KR960004778B1 - Method for forming a color coatings for pattern and letter of metal plates - Google Patents

Abstract

The color coating method improves the quality of a wrist watch by obtaining a high-grade decoration. The color coating method comprises: degreasing metal with alkaline solution and rinsing with water; sensitizing and drying; attaching the patterned film and radiating ultraviolet ray; developing and heating at 200 deg.C; and etching and rinsing.

Description

How to plate color on metal plate pattern and text

The present invention relates to a method for forming a color plate on a metal plate pattern and characters by etching a metal plate such as a back plate of a watch and the like to express the engraved pattern and characters by gold plating.

Techniques for etching complex shapes and patterns using conventional acid-soluble metals with solvents of acidic solutions have become common.

Therefore, by etching the metal plate, such as the back plate of the clock by the conventional etching method such as engraved letters or intaglio patterns, the pattern and letters are expressed only in the color of the stainless steel itself, such as the color of the metal plate, so the letters do not stand out and there is no luxurious molding beauty There was a problem of low value as.

The present invention was devised to solve such a problem, and after engraving gold plate on the metal plate such as the back plate of the watch and coating the metal plate with guild paint, then rubbing the metal plate on the paper with the paint dissolving liquid on the metal plate pattern or letter part only. Paint remains and parts of it are removed.

The metal plate was immersed in the gold solution, and the gold plating on the outer surface of the letter was peeled off, and the paint applied to the engraved part was removed with a paint solution.The pattern and letters on the back of the watch became gold plated and letters. It is designed to have an elegant and luxurious decorative effect because it has the color of the metal plate itself.

Hereinafter, the present invention will be described in detail by way of examples.

Finished metal plate products such as clock face plate with weak alkali solution, washed several times with water, dried by treatment with photoresist, and attached to the surface of the face of the watch and printed on the surface of the watch face. Remove and develop to heat treatment at about 200 ℃ so that the photoresist is firmly attached to the metal plate, such as the back of the watch.

After modifying the photoresist of the pattern and the outer peripheral surface of the character formed on the back of the clock of the present invention with a brush or lacquer, it is naturally dried by air and immersed for 7 minutes to 14 minutes in a second chloride solution.

Patterns and characters may be formed using silk printing, pad printing, or laser to form patterns and characters.

The etched back plate formed with patterns and letters is washed with water, degreased with caustic soda, and then washed several times with water to densify corrosion by ultrasonic etching and washing with strong acid solution, and then gold-plated and dried in the usual way. .

At this time, it can be variously applied to various platings other than gold plating.

When plating, gold plating is applied to the outer surface of the watch as well as the intaglio pattern and text, so that the gold-plated watch backplate is dried with water and then the front of the watch backplate is coated with a guild paint. If you rub it, only the paint applied to the intaglio pattern and the character is left, and the paint on the outer peripheral surface is removed.

At this time, instead of a method of removing the paint by rubbing the clock back plate coated with paint on the paper on which the paint dissolving liquid is applied, it may be removed by corresponding friction with the rotary polishing cloth.

Therefore, the back of the watch is immersed in the gold solution (gold stripping solution) of 30 ~ 50 ℃ to peel off the gold coated in addition to the intaglio pattern and characters, and the gold plated on the intaglio and characters are not peeled off because the paint is applied to the surface Do not.

When the gold on the pattern and the outer circumferential surface is peeled off and then washed with water, the paint remaining on the engraved pattern and the text portion is removed with a paint solution to obtain a gold plated watch back plate only on the pattern and the text portion.

Briefly summarized embodiments of the present invention as follows.

Example 1

Degrease the back of the watch with a weak alkali solution, and then wash the water → Dry → Treat the photoresist and dry it → Attach the pattern and the text to the back of the watch → UV irradiation (pattern and text formation) → Remove the film and develop → Heat treatment at about 200 ℃ → Modifying the outer surface of letters and letters → Natural drying → Etching 7--14 minutes in two-color chloride solution → Washing with water → Degreasing with caustic soda → Washing with water → Ultrasonic etching with strong acid solution, washing → Gold plating (normal method) → Water washing and drying → Guild paint application → Rubbing on paper with paint solution such as thinner to remove paint → Gold peeling with gold solution of 30 ~ 50 ℃ → Water washing and drying → Paint removal of negative character with paint solution such as thinner → Finished product.

Example 2

Degreasing the back of the watch with a weak alkaline solution, and then washing with water → drying → printing patterns and texts Silk printing → heat treatment at about 200 ° C → modifying patterns and texts circumferentially → natural drying → etching in salt paint solution for 7-14 minutes → washing with water → Degreasing with caustic soda → Washing water → Ultrasonic etching and washing in strong acid solution → Gold plating (normal method) → Washing and drying water → Applying with guild paint → Rubbing on paper with paint solution such as thinner and removing paint → 30- Gold stripping → water washing and drying → paint removal of engraved character part with paint solution such as thinner → finished product.

Example 3

Degrease the back of the watch with a weak alkaline solution, and then wash the water → Print letters and patterns on the pad → Heat treatment at about 200 ° C → Modify the outer surface of the letters and letters → Natural drying → Etch for 7-14 minutes in a two-chloride solution → Water washing → Caustic Deodorizing with Soda → Washing → Ultrasonic etching to strong acid solution, washing → Gold plating (normal method) → Washing and drying → Gild paint application → Paint on paper with paint solution such as thinner to remove paint → 30-50 ℃ Gold peeling → Gold cleaning with water soluble solution → Drying → Paint removal of engraved letter part with paint solution such as thinner → Finished product.

Example 4

Degrease the back of the watch with a weak alkaline solution, and then rinse with water and dry with a laser. Pattern and letter design → Etch in a 7-color chloride solution for 7-14 minutes → Water washing → Black or gold plating (ordinary method) → Guild paint application → Rub the paper with paint dissolving liquid, such as thinner, to remove the paint → gold peeling with 30-50 ℃ gold dissolving solution → washing and drying → paint dissolving with thinner such as thinner → finished product.

As described above, the present invention forms a pattern and a character of a desired color such as gold plating in forming a pattern character on a metal plate such as a watch back plate, thereby making the character and pattern stand out more clearly and expressing a high-quality decoration. It has become effective.

Claims (5)

In a known method of printing using a pattern film on a metal plate and gold plating after etching, a photoresist treatment, a pattern and a letter pattern film are attached to a degreased metal plate such as a clock face plate, dried, and irradiated with ultraviolet rays to form a pattern and a character. After removing the film, it is developed, heat-treated at about 200 ℃, and then dried naturally and etched in a 2nd chloride solution for 7-14 minutes, followed by water rinsing, caustic soda degreasing, water rinsing, and ultrasonic etching and washing with strong acid solution. Gold plating is carried out by usual method, and after washing with water and drying, guild paint is applied. Rubbing the metal plate on the paper with paint dissolving solution to remove the guild paint, peeling gold plating other than patterns and characters from the gold solution at 30-50 ° C, Method of forming color plating on metal plate's pattern and letters to get finished product by removing intaglio and character part's paint. The method according to claim 1, wherein the printed sheet is printed on a degreased metal plate such as a clock face plate to form a pattern and letters, and then the silk print paper is removed and developed. Forming a pattern and letters by etching in a 7-7 minutes in the fill solution to form a color plating on the pattern and letters of the metal plate. The method of claim 1, wherein after printing the pads on a degreased metal plate such as a clock face plate to form a pattern and letters, heat treatment at about 200 ° C. to dry them naturally, and to etch the 7-chloride solution for 7-14 minutes. Forming a color plating method on the metal plate pattern and letters. The method of claim 1, after the black plate (black) on the metal plate, the pattern and the character with a laser, etched in the chlorine chloride solution for 7-14 minutes, then black-plated and applied with a guild paint rubbed on a paper with paint solution A metal plate obtained by removing a guild paint by peeling black plating other than patterns and characters into a solution of 30-50 ° C. and removing paint of the engravings and characters with a paint solution such as thinner. How to form color plating on the pattern and characters of the. The etched metal plate is laser patterned and printed on the etched metal plate, and then etched in a 2nd chloride solution for 7-14 minutes, then gold-plated and coated with a guild paint to remove friction from the guild paint. The pattern and other gold plating were peeled off at 30-50 ° C., and the metal plate pattern and letters were obtained by removing the engraved pattern and the paint of the letter part with a paint melter such as thinner. Way.