JPH0720408A - Production of tinted spectacle frame parts - Google Patents

Abstract

PURPOSE:To lower the cost for tinting with simple stages as the conventional color inserting is intricate in stages and is high in cost. CONSTITUTION:This process for production of tinted spectacle frame parts comprises (1) preparing the spectacle frame parts having recessed parts 6; (2) preparing a transfer sheet 5 which is formed with 'tinting transfer patterns' 3 of the shape fitting to the recessed parts 6 on a base material sheet 1 and is laminated with a pressure sensitive adhesive on the surface of the transfer patterns 3; (3) pressing the transfer patterns 3 to the recessed parts 6 to compression bond the transfer patterns 3 to the bottoms of the recessed parts 6; and (4) separating the base material sheet 1 from the transfer patterns 3 after compression bonding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a method of manufacturing colored eyeglass frame parts.

[0002]

2. Description of the Related Art Nowadays, eyeglasses are required to have high fashionability as one of means for fashioning, in addition to correcting visual acuity. Therefore, various decorations are applied to the eyeglass frame parts. Coloring is one of the decorations. this is,
The eyeglass frame component, for example, a metal rim or temple is provided with a recess, and the recess is colored. Of FIG.
See (2). There are three types of color coding, one type of decoration called color coding, the operation or method of color coding, and the color-coded object. Coloring materials are often colored resin (paint or other molding resin) or cloisonne, which is different from the rim or temple itself.

Conventionally, a method for manufacturing colored eyeglass frame parts (for example,
As shown in FIG. 5, a spectacle frame component (7) having a recess is prepared, and a large amount of resin paste (8) or glass (cloisonne) melt is poured into the recess (see Japanese Patent Publication No. 59-1195). Alternatively, when the resin or glass (cloisonne) is solidified or hardened by pushing or placing, the surface of the resin or glass (cloisonne) is ground and polished, and the surface is made common with the surface of the rim or temple. In this case, the reason why a large amount of resin or the like is poured into the recess is that the resin or the like contracts when it solidifies or cures, and the surface is recessed.

[0004]

In the conventional manufacturing method, it is difficult to mechanize the step of pouring resin or the like into the recess and the step of grinding and polishing to make the surface common to the surface of the rim and the temple. I was counting on. Therefore, there is a problem that the manufacturing cost is high.

[0005]

Therefore, according to the present invention, as shown in FIG. 1, an eyeglass frame component (7) having a concave portion (6) is prepared; A transfer sheet in which a pattern (3) is formed on a base material sheet (1) and a pressure-sensitive adhesive is laminated on the surface of the transfer pattern.
(5) is prepared; the transfer pattern (3) is pressed against the recess (6), and the transfer pattern (3) is pressed into the recess.
A method for producing a color-matching eyeglass frame part (7) having a color-casting (9), which comprises: pressure-bonding to the bottom of (6); and, after pressure-bonding, separating the substrate sheet from the transfer pattern. provide.

[0006]

In the present invention, the eyeglass frame parts refer to all parts such as the front, rim, bridge, blow, rim lock, temple and the like. The material of the component is preferably metal, but not limited to this, it may be resin, fiber reinforced resin, or gypsum. The recess is preferably flat. Transfer sheets are already known in other fields (JP-A-1-201000, JP-A-3-38360, JP-A-3-107187, etc.) and are easily available. The transfer sheet is generally composed of a base material sheet, a color-imprinted transfer pattern temporarily adhered thereon, a strong pressure-sensitive adhesive applied to the surface of the color-embedded transfer pattern, and a release sheet temporarily adhered thereon. The release sheet protects the pressure-sensitive adhesive from stickiness when the transfer sheet is carried, and is not essential. The release sheet can be easily removed by hand.

Generally, the adhesive force of the pressure-sensitive adhesive for adhering the color-imprinted transfer pattern and the adherend component (eyeglass frame component) is stronger than the adhesive force of the base sheet and the color-imprinted transfer pattern. Therefore, the pressure-sensitive transfer pattern can be easily peeled off from the color-transferred pattern after the color-transferred pattern is pressure-bonded to the adhered component, and the color-transferred pattern is not peeled off from the adhered component when peeling. After the base sheet is peeled off, the color-transfer pattern is described as color-transfer in this specification.

The color-transfer pattern is formed of resin, metal, cloisonne, glass, or the like. Not only resin, mere transparent resin, colorless transparent resin, and colored resin, but also light-reflecting powder or particles such as metal powder, pearl powder, mica powder, and gem particles may be contained. Examples of the metal include gold, platinum, silver, copper and aluminum. The metallic color transfer pattern is
It may be formed by an electroforming method. In order to form a pattern, a sheet-like material may be formed once and then patterned by punching, laser cutting, photolithography, or the like. Alternatively, there is also a method of directly producing a color-transfer pattern that is patterned by a screen printing method.

Hereinafter, the present invention will be described more specifically with reference to Examples with reference to FIGS. 1 to 3, but the present invention is not limited thereto.

[0010]

【Example】

(1) A metal (nickel-copper alloy) temple (6) having a depth of 0.5 mm, a length of 3 mm, and a width of 10 mm was opened in the vicinity of the front (7), and the whole was gold-plated. (2) On the other hand, a pressure-sensitive adhesive liquid having a weak adhesive force was applied onto the substrate sheet (1) and dried to form a weak pressure-sensitive adhesive layer (2).

After that, a thick amber colored epoxy resin paste containing mica powder was applied to a thickness of about 0.5 mm, and 60
The resin was cured by heating at 0 ° C. for 5 hours. The hardened resin is hard and has a dark amber color, and the mica powder (flake-like) reflects glitter and light, giving it a beautiful and high-class appearance. A pressure-sensitive adhesive liquid having a strong adhesive force was applied onto the cured resin layer and dried to form a strong pressure-sensitive adhesive layer (4). This adhesive is of a type that hardens and its adhesive strength increases a while after pressure bonding.

Then, with a punching die having a rectangular opening of 2.85 mm in length and 9.85 mm in width, the resin layer is punched out in a lattice form by hardening at intervals of 5 mm, and the resin layer between them is removed.
"Molding transfer pattern (3)" made of resin containing mica foil pieces
Was produced. The state seen from above is shown in FIG. Finally, by pressing the release sheet from above (temporarily bonding),
A transfer sheet (5) was obtained. (3) The release sheet (not shown) of the transfer sheet (5) is peeled off (easily peeled off) by hand, and the color transfer pattern (3) is made to face the concave portion (6) of the temple, and the color transfer pattern is formed. Push (3) into recess (6). This state is shown in Fig. 1 (2).
Is. Since there is a strong pressure-sensitive adhesive layer on the surface of the color transfer pattern (3), the transfer pattern (3) was pressure-bonded to the bottom of the recess. Then, when you pull the base sheet with your hand, the transfer pattern (3) is attached to the base sheet (1) with a weak pressure-sensitive adhesive, so you can easily use the base sheet (1) by hand.
Was peeled off from the transfer pattern (3). See FIG. At this time, since the transfer pattern (3) is pressure-bonded to the recess (6) with a strong pressure-sensitive adhesive, the transfer pattern (3) cannot be peeled off. Alternatively, without removing the base sheet (1) immediately,
The transfer pattern (3) may be sufficiently strongly adhered to the recess (6) and then peeled off.

Thus, an inlaid temple (glass frame component) was manufactured in which the color-filled transfer pattern, that is, the color-filled (9) made of resin containing mica foil pieces was color-filled in the recesses (6). Here, the transfer pattern is manually pushed into the concave portion, but it is easy to mechanize. This will reduce manufacturing costs. In general, the surface of the color insert is located at the same position as the surface of the component and does not protrude from the component, but in the present invention, it may protrude in some cases.

[0014]

As described above, according to the present invention, since the transfer sheet is used, the colored spectacle frame component can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a spectacle frame component during manufacturing (first half) according to an embodiment of the present invention. The adhesive is not shown.

FIG. 2 is a schematic cross-sectional view of a spectacle frame component during manufacturing (second half) according to the embodiment of the present invention. The adhesive is not shown.

FIG. 3 is a schematic sectional view of a transfer sheet.

FIG. 4 is a schematic top view of a transfer sheet. The pressure sensitive adhesive is not shown.

FIG. 5 is a schematic cross-sectional view of a spectacle frame component which is being manufactured according to a conventional technique.

[Explanation of symbols]

 1 ... Substrate sheet 6 ... Recessed portion 3 ... Colored transfer pattern 7 ... Eyeglass frame component 5 ... Transfer sheet 9 ... Colored

Claims (3)

[Claims] 1. A spectacle frame component having a recess is prepared; a color-transfer pattern having a shape that fits into the recess is formed on a substrate sheet, and a pressure-sensitive adhesive is laminated on the surface of the transfer pattern. Preparing a transfer sheet; pressing the transfer pattern against the recess and press-bonding the transfer pattern to the bottom of the recess; and pressing and separating the base sheet from the transfer pattern. Of manufacturing colored eyeglass frame parts. 2. The method according to claim 1, wherein the adhesive force of the pressure-sensitive adhesive is stronger than the adhesive force between the base sheet and the transfer pattern. 3. The method of claim 1, wherein the transfer pattern is resin, cloisonne or metal.