Typical Formulation Ingredients
Ingredient
Parts by weight
Polyol (TONE, Dow Chemical)
Typical Properties
Peel Strength (open time – 10 mins)
Resulting Properties
Heat seal adhesives are widely used because of their easy application, fast setting properties, and excellent adhesion to many different substrates. The adhesive is coated on both surfaces to be joined. After the carrier evaporates, the two surfaces are brought together under slight pressure and heat, and the adhesive bonds to itself. A typical formulation for a solvent borne, hot melt polyurethane contact adhesive is provided in the above table.
Properties of B.F. Goodrich Estane Thermoplastic Polyurethanes
Melt temperature, °C |
Time, hrs, for recrystallization to amorphous form |
Tensile strength, MPa |
Ultimate elongation, % |
50 |
0.25 |
24 |
790 |
60 |
2 |
40 |
790 |
70 |
24 |
80 |
730 |