JPH04362075A - Mildewproofing treatment of ceramic product - Google Patents

Abstract

PURPOSE:To sustain curing for mildewproofing over a long period of time by thermally spraying copper onto the surface of a product before curing right after molding of a compd. of cement, etc., to a product shape. CONSTITUTION:The compd. of the cement, etc., is molded by extrusion molding, etc. Copper is thermally sprayed by a thermal spraying machine onto the surface of the uncured molding to form the film of copper thereon. This surface is further subjected to finish coating at need before or after primary curing, by which the ceramic product having the mildewproofing property over a long period of time is obtd. The use of the above-mentioned finish coating material by adding a mildewproofing agent thereto is possible as well.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for anti-mildew treatment of ceramic products such as inorganic building materials.

0002

2. Description of the Related Art Hitherto, flat plate roofing materials made of fiber-reinforced cement have been widely used as roofing materials. This type of roofing material has various advantages, such as being considerably larger per sheet than Japanese or Western tiles, making it more efficient to roof, and being lightweight, making it convenient for roof structure. By the way, since the above-mentioned roofing materials basically have water-absorbing properties, there is a problem that once they absorb water for some reason, they do not dry easily and are likely to generate mold. In order to solve this problem, the surface of the roofing material is painted with a paint containing a fungicide.

0003

[Problems with the Prior Art] However, even when painting with such a paint, the anti-mildew effect eventually wears off due to aging of the paint film, and within a few years, there is a problem in that mold is generated.

0004

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention has been made with the object of providing a method for anti-mildew treatment of ceramic products that maintains the anti-mildew effect.

[0005]

[Means for Solving the Problems] That is, the anti-mildew treatment method for ceramic products of the present invention involves spraying copper metal onto the surface of a product immediately after it has been molded into a predetermined product shape from a compound such as cement and before curing. It is characterized by:

[0006]

[Example] Next, an example of the present invention will be described. FIG. 1 is a side view showing the implementation state of the method of this invention. In this invention, the means for manufacturing the cement product itself is a conventionally known means, such as a dry method, a papermaking method, an extrusion method, etc. After molding the molded product 1 using this method, copper 3 is sprayed onto the surface of the uncured molded product using a metal spraying machine 2 to form a copper film, and if necessary, the surface is further coated before or after primary curing. The product is then painted. Incidentally, a paint containing an antifungal agent may also be used as the top coat.

[0007]

[Operation] According to the above method, since the substrate 1 before curing is soft, even if copper is sprayed vigorously, the rebound rate is small and it is possible to spray the copper with a very high yield. Moreover, this copper film effectively prevents mold from forming.

[0008]

[Effects of the Invention] As described above, since this invention sprays copper metal onto the surface of a soft molded product before curing, it is possible to spray metal with very high yield with little reflection, and the sprayed copper The generation of mold can be effectively suppressed. Furthermore, since the copper is attached by thermal spraying, it has a strong adhesion to the product surface and does not easily peel off, resulting in a long-lasting anti-mildew effect.

[Brief explanation of the drawing]

1 is a side view of an apparatus implementing the method of the invention; FIG.

[Explanation of symbols]

1 Molded product 2 Metal spraying machine 3 Copper

Claims (1)

[Claims] 1. A method for anti-mildew treatment of ceramic products, which comprises spraying copper metal onto the surface of a product immediately after it has been molded into a predetermined product shape from a compound such as cement and before curing.