JP2007092233A - Monofilament for screen gauze - Google Patents
Monofilament for screen gauze Download PDFInfo
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- JP2007092233A JP2007092233A JP2005283961A JP2005283961A JP2007092233A JP 2007092233 A JP2007092233 A JP 2007092233A JP 2005283961 A JP2005283961 A JP 2005283961A JP 2005283961 A JP2005283961 A JP 2005283961A JP 2007092233 A JP2007092233 A JP 2007092233A
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Abstract
Description
本発明は、印刷スクリーン紗用芯鞘複合モノフィラメントに関する。更に詳しくは、電子回路印刷等の高精密プリント印刷分野において感光、露光工程でのハレーション防止に優れ、寸法安定性も兼ね備えたスクリーン紗用芯鞘複合モノフィラメントに関する。 The present invention relates to a core-sheath composite monofilament for printing screens. More specifically, the present invention relates to a core-sheath composite monofilament for screen wrinkles that is excellent in preventing halation in the photosensitive and exposure processes in the field of high-precision printing such as electronic circuit printing and also has dimensional stability.
最近の電子回路印刷等の高精密プリント分野では、より精密な印刷精度に対する要求がますます厳しくなってきている。通常、スクリーン紗の製版は、モノフィラメントをメッシュ織物とした後、フレーム枠に紗張りし、感光樹脂を塗布、乾燥させその面にポジフィルムを密着させ、これを紫外線で露光すると露光部は光化学反応を起こし、水不溶性に変化するが、これを水洗すると、ポジフィルムの不透明部分に相当する未反応の感光膜が洗い流され、スクリーンが現像し、その織目からインクが押し流されて印刷されるといった工程をたどる。 In recent high-precision printing fields such as electronic circuit printing, the demand for more precise printing accuracy has become increasingly severe. Usually, screen stencil making is made of monofilament made into a mesh fabric, then laid on a frame frame, coated with a photosensitive resin, dried, and a positive film is adhered to the surface. However, when this is washed with water, the unreacted photosensitive film corresponding to the opaque portion of the positive film is washed away, the screen is developed, and the ink is washed away from the texture to be printed. Follow the process.
スクリーン紗製造工程では、紫外線露光工程の制御は非常に重要で、露光量が少ないと感光膜の硬化が不十分で現像時に脱落するといった問題や、逆に多すぎると現像時に感光樹脂の抜けが悪くなり、織目が埋まるといった問題があった。また、紫外線がメッシュ織物表面で乱反射し、露光不要な部分まで感光させて硬化する、いわゆるハレーションが発生する問題があり、印刷設計や精度が大きく狂ってしまう。ハレーションを防止する為に、紫外線の影響を少なくするため、メッシュ織物に染色を施す方法があるが、性能は充分ではない。 In the screen wrinkle manufacturing process, it is very important to control the UV exposure process. If the exposure amount is small, the photosensitive film will not be cured sufficiently and will fall off during development. There was a problem of getting worse and filling the texture. Further, there is a problem that so-called halation occurs, in which ultraviolet rays are irregularly reflected on the surface of the mesh fabric and are exposed to a portion that does not require exposure to be hardened. In order to prevent halation, there is a method of dyeing the mesh fabric in order to reduce the influence of ultraviolet rays, but the performance is not sufficient.
これらの問題を解決するべく、鞘成分にポリアミドすなわちナイロン6、ナイロン66等を使用し、その鞘成分に黄色顔料を混入したモノフィラメントからなる印捺スクリーン用メッシュ織物が提案されている(特許文献1参照)が、メッシュ織物を構成するモノフィラメントの鞘成分がポリアミドの場合、モノフィラメントが持つ破断強度が低く、寸法安定性に欠けるといった問題や製織時に目ずれが生じ、寸法安定性が悪くなり印刷精度が低下するといった問題があった。また、芯成分にポリエステル、鞘成分にポリアミドを使用した場合には複合界面での剥離現象が発生し、メッシュ織物の品位が低下するといった問題もあった。 In order to solve these problems, there has been proposed a mesh fabric for a printing screen comprising a monofilament in which polyamide, that is, nylon 6, nylon 66 or the like is used as a sheath component and a yellow pigment is mixed in the sheath component (Patent Document 1). However, when the sheath component of the monofilament composing the mesh fabric is polyamide, the monofilament has low breaking strength and lacks dimensional stability, and misalignment occurs during weaving, resulting in poor dimensional stability and printing accuracy. There was a problem of a drop In addition, when polyester is used as the core component and polyamide is used as the sheath component, there is a problem that a peeling phenomenon occurs at the composite interface, and the quality of the mesh fabric is lowered.
一方、優れた寸法安定性を持ち、紫外線吸収剤としてベンゾトリアゾール系化合物やベンゾフェノン系化合物を使用した、紫外線反射が少ないスクリーン用モノフィラメントが提案されている(特許文献2参照)が、高精度印刷用メッシュ織物に加工した場合に感光・露光の際のハレーション防止効果は得られるものの高精密プリント印刷分野における性能は十分ではなく、スクリーン上に焼き付けた印刷パターンには、ぼけ・かぶりなどが生じるといった問題があった。
本発明は上記問題を解決し、印刷スクリーン用メッシュ織物に加工する際、感光、露光工程でのハレーション防止に優れ、かつ寸法安定性が良好で、印刷精度に優れたスクリーン紗用芯鞘複合モノフィラメントを提供することにある。 The present invention solves the above problems, and when processing into a mesh fabric for printing screens, it is excellent in preventing halation in the photosensitive and exposure processes, has good dimensional stability, and has excellent printing accuracy. Is to provide.
前記課題を解決するため、本発明は、以下の構成を採用する。すなわち、
(1)複合形態が芯鞘構造を形成するスクリーン紗用モノフィラメントにおいて、波長300〜500nmの光に対する反射率が5.0%以下であり、かつ初期弾性率が、100〜125cN/dtexであることを特徴とするスクリーン紗用芯鞘複合モノフィラメント。
(2)芯鞘いずれの成分もポリエステルからなり、鞘成分に有機系顔料を含むことを特徴とする前記(1)に記載のスクリーン紗用芯鞘複合モノフィラメント。
(3)有機系顔料がアンスラキノンであることを特徴とする前記(1)または(2)に記載のスクリーン紗用芯鞘複合モノフィラメント。
(4)芯鞘成分の複合比率が容積比率で70:30〜90:10からなり、破断強度が5.9〜7.0cN/dtexであることを特徴とする前記(1)〜(3)のいずれかに記載のスクリーン紗用芯鞘複合モノフィラメント。
In order to solve the above problems, the present invention employs the following configuration. That is,
(1) In a screen filament monofilament in which the composite form forms a core-sheath structure, the reflectance with respect to light having a wavelength of 300 to 500 nm is 5.0% or less, and the initial elastic modulus is 100 to 125 cN / dtex. A core-sheath composite monofilament for screen cocoons.
(2) The core-sheath composite monofilament for screen wrinkles according to the above (1), wherein any component of the core-sheath is made of polyester and the sheath component contains an organic pigment.
(3) The core-sheath composite monofilament for screen wrinkles according to (1) or (2), wherein the organic pigment is anthraquinone.
(4) The composite ratio of the core-sheath component is 70:30 to 90:10 in volume ratio, and the breaking strength is 5.9 to 7.0 cN / dtex, (1) to (3) A core-sheath composite monofilament for a screen cage according to any one of the above.
本発明におけるスクリーン紗用芯鞘複合モノフィラメントは、高精度印刷プリント分野において、感光、露光工程でのハレーション防止に優れ、かつ寸法安定性が良好であり印刷精度に優れた特性を持つことから高精度プリント印刷スクリーン紗用原糸として適した素材となる。 The core-sheath composite monofilament for screen cocoons in the present invention is highly accurate in the field of high-precision printing and printing because it is excellent in preventing halation in the photosensitive and exposure processes, has good dimensional stability, and has excellent printing accuracy. It is a suitable material for printing printing screen silk thread.
以下、本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明の芯鞘複合モノフィラメントは、写真製版法で300〜500nmにピークを有する波長の光に対する反射率が5.0%以下である。反射率が10%を超えると高精度印刷プリント分野において十分なハレーション防止効果が得られないことから、より好ましくは反射率が限りなく0%に近いほうが良い。 The core-sheath composite monofilament of the present invention has a reflectance of 5.0% or less with respect to light having a wavelength having a peak at 300 to 500 nm by a photolithography method. If the reflectance exceeds 10%, a sufficient anti-halation effect cannot be obtained in the high-precision print printing field. Therefore, the reflectance is preferably as close to 0% as possible.
本発明の芯鞘複合モノフィラメントは、高精密プリント印刷に適した高強力モノフィラメントであり、製織性の低下や紗伸びなどの発生を抑え、高い寸法安定性を維持するには、初期弾性率は100〜125cN/dtexである。ここでいう初期弾性率とは、初期長20cmのモノフィラメントを歪速度100%/分にて引っ張り試験を行い、図1のSS曲線を得た後に、第一降伏点Y1までの直線関係にあたる点Aと点Bの傾きから、以下の方法で計算したものである。
初期弾性率(cN/dtex)=
(点Aの強度−点Bの強度)/{(点Aの伸度−点Bの伸度)/100}
初期弾性率が100cN/dtex未満であると、必要十分な寸法安定性が得られず、印刷精度が低下する。また、初期弾性率が125cN/dtexを超えるとメッシュ織物製造における整経・製織工程で削れやスカムが生じ易くなり、メッシュ織物の品位が低下する。より好ましくは100〜120cN/dtexである。
The core-sheath composite monofilament of the present invention is a high-strength monofilament suitable for high-precision print printing, and the initial elastic modulus is 100 in order to suppress the occurrence of deterioration in weaving property and wrinkle elongation and maintain high dimensional stability. ~ 125 cN / dtex. Here, the initial elastic modulus is a point A corresponding to a linear relationship up to the first yield point Y1 after performing a tensile test on a monofilament having an initial length of 20 cm at a strain rate of 100% / min to obtain the SS curve of FIG. And the slope of the point B are calculated by the following method.
Initial elastic modulus (cN / dtex) =
(Intensity at point A−Intensity at point B) / {(Elongation at point A−Elongation at point B) / 100}
When the initial elastic modulus is less than 100 cN / dtex, necessary and sufficient dimensional stability cannot be obtained, and printing accuracy is lowered. On the other hand, if the initial elastic modulus exceeds 125 cN / dtex, scraping and scum are likely to occur in the warping and weaving process in the manufacture of the mesh fabric, and the quality of the mesh fabric is lowered. More preferably, it is 100-120 cN / dtex.
本発明で使用する芯鞘複合モノフィラメントの芯、および鞘成分は、いずれの成分もポリエステルからなるものであることが好ましい。該芯、および鞘成分を構成するポリエステルは、モノフィラメントを製織後、加工段階での熱セットにおける寸法安定性を確実なものにするために、一般的に用いられるエチレングリコールをテレフタル酸で重合し、添加剤として酸化チタンを0.1〜0.5重量%添加したポリエチレンテレフタレートを使用するのが好ましく、なかでも酸化チタン添加量が0.2〜0.4重量%のエチレンテレフタレートが好ましい。 The core and sheath component of the core-sheath composite monofilament used in the present invention is preferably made of polyester. The polyester constituting the core and the sheath component is obtained by polymerizing ethylene glycol, which is generally used, with terephthalic acid in order to ensure dimensional stability in heat setting in the processing stage after weaving the monofilament, It is preferable to use polyethylene terephthalate to which 0.1 to 0.5% by weight of titanium oxide is added as an additive, and ethylene terephthalate having a titanium oxide addition amount of 0.2 to 0.4% by weight is particularly preferable.
本発明の芯鞘複合モノフィラメントに、ハレーション防止効果を付与するためには芯鞘複合を形成する鞘成分のポリエステルに、有機系顔料を混入して原液着色することが好ましい。この方法は、複合芯鞘モノフィラメントの鞘成分に顔料を混入するだけでメッシュ織物の製造後に染色する必要がなく、安定したハレーション防止効果を得ることができる。また、繊維表面に異物が付着したり、メッシュ織物に熱収縮が生じたりすることなく、スクリーン版を製造できるため、高密度で微細なパターンをも精度良くスクリーン版に製造できるものとなる。 In order to impart an antihalation effect to the core-sheath composite monofilament of the present invention, it is preferable that the sheath component polyester forming the core-sheath composite is mixed with an organic pigment and colored with a stock solution. In this method, it is not necessary to dye after the production of the mesh fabric only by mixing the pigment into the sheath component of the composite core-sheath monofilament, and a stable antihalation effect can be obtained. Further, since the screen plate can be produced without any foreign matter adhering to the fiber surface or heat shrinkage of the mesh fabric, a high-density and fine pattern can be produced with high accuracy on the screen plate.
本発明で用いる有機系顔料は、波長300〜500nmの光に対する反射率が低く、出来るだけ均一に原液着色し、かつモノフィラメントを加工する際の工程を削れなく通過させるうえでは、黄色顔料、例えばColor Index Y193、化審法化学物質番号(5)−1259に示されるアンスラキノンイエロー等が好ましい。また、芯鞘複合を形成する鞘成分のポリエステルに混入する顔料濃度は、溶融紡糸する際の適当な粘性保持や、顔料を均一に混練するうえで4〜15%が好ましい。 The organic pigment used in the present invention has a low reflectance with respect to light having a wavelength of 300 to 500 nm, is colored as a uniform solution as much as possible, and passes through a monofilament processing step without being cut off, for example, a yellow pigment such as Color. Index Y193, anthraquinone yellow shown in Chemical Substances Control Law Chemical Number (5) -1259, and the like are preferable. Moreover, the pigment concentration mixed in the sheath component polyester forming the core / sheath composite is preferably 4 to 15% in order to maintain appropriate viscosity during melt spinning and to uniformly knead the pigment.
本発明において、鞘成分のポリエステルに顔料を混入する方法は特に規定されるものではないが、ブレンダーを用いてペレットの状態でベースポリマーと混練した後、溶融する方法や、もしくは鞘成分のポリエステルと顔料をそれぞれ溶融させ、溶融ポリマー状態で混練機器を通過させて混練する方法が均一な混練性を得るために好ましい。 In the present invention, the method of mixing the pigment into the polyester of the sheath component is not particularly specified, but the method of kneading with the base polymer in a pellet state using a blender and then melting, or the polyester of the sheath component In order to obtain uniform kneading properties, it is preferable to melt the pigments and to knead them by passing them through a kneading machine in the molten polymer state.
本発明において、芯鞘複合モノフィラメントの芯鞘構造を形成する芯成分と鞘成分の比率は容量比率で70:30〜90:10が好ましく、特に75:25〜85:15であるのが良い。鞘成分が少なすぎると、鞘の被膜が薄くなりすぎて、紡糸時に厚み斑が生じ易くなったり、製織時、紗張り時または、印刷時に外部応力を受けて被膜が破れ易くなったりすることがある。逆に芯成分が少なすぎると、これらの欠点は生じないが、引張応力に対する抵抗が小となり、スクリーンとしての寸法安定性に欠けることとなる。 In the present invention, the ratio of the core component to the sheath component forming the core / sheath structure of the core / sheath composite monofilament is preferably 70:30 to 90:10, and particularly preferably 75:25 to 85:15. If the sheath component is too small, the sheath coating becomes too thin, and thickness unevenness is likely to occur during spinning, or the coating may be easily broken due to external stress during weaving, tensioning, or printing. is there. On the other hand, if the core component is too small, these defects do not occur, but the resistance to tensile stress becomes small and the dimensional stability as a screen is lacking.
本発明における芯鞘複合モノフィラメントの形態は、繊維横断面の全周にわたって鞘成分が連続で存在し、芯成分が露出していないことが重要である。繊維の横断面の形状は、通常の丸断面形状でよく、また芯成分の配置および形状は特に限定されず、単芯、多芯、異型断面、同心、偏心いずれも可能である。しかし、寸法安定性を保証するためには、応力が分散しない丸断面の同心円単芯配置又は丸断面の多芯配置が好ましい。 In the form of the core-sheath composite monofilament in the present invention, it is important that the sheath component is continuously present over the entire circumference of the fiber cross section and the core component is not exposed. The cross-sectional shape of the fiber may be a normal round cross-sectional shape, and the arrangement and shape of the core component are not particularly limited, and any of single-core, multi-core, atypical cross-section, concentricity, and eccentricity is possible. However, in order to guarantee dimensional stability, a concentric single-core arrangement with a round cross-section in which stress is not dispersed or a multi-core arrangement with a round cross-section is preferable.
本発明の芯鞘複合モノフィラメントは、高精密プリント印刷に適した高強力モノフィラメントであり、製織性の低下や紗伸びなどの発生を抑え、高い寸法安定性を維持するには破断強度が5.9〜7.0cN/dtexのものが好ましい。 The core-sheath composite monofilament of the present invention is a high-strength monofilament suitable for high-precision print printing, and has a breaking strength of 5.9 in order to suppress the occurrence of deterioration in weaving properties, wrinkle elongation, etc., and maintain high dimensional stability. Those of ˜7.0 cN / dtex are preferred.
本発明の芯鞘複合モノフィラメントの繊度は8.0〜18dtexの範囲であれば、高精度印刷プリント分野において、寸法安定性や印刷精度に優れた本発明の効果を最大限得られる。 If the fineness of the core-sheath composite monofilament of the present invention is in the range of 8.0 to 18 dtex, the effects of the present invention excellent in dimensional stability and printing accuracy can be obtained to the maximum in the high-precision printing field.
本発明における芯鞘複合モノフィラメントは、2種以上の溶融部を有する紡糸機において、290℃で芯鞘複合を形成するようなオリフィス孔を有する紡糸部材で溶融紡糸し、冷却固化させた後、給油させ、引取速度1000m/分で一旦巻き取る。巻き取った未延伸糸をホットローラー延伸機にて、予備加熱温度90℃、延伸倍率4.0倍で延伸した後、温度130℃で熱セットして900m/分巻き取ることで得られる。 The core-sheath composite monofilament in the present invention is melt-spun with a spinning member having an orifice hole that forms a core-sheath composite at 290 ° C. in a spinning machine having two or more melting parts, cooled and solidified, and then lubricated. And take up once at a take-up speed of 1000 m / min. It is obtained by drawing the wound undrawn yarn with a hot roller drawing machine at a preheating temperature of 90 ° C. and a draw ratio of 4.0 times, and then heat setting at a temperature of 130 ° C. and winding up 900 m / min.
以下実施例より本発明をさらに具体的に説明するが、本発明はこれらに何等限定されるものではない。なお、実施例中の各特性値は以下の方法を用いて測定した。
1.反射率(%)
芯鞘複合モノフィラメントから得られた経・緯密度350メッシュ(350本/2.54cm)のメッシュ織物について、JISZ8722(色の測定方法−反射及び透過物体色)記載の方法で反射率(%)を測定した。
2.初期弾性率(cN/dtex)
オリエンテックス社製テンシロン引張試験機を用い、初期試料長20cm、歪速度100%/分、初荷重1/30cN/dtexとして破断するまで引っ張り試験を実施し、初期弾性率は上述した方法で算出した。
3.破断強度(cN/dtex)
オリエンテックス社製テンシロン引張試験機を用い、初期試料長20cm、歪速度100%/分、初荷重1/30cN/dtexとして破断するまで引っ張り試験を実施し、破断したときの強度を求めた。
4.ハレーション防止効果
芯鞘複合モノフィラメントから得られた経・緯密度350メッシュ(350本/2.54cm)のメッシュ織物に微細パターンを焼き付けて電子顕微鏡で観察した。
◎…ハレーション防止効果大。
○…ハレーション防止効果有り。
△…ハレーション防止効果少ない。
×…ハレーション発生。
6.メッシュ織物への微細パターン焼き付け状態
芯鞘複合モノフィラメントから得られた経・緯密度350メッシュ(350本/2.54cm)のメッシュ織物に微細パターンを焼き付けて電子顕微鏡で観察した。
◎…接着力が良く、パターンがより鮮明である。
○…接着力が良く、パターンのエッジも良い。
△…接着力に劣り、パターンのエッジが悪い。
×…接着力がなく、パターンを形成しない。
Hereinafter, the present invention will be described more specifically by way of examples. However, the present invention is not limited to these examples. In addition, each characteristic value in an Example was measured using the following method.
1. Reflectance (%)
For mesh fabrics of warp and weft density 350 mesh (350 pieces / 2.54 cm) obtained from core-sheath composite monofilament, reflectivity (%) was measured by the method described in JISZ8722 (color measurement method-reflection and transmission object color). It was measured.
2. Initial elastic modulus (cN / dtex)
Using a Tensilon tensile tester manufactured by Orientex Corp., a tensile test was conducted until the specimen broke with an initial sample length of 20 cm, a strain rate of 100% / min, and an initial load of 1/30 cN / dtex, and the initial elastic modulus was calculated by the method described above. .
3. Breaking strength (cN / dtex)
Using a Tensilon tensile tester manufactured by Orientex Co., Ltd., a tensile test was performed until the sample broke with an initial sample length of 20 cm, a strain rate of 100% / min, and an initial load of 1/30 cN / dtex, and the strength at the time of breaking was obtained.
4). Anti-Halation Effect A fine pattern was baked on a mesh fabric having a warp and latitude density of 350 mesh (350 pieces / 2.54 cm) obtained from a core-sheath composite monofilament and observed with an electron microscope.
◎… Halation prevention effect is great.
○ ... Halation prevention effect.
Δ: Little antihalation effect.
× ... Halation occurred.
6). Fine pattern baking state on mesh fabric A fine pattern was baked on a mesh fabric of warp and weft density 350 mesh (350 pieces / 2.54 cm) obtained from the core-sheath composite monofilament and observed with an electron microscope.
A: Good adhesion and clearer pattern.
○: Good adhesion and good pattern edge.
Δ: Adhesive strength is inferior and pattern edges are poor.
X: No adhesive force and no pattern is formed.
実施例1
極限粘度(η)0.50のポリエチレンテレフタレートを鞘、極限粘度(η)0.80のポリエチレンテレフタレートを芯とし、ペレット状の鞘成分のポリエチレンテレフタレートに顔料濃度10%の割合でペレット状の黄色顔料(C.I.PIGイエローNo.193)を添加し、芯:鞘の複合比率が容積比率で80:20の円形同心複合フィラメントになるよう、紡糸温度290℃、巻き取り速度1000m/分で製造し、このフィラメントを延伸倍率4.4倍、延伸温度91℃、熱セット温度を130℃で延伸し、繊度13dtexの芯鞘複合モノフィラメントを得た。
Example 1
A polyethylene yellow terephthalate having an intrinsic viscosity (η) of 0.50 as a sheath and a polyethylene terephthalate having an intrinsic viscosity (η) of 0.80 as a core. (C.I.PIG Yellow No. 193) was added and produced at a spinning temperature of 290 ° C. and a winding speed of 1000 m / min so that a composite ratio of core: sheath was 80:20 in volume ratio. The filament was stretched at a stretch ratio of 4.4 times, a stretching temperature of 91 ° C., and a heat setting temperature of 130 ° C. to obtain a core-sheath composite monofilament having a fineness of 13 dtex.
得られた芯鞘複合モノフィラメントをスルーザー型織機に掛け、経・緯密度350メッシュ(350本/2.54cm)、回転数250rpmでメッシュ織物を製織した後、反射率を測定した。その後、微細パターンを焼き付けて顕微鏡で観察した。 The obtained core-sheath composite monofilament was placed on a slewer type loom to weave a mesh fabric at a warp / wet density of 350 mesh (350 pieces / 2.54 cm) and a rotational speed of 250 rpm, and then the reflectance was measured. Thereafter, the fine pattern was baked and observed with a microscope.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は4.5%であった。また、ハレーション防止効果が高く、微細パターンの接着力が良く、鮮明であった。初期弾性率は110cN/dtex、破断強度は6.0cN/dtexであり、実使用上特に問題のないレベルが得られた。 The reflectance of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 4.5%. In addition, the effect of preventing halation was high, and the adhesion of fine patterns was good and clear. The initial elastic modulus was 110 cN / dtex and the breaking strength was 6.0 cN / dtex, and a level with no problem in practical use was obtained.
実施例2
芯:鞘の複合比率を70:30に変更した以外は、実施例1と同様の方法で実施した。
Example 2
It implemented by the method similar to Example 1 except having changed the composite ratio of the core: sheath to 70:30.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は3.0%であった。また、ハレーション防止効果が高く、微細パターンの接着力が良く、実施例1と同様に鮮明であった。初期弾性率は100cN/dtex、破断強度は5.9cN/dtexであり、実使用上特に問題のないレベルが得られた。 The reflectance of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 3.0%. Further, the effect of preventing halation was high, the adhesive force of the fine pattern was good, and it was as clear as in Example 1. The initial elastic modulus was 100 cN / dtex and the breaking strength was 5.9 cN / dtex, and a level with no problem in practical use was obtained.
実施例3
芯:鞘の複合比率を90:10に変更した以外は、実施例1と同様の方法で実施した。
Example 3
The same procedure as in Example 1 was performed except that the core: sheath composite ratio was changed to 90:10.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は5.0%であった。また、ハレーション防止効果が高く、微細パターンの接着力が良く、実施例1、2と同様に鮮明であった。初期弾性率は118、破断強度は6.2cN/dtexであり、実使用上特に問題のないレベルが得られた。 The reflectance of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 5.0%. Further, the effect of preventing halation was high, the adhesive force of the fine pattern was good, and it was as clear as in Examples 1 and 2. The initial elastic modulus was 118 and the breaking strength was 6.2 cN / dtex, and a level with no problem in practical use was obtained.
実施例4
延伸倍率を4.6倍に変更した以外は、実施例1と同様の方法で実施した。
Example 4
It implemented by the method similar to Example 1 except having changed the draw ratio to 4.6 times.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は4.8%であった。また、ハレーション防止効果が高く、微細パターンの接着力が良く、実施例1〜3と同様に鮮明であった。初期弾性率は125cN/dtex、破断強度は7.0cN/dtexであり、実使用上特に問題のないレベルが得られた。 The reflectance of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 4.8%. Moreover, the halation prevention effect was high, the adhesive force of the fine pattern was good, and it was as clear as in Examples 1 to 3. The initial elastic modulus was 125 cN / dtex and the breaking strength was 7.0 cN / dtex, and a level with no problem in practical use was obtained.
比較例1
ナイロン6を鞘成分に使用し、紡糸温度を290℃、延伸温度85℃、延伸熱セット温度を180℃とした以外は実施例1と同様に実施した。
Comparative Example 1
The same procedure as in Example 1 was performed except that nylon 6 was used as the sheath component, the spinning temperature was 290 ° C., the stretching temperature was 85 ° C., and the stretching heat setting temperature was 180 ° C.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は4.5%であったが、初期弾性率は90cN/dtex、破断強度は5.7cN/dtexであり、実使用上必要な強度が得られず、寸法安定性が悪く、更には整経・製織工程で界面剥離してスカムが多発してメッシュ織物の目詰まりが起こり、ハレーション防止効果は得られるものの、微細パターンの接着力が悪く、鮮明なパターンが得られなかった。 The reflectivity of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 4.5%, but the initial elastic modulus was 90 cN / dtex and the breaking strength was 5.7 cN / dtex. The required strength is not obtained, the dimensional stability is poor, and further, interfacial peeling occurs in the warping and weaving process, scum occurs frequently, clogging of the mesh fabric occurs, and the antihalation effect is obtained, but the fine pattern The adhesive strength was poor and a clear pattern could not be obtained.
比較例2
鞘成分に、平均分子量が600のポリエチレングリコールをポリエステル中に4.8重量%共重合させた共重合ポリエステルを鞘成分として使用し、また顔料はベンゾトリアゾール使用した以外は実施例1と同様に実施した。
Comparative Example 2
As the sheath component, a copolymer polyester obtained by copolymerizing 4.8% by weight of polyethylene glycol having an average molecular weight of 600 in the polyester was used as the sheath component, and the same procedure as in Example 1 was performed except that benzotriazole was used as the pigment. did.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は10.0%であった。初期弾性率は92cN/dtex、破断強度は5.7cN/dtexであり、実使用上必要な強度が得られず、寸法安定性が悪かった。また、ハレーション防止効果はあまり得られず、微細パターンの接着力が悪く、鮮明なパターンが得られなかった。 The reflectance of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 10.0%. The initial elastic modulus was 92 cN / dtex and the breaking strength was 5.7 cN / dtex, and the strength required for actual use was not obtained, and the dimensional stability was poor. Further, the effect of preventing halation was not obtained so much, the adhesive force of the fine pattern was poor, and a clear pattern could not be obtained.
比較例3
延伸倍率を4.8倍とした以外は、実施例1と同様に実施した。
Comparative Example 3
It implemented like Example 1 except having made the draw ratio into 4.8 times.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は4.7%であったが、初期弾性率は130cN/dtex、破断強度は7.5cN/dtexと高く、メッシュ織物を製造する際に削れが発生してスカムがメッシュ織物の目に詰まり、ハレーション防止効果は得られるものの、微細パターンの接着力が悪く、鮮明なパターンが得られなかった。 The reflectivity of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 4.7%, but the initial elastic modulus was high at 130 cN / dtex and the breaking strength was 7.5 cN / dtex. Scraping occurred during the production, and the scum was clogged with the mesh fabric, and although an antihalation effect was obtained, the adhesive force of the fine pattern was poor and a clear pattern could not be obtained.
比較例4
有機系顔料を混練せず、白色の芯鞘複合モノフィラメントとし、製織工程で得られたメッシュ織物を0.2%の中性洗剤で洗浄、乾燥させた後、PVA−酢酸ビニル系感光性樹脂NK−14(ヘキスト社製)を塗布、乾燥し、塗り重ねによって膜厚を10〜12μmとした以外は、実施例1と同様に実施した。
Comparative Example 4
An organic pigment is not kneaded into a white core-sheath composite monofilament, and the mesh fabric obtained in the weaving process is washed with 0.2% neutral detergent and dried, and then PVA-vinyl acetate photosensitive resin NK. -14 (manufactured by Hoechst) was applied and dried, and was carried out in the same manner as in Example 1 except that the film thickness was changed to 10 to 12 μm by repeated coating.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は9.5%であった。初期弾性率は110cN/dtex、破断強度は6.0cN/dtexと高く、整経・製織工程での糸削れの影響により、メッシュ織物中にごく僅かな粉末状の汚れが織り込まれていたことから、感光性樹脂NK−14を塗布した際、膜厚にバラツキが生じ、微細パターンの接着力、鮮明さはやや劣り、ハレーション防止効果もあまり見られなかった。 The reflectance of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 9.5%. The initial elastic modulus was 110 cN / dtex and the breaking strength was high at 6.0 cN / dtex, and because of the influence of thread shaving in the warping and weaving process, very little powdery dirt was woven into the mesh fabric. When the photosensitive resin NK-14 was applied, the film thickness varied, the fine pattern adhesive strength and sharpness were slightly inferior, and the antihalation effect was not seen so much.
比較例5
芯鞘複合比率を60:40にした以外は、実施例1と同様の方法で実施した。
Comparative Example 5
It implemented by the method similar to Example 1 except having made the core-sheath compound ratio 60:40.
得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は5.0%であった。初期弾性率は85cN/dtex、強度は5.5cN/dtexであり、寸法安定性を維持するのに必要な強度が得られなかった。製織工程では糸削れが発生し易くなり、糸削れの影響により、メッシュ織物中にごく僅かな粉末状の汚れが織り込まれていたことから、微細パターンの接着力、鮮明さは劣るものの、ハレーション防止効果は見られた。 The reflectance of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 5.0%. The initial elastic modulus was 85 cN / dtex and the strength was 5.5 cN / dtex, and the strength required to maintain dimensional stability could not be obtained. In the weaving process, thread shaving is likely to occur, and because of the influence of thread shaving, a very slight amount of powdery dirt was woven into the mesh fabric, so although the adhesive strength and sharpness of the fine pattern were inferior, halation prevention The effect was seen.
比較例6
芯鞘複合比率を95:5にした以外は、実施例1と同様の方法で実施した。得られた芯鞘複合モノフィラメントを整経・製織したメッシュ織物の反射率は7.0%であった。初期弾性率は110cN/dtex、強度は6.0cN/dtexであり、寸法安定性を維持するのに必要な強度が得られたが、有機顔料を含む鞘成分の重量配分が少なく、整経・製織工程で芯鞘成分の界面剥離が発生したことから、メッシュ織物中にヒゲ状の汚れが織り込まれていたことから、ハレーション防止効果は満足できるものではなく、微細パターンの接着力、鮮明さも劣るものであった。
Comparative Example 6
It implemented by the method similar to Example 1 except having made the core-sheath compound ratio 95: 5. The reflectance of the mesh fabric obtained by warping and weaving the obtained core-sheath composite monofilament was 7.0%. The initial elastic modulus was 110 cN / dtex and the strength was 6.0 cN / dtex, and the strength required to maintain dimensional stability was obtained, but the weight distribution of the sheath component containing the organic pigment was small, and warping / Since the interfacial peeling of the core-sheath component occurred in the weaving process, the anti-halation effect was not satisfactory because the whisker-like dirt was woven into the mesh fabric, and the adhesion and sharpness of the fine pattern were inferior. It was a thing.
結果をまとめて表1に示す。 The results are summarized in Table 1.
Y1:第一降伏点 Y1: First yield point
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JP2016013639A (en) * | 2014-07-01 | 2016-01-28 | 株式会社Nbcメッシュテック | Metal mesh fabric for screen printing and screen plate for screen printing |
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