FR2468305A1 - Pendant adhesive coated insert trap - attractively coloured and opt. made from thin plastic sheet - Google Patents

Abstract

Insect trap is made as a solid or hollow pendant having one or more colours attractive to specific types of insect (aleurodes or liriomyza) and covered with a transparent or translucent film of adhesive, opt. applied as a double-sided adhesive coated tape. The body may be a flat panel or may resemble the size form of a natural fruit, with the adhesive coating having a matt or micro-embossed surface finish. Bodies are pref. made from paper of 200-400 g/sq. m or from plastic film 150-250 microns thick. Traps pref. have a yellowish green colour characteristic of 5.200-6.100 angstroms. Pref. the adhesive is acrylic-based and slowly hardens in air, various parts of the coating being exposed successively by removing portions of a masking tape.

Description

Novel non-chemical insecticidal device and method of manufacture

 The invention relates to insecticidal devices.

 More particularly, it relates to a non-chemical insecticidal device taking advantage on the one hand the attraction exerted on certain insects by specific colors and on the other hand the possibility of destroying these insects by engulfing.

 It is known that some insects are attracted by a particular color or range of colors that vary from one insect species to another. It has already been proposed to use this attraction to capture certain insects which are then destroyed by appropriate means, such as for example insecticides.

 It has also been proposed in cases of infestation with insecticide-resistant insects such as whiteflies or whiteflies, to install, in infested places, panels of appropriate color, for example yellow in the case of whiteflies, provided, at the time of their use, glue deposited for example by spraying with an aerosol can, in order to destroy by engulfing attracted insects.

 However such devices are not exploitable industrially because it is unreasonable to consider that a farmer who would use such panels is obliged to engage in engulfing at the time of their establishment. In addition, the use of aerosol cans, especially in enclosed greenhouses, may present certain hazards and / or be detrimental to crops.

 The invention therefore aims to overcome these disadvantages by providing a non-chemical insecticide device very effective, delivered ready for use and presenting no danger to the environment or crops to protect.

 These objects and advantages have been achieved by the invention which relates to an insecticidal device obtained by the unexpected combination of a support of a particular color and an adhesive tape.

 The invention more particularly relates to an insecticidal device having, at least partially, a color chosen from the range of colors to which the insects to be destroyed are sensitive, characterized in that it is provided, at least partially, on its colored parts. an adhesive tape comprising a support provided with an adhesive on its face in contact with the device, which adhesive tape is chosen so that it is able to leave on the parts of the device in contact with it, an adhesive layer translucent able to retain said insects, after removal of its support.

 The invention also relates to the same device as it is at the time of its use, that is to say an insecticidal device having, at least partially, a color chosen from the range of colors to which insects to destroy are sensitive and provided, at least partiallyvsur on its colored parts, a translucent adhesive layer capable of holding said insects, characterized in that said adhesive means has been provided on said device by means of an adhesive tape.

 The shape of the device according to the invention does not play a determining role. and can be arbitrary insofar as it makes it easy to tear off, at the moment of use, the protective film constituted by the support of the adhesive.

 However, according to a preferred embodiment, this device has the shape of a thin rectangular plate, hereinafter called panel and preferably bearing on both sides the chosen color.

 According to another preferred embodiment, the device according to the invention has a cylindrical shape and is preferably constituted so that it can be flattened for transport.

 According to yet another preferred embodiment, the device according to the invention has the dimensions and the shape of a large fruit, in particular substantially spherical.

 The colored surfaces and provided with the adhesive are advantageously flat or microgaufrées.

 The device according to the invention may consist of any material capable of receiving the chosen color and a translucent adhesive layer obtained from an adhesive tape. However, it is advantageously constituted by paperboard preferably having a grammage of 200 to 400 g / m2 or by a plastic material preferably having a thickness of 150 to 250 microns.

The color present, at least partially, the device according to the invention depends essentially on the type of insects it is intended to destroy. As an indication, in the following table, the colors and possibly the ranges of wavelengths which should be used to attract certain relatively common species of insecticides are given in the following table:

<tb> family <SEP> genus <SEP> species <SEP> color <SEP> Lengths,
<tb><SEP> waves <SEP> (A) <SEP>
<tb> Homoptè- <SEP> Aleyradi- <SEP> Aleurode <SEP> green-yellow <SEP> 5200-6100
<tb> res <SEP> dae <SEP> (Trialeurode
<tb><SEP> vaporarium <SEP>) <SEP>
<tb><SEP> Aphis <SEP> yellow <SEP>
<tb><SEP> Aphididae <SEP> gulae
<tb> Aphis <SEP> fabae <SEP> yellow
<tb><SEP> Anastrepha <SEP> orange <SEP> 5800-5900
<tb><SEP> Tephriti <SEP> suspensa <SEP> 520
<tb> Diptera <SEP><SEP> Dacus <SEP> oleae <SEP> yellow <SEP> 5200-5800
<tb><SEP> Musca <SEP> autos <SEP> white
<tb><SEP> nalis
<tb><SEP> Rhagoletis <SEP> yellow <SEP> 5200-5800
<tb><SEP> panonella
<tb>. <SEP> ~ <SEP> Liriom <SEP> za <SEP> aune <SEP> 5200-6100
<tb> Coleop- <SEP> Curculio- <SEP> Anthonomus <SEP> bleurver
<tb> tears <SEP> nidae <SEP> grandis <SEP> dab <SEP> to <SEP> 5000-5250
<tb><SEP> green <SEP> blue
<SEP> hearth
<tb> Heterop- <SEP> Lygus <SEP> white <SEP> (or
<tb> tere <SEP> colorless)
<tb> Hymenop- <SEP> Tenthre- <SEP> Hoplocampa <SEP> white
<tb> temes <SEP> dinidae <SEP> testudinea <SEP> (ne <SEP> reflexion
<tb><SEP> pounding
<tb><SEP> not <SEP> (UV) <SEP>
<Tb>
The color intended to attract insects may be imparted to the device by coating or preferably, when the device is made from white paperboard, by off-set or heliographic staining or even by coloring in the mass when one has use of plastic.

 The adhesive tape is chosen so that it is able to leave, on the parts of the device in contact with it, a transparent or translucent adhesive layer not modifying the physical or chemical properties of the color of the device and having no repellent effect on the insects concerned.

 Such a ribbon is advantageously constituted by a waxed or silicone paper support covered, on one of its faces, with an adhesive that dries slowly in air, in particular with humid and hot air in the case of devices intended for use in greenhouses. This adhesive is preferably of acrylic origin.

As adhesive tapes that can be used according to the invention, mention may be made in particular of the "transfer ribbon" of the 3M company sold under the trademark SCOTCH, in particular under the references 465, 468 and 927, and the "double-sided" tape of the
Soc summer Novacel, commercialized under the trademark RUBA
FIX, especially under the references E 3510 and E 6374. These two types of adhesive tapes are made of conical paper covered with a transparent acrylic adhesive having a thickness of 50 to 80 microns.

 Referring to the accompanying figure plate - Figure 1 shows the device according to the invention when it is in the form of a plate or panel; - Figure 2 shows the device according to the invention when it has a cylindrical shape; and - Figure 3 shows the device according to the invention when it has a substantially spherical shape.

 In Figure 1 there is a "plate" or insecticide panel provided with an adhesive tape whose protective film is partially cut away, showing the layer of adhesive deposited on the device. This plate is intended to be used for example in greenhouses, in particular when it is colored brightly to protect tomato plants or certain flowers cultivated in a greenhouse against whiteflies or whiteflies or against liriomyza or leafminers of ornamental crops.

It can also be used in outdoor crops. It advantageously has a rectangular shape, its width being between 25 and 50 centimeters and its length between 50 and 70 centimeters. This plate is advantageously provided in its corners and possibly on its edges with holes, for example four in number, to hang easily, for example using hooks.

 The insecticidal device of FIG. 1 can be advantageously manufactured by simultaneous plating using rolls, the adhesive tape chosen on each of the faces of a precolored plate of the material to constitute the device, the adhesive being on each side in contact with each other. with the plate.

The rollers for plating the adhesive are advantageously cylindrical, with a smooth or micro-cellular surface depending on the nature of the surface that is to be printed on the device.
When the veneer is finished, panels are cut to the desired dimensions, then eventually punched to allow snapping.

 For example, in the case of panels intended to capture whiteflies in greenhouses, sheets of white paperboard with a width of 2 meters and a weight of about 300 g / m, which can be colored, can be used as the material. in yellow by an off-set or heliographic process. These plates are then pressed between two strips of adhesive tape, by means of rolls, and massaged to form 33.3 x 60 cm panels.

 Figure 2 shows a mode. embodiment of the device according to the invention more specifically adapted for use in apartment or balcony cultures for example. This device is designed in such a way that it can be flattened for transport. Here again, the protective film of the adhesive is slightly torn off. To achieve this form of the device, it is possible to proceed as indicated above by however only plating the adhesive tape on one of the faces of the material plate intended to constitute the device. After plating the adhesive, a strip is cut having the width of the cylinder height and a length substantially greater than its circumference, then the two ends of this strip are joined.

 Preferably, the device thus obtained is provided with a system which makes it possible, for example, to give it a flattened shape for transport and marketing in particular, or a rigid cylindrical shape, in particular at the time of use and for a fastening means, as shown in Figure 2.

 Such a cylinder preferably has a height of about 20 cm and a diameter of 15 to 30 cm.

 Figure 3 shows a device according to the invention of spherical shape that is carried out in a manner similar to that previously indicated in the case of Figure 2, striving to make it look like a large fruit. Such a device is advantageously used in certain ornamental crops, for example in apartments, or more particularly to destroy certain fruit parasitic insects such as those of the rhagoletis species (on apples, in particular).

Installation of the device according to the invention and results obtained.

 Tests have been carried out using in sheltered vegetable and ornamental crops panels of the type shown in FIG. 1. These panels have been placed vertically so that their lower part is always at the level of the upper part. of the culture to be protected.

 When the panels were put in place, the protective film coming from the adhesive tape was torn off on each side to put them into service.

During the growth of the crop, the level of the panels was periodically raised, which was facilitated by the use of hooks.

 It was found that a panel measuring approximately 33 x 60 cm protects a circular area of 12m2 in the presence of a heavy infestation and 40 m2 in the presence of a low infestation, this for one to two months.

Claims (13)

 REVENDICATIDNS  An insecticidal device having, at least partially, a color chosen from the range of colors to which the insects to be destroyed are sensitive, characterized in that it is provided, at least partially, on its colored parts, with an adhesive tape comprising a support provided with an adhesive on its face in contact with the device, which adhesive tape is chosen so that it is able to leave on the parts of the device in contact with it, a translucent adhesive layer capable of holding said insects, after removal of its support. 2. Insecticidal device having, at least partially, a color selected from the range of colors to which the insects to be destroyed are sensitive, and provided, at least partially, on its colored parts, a translucent adhesive layer capable of retaining said insects characterized in that said adhesive means has been provided on said device by means of an adhesive tape. 3. Device according to claim I or 2, characterized in that it has the shape of a rectangular plate of small thickness preferably bearing on both sides the chosen color. 4. Device according to claim I or 2, characterized in that it has a cylindrical shape and is preferably made of teBe so that it can be flattened for transport. 5. Device according to claim 1 or 2, characterized in that it has the size and shape of a large fruit, preferably spherical. 6. Device according to any one of claims 1 to 5, characterized in that the colored surfaces and provided with the adhesive are flat or microgaufrées. 7. Device according to any one of claims 1 to 6, characterized in that it consists of paperboard preferably having a basis weight of 200 to 400 g / m2 or a plastic material preferably having a thickness of 150 to 250 microns. 8. Device according to any one of claims 1 to 7, characterized in that said adhesive tape consists of a waxed or silicone paper support covered on one of its faces, a slowly drying adhesive to air, preferably of acrylic origin. 9. Device according to any one of claims 1 to 8, characterized in that it has a yellow-green color with a wavelength of 5.200 to 6.100 A. 10. Application of the device according to claim 9 for the destruction of whitefly and / or liriomyza.  11. Use of the insecticidal device according to any one of claims 1 to 9. 12. A method of manufacturing the insecticidal device according to claim 3, characterized in that it consists in 1 ") simultaneously plate, using rollers, ribbon  adhesive chosen on each side of a plate  precolored material to constitute the device  tif, the adhesive being on each face in contact with  the plaque; 2 ") cut into the product obtained panels to di  desired mensions; and 3) optionally punching said panels to allow  to be hanging. 13. A method of manufacturing the device according to claim-4, characterized in that it consists of 1 ") plaquer, using a roller, the chosen adhesive tape  on one of the faces of a matte plate of maté  must be the device, the adhesive being  in contact with the plate; 2 ") cut into the product obtained a strip having for  width the cylinder height and a sensi length  better than its circumference; 3) join both ends of this band; and 4) preferably provide the at-once-obtained device with a  system that allows it to be  flattened or cylindrical rigid shape and means  hooking.