板２ポリマー合流部11へポリマーを導くポリ
マー孔9A、9Bが穿孔された分配板10、上面に２ポリマー
合流部11を有し該合流部より下面にわたって２成分複合
繊維紡糸吐出孔12が穿孔された紡糸口金板13、およびこ
れらを収納するパック14から成り、前記ブレーカープレ
ートの巾方向に並ぶ各成分のポリマー滞留室は、前後す
る他の成分の滞留室に対して分配板上面のＡ成分分配溝
とＢ成分分配溝の間隔だけ巾方向にずれて位置し、巾方
向に隣接する滞留室間の分割壁近辺のポリマー孔6A、6B
は、その下面で接する分配板上面の分配溝に対応する等
間隔となるよう分割壁下部において巾方向に斜行してい
る事を特徴とする矩形複合紡糸口金1. A rectangular composite spinneret for spinning a two-component composite fiber, in which a plurality of polymer inlets each having a plurality of components are arranged in the front and rear two rows in the width direction. Each of the polymer inlets 2A and 2B has a filter medium divided into equal volumes, polymer retention chambers 5A and 5B serving also as a support for the filter 3, and polymer holes 6A and 6B for guiding the polymer to the distribution plate 10 described later. Breaker plate 7, A on top
The component distribution grooves 8A and the B component distribution grooves 8B are alternately cut in parallel and at equal intervals in the front-rear direction, and polymer holes 9A and 9B for guiding the polymer from the distribution grooves to the spinneret plate 2 polymer confluence section 11 described below over the lower surface are formed. A perforated distribution plate 10, a spinneret plate 13 having a two-polymer confluent portion 11 on the upper surface, a perforated bicomponent conjugate fiber spinning discharge hole 12 over the lower surface from the confluent portion, and a pack 14 for accommodating these. The polymer retention chambers of the respective components arranged in the width direction of the breaker plate are shifted in the width direction by an interval between the A component distribution groove and the B component distribution groove on the upper surface of the distribution plate with respect to the other component chambers before and after. , Polymer holes 6A, 6B near the dividing wall between the staying chambers adjacent in the width direction
Is a rectangular composite spinneret characterized in that it is skewed in the width direction at the lower part of the dividing wall so as to be at an equal interval corresponding to the distribution groove on the upper surface of the distribution plate that contacts the lower surface thereof
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP64000506A JP2656823B2 (en) | 1989-01-06 | 1989-01-06 | Rectangular composite spinneret |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP64000506A JP2656823B2 (en) | 1989-01-06 | 1989-01-06 | Rectangular composite spinneret |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02182911A JPH02182911A (en) | 1990-07-17 |
| JP2656823B2 true JP2656823B2 (en) | 1997-09-24 |
Family
ID=11475652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP64000506A Expired - Lifetime JP2656823B2 (en) | 1989-01-06 | 1989-01-06 | Rectangular composite spinneret |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2656823B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005534817A (en) * | 2002-06-20 | 2005-11-17 | スリーエム イノベイティブ プロパティズ カンパニー | Nonwoven web die and nonwoven web produced thereby |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19750724C2 (en) * | 1997-11-15 | 2003-04-30 | Reifenhaeuser Masch | Device for producing a spunbonded fabric from bicomponent threads having a core-sheath structure |
| US6461133B1 (en) * | 2000-05-18 | 2002-10-08 | Kimberly-Clark Worldwide, Inc. | Breaker plate assembly for producing bicomponent fibers in a meltblown apparatus |
| US6474967B1 (en) * | 2000-05-18 | 2002-11-05 | Kimberly-Clark Worldwide, Inc. | Breaker plate assembly for producing bicomponent fibers in a meltblown apparatus |
-
1989
- 1989-01-06 JP JP64000506A patent/JP2656823B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005534817A (en) * | 2002-06-20 | 2005-11-17 | スリーエム イノベイティブ プロパティズ カンパニー | Nonwoven web die and nonwoven web produced thereby |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02182911A (en) | 1990-07-17 |
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