Medical Blow Molding
Stretch (Tube) Blow Molding
Stretch blow molding utilizes a mold into which a polymer tube is inserted, heated and expanded under pressure to conform to the mold cavity. This process allows for a hollow, seamless, three-dimensional shape. Molds are generally economical due to the low-pressure process and limited complexity of design. Stretch blow molding is a primary process for producing high-pressure balloons.
Extrusion Blow Molding
Extrusion blow molding is a process where resin pellets are melted created a hollow tube-like structure called a parison. The parison is then pinched between two half-cavities of a mold, and air is blown into it. The air pressure expands the tube to conform to the shape of the mold (similar to bottle-blowing). Extrusion blow molding can produce a variety of geometries, balloons, vials, cuffs, bellows, etc.
Polyzen has the ability to understand the processing requirements to support customers fully in material selection, tooling design, development, and production.