Rotary Tub Filling Machine

The Nexus Australia rotary tub filling machine fills, seals and caps tubs, cups and trays on one rotating platform. Also called a rotary filling and capping machine, a rotary filling system or an automatic filling machine for tubs, it runs liquids, powders and granules at 15 to 20 tubs per minute, with each station built to the product and container. Supplied and supported Australia-wide.

How it works

Empty tubs are stacked in a denester. The rotary table indexes each tub through a ring of stations: denesting drops one tub into a carrier, the filling station doses the product, the sealing station applies a heat-seal film or induction seal, the capping station presses or screws on the lid, and the ejection station pushes the finished tub onto the outfeed conveyor. Because every step happens on the same table, the footprint is small and the line needs one operator to keep the denester and film loaded.

The five standard stations

• Tub denesting: separates tubs, cups or containers from the stack and places them in the carrier.
• Piston filling: a piston filler doses to an accuracy of plus or minus 1 percent. Auger dosing is fitted for powders and a cup or weigher for granules, so the same machine is a dip filling machine, a yoghurt filler or a spice filler depending on the head.
• Tub sealing: heat-sealable film lidding or induction sealing for a tamper-evident, leak-proof seal.
• Tub capping: press-on or screw-on lids applied over the seal.
• Ejecting: filled, sealed and lidded tubs move to the outfeed for labelling, coding and packing.

Products it can fill

Dips, hummus and spreads; yoghurt, desserts and dairy; sauces, dressings and condiments; ready meals; spices and seasoning powders; protein and supplement powders; nuts, seeds and granola; cosmetic creams and balms; chemical and cleaning pastes. The dosing head is selected to the product, and multiple heads can fill two products into one tub for layered or twin-compartment packs.

Containers

Round and square tubs, cups, trays and pots in PP, PET and paperboard, from single-serve 100 g portions up to 2 kg catering tubs. Change parts for a new tub size are swapped in minutes.

Why choose a rotary system

• Full customisation: each station is built to the client's product, tub and lid, and stations can be added for nitrogen flushing, printing or a second fill.
• Precision: piston filling to plus or minus 1 percent keeps fill weights inside spec and cuts giveaway.
• Compact footprint: filling, sealing and capping on one table, which matters in clean rooms and small food factories.
• Bottle filling and sealing in one machine: the same layout runs wide-mouth jars and bottles that take a seal and a cap, so one machine covers a bottle filling and sealing job as well as tubs.

Rotary versus in-line filling

An in-line filler carries containers along a straight conveyor past separate filling, sealing and capping machines, which suits high speeds and bottles. A rotary system suits tubs and cups, where the container has to be held in a carrier for sealing, and where floor space is short. For bottles at higher speeds, see the liquid filling machine and the capping machine range. The rotary tub filling machine page shows a recent Nexus build.

Output

15 to 20 tubs per minute as standard, depending on product, fill volume and seal time. Additional filling heads lift the rate for small tubs.

See the full filling machine range, or send us your tub, lid and product and we will lay out the stations. Contact Nexus Australia for a quote on a rotary tub filling machine.