JPH0261155A - High modulus needle-punched nonwoven fabric and production thereof - Google Patents
High modulus needle-punched nonwoven fabric and production thereofInfo
- Publication number
- JPH0261155A JPH0261155A JP63208866A JP20886688A JPH0261155A JP H0261155 A JPH0261155 A JP H0261155A JP 63208866 A JP63208866 A JP 63208866A JP 20886688 A JP20886688 A JP 20886688A JP H0261155 A JPH0261155 A JP H0261155A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- needle
- needling
- fibers
- high modulus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 10
- 239000012209 synthetic fiber Substances 0.000 claims abstract description 10
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 8
- 238000004049 embossing Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 22
- 239000012770 industrial material Substances 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000000835 fiber Substances 0.000 description 45
- 238000000034 method Methods 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 7
- -1 polyethylene terephthalate Polymers 0.000 description 6
- 229920002292 Nylon 6 Polymers 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229920006240 drawn fiber Polymers 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、産業資材用途やインテリア用途に用いられる
高モジュラスニードルパンチ不織布及びその製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a high modulus needle-punched nonwoven fabric used for industrial materials and interior applications, and a method for producing the same.
（従来の技術）
従来より、長繊維ニードルパンチ不織布を製造するには
、熱可塑性ポリマーを溶融紡糸したフィラメントをエア
ーサッカーで延伸した後、コンベアネット上に堆積させ
、ウェブを作成し９次いで該ウェブを熱圧接ロール例え
ばエンボッジンゲロールとフラットロール又は一対のエ
ンボッジンゲロールからなる熱ロールにて熱圧接を行っ
た後、ニードリングを行うものである。ところが、上記
従来の方法では、該ウェブを構成する繊維間を強固に熱
融着させるものではなく、ニードリング工程に至る迄、
その形態が保持される程度に圧接されているものであれ
ば十分であり、ニードリング前の熱圧接は、できる限り
弱い仮圧接される程度に止めておくことが、後のニード
リング工程を円滑に行わせる上で必要なことであった。(Prior Art) Conventionally, in order to produce a long-fiber needle-punched nonwoven fabric, filaments obtained by melt-spinning a thermoplastic polymer are drawn using an air sucker, and then deposited on a conveyor net to form a web. After hot press welding is performed using a hot press roll, for example, an embossing roll and a flat roll, or a hot roll consisting of a pair of embossing rolls, needling is performed. However, in the conventional method described above, the fibers constituting the web are not firmly bonded by heat, and up to the needling step,
It is sufficient that the welding is carried out to the extent that its shape is maintained, and it is advisable to limit the thermal welding before needling to the weakest temporary pressure welding possible to ensure that the subsequent needling process is smooth. This was necessary in order for the government to do so.
ところが。However.
上記製造方法では、ニードリング工程を円滑に行うこと
ができるものの、高モジュラスニードルパンチ不織布を
得ることは困難であった。近年とみに産業資材用途やイ
ンテリア用途に高モジユラス不織布が要望されるように
なってきた。In the above manufacturing method, although the needling step can be performed smoothly, it is difficult to obtain a high modulus needle punched nonwoven fabric. In recent years, demand has increased for high modulus nonwoven fabrics for industrial material and interior applications.
この高モジユラス不織布を得る方法として、特開昭５１
−１３３５８３号公報や特公昭６０−２５５４３号公報
にその技術が開示されている。As a method for obtaining this high modulus nonwoven fabric, JP-A-51
The technique is disclosed in Japanese Patent Publication No. 133583 and Japanese Patent Publication No. 60-25543.
例えば、前者の方法は、不織布ウェブの片面をニードリ
ングした後、熱固定し１次いで他の面をニードリングす
る方法であり、ニードリングによる繊維の損傷を抑え、
かつ繊維の絡合を向上させることで高モジユラス不織布
が得られるものである。For example, the former method involves needling one side of a nonwoven web, heat-setting it, and then needling the other side.
In addition, a high modulus nonwoven fabric can be obtained by improving the entanglement of fibers.
ところが、ニードリングを両面に行うため、工程が複雑
となり、コスト高になる欠点があった。次に。However, since needling is performed on both sides, the process is complicated and costs are high. next.
後者の方法は、ニードリングの前に油剤を付与して針の
突差し抵抗を小さく、針密度を高くすることで繊維の絡
合が向上し、高モジユラス不織布が得られるものである
。ところが、針密度には限界があって、生産性の面でマ
イナスとなり、繊維相互間の辷りのために効率の良い絡
合不織布を得ることが難しい欠点があった。また、他の
方法として。In the latter method, an oil agent is applied before needling to reduce needle insertion resistance and increase needle density to improve fiber entanglement and obtain a high modulus nonwoven fabric. However, there is a limit to the needle density, which has a negative effect on productivity, and it is difficult to obtain an efficient entangled nonwoven fabric due to the stiction between the fibers. Also, as another method.
熱圧接率を大きくすることで、不織布のモジュラスを向
上させることも可能であるが、風合が粗硬となり、柔軟
性を要求される分野には不適なものであった。Although it is possible to improve the modulus of a nonwoven fabric by increasing the thermocompression welding ratio, the texture becomes rough and hard, making it unsuitable for fields that require flexibility.
（発明が解決しよう心する課題）
本発明は、上記課題を解決するもので、不織布の生産性
を低下させることなく、シかもニードリング工程で針折
れ等のトラブルがなく、風合的にも柔軟性を保持してい
る高モジュラスニードルパンチ不織布を提供しようとす
るものである。(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems, without reducing the productivity of nonwoven fabrics, without problems such as needle breakage during the needling process, and with improved texture. The object is to provide a high modulus needle-punched nonwoven fabric that retains flexibility.
（課題を解決するための手段）
本発明者らは、産業資材用途等に使用できる高モジユラ
ス不織布を得る目的で鋭意研究した結果。(Means for Solving the Problems) The present inventors have conducted intensive research with the aim of obtaining a high modulus nonwoven fabric that can be used for industrial material applications.
本発明に到達したものである。This has led to the present invention.
すなわち１本発明は、単糸繊度が１．５〜１５デニール
である熱可塑性合成繊維フィラメントからなるウェブを
開繊、積層せしめてなる不織布であって。That is, one aspect of the present invention is a nonwoven fabric made by opening and laminating a web made of thermoplastic synthetic fiber filaments having a single yarn fineness of 1.5 to 15 deniers.
該不織布が部分的に熱圧接されるとともにニードリング
により絡合されており、上記不織布の熱圧接面積率が１
０〜４０％、ニードリングにおける針密度が２０〜８０
回／ ＣＴａである高モジュラスニードルパンチ不織布
及びその製造方法を要旨とするものである。The nonwoven fabric is partially heat-pressed and entangled by needling, and the heat-pressed area ratio of the nonwoven fabric is 1.
0-40%, needle density in needling 20-80
The gist of this paper is a high modulus needle-punched nonwoven fabric that is 1/CTa and a method for producing the same.
本発明に使用される熱可塑性合成繊維としては。The thermoplastic synthetic fiber used in the present invention includes:
ポリエチレンテレフタレート、ポリブチレンテレフタレ
ート等のポリエステル系、ポリエチレン、ポリプロピレ
ン等のポリオレフィン系、ナイロン６゜ナイロン６６等
のポリアミド系等のポリマーからなるもので、これらポ
リマーのブレンドからなるものも含まれる。また、繊維
の形態としては、これら１００％からなる繊維の他に、
これらポリマーからなる貼り合わせ型複合繊維、芯鞘型
複合繊維のいずれのものでも使用できる。It is made of polymers such as polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyolefins such as polyethylene and polypropylene, and polyamides such as nylon 6° and nylon 66, and also includes blends of these polymers. In addition to these 100% fiber forms,
Both bonded type composite fibers and core-sheath type composite fibers made of these polymers can be used.
次に、上記熱可塑性合成繊維の単糸デニーＪしとしては
１．５〜１５デニールの範囲にあることが必要である。Next, the single yarn Denier J of the thermoplastic synthetic fiber needs to be in the range of 1.5 to 15 Denier.
単糸繊度が１．５デニ一ル未満の場合、熱圧接すると、
熱が繊維の中心迄伝えられるため熱圧接で不織布がプラ
スチック化し、風合が粗硬になる。その上、ニードリン
グ工程では、繊維間の融通性が乏しいので繊維の切断が
多発し、高モジユラス不織布が得られないことになる。If the single yarn fineness is less than 1.5 denier, heat pressure welding will result in
Because heat is transmitted to the center of the fibers, the nonwoven fabric becomes plastic due to thermo-pressure welding, giving it a rough and hard texture. Furthermore, in the needling process, fibers are frequently cut due to poor flexibility between fibers, making it impossible to obtain a high modulus nonwoven fabric.
一方、単糸繊度が１５デニールを超えると、繊維同士の
圧接点が少なく、ニードリング処理において容易に圧接
部分がはずれてしまうので得られた不織布のモジュラス
は低いものとなってしまうことになる。On the other hand, when the single yarn fineness exceeds 15 denier, there are few pressure contact points between the fibers, and the pressure contact parts easily come off during the needling process, resulting in a low modulus of the obtained nonwoven fabric.
なお、熱圧接を行うに際しては、エンボッジンゲロール
とフラットロール又は二つのエンボッジンゲロールから
なる一対のロールにて熱圧接するものである。圧接する
温度は、使用する繊維の融点以下１０〜１００℃の温度
範囲にあり、圧接面積率が１０〜４０％の範囲にあるこ
とが必要である。In addition, when carrying out thermo-pressure welding, heat-pressure welding is carried out using an embossing roll and a flat roll, or a pair of rolls consisting of two embossing rolls. It is necessary that the temperature at which the fibers are pressed be in a temperature range of 10 to 100° C. below the melting point of the fibers used, and that the area ratio of the welded fibers be in a range of 10 to 40%.
なお、不織布を構成する繊維が２種ポリマーからなる複
合繊維の場合、この熱圧接温度は、低い融点を有するポ
リマーを基準とするものである。In addition, when the fibers constituting the nonwoven fabric are composite fibers made of two types of polymers, this thermocompression welding temperature is based on a polymer having a low melting point.
圧接する温度が繊維の融点以下１０℃より高い場合。When the pressure welding temperature is below the melting point of the fibers and higher than 10°C.
圧接点が強固になるものであるが、ポリマーの軟化流動
により不織布がプラスチック化し、ニードリングの際、
針が貫入すると、繊維が切断するか。Although the pressure contact point becomes strong, the nonwoven fabric becomes plastic due to the softening and flow of the polymer, and during needling,
If the needle penetrates, will the fibers be cut?
針穴だけが不織布にでき、絡合の乏しい不織布しか得ら
れない。このため、風合が柔軟で、かつ高モジユラス不
織布は得られないものである。一方。Only the needle holes can be made into a nonwoven fabric, and only a nonwoven fabric with poor entanglement can be obtained. Therefore, a nonwoven fabric with a soft texture and high modulus cannot be obtained. on the other hand.
繊維の融点以下１００℃より低い温度の場合、圧接か弱
く、ニードリングの際、針が貫、入すると圧接部分が容
易にはずれ、モジュラスの低い不織布しか得られないも
のである。If the temperature is lower than 100° C. below the melting point of the fibers, the pressure welding will be weak, and if a needle penetrates during needling, the pressure welded portion will easily come off, resulting in only a nonwoven fabric with a low modulus.
ここで、圧接面積率とは、不織布シート全体の面積に対
する圧接された部分の面積の割合で定義されるもので、
圧接面積率が１０％未満の場合、繊維間の接合点が少な
いため、高モジユラス不織布を得ることができない。一
方、圧接面積率が４０％を超えると、ｓｉ維間の圧接点
が多（なり過ぎ、不織布がプラスチック化し、ニードリ
ングの際、針が貫通すると繊維が切断することになる。Here, the pressure contact area ratio is defined as the ratio of the area of the pressed part to the area of the entire nonwoven fabric sheet,
When the pressure contact area ratio is less than 10%, there are few bonding points between fibers, making it impossible to obtain a high modulus nonwoven fabric. On the other hand, if the pressure contact area ratio exceeds 40%, there will be too many pressure contact points between the Si fibers, the nonwoven fabric will become plastic, and the fibers will be cut when the needle penetrates during needling.
また、針が破損する確率も高くなり、操業面からも高モ
ジユラス不織布を製造することができないものである。Furthermore, the probability of needle breakage increases, and from an operational standpoint, it is impossible to produce a high modulus nonwoven fabric.
また、上記プラスチック化した不織布を多層に積層した
としても繊維の絡合が少なく層間剥離のし易いシート状
物しか得られない。Further, even if the plasticized nonwoven fabric is laminated in multiple layers, only a sheet-like product is obtained in which the fibers are less entangled and the layers are easily peeled off.
次に、ニードリングにおける針密度の範囲としては、２
０〜８０回／ ｃｔ＆とする必要がある。針密度が２０
凹／ｃ艷未満では繊維を絡合させる程度が少なく。Next, the range of needle density in needling is 2
It is necessary to set it to 0-80 times/ct&. Needle density is 20
If it is less than concave/crystalline, the degree of entanglement of fibers is small.
高モジュラスニードルパンチ不織布は得られない。High modulus needle punched nonwoven fabrics cannot be obtained.
一方、８０回／−を超えると、非圧接部分の繊維の絡合
性は良好であるが、熱圧接部分が針の貫入で破壊される
頻度が多い。これは、圧接部分においては、繊維のモビ
リティが少なく、針の動きに追従できない繊維が切断す
ることとなり、やはり高モジュラスニードルパンチ不織
布は得られない。On the other hand, if it exceeds 80 times/-, the entanglement of the fibers in the non-pressure welded part is good, but the heat-welded part is often destroyed by the penetration of the needle. This is because the mobility of the fibers is low in the press-contact portion, and fibers that cannot follow the movement of the needle are cut, so that a high modulus needle-punched nonwoven fabric cannot be obtained.
本発明のニードルパンチ不織布は、不織布を構成する繊
維の単糸繊度および熱圧接時の温度範囲を数値限定し、
さらにモジュラスの向上に寄与する熱圧接面積率とニー
ドルパンチ数とを詳細に検討することによって不織布と
してバランスのとれたものが初めて得られたものである
。The needle-punched nonwoven fabric of the present invention numerically limits the single fiber fineness of the fibers constituting the nonwoven fabric and the temperature range during thermopressure welding,
Furthermore, by carefully studying the thermocompression weld area ratio and the number of needle punches, which contribute to improving the modulus, a well-balanced nonwoven fabric was obtained for the first time.
（作 用）
本発明のニードルパンチ不織布は、熱圧接によって不織
布構成繊維のモビリティが抑制されている部分と、ニー
ドリングによって構成繊維の絡合部分が向上されている
部分とがバランスよく混在しているものである。したが
って、ニードリングによる針の貫入時において、熱圧接
部分における繊維の切断、針の破損等のトラブルがなく
、操業性が良好で、繊維の絡合効果が向上することにな
る。(Function) The needle-punched nonwoven fabric of the present invention has a well-balanced mixture of areas where the mobility of the constituent fibers of the nonwoven fabric is suppressed by thermo-pressure welding and areas where the entanglement of the constituent fibers is improved by needling. It is something that exists. Therefore, when the needle penetrates during needling, there are no troubles such as cutting of the fiber at the thermo-compression welding part or breakage of the needle, resulting in good operability and improved fiber entanglement effect.
さらに、熱圧接部分が不織布全体の１０〜４０％を占め
ることにより、構成繊維のうち、圧接部分が拘束を受け
ている部分がモジュラスの向上に寄与するものである。Furthermore, since the heat-pressed portion occupies 10 to 40% of the entire nonwoven fabric, the portion of the constituent fibers where the pressure-welded portion is constrained contributes to improving the modulus.
このように５本発明のニードルパンチ不織布は、繊維の
熱圧接部分と絡合部分の両方ともモジュラスの向上に寄
与するものであるので柔軟性を有しながら、しかも高モ
ジユラス不織布が得られると推察している。In this way, it is inferred that in the needle-punched nonwoven fabric of the present invention, both the thermocompression welded portion and the entangled portion of the fibers contribute to improving the modulus, and therefore a nonwoven fabric with flexibility and high modulus can be obtained. are doing.
（実施例） 以下、実施例により本発明を具体的に説明する。(Example) Hereinafter, the present invention will be specifically explained with reference to Examples.
なお、実施例で行った不織布の評価方法を下記にまとめ
て示す。In addition, the evaluation method of the nonwoven fabric carried out in the Example is summarized below.
ｆｌ）引張強力
定速伸長型試験機住荀東洋ボールドウィン製テンシロン
ＵＴＭ−４−１００型を用い、巾５１長さ３０ｃｍの試
験片をつかみ間隔２０Ｃ１１１，引張速度２０印／分、
ｎ＝１０の平均値から求めた。fl) Using Tensilon UTM-4-100 type tensile strength constant speed extension tester manufactured by Sumisho Toyo Baldwin, grip a test piece with width 51 and length 30 cm, interval 20C111, tensile speed 20 marks/min,
It was determined from the average value of n=10.
（２）３％伸長時の応力
上記引張強力測定に準じて測定を行い、Ｓ−Ｓ曲線から
３％伸長時の応力を求めた。(2) Stress at 3% elongation Measurement was carried out according to the tensile strength measurement described above, and the stress at 3% elongation was determined from the SS curve.
（３）シート表面の外観評価
ニードルパンチ不織布の外観を目視判定することで評価
を行った。評価基準は、下記のとおりである。(3) Evaluation of appearance of sheet surface Appearance of the needle-punched nonwoven fabric was evaluated by visual judgment. The evaluation criteria are as follows.
〇 −針穴が小さく、裏毛羽の少ないもの× ・・−針
穴が大きく、裏面の凹凸が目立つもの、あるいは、その
いずれかにシ亥当するもの
実施例１
融点２６０℃、極限粘度〔フェノール／四塩化エタン混
合溶媒、１：１（重量比）２０℃測定〕 〔η〕＝０．
６８のポリエチレンテレフタレートを孔径０．３５鰭、
ホール数１６０の紡糸口金を用い、溶融温度２８５℃で
紡糸口金より吐出し、紡糸速度４５００ ｍ ／分でエ
アーサッカーにて吸引し、延伸後の繊維を金網ネット上
に補集した。〇 - Items with small needle holes and less fluff on the lining × ...- Items with large needle holes and noticeable unevenness on the back surface, or items that are affected by either of the above Example 1 Melting point: 260°C, intrinsic viscosity [phenol] / tetrachloroethane mixed solvent, 1:1 (weight ratio) measured at 20°C] [η] = 0.
68 polyethylene terephthalate with a pore diameter of 0.35,
Using a spinneret with 160 holes, the fibers were discharged from the spinneret at a melting temperature of 285° C., and the fibers were suctioned with an air sucker at a spinning speed of 4500 m/min, and the drawn fibers were collected on a wire mesh net.
このようにして得た単糸デニール３デニールのポリエス
テル長繊維ウェブを熱圧接ロールとフラットロールから
なる熱圧接装置を使用し、熱圧接ロールの温度２１０℃
、熱圧接面積率１５％、エンボスパターンは、シートの
進行方向に平行な棒状破線模様を使用し、熱圧接加工を
行い、目付１４０ｇ／ｍのウェブとした。The polyester long fiber web with a single yarn denier of 3 denier obtained in this way was heated using a heat welding device consisting of a heat welding roll and a flat roll, and the temperature of the heat welding roll was 210°C.
, the heat-pressing welding area ratio was 15%, the embossed pattern was a bar-shaped broken line pattern parallel to the direction of travel of the sheet, and thermo-pressure welding was performed to obtain a web with a basis weight of 140 g/m.
次に、このウェブをニードパンチング機械（針：オルガ
ン社製、ＰＰＤ−１９４０）にて針密度４０回／ ｃｄ
でニードリングを行い、不織布とした。Next, this web was punched with a needle punching machine (needle: manufactured by Organ Co., Ltd., PPD-1940) at a needle density of 40 times/cd.
Needling was performed to make a nonwoven fabric.
得られた不織布をアクリル系樹脂（大日本インキ化学工
業■製品、商品名：ボンコー）ＪＨ−５６゜エマルジョ
ンタイプ）で固形分付着量１２％になるように含浸した
後、乾燥を行った。得られた製品の物性及び官能検査を
行い、結果を第１表に示す。The obtained nonwoven fabric was impregnated with an acrylic resin (product of Dainippon Ink & Chemicals, trade name: Bonco JH-56° emulsion type) to a solid content of 12%, and then dried. The obtained product was subjected to physical property and sensory tests, and the results are shown in Table 1.
実施例２〜７．比較例１〜３
ポリエチレンテレフタレート繊維の単糸デニール、熱圧
接面積率、ニードリングにおける針密度を変更した以外
、他の条件は、全て実施例１に準じてニードルバンチ不
織布を製造した。得られた結果を第１表に示す。Examples 2-7. Comparative Examples 1 to 3 Needle bunch nonwoven fabrics were produced in accordance with Example 1, except that the single yarn denier of the polyethylene terephthalate fibers, the heat-pressure contact area ratio, and the needle density in needling were changed. The results obtained are shown in Table 1.
実施例８
融点２２０℃、相対粘度（９８％硫酸使用、ポリマー濃
度１％、２５℃測定）２．５５のナイロン６を孔径０．
３５＋ｍｓ。Example 8 Nylon 6 with a melting point of 220°C and a relative viscosity of 2.55 (using 98% sulfuric acid, polymer concentration 1%, measured at 25°C) with a pore size of 0.
35+ms.
ホール数１６０の紡糸口金を用い、溶融温度２６０℃で
紡糸口金より吐出し、紡糸速度４５００ｍ ／分でエア
ーサッカーにて吸引し１延伸後の繊維を金網ネット上に
補集した。Using a spinneret with 160 holes, the fibers were discharged from the spinneret at a melting temperature of 260° C., and the fibers were drawn using an air sucker at a spinning speed of 4500 m 2 /min, and the fibers after one drawing were collected on a wire mesh net.
このようにして得た単糸デニール１．５デニールのナイ
ロン６ウェブを熱圧接ロール温度を１７０℃に変更する
以外、他の条件は、全て実施例１に準じて熱圧接加工を
行い、目付１８０ ｇ ／ ｒｄのウェブとした。次に
、このウェブを実施例１に準じてニードリング処理、樹
脂加工を行った。得られた製品の物性及び官能検査を行
い、結果を第１表に示す。The nylon 6 web with a single yarn denier of 1.5 denier obtained in this manner was heat-pressed and welded under the same conditions as in Example 1 except that the roll temperature was changed to 170°C, and the fabric weight was 180°C. g/rd web. Next, this web was subjected to needling treatment and resin processing according to Example 1. The obtained product was subjected to physical property and sensory tests, and the results are shown in Table 1.
表より明らかなように１本発明の不織布は、引張強力、
３％伸長時の応力のいずれも高く、かつシートの表面品
位も良好なものであった。As is clear from the table, the nonwoven fabric of the present invention has tensile strength,
The stress at 3% elongation was high, and the surface quality of the sheet was also good.
（発明の効果）
本発明によれば、不織布を構成する繊維の形態として熱
圧接部分とニードリングによる繊維の絡合をバランスよ
く混在させることにより、高モジュラスで、しかもシー
ト外観品位の良好なニードルバンチ不織布を得ることが
できる。(Effects of the Invention) According to the present invention, by mixing in a well-balanced manner the fibers constituting the nonwoven fabric with a thermo-compression welded portion and fiber entanglement by needling, a needle with high modulus and good sheet appearance quality can be obtained. A bunch nonwoven fabric can be obtained.
特許出願人 ユ＝亭力株式会社Patent applicant: Yu-Tei Riki Co., Ltd.
Claims (2)
性合成繊維フイラメントからなるウエブを開繊，積層せ
しめてなる不織布であって，該不織布が部分的に熱圧接
されるとともにニードリングにより絡合されており，上
記不織布の熱圧接面積率が１０〜４０％，ニードリング
における針密度が２０〜８０回／ｃｍ＾２である高モジ
ュラスニードルパンチ不織布。(1) A nonwoven fabric made by opening and laminating webs made of thermoplastic synthetic fiber filaments with a single yarn fineness of 1.5 to 15 deniers, the nonwoven fabric being partially heat-pressed and then needling. A high modulus needle-punched nonwoven fabric in which the nonwoven fabric has a heat-pressure contact area ratio of 10 to 40% and a needle density in needling of 20 to 80 times/cm^2.
を部分的に熱圧接した後，該ウエブを積層してニードル
パンチ不織布を製造するに際し，単糸繊度１．５〜１５
デニールの熱可塑性合成繊維フイラメントからなるウエ
ブを上記合成繊維の融点以下１０〜１００℃の温度で熱
圧接面積率が１０〜４０％になるようにエンボスロール
にて熱圧接を行い，次いで針密度２０〜８０回／ｃｍ＾
２にてニードリングを行い，積層不織布を得ることを特
徴とする高モジュラスニードルパンチ不織布の製造方法
。(2) When a web made of thermoplastic synthetic fiber filament is partially heat-pressed and then laminated to produce a needle-punched nonwoven fabric, the single yarn fineness is 1.5 to 15.
A web made of denier thermoplastic synthetic fiber filaments is heat-pressed using an embossing roll at a temperature of 10-100°C below the melting point of the synthetic fibers so that the heat-pressed area ratio is 10-40%, and then the needle density is 20%. ~80 times/cm^
A method for producing a high modulus needle-punched nonwoven fabric, which comprises performing needling in step 2 to obtain a laminated nonwoven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63208866A JP2749330B2 (en) | 1988-08-22 | 1988-08-22 | High modulus needle punched nonwoven fabric and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63208866A JP2749330B2 (en) | 1988-08-22 | 1988-08-22 | High modulus needle punched nonwoven fabric and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0261155A true JPH0261155A (en) | 1990-03-01 |
| JP2749330B2 JP2749330B2 (en) | 1998-05-13 |
Family
ID=16563417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63208866A Expired - Lifetime JP2749330B2 (en) | 1988-08-22 | 1988-08-22 | High modulus needle punched nonwoven fabric and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2749330B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04241160A (en) * | 1990-07-02 | 1992-08-28 | Polyfelt Gmbh | Method for producing needle span bond cloth |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133583A (en) * | 1975-05-12 | 1976-11-19 | Toray Industries | Manufacture of thermal plastic continuous filament unwoven fabric |
| JPS63162236A (en) * | 1986-12-26 | 1988-07-05 | 旭化成株式会社 | Laminate sheet for thermoforming and manufacture thereof |
-
1988
- 1988-08-22 JP JP63208866A patent/JP2749330B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133583A (en) * | 1975-05-12 | 1976-11-19 | Toray Industries | Manufacture of thermal plastic continuous filament unwoven fabric |
| JPS63162236A (en) * | 1986-12-26 | 1988-07-05 | 旭化成株式会社 | Laminate sheet for thermoforming and manufacture thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04241160A (en) * | 1990-07-02 | 1992-08-28 | Polyfelt Gmbh | Method for producing needle span bond cloth |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2749330B2 (en) | 1998-05-13 |
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