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Injection molding  is a manufacturing process for producing parts by injecting molten material into a mold. Material for the part is fed into a heated barrel, mixed (using a helical screw), and injected into a mold cavity, where it cools and hardens to the configuration of the cavity. Injection moulding is widely used for manufacturing a variety of parts, from the smallest components to entire body panels of cars.

Injection molding uses a special-purpose machine that has three parts: the injection unit, the mold and the clamp. Parts to be injection-molded must be very carefully designed to facilitate the molding process; the material used for the part, the desired shape and features of the part, the material of the mold, and the properties of the molding machine must all be taken into account. The versatility of injection moulding is facilitated by this breadth of design considerations and possibilities.

Computer Numerical control (commonly called CNC) is the automated control of machining tools (such as drills, lathes, mills and 3D printers) by means of a computer. A CNC machine processes a piece of material (metal, plastic, wood, ceramic, or composite) to meet specifications by following a coded programmed instruction and without a manual operator directly controlling the machining operation.

A CNC machine is a motorized maneuverable tool and often a motorized maneuverable platform, which are both controlled by a computer, according to specific input instructions. Instructions are delivered to a CNC machine in the form of a sequential program of machine control instructions. The program can be written by a person or, far more often, generated by graphical computer-aided design (CAD) software and/or computer-aided manufacturing (CAM) software.

CNC is a vast improvement over non-computerized machining that must be manually controlled or mechanically controlled by pre-fabricated pattern guides. In modern CNC systems, the design of a mechanical part and its manufacturing program is highly automated. The part’s mechanical dimensions are defined using CAD software and then translated into manufacturing directives by computer aided manufacturing (CAM) software. The resulting directives are transformed into the specific commands necessary for a particular machine to produce the component and then are loaded into the CNC machine.

Plastic fabrication is a general term that describes the manufacturing or assembly of products made from plastic materials. During the fabrication process a product may be manufactured using a wide variety of techniques like blending/compounding, molding, extrusion, thermoforming, die cutting, lamination, welding, or any combination of techniques.

E&C Plastics has the technology and skills to create just about any custom plastic products. Contact us for a consultation so that we can start designing your next great idea!

Injection moulding, CNC machining, and fabrication can be performed with a host of materials mainly including metals, glass, elastomers, confections, and most commonly thermoplastic and thermosetting polymers.

We have a plethora of materials in stock and are able to acquire most specialty materials. Contact us and we’ll be happy to help you choose the right material for your project.