Selective coating with HumiSeal
Selective coating with HumiSeal conformal coating, developed by Chase Corporation, is an automated process that applies coating only to specific areas of a PCB, rather than covering the entire board. It is widely used in modern PCBアセンブリ, SMTアセンブリ, そして ターンキーPCBアセンブリ for precision and efficiency.

How selective coating works
Selective coating systems use programmable equipment to control exactly where the coating is applied:
- CAD data or teaching programs define coating paths
- Robotic valves or spray heads dispense HumiSeal precisely
- The machine avoids connectors, test points, and sensitive areas
- Coating is applied in controlled patterns and thickness
This eliminates the need for extensive manual masking.
主な利点
高精度
- Coating is applied only where needed
- Protects critical components without affecting connectors
マスキングの低減
- Minimal use of tapes or boots
- Saves time and labor in PCBアセンブリ
一貫した品質
- Uniform coating thickness (typically 25–75 µm)
- High repeatability in SMTアセンブリ
材料の節約
- Less coating waste compared to dip or full spray methods
Faster production
- Ideal for high-volume ターンキーPCBアセンブリ 行
代表的なアプリケーション
Selective coating with HumiSeal is used in:
- カーエレクトロニクス
- 産業用制御システム
- LED lighting PCBs
- 家電製品
- Aerospace and medical devices
These applications require both protection and precision.
Selective coating vs traditional methods
- 選択的コーティング → precise, automated, minimal masking
- スプレーコーティング → broader coverage, requires masking
- ディップコーティング → full coverage, less control
- ブラシコーティング → manual, used for rework
Selective coating is considered the most advanced method in SMTアセンブリ.
Important process considerations
- Proper PCB cleaning before coating
- Correct viscosity settings for the machine
- Accurate programming of coating paths
- Post-coating curing (UV, thermal, or moisture)
- Inspection for coverage and defects
結論
Selective coating with HumiSeal is a high-precision, automated method that applies conformal coating only where needed. In PCBアセンブリ, SMTアセンブリ, そして ターンキーPCBアセンブリ, it offers superior efficiency, consistency, and cost control compared to traditional coating methods.
We support HumiSeal and equivalent コンフォーマルコーティング solutions for your PCBA projects.
コンフォーマルコーティングのお見積もり
PCBAプロジェクトのための信頼性の高いコンフォーマルコーティングソリューションをお探しですか?下記をクリックして迅速な見積もりを入手してください。.
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