Apply HumiSeal conformal coating

Applying HumiSeal conformal coating, produced by Chase Corporation, requires controlled processes to ensure proper protection, adhesion, and reliability. In PCB 組裝, SMT 組裝, 以及 交鑰匙 PCB 組裝, correct application is critical to achieve consistent coating performance.

Surface preparation (most important step)
申請前 保形塗層, the PCB must be thoroughly prepared:

• Remove flux residues, oils, dust, and contaminants
• Use approved cleaning methods (solvent cleaning, ultrasonic, or deionized water)
• Ensure the board is completely dry

Poor cleaning is one of the main causes of coating defects in PCB 組裝.

Masking (protect no-coat areas)
Certain areas must not be coated:

• 連接器和插座
• Test points
• Switches and contact surfaces

Use tapes, boots, or masking materials to protect these areas during SMT 組裝.

Choose the application method

HumiSeal coatings can be applied using several methods depending on production volume:

Spray coating (manual or automated)

• Most common method in PCB 組裝
• Provides uniform coverage
• Suitable for both low and high volumes

選擇性塗層（自動化）

• High precision using programmable machines
• Ideal for 交鑰匙 PCB 組裝 生產線
• 降低遮蔽需求

浸塗

• PCB is immersed in coating liquid
• Ensures full coverage
• May result in thicker coating

刷塗

• Used for small batches or rework
• Less consistent than automated methods

控制塗層厚度

Maintain proper thickness (typically 25–75 µm):

• Avoid too thin (insufficient protection)
• Avoid too thick (risk of cracking or heat issues)

Thickness control is essential for consistent quality in SMT 組裝.

固化過程

After application, the coating must be cured:

• 空氣乾燥 (common for acrylic coatings)
• 熱固化 (for urethane or epoxy)
• UV 固化 (for UV-curable HumiSeal coatings)

Follow manufacturer specifications for time and temperature to ensure full curing.

檢驗與品質控制

After curing, inspect the coating:

• Use UV light to verify coverage (if UV tracer is present)
• Check for bubbles, voids, or missed areas
• Ensure no overcoating on masked areas

Inspection ensures coating quality in 交鑰匙 PCB 組裝.

最佳實踐

• Maintain clean working environment
• Control humidity and temperature during application
• Use proper equipment calibration
• Train operators on coating techniques

總結

Applying HumiSeal conformal coating involves careful surface preparation, proper masking, controlled application, and thorough curing. In PCB 組裝, SMT 組裝, 以及 交鑰匙 PCB 組裝, following these steps ensures optimal protection, improved reliability, and long-term performance of electronic products.

We support HumiSeal and equivalent conformal coating solutions for your PCBA projects.

取得保形塗層報價

使用我們的塗層解決方案，確保您的 PCB 長期可靠。從這裡開始.
將您的需求傳送給我們，並獲得我們工程團隊的快速回應。.

24 小時回應 ✔ 工程支援 ✔ 小型與大量生產

請啟用瀏覽器的 JavaScript，以完成此表格。.

名稱 *

電子郵件 *

WhatsAPP

首選材料

• 壓克力 (AR)
• 矽膠 (SR)
• 聚氨酯 (UR)
• 紫外線可固化 - UV
• 我不確定 / 需要建議

Email Preferred Name

檔案上傳

拖放檔案、, 選擇要上傳的檔案 您最多可以上傳 8 檔案。.

請將所有 Gerber 檔案、Drill 檔案和 BOM 壓縮為單一的 .ZIP 或 .RAR 檔案，以加快處理速度。.

訊息

"「請列出不得塗層的元件或區域（如連接器、測試點）」。如果您有特定的塗層材料要求（例如 HumiSeal），請在注釋框中說明。.

提交

深圳市騰欣杰電子有限公司