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Precision Gap-Adjustable Scraper Coater for XPS | Anti-Skid & Stucco-Ready Coating with Low Waste
This material-saving XPS board knife coater applies a precisely controlled wet coating layer onto extruded polystyrene (XPS) rigid foam boards. Unlike spray or roller coating, the knife-over-roll method achieves >95% transfer efficiency and eliminates overspray, which is especially critical for XPS (solvent-sensitive substrate). Excess high-viscosity coating (plaster, polymer mortar, latex, acrylic, or cementitious base) is recirculated back to the supply tank. Customizable blade gap, coating width, material viscosity, and surface adhesion promotion available for different XPS densities (25-50 kg/m³) and final applications (stucco-render ready, anti-skid walkable surface, fire-retardant layer).
Technical Parameters
Parameter
Value / Range
XPS board width range
600 mm - 1250 mm (customizable up to 2400 mm)
XPS board length range
800 mm - 3000 mm (customizable)
XPS board thickness range
10 mm - 120 mm
XPS density range
25 - 50 kg/m³ (customizable nip pressure for soft boards)
Coating speed
2 - 30 m/min (adjustable)
Wet film thickness
0.3 mm - 5.0 mm (accuracy ±0.05 mm)
Coating uniformity
±3% across full width
Material transfer efficiency
95% - 98%
Material saving vs. spray/roller
35% - 45% (typical)
Blade type
Round-edge or straight bevel (customizable hardness)
✅ Compatible with water-based, cement-based, and 100% solids coatings
Support and Services
Free material saving & adhesion test - send XPS samples + your coating; we measure transfer efficiency and pull-off adhesion
Surface pre-treatment recommendation - flame/corona parameters for your XPS density
On-site installation & commissioning by foam-line specialists
Operator training (gap setting, blade selection, cleaning thick coatings)
Process optimization - recipe for your specific plaster/polymer viscosity
24/7 remote support (video call + PLC access)
Spare parts kit (blades, seals, pump liners) included
Annual maintenance & blade sharpening service available
Packing and Shipping
Standard packing: Stretch-wrapped with anti-rust, wooden crates for control cabinet and drying tunnel
Shipping: FOB or CIF (40HQ container for standard line; longer tunnel requires split shipment)
Lead time: 40-55 days for standard models, 65-85 days for fully customized systems
Documents included: Operation manual, electrical diagram, CE declaration, spare parts list, XPS coating guide
Port of shipment: Shanghai / Ningbo / Qingdao (customizable)
Frequently Asked Questions
Q1: How much material can I save compared to spraying plaster onto XPS?
A: Typically 35-45% for medium-viscosity plasters. Spraying wastes 30-50% as overspray + bounce-back from rigid foam. Knife coating recirculates >95% of excess. We provide a customizable free test with your XPS and coating before order.
Q2: Will the knife coater crush or deform soft XPS boards (e.g., 25 kg/m³)?
A: No. The backing roller is customizable (soft silicone) and the blade gap can be set to a floating mode. Nip pressure is adjustable. For very soft boards, we add a rigid backplate support.
Q3: My coating contains sand or short fibers. Can the machine handle that?
A: Yes. We use a customizable carbide blade (wear-resistant) and an open-gear or screw pump (not a close-tolerance gear pump). Filters are coarser or removable. Recovery trough has a screen to separate large particles before recirculation.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
2000000-3000000
Employee Number:
150~200
Ecer Certification：
Verified Supplier
Company Profile
Dongguan Osmanuv Mechanical Equipment Co., Ltd. is a design, research, development, manufacturing as one of the UV equipment, UV equipment and coating, infrared IR equipment, professional production enterprises, automation equipment, environmental equipmen...
Company Profile
Dongguan Osmanuv Mechanical Equipment Co., Ltd. is a design, research, development, manufacturing as one of the UV equipment, UV equipment and coating, infrared IR equipment, professional production enterprises, automation equipment, environmental equipmen...
