JP4964154B2 - Insect trapping sheet - Google Patents
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- JP4964154B2 JP4964154B2 JP2008007111A JP2008007111A JP4964154B2 JP 4964154 B2 JP4964154 B2 JP 4964154B2 JP 2008007111 A JP2008007111 A JP 2008007111A JP 2008007111 A JP2008007111 A JP 2008007111A JP 4964154 B2 JP4964154 B2 JP 4964154B2
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Landscapes
- Catching Or Destruction (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
本発明は、捕虫用粘着シートに関する。さらに詳しくは、本発明は、基材シートの一方の面に捕虫用の粘着剤層を有し、飛翔性害虫を効率よく捕殺することができると共に、加工性や保存性が良好な捕虫用粘着シート、特に紫外線誘引型の捕虫器に好適に使用し得る紫外線透過性及び耐紫外線劣化性に優れる捕虫用粘着シートに関するものである。 The present invention relates to an insect trapping adhesive sheet. More specifically, the present invention has an insecticide-use pressure-sensitive adhesive layer on one surface of the substrate sheet, can efficiently kill flying insects, and has good processability and storage stability. The present invention relates to a pressure-sensitive adhesive sheet for trapping that is excellent in ultraviolet-ray permeability and UV-resistant deterioration, which can be suitably used for a sheet, in particular, an ultraviolet-induced insect trap.
従来、ハエなどの飛翔性害虫を駆除するためにはハエトリ紙が用いられていた。このハエトリ紙は表面に粘着剤を塗設して形成したもので、ハエが発生しやすい場所に設置し、表面の粘着性によりハエを捕獲するものであったが、捕獲能力や捕獲できる害虫の種類が少ないといった問題から、その使用頻度が年々低下しつつあり、近年、殺虫剤を散布する駆除方法が主流となってきた。しかし、このように殺虫剤を散布する方法では、飛翔性害虫に対する効果は充分であるというものの、反面、散布された土壌や植物に対して、好ましくない生物活性や化学的特性を与えてしまい、自然環境や人体に悪影響を及ぼしてしまうなどの問題がある。そこで、最近、自然環境や人体に悪影響を与えることなく、害虫を捕獲できるハエトリ紙などの粘着性捕獲体が見直されるようになってきており、例えば分子量が１万〜５０万、且つ不飽和度が５モル％以下の高分子エラストマーと、分子量１００〜１万の軟化剤とからなる粘着剤組成物であって、荷重１０ｇ／ｃｍ2の時のズレ速度が１ｍｍ／ｍｉｎ以下、且つ荷重５０ｇ／ｃｍ2の時のズレ速度が１ｍｍ／ｍｉｎ以上であることを特徴とする飛翔害虫捕殺用粘着剤組成物が開示されている（例えば、特許文献１参照）。
一方、様々な産業における工場において、製品中への害虫類の混入は重大な問題であるため、各種の対策が行われている。その中で、虫の走光性という習性を利用した紫外線誘引型の捕虫器が知られている（例えば、特許文献２参照）。
この紫外線誘引型の捕虫器は、高い捕虫性や電撃殺虫器でみられるような死骸の飛散がない、メンテナンスが容易であるなどの観点から多く使用されてきている。この捕虫器に使用される粘着シートは、紫外線による誘虫性を考慮して、紫外線透過性及び耐紫外線劣化性が要求性能として挙げられる。また比較的体重が軽い飛翔性の害虫が対象となるため、凝集力が非常に低い粘着剤を用いるのが一般的である。しかし、凝集力が非常に低いため、加工性、保存性という点で劣り、ロール端面からの粘着剤のしみ出しや剥離シートから剥がす際の粘着剤層の凝集破壊が問題であった。
また、通常は1週間から１ヶ月の間、捕虫用蛍光灯の光(紫外線)が、粘着シートに照射され続けるため、粘着剤が劣化し、経時で捕虫性が低下するという問題点があった。
なお、前記特許文献１における技術は、紫外線誘引型の捕虫器に適用し得る技術ではない。
On the other hand, in plants in various industries, various measures are taken because the mixture of pests into products is a serious problem. Among them, an ultraviolet attracting type insect trap utilizing the habit of insect phototaxis is known (for example, see Patent Document 2).
This ultraviolet attracting type insect trap has been widely used from the viewpoints of high trapping property, no scattering of dead bodies as seen in electric shock killers, and easy maintenance. The pressure-sensitive adhesive sheet used in this insect trapping device includes ultraviolet transmittance and resistance to ultraviolet deterioration as required performance in consideration of insect attracting property by ultraviolet rays. In addition, since flying insect pests that are relatively light in weight are targeted, it is common to use an adhesive that has a very low cohesive force. However, since the cohesive force is very low, it is inferior in terms of workability and storage stability, and the problem of cohesive failure of the pressure-sensitive adhesive layer when exfoliating the pressure-sensitive adhesive from the roll end surface or peeling from the release sheet has been a problem.
Moreover, since the light (ultraviolet rays) of the fluorescent lamp for trapping is normally irradiated on the adhesive sheet for 1 week to 1 month, there is a problem that the adhesive is deteriorated and the trapping ability is lowered over time. .
In addition, the technique in the said patent document 1 is not a technique which can be applied to an ultraviolet attracting type insect trap.
本発明は、このような事情のもとで、基材シートの一方の面に捕虫用の粘着剤層を有し、飛翔性害虫を効率よく捕殺することができると共に、加工性や保存性が良好な捕虫用粘着シート、特に紫外線誘引型の捕虫器に好適に使用し得る紫外線透過性及び耐紫外線劣化性に優れる捕虫用粘着シートを提供することを目的としてなされたものである。 Under such circumstances, the present invention has a pesticide-use pressure-sensitive adhesive layer on one side of the base sheet, and can efficiently kill flying pests, and has processability and storage stability. The present invention has been made for the purpose of providing an excellent insect trapping adhesive sheet, particularly an insect trapping adhesive sheet that can be suitably used for an ultraviolet attracting type insect trap and has excellent ultraviolet transparency and UV resistance.
本発明者は、前記の好ましい性質を有する捕虫用粘着シートを開発すべく鋭意研究を重ねた結果、基材シートの一方の面に、粘着剤層として、特定の分子量を有する軟化剤と、特定の分子量を有するポリオレフィン系高分子エラストマーとを特定の割合で含むものを設け、かつ当該粘着シートの粘着剤層面同士を重ね合わせた場合の粘着剤層のせん断力が、ある範囲にある粘着シートが、その目的に適合し得ることを見出し、この知見に基づいて本発明を完成するに至った。
すなわち、本発明は、
［１］基材シートの一方の面に、（Ａ）数平均分子量が２００以上１万未満である軟化剤と、その１００質量部に対し、（Ｂ）数平均分子量が５０万を超えるポリオレフィン系高分子エラストマー０.０５〜１２質量部を含む粘着剤層を有する粘着シートであって、当該粘着シートの粘着剤層面同士を重ね合わせた場合のせん断力が、５〜７０Ｎ／３５ｍｍ×３５ｍｍであることを特徴とする捕虫用粘着シート、
［２］波長３４０〜４４０ｎｍにおける紫外線透過率の最小値が７０％以上であって、背面（基材シート）側から、３４０〜４４０ｎｍの波長領域に発光ピークを有する紫外光を透過させ、粘着剤層面に走光性害虫を誘引・捕獲する上記[１]項に記載の捕虫用粘着シート、及び
［３］粘着剤層の厚さが、１０〜２００μｍである上記[１]又は[２]項に記載の捕虫用粘着シート、
を提供するものである。
As a result of intensive research to develop an insect trapping pressure-sensitive adhesive sheet having the above-mentioned preferable properties, the present inventor has identified a softener having a specific molecular weight as a pressure-sensitive adhesive layer on one surface of the base sheet, and A pressure-sensitive adhesive sheet in which the shear force of the pressure-sensitive adhesive layer in a certain range is provided when the pressure-sensitive adhesive layer surfaces of the pressure-sensitive adhesive sheet are overlapped with each other. The present inventors have found that it can be adapted to the purpose and have completed the present invention based on this finding.
That is, the present invention
[1] On one surface of the substrate sheet, (A) a softening agent having a number average molecular weight of 200 or more and less than 10,000, and 100 parts by mass of (B) a polyolefin system having a number average molecular weight exceeding 500,000 A pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer containing 0.05 to 12 parts by mass of a polymer elastomer, and the shearing force when the pressure-sensitive adhesive layer surfaces of the pressure-sensitive adhesive sheet are overlapped is 5 to 70 N / 35 mm × 35 mm. Insect collecting adhesive sheet,
[2] The minimum value of the ultraviolet transmittance at a wavelength of 340 to 440 nm is 70% or more, and UV light having a light emission peak in the wavelength region of 340 to 440 nm is transmitted from the back surface (base material sheet) side, In the above-mentioned item [1] or [2], wherein the insect-carrying pressure-sensitive adhesive sheet according to the above item [1], which attracts and captures phototactic pests on the layer surface, and [3] the pressure-sensitive adhesive layer has a thickness of 10 to 200 μm. Insect trapping adhesive sheet,
Is to provide.
本発明によれば、基材シートの一方の面に捕虫用の粘着剤層を有し、飛翔性害虫を効率よく捕殺することができると共に、加工性や保存性が良好な捕虫用粘着シート、特に紫外線誘引型の捕虫器に好適に使用し得る紫外線透過性及び耐紫外線劣化性に優れる捕虫用粘着シートを提供することができる。 According to the present invention, the pressure-sensitive adhesive sheet for insect trapping has an adhesive layer for trapping insects on one side of the base sheet, can efficiently kill flying insects, and has good processability and storage stability. In particular, it is possible to provide an insect trapping pressure-sensitive adhesive sheet that is suitable for use in an ultraviolet attracting type insect trap and is excellent in UV transmittance and UV resistance.
本発明の捕虫用粘着シートは、基材シートの一方の面に、（Ａ）数平均分子量が２００以上１万未満である軟化剤と、（Ｂ）数平均分子量が５０万を超えるポリオレフィン系高分子エラストマーを含む粘着剤層を有する粘着シートである。
［基材シート］
本発明の捕虫用粘着シートにおける基材シートの種類に特に制限はないが、紫外線誘引型の捕虫器への適用を考慮して、３４０〜４４０ｎｍの波長領域に発光ピークをもつ紫外光に対する透過性の良好なものが好ましい。例えばポリエチレン樹脂、ポリプロピレン樹脂等のポリオレフィン樹脂、ポリブチレンテレフタレート樹脂、ポリエチレンテレフタレート樹脂などのポリエステル樹脂、ポリスチレン樹脂、塩化ビニル樹脂などのプラスチックのフィルム、シート及びこれらの樹脂の混合物又は積層物からなるプラスチックフィルム、シート等が挙げられる。これらの基材シートは、未延伸でもよいし、縦又は横の一軸方向、あるいは二軸方向に延伸処理されたものであってもよい。さらに、上述した波長領域以外の紫外線吸収剤、光安定剤、酸化防止剤、帯電防止剤、スリップ剤、アンチブロッキング剤などが含有されていてもよい。
The insect trapping pressure-sensitive adhesive sheet of the present invention comprises (A) a softening agent having a number average molecular weight of 200 or more and less than 10,000, and (B) a polyolefin-based high molecular weight having a number average molecular weight exceeding 500,000 on one surface of the base sheet. It is an adhesive sheet having an adhesive layer containing a molecular elastomer.
[Base material sheet]
Although there is no restriction | limiting in particular in the kind of base material sheet in the adhesive sheet for insect traps of this invention, Considering the application to an ultraviolet attracting type insect trap, the transmittance | permeability with respect to the ultraviolet light which has an emission peak in the wavelength range of 340-440 nm Are preferable. For example, polyolefin films such as polyethylene resins and polypropylene resins, polybutylene terephthalate resins, polyester resins such as polyethylene terephthalate resins, plastic films such as polystyrene resins and vinyl chloride resins, sheets, and plastic films made of a mixture or laminate of these resins , Sheets and the like. These substrate sheets may be unstretched, or may be stretched in the longitudinal or lateral uniaxial direction or the biaxial direction. Furthermore, ultraviolet absorbers, light stabilizers, antioxidants, antistatic agents, slip agents, antiblocking agents and the like other than those described above may be contained.
また、当該基材シートは、性能を損なわない範囲内で、その上に設けられる粘着剤層との密着性を向上させるために、所望により酸化法や凹凸化法などの表面処理を施すことができる。上記酸化法としては、特には限定されないが、例えばコロナ放電処理法、クロム酸酸化（湿式）、火炎処理、熱風処理、オゾン・プラズマ照射処理などが挙げられ、また、凹凸化法としては、特には限定されないが、例えばサンドブラスト法、溶剤処理法等が挙げられる。これらの表面処理法は基材シートの種類に応じて適宜選定されるが、一般にはコロナ放電処理法が効果及び操作性などの面から、好ましく用いられる。また、プライマー処理を施すこともできる。
当該基材シートの厚さに特に制限はないが、前記波長領域の紫外線透過性及び適度の剛性などの観点から、通常１０〜２５０μｍ程度、好ましくは２０〜１５０μｍである。
In addition, the base sheet may be subjected to a surface treatment such as an oxidation method or a concavo-convex method, if desired, in order to improve the adhesion with the pressure-sensitive adhesive layer provided on the base sheet as long as the performance is not impaired. it can. The oxidation method is not particularly limited, and examples thereof include corona discharge treatment method, chromic acid oxidation (wet), flame treatment, hot air treatment, ozone / plasma irradiation treatment, etc. Is not limited, and examples thereof include a sand blasting method and a solvent processing method. These surface treatment methods are appropriately selected depending on the type of the base sheet, but generally, a corona discharge treatment method is preferably used from the viewpoints of effects and operability. Moreover, primer treatment can also be performed.
Although there is no restriction | limiting in particular in the thickness of the said base material sheet, From viewpoints, such as the ultraviolet-ray transmittance of the said wavelength range, and moderate rigidity, it is about 10-250 micrometers normally, Preferably it is 20-150 micrometers.
［粘着剤層］
本発明の捕虫用粘着シートにおいて、前記基材シートの一方の面に設けられる粘着剤層は、必須成分として、（Ａ）軟化剤と、（Ｂ）ポリオレフィン系高分子エラストマーを含有する。
（（Ａ）軟化剤）
当該粘着剤層に、必須成分の一つとして用いられる（Ａ）軟化剤は、数平均分子量が２００以上１万未満のものである。この数平均分子量が上記の範囲にあれば、粘着剤に十分な柔軟性を付与することができる。
このような軟化剤としては、数平均分子量が上記の範囲にあり、かつ軟化剤としての機能を有するものであればよく、特に制限されず、例えば重合型軟化剤、鉱物油系軟化剤、植物油系軟化剤、可塑剤などを用いることができる。
前記重合型軟化剤としては、例えばポリブテン、ポリイソブチレン、ブチルゴム、ポリイソプレン、ポリブタジエンなどのポリオレフィン系オリゴマー等が挙げられるが、耐紫外線劣化性などの観点から分子内に不飽和結合を実質上有しないポリブテン及びポリイソブチレンが好ましく、特に飛翔性害虫に対して優れた捕獲能力を示す観点からポリブテンが好適である。
[Adhesive layer]
In the insect trapping pressure-sensitive adhesive sheet of the present invention, the pressure-sensitive adhesive layer provided on one surface of the substrate sheet contains (A) a softening agent and (B) a polyolefin polymer elastomer as essential components.
((A) softener)
The softening agent (A) used as one of the essential components in the pressure-sensitive adhesive layer has a number average molecular weight of 200 or more and less than 10,000. If this number average molecular weight is in the above range, sufficient flexibility can be imparted to the pressure-sensitive adhesive.
Such a softening agent is not particularly limited as long as the number average molecular weight is in the above range and has a function as a softening agent. For example, a polymerization softening agent, a mineral oil softening agent, a vegetable oil System softeners, plasticizers and the like can be used.
Examples of the polymerization type softening agent include polyolefin oligomers such as polybutene, polyisobutylene, butyl rubber, polyisoprene, and polybutadiene, but have substantially no unsaturated bond in the molecule from the viewpoint of UV resistance. Polybutene and polyisobutylene are preferable, and polybutene is particularly preferable from the viewpoint of showing an excellent capturing ability against flying insect pests.
鉱物油系軟化剤としては、例えば流動パラフィン、ホワイトオイルなどが挙げられ、植物油系軟化剤としては、例えばひまし油、綿実油、あまに油、パーム油、大豆油などが挙げられる。
可塑剤としては、例えばフタル酸誘導体、イソフタル酸・テレフタル酸誘導体、テトラヒドロフタル酸誘導体、リン酸誘導体、アジピン酸誘導体、セバシン酸誘導体、アゼライン酸誘導体、クエン酸誘導体、トリメリット酸誘導体、グリコール酸誘導体、グリセリン誘導体などの非重合型可塑剤、ポリエステル、ポリエーテル、アルキド樹脂、トルエンスルホンアミド−ホルムアルデヒド樹脂、ポリ−α−メチルスチレンなどの重合型可塑剤を挙げることができる。
本発明においては、（Ａ）成分の軟化剤として、前記した各種軟化剤を１種用いてもよいし、２種以上を組み合わせて用いてもよいが、後述の（Ｂ）ポリオレフィン系高分子エラストマーとの相溶性が良く、性能に優れる観点から、ポリオレフィン系オリゴマーを用いることが好ましく、前述した理由から、ポリブテンやポリイソブチレンを用いることがより好ましく、特にポリブテンの使用が好ましい。
Examples of mineral oil-based softeners include liquid paraffin and white oil. Examples of vegetable oil-based softeners include castor oil, cottonseed oil, linseed oil, palm oil, and soybean oil.
Examples of plasticizers include phthalic acid derivatives, isophthalic acid / terephthalic acid derivatives, tetrahydrophthalic acid derivatives, phosphoric acid derivatives, adipic acid derivatives, sebacic acid derivatives, azelaic acid derivatives, citric acid derivatives, trimellitic acid derivatives, glycolic acid derivatives. And non-polymerization type plasticizers such as glycerin derivatives, polymerization type plasticizers such as polyester, polyether, alkyd resin, toluenesulfonamide-formaldehyde resin, and poly-α-methylstyrene.
In the present invention, as the softener for the component (A), one of the above-mentioned various softeners may be used, or two or more may be used in combination. From the viewpoint of good compatibility with and excellent performance, it is preferable to use a polyolefin-based oligomer. For the reasons described above, it is more preferable to use polybutene or polyisobutylene, and it is particularly preferable to use polybutene.
（（Ｂ）ポリオレフィン系高分子エラストマー）
当該粘着剤層において、もう一つの必須成分として用いられる（Ｂ）ポリオレフィン系高分子エラストマーは、数平均分子量が５０万を超えるものである。数平均分子量が５０万を超えるものであれば、捕虫用蛍光灯から照射される紫外線によって経時で発生する粘着剤層の劣化に起因する捕虫性の低下を抑えることができ、飛翔性害虫の捕獲性が良好となる。なお、上記数平均分子量は、ゲルパーミエーションクロマトグラフィー（ＧＰＣ）法で測定されるポリスチレン換算の値である。なお、ポリオレフィン系高分子エラストマーの好ましい数平均分子量は５０万を超え、７０万以下、特に好ましくは、５５万〜６５万である。
このようなポリオレフィン系高分子エラストマーとしては、例えばエチレン−プロピレン共重合体、ポリブテン、ポリイソブチレンなどが挙げられ、これらは１種を単独で用いてもよいし、２種以上を組み合わせて用いてもよいが、飛翔性害虫に対して優れた捕獲能力を示す観点から、特にポリブテン及びポリイソブチレンが好適である。
((B) Polyolefin polymer elastomer)
In the pressure-sensitive adhesive layer, the (B) polyolefin polymer elastomer used as another essential component has a number average molecular weight exceeding 500,000. If the number average molecular weight exceeds 500,000, it is possible to suppress a decrease in insect trapping property due to deterioration of the pressure-sensitive adhesive layer caused by ultraviolet rays irradiated from a fluorescent lamp for trapping insects. Property is improved. In addition, the said number average molecular weight is a value of polystyrene conversion measured by a gel permeation chromatography (GPC) method. The preferred number average molecular weight of the polyolefin polymer elastomer is more than 500,000 and 700,000 or less, particularly preferably 550,000 to 650,000.
Examples of such polyolefin polymer elastomer include ethylene-propylene copolymer, polybutene, polyisobutylene, etc., and these may be used alone or in combination of two or more. However, polybutene and polyisobutylene are particularly preferable from the viewpoint of showing an excellent capturing ability against flying insect pests.
本発明においては、当該粘着剤層における（Ｂ）成分のポリオレフィン系高分子エラストマーの含有量は、前記（Ａ）成分の軟化剤１００質量部に対して、０.０５〜１２質量部の範囲である。ポリオレフィン系高分子エラストマーの含有量が０.０５質量部未満であると、捕虫性や剥離シートから粘着シートを剥がす際の粘着剤層中の凝集破壊の発生や、保存安定性の低下が生じ、一方１２質量部を超えると粘着剤層が硬くなり捕虫性が得られない。このポリオレフィン系高分子エラストマーの好ましい含有量は、０.１〜８質量部である。
本発明の捕虫用粘着シートにおける粘着剤層には、本発明の効果が損なわれない範囲で、必要に応じ３４０〜４４０ｎｍの波長領域以外の紫外線吸収剤、光安定剤、酸化防止剤、防腐剤、防錆剤、無機粉末や金属粉末などの充填剤、着色剤等の公知の各種添加剤あるいはフェロモンなどの誘引物質などを含有させることができる。
In the present invention, the content of the polyolefin polymer elastomer as the component (B) in the pressure-sensitive adhesive layer is in the range of 0.05 to 12 parts by mass with respect to 100 parts by mass of the softening agent as the component (A). is there. When the content of the polyolefin polymer elastomer is less than 0.05 parts by mass, the insect trapping property and the occurrence of cohesive failure in the pressure-sensitive adhesive layer when the pressure-sensitive adhesive sheet is peeled off from the release sheet occur, and the storage stability decreases. On the other hand, when the amount exceeds 12 parts by mass, the pressure-sensitive adhesive layer becomes hard and insect trapping properties cannot be obtained. The preferred content of the polyolefin polymer elastomer is 0.1 to 8 parts by mass.
The pressure-sensitive adhesive layer in the insect trapping pressure-sensitive adhesive sheet of the present invention is an ultraviolet absorber other than the wavelength region of 340 to 440 nm, a light stabilizer, an antioxidant, and an antiseptic, as necessary, as long as the effects of the present invention are not impaired. In addition, rust inhibitors, fillers such as inorganic powders and metal powders, various known additives such as coloring agents, and attractants such as pheromones can be included.
（粘着剤層の形成）
次に、基材シートの一方の面に粘着剤層を形成する方法について説明する。
まず、前記の（Ａ）軟化剤と、前記の（Ｂ）ポリオレフィン系高分子エラストマーとを所定の割合で含み、必要に応じて前記の各種添加剤を含む粘着剤組成物を調製する。なお、この粘着剤組成物の調製においては、無溶媒で行ってもよいし、必要に応じ適当な溶媒を適宜含有させることができる。
次に、このようにして調製された粘着剤組成物を、無溶媒の場合はホットメルト化し基材シートの一方の面に塗布、冷却固化して粘着剤層を形成させる。また、粘着剤組成物を溶媒希釈した場合は、基材シートの一方の面に塗布、乾燥して粘着剤層を形成させる。粘着剤組成物を基材シートの一方の面に塗布する方法としては、特に制限はなく、従来公知の塗布装置が使用可能であり、例えば、ナイフコーター、ロールコーター、ロールナイフコーター、エアナイフコーター、バーコーター、ダイコーター、カーテンコーター、グラビアコーター等の塗布装置による方法が挙げられる。
また、別の方法として、後述する剥離シートの剥離処理面に、前記の塗布装置を使用し、粘着剤組成物を塗布して、前記厚さの粘着剤層を形成したのち、この粘着剤層上に基材シートを貼り合わせる方法を用いることもできる。
粘着剤層の厚さは、特に制限はないが、通常１０〜２００μｍであり、好ましくは１５〜１５０μｍであり、より好ましくは２０〜１００μｍである。
(Formation of adhesive layer)
Next, a method for forming the pressure-sensitive adhesive layer on one surface of the base sheet will be described.
First, a pressure-sensitive adhesive composition containing the above-mentioned (A) softener and the above-mentioned (B) polyolefin polymer elastomer in a predetermined ratio and containing the various additives as required is prepared. In addition, in preparation of this adhesive composition, you may carry out without a solvent and can contain a suitable solvent suitably as needed.
Next, the pressure-sensitive adhesive composition thus prepared is hot-melted in the absence of a solvent, and is applied to one surface of the base sheet and cooled and solidified to form a pressure-sensitive adhesive layer. When the pressure-sensitive adhesive composition is diluted with a solvent, the pressure-sensitive adhesive composition is applied to one surface of the substrate sheet and dried to form a pressure-sensitive adhesive layer. The method for applying the pressure-sensitive adhesive composition to one surface of the substrate sheet is not particularly limited, and a conventionally known coating apparatus can be used. For example, a knife coater, a roll coater, a roll knife coater, an air knife coater, Examples thereof include a method using a coating apparatus such as a bar coater, a die coater, a curtain coater, or a gravure coater.
As another method, the pressure-sensitive adhesive layer is formed after the pressure-sensitive adhesive composition is applied to the release-treated surface of the release sheet, which will be described later, by applying the pressure-sensitive adhesive composition to the pressure-sensitive adhesive layer. It is also possible to use a method of laminating a base sheet on top.
Although there is no restriction | limiting in particular in the thickness of an adhesive layer, Usually, it is 10-200 micrometers, Preferably it is 15-150 micrometers, More preferably, it is 20-100 micrometers.
［剥離シート］
このようにして形成された粘着剤層の上に、所望により剥離シートを設けることができる。
前記剥離シートとしては、例えばグラシン紙のような高密度原紙、クレーコート紙、クラフト紙、上質紙などの紙、又はそれらの紙にポリエチレン樹脂などをラミネートしたラミネート紙、あるいはポリエチレンテレフタレート、ポリエチレンナフタレート、ポリオレフィンなどのプラスチックフィルムに、フッ素樹脂やシリコーン樹脂などの剥離剤を乾燥質量で０.１〜３ｇ／ｍ2程度になるように塗布し、熱硬化や紫外線硬化などによって剥離層を設けたものなどが挙げられる。この剥離シートの厚さについては特に制限はないが、通常２５〜２００μｍの範囲である。
[Peeling sheet]
A release sheet can be provided as desired on the pressure-sensitive adhesive layer thus formed.
Examples of the release sheet include high-density base paper such as glassine paper, clay-coated paper, kraft paper, high-quality paper, or laminated paper obtained by laminating polyethylene resin to these paper, or polyethylene terephthalate, polyethylene naphthalate. A release film such as a fluororesin or a silicone resin is applied to a plastic film such as polyolefin so that the dry mass is about 0.1 to 3 g / m 2 , and a release layer is provided by heat curing or ultraviolet curing. Etc. Although there is no restriction | limiting in particular about the thickness of this peeling sheet, Usually, it is the range of 25-200 micrometers.
［捕虫用粘着シート］
本発明の捕虫用粘着シートにおいては、当該粘着シートの粘着剤層面同士を重ね合わせた場合の粘着剤層のせん断力が５〜７０Ｎ／３５ｍｍ×３５ｍｍであることを要す。このせん断力が５Ｎ／３５ｍｍ×３５ｍｍ未満では剥離シート上から粘着シートを剥離する際の粘着剤層の凝集破壊や、粘着剤のしみ出しなどの保存安定性に劣り、一方７０Ｎ／３５ｍｍ×３５ｍｍを超えると捕虫性が悪くなる。好ましいせん断力は８〜６０Ｎ／３５ｍｍ×３５ｍｍである。なお、このせん断力は捕虫用粘着シートを紫外線に曝露する前に測定した値である。
本発明の捕虫用粘着シートは、適当な場所に設置して、飛翔性害虫を捕獲してもよいが、以下に示すように、紫外線誘引型の捕虫器に適用し、走光性害虫を捕獲することが好ましい。
この場合、本発明の捕虫用粘着シートにおける波長３４０〜４４０ｎｍにおける紫外線透過率の最小値が７０％以上であって、背面（基材シート）側から３４０〜４４０ｎｍの波長領域に発光ピークを有する紫外光を透過させ、粘着剤層面に走光性害虫を誘引・捕獲する方法を用いることができる。
前記紫外線透過率が７０％未満では誘虫性が低下し、また紫外線による物性低下が生じやすくなる。該紫外線透過率は８０％以上であることが好ましい。
具体的には、３４０〜４４０ｎｍの波長領域に発光ピークをもつ紫外光を発するタテ型光源をセットした捕虫器の支柱などに本発明の捕虫用シートを粘着剤層が前面側になるように、両面粘着テープなどを用いて装着することにより、走光性害虫を捕獲する。
[Insect trapping adhesive sheet]
In the insect trapping pressure-sensitive adhesive sheet of the present invention, it is necessary that the shearing force of the pressure-sensitive adhesive layer is 5 to 70 N / 35 mm × 35 mm when the pressure-sensitive adhesive layer surfaces of the pressure-sensitive adhesive sheet are overlapped. When this shearing force is less than 5 N / 35 mm × 35 mm, the storage stability such as cohesive failure of the pressure-sensitive adhesive layer when the pressure-sensitive adhesive sheet is peeled off and the pressure-sensitive adhesive ooze out is inferior, while 70 N / 35 mm × 35 mm is reduced. If it exceeds, the insect trapping property becomes worse. A preferable shearing force is 8 to 60 N / 35 mm × 35 mm. The shear force is a value measured before the insect trapping adhesive sheet is exposed to ultraviolet rays.
The insect trapping pressure-sensitive adhesive sheet of the present invention may be installed in an appropriate place to capture flying insects. However, as shown below, the insect trapping adhesive sheet is applied to an ultraviolet attracting insect trap and captures phototactic insects. It is preferable.
In this case, the minimum value of ultraviolet transmittance at a wavelength of 340 to 440 nm in the insect trapping pressure-sensitive adhesive sheet of the present invention is 70% or more, and an ultraviolet having an emission peak in a wavelength region of 340 to 440 nm from the back surface (base material sheet) side. It is possible to use a method of transmitting light and attracting / capturing phototactic pests on the surface of the pressure-sensitive adhesive layer.
If the ultraviolet transmittance is less than 70%, the attracting property is lowered, and the physical properties are easily lowered by ultraviolet rays. The ultraviolet transmittance is preferably 80% or more.
Specifically, the insect trap sheet of the present invention is placed on the front side of the insect trap column and the like, which is a vertical trap light source that emits ultraviolet light having an emission peak in the wavelength region of 340 to 440 nm. By using double-sided adhesive tape, etc., the photo-grown pests are captured.
次に、本発明を実施例により、さらに詳細に説明するが、本発明は、これらの例によってなんら限定されるものではない。
なお、各例で得られた粘着シートの性能を以下に示す方法に従って評価した。
（１）紫外線透過率
粘着シートから剥離シートを剥がし、このサンプルについて、紫外可視分光光度計［島津製作所社製、機種名「ＵＶ−３１０１ＰＣ」］を用いて、波長３４０〜４４０ｎｍの紫外線透過率の最小値を測定した。
（２）剥離性
ＪＩＳ Ｚ ０２３７に準拠して、幅５０ｍｍの粘着シートを剥離シートから、０.１ｍ／ｍｉｎの剥離速度で１８０度方向に剥離した際の剥離シート表面を目視し、以下の基準で評価した。
○：剥離シート上に糊残りがなく、粘着シートが良好に剥離できる。
×：粘着剤層が凝集破壊し、剥離シート上に糊残りがある。
（３−１）紫外線に曝露する前のせん断力(曝露前)
２３℃、５０％ＲＨの環境下で、幅３５ｍｍ、長さ３５ｍｍの粘着シートの基材シート側を両面テープを用いてステンレス鋼板に固定した試料を２つ用意し、その後、剥離シートを剥がしたのち、露出した粘着剤層面同士を重ね合わせ、１９.６Ｎローラーを用いて５往復して貼付した。
貼付３０分後、引張り試験機［オリエンテック社製、機種名「ＵＴＭ−４−１００」］を用いて、ＪＩＳ Ｚ ０２３７に準拠し、速度５０ｍｍ／ｍｉｎの条件でせん断力を測定した。
（３−２）フェード促進試験後のせん断力(フェード促進後)
粘着シートから剥離シートを剥がし、粘着剤層の反対面からフェードメーター試験機［スガ試験機社製、機種名「Ｕ４８」、光源：カーボンアークランプ］を用いて５０時間照射した。その後、２３℃、５０％ＲＨの環境下で、幅３５ｍｍ、長さ３５ｍｍの粘着シートの基材シート側を両面テープを用いてステンレス鋼板に固定した試料を２つ用意し、その後、露出した粘着剤層面同士を重ね合わせ、１９.６Ｎローラーを用いて５往復して貼付した。
貼付３０分後、引張り試験機［オリエンテック社製、機種名「ＵＴＭ−４−１００」］を用いて、ＪＩＳ Ｚ ０２３７に準拠し、速度５０ｍｍ／ｍｉｎの条件でせん断力を測定した。
（４）捕虫性
波長３４０〜４４０ｎｍの波長領域に発光ピークをもつ紫外光を発する蛍光灯をセットしたトーセロパックス(株)製捕虫ポールに、剥離シートを剥がした粘着シートの基材側を、両面粘着テープで貼付し、埼玉県蕨市錦町５−１４−４２の場所に３０日間放置したのち、捕虫数を目視にて観察し、下記の判定基準で評価した。
○：捕獲された虫の数が１００匹以上
×：捕獲された虫の数が１００匹未満
EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by these examples.
In addition, the performance of the adhesive sheet obtained in each example was evaluated according to the method shown below.
(1) Ultraviolet transmittance The release sheet is peeled off from the pressure-sensitive adhesive sheet, and this sample has an ultraviolet transmittance of a wavelength of 340 to 440 nm using an ultraviolet-visible spectrophotometer [manufactured by Shimadzu Corporation, model name “UV-3101PC”]. The minimum value was measured.
(2) Peelability According to JIS Z 0237, the surface of the release sheet when the adhesive sheet having a width of 50 mm was peeled from the release sheet at a peel rate of 0.1 m / min in the 180-degree direction was visually observed, and the following criteria It was evaluated with.
○: There is no adhesive residue on the release sheet, and the adhesive sheet can be peeled well.
X: The pressure-sensitive adhesive layer cohesively breaks, and there is an adhesive residue on the release sheet.
(3-1) Shear force before exposure to ultraviolet light (before exposure)
In an environment of 23 ° C. and 50% RH, two samples were prepared by fixing the base sheet side of the adhesive sheet having a width of 35 mm and a length of 35 mm to the stainless steel plate using a double-sided tape, and then the release sheet was peeled off. After that, the exposed pressure-sensitive adhesive layer surfaces were superposed and pasted 5 times using a 19.6N roller.
30 minutes after sticking, using a tensile tester [Orientec Co., Ltd., model name “UTM-4-100”], the shearing force was measured at a speed of 50 mm / min according to JIS Z0237.
(3-2) Shear force after fading acceleration test (after fading acceleration)
The release sheet was peeled from the pressure-sensitive adhesive sheet, and irradiated from the opposite side of the pressure-sensitive adhesive layer for 50 hours using a fade meter tester [manufactured by Suga Test Instruments Co., Ltd., model name “U48”, light source: carbon arc lamp]. Thereafter, two samples were prepared by fixing the base sheet side of the adhesive sheet having a width of 35 mm and a length of 35 mm to the stainless steel plate using a double-sided tape in an environment of 23 ° C. and 50% RH. The agent layer surfaces were superposed and pasted 5 times using a 19.6N roller.
30 minutes after sticking, using a tensile tester [Orientec Co., Ltd., model name “UTM-4-100”], the shearing force was measured at a speed of 50 mm / min according to JIS Z0237.
(4) Insect catching property The base material side of the adhesive sheet from which the release sheet has been peeled off to the insect trap made by Toselopacs Co., Ltd., which is set with a fluorescent lamp that emits ultraviolet light having an emission peak in the wavelength range of 340 to 440 nm, Affixed with a double-sided adhesive tape and left for 30 days in 5-14-42 Nishiki-cho, Sakai City, Saitama Prefecture, the number of insects was observed visually and evaluated according to the following criteria.
○: The number of captured insects is 100 or more ×: The number of captured insects is less than 100
実施例１
軟化剤としてポリブテン［新日本石油社製、製品名「日石ポリブテン グレードＨＶ−１９００」、数平均分子量：２９００］１００質量部（固形分）とポリオレフィン系高分子エラストマーとしてポリイソブチレン樹脂［ＢＡＳＦ社製、製品名「オパノールＢ２００Ｎ」、数平均分子量：６０００００］１質量部（固形分）を混合して粘着剤組成物を得た。この粘着剤組成物をグラシン紙の片面にシリコーン処理された剥離シート上に、ダイコーターにより厚さが３０μｍになるようにホットメルト塗布し、厚さ３８μｍのポリエチレンテレフタレート（ＰＥＴ）フィルム［東レ社製、商品名「ルミラー」］に貼り合わせて粘着シートを作製した。この粘着シートについて、せん断力、紫外線透過性、剥離性、捕虫性について評価した。その結果を第１表に示す。
Example 1
Polybutene as a softener [manufactured by Nippon Oil Corporation, product name “Nisseki Polybutene Grade HV-1900”, number average molecular weight: 2900] 100 parts by mass (solid content) and polyisobutylene resin [manufactured by BASF as a polyolefin polymer elastomer] , Product name “Opanol B200N”, number average molecular weight: 600000] 1 part by mass (solid content) was mixed to obtain an adhesive composition. This pressure-sensitive adhesive composition was hot-melt coated onto a release sheet treated with silicone on one side of glassine paper with a die coater to a thickness of 30 μm, and a polyethylene terephthalate (PET) film with a thickness of 38 μm [manufactured by Toray Industries, Inc. The product was bonded to a trade name “Lumilar”] to prepare an adhesive sheet. This adhesive sheet was evaluated for shearing force, ultraviolet ray permeability, peelability, and insect trapping property. The results are shown in Table 1.
実施例２
実施例１において、軟化剤としてポリブテン［新日本石油社製、製品名「日石ポリブテン グレードＬＶ−２５」、数平均分子量：３９０］１００質量部（固形分）を用いた以外は、実施例１と同様に実施して粘着シートを作製し、性能評価を行った。その結果を第１表に示す。
実施例３
実施例１において、ポリオレフィン系高分子エラストマーを０.１質量部（固形分）用いた以外は、実施例１と同様に実施して粘着シートを作製し、性能評価を行った。その結果を第１表に示す。
実施例４
実施例１において、軟化剤としてポリブテン［新日本石油社製、製品名「日石ポリブテン グレードＨＶ-１９００、数平均分子量：２９００］８０質量部（固形分）と、ポリイソブチレン［ＢＡＳＦ社製、製品名「オパノールＢ１０Ｎ、数平均分子量：９０００］２０質量部（固形分）との混合物を用いた以外は、実施例１と同様に実施して粘着シートを作製し、性能評価を行った。その結果を第１表に示す。
Example 2
Example 1 except that 100 parts by mass (solid content) of polybutene [manufactured by Nippon Oil Co., Ltd., product name “Nisseki Polybutene Grade LV-25”, number average molecular weight: 390] was used as the softening agent in Example 1. In the same manner as described above, a pressure-sensitive adhesive sheet was prepared and performance evaluation was performed. The results are shown in Table 1.
Example 3
In Example 1, except that 0.1 part by mass (solid content) of the polyolefin-based polymer elastomer was used, an adhesive sheet was produced in the same manner as in Example 1, and performance evaluation was performed. The results are shown in Table 1.
Example 4
In Example 1, 80 parts by mass (solid content) of polybutene [manufactured by Nippon Oil Corporation, product name “Nisseki Polybutene Grade HV-1900, number average molecular weight: 2900] as a softener and polyisobutylene [manufactured by BASF, product A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that a mixture with the name “Opanol B10N, number average molecular weight: 9000” 20 parts by mass (solid content) was used, and performance evaluation was performed. Is shown in Table 1.
比較例１
実施例１において、ポリオレフィン系高分子エラストマーとしてポリイソブチレン［ＢＡＳＦ社製、製品名「オパノールＢ１５０Ｎ、数平均分子量：４２５０００］を３質量部（固形分）用いた以外は、実施例１と同様に実施して粘着シートを作製し、性能評価を行った。その結果を第１表に示す。
Comparative Example 1
The same procedure as in Example 1 was performed except that 3 parts by mass (solid content) of polyisobutylene [manufactured by BASF, product name “Opanol B150N, number average molecular weight: 425000] was used as the polyolefin polymer elastomer in Example 1. A pressure-sensitive adhesive sheet was prepared and performance evaluation was performed, and the results are shown in Table 1.
比較例２
実施例１において、ポリオレフィン系高分子エラストマーとしてポリイソブチレン樹脂［ＢＡＳＦ社製、製品名「オパノールＢ２００Ｎ」、数平均分子量：６０００００］を１５質量部（固形分）用いた以外は、実施例１と同様に実施して粘着シートを作製し、性能評価を行った。その結果を第１表に示す。
比較例３
実施例１において、ポリオレフィン系高分子エラストマーとしてポリイソブチレン樹脂［ＢＡＳＦ社製、製品名「オパノールＢ２００Ｎ」、数平均分子量：６０００００］を０.０１質量部（固形分）用いた以外は、実施例１と同様に実施して粘着シートを作製し、性能評価を行った。その結果を第１表に示す。
比較例４
実施例１において、ポリオレフィン系高分子エラストマーとしてポリイソブチレン［ＢＡＳＦ社製、製品名「オパノールＢ１５Ｎ、数平均分子量：２２０００］を１質量部（固形分）用いた以外は、実施例１と同様に実施して粘着シートを作製し、性能評価を行った。その結果を第１表に示す。
Comparative Example 2
Example 1 is the same as Example 1 except that 15 parts by mass (solid content) of polyisobutylene resin [manufactured by BASF, product name “Opanol B200N”, number average molecular weight: 600000] is used as the polyolefin-based polymer elastomer. The pressure-sensitive adhesive sheet was prepared and evaluated for performance. The results are shown in Table 1.
Comparative Example 3
Example 1 except that 0.01 parts by mass (solid content) of polyisobutylene resin [manufactured by BASF, product name “Opanol B200N”, number average molecular weight: 600000] was used as the polyolefin-based polymer elastomer in Example 1. In the same manner as described above, a pressure-sensitive adhesive sheet was prepared and performance evaluation was performed. The results are shown in Table 1.
Comparative Example 4
The same procedure as in Example 1 was performed except that 1 part by mass (solid content) of polyisobutylene [manufactured by BASF, product name “Opanol B15N, number average molecular weight: 22000] was used as the polyolefin polymer elastomer in Example 1. A pressure-sensitive adhesive sheet was prepared and performance evaluation was performed, and the results are shown in Table 1.
本発明の粘着シート（実施例１〜４）は、いずれも、紫外線曝露前及びフェード促進試験後のせん断力が５〜７０Ｎ／３５ｍｍ×３５ｍｍの範囲内にあり、紫外線透過率が７０％を超え、剥離性がよく、紫外線劣化性に優れかつ捕虫性に優れ、総合評価で合格である。
これに対し、比較例１は、紫外線曝露前のせん断力が５〜７０Ｎ／３５ｍｍ×３５ｍｍの範囲内にあり、剥離性は良いものの、フェード促進試験後のせん断力は３.５Ｎ／３５ｍｍ×３５ｍｍで、５Ｎ／３５ｍｍ×３５ｍｍ未満であり、紫外線による劣化が大きく、長期間の使用が困難である。また捕虫性が×であって、総合評価で不合格である。
比較例２〜４は、いずれも紫外線曝露前のせん断力が、５〜７０Ｎ／３５ｍｍ×３５ｍｍの範囲を逸脱しており、捕虫性は×であって、総合評価で不合格である。また、比較例２は、フェード促進試験後のせん断力の低下が大きく、紫外線による劣化度が激しい。
As for the adhesive sheet (Examples 1-4) of this invention, all have the shear force in the range of 5-70N / 35mmx35mm before an ultraviolet exposure and a fade acceleration test, and an ultraviolet-ray transmittance exceeds 70%. It has good releasability, is excellent in UV deterioration property, is excellent in insect trapping properties, and is passed in the overall evaluation.
On the other hand, in Comparative Example 1, the shear force before exposure to ultraviolet rays is in the range of 5 to 70 N / 35 mm × 35 mm, and the peelability is good, but the shear force after the fading acceleration test is 3.5 N / 35 mm × 35 mm. Therefore, it is less than 5N / 35 mm × 35 mm, is greatly deteriorated by ultraviolet rays, and is difficult to use for a long time. Moreover, the insect trapping property is x, and the overall evaluation is unacceptable.
In each of Comparative Examples 2 to 4, the shearing force before exposure to ultraviolet rays deviates from the range of 5 to 70 N / 35 mm × 35 mm, the insect trapping property is ×, and the overall evaluation is unacceptable. Moreover, the comparative example 2 has a large fall of the shear force after a fade acceleration test, and the deterioration degree by an ultraviolet-ray is intense.
本発明の捕虫用粘着シートは、基材シートの一方の面に捕虫用の粘着剤層を有し、飛翔性害虫を効率よく捕殺し得ると共に、加工性や保存性が良好であり、しかも紫外線透過性及び耐紫外線劣化性に優れ、特に紫外線誘引型の捕虫器に好適に使用することができる。 The insect trapping pressure-sensitive adhesive sheet of the present invention has a trapping pressure-sensitive adhesive layer on one side of the substrate sheet, can efficiently kill flying pests, has good workability and storage stability, and has an ultraviolet ray. It is excellent in transparency and UV resistance, and can be suitably used particularly for an ultraviolet attracting type insect trap.
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| JPS63215784A (en) * | 1987-03-03 | 1988-09-08 | Idemitsu Petrochem Co Ltd | Tacky agent |
| JPH09143443A (en) * | 1995-11-22 | 1997-06-03 | Nitto Denko Corp | Tacky agent and tacky catching tool |
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