Compostable Dental Examination Tray With Fiber Composite Strength
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Solution Overview
Problem
Disposable plastic examination trays for dentists are highly polluting due to their non-recyclable nature and single-use requirement, leading to significant environmental waste and CO2 emissions.
Innovation Solution
A compostable examination tray made from a mixture of sugarcane fiber and bamboo fiber, designed with compartments and anti-slip features, allowing for separation and secure storage of medical instruments, and featuring a stackable design for reduced space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If disposable plastic trays are used, then convenience and sterility are improved, but environmental pollution and CO2 emissions worsen
Solution Approach 1:
The patent changes the material parameter from conventional plastic to a composite of natural fibers (bagasse, bamboo, hemp) and biodegradable polymers (PLA, PHA). This material substitution maintains the disposable nature and sterility requirements while enabling biodegradation, thus resolving the contradiction between convenience and environmental harm.
Solution Approach 2:
The tray employs a composite material structure combining multiple natural fibers (bagasse, bamboo, hemp) with biodegradable polymers. This composite approach enhances mechanical strength and functional properties while preserving biodegradability, allowing the tray to meet both operational convenience and environmental sustainability requirements.
2Strength
If conventional plastic trays are used, then structural strength is maintained, but biodegradability is lost
Solution Approach 1:
The patent uses a composite formulation combining natural fibers (bagasse, bamboo, hemp) with biodegradable polymers (PLA, PHA). The fiber-reinforced composite structure provides the necessary mechanical strength while the biodegradable polymer matrix ensures controlled degradation, resolving the contradiction between strength and biodegradability.
Solution Approach 2:
The tray incorporates different natural fibers with complementary properties: bagasse provides structural framework, bamboo adds tensile strength, and hemp enhances rigidity. This local quality differentiation within the composite allows optimization of both strength and biodegradation characteristics in different regions of the material.
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 tray minimizes environmental impact by being biodegradable, reduces CO2 emissions by 63% compared to plastic trays, and provides convenient, economical, and practical use for dentists while accommodating a variety of instruments effectively.
Implementation Method 1
bagasse and bamboo fiber decompose naturally much faster than the plastic used in conventional trays
Data Source
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AI summary
The present invention relates to a disposable examination tray (1) for the medical field, in particular for the dental field, comprising two opposing main faces (10, 11), namely an upper face (10) and an lower face (11), said tray being monobloc and having a relief, formed in one of the main faces (10; 11) and delimiting receiving compartments (12, 120, 121, 122), said receiving compartments (12, 120, 121, 122) being configured to receive medical instruments; said tray (1) being formed of sugar cane fiber and bamboo fiber and being configured to be compostable.