A coextruded polyethylene blown film, particularly for packaging, has a thickness between 20 μm and 250 μm and is formed by a foamed, particle-containing core layer between a first unfoamed weldable outer layer and a second unfoamed outer layer. The core layer has a polyethylene or a polyethylene-based mixture as a polymer component having a melt mass-flow rate (MFR) per DIN ISO EN 1133 of greater than 5 g/10 min at 190° C. and 2.16 kg.