JPH0426913B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for forming metal foil group patterns of various sizes, regular or irregular shapes, so-called arbitrary shapes, on the surface of a base material.

Conventional technology The above-mentioned base materials have conventionally been used, that is, base materials containing various materials such as metal, glass, concrete, inorganic materials such as ceramics, high melting point resins, films, stone, wood, vulcanized rubber, leather, oil cloth, etc. The methods used to form patterns on the surface include hand-painting using pigments, or gluing colored paper or film cut into a specially desired contour.

However, there is no known method for forming arbitrary patterns using fine pieces of metal foil because manual bonding is difficult.

Problems to be Solved However, the purpose of the method according to the present invention is to provide a method for forming foil group patterns of arbitrary shapes, which are regular or irregular, of various sizes, on the surface of such a substrate. There is. Furthermore, the method of the present invention
By applying a unique process to polyamide type synthetic resin and using it as an adhesive between the base material and foil, we aim to form a foil group pattern on the base material surface with excellent durability, water resistance, and solvent resistance. There is. Furthermore, the method of the present invention is a method for obtaining a novel foil pattern in which an arbitrary, planar foil group pattern is applied to the surface of a base material, and the adhesive does not appear between the base material and the foil. is intended to provide.

Means for Solving the Problems In order to achieve the above-mentioned objects, the present invention provides a method for forming a foil group pattern of an arbitrary shape on the surface of a base material, and a method for forming a foil group pattern of an arbitrary shape on the surface of a substrate, by contacting polyamide-type synthetic resin powder with an ethanol solvent and semi-conducting it. A molten resin is generated, this semi-molten resin is compressed between the mold release surfaces of a mold release material, and left to cool, and then peeled off to form a group of resin flakes due to network splitting, and a group of resin flakes obtained on the surface of the base material. A method for forming a pattern of foil groups on the surface of the base material after drying, by sprinkling the foil onto a desired contour and then sprinkling the foil onto the resin thin piece, bonding the base material and the foil by heat setting, and cleaning the unbonded foil after drying. It is a feature.

Hereinafter, an example of a method for forming an arbitrary foil group pattern on the surface of a base material according to the present invention will be described.

Polyamide synthetic resin powder is brought into contact with an ethanol solvent to semi-dissolve it. Semi-dissolution is a so-called sheave-like dissolution, and if it is completely dissolved, subsequent steps cannot be carried out.

The obtained semi-molten resin is held between the release surfaces of a release material such as release paper. As the mold release material, in addition to the above-mentioned paper, a sheet having a mold release ability such as Teflon (trade name) or nylon may be used.

Next, one side of the mold release material is placed on a suitable flat surface, and rolling pressure is applied from the top surface of the mold release material using, for example, a roller at 20 kg. Repeated pressing stretches the semi-molten resin between the release surfaces to a thickness of about 11.7 to 25 microns. At this time, since the semi-molten resin is in contact with the mold release surface of the mold release material, it can be easily stretched.

Furthermore, the solvent contained in the semi-dissolved resin facilitates its stretching action.

Since the stretched and pressed resin is semi-dissolved,
Random network cracks occur, and the present invention takes advantage of these cracks.

After stretching, the upper mold release material is peeled off and air dried for 5 to 10 minutes. In the peeling process, the resin is mainly split from the mesh-like crack line portions, and so-called flake-like resin flakes of various sizes and irregular arbitrary shapes of approximately 5 mm or less are formed, such as pseudo star shapes and egg shapes. The resin flakes are appropriately sieved and selected to adjust their size.

In the present invention, an arbitrary foil pattern of gold, silver, platinum, aluminum, etc. is expressed on the surface of a base material using the resin flakes obtained in the above-mentioned process. Of course, the arbitrary shape includes both an intentional shape, for example, a pattern such as a polka dot, and a case where an irregular pointillist pattern is arranged.

Subsequently, the resin flakes are directly sprinkled onto the surface of the target base material in a desired shape. Since the resin flakes are formed by being compressed between mold release materials, they are placed on the upper surface of the base material not in a three-dimensional manner but in a two-dimensional manner.

Next, the foil is scattered or placed on the resin flake.
At this time, it is not necessary to place the foil piece accurately; it is sufficient that the foil piece is positioned at least on the resin thin piece.

That is, the thin piece not placed on the resin thin piece will be finally removed. Then, for example, if you heat set it at 120℃ for 20 seconds under a pressure of about 2 tons and let it cool,
The resin flakes firmly adhere to the base material and the foil due to the adhesive properties of the resin. By cleaning the unbonded foil by taking into consideration the adhesion state of the foil by cooling it,
A foil of arbitrary shape is depicted that is firmly adhered to the surface of the substrate.

In addition, after spraying or applying the solvent on the surface of the base material,
If resin flakes are spread, and then a foil piece is placed on top of the resin flakes and heat set, the solvent will be prevented from evaporating due to the nature of the base material and will have no place to escape, and the solvent will be actively present on the adhesive surface. There is a defect in which the resin flakes tend to peel off.

Effects of the Invention In the initial stage of the present invention, a powder of polyamide type synthetic resin is brought into contact with a solvent to produce a semi-molten resin in the form of a shear bed, and the semi-molten resin is pressed between the mold release surfaces of a mold release material and left to cool. This process forms a thin layer of resin between the mold release materials, and since this semi-molten resin is in the form of a so-called shear bed, when the mold release material is peeled off, it actively forms an irregular flake-like network. This will cause cracks to form.

Upon exfoliation of this resin material, resin flakes of various shapes, such as irregular star shapes, egg shapes, etc., with unique reticular edges are obtained. Furthermore, since a mold release agent is used, the resin material can be easily peeled off, and there is an advantage that the network cracks are immediately split during the peeling process to obtain resin flakes.

The obtained resin flakes have a completely irregular shape, and because they are thin flakes, they can be spread or arranged flatly on the substrate surface in any arbitrary shape. becomes easier. Furthermore, since the base material, the resin flakes, and the foils are held flat without movement, there is an effect that heat setting can be easily carried out. Overall, the present invention provides a process for obtaining a unique group of resin flakes, a method of forming a foil group pattern using the resin flakes, and a method for forming a foil group pattern of an arbitrary shape on the surface of a substrate. The semi-molten resin is in the form of a so-called shear bet, and since it contains a solvent, if this state is inserted between the mold release materials and pressurized, irregular resin flakes will be formed. Therefore, the formation of the resin flakes is simple and quick, and the formation of a foil pattern of any shape on the surface of the base material using the obtained resin flakes is easy. Since the foils are flat and thermally bonded directly by heat setting without using a solvent, the bonding of the foil group is extremely strong and does not cause unevenness.

In addition, since heat-set polyamide synthetic resin is used as the adhesive, the foil portion on which the foil group pattern is formed on the base material by the method of the present invention does not peel off easily and has excellent durability, water resistance, and solvent resistance. Becomes excellent. In addition, if gold, silver, film, metal, minerals, etc. are mixed in at the semi-molten resin stage,
It is also possible to express novel metal foil patterns.

Claims (1)

[Claims] 1 A polyamide synthetic resin powder is brought into contact with an ethanol solvent to produce a semi-dissolved resin, this semi-dissolved resin is compressed and left to cool between the mold release surfaces of a mold release material, and then peeled off to form a group of resin flakes due to network splitting. The obtained resin flakes were spread on the surface of the base material in a desired contour, and the foil was also spread on the resin flakes and the base material and the foil were bonded by heat setting. After drying, the unbonded foil was cleaned. A method for forming a foil group pattern of an arbitrary shape on the surface of a base material, characterized by: