KR20110000288A - Antistatic pellet which is coated with conductive material and method for producing the pellet - Google Patents

Antistatic pellet which is coated with conductive material and method for producing the pellet Download PDF

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KR20110000288A
KR20110000288A KR1020090057717A KR20090057717A KR20110000288A KR 20110000288 A KR20110000288 A KR 20110000288A KR 1020090057717 A KR1020090057717 A KR 1020090057717A KR 20090057717 A KR20090057717 A KR 20090057717A KR 20110000288 A KR20110000288 A KR 20110000288A
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South Korea
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pellet
antistatic
pellets
basic
adhesive
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KR1020090057717A
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Korean (ko)
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조규남
윤종형
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주식회사 이에스디웍
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Publication of KR20110000288A publication Critical patent/KR20110000288A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/26—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment
    • C09J123/28—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/16—Anti-static materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • B29B2009/163—Coating, i.e. applying a layer of liquid or solid material on the granule
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/40—Electric properties

Abstract

PURPOSE: An antistatic pellet is provided to ensure foaming ability and surface resistance suitable for packaging of an electronic component and to reduce manufacturing costs by applying conductive materials using adhesives to the surface of a basic pellet including polypropylene. CONSTITUTION: A method for preparing an antistatic pellet comprises: a base pellet preparation step for preparing granule base pellet(10) by extruding a synthetic resin composition including polypropylene; an adhesive coating step for applying adhesives to the surface of the base pellet by mixing the base pellet with adhesive(20); and a conductive material coating step for applying conductive material(30) to surface of the base pellet.

Description

전도성 물질이 코팅된 대전방지용 펠릿 및 그 제조 방법{Antistatic pellet which is coated with conductive material and method for producing the pellet}Antistatic pellets coated with a conductive material and a method for manufacturing the same {Antistatic pellet which is coated with conductive material and method for producing the pellet}

본 발명은 발포성이 우수하고 제조비용이 감소하며, 최종제품인 대전방지용 성형품이 전자부품의 내포장에 적합한 표면저항을 가지도록 하는 대전방지용 펠릿 및 그 제조 방법에 관한 것이다.The present invention relates to an antistatic pellet and a method of manufacturing the same so that the foamability is excellent, the manufacturing cost is reduced, and the antistatic molded article, which is a final product, has a surface resistance suitable for packaging the electronic parts.

대전방지용 펠릿(pellet)은, 대전방지용 성형품을 제조하기 위하여 사용되는 합성수지 조성물로서, 작은 알갱이 형상을 가지고 있다. 이러한 펠릿은 발포된 후, 압축성형 공정 등을 통하여 대전방지용 성형품으로 제조되는 게 일반적인데, 어떠한 용도를 가지는 성형품이냐에 따라서, 최종 성형품의 요구되는 표면저항이 달라지며, 이러한 최종 성형품의 표면저항은 결국 원재료인 대전방지용 펠릿의 표면저항 값에 의하여 결정된다.An antistatic pellet is a synthetic resin composition used for producing an antistatic molded article, and has a small grain shape. After the pellets are foamed, they are generally manufactured as an antistatic molded article through a compression molding process. Depending on the purpose of the molded article, the required surface resistance of the final molded article is changed. Eventually it is determined by the surface resistance value of the antistatic pellets as a raw material.

종래의 대전방지용 펠릿으로서, 계면활성제가 내첨된 펠릿이 사용되기도 하였는데, 이 펠릿은 폴리프로필렌을 포함하는 합성수지 조성물을 용융한 후, 대전방지제인 계면활성제를 첨가하고, 상기 계면활성제가 첨가된 합성수지 조성물을 알갱이 형상으로 제조한 것이다.As a conventional antistatic pellet, a pellet with a surfactant embedded therein has been used. The pellet is a synthetic resin composition in which a synthetic resin composition containing polypropylene is melted, and then a surfactant as an antistatic agent is added, and the surfactant is added. It is manufactured in the form of granules.

그러나, 이렇게 계면활성제가 펠릿의 내부에 내첨된 펠릿을 발포하여 대전방지용 성형품을 제조하는 경우, 상기 성형품의 표면 저항이 1011 Ω/sq 정도로 높게 측정되어 표면 저항이 106 내지 108 Ω/sq 정도로 요구되는 전자부품의 내포장(內包裝) 용도로는 부적당하다는 문제점이 있다.However, in the case where the surfactant foams the pellets embedded in the pellets to produce an antistatic molded article, the surface resistance of the molded article is measured to be about 10 11 Ω / sq and the surface resistance is 10 6 to 10 8 Ω / sq. There is a problem that it is unsuitable for the use of the inner packaging of the electronic component required to the extent.

이러한 고저항의 문제점을 해결하고자, 카본블랙이 내첨된 펠릿이 사용되기도 하였는데, 이 펠릿은 폴리프로필렌을 포함하는 합성수지 조성물을 용융한 후, 전도성 물질인 카본블랙을 첨가하고, 상기 카본블랙이 첨가된 합성수지 조성물을 알갱이 형상으로 제조한 것이다.In order to solve the problem of high resistance, pellets containing carbon black embedded therein have been used. The pellets are melted synthetic resin composition containing polypropylene, and then carbon black, which is a conductive material, is added, and the carbon black is added. The synthetic resin composition is prepared in a granular form.

그러나, 이렇게 카본블랙이 펠릿의 내부에 내첨된 펠릿을 발포하여 대전방지용 성형품을 제조하는 경우, 상기 성형품의 표면 저항이 103 Ω/sq 정도로 낮아서, 대전방지기능이 거의 없으므로, 전자부품의 내포장 용도로는 부적당하다는 문제점이 있다. However, when the carbon black foams pellets embedded in the pellets to produce an antistatic molded article, the surface resistance of the molded article is about 10 3 Ω / sq, so that there is almost no antistatic function. There is a problem that it is inappropriate for use.

또한, 상기 카본블랙 내첨형 펠릿의 경우, 무기질인 카본블랙이 전체 펠릿 중량의 20% 정도 투입되기도 하는데, 이렇게 높은 함량의 카본블랙으로 인하여 펠릿의 발포성이 저하된다는 문제점도 있으며, 고가인 카본블랙의 투입량이 비교적 높아서 펠릿 제조비용이 증가한다는 문제점도 있다.In addition, in the case of the carbon black internal pellets, the inorganic carbon black may be added to about 20% of the total pellet weight, and the foaming property of the pellet is also lowered due to the high content of carbon black. There is also a problem that the input amount is relatively high, the pellet manufacturing cost increases.

본 발명은 상기 문제를 해결하기 위해 안출된 것으로서, 그 목적은 발포성이 우수하고 제조비용이 감소하며, 최종제품인 대전방지용 성형품이 전자부품의 내포장에 적합한 표면저항을 가질 수 있도록 구조가 개선된 대전방지용 펠릿을 제공하기 위함이다.The present invention has been made to solve the above problems, the object of the present invention is to improve the structure so that the excellent foamability, manufacturing cost is reduced, and the antistatic molded article as a final product has a surface resistance suitable for the packaging of electronic components To provide a preventive pellet.

본 발명의 다른 목적은 상술한 대전방지용 펠릿의 제조 방법을 제공하기 위함이다.Another object of the present invention is to provide a method for producing the antistatic pellets described above.

상기 목적을 달성하기 위하여 본 발명에 따른 대전방지용 펠릿은, 대전방지용 성형품을 제조하기 위하여 사용되는 대전방지용 펠릿(pellet)에 있어서, 폴리프로필렌을 포함하는 합성수지 조성물로 제조되며, 알갱이 형상을 가지는 기본펠릿; 상기 기본펠릿의 표면에 도포되는 접착제; 상기 접착제의 표면에 부착되는 전도성 물질;을 포함하여 구성되는 특징을 갖는다. In order to achieve the above object, the antistatic pellet according to the present invention is an antistatic pellet used to prepare an antistatic molded article, which is made of a synthetic resin composition containing polypropylene, and has a pellet having a granular shape. ; An adhesive applied to the surface of the basic pellets; It has a feature that comprises a; conductive material attached to the surface of the adhesive.

또한, 상기 다른 목적을 달성하기 위한 본 발명에 따른 제조 방법은, 대전방지용 성형품을 제조하기 위하여 사용되는 대전방지용 펠릿을 제조하는 방법에 있어서, 폴리프로필렌을 포함하는 합성수지 조성물을 압출하여 알갱이 형상의 기본펠릿을 제조하는 기본펠릿 제조 단계; 상기 기본펠릿에 접착제를 투입하여 혼합함으로써, 상기 기본펠릿의 표면에 접착제를 도포하는 접착제 도포 단계; 상기 접착제가 도포된 기본펠릿에 전도성 물질을 투입하여 혼합함으로써, 상기 기본펠릿의 표면에 전도성 물질을 코팅하는 전도성 물질 코팅 단계;를 구비하는 특징을 갖는다. In addition, the production method according to the present invention for achieving the above another object, in the method for producing an antistatic pellets used to produce an antistatic molded article, by extruding a synthetic resin composition containing polypropylene granular base Basic pellet manufacturing step of producing the pellet; An adhesive coating step of applying an adhesive to the surface of the basic pellet by injecting and mixing an adhesive into the basic pellet; And a conductive material coating step of coating the conductive material on the surface of the basic pellet by mixing the conductive material by adding the conductive material to the basic pellet coated with the adhesive.

본 발명에 따르면, 폴리프로필렌을 포함하는 기본펠릿의 표면에 접착제를 이용하여 전도성 물질을 코팅함으로써, 발포성이 우수하고 제조비용이 감소하며, 최종제품인 대전방지용 성형품이 전자부품의 내포장에 적합한 표면저항을 가지도록 하는 효과가 있다.According to the present invention, by coating a conductive material with an adhesive on the surface of the basic pellets containing polypropylene, excellent foamability and reduced manufacturing cost, the antistatic molded article as a final product surface resistance suitable for the packaging of electronic components It is effective to have.

이하에서, 첨부된 도면들을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일 실시예에 따른 대전방지용 펠릿의 단면도이며, 도 2는 도 1에 도시된 대전방지용 펠릿들을 사용하여 제조된 대전방지용 성형품의 단면도이다. 도 3은 도 1에 도시된 대전방지용 펠릿의 제조 방법의 일례를 설명하기 위한 흐름도이다.1 is a cross-sectional view of an antistatic pellet according to an embodiment of the present invention, Figure 2 is a cross-sectional view of an antistatic molded article manufactured using the antistatic pellets shown in FIG. 3 is a flowchart for explaining an example of a method for manufacturing the antistatic pellet shown in FIG.

도 1 내지 도 3을 참조하면, 본 발명의 바람직한 실시예에 따른 대전방지용 펠릿(pellet)(100)은, 대전방지용 성형품(9)을 제조하기 위하여 사용되는 재료로서, 기본펠릿(10)과, 접착제(20)와, 전도성 물질(30)을 포함하여 구성된다. 1 to 3, an antistatic pellet 100 according to a preferred embodiment of the present invention is a material used to manufacture an antistatic molded article 9, the base pellet 10, And an adhesive 20 and a conductive material 30.

상기 기본펠릿(10)은, 폴리프로필렌(PP; polypropylene)을 포함하는 합성수지 조성물로 제조되며, 알갱이 형상을 가지는 것으로서, 본 실시예에서는, 110 내지 130 중량부의 기본펠릿(10)이 사용된다.The basic pellet 10 is made of a synthetic resin composition containing polypropylene (PP; polypropylene), and has a granular shape. In this embodiment, 110 to 130 parts by weight of the basic pellet 10 is used.

상기 접착제(20)는, 상기 기본펠릿(10)의 표면에 도포되는 접착 성분으로서, 본 실시예에서는, 0.1 내지 0.3 중량부의 염화폴리프로필렌(CPP; chlorinated polypropylene)이 사용된다.The adhesive 20 is an adhesive component applied to the surface of the basic pellet 10. In this embodiment, 0.1 to 0.3 parts by weight of chlorinated polypropylene (CPP) is used.

상기 전도성 물질(30)은, 전기 전도성을 가지는 물질로서, 상기 접착제(20)의 표면에 부착된다. 상기 전도성 물질(30)은, 예컨대, 천연인상흑연, 천연토상흑연, 인조흑연, 탄소섬유, 카본블랙 및 그래파이트로 이루어지는 군으로부터 선택되는 하나 이상의 전도성 물질일 수 있으나, 본 실시예에서는, 0.1 내지 0.3 중량부의 카본블랙이 사용된다.The conductive material 30 is an electrically conductive material and is attached to the surface of the adhesive 20. The conductive material 30 may be, for example, at least one conductive material selected from the group consisting of natural phosphate graphite, natural earth graphite, artificial graphite, carbon fiber, carbon black, and graphite, in the present embodiment, 0.1 to 0.3 Weight parts of carbon black are used.

이하에서는, 상기 대전방지용 펠릿(100)의 제조 방법의 일례에 대하여 상세히 설명하기로 한다.Hereinafter, an example of the manufacturing method of the antistatic pellet 100 will be described in detail.

상기 대전방지용 펠릿(100)의 제조 방법은, 기본펠릿 제조 단계(S100)와, 접착제 도포 단계(S200)와, 전도성 물질 코팅 단계(S300)와, 건조 단계(S400)를 포함하여 구성된다.The method of manufacturing the antistatic pellets 100 includes a basic pellet manufacturing step (S100), an adhesive coating step (S200), a conductive material coating step (S300), and a drying step (S400).

상기 대전방지용 펠릿(100)을 제조하기 위해서는, 먼저 폴리프로필렌을 포함하는 합성수지 조성물을 용융시켜서 압출기로 압출하고, 상기 압출된 합성수지 조성물을 냉각시킨 후 적절한 크기로 절단하여, 도 1에 도시된 바와 같이, 알갱이 형상의 기본펠릿(10)을 제조한다. (기본펠릿 제조 단계 S100)In order to manufacture the antistatic pellet 100, first melt the synthetic resin composition containing polypropylene and extruded by an extruder, and then cooled to the appropriate size after cooling the extruded synthetic resin composition, as shown in Figure 1 , To prepare a pellet-shaped basic pellets (10). (Basic pellet manufacturing step S100)

상기 기본펠릿 제조 단계에서 제조된 기본펠릿(10)을 깨끗이 세척하고 건조시킨 후에, 덤블러믹서에 110 내지 130 중량부의 기본펠릿(10)을 투입하고, 0.1 내지 0.3 중량부의 접착제(20)를 투입한 후, 15분 가량 상기 덤블러믹서를 가동시킴으로써, 상기 기본펠릿(10)의 표면에 접착제(20)인 염화폴리프로필렌(CPP)를 골고 루 도포한다. After washing and drying the basic pellets 10 prepared in the basic pellets manufacturing step, 110 to 130 parts by weight of the basic pellets 10 are added to the dumbler mixer, and 0.1 to 0.3 parts by weight of the adhesive 20 is added. After that, by running the tumbler mixer for about 15 minutes, the polypropylene chloride (CPP), which is the adhesive 20, is evenly applied to the surface of the basic pellet 10.

여기서, 상기 접착제(20)가 0.1 중량부 미만으로 투입되면 접착력이 저하되고, 상기 접착제(20)가 0.3 중량부 초과하여 투입되면 상기 접착제(20)가 상기 기본펠릿(10)의 표면에 도포되고도 남는다는 문제점이 있다. Here, the adhesive force is lowered when the adhesive 20 is added less than 0.1 parts by weight, and when the adhesive 20 is added more than 0.3 parts by weight, the adhesive 20 is applied to the surface of the basic pellet 10 There is also a problem that remains.

본 실시예에서 상기 접착제(20)로 사용되는 염화폴리프로필렌은 폴리프로필렌과의 접착성이 매우 높은 물질이므로, 상기 기본펠릿(10)의 표면에 특별한 표면처리를 하지 아니하고도 높은 접착력을 가진다는 장점이 있다. (접착제 도포 단계 S200)In this embodiment, since the polypropylene chloride used as the adhesive 20 has a very high adhesiveness with polypropylene, the polypropylene chloride has a high adhesive strength without a special surface treatment on the surface of the basic pellet 10. There is this. (Adhesive Application Step S200)

상기 접착제 도포 단계에서 15분 가량 혼합된 상기 기본펠릿(10)과 접착제(20)에, 0.1 내지 0.3 중량부의 카본블랙(30)을 투입한 후, 10분 가량 상기 덤블러믹서를 가동시킴으로써, 상기 카본블랙(30)이 상기 접착제(20)에 부착되도록 한다. 따라서, 상기 기본펠릿(10)의 표면에 카본블랙(30)이 코팅된다.Into the base pellet 10 and the adhesive 20, which is mixed for about 15 minutes in the adhesive coating step, 0.1 to 0.3 parts by weight of carbon black 30 is added, and then the dumbler mixer is operated for about 10 minutes. The carbon black 30 is attached to the adhesive 20. Therefore, the carbon black 30 is coated on the surface of the basic pellet 10.

여기서, 상기 카본블랙(30)이 0.1 중량부 미만으로 투입되면 전기 전도성이 저하되고, 상기 카본블랙(30)이 0.3 중량부 초과하여 투입되면, 상기 카본블랙(30)이 상기 기본펠릿(10)의 표면에 코팅되고도 남는다는 문제점이 있다. (전도성 물질 코팅 단계 S300)Here, when the carbon black 30 is added less than 0.1 parts by weight, the electrical conductivity is lowered, and when the carbon black 30 is added more than 0.3 parts by weight, the carbon black 30 is the basic pellet 10 There is a problem that it remains on the surface of the coating. (Conductive Material Coating Step S300)

상기 전도성 물질 코팅 단계에서 상기 카본블랙(30)을 상기 기본펠릿(10)의 표면에 코팅한 후, 열풍기를 80℃의 온도로 40분 정도 가동시킴으로써, 카본블랙(30)이 코팅된 기본펠릿(10)을 건조시킨다. 이렇게 열풍기를 이용하여 건조하면, 자연 건조에 비하여 건조 시간을 단축시킬 수 있다는 효과가 있다. (건조 단계 S400)After coating the carbon black 30 on the surface of the basic pellet 10 in the conductive material coating step, by operating the hot air fan at a temperature of 80 ℃ for about 40 minutes, the basic pellet coated with carbon black 30 ( 10) is dried. When dried using a hot air like this, there is an effect that the drying time can be shortened compared to natural drying. (Drying step S400)

상술한 단계를 수행하면, 상기 대전방지용 펠릿(100)의 제조가 완료된다. 본 실시예에서 제조된 대전방지용 펠릿(100)의 표면 저항은 101 내지 102 Ω/sq으로 측정되었다.By performing the above-described steps, the production of the antistatic pellets 100 is completed. The surface resistance of the antistatic pellets 100 prepared in this example was measured to 10 1 to 10 2 Ω / sq.

이렇게 만들어진 대전방지용 펠릿(100)을 발포시킨 후, 압축성형 공정 등을 통하여 처리하면, 도 2에 도시된 바와 같은, 대전방지용 성형물(9)이 제조된다. 이 대전방지용 성형물(9)은, 다수개의 기본펠릿(10)들이 서로 인접하게 배치되어 있으며, 상기 기본펠릿(10)들 간의 경계에는 전기 전도성을 가지는 카본블랙(30)이 그물망 형태로 배치되어 있는 형상을 가진다. 따라서, 전하가 상기 그물망 형태의 카본블랙(30)을 따라서 전도될 수 있는 효과가 있다.When the antistatic pellet 100 thus made is foamed and then treated through a compression molding process or the like, an antistatic molding 9 as shown in FIG. 2 is produced. In the antistatic molding 9, a plurality of basic pellets 10 are arranged adjacent to each other, and the carbon black 30 having electrical conductivity is arranged in a mesh form at the boundary between the basic pellets 10. It has a shape. Therefore, there is an effect that the electric charge can be conducted along the carbon black 30 of the mesh form.

한편, 상기 대전방지용 성형물(9)의 표면 저항은 106 내지 108 Ω/sq으로 측정되었다. 따라서, 상기 대전방지용 펠릿(100)을 사용하여 대전방지용 성형물(9)을 제조하면, 성형품의 표면 저항이 1011 Ω/sq 정도로 높게 측정된 계면활성제 내첨형 펠릿이나 성형품의 표면 저항이 103 Ω/sq 정도로 낮게 측정된 카본블랙 내첨형 펠릿과는 달리, 상기 대전방지용 성형물(9)은 전자부품의 내포장(內包裝) 용도로 적당한 106 내지 108 Ω/sq의 표면 저항을 가지게 되는 효과가 있다.On the other hand, the surface resistance of the antistatic molding 9 was measured to 10 6 to 10 8 Ω / sq. Therefore, when the antistatic molding 9 is manufactured by using the antistatic pellet 100, the surface resistance of the surfactant-incorporated pellet or molded article whose surface resistance of the molded article is measured to be about 10 11 Ω / sq is 10 3 Ω. Unlike carbon black internal pellets measured as low as / sq, the antistatic molding 9 has an effect of having a surface resistance of 10 6 to 10 8 Ω / sq, which is suitable for packaging of electronic components. There is.

또한, 상기 대전방지용 펠릿(100)은, 카본블랙이 내첨된 종래의 펠릿과는 달리, 상기 전도성 물질(30)인 카본블랙이 상기 기본펠릿(10)의 표면에 코팅되어 있 으며 무기질인 카본블랙이 전체 펠릿 중량의 1% 이하로 투입되므로, 펠릿의 발포성이 저하되지 않는다는 효과가 있으며, 고가인 카본블랙의 투입량도 비교적 적어서 펠릿 제조비용이 감소한다는 효과도 있다.In addition, the antistatic pellets 100, unlike the conventional pellets in which carbon black is embedded, carbon black, the conductive material 30 is coated on the surface of the basic pellet 10, the inorganic carbon black Since it is added at 1% or less of the total pellet weight, there is an effect that the foamability of the pellets is not lowered, and the amount of expensive carbon black added is also relatively small, which also reduces the pellet manufacturing cost.

이상으로 본 발명을 설명하였는데, 본 발명의 기술적 범위는 상술한 실시예에 기재된 내용으로 한정되는 것은 아니며, 해당 기술 분야의 통상의 지식을 가진 자에 의해 수정 또는 변경된 등가의 구성은 본 발명의 기술적 사상의 범위를 벗어나지 않는 것임은 명백하다.The technical scope of the present invention is not limited to the contents described in the above embodiments, and the equivalent structure modified or changed by those skilled in the art can be applied to the technical It is clear that the present invention does not depart from the scope of thought.

도 1은 본 발명의 일 실시예에 따른 대전방지용 펠릿의 단면도이다.1 is a cross-sectional view of an antistatic pellet according to an embodiment of the present invention.

도 2는 도 1에 도시된 대전방지용 펠릿들을 사용하여 제조된 대전방지용 성형품의 단면도이다.2 is a cross-sectional view of an antistatic molded article manufactured using the antistatic pellets shown in FIG. 1.

도 3은 도 1에 도시된 대전방지용 펠릿의 제조 방법의 일례를 설명하기 위한 흐름도이다.3 is a flowchart for explaining an example of a method for manufacturing the antistatic pellet shown in FIG.

＊ 도면의 주요부위에 대한 부호의 설명 ＊ ＊ Explanation of symbols on major part of drawing ＊

100 : 대전방지용 펠릿 10 : 기본펠릿100: antistatic pellet 10: basic pellet

20 : 접착제 30 : 전도성 물질, 카본블랙20: adhesive 30: conductive material, carbon black

9 : 대전방지용 성형품9: antistatic molded article

Claims (5)

대전방지용 성형품을 제조하기 위하여 사용되는 대전방지용 펠릿(pellet)에 있어서,In the anti-static pellets (pellets) used to produce an antistatic molded article, 폴리프로필렌을 포함하는 합성수지 조성물로 제조되며, 알갱이 형상을 가지는 기본펠릿;Basic pellets made of a synthetic resin composition comprising a polypropylene, having a granular shape; 상기 기본펠릿의 표면에 도포되는 접착제;An adhesive applied to the surface of the basic pellets; 상기 접착제의 표면에 부착되는 전도성 물질;A conductive material attached to the surface of the adhesive; 을 구비하는 것을 특징으로 하는 대전방지용 펠릿.Antistatic pellets characterized in that it comprises a. 제 1항에 있어서,The method of claim 1, 상기 기본펠릿 110 내지 130 중량부와, 상기 접착제 0.1 내지 0.3 중량부와, 상기 전도성 물질 0.1 내지 0.3 중량부를 포함하는 것을 특징으로 하는 대전방지용 펠릿.An antistatic pellet comprising 110 to 130 parts by weight of the basic pellets, 0.1 to 0.3 parts by weight of the adhesive and 0.1 to 0.3 parts by weight of the conductive material. 제 1항에 있어서,The method of claim 1, 상기 접착제는 염화폴리프로필렌(chlorinated polypropylene)인 것을 특징으로 하는 대전방지용 펠릿.The adhesive is an antistatic pellet, characterized in that the chlorinated polypropylene (chlorinated polypropylene). 대전방지용 성형품을 제조하기 위하여 사용되는 대전방지용 펠릿을 제조하는 방법에 있어서,In the method for manufacturing the antistatic pellets used to manufacture the antistatic molded article, 폴리프로필렌을 포함하는 합성수지 조성물을 압출하여 알갱이 형상의 기본펠릿을 제조하는 기본펠릿 제조 단계;A basic pellet manufacturing step of manufacturing a basic pellet having a granular shape by extruding a synthetic resin composition including polypropylene; 상기 기본펠릿에 접착제를 투입하여 혼합함으로써, 상기 기본펠릿의 표면에 접착제를 도포하는 접착제 도포 단계;An adhesive coating step of applying an adhesive to the surface of the basic pellet by injecting and mixing an adhesive into the basic pellet; 상기 접착제가 도포된 기본펠릿에 전도성 물질을 투입하여 혼합함으로써, 상기 기본펠릿의 표면에 전도성 물질을 코팅하는 전도성 물질 코팅 단계;Conductive material coating step of coating the conductive material on the surface of the basic pellet by mixing the conductive material into the base pellet coated with the adhesive; 를 구비하는 것을 특징으로 하는 대전방지용 펠릿 제조 방법.Antistatic pellet production method characterized in that it comprises a. 제 4항에 있어서,The method of claim 4, wherein 상기 전도성 물질 코팅 단계에서 상기 기본펠릿의 표면에 전도성 물질을 코팅한 후, 상기 기본펠릿을 건조시키는 건조 단계를 구비하는 것을 특징으로 하는 대전방지용 펠릿 제조 방법.After coating the conductive material on the surface of the basic pellets in the conductive material coating step, the antistatic pellets manufacturing method comprising a drying step of drying the basic pellets.
KR1020090057717A 2009-06-26 2009-06-26 Antistatic pellet which is coated with conductive material and method for producing the pellet KR20110000288A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101351360B1 (en) * 2012-03-05 2014-01-15 송재문 The fabrication method of antistatic pellet and antistatic pellet using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101351360B1 (en) * 2012-03-05 2014-01-15 송재문 The fabrication method of antistatic pellet and antistatic pellet using the same

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