Parting line – A line on a part formed when the two sides of the mold come together. Polymer – A substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bonded together, e.g., many synthet…

Injection molding is the most common plastic molding process and is used to create a wide variety of complex parts of different size and shape. Whether it’s an overcap for a water bottle or a vinyl window part being manufactured, injection…

Blow molding – well suited for hollow objects, like bottles The process follows the basic steps found in glass blowing. A parison (heated plastic mass, generally a tube) is inflated by air. The air pushes the plastic against the mold to fo…

Automatic molding, a semi-automated form of compression molding, is the process Sunkoo uses for the manufacture of medium-volume to large-volume net molded and near net molded PTFE components. The automatic molding process requires dedicat…

Sunkoo’s enormous strength comes from a wonderful combination of its highly efficient and professional management and a dedicated workforce of qualified and experienced engineers and technicians and marketing personnel, which in turn, lead…

Extrusion operators, sometimes called extruding and drawing machine operators, control and monitor machines that shape thermoplastic materials. They work in a number of manufacturing industries, including general plastics manufacturing, au…

By plasticizing, there are dry extrusion and wet extrusion processes and by pressurizing there are continuous and intermittent extrusion processes Continuous production yields a high efficiency, simple operation for a wide range of applica…

For industrial manufacturers, the methods of injection molding and/or extrusion are specified to make products with different shapes and sizes. The molten die-casting method is the basis of the injection molding process. The injection-mold…

Plastic extrusion is a process for converting plastic materials from solid to liquid states and reconstituting them as finished components. First, plastic pellets are gravity fed from a hopper into a jacketed screw. As the screw turns abou…