Injection molding is defined as a general manufacturing process adopted to make plastic components for a wide variety of products. This method is used to manufacture parts that differ in size, application and complexity and the process involves the use of a machine called an injection molding machine along with the mold and raw plastic. The process involves melting the plastic in a molding machine along with injecting it into a mold from where it is cooled and solidified into the final product.
The advantage of using Chinese manufacturers is that there are more financial savings compared to western plastic injection or production. The cost savings involved in mold construction is around 30% to 50% when compared to US mold makers. Another advantage of them is the fast production of designs along with the very fast delivery of the first samples of plastic products.
There are other advantages such as creating a larger capacity and the possibility of inexpensive product finishes such as screen printing, sublimation technique, tampo printing, stamp printing etc. It is also economical and has the option of quick manual assembly. It offers various packaging options such as cardboard boxes, blisters or products sourced from different companies.
Other major advantages include the availability of complex parts and structures, high efficiency along with easy and simple mass production of plastic parts, flexibility in terms of materials and colors and easy engineering of the molding process. It is also the most cost-effective way to obtain plastic products as the resin cost and manufacturing process is much lower when compared to metal machining and other molding processes.
Chinese manufacturers also offer services such as advising on rapid prototyping or prototyping. They also have experience in fields such as rubber and TPR/ TPE or TPO products. They are knowledgeable in engineering plastic products and other materials along with high experience in plastic two component injection molding.
Most of the manufacturers also involve 3D CAD Design along with engineering and product development from their original idea. They also incorporate rapid prototyping with the help of CNC milling from POM, PA, ABS or other available plastic types. Molds are usually completed within 20 to 25 days and the price of plastic molds ranges from $1500 to $3500.
There are six main steps involved in mold manufacturing namely mold fitting, material baking, mold clamping, material injection, cooling and solidification of the part and ejecting. Most manufacturers also ensure quality control of products produced by plastic injection molding with inspection and analysis procedures along with complete dimensional inspection of all plastic molded components and reports sent to clients for review.
Plastic injection molding machines ensure that each plastic mold is of the highest quality and is thoroughly inspected for defects in visual, dimensional and functional aspects before shipping plastic products to clients worldwide.