Molded Fiber Tray Barrier Layer for Moisture-Resistant Packaging
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Solution Overview
Problem
The challenge lies in developing sustainable and environmentally friendly packaging alternatives to replace materials like polystyrene and PET, which are environmentally unfriendly, while ensuring effective containment and protection of contents from moisture and other external factors.
Innovation Solution
Molded fiber trays made from sustainable materials, featuring integrated or laminated barrier layers that are chemically inert and impervious to contents, along with geometric patterns for structural reinforcement, to prevent moisture absorption and maintain content integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If molded fiber trays are made from sustainable materials like molded pulp or fiber, then environmental friendliness is improved, but moisture resistance and chemical inertness deteriorate
Solution Approach 1:
The patent applies composite materials by combining molded fiber base material with a barrier layer coating. The molded fiber tray provides structural integrity and sustainability, while the barrier layer coating adds moisture resistance and chemical inertness. This composite structure resolves the contradiction by integrating two materials with complementary properties.
Solution Approach 2:
The barrier layer acts as an intermediary between the molded fiber tray and the contents. It mediates the interaction by providing a chemically inert surface that prevents direct contact between the fiber material and contents, thereby ensuring moisture resistance and chemical stability while maintaining the sustainability benefits of the fiber base.
2Duration of action of stationary object
If molded fiber trays are made from sustainable materials, then biodegradability is improved, but structural integrity under load deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the tray into a base structure and a separate barrier layer coating. The molded fiber base provides the primary structural framework, while the barrier layer is applied as a distinct coating layer. This segmentation allows each component to be optimized independently for its specific function.
Solution Approach 2:
The patent applies local quality by providing different properties in different parts of the tray. The molded fiber base material provides structural strength and rigidity where needed, while the barrier layer coating provides localized moisture protection and chemical inertness at the contact surfaces with contents.
3Reliability
If barrier layers are applied to internal surfaces, then chemical inertness is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by forming the barrier layer coating on the molded fiber tray during the molding process itself, rather than as a separate post-processing step. This integrated approach reduces manufacturing complexity by combining two operations into one, while still achieving the desired chemical inertness and moisture resistance.
Data Source
AI summary
Disclosed herein are molded fiber trays. A molded fiber tray includes a base, a sidewall extending from the base to form a content holding structure, an edge extending from the sidewall configured for holding the molded fiber tray, and a barrier layer formed on an internal surface of the base, the sidewall, and the edge. The barrier layer configured to substantially chemically inert with respect to contents in the content holding structure. The base can include a geometric pattern. The sidewall can include a step.