JP2835457B2 - Thermal adhesive composite fiber - Google Patents
Thermal adhesive composite fiberInfo
- Publication number
- JP2835457B2 JP2835457B2 JP1280461A JP28046189A JP2835457B2 JP 2835457 B2 JP2835457 B2 JP 2835457B2 JP 1280461 A JP1280461 A JP 1280461A JP 28046189 A JP28046189 A JP 28046189A JP 2835457 B2 JP2835457 B2 JP 2835457B2
- Authority
- JP
- Japan
- Prior art keywords
- component
- fiber
- styrene
- weight
- styrene content
- 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
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- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は熱接着性複合繊維に関する。さらに詳しく
は、ポリスチレンシートあるいはポリ塩化ビニルシート
に容易に熱接着が可能で、不織布の原料として有用な熱
接着性複合繊維に関する。Description: TECHNICAL FIELD The present invention relates to a heat-adhesive conjugate fiber. More specifically, the present invention relates to a heat-adhesive conjugate fiber which can be easily heat-bonded to a polystyrene sheet or a polyvinyl chloride sheet and is useful as a raw material for a nonwoven fabric.
布、木材、金属等の他の素材に容易に熱接着させるこ
との出来る不織布を得る方法として、特公昭55−27174
号公報には不飽和カルボン酸で変成したポリオレフィン
を接着成分とする複合繊維を用いることが提案されてお
り、ある程度の効果を上げている。しかし、この繊維で
はポリスチレンシートやポリ塩化ビニルシートに対する
接着力が弱く、より優れたものの開発が望まれていた。As a method for obtaining a nonwoven fabric which can be easily thermally bonded to other materials such as cloth, wood, metal, and the like, Japanese Patent Publication No. 55-27174
Japanese Patent Application Laid-Open Publication No. H11-163840 proposes to use a composite fiber containing a polyolefin modified with an unsaturated carboxylic acid as an adhesive component, and has achieved some effects. However, this fiber has a weak adhesive force to a polystyrene sheet or a polyvinyl chloride sheet, and the development of a superior fiber has been desired.
〔発明が解決しようとする課題〕 本発明はポリスチレンシートやポリ塩化ビニルシート
にも良い接着性を示す不織布の原料として有用な熱接着
性複合繊維を提供することを目的とする。[Problems to be Solved by the Invention] An object of the present invention is to provide a heat-adhesive conjugate fiber which is useful as a raw material of a nonwoven fabric exhibiting good adhesiveness to a polystyrene sheet or a polyvinyl chloride sheet.
本発明者らは、上記目的を達成するために鋭意研究の
結果、スチレンの含量が２〜20％（重量）のオレフィン
・スチレン共重合体から成る第１成分と、第１成分の融
点より30℃以上高い融点を有する繊維形成性重合体から
成る第２成分とを、第１成分が繊維表面の少なくとも一
部を長さ方向に連続して形成するように、並列型もしく
は鞘芯型に複合紡糸する、または、スチレンの含量が２
〜20％（重量）のオレフィン・スチレン共重合体とポリ
オレフィンとからなる組成物であって該組成物全体のス
チレン含量が２〜20％（重量）であるような組成から成
る第１成分と、第１成分の融点より30℃以上高い融点を
有する繊維形成性重合体から成る第２成分とを、第１成
分が繊維表面の少なくとも一部を長さ方向に連続して形
成するように、並列型もしくは鞘芯型に複合紡糸するこ
とにより所期の目的が達成されることを知り本発明を完
成するに至った。The present inventors have conducted intensive studies to achieve the above object, and as a result, have found that a first component comprising an olefin / styrene copolymer having a styrene content of 2 to 20% (by weight) and a melting point of the first component of 30% or less. A second component comprising a fiber-forming polymer having a melting point higher than 0 ° C. is compounded into a parallel type or a sheath-core type so that the first component forms at least a part of the fiber surface continuously in the length direction. Spinning or styrene content 2
A first component comprising a composition of about 20% (by weight) of an olefin / styrene copolymer and a polyolefin, wherein the total styrene content of the composition is 2% to 20% (by weight); A second component made of a fiber-forming polymer having a melting point higher than that of the first component by 30 ° C. or more is arranged in parallel so that the first component continuously forms at least a part of the fiber surface in the length direction. The present inventors have found that the intended purpose can be achieved by compound spinning into a mold or a sheath-core mold, and have completed the present invention.
本発明で使用するオレフィン・スチレン共重合体とし
ては、過酸化物等のラジカル発生剤の共存下にポリプロ
ピレンにスチレンをグラフト重合させたもの（特公昭47
−13617号公報）、あるいはチーグラー・ナッタ型触媒
やソルベイ型（TiCl3・Cp2TiMe2）触媒を用いてプロピ
レンとスチレンを共重合させたもの等を例示することが
出来る。このようなオレフィン・スチレン共重合体にお
いて、好ましいスチレン含量は２〜20％（重量）であ
り、さらに好ましくは５〜15％である。スチレン含量が
２％未満である繊維の他素材への接着力が不十分とな
り、20％を超すと可紡性が悪くなったり繊維柔軟性が不
足して、いずれも好ましくない。The olefin / styrene copolymer used in the present invention is obtained by graft-polymerizing styrene onto polypropylene in the presence of a radical generator such as a peroxide (Japanese Patent Publication No.
-13617 JP), or Ziegler-Natta type catalyst or Solvay type (TiCl 3 · Cp 2 TiMe 2 ) catalyst can be exemplified such as those obtained by copolymerizing propylene and styrene used. In such an olefin / styrene copolymer, the preferred styrene content is 2 to 20% (by weight), and more preferably 5 to 15%. If the styrene content is less than 2%, the adhesive strength of the fiber to other materials becomes insufficient, and if it exceeds 20%, the spinnability deteriorates and the fiber flexibility becomes insufficient.
本発明で第１成分中に混合して使用するポリオレフィ
ンとは、エチレン、プロピレン、ブテン−１等のα−オ
レフィンの単独重合体、あるいはこれらのα−オレフィ
ンを主成分とする共重合体をさし、ポリエチレン、ポリ
プロピレン、ポリブテン−１、エチレン・酢酸ビニル共
重合体等を例示することができる。In the present invention, the polyolefin used as a mixture in the first component refers to a homopolymer of an α-olefin such as ethylene, propylene, or butene-1, or a copolymer containing these α-olefins as a main component. However, polyethylene, polypropylene, polybutene-1, ethylene / vinyl acetate copolymer and the like can be exemplified.
本発明では上記オレフィン・スチレン共重合体10〜10
0％（重量）と上記ポリオレフィン90〜０％（重量）と
を、混合物中のスチレン含量が２〜20％（重量）となる
ように混合し、複合繊維の第１成分として用いる。第１
成分中のスチレン含量が２％未満であると繊維の他素材
への接着力が不十分となり、20％を超すと第１成分の可
紡性が悪くなったり繊維柔軟性が不足して、いずれも好
ましくない。In the present invention, the olefin / styrene copolymer 10 to 10
0% (by weight) and 90 to 0% (by weight) of the polyolefin are mixed so that the styrene content in the mixture becomes 2 to 20% (by weight), and used as the first component of the conjugate fiber. First
If the styrene content in the component is less than 2%, the adhesive strength of the fiber to other materials will be insufficient, and if it exceeds 20%, the spinnability of the first component will deteriorate and the fiber flexibility will be insufficient. Is also not preferred.
本発明で複合繊維の第２成分として用いる繊維形成性
重合体は、ポリオレフィン、ポリエステル、ポリアミド
等の熱可塑性重合体の中から、上記第１成分の融点より
30℃以上高い融点を有するものを適宜選択することがで
きる。第１成分と第２成分の融点の差が30℃以上あるこ
とにより、本発明の熱接着性複合繊維をこれら融点間の
温度で熱処理して第２成分により複合繊維の繊維形状を
保ちながら第１成分により繊維の接点が融着された不織
布とすることができる。融点の差が30℃未満であると熱
処理温度の範囲が狭くなるので好ましくない。The fiber-forming polymer used as the second component of the conjugate fiber in the present invention is selected from thermoplastic polymers such as polyolefins, polyesters, and polyamides based on the melting point of the first component.
Those having a melting point higher than 30 ° C. can be appropriately selected. When the difference between the melting points of the first component and the second component is 30 ° C. or more, the heat-adhesive conjugate fiber of the present invention is heat-treated at a temperature between these melting points and the second component maintains the fiber shape of the conjugate fiber while maintaining the fiber shape. A nonwoven fabric in which the fiber contacts are fused by one component can be obtained. If the difference in the melting points is less than 30 ° C., the range of the heat treatment temperature becomes narrow, which is not preferable.
第１成分が繊維表面の少なくとも一部を長さ方向に連
続して形成するように複合紡糸するには、両成分を並列
型に複合紡糸するか、あるいは第１成分を鞘成分とする
鞘芯型に複合紡糸すれば良い。両成分の複合比は30/70
〜70/30の範囲が好ましく、第１成分が30％未満である
と接着力が不十分となり、第２成分が30％未満であると
繊維強度が不十分となりいずれも好ましくない。In order to perform the composite spinning so that the first component continuously forms at least a part of the fiber surface in the length direction, either the two components are subjected to composite spinning in parallel or a sheath core having the first component as a sheath component. What is necessary is just to make a composite spinning in a mold. The composite ratio of both components is 30/70
When the first component is less than 30%, the adhesive strength becomes insufficient, and when the second component is less than 30%, the fiber strength becomes insufficient, and both are not preferred.
本発明を実施例および比較例によりさらに具体的に説
明する。なお、各例で用いられた試験方法を一括して以
下に示す。The present invention will be described more specifically with reference to Examples and Comparative Examples. The test methods used in each example are shown below collectively.
可紡性：口径0.6mm、350ホールの紡糸ノズルを用い、
押出量202g/minで１時間連続紡糸する間の糸切れ回数
が、１回以下のものを良と判定し○で表示し、２〜４回
のものを不良と判定し△で表示し、５回以上のものを不
可と判定し×で表示した。Spinnability: Using a spinning nozzle with a diameter of 0.6 mm and 350 holes,
If the number of yarn breaks during continuous spinning at an extrusion rate of 202 g / min for 1 hour is determined to be good for one or less times, it is judged as good. More than times were judged as unacceptable and indicated by x.
不織布破断強度：試料繊維を目付20g/m2のカードウエ
ブとし、145℃の熱風乾燥機で15分間熱処理して不織布
とする。この不織布より長さ200mm、幅50mmの試験片を
切り取り、引張試験機を用いて、試長100mm、引張速度1
00mm/minで破断強度を測定する。Non-woven fabric breaking strength: A sample fiber is made into a card web having a basis weight of 20 g / m 2 and heat-treated with a hot air dryer at 145 ° C. for 15 minutes to form a non-woven fabric. A test piece having a length of 200 mm and a width of 50 mm was cut out from the nonwoven fabric, and a test length of 100 mm and a tensile speed of 1 were measured using a tensile tester.
Measure the breaking strength at 00 mm / min.
積層体破断強力：試料繊維を目付20g/m2のカードウエ
ブとし、厚さ2mmの発泡ポリスチレンペーパー（または
軟質塩ビシート）の上に載せ、2g/cm2の重しをかけて14
5℃で５分間加熱圧着する。得られた積層物より長さ200
mm、幅50mmの試験片を切り取り、引張試験機を用いて、
試長100mm、引張速度100mm/minで破断強度を測定する。Laminate breaking strength: A sample fiber is made into a card web having a basis weight of 20 g / m 2 , placed on a 2 mm-thick expanded polystyrene paper (or a soft PVC sheet), and weighed 2 g / cm 2.
Thermocompression bonding at 5 ° C for 5 minutes. Length 200 from the obtained laminate
mm, cut a test piece of width 50mm, using a tensile tester,
The breaking strength is measured at a test length of 100 mm and a tensile speed of 100 mm / min.
剥離強度：試料繊維を目付20g/m2のカードウエブと
し、厚さ2mmの発泡ポリスチレンペーパー（または軟質
塩ビシート）の上に載せ、2g/cm2の重しをかけて145℃
で５分間加熱圧着する。得られた積層物より長さ200m
m、幅50mmの試験片を切り取り、長辺の方向にはしから1
00mmを手で剥離させ、引張試験機を用いて試長50mm、引
張速度50mm/minで剥離強度（g/5cm）を測定する。Peel strength: The sample fiber is made into a card web with a basis weight of 20 g / m 2 , placed on a 2 mm-thick expanded polystyrene paper (or a soft PVC sheet), and weighed at 2 g / cm 2 at 145 ° C.
For 5 minutes. 200m longer than the obtained laminate
m, 50mm wide test piece, cut from long side
The peel strength (g / 5 cm) is measured at a test length of 50 mm and a tensile speed of 50 mm / min using a tensile tester.
実施例１〜８、比較例１〜４ スチレン・エチレン共重合体（密度0.945g/cm3、MFR
18,スチレン含量９％、mp92℃、St・PEと略記）、スチ
レン・プロピレン共重合体（密度0.930g/cm3、MFR 15,
スチレン含量９％、mp146℃、St・PPと略記）、ポリエ
チレン（MFR 15,mp132℃、PEと略記）、ポリプロピレン
（MFR 12,mp163℃、PPと略記）およびポリエステル（mp
255℃、PETと略記）を用い、第１表に示した組み合わせ
による複合繊維を紡糸した。紡糸条件は、紡糸温度（第
１成分／第２成分＝200/280℃）、巻取速度649m、延伸
倍率3.8。Examples 1 to 8, Comparative Examples 1 to 4 Styrene / ethylene copolymer (density 0.945 g / cm 3 , MFR
18, Styrene content 9%, mp 92 ° C, abbreviated as St · PE), styrene / propylene copolymer (density 0.930 g / cm 3 , MFR 15,
Styrene content 9%, mp 146 ° C, abbreviated as St • PP), polyethylene (MFR 15, mp132 ° C, abbreviated as PE), polypropylene (MFR 12, mp163 ° C, abbreviated as PP), and polyester (mp
Composite fibers were spun by the combinations shown in Table 1 using 255 ° C, abbreviated as PET). The spinning conditions were a spinning temperature (first component / second component = 200/280 ° C.), a winding speed of 649 m, and a draw ratio of 3.8.
得られた複合繊維（単糸繊度３デニール）を繊維長51
mmに切断したスフを、カード機で目付20g/m2のウエブと
し、145℃の熱風乾燥機で５分間熱処理して不織布を得
た。The obtained conjugate fiber (single yarn fineness: 3 denier) was treated with a fiber length of 51.
The web cut into mm was converted into a web having a basis weight of 20 g / m 2 using a card machine, and heat-treated with a hot air dryer at 145 ° C. for 5 minutes to obtain a nonwoven fabric.
上記のウエブ（目付20g/m2）と、発泡ポリスチレンシ
ート（厚さ2mm、みかけ密度0.09g/cm3、破断強度7.0kg/
5cm）または軟質塩ビシート（厚さ0.05mm、破断速度6.8
kg/5cm）とを積層し、所定の熱圧着処理をして積層体と
した。The above web (basis weight 20 g / m 2 ) and expanded polystyrene sheet (thickness 2 mm, apparent density 0.09 g / cm 3 , breaking strength 7.0 kg /
5cm) or soft PVC sheet (thickness 0.05mm, breaking rate 6.8)
kg / 5 cm) and subjected to a predetermined thermocompression treatment to form a laminate.
それぞれの不織布および積層体の引張強度、ならびに
積層体の剥離強度を第１表に示した。Table 1 shows the tensile strength of each nonwoven fabric and laminate, and the peel strength of the laminate.
実施例９、比較例５ 第１成分にスチレン含量13％のスチレン・エチレン共
重合体（実施例９）またはスチレン含量23％のスチレン
・エチレン共重合体（比較例５）を用いたほかは実施例
１と同様にして、不織布より積層体を得た。これらの試
験結果を第１表に併せ示した。Example 9 and Comparative Example 5 Except that the styrene-ethylene copolymer having a styrene content of 13% (Example 9) or the styrene-ethylene copolymer having a styrene content of 23% (Comparative Example 5) was used as the first component. In the same manner as in Example 1, a laminate was obtained from the nonwoven fabric. These test results are shown in Table 1.
比較例６〜12 第１成分として、スチレン・エチレン共重合体に代え
て、ポリエチレン（MFR 15、mp132℃）、ポリスチレン
（MFR 24）、またはこれらの混合物を用いたほかは実施
例１と同様にして、不織布および積層体をえた。これら
の試験結果を第１表に併せ示した。Comparative Examples 6 to 12 In the same manner as in Example 1 except that polyethylene (MFR 15, mp 132 ° C.), polystyrene (MFR 24), or a mixture thereof was used as the first component instead of the styrene / ethylene copolymer. Thus, a nonwoven fabric and a laminate were obtained. These test results are shown in Table 1.
参考例 第１成分として無水マレイン酸をグラフトさせた高密
度ポリエチレン（無水マレイン酸含量0.53g/kg、MFR 1
5）を用いた他は実施例１と同様にして複合繊維を得、
不織布とし、発泡ポリスチレンシート及び軟質塩ビシー
トとの接着性を試験した。試験結果を第１表に併せ示し
た。Reference Example High-density polyethylene grafted with maleic anhydride as the first component (maleic anhydride content 0.53 g / kg, MFR 1
Except for using 5), a composite fiber was obtained in the same manner as in Example 1,
The nonwoven fabric was used to test the adhesiveness with the expanded polystyrene sheet and the soft PVC sheet. The test results are shown in Table 1.
〔発明の効果〕 表に示されたデータから以下のことが明らかになる。 [Effects of the Invention] The following becomes clear from the data shown in the table.
スチレン・オレフィン共重合体またはスチレン・オレ
フィン共重合体とポリオレフィンとの混合物で全体のス
チレン含量が２〜20％（重量）である第１成分を用いた
複合繊維は、可紡性、不織布強度が良く、しかもポリス
チレンシート等に対する接着力が強く、これらシート材
の風合改質に好適である。The composite fiber using the first component having a total styrene content of 2 to 20% (by weight) in a styrene-olefin copolymer or a mixture of a styrene-olefin copolymer and a polyolefin has spinnability and nonwoven fabric strength. It has good adhesion to polystyrene sheets and the like, and is suitable for improving the feel of these sheet materials.
第１成分中のスチレン含量が２％未満のもの（比較例
３、４）は接着性が劣り、スチレン含量が20％を超える
もの（比較例５）は可紡性が悪い。また、混合紡糸しな
かったり（比較例２）、複合比（第２成分の量）がちい
さいもの（比較例１）は可紡性が劣る。Those having a styrene content of less than 2% in the first component (Comparative Examples 3 and 4) have poor adhesion, and those having a styrene content of more than 20% (Comparative Example 5) have poor spinnability. In addition, the spinning properties are poor if the spinning is not performed (Comparative Example 2) or the composite ratio (the amount of the second component) is small (Comparative Example 1).
スチレン・オレフィン共重合体に代えて、ポリスチレ
ン単独又はポリスチレンとポリエチレンの混合物を用い
たもの（比較例８〜12）は、可紡性及び接着力がいずれ
も劣る。Those using polystyrene alone or a mixture of polystyrene and polyethylene instead of the styrene-olefin copolymer (Comparative Examples 8 to 12) are inferior in both spinnability and adhesive strength.
第１成分にポリエチレン（比較例６、７）あるいはマ
レイン酸変成ポリエチレン（参考例）を用いた従来技術
のものは、いずれも接着力が弱い。Conventional technology using polyethylene (Comparative Examples 6 and 7) or modified maleic polyethylene (Reference Example) as the first component has low adhesive strength.
Claims (2)
フィン・スチレン共重合体から成る第１成分と、第１成
分の融点より30℃以上高い融点を有する繊維形成性重合
体から成る第２成分とを、第１成分が繊維表面の少なく
とも一部を長さ方向に連続して形成するように、並列型
もしくは鞘芯型に配した熱接着性複合繊維。1. A first component comprising an olefin / styrene copolymer having a styrene content of 2 to 20% (by weight), and a fiber-forming polymer having a melting point higher than that of the first component by 30 ° C. or more. A heat-adhesive conjugate fiber in which the second component is arranged in a side-by-side or sheath-core configuration such that the first component continuously forms at least a part of the fiber surface in the length direction.
フィン・スチレン共重合体とポリオレフィンとからなる
組成物であって該組成物全体のスチレン含量が２〜20％
（重量）であるような組成から成る第１成分と、第１成
分の融点より30℃以上高い融点を有する繊維形成性重合
体から成る第２成分とを、第１成分が繊維表面の少なく
とも一部を長さ方向に連続して形成するように、並列型
もしくは鞘芯型に配した熱接着性複合繊維。2. A composition comprising an olefin / styrene copolymer having a styrene content of 2 to 20% (by weight) and a polyolefin, wherein the total styrene content of the composition is 2 to 20%.
(Weight) and a second component comprising a fiber-forming polymer having a melting point higher than the melting point of the first component by 30 ° C. or more. A heat-adhesive conjugate fiber arranged in a side-by-side or sheath-core type so that portions are continuously formed in the length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280461A JP2835457B2 (en) | 1989-10-27 | 1989-10-27 | Thermal adhesive composite fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280461A JP2835457B2 (en) | 1989-10-27 | 1989-10-27 | Thermal adhesive composite fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03146711A JPH03146711A (en) | 1991-06-21 |
| JP2835457B2 true JP2835457B2 (en) | 1998-12-14 |
Family
ID=17625387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1280461A Expired - Fee Related JP2835457B2 (en) | 1989-10-27 | 1989-10-27 | Thermal adhesive composite fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2835457B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2590795B2 (en) * | 1991-04-16 | 1997-03-12 | 日立電線株式会社 | Waterproof sheet with nonwoven fabric and method for producing the same |
| CA2322569A1 (en) * | 1998-03-11 | 1999-09-16 | The Dow Chemical Company | Fibers made from alpha-olefin/vinyl or vinylidene aromatic and/or hindered cycloaliphatic or aliphatic vinyl or vinylidene interpolymers |
| IT1394085B1 (en) * | 2009-04-09 | 2012-05-25 | Plastitex Societa Per Azioni Abbreviata In Plastitex S P A | WIRE OF PLASTIC MATERIAL PARTICULARLY FOR TECHNICAL FABRICS, AND TECHNICAL FABRIC MADE OF SUCH WIRE |
-
1989
- 1989-10-27 JP JP1280461A patent/JP2835457B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03146711A (en) | 1991-06-21 |
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