Who would have thought that the "sandwich" concept from the food industry could now be applied to plastic parts as well?

Take a look at these finished products with distinct green and pink layers — the outer layer is made of virgin materials while the inner layer is filled with recycled materials. Yet they achieve a seamless finish and one-step molding! This is by no means manual assembly; it all relies on the genuine sandwich injection molding technology of the Dual-Color Hybrid Injection Molding Machines from the Chameleon Series by Ningbo Konger Machinery: the dual-barrel system enables precise material control, allowing one type of material to firmly encase the other, eliminating the need for secondary processing after molding.

Filling the inner layer with recycled materials not only ensures the product’s appearance and structural strength, but also directly cuts down on raw material costs significantly. Moreover, the "one-step molding" process eliminates intermediate procedures entirely, maximizing production efficiency while reducing labor requirements.

Whether for packaging components, daily necessities or industrial parts, this solution that saves costs on the inside while ensuring quality on the outside directly addresses the core pain points of production.

Want your injection-molded products to be both cost-effective and high-end? The sandwich molding technology of Konger’s dual-color hybrid injection molding machines might just be the answer you’re looking for!

Please note: The items shown in the images are not food products!