Material selection is a key factor in many aspects of injection molded Pet Preform Mould products. In most cases, it affects some or all of the following: physical properties, appearance, operation, interaction with other materials and components, and durability. Most importantly, material selection plays an important role in your materials and production costs, as well as their subsequent impact on your bottom line. With all of these factors in mind, it's clear that choosing a material for your injection molded product should not be taken lightly.
Guidelines
However, before you actually start choosing materials, you have a bigger choice. Plastic substrates for injection molding can be divided into two broad categories: thermoplastic elastomers (TPE) and thermoset elastomers. Although there are many differences between the two, the key and wide difference between them is that the TPE plastic liquefies on heating and hardens on cooling – and the process can be repeated (up to a certain point). On the other hand, thermoset plastics harden and strengthen when heated (or "cure") to a certain point, and they remain in a cured state regardless of the additional heating application. Remember the good rules of thumb for differences? Thermal "solidified" plastics are permanently "solidified".
Between TPE and thermoset plastics, one material is no better than the other. Your needs, budget and products really determine your best choice (usually in manufacturing). Choosing TPE injection molding offers many great benefits, and today we will take a look at these and some guidelines to help you succeed in the production of thermoplastic elastomers.
Understand the physical properties of thermoplastic elastomers
Now that you know the important and unique aspects of TPE – it liquefies on heating and solidifies on cooling – we can learn more about how thermoplastics work in use. Generally, thermoplastics are highly flexible materials that also exhibit excellent tensile strength. In other words, they can be stretched and bent to a fairly high degree while returning to their original shape, remaining intact and not torn.
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