Inroduction to New Applications of Blow Molding
Coextrusion Blow Molding of Large PartsCoextrusion is used extensively in small bottles and containers, but increasingly also for large blow molded parts (18.92 liters or 5 gallons and larger). […]
What is Stretch blow molding?
With the commercial introduction of containers, stretch blow molding became a common term in the blow molding industry. Stretch blow molding is the method of producing a plastic container from a preform or parison that is stretched in both the hoop direction and the axial direction when the preform is blown into its desired container [...]
What is Injection blow molding?
The injection molding phase consists of injection molding a thermoplastic material into a hollow, tube-shaped article called a preform. The preform is transferred on a metal shank, called the core rod, into a blow mold. […]
What is Extrusion blow molding?
In extrusion blow molding (EBM), plastic is melted and extruded into a hollow tube (a parison). Blow molding is the forming of a hollow object by “blowing” a thermoplastic molten tube called a parison in the shape of a mold cavity. […]
Introduction to History of blow molding
The process of using air to blow hot material was first used by the Syrians. The method is attributed to Syrian glass workers in the first century BC, who realized that a glass bulb on the end of a blow pipe could be shaped into many useful hollow forms, with handles and feet and decorated [...]
What is blow molding?
Blow molding, also known as blow forming, is a manufacturing process by which hollow plastic parts are formed. It is a process used to produce hollow objects from thermoplastic.In general, there are three main types of blow molding: extrusion blow molding, injection blow molding, and stretch blow molding. […]
Introduction to the History of die casting
The earliest examples of die casting by pressure injection – as opposed to casting by gravity pressure – occurred in the mid-1800s. […]
Die Casting vs. Other Processes
Die casting vs. plastic molding – Die casting produces stronger parts with closer tolerances that have greater stability and durability. Die cast parts have greater resistance to temperature extremes and superior electrical properties. […]
How to Choos the Proper Alloy
Each of the metal alloys available for die casting offer particular advantages for the completed part. […]
Introduction to Die Construction
Dies, or die casting tooling, are made of alloy tool steels in at least two sections, the fixed die half, or cover half, and the ejector die half, to permit removal of castings. Modern dies also may have moveable slides, cores or other sections to produce holes, threads and other desired shapes in the casting. [...]