Product Introduction
The Dip Coating Machine is a laboratory-scale device used for impregnation and double-sided coating of flat substrates such as paper, carbon paper, and textile nonwovens. It utilizes a slot-type coating method, enabling either metered or continuous recirculation coating. The machine is compact, provides precise glue control, and is easy to operate. With both automatic and manual coating modes, a coating width of 300 mm, and an adjustable speed range of 0.1-10 m/min, it delivers double-sided coating in a single pass. Pneumatic roller pressure is digitally adjustable, making it an ideal coating tool for process parameter research and trial production in enterprises, research institutions, and universities.

Key Features
Double-Sided Coating in One Pass: The unique slot-type dip structure allows both sides of the substrate to contact the coating liquid simultaneously as it passes through the bath, achieving double-sided application in a single operation with high efficiency and uniformity.
Digital Pneumatic Pressure Adjustment: The pressure rollers are pneumatically actuated, with pressure set and adjusted digitally via the touchscreen, providing excellent repeatability when experimenting with different pressure conditions.
Auto/Manual Dual Mode: The coating mode can be switched between automatic and manual, accommodating both metered coating and continuous recirculation coating to meet different experimental needs.
Precisely Adjustable Speed: The coating speed is adjustable from 0.1 to 10 m/min, allowing users to explore the influence of speed on coating quality and optimize process parameters.
Compact Yet Feature-Rich: With overall dimensions of 500×400×1400 mm, the compact design saves space while integrating double-sided coating, pressure regulation, and speed control functions.

Anti-Stick Options: Standard polyurethane rollers; optional PTFE non-stick rollers and PTFE doctor blades are available to prevent coating buildup and facilitate cleaning.

Technical Specifications

FAQ
1. Uneven coating thickness
Uneven coating liquid concentration, substrate misalignment, or doctor blade gap deviation. Stir coating liquid evenly, adjust guide rollers, and calibrate blade gap.
2. Coating amount too high or too low
Doctor blade height not properly set or coating liquid level inappropriate. Fine-tune blade height and control the liquid level in the reservoir.
3. Substrate wrinkling, unstable transport
Inconsistent upper/lower roller pressure or unstable tension. Adjust roller pressure and stabilize transport tension.
4. Liquid dripping, edge overflow
Coating speed too slow or coating liquid viscosity too low. Appropriately increase speed or adjust liquid viscosity.
5. Abnormal noise during operation
Bearing lack of lubrication, loose drive chain, or debris on rollers. Apply lubricant, tighten chain, and clean roller surfaces.
6. Temperature control failure, abnormal liquid temperature
Heating element fault or temperature probe misalignment. Service the heating assembly; re-fix and calibrate the probe.
7. Severe roller sticking
Infrequent cleaning, solidified coating residue. Stop machine, clean roller surfaces, and perform routine maintenance.
8. Speed control malfunction, unstable speed
Frequency inverter fault or loose motor wiring. Check circuit; reset speed parameters.
9. Poor impregnation penetration
Insufficient dipping depth or too short immersion time. Adjust dipping position and slow down substrate travel speed.

After-Sales Service
Thank you for your inquiry. Shandong Annimet Instrument Co., Ltd., established in 2007, has dedicated nearly two decades to the R&D, production, and sales of quality testing instruments. We regard product quality as the lifeblood of our enterprise and pursue excellence in every product developed. Looking back at the history of scientific and technological development, we firmly believe that every product is born from technological advancement, every technology derives from material exploration, every material discovery depends on process improvement, and every process improvement relies on experimental support. Humanity never lacks ideas; we need the means to realize them. Annimet Instrument will consistently provide the tools for your ideas and creativity. Should you have any questions, please feel free to contact our customer service team—we are fully committed to providing excellent pre-sales, in-sales, and after-sales service.