JP3074256U - Insect net - Google Patents

Abstract

(57) [Summary] [PROBLEMS] Similar to conventional insect repellent nets, it can be used as a screen for doors and doors of various buildings, vehicles, tents, etc. including poultry farms and barns, and for shielding other doors. And dry dirt such as airborne dust and soot and so on, and easily fall off. SOLUTION: An insect net 10 woven using filament yarns 11 and 12 made of synthetic fibers has a good and drip-resistant property on both front and back surfaces made of ceramics formed by physical vapor deposition after weaving, and is transparent. It is covered with a soil coating 13.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to an insect repellent net used for shielding windows, entrances and other entrances and exits of buildings, vehicles and tents.

[0002]

[Prior art]

 As insect repellent nets to be stretched on the windows of buildings and screen frames at entrances and exits, those that are woven at a low density using monofilament or multifilament yarns of synthetic fibers colored in any color are known. . However, since this insect repellent net is composed of filament yarn of synthetic fiber, dry soil such as earth and sand, floating dust, and soot adheres, and is easily stained by dispersing and penetrating into the fiber. There was a problem that it was difficult to remove the dirt.

[0003] Furthermore, a filament yarn of the insect repellent net which is colored in dark color is used, and one side of the obtained net is coated with a corrosion-resistant metal film such as stainless steel or titanium so that the surface of the metal film faces the outdoors. When viewed from the inside through the insect net, the outdoor scenery can be seen through beautifully.On the other hand, when the indoor is seen through the insect net from the outside, the reflected light becomes strong and the indoor It is known that the surface is not visible, but in this case, since one side is covered with a metal film, the easiness of soiling and the improvement against soiling are insufficient.

[0004]

[Problems to be solved by the invention]

 This invention can be used for shielding various kinds of buildings, including poultry farms and barns, vehicles, tents, etc. windows and doorways, as well as the above insect repellent nets, as well as sediment and suspended dust. In addition, it is difficult for dry dirt such as soot to adhere, and even if it adheres, it can be easily removed by rainwater or water washing.

[0005]

Means for Solving the Problems The insect repellent net of the present invention is an insect repellent net woven using a filament yarn of a synthetic fiber, in which both front and back surfaces are made of ceramics formed by physical vapor deposition after weaving. It is characterized by having good drop characteristics and being covered with a transparent antifouling film.

[0006] The filament yarn used in the present invention is a monofilament yarn or a multifilament yarn made of synthetic fibers such as polyester, polyethylene, polypropylene, and nylon. 800 denier is preferred, and for multifilament yarns, 50 to 100 denier is preferred. In this invention, the filament yarn is colored in an arbitrary color in advance. The coloring is preferably performed by coloring the raw material at the stage of the spinning solution.

[0007] The above-described filament yarn may be used for warp and weft yarns in the same manner as in the past, and may be woven in a plain weave with a coarse density to form a net. Alternatively, the filament yarn may be supplied to a warp knitting machine to knit a large number of chain stitches, and weft yarns may be inserted in a zigzag shape and connected to form a net shape.

[0008] After drying the obtained reticulated knitted fabric according to a conventional method, physical vapor deposition such as vacuum deposition, sputter deposition, or ion plating is performed on the front and back surfaces thereof, and the warp, weft or knit constituting the reticulated knitted fabric is provided. The entire surface of the yarn is covered with a transparent antifouling film made of ceramics. This antifouling coating is made of a ceramic which is hard and can prevent the above-mentioned dry dirt from dispersing and penetrating into the interior of the fiber, and is hydrophilic and has a good drip property, such as titanium, tin and aluminum. Metal oxides, nitrides, carbides, silicon oxides and the like are exemplified. In particular antifouling coating of any one or more of Si O _2, Sn O ₂ and Ti O ₂ may dirt drop have excellent dripping properties, and silicon, tin and any one or more of titanium It is preferable because it can be easily formed by performing sputter deposition in the presence of a trace amount of oxygen using the above mixture as a target.

The obtained insect repellent net can be processed into a screen door and used in the same manner as before. At this time, since the filament yarn of the synthetic fiber is covered with the antifouling coating, it is possible to prevent the dry soil from passing through the antifouling coating and being dispersed and permeated into the filament. Therefore, the adhered dirt is also easy to remove. For example, when it gets wet with rain, it can be washed away with rainwater and can be easily washed away with running water.

The antifouling film is preferably formed by sputter deposition because it is easy to process and the film is excellent in durability. Further, the thickness is preferably from 2 to 200 nm, and if it is less than 2 nm, the desired effect cannot be obtained. If it exceeds 200 nm, transparency is lost and it is uneconomical. The resin constituting the filament yarn is optional, but polyester is particularly preferred in that it has excellent peel strength of the antifouling coating, and polyethylene is preferred in that it can be easily processed into a screen.

[0011]

[Embodiment of the invention]

Embodiment 1 FIG. 1 is a cross-sectional view of an insect net 10, in which 11 is a warp, 12 is a weft, and 13 is an antifouling coating. The warp yarn 11 and the weft yarn 12 are both monofilament yarns made of polyethylene terephthalate and having a fineness of 400 to 800 denier. The warp yarn 11 and the weft yarn 12 are woven into a plain weave with a coarse density, and have a net shape. Then, by performing sputter deposition on both the front and back surfaces of the net-like plain fabric, antifouling ceramics such as SiO ₂ , SnO ₂ , SiO ₂ and SnO ₂ are formed around the warp 11 and the weft 12. An antifouling coating 13 made of a mixture or TiO2 is formed to a thickness of ₂ to 200 nm.

[0012] During sputter deposition, the net-like plain fabric is spread and placed in a closed chamber, and an anode and a target are arranged so as to face the surface so that the anode is located between the plain fabric and the target. However, the target is made in advance into a plate shape by sintering silicon, tin or titanium. Then, the inside of the closed chamber is decompressed to a vacuum of about 5 × 10 ⁻⁵ Torr, and an inert gas such as argon is introduced to form an inert gas atmosphere of about 5 × 10 ⁻⁴ Torr. Subsequently, oxygen is introduced to form a mixed gas atmosphere of argon and oxygen at a pressure of about 2 × 10 ⁻³ Torr.

Thereafter, a DC voltage of 500 to 1000 V is applied between the anode and the target to cause glow discharge, and the generated argon ions collide with the target to strike silicon, tin or titanium from the target, thereby forming a net-like structure. Oxidized by oxygen in the mixed gas while scattering toward the plain fabric, the resulting SiO ₂ , Sn O ₂ or TiO ₂ is adhered to the surface of the net plain fabric, quenched, and rapidly cooled to obtain an amorphous structure antifouling film. 13 is formed. After the antifouling coating 13 of the surface is formed, to upside down the mesh knitted fabric, Si O ₂ on the back later in the same manner as described above to accordingly, Sn O ₂ or Ti O ₂ Tona Ru antifouling coating 13 To form

The target can be made of a mixture of silicon and tin to form an antifouling coating composed of SiO ₂ and Sn O ₂ . Further, the target Si O _2, Sn O ₂ or may be carried out sputtering under made in an inert gas atmosphere at a Ti O _2. In addition, at the time of the above-mentioned sputter deposition, it is preferable that the above-mentioned net-like plain fabric is cooled from the back surface with a water-cooled cylinder or the like to maintain the temperature at 100 ° C. or less.

[0015] At the time of the above-mentioned sputter deposition, two sets of a vapor deposition device including a water-cooled cylinder, an anode, and a target are installed in one closed chamber, and while the net-like plain fabric is spread and transferred, the first vapor deposition device is used. The antifouling coating 13 on the front surface can be formed, and then the antifouling coating 13 on the back surface can be formed by a second vapor deposition device. The work of decompression operation is reduced by half.

Embodiment 2 A knitting net 20 shown in FIG. 2 is knitted by a warp knitting machine using a 50-100 denier multifilament yarn made of flexible polyethylene as a knitting yarn. In FIG. 2, reference numeral 21 denotes a warp made of the above-described knitting yarn, which is arranged on the front reed to form a number of chain knitting rows, and 22 is a weft made of the above-described knitting yarn, which is arranged on the rear reed. Are inserted in a zigzag manner between the chain stitch rows composed of the warp yarns 21 to form a square stitch. After knitting completion, by performing the same manner sputter deposited on both sides, the Si O _2, Sn O _2, antifouling coatings consisting of S i mixture or Ti O ₂ in O ₂ and Sn O _2. 2 to It is formed to a thickness of 200 nm.

[0017]

【Example】

Example 1 In FIG. 1, a plain woven fabric for a insect repelling net (warp density: 7 yarns) was woven using green colored polyethylene terephthalate monofilament yarn (620 denier) for both the warp yarn 11 and the weft yarn 12. / Cm, weft density: 7 yarns / cm), an antifouling coating 13 made of SiO ₂ and having a thickness of 5 nm was formed by sputter deposition on both surfaces to obtain an insect net 10 of the example. However, the above sputter deposition was performed using a silicon plate as a target in a closed chamber under a mixed gas atmosphere of oxygen and argon (pressure: about 1 × 10 ⁻³ Torr).

The obtained antifouling insect net (Example) and the insect net having no antifouling coating (Comparative Example) are each attached to a square window screen frame to form a screen door, and each of them is outdoors. It was left for one month, and the stain condition after one month was visually compared. As a result, the example was clearly less stained than the comparative example. Then, the screen doors of the Example and Comparative Examples were washed with water from the end of a hose connected to a water tap, and washed. The comparative example required detergent and brushing.

Further, the insect net 10 of the above embodiment was cut into a size of 10 cm in width and 30 cm in length to prepare a sample, and a commercially available adhesive tape (2 cm in width and 30 cm in length) was placed on the sample in parallel with the length direction. Then, one end of the tape was adhered with only 10 cm left, and this one end was peeled off with the hand held. The presence or absence of SiO ₂ adhering to the adhesive tape was visually inspected, and no SiO ₂ was peeled off.

[0020]

[Effects of the Invention] As described above, in the insect repellent net according to the present invention, the entire surface of the filament yarn constituting the net is coated with a transparent antifouling film having good drip characteristics made of ceramics. Dry dirt such as earth and sand, floating dust, smoke, etc. is hard to adhere, and even if it adheres, it can be easily removed by rainwater or water washing, and it has the same appearance as a normal insect net without an antifouling coating. I have. In particular, the insect repellent net according to claim 2 is limited in that the insect repellent coating is made of one or more of SiO ₂ , Sn O _2, and TiO ₂ , so that dry dirt is hardly adhered, and the dirt is particularly difficult. The drop is good. In addition, the insect repellent net according to claim 3 is one in which the antifouling film is formed to a thickness of 2 to 200 nm by sputter deposition, so that it is difficult to peel off, has excellent durability, has good transparency, and It is economical.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is an organization diagram of a knitted fabric according to a second embodiment.

[Explanation of symbols]

10: insect net, 11: warp, 12: weft, 13: antifouling coating, 20: warp knit, 21: warp, 22: weft

Claims (3)

[Utility model registration claims] 1. An insect repellent net knitted and woven using a filament yarn of a synthetic fiber, the front and back surfaces of which are made of ceramics formed by physical vapor deposition after knitting, have a good drip characteristic and a transparent antifouling coating. An insect repellent net, characterized by being coated with: 2. The insect repellent net according to claim 1, wherein the ceramic comprises at least one of SiO ₂ , Sn O ₂ and TiO ₂ . 3. The antifouling coating is formed by sputtering deposition.
The insect net according to claim 2, which is formed to a thickness of 200 nm.