Bakery Tray Lip Reinforcement for Stacking Strength
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Solution Overview
Problem
Existing molded plastic trays for baked goods are prone to breakage, especially when supporting hot items, due to susceptibility in interlocking projections and reduced strength from shorter front and rear walls, and pose challenges during blind stacking.
Innovation Solution
The tray design features a base with opposed side walls having outer and inner rails, recesses, and feet that adjust stacking height, a shorter front wall with a projecting lip for reinforcement, and angled ribs for structural integrity, along with features to prevent cross-stacking and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the trays are designed with shorter front and rear walls to provide access to baked goods, then the ease of operation is improved, but the strength of the tray deteriorates
Solution Approach 1:
The patent applies local quality by adding a lip structure specifically at the front wall's upper edge, rather than making the entire front wall taller. This localized reinforcement provides the necessary strength at the critical access point while maintaining the shorter overall front wall design for ease of operation.
2Stability of the object's composition
If the trays are designed with interlocking projections for stacking, then the stability of stacking is improved, but the reliability deteriorates due to susceptibility to breakage
Solution Approach 1:
The lip is positioned at the critical upper edge of the front wall where interlocking occurs, providing localized reinforcement exactly where breakage susceptibility is highest, without adding unnecessary weight or complexity elsewhere in the tray structure.
Solution Approach 2:
The lip structure acts as a preventive reinforcement element that is built into the tray before stacking occurs. It provides structural cushioning and protection against the breakage that would otherwise occur during the stacking operation, addressing the reliability issue before it manifests.
3Productivity
If the trays are stacked higher than the person stacking them for efficient space utilization, then the productivity is improved, but the ease of operation deteriorates due to blind stacking
Solution Approach 1:
While not explicitly using color, the patent employs visual feedback through the lip structure's position and the interlocking mechanism's tactile feedback, allowing the worker to visually and physically confirm proper tray placement and interlocking engagement during blind stacking operations.
Solution Approach 2:
The interlocking mechanism with the lip provides tactile and visual feedback to the worker during stacking. The click or engagement sensation confirms proper placement, enabling blind stacking to proceed with confidence and reducing the difficulty of operating at elevated stack heights.
Data Source
AI summary
A tray includes a base having opposed front and rear walls and opposed side walls. The front and rear walls are shorter to provide access to products stored on the tray when in a stacked configuration. The tray includes reinforced intersections between the front and rear walls and side walls.