JP2007082428A - Pressure-sensitive adhesive insect-catching sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive insect-catching sheet equipped with a pressure-sensitive adhesive layer having excellent adhesion and improved in tack used as an indicator of instantaneous adhesion. <P>SOLUTION: This pressure-sensitive adhesive insect-catching sheet comprises a base material and the pressure-sensitive adhesive layer applied to at least one of surfaces of the base material. The pressure-sensitive adhesive layer is formed out of an aqueous emulsion-type pressure-sensitive adhesive composition containing (A) a copolymer emulsion in an amount of 100 pts.wt. (converted into a solid content) and (B) polybutene in an amount of 5-150 pts.wt., wherein the copolymer emulsion (A) contains a polymer which is obtained by conducting emulsion polymerization of a monomer component containing (a) a (meth)acrylic acid alkyl ester having a 4-12C alkyl in an amount of 65-99.5 pts.wt. and (b) another copolymerizable monomer in an amount of 0.5-35 pts.wt. (provided that, a total amount of the components (a) and (b) is 100 pts.wt.) and has a glass transition temperature of -75 to -20°C. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an adhesive insect trap sheet. More specifically, it is an adhesive insect catching sheet for capturing pests such as flies and other small organisms, and has an excellent adhesive force and improved tack, particularly probe tack, as a guideline for instantaneous adhesiveness. The present invention relates to an adhesive insect trap sheet provided with an adhesive layer.

  Conventionally, in order to control pests such as flies and other small organisms that occur in agriculture, livestock production, home gardening, etc., for example, to spray insecticides or to suppress the generation of pests such as flies Antifungal agent is sprayed. Although these insecticides and fungicides have great effects, they do not last and have problems such as polluting the environment. In recent years, adhesive insecticide sheets such as fly paper and pest control agents have been used. Has attracted attention (see, for example, Patent Document 1).

For example, such an adhesive insect capturing sheet is provided with a sheet-like base material and an adhesive layer made of an adhesive composition disposed on the base material. Capture and extinguish with an adhesive layer disposed on the material.
JP 2001-58902 A

  However, the pressure-sensitive adhesive composition used as the pressure-sensitive adhesive layer of the conventional pressure-sensitive insect catching sheet has a low adhesive strength and also has a short tackiness, that is, a weak tack, so that it can capture pests such as flies. There was a problem.

  Further, the conventional adhesive insect trap sheet has a problem that the adhesive force changes with time and deteriorates due to the environment in which it is used, such as air, light, and temperature, and the adhesive force decreases. In particular, an adhesive trapping sheet in which an adhesive composition mainly composed of butadiene rubber is used as an adhesive layer has been used. However, such an adhesive trapping sheet is severely deteriorated by ultraviolet rays or the like, and is outdoors. When used in the above, there is also a problem that the adhesive strength with time decreases rapidly.

  The present invention has been made in view of such problems of the prior art, and has a tack, particularly a probe tack, which has an excellent adhesive force and serves as an indicator of instantaneous adhesiveness of the adhesive composition. An improved sticking insect trap sheet is provided.

  As a result of studying to cope with the above-mentioned problems, the use of an aqueous emulsion-type pressure-sensitive adhesive composition containing a predetermined copolymer emulsion and polybutene in a specific ratio as the pressure-sensitive adhesive layer of the pressure-sensitive insect catching sheet is excellent. It has been found that an adhesive layer having an adhesive force and an improved tack can be formed, and the present invention has been made based on the above findings. That is, the present invention provides the following adhesive insect catching sheet.

[1] An adhesive insect trap sheet comprising a base material and an adhesive layer disposed on at least one surface of the base material, wherein the adhesive layer has (a) an alkyl group having 4 to 12 carbon atoms. 65 to 99.5 parts by mass of (meth) acrylic acid alkyl ester and (b) 0.5 to 35 parts by mass of other copolymerizable monomers (provided that (a) + (b) = 100 parts by mass) (A) 100 mass parts (in terms of solid content) of a copolymer emulsion containing a polymer having a glass transition point of -75 to -20 ° C obtained by emulsion polymerization of a monomer component containing An adhesive insect trap sheet comprising an aqueous emulsion-type pressure-sensitive adhesive composition containing 5 to 150 parts by mass of polybutene.

[2] The pressure-sensitive adhesive according to [1], wherein (B) polybutene of the water-based emulsion-type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer contains polybutene represented by the following formula (1) and / or (2). Insect catching sheet.

（但し、式（１）において、ｎは４〜４５の整数である）

(In the formula (1), n is an integer of 4 to 45)

（但し、式（２）において、ｎは４〜４５の整数である）

(However, in Formula (2), n is an integer of 4 to 45)

[3] The sticky insect trapping sheet according to [2], wherein n is an integer of 10 to 40 in the polybutene represented by the formula (1) and / or (2).

[4] The adhesive insect trap sheet according to any one of [1] to [3], wherein the base material has an orange color, a yellow color, or a blue color.

[5] The sticky insect trapping sheet according to any one of [1] to [4], wherein the aqueous emulsion-type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer further contains a colorant.

[6] The adhesive insect trap sheet according to any one of [1] to [5], wherein the base material is a flat plate.

[7] The adhesive insect trap sheet according to any one of [1] to [5], wherein the base material and the adhesive layer disposed on the base material are wound in a roll shape.

[8] The adhesive insect trap sheet according to any one of [1] to [7], wherein the measurement value of the adhesive layer measured by a probe tack test in accordance with JIS Z0237 is 3 N / cm ² or more.

  ADVANTAGE OF THE INVENTION According to this invention, while having the outstanding adhesive force, the sticking insect trap sheet | seat provided with the tack which becomes the guideline of instantaneous adhesiveness, especially the adhesive layer in which the probe tack was improved can be provided.

  Hereinafter, the present invention will be described based on specific embodiments (hereinafter referred to as embodiments), but the present invention is not limited to the following embodiments, and does not depart from the spirit of the present invention. Therefore, it should be understood that, based on the general knowledge of those skilled in the art, those in which the following embodiments are appropriately modified, improved, and the like are also within the scope of the present invention.

  Fig.1 (a) is a top view which shows typically one Embodiment of the adhesive insect trap sheet of this invention, FIG.1 (b) is a side view of the adhesive insect trap sheet shown to Fig.1 (a). is there. As shown in FIGS. 1 (a) and 1 (b), the adhesive insect trap sheet 1 of the present embodiment includes a substrate 2 and an adhesive layer 3 disposed on at least one side of the substrate 2. In the adhesive insect trap sheet 1 of the present embodiment, the adhesive layer 3 is (a) (meth) acrylic acid alkyl ester 65 to 99 having an alkyl group having 4 to 12 carbon atoms. Emulsion polymerization of a monomer component containing 0.5 parts by mass and (b) 0.5 to 35 parts by mass of other copolymerizable monomers (provided that (a) + (b) = 100 parts by mass) (A) 100 weight part of copolymer emulsion (solid content conversion) containing a polymer with a glass transition point of −75 to −20 ° C. obtained by carrying out, and (B) 5 to 150 weight part of polybutene It consists of an emulsion-type pressure-sensitive adhesive composition. The pressure-sensitive insect trap sheet 1 of the present embodiment includes the pressure-sensitive adhesive layer 3 having an excellent adhesive force and improved tack as a guideline for instantaneous pressure-sensitive adhesiveness.

[Base material]
The substrate 2 in the adhesive insect capturing sheet 1 of the present embodiment is for holding the adhesive layer 3 on at least one surface thereof, and there is no particular limitation on the material thereof, but paper, woven fabric, Nonwoven fabrics, plastic films, metal foils, foamed sheets, or laminates thereof can be used. For example, when a combustible material such as paper is used as the base material 2, when the insect pests are sufficiently captured and used, the adhesive insect trap sheet can be incinerated as it is.

  There is no restriction | limiting in particular about the thickness of the base material 2 used for the adhesion insect capturing sheet 1, and it can determine suitably according to the use environment and usage method of the adhesion insect capturing sheet 1. For example, it is preferable that the thickness of the base material 2 is 0.03 mm to 5.0 mm. Further, in the cultivation site of agricultural products such as a greenhouse and an orchard, the thicknesses of FIGS. 1 (a) and 1 (b) When such a flat adhesive insect trap sheet 1 is used while being hung, it is more preferably a flat substrate 2 formed to a thickness of about 0.04 mm to 3.0 mm.

  Moreover, although the base material 2 shown to Fig.1 (a) and FIG.1 (b) is formed with the through-hole 4 for suspending and using from a ceiling etc., illustration is abbreviate | omitted, for example, of hook You may have such a hanging tool, and you may have a support stand which can stand and fix an adhesion insect trap sheet. Further, the adhesive insect trap sheet of the present embodiment can be used by being directly disposed on a floor or the like so that the adhesive layer faces upward, and has the above-described through holes, hooks, and the like. It may not be.

  In addition, the base material 2 in the pressure-sensitive insect trap sheet 1 of the present embodiment may be a base material 2 having a predetermined color in order to enhance the attractiveness of pests and the like. The specific color is preferably a color that enhances the attractiveness of pests, and examples thereof include orange, yellow, and blue.

  It is preferable that the base material 2 in the adhesive insect trap sheet 1 of the present embodiment is a material having a low hygroscopic property. Due to the low hygroscopicity, deformation such as warpage of the substrate can be reduced. Moreover, there is no restriction | limiting in particular about the shape of the base material 2, but when using it hanging from a ceiling etc., since workability | operativity at the time of hanging the adhesive insect trap sheet | seat 1 is good, it is a rectangle like Fig.1 (a). It is preferable that

[Adhesive layer]
The adhesive layer 3 is disposed on at least one side of the base material 2, attracts pests and the like, and is captured and exterminated by the adhesive layer 3. In the pressure-sensitive insect trap sheet 1 of the present embodiment, it is formed using the above-described predetermined aqueous emulsion-type pressure-sensitive adhesive composition, and has an excellent adhesive force and has a tack as a guideline for instantaneous pressure-sensitive adhesiveness. It has been improved well.

  When the aqueous emulsion type pressure-sensitive adhesive composition is applied to the surface of the base material 2 to form the pressure-sensitive adhesive layer 3, for example, it may be applied directly to the surface of the sheet-like base material 2, or release paper An aqueous emulsion-type pressure-sensitive adhesive composition may be applied once, dried under normal drying conditions, and then transferred to form the pressure-sensitive adhesive layer 3.

  In addition, in FIG. 1 (a) and FIG.1 (b), although the adhesion insect trap sheet | seat 1 with which the adhesion layer 3 was arrange | positioned by the single side | surface of the base material 2 is shown, the adhesion layer 3 is provided on both surfaces of the base material 2. It may be arranged. Moreover, although illustration is abbreviate | omitted, in the adhesion insect trap sheet | seat of this Embodiment, the release sheet (release paper) stuck on the surface of the adhesion layer may further be provided.

  In the adhesive insect trap sheet of the present embodiment, the adhesive layer 3 is provided on at least one side (one side in FIG. 1A) of the flat substrate 2 as shown in FIGS. 1 (a) and 1 (b). For example, as shown in FIG. 2, the belt-shaped adhesive insect trap sheet 1 in which the adhesive layer 3 is provided on at least one surface of the base material 2 is wound into a roll shape, as shown in FIG. 2. It may be. At the time of use, the adhesive insect capturing sheet 1 can be pulled out spirally from the central portion of the adhesive insect capturing sheet 1 wound in a roll shape, and the extracted leading end can be fixed to a high position such as a ceiling. By comprising in this way, space saving at the time of storage is realizable, maintaining the effective area of the adhesion layer 3 at the time of use favorable.

  In addition, when the adhesive insect capturing sheet 1 is wound in a roll shape as described above, as shown in FIG. 3, a cylindrical container 5 for storing the wound adhesive insect capturing sheet 1 is further provided. It may be provided. Thereby, the handling of the adhesive insect catching sheet 1 is facilitated, and the deterioration of the adhesive layer 3 during storage can be reduced. Here, FIG.2 and FIG.3 is a perspective view which shows typically other embodiment of the adhesion insect trap sheet | seat of this invention.

  Moreover, in the adhesive insect capturing sheet 1 of the present embodiment, for example, as shown in FIG. 4, an adhesive layer 3 is disposed on at least one surface of a single substrate 2, and such adhesive insect capturing sheets 1 a and 1 b are provided. However, a plurality of layers may be stacked. Such an adhesive insect catching sheet 1 is obtained by first carrying out the extermination of harmful insects using the adhesive layer 3 of the adhesive insect catching sheet 1a laminated on the top, and when the insects or the like are sufficiently adhered to the adhesive layer 3. When the adhesive strength of the adhesive layer 3 is reduced due to the change over time, the adhesive insect trap sheet 1a laminated on the top of the substrate 2 on which the adhesive layer 3 is disposed, that is, the uppermost layer is peeled off. The sticky insect trap sheet 1b is caused to appear. Thereafter, pests are captured and exterminated by the second layer adhesive insect capturing sheet 1b. The peeled-off insect trapping sheet 1a is discarded according to a predetermined method.

  By comprising in this way, until it uses up the laminated | stacked adhesive insect trap sheet | seat, it will only need to peel off an adhesive insect trap sheet | seat, and the effort concerning installation and replacement | exchange will be reduced significantly. Here, FIG. 4 is a perspective view schematically showing another embodiment of the adhesive insect trap sheet of the present invention.

About the application amount of the aqueous emulsion-type pressure-sensitive adhesive composition as a raw material when forming the pressure-sensitive adhesive layer 3 of the pressure-sensitive insect trap sheet 1 of the present embodiment as shown in FIG. 1 (a) and FIG. 1 (b), for example, it is preferable that the mass after drying is 40~130g / m ^2, further preferably 50 to 120 / m ^2. When the coating amount of the water-based emulsion type pressure-sensitive adhesive composition is less than 40 g / m ^{2, the} amount of the water-based emulsion type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer 3 is too small, and a good pressure-sensitive adhesive force and tack strength are exhibited. There are times when you can't. On the other hand, even if the coating amount of the aqueous emulsion-type pressure-sensitive adhesive composition exceeds 130 g / m ² , the pressure-sensitive adhesive force and tack strength of the pressure-sensitive adhesive layer 3 do not change so much, and the cost may increase. When the thickness is too thick, handling of the adhesive insect trap sheet 1 may be difficult.

In the pressure-sensitive insect trap sheet 1 of the present embodiment, the measured value by the probe tack test in accordance with JIS Z0237 of the pressure-sensitive adhesive layer 3 (hereinafter sometimes referred to as “probe tack value”) is 3 N / cm ² or more. It is preferably 4N / cm ² or more. This probe tack value is a value that serves as a guideline for the instantaneous adhesiveness of the adhesive layer 3, and since the adhesive layer of the conventional adhesive insect catching sheet is low in this probe tack value, However, they often escaped without being able to catch the pest.

In the adhesive insect trap sheet 1 of the present embodiment, an aqueous emulsion-type pressure-sensitive adhesive composition containing 100 parts by weight (in terms of solid content) of a predetermined (A) copolymer emulsion and (B) 5 to 150 parts by weight of polybutene. By providing the pressure-sensitive adhesive layer 3 made of the above, the probe tack value, which was difficult to realize in the conventional pressure-sensitive insect trapping sheet, can be 3 N / cm ² or more.

  Here, a method of a probe tack test based on JIS Z0237 will be described. First, a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer configured in the same manner as the pressure-sensitive adhesive layer 3 of the pressure-sensitive insect trapping sheet 1 of the present embodiment is prepared, and this pressure-sensitive adhesive sheet is cut so that the pasting area is 25 mm × 25 mm. Prepare a specimen.

Next, the force required to peel off the probe from the adhesive surface of the test piece in the vertical direction after contacting the test piece with the cylindrical probe of the probe tacking device for probe tack for a certain period of time while applying a constant load. (N / cm ² ) is measured. As measurement conditions, the diameter of the cylindrical probe was 5 mm, the contact speed and the peeling speed were 10 ± 0.1 mm per second, the contact load was 0.98 ± 0.01 N / cm ² , and the contact time was 1.0 ± 0. 1 second, measurement is performed on five test pieces, and the average value is taken as the measurement value. In this way, the probe tack value can be measured.

[Aqueous emulsion type pressure-sensitive adhesive composition]
In the adhesive insect trap sheet 1 of the present embodiment, the adhesive layer 3 comprises, as described above, 100 parts by mass (in terms of solid content) of a predetermined (A) copolymer emulsion and 5 to 150 parts by mass of (B) polybutene. It is formed from the aqueous emulsion-type pressure-sensitive adhesive composition it contains. Such an aqueous emulsion-type pressure-sensitive adhesive composition has an excellent adhesive force and an improved tack that provides a guideline for instantaneous adhesiveness.

  Furthermore, (A) copolymer emulsion to be used is (a) 65 to 99.5 parts by mass of (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms, and (b) other copolymer. A glass transition point obtained by emulsion polymerization of a monomer component containing 0.5 to 35 parts by mass of a possible monomer (however, (a) + (b) = 100 parts by mass) is −75 to By making a copolymer emulsion containing a polymer at −20 ° C., it is possible to improve durability against ultraviolet rays as compared with a pressure-sensitive adhesive composition mainly composed of a conventional butadiene-based rubber. Can be improved. Hereinafter, each component used for the aqueous emulsion type pressure-sensitive adhesive composition will be specifically described.

[(A) Copolymer emulsion]
(A) The copolymer emulsion is (a) (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms (hereinafter sometimes referred to as component (a)) 65 to 99.5 parts by mass, (B) Other copolymerizable monomers other than the (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms (hereinafter also referred to as component (b)) 0.5 It is obtained by emulsion polymerization of a monomer component containing ˜35 parts by mass (provided that (a) + (b) = 100 parts by mass) and has a glass transition point (Tg) in the range of −75 to −20 ° C. It contains the polymer which has. This (A) copolymer emulsion needs to be dispersed in an aqueous medium. When the glass transition point is lower than −75 ° C., the holding power, the adhesive strength, and the heat resistance to the adherend are weakened, and the adhesive strength changes with time and the temporal adhesive strength (durability) decreases. On the other hand, when the glass transition point is higher than −20 ° C., the adhesive strength, moisture resistance, and water resistance with respect to the adherend are lowered, and the effect of improving tack cannot be obtained. In addition, the glass transition point of the polymer contained in (A) copolymer emulsion becomes like this. Preferably it is -70 to -25 degreeC, More preferably, it is -65 to -30 degreeC.

  In addition, a glass transition point shall mean the value measured by the method shown below. First, about 5 g of the aqueous dispersion containing the copolymer emulsion (A) is thinly stretched on a glass plate and dried at 25 ° C. for 7 days to obtain a dry film. About the obtained dry film, a differential scanning calorimeter (DSC), for example, DSC made by Rigaku Denki Co., Ltd. was used, under the conditions of a heating rate = 20 ° C./min, a nitrogen atmosphere, and a sample amount = 20 mg. taking measurement.

  As described above, the (A) copolymer emulsion uses a (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms as the component (a). By using the (meth) acrylic acid alkyl ester having 12 alkyl groups, it is possible to suppress the change with time of the adhesive strength of the aqueous emulsion-type pressure-sensitive adhesive composition. In addition, when (meth) acrylic-acid alkylester which has a C4-C4 alkyl group is used as (a) component, a glass transition point becomes high and adhesive force and tack | tuck become low. On the other hand, when a (meth) acrylic acid alkyl ester having an alkyl group having more than 12 carbon atoms is used, the polymerization stability during copolymer emulsion polymerization is deteriorated, which is not preferable.

  Moreover, when the amount of the component (a) is less than 65 parts by mass (however, (a) + (b) = 100 parts by mass), the adhesive strength and tack are lowered, and when it exceeds 99.5 parts by mass, The chemical stability of the copolymer emulsion becomes poor. Furthermore, as the pressure-sensitive adhesive, there is a change in viscosity over time, which is not preferable.

  Conventionally, pressure-sensitive adhesive compositions using a copolymer emulsion mainly composed of an aliphatic conjugated diene-based, for example, butadiene-based monomer, have been used in a pressure-sensitive adhesive layer used for a pressure-sensitive insect trapping sheet. For this reason, the pressure-sensitive adhesive layer of the conventional sticky insect trap sheet is severely deteriorated by ultraviolet rays, and its adhesive strength with time is extremely low.For example, in the sticky insect trap sheet that may be used outdoors, there is a problem in terms of durability. there were. In the adhesive insect trap sheet of the present embodiment, as described above, (a) 65 to 99.5 parts by mass of (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms, and (b) other A copolymer emulsion obtained by emulsion polymerization of a monomer component composed of 0.5 to 35 parts by mass of a copolymerizable monomer (provided that (a) + (b) = 100 parts by mass) is used. Therefore, it is possible to form an adhesive layer having excellent adhesive strength over time.

  (A) Examples of (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms include butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, and pentyl (meth). Acrylate, isoamyl (meth) acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate, octyl (meth) acrylate, isooctyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, nonyl (meth) acrylate, isononyl (meth) Acrylic esters of linear or branched aliphatic alcohols such as acrylate, decyl (meth) acrylate, isodecyl (meth) acrylate, undecyl (meth) acrylate, dodecyl (meth) acrylate, and the corresponding methacrylate Such as esters and the like. Of these, butyl (meth) acrylate and 2-ethylhexyl (meth) acrylate are preferable. These may be used alone or in combination of two or more.

  (A) (b) Other copolymerizable monomers other than the (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms include hydroxyl group-containing monomers. Specifically, for example, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 5-hydroxyamyl (meth) acrylate, 6-hydroxyhexyl (meth) Examples thereof include acrylate, 8-hydroxyoctyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, and the like.

  (B) Other copolymerizable monomers further include (meth) acrylic acid alkyl esters having an alkyl group having 3 or less carbon atoms, such as methyl (meth) acrylate and ethyl (meth) acrylate; styrene, α -Methylstyrene, 4-methylstyrene, 2-methylstyrene, 3-methylstyrene, 4-methoxystyrene, 2-hydroxymethylstyrene, 4-ethylstyrene, 4-ethoxystyrene, 3,4-dimethylstyrene, 3,4 -Diethyl styrene, 2-chlorostyrene, 3-chlorostyrene, 4-chloro-3-methylstyrene, 4-t-butylstyrene, 2,4-dichlorostyrene, 2,6-dichlorostyrene, 1-vinylnaphthalene, etc. Aromatic vinyl monomer; acrylic acid, methacrylic acid, ethyl acrylic acid, itaconic acid, male Α, β-unsaturated carboxylic acid monomers such as inic acid, maleic acid monoester, and crotonic acid; vinyl monomers such as vinyl acetate; other polyfunctional monomers such as divinylbenzene; ) Acids such as acrylamide, N-methylol (meth) acrylamide, N-methoxymethyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide, N, N'-methylenebisacrylamide, diacetone acrylamide, maleic acid amide, maleimide Amide compounds; vinyl cyanide compounds such as acrylonitrile and methacrylonitrile; 4- (meth) acryloyloxy-2,2,6,6-tetramethylpiperidine, 4- (meth) acryloylamino-2,2,6,6 -Tetramethylpiperidine, 4- (meth) acryloyloxy-1, , 2,6,6-piperidine-based monomers such as pentamethyl piperidine; and di-caprolactone.

  In addition, (b) as other copolymerizable monomer, a radical polymerizable monomer having a functional group, for example, α, β-unsaturated carboxylic acid other than the above; maleic anhydride, itaconic anhydride, etc. Unsaturated carboxylic acid anhydrides; hydroxyl group-containing vinyl monomers other than the above such as N-methylol vinyl ether and 2-hydroxyethyl vinyl ether; amino group-containing vinyl monomers such as 2-aminoethyl vinyl ether; 1-trimethylamine (meth) acrylimide, 1-methyl-1-ethylamine (meth) acrylimide, 1,1-dimethyl-1- (2-hydroxypropyl) amine (meth) acrylimide, 1,1-dimethyl-1 Amino acids such as-(2'-phenyl-2'-hydroxyethyl) amine (meth) acrylimide, 1,1-dimethyl-1imide Non-imide group-containing vinyl monomers; epoxy group-containing vinyl monomers other than the above, such as allyl glycidyl ether. (B) A component is used as needed and can be used individually or in combination of 2 or more types.

  In addition, about the quantity of (a) component and (b) component, (a) component is 68.0-99.0 mass parts, (b) component is 1.0-32.0 mass parts (total 100 masses). Part), the component (a) is preferably 70.0 to 95.0 parts by mass, and the component (b) is more preferably 5.0 to 30.0 parts by mass (total 100 parts by mass). By entering such a range, good adhesive force can be obtained, and the tackiness of the pressure-sensitive adhesive composition is further improved.

  Specific examples of the copolymer emulsion (A) used in the aqueous emulsion type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer include 2-ethylhexyl acrylate, n-butyl acrylate, acrylic acid, and hydroxyethyl methacrylate. And a polymer (2EHA / n-BA / acrylic acid / hydroxyethyl methacrylate copolymer).

  Such a copolymer emulsion (A) can be obtained by emulsion polymerization in the presence of an emulsifier, water and a polymerization initiator. Examples of the emulsifier include anionic surfactants such as alkyl sulfate ester salts, alkylaryl sulfate ester salts, alkyl phosphate ester salts, and fatty acid salts; cationic surfactants such as alkylamine salts and alkyl quaternary amine salts; Nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene alkyl aryl ethers, block type polyethers; amphoteric surfactants such as carboxylic acid type (for example, amino acid type, bethanic acid type), sulfonic acid type, Under the trade names, Latemul S-180A, Emar 10N (manufactured by Kao Corporation), Eleminor JS-2 (manufactured by Sanyo Chemical Industries), Aqualon KH-10 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Adekaria Soap SE-10N, Adeka Rear soap SR-10 [above, manufactured by Asahi Denka Kogyo Co., Ltd.], Antox MS-60 Nippon Emulsifier Co., Ltd.], Safuma FP-120 [manufactured by Toho Chemical Industry Co., Ltd.], it is possible to use any of such as reactive emulsifiers such as. Such emulsifiers can be used alone or in combination of two or more.

  Examples of the polymerization initiator include persulfates such as potassium persulfate, sodium persulfate, and ammonium persulfate, hydrogen peroxide, t-butyl hydroperoxide, t-butyl peroxymaleic acid, and succinic peroxide. Water-soluble initiators such as 2,2'-azobis [2-N-benzylamidino] propane hydrochloride; benzoyl peroxide, cumene hydroperoxide, diisopropyl peroxydicarbonate, cumylperoxyneodecanoate, cumylper Oil-soluble initiators such as oxyoctoate and azobisisobutyronitrile; redox initiators combined with reducing agents such as acidic sodium sulfite, ferrous sulfate, tetraethylenepentamine, and ascorbic acid can be used.

  The amount of the emulsifier (surfactant) used in the emulsion polymerization is usually 0.01 to 5 parts by mass, preferably 0.7 to 3 parts by mass with respect to (a) + (b) = 100 parts by mass. is there. If it is less than 0.01 part by mass, emulsification is not sufficient, and the polymerization stability tends to deteriorate. On the other hand, when the amount exceeds 5 parts by mass, the diameter of the particles obtained by polymerization becomes small and the fluidity of the pressure-sensitive adhesive composition becomes poor, and as a result, the coating property tends to be poor.

  Moreover, the usage-amount of a polymerization initiator is 0.1-4 mass parts normally with respect to (a) + (b) = 100 mass parts, Preferably it is 0.3-2 mass parts. If the amount is less than 0.1 parts by mass, the polymerization stability is not sufficient, aggregates are generated, and the amount of unreacted monomers increases. On the other hand, when the amount exceeds 4 parts by mass, the diameter of the particles obtained by polymerization increases, the reaction rate increases, and the water resistance and moisture resistance deteriorate in terms of performance.

[(B) Polybutene]
(B) Polybutene is a component contained in the aqueous emulsion-type pressure-sensitive adhesive composition in an amount of 5 to 150 parts by mass with respect to 100 parts by mass (in terms of solid content) of the copolymer emulsion (A). By containing 5 to 150 parts by mass of this (B) polybutene, the tackiness of the aqueous emulsion-type pressure-sensitive adhesive composition is improved satisfactorily. In order to obtain an aqueous emulsion-type pressure-sensitive adhesive composition with improved tack, (B) polybutene is 15 to 100 parts by mass with respect to 100 parts by mass (in terms of solid content) of (A) copolymer emulsion. It is preferable to contain, and it is more preferable to contain 25-75 mass parts. In addition, when the amount of (B) polybutene is less than 5 parts by mass with respect to 100 parts by mass (in terms of solid content) of (A) copolymer emulsion, the effect of improving tack cannot be obtained. On the other hand, when it exceeds 150 parts by mass, the holding power and adhesive strength against the adherend are weakened, and the moisture resistance is further lowered.

  The (B) polybutene used in the aqueous emulsion type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer preferably contains a polybutene represented by the following formula (3) and / or (4), and is represented by the following formula (3). More preferably, the polybutene is included.

（但し、式（３）において、ｎは４〜４５の整数である）

(However, in Formula (3), n is an integer of 4 to 45)

（但し、式（４）において、ｎは４〜４５の整数である）

(In the formula (4), n is an integer of 4 to 45)

  Such (B) polybutene can be obtained by polymerizing isobutene and normal butene (for example, low temperature selective polymerization) in the BB fraction produced by the decomposition of naphtha, and by adjusting the polymerization conditions, The viscosity and molecular weight of the polybutene obtained can be adjusted. (B) The polybutene used in the aqueous emulsion type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer is a mixture of linear hydrocarbons having side chains as shown in the above formula (3), and has one double bond at the end. The polybutene may be a polybutene having no double bond at the terminal as in the above formula (4).

  In addition, as (B) polybutene used for the water-based emulsion-type pressure-sensitive adhesive composition of the present embodiment, the polybutene represented by the above formula (3) and / or (4) is replaced with (B) the entire polybutene (100 mass). Part) is preferably 30 parts by mass or more, more preferably 50 parts by mass or more, and particularly preferably 60 parts by mass or more. When the polybutene represented by the above formula (3) and / or (4) is less than 30 parts by mass, in the resulting aqueous emulsion-type pressure-sensitive adhesive composition, (B) the effect of improving tack by containing polybutene May decrease. The (B) polybutene used in the aqueous emulsion-type pressure-sensitive adhesive composition of the present embodiment includes a conventionally known polybutene represented by a structural formula other than the above formula (3) and / or (4). Also good.

  In the polybutene represented by the above formula (1) and / or (2), n is preferably an integer of 10 to 40, and more preferably n is an integer of 12 to 25. By containing 5 to 150 parts by mass of polybutene having such a structure, it is possible to significantly improve the adhesive strength and tack.

  As such (B) polybutene, it is preferable to use Nissan Polybutene 30N (trade name) and Pearl Ream (trade name) manufactured by Nippon Oil & Fats, and High Mall 6G (trade name) manufactured by Shin Nippon Petrochemical Co., Ltd. it can.

[Other additives]
In the aqueous emulsion type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer, colorants, tackifiers, plasticizers, crosslinking agents, protective colloid agents, thickeners, antifoaming agents, antiseptics, antioxidants, ultraviolet rays It may further contain other additives such as an absorbent.

  For example, the aqueous emulsion pressure-sensitive adhesive composition can be colored in a desired color by further containing a colorant. Examples of such a colorant include conventionally known pigments.

  The color of the colorant can be appropriately selected according to the purpose of use of the aqueous emulsion-type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer, but is preferably a color that enhances the attractiveness of pests, etc., orange, yellow , Blue and the like. As a result, pests and the like are attracted to the specific hue of the adhesive layer and easily adhere to the adhesive layer, and the probe tack of the adhesive layer is improved, so that the insects once attached can escape from the adhesive layer. The pest adherence that it is impossible to do becomes better.

  Such a colorant is preferably contained in an amount of 0.005 to 3.0 parts by mass with respect to 100 parts by mass (in terms of solid content) of the copolymer emulsion (A). When the colorant is less than 0.005 parts by mass, the colorant may be too small to be colored in a desired color. On the other hand, if it exceeds 3.0 parts by mass, the adhesiveness of the aqueous emulsion-type pressure-sensitive adhesive composition may be reduced, and even if the pressure-sensitive adhesive is increased further, the coloring effect will not change and the cost will increase. .

  Examples of the tackifier include rosin-based, terpene resin-based, and petroleum resin-based tackifiers, and these can be used alone or in combination of two or more. Of these, rosin-based tackifiers are preferred, and rosin-based tackifiers are preferably used alone or in combination with other tackifiers. Rosin-based tackifier is a rosin-based tackifier resin, for example, rosin or rosin derivative is stabilized by modification means such as hydrogenation, disproportionation, polymerization, etc., and this is glycerin, pentaerythritol, etc. Resins obtained by esterification with various polyalcohols are preferred. When the softening point of the rosin-based tackifying resin is too low, the softening point and the cohesive force of the tackifying resin are not improved, and the tack holding force at high temperatures tends to decrease. On the other hand, if the softening point is too high, the viscosity increases at the time of the esterification reaction and the production is not easy. Therefore, the softening point of the rosin-based tackifying resin is preferably 100 to 170 ° C. The rosin tackifier resins can be used alone or in combination of two or more. The softening point of the rosin-based tackifier resin can be measured using a ring and ball method according to JIS K5903.

  The amount of the tackifier used is preferably 1 to 30 parts by mass, more preferably 3 to 25 parts by mass with respect to 100 parts by mass (in terms of solid content) of the copolymer emulsion (A). When the amount of the tackifier is less than 1 part by mass, the effect of improving the adhesive force may not be sufficiently exhibited. On the other hand, when it exceeds 30 mass parts, adhesive force may fall.

  As the antioxidant, a hindered phenol-based antioxidant can be suitably used. The amount of the antioxidant used is preferably 0.1 to 5.0 parts by mass with respect to 100 parts by mass (in terms of solid content) of the copolymer emulsion (A). When the amount of the antioxidant is less than 0.1 parts by mass, the antioxidant effect may not be sufficiently exhibited. On the other hand, if it exceeds 5.0 parts by mass, the adhesiveness of the aqueous emulsion-type pressure-sensitive adhesive composition may be reduced, and even if the antioxidant is increased further, the antioxidant effect will not increase. Cost increases.

  The aqueous emulsion type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer is, for example, 100 parts by weight (solid content) of this (A) copolymer emulsion in an aqueous dispersion in which the predetermined amount of (A) copolymer emulsion is dispersed. (B) an aqueous dispersion in which polybutene is dispersed in an amount corresponding to 5 to 150 parts by mass with respect to (converted)), and an aqueous dispersion in which pigments and tackifiers are dispersed and other additives as necessary. In addition, it can be adjusted by stirring at room temperature for a predetermined time (for example, about 5 hours) so that the components are sufficiently mixed.

  EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. In the following, “part” means part by mass unless otherwise specified.

[Evaluation methods]
The adhesive insect trap sheets produced in the following examples and comparative examples were dried at 90 ° C. for 3 minutes and then cured at 40 ° C. for 3 days. Each adhesive insect trap sheet was cut into 25 mm × 125 mm to prepare test pieces. Using the obtained test piece, the adhesive physical properties were measured or evaluated as follows. The results are shown in Table 1.

<Adhesive strength>
The 180 ° peeling force was measured according to JIS Z0237. The adhesive strength was evaluated by using SUS304 as the adherend, bonding the test piece to the adherend in an atmosphere of 23 ° C. and 65% RH, and pressing and pressing the 2 kg roller once and again. The adhesive strength was measured at a peeling speed of 300 mm / min after being left for 20 minutes under 65% RH.

<Probe tack>
In accordance with JIS Z0237, a test piece was contacted with a cylindrical probe of a probe tack device for a probe tack for a certain period of time while applying a certain load so that the bonding area was 25 mm × 25 mm, and then this probe was tested. The force (N / cm ² ) required to peel off from the adhesive surface of the piece in the vertical direction was measured. As measurement conditions, the diameter of the cylindrical probe was 5 mm, the contact speed and the peeling speed were 10 ± 0.1 mm per second, the contact load was 0.98 ± 0.01 N / cm ² , and the contact time was 1.0 ± 0. The measurement was performed on 5 test pieces, and the average value was taken as the measurement value (N / cm ² ).

<Pest adhesion>
The test piece was cut into 10 cm × 30 cm, left in a vegetable field for 2 days, and measured by counting the number of insects attached to the test piece.
Number of attached insects: 31 or more: ◎ (excellent)
Number of attached insects 20-30: ○ (good)
10 to 19 insects attached: △ (somewhat bad)
Number of attached insects less than 10: x (defect)

[Example 1]
As component (a) ((meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms), 90 parts of n-butyl acrylate [manufactured by Idemitsu Petrochemical Co., Ltd.] and component (b) (other copolymerization) As possible monomers), methyl methacrylate (Mitsubishi Rayon Co., Ltd.) 5 parts, styrene (Mitsubishi Chemical Co., Ltd.) 2 parts, and acrylic acid (Idemitsu Petrochemical Co., Ltd.) 3 parts (total 100 parts) Emulsion polymerization of ammonium sulfate [Mitsubishi Gas Chemical Co., Ltd.] 0.4 part and sodium diphenyl ether disulfonate [Sanyo Kasei Kogyo Co., Ltd.] 1.8 part, (A-1) copolymer emulsion (solid content 50 mass%) Got. The glass transition point of the polymer constituting this (A-1) copolymer emulsion is -48 ° C. Table 1 shows the formulation (parts).

  To 100 parts (solid content) of the obtained (A-1) copolymer emulsion, (B) 50 parts of NISSAN POLYBUTEN 30N (trade name) manufactured by NOF Corporation as a polybutene, an antioxidant [Asahi Denka Kogyo Co., Ltd. Manufactured: ADK STAB LX163 (trade name)] 0.5 part, and a coloring agent (pigment) [manufactured by Dainichi Seika Kogyo Co., Ltd .: Yellow FL6G (trade name)] 0.02 part is added, and the total solid content is 55 mass. %, And an aqueous emulsion type pressure-sensitive adhesive composition was obtained. The viscosity of this aqueous emulsion-type pressure-sensitive adhesive composition was 12000 mPa · s. Table 2 shows the formulation (parts).

A 50 μm-thick polypropylene film [manufactured by Toray Industries, Inc .: Trefan 2535 (trade name)] is used as a base material, and the obtained aqueous emulsion-type pressure-sensitive adhesive composition is applied to one surface of the base material to form an adhesive layer. The adhesive insect trap sheet of Example 1 was obtained. In addition, about the application quantity of the water-based emulsion type adhesive composition, the mass after drying was set to 70 g / m < ² >. The polypropylene film used was yellow.

[Example 2]
(A-1) To 100 parts of copolymer emulsion (in terms of solid content), 50 parts of polybutene used in Example 1 was added, and the total solid content was adjusted to 54% by mass to obtain an aqueous emulsion type. A pressure-sensitive adhesive composition was obtained. The viscosity of this aqueous emulsion-type pressure-sensitive adhesive composition was 10,000 mPa · s. Table 2 shows the formulation (parts).

A water-based emulsion-type pressure-sensitive adhesive composition obtained by using, as a base material, a paperboard obtained by applying a water-based paint with an orange color to a commercially available general-purpose white paperboard having a thickness of 1 mm so that the mass after drying becomes 10 g / m ^2. Then, an adhesive layer was formed by coating on one surface of the base material to obtain an adhesive insect trap sheet of Example 2. In addition, about the application quantity of the water-based emulsion type adhesive composition, the mass after drying was set to 95 g / m < ² >.

[Example 3]
As component (a), 90 parts of 2-ethylhexyl acrylate [Idemitsu Petrochemical Co., Ltd.], as component (b), 7 parts of methyl methacrylate similar to that used in Example 1, and 3 parts of acrylic acid (total) 100 parts) and 0.3 part of ammonium persulfate and 1.5 parts of sodium diphenyl ether disulfonate were emulsion-polymerized to obtain a copolymer emulsion (solid content 50% by mass). The glass transition point of the polymer constituting this (A-2) copolymer emulsion is -55 ° C. Table 1 shows the formulation (parts).

  To 100 parts of the obtained (A-2) copolymer emulsion (in terms of solid content), 50 parts of the polybutene used in Example 1, 0.5 part of the antioxidant, and 0.02 part of the colorant are added, An aqueous emulsion pressure-sensitive adhesive composition was obtained by adjusting the total solid content to 54% by mass. The viscosity of this aqueous emulsion-type pressure-sensitive adhesive composition was 12000 mPa · s. Table 2 shows the formulation (parts).

A polypropylene film having the same composition and thickness as in Example 1 was used as a base material, and the resulting aqueous emulsion-type pressure-sensitive adhesive composition was applied to one surface of the base material to form an adhesive layer. The sticky insect trap sheet was obtained. In addition, about the application quantity of the water-based emulsion type adhesive composition, the mass after drying was set to 70 g / m < ² >. The polypropylene film used was yellow.

[Example 4]
(A-1) To 100 parts of the copolymer emulsion (in terms of solid content), 100 parts of the polybutene used in Example 1, 0.5 part of the antioxidant, and 0.02 part of the colorant are added, and the whole solid is added. The aqueous emulsion type pressure-sensitive adhesive composition was obtained by adjusting the content to 55% by mass. The viscosity of this aqueous emulsion-type pressure-sensitive adhesive composition was 11500 mPa · s. Table 2 shows the formulation (parts).

A polypropylene film having the same composition and thickness as in Example 1 was used as a base material, and the resulting aqueous emulsion-type pressure-sensitive adhesive composition was applied to one surface of the base material to form an adhesive layer. Example 4 The sticky insect trap sheet was obtained. In addition, about the application quantity of the water-based emulsion type adhesive composition, the mass after drying was set to 70 g / m < ² >. In addition, the polypropylene film used the transparent thing.

[Comparative Example 1]
(A-1) To 100 parts of copolymer emulsion (in terms of solid content), 3 parts of polybutene used in Example 1 and 0.5 part of antioxidant are added, and the total solid content becomes 55% by mass. Thus, an aqueous emulsion type pressure-sensitive adhesive composition was obtained. The viscosity of this aqueous emulsion-type pressure-sensitive adhesive composition was 12000 mPa · s. Table 3 shows the formulation (parts).

A water-based emulsion-type pressure-sensitive adhesive composition obtained by using, as a base material, a paperboard obtained by applying a water-based paint with an orange color to a commercially available general-purpose white paperboard having a thickness of 1 mm so that the mass after drying becomes 10 g / m ^2. Then, an adhesive layer was formed by coating on one surface of the substrate, and an adhesive insect trap sheet of Comparative Example 1 was obtained. In addition, about the application quantity of the water-based emulsion type adhesive composition, the mass after drying was set to 95 g / m < ² >.

[Comparative Example 2]
(A-1) To 100 parts of copolymer emulsion (in terms of solid content), 180 parts of polybutene used in Example 1 and 0.5 part of antioxidant are added, and the total solid content becomes 55% by mass. Thus, an aqueous emulsion type pressure-sensitive adhesive composition was obtained. The viscosity of this aqueous emulsion-type pressure-sensitive adhesive composition was 11500 mPa · s. Table 3 shows the formulation (parts).

A 50 μm-thick polypropylene film [manufactured by Toray Industries, Inc .: Trefan 2535 (trade name)] is used as a base material, and the obtained aqueous emulsion-type pressure-sensitive adhesive composition is applied to one surface of the base material to form an adhesive layer. The adhesive insect trap sheet of Comparative Example 2 was obtained. In addition, about the application quantity of the water-based emulsion type adhesive composition, the mass after drying was set to 70 g / m < ² >. The polypropylene film used was orange.

[Comparative Example 3]
As component (a), 50 parts of 2-ethylhexyl acrylate, and as component (b), 37 parts of methyl methacrylate similar to that used in Example 1, 10 parts of styrene, and 3 parts of acrylic acid (100 parts in total) And 0.8 parts of potassium persulfate [Mitsubishi Gas Chemical Co., Ltd.] and 2.0 parts of sodium diphenyl ether disulfonate were emulsion-polymerized to obtain a copolymer emulsion (solid content 50% by mass). . The glass transition point of the polymer constituting this (A-3) copolymer emulsion is −10 ° C. Table 1 shows the formulation (parts).

  To 100 parts of the obtained (A-3) copolymer emulsion (in terms of solid content), 50 parts of polybutene used in Example 1, 0.5 part of antioxidant, and 0.02 part of colorant are added, An aqueous emulsion pressure-sensitive adhesive composition was obtained by adjusting the total solid content to 54% by mass. The viscosity of this aqueous emulsion-type pressure-sensitive adhesive composition was 12000 mPa · s. Table 3 shows the formulation (parts).

A water-based emulsion-type pressure-sensitive adhesive composition obtained by using, as a base material, a paperboard obtained by applying a water-based paint with an orange color to a commercially available general-purpose white paperboard having a thickness of 1 mm so that the mass after drying becomes 10 g / m ^2. Then, an adhesive layer was formed by coating on one surface of the base material to obtain an adhesive insect trap sheet of Comparative Example 3. In addition, about the application quantity of the water-based emulsion type adhesive composition, the mass after drying was set to 95 g / m < ² >.

[Comparative Example 4]
As component (a), 99.8 parts of 2-ethylhexyl acrylate, as component (b), 0.2 parts (100 parts in total) of acrylic acid similar to that used in Example 1, and 0.3 per ammonium sulfate Part and 1.5 parts of sodium diphenyl ether disulfonate were emulsion-polymerized to obtain a copolymer emulsion (solid content 50% by mass). The glass transition point of the polymer constituting this (A-4) copolymer emulsion is −60 ° C. Table 1 shows the formulation (parts).

  50 parts of polybutene used in Example 1 and 0.5 part of antioxidant are added to 100 parts (in terms of solid content) of the obtained (A-4) copolymer emulsion, and the total solid content is 54 masses. %, And an aqueous emulsion type pressure-sensitive adhesive composition was obtained. The viscosity of this aqueous emulsion-type pressure-sensitive adhesive composition was 11000 mPa · s. Table 3 shows the formulation (parts).

A water-based emulsion-type pressure-sensitive adhesive composition obtained by using, as a base material, a paperboard obtained by applying a water-based paint with an orange color to a commercially available general-purpose white paperboard having a thickness of 1 mm so that the mass after drying becomes 10 g / m ^2. Then, an adhesive layer was formed by coating on one surface of the base material to obtain an adhesive insect trap sheet of Comparative Example 4. In addition, about the application quantity of the water-based emulsion type adhesive composition, the mass after drying was set to 95 g / m < ² >.

  As can be seen from the measurements and evaluations in the adhesive trapping sheets of Examples 1 to 4 and Comparative Examples 1 to 4, the adhesive trapping sheets of Examples 1 to 4 have excellent adhesive force and a high probe tack, and are attached to pests. It was excellent in properties. On the other hand, the water-based emulsion-type pressure-sensitive adhesive compositions of Comparative Examples 1 to 4 show low values in adhesive strength, low probe tack, and poor pest adhesion (comparative example 2 is slightly poor). Met.

  The adhesive insect trap sheet of the present invention has an adhesive layer having excellent adhesive force and an adhesive layer with improved tackiness, in particular, a probe for instantaneous adhesiveness. For example, a greenhouse or an orchard It can be suitably used as an adhesive insect trap sheet for attracting and trapping harmful insects in the field of crop cultivation such as.

It is a top view showing typically one embodiment of an adhesion insect trap sheet of the present invention. It is a side view of the adhesion insect trap sheet | seat shown to Fig.1 (a). It is a perspective view which shows typically other embodiment of the adhesion insect trap sheet | seat of this invention. It is a perspective view which shows typically other embodiment of the adhesion insect trap sheet | seat of this invention. It is a perspective view which shows typically other embodiment of the adhesion insect trap sheet | seat of this invention.

Explanation of symbols

1: Adhesive insect trap sheet, 1a: Adhesive insect trap sheet (adhesive trap insect sheet stacked on top), 1b: Adhesive trap insect sheet (second layer adhesive trap insect sheet), 2: Base material, 3: Adhesive layer, 4 : Through hole, 5: Container.

Claims (8)

An adhesive insect trap sheet comprising a substrate and an adhesive layer disposed on at least one side of the substrate,
The pressure-sensitive adhesive layer is (a) 65 to 99.5 parts by mass of (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms, and (b) other copolymerizable monomer 0.5. A glass transition point obtained by emulsion polymerization of a monomer component containing ~ 35 parts by mass (however, (a) + (b) = 100 parts by mass) contains a polymer having a glass transition point of −75 to −20 ° C. ( A pressure-sensitive insect trap sheet comprising an aqueous emulsion pressure-sensitive adhesive composition containing A) 100 parts by mass of a copolymer emulsion (in terms of solid content) and (B) 5 to 150 parts by mass of polybutene. The pressure-sensitive insect capturing sheet according to claim 1, wherein (B) polybutene of the aqueous emulsion-type pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer contains polybutene represented by the following formula (1) and / or (2).

(In the formula (1), n is an integer of 4 to 45)

(However, in Formula (2), n is an integer of 4 to 45)   The adhesive insect trap sheet according to claim 2, wherein n is an integer of 10 to 40 in the polybutene represented by the formula (1) and / or (2).   The pressure-sensitive insect trapping sheet according to any one of claims 1 to 3, wherein the substrate has an orange color, a yellow color, or a blue color.   The pressure-sensitive insect trap sheet according to any one of claims 1 to 4, wherein the aqueous emulsion pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer further contains a colorant.   The pressure-sensitive insect trap sheet according to any one of claims 1 to 5, wherein the base material has a flat plate shape.   The pressure-sensitive insect trapping sheet according to claim 1, wherein the base material and the pressure-sensitive adhesive layer disposed on the base material are wound in a roll shape. The pressure-sensitive insect trapping sheet according to any one of claims 1 to 7, wherein a measurement value of the pressure-sensitive adhesive layer by a probe tack test in accordance with JIS Z0237 is 3 N / cm ² or more.

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