Double-coated umbrella fabric and umbrellas made with this fabric

Abstract

To provide an umbrella fabric that achieves a heat shielding rate of 55% even with two-layer coating, and an umbrella using this fabric. The two-layer coated umbrella fabric of this invention consists of an umbrella fabric body 1, a first coating layer 2 applied to the inside of the fabric body, and a second coating layer 3 containing minerals applied on the first coating layer. The minerals are zinc oxide and titanium.

Description

[Technical Field]

[0001] The present invention relates to a double-layer coated umbrella fabric with high heat insulation properties, such as for parasols and umbrellas, and to umbrellas made from this fabric. [Background technology]

[0002] One standard for umbrellas to prevent the temperature of the person using the umbrella from rising is the heat shielding rate. For example, a high heat shielding rate is 55% (JIS heat shielding standard display S55).

[0003] To achieve this 55% heat blocking rate, it was previously necessary to apply three or more layers of coating to the back of the umbrella fabric. Summary of the Invention [Problem to be solved by the invention]

[0004] However, coating with three or more layers had the disadvantage of making the umbrella heavier and placing a strain on the user.

[0005] Furthermore, the increased amount of coating increases the risk of quality degradation, such as peeling of the coating.

[0006] Through various experiments and studies, the inventor discovered that by incorporating desired minerals into the coating material, it is possible to achieve a heat-shielding rate of 55% even with a two-layer coating, even for umbrellas made of black fabric, which is difficult to insulate from heat.He also discovered that it is possible to achieve a heat-shielding rate of 65% (JIS heat-shielding standard designation S65) for umbrellas made of off-white fabric, and thus proposed the present invention. [Means for solving the problem]

[0007] The two-layer coated umbrella fabric of this invention is characterized by comprising an umbrella fabric body, a first coating layer applied to the inside of the fabric body, and a second coating layer containing minerals applied on top of the first coating layer.

[0008] The umbrella made with the two-layer coated umbrella fabric of this invention is characterized by comprising an umbrella fabric body, a first coating layer applied to the inside of the fabric body, a second coating layer containing minerals applied on top of the first coating layer, and an umbrella handle.

[0009] The minerals are zinc oxide and titanium.

[0010] The color of the fabric body is black, the color of the first coating is white, and the color of the second coating is black or silver.

[0011] The color of the fabric body is off-white, the color of the first coating is white, and the color of the second coating is black or silver. [Effects of the Invention]

[0012] According to this invention, even if the fabric is black and has two layers of coating, it can achieve a heat-blocking rate of 55%.

[0013] Furthermore, if the fabric is off-white, it can achieve a heat-blocking rate of 65%. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 2 is a longitudinal cross-sectional side view of the umbrella fabric of the present invention. [Figure 2] This is an explanatory diagram of the effect of the umbrella fabric of the present invention. [Figure 3] This is a graph comparing the temperature rise of conventional umbrella fabric and the umbrella fabric of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] The present invention will now be described with reference to the drawings. [Example]

[0016] As shown in Figure 1, the umbrella fabric of this invention consists of an umbrella fabric body 1 made of, for example, black polyester, a first coating layer 2 made of, for example, white PU (polyurethane) coated on the back of the fabric body 1, and a second coating layer 3 coated on top of the first coating layer 2, which is black or silver and contains a predetermined amount of minerals.

[0017] Furthermore, zinc oxide and titanium are particularly preferred as the minerals, and the second coating layer 3 containing zinc oxide and titanium can achieve a desirable heat shielding rate.

[0018] The colors of the fabric body 1, the first coating layer 2, and the second coating layer 3 are not limited to the above colors.

[0019] The umbrella fabric of the present invention has the above-mentioned structure, so that, for example, as shown in Figure 2, infrared rays (IR), which are a heat source from outside, are blocked and reflected by the white first coating layer 2, and the second coating layer 3, which is a blend of zinc oxide and titanium, acts as a final heat shield, thereby increasing the heat-blocking rate of the umbrella fabric.

[0020] It is preferable to make the second coating layer 3 black or silver, as this can increase the light blocking rate.

[0021] In Figure 2, ultraviolet light (UV) is reflected by the fabric body 1 and the first layer coating portion 2, and visible light (VL) is absorbed by the fabric body 1, the first layer coating portion 2, and the second layer coating portion 3.

[0022] Figure 3 shows the temperature change of a plain polyester fabric and a fabric coated with two layers of the present invention when a lamp is irradiated from the outside for 20 minutes.

[0023] As shown in Figure 3, the fabric of the present invention was lower in temperature after 20 minutes, and had better heat insulation and cooling sensation.

[0024] Table 1 shows the temperature of a conventional three-layer coated fabric (black) and a two-layer coated fabric (black) of the present invention over time when heated from the outside by a lamp.

[0025] [Table 1]

[0026] As shown in Table 1, after 30 minutes, the temperature of the fabric of this invention was lower than that of the conventional three-layer coated fabric, indicating that it had a higher heat insulation rate.

[0027] According to this invention, even if the fabric is black and has two layers of coating, it can have sufficient heat-blocking properties, and in particular can achieve a heat-blocking rate of 55%. [Example]

[0028] The second embodiment of the double-coated umbrella fabric of the present invention is the same as the umbrella fabric of the first embodiment, except that the umbrella fabric is off-white.

[0029] Table 2 shows the temperature of the two-layer coated fabric (white fabric) of the second embodiment of the present invention over time when heated from the outside by a lamp.

[0030] [Table 2]

[0031] As shown in Table 2, the temperature after 30 minutes for the two-layer coated fabric (white fabric) is lower than that for the black fabric of the first embodiment of the present invention in Table 1, indicating that the heat insulation rate is higher.

[0032] Furthermore, the fabric of the second embodiment of the present invention (off-white fabric) can provide sufficient heat insulation even with a two-layer coating, and in particular can achieve a heat insulation rate of 65%. [Explanation of symbols]

[0033] 1 Fabric body 2 First layer coating section 3 Second layer coating section

Claims

1. The umbrella fabric itself, a first coating layer provided on the inside of the fabric body; The two-layer coated umbrella fabric is characterized by comprising a second coating layer containing minerals and provided on the first coating layer.

2. The two-layer coated umbrella fabric according to claim 1, characterized in that the minerals are zinc oxide and titanium.

3. The two-layer coated umbrella fabric according to claim 1 or 2, characterized in that the color of the fabric body is black, the color of the first coating is white, and the color of the second coating is black or silver.

4. The two-layer coated umbrella fabric according to claim 1 or 2, characterized in that the color of the fabric body is off-white, the color of the first coating is white, and the color of the second coating is black or silver.

5. The umbrella fabric itself, a first coating layer provided on the inside of the fabric body; a second coating layer containing a mineral and disposed on the first coating layer; A two-layer coated umbrella characterized by comprising an umbrella handle.

6. 6. The two-layer coated umbrella according to claim 5, wherein the minerals are zinc oxide and titanium.

7. The two-layer coated umbrella according to claim 5 or 6, characterized in that the color of the fabric body is black, the color of the first coating is white, and the color of the second coating is black or silver.

8. The double-coated umbrella according to claim 5 or 6, characterized in that the color of the fabric body is off-white, the color of the first coating is white, and the color of the second coating is black or silver.

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