Investigation of the mold-filling phenomenon in high-pressure foam injection molding and its effects on the cellular structure in expanded foams

• Published in: Polymer (Guilford) Vol. 160; pp. 43 - 52
• Main Authors: Tromm, Mike, Shaayegan, Vahid, Wang, Chongda, Heim, Hans-Peter, Park, Chul B.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 03.01.2019; Elsevier BV
• Subjects: Blowing agents; Carbon dioxide; Cavity pressure; Cell size; Cells; Cellular structure; Cytology; Deformation; Dissolution; Filling; Foams; Gas mixtures; High-pressure foam injection molding; Injection; Injection molding; Mold opening; Molds; Morphology; Nitrogen; Packing; Parameters; Plastic deformation; Plastic foam; Plastic foams; Polystyrene; Polystyrene resins; Pressure; Statistical analysis; μCT; High-pressure foam injection molding; μCT; Cavity pressure; Carbon dioxide; Mold opening; Polystyrene; Nitrogen

Mold filling plays a crucial role in determining the cells' structural morphology and uniformity in high-pressure foam injection molding. This process affects the formation, deformation, and dissolution of premature cells, which nucleate in the melt/gas mixture during the mold filling. We inves...