Education and Training:Is the new molding house educated on your company’s needs? Are they updated on the processing manuals supplied by the material manufacturer? Your molding company should be aware of the mechanical properties that were advertised and defined in?the literature provided by the material?manufacturer.?Your engineering department believed these mechanical properties to be important, therefore they should be known and implemented. They will ultimately result in the survival of your product in its finished environment.Does my new molder have the proper knowledge to process the resin of my choice? Do they know how to utilize the best molding practices? Are they aware of resin drying time, heat history, and molding temperatures, etc., etc.? Be sure your new molder is aware of your machine settings. This is crucial in determining a dependable and high quality outcome for your products.Does the prospective molder have an effective training program for the employees??Are the employees aware of expectations, processes, and deadlines? Communicate your needs with your potential partner.Does the new molding house know how to handle raw materials; specifically the materials that will develop new products???Knowledge of the materials is essential in the molding technique. In plastic injection molding cold flow marks voids can occur due to:Inadequate Water CoolingAbsence of Flow Dividers in Water ChannelsInadequate CoolingInadequate Cavity PressureImproper Injection SpeedImproper Melt TemperatureIncorrect Gate Style or LocationPart Self-Destruction But, with modern advances in engineered resins and plastic molding capabilities, manufacturers are no longer bound by the heavy, expensive and restrictive metal parts of yesterday. Today, there are only a few companies around the world who specialize in Engineering-Grade molding projects. Between the rarity of this specialty and the global freight distance, it can be a real challenge to find a capable domestic company to handle these projects.

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Residence time is the amount of time the resin is exposed to heat in the barrel. If there is inadequate residence time the molecules will not absorb heat uniformly throughout the material. The under-heated material will become stiff and will cool before the mold is properly packed. This causes the molecules to shrink at different rates during the cooling process which results in mold warpage. Some of the most common overmolding materials include:HDPEABSPMMA (Acrylic)Acetal Copolymer (POM)PEEKPEIPBTR Check out our current openings now, or send us your resume we’ll do our best to find a position that’s right for you!Have questions about our process? If your plastic injection molder suggests a particular gate size or location that you do not feel is optimal it’s important to seek out a second opinion from another plastic injection molding expert. In plastic injection molding, the first thing to occur in the process is filling the mold with a given resin. Improper plastic injection molding fill rate can result in various part defects, both in part strength and aesthetics.

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Our certified Master Molders are technically-trained in the methods, strategies techniques of scientific plastic injection molding. They can solve the toughest molding challenges and optimize products for performance, cost efficiency. PMC specializes in molding engineering-grade resins. If you are using a commodity molder but believe your application falls into the engineering-grade category, we can help. Contact us and we can help you select the right material for your part.Molding Gate Design Plastic injection molding quality is a very real concern for manufacturers – particularly for those who produce mission critical parts. One of the unique advantages of plastic injection molding with PMC is our Quality Commitment to our customers.How We Achieve it: PMC is well known in the industry for being able to troubleshoot and solve complex molding issues. We offer a comprehensive range of plastic molding services including mold design assistance, modeling, prototyping, manufacturing, and testing. A leading cause of failure in plastic injected molded parts is improper material selection. Strength requirements, operating requirements, and aesthetics all play a role in selecting the right material for your part.