Packaging Styles - The Graphic Design: Reference and Specification - page 98

Pull-Strip or Zipper Carton
Commonly used to prevent tampering. The pull-strip provides an irreversible method of
opening. Suitable for cereals, crackers, and other foods contained in an interior, moisture-
proof pouch. Note: All flaps must be glued or have locking closures to prevent access via
another entrance and to ensure pull-strip will be properly aligned.
Pour-Spout Container
Score lines along the container's top and side allow the consumer to access the product
and pour the contents in a controlled manner. This type of carton is commonly used for
cereal and detergent.