blow molding process outline molding process in which air pressure is used to inflate soft blow molding process plastic into a mold cavity extrusion blow molding important for making one ...
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...Blow molding process outline in which air pressure is used to inflate soft plastic into a mold cavity extrusion important for making one piece hollow parts with thin walls such as bottles injection since these items are consumer beverages mass stretch markets production typically organized thermoforming quantities analysis of polymer accomplished two steps example fabrication starting tube called inflation the desired final shape forming parison by either or dr m medraj mech eng dept concordia university lecture injected molded around blowing rod opened and transferred pinched at top sealed bottom metal inflated conform pin halves come together blown product removed so that it takes remove solidified part materials products variation extends downward step stretching more favorable stressing than conventional limited thermoplastics resulting structure rigid transparency high density polyethylene polypropylene pp impact resistance most widely material terephthalate pet polyvinylchloride ...