JPH05239498A - Decorative soap and its production - Google Patents

Abstract

PURPOSE:To make it possible to detect a rise in the temperature of a bathroom to a suitable temperature by forming a thermochromic printed image on a soap. CONSTITUTION:A transfer sheet 8 is prepared by laminating an adhesive layer 4, a synthetic resin layer 5, a print layer 6 which is made from a thermochromic ink and where a printed image 2 disappears or appears at 20-25 deg.C, and a transparent coating material layer 7 one after the other on the surface of a release sheet 3 made of a woodfree paper. Water is applied to a thin coat on the release sheet 3 to dissolve a part of the adhesive, the release sheet 3 is peeled off from the transfer sheet 8 to expose the adhesive layer 4, and the transfer sheet 8a is then attached to one side of a soap 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative soap in which a pattern or the like is applied to soap and a method for producing the same.

[0002]

2. Description of the Related Art Generally, patterns such as designs and letters are engraved on the surface of soap for advertisement, advertisement or decoration. However, such a pattern formed on the surface of the soap by engraving has the drawbacks that it disappears early when soap is used and the color is poor. Therefore, a pattern is printed on the surface of the soap by a known printing method, or a sheet on which the pattern is printed is adhered.

[0003]

However, ordinary ink is used for the pattern applied to the surface of the soap by the known printing method or the method of adhering the sheet as described above. Therefore, it is not possible to enjoy the change in the color of the pattern or the temporary disappearance of the pattern even when hot water is applied. On the other hand, in order to know the temperature in the bathroom, it is necessary to install a thermometer in the bathroom, but it is difficult to secure a place to install the thermometer, and it has poor decorativeness and is easily dropped and damaged. Have

The present invention has been made in view of the above circumstances, and relates to a decorative soap which reports an increase in temperature in a bathroom and has interior characteristics, and a method for producing the same.

[0005]

In order to achieve the above object, the present invention forms a printed image of a thermochromic ink on soap, and the printed image of the thermochromic ink disappears when a predetermined temperature is exceeded. Or, the decorative soap that is supposed to be exposed is the first gist, and the adhesive layer, the synthetic resin layer, the printing layer made of thermochromic ink, and the transparent coating material layer are sequentially stacked on the surface of the release sheet. Prepared a transfer sheet, peeling off the release sheet from the transfer sheet, and attaching the transfer sheet to one side of the soap by the adhesive force of the adhesive layer. A step of preparing a transfer sheet in which a synthetic resin layer, a printing layer made of a thermochromic ink, and an adhesive layer are sequentially stacked and formed; a step of peeling a release sheet from the transfer sheet; Of layers The preparation of decorative soap and a step of attaching the one side surface of the soap by wearing forces a third aspect.

[0006]

That is, the decorative soap of the present invention is formed by printing a printed image of thermochromic ink on soap, and when the temperature in the bathroom rises or the soap is heated with hot water and the temperature exceeds a predetermined temperature. The printed image disappears or appears. For example, when a printed image is formed on the soap with a thermochromic ink that disappears or appears at 20 to 25 ° C., the decorative soap is placed in the bathroom, and a change in the printed image notifies the rise of the internal temperature. be able to. Further, when a printed image is formed on the soap with a thermochromic ink that disappears or appears at 38 to 42 ° C., the printed image changes with the application of hot water, which is very interesting.

Next, the present invention will be described in detail.

The decorative soap of the present invention is obtained by using soap and thermochromic ink.

As the above-mentioned soap, conventionally known soap is used, and its color is not particularly limited. However, it is necessary to color the thermochromic ink so that the disappearance or appearance of the thermochromic ink can be confirmed. Further, transparent soap is used when the printed image of the thermochromic ink formed on the soap can be seen from any part.

The thermochromic ink for forming a printed image on the soap is one in which the printed image disappears or appears when the temperature exceeds a predetermined temperature. Such a thermochromic ink is not particularly limited, and conventionally known products can be used as they are. However, since the proper temperature of the bathroom is about 20 to 25 ° C., a material that undergoes thermal discoloration in that temperature range is used. Further, since the proper temperature of the bath water is 38 to 42 ° C., a bath color that causes thermal discoloration in the temperature range is used so that the printed image is thermally discolored.

In addition to the thermochromic ink, it is also possible to overprint the printed image on the soap using a conventionally known ordinary ink which does not change even if the temperature changes.

The decorative soap of the present invention is manufactured, for example, as follows. First, a transfer sheet is prepared in which an adhesive layer, a synthetic resin layer, a printing layer made of thermochromic ink, and a transparent coating material layer are sequentially stacked on the surface of a release sheet such as high-quality paper. Next, the release sheet is peeled off from the transfer sheet, and the transfer sheet is attached to one side of the soap by the adhesive force of the adhesive layer.

As the adhesive constituting the transfer sheet, a conventionally known adhesive such as starch or acrylic is used. Further, as the synthetic resin, alkyd resin,
Propylene resin or the like is used. Furthermore, a soft resin such as nitrocellulose or polyethylene terephthalate is used as the transparent coating material.

Incidentally, a thin layer of a release agent such as silicone or natural wax may be provided on the surface of the release sheet. By providing a thin layer with a release agent in this way, the release sheet can be easily peeled from the transfer sheet.

The decorative soap of the present invention can also be manufactured, for example, as follows. First, a transfer sheet in which a synthetic resin layer, a printing layer made of thermochromic ink, and an adhesive layer are sequentially stacked on the surface of a release sheet such as high-quality paper is prepared. Next, the transfer sheet can be manufactured by attaching the transfer sheet to one side of the soap by the adhesive force of the adhesive layer and then peeling off the release sheet from the transfer sheet.

Methyl methacrylic resin, urethane resin or the like is used as the synthetic resin forming the transfer sheet. Also, as the adhesive, butyl cellulose acetate,
A butadiene-styrene copolymer etc. are used.

A thin film may be provided on the surface of the release sheet with a release agent such as silicone or natural wax as in the transfer sheet.

The printed image of the decorative soap thus obtained disappears when the temperature in the bathroom rises to about 20 to 25 ° C. or when it exceeds a predetermined temperature due to boiling water, for example. Or it appears. Therefore, when the above-mentioned decorative soap is placed in the bathroom, it is possible to know the rise in the internal temperature by the disappearance or change of the printed image. Further, the decorative soap of the present invention is rich in interest in that the printed image is changed by applying hot water.

Next, examples will be described.

[0020]

EXAMPLE FIG. 1 shows an example of the decorative soap of the present invention. In the figure, 1 is soap, and 20 ° C on one side
A printed image 2 of a reversible thermochromic ink containing a thermochromic substance consisting of an acid-developing substance, an acidic substance, and a solvent is formed so that the printed image is decolored when the amount exceeds.

The above decorative soap is manufactured, for example, as follows. First, as shown in FIG. 2, an adhesive layer 4 made of starch paste on the surface of a release sheet 3 made of high-quality paper 4, an alkyd resin layer 5, and a thermochromic ink that erases the printed image when the temperature exceeds 20 ° C. A transfer sheet 8 is prepared in which the printing layer 6 and the transparent coating material layer 7 made of nitrocellulose are sequentially stacked. Next, as shown in FIG. 3, water is thinly applied to the release sheet 3 to dissolve a small amount of starch paste, and the release sheet 3 is peeled from the transfer sheet 8 to expose the adhesive layer 4. Then, as shown in FIG. 4, the transfer sheet 8a is attached to one side surface of the soap 1. In this way, the decorative soap shown in FIG. 1 is obtained.

When the decorative soap obtained as described above is placed in a bathroom and the temperature of the bathroom rises above 20 ° C., the printed image 2 is erased from the soap 1 as shown in FIG. .. Therefore, the temperature in the bathroom can be known without installing a thermometer in the bathroom. At the same time, this decorative soap can become the interior of the bathroom.

The decorative soap shown in FIG. 1 can also be manufactured as follows. First, as shown in FIG. 5, a release agent layer 10 made of silicone, an adhesive layer 11 made of acrylic resin, a PP resin layer 12 having a thickness of 25 μm 12, and 20 ° C. are formed on the surface of a release sheet 9 made of high-quality paper. A transfer sheet 15 is prepared in which a printing layer 13 made of a thermochromic ink whose printed image is decolored when the number exceeds the limit and a transparent coating material layer 14 made of polyethylene terephthalate are sequentially stacked. Next, as shown in FIG.
Then, the release sheet 9 is peeled off to expose the adhesive layer 11 and the transfer sheet 15a is attached to one side of the soap 1 by the adhesive force of the adhesive layer 11, as shown in FIG. In this way, the decorative soap shown in FIG. 1 is obtained.

Further, the decorative soap shown in FIG. 1 can be manufactured as follows. First, as shown in FIG. 8, a release agent layer 17 for natural wood wax, a methylmethacrylic resin layer 18,
A transfer sheet 21 is prepared in which a print layer 19 made of a thermochromic ink that erases a printed image when the temperature exceeds 20 ° C. and an adhesive layer 20 made of butyl cellulose acetate are sequentially stacked. Next, after the transfer sheet 21 is pressure-bonded to the soap 1 with a hot plate heated to 120 ° C. and attached to one side surface of the soap 1 by the adhesive force of the adhesive layer 20, as shown in FIG.
The release sheet 16 is peeled off from the transfer sheet 21. In this way, the decorative soap shown in FIG. 1 is obtained.

As shown in FIGS. 10 and 11,
A printed image 22 of the thermochromic ink may be formed on one side of the soap 1, and a transparent soap layer 23 may be formed on one side of the soap 1 so as to cover the printed image 22. In this case, if the soap 1 is made of transparent material, it becomes a decorative soap in which the printed image 22 can be seen from any part.

[0026]

As described above, in the decorative soap of the present invention, a printed image of the thermochromic ink is formed on the soap, and when the temperature exceeds a predetermined temperature, the printed image of the thermochromic ink disappears or appears. It is like this. Therefore, in addition to washing the body and the like, the decorative soap can be placed in the bathroom at a cold time such as winter to notify that the temperature inside the bathroom has risen to an appropriate temperature due to a change in the printed image. The printed image disappears or becomes visible when the temperature exceeds a certain level, such as when soap is poured over hot water, which makes it more entertaining than ever before, giving children with a bath glare the enjoyment of taking a bath and in the bathroom. It also becomes the interior of. According to the manufacturing method of the present invention, the decorative soap having the above characteristics can be obtained easily and at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a manufacturing explanatory view of the above-mentioned embodiment.

FIG. 3 is a manufacturing explanatory view of the above embodiment.

FIG. 4 is a manufacturing explanatory view of the above-mentioned embodiment.

FIG. 5 is another manufacturing explanatory view of the above-mentioned embodiment.

FIG. 6 is another manufacturing explanatory view of the above-mentioned embodiment.

FIG. 7 is another manufacturing explanatory view of the above-mentioned embodiment.

FIG. 8 is another manufacturing explanatory view of the above-mentioned embodiment.

FIG. 9 is another manufacturing explanatory view of the above-mentioned embodiment.

FIG. 10 is a perspective view of another embodiment of the present invention.

FIG. 11 is a cross-sectional view of an essential part of the above embodiment.

[Explanation of symbols]

 1 soap 2 printed image

Claims (4)

[Claims] 1. A decorative soap characterized in that a printed image of thermochromic ink is formed on soap, and when the temperature exceeds a predetermined temperature, the printed image of thermochromic ink disappears or appears. .. 2. The decorative soap according to claim 1, wherein a transparent soap layer is formed on one side of the soap so as to cover the printed image of the thermochromic ink. 3. A transfer sheet in which an adhesive layer, a synthetic resin layer, a printing layer made of thermochromic ink, and a transparent coating material layer are sequentially stacked on the surface of a release sheet, and the release sheet is released from the transfer sheet. A method for producing a decorative soap, characterized in that the sheet is peeled off and the transfer sheet is attached to one side of the soap by the adhesive force of the adhesive layer. 4. A step of preparing a transfer sheet in which a synthetic resin layer, a printing layer made of a thermochromic ink, and an adhesive layer are sequentially stacked on the surface of the release sheet, and a step of peeling the release sheet from the transfer sheet. And a step of attaching the transfer sheet to one side of the soap by the adhesive force of the adhesive layer, the method for producing a decorative soap.