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ABSTRACT 9

제1장 서론 15

1.1. 연구배경 및 목적 15

1.2. 연구방법 18

제2장 관련이론 19

2.1. 급속 가열 냉각법 19

2.2. 이중사출성형 19

2.3. 사출압축성형 21

2.4. 뮤셀 발포사출 23

제3장 실험 26

3.1. 기계적 성질 26

3.2. 발포 사출금형 설계 29

3.3. 금형 코어의 코어백 구조 검토 31

3.4. 그린 몰드시스템 발포사출 33

제4장 결과 및 고찰 34

4.1. 기계적 성질 34

4.2. 사출금형 유동해석 37

4.3. 그린 몰드시스템 사출금형 유동해석 40

4.4. 시사출 결과 49

제5장 결론 52

참고문헌 54

List of Tables

Table 4.1. Ground plan test results of MuCell 35

Table 4.2. Test results of brilliance test, tensile strength and hardness 36

List of Figures

Fig. 2.1. Mimic mold of RHCM 19

Fig. 2.2. Mimic mold of HIT 19

Fig. 2.3. General injection molding 20

Fig. 2.4. Double injection molding(model halfturn method) 21

Fig. 2.5. Injection press moulding 22

Fig. 2.6. General injection molding process 22

Fig. 2.7. Injection press molding process 23

Fig. 2.8. MuCell jet ejaculation 24

Fig. 2.9. Discharge conception form the MuCell and core back 25

Fig. 3.1. Data of MuCell discharge mold parts and ejaculation gate setting 29

Fig. 3.2. Mold design 30

Fig. 3.3. Core structured review of Core Back and design 31

Fig. 3.4. Eject block design 32

Fig. 3.5. Flow analysis of MuCell injection mold 33

Fig. 4.1. Resins flow analysis of CAE 37

Fig. 4.2. Recognition of problem and change results from the flow analysis 38

Fig. 4.3. CAE analysis results of optimization injection press 39

Fig. 4.4. Injection flow analysis to the cavity temperature 41

Fig. 4.5. Injection flow analysis of cavity temperature 42

Fig. 4.6. Flow analysis results of 1-point gate 43

Fig. 4.7. Injection flow analysis of 3-point Gate 45

Fig. 4.8. Injection flow analysis results of 3-point Gate 46

Fig. 4.9. Injection flow analysis results of 3-point Gate 47

Fig. 4.10. Injection flow analysis results of 3-point Gate 48

Fig. 4.11. Test injection summary and mold 49

Fig. 4.12. Compare existing product with test injection 50

Fig. 4.13. The last MuCell injection development prototype 50

List of Photographs

Photo. 3.1. Discharging uniformity measurement equipment 26

Photo. 3.2. Scratch test equipment 27

Photo. 3.3. Test equipment of HRR hardness and tensile strength 28