ALPLA Videobot - Plastic production at ALPLA

At ALPA, we use three different techniques: extrusion blow molding, injection molding and injection blow molding. The extrusion blow molding process is used to manufacture bottles and packaging for cosmetics, personal care, household care, detergents, food, and oils and lubricants. A tubular preform is extruded and then moulded to the inner contours of a mould using pressure. ALPA primarily follows a two-step procedure to produce PET bottles. Firstly, preforms are produced which are then heated up in the separate stretch blow moulding machine and are simultaneously stretched and blown into a bottle shape in the mould with the aid of a stretching rod. Injection moulding is one of the principal procedures for producing moulded plastic parts. Here, plastic mass is injected into a mould and cooled. There is a virtually unlimited choice of shapes and surfaces available. ALPA uses this technology primarily to produce individual components and caps. Injection blow moulding is a process in which both the preform injection and the blow moulding of the product are performed one after the other on the same machine without using a stretching rod. ALPA uses this method at certain sites to produce smaller containers with high quality requirements out of PE and PP for cosmetics, personal care and pharma products.