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Easy peel

Easy peel masterbatch

Easy Peel masterbatches/compounds are used to make the seal of plastic films easy to open. Foods are packed in solid plastic containers and then sealed with films by heating. Easy Peel is to make the sealing films peeled off from solid plastic containers smoothly and uniformly when try to take out the foods/contents from the containers. There are diverse Easy Peel masterbatches/compounds depending on the kinds of resins composing the objects to seal. Typical use is in the skin layer of coextruded structures. The main layer may be polymeric or Aluminium fiol. The peelable effect of a cohesive peel is formed by specific incompatibilities within the plastic material resulting in a predetermined breaking point. 

Polysharif has developed a range of peel masterbatches/compounds suitable for producing polyethylene and polypropylene films for food packaging. 

Specifications

  • give an specific Force for peeling of the foil/polymeric layer

  • ease of processing

  • ability of mutual production via extruder 

Mechanism

Addition of rubbery phases and nano-particles in polymeric matrix in a certain array can cause an easy crack initiation and subsequently cohesive crack propagation induces an easy peel properties. The array of the rubbery phase and nano-particle is a core-shell structure, i.e. a rubbery core and nano-particle shell. 

In fact, the nano-particle play as a stress concentration point for crack initiation for peeling start as well as whole of crack propagation. 

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