Intercol is HB Fuller distributor for hotmelts and waterbased adhesives in the Benelux, Netherlands, Belgium and Luxembourgh.

Snapshot of H.B. Fuller’s PUR (polyurethane reactive) hot melt adhesives — the go‑to choice when you need speed, strength, and staying power in demanding bonding jobs

What They Are

• Reactive hot melt technology — applies like a standard hot melt, then chemically crosslinks with moisture for a durable, heat‑ and moisture‑resistant bond.
• Fast initial strength — ideal for high‑speed production lines.
• Versatile bonding — works on wood, composites, foils, decorative papers, veneers, PVC, metals, and more.

Key Advantages

• Varighet: Excellent resistance to heat, moisture, and many chemicals.
• Efficiency: Short open times and quick set for faster throughput.
• Sustainability: Many grades are low‑VOC and some have <0.1% monomer isocyanate, avoiding hazardous labeling.
• Workplace safety: Safer formulations available without compromising performance.

Typical Applications

Sector / Use Case	Examples
Wood & Furniture	Profile wrapping, veneering, engineered flooring, decorative surface lamination
Doors & Panels	Assembly of door frames, flat panels, engineered composites
Specialty	Marine decking, transportation interiors, hybrid material bonding

Example Products

• Rakoll® 4654 – High initial strength, ~4 min open time, high moisture resistance.
• Rakoll® 5010 – Safe‑label, ~2 min open time, medium moisture resistance.
• Körapur® 940 Marine – Elastic, weather‑resistant, ~10 min open time, very high moisture resistance.

Side‑by‑side comparison of H.B. Fuller’s PUR hot melts against other common adhesive types, so you can see where each option has its sweet spot.

Feature / Property	PUR Hot Melt (e.g., H.B. Fuller Rakoll®)	EVA Hot Melt	Water‑Based PVA	Solvent‑Based Contact Cement
Initial Strength	⚡ Very high – sets in seconds to minutes; ideal for high‑speed lines	⚡ High – quick handling strength	⏳ Low – needs hours to develop	⚡ High – bonds immediately on contact
Full Cure Mechanism	Moisture‑reactive crosslinking (chemical bond forms over hours/days)	Physical cooling	Water evaporation	Solvent evaporation
Final Bond Strength	💪 Excellent – structural‑grade on many substrates	Moderate	High on porous surfaces	Very high on compatible surfaces
Heat Resistance	🔥 Very high (often >120 °C)	Low–moderate (~60–80 °C)	Low	Moderate–high depending on formulation
Moisture Resistance	💧 Excellent – suitable for kitchens, baths, exterior panels	Poor–moderate	Poor–moderate	Good
Substrate Versatility	Wood, plastics, metals, laminates, composites	Mostly porous materials & some plastics	Porous materials (wood, paper)	Smooth surfaces, laminates, metals
Open Time	Short (30 sec–10 min, depending on grade)	Short	Long	Short–medium
Application Temp.	100–140 °C	160–190 °C	Room temp	Room temp
Safety / Emissions	Low‑VOC & safe‑label options available	Low VOC	Low VOC	Higher VOC; needs ventilation
Best‑Fit Applications	Profile wrapping, flooring, outdoor panels, marine, transport interiors	Carton sealing, packaging, simple woodworking	Furniture assembly, paper lamination	Decorative laminates, countertop fabrication

Key takeaway: PUR hot melts excel when you need fast handling plus extreme durability—especially in environments where heat, moisture, or diverse substrates are in play. They’re often the “bridge” between simple thermoplastic hot melts and more complex structural adhesives.

Quick‑reference sheet pairing some of H.B. Fuller’s standout PUR hot melt grades with the jobs they’re engineered to excel at.

Produkt	Open Time	Moisture Resistance	Key Traits	Typical Uses
Rakoll® 4654	~4 min	💧 High	High initial tack, strong heat resistance	Profile wrapping, engineered wood flooring, furniture panels
Rakoll® 5010	~2 min	💧 Medium	Safe‑label (<0.1 % monomer isocyanate), quick handling	Flat lamination of decorative foils, doors, interior panels
Rakoll® HM 6086	~6 min	💧💧 Very High	Extended working time, excellent adhesion to plastics & metals	Transportation interiors, composite bonding, marine
Körapur® 940 Marine	~10 min	🌊 Extreme	Elastic bond, weather‑ and saltwater‑resistant	Marine decking, outdoor structures, RV panels
Rakoll® PUR 6100	~3 min	💧 High	Balanced open time & versatility, low VOC	General furniture assembly, profile wrapping, veneering

💡 How to use this table:

• Match open time to your line speed and complexity of assembly.
• Factor in environment — kitchens, baths, or exterior projects benefit from very high to extreme moisture resistance.
• Check substrate compatibility — PURs shine on mixed materials, especially when you need long‑term durability.

Here’s a “choose‑your‑own‑adhesive‑adventure” map you can follow to quickly narrow down the best H.B. Fuller PUR hot melt for a given job.

🪵 Step 1: Identify Your Main Substrate

• Wood / Veneer / Laminates → Go to Step 2
• Plastic / Composite / Metal mix → Go to Step 3
• Marine / Outdoor exposure → Go to Step 4

⚙️ Step 2: Wood‑Based Projects

• Simple profiles or flat lamination, fast line speed → Rakoll® 5010 (safe‑label, ~2 min open time)
• More complex profiles / engineered flooring → Rakoll® 4654 (~4 min open time, high moisture resistance)
• Need extra working time for tricky assemblies → Rakoll® HM 6086 (~6 min, very high moisture resistance)

Step 3: Plastics / Composites / Metals

• Short open time OK (fast assembly) → Rakoll® PUR 6100 (~3 min, versatile)
• Need extended open time for precise positioning → Rakoll® HM 6086 (~6 min, bonds diverse substrates well)

Step 4: Marine or Harsh Outdoor

• High flexibility + extreme moisture/salt resistance → Körapur® 940 Marine (~10 min open time, elastic & weatherproof)

💡 How to read this: Start at Step 1, follow the arrow based on your material and production needs, and the path leads to the most likely fit. If you’d like, I can turn this into a visual flowchart you can pin on a workshop wall or add to a process manual for quick reference.