Lesson 13: Unit Load Material Handling Interactions Part A

What is the worst-case scenario for pallet design?

Uniformly Distributed Flexible Load (UDFL) leads to pallet overdesign.

What factors affect the strength of packages in unit load material handling?

Effective Bearing Area, Pallet Stiffness, Load Bridging, Interfacial Friction, and Load Stability.

What is the impact of pallet stiffness on corrugated box strength?

Pallet stiffness affects the strength of corrugated boxes, influencing load distribution and stability.

What is load bridging in the context of pallet design?

Load bridging refers to the redistribution of stresses from the pallet to the support due to the stiffness of the load.

How does interlock stacking affect load bridging?

Interlock stacking increases stability and reduces deflection by distributing pressure differently.

What is the effect of stretch wrap on load bridging?

Stretch wrap can decrease deflection by up to 81% and affects load bridging by increasing containment force.

What parameters of boxes affect pallet bending?

Coefficient of Friction, box height, number of layers, amount of containment, and stacking pattern.

What is the minimum recommended coefficient of friction (CoF) for pallets?

The minimum recommended CoF for pallets is 0.30.

How can load bridging be increased in pallet design?

By using interlock stacking patterns, increasing packaging size, and utilizing break-away adhesive between layers.

What is the significance of the coefficient of friction (CoF) in unit load handling?

CoF is crucial for stabilizing unit loads during storage and shipping, affecting load slip and stability.

What is the relationship between static coefficient of friction and load securement?

The static coefficient of friction determines the bulkhead requirement to resist a given load during transport.

What are the major unit load interactions to remember?

Vibration, pallet stiffness effects, load bridging, compression stress distribution, and friction on stability.

What does the PDS software do in pallet design?

PDS helps in modeling unit loads and assessing the impact of various factors on pallet performance.

What is the effect of box size on deflection in pallet design?

Decreasing box size generally decreases deflection in all cases.

What is the impact of load distribution on pallet design?

Load distribution affects the bending stress on the pallet and overall stability.

What is the role of effective bearing area in package strength?

Effective Bearing Area influences the strength and stability of packages during handling.

How does the stacking pattern of boxes influence load stability?

Different stacking patterns can either enhance or reduce load stability and bridging.

What is the effect of plastic pails on pallet design?

Plastic pails can be designed to optimize load capacity and stability based on their arrangement.

What is the relationship between load bridging and pallet costs?

Increasing load bridging can help reduce pallet costs by optimizing load distribution.

What is the significance of compression stress distribution in pallet design?

Compression stress distribution affects how loads are supported and transferred through the pallet.

What does the term 'discrete loading' refer to in pallet design?

Discrete loading refers to the specific arrangement of loads on a pallet, affecting stability.

How does the coefficient of friction between pallets and packaging affect handling?

It influences the stability and movement of loads during transport and storage.

What is the impact of load bridging on pallet capacity?

Load bridging can enhance the load capacity of the pallet by redistributing stress.

What is the effect of airbag loading methods on pallet design?

Airbag loading methods can influence the distribution of weight and stability of the load.

What is the significance of the 'Best Load' software in pallet design?

It helps in optimizing pallet configurations for specific loads to improve performance.

Difference of 50-60% in deflection

when comparing to uniformly distributed load to a unit load