The keywords focus on the manufacturing of water-soluble products in both fibrous and non-fibrous forms. The core technical challenge is ensuring uniform dissolution and structural integrity across different material morphologies during high-speed production.

Variability in the manufacturing of dissolvable sheets leads to poor solubility or incomplete release of active ingredients. Ensuring uniform dissolution rates across mass-produced units prevents residue and improves cleaning efficacy.

The keywords indicate a focus on multi-ply and fibrous water-soluble structures, which are prone to delamination or premature dissolution during high-speed manufacturing. Ensuring these layers remain intact and functional during the unit dose assembly process is the primary technical hurdle.