Stretch Film

Blown Stretch Film

Cast Stretch Film

Differences between Blown and Cast film

  • Holding Strength

    The higher mechanical properties of the blown film will provide greater holding strength. More force is required to stretch the blown film, and the enhanced properties make re-stretching the film extremely difficult providing a greater holding strength. Cast films will break and stretch easily. This is fine when applying the film by hand. This will allow your product to shift easily when shipping, and could result in costly damages.

  • Yield

    Tests have shown that blown film stretches further than cast film, although blown film requires more force to achieve the higher yield. Any additional yield provided by the cast film is able to be counteracted by utilizing a lower micron blownThe properties of the blown film make it possible to down-gauge to a thinner film while still maintaining load stability on pallets. Thinner film means reduction in cost and less plastic waste.

  • Tear Resistance

    Blown films have a greater tear resistance greater than cast film.

  • Cling

    Blown stretch film is produced with a 1-sided cling and cast film has cling on both sides.

  • Clarity

    The cast film process produces a higher level of clarity by casting the molten resin over a cooled roller, reducingBlown film is cooled slowly, increasing the crystallization and reducing the clarity.

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