JPH10179709A - Light shielding panel for automobile with deodorization function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light shielding panel for an automobile for not only preventing temperature rise inside a car by sunlight during parking and stopping but also removing or reducing an unpleasant odor inside the car regardless of the presence 7 absence of light. SOLUTION: In this light shielding panel for the automobile with a deodorization function for which a deodorization sheet is fixed to a freely foldable panel, the deodorization sheet is provided with (a) metal and/or metallic oxide particles, (b) adsorbent particles (c) thermoplastic resin particles and (d) the fibrous base material of an air permeable sheet, (a) and (b) are connected to the surface of (c) at the contact part of particles with each other and (c) is connected to (d).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-shielding panel for a vehicle having a deodorizing function which is disposed inside a front or rear window of a vehicle to block sunlight and to remove and decompose an unpleasant odor in the vehicle. is there.

[0002]

2. Description of the Related Art A light shielding panel for a vehicle is known which is disposed inside a front or rear window of a vehicle to block sunlight and prevent a rise in the temperature inside the vehicle when the vehicle is parked or stopped. Many of these are made of foldable panels such as cardboard and plastic sheets, folded when not in use and stored in the trunk, etc., and used when opened to use, but the function to remove and disassemble the unpleasant odor in the car Do not usually have. Japanese Patent Application Laid-Open No. 8-142667 discloses an automotive light-shielding panel in which a deodorizing sheet obtained by mixing or enclosing a deodorant containing a photoreactive semiconductor and an adsorbent is laminated and adhered to the panel.

[0003]

As described above, many conventional light shielding panels for automobiles usually do not have a function of removing and decomposing an unpleasant odor. Also, JP-A-8-14266
The light-shielding panel for an automobile disclosed in Japanese Patent Publication No. 7 requires the presence of light because it utilizes a photocatalytic action of a photoreactive semiconductor. The present invention provides an automotive light-shielding panel that can not only prevent a rise in temperature inside a vehicle due to sunlight during parking and stopping but also remove or reduce unpleasant odors inside the vehicle regardless of the presence or absence of light.

[0004]

SUMMARY OF THE INVENTION The present invention relates to (a) metal and / or metal oxide particles, (b) adsorbent particles, (c) thermoplastic resin particles, and (d) a fibrous sheet of a breathable sheet. A metal and / or metal oxide particle (a) and an adsorbent particle (b) are bonded to a surface of the thermoplastic resin particle (c) at a contact portion between the particles, and the thermoplastic resin particles ( c)
Is a light shielding panel for a vehicle with a deodorizing function in which a deodorizing sheet comprising a deodorizing material bonded to a fibrous base material (d) of a breathable sheet is fixed to a foldable panel.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing one embodiment of a light shielding panel for a vehicle having a deodorizing function according to the present invention. In the figure, 1 is a panel and 2 is a deodorizing sheet. It became possible to provide a light-shielding panel for a vehicle with a deodorizing function of the present invention,
First, the thin, light, and flexible deodorizing sheet can be manufactured. Therefore, this deodorizing sheet will be described.

[0006] In the deodorizing sheet, the metal and / or metal oxide particles and the adsorbent particles are bonded to the surface of the thermoplastic resin particles at a contact portion between the particles while maintaining their shapes, and the thermoplastic resin particles are bonded to each other. It is a sheet-like porous structure having a three-dimensional spread bonded at each contact portion and bonded to the fiber of the fibrous base material. The schematic diagram of FIG. 2 schematically shows the bonding of the metal and / or metal oxide particles (a1, a2), the adsorbent particles (b), the thermoplastic resin particles (c), and the fibrous base material (d) in the deodorizing sheet. Indicated. In FIG.
a1 is a metal oxide particle 1 (for example, manganese dioxide);
a2 indicates metal oxide particles 2 (cupric oxide), b indicates adsorbent particles (for example, activated carbon), c indicates thermoplastic resin particles, and d indicates fibers of a fibrous base material. The two types of metal and / or metal oxide particles (a1 and a2) and the one type of adsorbent particles (b) maintain their shapes (shown in the figure as spherical shapes) while keeping the thermoplastic resin. The thermoplastic resin particles (c) are bonded to the surfaces of the particles (c) at the contact portions of the particles.
The fibers are bonded to each other at the respective contact portions and bonded to the fibers of the fibrous base material (d), forming a sheet-like porous structure having a three-dimensional spread.

[0007] The deodorized sheet has a porosity of 50% or more.
It is preferably 80% or more, its specific surface area is 20 m ² / g or more, and it is air-permeable and can efficiently remove bad odors and harmful substances such as hydrogen sulfide, ammonia, formaldehyde, acetaldehyde, carbon monoxide, and ozone. . The thickness is usually 1 mm or less.

[0008] The metal and / or metal oxide particles (a) in the deodorizing sheet include manganese, copper, zinc, iron, vanadium, nickel, magnesium, aluminum, titanium, palladium, platinum, cerium, silicon, and their oxides. There are particles of things. Particles of these metal composite oxides may be used. As manganese oxide, Mn
There are O ₂ , MnO, Mn ₃ O ₄ , Mn ₂ O ₃ and Mn ₂ O ₇ , among which MnO ₂ is preferably used. Examples of the copper oxide include CuO, Cu ₂ O, and Cu ₄ O, and among them, CuO is preferably used. One kind of these metal and / or metal oxide particles may be used, but two or more kinds may be used in order to have a function of purifying various kinds of harmful substances. As a preferable example in the case of mixing two or more kinds, there is one containing manganese dioxide particles and cupric oxide particles.

The adsorbent particles (b) include activated carbon, zeolite, silica gel, sepiolite, activated alumina and activated clay. The adsorbent particles carrying aluminum sulfate, iodine, ferrous sulfate, calcium phosphate, sodium carbonate, magnesium silicate, boric acid, phosphoric acid, ascorbic acid, tartaric acid, oxalic acid, tannic acid, gallic acid, etc. are also used. be able to. One type of adsorbent particles may be used, or two or more types may be used. Activated carbon includes vegetable carbonaceous materials (coconut shell, almond shell, etc.), charcoal,
In addition to bituminous coal, carbonaceous synthetic resin (phenolic resin, etc.)
And any of them can be used.

As the thermoplastic resin particles (c), ultrahigh molecular weight polyethylene, polyethylene, polycarbonate,
The particles are selected from polyamide, ABS resin, polyimide, polyvinyl chloride, polysulfone, polystyrene phthalate, polypropylene, cellulose acetate and the like. These thermoplastic resin particles are obtained by forming metal and / or metal oxide particles (a) and adsorbent particles (b) on the surface of the thermoplastic resin particles (c) without being covered with the thermoplastic resin layer. It has a role as a binder to bind at the contact part. Among the thermoplastic resin particles, ultrahigh molecular weight polyethylene is preferably used, and its average molecular weight (measured by a viscosity method) is about 1,000,000 to 9,000,000.

As the fibrous base material (d) of the breathable sheet, a fibrous base material having a porosity of 60% to 99% is used.
For example, glass woven fabric / non-woven fabric, plastic woven fabric / non-woven fabric of polyethylene, polypropylene, polyamide, polyester and the like, paper and the like.

The above deodorizing sheet is manufactured, for example, by the following manufacturing example. <Production example of deodorizing sheet> Manganese dioxide (average particle size:
2.0 μm), 20 g, cupric oxide (average particle size: 1.9 μm)
m) 25 g and activated carbon (particle size: 48 mesh (300 μm)
m) Pass) 55 g was previously mixed in a ball mill. 2
1 L of water and 2 g of a water-absorbent resin "Sumikagel" (trade name of saponified vinyl acetate-acrylate copolymer manufactured by Sumitomo Chemical Co., Ltd.) were added to the L container, and the mixture was thoroughly stirred. Ultra-high molecular weight polyethylene particles [molecular weight by viscosity method: 2,000 K, particle size: 20 to 150 μm
(Average particle size is 35 μm)], and 20 g was further added and mixed well to prepare a particle suspension. This particle suspension is coated at a thickness of 0.
A 3 mm (40 g / m ² ) glass nonwoven fabric was applied and impregnated by a dip dipping method, and then heated and dried at 175 ° C. to obtain a sheet. The specific surface area of this sheet is about 33 m ² /
g, porosity was about 91%.

The deodorized sheet obtained in this manner is attached to a cardboard, a plastic sheet, a metal sheet, or a laminate sheet thereof, which is used as a mount for a light-shielding panel for an automobile, and is adhered thereto. As a bonding method, there is a method of applying heat and pressure, an adhesive, or the like. The conditions for heating and pressurizing are as follows: when the thermoplastic resin particles are ultra-high molecular weight polyethylene particles, the temperature is 130 to 200 ° C .;
４4900 Kpa (5-50 kg / cm ² )
Perform processing for 20 minutes. Further, the deodorizing sheet may be attached on the entire panel (backing sheet) or on a part of the panel (stripes or the like).

The panel with a deodorizing sheet obtained in this manner is used for preventing small amounts of particles such as metal and / or metal oxide particles and adsorbent particles from falling off, or for enhancing decorativeness. Paste a fine surface protective material on the top that does not allow particles such as adsorbent particles to pass,
Adhere. The bonding conditions are the same as the above conditions. As the surface protective material, a woven fabric, nonwoven fabric, paper, or the like having air permeability is used. Woven fabrics include natural or synthetic fibers such as cotton and polyester; paper includes pulp paper, synthetic paper, filter paper, etc. There is. It is only necessary to select from these.

[0015]

According to the present invention, it is possible to provide a light-shielding panel for an automobile which can not only prevent the temperature inside the vehicle from rising due to sunlight while the vehicle is parked and stopped, but can also remove or reduce the unpleasant odor inside the vehicle regardless of the presence or absence of light. Was.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automotive light-shielding panel with a deodorizing function according to one embodiment of the present invention.

FIG. 2 schematically shows bonding of metal and / or metal oxide particles (a1, a2), adsorbent particles (b), thermoplastic resin particles (c) and fibrous base material (d) in a deodorizing sheet. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Panel a1 ... Metal oxide particle 1 2 ... Deodorizing sheet a2 ... Metal oxide particle 2 b ... Adsorbent particle c ... Thermoplastic resin particle d ... Fibrous base material

Claims (1)

[Claims] (1) metal and / or metal oxide particles, (b) adsorbent particles, (c) thermoplastic resin particles, and (d) a fibrous base material for a gas-permeable sheet. /
Alternatively, the metal oxide particles (a) and the adsorbent particles (b) are bonded to the surface of the thermoplastic resin particles (c) at a contact portion between the particles, and the thermoplastic resin particles (c) are formed into a fibrous sheet of a breathable sheet. An automobile light-shielding panel with a deodorizing function, wherein a deodorizing sheet comprising a deodorizing material bonded to a base material (d) is fixed to a foldable panel.