Reobijn: 2K injection moulding One of our specialties is a technique called 2K injection moulding, where we process two different materials in a single injection moulding process into one end product. This makes it possible to mould sealing parts or company logos, manufacture products in various colour combinations, or to make multi-layered products. Probably the most appealing product that we make using this 2K technique, is the cap of the famous Grolsch swing-top bottle; previously of porcelain, now of plastic. Moreover, the 2K moulding technique offers aesthetic advantages and greater freedom in terms of product shape.