KR101589871B1 - The manufacturing method of the uncoated exterior for car and the uncoated exterior made by the method - Google Patents

The manufacturing method of the uncoated exterior for car and the uncoated exterior made by the method Download PDF

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Publication number
KR101589871B1
KR101589871B1 KR1020150062956A KR20150062956A KR101589871B1 KR 101589871 B1 KR101589871 B1 KR 101589871B1 KR 1020150062956 A KR1020150062956 A KR 1020150062956A KR 20150062956 A KR20150062956 A KR 20150062956A KR 101589871 B1 KR101589871 B1 KR 101589871B1
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South Korea
Prior art keywords
polymethyl methacrylate
pmma
polycarbonate
mold
exterior material
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KR1020150062956A
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Korean (ko)
Inventor
김기일
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김기일
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material

Abstract

The present invention relates to a method of manufacturing an uncoated automobile exterior material and an exterior material made by the method. More particularly, the present invention relates to a method of manufacturing an automobile exterior material by injection molding using a polymethyl methacrylate or polycarbonate-polymethyl methacrylate A method for manufacturing an automobile exterior material to be made, and an exterior material made by the method.
A method for manufacturing an automotive exterior material according to an aspect of the present invention includes a drying step, a receiving step, a heating step, a metering step, an injection step, and a cooling step. The drying step is performed by drying polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA). In the step of receiving, the polymethyl methacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) dried in the drying step is put on the injection cylinder. The heating step heats the cylinder in which the polymethyl methacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) is loaded to a temperature of two or more stages along the longitudinal direction. The metering step metering the polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) by an amount to be injected. The injection step injects the metered polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) into the mold at a constant pressure. The cooling step is carried out by cooling the polyimethylacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) to a temperature of two or more stages along the longitudinal direction based on the injection port of the injection mold.
According to the present invention, after polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) is injected into a mold, the mold is divided into several stages, To produce an exterior material that does not require a painting process with similar surface gloss performance as that of the painting operation. Accordingly, not only can the manufacturing process of the exterior material be simplified, but also the exterior material can be manufactured environmentally friendly without emitting environmental pollutants.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a manufacturing method of a vehicle exterior surface material,

The present invention relates to a method of manufacturing an uncoated automobile exterior material and an exterior material made by the method. More particularly, the present invention relates to a method of manufacturing an automobile exterior material by injection molding using a polymethyl methacrylate or polycarbonate-polymethyl methacrylate A method for manufacturing an automobile exterior material to be made, and an exterior material made by the method.

Fog lamps, back doors, side moldings and air spoilers made of plastic among automotive exterior materials are made of composite PP (polypropylene), PC-ABS (acrylonitrile-butadiene-styrene ), PC-ASA (acrylonitrile-styrene-acrylate), and the like.

In other words, most of the exterior parts of automobile exterior parts are painted before being assembled to the vehicle or painted after some plating, so that the painting process is essential.

Korean Patent Publication No. 2008-0034314 Japanese Patent No. 3862075 Korean Patent No. 240981 Japanese Laid-Open Patent Application No. 2012-0006536

The coating process used in the manufacture of automotive exterior materials generates VOC (Volatile Organic Compounds) and consists of six complicated processes such as primer process. Volatile organic compounds (VOCs) are easily vaporized into the atmosphere because of high vapor pressure, and when they coexist with nitrogen oxides in the atmosphere, they generate photochemical reaction under the action of sunlight, causing photochemical smog of ozone and PAN (Peroxyacetyl nitrate).

Accordingly, the conventional automotive exterior material has a problem that since the painting process is performed, the process is complicated and not only the working efficiency is high, but also environmental pollution is caused.

The present invention is intended to solve the above problems. The present invention relates to a method for manufacturing an automobile exterior material by injection molding with polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) To provide an automotive exterior material manufactured by the method.

A method for manufacturing an automotive exterior material according to an aspect of the present invention includes a drying step, a receiving step, a heating step, a metering step, an injection step, and a cooling step. The drying step is performed by drying polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA). In the step of receiving, the polymethyl methacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) dried in the drying step is put on the injection cylinder. The heating step heats the cylinder in which the polymethyl methacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) is loaded to a temperature of two or more stages along the longitudinal direction. The metering step metering the polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) by an amount to be injected. The injection step injects the metered polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) into the mold at a constant pressure. The cooling step is carried out by cooling the polyimethylacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) to a temperature of two or more stages along the longitudinal direction based on the injection port of the injection mold.

In addition, in the method for manufacturing the automotive exterior material, it is preferable that the heating step is performed in two or more stages at a low temperature and a high temperature in a direction farther from the injection port of the cylinder in the longitudinal direction. The cooling step may be performed in two or more stages from a high temperature to a low temperature in a direction away from the injection port of the mold near the longitudinal direction. This makes it possible to reduce the gloss variation of the surface of the casing.

Also, in the method for manufacturing the automobile exterior material, the injection step may be divided into multiple steps from high pressure to low pressure to pressurize the polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) And is preferably injected into the mold in one direction in the longitudinal direction.

In addition, in the method for manufacturing the automotive exterior material, it is preferable that the cooling step is performed by introducing cooling water, which is set at different temperatures, into the cooling line, in which the cooling lines are formed in two or more stages individually along the longitudinal direction .

According to another aspect of the present invention, a method for manufacturing an automotive exterior material includes a drying step, a receiving step, a heating step, a metering step, an injection step and a cooling step. The drying step is performed by drying polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA). The receiving step is to put the methyl polymethacrylate or polycarbonate-polymethacrylate dried in the drying step in the injection cylinder. The heating step heats the cylinders in which the polymethyl methacrylate or polycarbonate-polymethyl methacrylate is loaded to a temperature of two or more different stages along the length direction. The metering step measures the methyl polymethacrylate or polycarbonate-polymethyl methacrylate by the amount to be injected. The injection step injects the metered polymethyl methacrylate or polycarbonate-polymethyl methacrylate into a mold forming an automotive exterior material at a constant pressure. The cooling step cools the mold from which the polymethyl methacrylate or polycarbonate-polymethyl methacrylate is injected. At this time, the cooling step cools the exposed side mold of the exterior material by 10 to 15 degrees lower than the non-exposed side mold of the exterior material.

The automotive exterior material according to one aspect of the present invention is formed by injecting polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) into a mold, And cooling in a multi-stage from a high temperature to a low temperature in a direction far from the center.

According to the present invention, after polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) is injected into a mold, the mold is divided into several stages, To produce an exterior material that does not require a painting process with similar surface gloss performance as that of the painting operation. Accordingly, not only can the manufacturing process of the exterior material be simplified, but also the exterior material can be manufactured environmentally friendly without emitting environmental pollutants.

1 is a conceptual view of a method for manufacturing an automotive exterior material according to the present invention,
Fig. 2 is a conceptual view of a mold apparatus for manufacturing the automotive exterior material of Fig. 1,
3 is a conceptual view of a mold of the mold apparatus of FIG.

A method for manufacturing an automotive exterior material according to the present invention will be described with reference to FIGS. 1 and 2. FIG.

The method for manufacturing an automotive exterior material according to the present invention includes the steps of drying S11, receiving S13, heating S15, metering S17, injection S19, and cooling S21, .

The facing material according to the present invention is produced using polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA). The physical properties of methyl polymethacrylate used in this case are shown in Table 1 below, and the physical properties of polycarbonate-polymethyl methacrylate (PC-PMMA) are shown in Table 2 below. The automotive exterior material is formed by injection molding using methyl polymethacrylate having the physical properties shown in Table 1 or polycarbonate-polymethyl methacrylate having the physical properties shown in Table 2.

Property Condition Unit Method Value Physical properties Refractive index
(Refractive Index) nd - ISO 489 1.49 Thermal property Melt Index
(Melt Flow Index) 239 / 3.8 g / 10 min ISO 1133 2.3 Vicat softening point
(VICAT Softening Point) B / 50 ℃ ISO 306 102 Heat distortion temperature
(Heat Deflection Temperature) 1.8 Mpa ℃ ISO 75 94 Coefficient of linear expansion
(Coefficient of Linear Expansion) - Mm / mm / ° C ASTM D696 7 x 10 -5 Mechanical property Sharp impact strength
(Charpy Impact Strength) Unnotched KJ / ㎡ ISO 179 1e / U 20 Rockwell hardness
(Rockwel Hardness) M scale M scale ASTM D785 100 The tensile strength
(Tensile Strength) 5 mm / min MPa ISO 527 74 Tensile elongation
(Tensile Elongation) 5 mm / min % ISO 527 4.5 General property importance - g / cm3 ISO 1183 1.18 Mold Shrinkage
(Mold shrinkage) - % ASTM D955 0.2 to 0.6 Absorption rate
(Water Absorption) 24hr % ASTM D570 0.4 Flammability
(Flammability) - - UL94 HB

Test Methods
(Test Method) Value Unit Physical properties Melt Index
(Melt Flow Index, 250 DEG C, 2.16 kg) ASTM D1238 7 g / 10 min importance ASTM D792 1.20 Mold Shrinkage
(Mold shrinkage) HPC method 0.5 to 0.8 % Mechanical property The tensile strength
(Tensile Strength, yield, 50 mm / min) ASTMD638 650 kgf / cm2 Tensile elongation
(Tensle Elongation, yield, 50 mm / min) ASTMD638 1-3 % Flexural strength
(Flexural Strength, yield, 10 mm / min) ASTM D790 900 kgf / cm2 Flexural modulus
(Flexural Modulus, 10 mm / min) ASTM D790 25,000 kgf / cm2 Izod impact strength
IZOD Impact Strength, notched, 23 ° C, 1/8 " ASTM D256 6.4 kg · cm / cm                       notched, 23 < 0 > C, 1/4 " ASTM D256 5.9 kg · cm / cm                       notched, -30 ° C, 1/8 " ASTM D256 - kg · cm / cm Thermal property Heat distortion temperature
Heat Distortion Temp. 4.6 kgf / cm 2 ASTM D648 - ℃                        18.6 kgf / cm 2 ASTM D648 105 ℃

In the drying step S11, the material of polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) is put in a dehumidifier and dried at about 80 to 95 ° C for about 2 to 3 hours.

In the receiving step S13, polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) dried in the drying step S11 is put into the injection cylinder 13. At this time, the dried polymethyl methacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) dried in the drying step S11 is put into a hopper 11 and dried once, And is put into the cylinder 13.

The heating step S15 heats the cylinder 13 in which the polymethyl methacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) is loaded to various temperatures along the length direction. At this time, from the injection port of the cylinder 13 injected from the hopper 11, the multi-stages are heated from a low temperature to a high temperature in a direction farther from the vicinity along the longitudinal direction.

In the case of this embodiment, the cylinder 13 is divided into a nozzle portion, a N1 portion, an N2 portion, an N3 portion, and an N4 portion in the longitudinal direction from the nozzle. Herein, N4 is a position near the injection port injected from the hopper 11 into the cylinder 13, and the nozzle part is the exhaust port exhausted for injection. Therefore, the N4 part moves away from the injection port of the cylinder 13 in the longitudinal direction toward the nozzle part. At this time, in the case of polymethyl methacrylate (PMMA), the nozzle portion is heated to a temperature of 235 to 240 ° C, the N1 portion to 230 to 235 ° C, the N2 portion to 230 to 235 ° C, the N3 portion to 225 to 230 ° C, . Then, polymethyl methacrylate (PMMA) is melted in the cylinder 13. In the case of polycarbonate-polymethyl methacrylate (PC-PMMA), the nozzle part is 265 to 270 ° C, the N1 part is 260 to 265 ° C, the N2 part is 255 to 260 ° C, the N3 part is 250 to 255 ° C, Lt; / RTI >

The metering step S17 measures the amount of polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) by an amount to be injected from the inside of the cylinder 13. The mold must be closed and weighed before weighing.

Injection Step S19 The metered polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) is injected into the mold 15 at a constant pressure. At this time, if the injection is performed at a single pressure, polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) may not be formed into a desired shape. Thus, in the injection step S19, the polymethyl methacrylate (PMMA) or the polycarbonate-polymethyl methacrylate (PC-PMMA) is injected into the mold 15 by applying a multi-stage pressure. For example, the first stage is a constant pressure stage and the pressure is applied at a pressure of 1750 kg / cm 2. In the second stage, a pressure of 1050 kg / cm 2 is maintained to maintain a constant pressure. In the third stage, 450 kg / Can be added. The pressure applied depends on the burr, humidity and seasonal conditions of the product.

The cooling step S21 is to cool the mold in which polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) is injected. At this time, the temperature of the mold 15 is lowered as the injection port is hot and the temperature is further away from the injection port. That is, the temperature near the injection port 16 of the mold into which polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA) is injected is higher while the temperature is lower as the distance from the injection port 16 is increased. In the conventional case, the mold is cooled by using cooling water at the same temperature when the mold is cooled after injection into the mold. In this case, the temperature of the mold differs as the mold is moved away from the injection port. Since the mold temperature is cooled by the cooling water of the same temperature, a flow mark (weld line, flow mark, etc.) and gloss difference occur in the injection molded product. So it was necessary to do painting after injection molding.

In the cooling step S21 of the present embodiment, the cooling water lines 18 that can be individually supplied to the mold 15 are provided in two or more stages, and the cooling water set to different temperatures is supplied to the respective cooling water lines 18 The mold 15 is cooled. That is, by using a specially designed separate cooling controller, cooling water of high temperature and low temperature in the direction far from the injection port 16 is supplied to each cooling water line 18 to cool the mold 15. That is, since the temperature of the mold 15 in the vicinity of the injection port 16 is higher and the temperature of the mold 15 becomes lower as the distance from the injection port 16 increases, the cooling water controlled to a lower temperature is introduced into the injection port 16 of the mold 15 And cooled to a higher temperature controlled cooling water as it moves away from the injection port 16. [ Temperature control can vary depending on the situation, taking into account humidity, seasonal conditions, and so on. This can prevent the occurrence of differences in the coolant flow mark (weld line, flow mark, etc.) and surface gloss of the product, thereby omitting the painting operation.

When the cooling is completed, the mold is opened to take out the component.

Therefore, according to the present invention, unpatterned process can be realized, so that environmental pollution caused by a painting operation can be prevented, and a manufacturing process can be simplified to increase production efficiency.

On the other hand, in the case of the case described above, since the length of the case is long, the temperature difference of the case is large in the mold, so that the case is cooled by supplying the plural kinds of cooling water having different temperature in order to cool the case. However, when the size of the casing is 20 cm, the temperature difference of the casing is not large in the mold, so it is not necessary to supply the cooling water having different temperatures at multiple stages. In this case, cooling water of the same temperature is supplied to the mold to cool the casing. At this time, however, the mold itself is cooled at different temperatures.

Generally, the mold is separated into a movable side and a fixed side, and the movable side and the fixed side are combined to form an entire mold. When the exterior material injected by the mold is mounted on a vehicle, there are exposed portions and non-exposed portions that are not exposed. The exposed areas need to be polished but the unexposed areas do not need polish. When the resin is injected into the mold, the exposed portion of the casing is generally located on the moving side of the mold, and the unexposed portion of the casing is located on the fixed side of the mold. In some cases, the exposed portion may be located on the fixed side of the mold, and the un-exposed portion may be located on the moving portion of the mold. In the case where the length of the casing is small and it is not necessary to cool the casing in multistage with cooling water of different temperatures in the mold, the moving side and the stationary side of the mold are cooled to different temperatures. At this time, the mold having the exposed portion of the casing is cooled to a temperature of 10 to 15 캜 lower than the mold having the unexposed portion of the casing. For example, when the exposed portion is located on the moving side, the moving side of the mold is cooled by 10 to 15 ° C lower than the fixed side of the mold. Then, the exterior material injected from the mold is polished so as not to be painted in the case of the exposed portion.

10: door pillar 11: hopper
13: cylinder 15: mold
16:

Claims (6)

A drying step of drying polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA)
A receiving step of putting the polymethyl methacrylate or polycarbonate-polymethyl methacrylate dried in the drying step into an injection cylinder;
A heating step of heating the cylinder in which the polymethyl methacrylate or polycarbonate-polymethyl methacrylate is introduced to a temperature of two or more different stages along the longitudinal direction,
Metering said methyl polymethacrylate or polycarbonate-polymethyl methacrylate by an amount to be injected,
An injection step of injecting the metered polymethyl methacrylate or polycarbonate-polymethyl methacrylate into a mold at a constant pressure,
And a cooling step of cooling the polymethyl methacrylate or the polycarbonate-polymethyl methacrylate to two or more different temperatures along the longitudinal direction based on the injection port of the injection mold. ≪ / RTI > The method according to claim 1,
Wherein the heating step is performed in two or more stages from a low temperature to a high temperature in a direction farther from the injection port of the cylinder in the longitudinal direction,
Wherein the cooling step is performed in two or more stages from a high temperature to a low temperature in a direction away from the injection port of the mold in the longitudinal direction. 3. The method of claim 2,
Wherein the cooling step is performed by introducing cooling water set at different temperatures into the mold, in which cooling lines are formed in two or more stages in the longitudinal direction, respectively, into the cooling line to cool the mold. A drying step of drying polymethyl methacrylate (PMMA) or polycarbonate-polymethyl methacrylate (PC-PMMA)
A receiving step of putting the polymethyl methacrylate or polycarbonate-polymethyl methacrylate dried in the drying step into an injection cylinder;
A heating step of heating the cylinder in which the polymethyl methacrylate or polycarbonate-polymethyl methacrylate is introduced to a temperature of two or more different stages along the longitudinal direction,
Metering said methyl polymethacrylate or polycarbonate-polymethyl methacrylate by an amount to be injected,
An injection step of injecting the metered polymethyl methacrylate or polycarbonate-polymethyl methacrylate into a mold for forming an automotive exterior material at a constant pressure,
And a cooling step of cooling the mold from which the polymethyl methacrylate or polycarbonate-polymethyl methacrylate is injected,
Wherein the cooling step cools the exposed-side mold of the exterior material to a temperature lower by 10 to 15 degrees than the non-exposed-side mold of the exterior material. 5. The method according to any one of claims 1 to 4,
Wherein the injection step is divided into multiple steps from a high pressure to a low pressure to pressurize the polymethyl methacrylate or polycarbonate-polymethyl methacrylate into the mold in one direction in the longitudinal direction. Gt; delete
KR1020150062956A 2015-05-06 2015-05-06 The manufacturing method of the uncoated exterior for car and the uncoated exterior made by the method KR101589871B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101733930B1 (en) 2016-08-30 2017-05-24 김기일 The manufacturing method of the uncoated exterior for car

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100240981B1 (en) 1997-09-13 2000-02-01 이영일 Resin compositions having improved scratch resistance and impact strength
JP2002370265A (en) * 2001-06-18 2002-12-24 Mitsubishi Materials Corp Mold apparatus for molding and method for controlling its temperature
JP2004216579A (en) * 2003-01-09 2004-08-05 Asahi Kasei Chemicals Corp Molded product and its injection molding method
JP2004291274A (en) * 2003-03-25 2004-10-21 Ge Plastics Japan Ltd Method for molding molded product for uncoated car exterior panel and molded product
JP3862075B2 (en) 2001-10-31 2006-12-27 学校法人日本大学 RESIN COMPOSITION, LAMINATE USING SAME, AUTOMOBILE PARTS AND METHOD FOR PRODUCING THEM
JP2007223143A (en) * 2006-02-23 2007-09-06 Sumitomo Chemical Co Ltd Method for molding thermoplastic resin molding
KR20080034314A (en) 2006-10-16 2008-04-21 주식회사 엘지화학 Vehicle plastic glass with air spoiler
KR20120006536A (en) 2009-04-08 2012-01-18 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Lighting device having status indication by modulated light

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100240981B1 (en) 1997-09-13 2000-02-01 이영일 Resin compositions having improved scratch resistance and impact strength
JP2002370265A (en) * 2001-06-18 2002-12-24 Mitsubishi Materials Corp Mold apparatus for molding and method for controlling its temperature
JP3862075B2 (en) 2001-10-31 2006-12-27 学校法人日本大学 RESIN COMPOSITION, LAMINATE USING SAME, AUTOMOBILE PARTS AND METHOD FOR PRODUCING THEM
JP2004216579A (en) * 2003-01-09 2004-08-05 Asahi Kasei Chemicals Corp Molded product and its injection molding method
JP2004291274A (en) * 2003-03-25 2004-10-21 Ge Plastics Japan Ltd Method for molding molded product for uncoated car exterior panel and molded product
JP2007223143A (en) * 2006-02-23 2007-09-06 Sumitomo Chemical Co Ltd Method for molding thermoplastic resin molding
KR20080034314A (en) 2006-10-16 2008-04-21 주식회사 엘지화학 Vehicle plastic glass with air spoiler
KR20120006536A (en) 2009-04-08 2012-01-18 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Lighting device having status indication by modulated light

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101733930B1 (en) 2016-08-30 2017-05-24 김기일 The manufacturing method of the uncoated exterior for car

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