Load Type Selection for Case Packers

Case packers can broadly be categorized into four types by load orientation: horizontal load, top load, bottom load or drop load. Each one of these has a unique set of advantages, and is often the first decision point in determining which case packer will best suit your application.

Of course, within these types, there are endless options and variations that will ultimately define the machine; however, it's important to start with the most fundamental aspects of the machine.

Horizontal (End) Load

Horizontal load case packers are appropriate with products that can be manipulated and collated in several directions, and can be used with most case types.

Advantages of horizontal load case packers include:

• Generally small footprint monobloc frames

• High speeds are achievable with a monobloc machine

• Use of loading funnels can achieve tightly packed cases

• Can be very cost effective for the throughput capability

• Change over time and tooling cost can be quite low

Disadvantages can include:

• Cases will generally need to be rotated at the discharge, the product must be capable of withstanding multiple orientations during the packing process. This limits the types of products that can be used

• Generally not suitable to complex packaging including partitions, slip sheets or other material

Top Load

Whereas horizontal loading takes place with a series of pushing product, top loading will pick and place product. This makes it suitable for products such as bottles, bags and pouches.

Some other advantages include:

• Ability to include partitions & slip sheets

• Maintaining product and case orientation through the process

• Changeover flexibility by changing the gantry or robot tool

• Compact footprints are available, especially at lower speeds

Disadvantages include:

• Higher speeds may require the need for separate machines for forming, loading and sealing

• The cost for different end of arm tooling could be high if there is a wide variety of products

Bottom Load

Bottom load case packers are similar characteristics to top load packers; however, are more suitable to heavier or uniquely shaped products that cannot be reliably be lifted from the top. Bottom load case packers have very gentle handling characteristics and are suitable for products such as jugs, gable-top cartons and products with shrink wrap or transparent film on top.

Drop Load

Drop Load case packers can be suitable for products not requiring special handling or tight loading requirements, such as pillow packs. Drop load packers offer advantages in speed, simplicity and cost; however, in many applications top load case packers with robotics are preferred do to their precision and flexibility.

Case packer load types conclusion

Each load type has it's own set of advantages, and the ideal case packer for your application will come down to a variety of factors. While this post helps highlight some of the key differences, they best way to ensure that you find the right equipment for your operation is to connect with a case packing specialist.