JP2001292688A - Insect-proof net with excellent weather resistance - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an insect net having excellent shielding effect and excellent weather resistance, which is used by being extended to a screen door or an agricultural house. SOLUTION: An acrylic paint film is formed on a net ground surface made of polyolefin monofilament,
Alternatively, it is an insect-resistant net having excellent weather resistance, which is formed by weaving a yarn in which a coating film of an acrylic paint is formed on the surface of a polyolefin monofilament.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insect repellent net which is used by being extended to a household office screen or an agricultural house.

[0002]

2. Description of the Related Art Conventionally, nets for screen doors, which are often used for insect repellent nets, are made of a thermoplastic resin as a material and form monofilaments having a fineness of about 400 to 800 deniers. A net fabric formed by plain weaving or leno weaving of about 20 mesh is generally used. As this thermoplastic resin, polyvinyl chloride, polyethylene, polypropylene, polyester and the like have been used,
Polyvinyl chloride has environmental problems such as the generation of toxic gas during waste incineration, and in recent years polyolefin has been widely used because of its easy fiber formation and light weight and low cost. ing. However, monofilaments using polyolefin alone as a raw material have poor weather resistance, so there is a problem in that they can be used as screens for a long period of time. In addition, the cross section of the monofilament is not a perfect circle, and when woven as a net, it is perceived as uneven color due to irregular reflection of light, resulting in poor product value. There is a problem that the interior can be easily seen from the outside through the.

[0003]

In order to solve the above-mentioned problems, nets for screen doors, in which a metal coating film is formed on one side of the net by sputtering, have been manufactured, but they have an indoor shielding effect. However, the reflection of light was too strong, and it was not preferable from the viewpoint of aesthetics from the outside, and the cost was high. The present invention has been made in view of the above problems, and an object of the present invention is to provide an insect-repellent net that is excellent in appearance, has a shielding effect, is inexpensive, and has excellent weather resistance.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to an insect-resistant net having excellent weather resistance in which an acrylic paint film is formed on the ground surface of a polyolefin monofilament net, or a polyolefin monofilament surface. It is an insect-proof net with excellent weather resistance made by weaving a yarn on which a coating film of an acrylic paint is formed.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
Polyolefin monofilament used in the present invention,
It is a monofilament formed using a polyolefin by a known production method. As polyolefin,
Although not particularly limited, those having a stretching effect and obtaining high strength are preferable, and specific examples include polypropylene and high-density polyethylene.

The polyolefin has a melt flow rate (hereinafter abbreviated as MFR) of 0.1 to 20 g / 10 mi.
n is preferable, and 0.5 to 5 g / 10 min is more preferable. If the MFR is less than 0.1 g / 10 min, the moldability is poor, and if it exceeds 20 g / 10 min, the strength is poor as a monofilament used for a screen net.

The monofilament fineness of the formed monofilament is preferably from 100 to 1,000 dtex (hereinafter abbreviated as dt), more preferably from 200 to 500 dt.

[0008] Using the above monofilament for warp yarn,
Plain weave and entangled weave based on a mesh of 10 to 30 mesh,
A net is formed by Russell knitting or the like.

In the present invention, a coating film of acrylic paint is formed on the surface of the monofilament forming the net, or a coating film of acrylic paint is formed on the ground surface of the net woven with the monofilament. .

The acrylic paint of the present invention is not particularly limited, but has an acrylic resin as a main chain, and may be an aqueous paint or a solvent paint. Examples of the acrylic resin include homopolymers and copolymers of alkyl (meth) acrylate, and copolymerization of at least one of these with an α, β-ethylenically unsaturated monomer containing a crosslinkable functional group. A modified (meth) acrylic acid alkyl ester copolymer obtained by the above method is used.

The alkyl (meth) acrylate specifically includes methyl (meth) acrylate, ethyl (meth) acrylate, normal butyl (meth) acrylate, and normal (meth) acrylate. And isopropyl ester.

The α, β-ethylenically unsaturated monomer containing a crosslinkable functional group is, specifically, an α, β-unsaturated dicarboxylic acid such as maleic acid, fumaric acid, itaconic acid or anhydride thereof. Substances, or acrylic acid, methacrylic acid,
Carboxylic acid group-containing monomers such as unsaturated monocarboxylic acids such as vinyl acetic acid, glycidyl acrylate, glycidyl methacrylate, epoxy group-containing monomers such as monoglycidyl itaconate, 1-hydroxypropyl (meth) acrylate, Examples include hydroxyl group-containing monomers such as 2-hydroxypropyl (meth) acrylate and hydroxyethyl (meth) acrylate.

The acrylic paint is prepared by adding a solid component, a film forming aid, an additive, an organic solvent, water and the like to the acrylic resin aqueous solution, aqueous dispersion or solvent solution. If necessary, an ultraviolet absorber or a light stabilizer, which is a weathering agent, may be added to the paint.

The acrylic paint may be an acrylic urethane paint whose weather resistance is improved by a urethane bond obtained by reacting an acrylic polyol and a polyisocyanate, or an alkoxysilyl group having a side chain on an acrylic resin having a main chain. And acrylic silicone-based paints having improved weather resistance due to siloxane bonds obtained by introducing siloxane bonds. These weather-resistant paints are also preferably used. Specifically, as an acrylic urethane paint, polyurethane ace (trade name: manufactured by Kansai Paint Co., Ltd.)
And silicone top paint (trade name: Nippon Paint Co., Ltd.).

As a method of forming a coating film from the coating material, it is preferable to cover a wide area around the monofilament. In particular, when applying to the net ground surface, treatment from both front and back surfaces is preferable, and as an application method, a method such as a spray method, an immersion method, or a brushing method of an acrylic resin-based water-based paint or a solvent-based paint can be employed. A touch roll method is preferable as a method for industrially uniform application. The thickness of the coating film is preferably 1 to 10 μm as a dry film thickness, and more preferably 3 to 5 μm. When the thickness is less than 1 μm, the coating effect is not remarkable in appearance, and the effect of improving the weather resistance cannot be obtained.

Before applying the coating material to the net, it is preferable to apply a surface treatment such as a corona discharge treatment or a plasma treatment on the surface thereof in advance in order to improve the adhesion to the coating material.
Further, a primer layer may be applied to the surface of the net as a surface treatment agent.

The polyolefin and acrylic resin of the present invention contain an antioxidant, a dispersant, a lubricant, an antistatic agent, a pigment, an inorganic filler, a crosslinking agent, a foaming agent, a nucleating agent, without departing from the spirit of the present invention. And other commonly used additives.

[0018]

EXAMPLES Polypropylene (MFR = 1.2 g / 10 m)
Using a monofilament having a fineness of 450 dt and a density of 20 × 20 / inch, a plain weave net was formed. After performing a corona discharge treatment and a primer treatment on the surface of this net, an acrylic paint was formed to a thickness of 5 μm by a touch roll method. The obtained net was suitable for use as an insect-proof net to be attached to a screen door, without fuzzing or uneven color of a monofilament, and having an effect of shielding from outdoors. In addition, the result of the weatherometer test showed that
73kg, elongation 28.9%, strong 920k after 250Hr
g, elongation 18.5%, strength after 490 hours 490 kg, elongation 10.9%. This is because the unpainted product is a blank with a strength of 1606 kg, an elongation of 26.6%, a strength of 401 kg after 250 hours, an elongation of 3.8%, and a strength of 14 k after 500 hours.
g, elongation is 1.2%, and the weather resistance is remarkably improved.

[0019]

As described above, the insect repellent net of the present invention is composed of inexpensive polyolefin monofilaments having excellent moldability, and has excellent appearance by forming a coating film composed of a specific paint on the monofilament surface. It has a shielding effect and is excellent in weather resistance.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D04B 21/00 D04B 21/00 B D06M 15/263 D06M 15/263 // D06M 101: 20 101: 20 F Terms (reference) 2B024 GA01 2B121 AA11 AA12 AA16 BB27 EA04 EA12 FA12 4L002 AA05 AB01 AC00 BB03 CB02 EA00 FA06 4L033 AA05 AB04 AC15 CA18 CA50 CA59 4L048 AA15 AA56 AB10 BA01 BA02 BA06 BA08 CA15 DA24 DA29

Claims (2)

[Claims] 1. An insect-resistant net having excellent weather resistance, wherein an acrylic paint film is formed on the ground surface of a net made of polyolefin monofilament. 2. An insect-resistant net having excellent weather resistance, which is obtained by weaving a yarn in which a coating film of an acrylic paint is formed on the surface of a polyolefin monofilament.