Patent ID: 9017594
Filing Date: 2015-04-28
Classification: B29C,B29K

Abstract:
1. A forming method, in a mold provided with a wall forming a cavity, of a container from a blank made of a material, which comprises: A boxing operation comprising locally pushing back the material of the blank by an insert movably mounted with respect to the wall of the mold between a retracted position in which the insert is retracted into the wall, and a deployed position in which the insert protrudes with respect to the wall, in order to form on the container, by pushing back, a hollow reserve projecting toward an interior of the container; A local pressurization operation, after formation of the hollow reserve, comprising injecting a pressurized fluid between the insert and the hollow reserve, to create a film of pressurized fluid between a front surface of the insert and the hollow reserve, prior to the retraction of the insert and the ejection of the container when the mold is opened.