Energy savings plus mechanical reinforcement and rheology control

Multipurpose Polyalphaolefin HMA with Medium Open Time

Adhesives Formulation

Applicable Type

Hot-melt Adhesives

Applicable Base Polymer

Polyolefins

Applicable Industrial Sectors

Laminates , Industrial Assembly , Papers & Packagings

Applicable Base Polymer Properties

The amorphous polyolefin based hot melts are widely used in such areas as packaging, non-wovens, and product assembly. They are suitable for adhering paper or foil to a variety of substrates. The products are tailored copolymers of ethylene, propylene or 1-butene and exhibit a range of melt viscosities, needle penetrations and softening points, surface tackiness, and open times. Incorporation of 1-butene gives copolymer products long open times and low softening points of around 107°C.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Polyalphaolefin, low ethylene copolymer (RT 2280, Rexene Products)

Tackifier, aliphatic hydrocarbon resin (Escorez™ 1102, ExxonMobil)

Typical Properties

Properties

Melt viscosity, mPa-s

xxxx

Needle penetration (clmm)

Softening point, °C

xxx

SAFT, °C

Open time, sec

Processing

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Resulting Properties

The formulation presented here shows properties which make them highly desirable to be used in packaging applications. The SAFT is somewhat dependent on the molecular weight as well as on the softening points of the copolymers. The tensile strength varies proportionally with the softness of the polymers. The compatibility of blends with tackifiers and waxes is directly related to the chemical nature of the copolymer and its molecular weight.

Tips and Tricks

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