Blown Stretch Film
- Hand or machine
- Tear and puncture resistant
- Great for irregular loads
- Provides excellent cling
- 55 gauge – 120 gauge
- Hand roll width 12” – 18”
- Machine roll width 20” or 30”
Cast Stretch Film
- Hand or machine
- Reduces warehouse noise
- Best for uniform loads
- Film stretches up to 250%
- 60 gauge – 120 gauge
- Hand roll width 12” – 18”
- Machine roll width 20”, 30”, or wide web
Differences between Blown and Cast film
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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.
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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.
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Tear Resistance
Blown films have a greater tear resistance greater than cast film.
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Cling
Blown stretch film is produced with a 1-sided cling and cast film has cling on both sides.
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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.