Creating Products With Injection Molding

By Genevive B. Mata


Creating plastic toys, pieces and components can be done in a number of ways, depending on certain factors such as to what the purpose of that item is to be. Each aspect of this procedure has to be carefully calculated to accommodate for each product's specific structural and functional issues. One method that proves most effective in many circumstances is injection molding.

This is a manufacturing process by which items are produced when the fabricating materials are injected into a mold. There are several substances that can be used to create the parts and multiple methods by which to do it. Which of these combinations is best will be determined by the performance specifics of the finished product.

When it comes to making either a single piece, or having the same item mass produced, this is the most commonly utilized method for plastic fabrication. This is how products like bottle caps, molded figures and toys, kitchenware, containers, combs, certain components for machinery and housings for electronics are generally made. Many parts of an automobile, from a small accent piece to a full door panel, may also be created this way.

A large material selection and a low cost of labor are just two of the many advantages to this type of manufacturing. Thousands of exact copies may be produced in a short time and with the right substance mixture, the items are more stress tolerant. Pieces rarely need additional finishing as the molds are precisely tooled and generate a minimal amount of waste.

The method does have a couple of disadvantages worth note. Due to set up procedures, there are some operational limits in place. The main thing is that creating the first mold can be a bit expensive, unless it is going to be used to generate multiple pieces, in which case the cost will eventually even out.

Polymers of all sorts, all thermoplastics and quite a few elastomers and thermosets, are acceptable for use in this process. The sheer number of these substances provides tens of thousands of fabrication options. Many of these can be combined together or mixed with complimentary alloys in order to create a formula that is best suited for the intended purpose.

What the molded piece will be used for will determine which material, or mixture of multiple ones, will be the best choice. Some products will need to withstand a greater amount of stress or function in more intense temperatures than others will, so the composition must meet those standards. The range of possibilities of what may be created in this manner is vast and varied.




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