JPH0814069B2 - Heat-bondable non-woven sheet - Google Patents
Heat-bondable non-woven sheetInfo
- Publication number
- JPH0814069B2 JPH0814069B2 JP31367786A JP31367786A JPH0814069B2 JP H0814069 B2 JPH0814069 B2 JP H0814069B2 JP 31367786 A JP31367786 A JP 31367786A JP 31367786 A JP31367786 A JP 31367786A JP H0814069 B2 JPH0814069 B2 JP H0814069B2
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene
- heat
- component
- woven sheet
- core
- 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
- -1 polyethylene Polymers 0.000 claims description 36
- 239000000306 component Substances 0.000 claims description 28
- 239000004698 Polyethylene Substances 0.000 claims description 20
- 229920000573 polyethylene Polymers 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 16
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 16
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 16
- 239000008358 core component Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims description 2
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 2
- 239000004707 linear low-density polyethylene 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
- 238000000034 method Methods 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000004049 embossing Methods 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XGIAHMUOCFHQTI-UHFFFAOYSA-N Cl.Cl.Cl.Cl.CC Chemical compound Cl.Cl.Cl.Cl.CC XGIAHMUOCFHQTI-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 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
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000003892 spreading 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)
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 (Field of Industrial Application) The present invention relates to a long-fiber nonwoven fabric which is self-fused with heat to be processed into a bag shape or another shape for use.
（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。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。(Prior Art) Conventionally, a thermal bonding method by self-fusion has been known as a method that does not involve the use of an adhesive or a sewing process when performing bag-shaped processing and the like using a nonwoven fabric. By applying heat close to the melting point of the fiber components that make up the non-woven fabric,
The fibers constituting the nonwoven fabric are partially melted and bonded. This method can be used for any non-woven fabric made of thermoplastic fibers, and therefore, there is no non-woven fabric made by specifically predicting the heat-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，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。(Problems to be solved by the invention) Since there is no non-woven sheet made by predicting the conventional self-adhesion process by heat as described above, when the actual heat-bonding is performed, the bonding condition is It was necessary to pay close attention.
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，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，というような不都合が生じる。In other words, if the bonding temperature is too high, the parts other than the bonded part will melt and the boundary part between the non-bonded part and the bonded part will be significantly weakened. The fiber melt will adhere to the equipment used in the heat bonding process. However, there arises such a disadvantage that the adhesive portion is unnecessarily melted and a hole is formed in the adhesive portion, or the product is cut from the adhesive portion.
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 contrary, if the bonding temperature is too low, it means that the bonding is not carried out at all or the bonding strength is 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，かつ極めて強い熱接着力を不
織シートを提供することにある。An object of the present invention is to provide a non-woven sheet which can be easily heat-bonded without particular care and has an extremely strong heat-bonding force.
（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エブがポリエ
チレンの融点以下の温度で部分的に熱圧接されて安定な
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を要旨とするもので
ある。(Means for Solving the Problems) That is, the present invention is a non-woven sheet in which a non-woven web made of long fibers is partially heat-pressed at a temperature below the melting point of polyethylene to maintain a stable shape. The long fibers constituting the sheet are composed of polyethylene and polyethylene terephthalate, and the polyethylene has a two-component core-sheath structure in which the surface of the polyethylene terephthalate is entirely covered. A heat-bondable non-woven sheet is characterized by a weight ratio of 0.2 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，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0.910〜0.9
25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，同じく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。またその中での炭素数４〜
８のα−オレフイ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。The polyethylene used in the present invention is polyethylene which is usually used industrially and has a density of 0.910 to 0.9.
25 low density polyethylene, 0.926 to 0.940 medium density polyethylene, and 0.941 to 0.965 high density polyethylene. In addition, carbon number of 4
Commercially available linear low-density polyethylene obtained by copolymerizing α-olefin with ethylene and the low-density polyethylene of 8 are particularly preferable from the viewpoints of their spinnability and texture when formed into a nonwoven fabric.
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，具体的には固有粘度が0.50
〜1.20の範囲のものが好ましい。The polyethylene terephthalate used in the present invention may be any commercially available or industrially used polyethylene terephthalate, particularly those commercially available and used for fibers. Specifically, the intrinsic viscosity is 0.50.
Those in the range of 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
が全面にわたっ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 any structure in which the surface of polyethylene terephthalate as the core is covered with polyethylene as the sheath over the entire surface, and concentric circles sharing a common center in sectional shape In addition to the cylindrical shape, the core component may be eccentric, or the core and the sheath may have an irregular cross section other than a circular shape.
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未満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を超える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 weight ratio of the sheath component to the core component was limited to 0.2 to 3.0 because when the ratio was less than 0.2, the amount of polyethylene as the adhesive component was insufficient and sufficient strength of the adhesive part could not be obtained when heat-bonded. If it exceeds 3.0, the strength of the sheet itself will be weakened due to the lack of the amount of core component that is responsible for the strength of the nonwoven fabric itself.
本発明においてこの２成分芯鞘構造をもつ連続フイラ
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，通常不織布として利用されている繊維径が好まし
く，繊度で表せば1.0〜10デニールが望ましい。In the present invention, the fiber diameter of the continuous filament having the two-component core-sheath structure is not limited at all, but the fiber diameter usually used as a nonwoven fabric is preferable, and in terms of fineness, it is preferably 1.0 to 10 denier.
このような,2成分芯鞘構造をもつ連続フイラメントは
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。またこの連続フイラメントを不織ウエブにするに
は，従来公知の一般的な方法，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
エ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，また熱圧接点以外の連
続フイ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くなってしまうので，上
記ポリエチレンの融点以下の温度で部分的に熱圧接する
ことが必要である。Such a continuous filament having a two-component core-sheath structure can be manufactured using a conventionally known composite spinning device. Further, in order to make this continuous filament into a non-woven web, a fiber is stretched by using a generally-known fiber-spreading device while stretching the fiber by using a conventionally known general method, for example, air pressure. After that, a method such as transporting while depositing on the moving mesh is used. Further, as a method for partially hot-pressing the nonwoven web, embossing with a heated engraving roll is generally used. If the hot pressing temperature at this time is higher than the melting point of the polyethylene of the sheath component, the sheet will be fused to the hot pressing roll, etc., and the sheath component of the continuous filament other than the hot press contact will also partially melt, and the core component polyester Since the surface is completely covered, it is necessary to partially heat-bond the polyethylene at a temperature below the melting point of the polyethylene.
（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
イラメントが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，不織布を熱接着加
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。このとき熱接着に際して鞘成分のポリエチレンが
完全に溶融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，従来の単成分フイ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。(Working) The non-woven sheet obtained by the present invention has a continuous filament having a two-component core-sheath structure, and polyethylene as a sheath component has a melting point lower than 100 ° C. as compared with polyethylene terephthalate as a core component. Therefore, when the non-woven fabric is heat-bonded and used, it can be heat-bonded at a temperature considerably lower than the melting point of polyethylene terephthalate as the core component. At this time, even if the polyethylene of the sheath component is completely melted during heat bonding, the polyethylene terephthalate of the core component can maintain the fiber shape without any influence, so that it can be treated like a non-woven fabric made of conventional single component filament There is no break at the boundary between the non-bonded part and the bonded part. In addition, as described above, since the difference in melting point between the core component and the sheath component is large, heat bonding can be performed at a temperature at which polyethylene of the sheath component is sufficiently fused during heat bonding, so that the optimum heat bonding temperature range is wide. It has the feature that it can be bonded by heat more firmly than the conventional non-woven fabric made of a single component without performing delicate temperature control unlike the conventional non-woven sheet 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) An example demonstrates this invention concretely.
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％／分の伸長速度の条件で引張った時の伸度−
応力曲線の最大応力を測定した。To evaluate the peel strength of the non-woven fabric, both ends of the heat-bonded sample were clamped with a constant-velocity extension type tensile tester at an interval of 10
cm and elongation at 100% / min elongation rate-
The maximum stress of the stress curve 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エノー
ルと四塩化エタンとの等重量混合溶媒を用い，濃度0.5g
/100ml,温度20℃の条件で測定した。The melting point of polyethylene is DSC manufactured by Perkin Elmer.
-2 type differential scanning calorimeter at a heating rate of 20 ° C / min. The intrinsic viscosity of polyethylene terephthalate was 0.5g using a mixed solvent of equal weight of phenol and ethane tetrachloride.
It was measured under the conditions of / 100 ml and 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/cm3,ASTM−Ｄ−1238（Ｅ）法に
よりメルトインデクス値が25g/10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1.0であるフイラメントを紡糸し，空気圧
で延伸し，開繊した後，移動する多孔質帯状体上に堆積
しウエブ化した。このウエブを110℃に加熱した彫刻ロ
ールの同じく110℃に加熱したフ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/m2である不織シートを得た。Example 1 A straight chain having a core component of polyethylene terephthalate having an intrinsic viscosity of 0.70, a density of 0.937 g / cm 3 , a melt index value of 25 g / 10 minutes and a melting point of 128 ° C. according to the ASTM-D-1238 (E) method. -Component core-sheath structure with low-density polyethylene as the sheath component, spinning filaments with a single yarn fineness of 3.0 denier and a weight ratio of the sheath component to the core component of 1.0, stretched with air pressure, and opened. It was deposited on the moving porous strip and turned into a web. This web was partially heat-pressed by an embossing device consisting of an engraving roll heated to 110 ° C and a flat roll also heated to 110 ° C.
A non-woven sheet having a weight of 40 g / m 2 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
エブを得た。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/m2である不織シートを得た。Comparative Example 1 The same polyethylene terephthalate as in Example 1 was spun and stretched, opened and deposited by the same apparatus as in Example 1 to obtain a nonwoven web. Using the same embossing device as in Example 1, each roll was heated to 240 ° C. and partially heat-pressed,
A non-woven sheet having a basis weight of 40 g / m 2 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。A thermal adhesive test was conducted under various conditions for the purpose of evaluating the thermal adhesiveness of the nonwoven fabrics of Example 1 and Comparative Example 1. Table 1 and Table 2 show the thermal adhesion conditions and the evaluation results of the adhesiveness.
熱接着性のテストはシートの巻取方向に長く10cm×3c
mの長方形に切り出したもの２枚を重ね，片端より3cmの
所を，表面がポリテトラフルオロエチエン（商品名テフ
ロン）でコートされた幅3mm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1.2kg/cm2であった。Heat adhesion test is 10cm x 3c long in the sheet winding direction
Two pieces cut out in a rectangle of m were stacked, and a portion 3 cm from one end was pressure-bonded for 1 second with a heater with a width of 3 mm whose surface was coated with polytetrafluoroethene (trade name Teflon). The pressure at the time of pressure contact at this time was 1.2 kg / cm 2 .
表−１と表−２から判明するように，本発明によるれ
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。 As can be seen from Table-1 and Table-2, the heat-bonding temperature according to the present invention can be bonded at a low temperature, and the control range of the heat-bonding temperature is wide. A non-woven sheet made of a single component cannot be bonded unless the heat bonding temperature is high, and the control range of the heat 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 adhesiveness after heat bonding also show that in Example 1 according to the present invention, the peel strength is high and the peeling condition is also excellent.
（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イ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。(Effect of the Invention) According to the present invention, since the core component polyethylene terephthalate and the sheath component polyethylene have a melting point difference of 100 ° C. or more even though they have a two-component core-sheath structure, the core is considerably lower than the melting point of polyethylene terephthalate It can be heat-bonded without affecting the components. Even so, since the sheath component is completely melted, it does not break at the boundary of the bonded portion like the conventional non-woven fabric composed of a single component filament and exhibits excellent adhesiveness. Further, since the optimum heat-bonding temperature range is wide, it is possible to easily control the temperature and obtain a non-woven sheet capable of stronger heat-bonding.
Claims (2)
の融点以下の温度で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，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 non-woven sheet made of long fibers, which is kept in a stable shape by being partially heat-pressed at a temperature lower than the melting point of polyethylene, and the long fibers constituting the sheet are made of polyethylene. The polyethylene terephthalate has a two-component core-sheath structure in which the polyethylene covers the entire surface of the polyethylene terephthalate, and the weight ratio of polyethylene as a sheath component to polyethylene terephthalate as a core component is 0.2 to 3.0. A heat-adhesive non-woven sheet characterized by:
の共重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 non-woven sheet according to claim 1, wherein the polyethylene is a linear low-density polyethylene comprising 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 JPS63165564A (en) | 1988-07-08 |
| JPH0814069B2 true 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004035900A1 (en) * | 2002-10-17 | 2004-04-29 | Unitika Ltd. | Nonwoven fabric made of core/sheath type composite fiber and process for producing the same |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2632978B2 (en) * | 1988-11-16 | 1997-07-23 | ユニチカ株式会社 | Agricultural nonwoven sheet |
| JP2586126B2 (en) * | 1988-12-29 | 1997-02-26 | 東レ株式会社 | Long-fiber nonwoven fabric and method for producing the same |
| JP2581201B2 (en) * | 1988-12-29 | 1997-02-12 | 東レ株式会社 | Long-fiber nonwoven fabric and method for producing the same |
| JP2586125B2 (en) * | 1988-12-29 | 1997-02-26 | 東レ株式会社 | Long-fiber nonwoven fabric and its manufacturing method |
| JPH02242958A (en) * | 1989-03-16 | 1990-09-27 | Asahi Chem Ind Co Ltd | Unwoven fabric with thermal adhesion property |
| BR112012023526A2 (en) * | 2010-03-19 | 2016-07-26 | Dow Global Technologies Llc | bicomponent fiber, process for producing a bicomponent fiber, process for making a filament fabric, nonwoven fabric and article |
Family Cites Families (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
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004035900A1 (en) * | 2002-10-17 | 2004-04-29 | Unitika Ltd. | Nonwoven fabric made of core/sheath type composite fiber and process for producing the same |
| KR101115193B1 (en) * | 2002-10-17 | 2012-02-24 | 유니티카 가부시끼가이샤 | Nonwoven fabric made of core/sheath type composite fiber and process for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63165564A (en) | 1988-07-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |