Polysiobutylene

CLING AGENT

PIB is the acronym of Polyisobutylene, an organic polymer prepared by the polymerization of isobutene. Polyisobutylene (or PIB) is a viscous polymer and is incompatible with PE. Polyisobutylen (or PIB) will therefore migrate to the surface of the film over time and thus will give a cling effect.

T0

LLDPE RESIN

T+3 days

LLDPE RESIN

T+28 days

LLDPE RESIN

Cling development is impacted

Density of the resin (d<0.923 is recommended)

Crystallization ratio

Presence of additives (antiblock fillers or slip agents)

Storage temperature of the film rolls

Properties

PW delivers different properties that come to be adapted according to your processing batch production methods and final application. All grades present balance properties in different strengths of peel strength, lap strength, noise and retack.

Two main cling effects

PEEL

High peel cling will prevent the unwrapping of the film
by friction.

LAP

High lap cling will ensure a good interlayer cohesion to the benefit of holding force and airtightness.

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Two secondary cling effects

RETACK

High retack will allow wrapping, unwrap and wrap again with good cling effect.

NOISE

Related to cling.

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Mechanism
Poperties
Cling agent
Cling development
Effects
Side benefits
…