JPS61271063A - Formation of thin film - Google Patents

Abstract

PURPOSE:To form the titled thin film having uniform thickness on a platy material at high speed and at low cost by applying a direct drying means only to the upper part of the platy material when the platy material provided with a liq. layer is set upright and dried. CONSTITUTION:When a thin film is formed on the surface of a platy material, the platy material 11 is set upright, a liq. from a liq. vessel 23 is run down under such conditions from the upper end part of the platy material 11 to the other end, then the platy material 11 except the upper end part is covered with a shielding plate 21 and infrared rays are irradiated from an infrared lamp 22 from both sides. When the platy material 11 is dried mainly from the upper end side in this way, the material can be dried without being greatly affected by the weight of the liq. and hence a thin film having uniform thickness can be formed on the whole surface of the material.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for forming a thin film of uniform thickness on the surface of a plate-like object.

(Prior Art) The main conventional thin film forming methods are the Whirler method and the continuous flow method.

Among these methods, the Whyler method is able to obtain horizontal thinness by laying down a plate-shaped object, placing the liquid to form a thin film on it, and rotating the plate-shaped object at high speed to evenly distribute the liquid. .

On the other hand, in the continuous flow method, as shown in FIG.
1. Stand it up by hanging it or supporting it from the side,
Pour the liquid from the upper end of the plate-shaped object (111 into a liquid tank, etc.)
Uniformly distributes the liquid using the relationship between the liquid's own weight, viscosity, and hardening. Next, as shown in Figure 5, an infrared lamp (22
Dry the liquid as soon as possible using a first-class drying method to form a thin film. This method allows production with less manpower and equipment,
Moreover, it can be used for continuous production by winding method or the like.

(Problems to be Solved by the Invention) λ First, in the case of wheeler cutting, the plate-like objects must be laid down one by one and rotated, which reduces the time and effort required each time they are fixed and the location of the rotation. Due to problems, it was not possible to handle mass production or large plate-shaped items.

In addition, in the continuous flow method, as shown in the thin film thickness distribution 01) shown in Figure 4, the thin film becomes thin at the upper end of the plate due to the weight of the liquid, making it uniform. It wasn't thick.

(Means for solving the problem) A thin film forming method in which a liquid layer is provided on the surface of a valve plate-like object, and a thin film is provided on the surface of the plate-like object by applying a drying means to the liquid layer and drying it. , a thin film forming method is used, which is characterized in that when drying a liquid layer, a plate-like object is stood up and a drying means is directly applied only to the upper end of the plate-like object.

(Function) As shown in the curve shown in FIG. The thickness of the film was almost the same as that of the central part, resulting in a plate-like material.

This will be explained in detail using

First, as shown in Fig. 3, the plate-shaped object (111) is stood up, and in this state, the liquid from the liquid tank is poured into the upper end of the plate-shaped object (111) while moving from one end of the upper end to the other end. The liquid is allowed to flow evenly at the upper end.

Next, as shown in Fig. 1, a plate-shaped object (IB) is covered with shielding plates (2+1) except for the upper end, and infrared rays generated by an infrared lamp are irradiated from both sides of the plate as shown in Fig. 2. As a result, the plate-like object 1 is dried mainly from the upper end, and is dried in a manner that is less affected by the weight of the liquid.As a result, the thickness distribution of the thin film Gυ as shown in Fig. 4 is obtained.
A thin film having a uniform thickness throughout is formed on the plate-shaped object (111).

Note that the present invention is not limited to the above-mentioned embodiments; if the drying means is infrared rays, it is suitable for making the thickness of the liquid uniform (or for materials with low viscosity or slow drying). When the drying means is hot air, it is suitable for making the film thickness uniform even though the liquid has a light self-weight (or has high viscosity or dries quickly), and when the drying means is hot wire, it is suitable for making the film thickness uniform. suitable for

Further, in the case of the shielding plate of this embodiment, a flat plate of the same thickness was used, but the upper end of the shielding plate may have a mesh shape or the thickness of the shielding plate may be thinner as it goes toward the upper end. Further, although the drying means is limited to the upper end of the plate-like object by using a shielding plate, the drying means may be given directionality and applied only to the upper end of the plate-like object.

Furthermore, although this embodiment has been described in the case where liquid is applied to a plate-like object of a normal size from one end to the other, it is also possible to apply liquid to the plate-like object all at once from the upper end. Good too.

In addition, in the case of a large plate-like object or a rolled plate-like object, the liquid overflow and drying are performed as an integrated procedure, and the drying means follows the liquid over the upper end of the plate-like object at regular intervals. Of course, the thin film may be formed from one end to the other end.

(Effects of the Invention) According to the present invention, even continuous plate-like objects such as large-scale plate-like objects and rolled plate-like objects do not require much manpower or equipment, and even when a thin film with a uniform thickness is applied by the pouring method, it is possible to It can be formed on shaped objects. As a result, plate-like products can be manufactured at high speed and at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention in a dry state, FIG. 2 is a side view of the same, and FIG. 3 is a perspective view of an embodiment of the present invention in a dry state. FIG. 4 is a perspective view of the thin film during formation, FIG. 4 is a distribution curve of the thickness of the thin film on the completed plate-like object, and FIG.
It is a side view showing the drying state of the conventional continuous flow method. (111... plate-like object Gl+... shielding plate (
221...Infrared lamp c23i...Liquid tank glue...Distribution curve according to the present invention O3...Distribution curve according to the conventional shading method
Applicant Figure 3 Figure 1 Figure 8 Distance from the top of the leg Figure 2 Figure 5r! ! J

Claims (1)

[Claims] 1) A thin film forming method in which a liquid layer is provided on the surface of a plate-like object, and a thin film is formed on the surface of the plate-like object by applying a drying means to the liquid layer and drying the liquid layer. A method for forming a thin film, characterized in that during drying, the plate-like object is stood up and a drying means is directly applied only to the upper end of the plate-like object. 2) Claim 1, characterized in that when drying the liquid layer, the drying means is applied to the plate-like object in which the plate-like object is stood up and shielded except for the upper end of the plate-like object. Thin film forming method described in section. 3) The thin film forming method according to claim 1, wherein the drying means is irradiation with heat rays. 4) The method for forming a thin film according to claim 1, wherein the drying means is irradiation with infrared rays. 5) The thin film forming method according to claim 1, wherein the drying means is irradiation with hot air.