KR20200098986A - Reflector made from pellet for reflector injection molding comprising polymer matrix and ceramic particles and method for producing the same - Google Patents

Abstract

The present invention relates to a reflector manufactured from pellets for injection molding of a reflector including a polymer matrix and a ceramic particle, and to a manufacturing method thereof. The pellets for injection molding of a reflector of the present invention have excellent thermal conductivity, injection flowability, the injection molding property, and heat dissipation performance so as to be used to manufacture a reflector.

Description

Reflector made from pellet for reflector injection molding comprising polymer matrix and ceramic particles and method for producing the same}

The present invention relates to a reflector manufactured from pellets for injection molding of a reflector including a polymer matrix and ceramic particles, and a method of manufacturing the same.

Vehicles are equipped with various vehicle lamp modules that have a lighting function for easily identifying objects located around the vehicle during night driving and a signal function for informing other vehicles or road users of the driving state of the vehicle. For example, among vehicle lamp modules, headlamps and fog lights are used for lighting functions, and turn signals, tail lights, brake lights and vehicle width lights are used for signal functions.

The headlamp has an essential function of securing a driver's view at night by irradiating light in the same direction as the driving direction of the vehicle. In such a vehicle headlamp module, an incandescent lamp and a halogen lamp module are mainly used as light sources for irradiating light, and recently, an LED having low power consumption and excellent straightness of light is used as a light source. In recent years, in the automotive industry, a trend toward light sources with excellent reliability, design, functionality and energy efficiency is forming. As electronic devices become highly integrated, more heat is generated, which not only degrades the function of the device, but also causes malfunction of peripheral devices, deterioration of substrates and reflectors, etc., so research on improving heat dissipation efficiency is required.

The vehicle lamp module includes a reflector to reflect light generated from the lamp module. In general, since the reflector plays a role of reflecting light, considerable heat is generated, which causes malfunction or deterioration of peripheral devices. Therefore, in order to dissipate heat generated from the reflector, a separate heat dissipation device is added and used. However, if a separate heat dissipation device is provided, the production cost of the lamp module increases.

Accordingly, in the present invention, a heat radiation function is not added to a lamp module such as a headlamp, but a heat radiation function is added to the reflector.

Korean Patent Application Publication No. 10-2012-0139939

An object of the present invention is to prepare a reflector made from pellets for injection molding of a reflector comprising a polymer matrix and ceramic particles.

Another object of the present invention is the step of mixing a polymer matrix and ceramic particles; Molding the mixture by a pellet injection machine to prepare pellets for injection molding with a reflector; And it is to provide a method of manufacturing a reflector manufactured from the pellets for injection molding of the reflector comprising the step of manufacturing a reflector using the pellets for injection molding of the reflector.

In order to achieve the above object, in one aspect, the present invention provides a reflector manufactured from pellets for injection molding of a reflector comprising a polymer matrix and ceramic particles.

In the present invention, the polymer matrix is at least one resin selected from the group consisting of polybutylene tetraphthalate, epoxy, and polyamide.

In the present invention, the ceramic particles are at least one selected from the group consisting of alumina, aluminum nitride, silica, titanium oxide, and zirconia.

In the present invention, it includes 30 to 50% by weight of the polymer matrix and 50 to 70% by weight of ceramic particles.

In the present invention, the polymer matrix is a polyamide.

In the present invention, the ceramic particles are spherical and include first particles having an average particle diameter of 15 to 30 μm, second particles having an average particle diameter of 7 to 13 μm, and third particles having an average particle diameter of 3 to 6 μm.

In the present invention, the pellet for injection molding has a thermal conductivity of 0.7 to 2.2 W/mk.

In another aspect, the present invention comprises the steps of mixing a polymer matrix and ceramic particles; Molding the mixture by a pellet injection machine to prepare pellets for injection molding with a reflector; And it provides a method of manufacturing a reflector manufactured from the reflector injection molding pellets comprising the step of manufacturing a reflector using the reflector injection molding pellets.

The present invention relates to a reflector manufactured from pellets for injection molding of a reflector including a polymer matrix and ceramic particles, and a method of manufacturing the same.

The pellet for injection molding of a reflector of the present invention has excellent thermal conductivity, injection flowability, injection molding property, and heat dissipation performance, and thus can be used in the manufacture of a reflector.

1 shows a pellet form of NO.1 prepared using polybutylene terephthalate (PBT) and spherical alumina (Al ₂ O ₃ ).
2 shows a specimen manufactured according to ASTM E1461-13 standard using a heating press equipment and a heating press equipment (left of FIG. 2).
3 is a result of evaluating the thermal conductivity of a polymer/ceramic composite material.
4 shows an injection flowability evaluation equipment.
5 is a result of evaluating injection flowability using pellets made of PBT+alumina.
6 is a result of evaluating injection flowability using pellets made of PA + alumina.
7 shows the results of an injection moldability test using PBT (40%) + Al ₂ O ₃ (60%), PA (40%) + Al ₂ O ₃ (60%).
8 shows a configuration for evaluating the heat dissipation performance of the reflector. ① is Generator (SPS-2415), ② is Data Logger (GL820), ③ is PBT Reflector, ④ is PA+Al ₂ O ₃ Reflector, ⑤ is PC Chamber, ⑥ is K-type thermocouple. Show.
9 shows a method of measuring heat dissipation performance and measuring points using a reflector made of a polymer/ceramic material.
10 shows the results of a heat dissipation performance experiment using a reflector made of PA (40%) + Al ₂ O ₃ (60%).
11 shows the results of a heat dissipation performance experiment using a reflector made of PBT.
12 shows the results of a heat dissipation performance experiment using a reflector made of PA (40%) + Al ₂ O ₃ (60%) and PBT.

Hereinafter, the present invention will be described in detail with reference to the drawings so that those of ordinary skill in the art can easily implement it. However, the present invention may be implemented in various different forms, and is not limited to the embodiments or drawings described herein. The same reference numerals are assigned to similar parts throughout the specification.

In one aspect, the present invention provides a reflector made from pellets for injection molding of a reflector comprising a polymer matrix and ceramic particles.

In the present invention, the polymer matrix may be a thermoplastic resin or a thermosetting resin used when manufacturing a plastic product by injection molding. In the case of manufacturing a plastic injection molded product using the polymer matrix, there is an advantage in that adhesion and adhesion are excellent and molding is easy. For example, the polymer matrix may be one or more resins selected from the group consisting of polybutylene tetraphthalate, epoxy, and polyamide.

However, a thermoplastic resin or a thermosetting resin used as a polymer matrix has a problem that heat dissipation characteristics are considerably deteriorated because of low thermal conductivity. In the case of a reflector applied to a lamp, a considerable amount of heat is generated, so the heat dissipation characteristic is very important. Therefore, in the case of manufacturing a reflector using only a polymer matrix, heat dissipation properties are deteriorated, and thus it is necessary to mix a polymer matrix and a material having excellent thermal conductivity. There is a ceramic material as a material having excellent thermal conductivity. The ceramic material has a disadvantage of excellent thermal conductivity but low formability.

Therefore, it is important to mix the polymer matrix and the ceramic material in an appropriate ratio to produce pellets for injection molding reflecting mirrors that are excellent in optimum thermal conductivity, injection flow, moldability, and heat dissipation performance. In addition, even if the polymer matrix and the ceramic material are mixed in the same ratio, thermal conductivity, injection flow, moldability, and heat dissipation performance are different depending on the type of the polymer matrix. Therefore, in the present invention, the optimal polymer matrix material and ceramic material are searched, and thermal conductivity, injection flowability, moldability, and heat dissipation performance are evaluated according to the mixing ratio thereof, and the optimum polymer matrix material and ceramic material and the mixing ratio thereof are evaluated. Was identified.

A reflector may be manufactured using the above-described reflector injection molding pellet. That is, by using the pellets for injection molding of the reflector, a reflector may be manufactured by an injection molding process.

In the present invention, the ceramic particles may be at least one selected from the group consisting of alumina, aluminum nitride, silica, titanium oxide, and zirconia.

In the present invention, the reflector prepared from the pellet for injection molding of the reflector may include 30 to 50% by weight of the polymer matrix and 50 to 70% by weight of ceramic particles. In this case, a reflector can be manufactured from pellets for injection molding of a reflector having sufficient thermal conductivity, injection flowability, moldability and heat dissipation performance.

When the content of the polymer matrix contained in the pellet for injection molding of the reflector exceeds 30 to 50% by weight, injection flow and moldability are good, but the content of ceramic particles decreases, resulting in lower thermal conductivity and lower heat dissipation performance. There is this. On the other hand, when the content of the ceramic particles exceeds 50 to 70% by weight, thermal conductivity and heat dissipation performance are good, but the content of the polymer matrix decreases, resulting in poor injection flow and moldability.

In the present invention, the polymer matrix is not particularly limited, but may be polyamide. When polyamide is applied, it has excellent injection moldability compared to polybutylene tetraphthalate of the same content, and thermal conductivity compared to epoxy of the same content. Is high, and it is advantageous in terms of thermal conductivity and injection moldability to apply polyamide as a polymer matrix.

In the present invention, the ceramic particles are spherical, and the meaning of spherical means an overall round shape, excluding an angular shape such as a plate shape, and does not mean a perfect spherical shape, but an oval shape or a spherical shape in which a part thereof is crushed Also includes. In the present invention, since the ceramic particles form a heat transfer path, it is important that the ceramic particles are effectively dispersed in the polymer matrix. When the ceramic particles are dispersed in the polymer matrix, even spherical ceramic particles may damage the screw of the injection machine during injection molding. In order to solve this problem, it is preferable to apply a spherical ceramic particle or an aggregate of the spherical ceramic particle dispersed in a polymer matrix. In this case, at the same time as the problem of damage to the injection machine, ceramic particles are effectively dispersed in the polymer matrix, thereby improving the flowability of the pellet composition for injection molding of the reflector, thereby improving workability. In addition, the ceramic particles form a heat transfer path to improve thermal conductivity and heat dissipation characteristics.

As the spherical ceramic particles, one having one particle diameter may be applied, but a mixture of two or three or more different particle diameters may be applied to improve heat dissipation. At this time, the spherical ceramic particles having different particle diameters are spherical first particles having an average particle diameter of 15 to 30 μm, spherical second particles having an average particle diameter of 7 to 13 μm, and a spherical third particle having an average particle diameter of 3 to 6 μm. A mixture of can be applied. The ratio of the first particle, the second particle, and the third particle to be mixed is specifically, based on 1 part by weight of the first particle, 0.5 to 1.5 parts by weight of the second particle, and 8 to 12 parts by weight of the third particle. It may be included in parts by weight, and more specifically, based on 1 part by weight of the first particle, the second particle may be included in an amount of 0.7 to 1.3 parts by weight, and the third particle may be included in an amount of 9 to 11 parts by weight. When mixed and applied in such a ratio, the thermal conductivity and heat dissipation characteristics of the injection can be further improved.

In the present invention, the pellets for injection molding of the reflector have a thermal conductivity of 0.7 to 2.2 W/mk. When the thermal conductivity of the pellets for injection molding of the reflector is less than 0.7 W/mk, it does not have adequate thermal conductivity for the reflecting mirror, so there is no sufficient heat dissipation property.In order to have a thermal conductivity of more than 2.2 W/mk, expensive There is a downside to using materials.

In another aspect, the present invention comprises the steps of mixing a polymer matrix and ceramic particles; Molding the mixture by a pellet injection machine to prepare pellets for injection molding with a reflector; And it provides a method of manufacturing a reflector manufactured from the reflector injection molding pellets comprising the step of manufacturing a reflector using the reflector injection molding pellets.

In the present invention, descriptions of the terms polymer matrix, ceramic particles, pellets for injection molding of reflectors, and reflectors are as described above.

The method of manufacturing a reflector manufactured from pellets for reflector injection molding of the present invention includes mixing a polymer matrix and ceramic particles. 40 to 50% by weight of the polymer matrix and 50 to 60% by weight of ceramic particles may be mixed, and in this case, a pellet for injection molding of a reflector having sufficient thermal conductivity, injection flowability, moldability and heat dissipation performance can be prepared. . The polymer matrix may be applied by melting, and may be mixed in a molten state to have a form in which ceramic particles are dispersed in the polymer matrix.

Next, the polymer matrix and the mixture of ceramic particles are molded by a pellet injection machine to prepare pellets for injection molding of a reflector. The ceramic particles are dispersed in the molten polymer matrix, and a mixture having a liquid or slurry form is introduced into a pellet injection machine to prepare pellets for injection molding with a reflector.

Next, it includes the step of manufacturing a reflector using the pellet for injection molding of the reflector. The prepared reflector injection molding pellet is used to manufacture a reflector through an injection molding process.

Hereinafter, the present invention will be described in more detail by examples. However, the following examples are merely illustrative of the present invention, and the contents of the present invention are not limited to the following examples.

<Experimental Example 1> Preparation of polymer/ceramic filler composite pellets

Polybutylene terephthalate (PBT) and spherical alumina (Al ₂ O ₃ ), epoxy resin and spherical alumina (Al ₂ O ₃ ), polyamide (PA) and spherical alumina (Al ₂ O ₃ ) are mixed A pellet made of a polymer/ceramic composite material was prepared. In addition, polybutylene terephthalate (PBT), carbon nanotubes (CNT), and spherical alumina (Al ₂ O ₃ ) were mixed to prepare pellets, and pellets of PBT alone were also prepared. The spherical alumina was used as a filler, and three types of spherical alumina having a particle diameter of 25, 10, and 5 μm, respectively, were mixed in an amount of 1, 1, and 10 parts by weight, respectively. Further, a pellet of PBT alone was also prepared.

The pellets were manufactured using a twin screw extruder, and a device having a screw diameter of 30 mm and an L/D ratio of 40:1 was used. The pellet form of NO 1 is shown in FIG. 1. The remaining forms of the pellets of NO 2-NO 14 were the same as those of EH NO 1.

Pellet composition made of polymer/ceramic composite material NO Polymer material (% by weight) Ceramic material (% by weight) Carbon nanotube (CNT)
(weight%) PBT PA Epoxy Alumina One 50 - - 50 - 2 40 - - 60 - 3 30 - - 70 - 4 20 - - 80 - 5 - - 50 50 - 6 - - 40 60 - 7 - - 30 70 - 8 - - 20 80 - 9 - 40 - 60 - 10 100 - - - - 11 35 - - 50 15

<Experimental Example 2> Evaluation of thermal conductivity of polymer/ceramic composite pellets

To evaluate the thermal conductivity of the prepared pellets, a specimen (right of FIG. 2) was prepared according to ASTM E1461-13 standards using the composition of Table 1 and the heating press equipment shown in FIG. 2 (left of FIG. 2). The specimen preparation conditions of the heating press were set to a temperature of 270°C, a pressure of 6kgf/cm ² , and a pressing time of 5min.

3 is a result of evaluating the thermal conductivity of a polymer/ceramic composite material. As a result of evaluating the thermal conductivity using PBT, PA, or pellets manufactured using epoxy and alumina, the pellets manufactured using epoxy had lower thermal conductivity compared to the case of using the same amount of PBT and PA. In addition, in the case of pellet NO 14 prepared using CNT, the thermal conductivity was high, but due to the characteristics of the CNT material, it was not uniformly mixed, making it difficult to properly generate pellets. In addition, in the case of a CNT material, it is inappropriate for applying to a reflector as electricity is passed through it as a conductive material.

Thermal conductivity analysis of pellets made of polymer/ceramic composite materials NO Polymer material
(weight%) Ceramic material
(weight%) Carbon nanotube
(CNT) (% by weight) Thermal conductivity(W/mK) PBT PA Epoxy Alumina One 50 - - 50 - 0.74 2 40 - - 60 - 1.21 3 30 - - 70 - 1.28 4 20 - - 80 - 2.12 5 - - 50 50 - 0.44 6 - - 40 60 - 0.66 7 - - 30 70 - 0.62 8 - - 20 80 - 1.25 9 - 40 - 60 - 1.13 10 100 - - - - 0.25 11 35 - - 50 15 2.24

<Experimental Example 3> Evaluation of injection flowability of polymer/ceramic composite pellets

Prior to Experimental Example 2, the injection flowability was evaluated using pellets made of PBT + alumina and PA + alumina having relatively high thermal conductivity. The injection flowability evaluation equipment is shown in Figure 4 and the results are shown in Figures 5 and 6.

The injection flowability test was performed according to ASTM D3123-09 standard, and as a result of the injection flowability test, a spiral specimen came out well from pellets prepared by mixing 30-50% PA or PBT and 50-70% alumina. However, when the alumina content exceeded 70%, the specimen was cracked and the nozzle was clogged. Therefore, it was found that the injection flowability was excellent when 30 to 50% of PA or PBT and 50 to 70% of alumina were mixed.

<Experimental Example 4> Injection moldability test of polymer/ceramic composite material

Next, an injection test was performed using a pellet in which 40% of PA or PBT and 60% of alumina were mixed, which had good injection flow. 7 shows the results of an injection test using PBT (40%) + Al ₂ O ₃ (60%), PA (40%) + Al ₂ O ₃ (60%). The upper left and right photographs of FIG. 7 are photographs of sample injection using PBT (40%) + Al2O3 (60%), PA (40%) + Al2O3 (60%), respectively. As a result, in the case of PBT (40%) + Al ₂ O ₃ (60%) in the upper right of FIG. 7, cracking occurred during the hardening process after injection. However, it was confirmed that the injection proceeded successfully without breaking after the injection of PA (40%) + Al ₂ O ₃ (60%). PBT has a strong brittle (breakable) property due to the nature of the resin, so there is a problem that it is broken due to heat shrinkage as shown in the left photo of FIG. 7. On the other hand, as shown in the photo on the right, when alumina was mixed with PA, it was confirmed that the shape was maintained without breaking due to the toughness of PA.

The middle photo on the right of FIG. 7 shows the reflector emitted using PA (40%) + Al ₂ O ₃ (60%), and the lower right photo shows the deposition of aluminum on the radiated reflector. In the present invention, in the case of injection using PA (40%) + Al ₂ O ₃ (60%), since it was confirmed that the shape is maintained without breaking during the hardening process after injection, PA (40%) + Al ₂ O ₃ (60%) was used to inject the reflector. As a result, it was confirmed that the shape of the reflector was well maintained after the injection in the case of the reflector injection as in the sample injection.

Therefore, it was found that it is preferable to eject the reflector using PA (40%) + Al ₂ O ₃ (60%).

<Experimental Example 5> Experiment of heat dissipation performance of polymer/ceramic composite material

Next, the heat dissipation performance was compared using a conventional PBT reflector and a reflector manufactured using PA (40%) + Al ₂ O ₃ (60%), which had excellent thermal conductivity, injection flow, and injection. The heat dissipation test was performed as shown in FIG. 8. In Fig. 8, ① is Generator (SPS-2415), ② is Data Logger (GL820), ③ is PBT Reflector, ④ is PA+Al ₂ O ₃ Reflector, ⑤ is PC Chamber, ⑥ is K- represents a type thermocouple.

9 shows a method of measuring heat dissipation performance and measuring points using a reflector made of a polymer/ceramic material. Specifically, the power was turned on by applying a voltage of 12V to the bulb using SPS-2415 (Generator) equipment. Next, a K-type thermocouple was used to fix it at nine points of the reflector, and the temperature was measured using a data logger. T1, T2, T3, T4, T5, T6, T7, T8, and T9 represent the temperature measurement points of a reflector manufactured using PA (40%) + Al ₂ O ₃ (60%). T11, T12, T13, T14, T15, T16, T17, T18, T19 denote temperature measurement points of reflectors manufactured using PBT.

Heat dissipation performance result using reflector manufactured using PA(40%)+Al ₂ O ₃ (60%) Time (s) T1 T2 T3 T4 T5 T6 T7 T8 T9 One 23.9 24.1 23.6 27.5 27.6 27.9 27.7 26.5 27.9 2 23.9 24.1 23.6 27.9 28.2 28.3 28 26.7 28.3 3 24 24.3 23.8 28.5 29.5 29 28.6 27.2 29 4 24.3 24.7 24.1 29 30.8 29.5 29 27.5 29.5 5 24.5 25.1 24.4 29.3 32.1 30 29.3 27.8 29.8 6 24.8 25.4 24.7 29.7 33.4 30.5 29.7 28.1 30.2 7 25.1 25.9 25.1 30.1 34.7 31 30.1 28.5 30.7 8 25.2 26.4 25.4 30.5 36 31.4 30.5 28.8 31.1 · … … … … … … … … … 1393 60.1 77.2 64.9 65.6 88.7 70.6 63.8 55.9 58.1 1394 60.1 77.1 64.9 65.6 88.7 70.6 63.8 55.9 58.1 1395 60.1 77.1 64.9 65.6 88.7 70.6 63.8 55.9 58.1 1396 60.1 77.1 64.9 65.6 88.7 70.6 63.8 55.9 58.1 1397 60.1 77.1 64.9 65.5 88.7 70.6 63.8 55.9 58.1 1398 60.1 77.1 64.9 65.5 88.7 70.6 63.8 55.9 58.1 1399 60 77 64.8 65.5 88.7 70.6 63.7 55.8 58.1 1400 60 77 64.8 65.5 88.7 70.6 63.7 55.8 58.1

Heat dissipation performance result using reflector manufactured using PBT (40%) + Al ₂ O ₃ (60%) Time (s) T11 T12 T13 T14 T15 T16 T17 T18 T19 One 22.6 23 22.8 27.1 27.5 27.8 28.7 27.7 27.8 2 22.6 23.1 22.8 27.4 28 28.1 29 28 28.8 3 22.7 23.2 22.9 28 29.2 28.7 29.6 28.7 29.3 4 22.9 23.4 23.1 28.3 30.3 29.3 30.1 29.2 30.4 5 23.1 23.7 23.2 28.8 31.6 29.6 30.6 29.6 30.8 6 23.4 24.1 23.4 29.2 32.8 30.1 31.1 30 31.1 7 23.6 24.6 23.7 29.6 34.2 30.6 31.4 30.3 31.6 8 23.9 25 23.9 30 35.4 31 31.9 30.6 31.9 · … … … … … … … … … 1393 55.1 74.5 54.9 63.3 95.6 70.1 65.2 57.1 58.6 1394 55.1 74.6 54.9 63.3 95.6 70.1 65.2 57.1 58.6 1395 55.1 74.5 54.9 63.3 95.6 70.1 65.2 57.1 58.6 1396 55.1 74.5 54.9 63.3 95.6 70.1 65.2 57.1 58.6 1397 55.1 74.5 54.9 63.3 95.6 70.1 65.2 57.1 58.6 1398 55.1 74.5 54.8 63.3 95.6 70.1 65.2 57 58.5 1399 55.1 74.4 54.8 63.2 95.6 70 65.2 56.9 58.5 1400 55.1 74.4 54.8 63.2 95.6 70 65.2 56.9 58.5

10 shows the results of a heat dissipation performance experiment using a reflector made of PA (40%) + Al ₂ O ₃ (60%). 11 shows the results of a heat dissipation performance experiment using a reflector made of PBT.

As shown in FIGS. 10 and 11 and Tables 3 and 4, the maximum temperature was measured at the T5/T15 point. Existing PBT reflector showed the highest temperature of 95.6℃ at T15 point between 1393~1400 seconds. However, the reflector manufactured using PA (40%) + Al ₂ O ₃ (60%) exhibits a maximum temperature of 87.8°C at the T5 point between 1393 and 1400 seconds, improving the heat dissipation performance by 15.2% compared to the existing PBT reflector. Became. In addition, Figure 12 shows the results of the heat dissipation performance experiment using a reflector made of PA (40%) + Al ₂ O ₃ (60%), PBT.

As a result, it was confirmed that the heat transfer of the PA (40%) + Al ₂ O ₃ (60%) reflector was evenly distributed for each measurement point, so that the heat transfer performance was superior to that of the PBT reflector.

Claims (8)

A reflector made from pellets for injection molding of a reflector comprising a polymer matrix and ceramic particles. The reflector of claim 1, wherein the polymer matrix is at least one resin selected from the group consisting of polybutylenetetraphthalate, epoxy, and polyamide. The reflector of claim 1, wherein the ceramic particles are at least one selected from the group consisting of alumina, aluminum nitride, silica, titanium oxide, and zirconia. The reflector of claim 1, comprising 30 to 50% by weight of the polymer matrix and 50 to 70% by weight of ceramic particles. The reflector of claim 1, wherein the polymer matrix is polyamide. In claim 1, wherein the ceramic particles are spherical, comprising a first particle having an average particle diameter of 15 to 30 μm, a second particle having an average particle diameter of 7 to 13 μm, and a third particle having an average particle diameter of 3 to 6 μm, Reflector. The reflector of claim 1, wherein the pellet for injection molding of the reflector has a thermal conductivity of 0.7 to 2.2 W/mk. Mixing the polymer matrix and ceramic particles;
Molding the mixture by a pellet injection machine to prepare pellets for injection molding with a reflector; And manufacturing a reflector using the pellet for injection molding of the reflector. A method for manufacturing a reflector manufactured from pellets for injection molding of the reflector.

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