JPH01250843A - Dew condensation detection sheet - Google Patents

Abstract

PURPOSE:To detect dew condensation on an interior surface of a house, etc., speedily by providing an area which colors by the sticking of water and an area which does not color although the areas are in the same color in a dry state on the surface of a base material. CONSTITUTION:The dew condensation detection sheet S consists of a laminate sheet formed by laminating plural materials. On the surface of the base material 11 made of paper, synthetic resin, metal foil, etc., a colored layer 2 which consists of pigment, dye, etc., of proper color is laminated and on the surface of the colored layer 2, an opaque water absorbing layer 3 made of a material such as SiO2 which is opaque in a dry state, but becomes transparent by absorbing water is laminated. On the surface of the water absorbing layer 3, a transparent shield layer 4 made of transparent fluororesin, etc., cutting off the transmission of water is laminated covering the water absorbing layer 3 partially in a constant arrangement pattern. Then, the detection sheet S is stuck on the interior surface of the house, etc., and then when water produced by dew condensation sticks on the detection sheet S, the dew condensation can be detected by contrasting a discoloring area with a nondiscoloring area and the dew condensation is displayed in a pattern or characters.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dew condensation detection sheet, and more specifically, it is applied to an interior surface of a building to detect dew condensation occurring on the interior surface. This relates to the sheet.

[Conventional technology]

In recent years, as buildings such as houses have become more airtight, the occurrence of condensation on interior surfaces has become a problem. When condensation forms on the interior surfaces of a building, it can cause stains and discoloration on the interior materials, cause the interior materials to peel off, cause mold to grow, stain the interior materials, and endanger the health of residents. Problems such as damage may also occur. Furthermore, the occurrence of dew condensation also means that moisture accumulates inside closets and cupboards, causing the problem of damaging clothing and the like stored inside.

To prevent damage caused by condensation on interior surfaces, when condensation occurs, take measures to eliminate condensation, such as immediately ventilating the room, suppressing the generation of water vapor, and drying the room. All you have to do is take a class.

[Problem to be solved by the invention]

However, when condensation begins to form on the interior surface, the condensation is hardly visible from the outside, so the condensation progresses considerably until large water droplets accumulate on the interior surface or the damage described above occurs. could not detect the occurrence of condensation.

In order to quickly detect dew condensation, it may be possible to install an electrical condensation sensor or humidity sensor, but this would be expensive to install in a general home. In addition, installation work such as wiring is required, and it is extremely uneconomical and impractical to install a dew condensation sensor or the like as described above on each interior surface of each room in a house or the like.

SUMMARY OF THE INVENTION An object of the present invention is to provide a dew condensation detection means that can quickly detect the occurrence of dew condensation on the interior surfaces of a house, etc., is easy to install, and is inexpensive.

[Means to solve the problem]

In order to solve the above problems, the present invention provides the following features:
A discolored area that has the same color in a dry state but changes color due to adhesion of moisture and a non-discolored area that does not change color are provided, and the arrangement shape of the discolored area and the non-discolored area has an arrangement shape that can be concretely conceptualized, Condensation is detected physically and chemically.

[For production]

In this way, if a dew condensation detection sheet, which has a base material with an area that changes color due to adhesion of moisture and an area that does not change color, is attached to the interior surface of a house, etc., the moisture generated due to condensation will be detected. By adhering to the detection sheet, the color of the discolored area changes.

By contrasting the discolored area and the non-discolored area, a dew condensation display consisting of a pattern or letters that can express a specific concept, such as notifying the occurrence of dew condensation or urging action to eliminate condensation, appears. The condensation display having this specific conceptual shape makes it possible to detect the occurrence of condensation quickly and reliably, and to express it in a way that is visually clear and intuitively understandable.

〔Example〕

Next, the present invention will be explained in detail below with reference to the drawings showing examples.

FIG. 1 shows the cross-sectional structure of a dew condensation detection sheet according to the present invention, and the dew condensation detection sheet s is made of a laminated sheet in which a plurality of materials are laminated.

Paper 2 A colored layer 2 made of appropriately colored pigments, dyes, etc. is laminated on the surface of a base material 1 made of synthetic resin, gold foil, etc., and the surface of the colored layer 2 is opaque in a dry state, An opaque water-absorbing layer 3 made of a material that becomes transparent by absorbing water is laminated thereon. Specific materials for the opaque water-absorbing FI3 include, for example, SiOz, CaCO5, Al
Examples include those using z Ox, etc., but are not limited to these (as long as they have the property of becoming transparent by absorbing water and returning to opacity when the attached moisture is removed, can be freely selected.

A transparent blocking layer 4 that blocks the passage of moisture is laminated on the surface of the opaque water-absorbing layer 3 so as to partially cover the opaque water-absorbing layer 3 in a predetermined arrangement pattern. Examples of the material for the transparent blocking layer 4 include water-repellent materials such as transparent fluororesin and transparent acrylic resin. The area where the transparent blocking layer 4 is laminated becomes a non-discoloring area that does not change color due to the adhesion of moisture, and the area B where the transparent blocking layer 4 is not covered with a GT layer and the opaque water absorbing layer 3 is directly exposed is a non-discoloring area where the transparent blocking layer 4 is not coated and the opaque water absorbing layer 3 is directly exposed. Adhesion results in a discolored area that changes color.

Note that an adhesive layer 5 is laminated on the back surface of the base material 1, so that the dew condensation detection sheet s can be easily attached to the interior surface of a house, etc.

Next, the dew condensation detection function of the condensation detection sheet S having the cross-sectional structure as described above will be explained. First, dew condensation detection sheet S
When there is no condensation on the surface, the colored layer 2 is covered with the opaque water absorbing layer 3 in both the discolored area B and the non-discolored area A, as shown in FIG. 1, and is not visible from the surface.
The discolored region B and the non-discolored region A cannot be distinguished from each other in terms of appearance.

However, as shown in FIG. 2, when dew condensation occurs on the surface of the dew condensation detection sheet S and moisture adheres to the sheet surface, the non-discoloration area A where the transparent blocking layer 4 is located blocks moisture from penetrating into the lower layer. However, in the discolored area B where there is no transparent blocking layer 4, water reaches the opaque water absorbing layer 3 and is absorbed. The opaque water absorption layer 3 changes from an opaque state to a transparent state 30 by water absorption. When the opaque water absorbing layer 3 becomes transparent, the color form of the colored N2 in the lower layer becomes clearly visible from the surface through the transparent water absorbing layer 30. In this way, by contrasting the discolored area B where the color of the colored layer 2 is visible and the non-discolored area A where the colored layer 2 remains covered with the opaque water absorbing layer 3,
The occurrence of condensation can be clearly displayed in a visible manner.

Note that if the condensed moisture is removed by ventilation or drying due to increased temperature, the transparent water absorption layer 30 in the discolored area B becomes opaque again, and the colored layer 2 becomes visible in the same way as in the non-discolored area A. Therefore, the dew condensation detection sheet S can be used repeatedly. FIG. 3 shows an example of the arrangement pattern of the discolored area B and the non-discolored area A in the dew condensation detection sheet S described above. The transparent barrier layer 4 is not laminated on the part of the sheet surface corresponding to the word "ventilation",
The opaque water absorption layer 3 is directly exposed, and this "
The text "VENTILATION" becomes the discolored area B, and the background other than the text becomes the non-discolored area A.

Therefore, when the dew condensation detection sheet S is in a dry state, the discolored area B and the non-discolored area A cannot be distinguished from each other in appearance, and the letters cannot be seen. Layer 2 appears, with text representing a certain concept "ventilation", warning of the occurrence of condensation,
This can help remove condensation through ventilation. In this way, by configuring a shape that represents a certain concept, such as a warning character that you want to display when condensation occurs, as discolored area B, it is possible to clearly express the occurrence of condensation and prompt you to take measures to eliminate condensation. be.

However, as shown in FIG. 4, contrary to the above embodiment, the text portion to be displayed is the non-discoloration area A where the transparent blocking layer 4 is laminated, and the ground area other than the text is the opaque water-absorbing layer. Even if 3 is configured as the exposed discolored area B, the ground part other than the letters changes color due to dew condensation, and the color of the colored Ff2 appears, and by contrast with the non-discolored area A of the letter part, Similarly, it is possible to clearly display the occurrence of dew condensation, etc.

The arrangement shape of discoloration area B and non-discoloration area A, that is, the shape expressing a certain concept, is the above-mentioned "Ventilation J", "Ventilation required", "High humidity", "Condensation", "Steam boiler". In addition to those that display characters such as
As shown in ~ (C), items that display marks or symbols such as water drops [Figure 5 (a)], items that display shapes such as mold patterns [Figure 5 (b)], and ventilation fans. It is possible to display a combination of arbitrary characters, symbols, two figures, etc., such as a combination of a mark with a stylized design of a feather and airflow and the word "kanki" [Fig. 5 (C)].

By changing the color of the colored layer 2, the display color during dew condensation can be freely changed, and in addition to coloring the entire surface of the dew condensation detection sheet S in the same color, the colored layer 2 consisting of a plurality of colored parts is formed. But that's fine. When the colored layer 2 contains a fluorescent agent, the display at the time of dew condensation becomes clearer and clearer, and the warning effect etc. can be enhanced.

In the illustrated embodiment, the colored layer 2 is provided on the base material 1, but if the material of the base material 1 is made of a colored material containing a pigment etc., the colored layer 2 may not be provided. good. Furthermore, if the coloring N2 is not provided and the base material 1 is made of a transparent material, the color of the interior surface etc. to which the dew condensation detection sheet S is pasted can be seen through the base material 1, so that the coloring can be prevented. It can achieve the same effect as providing a layer.

The opaque water absorption layer 3 is most preferably completely opaque in a dry state and completely transparent in a water absorption state, but in practical terms, the transparency in the dry state and the water absorption state is
It is enough if there is a clear difference.

For example, even if it is semi-transparent in the dry state and the color of the colored layer 2 underneath is only slightly visible, if it becomes almost completely transparent due to water absorption and the color of the colored layer 2 can be clearly seen, then the color will change. It is possible to clearly contrast the region B and the non-discolored region A.

In addition, when the opaque water-absorbing layer 3 is colored by including an appropriate coloring agent in the material constituting the opaque water-absorbing layer 3, and becomes transparent by water absorption,
It may also be lightly colored and translucent.

As for the shape of the dew condensation detection sheet S, as shown in Fig. 3, a label-like shape such as a rectangle is convenient for handling, such as when pasting it on the interior surface of a house, etc., but a circular shape other than a rectangle, Triangular or other shapes may be used, and the dew condensation detection sheet S may be formed into a long and thin tape, and then used by cutting only the required length. Further, the dew condensation detection sheet S can be used by being attached to the surface of an interior material such as wallpaper, or the interior material itself can be made of the dew condensation detection sheet S having a dew condensation display function.

If a peelable adhesive layer 5 is laminated on the back side of the dew condensation detection sheet S, it will be easy to attach it to the interior surface, and it will be possible to re-peel it when it is no longer needed, but it will be necessary to peel it off again. If not, it may be laminated with a permanently attached adhesive layer. Further, the dew condensation detection sheet S may not be provided with the adhesive layer 5 or the adhesive layer, but may be applied with an adhesive or the like during use. Next, the embodiments shown in FIGS. 6 to 8 are , the thickness of the opaque water-absorbing layer 3 is changed depending on the location.

Specifically, as shown in FIG. 6, the thickness of the opaque water-absorbing layer 3 becomes thicker continuously from the left side to the right side in the figure. Furthermore, discolored areas B without the transparent blocking layer 4 are provided at multiple locations of the opaque water-absorbing layer 3 having different thicknesses.

FIG. 7 shows the dew condensation detection effect of the dew condensation detection sheet s as described above. Moisture generated by dew condensation is absorbed by the opaque water absorption layer 3 of each discolored area B having a different thickness. In the thin area B, moisture penetrates into the entire opaque water absorption layer 3 to the lower layer and becomes transparent 30, whereas as the thickness becomes thicker, moisture cannot penetrate to the lower layer of the opaque water absorption layer 3 and only the upper layer becomes transparent. 30, resulting in region B, where the underlying layer remains opaque. However, if the moisture generated by condensation increases, the thick area B8
This will also make the lower layers transparent.

Therefore, depending on the amount of attached moisture, that is, the degree of dew condensation, the range of discoloration area B in which the water absorption layer 3 becomes completely transparent to the lower layer changes. It becomes possible to detect and display up to a certain degree.

Regarding the arrangement shape of the discoloration area B and the non-discoloration area A, for example, as shown in FIG. If the colored layer 2 is installed in parallel, as the amount of dew condensation increases, the colored layer 2
This results in an increase in the number of discolored areas Bu where the colors appear, that is, the number of water drop marks displayed. Therefore, the degree of condensation can be easily determined by the number of water drop marks displayed, and the greater the number of water drop marks displayed, the greater the risk of damage caused by condensation. Once the number of dew condensation has reached a certain level, taking measures such as ventilation in the room will effectively prevent condensation.

The thickness of the opaque water-absorbing layer 3 may be changed continuously in a tapered manner as shown in the figure, or may be changed in steps. Further, if the color of the colored layer 2 is changed to blue, yellow, red, etc. depending on the position of the water drop mark, the warning effect can be further enhanced.

Next, FIG. 9 shows an embodiment in which the discoloration area B and the non-discoloration area A have different configurations.

The colored layer 2 is laminated on the entire surface of the base material 1, which is the same as in the above embodiment, but a color change agent layer 6 that changes color due to water absorption is partially laminated on the surface of the colored layer 2. The material of the color-changing agent layer 6 is as follows: the area where the color-changing agent layer 6 is formed is defined as a color-changing area B, and the area where the color-changing agent layer 6 is not formed and the colored layer 2 is directly exposed is defined as a non-color-changing area A. Examples include synthetic resins containing cobalt chloride. Cobalt chloride-containing resin exhibits a blue color in a dry state, but changes to pink when it absorbs water. The color of colored layer 2 is
The cobalt chloride-containing resin should be colored in the same color as the dry state, that is, blue.

To explain the dew condensation detection function of the dew condensation detection sheet S as described above, in a dry state, both the discolored area B and the non-discolored area A are blue and cannot be distinguished from each other. When attached to the color change agent layer 6, the cobalt chloride-containing resin turns pink. In this case, it can be clearly contrasted with the blue color of the surrounding non-discolored area A, and the display of characters or the like corresponding to the arrangement shape of the discolored area B can be clearly displayed.

As the color change agent layer 6, in addition to cobalt chloride-containing resin,
Any material can be used as long as it changes color due to water absorption. Note that if a plurality of color change agent layers 6 are provided by combining materials that change in color in a water-absorbed state, dew condensation can be displayed in a plurality of colors. In addition, if a material that is transparent in a dry state and becomes opaque upon absorption of water is used as the color change agent layer 6, a contrast can be created between the color change area B and the non-color change area depending on whether or not the underlying colored layer 2 is visible. be able to.

In each of the embodiments described above, the discoloration of the discoloration area B means not only a change in hue from blue to pink, etc., but also a change from a translucent state to a clear transparent state, and a change in the density and brightness of the same hue. Any material that causes a change in color dimensions that can be visually perceived, such as a change in color, may be used.

The dew condensation detection sheet S according to the present invention can be used on the interior surface of a house, the inside surface of a storage such as a closet or cupboard, or any other place where it is necessary to detect the occurrence of dew condensation. .

〔Effect of the invention〕

The dew condensation detection sheet) S according to the present invention described above has a discolored area on the surface of the base material that is the same color in a dry state but changes color due to adhesion of moisture, and a non-discolored area that does not change color. When the generated moisture adheres to the sheet surface, the contrast between the discolored areas that change color and the non-discolored areas that do not change color brings out characters or figures that represent a certain concept, making it visually appealing. The expression means can detect and display the occurrence of condensation and prompt the dew condensation elimination action.

In other words, the dew condensation detection sensor of the present invention can be manufactured at an extremely low cost without using a dew condensation sensor that is expensive and troublesome to install. In addition to being convenient to handle, it is extremely easy to understand the occurrence of condensation in any location by expressing specific concepts using changes in color, letters, and symbols.
It is possible to display information in a way that is intuitively understandable.

If the condensation detection sheet can detect and display the occurrence of condensation, measures such as ventilation and suppression of water vapor generation can be taken to immediately eliminate the condensation, thereby preventing damage such as staining interior materials and the growth of mold. This will make it possible to reliably prevent such occurrences, making an extremely large contribution to the maintenance and preservation of the environment of housing, etc.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional structural diagram of a dew condensation detection sheet according to the present invention, Fig. 2 is a cross-sectional structural diagram showing the dew condensation detection function, Fig. 3 is a plan view, and Fig. 4 is a cross-sectional structural diagram of another embodiment. Fig. 5 is a plan view showing a modified example of the display, Fig. 6 is a cross-sectional structural diagram of another embodiment, Fig. 7 is a cross-sectional structural diagram showing the dew condensation detection function, Fig. 8 is a plan view, and Fig. 9 is a further FIG. 3 is a cross-sectional structural diagram of another example. 1... Base material 2... Colored layer 3... Opaque water absorption layer 30... Transparent portion 4... Transparent blocking layer 6...
・Discoloration agent layer A...non-discoloration area B...discoloration area S
...Condensation detection sheet representative Patent attorney Takehiko Matsumoto Figure 4 Figure 5 Figure 8 Figure 9

Claims (1)

[Claims] 1 The surface of the base material is provided with a discolored area that has the same color in a dry state but changes color due to adhesion of moisture, and a non-discolored area that does not change color, and the arrangement shape of the discolored area and the non-discolored area is as follows.
A condensation detection sheet with a layout shape that allows you to express a specific concept.