Hot Melt Adhesives (HMA)

Hot Melt Adhesives is a name given to a thermoplastic material, solid at room temperature, and which can be applied liquid by means of heat. These materials stick strongly on the work surface once they cool down under their melting point. Unlike liquid adhesives, hot melts are applied without using chemical reactions or solvent evaporation which leads to important environmental benefits.

Waxes play an outstanding role in the production, processing and performance of hot melts and constitute up to 70 % of the total hot melt formulation. The key role of waxes in hot melts is:

Modifying the viscosity
Controlling the open and set times of the HMA
Increase the blocking point of the final adhesives
The melt range of waxes controls the temperature properties of a HMA

AST PetroChemie offers synthetic waxes which make them ideally suited to the requirements of modern packaging adhesives thanks to their high crystallinity and low melt viscosity.

Product	Melting Point	Penetration	Color
AST 8100	96 – 101	2 max	White
AST 8105	101 – 108	2 max	White
AST 8200	105 – 115	3 max	White
AST 8220	105 – 115	5 max	White
AST 8240	105 – 115	7 max	White

In addition, our selective range of petroleum waxes, like our highly branched structure of micro crystalline grades, are widely used in flexible packaging, book-binding and low temperature HMA applications, whilst our high melting point paraffin waxes can be considered as cost competitive blending components in various HMA systems.

Product	Melting Point	Penetration	Viscosity	Color
AST 4020	72 – 80	20 – 28	12 – 18	Yellow, light
AST 4080	72 – 78	15 – 20	12 – 17	White
AST 4120	78 – 88	10 – 15	12 – 16	Off-White
AST 1430	62 – 64	12 – 18	4.5 – 6.5	White
AST 1470	64 – 66	12 – 18	5.0 – 7.0	White
AST 1500	67 – 69	14 – 18	6.0 – 8.0	White

Please contact us for further details. It will be our pleasure to assist you.