IsoMelt HMPUR 5

IsoMelt™ HMPUR 5 is a long assembly time; moisture-curing; hot-melt polyurethane adhesive. The adhesive is solid at ambient temperatures. The adhesive is applied in the molten form and cures in the presence of moisture to form a tough; durable bond. The IsoMelt™ HMPUR 5 bonds to a wide variety of substrates; but at least one substrate must be gas permeable. Typical substrates include wood and wood products; most foams; primed metals; FRP; and other plastics with Dyne levels greater than 38 dynes. At 3-mil thickness; the adhesive transfers to the opposing substrate at least through five minutes of assembly time; prior to nipping.


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Technical Data Sheet


  • Fabric
  • Foam
  • Glass
  • Laminating
  • Metal
  • Panel Assembly Adhesive
  • Plastic and Metal Fabrication
  • Plywood
  • RV & Trailer Manufacturing
  • Wood


  • 100% Solids
  • Adhesion to various substrates
  • Excellent green strength
  • Five-minute assembly time
  • Roll coater stable
Product Types

Adhesive & Reactive Hot Melt


Product Testing

Test PerformedTest Results
% Solids100 % 
10 minute Green Strength23 psi 
15 minute Green Strength56 psi 
3 mil open time - Internal method - wood to wood5 Minutes 
5 minute Green Strength8 psi 
Color - ISOblue, pale yellow  
Elongation - ASTM D412360 % 
Hardness - ASTM D2240 - Shore D42 Shore D 
Lap Shear ABS - ASTM D1002450 psi 
Lap Shear Acrylic - ASTM D1002900 psi 
Lap Shear Aluminum - ASTM D1002300 psi 
Lap Shear Maple - ASTM D1002300 psi 
Lap Shear PVC - ASTM D10021000 psi 
Lap Shear SMC - ASTM D1002400 psi 
Open Time - 1/8 inch Normal9 Minutes 
Open Time - ASTM D4497 - 4 Mil7 Minutes 
Set Time - Wooden Block - Normal22 Minutes 
Specific Gravity - ISO1.1  
Tear Strength - ASTM D624, Die C300 pli 
Tensile Modulus - ASTM D41220 ksi 
Tensile Strength - ASTM D412900 psi