Bottle Filling Line Explained: Filling, Capping, Labelling and Coding

A bottle filling line takes empty bottles and turns them into finished, labelled, coded product ready to ship. Whether you run water, sauces, cosmetics or chemicals, the line follows the same stages. This guide explains each one and the machine that does it.

Stages of a bottle filling line

• 1. Unscrambling and feeding: a bottle unscrambler orients and feeds empty bottles into the line.
• 2. Filling: a liquid filling machine doses a measured volume into each bottle, using overflow, piston, gravity or pump filling depending on viscosity.
• 3. Capping: a capping machine applies and torques caps for a secure, leak-free seal.
• 4. Labelling: a labelling machine applies front, back, wrap-around or shrink-sleeve labels.
• 5. Coding: a continuous inkjet or laser coder prints date, batch and barcode.

Matching the filler to your liquid

Viscosity drives the choice: thin liquids suit overflow or gravity fillers, medium liquids suit piston fillers, and thick or particulate products suit pump fillers. See our guide on how to choose a liquid filling machine.

Automatic vs semi-automatic bottling

Low volumes can run semi-automatic, with the operator handling bottles between stages. Higher volumes justify a fully automatic inline or rotary line, where bottles flow continuously from unscrambler to coder.

Frequently asked questions

What order do bottle filling line stages go in?

Unscramble, fill, cap, label, then code. Coding sometimes happens before labelling, depending on where the code is printed.

Can one supplier provide the whole line?

Yes. Nexus Australia supplies filling, capping, labelling, coding and bottle handling, so the stages are matched and supported together.

What is the most important stage to get right?

Filling accuracy and capping integrity have the biggest impact on product quality and giveaway, so they are worth specifying carefully.

Talk to Nexus Australia about building or upgrading your bottle filling line.