Glossary

Black specks are a form of injection molding machine contamination, produced by carbon build-up. Black specks can be a nuisance for companies processing thermo-sensitive resins. It is important to...
Blow molding is a manufacturing process by which hollow plastic parts are formed. In general, there are three main types of blow molding: extrusion blow molding, injection blow molding, and stretch...
Blow molding (also known as blow molding or blow forming) is a manufacturing process by which hollow plastic parts are formed. In general, there are three main types of blow molding: extrusion blow...
Chemical purging is a method of purging injection molding machines of residue, colorants, and other contaminants when changing molds, materials, or colors. This method has been adopted by many...
The color or colorant is what is used in the plastic industry to die the plastic. The color can be in different forms: Liquid Color, Master batch, or Powder.
A color change is the process of changing the color of mold material in molding systems. Two major costs associated with color changes are downtime and scrap resin. Ultra Purge chemical purging...
Concentrated grade chemical compounds are formulated to be mixed with production resin. All grades of Ultra Purge have a corresponding concentrated (Pure) grade.
An extruder is a machine used for melting plastic polymer into molten form for conversion to certain shape. Based on the extruder design and material used, all Ultra Purge grades can be used to clean...
European Union legislation defines food contact materials as "all materials and articles that come directly into contact with food products or are intended to come into contact with them." Ultra...
Term used by the FDA to define Generally Recognized as Safe substances. All ingredients of Ultra Purge are GRAS as substances used indirectly to produce human food.
A hot runner system is an assembly of heated components used in plastic injection molds that inject molten plastic into the cavities of the mold. The cavities are the part of the mold shaped like the...
The Hot runner tip insulator is the plastic that stays between the tip of the hot runner and the cavity plate. The tip insulator may be one of the cause of long color changes.
The Hot Runner Manifold if a distributor that takes the hot melted plastics to the hot runners nozzles.
Injection molding is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold...
Material changes take place when transitioning from one resin to another. In many situations a commercial purging compound is recommended for this type of change over in order to reduce downtime and...
Mechanical purging is a method of purging injection molding machines of residue, colorants, and other contaminants when changing molds, materials, or colors. Mechanical cleaners are used to purge the...
PET (also named PETE) is a kind of polyester material for fiber, injection molded parts, as well as blow-molded bottles and jars. A PET preform is PET material subjected to preliminary, usually...
Moulds Plus International is a leading supplier of the most easy-to-use, effective, and eco-friendly purging compounds in the plastics industry. With production facilities in Italy, USA, and Mexico,...
Preventative maintenance (or PM) is a maintenance schedule of tests, measurements, adjustments, and parts replacement, performed specifically to prevent faults from occurring. Using Ultra Purge as a...
A purging compound is a plastic resin compound or liquid designed to clean all primary plastic machinery (injection molding machines, blow molding machines, extruders) when changing color, resin or...
Scrap resin is leftover resin produced during purging processes. Companies can reduce scrap resin by using a commercial purging compound. Scrap generated when purging with Ultra Purge can either be...
The screw and barrel are components of injection molding machines and extruders. Ultra Purge chemical purging compounds effectively clean screws and barrels, minimizing downtime during color changes...
Starting up a machine after an extended shutdown can potentially be a difficult task. If a machine is not shut down properly carbon will form on the screw and black specks will show up in the parts...
Soak time is the amount of time required in order for a chemical purging compound to complete its reaction. Ultra Purge purging compounds require only a 3 to 5 minute soak time. Ultra Purge is also...
A stack mold is a type of plastic injection mold designed for high production runs. Stack molds generally have one cavity and multiple cores, and have the ability to do multiple operations in the...
Thermo sensitive Resins are thermoplastic resins that tend to oxidize and degrade when exposed to high temperature for a long time.
Ultra Purge is a commercial purging compound developed by Moulds Plus International designed to help solve all the problems associated with mold material and color changes. The formulation of Ultra...