Consolidate all Packing Lists under a delivery note

We have to print packing list for exporting items out of country. For this we need to print a document called Packing List. WE have to declare no. of items and package (box) details along with box sizes in that document. Can someone please help out how to make that ?

Since we have created packing slips under that sales invoice / delivery note, the better idea is to consolidate all packing slips (with details of packages and items in that) under that delivery note / sales invoice on one prinf format.

Any suggestions will be helpful for R&D and Erpnext community.