JPH09193293A - Thermoplastic resin molding with metal layer formed on surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a raw material which has good properties as a thin molding material and is easy of surface metallization by forming a metal layer by a dry plating method on the surface of a molding which is molded from a composite material of a specified amount of a thermoplastic resin which does not form an anisotropic melt phase and liquid crystal polyester which can form an anisoropic melt phase. SOLUTION: A metal layer is formed by a dry plating method on the surface of a resin molding which is molded from a composite material of 99-50wt.% a thermoplastic resin which does not form an anisotropic melt phase and 1-50wt. of liquid crystal polyester which can form an anisotropic melt phase. Polycarbonate is preferable as the thermoplastic resin. The liquid crystal polyester has a molecular orientation tendency in a molten state, indicating optical anisotropy. A liquid crystal aromatic polyester and a polyester-amide which have a component selected from an aromatic hydroxycaroxylic acid, an aromatic hydroxyl amine, and an aromatic diamine are used preferably.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a molded product obtained by molding a blended resin of a thermoplastic resin and a liquid crystalline polyester resin and forming a metal layer on the surface thereof. More specifically, it has good fluidity, With high rigidity and excellent weld characteristics, it is possible to obtain thin-walled molded products suitable for automobiles, electrical equipment, office automation equipment, communication equipment, etc., as well as vacuum deposition,
The present invention relates to a resin molded product which can be formed on its surface with a metal layer that can withstand practical use by a general dry plating method such as sputtering or ion plating.

[0002]

2. Description of the Related Art Liquid crystalline polyester is a thermoplastic resin having many characteristics such as high strength, high rigidity, high heat resistance, and easy moldability.
Weld strength is low due to its unique molecular chain orientation, and the surface layer of the molded product peels off, so sufficient plating adhesion cannot be obtained simply by plating, and a plated product that can withstand practical use can be obtained in a simple process. There is a problem such as not. On the other hand, a general thermoplastic resin has a relatively high weld strength and is cheaper than the liquid crystalline polyester, but has the disadvantage that the physical properties such as heat resistance and rigidity are inferior to the liquid crystalline polyester. In particular, since the rigidity and fluidity are insufficient for use in thin-walled housings, it is unavoidable to make it thick in design, so it is necessary to respond to the recent miniaturization and weight reduction of parts in the fields of electric, electronic and communication equipment. There was a limit. In consideration of these problems, the present invention provides a resin molded product having a metal layer formed on the surface thereof, which has a fluidity capable of being sufficiently molded even with a thin wall and a high specific rigidity, and has a plating adhesion that can withstand practical use. The purpose is to do.

[0003]

In view of the above problems, the inventors of the present invention have made earnest investigations and studies on a material having excellent properties as a thin-walled molding material and capable of easily surface metallizing. Surface metalization is easy like conventional thermoplastic resin,
The present invention has been completed by finding a resin composition that can obtain a high value close to that of a liquid crystalline polyester in terms of mechanical strength, heat resistance, and easy moldability of a molded product. That is, the present invention is (a) a thermoplastic resin 99-50 which does not form an anisotropic molten phase.
%, And (b) 1 to 50% by weight of a liquid crystalline polyester capable of forming an anisotropic molten phase, molded into a resin molded product to form a metal layer on its surface by dry plating. It is to provide goods.

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. Examples of the (a) thermoplastic resin that does not form an anisotropic molten phase in the present invention include polyolefin-based (co) polymers such as polyethylene, polypropylene, and poly-4-methyl-1-pentene, polyethylene terephthalate resin,
Polybutylene terephthalate resin, polyester resin such as polycarbonate resin, polyamide polymer, AB
S resin, syndiotactic polystyrene (SPS) resin which is a crystalline polystyrene resin having a syndiotactic structure in which benzene rings are regularly arranged alternately with respect to a main chain synthesized using a metatheron catalyst, and polyarylene Examples thereof include sulfide resins, polyacrylates, polyacetals, and resins mainly containing these. Among these, polyester resins such as polycarbonate resin, polybutylene terephthalate resin, polyethylene terephthalate resin and SPS resin are preferable, and polycarbonate resin having a relatively low molding shrinkage and linear expansion coefficient is particularly preferable.

The liquid crystalline polyester (b) capable of forming an anisotropic molten phase used in the present invention has a molecular orientation in a molten state and exhibits optical anisotropy. In the molecular orientation in this case, the molecules are arranged as a whole in the long axis direction of the molecule and the parallel direction thereof, and this axis and the inclination of the molecule do not necessarily have to match. Observation of the anisotropy in the molten state can be confirmed by a conventional polarization inspection method using a crossed polarizer. More specifically, the anisotropic molten phase can be confirmed by using a Leitz polarizing microscope and observing the molten sample placed on a Leitz hot stage under a nitrogen atmosphere at a magnification of 40 times. When tested between crossed polarizers, the polymers of the present invention transmit polarized light and exhibit optical anisotropy, even in the melt-static state. This can be observed as an optical pattern peculiar to the liquid crystal phase in a certain temperature range when gradually heated. Also, a phase-specific diffraction pattern can be observed in X-ray diffraction. In thermal analysis, a differential scanning calorimeter is generally used to measure entropy change and transition temperature of various phase transitions. Liquid crystalline polymers suitable for use in the present invention tend to be substantially insoluble in common solvents and are therefore unsuitable for solution processing. However, as already mentioned, these polymers can be easily processed by conventional melt processing methods. The polyester exhibiting an anisotropic melt phase used in the present invention is preferably an aromatic polyester and an aromatic polyesteramide,
Polyesters partially containing an aromatic polyester and an aromatic polyesteramide in the same molecular chain are also preferable examples. Particularly preferably, an aromatic hydroxycarboxylic acid,
A liquid crystalline aromatic polyester and a liquid crystalline aromatic polyesteramide having at least one compound selected from the group of aromatic hydroxylamine and aromatic diamine as a constituent component. More specifically, 1) a polyester mainly comprising one or more aromatic hydroxycarboxylic acids and derivatives thereof 2) mainly a) one or more aromatic hydroxycarboxylic acids and derivatives thereof and b) Polyester comprising one or more aromatic dicarboxylic acids, alicyclic dicarboxylic acids and derivatives thereof and c) at least one or two or more aromatic diols, alicyclic diols, aliphatic diols and derivatives thereof 3) Mainly a) One or more aromatic hydroxycarboxylic acids and derivatives thereof and b) One or more aromatic hydroxyamines, aromatic diamines and derivatives thereof and c) Aromatic dicarboxylic acids and fats Polyesteramide comprising one or more cyclic dicarboxylic acids and derivatives thereof 4) Mainly a) aromatic hydroxycarboxylic acids and And b) one or more aromatic hydroxyamines, aromatic diamines and derivatives thereof and c) one or more aromatic dicarboxylic acids, alicyclic dicarboxylic acids and derivatives thereof. Polyester amides comprising two or more and d) at least one or two or more of aromatic diols, alicyclic diols, aliphatic diols and derivatives thereof.

Further, if necessary, a molecular weight modifier may be used in combination with the above components. Preferred examples of specific compounds constituting the liquid crystalline polyester of the present invention are 2,6-naphthalenedicarboxylic acid, 2,6-dihydroquininaphthalene, 1,4
Naphthalene compounds such as -dihydroxynaphthalene and 6-hydroxy-2-naphthoic acid, biphenyl compounds such as 4,4'-diphenyldicarboxylic acid and 4,4'-dihydroxybiphenyl, p-hydroxybenzoic acid, terephthalic acid, hydroquinone, p Para-substituted benzene compounds such as -aminophenol and p-phenylenediamine and their nucleus-substituted benzene compounds (substituents are selected from chlorine, bromine, methyl, phenyl, 1-phenylethyl), isophthalic acid, resorcinol, etc. It is a meta-substituted benzene compound. Preferred examples of the specific compound include naphthalene compounds such as 2,6-naphthalenedicarboxylic acid, 2,6-dihydroxynaphthalene, 1,4-dihydroxynaphthalene and 6-hydroxy-2-naphthoic acid, and 4,4′-diphenyl Dicarboxylic acids, biphenyl compounds such as 4,4′-dihydroxybiphenyl, and the following general formulas (I), (II) and (II)
Compound represented by I):

[0007]

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(Where X is a group selected from alkylene (C ₁ -C ₄ ), alkylidene, —O—, —SO—, —SO ₂ —, —S—, and —CO— Y: — (CH ₂ ) _{n - (n = 1~4),} - O (CH 2) n O- (n = 1~
4) a group selected from). The liquid crystalline polyester used in the present invention may be a polyalkylene terephthalate which does not partially show an anisotropic molten phase in the same molecular chain, in addition to the above-mentioned constituent components. In this case, the alkyl group has 2 to 4 carbon atoms. Among the above-mentioned components, those containing one or more compounds selected from a naphthalene compound, a biphenyl compound and a para-substituted benzene compound as essential components are more preferable examples.
Among the p-substituted benzene compounds, p-hydroxybenzoic acid, methylhydroquinone and 1-phenylethylhydroquinone are particularly preferred examples. Specific examples of the compound having an ester-forming functional group as a constituent component and specific examples of a polyester forming an anisotropic molten phase preferable for use in the present invention are described in JP-B-63-36633. I have. The aromatic polyesters and polyesteramides described above also exhibit a logarithmic viscosity (IV) of at least about 2.0 dl / g, for example, about 2.0 to 10.0 dl / g when dissolved in pentafluorophenol at 0.1% by weight at 60 ° C. Generally shown.

The resin molded product in the present invention is a molded product composed of the above-mentioned (a) thermoplastic resin and (b) liquid crystalline polyester, wherein the liquid crystalline polyester is a matrix phase of the thermoplastic resin with fibers having an aspect ratio of 6 or more. It is preferably microdispersed in shape. As a result, the liquid crystalline polyester serves as a fiber reinforcing material, and the thermoplastic resin can be reinforced, so that a molded article having high rigidity can be obtained. The term "fibrosis" as used herein means to have a fibrous or needle-like structure, and includes a fibrous trunk fiber having a branched fiber structure with respect to the trunk fiber if the aspect ratio is 6 or more. The resin molded product of the present invention is obtained by kneading both with a usual extruder and injection molding, but when the composition ratio of the liquid crystalline polyester is higher than the composition ratio of the thermoplastic resin, the matrix phase is reversed. Therefore, the liquid crystalline polyester is preferably in the range of 1 to 50% by weight with respect to 99 to 50% by weight of the thermoplastic resin.

Further, a molded product in which the liquid crystalline polyester is made into a fiber can be obtained by extrusion molding including a stretching process of a film, a fiber and the like. Furthermore, it exhibits excellent fluidity during molding,
In order to obtain a molded product having high rigidity, it is preferable to add a phosphorus compound. In particular, when the thermoplastic resin is a polycarbonate resin, the liquid crystalline polyester and the polycarbonate resin may not be dispersed in an island shape and may not be formed into fibers even by injection molding, and the effect is remarkable. Examples of the phosphorus compound include phosphides, phosphoric acid compounds, and phosphorous acid compounds. Among them, the phosphorous compound is preferable, and bis (2,6-di-t-butyl-4-) is particularly preferable. Methylphenyl) pentaerythritol, bis (2,4,6-di-t-
It is a pentaerythritol type phosphorous acid compound such as butylphenyl) pentaerythritol. The blending amount of the phosphorus compound is preferably 0.01 to 0.5 parts by weight based on 100 parts by weight of the total of (a) the thermoplastic resin and (b) the liquid crystalline polyester,
It is particularly preferable to add 0.05 to 0.3 part by weight. Particularly, it is preferable to add 1% by weight or more of the contained liquid crystalline polyester. If it is less than 0.01 parts by weight, sufficient fluidity and specific rigidity cannot be exhibited, and if it exceeds 0.5 parts by weight, a large amount of added phosphorus compound gas is generated, which rather impairs mechanical strength and moldability. Become. When the blending amount of the phosphorus compound is within this range, the liquid crystalline polyester is very easily formed into fibers and is formed into fibers regardless of the molding conditions and the shape of the molded product, which is preferable in terms of rigidity.

Next, it is also preferable to mix an inorganic filler in the molded article of the present invention in advance. Here, the inorganic filler is
Glass beads, glass balloons, glass powder, or one or more finely divided inorganic fillers selected from the group consisting of oxides, sulfates, phosphates and silicates of elements of Group 2 or 12 of the periodic table. In particular, one or more selected from the group consisting of oxides, sulfates, phosphates and silicates of elements of Group 2 or Group 12 of the periodic table are preferable. Periodic table group 2 or
Group 12 element oxides are compounds such as magnesium oxide, calcium oxide, barium oxide, zinc oxide,
Phosphate is a compound such as magnesium phosphate, barium phosphate, zinc phosphate, magnesium pyrophosphate, calcium pyrophosphate, etc., Sulfate is a compound such as magnesium sulfate, calcium sulfate, barium sulfate, and silicate is magnesium silicate. , Calcium silicate, talc, wollastonite and the like, and carbonate means a compound such as calcium carbonate, magnesium carbonate, barium carbonate and zinc carbonate. These inorganic fillers are particularly preferably used in the surface treatment method when the molded product is treated with acid or alkali (etching treatment) before the surface metal treatment,
Particularly preferred is a phosphate. The particle size of the inorganic filler is in the range of average particle size 0.01 to 100 μm, preferably 0.1 to 30 μm.
More preferably, 0.5 to 10 μm is suitable. If it is less than 0.01 μm, agglomerates easily occur on the surface of the molded product due to poor dispersion,
If it exceeds 100 μm, the surface roughness after etching becomes large, and a good appearance cannot be obtained.

A fibrous inorganic material is also preferable as the inorganic filler, and the fibrous inorganic material may be used alone or in combination with the finely powdered inorganic filler. As the fibrous filler, glass fiber, milled glass fiber, carbon fiber,
Asbestos fiber, silica fiber, silica-alumina fiber,
Inorganic fibrous substances such as alumina fibers, zirconia fibers, boron nitride fibers, silicon nitride fibers, boron fibers, potassium titanate fibers, and fibrous materials of metals such as stainless steel, aluminum, titanium, copper, and brass can be used. Particularly, glass fiber and milled glass fiber are preferable. The shape of these fibrous inorganic materials is 0.1 to 30 μm in diameter and 5 μm in average length.
It is preferably in the range of ˜1 mm, especially 10 to 300 μm. As the inorganic filler used in the present invention, a known surface treating agent can be used in combination depending on desired physical properties. Examples thereof include functional compounds such as epoxy compounds, isocyanate compounds, titanate compounds, and silane compounds. It is preferably treated with a compound other than an amino compound such as an epoxy compound or a polyamide compound. These fillers may be used after being surface-treated in advance, or may be added at the same time when the material is prepared. The blending amount of these inorganic fillers is 1 to 200 parts by weight, preferably 20 to 100 parts by weight, based on 100 parts by weight of the total of (a) the thermoplastic resin and (b) the liquid crystalline polyester. If it exceeds 200 parts by weight, the fluidity of the resin is lowered, a molded product having a good surface cannot be obtained, and at the same time, the mechanical strength of the molded product is also unfavorably decreased. If the total amount of the finely powdered inorganic filler and the fibrous inorganic material exceeds 200 parts by weight, it is not preferable in terms of moldability and various physical properties.

Next, the present invention is obtained by subjecting a molded article made of the above resin composition to a surface metal treatment. The surface metal treatment is a dry metal (plating) treatment method using a vacuum system. Specifically, it refers to a method of directly forming a metal layer on a resin molded product by any one of sputtering, ion plating or vacuum deposition. In the present invention, it is preferable to treat the molded product with an acid or an alkali (etching treatment) before the surface metal treatment in order to improve the plating adhesion. This etching treatment is a treatment with an acidic aqueous solution, an alkaline aqueous solution, or a homogeneous mixed solution of the aqueous solution and alcohol, and particularly, an aqueous solution containing an alkali metal hydroxide or an alkaline earth metal hydroxide as a main component, that is, water. Aqueous solutions of sodium oxide and potassium hydroxide are preferred. In the case of treating, a preferable treatment condition is using a 30 to 50% by weight hydroxide aqueous solution at 40 to 60 ° C. for 3 to 20 minutes. As an example of particularly preferable treatment conditions, it is suitable to treat with a 40% by weight aqueous solution of potassium hydroxide at 60 ° C. for about 5 minutes. The etched molded product is immersed in dilute hydrochloric acid or dilute sulfuric acid for the purpose of neutralizing the alkaline aqueous solution on the surface and removing the inorganic filler remaining on the surface, and then thoroughly rinsing with water and ultrasonic cleaning if necessary. It is preferable to dehydrate and dry with hot air at 100 ° C. or higher, a vacuum dryer or the like.

In addition to wet etching, ion bombardment treatment is also preferable as the etching treatment to be carried out in vacuum from the beginning, and it may be used in combination with wet etching treatment. This ion bombardment treatment physically etches a molded product with particles having energy in a vacuum chamber, and is classified into plasma etching, sputter etching and ion etching depending on the treatment method. Here, plasma etching refers to the following processing method. That is, in the plasma processing apparatus, after the processing tank is evacuated to about 1 × 10 ⁻⁵ Torr, a small amount of gas is introduced (flow rate: 50 SCCM), for example, high frequency (radio wave: 13.56 M
Hz) Electrodes excite gas atoms to generate plasma. By exposing the molded product to this plasma atmosphere, the surface of the molded product is attacked by the plasma and the surface is physically roughened. Similarly, using a sputtering device, a small amount of inert gas is introduced into the vacuum chamber, a high frequency or a direct current high voltage is applied, and the impact when the inert gas cations generated by discharging and attracting and colliding with the cathode are generated. The method of etching a molded product by utilizing it is called sputter etching, and the case of using an ion plating device is called ion etching. Further, as described in JP-A-57-51726, a thermoplastic organic solvent-soluble cellulose-based primer can be applied before applying the base coat. Further, specifically as a thin-walled molded product formed by molding such a resin material,
Examples thereof include thin-walled connectors, personal computer housings, mobile phone housings, FDD or HDD components, and the like. Preferably, a thin-walled molded product in which 50% or more of the thickness of the molded product is 1 mm or less is preferable.

[0015]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.
The evaluation in the examples was performed under the following conditions. Flexural modulus and Izod impact strength are ASTM D 790 and AS, respectively.
Measured according to TMD 256. The melt viscosity of the pellets was measured by using a Toyo Seimitsu Co., Ltd. Capillograph with a capillary of φ1 × 10 L, and the matrix was polycarbonate resin at 300 ° C, and the matrix was polybutylene terephthalate resin at 270 ° C. speed
It was measured at 1200 sec ^-1 . Regarding the weld strength, the weld tensile strength was measured using a dumbbell piece having a weld formed in the center by molding with a two-point gate from both ends of the molded product. Further, the average aspect ratio (length / thickness) of LCP was obtained by cutting the test piece used in the measurement of bending elastic modulus so that a plane parallel to the flow direction was exposed, and then polishing the cross section of the surface. It was observed and evaluated by an electron microscope. That is, the length / thickness of 50 arbitrarily selected fiberized LCPs were measured and the average value was calculated. Regarding the length, the length that can be observed on the surface was measured. The results are indicated by ◯ when the average aspect ratio is 6 or more, and by x when the average aspect ratio is less than 6. The cross-cut test was conducted in accordance with JIS J 5400 (cross-cut tape method), which is an evaluation method for coating, and was expressed by the number of peeled eyes. Moisture and heat resistance is a plated flat plate (120 x 120
The sample was placed in a thermo-hygrostat for 2 hours, left at 85 ° C. and 85% RH for 96 hours, and then evaluated for swelling of the plated surface. Plates and weld strength test pieces used for plating are molded using a mold with a gate size of 2 × 5 at a cylinder temperature of 300 ° C when the matrix is a polycarbonate resin and a cylinder temperature of 270 ° C when the matrix is a polybutylene terephthalate resin. did.

Examples 1 to 9 Polycarbonate resin (Upilon H3000 manufactured by Mitsubishi Gas Chemical Co., Inc.) in the amounts shown in Table 1 and a liquid crystalline polyester resin described below, and a phosphite ester [bis (2,6-di-t] −
Butyl-4-methylphenyl) pentaerythritol-
Diphosphite] was prepared and melt-kneaded at a resin temperature of 300 ° C. in a 30 mm twin-screw extruder to form pellets. Next, the pellets were molded with an injection molding machine at a molding temperature (indicating a cylinder setting temperature) of 300 ° C., and the above evaluation was performed. The results are shown in Table 1.

Comparative Examples 1-10 As shown in Table 2, polycarbonate resin, liquid crystalline polyester resin or polybutylene terephthalate (PBT)
A molded article made only of a resin (DX-2000 manufactured by Polyplastics Co., Ltd.) was evaluated in the same manner as in the above-mentioned Examples.
Table 2 shows the results. The extrusion temperature of PBT resin is 290 ℃
And

Examples 10 to 19 and Comparative Example 11 PBT resin, liquid crystalline polyester resin, and molded articles made of compositions containing inorganic fillers were subjected to various pretreatments shown in Table 3, and the like. The evaluation was performed in the same manner as in the above example. The results are shown in Table 3. The etching condition here is that it was treated with 8 mol / l KOH at 50 ° C. for 10 minutes, and bombarding was performed by ionizing Ar gas with a pressure of 3.0 Pa by thermionic emission. For the primer treatment, BP-50 primer manufactured by Toyo Kogyo Co., Ltd. was spray-painted and heat-cured at 120 ° C. for 1 hour. Example 20 Using the pellets obtained in Example 13, a film having a thickness of 50 μm was produced by a T-die film molding machine, and a cross-cut test and wet heat resistance were evaluated. The results are shown in Table 3. still,
The liquid crystalline polyester resin used in the examples has the following constitutional units.

[0019]

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[0020]

[Table 1]

[0021]

[Table 2]

[0022]

[Table 3]

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C08K 3/30 KKH C08K 3/30 KKH 3/32 3/32 KJS KJS C08L 67/02 LPD C08L 67 / 02 LPD 67/03 LPE 67/03 LPE 69/00 LPR 69/00 LPR H05K 9/00 H05K 9/00 D // C23C 14/20 C23C 14/20 Z

Claims (14)

[Claims] 1. A composite material of (a) 99-50% by weight of a thermoplastic resin that does not form an anisotropic melt phase and (b) 1-50% by weight of a liquid crystalline polyester that can form an anisotropic melt phase. A resin molded product obtained by forming a metal layer on the surface of the molded resin molded product by dry plating. 2. A liquid crystalline polyester (b) which is a matrix, and (a) is present in the form of fibers having an aspect ratio of 6 or more in a thermoplastic resin which does not form an anisotropic molten phase. Item 1. A resin molded product having a metal layer formed on the surface thereof. 3. The resin molded article having a metal layer formed on the surface according to claim 1 or 2, wherein the thermoplastic resin (a) is a polyester resin. 4. The resin molded article having a metal layer formed on the surface according to claim 3, wherein the thermoplastic resin (a) is a polycarbonate resin. 5. A phosphorus compound is further added to 100 parts by weight of a total of (a) a polycarbonate resin and (b) a liquid crystalline polyester.
The resin molded product according to claim 4, wherein a metal layer is formed on the surface of the resin molded product obtained by molding a composite material containing 0.01 to 0.5 parts by weight by a dry plating method. 6. An inorganic filler is further used as (a) a thermoplastic resin.
(b) 1 to 100 parts by weight of liquid crystalline polyester in total
A resin molded product having a metal layer formed on the surface according to any one of claims 1 to 5, which is blended in an amount of 200 parts by weight. 7. The inorganic filler is an oxide, a sulfate, a phosphate, a silicate of a group 2 or 12 element of the periodic table, or an element of aluminum, silicon, tin, lead, antimony or bismuth and an oxide thereof. 7. A resin molded product having a metal layer formed on the surface according to claim 6, which is one or more finely divided inorganic fillers selected from the group consisting of 8. The resin molded product having a metal layer formed on the surface according to claim 7, wherein the inorganic filler is calcium pyrophosphate. 9. The resin molding in which a metal layer is formed on the surface according to any one of claims 1 to 8, wherein the dry plating method is any one of vacuum deposition, sputtering and ion plating. Goods. 10. The surface of the resin molded product is roughened by wet etching with an acid or alkali aqueous solution in advance, and then dry plating is performed, whereby a metal layer is formed on the surface of the resin molded product. Formed resin molded product. 11. The surface of the resin molded product is subjected to ion bombardment and then dry plating is performed.
A resin molded product having a metal layer formed on the surface according to any one of 0. 12. The method according to claim 1, wherein the surface of the resin molded product is coated with a primer coating, and then dry plating is performed.
10. A resin molded product having a metal layer formed on the surface according to any one of 10 to 10. 13. A resin molded article having a metal layer formed on the surface according to claim 1, which is a structure of a housing, a connector, a CD pickup component or a mechanical component for a digital disc. 14. A resin molded article having a metal layer formed on the surface according to claim 1, which is a film, a sheet or a fiber.