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ROPP Capper - Roll-On Bottle Capping Machines

ROPP Capper - Roll-On Bottle Capping Machines The ROPP Capper is fast and effective to ensure your products are tightly sealed. Fowler MP4 http://www.viddler.com/file/65a697a1/html5

The machine shown in this video is a Fowler/Zalkin rotary capping machine equipped for the application of 30x44mm, roll-on aluminum closures.  This particular machine is an 8 head capper suitable for speeds up to 320 BPM, but rotary machines are available is sizes ranging from 3 to 36 heads, yielding operating speeds from 120 to 1200 BPM.  To illustrate the operating principles of this roll-on capping machine, strings of 10 bottles each, will be run through the capper while we focus on several critical elements of the machine responsible for the proper application of the cap. Oriented caps flow by gravity down a chute that has a cap dispenser mounted at its end.  The dispenser is located directly over the path of the bottles traveling through the infeed starwheel.  Bottles must be supported at their necks by the starwheel as they pick-off a cap from the spring loaded fingers of the dispenser.

The bottles which now have a cap are transferred to the turret starwheel where the rotating sealing heads descend onto them and begin the cap application process. The sealing head will first apply a top load to the closure to compress the liner within the cap to achieve a proper seal with the land of the bottle finish.  The arms of the sealing head are then pushed inward and the thread rollers and pilfer rollers contact the cap to form it, so that it adopts the shape of the thread and pilfer grove of the neck finish of the bottle.

This forming of the cap can be better viewed on a single head capper where the bottles remain still.  Here we can view the rotating head descend onto the bottle and see the rollers form the sidewalls of the cap to create both the thread and pilfer tuck in the closure.  The cap begins as a straight walled aluminum shell.  There are no threads present in the closure.  As the thread rollers and pilfer rollers contact the skirt of the cap, they shape it so that the aluminum conforms to the pattern of the thread and pilfer grove that is present on the bottle finish underneath.

This final view of the machine brings all of these actions together to illustrate the proper application of a roll-on aluminum closure.  Bottles entering the machine, first pick-up a cap from the dispenser and then travel under the sealing heads where the roll-on application of the cap takes place.  Capped bottles exit the machine via the discharge starwheel and travel down the conveyor to the next packaging operation of the bottling line.

Click for more information on our roll-on bottle cappers.