JP2007086700A - Spectacles components ornamented by laser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide spectacles components formed with fine patterns without degrading their quality by using a laser. <P>SOLUTION: The spectacles components are provided, formed with the fine patterns on the spectacles component surfaces without lowering the quality due to degradation in adhesion and to sweating resistance by forming leafing layers consisting of laser shielding bodies in coating films, and a method of producing the same is also provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a spectacle part decorated with a laser.

As for eyeglass frames, in addition to eyeglasses for correction, demand for decorative items has increased, and the development of products with higher fashionability is progressing.
In particular, with respect to the surface treatment, products decorated with various patterns by painting and the like are planned, and responding to user preferences by increasing the number of colors in the same design.

There are methods such as pad printing and dyeing as a method for applying a pattern to spectacle parts. By partially irradiating the surface of the spectacle part with a laser, the coating film formed on the spectacle part is partially incinerated and removed. A method of forming a pattern has been developed.
The pattern forming method by laser irradiation is formed of a curved surface and can form a fine pattern on the surface of a spectacle frame having a small surface area.

  However, in the method of partially removing the coating film by laser irradiation, the deleted coating film is also affected by the heat of the laser, and the adhesion between the spectacle parts and the coating film is reduced, and the film is easily peeled off. Has occurred.

  Furthermore, because of the characteristics of the environment in which the glasses frame is used, there are many cases where living water such as sweat and bath adheres. It is known that the adhering sweat or the like enters the interface in the lateral direction from the partially exposed spectacle component surface and the edge of the coating film, causing a decrease in adhesion. In the method of partially removing the coating film with a laser, the edge of the coating film into which sweat or the like enters increases, which causes a problem from the viewpoint of durability.

  Japanese Patent Laid-Open No. 56-165584   JP-A 61-289322

  In view of such circumstances, the present invention provides a spectacle component formed using a laser without degrading the quality of a fine pattern.

Means for Solving the Invention

The present invention has been made based on such a technical background.
That is, by providing a leafing layer with a flaky pigment made of a laser blocker in a coating film, a spectacle component having a fine pattern formed on the surface of the spectacle component without deterioration in quality such as adhesion reduction and sweat resistance is provided. . Furthermore, the manufacturing method is provided.

  That is, the present invention provides (1) a paint resin layer outside a leafing layer formed by coating a spectacle part surface with a paint containing a flaky pigment comprising a laser blocker, and the flaky pigment is formed near the part surface. This is a spectacle part characterized in that a decorative pattern is formed by partially removing the material by incineration with a laser to reveal the metallic luster emitted by the leafing layer.

  Further, the present invention resides in (2) the spectacle part according to (1), wherein the flaky pigment is a metal powder having a maximum diameter of 60 microns or less.

  The present invention is also characterized in that (3) the flaky pigment is obtained by using a mica powder having a maximum diameter of 60 microns or less as a base material and neat a metal oxide colored layer. It exists in spectacle parts.

  The present invention also provides (4) a coating material containing a flaky pigment comprising a laser blocking body on the surface of a spectacle component, and a laser blocking layer on the surface of the spectacle component by a leafing layer in which the flaky pigment is oriented. And a method for decorating spectacle parts, comprising: exposing the paint resin layer outside the laser blocking layer to a part of the laser beam by incineration removal to expose the leafing layer.

  The present invention also provides (5) a coating material containing a flaky pigment comprising a laser blocking body on the surface of a spectacle component, and a laser blocking layer on the surface of the spectacle component by a leafing layer in which the flaky pigment is oriented. A step of forming a decorative layer colored with an organic pigment on the blocking layer; a step of partially removing the decorative layer by incineration with a laser and exposing the blocking layer; It exists in the decoration method of spectacles parts.

The invention's effect

  According to the present invention, it is possible to form a durable fine decorative pattern on the surface of a spectacle component using a laser.

  FIG. 1 is a schematic cross-sectional view of a decoration method using a laser currently used in the eyeglass industry. A paint made of a resin colored with an organic pigment is applied onto a metallic spectacle part, and a pattern is formed by incineration removal with a laser.

  However, the periphery of the incinerated resin and the exposed surface of the metallic spectacle component are absorbed by the energy given by the irradiation and the temperature is temporarily increased by the laser irradiation. Therefore, the vicinity of the exposed portion of the coating resin is lower than the primary adhesion obtained during coating.

  In addition, since the eyeglass frame often comes into contact with moisture such as sweat, bathing, and sea bathing by the wearer, the moisture may enter the interface between the metal eyeglass component surface and the coating film and cause deterioration of adhesion over time. It is publicly known.

  If a coating film on the surface of a metal part is partially incinerated and removed by applying a decorative pattern, a lot of coating film ends are generated, moisture intrusion portions increase, and the decrease in adhesion is accelerated.

  In this way, in the conventional method, the pattern formation on the coating film on the surface of the metal part by the laser causes a decrease in the adhesion of the coating film. Therefore, after the pattern formation by the laser, the coating film is formed again on the pattern forming portion. Measures have been taken, such as preventing the decrease in adhesion.

  FIG. 2 is a schematic cross-sectional view of the decoration method using the laser of the present invention. A paint containing a flaky pigment composed of a laser blocker is applied, and the flaky pigment forms a leafing layer in the vicinity of the part surface.

  The leafing layer is a phenomenon in which flaky pigments are oriented like leaves in a coating film to cover the surface. High hiding power and gloss.

  In addition to flaky pigments, it is possible to form a laser blocking layer, such as a matting agent for coatings made from silica, but it is necessary to increase the amount of coating because the shielding power is small and it is necessary to increase the blending amount. Reduces physical properties. Moreover, since the surface exposed by laser irradiation does not give a high-class feeling, it is inferior to the flaky pigment.

  When the coating film having the leafing layer is irradiated with a laser, the leafing layer becomes a laser blocking layer, so that the coating resin outside the leafing layer can be selectively incinerated. For this reason, there is little thermal effect on the interface between the metal part surface and the coating film, and there is no decrease in adhesion of the coating film.

  The leafing layer is an alignment layer in which fine flaky pigments overlap each other, and a coating resin is also present inside the layer. Therefore, since it has a large anchoring effect on the coating resin remaining on the leafing layer after being removed by incineration with a laser, there is no decrease in adhesion.

  Furthermore, since the moisture entering the coating film must enter the spectacle component surface and the coating film interface through the leafing layer, the approach path becomes long and the decrease in secondary adhesion is negligible.

  As the flaky pigment used as the laser blocker, metal powders such as aluminum and silver can be raised, but considering the corrosion resistance of the flaky pigment exposed by the laser, mica powder coated with a metal oxide is preferable. Furthermore, the particle size is preferably 60 microns or less in consideration of preventing adhesion deterioration due to the anchor effect and considering the metallic feeling of the appearing leafing layer.

  As a pattern obtained by the present invention, a decorative geometric pattern, a brand character, or the like can be considered. In addition, since there is no need to re-coat the film after laser irradiation, there is also a decoration that corresponds to each user, such as placing a laser device at the retail store front and forming the initial or name of the user who purchased the spectacle frame It becomes possible.

  EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by these Examples.

[Example 1]
Urethane resin paint containing 3 w% of white pearl-like mica powder (maximum diameter 60 microns) coated with titanium oxide as a metal oxide colored layer on the arm surface made of metal material and 5% of transparent red pigment, and syringe It applied using.
When baked at 170 ° C. for 1 hour, a pink pearl-like coating film having a thickness of 60 microns and the mica powder forming a leafing layer in the upper layer portion in the coating film was obtained.
When the surface of the coating film was irradiated with a carbon dioxide laser in a geometric pattern, the leafing layer made of mica powder was exposed in the irradiated part, and a white metallic pattern was obtained on the pink pearl. (See Figure 2)
The arm on which the pattern was formed was subjected to a warm water test (soaked in hot water at 80 ° C. for 1 hour, and then a tape peeling test), which is generally performed as an eyeglass frame durability test. No deterioration in quality due to co-laser irradiation was confirmed.

[Example 2]
A urethane resin paint in which 5 w% of an aluminum flake pigment (maximum diameter 20 microns) was mixed was applied to a part of the arm back surface made of a metal material using a syringe.
When baking was performed at 130 ° C. for 30 minutes, a white metallic-tone coating film was obtained having a thickness of 40 microns and the aluminum flake pigment forming a leafing layer at the upper layer portion in the coating film. (Undercoat paint)
Furthermore, a urethane resin paint mixed with 1% by weight of carbun black was used as a colored layer, and it was overcoated with a syringe and baked at 170 ° C. for 1 hour. A black coating film was formed.
When the surface of the coating film was irradiated with a carbon dioxide laser in a geometric pattern, the leafing layer of the aluminum flake pigment was exposed, and a white metallic pattern was formed on the black film. (See Figure 3)
The arm on which the pattern was formed was subjected to a warm water test (soaked in hot water at 80 ° C. for 1 hour, and then a tape peeling test), which is generally performed as an eyeglass frame durability test. No deterioration in quality due to co-laser irradiation was confirmed.

Example 3
For spectacle frame parts made of metal,
(1) Epoxy paint as a primer (2) Urethane resin paint mixed with 3% by weight of red pearl-like mica powder (maximum diameter 60 microns) coated with iron oxide as a metal oxide coloring layer (3) Transparent as a coloring layer Urethane resin paint mixed with 10% blue organic pigment is applied in order by spray coating and baked at 170 ° C for 60 minutes. The red pearl-colored pigment has a leafing layer inside the transparent blue layer with a thickness of 60 microns A semi-metallic paint film having a purple color as a whole was formed.
When the coating film on the arm surface was irradiated with a carbon dioxide laser in a geometric pattern, a leafing layer of mica powder coated with iron oxide was exposed, and a red metallic pattern was formed on a purple background.
The arm on which the pattern was formed was subjected to a warm water test (soaked in hot water at 80 ° C for 1 hour, and then a tape peeling test), which is generally performed as an eyeglass frame durability test. No deterioration in quality due to co-laser irradiation was confirmed.

  Cross-sectional schematic diagram of laser decoration pattern by conventional method   Cross-sectional schematic enlarged view of laser decoration pattern by conventional method   Example 1 Schematic cross section of a decorative pattern   Example 2 Schematic cross section of decorative pattern   Example 3 Schematic cross section of decorative pattern

Explanation of symbols

A Metal eyeglass parts B Urethane resin coating C Incineration by laser irradiation (pattern part)
D Adhesion drop by laser heating E Leafing layer F Color layer G Primer layer

Claims (5)

  The glass component surface is coated with a paint containing a flaky pigment consisting of a laser blocker, and the coating resin layer outside the leafing layer formed by the flaky pigment near the surface of the component is partially incinerated and removed by laser. Eyeglass parts characterized by forming a decorative pattern by revealing the metallic luster emitted by the leafing layer   2. The spectacle component according to claim 1, wherein the flaky pigment is a metal powder having a maximum diameter of 60 microns or less.   2. The spectacle part according to claim 1, wherein the flaky pigment is a mica powder having a maximum diameter of 60 microns or less as a base material and coated with a metal oxide colored layer.   Coating the surface of the spectacle component with a paint containing a flaky pigment made of a laser blocker, and forming a laser blocking layer on the surface of the spectacle component with a leafing layer in which the flaky pigment is oriented; A method for decorating spectacle parts, comprising the step of exposing the leafing layer by irradiating the paint resin layer outside the layer partially by incineration removal with a laser   Coating the surface of the spectacle component with a paint containing a flaky pigment made of a laser blocker, and forming a laser blocking layer on the surface of the spectacle component with a leafing layer in which the flaky pigment is oriented; A method for decorating spectacle parts, comprising: forming a decorative layer colored with an organic pigment; and partially incinerating and removing the decorative layer with a laser to expose the blocking layer;

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