This process continued sequentially until a total of 5 alternating compositions had been deposited on the spool.
The cardboard spools with the layered composites on their outside were wrapped with PTFE release film and compression moulded at 150 C (below the melt point of PLLA, yet well above the Tg of PDLLA) with a force of 15 kN for 5 min, this resulted in the tubular spool being squashed flat