I think you're still in XY territory, but much better. Props for understanding that too.

Why a viscous liquid? In order for a liquid to stay where you want it to, it will either need a catalyst to harden, or go through a phase change, which complicates the whole process. What is preventing this hardening in the tank/extruder?

Does the end product require this particular material? Are there other materials, that while maybe not as ideally suited as your the liquid, that will simplify the production process, lower costs, and work almost as well by staying within tolerances/specs? If so, then you might want to look in that direction.

If not, well, we should be able to help you figure out what you need. But I'm thinking we'll need some more info on exactly this material is, and the conditions it must endure for production.