Integrally Formed Plastic Pallet Deck With Reinforced Sheets
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Solution Overview
Problem
Existing plastic pallets lack an improved construction with a unitary deck that provides enhanced durability, insect resistance, and ease of cleaning while minimizing material and cost, particularly in terms of fire retardancy and structural reinforcement.
Innovation Solution
A plastic pallet with an integrally formed injection molded deck, featuring reinforcement rods and sheets that are permanently or semi-permanently attached using welding, and incorporating fire retardant materials only in the top and bottom sheets to reduce costs and maintain necessary safety standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fire retardant materials are applied to the entire pallet structure, then fire resistance is improved, but material cost and processing complexity increase
Solution Approach 1:
Fire retardant materials are applied selectively only to the top and bottom sheets where fire resistance is most critical, rather than treating the entire pallet structure. This localized approach maintains necessary safety standards while reducing material costs and simplifying the treatment process.
2Ease of manufacture
If the deck is made as a separate assembly requiring fasteners, then manufacturing flexibility is improved, but structural integrity and durability decrease
Solution Approach 1:
The deck is formed as an integral, unitary structure where the top sheet, bottom sheet, and reinforcement members are permanently joined as a single assembly. This eliminates fasteners and joints that could fail, significantly improving structural integrity and durability while maintaining manufacturability through modular design.
3Strength
If reinforcement members are added to the deck, then structural strength is improved, but material cost and manufacturing complexity increase
Solution Approach 1:
Reinforcement members are permanently joined to the top and bottom sheets to form an integral deck assembly, providing enhanced structural strength. The reinforcement is strategically placed at key load-bearing locations rather than throughout the entire structure, optimizing strength while controlling material cost and manufacturing complexity.
Solution Approach 2:
The deck combines different materials (metal reinforcement members with plastic sheets) to achieve superior structural properties. This composite construction provides the strength and rigidity needed for heavy-duty applications while maintaining the corrosion resistance and ease of cleaning associated with plastic components.
4Reliability
If the deck is made as a single integral structure, then durability and insect resistance are improved, but manufacturing complexity increases
Solution Approach 1:
The top sheet, bottom sheet, and reinforcement members are permanently joined to form a single integral deck structure that eliminates joints and seams where insects could penetrate and where moisture could accumulate. This unitary construction significantly improves durability and insect resistance while being manufactured as a complete assembly in one molding process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution results in a durable, insect-resistant, and easily washable pallet with improved structural integrity and reduced material costs, as well as enhanced fire retardancy without treating the deck, ensuring compliance with NSF International standards and ease of use with electric pallet jacks.
Implementation Method 1
an integrally formed injection molded deck
Implementation Method 2
molten plastic material into a mold cavity under pressure, then cooling to solidify the structure
Implementation Method 3
reinforcement rods and sheets that are permanently or semi-permanently attached using welding
Data Source
AI summary
A reinforced plastic pallet includes an integrally formed deck having a top deck surface, a bottom deck surface, and a plurality of spaced apart supports extending between the top deck surface and the bottom deck surface. The top deck surface has a plurality of outwardly extending top ribs extending from the top deck surface and the bottom deck surface has a plurality of outwardly extending bottom ribs extending from the bottom deck surface. A top sheet is coupled to the top deck surface to fully enclose the top ribs between the top sheet and the top deck surface. A bottom sheet is coupled to the bottom deck surface and encloses the bottom ribs between the bottom sheet and the bottom deck surface. The pallet may include optional reinforcement rods fully contained within channels formed in the ribs.