JP5421730B2 - Manufacturing method of glass fiber filter - Google Patents
Manufacturing method of glass fiber filter Download PDFInfo
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- JP5421730B2 JP5421730B2 JP2009248181A JP2009248181A JP5421730B2 JP 5421730 B2 JP5421730 B2 JP 5421730B2 JP 2009248181 A JP2009248181 A JP 2009248181A JP 2009248181 A JP2009248181 A JP 2009248181A JP 5421730 B2 JP5421730 B2 JP 5421730B2
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- 239000003365 glass fiber Substances 0.000 title claims description 105
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 229920005989 resin Polymers 0.000 claims description 51
- 239000011347 resin Substances 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 19
- 229920001187 thermosetting polymer Polymers 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000012298 atmosphere Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229920000877 Melamine resin Polymers 0.000 description 6
- 239000004640 Melamine resin Substances 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- JZLWSRCQCPAUDP-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine;urea Chemical compound NC(N)=O.NC1=NC(N)=NC(N)=N1 JZLWSRCQCPAUDP-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Description
本発明は、ガラス繊維から構成されるガラス繊維マットを使用したガラス繊維フィルタの製造方法に関するものである。 The present invention relates to a method for producing a glass fiber filter using a glass fiber mat composed of glass fibers.
従来、ガラス繊維を用いたガラス繊維フィルタ等のガラス繊維マットの製造方法として、例えば、特許文献１に開示がなされている。従来の製造方法は、回転ドラムに綾振しながらガラス繊維を巻回し、尿素樹脂やメラミン樹脂等を付着させて繊維間を結着することにより構成されたガラス繊維の積層体を、回転ドラムの軸方向に切り開いて平板状のガラス繊維積層体を形成する。そして、前記尿素樹脂やメラミン樹脂等が粘着性を有する状態で前記積層体を前記軸方向に伸長して厚さ方向に膨らませ（以下、「伸長工程」とする。）、その後、圧縮等を行ってガラス繊維マットとするものである。また、その他に、熱硬化性樹脂（特許文献２）、弾性的ポリエステル樹脂（引用文献３）又はアクリル系若しくはフェノール系等の熱硬化性水性組成物（引用文献４）を使用するものが提案されている。 Conventionally, for example, Patent Document 1 discloses a method for manufacturing a glass fiber mat such as a glass fiber filter using glass fibers. A conventional manufacturing method involves winding a glass fiber while traversing a rotating drum, attaching a urea resin, a melamine resin, or the like, and bonding the fibers together, thereby forming a glass fiber laminate on the rotating drum. A flat glass fiber laminate is formed by cutting in the axial direction. Then, in a state where the urea resin, the melamine resin or the like has adhesiveness, the laminate is expanded in the axial direction and expanded in the thickness direction (hereinafter referred to as “elongation process”), and then compression or the like is performed. Glass fiber mat. In addition, those using thermosetting resins (Patent Document 2), elastic polyester resins (Cited Document 3), or acrylic or phenolic thermosetting aqueous compositions (Cited Document 4) have been proposed. ing.
上記ガラス繊維間を接着する樹脂は、溶融ガラスを使用した高温下では、その伸長工程において粘着性を適切に保つことができず、不良品が発生しやすいという問題点があった。例えば、尿素樹脂やメラミン樹脂等の熱硬化性樹脂の場合、重合反応が開始してしまうと反応を止めることはできず、図１に示すように樹脂の粘着性は急激に変化して粘着性を調整することができない。このため、ガラス繊維積層体を形成してからおおよそ２４〜４８時間以内に伸長工程を行う必要があった。
また、ポリエステル樹脂等の熱可塑性樹脂の場合、加熱により粘着性の制御は可能であるが、同樹脂は高温環境下で使用されるエアフィルタの用途には向かないという問題があった。
The resin for bonding between the glass fibers has a problem that, under high temperature using molten glass, the adhesiveness cannot be properly maintained in the elongation process, and defective products are easily generated. For example, in the case of a thermosetting resin such as urea resin or melamine resin, the reaction cannot be stopped once the polymerization reaction starts, and the adhesiveness of the resin changes rapidly as shown in FIG. Can not be adjusted. For this reason, it was necessary to perform an extending | stretching process within about 24-48 hours after forming a glass fiber laminated body.
In the case of a thermoplastic resin such as a polyester resin, the adhesiveness can be controlled by heating. However, the resin has a problem that it is not suitable for an air filter used in a high temperature environment.
本発明は、高温環境下で使用することが可能で、しかも、繊維間の接着剤の粘着性の調整が容易なガラス繊維フィルタの製造方法を提供することを目的とする。 An object of this invention is to provide the manufacturing method of the glass fiber filter which can be used in a high temperature environment and is easy to adjust the adhesiveness of the adhesive agent between fibers.
本発明者等は、上記目的を達成するために鋭意研究の結果、下記の解決手段を見いだした。
本発明のガラス繊維フィルタの製造方法は、請求項１に記載の通り、ガラス繊維を交差するように積層し、前記ガラス繊維間に熱硬化型樹脂を付着させてガラス繊維マットを形成する工程、前記樹脂の反応開始温度以下の雰囲気下に前記ガラス繊維マットをおく工程、前記ガラス繊維マットを常温で保管する工程、前記ガラス繊維マットを伸長させる工程、及び、前記樹脂を硬化してガラス繊維フィルタとする工程を上記記載の順序で有し、前記熱硬化型樹脂は、水溶性又は溶媒溶解性で、反応開始温度が１００℃以上であり、前記ガラス繊維マットをおく工程は、前記ガラス繊維間で結着するまでの時間を前記樹脂の水分又は溶媒量を調整することにより任意に設定する工程であり、温度２０〜６０℃及び相対湿度３０〜８０％で、大気圧下で１〜２４時間の範囲内から設定する工程であることを特徴とする。
請求項２に記載の本発明は、請求項１に記載のガラス繊維フィルタの製造方法において、前記樹脂の反応開始温度以下の雰囲気下に前記ガラス繊維マットをおく工程は、大気下における前記樹脂の乾燥工程であることを特徴とする。
請求項３に記載の本発明は、請求項１又は２に記載のガラス繊維フィルタの製造方法において、前記ガラス繊維マットを保管する工程は、保管により粘着性が伸長可能領域を超えた場合に、水分を付与することで粘着性を前記伸長可能領域にする工程をさらに備えた。
請求項４に記載の本発明は、請求項１乃至３の何れか１項に記載のガラス繊維フィルタの製造方法において、前記ガラス繊維マットを形成する工程は、ガラス繊維を回転ドラムに巻回しながら前記樹脂を付着させ、前記回転ドラムに巻回されたガラス繊維の積層体を前記回転ドラムの軸方向に切り開いて前記ガラス繊維マットを形成する工程であることを特徴とする。
請求項５に記載の本発明は、請求項４に記載のガラス繊維フィルタの製造方法において、前記ガラス繊維マットを伸長させる工程は、前記ガラス繊維を前記ドラムの軸方向に伸長する工程であることを特徴とする。
請求項６に記載の本発明は、請求項１乃至５の何れか１項に記載のガラス繊維フィルタの製造方法において、前記ガラス繊維マットを形成する工程において、前記水溶性又は溶媒溶解性で、かつ熱硬化型樹脂の濃度を２０〜７０％とし、前記ガラス繊維マットに対して付着率（固形分換算）を１０〜４０％とすることを特徴とする。
As a result of intensive studies to achieve the above object, the present inventors have found the following solutions.
The method for producing a glass fiber filter according to the present invention includes, as described in claim 1, a step of laminating glass fibers so as to cross each other, and attaching a thermosetting resin between the glass fibers to form a glass fiber mat. A step of placing the glass fiber mat in an atmosphere below the reaction start temperature of the resin, a step of storing the glass fiber mat at room temperature, a step of extending the glass fiber mat, and a glass fiber filter by curing the resin. and a step of the order described above, the thermosetting resin is a water-soluble or solvent-soluble, the reaction starting temperature is at 100 ° C. or more, the step of placing said glass fiber mat, between the glass fibers in Ri step der arbitrarily set by adjusting the time until the sintered wearing water or solvent content of the resin, at a temperature 20 to 60 ° C. and a relative humidity of 30% to 80%, the atmospheric pressure Characterized in that in a step of setting the range of 1 to 24 hours.
According to a second aspect of the present invention, in the method for producing a glass fiber filter according to the first aspect, the step of placing the glass fiber mat in an atmosphere below the reaction start temperature of the resin includes the step of placing the resin in the air. It is a drying process.
The present invention described in claim 3 is the method for manufacturing a glass fiber filter according to claim 1 or 2 , wherein the step of storing the glass fiber mat is performed when the adhesive exceeds the stretchable region by storage. The method further comprises the step of making the adhesiveness the stretchable region by applying moisture.
According to a fourth aspect of the present invention, in the method for manufacturing a glass fiber filter according to any one of the first to third aspects, the step of forming the glass fiber mat is performed by winding the glass fiber around a rotating drum. The glass fiber mat is formed by attaching the resin and cutting the glass fiber laminate wound around the rotary drum in the axial direction of the rotary drum.
According to a fifth aspect of the present invention, in the method for producing a glass fiber filter according to the fourth aspect, the step of extending the glass fiber mat is a step of extending the glass fiber in the axial direction of the drum. It is characterized by.
According to a sixth aspect of the present invention, in the method for producing a glass fiber filter according to any one of the first to fifth aspects, in the step of forming the glass fiber mat, the water-soluble or solvent-soluble property is obtained. And the density | concentration of a thermosetting resin shall be 20 to 70%, and the adhesion rate (solid content conversion) shall be 10 to 40% with respect to the said glass fiber mat.
本発明によれば、ガラス繊維間の接着剤として水溶性又は溶媒溶解性で、かつ熱硬化型樹脂を使用して、この樹脂の反応開始温度以下の雰囲気下にガラス繊維マットをおく工程を設けることにより、ガラス繊維間の結着するまでの時間を、同樹脂の水分又は溶媒量を調整することにより任意に設定することができる。このため、樹脂付着後に、ガラス繊維マットに余熱が残っていたとしても、早期に硬化させずに水分調整を行うことにより、後に続く工程を急いで行う必要がなく、円滑な作業工程を確保することができる。また、ガラス繊維マットを形成する工程のみを行った後、異なる場所に輸送してからでもガラス繊維フィルタを作製することが可能となる。
また、水溶性又は溶媒溶解性で、かつ熱硬化型樹脂を用いることより、水分が存在する間は重合反応が起らないため、繊維交点でずれないように適切な粘着性を保つことができる。また、伸長工程前に硬化をすることで、樹脂を支点に繊維の移動が可能となるため繊維が破断することを防ぐことができる。
According to the present invention, there is provided a step of placing a glass fiber mat in an atmosphere below the reaction start temperature of the resin using a water-soluble or solvent-soluble resin as an adhesive between the glass fibers and using a thermosetting resin. Thus, the time until the glass fibers are bonded can be arbitrarily set by adjusting the moisture or the solvent amount of the resin. For this reason, even if residual heat remains in the glass fiber mat after the resin adheres, it is not necessary to quickly perform the subsequent process by adjusting the moisture without curing at an early stage, thereby ensuring a smooth work process. be able to. Moreover, after performing only the process of forming a glass fiber mat, it becomes possible to produce a glass fiber filter even after transporting to a different place.
In addition, by using a water-soluble or solvent-soluble and thermosetting resin, the polymerization reaction does not occur while moisture is present, so that appropriate tackiness can be maintained so as not to shift at the fiber intersection. . Moreover, since the fiber can be moved with the resin as a fulcrum by curing before the stretching step, the fiber can be prevented from breaking.
次に、本発明の実施の形態について説明する。
本実施の形態は、
（ａ）Ｅガラス、Ｃガラス、ホウケイ酸ガラス等のガラス繊維を交差するように積層し、前記ガラス繊維間にアクリル系、エポキシ系、ウレタン系、尿素系、メラミン系、フェノール系等の水溶性又は溶媒溶解性で、かつ熱硬化型樹脂を付着させてガラス繊維マットを形成する工程
（ｂ）前記樹脂の反応開始温度以下の雰囲気下に前記ガラス繊維マットをおく工程
（ｃ）前記ガラス繊維マットを伸長させる工程、及び、
（ｄ）前記樹脂を硬化してガラス繊維フィルタとする工程
を有するものである。
尚、水溶性又は溶媒溶解性型の樹脂は乾燥して固形分濃度が増大していくにつれて粘着性は徐々に上がるのに比べて、エマルジョン型の樹脂は、乾燥の初期ではあまり粘度は変化せず、終期で急激に変化しるため粘着性の制御が難しく、しかも、粘度が小さくガラス繊維マットに付着しにくいので好ましくない。
Next, an embodiment of the present invention will be described.
This embodiment is
(A) Glass fibers such as E glass, C glass, and borosilicate glass are laminated so as to cross each other, and water-soluble such as acrylic, epoxy, urethane, urea, melamine, phenol, etc. between the glass fibers. Or a step of forming a glass fiber mat by dissolving a solvent-soluble and thermosetting resin (b) placing the glass fiber mat in an atmosphere below the reaction start temperature of the resin (c) the glass fiber mat Elongating, and
(D) A step of curing the resin to form a glass fiber filter.
In addition, the viscosity of emulsion type resins does not change much at the beginning of drying, compared to the case where water-soluble or solvent-soluble resins dry and the solid content increases. However, since it changes abruptly at the end, it is difficult to control the adhesiveness, and the viscosity is small and it is difficult to adhere to the glass fiber mat.
工程（ａ）、工程（ｃ）及び工程（ｄ）に関しては、特許文献１等に開示された公知の方法を使用することができる。例えば、工程（ａ）は、ガラス繊維を回転ドラムに巻回しながら前記樹脂を付着させ、前記回転ドラムに巻回されたガラス繊維の積層体を前記回転ドラムの軸方向に切り開いて前記ガラス繊維マットを形成する工程となる。
工程（ａ）において形成されるガラス繊維マットの形状等は特に制限はないが、通常は、平均繊維径１０〜３０μｍのガラス長繊維から構成される。
Regarding the step (a), the step (c) and the step (d), a known method disclosed in Patent Document 1 or the like can be used. For example, in the step (a), the glass fiber mat is obtained by attaching the resin while winding the glass fiber around a rotating drum, and cutting the glass fiber laminate wound around the rotating drum in the axial direction of the rotating drum. It becomes the process of forming.
The shape of the glass fiber mat formed in the step (a) is not particularly limited, but is usually composed of long glass fibers having an average fiber diameter of 10 to 30 μm.
工程（ｂ）は、前記ガラス繊維マットを前記樹脂の反応開始温度以下の雰囲気におくものである。具体例を挙げるとすると、樹脂を硬化しないように乾燥させる工程となる。本発明では、前記樹脂として、水溶性又は溶媒溶解性で、かつ熱硬化型樹脂を使用する。同樹脂の水分又は溶媒量を調整することによりガラス繊維マットを構成するガラス繊維間の結着の時間を任意に調整できるからである。また、同樹脂の粘着性を調整することにより、硬化時に結着部位がずれることなくガラス繊維の破断を防ぐことができる。尚、同樹脂の反応開始温度は１００℃以上のものであることが好ましい。
また、同樹脂をガラス繊維に付着させる方法としては、特に制限するものではないが、例えば、噴霧、塗布、浸漬等する方法を挙げることができる。
また、前記樹脂の濃度についても、硬化後にガラス繊維間を結着し、工程（ｃ）の際に結着部位が支点となってガラス繊維間の関係を維持した状態で伸長できるものであれば特に制限するものではない。一例を挙げると、その濃度を２０〜７０％とし、ガラス繊維の全重量（ｇ）に対する付着量（ｇ）を固形分付着率とし、１０〜３０％とすることが好ましい。
In the step (b), the glass fiber mat is placed in an atmosphere below the reaction start temperature of the resin. If a specific example is given, it will be the process of drying so that resin may not be hardened. In the present invention, a water-soluble or solvent-soluble and thermosetting resin is used as the resin. This is because the binding time between the glass fibers constituting the glass fiber mat can be arbitrarily adjusted by adjusting the moisture or solvent amount of the resin. Moreover, by adjusting the adhesiveness of the resin, breakage of the glass fiber can be prevented without shifting the binding site during curing. The reaction initiation temperature of the resin is preferably 100 ° C. or higher.
Further, the method for adhering the resin to the glass fiber is not particularly limited, and examples thereof include a method of spraying, coating, and dipping.
Also, the concentration of the resin is such that it can be stretched in a state where the glass fibers are bound after curing and the relationship between the glass fibers is maintained at the binding site in the step (c). There is no particular limitation. As an example, the concentration is preferably 20 to 70%, and the adhesion amount (g) with respect to the total weight (g) of the glass fiber is defined as the solid content adhesion rate, and is preferably 10 to 30%.
工程（ｂ）の条件は、後の工程において、ガラス繊維間を結着させることができる程度に、ガラス繊維マット全体で水分又は溶媒量を均一にする必要があり、温度２０〜６０℃及び相対湿度３０〜８０％で、大気圧下で１〜２４時間程度とすることが好ましい。これにより、図２に示すように、ガラス繊維マットが適度な粘着性を有する伸長領域に到達した時点で乾燥工程を停止すれば、前記樹脂の反応開始温度以下なので重合反応が起こらず、粘着性を一定に保つことができ、結着部位が支点となってガラス繊維間の関係を維持した状態で工程（ｃ）を行うことが可能となる。従って、乾燥を防ぐことが可能な適切な保管状態であれば、数日〜数ヶ月の間粘着性はほぼ変化することなく、長期の保管が可能となる。
また、保管により粘着性が伸長可能領域を超えたとしても、加湿等の水分を付与することで粘着性を伸長可能領域にすることができる
The condition of the step (b) is that the water or solvent amount needs to be uniform throughout the glass fiber mat so that the glass fibers can be bound in the subsequent step. It is preferable that the humidity is 30 to 80% and the atmospheric pressure is about 1 to 24 hours. Thereby, as shown in FIG. 2, if the drying process is stopped when the glass fiber mat reaches the stretched region having appropriate tackiness, the polymerization reaction does not occur because the temperature is lower than the reaction start temperature of the resin, and the tackiness is reduced. Can be kept constant, and the step (c) can be performed in a state where the binding site serves as a fulcrum and maintains the relationship between the glass fibers. Therefore, if it is in an appropriate storage state that can prevent drying, the adhesiveness is not substantially changed for several days to several months, and long-term storage is possible.
Moreover, even if the adhesiveness exceeds the stretchable region by storage, the adhesiveness can be made an extensible region by applying moisture such as humidification.
以下に本発明の実施例を比較例とともに説明する。
［実施例１］
軸方向の長さ１８００ｍｍ、直径１５００ｍｍの回転ドラムを１４５ｒｐｍで回転させ、直径約４ｍｍのノズルから１３００℃で溶融させたガラス繊維を綾振幅５０ｍｍで巻回し、その際に、５５％に調製された水溶性熱硬化型アクリル樹脂（製品名 Ａ−６００、ロームアンドハース社製）を噴霧してガラス繊維に対して均一に塗布するようにした。巻回されたガラス繊維積層体を前記回転ドラムの軸方向に切り開いて長さ１２００ｍｍ、幅４７００ｍｍのガラス繊維マットを得た。
その後、ガラス繊維マットを３０℃、相対湿度５０％の乾燥室で２４時間乾燥後、常温で保管した後、前記軸方向に伸長して、温度２３０℃で樹脂を加熱硬化し、厚さ１８ｍｍ、長さ４００００ｍｍ、幅１６００ｍｍの樹脂付着率２０％、密度５．８ｋｇ／ｍ３のガラス繊維フィルタを得た。このときの伸長可能期間は３ヶ月以上であった。尚、同フィルタの初期圧力損失は２０Ｐａ、捕集効率は８１％であった。
Examples of the present invention will be described below together with comparative examples.
[Example 1]
A rotating drum having an axial length of 1800 mm and a diameter of 1500 mm was rotated at 145 rpm, and a glass fiber melted at 1300 ° C. from a nozzle having a diameter of about 4 mm was wound with a twill amplitude of 50 mm. A water-soluble thermosetting acrylic resin (product name A-600, manufactured by Rohm and Haas) was sprayed so as to be uniformly applied to the glass fiber. The wound glass fiber laminate was cut open in the axial direction of the rotating drum to obtain a glass fiber mat having a length of 1200 mm and a width of 4700 mm.
Thereafter, the glass fiber mat was dried in a drying room at 30 ° C. and a relative humidity of 50% for 24 hours and stored at room temperature, and then stretched in the axial direction to heat and cure the resin at a temperature of 230 ° C. A glass fiber filter having a resin adhesion rate of 20% and a density of 5.8 kg / m 3 having a length of 40000 mm and a width of 1600 mm was obtained. The extendable period at this time was 3 months or more. The filter had an initial pressure loss of 20 Pa and a collection efficiency of 81%.
［比較例１］
水溶性熱硬化型アクリル樹脂に代えて、尿素メラミン樹脂（製品名 ＰＵＭ−１０、昭和高分子社製）を使用した以外は実施例１と同様にした。このときの伸長可能期間は約２０ｈであった。得られたガラス繊維フィルタは、厚さ１５ｍｍ、長さ４００００ｍｍ、幅１６００ｍｍであり、樹脂付着率３０％、密度８．４ｋｇ／ｍ３であった。尚、同フィルタの初期圧力損失は２３Ｐａ、捕集効率は８３％であった。
[Comparative Example 1]
It replaced with the water-soluble thermosetting acrylic resin, and was carried out similarly to Example 1 except having used urea melamine resin (product name PUM-10, Showa High Polymer Co., Ltd. product). At this time, the extension period was about 20 hours. The obtained glass fiber filter had a thickness of 15 mm, a length of 40000 mm, a width of 1600 mm, a resin adhesion rate of 30%, and a density of 8.4 kg / m 3 . The filter had an initial pressure loss of 23 Pa and a collection efficiency of 83%.
尚、上記フィルタ特性については、捕集効率、圧力損失をＪＩＳ Ｂ ９９０８（換気用エアフィルタ、電気集じん機の性能試験方法）の形式１（計数法）を適用して試験した。 In addition, about the said filter characteristic, the collection efficiency and the pressure loss were tested applying the format 1 (counting method) of JIS B 9908 (the air filter for ventilation, the performance test method of an electric dust collector).
上記実施例１は、水溶性熱硬化型アクリル樹脂を用いているため、常温では反応が開始せず、水分調整を行うことが容易であったため、常温保管を３ヶ月以上した後でも伸長してガラス繊維フィルタを得ることができた。また、３ヶ月保管したガラス繊維マットから得られたガラス繊維フィルタは、圧力損失及び捕集効率も目標値（初期圧力損失３０Ｐａ以下、捕集効率６０％以上）を満たしていた。
一方、比較例１は、尿素メラミン樹脂の反応開始温度が３０〜７０℃であるため、水の蒸発とともに重合が開始され、一度反応が開始されると逐次進行するため２日以上保管したものは伸長してガラス繊維フィルタを得ることができなかった。尚、２４時間保管してガラス繊維フィルタとしたものは、圧力損失及び捕集効率の性能は目標値を満たしていた。
Since Example 1 uses a water-soluble thermosetting acrylic resin, the reaction did not start at room temperature, and it was easy to adjust the water content. A glass fiber filter could be obtained. Moreover, the glass fiber filter obtained from the glass fiber mat stored for 3 months also satisfied the target values (initial pressure loss 30 Pa or less, collection efficiency 60% or more).
On the other hand, in Comparative Example 1, since the reaction start temperature of the urea melamine resin is 30 to 70 ° C., the polymerization is started as the water evaporates, and once the reaction is started, the reaction proceeds sequentially. The glass fiber filter could not be obtained by stretching. In addition, what was stored for 24 hours and used as the glass fiber filter satisfy | filled the target value in the performance of pressure loss and collection efficiency.
Claims (6)
前記樹脂の反応開始温度以下の雰囲気下に前記ガラス繊維マットをおく工程、
前記ガラス繊維マットを常温で保管する工程、
前記ガラス繊維マットを伸長させる工程、及び、
前記樹脂を硬化してガラス繊維フィルタとする工程を上記記載の順序で有し、
前記熱硬化型樹脂は、水溶性又は溶媒溶解性で、反応開始温度が１００℃以上であり、
前記ガラス繊維マットをおく工程は、前記ガラス繊維間で結着するまでの時間を前記樹脂の水分又は溶媒量を調整することにより任意に設定する工程であり、温度２０〜６０℃及び相対湿度３０〜８０％で、大気圧下で１〜２４時間の範囲内から設定する工程であることを特徴とするガラス繊維フィルタの製造方法。 Laminating glass fibers so as to cross each other, and attaching a thermosetting resin between the glass fibers to form a glass fiber mat,
Placing the glass fiber mat in an atmosphere below the reaction start temperature of the resin,
Storing the glass fiber mat at room temperature;
Extending the glass fiber mat; and
Having the process of curing the resin to make a glass fiber filter in the order described above ,
The thermosetting resin is water-soluble or solvent-soluble and has a reaction start temperature of 100 ° C. or higher.
Step of placing the glass fiber mat, Ri step der arbitrarily set by adjusting the water or solvent content of the resin the time until formation wear between the glass fibers, the temperature 20 to 60 ° C. and a relative humidity A method for producing a glass fiber filter, characterized by being a step of setting from 30 to 80% within a range of 1 to 24 hours under atmospheric pressure .
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