Energy savings plus mechanical reinforcement and rheology control

Partial Replacement of Metallocene PE with Polyolefin (A)

Adhesives Formulation

Applicable Type

Hot-melt Adhesives

Applicable Base Polymer

Polyolefins

Applicable Industrial Sectors

Papers & Packagings

Applicable Base Polymer Properties

Meltallocene catalyzed polyethylene such as Affinity GA series of polyolefin elastomers from Dow Chemical has been increasing in use as a base polymer for hot-melt packaging adhesives. Aerafin 180 polymer from Eastman and some grades of Affinity GA elastomer are similar enough in physical properties to allow partial substitution of the m-PE with the Aerafin 180.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Metallocene catalyzed polyethylene (Affinity GA 1950, Dow)

Olefin polymer (Aerafin 180, Eastman)

Tackifier (Eastotac H-130W resin, Eastman)

Wax (H-1, Sasol)

Typical Properties

Properties

Viscosity at 140°C, cps

xxxx

Ring and ball softening point, °C

xxx

PAFT (0.5°C/min ramp rate starting at 30°C), °C

Set time, sec

Open time, sec

Processing

Resulting Properties

The formulation presented here shows properties which make them highly desirable to be used in packaging applications. Unlike typical hot melt adhesives, this composition can withstand peel and shear loads at elevated temperatures for extended periods of time without experiencing catastrophic bond failure. The Aerafin 180 substitution provides an attractive balance of cost versus performance.

Source: Eastman Chemical

Tips and Tricks

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