JP2005047119A - Synthetic resin product, its manufacturing method, temple for glasses, front member for glasses and glasses - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin product not bringing about the deterioration of a hue and a pattern with the elapse of time and having a high grade feeling, especially a temple for glasses, a front member for the glasses, the glasses and a manufacturing method of the synthetic resin product. <P>SOLUTION: The synthetic resin product is constituted of a synthetic resin body and a metal core and the synthetic resin body is made transparent at least on the side opposed to the printing surface applied to the metal core thereof while the hue and the pattern are printed on the surface of the metal core inserted in the synthetic resin product by printing ink. Further, the printed surface is coated with a coating resin having a heat-resistant temperature not lower than that of the printing ink and, after this coated printed surface is dried and fixed, the metal core is heated to 250-350°C to immediately partially melt the metal core heated from the end part thereof to press the partially melted metal core into the synthetic resin body before cooling and fixing the same. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a synthetic resin product, and a synthetic resin product, a temple for spectacles, a front member for spectacles, and spectacles.

  Conventionally, temples for glasses (vines) and front members for glasses (Dim, Watari, Yama) have been variously colored and patterned in order to impart fashionability. In particular, recent temples for glasses and front members for glasses are required to have more fashionable elements in terms of color and pattern, and the range of fashionability can be expanded from metal frames. It is being changed again.

Recently, as a response to these demands, for example, for a temple for glasses, various patterns are printed by a special curved surface printing method. (For example, see Patent Document 1)
However, the pattern printed on the outer surface of the temple may deteriorate in fashion due to the frequency of use. On the other hand, a positive attempt has been made to give the color and pattern a deeper and more luxurious feeling by covering the color and pattern with a transparent resin.

JP 10-129104 A (paragraph number 0012, lines 1 to 5)

As described above, a fashionable pattern is formed on a synthetic resin product, in particular, a temple for eyeglasses and a front member for eyeglasses, and it does not deteriorate with the frequency of use and has a deep luxury feeling. Synthetic resin products, in particular, temples for eyeglasses and front members for eyeglasses are desired, and there is a strong demand for manufacturing methods thereof.
In view of the above, the present invention provides a synthetic resin product that does not cause deterioration in color and pattern over time and is rich in a high-class feeling, in particular, a temple for glasses, a front member for glasses, and glasses, and a method for manufacturing the same. The purpose is to do.

The method for producing the synthetic resin product of the present invention comprises:
1) It is composed of a synthetic resin body and a metal core, and the synthetic resin body is transparent at least on the side facing the printing surface applied to the metal core, and is inserted into the synthetic resin body Colors and patterns are printed on the gold surface with printing ink, and the printed surface is coated with a coating resin having a higher heat resistance temperature than the printing ink, and after drying and fixing treatment, the metal cored bar is coated with 250 to 350 The metal core bar heated from its end is immediately partially melt-pressed into the synthetic resin body after being heated to 0 ° C., and then cooled and fixed.

2) A front portion and a back portion synthetic resin body, and a front portion synthetic resin body that is composed of a metal core and is opposed to a printing surface applied to at least the metal core between the front portion and the back portion synthetic resin body. And a color and pattern are printed with printing ink on at least the surface of the metal core that is laminated and fixed between the front and back synthetic resin bodies and facing the front synthetic resin body. The metal core bar printed using a solvent or an adhesive is laminated between the mating surfaces of the front and back synthetic resin bodies and fixed by pressure contact.

3) In the above 1) or 2), the material of the synthetic resin body is selected from polyacetal, acetate, nylon, celluloid,
4) In the above 1) to 3), the coating resin is a fluorine resin paint or a mixed coating agent.

The present invention also provides:
5) A synthetic resin product produced by the production method according to any one of 1) to 4) above, and
6) A spectacle temple produced by the production method according to any one of 1) to 4) above.
7) A front member for spectacles characterized by being manufactured by the manufacturing method according to any one of 1) to 4) above,
8) Eyeglasses characterized by using the eyeglass temple described in 6) and / or the eyeglass front member described in 7).

  The present invention comprises a synthetic resin body and a metal core, the synthetic resin body being transparent at least on the side facing the printing surface applied to the metal core and being inserted into the synthetic resin body A pattern is printed on the surface of the core metal with printing ink, and the printed surface is coated with a coating resin having a higher heat resistance than that of the printing ink. After drying and fixing, the metal core is heated to 250 to 350 ° C. Immediately by partially melting and press-fitting the metal core bar heated from its end into the synthetic resin body, and after cooling and fixing, the front and back synthetic resin bodies and the metal core bar The front and back synthetic resin bodies are transparent, and at least the front synthetic resin body facing the printing surface applied to the metal core is transparent and laminated between the front and back synthetic resin bodies The metal to be fixed The metal printed by using a solvent or an adhesive between the front and back synthetic resin bodies printed with colors and patterns on the surface facing at least the front synthetic resin body of gold using printing ink By laminating the cored bar and fixing it by pressure contact, it is possible to produce deep, high-quality synthetic resin products that do not cause deterioration of color and patterns over time, especially temples for glasses, front members for glasses, and glasses. It can be provided at low cost.

In the synthetic resin body of the present invention, at least the transparent visible side such as the pattern of the synthetic resin body is transparent enough to make the color and pattern printed on the surface of the inserted metal core bar transparent. It is necessary to be a synthetic resin body. Of course, even if this is lightly colored, it is not excluded if the internal color and pattern can be seen through. For the synthetic resin body, a transparent material having a relatively high processing temperature range and good moldability is suitable.
Polycarbonate, polyacetal, polystyrene, polypropylene, acetate, nylon 6.6, celluloid and the like are used.
In particular, in the case of eyeglass temples and eyeglass front members, polyacetal and acetate are preferred, and celluloid, nylon 6.6 and the like are preferred if the metal cored bar insertion method is an adhesion method.

The printed surface of the metal core is coated with a coating resin having a higher heat resistance than the printing ink, and this is dried and fixed. This is for preventing deterioration of the printing surface due to heat treatment and press-fitting, and a fluororesin paint or a mixed coating agent is used as the coating resin.
The coating thickness is preferably 1 μm to 200 μm, and if the thickness is less than 1 μm, the effect of preventing deterioration is lost, and if it exceeds 200 μm, the quality of the color and the pattern is drastically reduced.
The mixed coating agent is preferably an acrylic coating agent or an acrylic coating agent mixed with an epoxy resin and / or a melamine resin. After the coating, a dry immobilization treatment is carried out to dry it at about 180 ° C. for several tens of minutes. Thereby, the improvement of the adhesive force of a printing surface and the deterioration at the time of insertion of the color and pattern by surface hardening can be prevented.

When a metal core bar heated from its end is partially melt-fitted into the synthetic resin body, so-called shooting is performed, the heating temperature depends on the insertion of the metal core bar until the insertion is completed. Only the insertion center portion of the resin is melted and the outer shape portion of the synthetic resin body is selected within a range that does not cause deformation.
The heating temperature is selected and adjusted depending on the type of the synthetic resin body and the size of the cross section of the synthetic resin body relative to the core metal, but is substantially selected in the range of 250 to 350 ° C.

The material and shape of the metal core are selected and designed mainly depending on mechanical strength, bendability and the like. As the material, stainless steel alloy, Ni alloy, Ti alloy and the like are preferable.
In addition, the printing method on the metal core surface is not particularly limited, such as a screen method, a pad method, and a transfer method, but it is desirable to print using a curved surface printing method using offset printing.

Synthetic resin body may be transparent as a whole, but it is a shooting type integrated composite for the purpose of improving fashionability by making the color and pattern applied to the metal core bar more prominent and emphasized. In the resin body, it is preferable to use a colored metal core and a colored synthetic resin body portion facing the surface opposite to the surface on which the pattern is applied.
Further, in the case of a two-part type of front and back synthetic resin bodies, it is preferable to use those colored on the back synthetic resin body for the reasons described above.
Note that the transparent synthetic resin body facing the printing surface is given a depth in color and pattern due to the lens effect due to the presence of the transparent body, thereby improving the sense of quality. Accordingly, it is needless to say that it is desirable that there are no obstacles such as air bubbles and foreign matters that obstruct transmission.

FIG. 1 is an explanatory diagram schematically showing an example of eyeglasses in Example 1 of the present invention.
FIG. 2 is an explanatory diagram showing an example of a cross section of the temple for eyeglasses in the present embodiment.
In the figure, 1 is glasses, 2 is a temple for glasses, 3 is a metal core, and 4 is a pattern.

The specifications of the first embodiment are as follows.
Synthetic resin products: Temple for glasses Synthetic resin body; Material Acetate material Solid metal core; Material Ni alloy (cross section 3mm x 1mm ellipse)
Printing; Curved printing of color pattern with baking type printing ink Coating; Fluororesin Film thickness approx. 10μm

The above-mentioned coating was applied to the metal core bar printed on the surface, and after heating to 310 ° C., the metal core bar was inserted from the end face of the synthetic resin body by a normal shooting method.
After cooling, the presence or absence of abnormalities such as the generation of bubbles due to the insertion of a metal core was observed, and the display state of the color pattern was visually observed.
As a result of observation, defects such as bubble generation and deformation of the outer shape were not recognized. Moreover, the visible state of the color and the pattern was also good.

FIG. 3 is an explanatory diagram illustrating an example of a cross section of another temple for eyeglasses according to the second embodiment.
In the figure, 21 is a front synthetic resin body, and 22 is a back synthetic resin body. Other parts similar to those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The specifications of the second embodiment are as follows.
Synthetic resin products: Temple for glasses Synthetic resin body; Material Nylon 6.6 Two-sided shape metal cored bar; Material Ni alloy (cross section 3mm x 1mm ellipse)
Printing; Curved printing of color pattern with printing type printing ink Coating; Fluoropolymer paint Film thickness: approx.
Adhesive; pressure sensitive adhesive

The above-mentioned coating is applied to the metal core metal printed on the surface, and after heating and drying, the metal core metal is set between the front and back synthetic resin bodies on which the adhesive is applied to the mating surface, and pressure bonded. .
After cold bonding, the state of insertion of the metal core, the bonding state between the front and back synthetic resin bodies, and the display state of the color pattern were visually observed.
As a result of observation, the adhesion state was good. Some of the color and pattern transmission visible state lacked some sharpness, but it was in a generally good range as a product.

The specifications of the second embodiment are as follows.
Synthetic resin product: Arm for robot Synthetic resin body; Material Nylon Semi-circular shape (Semi-cut section with outer diameter 15mmφ x Inner diameter 10mmφ, length 300mm)
Metal cored bar; Material Shape memory alloy (outer diameter 10mmφ × 300mm × 0.1mmt)
Printing; Curved printing of color mark pattern with offset printing ink Adhesive; Pressure sensitive adhesive

A metal core bar printed with the above specifications was inserted into a semicircular divided synthetic resin body imitating a cylindrical robot arm, and the divided surfaces were bonded and fixed with an adhesive.
The state of insertion of the metal core, the state of adhesion between the front and back synthetic resin bodies, and the display state of the color pattern were visually observed.
As a result of observation, the color mark pattern was clear and the adhesion between the front and back synthetic resin bodies was also good. In addition, the reproduction of a predetermined memory shape (R shape) was confirmed by heating to a predetermined temperature from the inner diameter side.

  The above embodiments of the present invention show only a part of the embodiments in the claims, and do not limit other implementations in the claims.

  The present invention is mainly applied to spectacle temples in various types of spectacles, but can also be applied to various products that require transmission-visible colors and patterns in a state in which deterioration is prevented. Moreover, it can be used as a product member for preventing electromagnetic waves by using printing ink mixed with conductive or magnetic powder.

It is explanatory drawing which shows typically one example of spectacles in Example 1 of this invention. It is explanatory drawing which shows one example of the cross section of the temple for spectacles in a present Example. In Example 2, it is explanatory drawing which shows one example of the cross section of the temple for other spectacles.

Explanation of symbols

1 Glasses 2 Glasses Temple 21 Front Synthetic Resin Body 22 Back Synthetic Resin Body 3 Metal Core 4 Pattern

Claims (8)

  A synthetic resin body and a metal core, the synthetic resin body is transparent at least on the side facing the printing surface applied to the metal core, and the surface of the metal core inserted into the synthetic resin body In this case, the color and pattern are printed with printing ink, and the printed surface is coated with a coating resin having a higher heat resistance temperature than that of the printing ink. After drying and fixing, the metal core is heated to 250 to 350 ° C. A method for producing a synthetic resin product, comprising: heating, immediately melting and pressing the metal core metal heated from its end into the synthetic resin body, and post-cooling and fixing.   The front and back synthetic resin bodies and the metal cored bar are transparent, and at least the front part synthetic resin body facing the printing surface applied to the metal cored bar is transparent. And printing a color and a pattern with a printing ink on at least a surface of the metal core that is fixed between the front and back synthetic resin bodies and facing the front synthetic resin body. A method for producing a synthetic resin product, comprising laminating the metal core bar printed using a solvent or an adhesive between the mating surfaces of the back synthetic resin body and fixing them by pressure contact.   The method for producing a synthetic resin product according to claim 1 or 2, wherein the material of the synthetic resin body is selected from polyacetal, acetate, nylon, and celluloid.   The method for producing a synthetic resin product according to any one of claims 1 to 3, wherein the coating resin is a fluororesin paint or a mixed coating agent.   A synthetic resin product produced by the production method according to any one of claims 1 to 4.   A temple for spectacles manufactured by the manufacturing method according to any one of claims 1 to 4.   The front member for spectacles manufactured by the manufacturing method of any one of the said Claims 1-4.   A pair of spectacles using the temple for glasses according to claim 6 and / or the front member for glasses according to claim 7.

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