Automatic ROPP Capping Machine

Automatic ROPP Capping Machine

Many customers ask us what ROPP is and the simple answer is Roll On Pilfer Proof closure. Simply put it is an unthreaded aluminum shell that is placed on and pressed down onto the bottle neck while thread forming wheels spin around the shell and press against it to conform to the existing threads of the bottle and locking ring. In many respects a ROPP capper resembles a chuck capper although since it is not torquing a cap there is no clutch mechanism required. ROPP capping machines are available as a single head to multiple head high speed rotary systems. The big advantage of a ROPP capper machine is that it is sealing the product at the same time it is providing tamper evident security. The big disadvantage is that it is expensive to run more than one size cap. The neck and threads of the bottle must also be hard enough to withstand the pressure required to form threads such as glass or hard plastic.

The automatic aluminum ROPP capping machine uses the automatic aluminum cap feeding and capping machine for the high-speed production line. It adopts the servo motor driven aluminum cap feeding and capping machine to sort, feed and locate caps with stable torque by one machine. It simplifies the arrangement of the production site. Rotary disks introduce bottles to the aluminum capping machine before locating and capping.

High efficient fast automatic aluminum ROPP capping machine

The aluminum ROPP capping applicators’ torque can be set up on demand and it does not overtighten. The parameter automated settings allow to enter torque values without manual adjustments. It fits for screw caps and aluminum caps and can work for glass and metal bottles without being restricted by materials. The sizes of the aluminum cap are numerous for choices. The advanced pre-check system actively detects and removes screw threads mismatching to make sure the capping operation is perfect. Automatic aluminum cap feeding and ROPP capping machines fit in the industry of beverage, pharmacy, chemical engineering, cosmetics and household supply to produce with aluminum capping and packaging. It has an accurate linear cutting cap screw system, combined with capping and labeling machines, to precisely cap the products as a middle and big size high efficient fast filling and capping production line.

Roll-on-pilfer-proof (ROPP) caps are made from aluminium. The thread is formed by the capping head as the cap is applied to the bottle. Small metal discs on the rotating capping head follow the thread on the bottle forming a thread on the aluminium cap and tucking under the tamper evident ring. Capping heads are available to suit a wide range of cap sizes and are usually made specific to each size of cap. Capping heads are interchangeable allowing you to run different sizes of cap with the same machine. Available in both electric and pneumatic versions. Suitable for a wide range of cap and bottle sizes from 18mm diameter up to 38mm diameter. Typical bottle sizes of 50ml to 1000ml are handled as standard and bottles as small as 10ml can be handled by using pucks to hold the bottle during capping.

Production capacity 2000 bph 5000 bph 7000-8000 bph
Diameter of bottle φ50-φ100 φ50-φ100 φ50-φ100
Height of bottle 150-320 mm 150-320 mm 150-320 mm
Power 0.75KW 1.2KW 2KW
Overall dimensions 900*700*1800 mm 1200*1000*1800 mm 1500*1200*1900 mm
Weight 350 Kg 500 Kg 750Kg

1.The automatic capping machine is designed for closing various types of containers (made of plastic, glass and metal) with aluminum caps. The machine is especially suitable for use in the food-processing, cosmetic and chemical industries.

2.The machine can be equipped with different types of cap unscrambler (vibrating, rotary, belt type) depending on the type and size of the cap. For feeding the caps into the cap unscrambler the caps hopper is available.

3.For placing difficult caps onto the container neck the "Pick and Place" system can be used.

4.Working Function:The containers are transferred to the star wheel by means of the conveyor. The star wheel (indexing type for one-head capper or continuous motion for multiple-head capper) takes the containers and carries them to the caps placing station and than to the closing head. The closing head tightens the cap with the necessary torque (if the head is of the pressure type, it will press the cap on the bottle neck by means of a spring unit). The torque can be set on the closing head by means of magnetic clutch. After completion of the closing process, the star wheel moves the container to next station for press the black small cap, after that the star wheel moves the container to the finish products conveyor.