JPS62238899A - Production of decorative paper having cloud pattern - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a method for producing decorative paper used for interior decoration materials of houses, decorative plywood, etc. The present invention relates to a method for manufacturing decorative paper.

(B) Problems to be Solved by the Prior Art and the Invention Conventionally, various patterns have been applied to decorative paper by printing, printing, or other means. These patterns generally use different colors.

However, such a design alone lacks design variation, and it is desired to add cloud-shaped patterns, shading patterns, etc. using the same color to the decorative paper.

Therefore, the present invention provides a method for imparting a cloud-shaped pattern to decorative paper using a so-called roll transfer method.

(c) Means and operation for solving the problem, that is, the present invention provides a method for manufacturing decorative paper by applying a paint to the peripheral surface of a roll and transferring the paint to a thin sheet. Provide a peripheral surface area where the paint can adhere to the maximum area,
This invention relates to a method for producing decorative paper having a cloud-shaped pattern, characterized in that the coating area per unit circumferential area gradually decreases from the circumferential surface toward the end of the roll.

In the present invention, the cloud-shaped pattern refers to a pattern in the shape of a trailing cloud, and specifically, it has a visually dark-colored part (hereinafter referred to as the "dark-colored part"), and outside of the dark-colored part. It means a pattern that visually feels lighter as you move towards it.

In the present invention, a decorative paper is manufactured by applying a paint to the circumferential surface of a roll and transferring the paint to a thin sheet to impart a pattern. Therefore, in order to provide a cloud-shaped pattern, it is necessary to form on the roll a part with a large area of paint adhesion (this part is transferred and becomes a dark colored part) and a part with a small area of paint adhesion. However, simply forming areas with a large area of paint adhesion and areas with a small area of adhesion does not result in a cloud-shaped pattern; instead, the area of adhesion must gradually become smaller from the area where the area of adhesion is large toward the outside. . The method for applying such paint must be as shown in FIG.

FIG. 1 is a schematic diagram showing a developed state of the peripheral surface of a roll to which paint is adhered. L represents the roll axis direction, m represents the unit width of the roll, φ represents the diameter of the roll, and the shaded area represents the adhered paint. Since FIG. 1 is an expanded view of the circumferential surface of the roll, the length in the direction perpendicular to the roll axis direction is πφ. In the present invention, the unit circumferential area means mπφ.

Therefore, the method of adhesion of paint as shown in Fig. 1 is based on the circumferential surface area (m, π
φ), and the adhesion area of paint per unit circumferential area decreases toward the end of the roll (rnlπφ−m π
φ−m3πφ−m9πφ−mriπφ). In this case, the part of the thin sheet that comes into contact with the peripheral surface (m, πφ) becomes a dark colored part, and the other peripheral surface (m, πφ2m3π
The portion of the thin sheet that comes into contact with φ, m4πφ1m, πφ) gradually becomes lighter in color. Specifically, the simplest method for applying the paint to the roll is to make four parts of the circumferential surface of the roll corresponding to the parts to which the paint is applied. In this case, a cloud-shaped pattern is formed by providing - number of recesses in the roll.

Another method, as shown in Fig. 2, is to form a large number of recesses (1) with uniform openings (2) on the roll circumferential surface, so that the number of four recesses (1) per unit circumferential area is maximized. Peripheral part (
m, πφ), and the number of recesses (11) per unit circumferential area is gradually decreased from the peripheral surface toward the end of the roll (m, πφ−m πφ−m, πφ−=m, rc
This can also be done by φ). Further, as shown in FIG. 3, a large number of recesses fl) having mouths (2) with different areas are provided on the roll peripheral surface, and a peripheral surface part (m, πφ) is provided in which a recess ti) with the largest area is arranged, and the peripheral surface part This can also be done by arranging concave portions (11) with openings (2) that gradually become smaller in area (m, πφ−m27r φ−′mlπφ) toward the end of the roll. It is transferred to the thin sheet discontinuously, and the areas with high paint density become dark colored areas, and as it goes to the outside, the density of the paint gradually decreases, and the color gradually appears to be lighter visually, forming a one-shaped pattern.

The above-described recesses may be formed in the roll by providing only one pattern or a plurality of patterns over the entire width of the roll. In addition, in the above method, the paint is applied to a roll with concave portions and transferred directly to the thin sheet, but the paint adhered to the roll with four parts is once re-adhered to a smooth roll, and then transferred from this smooth roll. A method of transferring onto a thin sheet 1- can also be adopted.

Also, it can be used flat without using a gravure roll. It is also possible to use a spray method to spray paint onto a t-roll to create a cloud-shaped pattern by changing the spray surface, and then transfer this onto a thin sheet.

As the thin sheet used in the present invention, paper such as natural paper or synthetic paper, metal foil such as aluminum foil, a mixture of paper and metal foil, etc. are used. Further, as the roll used in the present invention, as described above, a gravure roll, a smooth roll, etc. are used.

(d) Effects of the Invention As explained above, by employing the method of the present invention, decorative paper having a cloud-shaped pattern can be easily obtained by changing the area of coating applied to the roll. Therefore, it is possible to easily obtain decorative paper with a rich variety of designs.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the developed state of the circumferential surface of a roll to which paint is adhered, and the shaded area represents the area to which the paint is adhered. Fig. 2 is a schematic diagram showing the circumferential surface of a roll in which concave portions with uniform mouth areas are formed, and Fig. 3 is a schematic diagram in which the circumferential surface of a roll in which concave portions with varying mouth areas are formed is developed. It is.

Claims (4)

[Claims] (1) In a method of manufacturing decorative paper by applying paint to the circumferential surface of a roll and transferring the paint to a thin sheet, a peripheral surface portion having the maximum paint adhesion area per unit circumferential area is provided, A method for producing decorative paper having a cloud-shaped pattern, characterized in that the coating area per unit circumferential area gradually decreases from the circumferential surface toward the end of the roll. (2) A method for producing decorative paper having a cloud-shaped pattern according to claim (1), in which the roll is a gravure roll having a large number of concave portions where paint is deposited. (3) Provide a peripheral surface where the area of the opening of the recess is uniform and the number of recesses per unit circumferential area is the maximum, and the number of recesses per unit circumferential area is gradually increased from the peripheral surface toward the end of the roll. A method for producing decorative paper having a cloud-shaped pattern according to claim (2), which uses a gravure roll having a reduced amount. (4) By changing the area of the opening of the recess, place the recess with the maximum opening area on the peripheral surface where the paint adhesion area per unit circumferential area is the largest, and extend the area from the peripheral surface to the end of the roll. A method for producing decorative paper having a cloud-shaped pattern according to claim (2), which uses a gravure roll in which concave portions with openings gradually decreasing in area are arranged.