Polyester woven gray fabric with insect prevention function

Abstract

The invention relates to the technical field of terylene woven grey cloth, and discloses terylene woven grey cloth with an insect prevention function, which comprises an inner high-density woven surface layer, a middle powder storage layer and an outer breathable surface layer which are connected in sequence, the middle powder storage layer comprises a carrier layer and an insect prevention powder layer arranged on the surface of the carrier layer in an adsorption mode, and the insect prevention powder layer can be reloaded along with changes of external conditions. The insect prevention powder can be repeatedly loaded in a simple powder scattering and illumination heating mode, the cloth can be used for multiple times even after being washed for multiple times, and the life cycle of the product is effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of polyester woven grey fabrics, and particularly to a polyester woven grey fabric with insect-proof function. Background Art

[0002] With the growth of global climate change and the demand for warehousing and logistics, the damage of pests (such as clothes moths, mites, cockroaches, etc.) to textiles, food storage, and outdoor equipment is becoming increasingly serious. According to statistics from the Food and Agriculture Organization of the United Nations (FAO), the annual loss of textiles due to pests exceeds $5 billion, and the food loss is as high as 30%. Traditional insect-proof textiles mainly achieve the insect-proof function through chemical impregnation, physical barrier, or natural material compounding, but there are still the following technical bottlenecks:

[0003] Short-acting nature of chemical insecticides: Chemical agents such as permethrin and pyrethroids are volatile, and the insect-proof rate drops below 50% after 5 washes (tested according to GB / T 24253-2009).

[0004] Instability of natural insect-proof materials:

[0005] Plant extracts (such as eucalyptus oil, azadirachtin) are easily decomposed by heat, and the insect-proof period is shortened to 7 - 10 days at 40°C (compared with 30 days for chemical agents).

[0006] Economic and environmental problems of non-reusable:

[0007] Disposable insect-proof textiles (such as mothproof bags) need to be replaced frequently, increasing the life cycle cost of a single product.

[0008] Therefore, there is an urgent need in the current market for a functional textile with long-acting, environmental protection, and reusable loading of insect-proof active ingredients. Summary of the Invention

[0009] The purpose of the present invention is to solve the problems existing in the prior art, and to provide a polyester woven grey fabric with insect-proof function.

[0010] To achieve the above purpose, the present invention adopts the following technical solutions:

[0011] A polyester woven grey fabric with insect-proof function, comprising an inner high-density woven surface layer, an intermediate powder storage layer, and an outer breathable surface layer connected in sequence;

[0012] The intermediate powder storage layer includes a carrier layer and an insect-proof powder layer adsorbed on the surface of the carrier layer, and the insect-proof powder layer can be reloaded according to changes in external conditions.

[0013] Preferably, the carrier layer includes a light-responsive adhesive layer, which is composed of carbon nanotubes coated with polydopamine and hot melt adhesive, and the mass ratio of carbon nanotubes to hot melt adhesive is 1:5 - 1:10.

[0014] Preferably, under sunlight irradiation, the carrier layer softens and its viscosity increases, achieving the adhesion of the insect-proof powder layer.

[0015] Preferably, the outer breathable surface layer is a gradient pore size woven structure, including:

[0016] Surface open area: diamond-shaped mesh holes formed by plain weave;

[0017] Powder guiding channel: a V-shaped groove formed by twill weave, penetrating through the outer layer to the middle powder storage layer.

[0018] Preferably, the aperture of the diamond-shaped mesh holes is between 200μm and 500μm, and the area accounts for 60%-80% of the area of the outer breathable surface layer.

[0019] Preferably, the groove width of the V-shaped groove is between 100μm and 200μm, and the depth is between 50μm and 100μm.

[0020] Preferably, the insect-proof powder layer uses powdered pyrethrin or azadirachtin, the powder particle size is less than 100μm, and it can enter the carrier layer along the powder guiding channel by gravity or slight vibration.

[0021] Preferably, the insect-proof powder of the insect-proof powder layer uses Fe 3 O 4 nanoparticles to form a coating layer with stearic acid.

[0022] Preferably, the carrier layer further includes nickel-plated polyester staple fibers embedded in the carrier layer;

[0023] When irradiated by sunlight, while the photo-thermal responsive adhesive softens and wraps the insect-proof powder, the magnetic attraction fiber net generates a directional magnetic field to restrict the powder distribution.

[0024] Preferably, the outer breathable surface layer is a polyester monofilament woven layer with a light transmittance ≥70%, the monofilament diameter ≤20μm, and the warp density is 80-100 ends per inch.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] When in use, the present invention can repeatedly load the insect-proof powder by simple powder sprinkling and light heating. Even after multiple water washes, the fabric can be used multiple times, effectively extending the product life cycle. Description of the Drawings

[0027] Figure 1 It is a composition schematic diagram of a polyester woven grey fabric with insect-proof function proposed by the present invention.

[0028] In the figure: 1. Inner high-density woven surface layer; 2. Intermediate powder storage layer; 3. Outer breathable surface layer; 4. Insect-proof powder layer; 5. Carrier layer; 6. Surface open area; 7. Powder guiding channel. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] Refer to Figure 1 , a polyester woven grey fabric with insect-proof function, including an inner high-density woven surface layer 1, an intermediate powder storage layer 2 and an outer breathable surface layer 3 which are sequentially connected and arranged;

[0031] The intermediate powder storage layer 2 includes a carrier layer 5 and an insect-proof powder layer 4 adsorbed on the surface of the carrier layer 5, and the insect-proof powder layer 4 can be reloaded according to changes in external conditions.

[0032] When the present invention is in use, the insect-proof powder can be repeatedly loaded by simple powder spreading and light heating. Even after multiple washes, the fabric can be used multiple times, effectively extending the product life cycle.

[0033] The specific reloading process is as follows:

[0034] (a) Uniformly spread the insect-proof powder on the surface of the outer breathable surface layer 3;

[0035] (b) Assist the powder to fall along the powder guiding channel 7 by mechanical vibration with a frequency of 5 - 10 Hz and an amplitude of 1 - 3 mm;

[0036] (c) Irradiate in natural light for 20 - 40 minutes, or heat to 50 - 60 °C for 10 minutes to activate the bonding function of the carrier layer 5;

[0037] (d) The insect-proof powder forms an insect-proof powder layer 4 on the carrier layer 5.

[0038] In this embodiment, the carrier layer 5 includes a photo-responsive adhesive layer, which is composed of carbon nanotubes coated with polydopamine and a hot melt adhesive. The mass ratio of carbon nanotubes to the hot melt adhesive is 1:5 - 1:10. When irradiated by sunlight or heated (≥50 °C), the photo-thermal responsive adhesive softens and wraps the insect-proof powder, and at the same time, the magnetic fiber net generates a directional magnetic field to restrict the powder distribution.

[0039] In this embodiment, the outer breathable surface layer 3 is a gradient pore size woven structure, including:

[0040] Surface open area 6: a diamond-shaped mesh hole formed by a plain weave;

[0041] Powder guiding channel 7: A V-shaped groove formed by twill weave, running through the outer layer to the intermediate powder storage layer 2.

[0042] In this embodiment, the aperture diameter of the diamond-shaped mesh holes is between 200μm and 500μm, and the area accounts for 60%-80% of the area of the outer breathable surface layer 3;

[0043] The groove width of the V-shaped groove is between 100μm and 200μm, and the depth is between 50μm and 100μm; the insect-proof powder layer 4 uses powdered pyrethrin or azadirachtin, in which the active ingredient accounts for 60-80%, and the powder particle size is less than 100μm;

[0044] The diamond-shaped mesh holes provide large openings for the initial distribution of powder spreading, and the aperture diameter is larger than the powder particle size to avoid blockage;

[0045] The V-shaped powder guiding channel 7 utilizes the geometric guiding property of the twill weave to guide the powder to the intermediate layer, and the channel width matches the powder particle size to prevent jamming.

[0046] Through gravity or slight vibration, the insect-proof powder can enter the carrier layer 5 along the powder guiding channel 7, and under the limitation of size, it is difficult for the insect-proof powder to fall out from the V-shaped groove after entering the carrier layer 5.

[0047] In this embodiment, the insect-proof powder of the insect-proof powder layer 4 uses Fe 3 O 4 nanoparticles and stearic acid to form a coating layer with a thickness of 1-5μm, and the powder saturation magnetization intensity ≥ 30emu / g, Fe 3 O 4 The outer shell provides controllable magnetism, and the stearic acid coating reduces the van der Waals force between powders and improves fluidity.

[0048] In this embodiment, the carrier layer 5 further includes nickel-plated polyester staple fibers embedded in the carrier layer 5, with a diameter of 20μm - 50μm and a magnetic induction intensity of 0.01 - 0.05T;

[0049] When irradiated by sunlight, while the photo-thermal responsive adhesive softens and wraps the insect-proof powder, the magnetically attracted fiber mesh generates a directional magnetic field to constrain the powder distribution and prevent the powder from agglomerating or shifting in the carrier layer 5.

[0050] In this embodiment, the outer breathable surface layer 3 is a polyester monofilament woven layer with a light transmittance ≥ 70%, the monofilament diameter ≤ 20μm, and the warp density is 80 - 100 threads per inch.

[0051] Example:

[0052] Household insect-proof curtain: Users can update the insect-proof effect by regularly spreading powder and patting, without disassembling and cleaning;

[0053] Outdoor insect-proof tent: Automatically fixes and replenishes insect-proof powder through sunlight irradiation, adapting to the wild environment;

[0054] Agricultural insect-proof cover cloth: Mechanical vibration assists in large-scale powder loading to improve operation efficiency.

[0055] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A polyester woven fabric with insect-proof function, characterized in that: It comprises an inner high-density woven surface layer (1), a middle powder storage layer (2) and an outer breathable surface layer (3) which are sequentially connected; The intermediate powder storage layer (2) comprises a carrier layer (5) and an insect-proof powder layer (4) adsorbed and arranged on the surface of the carrier layer (5); the insect-proof powder layer (4) can be reloaded as external conditions change.

2. The polyester woven fabric with insect-proof function according to claim 1, characterized in that: The carrier layer (5) comprises a light-responsive adhesive layer, which is composited from carbon nanotubes coated with polydopamine and hot-melt adhesive, and the mass ratio of the carbon nanotubes to the hot-melt adhesive is 1:5-1:

10.

3. The polyester woven fabric with insect-proof function according to claim 2, characterized in that: When the carrier layer (5) is irradiated by sunlight, the carrier layer (5) softens and becomes more sticky, thereby achieving adhesion of the insect-proof powder layer (4).

4. The polyester woven fabric with insect-proof function according to claim 3, characterized in that: The outer breathable surface layer (3) is a gradient pore size woven structure, comprising: Surface open area (6): diamond-shaped mesh formed by plain weave; Powder guide channel (7): a V-shaped groove formed by a twill weave, which runs through the outer layer to the middle powder storage layer (2).

5. The polyester woven fabric with insect-proof function according to claim 4, characterized in that: The aperture of the diamond mesh is between 200 μm and 500 μm, and the area accounts for 60% to 80% of the area of ​​the outer breathable surface layer (3).

6. The polyester woven fabric with insect-proof function according to claim 5, characterized in that: The V-shaped groove has a width between 100 μm and 200 μm, and a depth between 50 μm and 100 μm.

7. The polyester woven fabric with insect-proof function according to claim 6, characterized in that: The insect-proof powder layer (4) is made of powdered pyrethrin or azadirachtin, the powder particle size of which is less than 100 μm, and can enter the carrier layer (5) along the powder guide channel (7) by gravity or slight vibration.

8. The polyester woven fabric with insect-proof function according to claim 7, characterized in that: The insect-proof powder of the insect-proof powder layer (4) is coated with Fe3O4 nanoparticles and stearic acid.

9. The polyester woven fabric with insect-proof function according to claim 8, characterized in that: The carrier layer (5) further comprises nickel-plated polyester staple fibers embedded in the carrier layer (5); When exposed to sunlight, the photothermal responsive adhesive softens and wraps the insect repellent powder, while the magnetic fiber net generates a directional magnetic field to constrain the distribution of the powder.

10. The polyester woven fabric with insect-proof function according to claim 9, characterized in that: The outer breathable surface layer (3) is a polyester monofilament woven layer with a light transmittance of ≥70%, a monofilament diameter of ≤20 μm, and a warp density of 80-100 strands / inch.

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