Hi Egenalo
Are you trying to keep it rigid, with less acute curves so as not to crease the canvas whilst rolling? If I’m I’m seeing this correctly, I would prep a small tube lined in tyvek or poly and then roll it in tyvek as it would prove to be more reusable than rippy tearie old glassine. Then finish it off with a reusable custom exterior box. Either card or even better foamcor.