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유변학 과&
SLOT DIE 코팅 기술
SLOT DIE 코팅 기술
• 배경
• 시스템
• 기술
• 공정
• 요약
배경
• Slot Die 기초
• 폐쇄계(Close System)
• 균일한 액 분포
• 정확한 코팅폭
• 온도 유지
배경
• Slot Die 적용
• 점도 VS 전단율
• 고형분 비율
• 코팅두께
• 입자 크기
• 코팅 폭
• 라인 스피드
• 작업 온도
배경
• Slot Die 설계
• 유변학
• 매니폴더
• 본체
• 유동(流動)
제어
배경
유변학
• 점도
• 전단율(응력)
배경
RHEOLOGY
• 뉴턴유체
• 중합체
o Shear thinning
유속에 따른 점도 감소
o Shear thickening
유속에 따른 점도 증가
η
γ
.
η
γ
.
η
γ
.
η
γ
.
η
γ
.
배경
유변학
• 공정 지식
o G’ (저장 탄성계수)
o G” (손실 탄성계수)
o tan d
시스템
• Slot Die
• 포지셔너
• 백 롤
• 액공급장치
• 원단
시스템
• Slot Die
o 매니폴더 디자인
o 제조 공차
o 립 옵셋
o 립 형태
시스템
• Slot Die
o 고정형 립
o 가변형 립
o 로타리 로드
시스템
• 포지셔너
o 코팅 각도
o 롤 위치
o 재현성
시스템
• 백 롤
o 직경
o 흔들림공차
o 동심도
o 원통도
시스템
• 액공급 장치
o 용적식 이송
o 유변 특성
o 밀도
o 입자 크기
o 전단 민감도
시스템
• 원단
o 편차 (수율)
o 표면 에너지
o 표면 처리
o 진공 박스
o 장력 조절
기술
기술
• Direct 코팅
기술
• Tensioned web 코팅
기술
• Curtain 코팅
공정
• 전폭 코팅
• lane 코팅
• 단속 코팅
• 다층 코팅
• 양면 코팅
요약
• 시스템
• 기술
• 공정
유변학 과& Slot die 코팅 기술

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유변학 과& Slot die 코팅 기술