KR100967528B1

KR100967528B1 - Method for fabricating cellulose ester based spectacles frame

Info

Publication number: KR100967528B1
Application number: KR1020080027029A
Authority: KR
Inventors: 김태열
Original assignee: 김태열
Priority date: 2008-03-24
Filing date: 2008-03-24
Publication date: 2010-07-05
Also published as: KR20090101722A

Abstract

Provided is a method for producing a cellulose ester-based spectacle frame. First, a design layer directly contacting the spectacle frame body is formed on a cellulose ester-based spectacle frame body. The design layer is formed using a solution containing a solvent capable of dissolving cellulose esters. A coating layer is formed on the design layer. By forming a design layer directly contacting the spectacle frame body on the spectacle frame body, the manufacturing process may be simplified, and the design layer may implement a pattern and a color having a high quality.

Description

Method for manufacturing cellulose ester spectacle frame {Method for fabricating cellulose ester based spectacles frame}

The present invention relates to a spectacle frame and a method of manufacturing the same, and more particularly to a cellulose ester-based spectacle frame and a method of manufacturing the same.

To enhance the aesthetic appearance of the spectacle frame, various patterns and colors may be formed on the spectacle frame. As an example, in the case of a plastic frame, there is a method of implementing a color on the frame by mixing the pigment in the molten resin during the injection of the frame, or by laminating a laminated sheet formed by including the pigment by pressing with heat. However, this is limited to the implementation of various colors and patterns, and as the color of the color is added, the cost and process are complicated, so it is difficult to implement the patterns and colors perfectly.

In order to solve this problem, a design layer for forming patterns and colors may be additionally formed on the spectacle frame body, but a pretreatment process is required to seat the design layer on the spectacle frame body. For this reason, the process of manufacturing a spectacle frame may be complicated.

The problem to be solved by the present invention is to provide a spectacle frame and a method of manufacturing the same, while implementing a pattern and color having a high quality, the manufacturing process is simplified.

Technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

One aspect of the present invention to achieve the above object provides a spectacle frame. The spectacle frame includes a spectacle frame body made of a cellulose ester material, a design layer directly contacting the spectacle frame body on the spectacle frame body, and a coating layer positioned on the design layer.

The cellulose ester may be cellulose acetate, cellulose acetate butyrate, or cellulose acetate propionate. The design layer may include a printing layer implementing a pattern. Furthermore, the design layer may include a color layer that implements a background color on or below the printed layer.

One aspect of the present invention to achieve the above object provides a method of manufacturing a spectacle frame. First, a design layer directly contacting the spectacle frame body is formed on a cellulose ester-based spectacle frame body. A coating layer is formed on the design layer.

The design layer may be formed using a solution containing a solvent capable of dissolving cellulose ester. The design layer may include a printing layer implementing a pattern. Further, the design layer is the print layer, the print layer may be formed using a solution containing a solvent capable of dissolving cellulose ester. The design layer may include a color layer that implements a background color on or below the printed layer. Furthermore, the design layer may include a color layer and a printing layer laminated in sequence, and the color layer may be formed using a solution containing a solvent capable of dissolving cellulose ester. The printing layer may be formed by spraying ink through a nozzle using a flatbed printer.

According to the invention as described above, by forming a design layer in direct contact with the spectacle frame body on the spectacle frame body, not only can simplify the manufacturing process, the design layer can implement a pattern and color having a high quality.

In addition, it is possible to reduce the manufacturing cost by at least the work process, it is possible to make a product excellent in durability, impact resistance, adhesion by reducing the paint layer.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to describe the present invention in more detail. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. In the figures, where a layer is said to be "on" another layer or substrate, it may be formed directly on the other layer or substrate, or a third layer may be interposed therebetween.

First Example

1 is a cross-sectional view showing a spectacle frame according to a first embodiment of the present invention.

Referring to FIG. 1, a spectacle frame body 10 made of a cellulose ester-based material is provided. Eyeglass frames made of cellulose ester-based materials are excellent in adaptability to skin, elasticity and nonflammability. The cellulose ester system may be cellulose acetate, cellulose acetate butyrate, or cellulose acetate propionate. The cellulose acetate may contain an acetyl group 32 to 40% by weight, acetic acid 44 to 56% by weight, and hydroxyl group 3.5 to 9% by weight. The cellulose acetate butyrate may contain 2 to 29.5 weight ratio of acetyl group, 17 to 51 weight ratio of butyryl group, and 0.8 to 5 weight ratio of hydroxyl group. The cellulose acetate propinate may contain 0.1 to 5 parts by weight of acetyl group and 30 to 60 parts by weight of pyridinonyl group.

On the spectacle frame body 10 is located a design layer directly in contact with the spectacle frame body 10. The design layer may be a printed layer 15. The printed layer 15 is a layer for forming a pattern, that is, a picture or text. The coating layer 19 is positioned on the printed layer 15. The coating layer 19 may be a protective layer that prevents the print layer 15 from being damaged due to discoloration or external impact.

2 is a flowchart illustrating a method of manufacturing a spectacle frame according to a first embodiment of the present invention.

1 and 2, the spectacle frame body 10 made of a cellulose ester-based material is molded (S100). Molding the eyeglass frame body 10 may be performed using a method of injection molding or pressing a laminated sheet. Such cellulose ester systems can be cellulose acetate, cellulose acetate butyrate or cellulose acetate propinate. The cellulose acetate may contain 32 to 40 weight ratio of acetyl group, 44 to 56 weight ratio of acetic acid, and 3.5 to 9 weight ratio of hydroxyl group. The cellulose acetate butyrate may contain 2 to 29.5 weight ratio of acetyl group, 17 to 51 weight ratio of butyryl group, and 0.8 to 5 weight ratio of hydroxyl group. The cellulose acetate propinate may contain 0.1 to 5 parts by weight of acetyl group and 30 to 60 parts by weight of pyridinonyl group.

The molded eyeglass frame body 10 may be polished (S110). As a result, the surface uniformity of the spectacle frame body 10 may be improved. Thereafter, the polished spectacle frame main body 10 may be cleaned (S120) to remove foreign substances, etc. from the spectacle frame main body 10.

The cleaned eyeglass frame body 10 is mounted on a jig.

A design layer, for example, a print layer 15 is formed on the spectacle frame body 10 (S130). The printed layer 15 is a layer for forming a pattern, that is, a picture or text. The print layer 15 may be directly printed on the surface of the spectacle frame body 10 using a flatbed printer. In this case, the ink may be sprayed by the nozzle of the printer, and may be a solvent type ink in which a dye and a solvent are mixed. The pigment may be a dye, pigment or metal powder. The solvent may be a solvent capable of melting the spectacle frame body 10, that is, a cellulose ester-based material. Specifically, the solvent may be ketones, esters, glycol ethers, glycol ether esters, alcohols, halogenated hydrocarbons, ethers, hydrocarbons alone or a combination of these solvents.

The ketones are methyl acetone, methyl ethyl ketone, methyl-n-propyl ketone, methyl-n-butyl ketone, methyl isobutyl ketone, methyl-n-amyl ketone, methyl-n-hexyl ketone, diethyl ketone, ethyl-n -Butyl ketone, di-n-propyl ketone, diisobutyl ketone, 2,6,8-trimethylnonanone-4, acetone oil, acetonyl acetone, diacetone alcohol, mesityl oxide, poron, isophorone, cyclohexane On, methylcyclohexanone, acetophenone, or difnon. As an example, the ketones may be methyl ethyl ketone.

The esters may be propyl acetate or isopropyl acetate. The glycol ethers may be propylene glycol methyl ether (PM).

The alcohols include methanol, ethanol, propanol, isopropanol, butanol, isobutanol, second butanol, third butanol, amyl alcohol, activated amyl alcohol, second amyl alcohol, 3-pentanol, third amyl alcohol and fugel oil ( fusel oils), hexanol, methylamyl alcohol, 2-ethylbutanol, heptanol, 2-heptanol, 3-heptanol, octanol, 2-octanol, 2-ethylhexanol, trimethylhexanol, nonanol, Decanol, undecanol, dodecanol, trimethylnonyl alcohol, tetradecanol, heptadecanol, cyclohexanol, methylcyclohexanol, benzyl alcohol, glycidol, furfuryl alcohol, tetrahydrofurfuryl alcohol, terpineol Or biethyl alcohol. Specifically, the alcohol may be ethanol.

The halogenated hydrocarbon is methyl chloride, methylene chloride, chloroform, carbon tetrachloride, ethyl chloride, ethylene chloride, ethylidene chloride, 1,1,1-trichloroethane, 1,1,2-trichloroethane, 1,1,1 , 2-tetrachloroethane, 1,1,2,2-tetrachloroethane, pentachloroethane, hexachloroethane, vinylidene chloride, 1,2-dichloroethylene, trichloroethylene, tetrachloroethylene, 1,2 3-trichloropropane, isopropyl chloride, allyl chloride, 1,2-dichloropropane, butyl chloride, amyl chloride, diethyl chloride, dichloropentane, hexyl chloride, 2-ethylhexyl chloride, methyl bromide, ethyl bromide, Ethylene bromide, tetrabromethane, chlorobromethane, ethylenechlorobromide, chlorobenzene, dichlorobenzene, trichlorobenzene, brominebenzene, dibrombenzene, o-chlorotoluene, p-chlorotoluene, chloronaphthalin, chlorinated naph Tallinn, Fluordichloromethane, Dichlorodifluoro Burnt, it can be a fluorine-trichloro methane, difluoro-tetrachloroethane, 1,1,2-or 1,2,2-trifluoro ethane chlor tree. Specifically, the halogenated hydrocarbon may be methyl chloride.

The ethers are ethyl ether, dichloroethyl ether, isopropyl ether, butyl ether, diisoamyl ether, hexyl ether, methylphenyl ether, ethylphenyl ether, butylphenyl ether, amylphenyl ether, cresylmethyl ether, and third amyl Phenyl-n-amyl ether, ethylbenzene ether, propylene oxide, epichlorohydrin, diglycidyl ether, dioxane, trioxane, furan, furfural, methylfuran, tetrahydrofuran, tetrahydropyran, cineol , Methylal, acetal or diethylacetal.

The hydrocarbons are propane, n-butane, n-pentane, n-hexane, isohexane, n-heptane, n-octane, isooctane, n-decane, 2,2-dimethylbutane, petroleum ether, petroleum benzine, ligroin, Gasoline, Keshiron, Petroleum Spirit, Petroleum Naphtha, Ethylene, 2-Pentene, Mixed Pentene, Cyclohexane, Methylcyclohexane, Benzene, Toluene, Xylene, Ethylbenzene, Diethylbenzene, Isopropylbenzene, Amylbenzene, Dia Millbenzene, triamylbenzene, tetraimylbenzene, dodecylbenzene, didodecylbenzene, amyltoluene, coultarnaphtha, solvent naphtha, p-cymene, naphthalin, tetralin, decalin, biphenyl, dipentene, terevin oil , Pinene, p-mentane, or pine oil.

As described above, the printing layer 15 is directly printed on the spectacle frame main body 10 using ink containing a solvent capable of melting the spectacle frame main body 10, so that the pattern formed by the ink and the spectacle frame main body ( 10) can significantly improve the adhesion between. Therefore, it may be omitted to form an additional adhesive auxiliary layer between the design layer, that is, the printing layer 15 and the spectacle frame body 10. The flatbed printer can be any model using the Piezo method of directly injecting ink.

Before printing the printed layer 15 using a flatbed printer, the pattern implemented through the printed layer 15, i.e., a picture, text, design or photograph, may be selected as required by the customer and may also Can be edited by Therefore, the spectacle frame which fully reflects the preference of the customer can be manufactured.

The coating layer 19 may be formed on the printed layer 15. The coating layer 19 serves as a protective layer to prevent discoloration or damage due to external impact of the printing layer 15, and may be formed as a transparent layer without a pigment or a translucent layer with a small amount of pigment. The coating layer 19 is a cellulose ester-based paint, such as glasses material, lacquer paint, epoxy paint, acrylic urethane paint, acrylic paint, urethane paint and UV-curable paint selected from any one of the paints Can be formed. The paints may be used a one-component paint, a two-component paint, or a dry paint. The one-component paint is a paint having only a paint to form a layer and then the layer is completed by drying, the two-component paint is a paint to form a three-dimensional molecular structure by the action of the curing agent by mixing the paint and the curing agent, A dry paint is similar to a one-component paint, but it is a paint that is dried when the solvent is volatilized in a state dissolved in the solvent.

The coating layer 19 may be formed using a spray coating method. In other words, the coating layer 19 is formed by spraying a mixed solution of a coating material and an organic solvent on the printing layer 15. In order to form the coating layer 19 as a translucent layer, a mixed solution of a paint, a pigment, and an organic solvent may be used.

When the coating layer 19 is formed, a drying process is performed (S150). In some cases, before the coating layer 19 is formed, an additional buffer layer (not shown) may be formed on the print layer 15 to prevent spreading of the pattern of the print layer 15.

After that, if necessary, the eyeglass frame body having the coating layer 19 formed thereon may be polished (S160). As a result, the surface of the spectacle frame and the foreign matter can be removed, and the brightness can be adjusted. Specifically, foreign substances or brightness on the surface can be adjusted by simultaneously inserting chips, wax or oil, and abrasive into the polishing container, or by applying polishing wax or oil to the surface by rotating the polishing cloth on the polishing wheel to remove foreign substances and impart brightness. I can do it.

2nd Example

3 is a cross-sectional view showing a spectacle frame according to a second embodiment of the present invention.

Referring to FIG. 3, design layers directly contacting the spectacle frame body 20 are disposed on upper and lower surfaces of the spectacle frame body 20 made of cellulose ester. The design layers may be printed layers 25a and 25b. Coating layers 29a and 29b are positioned on the print layers 25a and 25b.

4 is a flowchart illustrating a method of manufacturing a spectacle frame according to a second embodiment of the present invention. For a detailed description of each step of the spectacle frame manufacturing method according to this embodiment can refer to the embodiment described with reference to FIG.

3 and 4, the spectacle frame body 20 made of a cellulose ester-based material is molded (S200). The cellulose ester system may be cellulose acetate, cellulose acetate butyrate or cellulose acetate propinate.

The molded eyeglass frame body 20 may be polished (S210). As a result, the surface uniformity of the spectacle frame body 20 can be improved. Thereafter, the polished spectacle frame main body 20 may be cleaned (S220) to remove foreign substances, etc. from the spectacle frame main body 20.

The cleaned eyeglass frame body 20 is mounted on a jig.

Design layers, for example, printing layers 25a and 25b, are directly formed on upper and lower surfaces of the spectacle frame body 20 (S230). The printed layers 25a and 25b are layers for forming a pattern. The print layers 25a and 25b may be directly printed on the surface of the spectacle frame body 20 using a flatbed printer. Specifically, after printing on any one of the upper and lower surfaces of the eyeglass frame body 20, it can be printed on the other surface. In this case, the ink may be sprayed by the nozzle of the printer, and may be a solvent type ink in which a dye and a solvent are mixed. In addition, the solvent may be a solvent capable of melting the spectacle frame body 20, that is, a cellulose ester-based material. As such, by printing the print layers 25a and 25b directly on the spectacle frame body 20 using an ink containing a solvent capable of melting the spectacle frame body 20, the pattern formed by the ink and the The adhesion between the spectacle frames main body 20 can be remarkably improved.

Coating layers 29a and 29b may be formed on the printed layers 25a and 25b. The coating layers 29a and 29b serve as a protective layer to prevent the discoloration of the printed layers 25a and 25b or damage due to external impact. The coating layers 29a and 29b may be any one selected from cellulose ester-based paints such as eyeglass materials, lacquer paints, dry paints, epoxy paints, acrylic urethane paints, acrylic paints, urethane paints, and UV curing paints. It can be formed using. The coating layers 29a and 29b may be formed using a spray coating method.

When the coating layers 29a and 29b are formed, a drying process is performed (S250). In some cases, before forming the coating layers 29a and 29b, buffer layers (not shown) may be additionally formed on the print layers 25a and 25b to form the print layers 25a and 25b. The spread of the pattern can be prevented. After that, if necessary, the eyeglass frame body having the coating layer 19 formed thereon may be polished (S260).

The third Example

5 is a cross-sectional view showing a spectacle frame according to a third embodiment of the present invention.

Referring to FIG. 5, a spectacle frame body 30 made of a cellulose ester-based material is provided. The cellulose ester system may be cellulose acetate, cellulose acetate butyrate or cellulose acetate propinate.

On the spectacle frame body 30 is located a design layer directly in contact with the spectacle frame body 30. The design layer may be first color layers 33a and 33b, printed layers 35a and 35b, and second color layers 37a and 37b that are sequentially stacked on upper and lower surfaces of the frame frame body 30. have. However, the present invention is not limited thereto, and the design layer may be formed only on the upper surface or the lower surface of the spectacle frame body 30, and the first color layers 33a and 33b or the second color layers 37a and 37b. May be omitted, and in some cases, additional printing layers and color layers may be further formed. The upper surface may be an outer surface of the spectacle frame, and the lower surface may be an inner surface of the spectacle frame. The color layers 33a, 33b, 37a, and 37b may be layers representing a background color of the printed layers 35a and 35b.

Coating layers 39a and 39b are positioned on the design layer. When the design layer includes all of the first color layers 33a and 33b, the print layers 35a and 35b, and the second color layers 37a and 37b, the coating layers 39a and 39b The second color layers 37a and 37b may be respectively positioned on the second color layers 37a and 37b.

6 is a flowchart illustrating a method of manufacturing a spectacle frame according to a third embodiment of the present invention. For a detailed description of each step of the spectacle frame manufacturing method according to this embodiment can refer to the embodiment described with reference to FIG.

5 and 6, the spectacle frame body 30 made of a cellulose ester-based material is molded (S300). The cellulose ester system may be cellulose acetate, cellulose acetate butyrate or cellulose acetate propinate.

The molded eyeglass frame body 30 may be polished (S310). As a result, the surface uniformity of the spectacle frame body 30 may be improved. Thereafter, the polished spectacle frame main body 30 may be cleaned (S320) to remove foreign substances, etc. from the spectacle frame main body 30.

The cleaned eyeglass frame body 30 is mounted on a jig. Design layers, for example, the first color layers 33a and 33b, the print layers 35a and 35b and the second color layers 37a and 37b are directly disposed on the upper and lower surfaces of the spectacle frame body 30. It is formed in sequence (S325, S330, S335).

The first color layers 33a and 33b may be formed by mixing a paint with a solvent such as a thinner or an organic solvent to form a solution ink, and then spray coating, screen printing, or pad printing the solution ink. . Spray coating may be used to form the first color layers 33a and 33b as a whole, and screen or pad printing may be used to partially form the first color layers 33a and 33b.

The solvent used to form the first color layers 33a and 33b is a solvent capable of melting the spectacle frame body 30, that is, a cellulose ester-based material, and may be a volatile solvent. Specifically, the solvent may be ketones, esters, glycol ethers, glycol ether esters, alcohols, halogenated hydrocarbons, ethers, hydrocarbons alone or a combination of these solvents. As such, the first color layer is directly printed on the spectacle frame body 30 by printing the first color layers 33a and 33b on the spectacle frame body 30 using ink containing a solvent capable of melting the spectacle frame body 30. The adhesion between the fields 33a and 33b and the spectacle frame body 30 can be significantly improved. Therefore, an additional adhesive auxiliary layer may be omitted between the design layers, that is, the first color layers 33a and 33b and the spectacle frame body 30.

The paint for forming the first color layers 33a and 33b may be a cellulose ester-based paint such as the spectacle material, a lacquer paint as a dry paint, an epoxy paint, a urethane paint, an acrylic urethane paint, an acrylic paint, and It can form using any paint chosen from UV hardening paint. When the paint for forming the first color layers 33a and 33b is a cellulose ester-based paint such as the material of the spectacle frame body 30, the first color layers 33a and 33b and the The adhesion between the spectacle frame body 30 may be further improved. In addition, the first color layers 33a and 33b may include a pigment. The paints may be used a one-component paint, a two-component paint or a dry paint. The one-component paint is a paint having only a paint to form a layer and then the layer is completed by drying, the two-component paint is a paint to form a three-dimensional molecular structure by the action of the curing agent by mixing the paint and the curing agent, A dry paint is similar to a one-component paint, but it is a paint that is dried when the solvent is volatilized in a state dissolved in the solvent.

The printed layers 35a and 35b are layers for forming a pattern. The print layers 35a and 35b may be printed using a flatbed printer. In this case, the ink may be sprayed by the nozzle of the printer, and may be a solvent type ink in which a dye and a solvent are mixed. When forming the print layers 35a and 35b, the first color layers 33a and 33b are preferably maintained before drying, before curing or semi-cured to prevent spreading and agglomeration of ink. Do. In addition, when the first color layers 33a and 33b are cellulose ester-based paints, the solvent for forming the print layers 35a and 35b may be a solvent capable of dissolving a cellulose ester-based material. have. In this case, adhesion between the printed layers 35a and 35b and the first color layers 33a and 33b may be significantly improved. However, the present invention is not limited thereto, and an additional contact auxiliary layer may be formed between the printed layers 35a and 35b and the first color layers 33a and 33b.

The second color layers 37a and 37b may be formed by mixing a paint with a solvent such as thinner or an organic solvent to form a solution ink, and then spraying, screen printing, or pad printing the solution ink. . The paint for forming the second color layers 37a and 37b may be a cellulose ester-based paint such as the spectacle material, a lacquer paint as a dry paint, an epoxy paint, a urethane paint, an acrylic urethane paint, an acrylic paint, and It can form using any paint chosen from UV hardening paint. In addition, the formulation 2 color layers 37a and 37b may include a pigment. The paints may be used a one-component paint, a two-component paint or a dry paint. Spray coating may be used to form the second color layers 37a and 37b as a whole, and screen or pad printing may be used to partially form the second color layers 37a and 37b.

Coating layers 39a and 39b may be formed on the design layers (S340). The coating layers 39a and 39b serve as a protective layer to prevent discoloration of the printed layers 35a and 35b or damage caused by external impact. The coating layers 39a and 39b may be any one selected from cellulose ester-based paints such as eyeglass materials, lacquer paints, dry paints, epoxy paints, acrylic urethane paints, acrylic paints, urethane paints, and UV curing paints. It can be formed using. The coating layers 39a and 39b may be formed using a spray coating method.

When the coating layers 39a and 39b are formed, a drying process is performed (S350). Thereafter, if necessary, the eyeglass frame body having the coating layers 39a and 39b formed thereon may be polished (S360).

Hereinafter, preferred examples are provided to aid in understanding the present invention. However, the following experimental examples are only for helping understanding of the present invention, and the present invention is not limited to the following experimental examples.

Experimental Examples; examples>

Base specimens made of cellulose acetate were injection molded using Eastman CA-398-3 (Eastman Chemical, Inc.) consisting of 39.8 weight ratios of acetyl group, 55.5 weight ratios of acetic acid, and 3.5 weight ratios of hydroxyl group. The specimen may be 10 mm wide, 140 mm long and 3 mm thick. The printing layer was printed on the specimen using a solvent-based ink and an Epson printer containing 60% by weight of methyl ethyl ketone, 30% by weight of isopropyl acetate, and 10% by weight of a dye. The printed layers are line patterns having a width of 0.1 mm. Using the cellulose ester-based paint and spray coating method to form a coating layer on the printed layer to complete the specimen preparation.

The same method as in Preparation Example 1 was used except that the printing layer was printed using a solvent-based ink containing 60% by weight of propyl acetate, 30% by weight of PM (Eastman), and 10% by weight of the dye. To complete the specimen preparation.

The same method as in Preparation Example 1 was used except that the printing layer was printed using a solvent type ink containing 60% by weight of ethanol (Ethyl alcohol), 30% by weight of methyl chloride, and 10% by weight of a dye. To complete the specimen preparation.

&Lt; Preparation Example 4 &

Specimens made of cellulose acetate butyrate were injection molded using Eastman CAB-321-0.1 (Eastman Chemical Co., Ltd.) composed of 17.5 weight ratio of acetyl group, 32.5 weight ratio of butyryl group, and 1.3 weight ratio of hydroxyl group. The specimen may be 10 mm wide, 140 mm long and 3 mm thick. The printed layer was printed on the specimen using a solvent-based ink and an Epson printer containing 60% by weight methylethyl ketone, 30% by weight isopropyl acetate, and 10% by weight pigment. The printed layers are line patterns having a width of 0.1 mm. Using the cellulose ester-based paint and spray coating method to form a coating layer on the printed layer to complete the specimen preparation.

Production Example 5

The same method as in Preparation Example 4 was used except that the printing layer was printed using a solvent-based ink containing 60% by weight of propyl acetate, 30% by weight of PM (Eastman), and 10% by weight of the dye. To complete the specimen preparation.

The same method as in Preparation Example 4 was used except that the printing layer was printed using a solvent type ink containing 60% by weight of ethanol (Ethyl alcohol), 30% by weight of methyl chloride, and 10% by weight of a dye. To complete the specimen preparation.

Specimens made of cellulose acetate propinate were injection molded using Eastman CAP-504-0.2 (Eastman Chemical Co., Ltd.) consisting of 0.6 weight ratio of acetyl group, 42.5 weight ratio of propynyl group, and 5 weight ratio of hydroxyl group. The printed layer was printed on the specimen using a solvent-based ink and an Epson printer containing 60% by weight methylethyl ketone, 30% by weight isopropyl acetate, and 10% by weight pigment. The printed layers are line patterns having a width of 0.1 mm. Using the cellulose ester-based paint and spray coating method to form a coating layer on the printed layer to complete the specimen preparation.

The same method as in Preparation Example 7 was used except that the printing layer was printed using a solvent-based ink containing 60% by weight of propyl acetate, 30% by weight of PM (Eastman), and 10% by weight of the dye. To complete the specimen preparation.

The same method as in Preparation Example 7 was used except that the printing layer was printed using a solvent-based ink containing 60% by weight of ethanol, 30% by weight of methyl chloride, and 10% by weight of a dye. To complete the specimen preparation.

The color spread of the specimens of Preparation Examples 1 to 9 was observed and summarized in Table 1 below.

Adhesion Experiment Example

After making X-shaped sheaths at intervals of 1 mm on the specimens of Preparation Examples 1 to 9, the number of coatings was dropped by attaching and dropping cellophane tape, and summarized in Table 1 below. As a result, the degree of adhesion between the printed layer and the specimen body could be observed.

The flexural properties were observed while bending the specimens of Preparation Examples 1 to 9 at right angles, and are summarized in Table 1 below.

Preparation Example # One 2 3 4 5 6 7 8 9 Base Specimen Components Cellulose acetate Cellulose acetate
Butyrate Cellulose acetate
Propinate Printed layer components Ink 1 Ink 2 Ink 3 Ink 1 Ink 2 Ink 3 Ink 1 Ink 2 Ink 3 Pigmentation ◎ △ △ ○ ◎ ◎ ○ ◎ ◎ Adhesion ○ △ △ ○ ◎ ○ △ ◎ ◎ Flexibility ○ △ △ ○ ◎ ◎ ◎ ◎ ◎ Remarks Ink 1: 60% by weight methyl ethyl ketone + 30% by weight isopropyl acetate + 10% by weight pigment
Ink 2: 60% by weight propyl acetate + 30% by weight PM (Eastman) + 10% by weight pigment
Ink 3: 60% ethanol + 30% methyl chloride + 10% pigment

Referring to Table 1, the cellulose acetate of the cellulose ester is the most severe change in physical properties by the type of ink forming the printing layer, the remaining two kinds of cellulose acetate butyrate and cellulose acetate prop Nate showed almost similar physical properties. Referring to these results, unlike plastics such as nylon and polycarbonate in the plastic frame, the cellulose ester-based material may form a printing layer directly on the frame of the glasses, and adhesion between the printing layer and the frame of the glasses Can be significantly improved. In addition, a uniform design and picture can be accurately positioned at the desired position.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

4 is a flowchart illustrating a method of manufacturing a spectacle frame according to a second embodiment of the present invention.

6 is a flowchart illustrating a method of manufacturing a spectacle frame according to a third embodiment of the present invention.

Claims

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Forming a design layer on the cellulose ester-based spectacle frame body directly contacting the spectacle frame body using a solution containing a solvent capable of dissolving cellulose ester; And

Eyeglass frame manufacturing method comprising the step of forming a coating layer on the design layer.

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The method of claim 5,

The design layer is a spectacle frame manufacturing method comprising a printing layer for implementing a pattern.

The method of claim 7, wherein

The design layer is the printed layer,

The printing layer is a spectacle frame manufacturing method using a solution containing a solvent capable of dissolving cellulose ester.

The method of claim 7, wherein

The design layer is a spectacle frame manufacturing method having a color layer to implement a background color on the upper or lower portion of the printing layer.

10. The method of claim 9,

The design layer has a color layer and a printed layer laminated in sequence,

The color layer is a spectacle frame manufacturing method using a solution containing a solvent capable of dissolving cellulose ester.

The method of claim 7, wherein

The printing layer is a spectacle frame manufacturing method formed by spraying ink through a nozzle using a flatbed printer.