We make device components that help our military defend themselves, and make it possible to return home to their families safely. Many plastic mold design projects have landed with us because others were not able to manufacture a product the way the customer had intended. Find out if plastic injection molding is right for your gear manufacturing needs by contacting our experts at PMC today. Sometimes, additional gates must be added in order to reduce pressure loss reduce molded-in stress.Problem: Lack of Ejection Uniformity

What Material Is Used For Injection Molding

Oftentimes parts must pass certain requirements in order to go to market. These may be private, governmental, national or international regulations. We provide a comprehensive range of plastic molding services including mold design assistance, modeling, prototyping, manufacturing, and testing. Some plastic engineered resins being used to replace metals include:ABSAcetal Copolymer (POM)Acrylic (PMMA)LDPEPAIPEEKPETPURPPS Secondary, post-molding operations are sometimes necessary to complete the assembly.Why Choose PMC? PMMA is an economical material used for applications
requiring excellent optical, light, transmittance, and weatherability. Common products
include lighting and optical applications. PMMA is sometimes referred to as
acrylic glass as it is a lightweight, shatter-resistant alternative to glass. Advantages
include:   Resistance to UV radiation and weatheringHigh refractive index and clarityGreat light transmissibility (white light
transmittance can be as high as 95%)Has the greatest surface hardness of any
plastic, making it scratch resistantDyes can be added to get a certain colorChemical resistance

How To Make Molds For Plastic Injection

At PMC, we provide injection mold?design consultations?to correct any mold designs that you already have. Many times, customers come to us for guidance to finish the plastic part design to the point of manufacturability. There are many important factors to recognize during the mold design process in order to create high quality parts.? If there is inadequate mold injection pressure or hold time the molecules will not be constrained, which allows them to move around uncontrolled during the cooling process. This causes the part to cool at different rates and results in mold warpage. These plastic injection molders use what are called commodity resins, such as polyethylene and polypropylene. These are common resins that are not engineered for extreme conditions. Below, are important factors that affect cooling rate and the final molded part…Mold Cavity Pressure If the barrel temperature is too low, the resin is not able to heat up to the proper flow temperature. If the resin is not at proper flow temperature and is pushed into the mold it will solidify before the molecules are properly packed. This causes the molecules to shrink at varying rates which produces mold warpage