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A list of major plastic companies located worldwide. This list includes companies with the following products: plastic hose system solutions, plastic raw material manufacturing, plastic raw material trading, plastic film extrusion, plastic injection moulding, plastic blow moulding, plastic film rotogravure printing, plastic film flexographic printing, plastic slitting, plastic lamination and ...
Mould or die are the common terms used to describe the tool used to produce plastic parts in moulding. Since moulds have been expensive to manufacture, they were usually only used in mass production where thousands of parts were being produced. Typical moulds are constructed from hardened steel, pre-hardened steel, aluminium, and/or beryllium ...
The blow molding process begins with softening plastic by heating a preform or parison. The parison is a tube-like piece of plastic with a hole in one end through which compressed air can enter. The plastic workpiece is then clamped into a mold and air is blown into it. The air pressure inflates the plastic which conforms to the mold.
The term moldmaker may also be used to describe workers employed in fabricating dies and metal moulds for use in injection molding and die-casting, such as in the plastics, rubber or ceramics industries, in which case it is sometimes regarded as a branch of the trade of toolmaker. [2] The process of manufacturing molds is often highly automated.
A die is a specialized machine tool used in manufacturing industries to cut and/or form material to a desired shape or profile. Stamping dies are used with a press, [1] as opposed to drawing dies (used in the manufacture of wire) and casting dies (used in molding) which are not. Like molds, dies are generally customized to the item they are ...
Tube forming dies allow for continuous extrusion of thick walled (relative to blown film extrusion) tubes and pipes. [5] The dies themselves are almost identical to those used in blown film extrusion; the only major difference is the gap between the inner mandrel and outer die wall.