Our patented co-extrusion process consists of two stages.
First, raw materials are mixed, melted, and extruded to create a long, foamed cylinder, forming the closure’s core. Then a second extrusion process applies a flexible outer skin, which is thermally bonded to the inner cylinder.
The shape is stabilized in cooling water before our high-speed cutting operation cuts the closures to the proper length. Our technology is a continuous process which ensures complete bottle-to-bottle consistency and performance.