Rapidex® NP 2075 is a polyurethane-based reactive hot melt adhesive. It is commonly used for bonding a wide range of materials, including leather, wood, metal, glass, textiles, PUR foams, and various membrane films and plastics such as PVC, ABS, and PC. This adhesive is notable for its high initial strength, excellent thermal stability, and good flexibility after complete curing.

Product Type: Hot Melt Adhesive, Reactive Adhesive

Compatible Substrates & Surfaces: Acrylonitrile Butadiene Styrene (ABS), Film, Glass, Leather, Metal, Plastics, Polycarbonate (PC), Polyurethane (PU) Foam, Polyvinyl Chloride (PVC), Textiles, Wood

Chemical Family: Polyurethanes (PU)

Features: Good Flexibility, Good Thermal Stability, High Initial Strength

Technical Data Sheet

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Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Highlights
  • High initial strength.
  • High thermal stability
  • Good flexibility after complete curing.

Applications & Uses

Markets
Applications
Compatible Substrates & Surfaces
Usage Information
  • Application Procedure and Type of Applicator: Drum, pail and bag unloaders in combination with nozzle-, coating roller- and/or screen printing systems.
  • Coverage: dependent on application, 10-100 g/m2 depending on application system and substrate.
  • Cleaning Agent: IPATHERM®-Reiniger 13 for uncured adhesive. Cured adhesive can only be removed mechanically.
Application Information

Pretreatment of Bonding Surfaces

  • Bonding surfaces have to be clean, dry and free of grease and oil.
  • Polyolefin materials have to be corona-pretreated or flame-treated.

Preparation

  • Drum unloader, heating plate, conveyor pump and applicator gun can, as a rule, be set to different temperatures.
  • Excessive heat may cause decomposition of the adhesive.
  • Depending on the construction of the equipment, a temperature of up to 160°C is sufficient for the heating plate and the conveyor pump.
  • Due to the short operation time, the application equipment may be run at temperatures of up to 160°C.
  • For tank melters only protective gasses with < 5ppm humidity should be used.
  • Positive results have been achieved with nitrogen.
  • Please take care of that packages are used immediately after opening in order to prevent possible reactions with moisture

Adhesive Application 

  • RAPIDEX® NP 2075 LT is either applied in beads or tapes or as a sheet onto one of the bonding surfaces.
  • Bonding is carried out immediately upon application.

Special Attention 

  • Final cure is achieved by reaction with ambient moisture or moisture from the substrate.
  • Curing time depends on the access of humidity to the bonding seam, i.e. the humidity of the substrate, substrate permeability, adhesive film thickness, relative air humidity and ambient temperature.
  • Average curing time for bonding onto wooden materials at a temperature of 20°C and relative humidity of 65% amounts to up to 3-4 days.
  • If large surfaces and/or impermeable materials are bonded under unfavorable climatic conditions, the curing time may be considerably longer.

Properties

Specifications
ValueUnitsTest Method / Conditions
Density (at 20°C)approx. 1.02g/cm³-
Viscosity (at 120°C)approx. 45000mPa.s-
Viscosity (at 150°C)approx. 16000mPa.s-
Open Time180.0Seconds-
Premelting Temperatureapprox. 160°C-
Application Temperatureapprox. 120 - 140°C-
Coverage Range10 - 100g/m²-

Packaging & Availability

Storage & Handling

Shelf Life
6 months (in unopened pails and drums), 12 (months in cartridges)