There are many types of Bottle Capping Machines available that can seal different types or caps. These include automatic capping machines, chuck cappers and spindle cappers.
Screw-on caps that attach to bottles to secure them are the most common type of cap for bottled waters, soft drinks, teas, or sports beverages. These closures are easy to change over for each project and are typically cost-effective as well.
Chuck cappers use accessories which help to grip and tighten caps to create secure closures. These machines can also be used in small or large production lines. They can be fully automated or semi-automatic.
Most chuck-capping machines can be combined with power conveyors and cap delivery devices to attach caps to the bottle while it is moving down the line. These cap-capping machines come in many sizes to suit your production environment.
In-line caps have a smaller footprint that rotary cappers and can be mounted over existing bottle conveyors to help save space and money. They are also easier to use as they can seal a wide variety bottle and closure sizes.
They are equipped with side gripping belts that grip the outer edges of the bottle as it passes down the conveyor. The belts are speed-matched to the conveyor to avoid tipping or jerking the bottle as it is tightened, and they can be doubled to add extra stability for tall or oddly shaped bottles.
Because the chuck-style capper can hold tamper evident (TE) caps more effectively than an in-line machine, the TE cap can be positively held in place by the jaws. This ensures that the closure will be applied squarely onto the neck finish of the bottle and can avoid cocked caps, which can occur when bottles are directly picked off a TE cap by an in-line machine.
The special capping head on the chuck capper delivers a downward force or top load to the closure when it is being tightened. This forces the TEband over the thread finish of neck finish and helps to properly connect the threads on the closure with those of the neck.
This is an important consideration in avoiding cocked bottles. The TE band can interfere with the threads of the neck finish of a bottle and direct pick-off could cause it sit crooked on its neck finish.
These capping machines can be very effective for many applications, but they require a lot of training and attention to ensure that the proper amount of torque is being applied to the cap. This is especially true when tightening caps that have higher torque requirements than the average, and they can be a challenge to operate for new operators.
Most chuck capping machines use starwheel indexing to stabilize the bottle during the tightening process. These indexing wheel are cut to a particular number of points. The stopping point is programmed to halt the bottle beneath one or more chuck heads. The chuckhead will descend, applying the torque required for the bottle to be securely capped before it is released from the power conveyor.