RM100 Automatic Capping Machine ROPP Cap Screwing Machine Metal Bottle Cap Screw Capping Machine for Olive Oil and Wine

Olive oil, vinegar, syrup, and specialty sauces are often bottled in glass with aluminum ROPP closures. These products need a seal that prevents leakage, protects against oxidation, and provides visible tamper evidence. The RM100 automatic ROPP capping machine forms the aluminum cap onto the bottle neck, creating a tight thread and a tucked pilfer band without requiring a pre-threaded cap . It is suitable for food-grade glass bottles within its 60–400 mm height and 50–150 mm diameter range.

Olive oil is sensitive to oxygen and light. A well-formed ROPP closure with a compatible liner helps limit oxygen ingress at the bottle mouth, while the aluminum shell provides a barrier against light at the closure. The ROPP format also gives the consumer a resealable bottle: the thread remains on the glass after first opening, so the cap can be screwed back on. For producers selling into retail and export markets, the integrated tamper band provides visible evidence of first opening.

Food-grade ROPP capping still depends on mechanical fit. The bottle finish must match the cap dimensions, and the liner must be compatible with the product. Oil residue on the bottle mouth can interfere with sealing, so filling accuracy and bottle-mouth cleanliness should be controlled. The RM100’s cap path is custom-built to the cap diameter and thickness, and the capping head uses adjustable knives to set height and tightness.

Leak complaints in ROPP packaging often trace back to a mismatch between cap, bottle finish, liner, and application settings . The RM100’s servo torque control allows repeatable forming pressure, which helps maintain a consistent seal across a production run. However, torque alone is not sufficient: roller condition, bottle support, and cap centering also affect the final result. A first-article leak test should be part of the changeover procedure.

The RM100 runs at up to 42 bottles/min. For a small olive oil producer running a single filling line, a 4-head or 6-head configuration may be sufficient. For a larger contract packer or a multi-product food line, a 10-head machine can support higher throughput. The capping station should be sized to exceed the filler output so that capping does not become the line constraint.

The RM100 can be connected to existing conveyors and inline filling equipment. It automatically feeds caps, places them on the bottle, forms the ROPP closure, and transfers the bottle to labeling or packing. A cap elevator or vibrating disk can be specified to match the cap supply format. The electrical cabinet uses a 304 stainless steel fully sealed structure to resist dust and moisture in food production environments.