About plastic molding company

Recycling of raw plastic material is a very large market within the injection molding industry. In fact, injection molding manufacturers save costs and waste by using millions or billions of tons of recycled plastic every year.

Almost all plastic injection molded parts will have a recycling code molded into the part. This code indicates which type of plastic the part is made from. This helps recycling companies properly group the plastic parts within their processing.

The raw plastic material, usually in the form of pellets, is fed into the injection molding machine and advanced towards the mold by the injection unit. During this process, the material is melted by heat and pressure. The molten plastic is then injected into the mold very quickly and the buildup of pressure packs and holds the material. The amount of material that is injected is referred to as the shot. The injection time is difficult to calculate accurately due to the complex and changing flow of the molten plastic into the mold. However, the injection time can be estimated by the shot volume, injection pressure, and injection power.