Patent ID: 6536187
Filing Date: 2003-03-25
Classification: B29C,B29L,B65B,Y10S

Abstract:
A method for forming a closure on a carton blank in a tubular form, the carton blank formed from a composite material having a polymer layer on at least one side thereof, the method comprising the steps:providing an internal mold tool defining a portion of a mold cavity therein, the mold tool being in flow communication with a polymer injection system; positioning a tubular carton blank around and engaged with the internal tool, the carton blank being in an at least partially erected state having providing a movable tool defining another portion of the mold cavity therein, the fixed tool mold cavity and the movable tool mold cavity defining a desired closure configuration; engaging the movable tool with the carton blank on an opposing side of the carton blank from the internal tool to form the mold cavity; pressing the movable tool to the carton blank and the fixed tool; injecting a polymer into the mold cavity to form the desired closure; and releasing the closure from the mold cavity.