JPS63165564A - Heat-adhesive nonwoven sheet - Google Patents
Heat-adhesive nonwoven sheetInfo
- Publication number
- JPS63165564A JPS63165564A JP31367786A JP31367786A JPS63165564A JP S63165564 A JPS63165564 A JP S63165564A JP 31367786 A JP31367786 A JP 31367786A JP 31367786 A JP31367786 A JP 31367786A JP S63165564 A JPS63165564 A JP S63165564A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene
- component
- heat
- core
- nonwoven
- 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
- 239000000853 adhesive Substances 0.000 title claims description 14
- -1 polyethylene Polymers 0.000 claims description 34
- 239000000306 component Substances 0.000 claims description 28
- 239000004698 Polyethylene Substances 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 17
- 229920000573 polyethylene Polymers 0.000 claims description 17
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 14
- 239000008358 core component Substances 0.000 claims description 13
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims description 2
- 239000004711 α-olefin Substances 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims 1
- 239000004745 nonwoven fabric Substances 0.000 description 15
- 230000001070 adhesive effect Effects 0.000 description 11
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000004049 embossing Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
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）
本発明は熱により自己融着させて袋状やその他の形状に
加工して使用する長繊維不織布に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a long fiber nonwoven fabric that is self-fused by heat and processed into a bag shape or other shapes.
（従来の技術）
従来から不織布を用いて袋状の加工その他を行う際に接
着剤の使用や縫製工程を伴なわない方法として自己融着
による熱接着法が知られている。(Prior Art) A thermal bonding method using self-fusion has been known as a method that does not involve the use of adhesives or a sewing process when processing nonwoven fabric into bag shapes or the like.
これは不織布を構成している繊維成分の融点に近い熱を
加えることにより、不織布を構成する繊維を一部溶融さ
せて接着するものである。この方法は熱可塑性を示す繊
維からなる不織布であればどのようなものでも利用でき
る方法であり、このため特に熱接着工程を予測して作ら
れた不織布というものは存在していない。This involves applying heat close to the melting point of the fiber components that make up the nonwoven fabric, thereby partially melting and bonding the fibers that make up the nonwoven fabric. This method can be used with any nonwoven fabric made of thermoplastic fibers, and for this reason, there is no nonwoven fabric that is made specifically in anticipation of the thermal bonding process.
（発明が解決しようとする問題点）
上記のように従来熱による自己接着工程を予測して作ら
れた不織シートが存在しなかったので。(Problems to be Solved by the Invention) As mentioned above, there has been no conventional nonwoven sheet made by anticipating the self-adhesive process using heat.
実際に熱接着を行う際にはその接着条件に細心の注意を
払う必要があった。When actually performing thermal bonding, it was necessary to pay close attention to the bonding conditions.
つまり接着加工温度が高すぎる場合には、■接着部分以
外の部分溶解が生じて非接着部分と接着部分との境界の
部分が著しく弱くなる。■熱接着工程で使用する器具に
繊維の溶融物が付着する。In other words, if the bonding temperature is too high, (1) parts other than the bonded part will melt, and the boundary between the non-bonded part and the bonded part will be significantly weakened. ■Melted fibers adhere to equipment used in the thermal bonding process.
■接着部分が必要以上に溶解して接着部分に穴があくか
又は製品が接着部分から切断してしまう。■The adhesive part melts more than necessary, resulting in a hole in the adhesive part or the product being cut off from the adhesive part.
というような不都合が生じる。Such inconveniences arise.
また逆に接着加工温度が低すぎる場合は、全く接着しな
いか、接着力が著しく弱いということになる。On the other hand, if the bonding temperature is too low, either no bonding will occur or the bonding force will be extremely weak.
本発明の目的は特に細心の注意を払わなくても容易に熱
接着させることができ、かつ掻めて強い熱接着力を示す
不織シートを提供することにある。An object of the present invention is to provide a nonwoven sheet that can be easily thermally bonded without special care and that exhibits strong thermal adhesive strength when scratched.
（問題点を解決するための手段）
すなわち本発明は長繊維からなる不織ウェブが部分的に
熱圧接されて安定な形状を保っている不織シートであり
、該シートを構成する長繊維がポリエチレンとポリエチ
レンテレフタレートからなり、８亥ポリエチレンが該ポ
リエチレンテレフタレートの表面を全面的におおってい
る２成分芯鞘構造をもち、芯成分であるポリエチレンテ
レフタレートに対する鞘成分であるポリエチレンの重量
比が０．２〜３．０であることを特徴とする熱接着性不
織シートを要旨とするものである。(Means for Solving the Problems) That is, the present invention is a nonwoven sheet in which a nonwoven web made of long fibers is partially heat-pressed and kept in a stable shape, and the long fibers constituting the sheet are It is composed of polyethylene and polyethylene terephthalate, and has a two-component core-sheath structure in which the surface of the polyethylene terephthalate is completely covered by the polyethylene, and the weight ratio of the polyethylene that is the sheath component to the polyethylene terephthalate that is the core component is 0.2. The gist of the present invention is a heat-adhesive nonwoven sheet characterized by a temperature of 3.0 to 3.0.
以下本発明について詳しく述べる。The present invention will be described in detail below.
本発明で用いられる。ポリエチレンは１通常工業的に利
用されているポリエチレンであり、密度が０．９１０〜
０．９２５の低密度ポリエチレン、同じく０．９２６〜
０．９４０の中密度ポリエチレン、同じ＜ ０．９４１
〜０．９６５の高密度ポリエチレンのいずれもが対象と
なる。またその中でも炭素数４〜８のαオレフィンとエ
チレンを共重合させることによって得られる直鎖状低密
度ポリエチレンとして市販されているものはその可紡性
と不織布にした時の風合等の点から特に好ましい。Used in the present invention. Polyethylene is polyethylene that is usually used industrially and has a density of 0.910 to
0.925 low density polyethylene, also 0.926 ~
0.940 medium density polyethylene, same < 0.941
-0.965 high-density polyethylene are all targeted. Among them, commercially available linear low-density polyethylene obtained by copolymerizing α-olefin with 4 to 8 carbon atoms and ethylene is considered to have good spinnability and texture when made into a non-woven fabric. Particularly preferred.
また本発明で用いられるポリエチレンテレフタレートは
通常市販又は工業的に利用されているポリエチレンテレ
フタレートのうち特に繊維用として市販され、利用され
ているものであればよく。Furthermore, the polyethylene terephthalate used in the present invention may be any commercially available or industrially used polyethylene terephthalate, especially those commercially available and used for fibers.
具体的には固を粘度が０．５０〜１．２０の範囲のもの
が好ましい。Specifically, those having a viscosity of 0.50 to 1.20 are preferable.
本発明における繊維の２成分芯鞘構造は芯であるポリエ
チレンテレフタレートの表面を鞘であるポリエチレンが
全面にわたうておおっているような構造であればよく、
断面形状でいえば一般的な中心を共有する同心円状のも
のの他に、芯成分が偏心しているものや芯と鞘とも円形
以外の異形断面のものでもよい。The two-component core-sheath structure of the fiber in the present invention may be such that the surface of the polyethylene terephthalate core is completely covered with the polyethylene sheath,
In terms of cross-sectional shape, in addition to the general concentric circular shape that shares a common center, the core component may be eccentric, or both the core and sheath may have irregular cross-sections other than circular.
芯成分に対する鞘成分の重量比を０．２〜３．０と限定
したのは、この比が０．２以下の場合は接着成分となる
ポリエチレンの量が不足し熱接着した時に充分な接着部
の強力が得られず、また３、０以上の場合には不織布自
体の強力を担っている芯成分の量が不足するためシート
自体の強力が弱くなってしまうという理由による。The reason why the weight ratio of the sheath component to the core component is limited to 0.2 to 3.0 is because if this ratio is less than 0.2, there will be insufficient amount of polyethylene as an adhesive component, and there will be insufficient adhesive area when thermally bonded. This is because if the strength is 3.0 or more, the strength of the sheet itself becomes weak because the amount of the core component responsible for the strength of the nonwoven fabric itself is insufficient.
本発明においてこの２成分芯鞘構造をもつ連続フィラメ
ントの繊維径については何ら制限されるものではないが
１通常不織布として利用されている繊維径が好ましく、
繊廣で表せば１．０〜１０デニールが望ましい。In the present invention, the fiber diameter of the continuous filament having a two-component core-sheath structure is not limited in any way, but it is preferably a fiber diameter that is normally used as a nonwoven fabric.
In terms of fineness, 1.0 to 10 deniers are desirable.
このような、２成分芯鞘構造をもつ連続フィラメントは
従来公知の複合紡糸装置を用いて製造することができる
。またこの連続フィラメントを不織ウェブにするには、
従来公知の一般的な方法。Such a continuous filament having a two-component core-sheath structure can be produced using a conventionally known composite spinning device. In addition, to make this continuous filament into a nonwoven web,
Conventionally known general method.
例えば空気圧を利用して繊維を延伸しつつ、一般的に使
用されている開繊装置を利用して開繊した後、移動する
網状体の上に堆積しつつ移送するというような方法が用
いられる。また該不織ウェブを部分的に熱圧接する方法
としては加熱された彫刻ロールによるエンボシングが一
般的である。この際の熱圧接温度は鞘成分のポリエチレ
ンの融点以上であると熱圧接ロール等にシートが融着し
。For example, a method is used in which the fibers are stretched using air pressure, opened using a commonly used fiber opening device, and then transported while being deposited on a moving network. . Embossing using a heated engraving roll is generally used as a method for partially heat-pressing the nonwoven web. If the thermocompression temperature at this time is higher than the melting point of the polyethylene as the sheath component, the sheet will be fused to the thermocompression roll or the like.
また熱圧接点以外の連続フィラメントの鞘成分も一部溶
融し、芯成分のポリエステルの表面を完全におおわな（
なってしまうので、上記融点以下の温度で部分的に熱圧
接することが望ましい。In addition, part of the sheath component of the continuous filament other than the thermocompression contact melts, completely covering the surface of the polyester core component (
Therefore, it is desirable to perform partial thermo-pressure welding at a temperature below the above melting point.
（作 用）
本発明で得られた不織シートはそれを構成する連続フィ
ラメントが２成分芯鞘構造をもち、かつ鞘成分のポリエ
チレンが芯成分のポリエチレンテレフタレートに比べて
１００℃以上も低い融点を示すので、不織布を加工して
使用する際、芯成分のポリエチレンテレフタレートの融
点に比べてかなり低い温度で熱接着することができる。(Function) In the nonwoven sheet obtained by the present invention, the continuous filaments constituting the sheet have a two-component core-sheath structure, and the polyethylene as the sheath component has a melting point that is 100°C or more lower than that of the polyethylene terephthalate as the core component. Therefore, when the nonwoven fabric is processed and used, it can be thermally bonded at a temperature considerably lower than the melting point of the core component polyethylene terephthalate.
このとき熱接着に際して鞘成分のポリエチレンが完全に
溶解しても芯成分のポリエチレンテレフタレートは何ら
影響をうけることなく繊維形状を保っていることができ
るので、従来の単成分フィラメントから成る不織布のよ
うに非接着部分と接着部分の境界で切れるようなことは
ない。また前述のように芯成分と鞘成分の融点差が大き
いために、熱接着に際し鞘成分のポリエチレンが充分に
融着する温度であれば熱接着ができるために、最適熱接
着温度の範囲が広く、従来の単一成分からなる不織シー
トのように微妙な温度管理を行うことなく、従来の単一
成分からなる不織布より強固に熱接着することができる
という特徴を有している。At this time, even if the polyethylene sheath component is completely dissolved during thermal bonding, the polyethylene terephthalate core component can maintain its fiber shape without being affected in any way. There will be no breakage at the boundary between the non-adhesive part and the adhesive part. In addition, as mentioned above, since the difference in melting point between the core component and the sheath component is large, thermal bonding can be performed at a temperature that sufficiently fuses the polyethylene of the sheath component during thermal bonding, resulting in a wide range of optimal thermal bonding temperatures. It has the characteristic that it can be thermally bonded more firmly than conventional nonwoven fabrics made of a single component, without requiring delicate temperature control unlike conventional nonwoven sheets made of a single component.
（実施例） 実施例により本発明を具体的に説明する。(Example) The present invention will be specifically explained with reference to Examples.
なお、不織布の剥離強力の評価としては熱接着した試料
の両端を定速伸長型引張試験機を用いてつかみ間隔１０
ｃｍと１００％／分の伸長率の条件で引張った時の伸度
一応力曲線の最大応力を測定した。In addition, to evaluate the peel strength of the nonwoven fabric, both ends of the heat-bonded sample were grasped using a constant speed extension type tensile tester, and the interval was 10.
cm and the maximum stress of the elongation-stress curve when pulled under the conditions of an elongation rate of 100%/min was measured.
またポリエチレンの融点はパーキンエルマー社製ＤＳＣ
−２型の示差走査熱量計を用い昇温速度２０℃／分で測
定し、ポリエチレンテレフタレートの固有粘度はフェノ
ールと四塩化エタンとの等重量混合溶媒を用い、濃度０
．５ｇ／１００ｍ１．温度２０℃の条件で測定した。The melting point of polyethylene is determined by PerkinElmer's DSC
The intrinsic viscosity of polyethylene terephthalate was measured using a 2-type differential scanning calorimeter at a heating rate of 20°C/min.
．． 5g/100m1. Measurement was performed at a temperature of 20°C.
実施例１
固有粘度が０．７０のポリエチレンテレフタレートを芯
成分とし、密度が０．９３７ｇ／ｃ＋ｊ、 Ａ Ｓ Ｔ
Ｍ−Ｄ−１２３８（Ｅ）法によるメルトインデクス値が
２５ｇ７１０分、融点が１２８℃である直鎖状低密度ポ
リエチレンを鞘成分とする２成分芯鞘構造で、単糸繊度
が３．０デニール、芯成分に対する鞘成分の重量比が１
のフィラメントを紡糸し、空気圧で延伸し。Example 1 The core component is polyethylene terephthalate with an intrinsic viscosity of 0.70, and the density is 0.937 g/c+j, A S T
It has a two-component core-sheath structure whose sheath component is linear low-density polyethylene with a melt index value of 25 g 710 minutes by the MD-1238 (E) method and a melting point of 128°C, and a single yarn fineness of 3.0 denier. The weight ratio of the sheath component to the core component is 1
The filament is spun and drawn using air pressure.
開繊した後、移動する多孔質帯状体に堆積しウェブ化し
た。このウェブを１１０℃に加熱した彫刻ロールと同じ
り１１０℃に加熱したプラットロールからなるエンボス
装置により部分的に熱圧接し、最終的に目付が４０ｇ／
ｒｄである不織シートを得た。After opening, the fibers were deposited on a moving porous band and formed into a web. This web is partially heat-pressed by an embossing device consisting of an engraving roll heated to 110°C and a plat roll heated to 110°C, and the final basis weight is 40g/
A nonwoven sheet of RD was obtained.
比較例１
実施例１と同じポリエチレンテレフタレートを紡糸し、
実施例１と同じ装置で延伸、開繊、堆積し、不織ウェブ
を得た。これを実施例１と同じエンボス装置で、それぞ
れのロールを２４０℃に加熱して部分的に熱圧接し、目
付が４０ｇ／ ｎ？である不織シートを得た。Comparative Example 1 The same polyethylene terephthalate as in Example 1 was spun,
A nonwoven web was obtained by stretching, opening, and stacking using the same equipment as in Example 1. Using the same embossing device as in Example 1, each roll was heated to 240°C and partially heat-pressed, resulting in a fabric weight of 40g/n? A nonwoven sheet was obtained.
これらの実施例１と比較例１の不織布の熱接着性を評価
する目的で種々の条件で熱接着テストを行った。熱接着
条件と接着性の評価結果を表−１表−２に示した。In order to evaluate the thermal adhesion properties of the nonwoven fabrics of Example 1 and Comparative Example 1, thermal adhesion tests were conducted under various conditions. The thermal bonding conditions and adhesive evaluation results are shown in Table 1 and Table 2.
熱接着性のテストはシートの巻取方向に長り１ｃｍｍ
Ｘ ３ Ｃ１１１の長方形に切り出し・たもの２枚を重
ね。The thermal adhesion test was performed using a sheet with a length of 1 cm in the winding direction.
Cut out two rectangles of X 3 C111 and overlap them.
片端より３ｃｍの所を１表面がポリテトラフルオロエチ
レン（商品名テフロン）でコートされた幅３龍の加熱ヒ
ータで１秒間圧接着した。この時の圧接時の圧力は１
、２ ｋｇ ／ ｃＩａであった。A portion 3 cm from one end was pressure-bonded for 1 second using a heater with a width of 3 mm and one surface coated with polytetrafluoroethylene (trade name: Teflon). The pressure during welding at this time is 1
, 2 kg/cIa.
表−１
実施例１
表−１と表−２から判明するように１本発明にられば熱
接着温度が低い温度で接着させることができ、その熱接
着温度の管理範囲が広い、逆に比較例にあるように従来
の単成分からなる不織布シートは熱接着温度が高くせね
ば接着させることができないし、その熱接着温度の管理
範囲が狭い。Table 1 Example 1 As can be seen from Tables 1 and 2, according to the present invention, the thermal bonding temperature can be bonded at a low temperature, and the control range of the thermal bonding temperature is wide. As shown in the example, conventional single-component nonwoven fabric sheets cannot be bonded unless the thermal bonding temperature is high, and the control range for the thermal bonding temperature is narrow.
熱接着後の接着性の評価結果においても本発明による実
施例１の場合には剥離強力が高くて、更に剥離状況もす
ぐれていることが示されている。The evaluation results of the adhesion after thermal bonding also show that Example 1 according to the present invention has high peeling strength and also has an excellent peeling condition.
（発明の効果）
本発明によれば、２成分芯鞘構造でありながら芯成分の
ポリエチレンテレフタレートと鞘成分のポリエチレンと
で１００℃以上の融点差を有するため、ポリエチレンテ
レフタレートの融点よりかなり低温で芯成分には何ら影
響しないで熱接着できる。それでも鞘成分が完全に溶融
しているので従来の単成分フィラメントからなる不織布
のように接着部分の境界で切れることもなく優れた接着
性を示す。また最適熱接着温度幅が広範囲であるので、
該温度管理を容易に行うことができ、より強固に熱接着
が可能な不織シートを得ることができる。(Effects of the Invention) According to the present invention, although it has a two-component core-sheath structure, polyethylene terephthalate as a core component and polyethylene as a sheath component have a melting point difference of 100°C or more. It can be thermally bonded without affecting the components in any way. Even so, since the sheath component is completely melted, it does not break at the boundary of the bonded area unlike conventional nonwoven fabrics made of single-component filaments, and exhibits excellent adhesive properties. In addition, the optimum thermal bonding temperature range is wide, so
The temperature can be easily controlled, and a nonwoven sheet that can be more firmly bonded by heat can be obtained.
Claims (2)
て安定な形状を保つている不織シートであり，該シート
を構成する長繊維がポリエチレンとポリエチレンテレフ
タレートからなり、該ポリエチレンが該ポリエチレンテ
レフタレートの表面を全面的におおっている２成分芯鞘
構造をもち，芯成分であるポリエチレンテレフタレート
に対する鞘成分であるポリエチレンの重量比が０．２〜
３．０であることを特徴とする熱接着性不織シート。(1) A nonwoven sheet in which a nonwoven web made of long fibers is partially heat-pressed and kept in a stable shape, and the long fibers that make up the sheet are made of polyethylene and polyethylene terephthalate, and the polyethylene is It has a two-component core-sheath structure that completely covers the surface of polyethylene terephthalate, and the weight ratio of polyethylene, which is a sheath component, to polyethylene terephthalate, which is a core component, is 0.2 to
3.0.
合体からなる直鎖状低密度ポリエチレンである特許請求
の範囲１項記載の熱接着性不織シート。(2) The heat-adhesive nonwoven sheet according to claim 1, wherein the polyethylene is linear low-density polyethylene made of a copolymer of α-olefin and ethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31367786A JPH0814069B2 (en) | 1986-12-26 | 1986-12-26 | Heat-bondable non-woven sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31367786A JPH0814069B2 (en) | 1986-12-26 | 1986-12-26 | Heat-bondable non-woven sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63165564A true JPS63165564A (en) | 1988-07-08 |
| JPH0814069B2 JPH0814069B2 (en) | 1996-02-14 |
Family
ID=18044178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31367786A Expired - Lifetime JPH0814069B2 (en) | 1986-12-26 | 1986-12-26 | Heat-bondable non-woven sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814069B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02139468A (en) * | 1988-11-16 | 1990-05-29 | Unitika Ltd | Nonwoven sheet for agriculture |
| JPH02182961A (en) * | 1988-12-29 | 1990-07-17 | Toray Ind Inc | Filament nonwoven fabric and production thereof |
| JPH02182960A (en) * | 1988-12-29 | 1990-07-17 | Toray Ind Inc | Filament nonwoven fabric and production thereof |
| JPH02182962A (en) * | 1988-12-29 | 1990-07-17 | Toray Ind Inc | Filament nonwoven fabric and production thereof |
| JPH02242958A (en) * | 1989-03-16 | 1990-09-27 | Asahi Chem Ind Co Ltd | Unwoven fabric with thermal adhesion property |
| JP2013522491A (en) * | 2010-03-19 | 2013-06-13 | ダウ グローバル テクノロジーズ エルエルシー | Composite fiber |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4315663B2 (en) * | 2002-10-17 | 2009-08-19 | ユニチカ株式会社 | Method for producing nonwoven fabric comprising core-sheath composite long fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4937747A (en) * | 1972-08-16 | 1974-04-08 | ||
| JPS5438214A (en) * | 1977-08-31 | 1979-03-22 | Kawasaki Steel Co | Steel material having good resistivity to hydrogenninduceddcracking for use as line pipes |
| JPS57176217A (en) * | 1981-01-29 | 1982-10-29 | Akzo Nv | Two-component type fiber, nonwoven fabric comprising same and production thereof |
-
1986
- 1986-12-26 JP JP31367786A patent/JPH0814069B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4937747A (en) * | 1972-08-16 | 1974-04-08 | ||
| JPS5438214A (en) * | 1977-08-31 | 1979-03-22 | Kawasaki Steel Co | Steel material having good resistivity to hydrogenninduceddcracking for use as line pipes |
| JPS57176217A (en) * | 1981-01-29 | 1982-10-29 | Akzo Nv | Two-component type fiber, nonwoven fabric comprising same and production thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02139468A (en) * | 1988-11-16 | 1990-05-29 | Unitika Ltd | Nonwoven sheet for agriculture |
| JPH02182961A (en) * | 1988-12-29 | 1990-07-17 | Toray Ind Inc | Filament nonwoven fabric and production thereof |
| JPH02182960A (en) * | 1988-12-29 | 1990-07-17 | Toray Ind Inc | Filament nonwoven fabric and production thereof |
| JPH02182962A (en) * | 1988-12-29 | 1990-07-17 | Toray Ind Inc | Filament nonwoven fabric and production thereof |
| JPH02242958A (en) * | 1989-03-16 | 1990-09-27 | Asahi Chem Ind Co Ltd | Unwoven fabric with thermal adhesion property |
| JP2013522491A (en) * | 2010-03-19 | 2013-06-13 | ダウ グローバル テクノロジーズ エルエルシー | Composite fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0814069B2 (en) | 1996-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |