JPS63145466A - Production of long fiber nonwoven fabric - Google Patents
Production of long fiber nonwoven fabricInfo
- Publication number
- JPS63145466A JPS63145466A JP61286907A JP28690786A JPS63145466A JP S63145466 A JPS63145466 A JP S63145466A JP 61286907 A JP61286907 A JP 61286907A JP 28690786 A JP28690786 A JP 28690786A JP S63145466 A JPS63145466 A JP S63145466A
- Authority
- JP
- Japan
- Prior art keywords
- fiber nonwoven
- nonwoven web
- nonwoven fabric
- long
- long fiber
- 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
- 239000000835 fiber Substances 0.000 title claims description 42
- 239000004745 nonwoven fabric Substances 0.000 title claims description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229920001169 thermoplastic Polymers 0.000 claims description 10
- 150000001450 anions Chemical class 0.000 claims description 7
- 150000001768 cations Chemical class 0.000 claims description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 24
- 238000011282 treatment Methods 0.000 description 19
- 238000009987 spinning Methods 0.000 description 10
- 239000004744 fabric Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 241000257465 Echinoidea Species 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 206010049040 Weight fluctuation Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- -1 polyphenylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は長繊維不織布の製造方法に関する。更に詳しく
は、異方性がとくに少なく、かつ目付変動率が小さい優
れた長繊維不織布の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing a long fiber nonwoven fabric. More specifically, the present invention relates to a method for producing an excellent long-fiber nonwoven fabric that has particularly low anisotropy and a small rate of variation in area weight.
熱可塑性繊維の連続フィラメントより成る長繊維不織布
の製造方法は、ダイレクトフアプリケーションとかスパ
ンボンド法などと称され種々提案されており、工業的生
産に適用されている。これらの多くは、熱可塑性繊維の
連続フィラメントを溶融紡糸し、これを捕集して不織ウ
ェッブとした後、フィラメント間を接合させたり交絡さ
せたりして主として長繊維より成る長繊維不繊布を製造
するものである。しかし、この方法においては以下に述
べるように多くの問題があった。Various methods for producing long-fiber nonwoven fabrics made of continuous filaments of thermoplastic fibers have been proposed, such as direct application and spunbond methods, and have been applied to industrial production. In most of these, continuous filaments of thermoplastic fibers are melt-spun, collected to form a nonwoven web, and then the filaments are joined or intertwined to create a long fiber nonwoven fabric mainly consisting of long fibers. It is manufactured. However, this method has many problems as described below.
（１）斑；溶融紡糸されたフィラメントを広げて工業的
に必要とされる幅、例えば１〜５ｍ、のシートを得るに
は幅方向に長い矩形の紡糸装置を設けるか、複数の紡糸
装置を幅方向に配列する方法が一般的に行われており、
フィラメント間や鍾間の相互干渉や紡糸するのに使用さ
れた流体の部分的乱流あるいは静電気による斥力や引力
によりどうしても幅方向の目付変動率が高くなるという
致命的な問題があった。(1) Spots: In order to spread melt-spun filaments and obtain sheets with an industrially required width, for example, 1 to 5 m, a rectangular spinning device long in the width direction or multiple spinning devices are required. A commonly used method is to arrange them in the width direction.
There has been a fatal problem in that the rate of variation in fabric weight in the width direction inevitably increases due to mutual interference between filaments or spuns, partial turbulence of the fluid used for spinning, or repulsion or attraction due to static electricity.
（２）耳ロスと耳部不均一性；ウェッブの幅方向の端い
わゆる耳部は、一般に捕集装置の端に設けられた反射板
やエアーカーテンなどによる物理的な規制によって形成
されるが、この部分の積層が不均一となり、繊維配列も
中央部と異なるため多くの部分を耳ロスとして処分する
必要があり、収率低下の大きな要因の一つになっていた
。(2) Ear loss and non-uniformity of the edges: The so-called ears at the edges of the web in the width direction are generally formed by physical regulation using a reflector or air curtain provided at the end of the collection device. Since the lamination in this part is uneven and the fiber arrangement is different from that in the central part, it is necessary to dispose of a large portion as selvage loss, which is one of the major causes of lower yields.
（３）異方性；連続フィラメントを溶融紡糸しこれを捕
集することによって得られた不織ウェッブはそれを構成
するフィラメントがどうしてもウェッブの進行方向（以
下タテ方向と称する）に向かって配列しやすく、それ以
後の絡合工程、熱処理工程、染色工程、乾燥工程などで
加わる張力によって益々タテ方向のフィラメントが増大
し、この結果得られた長繊維不織布はその引張強力に於
いてタテ方向がウェッブの進行方向に対して直角方向（
以下ヨコ方向と称する）に比し著しく大きい（そして／
又は）その伸度に於いてヨコ方向がタテ方向に比し著し
く大きいといった、いわゆる異方性の問題があった。(3) Anisotropy: In a nonwoven web obtained by melt-spinning and collecting continuous filaments, the constituent filaments are inevitably aligned in the direction in which the web travels (hereinafter referred to as the vertical direction). The number of filaments in the vertical direction increases due to the tension applied in the subsequent entanglement process, heat treatment process, dyeing process, drying process, etc., and the resulting long fiber nonwoven fabric has a tensile strength that is similar to that of the web in the vertical direction. perpendicular to the direction of travel (
(hereinafter referred to as the horizontal direction) is significantly larger (and/
Or) there was a problem of so-called anisotropy, in which the elongation was significantly greater in the horizontal direction than in the vertical direction.
（４）品種切り換えロス；製品の目付や幅等の所謂品種
に関する市場の要求は益々多様化する方向にある。しか
し、製品幅は設備で限定されるので、予め市場要求の最
大の幅が生産可能な設備を設ける必要があり設備費が高
く設備生産性が低く、より広い幅のシートを要求幅に合
わせる為に耳カットによるロスが多く収率が低い、とい
ったコスト高をまねく要因があった。(4) Product type switching loss: Market demands regarding so-called product types, such as product weight and width, are becoming increasingly diverse. However, since the product width is limited by the equipment, it is necessary to set up equipment in advance that can produce the maximum width required by the market, resulting in high equipment costs and low equipment productivity. There were factors that led to high costs, such as high losses due to ear cutting and low yields.
本発明は、上記の諸問題を解決するのが目的である。即
ち、目付変動率が低く異方性が少ないといった品位の優
れた長繊維不織布を効率よく安価に製造する方法を狙い
とするものである。The present invention aims to solve the above problems. That is, the aim is to provide a method for efficiently and inexpensively producing long-fiber nonwoven fabrics of excellent quality, such as low variation in basis weight and little anisotropy.
本発明者はこれらの問題点に関し、長期にわたり鋭意検
討を重ねた結果、ついに本発明に到達した。本発明は従
来技術の盲点を突いた、革新的なもので、その骨子は次
のとおりである。The present inventor has finally arrived at the present invention as a result of long-term intensive studies regarding these problems. The present invention is innovative and exploits the blind spots of the prior art, and its gist is as follows.
熱可を性繊維の連続フィラメントより主として成る長繊
維不織布を製造する方法において、主として連続フィラ
メントより成る不織ウェッブをクロスラッパーに温き、
クロスランパーを通過する道程の少なくとも一個所で該
不織ウェッブに陰イオン及び／又は陽イオンを含む気体
を照射しつつ、移動する支持体上に連続的に垂下し、積
層した後、結合処理することを特徴とする長繊維不織布
の製造方法。A method for producing a long-fiber nonwoven fabric consisting mainly of continuous filaments of thermoplastic fibers, which comprises heating a nonwoven web consisting mainly of continuous filaments in a cross wrapper;
While irradiating the nonwoven web with a gas containing anions and/or cations at at least one point on the way through the cross ramper, the nonwoven web is continuously suspended onto a moving support, laminated, and then bonded. A method for producing a long fiber nonwoven fabric.
以下本発明の詳細な説明する。The present invention will be explained in detail below.
本発明に於いて、長繊維不織布は熱可塑性繊維の連続フ
ィラメントより主として成る不織ウェッブから得られる
。In the present invention, the long fiber nonwoven fabric is obtained from a nonwoven web consisting primarily of continuous filaments of thermoplastic fibers.
該不織ウェッブは主として連続したフィラメントが無作
為に堆積したものであればなんでもよく特に限定されな
いが、次に述べるような通常のスパンボンド法によって
得られた不織ウェッブが特に好ましい。即ち、熱可塑性
素材の溶融紡糸フィラメントを直接ジェット流にて、移
動する捕集支持体上に堆積して、又は熱可塑性素材の溶
融紡糸フィラメントを速度の異なるロール間で延伸した
後ジェット流にて、移動する捕集支持体上に堆積して得
られた不織ウェッブが特に好ましい、このようにして得
られた不織ウェッブは幅方向（ウェッブの進行方向に対
して直角方向）の目付分布に於いて、中央部が概ね平坦
であるのに対し両端が概ね漸減する所謂山麓状を形成し
ており、後でクロスラッパーにて交差Ｒ層して得られる
ところの長繊維不織布の表面に於いて積層痕跡が目立ち
にくい特長があり好都合である。また、不織ウェッブに
は必要に応じて水、潤滑油剤、制電油剤等が付与される
。The nonwoven web is not particularly limited as long as it is mainly composed of continuous filaments deposited randomly, but a nonwoven web obtained by a conventional spunbond method as described below is particularly preferred. That is, melt-spun filaments of thermoplastic material are deposited directly in a jet stream on a moving collection support, or melt-spun filaments of thermoplastic material are drawn between rolls of different speeds and then in a jet stream. Particularly preferred is a nonwoven web obtained by depositing it on a moving collection support. The central part is generally flat, while the ends gradually decrease, forming a so-called foothill shape. It is advantageous because it has the advantage that traces of lamination are less noticeable. Further, water, a lubricant, an antistatic oil, etc. are applied to the nonwoven web as necessary.
本発明に於いては、これらの不織ウェッブをクロスラッ
パーに導いて乱さないように能率良く正確に積層する為
に、必要ならば予備結合処理することが好ましい、予備
結合処理とは不織ウェッブの工程通過性改善を目的とし
て、不織ウェッブを構成するフィラメント間を部分的に
拘束する手段である。前述したように、不織ウェッブは
主として連続したフィラメントが無作為に重なり会った
ものであり一姫的に極めて不安定で、素材によってはク
ロスラッパーを通過する過程で、雰囲気の乱れや機械的
な引っ掛かりによって、所謂めくれ、引きつり、伸び等
の工程異常が発生することが多かったが、予備結合処理
を必要に応じて実施することによって種々の素材から成
る不織ウェッブに於いて工程通過性の飛躍的向上が認め
られた。該予備結合処理としては、高速流体処理、ニー
ドルパンチ処理、接着処理、融着処理、圧着処理が好ま
しく、特にカレンダーローラーやベルトニップ型熱処理
装置等を用いて熱セントする方法が処理能力が大でさら
に好ましい。In the present invention, in order to lead these nonwoven webs to the cross wrapper and laminate them efficiently and accurately without disturbing them, it is preferable to perform a prebonding process if necessary. This is a means for partially restraining the filaments that make up the nonwoven web, with the aim of improving process passability. As mentioned above, non-woven webs are mainly made up of continuous filaments overlapping each other at random and are therefore extremely unstable. Catch often causes process abnormalities such as curling, pulling, and elongation, but by performing pre-bonding treatment as necessary, it is possible to improve the process passability of nonwoven webs made of various materials. A dramatic improvement was recognized. The pre-bonding treatment is preferably a high-speed fluid treatment, a needle punching treatment, an adhesive treatment, a fusion treatment, or a pressure bonding treatment, and in particular, a heat cent method using a calender roller, belt nip type heat treatment device, etc. has a large processing capacity. More preferred.
本発明に於いては、次いで該不織ウェッブをクロスラッ
パーに導いて、これを通過する道程の少なくとも一個所
で該不織ウェッブに陰イオン及び／又は陽イオンを含む
気体を照射することを必須要件としている。導電性の乏
しい熱可塑性繊維から成る不織ウェッブを高速で搬送す
ると、どうしても不織ウェッブ自身が帯電し、搬送部材
との間に電気的引力が生じる。このために搬送部材から
積層支持体への不織ウェッブの移行が不規則となり折り
返し部分の重なりが不揃いになると云う問題があったが
、本発明の方法によれば不織ウェッブの電荷が速やかに
電気的に中和され搬送部材からの剥離が順調で定常的に
垂下され、折り返し部分が良く揃った長繊維不織布が得
られるので耳カットロスが少なく、工程収率が飛躍的に
向上する。In the present invention, it is essential that the nonwoven web is then guided to a cross wrapper, and that the nonwoven web is irradiated with a gas containing anions and/or cations at at least one point on the way through the cross wrapper. It is a requirement. When a nonwoven web made of thermoplastic fibers with poor electrical conductivity is conveyed at high speed, the nonwoven web itself becomes electrically charged and an electrical attraction is generated between the nonwoven web and the conveying member. For this reason, there was a problem in that the transfer of the nonwoven web from the conveying member to the laminated support was irregular and the folded portions overlapped unevenly, but according to the method of the present invention, the electric charge on the nonwoven web can be quickly removed. It is electrically neutralized, peels smoothly from the conveying member, hangs steadily, and produces a long fiber nonwoven fabric with well-aligned folded portions, resulting in less edge cut loss and dramatically improved process yield.
さらに搬送部材を帯電しにくい材料で構成するのが好ま
しい。すなわち、表面に電気伝導性物質を塗布した主と
して高分子体から成る部材や主として電気伝ｍ性材料で
構成される部材が好ましく、少なくとも表面部分が主と
してセルローズ及び／又はセルローズ誘導体で構成され
てなる部材が特に好ましい。Furthermore, it is preferable that the conveying member is made of a material that is not easily charged. That is, a member mainly made of a polymer whose surface is coated with an electrically conductive substance or a member mainly made of an electrically conductive material is preferable, and a member whose at least the surface portion is mainly made of cellulose and/or a cellulose derivative is preferable. is particularly preferred.
本発明に於いては、クロスラッパーの種類は特に限定し
ないが、搬送部材が一対のベルトから成り不織ウェッブ
を挟んで搬送する機能を有するクロスラッパーが不織ウ
ェッブが乱れにくく特に好ましい。また積層数も限定し
ないが、目付均一性と設備生産性を勘案すれば、積層数
が３〜６０の範囲が好ましく、積層数が１０〜３０の範
囲が特に好ましい。In the present invention, the type of cross wrapper is not particularly limited, but a cross wrapper whose conveying member is composed of a pair of belts and has the function of sandwiching and conveying the nonwoven web is particularly preferable because the nonwoven web is less likely to be disturbed. The number of laminated layers is also not limited, but in consideration of uniformity of basis weight and equipment productivity, the number of laminated layers is preferably in the range of 3 to 60, and particularly preferably in the range of 10 to 30.
本発明において、結合処理とは、不織ウェッブをクロス
ランパーで積層して得られたシート状物に実用上十分な
形態安定性を付与することを目的として、該シート状物
を構成するフィラメント間を部分的に拘束する手段であ
る。結合処理としては、高速流体処理、ニードルパンチ
処理、接着処理、融着処理、圧着処理が適しており、必
要に応じてこれらの処理を組み合わせても良く、その用
途に応じて選択される。部ち、高速流体処理は目付が３
００ｇ／ｒｒ？以下の柔軟な長繊維不織布の製造に、ニ
ードルパンチ処理は１００ｇ／ｍ以上の柔軟な長繊維不
織布の製造に、接着処理、融着処理、圧着処理は比較的
剛直で強い長繊維不織布の製造に適するが、これに限定
されるものではない。又、ニードルパンチ処理した後更
に高速流体処理を施すなど、幾つかの結合処理を組み合
わせるとそれぞれ独特の風合の長繊維不織布が得られ好
ましい。In the present invention, bonding treatment refers to bonding between the filaments constituting the sheet-like material for the purpose of imparting practically sufficient form stability to the sheet-like material obtained by laminating nonwoven webs using a cross ramper. It is a means of partially restraining the Suitable bonding treatments include high-speed fluid treatment, needle punching, adhesion, fusing, and pressure bonding, and these treatments may be combined as necessary, and are selected depending on the intended use. For high-speed fluid processing, the basis weight is 3.
00g/rr? Needle punching is used to produce flexible long-fiber nonwoven fabrics of 100 g/m or more; adhesion, fusing, and pressure bonding are used to produce relatively rigid and strong long-fiber nonwoven fabrics. suitable, but not limited to. It is also preferable to combine several bonding treatments, such as needle punching followed by high-speed fluid treatment, as long fiber nonwoven fabrics with unique textures can be obtained.
また、本発明に用いられる熱可塑性素材としては、溶融
紡糸可能な熱可塑性重合体例えばポリアミド、ポリエス
テル、ポリオレフィン、ポリフェニレンなどの単独重合
体や共重合体及びこれらの混合体が選択される。Further, as the thermoplastic material used in the present invention, melt-spun thermoplastic polymers such as homopolymers and copolymers such as polyamide, polyester, polyolefin, polyphenylene, and mixtures thereof are selected.
フィラメントの形態も単−成分系でも複数成分系でもよ
く、所謂芯鞘型複合フィラメントでも、海島型複合フィ
ラメントでも、分割型複合フィラメントでも、異種フィ
ラメントの混合フィラメントでもよい。フィラメント断
面は、円でも、楕円でも、偏平でも、多角形でも、中空
でもよい。フィラメント繊度も特に制限はないが０．１
〜２、Ｏデニールが好ましく特に好ましくは０．３〜０
゜９デニールである。The form of the filament may be a single-component type or a multi-component type, and may be a so-called core-sheath type composite filament, a sea-island type composite filament, a split type composite filament, or a mixed filament of different types of filaments. The cross section of the filament may be circular, elliptical, flat, polygonal, or hollow. There is no particular limit to the filament fineness, but it is 0.1.
-2, O denier is preferred, particularly preferably 0.3-0
It is 9 denier.
不織ウェッブ目付も制限されないが１〜５０ｇ／ｍが好
ましく、特に好ましくは２〜２０ｇ／ｍである。The nonwoven web weight is also not limited, but is preferably from 1 to 50 g/m, particularly preferably from 2 to 20 g/m.
該ウェッブには熱可塑性又は非熱可塑性高分子から成る
短繊維が混在しても良（、適宜各工程でこれらの短繊維
を入れても良いことは云うまでもない。Short fibers made of thermoplastic or non-thermoplastic polymers may be mixed in the web (it goes without saying that these short fibers may be added in each step as appropriate).
長繊維不織布の目付は、当然、市場の要求に応じて任意
に設定される。Naturally, the basis weight of the long fiber nonwoven fabric is arbitrarily set according to market demands.
さらに本発明を図面で説明するが、これによって本発明
が限定されるものではない。Further, the present invention will be explained with reference to the drawings, but the present invention is not limited thereby.
第１図は本発明の好ましい実施態様の一例を示す概略斜
視図である。原料ホンパー１から供給される熱可塑性高
分子素材粒子が紡糸機２によって溶融紡糸され、空気エ
ジェクター４で牽引されてマルチフィラメント３を形成
し、噴射拡散ノズル５を介してウェッブ捕集コンベア６
上に散布されて不織ウェッブ７となる。該不織ウェッブ
７は必要に応じて熱センドローラー８で予備結合処理さ
れた後、クロスラッパー９の搬送部材１０に供給され、
イオン空気照射装置１１によって陰イオン及び陽イオン
を含有する空気が矢印（↓）Ｂ方向に照射され不織ウェ
ッブ７及び搬送部材ｌＯの電荷が電気的に中和せしめら
れる。このことによって、不織ウェッブ７と搬送部材１
０の間に働く電気的引力が著しく低減せしめられ、不織
ウェッブ７は搬送部材１０から順調に剥離し移動する支
持体１２上に定常的に垂下し、正確に乱れることなく積
層される。該不織ウェッブ７を積層して成るシート状物
は、続いて、熱セツトローラー１４にて結合処理され長
繊維不織布１５となる。該支持体１２は空気吸引装置の
吸引口１３に背面を接して慴動する気体透過性部材で構
成され、表面近傍の雰囲気を吸引し矢印（０−） Ａ方
向に排気しつつ不織ウェッブを垂下し積層する方法が積
層精度が高くさらに好ましい。FIG. 1 is a schematic perspective view showing an example of a preferred embodiment of the present invention. Thermoplastic polymer material particles supplied from a raw material hopper 1 are melt-spun by a spinning machine 2, pulled by an air ejector 4 to form a multifilament 3, and sent to a web collection conveyor 6 via an injection diffusion nozzle 5.
The nonwoven web 7 is formed by being sprinkled on top. The nonwoven web 7 is pre-bonded by a heat send roller 8 if necessary, and then supplied to the conveying member 10 of the cross wrapper 9.
The ionic air irradiation device 11 irradiates air containing anions and cations in the direction of arrow (↓) B, thereby electrically neutralizing the electric charges on the nonwoven web 7 and the conveying member IO. By this, the nonwoven web 7 and the conveying member 1
The electrical attractive force exerted during the nonwoven web 7 is significantly reduced, and the nonwoven web 7 is smoothly peeled off from the conveying member 10, hangs steadily on the moving support 12, and is laminated accurately and without disturbance. The sheet-like material formed by laminating the nonwoven webs 7 is then bonded by a heat set roller 14 to become a long fiber nonwoven fabric 15. The support body 12 is composed of a gas permeable member that slides with its back side in contact with the suction port 13 of the air suction device, and sucks the atmosphere near the surface and exhausts it in the direction of arrow (0-) A while the nonwoven web is being moved. A method in which layers are laminated in a hanging manner is more preferable because the lamination accuracy is high.
次に実施例によって本発明を更に詳細に説明するが、こ
れによって本発明が限定解釈されたり、本発明の有効性
が損なわれたりするものではない。EXAMPLES Next, the present invention will be explained in more detail with reference to Examples, but this does not limit the present invention or impair the effectiveness of the present invention.
なお、実施例中の評価値は以下の方法で測定し算出した
値である。In addition, the evaluation values in the examples are values measured and calculated by the following method.
（１）目付と目付変動率
一辺が５ｃ−の正方形のサンプルをヨコ方向、タテ方向
にそれぞれ２０個採取し、重量を測定して目付（ｇ／
ｒｄ ）に換算し、全体の平均を求め平均目付（ｇ／
ｒｄ ）とするとともに、それぞれの方向毎に目付の不
偏分散の平方根の平均目付に対する百分率を計算して、
それぞれヨコ目付変動率（％）及びタテ目付変動率（％
）とした。(1) Fabric weight and fabric weight variation rate Take 20 square samples of 5c- on each side in the horizontal and vertical directions, measure the weight, and measure the fabric weight (g/
rd), calculate the overall average, and calculate the average basis weight (g/
rd ), and calculate the percentage of the square root of the unbiased variance of the basis weight to the average basis weight for each direction,
Horizontal area weight variation rate (%) and vertical area weight variation rate (%)
).
（２）引張強力と引張伸度
ヨコ方向、タテ方向に付いてそれぞれ５ｃｍＸ２０ｃｍ
の矩形サンプルを採取し、引張速度１０ｃｎ＋／ｌ１ｉ
ｎの定速引張試験機を用いて測定し、最高強力と最高強
力時伸度を求めそれぞれヨコ及びタテ引張強力（ｋｇ１
５ｃｍ）、ヨコ及びタテ引張伸度（％）とした。(2) Tensile strength and tensile elongation 5cm x 20cm in horizontal and vertical directions, respectively
A rectangular sample was taken and the tensile speed was 10cn+/l1i.
Measured using a constant speed tensile testing machine of
5 cm), and horizontal and vertical tensile elongation (%).
（３）異方性
各特性毎に、ヨコ方向の値とタテ方向の値の差の絶対値
の平均（Ｊに対する百分率を異方性（％）とした。(3) Anisotropy For each characteristic, the average absolute value of the difference between the value in the horizontal direction and the value in the vertical direction (percentage with respect to J was defined as anisotropy (%)).
（４）工程収率
原料投入重臂に対する一級製品重量の割合を百分率で算
出し工程収率（％）とした。(4) Process yield The ratio of the weight of the first-grade product to the weight of raw materials input was calculated as a percentage, and the process yield (%) was calculated.
実施例１
ナイロン６を紡糸温度２６５℃で、吐出孔の直径が０．
１５ｍｍのノズル孔を１５６孔配した紡糸口金２個が長
さ方向に３２ｃｍ間隔で配設された紡糸装置から紡出し
、それぞれ空気ニジエフクーにより５０００ｍ／ｍｉｎ
で牽引してなるフィラメント群を金属面に衝突させ、摩
擦帯電で開繊せしめた後、移動する金網上に相前後して
堆積させて、平均単糸繊度が０．５デニール、平均目付
が４．ｈ／ ｍ、幅が１１０ｃｍの不織ウェッブを得た
。この不織ウニ・７ブの目付分布はオンラインに組み込
まれた光電弐目付計で観測したところ、中央部がほぼ平
坦で両端部が漸減する所謂山麓状を呈していた。Example 1 Nylon 6 was spun at a temperature of 265°C and the diameter of the discharge hole was 0.
Spinning was carried out from a spinning device in which two spinnerets each having 156 nozzle holes of 15 mm were arranged at intervals of 32 cm in the length direction, and the spinning speed was 5000 m/min using an air compressor.
The group of filaments pulled by a metal surface is collided with a metal surface, opened by frictional charging, and then deposited one after another on a moving wire mesh to obtain a filament with an average fineness of 0.5 denier and an average basis weight of 4. ．． A nonwoven web with a width of 110 cm and a width of 110 cm was obtained. The weight distribution of this non-woven sea urchin 7-piece was observed using a photoelectric weight meter installed online, and it was found to be almost flat in the center and gradually decreasing at both ends, giving it a so-called foothill shape.
つぎに、該不織ウェッブを、予備結合処理として表面温
度１６０℃に加熱した直径が５０ｃ＋ｎの１対のカレン
ダーローラーで圧着処理した後、クロスラッパーの搬送
部材に轟き、陰イオン及び陽イオンを含む空気を照射し
た後、背面が気体吸引装置の吸引口に外接して摺動する
気体透過性部材から成る移動する支持体上に、該気体透
過性部材表面近傍の雰囲気を背面方向に吸引しつつ、平
均積層数が１０層で幅が５．９ｍになるように連続して
垂下し積層した。さらに結合処理として、これを移動す
る１００メツシユ金網コンベアを支持体として、幅方向
に振幅１．２ｍｍ、２０サイクルで往復運動するところ
の孔径０．２ｍｍのノズル孔を間ＩＪ１．２１で配した
矩形ノズルから２５ ｋｇ ／ ｃｒＡの高圧水を噴射
せしめて成る高速柱状流で表裏を交互に２回操り返し処
理した後、１２０℃の熱風で乾燥して、平均目付が５２
ｇ／ｒｒｌで幅が５．７ｍの長繊維不織布を得た。第１
表及び第２表に示すように、該長繊維不織布は比較例に
比べ、幅が広大で目付変動率が画期的に小さく異方性が
極めて少ない優れた品質を有し、工程収率が高く、外観
的にも欠点が少なくクロスラッパーによる積層の痕跡が
ほとんど目立たず両端の折り返し部が良くそろった高品
位なものであり、手術着、無塵服などの衣料用として、
又は、皮革用基布、フィルター基布などの産業資材用と
して極めて適したものであった。Next, the nonwoven web is compressed with a pair of calender rollers having a diameter of 50c+n and heated to a surface temperature of 160°C as a pre-bonding treatment, and then the nonwoven web is rolled onto the conveying member of the cross wrapper and contains anions and cations. After irradiating air, the atmosphere near the surface of the gas permeable member is placed on a moving support body made of a gas permeable member that slides with its back surface circumscribing the suction port of the gas suction device while sucking the atmosphere near the surface of the gas permeable member toward the back surface. The sheets were laminated in a hanging manner so that the average number of layers was 10 and the width was 5.9 m. Furthermore, as a joining process, a rectangular shape with nozzle holes of 0.2 mm in diameter arranged at an interval of IJ 1.21 is reciprocated in the width direction with an amplitude of 1.2 mm and 20 cycles using a 100-mesh wire mesh conveyor as a support. After treating the front and back sides alternately twice with a high-speed columnar flow made by spraying high-pressure water of 25 kg/crA from a nozzle, it was dried with hot air at 120°C to an average basis weight of 52.
A long fiber nonwoven fabric having a width of 5.7 m at g/rrl was obtained. 1st
As shown in Table and Table 2, compared to the comparative example, the long fiber nonwoven fabric has a wider width, a revolutionary lower basis weight variation rate, extremely low anisotropy, and excellent quality, with a lower process yield. It is high quality, has few defects in appearance, the traces of lamination by the cross wrapper are hardly noticeable, and the folded parts on both ends are well aligned, making it a high quality product for clothing such as surgical gowns and dust-free clothing.
In addition, it was extremely suitable for use in industrial materials such as leather base fabrics and filter base fabrics.
実施例２
実施例１と同様に、不織ウェッブを得て予備結合処理し
ないで、クロスラッパーの搬送部材に導き、陰イオン及
び陽イオンを含む空気を照射した後、実施例１と同様に
積層、結合処理、乾燥をして、平均目付と幅が実施例１
とほぼ等しい長繊維不織布を得た。該長繊維不織布は、
第１表及び第２表に示すように目付変動率及び異方性に
関しては実施例１と同様に優れた長繊維不織布であった
。Example 2 In the same manner as in Example 1, a nonwoven web was obtained and introduced into the conveying member of the cross wrapper without pre-bonding treatment, and after being irradiated with air containing anions and cations, it was laminated in the same manner as in Example 1. , bonding treatment, drying, and the average basis weight and width are as shown in Example 1.
A long-fiber nonwoven fabric having approximately the same properties as the above was obtained. The long fiber nonwoven fabric is
As shown in Tables 1 and 2, the long fiber nonwoven fabric was excellent in terms of area weight variation and anisotropy, similar to Example 1.
また、工程収率も比較例に対して温かに勝れていた。Moreover, the process yield was also warmly superior to that of the comparative example.
実施例３
実施例１と同様に、不織ウェッブを得て予備結合処理し
ないで、クロスラッパーの搬送部材に傅き、陰イオン及
び陽イオンを含む空気を照射した後、移動する木製ラチ
ェス上に、平均積層数が１０層で、幅が５．９ｍになる
ように連続して垂下し積層した。更に実施例１と同じ条
件で結合処理と乾燥を実施し、平均目付と幅が実施例１
とほぼ同様である長繊維不織布を得た。該長繊維不織布
は、第１表及び第２表に示すように目付変動率及び異方
性に関しては実施例１と同様に優れた長繊維不織布であ
った。また、工程収率も比較例に対してかなり勝れてい
た。Example 3 In the same manner as in Example 1, a non-woven web was obtained without pre-bonding, passed through the conveying member of the cloth wrapper, irradiated with air containing anions and cations, and then placed on a moving wooden latchese. The average number of layers was 10, and the layers were stacked in a hanging manner so that the width was 5.9 m. Furthermore, bonding treatment and drying were performed under the same conditions as in Example 1, and the average basis weight and width were as in Example 1.
A long-fiber nonwoven fabric almost similar to the above was obtained. As shown in Tables 1 and 2, the long fiber nonwoven fabric was excellent in terms of basis weight fluctuation rate and anisotropy, similar to Example 1. Furthermore, the process yield was considerably superior to that of the comparative example.
比較例
ナイロン６を紡糸温度２６５°Ｃで、孔径０．１５ｍｍ
のノズル孔を３９孔配した紡糸口金が８個幅方向に１３
ｃａ＋間隔で配設された紡糸装置を用いて紡出し、各口
金毎に設けられた空気エジェクターにより５０００ＩＩ
Ｉ／ｓｉｎで牽引し、フィラメント群を金属面に衝突さ
せ、摩擦帯電で開繊せしめた後移動する金網コンベア上
に堆積して、平均単糸繊度が０．５デニール、目付が４
９ｇ／ｒｒｒ、幅が１１０ａｍの長繊維不織ウェッブを
得た。あらかじめ、それぞれの空気エジェクターからの
フィラメント群が出来るだけ均等に堆積されるように金
属面の方向と角度は入念に調整がなされ、不織ウェッブ
が拡がり過ぎないように規制する為に４Ｑｋｖの高電圧
を負荷した側板が金網コンベアの両端に設けられた。次
ぎに該不織ウェッブを移動する１００メソシユ金網コン
ベアから成る支持体上で、幅方向に振幅１．２ｍｍで２
０サイクルで往復運動するところの孔径０．２ｍｍのノ
ズル孔を間隔１．２ｍｍで配した矩形ノズルから２５
ｋｇ／ｃＪの高圧水を噴射せしめてなる高速柱状流で、
表裏を交互に２回繰り返し処理した後、１２０℃の熱風
で乾燥し、続いて両端の耳部を切除して、平均目付が５
２ｇ／ｒｒｆで幅が１．０ｍの長繊維不織布を得た。該
長繊維不織布は、第１表及び第２表に示すように目付変
動率及び異方性に関しては、実施例１、実施例２、実施
例３、に比較して著しく劣っており、両端部の耳カフ）
ロスが多く低収率で、外観品位も著しく劣っており、製
品幅も当然狭小なものであった。Comparative Example: Nylon 6 was spun at a temperature of 265°C, with a pore diameter of 0.15 mm.
There are 8 spinnerets with 39 nozzle holes and 13 spinnerets in the width direction.
Spinning using spinning devices arranged at ca+ intervals, 5000II
The filaments are pulled by I/sin, collided with a metal surface, opened by frictional charging, and then deposited on a moving wire mesh conveyor, with an average single filament fineness of 0.5 denier and a basis weight of 4.
A long fiber nonwoven web having a weight of 9 g/rrr and a width of 110 am was obtained. Beforehand, the direction and angle of the metal surfaces were carefully adjusted so that the filaments from each air ejector were deposited as evenly as possible, and a high voltage of 4Qkv was applied to prevent the nonwoven web from spreading too much. Loaded side plates were installed at both ends of the wire mesh conveyor. Next, the nonwoven web is moved on a support consisting of a 100-mesh wire mesh conveyor in the width direction with an amplitude of 1.2 mm.
25 from a rectangular nozzle with nozzle holes with a hole diameter of 0.2 mm arranged at intervals of 1.2 mm, which reciprocate in 0 cycles.
A high-speed columnar flow made by injecting high-pressure water of kg/cJ,
After repeating the treatment twice on the front and back sides, it was dried with hot air at 120°C, and then the ears on both ends were cut off to give an average basis weight of 5.
A long fiber nonwoven fabric with a width of 1.0 m was obtained at 2 g/rrf. As shown in Tables 1 and 2, the long fiber nonwoven fabric was significantly inferior to Example 1, Example 2, and Example 3 in terms of basis weight variation rate and anisotropy, and both ends ear cuff)
There was a lot of loss, the yield was low, the appearance quality was extremely poor, and the product range was naturally narrow.
第１表 第２表 〔発明の効果〕 本発明の効果の要約を次に示す。Table 1 Table 2 〔Effect of the invention〕 A summary of the effects of the present invention is shown below.
（１）目付変動率が極めて小さく、異方性の少ない勝れ
た長繊維不織布が安定して得られる。(1) Excellent long-fiber nonwoven fabric with extremely low basis weight variation and low anisotropy can be stably obtained.
（２）外観欠点の少ない高品位な長繊維不織布が能率良
（生産できる。(2) High-quality long-fiber nonwoven fabric with few defects in appearance can be produced efficiently.
（３）耳部が良く整った長繊維不織布が得られるので、
耳切除ロスが少なく製品収率が飛躍的に向上する。(3) A long-fiber nonwoven fabric with well-organized edges can be obtained.
Ear removal loss is reduced and product yield is dramatically improved.
（４）製品の目付や幅に関する市場の多様な要求に対し
て単にクロスラッパーの条件を変えるだけで即応でき、
品種切り換えに伴う物と時間のロスが大幅に低減できる
。(4) We can respond quickly to various market demands regarding product weight and width by simply changing the conditions of the cross wrapper.
The loss of material and time associated with changing product types can be significantly reduced.
第１図は本発明の実施態様の一例を示す概略斜視図であ
る。
図中に於いて
ｌ：原料ホッパー、２：紡糸機、３：マルチフィラメン
ト、４：空気エジェクター、５：噴射拡散ノズル、６：
ウニノブ捕集コンベア、７：不織ウェッブ、８：不織ウ
ニ・７ブの熱セツトローラー、９：クロスランパー、ｌ
Ｏ：クロスラッパーの搬送部材、１１：イオン空気照射
装置、１２：支持体、１３：空気吸引装置の吸引口、１
４：結合処理用熱センドローラー、１５：長繊維不織布
。FIG. 1 is a schematic perspective view showing an example of an embodiment of the present invention. In the figure, l: raw material hopper, 2: spinning machine, 3: multifilament, 4: air ejector, 5: injection diffusion nozzle, 6:
Sea urchin knob collection conveyor, 7: Non-woven web, 8: Non-woven sea urchin 7-piece heat set roller, 9: Cross ramper, l
O: cross-lapper conveyance member, 11: ionized air irradiation device, 12: support, 13: suction port of air suction device, 1
4: Heat send roller for bonding treatment, 15: Long fiber nonwoven fabric.
Claims (1)
維不織布を製造する方法において、主として連続フィラ
メントより成る不織ウエッブをクロスラッパーに導き、
クロスラッパーを通過する道程の少なくとも一個所で該
不織ウエッブに陰イオン及び／又は陽イオンを含む気体
を照射しつつ、移動する支持体上に連続的に垂下し、積
層した後、結合処理することを特徴とする長繊維不織布
の製造方法。A method for producing a long-fiber nonwoven fabric consisting primarily of continuous filaments of thermoplastic fibers, comprising: guiding a nonwoven web consisting primarily of continuous filaments to a cross wrapper;
While irradiating the nonwoven web with a gas containing anions and/or cations at at least one point on the way through the cross wrapper, the nonwoven web is continuously suspended onto a moving support, laminated, and then bonded. A method for producing a long fiber nonwoven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61286907A JPS63145466A (en) | 1986-12-02 | 1986-12-02 | Production of long fiber nonwoven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61286907A JPS63145466A (en) | 1986-12-02 | 1986-12-02 | Production of long fiber nonwoven fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63145466A true JPS63145466A (en) | 1988-06-17 |
Family
ID=17710537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61286907A Pending JPS63145466A (en) | 1986-12-02 | 1986-12-02 | Production of long fiber nonwoven fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63145466A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240216A (en) * | 2007-03-29 | 2008-10-09 | Kuraray Co Ltd | Method for producing filament nonwoven fabric and method for producing substrate for artificial leather |
-
1986
- 1986-12-02 JP JP61286907A patent/JPS63145466A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240216A (en) * | 2007-03-29 | 2008-10-09 | Kuraray Co Ltd | Method for producing filament nonwoven fabric and method for producing substrate for artificial leather |
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