KR100413568B1 - Method of Producing Switch member - Google Patents

Abstract

By irradiating a laser directly on the surface of a resin molded article, a low-cost, non-pollution method that enables the recycling of a resin molded article, the letter and the pattern of the black color development excellent in the visibility, etc. At the same time, a wiring mechanism switch member having excellent smoothness and glossy appearance is obtained.

It contains ABS resin or ABS resin polymer alloy. It contains compounds of transition metals selected from Cu, Ni and Fe and colored pigments. It contains 0.001-0.02 mass% of carbon black. 0.1-10 mass% of titanium dioxide is contained. The surface of the resin molded article made of such a molding resin material was irradiated with a YAG laser under a condition of a power density of 5 to 40 kW / cm 2 and a pulse width of 70 to 200 nsec to form a surface roughness of the laser irradiation part 1 of 3 m or less. do. The surface roughness of the non-laser irradiation part 2 which is not irradiated with a laser is formed in 0.5 micrometer or less.

Description

Manufacturing method of wiring device switch member {Method of Producing Switch member}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a switch member made of synthetic resin, in which a decorative portion (laser irradiation portion) in which letters, patterns, etc. are processed by laser energy irradiation, is specifically described as YAG (Yttrium Aluminum). Garnet crystal; yttrium aluminum garnet crystal) A wiring mechanism switch member made of a resin material in which letters or patterns are formed on a surface by irradiating a laser beam, and has excellent smoothness when contacted by hand at the time of use, The present invention relates to a method for manufacturing a wiring mechanism switch member using a black color development technique which has an apparent glossiness and excellent visibility.

Conventionally, as a handle member of a wiring mechanism, thermosetting resins, such as urea resin, and resin molded articles made of thermoplastic resins, such as ABS resin, are used. In such a handle member, a transfer technique such as a hot stamp or in-mold transfer or a printing technique such as silk printing or pad printing is used for improving decorative properties.

Moreover, in recent years, as a method of marking by irradiating a laser beam directly on the surface of a resin molded article as a laser marking method, there exist some which are disclosed by Unexamined-Japanese-Patent No. 56-45926 and 56-149995.

However, it is possible to decorate letters, shapes, and the like on the handle members of the switch for wiring mechanism

In carrying out the treatment, if the transfer technique is applied, the transfer film is expensive, and there is a problem that the used film itself becomes industrial waste. In addition, when the printing technique is applied, troubles such as management of organic liquids such as ink materials and solvents are caused, and there are also problems such as odor generation. In addition, since the printing layer and the coating film are formed, they become impurities in the recycling process, which may require a lot of trouble and cost to remove the impurities, and the recycled product may cause deterioration of physical properties due to impurities or poor appearance. There is.

On the other hand, in the conventional laser marking method used for the manufacture of a key board, it is difficult to obtain an appearance that is inferior to a transfer product or a printed product.

The present invention has been made in consideration of the above-mentioned points, and is produced by a black color development having excellent visibility by a non-pollution method which is low cost and easily recycles a resin molded article by performing laser irradiation directly on the resin molded article surface. It aims at obtaining the wiring mechanism switch member which is excellent in the smoothness at the time of contact with a hand by drawing a character, a shape, etc., and has a glossiness in external appearance.

1: shows an example of embodiment of this invention, (a) is a top view, (b) is an enlarged view of the "A" part of (a).

FIG. 2: shows another example of embodiment of this invention, (a) is a top view, (b) is an enlarged view of the "A" part of (a).

3 shows still another example of the embodiment of the present invention, where (a) is a plan view and (b) is a partially enlarged view of (a).

4 is a graph showing the measurement results of surface roughness in Example 10. FIG.

(Explanation of the sign)

1 ... laser irradiator 2 ... non laser irradiator

3 ... wiring device switch member

The manufacturing method of the wiring mechanism switch member 3 which concerns on Claim 1 of this invention contains ABS resin or ABS resin polymer alloy as a resin component, The compound of the 1 or more types of transition metals chosen from copper, nickel, and iron, In the manufacturing method of the wiring mechanism switch member 3 formed of a molding resin material containing at least one coloring pigment, carbon black and titanium dioxide are 0.001 to 0.02% by mass, respectively, based on the total amount of the molding resin material, By irradiating the surface of the resin molded article which consists of molding resin material containing 0.1-10 mass% with a YAG laser on condition of a power density of 5-40 mA / cm <2> and a pulse width of 70-200 nsec, a laser irradiation part ( The surface roughness of 1) is formed to 3 micrometers or less, and the surface roughness of the non-laser irradiation part 2 which is not irradiated with a laser is formed to 0.5 micrometer or less.

The invention described in claim 2 is characterized in that, in addition to the configuration of claim 1, an average particle diameter of 10 to 90 nm is used as the carbon black contained in the molding resin material.

The invention described in claim 3 is characterized in that, in addition to the configuration of claim 1 or 2, antimony trioxide is contained in the molding resin material at a ratio of 0.2 to 0.8% by mass relative to the total amount of the molding resin material. It is to be done.

In addition, the invention described in claim 4 is characterized in that, in addition to the configuration of claim 3, an average particle diameter of 2.0 µm or less is used as antimony trioxide contained in the molding resin material.

Furthermore, the invention described in claims 5 to 7, in addition to the configuration of any one of claims 1 to 4, in the molding resin material, titanium yellow, trivalent iron oxide and green-based calcined pigment as a colorant; It is mix | blended so that the total amount of components may be less than 1 mass% with respect to the whole quantity of molding resin material.

(Embodiment of the Invention)

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described.

As the resin component to be blended in the molding resin material, ABS resin (acrylonitrile butadiene styrene resin) or ABS resin polymer alloy is used, and at least one transition metal compound and at least one coloring pigment are blended. do.

As a transition metal compound, although the compound of the transition metal selected from copper, nickel, and iron is used, the compound classified into a pigment, dye, and other additives may be sufficient. As such a transition metal compound, for example, oxides such as iron oxide and copper oxide, sulfides such as copper sulfide and nickel sulfide, phosphates such as nickel phosphate, iron phosphate, and copper phosphate, and the like can be used. According to the combined effect with carbon black and titanium dioxide, black color development can be realized by laser irradiation of low power, without degrading the durability and mechanical performance of a resin molded article. Here, the transition metal compound itself may be used as the coloring pigment.

As a coloring pigment, carbon black is mix | blended in the ratio of 0.001-0.02 mass% with respect to whole quantity of molding resin material, and titanium dioxide is mix | blended in the ratio of 0.1-10 mass% with respect to whole quantity of molding resin material. By blending carbon black in this concentration range, the absorption efficiency of the YAG laser is improved in the resin molded article, and the absorption of the YAG laser is generated.

By promoting the thermochemical reaction of the resin component by heat, it is possible to easily obtain a black color development. At this time, the foaming reaction of the resin component is also accelerated by the irradiation of the YAG laser.

As the bubble portion formed by the foaming reaction ruptures, the surface roughness Rp of the laser irradiation part 1 is increased, but the titanium dioxide is blended in the above concentration range, so that the titanium dioxide caused by the high refractive index characteristic causes the laser to be high. By using the reflectance performance, it is possible to prevent the entry of the laser into the inside of the resin molded article, to maintain the black color development by the laser irradiation on the surface layer portion of the resin molded article, and also to suppress the progress of excessive foaming reaction to the laser irradiation section The surface roughness Rp of (1) can be prevented from becoming too large. Furthermore, by the function of this titanium dioxide as a white coloring pigment, the resin molded article itself can be colored in a white or light color system, and the black color development and excellent contrast of the laser irradiation part 1 can be obtained, and it is excellent in visibility. The decorating process can be performed.

In addition, when the carbon black has an average particle diameter of 10 to 90 nm, the laser absorption efficiency during laser irradiation of the resin molded article is further improved, and the color development efficiency is particularly excellent, and at the same time, the mechanical strength of the resin molded article is deteriorated. Can be suppressed. Here, if the average particle diameter of carbon black is less than the said range, there exists a possibility that laser absorption efficiency may not fully be acquired, and if it exceeds the said range on the contrary, there exists a possibility that the intensity | strength fall of a resin molded article may occur.

Moreover, as a coloring agent, the baking pigment of titanium yellow, iron oxide, and a green system is mix | blended, and also the total amount of these components is 0.03-1 quality with respect to the total amount of molding resin material.

It mix | blends so that it may become a range of amount%. In this case, the color tone of a resin molded article can be adjusted so that brightness may become high further, without reducing the color development by laser irradiation.

In addition, it is preferable to mix | blend antimony trioxide with a molding resin material, In this case, black color development of the laser irradiation part 1 by laser irradiation can be further promoted. The addition amount of this antimony trioxide is 0.2-0.8 mass with respect to the whole quantity of molding resin material.

Although it is preferable to set it as%, in this case, black color development of the laser irradiation part 1 which is especially excellent in smoothness, glossiness, and visibility can be obtained by laser irradiation. Moreover, although the flame retardance is often required for the wiring mechanism switch member 3, antimony trioxide also acts as a flame retardant material, and can provide a flame retardance to the wiring mechanism switch member 3.

The average particle diameter of the antimony trioxide is preferably set to 2.0 µm or less. In this case, a clear picture can be drawn without blurring the outline of the laser irradiation section 1, and at the same time, the surface roughness of the laser irradiation section 1 By reducing Rp), particularly excellent smoothness can be obtained. Moreover, the fall of the Izod impact strength can be suppressed and the sufficient impact characteristic calculated | required as the wiring mechanism switch member 3 can be realized. Here, although the lower limit of the average particle diameter of antimony trioxide is not set separately, a practical lower limit is 0.1 micrometer.

Moreover, in order to suppress the time-lapse deterioration characteristic peculiar to a resin molded article, an additive of each kind can be mix | blended, without reducing the coloring property by laser irradiation. By using such an additive, it can suppress that the surface of the laser irradiation part 1 of the resin molded article and the surface of the non-laser irradiation part 2 change with long use indoors.

In obtaining a resin molded article, since the resin molding material obtained by mix | blending the above components by general injection molding can be shape | molded, it is molded cheaply and easily, without using a special molding technique. At this time, the surface roughness Rp of a resin molded article is shape | molded to 0.5 micrometer or less by adjusting the inner surface smoothness of a shaping | molding die. Here, although the lower limit of the surface roughness Rp of a resin molded article is not specifically limited, In normal mold shaping | molding, it becomes substantially 0.01 micrometer.

Although the wiring mechanism switch member 3 is shape | molded by such a resin molded article, it is preferable to shape | mold as the handle 4 which directly touches a human hand.

In performing the decorative treatment on the resin molded article, the YAG laser is irradiated under a condition of a power density of 5 to 40 kW / cm 2 and a pulse width of 70 to 200 n sec. Painted on the surface.

At this time, the surface roughness Rp of the laser irradiation part 1 colored in black by laser irradiation is formed to be 3 micrometers or less. At this time, the lower limit of the surface roughness Rp of the laser irradiation part 1 fluctuates depending on the laser irradiation conditions, but becomes substantially 0.01 µm.

1 to 3 show an embodiment of the wiring mechanism switch member 3 formed as the handle 4.

In the example shown in FIGS. 1 and 2, the handle is formed in a rectangular shape in plan view.

The display part 5 which can be used to display which wiring mechanism is switched is formed in the surface center part of (4), and the laser irradiation part is provided in the both sides of the long longitudinal direction of the handle 4 with respect to the display part 5 The decorative pattern of the stripe shape which consists of (1) is formed. Each decorative pattern is composed of a line 6 in which a plurality of long lines (each 32 lines in the illustrated example) in parallel to the long longitudinal direction of the handle 4 are paralleled in parallel. Each la

The phosphorus 6 is composed of a plurality of dot-shaped laser irradiation units 1. Here, the laser irradiation part 1 is formed by scanning YAG laser (wavelength 1064nm) with respect to the handle 4 surface toward the long longitudinal direction of the line 6, and intermittently irradiating it. And the part other than the laser irradiation part 1 of the surface of the handle 4 is formed as the non-laser irradiation part 2.

In addition, in the example shown in FIG. 3, the handle 4 is formed similarly to FIG. 1, 2, and is comprised by the laser irradiation part 1 in one side of the long longitudinal direction of the handle 4 with respect to the display part 5 In a plan view, a substantially square decorative pattern is formed. This decorative pattern is composed of a plurality of dot-shaped laser irradiation units 1. Here, the laser irradiation part 1 is formed by intermittently irradiating a YAG laser with respect to the handle 4 surface toward the long longitudinal direction of the line 6, as shown in FIGS. And the part other than the laser irradiation part 1 of the surface of the handle 4 is formed as the non-laser irradiation part 2.

Thus, since the surface roughness Rp of the laser irradiation part 1 is formed in 3 micrometers or less, and the surface roughness Rp of the non-laser irradiation part 2 which is not irradiated with a laser is formed in 0.5 micrometer or less, it touches by hand. The touch will be smooth enough and there will be no discomfort. Furthermore, not only an excellent contrast can be obtained between the laser irradiator 1 and the non-laser irradiator 2, but also a glossy appearance can be obtained, and the lighting of home lighting fixtures, store luminaires, facility lights, etc. When used as a light switch, an excellent appearance can be obtained, and the interior value is also excellent. In addition, in forming a decorative pattern, since a transfer film is not used like printing, manufacturing cost can be reduced and waste can be reduced. Furthermore, since no printed layer or coating film is formed, and such impurities do not mix during recycling, the effort and cost of removing the impurities are reduced, and the physical properties of the recycled product are reduced or appearance due to the mixing of impurities. It is possible to prevent occurrence of defects and to facilitate recycling.

(Example)

Hereinafter, the present invention will be described in detail by way of examples.

(Example 1, Comparative Example 1, Comparative Example 2)

After mixing each component shown in Table 1 into a pill shape, it dried for 3 hours at 80 degreeC, cylinder temperature 230 degreeC, mold temperature 50 degreeC, injection pressure 3.92 MPa, injection speed 3m / min, injection time 20 second, and cooling Injection molding was carried out under the condition of time 30 seconds, and the handle 4 was molded as the wiring mechanism switch member 3. The surface of this handle 4 was intermittently irradiated with a YAG laser on the following conditions, and the decorative pattern of stripe shape was formed. Here, as shown in Fig. 1, a plurality of long lines 6 having a length of 23.5 mm and a width of 0.37 mm in a laser traveling direction (laser scanning direction) are formed so as to be arranged in a plurality of rows in parallel in parallel every 1.21 mm. (6) is a dot-shaped laser irradiation part 1 along the line 6 direction.

It is arrange | positioned every 125 mm, and it arrange | positions so that 4 pieces may be arranged side by side every 0.1 mm in the direction orthogonal to the line 6 direction.

YAG laser irradiation conditions

Wavelength 1064 nm

Average power 14㎾ / ㎠

Scan speed 1500mm / sec

Pulse frequency 12 kHz

Laser spacing 100㎛

Pulse width 150 nsec

Table 1 shows the results of visually determining the color of the non-laser irradiation unit 2 and the visibility of the laser irradiation unit 1 with respect to the handle 4 which is the wiring mechanism switch member 3 obtained as described above. . Here, visibility is evaluated based on the following evaluation criteria.

did.

◎ The color development of the laser irradiation part 1 is good, the contour is also sure, and the visibility is very good.

○ The color development of the laser irradiation part 1 is good, but the outline is somewhat unclear.

Although the color development property of the (triangle | delta) laser irradiation part 1 is bad, the outline is clear.

&Times; The color development of the laser irradiation part 1 is bad.

In addition, the result of measuring the surface roughness Rp of the laser irradiation part 1 and the non-laser irradiation part 2 with the surface roughness measuring instrument is also shown in parallel.

Table 1

As apparent from Table 1, in Example 1 in which the compounding amount of carbon black was 0.0109 mass%, the laser irradiation part 1 excellent in visibility, smoothness and glossiness was formed.

On the other hand, in Comparative Example 1 in which the compounding amount of carbon black is 0.0245 mass%, the compounding amount of carbon black is too large, and the surface roughness Rp of the laser irradiation part 1 becomes too large, and it is rough when contacted by hand. felt. In addition, the roughness of the surface of the laser irradiation part 1 made the color of the laser irradiation part 1 appear light, and the visibility fell.

Moreover, in the comparative example 2 in which carbon black is not mix | blended, visibility fell because the color development property of the laser irradiation part 1 fell.

(Examples 2-4)

After mix | blending each component shown in Table 2, it was made into the pill shape, and it injection-molded on the conditions similar to Example 1, and the handle 4 was shape | molded as the wiring mechanism switch member 3. The YAG laser was irradiated intermittently on the surface of this handle 4 on the following conditions, and the decorative pattern of stripe shape was formed. Here, the decorative pattern is a long line 6 having a length of 23.5 mm and a width of 0.37 mm in the laser traveling direction (laser scanning direction) as shown in FIG.

Are arranged so that a plurality of rows are arranged in parallel in parallel every 1.21 mm, and each line 6 is orthogonal to the direction of the line 6 while the dot-shaped laser irradiation unit 1 is arranged every 0.15 mm along the line 6 direction. It is configured to be arranged side by side every 0.125 mm in the direction.

-YAG laser irradiation condition-

Wavelength 1064 nm

Average output 10 ㎾ / ㎠

Scan speed 600 mm / sec

Pulse frequency 4 kHz

Laser spacing 125㎛

Pulse width 150 n sec

About the handle 4 which is the wiring mechanism switch member 3 obtained as mentioned above, similarly to Example 1, the color of the non-laser irradiation part 2 of the resin molding, the visibility of the laser irradiation part 1, and the laser irradiation part 1 And the surface roughness Rp of the non-laser irradiation part 2 are shown in Table 2.

TABLE 2

As apparent from Table 2, in Example 2 in which the average particle diameter of carbon black was 14 nm, the color development property of the laser irradiation part 1 was superior to Example 3 in which the average particle diameter of carbon black was 8 nm, and the average particle diameter of carbon black. The outline became clearer than Example 92 of this 92 nm, and the laser irradiation part 1 became especially excellent visibility. In addition, in Example 4, compared with Examples 2 and 3, the surface was somewhat rougher.

(Examples 5-7)

After mixing each component shown in Table 3, making it into the pill shape, it injection-molded on condition similar to Example 1, and formed the handle 4 as the wiring mechanism switch member 3. As shown in FIG. The surface of the handle 4 is intermittently irradiated with a YAG laser under the following conditions.

The decorative pattern of the stripe shape was formed. Here, the decorating pattern is the same as the case of Examples 2-4, and is comprised as shown in FIG.

-YAG laser irradiation condition-

Wavelength 1064 nm

Average output 10㎾ / ㎠

Scan speed 600 mm / sec

Pulse frequency 4kHz

Laser spacing 125㎛

Pulse width 150 nsec

With respect to the handle 4 which is the wiring mechanism switch member 3 obtained as described above, similarly to Example 1, the color of the non-laser irradiation part 2 of the resin molded article, the visibility of the laser irradiation part 1, and the laser irradiation part 1 And the surface roughness Rp of the laser irradiation part 1 are shown in Table 3.

TABLE 3

As shown in Table 3, in Example 5 in which 0.64% by mass of antimony trioxide was blended, the laser irradiation part was compared with Example 6 in which antimony trioxide was not blended.

In (1), black color development is excellent and visibility is improved especially. In Examples 5 and 6, the compounding amount of antimony trioxide was 1.28% by mass, and the smoothness of the laser irradiation part 1 was formed more than that of Example 7, and in Example 7, it was compared with Examples 5 and 6 by hand. When I touched it, the surface felt a bit whitish.

(Examples 8 and 9)

After mixing each component shown in Table 4 to make it a pill shape, it injection-molded on the conditions similar to Example 1, and formed the handle 4 as the wiring mechanism switch member 3. The surface of this handle 4 was intermittently irradiated with a YAG laser on the following conditions, and the decorative pattern of stripe shape was formed.

Here, the decorating pattern is the same as the case of Examples 2-4, and is comprised as shown in FIG.

-YAG laser irradiation condition-

Wavelength 1064 nm

Average output 10㎾ / ㎠

Scan speed 600 mm / sec

Pulse frequency 4 kHz

Laser spacing 125㎛

Pulse width 150 nsec

With respect to the handle 4, which is the wiring mechanism switch member 3 obtained as described above, the color of the non-laser irradiation unit 2 of the resin molded article, the visibility of the laser irradiation unit 1, and the laser irradiation unit 1 as in Example 1 The surface roughness Rp of the non-laser irradiator 2

did.

Further, after injection molding, a test piece having a thickness of 6.4 mm was made from the molding resin material, and after the notch was processed by cutting, the Izod impact strength (with a notch) was measured according to ASTM 256.

The above result is shown in Table 4.

Table 4

As apparent from Table 4, in Example 8, in which the average particle diameter of the antimony trioxide was 0.5 µm, the laser irradiation part 1 became clear, and the surface smoothness was not only excellent.

In addition, Izod's impact strength is also improved. On the other hand, in Example 9, in which the average particle diameter of the antimony trioxide was 5 µm, the contour of the laser irradiation part 1 tended to be somewhat blurred as compared with Example 8, and the surface of the antimony trioxide had a slight feeling of discomfort. In addition, the value of Izod impact strength could not be obtained as in Example 8.

(Example 10)

After mix | blending each component shown in Table 5 to make it a pill shape, it injection-molded on the conditions similar to Example 1, and the handle 4 was shape | molded as the wiring mechanism switch member 3. The surface of this handle 4 was intermittently irradiated with a YAG laser on the following conditions, and the decorative pattern of stripe shape was formed. Here, the decorating pattern is as shown in FIG.

The dot-shaped laser irradiator 1 is arranged every 0.125 mm in the laser traveling direction (laser scanning direction) and at every 0.1 mm in the direction orthogonal to the laser traveling direction inside the region 7 having one side of 10 mm. It is.

-YAG laser irradiation condition-

Wavelength 1064nm

Average output 8㎾ / ㎠

Scan speed 1500mm / sec

Pulse frequency 12 kHz

Laser spacing 100㎛

Pulse width 150 nsec

The color of the non-laser irradiation part 2 of the resin molded article was visually determined with respect to the handle 4 which is the wiring mechanism switch member 3 obtained as described above. In addition, the laser irradiation unit

The brightness of (1) and the non-laser irradiation part 2 was measured with the spectrophotometer whose measuring diameter is 8 mm. In addition, the surface roughness Rp of the laser irradiation part 1 and the non-laser irradiation part 2 was measured with the surface roughness measuring instrument. The above results are shown in Table 5. In addition, about the measurement result of surface roughness Rp, the measurement result of surface roughness Rp in the range of the area | region 7 in which the laser irradiation part 1 of the handle 4 surface was formed is shown in FIG.

Table 5

As apparent from Table 5, in Example 10, the laser irradiation part 1 excellent in all of visibility, smoothness, and glossiness was formed. In particular, since the total amount of the calcined pigments of titanium yellow, iron oxide, and green system was set to within 1 mass% of the total amount of the molding resin material, the non-laser irradiation part 2 became white, and the visibility was remarkably improved.

Here, a laser irradiation part is about the brightness of the non-laser irradiation part 2 being 90.

The brightness of (1) was 74, and it was confirmed that it had sufficient visibility.

As mentioned above, the manufacturing method of the wiring mechanism switch member which concerns on Claim 1 of this invention contains ABS resin or ABS resin polymer alloy as a resin component, The compound of the 1 or more types of transition metals chosen from copper, nickel, and iron, In the method for producing a wiring mechanism switch member molded from a molding resin material containing one or more coloring pigments, the coloring pigment contains carbon black at a ratio of 0.001 to 0.02% by mass, based on the total amount of the molding resin material, and titanium dioxide. YAG laser is irradiated on the surface of a resin molded article made of a molding resin material containing 0.1 to 10% by mass of the total amount of the molding resin material under a power density of 5 to 40 mA / cm 2 and a pulse width of 70 to 200 nsec. The surface roughness of the laser irradiator is formed to be 3 탆 or less, and the surface roughness of the non-laser irradiated portion to which the laser is not irradiated is reduced to 0.5 탆 or less. Therefore, in the laser irradiation part, the color development of the black system is improved, and the non-laser irradiation part is colored with a white or light color system to improve the contrast with the laser irradiation part, thereby improving the visibility of the laser irradiation part, and the visibility and glossiness of the laser irradiation part is improved. It is possible to form a decorative pattern such as an excellent character or a pattern, and furthermore, an increase in the surface roughness of the laser irradiated portion relative to the non-laser irradiated portion is suppressed and the tactile feeling is improved.

In addition, industrial waste can be reduced by not using a transfer film or the like at the time of manufacture, and at the same time, it is not formed to become impurities in the recycling of the printing layer, the coating film, etc., and the recycling becomes easy.

In addition to the constitution of claim 1, the invention described in claim 2 further uses an average particle diameter of 10 to 90 nm as carbon black contained in the molding resin material, so that the laser absorption efficiency during laser irradiation of the resin molded article is further increased. This improves the color development efficiency, and at the same time suppresses the occurrence of mechanical strength deterioration of the resin molded article.

In addition to the constitution of claim 1 or 2, the invention described in claim 3 contains antimony trioxide in the molding resin material in a ratio of 0.2 to 0.8% by mass relative to the total amount of the molding resin material. It is possible to obtain black color development of the laser irradiation part which is particularly excellent in smoothness, glossiness and visibility.

In addition to the constitution of claim 3, the invention described in claim 4 uses an average particle diameter of 2.0 µm or less as antimony trioxide contained in the molding resin material, so that the contour of the laser irradiation part is clear without blurring. In addition, the surface roughness of the laser irradiation section can be reduced, and particularly excellent smoothness can be obtained, and further, the fall of the Izod impact strength can be suppressed, and sufficient impact characteristics required as a wiring mechanism switch member can be realized.

In addition, the invention described in claims 5 to 7, in addition to the configuration of any one of claims 1 to 4, the plastic pigments of titanium yellow, iron oxide and green as a coloring agent in the molding resin material, the total amount of these components is molded resin By mix | blending so that it may become less than 1 mass% with respect to whole quantity of a material, the color tone of a resin molded article can be adjusted so that brightness may become high further, without reducing the coloring property by laser irradiation.

Claims (7)

A method for producing a wiring mechanism switch member containing an ABS resin or an ABS resin polymer alloy as a resin component and molded from a molding resin material containing at least one transition metal compound selected from copper, nickel and iron and at least one coloring pigment. To As a coloring pigment, on the surface of a resin molded article made of a molding resin material containing carbon black and titanium dioxide at a ratio of 0.001 to 0.02% by mass and 0.1 to 10% by mass relative to the total amount of the molding resin material, By irradiating a YAG laser on the conditions of a power density of 5-40 mA / cm <2> and a pulse width of 70-200 nsec, A surface roughness of the laser irradiator is formed to be 3 mu m or less, and a surface roughness of the non-laser irradiated portion to which the laser is not irradiated is formed to be 0.5 mu m or less. The method of claim 1, A method for producing a wiring mechanism switch member, comprising carbon black contained in a molding resin material having an average particle diameter of 10 to 90 nm. The method according to claim 1 or 2, An antimony trioxide is contained in a molding resin material at a ratio of 0.2 to 0.8 mass% relative to the total amount of the molding resin material. The method of claim 3, wherein An antimony trioxide contained in a molding resin material, the average particle diameter of which is 2.0 µm or less, a method for producing a wiring mechanism switch member. The method according to claim 1 or 2, In the molding resin material, a titanium yellow, trivalent iron oxide, and green plastic pigment as a colorant are blended so that the total amount of these components is within 1 mass% of the total amount of the molding resin material. Manufacturing method. The method of claim 3, wherein In the molding resin material, a titanium yellow, trivalent iron oxide, and green plastic pigment as a colorant are blended so that the total amount of these components is within 1 mass% of the total amount of the molding resin material. Manufacturing method. The method of claim 4, wherein In the molding resin material, a titanium yellow, trivalent iron oxide, and green plastic pigment as a colorant are blended so that the total amount of these components is within 1 mass% of the total amount of the molding resin material. Manufacturing method.