The automotive damping pad roller coating machine is a roll‑to‑roll continuous coating equipment specifically used in production lines for butyl rubber damping pads and asphalt‑based automotive sound‑deadening pads. It uniformly applies damping compound or pressure‑sensitive adhesive onto substrate materials such as aluminum foil, PET film, and non‑woven fabric. After coating, the material goes through drying, lamination, and winding to produce NVH (Noise, Vibration, Harshness) damping pads for vehicle chassis and doors.

Typical process flow:

Unwinding → Web guiding system → Pre‑heating zone → Coating mainframe (metering roll + applicator roll) → Hot‑air drying tunnel → Cooling and setting → Protective film lamination → Tension control with pull‑roll → Finished product winding. Optional online thickness measurement and automatic cutting can be integrated.

Core mainframe structure:

• Applicator roll + metering roll (steel roll / silicone rubber roll):

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  Coating thickness is precisely controlled by adjusting the gap between the rolls. The reverse‑coating structure ensures uniform application, making it especially suitable for high‑viscosity butyl damping compounds and hot‑melt damping materials.

• Glue supply system:

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  Includes a heated glue tank, a screw metering pump, and circulation piping. Since damping compound tends to solidify at room temperature, constant temperature maintenance is essential.

• Servo drive and closed‑loop tension control system:

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  Prevents stretching, wrinkling, and lateral wandering of the aluminum foil substrate during processing.

• Hot‑air drying oven:

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  Features zone‑by‑zone temperature control to allow gradual solvent evaporation, thus avoiding surface bubbles and pinholes on the damping pad.

• Web guiding system (EPC/LPC):

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  Ensures neat edges and straight winding of the finished roll.

• Exhaust gas collection system:

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  For solvent‑based damping compounds, an integrated fume extraction unit is provided to meet safety and environmental protection requirements.