KR960021466A - Manufacturing apparatus that can mold fine foam of thermoplastic resin - Google Patents

Manufacturing apparatus that can mold fine foam of thermoplastic resin Download PDF

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Publication number
KR960021466A
KR960021466A KR1019940039407A KR19940039407A KR960021466A KR 960021466 A KR960021466 A KR 960021466A KR 1019940039407 A KR1019940039407 A KR 1019940039407A KR 19940039407 A KR19940039407 A KR 19940039407A KR 960021466 A KR960021466 A KR 960021466A
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KR
South Korea
Prior art keywords
foam
die
resin
thermoplastic resin
production apparatus
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Application number
KR1019940039407A
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Korean (ko)
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KR100357653B1 (en
Inventor
김명호
유정수
윤석현
Original Assignee
성재갑
주식회사 Lg 화학
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Priority to KR1019940039407A priority Critical patent/KR100357653B1/en
Publication of KR960021466A publication Critical patent/KR960021466A/en
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Publication of KR100357653B1 publication Critical patent/KR100357653B1/en

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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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

본 발명은 열가소성 수지를 사용하여 연속적인 발포체를 성형하는 장치에 관한 것이다.The present invention relates to an apparatus for molding a continuous foam using a thermoplastic resin.

종래에도 발포체를 얻기 위하여 화학적 발포 방법을 사용하였으며 이에 의하면 화학반응에 의해 나오는 기체를 열가소성 수지 안에 잡아 둠으로써 발포체를 얻는 것이고, 물리적 발포에 의한 방법은 기핵제와 발포제를 열가소성지안에 넣어 혼련시킨다음 다이를 통과시켜 나오면서 압력을 떨어뜨려 발포체를 얻도록 하였다.Conventionally, a chemical foaming method has been used to obtain a foam. According to this, a foam is obtained by trapping a gas produced by a chemical reaction in a thermoplastic resin. The pressure was reduced as it passed through the die to obtain a foam.

이러한 대부분의 경우 기공의 발포가 상압하에서 일어나게 됨으로 가공의 크기가 수십내지 수백 마이크론으로 상당히 큰 기공 크기를 얻어내게 된다.In most of these cases, the foaming of the pores takes place under atmospheric pressure, resulting in a fairly large pore size, ranging from tens to hundreds of microns in size.

본 발명은 상기와 같이 큰 기공밖에 얻을 수 없는 기존 공정의 문제를 개선하기 위해 노력한 결과 기존 공정의 문제를 개선하여 높은 압력하에서 발포체를 형성하여 10미크론 이하의 발포셀 사이즈를 갖는 판상 및 여러형태를 갖는 발포체를 제조할 수 있도록 한 것이다.The present invention has been made to improve the problem of the existing process that can only obtain large pores as described above to improve the problem of the existing process to form a foam under high pressure to form a plate and various forms having a foam cell size of less than 10 microns It is to be able to produce a foam having.

Description

열가소성 수지의 미세 발포체를 성형할 수 있는 제조장치Manufacturing apparatus that can mold fine foam of thermoplastic resin

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도(ㄱ)은 발포체를 얻기 위한 다이 부분에서의 발포 기작,Figure 1 (a) shows the foaming mechanism at the die part for obtaining the foam,

제1도(ㄴ)은 다이스 내에서의 압력 분포도,1 (b) is a pressure distribution diagram in a die,

제2도(ㄱ)은 미세 발포체를 얻기 위한 다이 블록 형태를 보인 종단면도,Figure 2 (a) is a longitudinal cross-sectional view showing the die block form to obtain a fine foam,

제2도(ㄴ)은 A-A선 단면도, (ㄷ)은 B-B선 단면도, (ㄹ)은 C-C선 단면도, (ㅁ)은 D-D선 단면도,2 (b) is a cross-sectional view along the line A-A, (c) is a cross-section along the line B-B, (d) is a cross section along the line C-C, (ㅁ) is a cross section along the line D-D,

제3도(ㄱ)은 미세 발포체를 얻기 위한 다이 블록 부분에서의 발포 기작,3 (a) shows the foaming mechanism in the die block portion for obtaining the fine foam,

제3도(ㄴ)은 다이스 내에서의 압력 분포,3b shows the pressure distribution in the die,

제4도는 미세 발포체를 얻기 위한 제조장치의 구성을 보인 일 실시예.Figure 4 is an embodiment showing the configuration of the manufacturing apparatus for obtaining a fine foam.

Claims (6)

본온재, 혹은 경량화재로 사용하는 발포체를 제조함에 있어 다이 최종 형상을 결정하는 다이 랜드 부위(제2도(가)) 앞에 다공다이 부분(제2도(나)), 팽창다이 부분(제2도(다)), 수지 분배 유지(제2도(가)) 설치하여 발포셀의 사이즈를 적게하고 고른 분포를 얻고자 하여 다공다이를 사용함에 있어 제2도의 단면 A-A처럼 벌집모양, 혹은 원형의 다공다이를 2열, 3열 등 여러 열로 제작하여서 됨을 특징으로 하는 열가소성 수지의 미세 발포체를 성형할 수 있는 제조장치.In manufacturing the foam used as the main heating material or the lightening material, the porous die part (Fig. 2 (b)) and the expansion die part (second part) are placed before the die land part (Fig. 2 (a)) which determines the die final shape. (C)) and resin distribution maintenance (FIG. 2A) to reduce the size of foam cell and obtain a uniform distribution. A manufacturing apparatus capable of molding a fine foam of a thermoplastic resin, characterized in that the porous die is produced in a plurality of rows, such as two rows, three rows. 제1항에 있어서, 수지 분배 유로를 T-다이스로 사용하여 됨을 특징으로 하는 열가소성 수지의 미세 발포체를 성형할 수 있는 제조장치.The production apparatus according to claim 1, wherein the fine resin foam of the thermoplastic resin can be molded, wherein the resin distribution flow path is used as the T-dice. 제1항에 있어서, 수지 분배 유로를 파이프 다이스를 사용하여서 됨을 특징으로 하는 열가소성 수지의 미세 발포체를 성형할 수 있는 제조장치.The production apparatus according to claim 1, wherein the resin distribution flow path is formed using a pipe die. 제1항에 있어서, 수지 분배 유로를 이형압출 다이스를 사용하여서 됨을 특징으로 하는 열가소성 수지의 미세 발포체를 성형할 수 있는 제조장치.The manufacturing apparatus which can shape | mold the fine foam of a thermoplastic resin of Claim 1 characterized by using a release extrusion die | dye for a resin distribution flow path. 제1항에 있어서, 물리 발포를 하는 경우에 있어 발포제를 부탄가스, 탄산가스, 질소, 프레온 등을 사용하여서 됨을 특징으로 하는 열가소성 수지의 미세 발포체를 성형할 수 있는 제조장치.The production apparatus according to claim 1, wherein the foaming agent is used in the case of physical foaming using butane gas, carbon dioxide gas, nitrogen, freon, or the like. 제1항에 있어서, 화학발포로 수지내에 가스를 발생시켜 발포를 행하여서 됨을 특징으로 하는 열가소성수지의 미세 발포체를 성형할 수 있는 제조장치.The production apparatus according to claim 1, wherein the foam is formed by generating a gas in the resin by chemical foaming to foam. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940039407A 1994-12-30 1994-12-30 Apparatus for forming microcellular foam of thermoplastic resin KR100357653B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940039407A KR100357653B1 (en) 1994-12-30 1994-12-30 Apparatus for forming microcellular foam of thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940039407A KR100357653B1 (en) 1994-12-30 1994-12-30 Apparatus for forming microcellular foam of thermoplastic resin

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KR960021466A true KR960021466A (en) 1996-07-18
KR100357653B1 KR100357653B1 (en) 2003-02-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100792233B1 (en) * 2005-11-30 2008-01-07 주식회사 엘지화학 A microcellular foam of thermoplastic resin prepared with a die having improved cooling property
US8398904B2 (en) 2005-11-30 2013-03-19 Lg Chem, Ltd. Microcellular foam of thermoplastic resin prepared with die having improved cooling property and method for preparing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100792233B1 (en) * 2005-11-30 2008-01-07 주식회사 엘지화학 A microcellular foam of thermoplastic resin prepared with a die having improved cooling property
US8398904B2 (en) 2005-11-30 2013-03-19 Lg Chem, Ltd. Microcellular foam of thermoplastic resin prepared with die having improved cooling property and method for preparing the same

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Publication number Publication date
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