Continuous Extrusion for Consumer Packaging
In Europe, Kautex is regarded as the inventor of blow molding technology. The first machine for the production of plastic bottles was developed back in 1949.
In blow molding technology, continuous extrusion is the basic process for the production of blow molded articles from a parison. In this manufacturing process that is still used today, the extrusion speed depends on the screw r.p.m.
Characteristics for continuous extrusion:
Materials with high viscosity
High melt stiffness
Short, light parisons
Coextrusion, especially with thin layers
The coextrusion process has been offered by Kautex Maschinenbau since the early 1980s. It was developed to meet new requirements in agricultural chemicals packaging.
The term "coextrusion" stands for the simultaneous processing of diverse materials that are bonded in the extrusion head into a multi-layer parison by means of an adhesive promoter. For particularly challenging applications, Kautex Maschinenbau offers equipment for the production of up to seven layers.
Low requirements for master batches in the outer decorative layer reduce the costs of Deco/Reco produced parts and additionally allows regrind or recycled material to be embedded into the middle layer. This process, with the inclusion of a suitable barrier layer, can be used to protect food products from environmental influences and prevent chemicals from being discharged into the environment.