Packaging of flowable materials

摘要

The present invention relates to a process for sealing together opposing surfaces of flexible film, the flexible film comprising a sealing layer in a sealing region (90), whereby the sealing layer comprises a metallocene catalysed resin, the sealing step being characterised in that the sealing region (90) is at least partially covered with a flowable material (80) prior to and/ or during the sealing step, so that a leak-free seal is provided.