Molded Pulp Egg Packaging with Ventilation Bridges and Porous Coating
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Solution Overview
Problem
Conventional molded pulp egg cartons are prone to moisture absorption, leading to structural degradation and inadequate protection of eggs, especially in refrigerated environments with varying temperature and humidity levels, and often open during automated packing operations, causing standstill and product loss.
Innovation Solution
A packaging unit with a bottom part and cover part hingedly connected, featuring ventilation bridges on the bottom surface to reduce moisture accumulation, and elevated locking elements for enhanced security and stability, allowing for improved airflow and secure locking, even under condensation conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If molded pulp packaging units are used for eggs, then they provide protective compartments, but they absorb moisture and lose structural strength in refrigerated environments
Solution Approach 1:
The packaging unit incorporates a porous coating layer applied to the inner surface of the bottom part and cover part. This porous layer allows vapor transmission while providing a hydrophobic barrier that prevents liquid moisture absorption, maintaining structural strength in refrigerated environments with varying humidity levels
Solution Approach 2:
The packaging unit combines molded pulp base material with a porous coating layer, creating a composite structure that leverages the protective properties of pulp while adding moisture-resistant properties through the coating, preventing structural degradation in refrigerated conditions
2Extent of automation
If conventional packaging units are used in automated packing, then packing operations can be robotized, but the packaging units open during packing causing standstill and product loss
Solution Approach 1:
The packaging unit incorporates a pre-applied porous coating layer that provides immediate moisture protection and structural stability before entering the automated packing process, preventing opening during robotized handling and packing operations
Solution Approach 2:
The porous coating modifies the surface properties of the packaging unit, changing its moisture absorption characteristics and structural integrity parameters to maintain stability under automated packing forces and prevent unintended opening
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 packaging unit effectively reduces moisture retention, enhances structural integrity, and minimizes product damage during refrigeration while ensuring secure automated packing operations by allowing airflow and providing improved locking security.
Implementation Method 1
a bottom end construction configured to allow for airflow and ventilation along the bottom surface of the bottom part
Data Source
AI summary
A packaging unit from a moulded pulp material and a manufacturing method therefor. The packaging unit comprises a bottom part with product receiving compartments and a number of cones that are provided between the compartments, a cover part, a hinge configured for hingedly connecting the bottom part with the cover part, and ventilation bridges formed into the bottom part between adjacent product receiving compartments. The ventilation bridges provide void spaces in a bottom surface of the bottom part and allow for the continuous flow of air through the bottom part of the packaging unit.