JP5854362B1 - Insect trapping film and method for producing the same - Google Patents

Abstract

The present invention relates to a light-attracting type insect trap 1 that is excellent in insect trapping properties, is resistant to liquid dripping and can be stored for a long period of time, and is easy to peel off and has excellent usability. A film 27 is provided. An adhesive film 27 is used in which a pressure-sensitive adhesive 25 is applied on one side of a transparent film 23 that has been subjected to corona discharge treatment, and is installed in a trapping device 1 in a substantially vertical direction. The pressure-sensitive adhesive 25 has a polybutene having an average molecular weight of 2600 or more and a phenoxy resin having a weight average molecular weight of 40000 or more. The phenoxy resin is added in an amount of 4 to 15 parts by weight with respect to 100 parts by weight of polybutene. In the adhesive film 27, an adhesive 25 is applied to a transparent film 23 made of PET at 10 g / m 2 or more and less than 50 g / m 2. [Selection] Figure 1

Description

  The present invention relates to an insect trapping adhesive film capable of efficiently capturing flying insects such as flies and a method for producing the same.

  Conventionally, fly paper has been used to control flying insects such as flies. This fly paper is made by impregnating a base material such as kraft paper with a dark brown adhesive using rosin and castor oil as raw materials. It was installed and used in a high place.

  This insect trapping method using fly paper has the disadvantage that there is no problem of environmental pollution compared to the method of spraying an insecticide and the safety to the human body is high, but the trapping efficiency of flying insects is low. That is, there is no means for attracting flying pests to fly paper.

  Various measures have been taken to attract flying pests as countermeasures, but among these methods, the development of light-attracting insect traps that focus on the habit of flying pests, which are phototaxis, has become an active force. (Patent Documents 1 to 5). These insect traps are made by applying fluorescent lamps and adhesives such as rubber polymer elastomers such as butyl rubber and polyolefin polymer elastomers such as polybutene to a transparent film to efficiently capture flying insects. can do.

Japanese Utility Model Publication No. 1-149960 Japanese Utility Model Publication No. 2-331474 Utility Model Registration No. 3023917 Japanese Patent Application Laid-Open No. 2005-330412 JP 2008-142021 A

  However, when an adhesive film in which the adhesive described in Patent Document 1 to Patent Document 5 described above is applied to a transparent film is used, it is easy to cause dripping of the adhesive when installed in a substantially vertical direction. There was a problem with sex.

  That is, in an adhesive film installed in a substantially vertical direction, the adhesive gradually flows downward due to gravity, the thickness of the adhesive layer becomes thin and the insect repellent performance deteriorates, and the surrounding environment is soiled by dripping. There was a problem that. Once dripping occurs and adheres to the surrounding floor or the like, it is difficult to sufficiently remove rubber polymer elastomers such as butyl rubber and polyolefin polymer elastomers such as polybutene unless an organic solvent such as toluene is used. There was a problem.

  In particular, when the pressure-sensitive adhesive described in Patent Document 3 is used, liquid dripping is likely to occur due to low cohesive force, and in an environment at a temperature of 5 ° C. to 20 ° C., leaching from the film end surface occurs, The release paper was difficult to peel off and there were problems with storage and usability.

  On the other hand, when the pressure-sensitive adhesive described in Patent Document 5 is used, the cohesive force is high from the viewpoint of the pour point and softening point of this pressure-sensitive adhesive component, so that dripping is less likely to occur, but the trapping property is reduced. Had problems.

  The present invention aims to solve the above-described problems, and is a translucent adhesive film used for a light-attracting type insect trap, has excellent insect trapping properties, and does not easily cause dripping of the adhesive. An object of the present invention is to provide an adhesive film that can be stored for a long period of time and is easy to peel off the release paper and has excellent usability.

  The present invention can provide an adhesive film excellent in insect trapping property, storage property and usability.

The invention described in claim 1
A translucent adhesive film used in a light attracting insect trap,
The adhesive film is
Adhesive is applied to at least one side of the transparent film, and is used by being installed in the vertical direction on the insect trap,
The pressure-sensitive adhesive has polybutene and phenoxy resin,
The polybutene has an average molecular weight of 2600 or more,
The phenoxy resin is
A weight average molecular weight of 40,000 or more,
4 parts by weight or more and less than 15 parts by weight is added with respect to 100 parts by weight of the polybutene.

  When the invention described in claim 1 is used, an adhesive film excellent in insect trapping property, storage property and usability can be provided.

The invention described in claim 2 is the invention described in claim 1,
The transparent film is
The surface to which the adhesive is applied is subjected to corona discharge treatment.

  When the invention described in claim 2 is used, the adhesion between the transparent film and the pressure-sensitive adhesive is improved, so that dripping during use can be further prevented.

The invention described in claim 3 is the invention described in claim 1 or 2,
The adhesive is
The transparent film is coated with 10 g / m 2 or more and less than 50 g / m 2.

  When the invention described in claim 3 is used, insect trapping property, storage property, usability and the like can be further improved.

The invention according to claim 4
A method for producing a translucent adhesive film used in a light attracting insect trap,
The adhesive film is
It is used to be installed in a substantially vertical direction on the insect trap,
After the adhesive is applied to at least one side of the transparent film, heated and dried, a release paper having peelability is pasted,
The adhesive is
A polybutene having an average molecular weight of 2600 or more is dissolved by adding a solvent and stirring to prepare a 70-85 wt% polybutene solution,
To a powdered phenoxy resin having a weight average molecular weight of 40,000 or more, a solvent was added and dissolved by stirring to prepare a 35-50% by weight phenoxy resin solution,
The polybutene solution and the phenoxy resin solution are mixed, and the primary alcohol is added and stirred,
4 parts by weight or more and less than 15 parts by weight of the phenoxy resin is added to 100 parts by weight of the polybutene.

  When the invention described in claim 4 is used, it is possible to provide a method for producing a pressure-sensitive adhesive film that is excellent in catching property, storage property and usability, and is easy to produce and easy to produce.

The invention described in claim 5 is the invention described in claim 4,
The solvent used for the polybutene is:
At least one member of the group consisting of benzene, toluene, xylene, ethylbenzene,
The solvent used for the phenoxy resin is
Methyl ethyl ketone,
The primary alcohol is
20 parts by weight or more and less than 50 parts by weight are added to 100 parts by weight of methyl ethyl ketone.

  By using the invention described in claim 5, it is possible to provide a method for producing a pressure-sensitive adhesive in which polybutene and phenoxy resin are completely dissolved.

  When using the present invention, it is a translucent adhesive film used in a light-attracting insect trap, has excellent insect trapping properties, and does not cause dripping of the adhesive, and can be stored for a long time. In addition, it is possible to provide an adhesive film that is easy to peel off the release paper and has excellent usability.

It is the schematic of the insect trap plate 9. FIG.

          (A) It is a perspective view.

(B) It is sectional drawing of A part.
1 is a schematic structural diagram of an insect trap 1. FIG.

          (A) It is a schematic diagram of the inside.

(B) It is the schematic of the installation method of the insect trap board 9. FIG.
1 is a schematic view of an insect trap 1. FIG. It is a manufacturing-process figure of an adhesive film.

Hereinafter, the insect trapping adhesive film according to the present invention and the production method thereof will be described in detail (FIGS. 1 to 4).
1. Insect catcher The schematic of the insect catcher 1 using the adhesive film 27 in connection with this invention is shown in FIG. This insect trap 1 is a schematic diagram of “trade name: Torunder Z” manufactured by Kikusui Development Co., Ltd., the applicant of the present application.

  The insect trap 1 has a substantially rectangular parallelepiped shape that is vertically long and has a large number of crevice-shaped gaps 5 on the front plate 3 for invading flying insect pests (see FIG. 3). A handle 7 for facilitating carrying is attached to the upper part of the insect trap 1.

  This insect trap 1 is a light-attracting type focusing on the habit of light-flying pests and has a fluorescent lamp 11 inside (FIG. 2). The light source for catching insects is not particularly limited, but it is preferable to use a fluorescent lamp 11 for catching insects that generates a relatively large amount of near-ultraviolet region preferred by flying insects. Further, the shape and arrangement direction of the fluorescent lamp 11 are not particularly limited, but are preferably rod-like and installed in a substantially vertical direction.

  In this example, “Fluorescent lamp FL40S / BL type for insect trap” manufactured by Toshiba Lighting & Technology Co., Ltd. was used as the fluorescent lamp 11. This fluorescent lamp 11 emits near ultraviolet rays having a peak wavelength of 352 nm.

  In the front part of the insect trap 1, a pair of insect catching plate grooves 15 a and b for slidingly inserting the insect catching plate 9 in a vertical direction and a pair of front plate grooves 17 a and b for slidingly inserting the front plate 3. Are formed (FIGS. 2A and 2B). The insect trapping efficiency can be increased by installing the insect trapping adhesive film 27 according to the present invention in the substantially vertical direction on the front surface of the fluorescent lamp 11.

  The insect trap plate 9 is obtained by fixing an adhesive film 27 to a resin frame plate 21 by adhesion or ultrasonic welding. An adhesive 25 is applied to at least one surface of the adhesive film 27, and a release paper 29 is pasted thereon (FIG. 1). The release paper 29 is pasted after the adhesive film 27 in which the adhesive 25 is applied to the transparent film 23 is heated to evaporate the solvent.

  The release paper 29 is made of craft paper, glassine paper, high-quality paper or the like as a base material. The surface of the release paper 29 facing the adhesive 25 is laminated with polyethylene so that it can be easily peeled, coated with silicon resin, or on the surface of a plastic film such as a polyethylene terephthalate film or a polypropene film. A release layer (not shown) coated with silicon resin is formed.

The thickness of the release paper 29 is not particularly limited, but a range of 25 μm to 150 μm is usually convenient and economically preferable. In this example, the product name “SS · 64BOX” manufactured by Shinomura Chemical Co., Ltd., whose surface was siliconized, was used as the release paper 29.
2. Transparent film The insect trap 1 is a light-attracting type that focuses on the behavior of insects' phototaxis, and it is preferable to use a transparent film with high transmittance. In addition, since the fluorescent lamp 11 to be used emits near-ultraviolet rays, it is preferable that the fluorescent lamp 11 is not easily deteriorated by the light having a short wavelength.

  The UV transparent transparent film 23 used in the present invention has a thickness of about 50 μm, for example, and has an ultraviolet transmittance (transmittance at a wavelength of 330 nm) of 40% or more, preferably 50% or more, more preferably. Is preferably 60% or more. For example, a polyolefin film such as a polyethylene film, a polypropylene film, or a poly-4-methylpentene-1 film is preferable. In addition, a uniaxially or biaxially stretched polyolefin film such as a polyethylene terephthalate film, a polybutylene terephthalate film, a polyvinylidene chloride film, a polycarbonate film, a polyamide film, or the like is preferable.

  These resin-made transparent films may be a single-layer film or a laminated film of the same or different films. Among these, a biaxially stretched polypropylene film and a polyethylene terephthalate film are particularly preferable. The thickness of the resin film is preferably 20 to 200 μm, more preferably 30 to 100 μm, because it is easy for ultraviolet rays to pass through and appropriate rigidity is required to facilitate handling. is there.

  The transparent film 23 may be added with an ultraviolet absorber, an antistatic agent, an antioxidant, a slip agent, an antiblock agent, or the like.

  The transparent film 23 is preferably subjected to a surface treatment for improving the adhesive force to the pressure-sensitive adhesive 25. Examples of the surface treatment include corona discharge treatment, flame treatment, plasma treatment, ozone treatment, and sandblast treatment. When the transparent film 23 subjected to these surface treatments was used, the adhesion with the adhesive 25 was improved, and it was found that liquid dripping during use can be further prevented.

In this example, as the transparent film 23, a transparent film 23 made of polyethylene terephthalate (trade name “Toyobo Ester Film A4300” manufactured by Toyobo Co., Ltd., thickness 50 μm. In the following examples, polyethylene terephthalate is simply referred to as PET. )) Was used after corona discharge treatment was performed on one side (the surface to which the adhesive was applied).
3. Adhesive The adhesive 25 according to the present invention is characterized by using polybutene, which is a polyolefin polymer elastomer, and phenoxy resin, which is an epoxy resin, as essential components. The present invention provides a pressure-sensitive adhesive 25 having excellent storability and usability, which will be described later, while securing sufficient insect trapping property with polybutene and improving cohesion with a phenoxy resin.

To this adhesive 25, an attractant suitable for flying pests such as an ultraviolet absorber, a heat stabilizer, a leveling agent, a coloring agent, an insecticide, and a pheromone can be added separately.
(1) Polybutene As polybutene, it turned out that a thing with an average molecular weight (Mn) of 2600 or more is preferable so that it may mention later. For example, those having an average molecular weight (Mn) of 2650 (Nippon Polybutene 200N) manufactured by NOF Corporation and those having an average molecular weight (Mn) of 2900 manufactured by JX Nippon Oil & Energy Corporation (Nisseki Polybutene HV1900) are available. It turned out to be preferable.

  Here, when polybutene having an average molecular weight (Mn) of less than 2600, for example, an average molecular weight (Mn) of 1400 (Nisseki polybutene HV300) is used, although trapping efficiency is good, It was found that the leaching was large and the storage property was inferior, and the film forming property at the time of coating was problematic.

It has been found that the use of polybutene having an average molecular weight (Mn) of 3200 or more is not preferable because of poor adhesion.
(2) Phenoxy resin It turned out that a thing with a weight average molecular weight (MW) of 40000 or more is preferable as a phenoxy resin so that it may mention later. In addition, it turned out that any of bisphenol A type phenoxy resin, bisphenol F type phenoxy resin, and those copolymerization types can be used if the weight average molecular weight (MW) is 40000 or more.

  Examples of the phenoxy resin having a weight average molecular weight (MW) of 40000 or more include “Phenotote FX316” having a weight average molecular weight (MW) of 40000 to 60000 and “Phenototo YP70 having a weight average molecular weight (MW) of 40000 to 60000. ”,“ Phenotote YP50 ”of 60000-80000,“ 50,000 ”JER1256,“ JER4250 ”having a weight average molecular weight (MW) of 60000, and the like can be used.

Use of a phenoxy resin having a weight average molecular weight (MW) of 90000 or more is not preferable because the resin solution becomes unstable and phase separation is difficult to be applied, and it becomes cloudy and light does not easily pass through. I understood.
(3) Mixing of polybutene and phenoxy resin As will be described later, the amount of phenoxy resin added is preferably 4 parts by weight or more and less than 15 parts by weight with respect to 100 parts by weight of polybutene. When the added amount of phenoxy resin is less than 4 parts by weight with respect to 100 parts by weight of polybutene, the effect of improving the cohesive force by the phenoxy resin is not sufficient, and the dripping and leaching of the adhesive increases and storage It was found that there was a problem with the sex and usability.

On the other hand, it was found that when the amount of phenoxy resin added was 15 parts by weight or more, the cohesive force became too high and the insect trapping property of the pressure-sensitive adhesive was lowered, which was not preferable. That is, it was found that the addition of phenoxy resin imparts so-called cohesiveness to the pressure-sensitive adhesive, and there exists an optimum range.
(4) Solvent As a solvent for the pressure-sensitive adhesive, (a) at least one kind selected from the group consisting of benzene, toluene, xylene and ethylbenzene, (b) ketones such as methyl ethyl ketone, (c) methyl alcohol which is a primary alcohol, Ethyl alcohol, propyl alcohol, butyl alcohol, etc. can be used.

  Group (a) acts as a good solvent for polybutene. Group (b) acts as a good solvent for the phenoxy resin. The ratio of the group (a) to the group (b) is preferably changed as appropriate depending on the type of coating apparatus that is a subsequent process.

  In addition, when the addition amount of a phenoxy resin increases, there exists a tendency for complete melt | dissolution to become difficult. In such a case, for example, it is preferable to add 20 parts by weight or more and less than 50 parts by weight of the primary alcohol to 100 parts by weight of methyl ethyl ketone.

  When the added amount of phenoxy resin is increased, the phenoxy resin may not be sufficiently dissolved when the added amount of primary alcohol is less than 20 parts by weight with respect to 100 parts by weight of methyl ethyl ketone. On the other hand, when the amount of primary alcohol added is 50 parts by weight or more with respect to 100 parts by weight of methyl ethyl ketone, the pressure-sensitive adhesive solution is easily separated, which is not preferable. Therefore, it was found that the more preferable range of the primary alcohol addition amount relative to 100 parts by weight of methyl ethyl ketone is 30 parts by weight or more, and more preferably less than 40 parts by weight.

By using the above-mentioned solvent, it is possible to provide a pressure-sensitive adhesive in which polybutene and phenoxy resin are completely dissolved.
4). Manufacturing process of pressure-sensitive adhesive and pressure-sensitive adhesive film An embodiment of the manufacturing process of pressure-sensitive adhesive and pressure-sensitive adhesive film will be described with reference to FIG. 4, but the present invention is not limited to this manufacturing process.

  Toluene is added as a solvent to the elutriated polybutene, and dissolved by stirring to prepare a 70-85 wt% polybutene solution. Methyl ethyl ketone as a solvent is added to the powdered phenoxy resin and dissolved by stirring to prepare a 35-50 wt% phenoxy resin solution. These solutions are mixed, a primary alcohol, for example, ethyl alcohol, is added and stirred to prepare a solution of the adhesive 25 (FIG. 4). It was found that when the solution of the pressure-sensitive adhesive 25 was prepared by this procedure, it was easy to produce and easy to manufacture, and a solution of the pressure-sensitive adhesive 25 in which polybuden and phenoxy resin were completely dissolved could be provided.

  This adhesive 25 solution was applied to a transparent film made of PET (trade name “Toyobo Ester Film A4300” manufactured by Toyobo Co., Ltd., thickness 50 μm) using a bar coater type coating machine, and then dried. The solvent was volatilized at (maximum temperature: 115 ° C.) to provide a layer of adhesive 25 having a thickness of 25 g / m 2 (FIG. 4). Thereafter, release paper 29 (Shinomura Chemical Co., Ltd. release paper, trade name “SS · 64BOX”) was pasted on the 25 layers of the adhesive.

  As a method of applying the solution of the adhesive 25, after diluting to an appropriate solution viscosity with an organic solvent such as toluene, a brush coating method, a gravure roll coating method, a reverse roll coating method, a curtain coating method, a bar coating method, a die coating method A coating method or the like can also be used.

  The method of heating the adhesive 25 after coating and volatilizing the organic solvent used as the solvent is not particularly limited, but a hot air drying furnace or infrared irradiation furnace capable of raising the temperature to 50 ° C. to 150 ° C. or those Can be used.

The coating mass of the adhesive 25 is preferably 10 g / m 2 or more and less than 50 g / m 2, and more preferably 15 g / m 2 or more and less than 30 g / m 2 in consideration of insect trapping property, storage property, usability and the like.
5. Test Method In Examples and Comparative Examples described later, the pressure-sensitive adhesive film 27 produced according to the method described below was tested.
(1) Insect capturing property As the insect capturing device 1, “trade name: Torunder Z” manufactured by Kikusui Development Co., Ltd. was used. The produced adhesive film 29 for trapping insects is affixed to a predetermined position of the trapping board 9 and fixed, peeled off the release paper 29 and attached to the trap 1 (FIGS. 1 to 3), and installed in the warehouse front room. The fluorescent lamp 11 was lit continuously for 15 days. Thereafter, the number of flying insect pests per unit area was visually counted and evaluated according to the following criteria.

  (Double-circle): It is the same number of insects as the comparative example 1.

  ○: The number of insects is about half that of Comparative Example 1.

X: About 30% of the number of insects of Comparative Example 1.
(2) Storage property The insect trap plate 9 which the adhesive film 29 has was installed in the insect trap 1 mentioned above, and environmental temperature kept at 20-35 degreeC for 15 days. Then, it was judged whether the adhesive 25 dripped from the end surface of the adhesive film 27 by visual observation.

  ◯: When the liquid has not dripped.

X: When dripping.
(3) Usability The pressure-sensitive adhesive film 27 with the release sheet attached is cut into a size having a width of 100 mm and a length of 300 mm, and the substrate surface side (the surface on which the pressure-sensitive adhesive 25 does not exist) is 1.5 mm thick. Secure to the plastic plate with double-sided tape. Then, the side of the release paper 29 having a width of 100 mm was manually pulled and pulled in the direction of 90 degrees. And the adhesion amount of the adhesive which adhered to the release paper 29 was observed visually, and the following criteria evaluated.

  (Double-circle): The adhesion amount of the adhesive was comparable or less than the comparative example 2, and it was able to peel smoothly.

  ○: Although the adhesion amount of the adhesive was larger than that of Comparative Example 2, it was able to be peeled off smoothly.

X: The adhesion amount of the pressure-sensitive adhesive is about the same as that of Comparative Example 1, and smooth peeling cannot be performed.
<Example 1>
In Example 1, the adhesive 25 was produced with the following composition. The polybutene having an average molecular weight (Mn) of 2900 (Nisseki Polybutene HV1900) manufactured by JX Nippon Mining & Energy Corporation is 100 parts by weight, and the weight average molecular weight (MW) manufactured by Nippon Steel & Sumikin Chemical Co., Ltd. as a phenoxy resin. ) Was added 5 parts by weight of “Phenotote YP50” having 60000-80000.

To 100 parts by weight of polybutene, 25 parts by weight of toluene manufactured by Kanto Chemical Co., Ltd. as a solvent for polybutene, 20 parts by weight of methyl ethyl ketone manufactured by Wako Pure Chemical Industries, Ltd. as a solvent for phenoxy resin, and after mixing them, 4 parts by weight of ethyl alcohol manufactured by Kojun Co., Ltd. was added (FIG. 4).
<Example 2>
In Example 2, the adhesive 25 was produced with the following composition. The polybutene having an average molecular weight (Mn) of 2900 manufactured by JX Nippon Oil & Energy Corporation (Nisshi Polybutene HV1900) is 100 parts by weight, and the weight average molecular weight (MW) manufactured by Mitsubishi Chemical is 60000 as a phenoxy resin. 8 parts by weight of “JER4250” was added.

To 100 parts by weight of polybutene, 25 parts by weight of toluene manufactured by Kanto Chemical Co., Ltd. as a solvent for polybutene, 20 parts by weight of methyl ethyl ketone manufactured by Wako Pure Chemical Industries, Ltd. as a solvent for phenoxy resin, and after mixing them, 7 parts by weight of ethyl alcohol manufactured by Kojun Co., Ltd. was added (FIG. 4).
<Example 3>
In Example 3, the adhesive 25 was produced with the following composition. The polybutene having an average molecular weight (Mn) of 2900 manufactured by JX Nippon Oil & Energy Corporation (Nisshi Polybutene HV1900) is 100 parts by weight, and the weight average molecular weight (MW) manufactured by Nippon Steel & Sumikin Chemical Co., Ltd. as a phenoxy resin. 12 parts by weight of “Phenotote YP70” having a weight of 50,000 to 60,000 was added.

To 100 parts by weight of polybutene, 25 parts by weight of toluene manufactured by Kanto Chemical Co., Ltd. as a solvent for polybutene, 25 parts by weight of methyl ethyl ketone manufactured by Wako Pure Chemical Industries, Ltd. as a solvent for phenoxy resin, and after mixing them, 12 parts by weight of ethyl alcohol manufactured by Kojun Co., Ltd. was added (FIG. 4).
<Example 4>
In Example 4, the adhesive 25 was produced with the following composition. A polybutene having an average molecular weight (Mn) of 2650 (Nippon Polybutene 200N) manufactured by Nippon Oil Corporation has a weight average molecular weight (MW) of 50,000 to 50,000 as a phenoxy resin. 13 parts by weight of 60000 “Phenototope YP70” was added.

25 parts by weight of xylene made by Kanto Chemical Co., Ltd. as a solvent for polybutene and 25 parts by weight of methyl ethyl ketone made by Wako Pure Chemical Industries, Ltd. as a solvent for phenoxy resin are added to 100 parts by weight of polybutene. 10 parts by weight of ethyl alcohol manufactured by Kojun Co., Ltd. was added (FIG. 4).
<Example 5>
In Example 5, the adhesive 25 was produced with the following composition. The polybutene having an average molecular weight (Mn) of 2900 manufactured by JX Nippon Oil & Energy Corporation (Nisshi Polybutene HV1900) is 100 parts by weight, whereas the weight average molecular weight (MW) of Mitsubishi Chemical Corporation is 60000. 8 parts by weight of “JER4250” was used.

To 100 parts by weight of polybutene, 25 parts by weight of toluene manufactured by Kanto Chemical Co., Ltd. as a solvent for polybutene, 20 parts by weight of methyl ethyl ketone manufactured by Wako Pure Chemical Industries, Ltd. as a solvent for phenoxy resin, and after mixing them, 7 parts by weight of propyl alcohol manufactured by Kojunyaku Co., Ltd. was added.
<Example 6>
In Example 6, the adhesive 25 was produced with the following composition. The polybutene having an average molecular weight (Mn) of 2900 manufactured by JX Nippon Oil & Energy Corporation (Nisshi Polybutene HV1900) is 100 parts by weight, whereas the weight average molecular weight (MW) manufactured by Mitsubishi Chemical Corporation is used as the phenoxy resin. 80000 parts by weight of 60000 “JER4250” was added.

To 100 parts by weight of polybutene, 25 parts by weight of toluene manufactured by Kanto Chemical Co., Ltd. as a solvent for polybutene, 20 parts by weight of methyl ethyl ketone manufactured by Wako Pure Chemical Industries, Ltd. as a solvent for phenoxy resin, and after mixing them, 7 parts by weight of butyl alcohol manufactured by Kojun Co., Ltd. was added.
<Comparative Example 1>
In Comparative Example 1, an adhesive 25 was prepared with the following composition. A polybutene having an average molecular weight (Mn) of 2900 manufactured by JX Nippon Oil & Energy Corporation (Nisshi Polybutene HV1900) as a phenoxy resin with respect to 100 parts by weight is a weight average molecular weight (MW) manufactured by Nippon Steel & Sumikin Chemical Co., Ltd. 2 parts by weight of “Phenotote YP70” having a weight of 50,000 to 60,000 was added.

To 100 parts by weight of polybutene, 25 parts by weight of toluene manufactured by Kanto Chemical Co., Ltd. as a solvent for polybutene, 20 parts by weight of methyl ethyl ketone manufactured by Wako Pure Chemical Industries, Ltd. as a solvent for phenoxy resin, and after mixing them, 2 parts by weight of ethyl alcohol manufactured by Kojun Co., Ltd. was added.
<Comparative Example 2>
In Comparative Example 2, an adhesive 25 was produced with the following composition. The polybutene having an average molecular weight (Mn) of 2900 manufactured by JX Nippon Oil & Energy Corporation (Nisshi Polybutene HV1900) is 100 parts by weight, and the weight average molecular weight (MW) manufactured by Nippon Steel & Sumikin Chemical Co., Ltd. as a phenoxy resin. 20 parts by weight of “Phenotote YP70” having a weight of 50,000 to 60,000 was added.

  To 100 parts by weight of polybutene, 25 parts by weight of toluene manufactured by Kanto Chemical Co., Ltd. as a solvent for polybutene, 30 parts by weight of methyl ethyl ketone manufactured by Wako Pure Chemical Industries, Ltd. as a solvent for phenoxy resin, and after mixing them, 18 parts by weight of ethyl alcohol manufactured by Kojun Co., Ltd. was added (FIG. 4).

  Table 1 shows the results of testing by the method described above. It turned out that Example 1- Example 6 has shown the outstanding performance in all the points of insect trapping property, storage property, and usability.

  On the other hand, although Comparative Example 1 has the same insect trapping properties as those of Examples 1 to 6, it was found that the storage property and usability were poor. This is probably because the amount of phenoxy resin added is small.

  Moreover, although the comparative example 2 was the same as Example 1- Example 6 in storage property and usability, it turned out that insect trapping property is bad. This is probably because the amount of phenoxy resin added is too large.

  As described above, a mixture of polybutene having an average molecular weight of 2600 or more and a phenoxy resin having a weight average molecular weight of 40000 or more is used as the adhesive 25 to be applied to the adhesive film 27, and phenoxy is used with respect to 100 parts by weight of polybutene. By adding 4 parts by weight or more and less than 15 parts by weight of the resin, the insect trapping property is excellent, the adhesive dripping hardly occurs, and it can be stored for a long period of time, and the release paper is easy to peel off and has excellent usability. An adhesive film 27 can be provided.

  The present invention can be used as the adhesive film 27 used in the light attracting type insect trap 1.

DESCRIPTION OF SYMBOLS 1 Insect catcher 3 Front plate 5 Crevice part 7 Handle 9 Insect catch plate 11 Fluorescent lamp 13 Power cord 15a, b Groove part for insect catch plate 17a, b Groove part for front plate 19 Reflecting plate 21 Frame plate 23 Transparent film 25 Adhesive 27 Adhesive film 29 Release paper

Claims (5)

A translucent adhesive film used in a light attracting insect trap,
The adhesive film is
Adhesive is applied to at least one side of the transparent film, and is used by being installed in the vertical direction on the insect trap,
The pressure-sensitive adhesive has polybutene and phenoxy resin,
The polybutene has an average molecular weight of 2600 or more,
The phenoxy resin is
A weight average molecular weight of 40,000 or more,
The pressure-sensitive adhesive film, wherein 4 parts by weight or more and less than 15 parts by weight are added to 100 parts by weight of the polybutene. The transparent film is
The pressure-sensitive adhesive film according to claim 1, wherein a surface to which the pressure-sensitive adhesive is applied is subjected to corona discharge treatment. The adhesive is
The pressure-sensitive adhesive film according to claim 1 or 2, wherein the transparent film is applied to 10 g / m 2 or more and less than 50 g / m 2. A method for producing a translucent adhesive film used in a light attracting insect trap,
The adhesive film is
It is used to be installed in a substantially vertical direction on the insect trap,
After the adhesive is applied to at least one side of the transparent film, heated and dried, a release paper having peelability is pasted,
The adhesive is
A polybutene having an average molecular weight of 2600 or more is dissolved by adding a solvent and stirring to prepare a 70-85 wt% polybutene solution,
To a powdered phenoxy resin having a weight average molecular weight of 40,000 or more, a solvent was added and dissolved by stirring to prepare a 35-50% by weight phenoxy resin solution,
The polybutene solution and the phenoxy resin solution are mixed, and the primary alcohol is added and stirred,
4 parts by weight or more and less than 15 parts by weight of the phenoxy resin is added to 100 parts by weight of the polybutene,
The manufacturing method of the adhesive film characterized by the above-mentioned. The solvent used for the polybutene is:
At least one member of the group consisting of benzene, toluene, xylene, ethylbenzene,
The solvent used for the phenoxy resin is
Methyl ethyl ketone,
The primary alcohol is
The method for producing an adhesive film according to claim 4, wherein 20 parts by weight or more and less than 50 parts by weight are added to 100 parts by weight of the methyl ethyl ketone.