KR100493742B1 - Injection Molding Method of the Products having a Pattern on the Surface - Google Patents
Injection Molding Method of the Products having a Pattern on the Surface Download PDFInfo
- Publication number
- KR100493742B1 KR100493742B1 KR10-2002-0013999A KR20020013999A KR100493742B1 KR 100493742 B1 KR100493742 B1 KR 100493742B1 KR 20020013999 A KR20020013999 A KR 20020013999A KR 100493742 B1 KR100493742 B1 KR 100493742B1
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- South Korea
- Prior art keywords
- pattern
- mold
- product
- molding
- injection molding
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Classifications
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
- B29C45/372—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings provided with means for marking or patterning, e.g. numbering articles
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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
- B29C2045/0096—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor drying the moulding material before injection, e.g. by heating
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- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
- B29K2995/0074—Roughness, e.g. anti-slip patterned, grained
Abstract
본 발명은 표면에 무늬모양을 갖는 사출 성형제품 및 그 성형방법에 관한 것으로, 특히 표면에 미세한 요철 형태의 무늬 모양을 갖도록 사출 성형한 제품을 성형하기 위한 성형방법에 관한 것이다.The present invention relates to an injection molded product having a pattern on the surface and a molding method thereof, and more particularly to a molding method for molding an injection molded product to have a fine concavo-convex pattern on the surface.
일반적으로 종래의 다양한 사출성형제품은 표면에 사출 성형과정에서 직접 무늬모양을 성형하지 아니하고, 단지 스프레이 코팅 방식 또는 실크스크린에 의한 인쇄 방식이나 미리 인쇄한 필름을 이용하여 열전사방식으로 표면에 여러 무늬 모양을 성형하고 있으나, 이러한 방식은 제품을 성형하는 사출 성형과정이 이루어진 다음에 표면에 무늬모양을 형성하기 위한 별도의 성형과정을 거쳐야만 하므로 작업성이나 생산성이 떨어지고 거의 수작업에 의존하게 되므로 동일한 제품의 반복재생산이 용이하지 아니한 단점이 있다.In general, various conventional injection molded products do not mold the pattern directly on the surface during the injection molding process, but only various patterns on the surface by thermal transfer using a spray coating method or a silk screen printing method or a pre-printed film. However, this method requires a separate molding process for forming a pattern on the surface after the injection molding process for molding the product, so that workability or productivity decreases and almost depends on manual labor. There is a disadvantage that iterative reproduction is not easy.
본 발명은 이러한 종래의 문제를 해소하기 위하여 제품을 사출성형하기 위한 금형의 제작과정에서 제품의 표면의 무늬 모양과 일치하도록 미세 요철부 형태의 무늬모양부를 미리 형성하여 제품의 사출 성형과정에서 표면의 무늬 모양도 동시에 성형이 이루어지도록 함으로써 작업성, 생산성, 동일성의 향상에 그 특징이 있다.The present invention in order to solve such a conventional problem in the manufacturing process of the mold for injection molding of the product to form a pattern shape of the fine concavo-convex portion to match the pattern of the surface of the product in advance to the surface of the product during the injection molding process The pattern is also formed at the same time, which is characterized by improvement in workability, productivity and identity.
Description
본 발명은 표면에 무늬모양을 갖는 사출 성형제품 및 그 성형방법에 관한 것으로, 특히 표면에 미세한 요철 형태의 무늬 모양을 갖도록 사출 성형한 제품을 성형하기 위한 성형방법에 관한 것이다.The present invention relates to an injection molded product having a pattern on the surface and a molding method thereof, and more particularly to a molding method for molding an injection molded product to have a fine concavo-convex pattern on the surface.
일반적으로 종래의 다양한 사출성형제품은 표면에 사출 성형과정에서 직접 무늬모양을 성형하지 아니하고, 단지 스프레이 코팅 방식 또는 실크스크린에 의한 인쇄 방식이나 미리 인쇄한 필름을 이용하여 열전사방식으로 표면에 여러 무늬 모양을 성형하고 있다.In general, various conventional injection molded products do not mold the pattern directly on the surface during the injection molding process, but only various patterns on the surface by thermal transfer using a spray coating method or a silk screen printing method or a pre-printed film. Molding shape.
그러나, 이러한 종래의 여러 방식은 공통적으로 제품을 성형하는 사출 성형과정이 이루어진 다음에 비로서 표면에 무늬모양을 형성하기 위한 별도의 성형과정을 거치게 되고, 즉 제품 자체를 제작하는 성형과정과 제품의 표면에 무늬 모양을 형성하는 무늬형성과정이 별도로 각각 이루어지게 되므로, 작업성이나 생산성이 떨어지게 되는 단점과 함께, 이들 무늬형성작업은 거의 수작업에 의존하게 되므로 숙련공이라 하더라도 동일한 제품의 반복재생산이 용이하지 아니한 단점이 있다.However, these conventional methods have a separate molding process for forming a pattern on the surface after the injection molding process for forming a product in common, that is, the molding process and the product of manufacturing the product itself Since the pattern forming process of forming a pattern on the surface is performed separately, the workability and productivity are deteriorated, and these pattern forming operations are almost dependent on manual work, so even a skilled worker is not easy to reproduce the same product. There is no disadvantage.
또한, 이러한 종래의 성형방식은 무늬모양의 성형 부위가 견고하지 못하여 쉽게 외부로부터 손상이 발생할 수 있어 결함이나 흠이 발생하게 되며, 제품의 표면의 구조적인 특성상 복잡한 경우나 넓은 범위에 걸쳐 고르게 동시에 형성하고자 하는 경우엔 작업이 어려운 난점과 함께 동일한 제품의 생산은 더 더욱 어려워지게 되는 문제점을 안고 있다.In addition, such a conventional molding method is difficult to cause damage from the outside due to the inability to form a pattern-shaped molding portion, and defects or blemishes are generated, and evenly formed at the same time evenly over a wide range of complex cases due to the structural characteristics of the surface of the product. If you want to have the difficulty of working with the production of the same product has a problem that becomes more difficult.
본 발명은 이러한 종래의 문제를 해소하기 위하여 연구 개발 된 것이다.The present invention has been researched and developed to solve this conventional problem.
본 발명의 목적은 제품을 생산하기 위한 사출 성형 과정에서 제품의 표면에 형성하고자 하는 무늬 모양도 동시에 형성할 수 있도록 하여 종래에 비하여 작업공정을 보다 단순화시키고 제품의 작업성과 생산성을 크게 향상시키면서 표면에 형성하는 무늬 모양도 제품마다 동일하게 형성할 수 있도록 하고자 하는데 있다.An object of the present invention is to simultaneously form a pattern to be formed on the surface of the product in the injection molding process for producing a product to simplify the work process and improve the workability and productivity of the product significantly compared to the conventional It is intended to form the same pattern for each product to be formed.
본 발명의 다른 목적은 표면의 무늬 모양을 제품의 표면에 직접 미세한 요철부의 형태로 사출 성형하여 보다 견고하게 형성할 수 있고, 제품의 표면에 있어서 형성하고자 하는 무늬 모양의 면적이 넓거나 좁거나에 관계 없이 고르게 사출 성형이 가능하여 고른 품질의 유지가 가능하고 사출성형에 의하여 생산되는 여러 제품에 걸쳐 광범위하게 적용할 수 있도록 하고자 하는데 있다.Another object of the present invention can be formed by injection molding the surface pattern in the form of fine concavo-convex portion directly on the surface of the product more firmly, the area of the pattern to be formed on the surface of the product is wide or narrow Irrespective of the need for injection molding, it is possible to maintain even quality and to be widely applied to various products produced by injection molding.
본 발명은 전술한 목적을 달성하기 위하여, 수지를 원재료로 하여 사출성형을 행하여 다양한 형태의 사출 성형제품을 제조하는 성형방법에 있어서, 제품을 사출 성형하기 위한 금형의 표면에 제품의 표면 무늬모양부를 성형하기 위한 표면성형부를 형성하되 1차 및 2차 부식가공 방식에 의하여 미세요철부를 갖는 표면성형부를 가공 형성하고, 제품의 사출 성형과정에서 상기 표면성형부를 갖는 금형에 의하여 제품의 표면에 미세한 요철부를 형성하여 원하는 표면 무늬모양부를 동시에 성형하여 이루어지는 사출성형방법을 제공한다.In order to achieve the above object, the present invention provides a molding method of manufacturing injection molded products of various forms by injection molding a resin as a raw material, the surface pattern of the product on the surface of the mold for injection molding the product Forming a surface shaping part for molding, but processing and forming a surface shaping part having an uneven part by primary and secondary corrosion processing methods, and fine uneven part on the surface of the product by a mold having the surface shaping part in the injection molding process of the product. It provides an injection molding method formed by molding the desired surface pattern at the same time.
삭제delete
이하, 첨부된 도면에 의하여 본 발명에 대하여 보다 상세히 살펴보기로 한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
즉, 본 발명인 성형제품에 의하면, 도1 및 도2에 도시한 바와 같이, 공통적으로 수지를 원재료로 하여 사출성형이 이루어지는 다양한 형태의 사출 성형제품에 있어서, 제품(1)의 표면에 미세한 요철부(3)를 형성하여 원하는 표면 무늬모양부(5)를 성형하되, 제품의 사출 성형과정에서 상기 표면 무늬모양부(5)를 동시에 성형하여 이루어진다.That is, according to the molded article of the present invention, as shown in Figs. 1 and 2, in the injection molding products of various forms in which injection molding is commonly performed by using resin as a raw material, minute uneven portions are formed on the surface of the product (1). (3) is formed to form the desired surface pattern portion 5, but is made by simultaneously molding the surface pattern portion 5 in the injection molding process of the product.
또한, 본 발명인 이러한 제품을 제조하는 방법에 의하면, 공통적으로 수지를 원재료로 하여 사출성형을 행하여 다양한 형태의 사출 성형제품을 제조하는 성형방법에 있어서, 제품을 사출 성형하기 위한 금형의 표면에 제품의 표면 무늬모양부를 성형하기 위한 표면성형부를 형성하되 1차 및 2차 부식가공 방식에 의하여 미세요철부를 갖는 표면성형부를 가공 형성하고, 제품의 사출 성형과정에서 상기 표면성형부를 갖는 금형에 의하여 제품의 표면에 미세한 요철부를 형성하여 원하는 표면 무늬모양부를 동시에 성형하여 이루어지게 된다.In addition, according to the method for producing such a product of the present invention, in a molding method in which injection molding is performed by using a resin as a raw material to produce various injection molded products, the product is formed on the surface of a mold for injection molding the product. Forming a surface shaping part for molding the surface pattern shape, processing and forming a surface shaping part having a fine concave part by primary and secondary corrosion processing methods, and the surface of the product by the mold having the surface shaping part in the injection molding process of the product. By forming a fine concave-convex on the desired surface pattern is made by molding at the same time.
즉, 금형의 제조시에 한쌍의 금형중 제품의 외측 표면부를 성형하게 되는 외측금형을 제조하는 공정을 살펴보면, 기본적인 금형의 형태로 가공을 행한 상태에서 표면을 연마처리하는 래핑가공 과정을 거쳐 래핑 가공된 표면에 감광제를 도포하고 패턴을 형성하기 위한 필름을 부착하고 노광기에 의하여 1차로 패턴을 래핑연마면에 형성하는 1차 버닝 공정과, 금형의 표면에 부착된 필름을 떼어내고 에칭액에 침지시켜 1차로 부식가공을 행하는 1차 에칭공정과, 상기 1차 에칭공정에서 부식가공된 금형을 세척하고 건조시킨 다음 1차 부식가공된 표면에 감광제를 도포하고 패턴을 형성하기 위한 필름을 부착시킨 후에 노광기에 의하여 2차로 패턴을 형성하는 2차 버닝 공정과, 금형의 표면에 부착된 필름을 떼어내고 에칭액에 침지시켜 2차로 부식가공을 행하는 2차 에칭공정과, 상기 2차 에칭공정에서 부식가공된 금형을 세척하고 건조한 다음 금형을 완성시키게 된다.In other words, the process of manufacturing the outer mold that forms the outer surface portion of the product of the pair of molds during the manufacture of the mold, the lapping process through the lapping process to polish the surface in the state of processing in the form of a basic mold A first burn process for applying a photoresist to the surface of the formed surface, attaching a film for forming a pattern, and forming the pattern on the lapping polishing surface first by an exposure machine; and removing the film attached to the surface of the mold and immersing it in an etching solution. After the primary etching process for corrosive processing by car, and the mold which has been corroded in the primary etching process is washed and dried, a photoresist is applied to the surface subjected to the primary corrosion process and a film for forming a pattern is attached to the exposure machine. Secondary burning process to form the pattern by the second process, and the film attached to the surface of the mold is peeled off and immersed in the etching solution to carry out secondary corrosion processing. The secondary etching process, and the corrosion-processed mold in the secondary etching process is washed and dried to complete the mold.
이때, 상기 래핑가공시엔 금형의 표면에 입도 180 내지 350의 지석을 이용하여 먼저 연마가공을 행하고 입도 500 내지 800의 파우더를 이용하여 면과 같은 부드러운 섬유를 이용하여 2차 연마가공을 행한 다음, 입도가 더욱 가는 다이아몬드 파우더가 도포된 페이퍼를 이용하여 연마처리하여 경면 사상처리를 행한다.At this time, during lapping, the surface of the mold is first ground using a grindstone having a particle size of 180 to 350, and then subjected to secondary polishing using a soft fiber such as cotton using a powder having a particle size of 500 to 800, and then the particle size. Polishing is performed using paper coated with a thinner diamond powder to perform mirror finishing.
상기 에칭공정에서는 버닝공정에서 래핑된 면에 감광제를 고르게 회전도포하고 온도가 90 내지 95℃에서 120초동안 건조시킨 후에 패턴을 형성하기 위한 필름을 부착하고 노광기에서 40초동안 노광시킨 다음 상기 필름을 제거하고 금형을 에칭액에 90초 동안 침지시켜 필름의 패턴을 그대로 현상시킨다.In the etching process, a photosensitive agent is evenly coated on the surface wrapped in the burning process, dried at a temperature of 90 to 95 ° C. for 120 seconds, and then a film for forming a pattern is attached and exposed to the exposure machine for 40 seconds, and then the film is exposed. The mold is removed and the mold is immersed in the etchant for 90 seconds to develop the pattern of the film as it is.
이와 같이, 작업이 완료되게 되면 금형의 부식면을 제2염화철과 가성소다가 혼합된 액체를 스폰지나 부드러운 헝겊에 묻혀 골고루 닦아 낸다.As such, when the operation is completed, evenly wipe the corrosion surface of the mold with a sponge or a soft cloth with a liquid mixed with ferric chloride and caustic soda.
이와 같은 작업이 완료되면 금형의 표면에 형성되는 부식 깊이가 1,2차 에칭공정을 거치면서 10 내지 25㎛를 유지하게 되고, 금형 내부에서 사출 성형되는 사출제품의 표면엔 균일한 휘도에 의하여 선명한 패턴이 형성되게 된다.When the above work is completed, the corrosion depth formed on the surface of the mold is maintained at 10 to 25 μm through the first and second etching processes, and the surface of the injection molded product that is injection molded inside the mold is vivid due to the uniform brightness. The pattern is formed.
그리하여 제품의 성형시엔 통상의 사출성형기에 상기와 같이 표면성형부를 갖춘 상태로 제작된 금형을 장착하고 제품의 사출 성형이 이루어지게 되고, 이와 같이 사출 성형이 이루어지는 과정에서 사출제품의 표면엔 선명한 패턴의 무늬모양부가 동시에 성형이 이루어지게 되는 것이다.Thus, during the molding of the product, a mold manufactured with the surface molding part is mounted in a conventional injection molding machine, and the injection molding of the product is performed. In this process, the surface of the injection product has a clear pattern The pattern is to be molded at the same time.
이상 살펴본 바와 같이, 본 발명에 의하면, 제품을 생산하기 위한 사출 성형 과정에서 제품의 표면에 형성하고자 하는 무늬 모양도 동시에 형성할 수 있도록 하여 종래에 비하여 작업공정을 보다 단순화시키고 제품의 작업성과 생산성을 크게 향상시키면서 표면에 형성하는 무늬 모양도 제품마다 동일하게 형성할 수 있게 된다.As described above, according to the present invention, it is possible to simultaneously form a pattern to be formed on the surface of the product in the injection molding process for producing the product to simplify the work process and improve the workability and productivity of the product as compared to the conventional The pattern shape formed on the surface can be formed identically for each product while greatly improving.
또한, 표면의 무늬 모양을 제품의 표면에 직접 미세한 요철부의 형태로 사출 성형하여 보다 견고하게 형성할 수 있고, 제품의 표면에 있어서 형성하고자 하는 무늬 모양의 면적이 넓거나 좁거나에 관계 없이 고르게 사출 성형이 가능하여 고른 품질의 유지가 가능하고 사출성형에 의하여 생산되는 여러 제품에 걸쳐 광범위하게 적용할 수 있는 등 우수한 효과를 갖는다.In addition, it is possible to form the surface pattern by injection molding directly into the surface of the product in the form of fine concave-convex portion more firmly, and evenly injected regardless of whether the area of the pattern to be formed on the surface of the product is wide or narrow Molding is possible, so that it is possible to maintain even quality and can be widely applied to various products produced by injection molding.
도1은 본 발명에 의하여 완성된 제품의 바람직한 일례로서의 외관을 보여주는 사시도,1 is a perspective view showing the appearance as a preferred example of the finished product according to the present invention,
도2는 도1의 요부 확대 종단면도,2 is an enlarged longitudinal sectional view of the main portion of FIG. 1;
도3은 본 발명에 의한 성형방법중 바람직한 일례를 예시한 공정도.Figure 3 is a process diagram illustrating a preferred example of the molding method according to the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
1: 제품, 3: 요철부, 5: 무늬 모양부1: product, 3: irregularities, 5: pattern
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| WO2022191548A1 (en) * | 2021-03-09 | 2022-09-15 | 주식회사 엘지화학 | Injection mold |
| WO2022191549A1 (en) * | 2021-03-09 | 2022-09-15 | 주식회사 엘지화학 | Injection mold |
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| KR20080026298A (en) * | 2006-09-20 | 2008-03-25 | 엘지전자 주식회사 | Injection molded product |
| KR101344093B1 (en) * | 2006-09-20 | 2014-01-15 | 엘지전자 주식회사 | Injection molded product |
| KR101353293B1 (en) * | 2012-03-05 | 2014-01-23 | 박제현 | Hair line Mold of 3-Dimension Curved Surface or Plane Design and Method of Manufacturing Thereof |
| KR102639810B1 (en) * | 2023-11-22 | 2024-02-21 | 이형진 | Mold surface treatment method for hairline pattern forming |
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| KR20030074969A (en) | 2003-09-22 |
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