The objective of this study is to present a new numerical strategy using soft computing techniques to determine the optimal die gap programming of extrusion blow molding processes. In this study, the design objective is to target a uniform part thickness after parison inflation by manipulating the parison die gap openings over time. To model the whole process, that is the parison extrusion, the...

Nowadays, there is an increasing interest toward the substitution of oil-based polymers with biobased polymers. Poly(hydroxyalkanoates) (PHAs) emerge as a new class of biopolymers, that have gained more and more attention due to their thermoplastic behaviour, acceptable mechanical properties and biodegradability in compost conditions1. Applications based on PHAs, as a matrix, are generally foun...

Nowadays, injection stretch blow molding (ISBM) process represents the most employed technology to produce plastic bottles. An important step of this is heat conditioning stage which performed within infrared ovens by use powerful halogen lamps. Homogenizing temperature distribution along and inside preform at end one key parameters determine final quality bottle (thickness, mechanical properti...

The synthesis of mellophanic dianhydride (MEDA) from biosourced 1,2,3,4-benzene tetracarboxylic derivatives and its use as a chain extender for mechanically recycled PET (R-PET) an alternative to traditional oil-based pyromellitic (PMDA) is reported. rheological tests performed on the R-PET extruded with MEDA have shown similar results those obtained PMDA, dynamic mechanical thermal analysis (D...