A case is erected (usually in a separate machine), and the bottom flaps are sealed.
Bottles are collated, then dropped into the case. The case exits the packer into
a separate case sealer, where the top flaps are closed. As you might expect, there
can be issues with bottle breakage, especially with thinner glass. A separate case
sealer (and often case erector) is required, taking up valuable floor space.
The case is formed around the bottles as they flow through the packer. They are usually
quite large machines that are best suited for dedicated product lines.
Pick & place packers
Similar to a drop packer, but the bottles are gripped by a robotic head, and lowered
into the erected case. To achieve the desired speeds, multiple heads are used to
load two or more cases at a time. A separate case erector and case sealer is usually
required. Change parts can be expensive.
At Hamson, we believe it makes more sense to move the case rather than the product
during the packing sequence. The case is pulled down (with mechanical grippers on
the bottom major flaps) over the bottles, with the necks of the bottles providing
a lead-in. This allows for tight packs, often eliminating the need for divisions.
The Hamson is totally self contained, with an integral case erector and sealer, making
for a very compact machine - about 1 metre wide by 4 metres long.
Labor reduction is usually the primary justification for going to automated case
packing; however, there are other factors beyond the simple return-on-investment
Ergonomics. Lifting bottles into a case all day is not a fun job, and it often
leads to repetitive stress injuries and compensation claims.
Floor space. Automation often progresses in stages - add a case erector, then a
case sealer, then a case loader. You end up with three machines to handle the case
packing, losing valuable floor space.
Future up-line upgrades. It may make sense to install a case packer that will handle
future upgrades to the filler and labeller.
The Hamson Overpacker ST is best suited for packing bottles or cans, at speeds of
up to 20 - 25 cases per minute. In this market, there are several competing options,