JP2803165B2 - Thermal adhesive composite fiber - Google Patents
Thermal adhesive composite fiberInfo
- Publication number
- JP2803165B2 JP2803165B2 JP1134038A JP13403889A JP2803165B2 JP 2803165 B2 JP2803165 B2 JP 2803165B2 JP 1134038 A JP1134038 A JP 1134038A JP 13403889 A JP13403889 A JP 13403889A JP 2803165 B2 JP2803165 B2 JP 2803165B2
- Authority
- JP
- Japan
- Prior art keywords
- oval
- core
- center
- hollow portion
- cross
- 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 - Fee Related
Links
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- Nonwoven Fabrics (AREA)
- Multicomponent Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はシース・コア型の熱接着性複合繊維に関し、
特に崇高性と弾性回復性に優れ、不織布用素材として好
適な中空複合繊維に関するものである。Description: TECHNICAL FIELD The present invention relates to a sheath-core type heat-bondable conjugate fiber,
In particular, the present invention relates to a hollow conjugate fiber having excellent sublimeness and elastic recovery and suitable as a material for nonwoven fabric.
［従来の技術］ 融点の異なる２成分をシース・コア型に複合してなる
熱接着性複合繊維は、接着剤を使用することなく加熱処
理するだけで繊維同士を接合することができるので、ホ
ルマリン等の有害物質が含有されてはならない衛生材料
をはじめ様々の不織布用素材として利用されている。ま
た最近では、シース・コア型複合繊維を構成する芯部の
長手方向に中空部を形成し、該中空部の存在によって曲
げモーメントを大きくし崇高性と弾性回復性を高める方
法も検討されている。[Prior Art] A heat-adhesive conjugate fiber obtained by compounding two components having different melting points into a sheath-core type can be bonded to each other only by heat treatment without using an adhesive. It is used as a material for various nonwoven fabrics, including sanitary materials which must not contain harmful substances such as harmful substances. Recently, a method of forming a hollow portion in a longitudinal direction of a core portion constituting a sheath-core type composite fiber and increasing a bending moment by the presence of the hollow portion to enhance sublimeness and elastic recovery has been studied. .
［発明が解決しようとする課題］ しかしながら芯部に中空部の形成されたシース・コア
型の熱接着性複合繊維といえども、需要者の要求を十分
に満たすものとは言えず、殊におむつ用不織布等として
用いた場合は、崇高性不足および弾性回復性不足により
流体の逆流が多くなり、着用感を悪くするといった問題
が指摘されている。本発明はこうした事情に着目してな
されたものであって、その目的は、不織布の有する優れ
た柔軟性，風合い，強度等の特徴を損なうことなく、崇
高性および弾性回復性の更に改善された熱接着性複合繊
維を提供しようとするものである。[Problems to be Solved by the Invention] However, even a sheath-core type heat-adhesive conjugate fiber having a hollow portion formed in a core portion does not sufficiently satisfy the demands of consumers, and in particular, diapers. When used as a nonwoven fabric for use, it has been pointed out that there is a problem that the backflow of the fluid increases due to insufficient sublimeness and elastic recovery, and the wearing feeling is deteriorated. The present invention has been made in view of such circumstances, and its object is to further improve sublimeness and elastic recovery without impairing the characteristics of the nonwoven fabric such as excellent flexibility, texture, and strength. It is intended to provide a heat-adhesive conjugate fiber.
［課題を解決するための手段］ 上記課題を解決することのできた本発明に係る複合繊
維の構成は、重合体からなる横断面卵形の鞘部内に、卵
形の中空部を有し、前記鞘部を構成する重合体よりも20
℃以上高い融点を有する重合体からなる横断面卵形の芯
部が内装されると共に、これら卵形鞘部、卵形芯部、卵
形中空部は、それら各卵形の長半径が略同一方向に向い
て複合された熱接着性複合繊維であって、該複合繊維
は、少なくとも芯部の横断面における長半径と短半径の
比が1.05〜1.50である卵形状を呈すると共に、前記中空
部の中心（但し、卵形の中心とは長径の中心を意味す
る：以下同じ）は、前記芯部及／又は鞘部に対して下記
の値を満たす様に偏心し、 中空部の中心と芯部の中心が偏心しているときは、両
者の中心距離と芯部の長半径の比が0.1〜0.4、 中空部の中心と鞘部の中心が偏心しているときは、両
者の中心間距離と鞘部の長半径の比が0.1〜0.4、 中空部の中心と芯部及び鞘部の各中心が偏心している
ときは、中空部と芯部の中心間距離と芯部の長半径の
比、および中空部と鞘部の中心間距離と鞘部の長半径の
比のうち少なくとも一方が0.1以上であり、且つ両方が
0.4以下、 且つ中空部横断面積の芯部横断面積に対する面積比率が
５〜40％であるところに要旨を有するものである。[Means for Solving the Problems] The configuration of the conjugate fiber according to the present invention that can solve the above problems has an egg-shaped hollow portion in a cross-sectional egg-shaped sheath portion made of a polymer, 20 more than the polymer that makes up the sheath
A cross-section oval core made of a polymer having a high melting point of at least ℃ is provided therein, and these oval sheaths, oval cores, and oval hollows have substantially the same major radius of each oval. A thermoadhesive conjugate fiber conjugated in the direction, wherein the conjugate fiber has an egg shape in which the ratio of the major axis to the minor axis in at least the cross section of the core is 1.05 to 1.50, and the hollow part (The center of the oval means the center of the major axis: the same applies hereinafter) is eccentric with respect to the core and / or the sheath so as to satisfy the following value. When the center of the part is eccentric, the ratio of the center distance of the two to the major radius of the core is 0.1 to 0.4.When the center of the hollow part and the center of the sheath are eccentric, the distance between the centers and the sheath When the ratio of the major radius of the part is 0.1 to 0.4, and the center of the hollow part and each center of the core part and the sheath part are eccentric, the hollow part and the core part Long radius ratio of the distance between the centers and the core, and at least one of the ratio of the long radius of the center-to-center distance and the sheath portion of the hollow portion and the sheath portion is 0.1 or more, and both
The gist is that the area ratio of the cross section of the hollow portion to the cross section of the core portion is 5 to 40% or less.
［作用］ 本発明の熱接着性複合繊維は、従来のシース・コア型
熱接着性複合繊維と同様に機械捲縮を与え、熱リラック
ス処理を施した後カーディングしウエブとしてから積層
し、加熱することにより不織布とされるが、この繊維は
横断面が卵形の非対称形状を有しているばかりでなく、
上記〜で規定する如く中空部、芯部および鞘部のい
ずれかが相互に偏心した構造を有しているので潜在捲縮
性が大きく、機械捲縮処理を加えることによって高度の
捲縮性を与えることができ、中空部の存在とも相まって
崇高性および弾性回復性を著しく高めることができる。[Function] The heat-adhesive conjugate fiber of the present invention is mechanically crimped similarly to the conventional sheath-core type heat-adhesive conjugate fiber, subjected to a heat relaxation treatment, carded, laminated as a web, and heated. It is made into a non-woven fabric by doing, but this fiber not only has an asymmetric shape with an oval cross section,
Since the hollow portion, the core portion and the sheath portion have a structure eccentric to each other as defined in the above, the potential crimpability is large, and a high crimpability is obtained by applying a mechanical crimping process. Can be given, and combined with the presence of the hollow portion, the sublimeness and the elastic recovery can be significantly enhanced.
本発明において芯部を構成する高融点の重合体として
は、ポリプロピレン，ポリエチレンテレフタレート等が
使用され、また鞘部を構成する低融点の重合体として
は、高密度・中密度・低密度の各ポリエチレン，ポリプ
ロピレン，エチレン・酢酸ビニル共重合体等が使用され
る。これら高融点の重合体と低融点の重合体は、不織布
とするときの熱接着性を確保するため融点差が20℃以上
であるものを選択して使用しなければならず、且つ鞘部
は低融点の重合体によって構成しなければならない。こ
の場合、用いられる重合体の融点差が20℃未満である
と、当該複合繊維を熱接着して不織布を製造する際に、
芯部まで軟化して変形し柔軟性や風合いが低下するばか
りでなく、中空部の一部が押しつぶされて崇高性や弾性
回復性も悪くなる。しかし融点差が20℃以上である重合
体を使用するとこうした問題を生じることがなく、柔軟
性、風合い、崇高性，弾性回復性のいずれにおいても優
秀な不織布を得ることができる。In the present invention, polypropylene, polyethylene terephthalate, etc. are used as the high melting point polymer constituting the core portion, and high density, medium density, and low density polyethylene are used as the low melting point polymer constituting the sheath portion. , Polypropylene, ethylene-vinyl acetate copolymer and the like are used. These high-melting polymer and low-melting polymer must be used by selecting those having a melting point difference of 20 ° C. or more in order to ensure thermal adhesion when forming a nonwoven fabric, and the sheath portion is It must be composed of a low melting polymer. In this case, when the difference in melting point of the polymer used is less than 20 ° C., when manufacturing the nonwoven fabric by heat bonding the composite fiber,
Not only does the core soften and deform to lower its flexibility and texture, but also a part of the hollow is crushed and its sublimeness and elastic recovery deteriorate. However, when a polymer having a melting point difference of 20 ° C. or more is used, such a problem does not occur, and a nonwoven fabric excellent in flexibility, hand, sublime, and elastic recovery can be obtained.
次に本発明で規定する複合繊維の横断面構造について
説明する。第１〜第３図は本発明に係る複合繊維の３種
の横断面構造例を示すものであり、図中１は鞘部,2は芯
部,3は中空部,P1,P2,P3は鞘部1,芯部2,中空部３の各中
心点、S1,S2,S3は鞘部1,芯部2,中空部３の各短半径,L1,
L2,L3は、鞘部1,芯部2,中空部３の各長半径を夫々示し
ている。Next, the cross-sectional structure of the conjugate fiber specified in the present invention will be described. FIGS. 1 to 3 show examples of three types of cross-sectional structures of the conjugate fiber according to the present invention, wherein 1 is a sheath, 2 is a core, 3 is a hollow, P 1 , P 2 , P 3 is the center point of the sheath 1, the core 2, and the hollow 3, and S 1 , S 2 , and S 3 are the short radii of the sheath 1, the core 2, and the hollow 3, L 1 ,
L 2 and L 3 indicate the major radii of the sheath 1, the core 2, and the hollow 3, respectively.
本発明繊維における第１の特徴は、少なくとも芯部２
が、その横断面において長半径L2と短半径S2の比（L2/L
2:以下卵形比ということがある）が1.05〜1.50である卵
形状を呈するところにある。即ち従来の真円形複合繊維
では、芯部内における中空部を偏心させ、芯部の肉厚を
一方側に片寄らせることによって潜在的捲縮能を高めた
ものが知られているが、本発明では、図示する様な卵形
形状とすることにより芯部における肉厚の片寄りを助長
し、且つ僅かに偏平した芯部のねじれ作用による立体捲
縮性も加わって崇高性および弾性回復性を一段を高める
ことができる。こうした効果は卵形比を1.05以上とする
ことによって有効に発揮されるが、この比が1.50を超え
て偏平なものとなると、複合溶融紡糸工程で中空部３が
芯部２外へ露出し易くなって、熱接着により鞘部１が溶
融して芯部２が露出したときに中空部３が大気に開放さ
れたり、あるいは圧縮力を受けたときに中空部３がつぶ
れ易くなり、中空部３に期待される弾性回復作用が著し
く低下してくる。The first feature of the fiber of the present invention is that at least the core 2
Is the ratio of the major radius L 2 to the minor radius S 2 (L 2 / L
2 : The egg shape ratio is hereinafter referred to as an egg shape ratio) of 1.05 to 1.50. That is, in the conventional true circular composite fiber, it is known that the hollow portion in the core portion is eccentric and the thickness of the core portion is deviated to one side to increase the potential crimpability, but in the present invention, The oval shape as shown in the figure promotes the uneven thickness of the core, and further enhances the sublimeness and elastic recovery by adding the three-dimensional crimpability due to the twisting action of the slightly flat core. Can be increased. Such an effect is effectively exerted by setting the egg shape ratio to 1.05 or more. However, when the ratio exceeds 1.50 and becomes flat, the hollow portion 3 is easily exposed to the outside of the core portion 2 in the composite melt spinning step. The hollow portion 3 is opened to the atmosphere when the sheath portion 1 is melted by thermal bonding and the core portion 2 is exposed, or the hollow portion 3 is easily crushed when subjected to compressive force, and the hollow portion 3 The elastic recovery effect expected from is significantly reduced.
尚卵形比による立体捲縮性助長作用は、不織布とした
状態で構成繊維の主体となる芯部２によって発揮され、
鞘部１は熱接着時に溶融しその形態を失ってしまうの
で、芯部のみを卵形化するだけでその目的は十分に達成
される。In addition, the three-dimensional crimping promoting action by the egg shape ratio is exerted by the core 2 which is a main component of the constituent fibers in a non-woven fabric state,
Since the sheath 1 is melted and loses its shape during thermal bonding, its purpose can be sufficiently achieved only by making the core portion oval.
次に該中空複合繊維断面における偏心構造について説
明する。この偏心構造は、複合繊維断面の肉厚を一方側
に片寄らせて潜在捲縮性の高めるうえで重要な構成要件
となるものであり、その態様としては次の３つが挙げら
れる。Next, the eccentric structure in the cross section of the hollow composite fiber will be described. This eccentric structure is an important component in increasing the potential crimpability by offsetting the thickness of the cross section of the composite fiber to one side, and the following three aspects are given.
第１図に示す如く、中空部３の中心P3と芯部２の中心
P2が偏心にしているときは、両者の中心間距離Waと、芯
部２の長半径L2の比（Wa/L2）が0.1〜0.4の範囲。As shown in FIG. 1, the center P 3 of the hollow portion 3 and the center of the core 2
When P 2 is the eccentricity, both the center-to-center distance Wa of the ratio of long radius L 2 of the core portion 2 (Wa / L 2) is 0.1 to 0.4 range.
第２図に示す如く、中空部３の中心P3と鞘部１の中心
P1が偏心しているときは、両者の中心間距離Wbと鞘部１
の長半径L1の比（Wb/L1）が0.1〜0.4の範囲。As shown in FIG. 2, the center P 3 of the hollow portion 3 and the center of the sheath portion 1
When P 1 is eccentric, between both center distance Wb and the sheath portion 1
Range length ratio of the radius L 1 (Wb / L 1) is 0.1 to 0.4 in.
第３図に示す如く、中空部３の中心P3と、芯部２およ
び鞘部１の各中心P2,P1がいずれも偏心しているとき
は、中空部３と芯部２の中心間距離Waと芯部２の長半径
L2の比（Wa/L2）、および中空部３と鞘部１の中心間距
離Wbと鞘部１の長半径L1の比（Wb/L1）のうち、少なく
とも一方が0.1以上であり且つ両方が0.4以下。As shown in FIG. 3, the center P 3 of the hollow portion 3, when each center P 2, P 1 of the core 2 and the sheath portion 1 is eccentric both the inter hollow portion 3 and the core 2 around Distance Wa and major radius of core 2
At least one of the ratio of L 2 (Wa / L 2 ) and the ratio of the center distance Wb between the hollow portion 3 and the sheath portion 1 to the major radius L 1 of the sheath portion 1 (Wb / L 1 ) is 0.1 or more. Yes and both are 0.4 or less.
上記〜は好ましい偏心の程度を規定するものであ
り、この様に複合繊維内において中空部３を偏心させる
ことによって繊維の肉厚に片寄りをもたせ、潜在捲縮性
を効果的に高めることができる。この場合（Wa/L2）比
や（Wb/L1）比が0.1未満である場合はこうした効果が有
効に発揮されず、一方0.4を超える場合は中空部３が芯
部２から露出したり、圧縮力を受けたときに中空部３が
つぶれ易くなり、中空部３を形成したことによる弾性回
復改善作用が発揮され難くなる。The above-mentioned stipulates a preferable degree of eccentricity. In this way, by eccentricizing the hollow portion 3 in the conjugate fiber, the thickness of the fiber is biased, and the potential crimpability can be effectively enhanced. it can. In this case, when the (Wa / L 2 ) ratio or the (Wb / L 1 ) ratio is less than 0.1, such an effect is not effectively exerted. On the other hand, when it exceeds 0.4, the hollow portion 3 is exposed from the core portion 2. In addition, the hollow portion 3 is easily crushed when subjected to a compressive force, and the effect of improving the elastic recovery by forming the hollow portion 3 is hardly exhibited.
即ちこの構成では、中空部３を一定偏心させることに
よる偏肉効果によって潜在捲縮性を高めるものであり、
従ってこうした効果は、中空部３を芯部および／または
鞘部１における卵形断面の小半径側（第１〜３図の左
側）へ偏心させることによって、より効果的に発揮され
る。That is, in this configuration, the potential crimping property is enhanced by the wall thickness unevenness effect caused by eccentricity of the hollow portion 3, and
Therefore, such an effect is exhibited more effectively by eccentricizing the hollow portion 3 toward the small radius side (the left side in FIGS. 1 to 3) of the oval cross section in the core portion and / or the sheath portion 1.
次に芯部２内に形成される中空部３は、前述の如く曲
げモーメントの向上により弾性回復力を高めるために設
けられるものであり、こうした効果を有効に発揮させる
ためには、該中空部３の横断面積の芯部の横断面積に対
する面積比率が５〜40％となる様に調整する必要があ
る。この面積比率が５％未満では弾性回復効果が十分に
改善されず、一方40％を超える場合は中空部３が芯部２
外へ露出したり、あるいは高荷重下で中空部３がつぶれ
易くなり、崇高性および弾性回復性が極端に悪くなる。Next, the hollow portion 3 formed in the core portion 2 is provided for enhancing the elastic recovery force by improving the bending moment as described above. In order to effectively exert such an effect, the hollow portion 3 is required. It is necessary to adjust so that the area ratio of the cross section of No. 3 to the cross section of the core is 5 to 40%. If the area ratio is less than 5%, the elastic recovery effect is not sufficiently improved, while if it exceeds 40%, the hollow portion 3 is
The hollow portion 3 is exposed to the outside or is easily crushed under a high load, and the sublimeness and the elastic recovery are extremely deteriorated.
［実施例］ 実施例 融点:264℃，極限粘度:0.63のポリエチレンテレフタ
レートを芯部材料とし、融点:132℃，メルトインデック
ス:25,密度:0.955の高密度ポリエチレンを鞘部材料とし
て使用し、夫々295℃および265℃で溶融押出しを行な
い、紡糸温度285℃、吐出量比1:1で連続紡糸し、芯部に
中空部を有する卵形断面の未延伸複合繊維を得た。この
とき、複合紡糸ノズルにおける芯部材料吐出口の位置お
よび中空部形成ダイの位置および大きさを微調整し、偏
心比、卵形比等の異なる幾つかの複合繊維を製造した。
得られた各未延伸糸を所定の条件で延伸した後、スタッ
ファボックスで機械捲縮を付与し、次いで100℃で10分
間リラックス処理した後、51mmの長さに切断しステーブ
ル繊維を得た。この繊維をカードウェッブとし、これを
無荷重下、140℃の熱風で１分間処理して不織布を得
た。[EXAMPLE] Example Using polyethylene terephthalate having a melting point of 264 ° C. and an intrinsic viscosity of 0.63 as a core material, and using a high-density polyethylene having a melting point of 132 ° C., a melt index of 25 and a density of 0.955 as a sheath material, Melt extrusion was performed at 295 ° C. and 265 ° C., and continuous spinning was performed at a spinning temperature of 285 ° C. and a discharge ratio of 1: 1 to obtain an undrawn conjugate fiber having an oval cross section having a hollow portion in the core. At this time, the position of the core material discharge port in the composite spinning nozzle and the position and size of the hollow forming die were finely adjusted to produce several composite fibers having different eccentricity ratios, oval ratios, and the like.
After stretching each of the obtained undrawn yarns under predetermined conditions, mechanical crimping is applied with a stuffer box, and then a relaxation treatment is performed at 100 ° C. for 10 minutes, and then cut into a length of 51 mm to obtain a stable fiber. Was. This fiber was used as a card web, which was treated with hot air at 140 ° C. for 1 minute under no load to obtain a nonwoven fabric.
製造条件、繊維物性および不織布物性を第１表に一括
して示す。尚表中、不織布の厚さＡは2g/cm2の荷重で測
定した値であり、厚さＢは2g/cm2の荷重を加え、５日間
放置した後の測定値である。Table 1 shows the manufacturing conditions, fiber properties and nonwoven fabric properties. In the table, the thickness A of the nonwoven fabric is a value measured under a load of 2 g / cm 2 , and the thickness B is a value measured after a load of 2 g / cm 2 is left for 5 days.
第１表より次の様に考えることができる。 From Table 1, the following can be considered.
実験No,1〜3:本発明の規定要件を充足する実施例であ
り、不織布の厚みは、低荷重で加圧したときはもとよ
り、高荷重で過圧したときでもかなり厚く、崇高性およ
び弾性回復性のいずれにおいても優れたものであること
が分かる。Experiment No, 1-3: This is an example that satisfies the specified requirements of the present invention, and the thickness of the nonwoven fabric is considerably thick even when overpressed with a high load, as well as when pressed with a low load, and has nobleness and elasticity. It turns out that it is excellent in all recoverability.
実験No.4,5:卵形比が規定範囲を外れる比較例であり、
卵形比が1.05以下だと芯部の肉厚の片寄りが十分でな
く、1.50を超えて偏平となった場合、中空部が芯部外へ
露出し崇高性及び弾性回復性は低下する。Experiment Nos. 4, 5: Comparative examples in which the oval ratio is out of the specified range,
When the egg-shaped ratio is 1.05 or less, the thickness of the core is not sufficiently shifted, and when the thickness exceeds 1.50, the hollow portion is exposed to the outside of the core, and the sublimeness and the elastic recovery are reduced.
実験No.6,7:中空部の偏心比が規定範囲を外れる比較例
であり、No.6は偏心比が小さいため崇高性が悪く、一方
No.7はWa/L2比が0.4を超えているため弾性回復性が劣
る。Experiment Nos. 6 and 7: Comparative examples in which the eccentricity ratio of the hollow part was out of the specified range.No. 6 was poor in sublimeness because the eccentricity ratio was small.
No. 7 is inferior in elastic recovery because the Wa / L 2 ratio exceeds 0.4.
実験No.8,9:中空率が規定範囲を外れる比較例であり、
中空率が５％以下だと十分な崇高性及び弾性回復性が得
られず、40％を超える場合、中空部が芯成分外へ露出し
た破裂糸が発生し、崇高性及び弾性回復性に劣る。Experiment Nos. 8 and 9: Comparative examples in which the hollow ratio is out of the specified range,
If the hollow ratio is 5% or less, sufficient nobleness and elastic recovery cannot be obtained, and if it exceeds 40%, a rupture thread in which the hollow portion is exposed outside the core component is generated, and the nobleness and elastic recovery are poor. .
実験No.10:芯部が真円状である比較例であり、崇高性お
よび弾性回復性のいずれにおいてもやや低い。Experiment No. 10: This is a comparative example in which the core is a perfect circle, and slightly lower in both sublime and elastic recovery.
実験No.11:中空部が形成されていない比較例であり、崇
高性および弾性回復性のいずれも劣悪である。Experiment No. 11: Comparative example in which no hollow portion was formed, and both sublimeness and elastic recovery were poor.
［発明の効果］ 本発明は以上の様に構成されており、複合繊維の卵形
比、中空部の偏心比および中空率を規定することによっ
て、崇高で弾性回復率の優れた複合繊維を得ることがで
きる。[Effects of the Invention] The present invention is configured as described above, and by defining the ovulation ratio, the eccentricity ratio of the hollow portion, and the hollow ratio of the conjugate fiber, a conjugate fiber excellent in elasticity and elastic recovery can be obtained. be able to.
第１〜３図は本発明に係る熱接着性複合繊維の横断面構
造を示す拡大説明図である。 １……鞘部、２……芯部 ３……中空部、P1,P2,P3……中心点 S1,S2,S3……短半径、L1,L2,L3……長半径1 to 3 are enlarged explanatory views showing the cross-sectional structure of the heat-adhesive conjugate fiber according to the present invention. 1 ... sheath part 2 ... core part 3 ... hollow part, P 1 , P 2 , P 3 ... central point S 1 , S 2 , S 3 ... short radius, L 1 , L 2 , L 3 …… Long radius
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｄ０４Ｈ 1/54 Ｄ０４Ｈ 1/54 Ｂ (58)調査した分野(Int.Cl.6，ＤＢ名) D01F 8/00 - 8/18 D01D 5/24 D01D 5/253 D01D 5/30 - 5/36──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 identification symbol FI // D04H 1/54 D04H 1/54 B (58) Investigated field (Int.Cl. 6 , DB name) D01F 8/00- 8/18 D01D 5/24 D01D 5/253 D01D 5/30-5/36
Claims (3)
形の中空部を有し、前記鞘部を構成する重合体よりも20
℃以上高い融点を有する重合体からなる横断面卵形の芯
部が内装されると共に、これら卵形鞘部、卵形芯部、卵
形中空部は、それら各卵形の長半径が略同一方向に向い
て複合された熱接着性複合繊維であって、該複合繊維
は、少なくとも芯部の横断面における長半径と短半径の
比が1.05〜1.50であると共に、前記中空部の中心（但
し、卵形の中心とは長径の中心を意味する：以下同じ）
と芯部の中心が偏心しており、且つ両者の中心間距離と
芯部の長半径の比が0.1〜0.4であり、中空部横断面積の
芯部横断面積に対する面積比率が５〜40％であることを
特徴とする熱接着性複合繊維。An oval-shaped hollow portion made of a polymer has an oval-shaped hollow portion, and the hollow portion has an oval shape.
A cross-section oval core made of a polymer having a high melting point of at least ℃ is provided therein, and these oval sheaths, oval cores, and oval hollows have substantially the same major radius of each oval. A heat-adhesive conjugate fiber conjugated in a direction, wherein the conjugate fiber has a ratio of a major radius to a minor radius of at least 1.05 to 1.50 in the cross section of the core, and the center of the hollow portion (however, , The center of the oval means the center of the major axis: the same applies hereinafter)
And the center of the core is eccentric, and the ratio of the center-to-center distance to the major radius of the core is 0.1 to 0.4, and the area ratio of the cross section of the hollow portion to the cross section of the core is 5 to 40%. A heat-adhesive conjugate fiber, characterized in that:
形の中空部を有し、前記鞘部を構成する重合体よりも20
℃以上高い融点を有する重合体からなる横断面卵形の芯
部が内装されると共に、これら卵形鞘部、卵形芯部、卵
形中空部は、それら各卵形の長半径が略同一方向に向い
て複合された熱接着性複合繊維であって、該複合繊維
は、少なくとも芯部の横断面における長半径と短半径の
比が1.05〜1.50であると共に、前記中空部の中心と鞘部
の中心が偏心しており、且つ両者の中心間距離と鞘部の
長半径の比が0.1〜0.4であり、中空部横断面積の芯部横
断面積に対する面積比率が５〜40％であることを特徴と
する熱接着性複合繊維。2. An oval-shaped hollow portion made of a polymer having an oval-shaped hollow portion in the inside thereof, wherein the hollow portion has an oval shape.
A cross-section oval core made of a polymer having a high melting point of at least ℃ is provided therein, and these oval sheaths, oval cores, and oval hollows have substantially the same major radius of each oval. A thermoadhesive conjugate fiber conjugated in a direction, wherein the conjugate fiber has a ratio of a major radius to a minor radius in a cross section of at least a core of 1.05 to 1.50, and a center and a sheath of the hollow portion. The center of the part is eccentric, and the ratio of the center-to-center distance between the two and the major radius of the sheath part is 0.1 to 0.4, and the area ratio of the hollow part cross-sectional area to the core part cross-sectional area is 5 to 40%. Characteristic thermo-adhesive conjugate fiber.
形の中空部を有し、前記鞘部を構成する重合体よりも20
℃以上高い融点を有する重合体からなる横断面卵形の芯
部が内装されると共に、これら卵形鞘部、卵形芯部、卵
形中空部は、それら各卵形の長半径が略同一方向に向い
て複合された熱接着性複合繊維であって、該複合繊維
は、少なくとも芯部の横断面における長半径と短半径の
比が1.05〜1.50である卵形状を呈すると共に、前記中空
部の中心と芯部及び鞘部の各中心が偏心しており、且つ
中空部と鞘部の中心間距離と芯部の長半径の比、および
中空部と鞘部の中心間距離と鞘部の長半径の比のうち少
なくとも一方が0.1以上で両方が0.4以上であり、中空部
横断面積の芯部横断面積に対する面積比率が５〜40％で
あることを特徴とする熱接着性複合繊維。3. An oval-shaped hollow portion made of a polymer having an oval-shaped hollow portion therein, which is 20 times less than the polymer constituting the sheath portion.
A cross-section oval core made of a polymer having a high melting point of at least ℃ is provided therein, and these oval sheaths, oval cores, and oval hollows have substantially the same major radius of each oval. A thermoadhesive conjugate fiber conjugated in the direction, wherein the conjugate fiber has an egg shape in which the ratio of the major axis to the minor axis in at least the cross section of the core is 1.05 to 1.50, and the hollow part And the center of the core and the center of the sheath are eccentric, and the ratio of the center-to-center distance between the hollow and the sheath and the major radius of the core, and the center-to-center distance between the hollow and the sheath and the length of the sheath A heat-adhesive conjugate fiber, characterized in that at least one of the ratios of the radii is at least 0.1 and both are at least 0.4, and the ratio of the cross-sectional area of the hollow part to the cross-sectional area of the core is 5 to 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1134038A JP2803165B2 (en) | 1989-05-25 | 1989-05-25 | Thermal adhesive composite fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1134038A JP2803165B2 (en) | 1989-05-25 | 1989-05-25 | Thermal adhesive composite fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03814A JPH03814A (en) | 1991-01-07 |
| JP2803165B2 true JP2803165B2 (en) | 1998-09-24 |
Family
ID=15118920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1134038A Expired - Fee Related JP2803165B2 (en) | 1989-05-25 | 1989-05-25 | Thermal adhesive composite fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2803165B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7238423B2 (en) | 2004-12-20 | 2007-07-03 | Kimberly-Clark Worldwide, Inc. | Multicomponent fiber including elastic elements |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017526834A (en) * | 2014-07-02 | 2017-09-14 | ヒュービス カンパニー リミテッド | Thermal adhesive composite fiber for nonwoven fabric binder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62299514A (en) * | 1986-06-10 | 1987-12-26 | Daiwa Spinning Co Ltd | Thermally bondable hollow conjugated yarn |
| JPH07100885B2 (en) * | 1987-01-31 | 1995-11-01 | 宇部日東化成株式会社 | Bulky composite fiber |
-
1989
- 1989-05-25 JP JP1134038A patent/JP2803165B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7238423B2 (en) | 2004-12-20 | 2007-07-03 | Kimberly-Clark Worldwide, Inc. | Multicomponent fiber including elastic elements |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03814A (en) | 1991-01-07 |
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