JP3130201B2 - Eyeglass frame and method for manufacturing eyeglass frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle frame and a method of manufacturing the spectacle frame, and more particularly to a spectacle frame suitable for preventing the attachment of dirt and small scratches to a new spectacle frame main body displayed at a store. It relates to a manufacturing method.

[0002]

2. Description of the Related Art Conventionally, an eyeglass frame manufactured in a factory is packed in a plastic bag or a box-shaped case for the purpose of preventing dirt and scratches. However, after that, all of these packaging materials are removed and displayed at the time of display at the store so as not to impair the beauty of the product. The visitor actually picks up the multiple display eyeglass frames arranged in the store, looks at it, even wears it, checks the design, feeling of wearing, etc. You will have to buy eyeglass frames. As described above, when purchasing the eyeglass frame, it is general that the purchaser purchases not the stock item but the actual item displayed.

[0003]

The eyeglass frames for display arranged in the store can be freely picked up by the visitor and can be viewed or disguised, so that small scratches may occur in some cases. Or, dirt such as sweat or cosmetics may adhere.

[0004] If a visitor desires to purchase a certain eyeglass frame after disguise, the purchaser will purchase the actual item on display instead of the stock item. Therefore, small scratches caused by the display have reduced the commercial value of the eyeglass frame. Further, the spectacle frame may have been worn by an unspecified number of people, and therefore some purchasers complained of hygiene discomfort.

[0005] The present invention has been made in view of the above points, and to prevent small scratches during display from deteriorating the commercial value, and to provide a wearer with hygiene discomfort when purchasing eyeglass frames. It is an object of the present invention to provide a spectacle frame capable of preventing an eyeglass from being damaged.

Another object of the present invention is to prevent a small scratch during display from deteriorating the commercial value and to prevent a wearer from feeling hygienic when purchasing eyeglass frames. It is to provide a possible method of manufacturing an eyeglass frame.

[0007]

According to the present invention, in order to solve the above-mentioned problems, at least a temple portion and a pad portion of a spectacle frame in a state in which final processing has been performed, have non-materials for the temple portion and the pad portion. An eyeglass frame provided with a transparent protective coating having affinity and releasability is provided.

[0008]

According to the above-mentioned means, adhesion of small scratches and dirt that may occur during display and during handling in disguise is completely prevented by the protective coating. Since the protective coating is transparent, it does not impair the aesthetics of the product due to the coating, and has a non-affinity and releasability with the material of the parts that make up the eyeglass frame, so the protective coating was formed As a result, the material is not deteriorated, and the protective coating can be easily removed and removed when necessary.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an embodiment of an eyeglass frame according to the present invention. In the spectacle frame according to the present invention, a protective coating is formed on the entire spectacle frame, or on a portion which comes into direct contact with the wearer's skin when worn. The places where the protective coating is partially formed are mainly, for example, the temple part 1, the temple modern part 2, and the pad part 3 of the spectacle frame. A protective coating 4 is formed. This protective coating 4
It is worn while the spectacle frame is displayed at the store for display, and is peeled off when the purchase is finally decided.

[0010] The protective coating 4 must satisfy the following requirements. That is, first, the protective coating 4
Is composed of a substrate component having no affinity with the material of the parts constituting the spectacle frame. Thereby, the material of the parts constituting the spectacle frame is not deteriorated.

Second, the protective coating 4 has good releasability from the material of the parts constituting the spectacle frame. That is, it is necessary that the protective coating 4 be easily and completely removed at the time when the purchaser finally decides to purchase. The adhesion strength with the material of the parts to be formed is increased, and the parts cannot be easily separated.

Third, the protective coating 4 is preferably transparent and preferably colorless so as not to impair the beauty of the product. Further, as the protective coating 4, in order to maintain a feeling of cleanliness, a material that is difficult to adhere to even when touched or temporarily worn is preferable, and has a surface property that causes discomfort during temporary wearing, It is desirable to avoid materials that feel uncomfortable.

Materials for the spectacle frame include metals such as copper alloy, titanium and stainless steel, thermoplastic resins such as acetylcellulose resins, propionylcellulose resins, polyamide resins and polyester resins, and thermosetting resins such as epoxy resins. Resin, acrylic, polycarbonate,
Urethane, and further, silicone rubber and the like are used. Therefore, it is necessary to select an optimum material according to the material of the spectacle frame as the protective coating 4 covering the spectacle frame.

For example, in a case where the protective coating 4 is formed by applying a coating solution to an eyeglass frame, assuming that the parts constituting the eyeglass frame are formed of a polyamide-based resin, the base component of the coating solution is used. It is preferable to use a different kind of resin instead of the same kind of polyamide resin, but it is also possible to use the same or the same kind of resin material on condition that there is no affinity with the parts to be coated.

As an optional component of the coating solution, silica, titanium,
A metal oxide such as zircon, an ultraviolet absorber, a colorant that does not significantly change the color of the substrate, a surfactant, and the like are used. In addition, antibacterial action can be obtained by adding an antibacterial agent such as an antibacterial zeolite.

Further, as a solvent for the coating solution, any solvent can be used as long as it can dissolve the above-mentioned substrate components. Although only one solvent may be used, the viscosity, wettability, volatilization rate, etc. of the coating solution may be appropriately controlled by using two or more solvents having different solubility, viscosity, volatility, and the like. Can be.

As for the covering of the pad portion, it is possible to use a film in which a transparent film is cured (a seal) in advance. In that case, it is convenient to attach the film to the pad portion using an adhesive tape having a high holding force and temporary bonding. In this case, the film material is preferably a polyester film, vinyl chloride, a vinyl polymer, polypropylene, or a polyethylene resin. In particular, when the pad portion is made of a silicone material, a polyester film tape (for example, No. Y-8401 manufactured by Sumitomo 3M Limited) is preferable and simple. This is an adhesive tape in which a polyester film and an adhesive are integrated, and a protective coating material and an adhesive are integrally formed.

Various coating materials that can be used depending on the material of the eyeglass frame were examined. First, with respect to the acrylic photocurable resin, the film to be formed was hard, and it was difficult to peel off later. The silicone rubber having a high tensile strength is good, but the silicone rubber having a low tensile strength is peeled off after application and drying, and has no function as a protective coating. Also, with regard to commercially available cosmetic packs, the strength of the formed film itself is insufficient, and it has been difficult to keep the applied state for a long time.

Further, as more specific coating materials, polyvinyl chloride and vinyl acetate copolymer 30% by weight, phthalic acid type plasticizer 9% by weight, epoxy type plasticizer 10
A coating solution was prepared by weight%, 1% by weight of a silicone release agent, 50% by weight of a ketone solvent and an aromatic solvent. This coating solution is applied to parts of an eyeglass frame made of polyamide, acrylic and acetylcellulose by a dipping method at a lifting speed of 50 mm / min.
By leaving it for a while, it was naturally dried to obtain a protective film. However, this coating was transparent, and the appearance and color of the main body parts were maintained, and the coating treatment was not felt while maintaining the color and shape, and the coating was easy to peel off. However, polyamide, acrylic and acetyl cellulose resins In each of the frame parts, the base material was discolored, and the original shape could not be maintained.

Next, a method of manufacturing the above-described display spectacle frame with a protective cover will be described. In the method of the present invention, first, the above-mentioned coating solution for spectacle frames is applied to all or a part of the spectacle frames. When the coating solution is applied to a part of the eyeglass frame, it is particularly preferable to apply the coating solution to a part in contact with the wearer's skin, for example, a temple part, a modern part, and a pad part.

The coating amount of the coating solution is preferably such that the thickness of the coating film formed after curing is preferably 20 μm to 20 μm.
It is appropriately selected to be about 500 μ. As a method for applying the coating solution, there are an immersion method, a brush coating method, a spray method and the like, and it is particularly preferable to use the immersion method.
In the immersion method, the immersion time varies depending on the type of the solvent, the concentration of the substrate component, the required film properties, and the like, but is usually preferably about 1 to 10 seconds. The reason is that if the coating time is less than 1 second, the coating amount of the coating solution is small and a coating film having a sufficient film thickness cannot be obtained. Because.

In the dipping method, the lifting speed is also important, but depends on the viscosity of the coating solution. For example, when the viscosity of the coating solution is about 300 poise, the pulling speed may be 100 to 200 mm / min.

In general, when the lifting speed is high, the film thickness becomes large, and the appearance may be impaired due to shrinkage after curing. If the pulling speed is low, a specified film thickness cannot be obtained or workability becomes poor, resulting in high cost. In this immersion method, the immersion operation can be performed a plurality of times by changing the immersion direction. For example, when the film thickness is different between the upper part and the lower part, or when bubbles attached to the component are removed, the second immersing operation can be performed by reversing the upper part and the lower part after the first immersing operation. When a low-viscosity coating solution is used, it is preferable to repeat the dipping operation a plurality of times. The thickness of the finally obtained coating film can be controlled by the number of immersion operations. The immersion operation is preferably performed in a clean room so that dust and foreign matter do not enter.

Next, in the method of the present invention, the coating solution applied to the spectacle frame parts is cured.
As a curing method, natural drying or hot air drying is preferably used. Particularly preferred is a method in which both are combined.
If the temperature is rapidly increased during drying, additives such as a plasticizer in the spectacle frame material may adversely affect the coated surface, possibly causing cracks or whitening. Therefore, it is preferable that curing is performed as slowly as possible.

(Example 1) 2 in which a main agent and a curing agent were mixed
Component-added high-strength liquid silicone rubber (for example, TS
To a solution of E3453A: Toshiba Silicone Co., Ltd., a curing agent (for example, TSE3453C: manufactured by Toshiba Silicone Co., Ltd.) is added in an amount of 10% by weight based on the total volume of the liquid silicone rubber solution. Agent (for example, silicone oil ME90: manufactured by the company)
Is added and mixed to prepare a coating solution. Immediately after mixing, the coating solution was put into a vacuum chamber for about 10 minutes and subjected to sufficient defoaming treatment to obtain a coating solution containing silicone rubber as a main component. At this time, the viscosity was about 300 poise.

FIG. 2 is a diagram showing a modern portion of the temple portion of the eyeglass frame, and FIG. 3 is a diagram showing a pad portion of the eyeglass frame. In this example, the modern part 2 is made of polyamide, and the pad part 3 is made of polycarbonate. A coating solution is applied to the modern part 2 and the pad part 3 to form the protective coating 4. That is, the modern part 2 made of polyamide and the pad part 3 made of polycarbonate are immersed once in the coating solution at a pulling rate of 50 mm / min. Further, at room temperature (about 20 ° C.),
After leaving it for a while, it was dried naturally to obtain a protective coating 4 having an average thickness of about 100 μm on the surface. This protective coating 4 was transparent, supple, and did not make the user feel the coating process while maintaining the color and shape of the main body parts in appearance.

Next, one week later, an attempt was made to peel off the protective coating 4 from the modern part 2 with respect to the protective coating 4 of the modern part 2. FIG. 4 is a diagram showing an example of peeling of the protective coating formed on the modern part. As shown in FIG. 4, the end of the protective coating 4 is grasped by a hand in the bending direction of the lower end of the modern part 2 from the boundary between the temple part 1 and the modern part 2, and is pulled and turned. The protective coating 4 could be easily peeled off, and the coated portion did not change at all, and the state at the time of manufacture was maintained. Similar results were obtained for the peeling of the protective coating 4 from the pad portion 3.

(Example 2) Polyurethane resin obtained by adding a surfactant, silicone or a fluorine-based release aid and an alcohol solvent to a polyurethane resin as a main component (for example, trade name "Ventilation fan repack": (Rinley Co., Ltd.) is used, and an ethyl alcohol-based solvent is added thereto for the purpose of adjusting the viscosity, and mixed so that the viscosity becomes about 300 poise to prepare a coating solution. Immediately after mixing, the mixture was placed in a vacuum chamber for about 15 minutes and sufficiently defoamed.

In this embodiment, a protective coating is formed on a modern part made of acetylcellulose. Before applying the coating solution of this example to the modern part,
Attach a tear tape to the modern part to help remove the protective coating. FIG. 5 is a diagram showing an example in which a peeling tape is attached to a modern part. The pad is made of a silicone rubber material, and a protective coating is formed on the material. Here, a film (for example, No. Y-840 manufactured by Sumitomo 3M Limited) previously formed into a transparent seal is used.
1) was affixed to the pad portion particularly on the side to which the nose hits to form a protective coating.

As shown in FIG. 5, a strip-shaped tearing tape 5 is applied to the modern part 2 made of acetylcellulose for peeling, and the end of the tape is left to be pulled up to the coating solution at a speed of 45 mm / min. Perform immersion. next,
By leaving it at room temperature (about 20 ° C.) for 20 hours, it was dried naturally to obtain a protective coating having an average surface coating of about 90 μ. FIG. 6 is a diagram showing a state in which a coating solution is applied from above the peeling tape to form a protective coating. This protective coating 4 is transparent, and in appearance,
The shape was maintained and the coating treatment was not felt. In particular, as compared with the coating film of Example 1, the film had good slipperiness, was excellent in antistatic effect, and hardly adhered dust and the like.

Next, ten days later, the tear tape 5 is gripped against the protective cover 4 of the modern part 2 of the spectacle frame, and the modern part 2 is moved from the boundary between the modern part 2 and the temple part.
Was pulled in the direction of curvature of the lower end of the sample and peeled off. On the other hand, the film which had been transparently sealed was peeled off from the pad portion. In addition, there was no change in the portion where the coating was made, and the state at the time of manufacture was maintained.

(Embodiment 3) In this embodiment, instead of applying a coating solution to form a protective coating, a heat-shrinkable tube is placed on a modern portion of an eyeglass frame to form a protective coating. FIG. 7 is a diagram showing a state before the heat-shrinkable tube is put on the modern part of the eyeglass frame.

Here, a heat-shrinkable tube 6 made of polyvinyl chloride was used as a protective coating, and this was applied to the modern part 2 of a cellulose propionate-based spectacle frame. Although not shown, first, a strip-shaped tearing tape is attached to the modern part 2 for peeling, and then a heat-shrinkable tube 6 made of polyvinyl chloride is inserted into the modern part 2 while leaving one end of the tape. The heat-shrinkable tube 6 was heated and shrunk using a heating device (for example, an eyeglass frame heater or a dryer) to form a protective coating. This protective coating was transparent, and the appearance and color of the main body parts were maintained, and the coating treatment was not felt while maintaining the appearance. In particular,
As compared with the coating of Example 1, the coating had good slipperiness and an excellent antistatic effect.

Next, 10 days later, the protective tape of the polyvinyl chloride heat-shrinkable tube 6 is gripped with a tear tape and pulled from the boundary between the modern part and the temple part in the bending direction of the lower end of the modern part. , Peeled off. The portion where the coating was applied did not change at all, and the state at the time of manufacture was maintained.

(Example 4) In Example 4, a heat-shrinkable tube made of polypropylene was used as a protective coating, and this was applied to the entire coating of the metal titanium temple. As in Example 3, first, a strip-shaped tearing tape 4 is attached to the temple portion for peeling, and then a heat-shrinkable tube made of polypropylene is inserted into the entire temple portion, leaving a part of the tearing tape 4. Then, the heat-shrinkable tube was heated and shrunk using a hot-air heating device to form a protective coating.

Next, 10 days later, one end of the tearing tape on the side of the tearing tape was gripped against the protective coating of this frame and pulled in the direction of the temple end of the temple, and peeled off. No change was observed, and the same results as in Example 3 were obtained.

As a further embodiment, a so-called water-based paint is used as a main component as a coating solution to be applied to the spectacle frame, to which a peeling aid and a viscosity adjusting solvent are added, and if necessary, a curing retarder and the like are added. And deaerated under reduced pressure.

[0038]

As described above, according to the present invention, since a protective coating which can be easily peeled off without affecting the base material of the eyeglass frame main body is formed, dirt due to sweat, cosmetics, etc. is directly exposed to the eyeglasses during display. Adhesion to the frame body is prevented, and the buyer does not feel uncomfortable in hygiene. Further, it is possible to prevent the eyeglass frame main body from being scratched during the exhibition, and to prevent a decrease in the commercial value due to the exhibition.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of an eyeglass frame according to the present invention.

FIG. 2 is a diagram showing a modern portion of a temple portion of the eyeglass frame.

FIG. 3 is a diagram showing a pad portion of an eyeglass frame.

FIG. 4 is a diagram showing an example of peeling off a protective coating formed on a modern part.

FIG. 5 is a diagram showing an example in which a peeling tape is attached to a modern part.

FIG. 6 is a view showing a state in which a coating solution is applied from above a peeling tape to form a protective coating.

FIG. 7 is a diagram showing a state before the heat-shrinkable tube is put on the modern part of the spectacle frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Temple part 2 Modern part 3 Pad part 4 Protective coating 5 Tape 6 Heat shrink tube

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G02C 5/00-5/20

Claims (8)

(57) [Claims] 1. A transparent protective coating having incompatibility and releasability with respect to the material of the temple and the pad is formed on at least the temple and the pad of the eyeglass frame in a state where the final processing has been performed. An eyeglass frame characterized by the above. 2. The spectacle frame according to claim 1, wherein the protective coating is formed by applying a coating solution containing silicone rubber or a polyurethane resin as a main component to the temple portion and the pad portion. 3. The spectacle frame according to claim 2, further comprising a tape under the protective coating to assist in peeling the protective coating. 4. The spectacle frame according to claim 2, wherein the coating solution contains an antibacterial agent. 5. The eyeglass frame according to claim 1, wherein said protective coating is formed by covering a heat shrinkable tube on said temple portion and heat shrinking said heat shrinkable tube. 6. The eyeglass frame according to claim 1, wherein the protective coating is an adhesive tape in which a protective coating material and an adhesive are integrally formed. 7. A coating solution comprising a silicone rubber or a polyurethane resin having no affinity for the material of the contacting part is applied to at least a part of the spectacle frame in a state where the final processing has been performed, at the time of wearing. An eyeglass frame characterized in that a transparent and easily peelable protective film to be peeled off at the time of sale is formed. 8. A step of forming a transparent and easily peelable protective film having no affinity for the material of the temple and pad portions on at least the temple and pad portions of the spectacle frame in a state where the final processing has been performed. A method for manufacturing an eyeglass frame, comprising: