Rakoll® 4654 is a polyurethane-based reactive hot melt adhesive specifically designed for profile wrapping of wood and wood-based substrates. This adhesive fulfills the application requirements for easy processability and high-quality finished products. It exhibits high initial strength and a fast setting, making it ideal for bonding difficult substrates.

RTU Product Type: Hot Melt Adhesive, Reactive Adhesive

Application Area: Doors, Flat Lamination, Floor, Furniture, Household, Industrial Composites, Lamination, Nonwoven, Profile Wrapping, Rigid Foam, Veneering, Wood Profile Wrapping, Woodwork

Compatible Substrates & Surfaces: Acrylonitrile Butadiene Styrene (ABS), Composites, Cotton, Foils, Leather, Metal, Paper, Plastics, Polyvinyl Chloride (PVC), Wood

Application Method: Nozzle, Roller

Chemical Family: Polyurethanes (PU)

Features: Clean Running, Fast Setting, Good Adhesion, Good Bonding Strength, Good Cold Resistance, Good Processability, Good Solvent Resistance, Good Thermal Stability, High Initial Strength, Low Temperature Performance, Short Open Time, Temperature Resistance

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Ready-to-Use Product Features
Product Benefits

Versatile application conditions:

  • Shows high initial strength and fast setting which makes the product ideal for difficult to bond substrates.
  • Low application temperatures from +120°C allow bonding of more heat sensitive materials. It also potentially provides energy cost savings.
  • Suitable for profiles with tight curvatures.

Temperature resistance:

  • High heat resistance after complete curing up to 150°C depending on the surface materials
  • Good cold resistance

Applications & Uses

Markets
Applications
Application Area
Application Method
Compatible Substrates & Surfaces
Cure Method
Product Applications
  • Lower temperatures than recommended can cause higher viscosity which result in reduced bond strength and reduced wetting.
  • Refer to the technical data table regarding processing parameters.
  • 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 pro- cessing temperature can cause decomposition of the adhesive.
  • Tank melters should use protective gases with < 5 ppm humidity, only. Rakoll" 4654 is moisture sensitive, therefore container must be kept closed.
  • Clean tools immediately after use.
  • Once cured, the material can only be removed mechanically.
Profile Wrapping
  • Open time: Medium
  • Materials: Wooden materials, plastics
  • Green strength: High
  • Application: Slot nozzle
  • Pre heating: Yes
  • Application temp: 120 - 140ºC
  • Additional information: Specially recommended for low ambient temperatures

Properties

Physical Form
Appearance
Whitish Solid
Typical Properties
ValueUnitsTest Method / Conditions
Application Temperature120 - 130°C-
Technical Data
ValueUnitsTest Method / Conditions
Density1.1g/cm³-
Storage Temperature- 25 to 35°C-
Processing Temperature120 - 150°C-
Viscosity (140°C, Sp. 29, 10 rpm)25000mPa·sBrookfield
Softening Point67°CRing+Ball
Typical Curing Time (23°C, 50 % RH, depending on ambient temperature and relative air humidity, considerably longer at lower temperatures and low humidity)3 - 4d-
Ambient Temperature18 - 25°C-
Substrate Temperature18 - 25°C-
Relative Humidity40 - 60%-
Product Properties

Surface Requirements

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

Packaging & Availability

Regional Availability
  • Europe
  • India/MiddleEast/Africa (IMEA)

Storage & Handling

Shelf Life
9 months
Storage Condition

Rakoll 4654 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).