JP2008255504A - Two-layer structure filter material made of nonwoven fabric - Google Patents
Two-layer structure filter material made of nonwoven fabric Download PDFInfo
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- JP2008255504A JP2008255504A JP2007095832A JP2007095832A JP2008255504A JP 2008255504 A JP2008255504 A JP 2008255504A JP 2007095832 A JP2007095832 A JP 2007095832A JP 2007095832 A JP2007095832 A JP 2007095832A JP 2008255504 A JP2008255504 A JP 2008255504A
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- 239000000463 material Substances 0.000 title claims abstract description 41
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 181
- 239000000470 constituent Substances 0.000 claims abstract description 37
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 238000009423 ventilation Methods 0.000 claims description 8
- 239000000049 pigment Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 abstract description 4
- 229920000728 polyester Polymers 0.000 description 7
- 239000000428 dust Substances 0.000 description 5
- 210000001170 unmyelinated nerve fiber Anatomy 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920002821 Modacrylic Polymers 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001045 blue dye Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
本発明は、主として、調理場乃至は台所用の換気扇用フィルター材又はレンジフード用フィルター材として好適に用いられる不織布製二層構造フィルター材に関するものである。 The present invention mainly relates to a non-woven two-layer structure filter material suitably used as a filter material for a ventilation fan or a range hood for a kitchen or kitchen.
従来から、各種フィルター材として、不織布製のものが知られている。不織布製フィルター材は、構成繊維が多数集積されてなるもので、構成繊維相互間の間隙で、塵埃を捕捉して、濾過機能を発揮するものである。 Conventionally, non-woven fabrics are known as various filter materials. A non-woven fabric filter material is formed by aggregating a large number of constituent fibers, and captures dust in the gaps between the constituent fibers to exert a filtering function.
不織布製エアーフィルター材の場合、構成繊維相互間の間隙の大きい粗な構造を有する粗層と、構成繊維相互間の間隙の小さい密な構造を有する密層とを積層一体化した二層構造のものが用いられている（特許文献１）。そして、空気の流入側に粗層を配置し、空気の流出側に密層を配置するようにして、用いられている。これは、比較的大きな塵埃を粗層で捕捉し、比較的小さな塵埃を密層で捕捉して、エアーフィルター材の目詰まりを防止するためである。 In the case of a non-woven air filter material, a two-layer structure in which a coarse layer having a rough structure with a large gap between constituent fibers and a dense layer having a dense structure with a small gap between constituent fibers are laminated and integrated The thing is used (patent document 1). A coarse layer is disposed on the air inflow side and a dense layer is disposed on the air outflow side. This is to prevent clogging of the air filter material by capturing relatively large dust with a coarse layer and capturing relatively small dust with a dense layer.
しかるに、二層構造のエアーフィルター材は、外観上白色を呈するものが一般的である。また、構成繊維の種類によっては、若干黄色みがかった色とか、淡い灰色がかった色を呈するものがある。しかしながら、いずれにしても、全体に一色となっており、粗層も密層も同一色となっている。 However, an air filter material having a two-layer structure is generally white in appearance. Some types of constituent fibers exhibit a slightly yellowish color or a light grayish color. However, in any case, the color is entirely the same, and the coarse layer and the dense layer are the same color.
このため、不織布製二層構造フィルター材を換気扇用フィルター材等として使用する場合に、以下のような不具合があった。すなわち、換気扇用フィルター材等は、一般消費者によって換気扇等の枠に装着されるのであるが、この際、いずれが表面か裏面かを判断することなく、装着されることが多い。したがって、空気の流入側に密層を配置し、空気の流出側に粗層を配置してしまうことがあった。このような装着を行うと、使用後、短期間でフィルター材が目詰まりしてしまうという欠点があった。 For this reason, when the nonwoven fabric-made two-layer structure filter material is used as a filter material for a ventilation fan or the like, there are the following problems. That is, a filter material for a ventilation fan or the like is mounted on a frame of a ventilation fan or the like by a general consumer, but at this time, it is often mounted without determining which is the front surface or the back surface. Therefore, a dense layer may be disposed on the air inflow side and a coarse layer may be disposed on the air outflow side. When such attachment is performed, there is a drawback that the filter material is clogged in a short period after use.
そこで、本発明者は、粗層と密層の色彩を異ならせれば、いずれが表面か裏面かが、直ちに識別しうると考えた。粗層と密層の両者を、有彩色で着色するのは不合理であるから、一方だけを有彩色で着色し、他方は着色せずに白色としておくのが合理的である。 Therefore, the present inventor has considered that if the color of the coarse layer and the dense layer are different, it is possible to immediately identify which is the front surface or the back surface. Since it is unreasonable to color both the coarse layer and the dense layer with a chromatic color, it is reasonable to color only one with a chromatic color and leave the other with no color.
このような着想で、本発明者は、粗層の構成繊維として有彩色で着色したものや、密層の構成繊維として有彩色で着色したものを用いて、種々の試作を行った。しかしながら、いずれの場合も、有効な製品を得ることはできなかった。すなわち、いずれの層を着色しても、換気扇用フィルター材のように構成繊維相互間の間隙が比較的大きい場合には、白色となっている層を通して、着色層の色が十分に看取できるのである。したがって、目の悪い老人等のような消費者によっては、未だ、表面と裏面とを十分に識別できないという憾みがあった。 With such an idea, the present inventor has made various prototypes using chromatic colored fibers as the constituent fibers of the coarse layer and chromatic colored fibers as the dense layer constituent fibers. However, in any case, an effective product could not be obtained. That is, no matter which layer is colored, when the gap between the constituent fibers is relatively large as in the filter material for ventilation fans, the color of the colored layer can be sufficiently observed through the white layer. It is. Therefore, some consumers such as elderly people with poor eyes still have a grudge that the front and back sides cannot be sufficiently distinguished.
このため、本発明者は更に検討を重ねた結果、粗層及び密層の構成繊維の繊度構成を工夫し、かつ、最も繊度の小さい構成繊維を着色すれば、白色の粗層を通して、密層の色が看取しにくくなることが判明した。本発明は、このような知見を基づいてなされたものである。 For this reason, as a result of further studies, the present inventor devised the fineness configuration of the constituent fibers of the coarse layer and the dense layer, and colored the constituent fiber having the smallest fineness through the white coarse layer, the dense layer. It turned out that the color of became difficult to see. The present invention has been made based on such knowledge.
すなわち、本発明は、粗な構造を有する粗層と密な構造を有する密層とが積層一体化されてなる不織布製二層構造フィルター材において、前記粗層は、太繊度繊維と中繊度繊維とを構成繊維とし、該構成繊維相互間が結合剤で結合されてなり、該太繊度繊維と該中繊度繊維とは、無着色であって、外観上白色を呈し、前記密層は、中繊度繊維と細繊度繊維とを構成繊維とし、該構成繊維相互間が結合剤で結合されてなり、該中繊度繊維は無着色であって、外観上白色を呈し、該細繊度繊維は有彩色に着色されてなることを特徴とする不織布製二層構造フィルター材に関するものである。 That is, the present invention relates to a nonwoven fabric two-layer structure filter material in which a coarse layer having a coarse structure and a dense layer having a dense structure are laminated and integrated, wherein the coarse layer comprises thick fine fibers and medium fine fibers. The thick fibers and the medium fine fibers are non-colored and white in appearance, and the dense layer is a medium fiber. A fine fiber and a fine fiber are used as constituent fibers, and the constituent fibers are bonded to each other with a binder. The medium-fine fiber is uncolored and white in appearance. The fine fiber is chromatic. The present invention relates to a nonwoven fabric two-layer structure filter material characterized by being colored.
本発明に係る不織布製二層構造フィルター材は、粗な構造を有する粗層と、密な構造を有する密層とが積層一体化されてなるものである。ここで、「粗な構造」又は「密な構造」は、不織布を構成する構成繊維相互間の大きさによって区別されるものである。すなわち、粗な構造を有する粗層は、不織布を構成する構成繊維相互間の間隙が、密な構造を有する密層よりも相対的に大きいということである。したがって、本発明においては、構成繊維相互間の間隙の大きさが大きい方が、粗な構造を有する粗層であり、その間隙の大きさが小さい方が、密な構造を有する密層となる。 The nonwoven fabric two-layer structure filter material according to the present invention is formed by laminating and integrating a rough layer having a rough structure and a dense layer having a dense structure. Here, the “rough structure” or “dense structure” is distinguished by the size between constituent fibers constituting the nonwoven fabric. That is, the rough layer having a rough structure means that the gap between constituent fibers constituting the nonwoven fabric is relatively larger than that of the dense layer having a dense structure. Therefore, in the present invention, the larger gap between constituent fibers is a coarse layer having a rough structure, and the smaller gap is a dense layer having a dense structure. .
粗層と密層とは、積層一体化されている。一体化の手段は、従来公知の任意の手段が採用される。たとえば、バインダーで貼合して一体化したり、ニードルパンチによって粗層と密層の構成繊維を交絡させることによって、一体化する。また、粗層及び密層の構成繊維相互間は、結合剤によって結合されている。結合剤で結合させるには、結合剤液に粗層及び密層を含浸して結合剤を付与したり、結合剤液を粗層及び密層に噴霧又は塗布して結合剤を付与すればよい。結合剤液としては、従来公知のものが用いられ、アクリル系樹脂エマルジョンや塩化ビニル系樹脂エマルジョン等が用いられる。 The coarse layer and the dense layer are laminated and integrated. Any conventionally known means is adopted as the means for integration. For example, they are integrated by bonding with a binder, or by confounding the constituent fibers of the coarse layer and the dense layer by needle punching. Further, the constituent fibers of the coarse layer and the dense layer are bonded to each other by a binder. In order to bond with a binder, the binder solution may be impregnated with the coarse layer and the dense layer to give the binder, or the binder solution may be sprayed or applied to the coarse layer and the dense layer to give the binder. . As the binder solution, conventionally known ones are used, and acrylic resin emulsions, vinyl chloride resin emulsions, and the like are used.
粗層の構成繊維は、太繊度繊維と中繊度繊維である。一方、密層の構成繊維は、中繊度繊維と細繊度繊維である。ここで、「太繊度」、「中繊度」及び「細繊度」とは、相対的な意味で使用されている。たとえば、粗層を構成している構成繊維が三種あって、１５デニールのもの、１３デニールのもの、６デニールのもので、密層を構成している構成繊維が二種あって、６デニールのもの、３デニールのものである場合、中繊度繊維は粗層にも密層にも存在するものであるから、６デニールの繊維であるということになる。中繊度繊維が特定されれば、これより太い繊維が太繊度繊維となるから、粗層の１５デニール及び１３デニールの繊維が太繊度繊維である。一方、細繊度繊維は、中繊度繊維よりも細い繊維であるから、３デニールの繊維ということになる。このようにして、太繊度繊維、中繊度繊維及び細繊度繊維が特定される。 The constituent fibers of the coarse layer are thick fine fibers and medium fine fibers. On the other hand, the constituent fibers of the dense layer are medium fine fibers and fine fine fibers. Here, “thickness”, “mediumness” and “fineness” are used in a relative sense. For example, there are three types of constituent fibers that make up the coarse layer, 15 denier, 13 denier, and 6 denier, and there are two types of constituent fibers that make up the dense layer. In the case of the one having 3 deniers, the medium fineness fibers are present in both the coarse layer and the dense layer, so that they are 6 denier fibers. If the medium fineness fiber is specified, the thicker fiber becomes the thicker fineness fiber, and the 15 denier and 13 denier fibers of the coarse layer are the thicker fineness fibers. On the other hand, since the fineness fiber is a fiber thinner than the medium-fineness fiber, it is a 3 denier fiber. In this way, thick fine fibers, medium fine fibers and fine fine fibers are specified.
一般的に、中繊度繊維としては、５〜１０デニールのものが用いられる。したがって、一般的に、太繊度繊維としては、１０デニールを超え２０デニール以下のものが用いられ、細繊度繊維としては、１デニール以上５デニール未満のものが用いられる。太繊度繊維と中繊度繊維とは、それらが集積されて粗層が形成される。したがって、太繊度繊維が２０デニールを超えると、構成繊維相互間の大きさが大きくなり過ぎる傾向が生じ、粗大な塵埃が粗層で捕捉されずに通過してしまう傾向が生じる。中繊度繊維と細繊度繊維とは、それらが集積されて密層が形成される。したがって、細繊度繊維が１デニール未満になると、構成繊維相互間の大きさが小さくなりすぎる傾向が生じ、濾過に伴う圧力損失を大きくなって、空気等の通過性が悪くなる傾向が生じる。 Generally, 5 to 10 denier fibers are used as the medium fineness fibers. Accordingly, in general, fibers having a fineness of more than 10 deniers and not more than 20 deniers are used as thick fibers, and fibers having a denier of 1 to less than 5 deniers are used. The thick fine fibers and the medium fine fibers are accumulated to form a coarse layer. Therefore, if the fine fiber exceeds 20 denier, the size between the constituent fibers tends to be too large, and coarse dust tends to pass through without being captured by the coarse layer. Medium fine fibers and fine fine fibers are integrated to form a dense layer. Therefore, when the fineness fiber is less than 1 denier, the size between the constituent fibers tends to be too small, the pressure loss accompanying filtration increases, and the permeability of air or the like tends to deteriorate.
太繊度繊維、中繊度繊維及び細繊度繊維としては、ポリエステル繊維、再生ポリエステル繊維、モダアクリル繊維、塩化ビニリデン繊維、アクリル系繊維、生分解性繊維、ポリオレフィン系繊維等の従来公知のものが用いられる。粗層を構成している太繊度繊維及び中繊度繊維は、染料又は顔料による着色加工がされておらず、無着色となっている。ポリエステル繊維等の合成繊維に着色加工を施さないと、繊維自体は透明又は半透明となっているが、自然光の下では、繊維が光を乱反射するため、外観上は白色を呈することになる。したがって、粗層は、外観上白色を呈する。一方、密層を構成している中繊度繊維と細繊度繊維においては、中繊度繊維は着色加工されておらず無着色となっているが、細繊度繊維は、染料又は顔料によって有彩色に着色されている。なお、有彩色の種類は任意であるが、良好な外観を呈するのは青色である。 Conventionally known fibers such as a polyester fiber, a recycled polyester fiber, a modacrylic fiber, a vinylidene chloride fiber, an acrylic fiber, a biodegradable fiber, and a polyolefin fiber are used as the thick fine fiber, medium fine fiber, and fine fine fiber. The thick fine fibers and medium fine fibers constituting the coarse layer are not colored with a dye or pigment, and are not colored. If the synthetic fiber such as polyester fiber is not colored, the fiber itself is transparent or translucent. However, under natural light, the fiber diffusely reflects light, so that the appearance is white. Therefore, the coarse layer is white in appearance. On the other hand, in the medium fine fiber and the fine fine fiber constituting the dense layer, the medium fine fiber is not colored and is not colored, but the fine fine fiber is colored chromaticly with a dye or pigment. Has been. In addition, although the kind of chromatic color is arbitrary, it is blue that exhibits a good appearance.
本発明において、中繊度繊維が、粗層にも密層にも用いられているのが特徴である。粗層の中繊度繊維は、粗層に、構成繊維相互間で形成される間隙が小さくなる箇所を形成させ、密層の有彩色が粗層を通して看取しにくくなるという役割を果たしている。密層の中繊度繊維は、密層の有彩色の強さ（彩度）を低減させ、粗層を通して、密層の有彩色を看取しにくくなるという役割を果たしている。また、粗層と密層とをニードルパンチで積層一体化する際には、粗層と密層との中繊度繊維同士が絡みやすくなるので、両層を一体化しやすくするという役割を果たす。 The present invention is characterized in that medium-fineness fibers are used for both the coarse layer and the dense layer. The medium-fine fiber of the coarse layer plays a role in which the coarse layer forms a portion where the gap formed between the constituent fibers becomes small, and the chromatic color of the dense layer is difficult to see through the coarse layer. The medium-fine fiber in the dense layer plays a role of reducing the intensity (saturation) of the chromatic color of the dense layer and making it difficult to see the chromatic color of the dense layer through the coarse layer. Further, when the coarse layer and the dense layer are laminated and integrated with the needle punch, the medium fine fibers of the coarse layer and the dense layer are easily entangled with each other, so that both layers are easily integrated.
粗層における太繊度繊維と中繊度繊維との配合割合は、太繊度繊維：中繊度繊維＝５０〜７０質量％：５０〜３０質量％程度が好ましい。中繊度繊維の割合が５０質量％を超えると、粗層において形成される構成繊維相互間の間隙が、全体に小さくなり、粗大な塵埃によって目詰まりが生じる傾向がある。また、中繊度繊維の割合が３０質量％未満であると、構成繊維相互間の間隙が小さくなる箇所が少なくなり、密層の有彩色が粗層を通して看取されやすくなる傾向が生じる。密層における中繊度繊維と細繊度繊維との配合割合は、中繊度繊維：細繊度繊維＝２０〜４０質量％：８０〜６０質量％程度が好ましい。中繊度繊維の割合が２０質量％未満になると、密層の有彩色の強さを低減させにくくなり、粗層を通して、密層の有彩色が看取されやすくなる傾向が生じる。中繊度繊維の割合が４０質量％を超えると、密層の有彩色の強さが過剰に低減して、密層と粗層の識別がしにくくなるという傾向が生じる。 The blending ratio of thick fine fibers and medium fine fibers in the coarse layer is preferably thick fine fibers: medium fine fibers = 50 to 70 mass%: about 50 to 30 mass%. When the proportion of medium fineness fibers exceeds 50% by mass, the gap between the constituent fibers formed in the coarse layer is reduced as a whole, and clogging tends to occur due to coarse dust. Moreover, when the ratio of the medium fineness fiber is less than 30% by mass, there are fewer portions where the gaps between the constituent fibers are reduced, and the chromatic color of the dense layer tends to be easily observed through the coarse layer. The blending ratio of medium fine fibers and fine fine fibers in the dense layer is preferably medium fine fibers: fine fine fibers = 20 to 40% by mass: about 80 to 60% by mass. When the proportion of the medium fineness fiber is less than 20% by mass, it becomes difficult to reduce the intensity of the chromatic color of the dense layer, and the chromatic color of the dense layer tends to be easily observed through the coarse layer. When the ratio of the medium fineness fiber exceeds 40% by mass, the strength of the chromatic color of the dense layer is excessively reduced, which tends to make it difficult to distinguish the dense layer from the coarse layer.
本発明に係る不織布製二層構造フィルター材の目付は、１００〜２００ｇ／ｍ2程度であるのが好ましい。また、粗層の目付は、全体の目付の６０〜８０質量％程度であるのが好ましい。具体的には、８０〜１１０ｇ／ｍ2程度であるのが好ましい。一方、密層の目付は、全体の目付の２０〜４０質量％程度であるのが好ましい。具体的には、３０〜５０ｇ／ｍ2程度であるのが好ましい。 The basis weight of the non-woven fabric two-layer structure filter material according to the present invention is preferably about 100 to 200 g / m 2 . Further, the basis weight of the coarse layer is preferably about 60 to 80% by mass of the entire basis weight. Specifically, it is preferably about 80 to 110 g / m 2 . On the other hand, the basis weight of the dense layer is preferably about 20 to 40% by mass of the entire basis weight. Specifically, preferably about 30 to 50 g / m 2.
本発明に係る不織布製二層構造フィルター材は、従来のフィルター材が用いられている箇所に任意に適用しうるものである。そして、その適用時に、白色となっている粗層を空気等の流体の流入側に配置し、有彩色となっている密層を空気等の流体の流出側に配置すればよいだけである。特に、一般消費者が本発明に係る不織布製二層構造フィルター材を扱う場面、すなわち、本発明に係る不織布製二層構造フィルター材が換気扇用フィルター材又はレンジフード用フィルター材として用いられる場面では、フィルター材の表裏が一目で識別できるので、表裏面を間違わずに配置することができ、有益である。 The nonwoven fabric two-layer structure filter material according to the present invention can be arbitrarily applied to a place where a conventional filter material is used. And at the time of the application, it is only necessary to arrange the rough layer which is white on the inflow side of the fluid such as air and the dense layer which is chromatic color on the outflow side of the fluid such as air. In particular, in a scene where a general consumer handles the nonwoven fabric two-layer structure filter material according to the present invention, that is, in a scene where the nonwoven fabric two-layer structure filter material according to the present invention is used as a filter material for a ventilation fan or a range hood. Since the front and back sides of the filter material can be identified at a glance, it is possible to arrange the front and back sides without mistakes, which is beneficial.
本発明に係る不織布製二層構造フィルター材は、有彩色に着色された細繊度繊維を含有する密層と、無着色であって外観上白色を呈する太繊度繊維を含有する粗層とを積層一体化してなり、粗層及び密層には無着色の中繊度繊維が配合されている。したがって、粗層における中繊度繊維の作用によって、密層の有彩色が粗層を通して看取しにくくなる。また、密層における中繊度繊維の作用によって、密層の有彩色の強さが低減され、粗層を通して密層の有彩色が看取しにくくなる。
したがって、本発明に係る不織布製二層構造フィルター材は、表裏面の色の相違によって、粗層と密層とを識別することができる。よって、このフィルター材を換気扇等に装着する際に、粗層と密層の配置、すなわち、粗層を空気の流入側に密層を空気の流出側とする配置を間違えることを防止しうるという効果を奏する。
Non-woven fabric two-layer structure filter material according to the present invention is a laminate of a dense layer containing fine fibers colored chromatically and a coarse layer containing thick fine fibers that are uncolored and appear white in appearance. It is integrated, and the coarse and dense layers are blended with uncolored medium-fine fibers. Therefore, the chromatic color of the dense layer is difficult to see through the coarse layer due to the action of the medium fineness fibers in the coarse layer. In addition, the strength of the chromatic color of the dense layer is reduced by the action of the medium fineness fibers in the dense layer, and the chromatic color of the dense layer becomes difficult to see through the coarse layer.
Therefore, the nonwoven fabric two-layer structure filter material according to the present invention can distinguish between the rough layer and the dense layer by the difference in color between the front and back surfaces. Therefore, when this filter material is mounted on a ventilation fan or the like, it is possible to prevent mistakes in the arrangement of the coarse layer and the dense layer, that is, the arrangement in which the coarse layer is on the air inflow side and the dense layer is on the air outflow side. There is an effect.
実施例１
以下の短繊維を準備した。
［粗層の構成繊維として用いる短繊維］
Ａ１：繊度１５デニールで繊維長５１ｍｍのモダクリル繊維
Ａ２：繊度１３デニールで繊維長６４ｍｍの中空ポリエステル繊維
Ｂ ：繊度６デニールで繊維長５１ｍｍの再生ポリエステル繊維
［密層の構成繊維として用いる短繊維］
Ｂ：繊度６デニールの繊維長５１ｍｍの再生ポリエステル繊維
Ｃ：繊度３デニールで繊維長６４ｍｍの再生ポリエステル繊維であって、青色染料で染色した再生ポリエステル繊維
Example 1
The following short fibers were prepared.
[Short fiber used as constituent fiber of coarse layer]
A1: Modacrylic fiber having a fineness of 15 denier and a fiber length of 51 mm A2: Hollow polyester fiber having a fineness of 13 denier and a fiber length of 64 mm B: Regenerated polyester fiber having a fineness of 6 denier and a fiber length of 51 mm [short fiber used as a constituent fiber of the dense layer]
B: Regenerated polyester fiber having a fineness of 6 denier and a fiber length of 51 mm C: Regenerated polyester fiber having a fineness of 3 denier and a fiber length of 64 mm and dyed with a blue dye
Ａ１繊維３０質量％、Ａ２繊維３０質量％及びＢ繊維４０質量％を混綿し、カード機を通して、目付６５ｇ／ｍ2の粗層繊維ウェブを得た。一方、Ｂ繊維３０質量％及びＣ繊維７０質量％を混綿し、カード機を通して、目付２５ｇ／ｍ2の密層繊維ウェブを得た。粗層繊維ウェブと密層繊維ウェブとを積層した後、ニードルパンチ機を通して、両繊維ウェブを交絡させ、積層ウェブを得た。その後、結合剤液である塩化ビニル系樹脂エマルジョンを、スプレーで積層ウェブの両面に噴霧した。最後に、乾燥工程を通して、結合剤液の水を乾燥除去し、構成繊維相互間を結合剤で結合して、目付１３０ｇ／ｍ2の不織布製二層構造フィルター材を得た。 30% by mass of A1 fiber, 30% by mass of A2 fiber, and 40% by mass of B fiber were mixed, and a coarse layer fiber web having a basis weight of 65 g / m 2 was obtained through a card machine. On the other hand, 30% by mass of B fibers and 70% by mass of C fibers were mixed, and a dense layer fiber web having a basis weight of 25 g / m 2 was obtained through a card machine. After laminating the coarse-layer fiber web and the dense-layer fiber web, both fiber webs were entangled through a needle punch machine to obtain a laminated web. Thereafter, a vinyl chloride resin emulsion as a binder solution was sprayed on both sides of the laminated web by spraying. Finally, the water in the binder solution was removed by drying through the drying step, and the constituent fibers were bonded to each other with a binder to obtain a nonwoven fabric two-layer structure filter material having a basis weight of 130 g / m 2 .
得られた不織布製二層構造フィルター材は、Ａ１繊維、Ａ２繊維及びＢ繊維で構成されている粗層を通して、Ｂ繊維及びＣ繊維で構成されている密層の青色を看取しにくいものであった。 The obtained non-woven fabric two-layer structure filter material is difficult to see the blue color of the dense layer composed of B fiber and C fiber through the coarse layer composed of A1 fiber, A2 fiber and B fiber. there were.
比較例１
Ａ１繊維５０質量％及びＡ２繊維５０質量％を混綿し、カード機を通して、目付６５ｇ／ｍ2の粗層繊維ウェブを得た。一方、Ｃ繊維１００質量％をカード機を通して、目付２５ｇ／ｍ2の密層繊維ウェブを得た。粗層繊維ウェブと密層繊維ウェブとを積層した後、ニードルパンチ機を通して、両繊維ウェブを交絡させ、積層ウェブを得た。その後は、実施例１と同様にして不織布製二層構造フィルター材を得た。
Comparative Example 1
A coarse fiber web having a basis weight of 65 g / m 2 was obtained by blending 50% by mass of A1 fiber and 50% by mass of A2 fiber and passing through a card machine. On the other hand, 100 mass% of C fibers were passed through a card machine to obtain a dense layer fiber web having a basis weight of 25 g / m 2 . After laminating the coarse-layer fiber web and the dense-layer fiber web, both fiber webs were entangled through a needle punch machine to obtain a laminated web. Thereafter, a non-woven two-layer structure filter material was obtained in the same manner as in Example 1.
得られた不織布製二層構造フィルター材は、Ａ１繊維及びＡ２繊維で構成されている粗層を通して、Ｃ繊維で構成されている密層の青色を看取しやすいものであった。 The obtained non-woven fabric two-layer structure filter material was easy to see the blue color of the dense layer composed of C fibers through the coarse layer composed of A1 fibers and A2 fibers.
Claims (6)
前記粗層は、太繊度繊維と中繊度繊維とを構成繊維とし、該構成繊維相互間が結合剤で結合されてなり、該太繊度繊維と該中繊度繊維とは、無着色であって、外観上白色を呈し、
前記密層は、中繊度繊維と細繊度繊維とを構成繊維とし、該構成繊維相互間が結合剤で結合されてなり、該中繊度繊維は無着色であって、外観上白色を呈し、該細繊度繊維は有彩色に着色されてなる
ことを特徴とする不織布製二層構造フィルター材。 In the nonwoven fabric two-layer structure filter material in which a rough layer having a rough structure and a dense layer having a dense structure are laminated and integrated,
The coarse layer comprises thick fine fibers and medium fine fibers as constituent fibers, and the constituent fibers are bonded together by a binder, and the thick fine fibers and the medium fine fibers are uncolored, Appears white in appearance,
The dense layer comprises medium fine fibers and fine fine fibers as constituent fibers, and the constituent fibers are bonded together with a binder, the medium fine fibers are uncolored and white in appearance, A non-woven fabric two-layer structure filter material characterized in that fine fiber is colored chromatic.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62279817A (en) * | 1986-05-28 | 1987-12-04 | Japan Vilene Co Ltd | Air filter |
| JPH1181116A (en) * | 1997-09-08 | 1999-03-26 | Chisso Corp | Staple-fiber nonwoven fabric |
| JPH11226330A (en) * | 1998-02-18 | 1999-08-24 | Towa Sangyo Kk | Filter material for range hood |
| JP2004243250A (en) * | 2003-02-14 | 2004-09-02 | Dynic Corp | Air filter material |
| JP2004261737A (en) * | 2003-03-03 | 2004-09-24 | Nitto Denko Corp | Air filter medium |
-
2007
- 2007-03-31 JP JP2007095832A patent/JP4885036B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62279817A (en) * | 1986-05-28 | 1987-12-04 | Japan Vilene Co Ltd | Air filter |
| JPH1181116A (en) * | 1997-09-08 | 1999-03-26 | Chisso Corp | Staple-fiber nonwoven fabric |
| JPH11226330A (en) * | 1998-02-18 | 1999-08-24 | Towa Sangyo Kk | Filter material for range hood |
| JP2004243250A (en) * | 2003-02-14 | 2004-09-02 | Dynic Corp | Air filter material |
| JP2004261737A (en) * | 2003-03-03 | 2004-09-24 | Nitto Denko Corp | Air filter medium |
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