TECHNOLOGIES
At NovusPack we can modify the polymer’s mechanical properties to reach superior wall-thickness control, material resistance, and clarity resulting in the highest quality levels available to our markets.
In Extrusion Blow Molding (EBM), plastic is melted and extruded into a hollow tube (a parison). This parison is then captured by closing it into a cooled metal mold. Air is then blown into the parison, inflating it into the shape of the hollow bottle, container or part. After the plastic has cooled sufficiently, the mold is opened and the part is ejected and the excess of materials are spin-trimmed.
In Single Stage Injection Stretch-Blow Molding, the three processes involved are done in the same machine, thus reaching the highest quality level known. The process is divided into three:Injection Molten polymer flows into the injection cavity via the hot runner block, to produce the desired shape of the PREFORM with a mandrel (the core pin) producing the inner diameter and the injection cavity the outer. After a set time the injection molds and core pins part and the preform held in a neck carrier is rotated. Stretching and Blowing Once conditioned to the correct temperature the preform is ready for STRETCHING and BLOWING to the finished shape. Once the preform is within the BLOWMOULD area the molds close, a stretch rod is introduced to stretch the preform longitudinally and using two levels of air pressure, the preform is blown circumferentially. Then the product rotates again. Discharge After a set time for cooling, the molds open and the preform is removed via robotics.
