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. […]
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, […]
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. […]
Transfer molding, like compression molding, is a process where the amount of molding material (usually a thermoset plastic) is measured and inserted before the molding takes place. […]
Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, while heat and pressure are maintained until the [...]
The type of fouling (chemical make-up and physical characteristics) or residue the molding process leaves behind on your tooling will help determine your cleaning requirements. Many resins contain stabilizers, […]
Mold cleaning is a process where major maintenance bottlenecks often occur because molds are pulled faster than they can be cleaned and made production-ready. I have visited plants where molds waiting to be cleaned line hallways and toolrooms, taking up valuable bench space. […]
Creating a repair plan for some companies usually means setting a mold on a repair technician’s bench with instructions such as “mold flashing, fix it.” Other companies might have a log or notebook that follows the mold, which the technician must decipher and then decide what to fix. […]
Regardless of mold type, the goal of a maintenance shop always is the same: get a mold production-ready after it has been removed from service. […]
In order to understand the causes and related problems associated with heater failure we should first understand the construction of a heater. […]