Prototype Molds
(Type 404) (Grade 5, Grade 6) (Class 105)

Typical applications for prototype injection molds are for conceptual or mechanical design validation purposes. They are constructed from aluminum or steel. The molds are designed with inserts for molding detail, or the detail may be machined in post-molding with a secondary operation.

Pre-production Molds
(Type 402,403) (Grade 3, Grade 4) (Class 103,104)

Pre-production or limited production injection molds are usually used as a “bridge” between prototype molds and production molds. They satisfy the need for a higher quality automatic mold with the ability to produce larger volumes of parts. If your production quantities are low this tooling class may be sufficient for all of your production needs.

Production Molds (grade 1, grade2,) (Type 402,402) (Class 101,102)
	Production molds are designed for high volume production of plastic parts. These molds are designed for anticipated volumes of over 1 million open/close mold cycles. These molds are constructed of only the best materials and are designed for maximum reliability and ease of maintenance. They may be runnerless (hot runner) molds for maximum efficiency.

Molding

Marathon Mold has the capability to both sample molds and run production in its own facility. We can sample and run molds up to 40 tons clamping pressures and 8 X 12 in size.

Moldflow Analysis

This complex software allows for importing the part via an STL format. Then the gate and runner locations are modeled. An analysis is then performed and the results show exactly how the part will fill.

Mold Design

Mold Design using CAD (Computer Aided Design) The mold design process takes the customers part requirements and develops the mold around the entire part. Engineering of all moving actions as well as proper cooling properties are incorporated during the design phase. It is extremely important that during this phase consideration be given to the tremendous internal pressures developed in the injection molding process.