When is the last time you purchased or used a product made from plastic and it broke or failed? When the failure point was examined, you realized someone with little knowledge must have designed the product, and the mold assisted in creating the failure site.

Did anyone review the part for a potential failure? In most case, the answer is “ no. ” Time was not spent on examining the design, mold, material, assembly, decoration, and so on. Obviously, if it failed from normal use, then no one checked the design.

This is the primary reason all departments provide input into the design and manufacture of a new or existing product to ensure it can to perform its end – use function as required. Sharp corners and a lack of adequate radii in a mold are the prime reasons for most plastic part failures.

How this is done is not always easy, depending on the structure of the customer ’ s company and departmental interaction. In this analysis, I shall assume they are involving each department and their input is welcomed.

If the company is an outside supplier, it is hoped it will exercise its infl uence to assist in initial design analysis. Or during contract negotiations, the supplier should infl uence the company to review the product for manufacture, and the customer should accept the knowledge the supplier can offer from its experience in the molding business.

This process will involve the extensive use of checklists and interaction of employees from both companies to ensure the product produced will be as good as it can possibly be and will still stay within the expected pricing guidelines.

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