Rakoll® 2021 is a one-component water-based adhesive designed for membrane press spray application in the woodworking industry. It provides excellent versatility, high heat resistance, and easy reactivation properties, making it ideal for demanding customers and difficult circumstances. This adhesive ensures reliable results for your cabinet door production needs, especially for 3D lamination.

Chemical Family: Polyurethanes (PU)

Application Method: Spray

Compatible Substrates & Surfaces: Acrylonitrile Butadiene Styrene (ABS), Composites, Medium-Density Fibreboard (MDF), Polyvinyl Chloride (PVC), Thermoplastics, Wood

Features: Excellent Spray Performance, Good Bonding Strength, Good Peeling Strength, Heat Resistance, High Spreading, Very Good Heat Resistance

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Application Area
Application Method
Compatible Substrates & Surfaces
Product Applications
  • Lower temperatures than recommended can cause higher viscosity which result in reduced bond strength and reduced wetting.
  • Depending on the construction of the equipment, a continuous heating above processing temperature can cause decomposition of the adhesive.
  • Tank melters should use protective gases with < 5 ppm humidity, only. Rakoll® 2021 is moisture sensitive, therefore container must be kept closed.
  • After drying the bond is effected by activation in the 3D process. Bonding time depends on thermal conductivity of the substrates.
  • Pressing time depends on temperature, pressure and substrates. Bonding and pressing times must be determined by preliminary tests.
  • Water for fresh adhesive, when film is dried use Korasolv® PU or Isa™Verdünner 220.

Properties

Technical Data
ValueUnitsTest Method / Conditions
Density (wet)1.06g/cm³Internal HBF Standard PAN 162
Storage Timemax. 6months-
Storage Temperature15 - 25°C-
Processing Temperature18 - 20°C-
Relative air humidity40 - 60%-
Moisture Content of Wood8 - 10%-
Viscosity2600mPa·sInternal HBF Standard PAN 100
Flash-off Time / Waiting Time (25°C)min. 60min-
Reactivation (storage at room temperature 20°C, application weight 40 g/m2 dry)max. 3d-
Activation Temperature (depending on substrates)55 - 65°C-
Application Weight (dry)40g/m²-
Product Properties

Surface Requirements 

  • Dry
  • Clean
  • Free of grease
  • Free of dust

Packaging & Availability

Packaging Type
Regional Availability
  • Europe
  • India/MiddleEast/Africa (IMEA)
Packaging Information
  • 25 and 30 kg pails
  • IBC

Storage & Handling

Storage Condition

Rakoll® 2021 should be used within the shelf life specified on the packaging. The storage stability ap- plies to material stored under appropriate conditions only (original unopened containers, recommended storage temperature).