JPH0449907Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a net-like body for bird prevention.

(Prior art and problems) Birds, especially pigeons, are not hunted because they are a symbol of peace, so their numbers increase year by year.
As can be seen in newspaper reports about the damage caused to people and their homes, the area affected is expanding year by year and is becoming a public nuisance. As a means to prevent these harms, it is necessary to spread a net or a film as disclosed in Japanese Patent Application Laid-Open No. 54-85963 on the entire condominium building or on the balcony or other places where pigeons nest or stay, or use wire netting. Currently, it is used for defense. However, synthetic resin nets or films are flammable, and once a fire breaks out, there is a risk that the entire building will be engulfed in flames. On the other hand, wire mesh has a heavy feel and has the problem of rusting.

(Means for solving the problems) The present invention is a bird prevention net made of yarn knitted net,
The threads constituting the net are made up of a large number of thin non-combustible filaments, and the bird repellent net is characterized in that a coating film containing a bird repellent is provided on the surface of the threads.

The nonflammable yarn of the present invention includes glass fiber, inorganic fiber such as rock wool, and heat-resistant synthetic fiber. The thread used is a bundle of multiple thin filaments. As for the mesh shape of the net-like body, a square mesh is shown as an example in FIG. 1, but other shapes such as a rhombus, a square mesh, and a rectangle can be used. As for these knitting methods, the case of an improved moji net has been exemplified, but a knotted net is durable, and other shapes such as a woven net may also be used. A lattice-like structure is preferable in terms of vertical and horizontal dimensional stability. After these knitted nets, a binding agent (adhesive) is applied to prevent mesh deformation and improve adhesion in post-processing.
Preferably, those processed by Preferred examples of suitable sizing agents include those containing as a main component a synthetic resin having self-extinguishing properties such as vinyl chloride. The mesh thread spacing is 10 x 10 m/
m to 80 x 80 m/m, but preferably 20 x 20
~50 x 50m/m, the thread is made by converging 50 to 400 fibers to a diameter of about 0.03 to 0.8mm, and then converging them again to a diameter of about 2 to 5m, which is the size of a bird. The shape of the net can also be determined as appropriate in terms of strength, taking into consideration the weight of the bird and the weight of the bird, and the impact upon collision.

The treatment method for applying a coating film containing a repellent is as follows:
For example, known coating methods such as dip coating and spray coating are used, but the preferred method is to mix the repellent with the synthetic resin and solvent used for the above-mentioned sizing agent and perform dipping at the same time as the sealing treatment. Can be mentioned. A repellent may be mixed with a convergence agent and applied to the fibers and then made into a net, or a repellent-containing paint may be applied after being made into a net. It goes without saying that it is also possible to make the synthetic resin colorful by adding a coloring agent as appropriate, and to improve weather resistance by adding an ultraviolet absorber to the resin.

Various types of bird repellents are known, such as visual repellents, olfactory repellents, and taste repellents, but in the present invention, visual repellents can primarily be used.
Visual repellents include dyes and pigments that are repellent to birds, such as yellow. Volatile malodorous compounds such as diallyl disulfide are known as olfactory repellents. Generally, olfactory repellents are used alone, such as by spraying them on fields, so they need to be non-volatile, but in the case of the present invention, they are mixed into the paint film, so they are easily volatile. It can be used even if it is of a sexual nature, increasing the range of selection. Other taste repellents such as tetramethylthiuram disulfide are also known, but their effectiveness is relatively low even when used in the present invention.

Repellents are mixed uniformly or non-uniformly into the so-called binder used to form a coating film. For example, in the case of an olfactory repellent, if several types of repellents are mixed together, the compatibility between the repellent and the binder can be improved. Due to differences in various factors, such as the timing at which each repellent is most effective, the odor of the bird net of the present invention changes during use, which may lead to a habitual reaction to the odor of birds. It also has the advantage of maintaining its bird-repellent properties over a long period of time.

(Effects of the invention) Since the present invention is constructed as described above, unlike the conventional flammable synthetic resin net, the net body is made of non-twisted fibers, so it is fire safe and does not rust. . Since the yarn of the present invention is made of a large number of thin nonflammable filaments, it has both strength and flexibility. Therefore, even when using a material that is essentially inflexible, such as glass fiber, it is possible to knit the net using threads that are thick enough to withstand large forces such as bird strikes. In addition, since it has an outer layer containing a repellent, birds will not fly in and stop there, so the purpose of bird prevention can be achieved. Also, if you use a mixture of visual repellents, olfactory repellents, taste repellents, or a mixture of various olfactory repellents as mentioned above, you can use one net for a long time. It is also possible to exhibit various bird-preventing effects.

[Brief explanation of the drawing]

FIG. 1 is a partial detailed plan view of a part of the bird control net of the present invention, and FIG. 2 is a schematic cross-sectional view taken along the line -- in FIG. 1. 1... Yarn, 2... Reticular body, 3... Paint film.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A bird-prevention net made of a knitted net of yarn, where the yarn constituting the rope is a convergence of many thin nonflammable filaments, and the surface of the yarn is A bird prevention net characterized by being provided with a coating film containing a bird repellent. 2. The bird prevention net according to claim 1, characterized in that the diameter of the convergent threads constituting the net is 2 to 5 mm, and the mesh spacing is 10 to 80 mm. 3. Bird net according to claims 1 and 2, characterized in that it is used for protection of buildings.