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Cary Products is a plastic injection molding manufacturer with over 60 years of experience, we work to transform a customer’s design into a finished product by working closely with our material suppliers. Often molded parts can be designed to replace several metal parts with a single plastic part reducing purchased components and assembly costs. Throughout the years, Cary Products has been able to offer its customers superior plastic injection molded products to replace heavy non-insulative metal parts.
Plastic Injection Molding Process
Plastic injection molding is a manufacturing process that makes possible the production of highly finished and detailed plastic articles at very high repeatable production rates under high tolerances. It requires the skills and mastering of four basic control parameters: temperature, time, pressure, and cooling of the heated molten plastics being injected into a mold cavity(s) that forms the desired part. Here’s how we do it:
- The basic plastic injection molding machine uses a hopper to feed the granular plastic particles into a heated barrel or unit that makes the plastics in a molten state.
- The heated barrel has a reciprocating screw-like plunger that in turn pushes the molten plastic under hydraulic or electric/mechanical force into the cavity(s) of a closed together mold that forms the designed part.
- The closed mold is held closed under high force during the injection and cooling of the molten plastics by either a mechanical toggle mechanism or by a large hydraulic cylinder or by a combination hydro-mechanical toggle mechanism.
- The mold is cooled by controlled temperature water circulated through each of the mold halves.
- Upon opening the mold by the machine clamping mechanism the part is ejected out of its part cavity(s) and the mold is closed again to repeat the process over again at a rapid rate.
What Determines if Something Should be Molded?
The decision to mold a part is based on its design complexity, mold cost, selective plastics, and processing equipment required to make the part. In short, one must justify that a product that is high enough in volume in its end use marketplace application that enables the cost of tooling a new tool and processing to be surpassed. Often times the volume, cosmetics, and design complexities of the part may dictate the level or grade of a tool to be made out different grades of steel and/or the use of aluminum in mold bases and in cavity inserts can help control costs. The expected tool longevity is also a factor in consideration as well.
What Are Plastic Processing Machines Used For?
There are many plastic processing machines designed specifically to make a particular shaped part for a selective plastic material at its lowest effective cost. Examples:
Once a product processing method has been chosen, the product can be designed into a CAD model for reviews and prototyped for further studies and testing. This is followed by the mold design for the chosen processing method. The selection of the plastic material is a critical part of the design of the part.
Thermoplastic Injection Molding Manufacturer
Thermoplastic injection molding has been the heart of the Cary Products company for 60 years in the Dallas-Ft. Worth area. It has allowed us the flexibility to meet what customers have demanded which is a competitive price, high-quality product with on time delivery. With over a hundred years of combined experience, our staff we will be more than able to recommend the best criterions to achieve your objective(s) for a quality product at the best competitive price.
At Cary Products, we have 33 plastic injection molding machines with 716 tons capacity. We specialize in full customization of your molds including custom colors, custom engineered resins and more. We are professionals in many injection molding services including prototyping, tool transfer, metal to plastic conversion, and more.
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