JPS59146756A - Surface treatment of metal frame - Google Patents

Abstract

PURPOSE:To permit to present a fine line pattern precisely by a method wherein a line pattern masking is applied on the surface of the metal frame of a galss, which is finished so as to be glittering, by a photosetting resin and satinizing treatment is applied by sandblasting or the like to remove the masking. CONSTITUTION:The metal frame of sun-plutinum or the like is finished so as to be glittering and the line pattern masking is applied on the surface thereof by the photo-setting resin cured by light projection remaining viscoelastic properties. This masking is cured by light beams after describing fine lines by a drawing pen or cured into the fine line pattern by coating the photo-setting resin on the whole surface thereof and projecting the figure of desired streaking pattern, thereafter, the fine line pattern is formed by removing non-setting parts by resolving or the like. Subsequently the satinizing treatment is applied to non-masking part by the sandblasting, thereafter, the masking film is removed by an organic solvent such as trichloroethyleneor the like. Thus, fine and beautiful fine line pattern may be presented precisely and efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for surface treatment of a metal frame for eyeglasses, and more specifically, to a method for treating the surface of a metal frame in eyeglasses, and more specifically, to create a beautiful and contrasting line pattern in which a satin finish part and a shiny finish part run together on the surface of a metal full frame. The present invention relates to a surface treatment method that can be applied to the surface treatment.

Conventionally - When creating a bright finish line pattern on the satin-polished surface of a metal frame, a method was used in which tape masking was applied to the required areas of the bright-finished metal frame and the frame was subjected to the satin finish. The imitation plum shape therein can only be formed in a simple manner, and in particular, the fine line pattern cannot be expressed (there was one point...). This is because the tape is extremely sandwiched, so it was practically impossible to cut the cicada masking tape with its elaborate fine line pattern.

, 'The present inventor has added i% to the tape masking method,
As a result of various researches to develop a thin line and masking patterns on the hexagonal crystals, we found that the light i.
Unlike other 4ftJ oil coatings, the coating that forms the masking surface has a satin finish (υ) that is hardened during polishing. Also, when forming the masking surface, UV light can be irradiated to harden the coating film.
However, the baking process does not cause any damage to the finished metal surface.

Moreover, the crotch Q, which has appropriate physical properties as a masking surface, =
After discovering that it is the easiest to cure, we completed the present invention.

That is, 1 the present invention is a photo-curing method 1 that leaves a viscous property U7 on the surface of the metal frame with the bright part -i= by irradiating it with light.
11. Use resin to mask the prescribed line pattern.
ii After Lk, use this as Sun 1-Blasting etc.
Kokichi is characterized by applying satin finish treatment (=t +, , then removing the masking to create a linear pattern ':1 ntruss' on the surface of the metal frame with pear pond parts and bright parts) in one step. The object of the present invention is to provide a method for surface treatment of a metal frame.

Therefore, the present invention will be explained in more detail.

゛The metal frame to which the present invention applies.

In general, all metal materials conventionally used for metal frame eyeglasses can be used, such as nickel silver, Zamplatinum, stainless steel, and titanium alloys.

In photocurable resin binding, the masking coating film cured by light irradiation must be selected so that it will not peel off or be damaged by the subsequent satin finish treatment such as Zantoplasting. be. As a material having such physical properties, Three Bond Co., Ltd.'s 3000 N-Lease and Special Q 3013 can be said to be effective.

9. For example, [t',; [1c
Draw a thin line with a 0.6 sm trowel and irradiate it with light to harden it.

It is possible to form a masking pattern to form the desired pattern, but 1. ! + Grease is applied to the entire surface and irradiated with UV rays in the form of a beam, or an image of the desired line pattern is irradiated through a film to form hardened areas at the target areas, and non-hardened areas are removed by elution, etc. Of course, it is also possible to form a desired masking pattern using the same method.

The satin finishing may be done by the conventional sandblasting method.9 Usually, 4 to 5.5
The method of Sand Plus 1 treatment is carried out by blowing at a pressure of kg/crA.

Removal of the masking may be performed by elution using an organic solvent such as 1 to 1 to 1 to 20%, or 200% setone. This makes it much easier to remove masking particles that can damage the metal frame substrate. After elution, washing is usually performed as a final step.

Two embodiments of the present invention will be described in detail below.

〔Example〕

A light-curing resin (manufactured by Three Pond Co., Ltd.: product number 3013) having primary physical properties is applied to the frame parts manufactured using nickel silver (STP manufactured by Jumen Metals) and polished using a toriguchi. , I drew a thin horizontal line in Gvan.

“Physical properties of photocurable resin” Appearance Light brown transparent liquid Viscosity (25°C) cps' 6000 Specific gravity (25°C) Lot Non-volatile content (
99 or more Tensile adhesive strength (kg/ca Nigaras/Iron) 80-120 Tensile strength 0.7-0.9 Hardness (25'C)
90~95 (Nyoar A) Volume resistivity (Ω・c+n) 2,1 xiQ13 Surface resistivity (
Ω) 1.2 XIO' Dielectric constant (5011Z) 6.26taJT
δ(50tlZ) 0.036 Elongation rate (%)
120 Coefficient of thermal expansion (cm/'C) 4.2 x 10 Main features Soft and good impact resistance 40
Using an ultraviolet irradiation device with a lamp input of 0°, the ultraviolet rays are irradiated for 3 to 5 minutes at a position 10 to 20 cm from the light source to harden and form a cured film having rubber-like viscoelasticity. Using 300# glass heat, repeat 4 to 5 steps.
1st, with an output of 5 kg/c+4: Due to the Nizan 1 blasting process, the masking l odor was not damaged, and faithful contact areas were applied to the bright surfaces other than the masking surface.Therefore, This is dipped in the solvent L-Reclean to elute the masking crotch, and when it is extracted from the solvent and washed, the contrast is L1 due to the difference in reflection characteristics in the pear-shaped part and the bright part, and it is surprisingly detailed and beautiful. A fine line pattern was exposed.

According to one aspect of the present invention, as is clear from the above description.

Since delicate and beautiful fine line patterns can be accurately and efficiently drawn on the surface of thin and narrow eyeglass frames, the decorativeness of eyeglass frames, which are becoming increasingly fashionable, can be further improved. 2. The present invention is not to be construed as being limited to the above-mentioned embodiments; surface treatment is performed using a masking method using a photocurable resin in narrow areas such as eyeglass frames where it is difficult to expose fine line patterns. It can be widely adopted in various cases.

Patent applicant Mitani Obtical Co., Ltd. Patent attorney Koni Toyo

Claims (1)

[Claims] After applying masking in a predetermined line pattern on the brightly finished metal frame surface using a photocurable resin that hardens while leaving a viscoelastic property when exposed to light or irradiation. The metal is subjected to a satin finish treatment by sandblasting or the like, and then the masking is removed to create a line pattern-like contrast between the pear pond part and the bright part on the metal frame surface. Frame surface treatment method.