Packet has base and sides divided by ridged lines, and stuck together, with fixtures and fastening fields, and lugs

摘要

The packet (31) has a rectangular base (2) to which sides (3-6) are linked, Two facing sides each have two fastening fields partly stuck and diagonally folded to an adjacent side field. Fixtures securing the sides consist of lugs (23-36) gripping over the side fields. Fastening fields in the two outer corners have cavities with lugs. The adjacent side fields stuck to the fastening fields have matching recesses. The side fields stuck to the fastening fields are linked by ridged lines to the base.