JP6534142B2 - Air conditioner inlet filter - Google Patents
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- JP6534142B2 JP6534142B2 JP2016215684A JP2016215684A JP6534142B2 JP 6534142 B2 JP6534142 B2 JP 6534142B2 JP 2016215684 A JP2016215684 A JP 2016215684A JP 2016215684 A JP2016215684 A JP 2016215684A JP 6534142 B2 JP6534142 B2 JP 6534142B2
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Description
本発明は、エアコンディショナーの吸気口に貼り付けるフィルターに関する。 The present invention relates to a filter attached to an air conditioner air inlet.
エアコンディショナーでは、その吸気口から室内の空気を装置内に吸気し、その空気を装置内の熱交換器に接触させることによって、空気の冷却又は加熱が行われる。この装置内には、空気中のホコリ等を除去するためのフィルターが設置されているが、フィルターの洗浄等の煩わしさを緩和するため、エアコンディショナーの吸気口を覆うプラスチックス製カバーには前記フィルターとは別に吸気口用フィルターを設ける方法が提案されている。このような吸気口用フィルターは、不織布の一方面に弱粘着性の粘着剤層を形成し、粘着剤層を介して吸気口に取付けられるようにしたものがほとんどである。例えば、対象物を貼着して通過する気体をろ過するためのフィルターであって、シート状の不織布と、前記不織布の一方面であって前記不織布の外周縁においてその一部のみに塗布された粘着剤とを備えたフィルターが知られている(特許文献1)。 In the air conditioner, cooling or heating of the air is performed by drawing air from the room into the device through the air inlet and bringing the air into contact with a heat exchanger in the device. Although a filter for removing dust and the like in the air is installed in this device, the plastic cover for covering the air conditioner air inlet is used to reduce the burden of cleaning the filter and the like. A method has been proposed in which an inlet filter is provided separately from the filter. Most of such filters for air inlets have a weak adhesive pressure-sensitive adhesive layer formed on one side of the non-woven fabric and can be attached to the air inlet via the pressure-sensitive adhesive layer. For example, it is a filter for sticking a target object and filtering a gas passing therethrough, which is applied to a sheet-like non-woven fabric and a part of the non-woven fabric on one side of the non-woven fabric. There is known a filter provided with an adhesive (Patent Document 1).
このようなエアコンディショナー用フィルターでは、不織布の一方の面にアクリル系粘着剤を塗布したものが一般的に使われている。近年では、換気扇フィルター等の貼着フィルターでは、ポリウレタン系粘着剤が使われるようになっている。ポリウレタン系粘着剤は、糊残り又は貼着耐久性の面において、アクリル系粘着剤よりも優れた性能を発揮することができる。 As such an air conditioner filter, one in which an acrylic adhesive is applied to one surface of a non-woven fabric is generally used. In recent years, polyurethane adhesive has come to be used in sticking filters such as ventilation fan filters. The polyurethane-based pressure-sensitive adhesive can exhibit superior performance to the acrylic pressure-sensitive adhesive in terms of adhesive residue or sticking durability.
しかしながら、エアコンディショナーの吸気口を覆うプラスチックス製カバーは、意匠性を向上させるために、特殊な塗装を施したり、梨地加工を行っているため、表面部がカバーと異なる材質から構成されることがあるため、通常のポリウレタン系粘着剤では対応できなくなっている。すなわち、このような異なる材質からなる表面部を有するプラスチック製カバーに対し、上述のようなポリウレタン系粘着剤でフィルターを貼着しても所望の粘着性が得られないため、吸気口用フィルターが脱落することがある。この場合、吸気口用フィルターが脱落しないように粘着力を強化する方法も考えられるが、粘着力を強くすると使用済みのフィルターを取り除く際にカバーの表面の塗装が剥がれ落ちたり、吸気口用フィルターの粘着剤が残る現象(糊残り)が生じる。 However, the plastic cover that covers the air conditioner air inlet should be made of a material different from that of the cover, because special coatings and satin finishing are applied to improve the design. Because of this, conventional polyurethane-based pressure-sensitive adhesives can not be used. That is, even if the filter is attached to a plastic cover having a surface portion made of such different materials with a polyurethane-based adhesive as described above, the desired adhesiveness can not be obtained. May fall out. In this case, it is conceivable to strengthen the adhesive force so that the inlet filter does not fall off, but if the adhesive force is enhanced, the coating on the surface of the cover may peel off when removing the used filter, or the inlet filter The phenomenon of adhesive left behind (adhesion residue) occurs.
従って、本発明の主な目的は、フィルターの脱落を防止するとともに使用後のフィルター剥離時における糊残りが低減ないしは解消できる吸気口用フィルターを提供することにある。 Therefore, the main object of the present invention is to provide a filter for an air inlet which can prevent the dropout of the filter and reduce or eliminate the adhesive residue at the time of the filter removal after use.
本発明者は、種々の市販の2液混合型ポリウレタン系粘着剤について研究・実験を重ねたところ、メーカー指定の割合で硬化剤を主剤に混合した上で不織布に適用しても糊残りは改善しないことが判明した。この原因は、不織布のように表面に凹凸を有するような材料に対しては、印刷機、コーター等で粘着剤層を形成する過程で、均一かつ平滑な表面を有する塗工膜を不織布表面に形成できない結果、被貼付体であるカバーから不織布から脱落しやすいものになっていることを突き止めた。 The inventor conducted research and experiments on various commercially available two-component mixed polyurethane-based adhesives, and after the curing agent was mixed with the main agent at the ratio specified by the manufacturer, the adhesive residue was improved even when applied to the non-woven fabric It turned out not to. The reason for this is that for materials such as nonwoven fabrics that have irregularities on the surface, a coating film with a uniform and smooth surface can be applied to the surface of the nonwoven fabric in the process of forming the adhesive layer with a printing machine, coater, etc. As a result of not being able to be formed, it was found out that the non-woven fabric was apt to fall off from the cover which is the body to be bonded.
そこで、本発明者は、特定の分子量をもつポリウレタンポリオールに対して特定割合で硬化剤を主剤に配合してなる2液混合型ポリウレタン系粘着剤を不織布に適用することにより、上記目的を達成できることを見出し、本発明を完成するに至った。 Therefore, the inventor of the present invention can achieve the above object by applying to a non-woven fabric a two-component mixed polyurethane-based pressure-sensitive adhesive in which a curing agent is mixed with a main agent at a specific ratio to a polyurethane polyol having a specific molecular weight. The present invention has been completed.
すなわち、本発明は、下記のエアコン吸気口用フィルターに係る。
1. エアコンディショナーの吸気口を覆うプラチックス製カバーに貼り付けて使用するフィルターであって、
(1)前記フィルターは、厚み1.0〜2.0mm及び目付け20〜50g/m2である不織布及びその不織布の一方面の全面又は一部に形成された粘着剤層を含み、
(2)前記粘着剤層は、主剤及び硬化剤を含む2液混合型ポリウレタン系粘着剤により形成されており、
(3)前記主剤は、分子量が18000〜23000のポリウレタンポリオールを主剤中95〜100重量%含み、
(4)前記硬化剤は、脂肪族系多官能イソシアネートであって、前記主剤100重量部に対して6〜8重量部含まれ、
(5)前記粘着剤層の厚みは、180〜300μmであり、
(6)前記不織布に対する粘着剤層の面積割合が10〜30%であり、
(7)前記カバーの表面が樹脂コーティング又は梨地加工されており、
(8)下記条件(8−1)及び(8−2):
(8−1) ABS板(表面粗度:鏡面)及びPS(ポリスチレン)板(表面粗度:鏡面)に当該フィルター(4cm×11cmであり、不織布に対して幅5mmの粘着剤層が30mm間隔の格子状になるように印刷機で塗工したもの(不織布に対する粘着剤層が占める面積割合は全体の17.7%))の粘着剤層の面をローラーで圧力2kg/cm2にて1往復させる方式で貼り付け、フィルター貼り付け後の当該板を垂直に立掛け、温度25℃及び湿度75%で3ヶ月静置した場合において、3ヶ月経過後に全くフィルターの脱落が認められない又は一部に剥離はあるものの、フィルターが脱落しないこと、
(8−2)前記と同じ方式でABS板(表面粗度:鏡面)及びPS(ポリスチレン)板(表面粗度:鏡面)に当該フィルター(4cm×11cmであり、不織布に対して幅5mmの粘着剤層が30mm間隔の格子状になるように印刷機で塗工したもの(不織布に対する粘着剤層が占める面積割合は全体の17.7%))を貼り付け、フィルター貼り付け後の当該板を、温度25℃及び40℃で湿度75%の恒湿恒温炉に3ヶ月間保持した後にフィルターを前記板より剥がした際に、前記板に視認できる糊残りが全く無いこと
を満たす、
ことを特徴とするエアコン吸気口用フィルター。
2. 粘着剤が、主剤100重量部に対して紫外線吸収剤0.25〜0.5重量部をさらに含む、前記項1に記載のエアコン吸気口用フィルター。
3. 粘着剤層上にさらに剥離シートが積層されている、前記項1又は2に記載のエアコン吸気口用フィルター。
4. 粘着剤層が不織布に対してストライプ状、格子状、散点状又は絵柄模様に形成されている、前記項1〜3のいずれかに記載のエアコン吸気口用フィルター。
5. 吸気口が室内の空気を吸込むための空気吸入口である、前記項1〜4のいずれかに記載のエアコン吸気口用フィルター。
That is, the present invention relates to the following air conditioner inlet filter.
1. A filter that is used by sticking to a plastic cover that covers the air conditioner air inlet,
(1) The filter includes a non-woven fabric having a thickness of 1.0 to 2.0 mm and a basis weight of 20 to 50 g / m 2 and a pressure-sensitive adhesive layer formed on all or part of one surface of the non-woven fabric
(2) The pressure-sensitive adhesive layer is formed of a two-component mixed polyurethane-based pressure-sensitive adhesive containing a main agent and a curing agent,
(3) The main agent contains 95 to 100% by weight of a polyurethane polyol having a molecular weight of 1,800 to 23,000 in the main agent ,
(4) The curing agent is an aliphatic polyfunctional isocyanate, and is contained in an amount of 6 to 8 parts by weight with respect to 100 parts by weight of the main agent,
(5) The thickness of the pressure-sensitive adhesive layer is 180 to 300 μm,
(6) The area ratio of the pressure-sensitive adhesive layer to the non-woven fabric is 10 to 30%,
(7) The surface of the cover is resin-coated or textured.
(8) The following conditions (8-1) and (8-2):
(8-1) The filter (4 cm × 11 cm ) on an ABS plate (surface roughness: specular surface) and PS (polystyrene) plate (surface roughness: specular surface) of those coated by the printing machine so as to lattice-shaped surface of the pressure-sensitive adhesive layer of) (total 17.7% of the area ratio adhesive layer occupied for nonwoven) at a pressure 2 kg / cm 2 using a roller 1 No sticking out of the filter is observed after 3 months, when pasting by reciprocating method, standing the plate after filter pasting vertically, standing for 3 months at 25 ° C. and 75% humidity, Although there is peeling in the part, the filter does not fall off,
(8-2) In the same manner as above, the filter (4 cm × 11 cm ) is adhered to an ABS plate (surface roughness: mirror surface) and PS (polystyrene) plate (surface roughness: mirror surface) , 5 mm in width with respect to nonwoven fabric Affixing a plate coated with a printing machine (the area ratio occupied by the pressure-sensitive adhesive layer to the non-woven fabric is 17.7% of the whole) so that the agent layer becomes a grid of 30 mm intervals , And, when the filter is removed from the plate after being held in a constant humidity oven with a temperature of 25 ° C. and 40 ° C. and a humidity of 75% for 3 months, it is satisfied that no glue residue is visible on the plate .
A filter for air conditioner inlets characterized by
2. The air-conditioner air-intake filter according to item 1, wherein the pressure-sensitive adhesive further comprises 0.25 to 0.5 parts by weight of an ultraviolet absorber based on 100 parts by weight of the main agent.
3. 3. A filter according to claim 1 or 2, wherein a release sheet is further laminated on the pressure-sensitive adhesive layer.
4. The air-conditioner air-intake filter according to any one of Items 1 to 3 , wherein the pressure-sensitive adhesive layer is formed in a stripe shape, a lattice shape, a scattered point shape, or a pattern on the non-woven fabric.
5. The air-conditioner air-intake filter according to any one of Items 1 to 4 , wherein the air-intake port is an air intake port for sucking in air in the room.
本発明のエアコン吸気口用フィルターによれば、所定の分子量を有するポリウレタンポリオールとともに特定量の硬化剤を含む2液混合型ポリウレタン系粘着剤を不織布に適用していることから、当該粘着剤をエアコンの吸気口に貼着した場合は、所定の粘着力が得られ、エアコンからのフィルターの脱落をより効果的に抑制ないしは防止できる一方、フィルターの取り外し時には糊残りの問題も解消することができる。 According to the air conditioner inlet filter of the present invention, since the two-component mixed polyurethane-based pressure-sensitive adhesive containing the specific amount of the curing agent together with the polyurethane polyol having the predetermined molecular weight is applied to the non-woven fabric In the case where the filter is stuck to the air inlet of the air conditioner, a predetermined adhesive strength can be obtained, and the dropout of the filter from the air conditioner can be more effectively suppressed or prevented, while the problem of adhesive residue can be resolved when the filter is removed.
本発明のエアコン吸気口用フィルターは、エアコンディショナーの吸気口を覆うカバーに貼り付けて使用するフィルターであって、
(1)前記フィルターは、不織布及びその不織布の一方面の全面又は一部に形成された粘着剤層を含み、
(2)前記粘着剤層は、主剤及び硬化剤を含む2液混合型ポリウレタン系粘着剤により形成されており、
(3)前記主剤は、分子量が15000〜25000のポリウレタンポリオールを含み、
(4)前記硬化剤は、前記主剤100重量部に対して6〜8重量部含まれる、ことを特徴とする。
The filter for air conditioner inlet according to the present invention is a filter that is used by being attached to a cover that covers the inlet of the air conditioner,
(1) The filter includes a non-woven fabric and a pressure-sensitive adhesive layer formed on all or part of one surface of the non-woven fabric,
(2) The pressure-sensitive adhesive layer is formed of a two-component mixed polyurethane-based pressure-sensitive adhesive containing a main agent and a curing agent,
(3) The main agent comprises a polyurethane polyol having a molecular weight of 15,000 to 25,000,
(4) The curing agent is contained in an amount of 6 to 8 parts by weight with respect to 100 parts by weight of the main agent.
本発明のエアコン吸気口用フィルター(本発明フィルター)は、エアコンディショナーの吸気口を覆うカバーに適用することができる。図1には、エアコンディショナー(家庭用エアコン)に本発明フィルターを適用した例を示す。この家庭用エアコン20では、1)エアコン20のカバー前面21には室内の空気を吸込むための空気吸入口22及び2)吸込まれた空気を冷却又は加温した後に室内に吹出すための空気吐出口23を有する。また、図1に示すように、エアコン20には、必要に応じて3)室内の温度を検知して吹出し温度を制御するための温度センサー24が取付けられていても良い。また、空気吸入口22は、一般にエアコン20の幅方向に平行に伸びる複数の桟によって構成されている。 The filter for air conditioner inlets of the present invention (the filter of the present invention) can be applied to a cover that covers the inlets of an air conditioner. FIG. 1 shows an example in which the filter of the present invention is applied to an air conditioner (home air conditioner). In this home air conditioner 20, 1) an air inlet 22 for sucking in indoor air to the cover front surface 21 of the air conditioner 20 and 2) an air outlet for blowing into the room after cooling or heating the sucked air It has an outlet 23. Further, as shown in FIG. 1, the air conditioner 20 may be attached with a temperature sensor 24 for detecting the temperature of the room 3 and controlling the blowout temperature, if necessary. The air inlet 22 is generally constituted by a plurality of bars extending in parallel in the width direction of the air conditioner 20.
そして、図1では、本発明フィルター15はエアコン20のカバー前面21及びカバー上面25に取付けられている。本発明では、吸気口を覆うカバーの全面又はその一部に本発明フィルターを貼り付けることができる。特に、吸気口を覆うカバーの全面に本発明フィルターを貼り付けることが望ましい。 Further, in FIG. 1, the filter 15 of the present invention is attached to the cover front surface 21 and the cover upper surface 25 of the air conditioner 20. In the present invention, the filter of the present invention can be attached to the entire surface or a part of the cover covering the intake port. In particular, it is desirable to paste the filter of the present invention on the entire surface of the cover covering the air inlet.
本発明フィルターで使用される不織布そのものは、公知又は市販のものを使用することができる。すなわち、天然繊維、合成繊維、これらの混合物からなる不織布をいずれも使用することができるが、例えばポリエステル繊維、ポリアミド繊維、ポリイミド繊維等の合成繊維製不織布を好適に使用することができる。従って、例えばポリエチレンテレフタレート(PET)繊維からなる不織布も好適に使用することができる。不織布の製造方法も限定的でなく、例えばサーマルボンド法等の公知の製法によって製造された不織布を好適に用いることができる。 The non-woven fabric itself used in the filter of the present invention may be known or commercially available. That is, non-woven fabrics made of natural fibers, synthetic fibers, and mixtures thereof can be used, but non-woven fabrics made of synthetic fibers such as polyester fibers, polyamide fibers and polyimide fibers can be suitably used. Therefore, non-woven fabric made of, for example, polyethylene terephthalate (PET) fiber can also be suitably used. The method for producing the non-woven fabric is also not limited, and for example, non-woven fabric produced by a known production method such as a thermal bonding method can be suitably used.
また、前記不織布の厚みは限定的ではないが、厚みは例えば1.0〜2.0mm、特に1.2〜1.5mmであることが好ましい。また、不織布の目付けは、特に制限されず、例えば20〜50g/m2、特に30〜40g/m2であることが好ましい。 The thickness of the non-woven fabric is not limited, but preferably 1.0 to 2.0 mm, particularly 1.2 to 1.5 mm. Also, the basis weight of the non-woven fabric is not particularly limited, and is preferably, for example, 20 to 50 g / m 2 , and particularly 30 to 40 g / m 2 .
本発明フィルターは、不織布及びその不織布の一方面の全面又は一部に形成された粘着剤層を含む。例えば、図2には、図1で示した本発明フィルターを取り付ける前の展開状態を示す。図3にはそのフィルターの平面図の一部を示し、そのIV−IV断面図を図4に示す。吸気口用フィルター15は、粘着剤層32が不織布35の一方の面の一部に形成されている。より具体的には、粘着剤層32が不織布35に対してストライプ状に形成されている。本発明では、粘着剤層が不織布の一方の面の全面に形成されていても良いし、前記のように一部に形成されていても良い。さらに、不織布の片面の一部に粘着剤層を形成する場合は、図2及び図3のようにストライプ状に形成しても良いし、その他にも格子状、散点状、絵柄模様等のいずれの形態であっても良い。特に、不織布の片面の一部に粘着剤層を形成する場合、粘着剤の塗布面積を大きくすると、被貼付体(カバー)からフィルターが剥がれにくくなり、フィルターの保持力は向上するが、粘着剤の塗布部分は通気性がないために通気性を損うことがある。従って、吸気口フィルターとしてより効果的に機能させるためには、フィルターの不織布の貼着面側の面積に占める粘着剤の塗布部分の面積割合は通常10〜30%程度、特に15〜20%とすることが望ましい。 The filter of the present invention includes a non-woven fabric and a pressure-sensitive adhesive layer formed on the entire surface or part of one surface of the non-woven fabric. For example, FIG. 2 shows the unfolded state before the filter of the present invention shown in FIG. 1 is attached. FIG. 3 shows a part of a plan view of the filter, and its IV-IV cross-sectional view is shown in FIG. The pressure-sensitive adhesive layer 32 is formed on a part of one surface of the non-woven fabric 35 in the air-intake port filter 15. More specifically, the pressure-sensitive adhesive layer 32 is formed in a stripe shape with respect to the non-woven fabric 35. In the present invention, the pressure-sensitive adhesive layer may be formed on the entire surface of one surface of the non-woven fabric, or may be partially formed as described above. Furthermore, in the case of forming an adhesive layer on a part of one side of the non-woven fabric, it may be formed in stripes as shown in FIG. 2 and FIG. It may be in any form. In particular, when forming a pressure-sensitive adhesive layer on a part of one side of the non-woven fabric, if the application area of the pressure-sensitive adhesive is increased, the filter is less likely to be peeled from the adherend (cover) and the retention of the filter is improved. The applied part of the may not be breathable because it is not breathable. Therefore, in order to function as an intake port filter more effectively, the area ratio of the application part of the adhesive to the area of the non-woven fabric side of the filter is usually about 10 to 30%, particularly about 15 to 20%. It is desirable to do.
また、本発明フィルターは、粘着剤層上の剥離紙等の剥離シートを積層していても良い。例えば、図2のフィルターでは、図4に示すように使用前には粘着剤層32上に剥離紙37が積層されている。そして、使用時には、剥離紙37を粘着剤層32から剥がしてエアコンのカバーに貼着する。この際、粘着剤層32の端部側の位置が内方に距離L2の位置に形成されていると、その端部まで粘着剤層32が形成されているのに比べて剥離紙37がより剥がし易くなる。この剥離紙37の剥がし易さは、粘着剤層32の形成方向の端部におけるフィルター15の上辺16及び下辺17の位置においても同様である。 In the filter of the present invention, a release sheet such as release paper on the pressure-sensitive adhesive layer may be laminated. For example, in the filter of FIG. 2, as shown in FIG. 4, a release paper 37 is laminated on the pressure-sensitive adhesive layer 32 before use. Then, at the time of use, the release paper 37 is peeled off from the adhesive layer 32 and attached to the cover of the air conditioner. Under the present circumstances, if the position by the side of the end of pressure sensitive adhesive layer 32 is formed in the position of distance L 2 inward, compared with the pressure sensitive adhesive layer 32 being formed to the end, release paper 37 is more It becomes easy to peel off. The peelability of the release paper 37 is the same at the positions of the upper side 16 and the lower side 17 of the filter 15 at the end of the adhesive layer 32 in the forming direction.
本発明フィルターでは、粘着剤層が、主剤及び硬化剤を含む2液混合型ポリウレタン系粘着剤により形成されている。前記粘着剤における主剤としては、主成分として分子量15000〜25000(好ましくは18000〜23000)であるポリウレタンポリオールを含む。本明細書では、分子量は、すべて重量平均分子量を示す。分子量の測定方法は、島津製作所製「Prominence」を用いて実施した(カラム:TOSOH製 TSKgelGMHx2本連結、検出器:RID−10A、溶媒:THF、流速;1ml/分)。 In the filter of the present invention, the pressure-sensitive adhesive layer is formed of a two-component mixed polyurethane-based pressure-sensitive adhesive containing a main agent and a curing agent. The main agent in the pressure-sensitive adhesive contains, as a main component, a polyurethane polyol having a molecular weight of 15,000 to 25,000 (preferably 18,000 to 23,000). As used herein, all molecular weights refer to weight average molecular weight. The measuring method of molecular weight was implemented using "Prominence" by Shimadzu Corp. (column: made of TOSOH TSKgelGMHx two-piece coupling, detector: RID-10A, solvent: THF, flow rate; 1 ml / min).
ポリウレタンポリオールは、ポリエステルポリオールと、ポリエーテルポリオールとを、触媒存在下又は無触媒で有機ポリイソシアネ−ト化合物と反応させてなるものであり、それ自体公知又は市販のものを使用することができる。 The polyurethane polyol is formed by reacting a polyester polyol and a polyether polyol with an organic polyisocyanate compound in the presence or absence of a catalyst with or without a catalyst, and per se known or commercially available products can be used.
主剤中におけるポリウレタンポリオールの割合は、通常95重量%以上とし、さらには99重量%以上とする。従って、主剤中のポリウレタンポリオールの割合は100重量%であっても良い。 The proportion of the polyurethane polyol in the main agent is usually 95% by weight or more, and further 99% by weight or more. Therefore, the proportion of polyurethane polyol in the main agent may be 100% by weight.
前記硬化剤としては、例えば脂肪族系多官能イソシアネート等を好適に用いることができる。本発明において、硬化剤は、前記主剤100重量部に対して6〜8重量部とする。このように、本発明では、特定の分子量をもつポリウレタンポリオールを含み、なおかつ、特定量の硬化剤を含む粘着剤を使用することによって、糊残りの問題及びフィルター脱落の問題を一挙に解決することが可能となる。 As the curing agent, for example, aliphatic polyfunctional isocyanate can be suitably used. In the present invention, the curing agent is 6 to 8 parts by weight with respect to 100 parts by weight of the main agent. Thus, in the present invention, the problem of adhesive residue and the problem of filter detachment are solved at once by using a pressure-sensitive adhesive which contains a polyurethane polyol having a specific molecular weight and which contains a specific amount of a curing agent. Is possible.
上記のような2液混合型ポリウレタン系粘着剤で使用する主剤及び硬化剤そのものは、公知又は市販のものを使用することもできる。市販品としては、例えば主剤として製品名「サイアバインSH−101」(東洋インキ(株)製)と、硬化剤として製品名「サイアバインT−501」との組み合わせを好適に用いることができる。 As the main agent and the curing agent used in the two-component mixed polyurethane-based pressure-sensitive adhesive as described above, known or commercially available ones can be used. As a commercial item, for example, a combination of product name "Cyabain SH-101" (manufactured by Toyo Ink Co., Ltd.) as a main agent and product name "Cyabaine T-501" as a curing agent can be suitably used.
本発明では、本発明の効果を妨げない範囲内において、必要に応じて2液混合型ポリウレタン系粘着剤中に他の添加剤が含まれていても良い。例えば、紫外線吸収剤、充填剤、着色剤、酸化防止剤、消泡剤、光安定剤等の添加剤が挙げられる。特に、本発明では、紫外線吸収剤が含まれていることが望ましい。紫外線吸収剤の添加量は、所望の特性に応じて適宜設定することができるが、例えば主剤100重量部に対して0.25〜0.5重量部添加することができる。 In the present invention, other additives may be contained in the two-component mixed polyurethane-based pressure-sensitive adhesive, as needed, as long as the effects of the present invention are not impaired. For example, additives such as a UV absorber, a filler, a colorant, an antioxidant, an antifoaming agent, a light stabilizer and the like can be mentioned. In particular, in the present invention, it is desirable that a UV absorber be included. Although the addition amount of a ultraviolet absorber can be suitably set according to a desired characteristic, it can add 0.25-0.5 weight part with respect to 100 weight part of main ingredients, for example.
さらに、粘着剤(主剤又は硬化剤)は、必要に応じて溶媒で適宜希釈することができる。例えば、酢酸エチル等の有機溶剤を使用することができる。この場合の希釈率は限定的ではなく、例えば主剤100重量部に対して1〜30重量部の溶媒を配合することにより希釈することができる。 Furthermore, the pressure-sensitive adhesive (main agent or curing agent) can be appropriately diluted with a solvent, as necessary. For example, organic solvents such as ethyl acetate can be used. The dilution rate in this case is not limited, and can be diluted, for example, by blending 1 to 30 parts by weight of a solvent with respect to 100 parts by weight of the main agent.
粘着剤層の形成は、公知の方法を採用すれば良く、例えば粘着剤を不織布に塗布することにより塗膜を形成した後、前記塗膜を乾燥(固化)させる方法を採用することができる。塗布方法も限定的でなく、例えばローラー、スプレー、刷毛、印刷等によって実施することができる。この場合、公知の装置を使用することができ、例えばロールコーター法、コンマコーター法、ダイコーター法、リバースコーター法、シルクスクリーン法、グラビアコーター法等をいずれも採用することができる。また、塗膜を固化させる方法は、加熱による方法、紫外線による方法等のいずれも採用することができるが、特に加熱による方法を好ましく採用することができる。この場合の加熱温度は、所望の粘着剤層を形成できれば特に限定されないが、通常は120〜140℃、特に125〜130℃の範囲が好ましい。 The pressure-sensitive adhesive layer may be formed by a known method. For example, a method of drying (solidifying) the coated film may be employed after forming the coated film by applying the pressure-sensitive adhesive to the non-woven fabric. The application method is also not limited, and can be carried out by, for example, a roller, spray, brush, printing or the like. In this case, a known device can be used, and any of roll coater method, comma coater method, die coater method, reverse coater method, silk screen method, gravure coater method and the like can be adopted. Moreover, although the method of solidifying a coating film can employ | adopt any methods, such as the method by heating, the method by an ultraviolet-ray, especially the method by heating is preferably employable. The heating temperature in this case is not particularly limited as long as it can form a desired pressure-sensitive adhesive layer, but in general, the range of 120 to 140 ° C., particularly 125 to 130 ° C. is preferable.
粘着剤層(固化後)の厚みは、所望の粘着性等に応じて適宜設定することができるが、通常は100〜300μm、特に180〜230μmとすることが好ましい。 The thickness of the pressure-sensitive adhesive layer (after solidification) can be appropriately set depending on the desired adhesiveness and the like, but usually 100 to 300 μm, particularly preferably 180 to 230 μm.
本発明フィルターは、公知のエアコン吸気口用フィルターと同様の方法によって使用することができる。すなわち、エアコンの吸気口を覆うカバー表面上に本発明フィルターの粘着剤層を当接することにより貼着すれば良い。また、必要に応じて、本発明フィルターをカバーのサイズに合致させるために、本発明フィルターを裁断しても良い。本発明フィルターを適用するエアコンは、吸気口を覆うカバーを有するものであれば良く、例えば家庭用、業務用等のいずれであっても良い。カバーの材質も特に限定されないが、例えばABS、PS(ポリスチレン)等の合成樹脂が好適である。 The filter of the present invention can be used in the same manner as known air conditioner inlet filters. That is, the adhesive layer of the filter of the present invention may be adhered by contacting the surface of the cover covering the air inlet of the air conditioner. Also, if necessary, the filter of the present invention may be cut to match the size of the filter of the present invention. The air conditioner to which the filter of the present invention is applied may be any one having a cover for covering the air inlet, and may be, for example, any one for home use, business use and the like. The material of the cover is not particularly limited, but, for example, synthetic resins such as ABS and PS (polystyrene) are preferable.
以下に実施例及び比較例を示し、本発明の特徴をより具体的に説明する。ただし、本発明の範囲は、実施例に限定されない。 Examples and comparative examples are shown below, and the features of the present invention are more specifically described. However, the scope of the present invention is not limited to the examples.
実施例1〜7及び比較例1〜7
(1)2液混合型ポリウレタン系粘着剤の調製
表1には、本実施例で用いた市販のポリウレタンポリオールA〜Eの主剤の平均分子量の測定結果を示す。これらのポリウレタンポリオールを表2に示すように市販の脂肪族系多官能イソシアネート系硬化剤と所定の割合で混合し、さらに酢酸エチルで5〜20重量部希釈することによって2液混合型ポリウレタン系粘着剤をそれぞれ調製した。硬化剤としては、製品名「サイアバインT−501」を使用した。
Examples 1 to 7 and Comparative Examples 1 to 7
(1) Preparation of Two-Liquid Mixture Type Polyurethane-Based Pressure-Sensitive Adhesive Table 1 shows the measurement results of the average molecular weight of main components of the commercially available polyurethane polyols A to E used in this example. As shown in Table 2, these polyurethane polyols are mixed with a commercially available aliphatic polyfunctional isocyanate-based curing agent at a predetermined ratio, and further diluted by 5 to 20 parts by weight with ethyl acetate to obtain a two-component polyurethane adhesive Each agent was prepared. As a curing agent, product name "Cyabain T-501" was used.
(2)粘着加工
フィルターに用いる不織布として、市販の不織布(目付け35g/m2、厚み1.2mm±10%(メーカー公称値))を準備した。ポリウレタン系粘着剤は、不織布に対して幅5mmの粘着剤層が30mm間隔の格子状になるように印刷機で塗工した。このようにして得られたフィルターにおいて、不織布に対する粘着剤層が占める面積割合は全体の17.7%であった。粘着剤の乾燥条件としては、全長10mの乾燥炉の中を125〜130℃、18〜25m/分の速さで通過させることにより乾燥させた。得られた粘着剤層(乾燥後)の厚みは、200μm±20μmの範囲にあった。
(2) Adhesive processing As a nonwoven fabric used for a filter, a commercially available nonwoven fabric (fabric basis weight 35 g / m 2 , thickness 1.2 mm ± 10% (manufacturer nominal value)) was prepared. The polyurethane-based pressure-sensitive adhesive was applied by a printing machine such that the pressure-sensitive adhesive layer having a width of 5 mm was formed in a grid of 30 mm intervals with respect to the non-woven fabric. In the filter thus obtained, the area ratio of the pressure-sensitive adhesive layer to the non-woven fabric was 17.7% of the whole. As the drying conditions of the pressure-sensitive adhesive, it was dried by passing it at a speed of 18 to 25 m / min at 125 to 130 ° C. in a drying oven having a total length of 10 m. The thickness of the obtained pressure-sensitive adhesive layer (after drying) was in the range of 200 μm ± 20 μm.
試験例1
実施例及び比較例で得られた各フィルターを基材(市販のエアコンのカバー等)に取り付けて脱落の有無及び糊残りの有無をそれぞれ調べた。その結果を表2に示す。
Test Example 1
Each filter obtained in Examples and Comparative Examples was attached to a base material (cover of a commercially available air conditioner, etc.), and the presence or absence of dropping off and the presence or absence of adhesive residue were respectively checked. The results are shown in Table 2.
(1)フィルター脱落の有無
ABS板(表面粗度:鏡面)、PS(ポリスチレン)板(表面粗度:鏡面)及び東芝製エアコン木かげのカバー(表面クリヤー塗装品、表面粗度:鏡面)に各フィルター(4cm×11cm)を貼り付け、垂直に立掛け、室温(平均25℃)及び湿度75%(エアコンは除く。)で3ヶ月静置し、脱落の有無を確認した。なお、貼り付け(圧着)は、ローラーで圧力2kg/cm2にて1往復させる方式で実施した。得られたサンプルについてフィルター脱落の有無を調べた。全く脱落が認められなかった場合を「○」と評価し、一部に剥離はあるものの、脱落しなかった場合を「△」と評価し、脱落した場合を「×」と評価した。
(1) Existence of filter falling off Each of ABS plate (surface roughness: mirror surface), PS (polystyrene) plate (surface roughness: mirror surface) and cover of Toshiba air conditioner wood cover (surface clear coating, surface roughness: mirror surface) A filter (4 cm × 11 cm) was attached, vertically stood, and allowed to stand for 3 months at room temperature (average 25 ° C.) and humidity 75% (excluding air conditioner), and the presence or absence of detachment was confirmed. Incidentally, Paste (crimp) was performed in a manner that one reciprocation at a pressure 2 kg / cm 2 using a roller. The samples obtained were examined for the presence or absence of filter detachment. The case where no dropout was observed was evaluated as "o", and although there was peeling in part, the case where it did not drop out was evaluated as "?", And the case where it dropped out was evaluated as "x".
(2)糊残りの有無
被着体として試験例1と同じABS板、PS板及び東芝製エアコンディショナー:木かげ(表面クリヤー塗装品)に各フィルター(4cm×11cm)を貼り付け、室温(平均25℃)及び40℃で湿度75%の恒湿恒温炉に3ヶ月間保持した。その後にフィルターを被着体より剥がした際に、被着体に視認できる糊残りが全く無い場合を「○」と評価し、影響の無い程度にわずかに残っている場合を「△」と評価し、糊残りが視認でき、残った糊を拭き取る等の処置をしないと新たにフィルターを貼り付けできない状態を「×」と評価した。
(2) Presence or absence of adhesive residue As an adherend, the same ABS plate and PS plate as in Test Example 1 and Toshiba air conditioner: Each filter (4 cm × 11 cm) is pasted on a wood cover (surface clear paint), room temperature (average 25) And 40 ° C. in a constant humidity oven at 75% humidity for 3 months. After that, when the filter is peeled from the adherend, the case where there is no adhesive residue visible on the adherend is evaluated as "o", and the case where it is slightly remaining without influence is evaluated as "o" It was evaluated as "x" that the filter could not be newly attached unless the adhesive residue was visually recognized and the remaining adhesive was not wiped out.
表2の結果からも明らかなように、硬化剤の含有量については、主剤100重量部に対して6.0重量部から8.0重量部の範囲において、被貼付体に対する糊残り性の問題ない上、フィルターの脱落の問題もないことがわかる。特に、硬化剤の含有量を8.0重量部とした場合が最も優れた効果が認められた。次に、ポリウレタンポリオールの分子量についてみると、ポリウレタンポリオールの分子量は20000〜25000が特に優れた効果があることが確認された。粘着力を上げる目的で実施した低分子量(10000〜15000)のポリウレタンポリオールでは、硬化剤を削減できると考えたが、糊残りの問題を解決できなかった。また、糊残りの問題を解決する目的で、分子量(25000〜30000)の第1液に対して、硬化剤を減らした粘着剤については、塗工性が悪く、フィルターの脱落も認められた。 As is clear from the results in Table 2, the content of the curing agent is a problem with the adhesive property to the adherend in the range of 6.0 parts by weight to 8.0 parts by weight with respect to 100 parts by weight of the main agent There is also no problem with filter dropouts. In particular, when the content of the curing agent was 8.0 parts by weight, the most excellent effect was observed. Next, with regard to the molecular weight of the polyurethane polyol, it was confirmed that the molecular weight of the polyurethane polyol is from 20000 to 25,000 with particularly excellent effects. Although it was thought that the curing agent could be reduced with a low molecular weight (10,000 to 15,000) polyurethane polyol, which was carried out for the purpose of increasing the adhesive strength, the problem of adhesive residue could not be solved. In addition, with respect to the first liquid having a molecular weight (25000 to 30000) for the purpose of solving the problem of adhesive residue, the adhesive property in which the curing agent was reduced had poor coatability, and removal of the filter was also observed.
ちなみに、ポリウレタンポリオールC(分子量20000)に対する硬化剤のメーカー指定の配合割合は4重量部である。ところが、表2の比較例7に示すように、4重量部の配合割合では、糊残りが生じることがわかる。このことは、メーカーが推奨する配合割合の適正値は、不織布に対するものではないことが起因しているものと考えられる。 Incidentally, the mixing ratio specified by the manufacturer of the curing agent with respect to polyurethane polyol C (molecular weight: 20000) is 4 parts by weight. However, as shown in Comparative Example 7 of Table 2, it can be seen that a glue residue occurs at a blending ratio of 4 parts by weight. This is considered to be due to the fact that the appropriate value of the mixing ratio recommended by the manufacturer is not for the non-woven fabric.
このため、本発明の目的を達成するために、メーカー指定の配合割合とは別に、硬化剤量を検討し、配合割合をメーカー指定から外れる6〜8重量部にあえて設定したところ、エアコンディショナー用フィルターとして必要な粘着力が得られるとともに、糊残りは認められないという所望の結果を得ることができ、このような粘着剤がによりエアコンディショナーに適したフィルターを得ることができた。すなわち、表2の「評価」の欄にも示すように、比較例のフィルターは実用上問題があった(×)のに対し、実施例のフィルターは実用性の高いもの(○)が得られた。 For this reason, in order to achieve the object of the present invention, the amount of curing agent was examined separately from the mixing ratio specified by the manufacturer, and the mixing ratio was set to 6 to 8 parts by weight deviating from the manufacturer specification. It was possible to obtain the desired result that no adhesive residue was observed as well as the necessary adhesion as a filter was obtained, and such a pressure-sensitive adhesive made it possible to obtain a filter suitable for an air conditioner. That is, as shown in the column of "Evaluation" in Table 2, the filter of the comparative example had a problem in practical use (x), while the filter of the example had high practicability (o). The
Claims (5)
(1)前記フィルターは、厚み1.0〜2.0mm及び目付け20〜50g/m2である不織布及びその不織布の一方面の全面又は一部に形成された粘着剤層を含み、
(2)前記粘着剤層は、主剤及び硬化剤を含む2液混合型ポリウレタン系粘着剤により形成されており、
(3)前記主剤は、分子量が18000〜23000のポリウレタンポリオールを主剤中95〜100重量%含み、
(4)前記硬化剤は、脂肪族系多官能イソシアネートであって、前記主剤100重量部に対して6〜8重量部含まれ、
(5)前記粘着剤層の厚みは、180〜300μmであり、
(6)前記不織布に対する粘着剤層の面積割合が10〜30%であり、
(7)前記カバーの表面が樹脂コーティング又は梨地加工されており、
(8)下記条件(8−1)及び(8−2):
(8−1) ABS板(表面粗度:鏡面)及びPS(ポリスチレン)板(表面粗度:鏡面)に当該フィルター(4cm×11cmであり、不織布に対して幅5mmの粘着剤層が30mm間隔の格子状になるように印刷機で塗工したもの(不織布に対する粘着剤層が占める面積割合は全体の17.7%))の粘着剤層の面をローラーで圧力2kg/cm2にて1往復させる方式で貼り付け、フィルター貼り付け後の当該板を垂直に立掛け、温度25℃及び湿度75%で3ヶ月静置した場合において、3ヶ月経過後に全くフィルターの脱落が認められない又は一部に剥離はあるものの、フィルターが脱落しないこと、
(8−2)前記と同じ方式でABS板(表面粗度:鏡面)及びPS(ポリスチレン)板(表面粗度:鏡面)に当該フィルター(4cm×11cmであり、不織布に対して幅5mmの粘着剤層が30mm間隔の格子状になるように印刷機で塗工したもの(不織布に対する粘着剤層が占める面積割合は全体の17.7%))を貼り付け、フィルター貼り付け後の当該板を、温度25℃及び40℃で湿度75%の恒湿恒温炉に3ヶ月間保持した後にフィルターを前記板より剥がした際に、前記板に視認できる糊残りが全く無いこと
を満たす、
ことを特徴とするエアコン吸気口用フィルター。 A filter that is used by sticking to a plastic cover that covers the air conditioner air inlet,
(1) The filter includes a non-woven fabric having a thickness of 1.0 to 2.0 mm and a basis weight of 20 to 50 g / m 2 and a pressure-sensitive adhesive layer formed on all or part of one surface of the non-woven fabric
(2) The pressure-sensitive adhesive layer is formed of a two-component mixed polyurethane-based pressure-sensitive adhesive containing a main agent and a curing agent,
(3) The main agent contains 95 to 100% by weight of a polyurethane polyol having a molecular weight of 1,800 to 23,000 in the main agent ,
(4) The curing agent is an aliphatic polyfunctional isocyanate, and is contained in an amount of 6 to 8 parts by weight with respect to 100 parts by weight of the main agent,
(5) The thickness of the pressure-sensitive adhesive layer is 180 to 300 μm,
(6) The area ratio of the pressure-sensitive adhesive layer to the non-woven fabric is 10 to 30%,
(7) The surface of the cover is resin-coated or textured.
(8) The following conditions (8-1) and (8-2):
(8-1) The filter (4 cm × 11 cm ) on an ABS plate (surface roughness: specular surface) and PS (polystyrene) plate (surface roughness: specular surface) of those coated by the printing machine so as to lattice-shaped surface of the pressure-sensitive adhesive layer of) (total 17.7% of the area ratio adhesive layer occupied for nonwoven) at a pressure 2 kg / cm 2 using a roller 1 No sticking out of the filter is observed after 3 months, when pasting by reciprocating method, standing the plate after filter pasting vertically, standing for 3 months at 25 ° C. and 75% humidity, Although there is peeling in the part, the filter does not fall off,
(8-2) In the same manner as above, the filter (4 cm × 11 cm ) is adhered to an ABS plate (surface roughness: mirror surface) and PS (polystyrene) plate (surface roughness: mirror surface) , 5 mm in width with respect to nonwoven fabric Affixing a plate coated with a printing machine (the area ratio occupied by the pressure-sensitive adhesive layer to the non-woven fabric is 17.7% of the whole) so that the agent layer becomes a grid of 30 mm intervals , And, when the filter is removed from the plate after being held in a constant humidity oven with a temperature of 25 ° C. and 40 ° C. and a humidity of 75% for 3 months, it is satisfied that no glue residue is visible on the plate .
A filter for air conditioner inlets characterized by
The air conditioner inlet filter according to any one of claims 1 to 4 , wherein the air inlet is an air inlet for drawing air in the room.
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| JP3531659B2 (en) * | 1996-07-16 | 2004-05-31 | 株式会社槌屋 | Cut filter material |
| JP2000256638A (en) * | 1999-03-08 | 2000-09-19 | Toyo Ink Mfg Co Ltd | Polyurethane adhesive composition |
| JP2001123145A (en) * | 1999-10-25 | 2001-05-08 | Toyo Ink Mfg Co Ltd | Urethane resin adhesive |
| JP4082648B2 (en) * | 2000-07-14 | 2008-04-30 | 東洋アルミエコープロダクツ株式会社 | filter |
| JP2007169377A (en) * | 2005-12-20 | 2007-07-05 | Mitsubishi Chemicals Corp | Antistatic polyurethane adhesive and method for producing the same |
| JP2009209320A (en) * | 2008-03-06 | 2009-09-17 | Sekisui Chem Co Ltd | Double-sided pressure-sensitive adhesive tape for fixing abrasive |
| US20110104482A1 (en) * | 2008-07-16 | 2011-05-05 | Toyo Ink Mfg. Co., Ltd., | Polyurethane adhesive for outdoor use |
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