This study took food-grade polypropylene packaging products as the research project and discussed how to control extrusion sheet thickness vacuum thermoforming quality weight. The objective was find key factors for reducing costs energy consumption. aspects that may influence molding were analyzed using literature in-depth interviews with scholars experts. These four main are (1) of production,...

In order to promote the comprehensive utilization of corn straw and development field water-saving irrigation technologies, a kind underground composite pipe-forming device mixed with soil extrusion molding was designed. The key extrusion-forming components affecting forming rate pipe were optimized by taking diameter winch blade, shaft winch, pitch as variables output power test indices. best ...

Due to the very long operational lifetimes (up 100 years) of polyethylene pipes, there is a strong demand for accelerated testing pipe materials experimentally prove ability certain material achieve such lifetime. Among tests performance, cracked round bar (CRB) test most convenient. The CRB takes advantage cyclic loading that applied on cylindrical specimens with circumferential notch in middl...

Material Extrusion (MEX) is an advanced technology for polymer 3D printing and countless printers are commercially available. MEX has also been demonstrated ceramics. For that purpose, thermoplastic binders filled with high loads (>40 vol%) of a ceramic powder. The printed parts subsequently debound sintered. In contrast to most printers, the printer presented herein works granulated feedstock ...

The quality of injection molded products is influenced by several factors: the geometry product, polymer used, mold, technological parameters processing and molding machine itself. For this reason, modelling process computer justified widely used in industry. Modelling, however, complicated complex flow dynamic thermal processes during molding, changes material structure polymer. Various filler...