KR20230000159A - Plastic parts and method for manufacturing the same - Google Patents

Abstract

Disclosed are a plastic part that exhibits excellent decorative feeling and luxurious design patterns, solves the problem of peeling between a printing layer and a metal layer, and has excellent reliability, and a method for manufacturing the same. The plastic part manufacturing method according to the present invention comprises: a step (a) of preparing a base material; a step (b) of forming a printing layer on the base material; a step (c) of forming a metal layer by vacuum deposition of metal on the printing layer; and a step (d) of forming a protective layer on the metal layer, wherein the metal layer is formed in a semi-dried state of the printed layer.

Description

Plastic parts and manufacturing method thereof {PLASTIC PARTS AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a plastic part in which metal is vacuum deposited in a state in which a printed layer is semi-dried, and a manufacturing method thereof.

Plastic parts made of synthetic resin are widely used in automobile interiors and exteriors and various home appliances.

In particular, plastic parts are widely used as interior and exterior materials to finish or decorate the surface of various interior products, console boxes, dashboards, door trims, and exterior garnish of automobiles. there is.

Plastic parts are manufactured to have a metal pattern or a metal pattern in order to present a sense of decoration and various designs. For example, a plastic part may be manufactured by sequentially forming a metal layer and a printing layer on a base material, forming patterns and patterns using etching or laser irradiation, and forming a protective layer.

However, in the case of forming metal patterns and patterns using etching or laser irradiation, the appearance of the injection molding product is flat or only possible on a small area, and the etching process is complicated and the cost is increased, resulting in poor economic efficiency.

In particular, by forming the printed layer on the metal layer, there are also problems in that adhesion between interfaces is low, peeling occurs, reliability is lowered, and decorativeness is lowered.

Accordingly, there is a need for research on plastic parts capable of imparting excellent decorativeness and luxurious design patterns through a simple process, and improving peeling problems and reliability.

An object of the present invention is to provide a plastic part capable of exhibiting an excellent decorative feeling and a luxurious design pattern.

Another object of the present invention is to provide a plastic part capable of solving the problem of peeling between a printed layer and a metal layer.

Another object of the present invention is to provide plastic parts with excellent reliability.

Another object of the present invention is to provide a method for manufacturing a plastic part that is simple in process and can reduce manufacturing cost.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

A method of manufacturing a plastic part according to the present invention includes the steps of (a) preparing a base material; (b) forming a printing layer on the base material; (c) forming a metal layer by vacuum depositing a metal on the printed layer; and (d) forming a protective layer on the metal layer, wherein the metal layer is formed in a semi-dried state of the printed layer.

The print layer may be semi-dried at 40 to 90° C. for 20 to 60 minutes, and Equation 1 below may be satisfied.

[Equation 1]

80 ≤ drying temperature (℃) Χ drying time (minutes) ≤ 420

A plastic part according to the present invention includes a base material; a printed layer disposed on the base material; a metal layer disposed on the printed layer; and a protective layer disposed on the metal layer.

The plastic parts according to the present invention can exhibit excellent decorative feeling and luxurious design patterns according to printed patterns and metal deposition.

In addition, the plastic part of the present invention can solve the problem of peeling between the printed layer and the metal layer, and has an effect of excellent reliability.

In addition, the manufacturing method of the plastic part of the present invention has a simple process and can reduce manufacturing cost.

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a flow chart showing a method for manufacturing a plastic part according to the present invention.
2 is a cross-sectional view of a state in which a printing layer is formed on a base material according to the present invention.
FIG. 3 is a cross-sectional view of a plastic part in which a metal layer and a protective layer are formed on the printed layer shown in FIG. 2 .
4 is a plan view of a state in which a metal layer is formed in a state in which a printed layer is semi-dried and completely dried.
5 is a cross-sectional view of a plastic part in which a primer layer is further disposed between a base material and a printing layer.
6 is a simulation result of temperature and time, which are semi-drying conditions of a printed layer, for an adhesion test.
7 shows adhesion simulation results when the temperature is 90° C. and the time is 20 minutes.
8 shows adhesion simulation results when the temperature is 70° C. and the time is 20 minutes.
9 shows adhesion simulation results when the temperature is 40° C. and the time is 20 minutes.
10 shows adhesion simulation results at a temperature of 40° C. and a time of 60 minutes.
11 shows adhesion simulation results at a temperature of 70° C. and a time of 60 minutes.
12 is an exterior photograph according to Examples 1 and 2.
13 is a photograph of a state in which surface peeling occurred according to Comparative Example 1.

The above objects, features and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs will be able to easily implement the technical spirit of the present invention. In describing the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Hereinafter, the arrangement of an arbitrary element on the "upper (or lower)" or "upper (or lower)" of a component means that an arbitrary element is placed in contact with the upper (or lower) surface of the component. In addition, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Hereinafter, plastic parts and manufacturing methods thereof according to some embodiments of the present invention will be described.

The plastic parts of the present invention can exhibit excellent decorativeness and luxurious design patterns according to printed patterns and metal deposition, can solve the problem of peeling between printed layers and metal layers, and have excellent reliability.

In order to achieve all of these effects, it is not solved by changing only the arrangement order of the printed layer and the metal layer, but the semi-drying condition of the printed layer must be satisfied in the manufacturing method.

A detailed description of the manufacturing method of the plastic parts of the present invention is as follows.

1 is a flow chart showing a method for manufacturing a plastic part according to the present invention.

Referring to FIG. 1 , the method of manufacturing a plastic part of the present invention includes preparing a base material (S110), forming a printed layer (S120), vacuum depositing a metal to form a metal layer (S130), and protecting A step of forming a layer (S140) is included.

Plastic parts are made using thermoplastic resin or thermosetting resin, which is a polymer compound made by combining raw materials extracted from petroleum, and can be applied to all fields where plastic can be used, such as home appliances, furniture, and automobile interior materials.

In particular, the plastic parts of the present invention can be applied to automobile interior and exterior materials.

In the step of preparing the base material, the base material 10 is a plastic material and refers to an injection-molded material.

The base material is polycarbonate (PC), polyurethane (PU), polypropylene (PP), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), ABS resin (acrylonitrile butadiene styrene resin), polyvinyl chloride (PVC), polybutylene terephthalate (PBT), polyethylene (PE), polyamide (PA) and PC/ABS blend One or more of resins (polycarbonate/acrylonitrile butadiene styrene) may be included.

Injection molding is a technology commonly used in industrial settings that melts a resin material, pours it into a mold, and hardens it to produce an injection molded product.

Between the step of preparing the base material 10 and the step of forming the printed layer 20 on the base material 10 to be described later, a pretreatment step of removing foreign substances from the surface of the base material 10 may be further included. there is.

A pretreatment step may be performed using thinner or/and IPA solvent as a degreasing process prior to painting. By further including a pretreatment step, it is possible to remove foreign substances and create a non-greasy surface so that the print layer or the metal layer adheres well to the surface of the base material.

2 is a cross-sectional view of a state in which a printing layer is formed on a base material according to the present invention.

As shown in FIG. 2 , a printed layer 20 is formed on the base material 10 .

The reason why the printed layer 20 is directly formed on the base material 10 is that an image pattern can be given to a plastic part without performing etching or laser irradiation in terms of the process, and the problem of separation from the metal layer to be described later can be solved. because there is

In the step of forming the print layer, it is preferable to perform pad printing or silk screen.

Pad printing is a method of printing directly on a product using an elastic pad having elasticity such as rubber or silicon. In pad printing, when you want to print an image pattern or color on a specific location of a printed object, ink is smeared on a corrosion plate imprinted with the image pattern or a color plate on which the color is accumulated, and the ink accumulated on the image pattern or color plate imprinted on the corrosion plate. is transferred to an elastic pad, and then the elastic pad is pressed to the object (injection molded product) to transfer the image pattern or color.

In the silk screen, liquid ink is applied on a screen having a pattern, and appropriate pressure is applied while applying with a squeegee or the like so that the ink passes through only the unblocked portion of the screen and is applied.

When the printing layer is formed by performing pad printing or silk screen, it is possible to precisely print on the flat, curved, concave surface or wide area of the base material, and the desired image pattern and color can be printed at the desired location. there is.

On the other hand, when the printing layer is performed by hydraulic transfer, the desired image pattern is printed at the desired location because the water and the transfer film are used to settle the object to be printed from the upper part of the transfer film and the pattern is printed on the surface of the object by the water pressure. There are downsides to doing it. In addition, when metal is deposited on the hydraulic transfer layer, there is a disadvantage in that the pattern of hydraulic transfer does not appear due to the metal deposition.

Accordingly, it is preferable to use pad printing or silk screen in order to precisely print on the base material, print desired image patterns and colors at desired locations, and improve the texture of the design surface.

The ink used in the printing layer 20 includes acrylic resin, epoxy resin, and colored pigment as main components, and may further include one or more additives selected from among light stabilizers, antioxidants, quenchers, and catalysts. no.

FIG. 3 is a cross-sectional view of a plastic part in which a metal layer and a protective layer are formed on the printed layer shown in FIG. 2 .

As shown in FIG. 3 , after forming the metal layer 30 by vacuum depositing a metal on the printed layer 20 , the protective layer 40 is formed.

In order to solve the surface peeling between the printed layer 20 and the metal layer 30, it is important to form the metal layer 30 in a semi-dried state of the printed layer 20.

When the metal layer 30 is formed in a state in which the printed layer 20 is completely dried, the bonding force between the printed layer and the metal layer is weakened, resulting in peeling.

Here, complete drying means that the solvent is completely removed by performing at 80 to 90 ° C. for 30 to 120 minutes under general drying conditions.

Semi-drying referred to in the present invention means removing about 40 to 80% of the solvent by performing the drying at a lower temperature and for a shorter time than general drying conditions.

Also, the semi-dry state means a state in which ink does not stick to the hand.

4 is a plan view of a state in which a metal layer is formed in a state in which a printed layer is semi-dried and completely dried.

As shown in FIG. 4 , in a state in which the printed layer is semi-dried, the metal is well adhered to the pattern line of the printed layer as well. On the other hand, in a state in which the printed layer is completely dried, the metal is not well adhered to the pattern line of the printed layer.

That is, compared to when the printed layer is completely dried, when the printed layer is semi-dried, it provides an excellent adhesive effect without surface peeling between the printed layer and the metal layer, and thus has an advantage suitable for application to automobile parts.

Also, when the printed layer 20 is semi-dried, the adhesive force between the patterned surface of the printed layer 20 and the metal layer 30 may be greater than the adhesive force between the non-patterned surface and the metal layer.

Here, non-patterned surfaces refer to unprinted surfaces.

In the present invention, in order to solve the surface peeling, the print layer 20 is semi-dried at 40 to 90 ° C. for 20 to 60 minutes, and it is preferable to satisfy the following formula 1.

[Equation 1]

80 ≤ drying temperature (℃) Χ drying time (minutes) ≤ 420

The technical significance of these parameters is described as follows.

In general, in the field of plastic parts, after forming a printed layer on a metal layer, etching or laser irradiation is performed to show patterns and patterns. there was.

As peeling occurs, the reliability of plastic parts deteriorates, and there is also difficulty in displaying luxurious design patterns.

In order to solve this problem, the present inventors have selected the order of forming the metal layer on the printed layer. In addition, it was confirmed that the pattern and pattern effect were equal to or higher than the existing physical properties without irradiation of etching or laser.

In order to evaluate the peeling problem, in the process of forming the metal layer on the printed layer, the existing complete drying condition was applied as it is.

In general, it is known that the higher the drying temperature and the longer the drying time in the printing process, the more complete drying is achieved and the higher the adhesion, so that peeling can be reduced.

After the printing layer was completely dried, a metal layer was formed, but it was confirmed that surface peeling occurred as the ink was completely dried and the adhesive force with the metal layer was weakened.

In order to solve the peeling problem, the present inventors adjusted the temperature and time of the drying condition so that the surface peeling between the printed layer and the metal layer was not made.

As a result of these studies, the present inventors can show a luxurious design pattern with a simple process by the arrangement order of the printed layer and the metal layer, and can secure excellent adhesion of the metal layer by the semi-drying condition of the printed layer, thereby securing conventional plastic parts. It was confirmed that all of these problems were rectified.

Therefore, in the present invention, in order to present an excellent decorative feeling and a luxurious design pattern, solve the problem of peeling between the printed layer and the metal layer, and develop a plastic part having excellent reliability, the printed layer is heated at 40 to 90 ° C for 20 to 60 minutes. While semi-drying to form a metal layer, it is preferable that the semi-drying condition satisfies Equation 1 below.

[Equation 1]

80 ≤ drying temperature (℃) Χ drying time (minutes) ≤ 420

After half-drying the print layer 20, a pretreatment step of removing foreign substances on the surface may be further included. As the solvent used for the pretreatment, IPA may be mainly used, as described above.

In the forming of the metal layer, inert gases and metal particles ionized in a plasma atmosphere inside the vacuum chamber may be uniformly deposited on the print layer 20 .

For example, ion plasma deposition may be performed under conditions such as an energy of 0.1 to 10 eV and a deposition rate of 0.1 to 100 μm/min, but is not limited thereto.

By forming the metal layer using such vacuum deposition, there is an effect of excellent productivity and uniformity and precision of the metal thin film. In addition, since all evaporated metals are deposited, there is no wastewater and no harmful substances are discharged, so there is an eco-friendly effect.

During the formation of the metal layer 30 , a metal may be vacuum deposited between the patterns of the printed layer 20 and on the upper surface of the pattern. In the process of vacuum depositing the metal, the metal may be preferentially deposited on the non-pattern surface, and the metal may be deposited on the upper surface of the pattern to cover the printed pattern.

The metal layer 30 may include aluminum (Al), stainless steel, tin (Sn), indium (In), magnesium (Mg), copper (Cu), nickel (Ni), titanium (Ti), chromium (Cr) ), silver (Ag), and iron (Fe).

The metal layer 30 may be formed to a thickness of about 5 to 1000 nm, preferably about 5 to 500 nm, but is not limited thereto.

The protective layer 40 serves to protect the surface of the metal layer 30 and adjust gloss.

In addition, the protective layer 40 improves the appearance of plastic parts to increase marketability, protects the metal layer from being damaged by providing light resistance, chemical resistance, and scratch resistance, and is colorless and transparent to transmit light, and has a glossy gloss effect and ultraviolet rays Provides a blocking effect.

The protective layer 40 is also called a clear coating layer, and may be formed by applying a glossy, semi-glossy, or matte clear composition.

The protective layer 40 may include at least one of a vinyl resin, an epoxy resin, a polyurethane resin, an acrylic resin, an isocyanate resin, and a polyol resin, and may further include a dispersant, a photoinitiator, a UV stabilizer, and the like.

The protective layer 40 may be formed to a thickness of 10 to 50 μm, preferably 20 to 40 μm, but is not limited thereto.

5 is a cross-sectional view of a plastic part in which a primer layer is further disposed between a base material and a printing layer.

As shown in FIG. 5, between the pretreatment step of removing foreign substances on the surface of the base material 10 and the step of forming the printed layer 20 on the base material 10, the primer is applied to the pretreated surface of the base material. A further step of forming layer 15 may be included.

The primer layer 15 may further improve adhesion between the base material 10 and the printed layer 20 . The primer layer 15 may be formed by applying a vinyl resin, an epoxy resin, a polyurethane resin, an acrylic resin, or the like.

The plastic part of the present invention includes a base material 10, a printed layer 20 disposed on the base material 10, a metal layer 30 disposed on the printed layer 20, and a protection disposed on the metal layer 30. Layer 40 is included.

A metal layer 30 may be disposed between the patterns of the printed layer 20 and on the upper surface of the pattern.

Between the patterns indicates the unpatterned surface.

Adhesion between the patterned surface of the printed layer 20 and the metal layer may be greater than adhesion between the non-patterned surface and the metal layer. This means that since the metal deposition is performed while the printed layer 20 is semi-dried, the adhesive force on the surface of the printed pattern is relatively high.

As described above, a primer layer 15 may be further disposed between the base material 10 and the printed layer 20 .

As the metal layer is disposed on the printed layer, the plastic part of the present invention has a plant pattern such as a circular or polygonal pattern, a cylinder or polygonal column pattern, a grid pattern, a stripe pattern, a dot pattern, a mosaic pattern, a dobby pattern, or a flower pattern. It can represent three-dimensional patterns such as patterns, various animal patterns, character patterns, and three-dimensional patterns, and can represent excellent decorative and luxurious design patterns. In addition, the plastic part can exhibit excellent reliability without surface peeling.

As described above, a specific embodiment of the plastic part and its manufacturing method is as follows.

1. Adhesion evaluation

The tape peel test was evaluated according to ISO 2409 or JIS K 5600-5-6. After firmly attaching the prescribed tape JIS Z 1522, pull the tape in a 90° direction to remove it.

The criterion for judgment is as follows. When between M1.0 and M2.5, peeling did not occur and the adhesiveness was evaluated to be excellent.

[Table 1]

6 is a simulation result of temperature and time, which are semi-drying conditions of a printed layer, for an adhesion test. After forming the ink layer by pad printing on the injection-molded plastic material, the drying temperature and drying time were adjusted.

It can be seen from FIG. 6 how temperature and time affect the peeling evaluation.

In the main effect graph, the Y result value shows more than 2.5 at the temperature of 40 ~ 90 ℃, and it shows a tendency to increase as the temperature increases. From 20 to 120 minutes, as the time increases, the Y result value tends to increase with a constant slope.

The interaction graph shows the result of applying temperature and time together.

When the temperature was 40 ℃, 70 ℃, 90 ℃, the Y result value was different depending on the time.

When the temperature was 40 ° C to 70 ° C and the drying time was 20 to 60 minutes, the Y value showed M2.5 or less. It can be expected that surface peeling will not occur.

Even when the drying time was 20 minutes at a temperature of 70 ° C to 90 ° C, the Y value showed M2.5 or less.

Conversely, when the drying time is 120 minutes at 40 ° C to 90 ° C, and when the drying time is 60 minutes at more than 70 ° C to less than 90 ° C, peeling problems can be expected to occur because the Y value exceeds M2.5 .

Based on these results, adhesion simulations were performed according to the drying temperature and drying time of the printed layer. 7 to 11 are the results of applying both the drying temperature and the drying time. 7 is when the temperature is 90 ° C and the time is 20 minutes, FIG. 8 is when the temperature is 70 ° C and the time is 20 minutes, FIG. 9 is when the temperature is 40 ° C and the time is 20 minutes, FIG. is the adhesion simulation result when the temperature is 70 ℃ and the time is 60 minutes.

The simulation predicted value y was derived for the target value of the Y axis, and the red solid line is displayed at the corresponding temperature and time.

7 to 11, M1.0 to M2 when semi-drying conditions of 90°C Χ 20 minutes, 70°C Χ 20 minutes, 40°C Χ 20 minutes, 40°C Χ 60 minutes, and 70°C Χ 60 minutes are satisfied. represents .5.

Example 1

An injection-molded plastic base material was prepared, and the surface of the material was degreased with IPA and foreign substances were removed.

A printed layer is formed using ink containing acrylic resin, epoxy resin and carbon black pigment, and pad printing, and Al and Cu are formed in a vacuum ion plasma atmosphere (5 eV energy) in a semi-dried state at 40 ° C. for 60 minutes. Deposited to form a metal layer.

Subsequently, a plastic part was manufactured by coating a composition containing a vinyl resin as a main component on the metal layer, and then irradiating 500 mJ/cm ² ultraviolet rays to form a protective layer.

Example 2

A plastic part was manufactured under the same conditions as in Example 1, except that the printing layer was formed using a silk screen.

Comparative Example 1

A plastic part was manufactured under the same conditions as in Example 1, except that the print layer was completely dried at 90° C. for 60 minutes.

Comparative Example 2

An injection-molded plastic base material was prepared, and the surface of the material was degreased with IPA and foreign substances were removed.

After forming the metal layer first by vacuum deposition, it was etched after exposure using a photoresist.

Subsequently, a printed layer was formed on the etched metal layer using pad printing, and completely dried at 90° C. for 60 minutes.

Subsequently, a plastic part was manufactured by applying a composition containing a vinyl resin as a main component to form a protective layer.

Comparative Example 3

An injection-molded plastic base material was prepared, and the surface of the material was degreased with IPA and foreign substances were removed.

A pattern was printed on the surface of the material by hydraulic transfer using a transfer film having a predetermined pattern in a water bath, and completely dried at 90 ° C. for 60 minutes.

Subsequently, a metal layer was formed by depositing Al and Cu in a vacuum ion plasma atmosphere.

Subsequently, a plastic part was manufactured by applying a composition containing a vinyl resin as a main component to form a protective layer.

Table 2 below shows the results of confirming the occurrence of peeling and the decorative feeling and design pattern of Examples 1 and 2 and Comparative Examples 1, 2 and 3.

Whether or not peeling occurred was marked with "O" if peeling occurred between the printed layer and the metal layer when observed with the naked eye based on the criterion of Table 1, and "X" if peeling did not occur. When observed with the naked eye, the decoration and design patterns were marked as “excellent” if the pattern formation was clear and the three-dimensional effect and color harmonized well, and “insufficient” if the pattern formation was crushed, looked flat, and the colors were not harmonious.

[Table 2]

Referring to Table 2 and FIG. 12 , it can be confirmed that by satisfying the manufacturing method of the plastic part of the present invention, there is no peeling, and a decorative feeling and a luxurious design pattern can be displayed.

On the other hand, in Comparative Example 1, peeling occurred because the printed layer was completely dried, and in Comparative Example 2, peeling occurred because the printed layer was formed on the metal layer.

13 is a photograph of a state in which surface peeling occurred according to Comparative Example 1.

Referring to FIG. 13, it is shown that surface peeling occurs by forming a metal layer after completely drying the printed layer.

In Comparative Example 3, peeling did not occur when observed with the naked eye, but decorativeness and design patterns were insufficient due to hydraulic transfer.

As described above, the present invention has been described with reference to the drawings illustrated, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and various modifications are made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that variations can be made. In addition, although the operational effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be recognized.

10: base material
15: primer layer
20: printing layer
30: metal layer
40: protective layer

Claims (12)

(a) preparing a base material;
(b) forming a printing layer on the base material;
(c) forming a metal layer by vacuum depositing a metal on the printed layer; and
(d) forming a protective layer on the metal layer;
A method of manufacturing a plastic part in which a metal layer is formed in a state in which the printed layer is semi-dried.
According to claim 1,
In the step of forming the printing layer, pad printing or silk screen is performed.
According to claim 1,
Method for producing a plastic part that satisfies the following formula 1 while semi-drying the print layer at 40 to 90 ° C. for 20 to 60 minutes.
[Equation 1]
80 ≤ drying temperature (℃) Χ drying time (minutes) ≤ 420
According to claim 1,
In the forming of the metal layer, inert gases and metal particles ionized in a plasma atmosphere inside a vacuum chamber are deposited on the printed layer.
According to claim 1,
In the step of forming the metal layer, a method of manufacturing a plastic part in which a metal is deposited between the patterns of the printed layer and on the upper surface of the pattern.
According to claim 1,
Between the (a) preparing a base material and (b) forming a printed layer on the base material,
The method of manufacturing a plastic part further comprising: (a1) a pretreatment step of removing foreign substances on the surface of the base material.
According to claim 6,
Between the (a1) pretreatment step of removing foreign substances on the surface of the base material and (b) the step of forming a printed layer on the base material,
The method of manufacturing a plastic part further comprising: (a2) forming a primer layer on the surface of the pretreated base material.
base material;
a printed layer disposed on the base material;
a metal layer disposed on the printed layer; and
A plastic part comprising a protective layer disposed on the metal layer.
According to claim 8,
A plastic part in which a metal layer is disposed between the patterns of the printed layer and on the upper surface of the pattern.
According to claim 8,
Adhesion between the patterned surface of the printed layer and the metal layer is greater than adhesion between the non-patterned surface and the metal layer.
According to claim 8,
A plastic part further comprising a primer layer disposed between the base material and the printed layer.
According to claim 8,
The base material is polycarbonate (PC), polyurethane (PU), polypropylene (PP), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), ABS resin (acrylonitrile butadiene styrene resin), polyvinyl chloride (PVC), polybutylene terephthalate (PBT), polyethylene (PE), polyamide (PA) and PC/ABS blend Plastic parts containing one or more of the resins (polycarbonate/acrylonitrile butadiene styrene).

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