Sterile Packaging Cellular Plastic Perforated Gas Exchange
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Solution Overview
Problem
Existing packaging solutions for sterile products, such as medical instruments, do not effectively ensure complete gas exchange during sterilization while preventing dust contamination, which is crucial for safety and efficacy.
Innovation Solution
A tray and cover made of cellular plastics material with perforated internal sheets and strategically placed cut-outs allow gas circulation while preventing dust passage, featuring double-layered sidewalls and flaps for structural integrity and efficient ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cover sheets are perforated to allow gas circulation during sterilization, then gas exchange is improved, but dust contamination risk increases
Solution Approach 1:
The cover sheets are perforated with multiple holes to create a porous structure that allows sterilization gas to pass through while the spacer walls provide additional filtration. This porous design enables gas exchange while preventing dust particles from entering the sterile package.
2Reliability
If wide cut-outs are provided along fold lines to ensure cell communication with exterior, then gas circulation is improved, but structural integrity deteriorates
Solution Approach 1:
The side walls are divided into multiple longitudinal elements separated by transverse partitions. This segmentation allows gas to circulate through the cells formed by these elements while the partitions maintain structural integrity. The double-layered construction with inner and outer walls further reinforces the structure while enabling gas flow.
Solution Approach 2:
The packaging uses a composite structure combining cellular plastics material with a double-layered wall design. The inner and outer walls work together to provide both structural strength and gas circulation pathways through the cellular structure.
3Strength
If double-layered sidewalls are formed by folding panels, then structural integrity is improved, but device complexity increases
Solution Approach 1:
The packaging combines multiple functions into a single integrated structure. The double-layered side walls simultaneously provide structural strength, create cellular compartments for gas circulation, and form the overall box shape. The fold lines and partitions are integrated into the same plate structure.
Solution Approach 2:
The cellular plate structure serves multiple purposes: it provides the rigid framework of the box, creates the double-layered walls for strength, forms the cellular compartments for gas circulation, and defines the overall geometry of the packaging.
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
Ensures thorough gas exchange during sterilization while maintaining structural integrity and preventing dust contamination, ensuring safe and effective packaging for sterile products.
Implementation Method 1
the perforations allowing the passage of the gas but preventing the passage of dust
Implementation Method 2
Plates of cellular plastics material are readily used for making the packaging boxes... the sheets and partitions provide longitudinal channels between them, which are called cells in the field
Data Source
AI summary
A packaging for sterile products, comprising a tray and a hood made from cellular plastic material comprising at least two covering sheets held at a distance from one another by a plurality of spacers having cells longitudinally parallel to each other, the tray and the hood comprising a base and sidewalls cut from a plate of said material and with at least one of said sidewalls having double thickness and being formed by folding two panels of the plate around the folding lines perpendicular to the direction of said spacers. The interior covering sheets are perforated to allow the passage of a sterilizing gas through said covering sheet, the perforations allowing the passage of the gas but preventing the passage of dust, wide cut-outs traversing at least the other covering sheet of the plate in order to ensure communication of said cells with the outside and being provided along the folding lines of said panels.