JP2018193626A - Method for manufacturing compound type monofilament yarn - Google Patents
Method for manufacturing compound type monofilament yarn Download PDFInfo
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- JP2018193626A JP2018193626A JP2017096085A JP2017096085A JP2018193626A JP 2018193626 A JP2018193626 A JP 2018193626A JP 2017096085 A JP2017096085 A JP 2017096085A JP 2017096085 A JP2017096085 A JP 2017096085A JP 2018193626 A JP2018193626 A JP 2018193626A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 150000001875 compounds Chemical class 0.000 title abstract 7
- 239000000306 component Substances 0.000 claims abstract description 45
- 239000008358 core component Substances 0.000 claims abstract description 34
- 239000004744 fabric Substances 0.000 claims abstract description 26
- 229920006121 Polyxylylene adipamide Polymers 0.000 claims abstract description 19
- 229920000098 polyolefin Polymers 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 5
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims description 59
- 238000002074 melt spinning Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000002759 woven fabric Substances 0.000 claims description 5
- 229920001684 low density polyethylene Polymers 0.000 abstract description 4
- 239000004702 low-density polyethylene Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000009987 spinning Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract 2
- 229920003023 plastic Polymers 0.000 abstract 2
- 239000000835 fiber Substances 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 16
- 239000011347 resin Substances 0.000 description 16
- 229920005989 resin Polymers 0.000 description 16
- 239000000155 melt Substances 0.000 description 14
- 230000008018 melting Effects 0.000 description 13
- -1 polyethylene Polymers 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 238000009940 knitting Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
本発明は、複合型モノフィラメント糸の製造方法に関し、特に樹脂製容器の壁に接着させて容器を補強するための補強用布帛を得るのに用いる複合型モノフィラメント糸の製造方法に関するものである。 The present invention relates to a method for producing a composite monofilament yarn, and more particularly to a method for producing a composite monofilament yarn used for obtaining a reinforcing fabric for reinforcing a container by bonding it to a wall of a resin container.
従来より、樹脂製容器の壁の外側又は内側に布帛を接着させたり、壁中に布帛を挿入したりして、容器を補強することが行われている。そして、補強用布帛としては、織物、編物又は多軸シート等が用いられている。かかる補強用布帛を構成する糸として、芯鞘複合型モノフィラメント糸が用いられることがある。芯鞘複合型モノフィラメント糸とは、芯成分が高融点重合体よりなり、鞘成分が低融点重合体よりなり、比較的高繊度のものである。そして、鞘成分のみを軟化又は溶融させて、樹脂製容器の壁に融着することができるので、補強用布帛の構成糸として用いられている。 Conventionally, a fabric is reinforced by adhering a fabric to the outside or inside of a wall of a resin container or inserting a fabric into the wall. As the reinforcing fabric, a woven fabric, a knitted fabric, a multiaxial sheet or the like is used. A core-sheath composite monofilament yarn may be used as a yarn constituting such a reinforcing fabric. The core-sheath composite monofilament yarn has a core component made of a high-melting polymer and a sheath component made of a low-melting polymer, and has a relatively high fineness. Since only the sheath component can be softened or melted and fused to the wall of the resin container, it is used as a constituent yarn of a reinforcing fabric.
芯鞘複合型モノフィラメント糸の芯成分としては、ポリアミド、ポリエステル、ポリオレフィン、ポリウレタン、ポリカーボネート、アクリル、ポリフェニレンエーテル及びポリビニルアルコール等の高融点重合体が用いられており、鞘成分としては、ポリエチレン、ポリプロピレン及びエチレン−プロピレン系共重合体等の低融点重合体が用いられている（特許文献１、請求項１〜３）。すなわち、芯成分として高融点重合体であれば種々の重合体を用いることができ、鞘成分として樹脂となじみが良く接着性にすぐれたオレフィン系重合体を用いることが知られている。 High-melting polymers such as polyamide, polyester, polyolefin, polyurethane, polycarbonate, acrylic, polyphenylene ether and polyvinyl alcohol are used as the core component of the core-sheath composite monofilament yarn, and the sheath component includes polyethylene, polypropylene and A low melting point polymer such as an ethylene-propylene copolymer is used (Patent Document 1, Claims 1 to 3). That is, it is known that various polymers can be used as a core component as long as it is a high melting point polymer, and that an olefin polymer having good adhesion to a resin and excellent adhesiveness is used as a sheath component.
かかる芯鞘複合型モノフィラメント糸は、その強度が高いことが求められる。特に、樹脂製容器の壁に接着させた後にフィラメント形態を維持して残存している芯成分には、高い強度が求められる。本発明者は、芯成分として高強度及び高剛性を持つポリアミドＭＸＤ６を採用することを試みた。しかしながら、ポリアミドＭＸＤ６は曳糸性に劣るため、軸方向に繊度の均一な芯鞘複合型モノフィラメント糸を得ることが困難であった。また、芯鞘複合型モノフィラメント糸の強度を向上させるため、延伸処理を施すと、芯成分と鞘成分とが剥離するということがあり、芯鞘複合型モノフィラメント糸を用いて製織又は製編等をする際に、鞘成分が脱離したり切断されたりして、布帛中に鞘成分を均一に存在させにくくなるという欠点があった。また、芯成分と鞘成分が剥離した芯鞘複合型モノフィラメント糸を容器等の壁に接着しても、強固な接着を実現できないという欠点もあった。 Such a core-sheath composite monofilament yarn is required to have high strength. In particular, high strength is required for the core component that remains in the filament form after being adhered to the wall of the resin container. The inventor tried to adopt polyamide MXD6 having high strength and high rigidity as a core component. However, since polyamide MXD6 is inferior in spinnability, it has been difficult to obtain a core-sheath composite monofilament yarn having a uniform fineness in the axial direction. Moreover, in order to improve the strength of the core-sheath composite monofilament yarn, when the stretching process is performed, the core component and the sheath component may be peeled off, and weaving or knitting using the core-sheath composite monofilament yarn may occur. In doing so, there is a drawback that the sheath component is detached or cut and it is difficult for the sheath component to be uniformly present in the fabric. In addition, there is a drawback that even if the core-sheath composite monofilament yarn from which the core component and the sheath component are separated is bonded to the wall of a container or the like, strong bonding cannot be realized.
本発明の課題は、芯鞘複合型モノフィラメント糸の芯成分としてポリアミドＭＸＤ６を採用しながら、軸方向に繊度が均一で、かつ、芯成分と鞘成分とが剥離しにくい複合型モノフィラメント糸を製造する方法を提供することにある。 An object of the present invention is to produce a composite monofilament yarn having a uniform fineness in the axial direction and having a core component and a sheath component that are difficult to separate while adopting polyamide MXD6 as a core component of the core / sheath composite monofilament yarn. It is to provide a method.
本発明は、鞘成分として、ポリアミドＭＸＤ６に曳糸性を与える特定の重合体を使用することにより、上記課題を解決したものである。すなわち、本発明は、芯成分をポリアミドＭＸＤ６とし、鞘成分をマレイン酸変性ポリオレフィンとして、複合溶融紡糸法によってモノフィラメント糸を得た後、該モノフィラメント糸を冷却した後に、加熱下で延伸処理を施すことを特徴とする複合型モノフィラメント糸の製造方法に関するものである。 This invention solves the said subject by using the specific polymer which gives a spinnability to polyamide MXD6 as a sheath component. That is, in the present invention, the core component is polyamide MXD6, the sheath component is maleic acid-modified polyolefin, a monofilament yarn is obtained by a composite melt spinning method, the monofilament yarn is cooled, and then subjected to a stretching treatment under heating. The present invention relates to a method for producing a composite monofilament yarn characterized by
まず、芯成分となるポリアミドＭＸＤ６を準備する。ポリアミドＭＸＤ６とは、メタキシレンジアミンとアジピン酸とを重縮合反応して得られるポリアミドのことである。ポリアミドＭＸＤ６の融点は、約２４０℃である。芯成分をポリアミドＭＸＤ６とすることにより、高強度及び高剛性の芯成分となる。なお、ポリアミドＭＸＤ６のみを芯成分として用いてもよいし、他の重合体と混合して芯成分としてもよい。一方、鞘成分となるマレイン酸変性ポリオレフィンを準備する。マレイン酸変性ポリオレフィンとは、ポリオレフィンの側鎖にマレイン酸（無水マレイン酸を含む）を付加させたものである。マレイン酸変性ポリオレフィンとしては、マレイン酸変性ポリエチレンやマレイン酸変性ポリプロピレンを用いることができる。マレイン酸変性ポリオレフィンの融点は、種類によって異なるが、概ね１１０〜１６０℃であり、ポリアミドＭＸＤ６の融点よりも低融点となっている。鞘成分をマレイン酸変性ポリオレフィンとすることにより、芯成分であるポリアミドＭＸＤ６の曳糸性を良好にすることができる。この理由は定かではないが、ポリアミドＭＸＤ６がマレイン酸変性ポリオレフィンと強固に密着し、マレイン酸変性ポリオレフィンの良好な曳糸性に助けられて、ポリアミドＭＸＤ６の曳糸性も良好になると考えられる。 First, polyamide MXD6 which becomes a core component is prepared. Polyamide MXD6 is a polyamide obtained by polycondensation reaction of metaxylenediamine and adipic acid. The melting point of polyamide MXD6 is about 240 ° C. By using polyamide MXD6 as the core component, the core component has high strength and high rigidity. In addition, only polyamide MXD6 may be used as the core component, or may be mixed with another polymer as the core component. On the other hand, a maleic acid-modified polyolefin to be a sheath component is prepared. The maleic acid-modified polyolefin is obtained by adding maleic acid (including maleic anhydride) to the side chain of the polyolefin. As the maleic acid-modified polyolefin, maleic acid-modified polyethylene or maleic acid-modified polypropylene can be used. The melting point of maleic acid-modified polyolefin varies depending on the type, but is generally 110 to 160 ° C., which is lower than the melting point of polyamide MXD6. By using maleic acid-modified polyolefin as the sheath component, the spinnability of polyamide MXD6 as the core component can be improved. The reason for this is not clear, but it is considered that the polyamide MXD6 adheres firmly to the maleic acid-modified polyolefin and is helped by the good spinnability of the maleic acid-modified polyolefin, so that the polyamide MXD6 also has good spinnability.
鞘成分であるマレイン酸変性ポリオレフィンに、変性されていないポリオレフィンを添加してもよい。かかるポリオレフィンとしては、高密度ポリエチレン、低密度ポリエチレン又はポリプロピレンを用いることができる。変性されていないポリオレフィンの添加量は、マレイン酸変性ポリオレフィン１００重量部に対して５０〜１５０質量部程度である。変性されていないポリオレフィンを添加する理由は、鞘成分のメルトフローレートを調整して、その曳糸性と流動性とを向上させ、複合溶融紡糸しやすくするためである。 An unmodified polyolefin may be added to the maleic acid-modified polyolefin which is a sheath component. As such polyolefin, high density polyethylene, low density polyethylene or polypropylene can be used. The addition amount of the unmodified polyolefin is about 50 to 150 parts by mass with respect to 100 parts by weight of the maleic acid-modified polyolefin. The reason for adding the unmodified polyolefin is to adjust the melt flow rate of the sheath component to improve its spinnability and fluidity and to facilitate complex melt spinning.
芯成分と鞘成分とを、複合溶融紡糸孔を複数備えた紡糸装置に、溶融状態で導入し、加熱された複合溶融紡糸孔より芯成分と鞘成分を吐出する方法（すなわち、複合溶融紡糸法）によって、芯鞘複合型モノフィラメント糸を得る。芯成分と鞘成分とを複合溶融紡糸孔より連続して吐出し、芯成分を鞘成分によって良好に被覆するには、芯成分と鞘成分のメルトフローレートを一定の範囲に調整するのが好ましい。具体的には、芯成分のメルトフローレートを５〜４０ｇ／１０分の範囲内にし、鞘成分のメルトフローレートを１５〜６５ｇ／１０分の範囲内にするのがよい。特に、この範囲内で、鞘成分のメルトフローレートを芯成分のメルトフローレートよりも高くし、鞘成分の流動性を高めておくのが好ましい。なお、このメルトフローレートは、複合溶融紡糸する際の温度に近似する温度である２８０℃で、荷重２．１６ｋｇで測定したものである。 A method in which a core component and a sheath component are introduced into a spinning apparatus having a plurality of composite melt spinning holes in a molten state, and the core component and sheath component are discharged from the heated composite melt spinning holes (that is, a composite melt spinning method) ) To obtain a core-sheath composite monofilament yarn. In order to continuously discharge the core component and the sheath component from the composite melt spinning hole and to satisfactorily cover the core component with the sheath component, it is preferable to adjust the melt flow rate of the core component and the sheath component within a certain range. . Specifically, the melt flow rate of the core component is preferably in the range of 5 to 40 g / 10 minutes, and the melt flow rate of the sheath component is preferably in the range of 15 to 65 g / 10 minutes. In particular, within this range, it is preferable that the melt flow rate of the sheath component is higher than the melt flow rate of the core component to improve the fluidity of the sheath component. The melt flow rate was measured at 280 ° C., which is a temperature approximate to the temperature at the time of composite melt spinning, with a load of 2.16 kg.
得られたモノフィラメント糸は冷却された後に、モノフィラメント糸を加熱下で延伸して、複合型モノフィラメント糸を得る。冷却方法及び加熱方法は従来公知の方法で行われる。たとえば、低温の温水中にモノフィラメント糸を浸漬することにより、モノフィラメント糸を冷却してもよい。また、高温の温水中にモノフィラメント糸を浸漬することにより、モノフィラメント糸を加熱してもよい。さらに、高温の熱風中にモノフィラメント糸を導入することにより、モノフィラメント糸を加熱してもよいし、高温の過熱水蒸気をモノフィラメント糸に吹き付けて行ってもよい。低温の温度は６０℃以下程度でよく、室温であってもよい。また、高温の温度は８０℃以上程度であり、２００℃以上程度でもよい。延伸は、二つの一対のローラー間で行われる。たとえば、一対の第一ローラー間にモノフィラメント糸を導入した後、このモノフィラメント糸を第一ローラーよりも回転速度の速い加熱された一対の第二ローラー間に導入することにより行われる。第一ローラーと第二ローラーに回転速度差を設けることにより、任意の倍率で延伸することができる。たとえば、第一ローラーの回転速度をＸｒｐｍの場合、第二ローラーの回転速度を２Ｘｒｐｍにすると、２倍の延伸倍率で延伸されることになる。本発明では、延伸倍率は、３〜７倍であるのが好ましく、特に４〜６倍であるのが最も好ましい。 After the obtained monofilament yarn is cooled, the monofilament yarn is drawn under heating to obtain a composite monofilament yarn. A cooling method and a heating method are performed by a conventionally known method. For example, the monofilament yarn may be cooled by immersing the monofilament yarn in low-temperature warm water. Alternatively, the monofilament yarn may be heated by immersing the monofilament yarn in high-temperature hot water. Furthermore, the monofilament yarn may be heated by introducing the monofilament yarn into hot hot air, or high temperature superheated steam may be sprayed onto the monofilament yarn. The low temperature may be about 60 ° C. or less, and may be room temperature. The high temperature is about 80 ° C. or higher, and may be about 200 ° C. or higher. Stretching is performed between two pairs of rollers. For example, after introducing a monofilament yarn between a pair of first rollers, the monofilament yarn is introduced between a pair of heated second rollers having a rotational speed higher than that of the first roller. By providing a difference in rotational speed between the first roller and the second roller, stretching can be performed at an arbitrary magnification. For example, when the rotation speed of the first roller is X rpm, when the rotation speed of the second roller is 2 X rpm, the film is stretched at a draw ratio of 2 times. In the present invention, the draw ratio is preferably 3 to 7 times, and most preferably 4 to 6 times.
本発明によると、上記した延伸工程を経ても、芯成分と鞘成分とがよく密着しており、芯成分と鞘成分の剥離の少ない芯鞘複合型モノフィラメント糸が得られる。複合型モノフィラメント糸の繊度は比較的高繊度であり、１００〜２０００デシテックス程度である。複合型モノフィラメント糸の表面には油剤をを付与してもよい。油剤を付与することにより、巻き取り性、巻き戻し性及び製織性又は製編製等を向上させることができる。この複合型モノフィラメント糸を用いて布帛を得る。具体的には、複合型モノフィラメント糸を経糸及び緯糸に用い、製織して織物を得る。織物の組織は、平織組織、綾織組織又は朱子織組織等の従来公知の組織を採用すればよい。また、複合型モノフィラメント糸を用いて緯編又は経編で製編して、編物を得る。編物の組織も、平編組織、パール編組織又はトリコット編組織等の従来公知の組織を採用すればよい。さらに、複合型モノフィラメント糸を経方向、斜め方向又は緯方向に並べた層を積層し、各層間を接着してなる多軸シートを得る。これらの布帛を構成する複合型モノフィラメントの鞘成分のみを軟化又は溶融させて、各糸間を融着させて、目づれが生じにくいようにしておいてもよい。。 According to the present invention, a core-sheath composite monofilament yarn can be obtained in which the core component and the sheath component are in close contact with each other and the core component and the sheath component are less peeled even after the above-described drawing step. The fineness of the composite monofilament yarn is relatively high and is about 100 to 2000 dtex. An oil agent may be applied to the surface of the composite monofilament yarn. By applying the oil agent, the winding property, rewinding property, weaving property, knitting, and the like can be improved. A fabric is obtained using the composite monofilament yarn. Specifically, a composite monofilament yarn is used for warp and weft and woven to obtain a woven fabric. A conventionally known structure such as a plain weave structure, a twill weave structure or a satin weave structure may be adopted as the structure of the woven fabric. Further, the composite monofilament yarn is used for weft knitting or warp knitting to obtain a knitted fabric. As the knitted fabric structure, a conventionally known structure such as a flat knitted structure, a pearl knitted structure or a tricot knitted structure may be adopted. Furthermore, a multilayered sheet obtained by laminating layers in which the composite monofilament yarns are arranged in the warp direction, the oblique direction or the weft direction and bonding the respective layers is obtained. Only the sheath component of the composite monofilament that constitutes these fabrics may be softened or melted so that the yarns are fused together so that the yarns are less likely to be caught. .
以上の方法で得られた布帛は、各種材料の補強用布帛として用いられる。たとえば、樹脂製容器の壁の表面に張設して、加熱加圧し、複合型モノフィラメント糸の鞘成分のみを軟化又は溶融させて接着して、樹脂製容器の壁を補強することができる。 The fabric obtained by the above method is used as a reinforcing fabric for various materials. For example, it is possible to reinforce the wall of the resin container by stretching it on the surface of the wall of the resin container, heating and pressurizing, and softening or melting only the sheath component of the composite monofilament yarn.
本発明に係る方法を採用すると、ポリアミドＭＸＤ６に良好な曳糸性が与えられるため、軸方向に繊度の均一な芯鞘複合型モノフィラメント糸を得ることができるという効果を奏する。また、芯成分からの鞘成分の剥離の少ない芯鞘複合型モノフィラメント糸を得ることができるという効果を奏する。したがって、軸方向に繊度が均一で、かつ、芯成分と鞘成分との剥離が少ない複合型モノフィラメント糸が得られるという効果を奏する。また、芯成分と鞘成分との剥離が少ない複合型モノフィラメント糸を用いて布帛を得ると、この布帛中には鞘成分が均一に存在する。そして、この布帛中の鞘成分のみを軟化又は溶融させて、樹脂製容器の壁等に接着させた場合、均一で強固な接着が実現でき、樹脂製容器の壁等の補強効果に優れるという効果を奏する。 When the method according to the present invention is employed, the polyamide MXD6 is provided with good spinnability, so that it is possible to obtain a core-sheath composite monofilament yarn having a uniform fineness in the axial direction. In addition, there is an effect that a core-sheath composite monofilament yarn with little peeling of the sheath component from the core component can be obtained. Therefore, it is possible to obtain a composite monofilament yarn having a uniform fineness in the axial direction and having little separation between the core component and the sheath component. In addition, when a fabric is obtained using a composite monofilament yarn with little peeling between the core component and the sheath component, the sheath component exists uniformly in the fabric. Then, when only the sheath component in the fabric is softened or melted and adhered to the wall or the like of the resin container, uniform and strong adhesion can be realized and the effect of reinforcing the wall of the resin container or the like is excellent. Play.
実施例１
芯成分として、融点が２４０℃でメルトフローレートが５．４ｇ／１０分のポリアミドＭＸＤ６（三菱瓦斯化学社製 ＭＸナイロン ６１２１）を準備した。鞘成分として、以下の混合樹脂を準備した。すなわち、融点が１３１℃でメルトフローレートが６２．０ｇ／１０分の高密度ポリエチレン（日本ポリエチレン社製 ＨＪ４９０）５０重量部と、融点が１２２℃でメルトフローレートが３１．７ｇ／１０分のマレイン酸変性ポリエチレン（日本ポリエチレン社製 アドテックス ＤＵ６６００）５０重量部を均一に混合した混合樹脂を準備した。そして、複合溶融紡糸装置に、孔径２．０ｍｍの芯鞘型複合紡糸口金を装着し、２８０℃に加熱した芯成分及び鞘成分を、芯成分：鞘成分＝２：１（重量比）となるように両者を供給し、モノフィラメント糸を紡糸した。その後、紡糸したモノフィラメント糸を６０℃の温水中に浸漬して冷却した。続いて、９５℃の温水中に導入し、この温水中で３倍の延伸倍率で延伸処理を施した。その後、このモノフィラメント糸を２１０℃の乾熱雰囲気中に導入し、１．３倍の延伸倍率で延伸処理を施し、総延伸倍率が４倍となるように延伸して、繊度が３０７５デシテックスの複合型モノフィラメント糸を得た。
Example 1
As a core component, polyamide MXD6 (MX nylon 6121 manufactured by Mitsubishi Gas Chemical Co., Inc.) having a melting point of 240 ° C. and a melt flow rate of 5.4 g / 10 min was prepared. The following mixed resin was prepared as a sheath component. That is, 50 parts by weight of high-density polyethylene (HJ490 manufactured by Nippon Polyethylene Co., Ltd.) having a melting point of 131 ° C. and a melt flow rate of 62.0 g / 10 min, and a maleate having a melting point of 122 ° C. and a melt flow rate of 31.7 g / 10 min. A mixed resin in which 50 parts by weight of acid-modified polyethylene (Adtex DU6600 manufactured by Nippon Polyethylene Co., Ltd.) was uniformly mixed was prepared. Then, a core-sheath type composite spinneret with a hole diameter of 2.0 mm is attached to the composite melt spinning apparatus, and the core component and the sheath component heated to 280 ° C. are core component: sheath component = 2: 1 (weight ratio). Thus, both were supplied and monofilament yarn was spun. Thereafter, the spun monofilament yarn was immersed in warm water at 60 ° C. and cooled. Then, it introduce | transduced into 95 degreeC warm water, and performed the extending | stretching process by the draw ratio 3 times in this warm water. Thereafter, this monofilament yarn was introduced into a dry heat atmosphere at 210 ° C., subjected to a stretching treatment at a stretching ratio of 1.3 times, and stretched so that the total stretching ratio was 4 times, and a composite having a fineness of 3075 dtex. Type monofilament yarn was obtained.
実施例２
鞘成分として使用する混合樹脂を、融点が１２７℃でメルトフローレートが１５．１５／１０分の低密度ポリエチレン（プライムポリマー社製 エヴォリュー ＳＰ４０３０）５０重量部と、融点が１２２℃でメルトフローレートが３１．７ｇ／１０分のマレイン酸変性ポリエチレン（日本ポリエチレン社製 アドテックス ＤＵ６６００）５０重量部を均一に混合した混合樹脂に変更する他は、実施例１と同一の条件で、繊度が３０７１デシテックスの複合型モノフィラメント糸を得た。
Example 2
The mixed resin used as the sheath component is 50 parts by weight of low density polyethylene (Evolue SP4030 manufactured by Prime Polymer Co., Ltd.) having a melting point of 127 ° C. and a melt flow rate of 15.15 / 10 minutes, a melting point of 122 ° C. and a melt flow rate of 31.7 g / 10 min maleic acid-modified polyethylene (Adtex DU6600, manufactured by Nippon Polyethylene Co., Ltd.), except that the mixed resin was uniformly mixed, and under the same conditions as in Example 1, the fineness was 3071 dtex. A composite monofilament yarn was obtained.
比較例１
鞘成分として使用する混合樹脂に代えて、融点が１３１℃でメルトフローレートが６２．０ｇ／１０分の高密度ポリエチレン（日本ポリエチレン社製 ＨＪ４９０）１００重量部を用いる他は、実施例１と同一の方法で複合型モノフィラメント糸を得た。
Comparative Example 1
The same as Example 1 except that 100 parts by weight of high density polyethylene (HJ490 manufactured by Nippon Polyethylene Co., Ltd.) having a melting point of 131 ° C. and a melt flow rate of 62.0 g / 10 min was used instead of the mixed resin used as the sheath component. Thus, a composite type monofilament yarn was obtained.
比較例２
鞘成分として使用する混合樹脂に代えて、融点が１２７℃でメルトフローレートが１５．１５／１０分の低密度ポリエチレン（プライムポリマー社製 エヴォリュー ＳＰ４０３０）１００重量部を用いる他は、実施例２と同一の方法で複合型モノフィラメント糸を得た。
Comparative Example 2
Example 2 was used except that instead of the mixed resin used as the sheath component, 100 parts by weight of low density polyethylene (Evolue SP4030 manufactured by Prime Polymer Co., Ltd.) having a melting point of 127 ° C. and a melt flow rate of 15.15 / 10 minutes was used. A composite monofilament yarn was obtained by the same method.
実施例１、２、比較例１及び２で得られた複合型モノフィラメント糸の端部を側面及び端面から観察した。その結果、実施例１及び２で得られた複合型モノフィラメント糸は、芯と鞘とが密着しているのに対して、比較例１及び２で得られた複合型モノフィラメント糸は、芯と鞘とが密着しておらず、剥離しやすいものであることが分かる。特に、比較例１及び２で得られた複合型モノフィラメント糸の端部では、鞘が収縮して芯が露出していることが分かる。 The ends of the composite monofilament yarns obtained in Examples 1 and 2 and Comparative Examples 1 and 2 were observed from the side and end surfaces. As a result, the composite monofilament yarns obtained in Examples 1 and 2 were in close contact with the core and the sheath, whereas the composite monofilament yarns obtained in Comparative Examples 1 and 2 were the core and sheath. And are not in close contact with each other and can be easily peeled off. In particular, it can be seen that at the ends of the composite monofilament yarns obtained in Comparative Examples 1 and 2, the sheath contracts and the core is exposed.
実施例１及び２で得られた複合型モノフィラメント糸を経糸及び緯糸に用いて平織織物を製織し、これを樹脂製容器の壁に加熱加圧して接着させたところ、織物は強固に樹脂製容器の壁に接着し、補強用布帛として好適に使用しうるものであった。 A plain woven fabric was woven using the composite monofilament yarns obtained in Examples 1 and 2 as warps and wefts, and this was heated and pressed against the wall of a resin container. It can be suitably used as a reinforcing fabric.
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| JP2015175077A (en) * | 2014-03-14 | 2015-10-05 | ユニチカ株式会社 | monofilament |
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| JPH0192415A (en) * | 1987-10-02 | 1989-04-11 | Unitika Ltd | Heat-bondable fiber and nonwoven fabric thereof |
| JP2003193332A (en) * | 2001-10-17 | 2003-07-09 | Bridgestone Corp | Sheath-core conjugate fiber and elastomer/fiber composite material |
| JP2009179914A (en) * | 2008-01-31 | 2009-08-13 | Mitsubishi Rayon Co Ltd | Polypropylene fiber and textile product |
| WO2011158906A1 (en) * | 2010-06-16 | 2011-12-22 | 積水化学工業株式会社 | Polyolefin-based resin composition |
| JP2015175077A (en) * | 2014-03-14 | 2015-10-05 | ユニチカ株式会社 | monofilament |
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