Plastic Injection Molding
The basic approach to product engineering for plastic injection molding in China needs to be radically different to that for plastic molding in the West.
In the West a manufacturing engineer will optimize the plastic part design for quick, low labor intense assembly, by designing click systems for example. This leads to a relatively high investment in tooling due to the tight tolerances and many sliders required. Another factor is that in the West often only one worker is available to supervise 4 injection machines, which means that the molded parts need to be absolutely flawless.

To truly benefit from China's low labor cost the plastic parts need to be designed for China injection molding. In China it is normal to have 3/4 people sitting next to each plastic injection machine, taking out parts by hand and cutting off flares where necessary. We have had quite a few instances where the quality of our plastic parts made in China were actually better then the same ones from the US, because we could afford the labor to put a wood jig in every part to prevent warping. Secondary processes such as water-cooling, and spray painting are all much more affordable.
Runner can help you to optimize your plastic parts design for injection molding in China.

High precision molding in Taiwan
The low labor cost approach works for a lot of products, but for others, such as automotive parts, it is still imperative that the quality of every part coming out of the machine is impeccable and produced to exacting tolerances. In these cases Taiwan still has one of the world's best quality/cost performances, it is interesting to see that some of the world's leading car manufacturers are actually taking their tooling projects out of China and back to Taiwan because nobody in China is able to deliver the quality required.

Plastic Injection Ability
In Runner, the Injection & Molding Department currently covers a floor space of 3000m2 and over 200 dedicated staff. There are total of 54 sets of injection molding machines. Moreover, Runner has a central resin refill system from Germany, one acrylic handle molding workshop, 12 robot arm mechanisms and much more other related equipment. Runner is a modern, professional and industrially advanced manufacturing center, with a capacity of 250,000 pieces of molded parts per day.