KR950000359A - Injection molding method and injection molding apparatus for thermoplastic resin molded products - Google Patents
Injection molding method and injection molding apparatus for thermoplastic resin molded products Download PDFInfo
- Publication number
- KR950000359A KR950000359A KR1019930010803A KR930010803A KR950000359A KR 950000359 A KR950000359 A KR 950000359A KR 1019930010803 A KR1019930010803 A KR 1019930010803A KR 930010803 A KR930010803 A KR 930010803A KR 950000359 A KR950000359 A KR 950000359A
- Authority
- KR
- South Korea
- Prior art keywords
- resin
- injection
- thermoplastic resin
- blowing agent
- injection molding
- Prior art date
Links
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- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
본 발명은 열가소성 수지셩형품의 사출성형법 및 사출성형장치에 관한 것이다.The present invention relates to an injection molding method and an injection molding apparatus for thermoplastic resin molded articles.
본 발명은 상기와 같은 종래 방법의 문제점을 해결하기 위한 것으로, 간단한 방법으로 성형체의 표면에 씽크마크, 뒤틀림, 줄무늬 등과 같은 결함의 발생을 방지할 수 있는 성형방법과 그 장치를 제공하는 것을 목적으로 한다.The present invention is to solve the problems of the conventional method as described above, and to provide a molding method and apparatus that can prevent the occurrence of defects, such as think marks, distortions, streaks, etc. on the surface of the molded body by a simple method. do.
본 발명의 제조방법은 두꺼운 부분을 포함하는 열가소성 수지의 성형에 있어서, 주사 핀(Pin)으로 금형에 형성된 주사 홀(Hole)로 삽입시켜 수지 내부에 액상 발포제를 주입시키고, 주입된 액상 발포제가 수지의 잔존역에 의하여 발포되어 수지 내부에 동공을 형성시키는 것을 특징으로 하며, 본 발명의 제조장치는 금형의 고정부 또는 이동부에 가는 주사 핀(25)이 통과할 수 있는 주사 홀(26)이 형성된 것을 특징으로 한다.In the manufacturing method of the present invention, in the molding of a thermoplastic resin including a thick portion, the injection pin is inserted into the injection hole (Hole) formed in the mold to inject a liquid blowing agent into the resin, and the injected liquid blowing agent is a resin. It is foamed by the remaining area of the to form a pupil in the resin, characterized in that, the manufacturing apparatus of the present invention is a scanning hole 26 that can pass through the scanning pin 25 going to the fixed part or the moving part of the mold Characterized in that formed.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명에 의한 사출성형품의 한 예를 나타내는 사시도이고, 제2도는 본 발명의 방법에 사용되는 금형 및 장치 단면도이고, 제3도는 액상 발포제를 주사하는 순간의 단면도이고, 제4도는 주사장치를 이탈시킨 후 액상 발포제가 발포하는 것을 설명하기 위한 단면도이고, 제5도는 액상 발포제의 투입량과 동공의 크기와의 관계를 나타내는 그래프이고, 제6도는 수지 충전량과 동공의 크기와의 관계를 나타내는 그래프(액상발포제 일정량 투입시)이다.1 is a perspective view showing an example of an injection molded article according to the present invention, FIG. 2 is a cross-sectional view of a mold and a device used in the method of the present invention, FIG. 3 is a cross-sectional view at the moment of injecting a liquid blowing agent, and FIG. Figure 5 is a cross-sectional view for explaining the foaming of the liquid blowing agent after leaving the device, Figure 5 is a graph showing the relationship between the injection amount of the liquid blowing agent and the size of the pupil, Figure 6 is a relationship between the amount of resin filling and the size of the pupil It is a graph (when a certain amount of liquid foaming agent is added).
Claims (13)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930010803A KR960014538B1 (en) | 1993-06-14 | 1993-06-14 | Injection forming method and apparatus for thermosetting resin articles |
JP12852994A JPH0822558B2 (en) | 1993-06-14 | 1994-06-10 | Injection molding method and injection molding apparatus for thermoplastic resin molded article |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930010803A KR960014538B1 (en) | 1993-06-14 | 1993-06-14 | Injection forming method and apparatus for thermosetting resin articles |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950000359A true KR950000359A (en) | 1995-01-03 |
KR960014538B1 KR960014538B1 (en) | 1996-10-16 |
Family
ID=19357358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930010803A KR960014538B1 (en) | 1993-06-14 | 1993-06-14 | Injection forming method and apparatus for thermosetting resin articles |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH0822558B2 (en) |
KR (1) | KR960014538B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100482427B1 (en) * | 2003-12-19 | 2005-04-14 | 박장원 | Crosslinked foam which has inner-cavity structure, and process of forming thereof |
KR100980836B1 (en) * | 2010-05-11 | 2010-09-10 | 화인케미칼 주식회사 | Method for manufacturing an air-holed foam tire and structure thereof |
-
1993
- 1993-06-14 KR KR1019930010803A patent/KR960014538B1/en not_active IP Right Cessation
-
1994
- 1994-06-10 JP JP12852994A patent/JPH0822558B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07137078A (en) | 1995-05-30 |
KR960014538B1 (en) | 1996-10-16 |
JPH0822558B2 (en) | 1996-03-06 |
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