Foldable Utensil with Tab-Lock Assembly to Reduce Material Waste
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Solution Overview
Problem
Existing single-use utensils are inefficient in terms of material usage, recyclability, compostability, and cube utilization, leading to increased environmental impact and costs due to poor packing density and misprocessing by consumers.
Innovation Solution
Constructible utensils made from deformable sheets with strategically placed scores that allow users to fold and deform the material into functional shapes, using sustainable materials and minimizing material usage while ensuring compostability and recyclability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional single-use utensils are used, then ease of operation is improved, but material waste increases and packing density decreases
Solution Approach 1:
The utensil is segmented into multiple functional zones along its length, with scores creating distinct regions that fold into different three-dimensional structures. This allows a single flat piece of material to create multiple functional elements, reducing overall material usage while maintaining full functionality.
Solution Approach 2:
The utensil transitions from a two-dimensional flat sheet to a three-dimensional constructed form through folding along predetermined scores. This dimensional transformation enables compact packaging in the flat state while providing full three-dimensional functionality when constructed, improving packing density without sacrificing ease of use.
2Ease of operation
If traditional single-use utensils are used, then ease of operation is improved, but cube utilization worsens
Solution Approach 1:
The utensil is designed as a flat two-dimensional sheet that folds into three-dimensional structures. This allows the product to occupy minimal space during storage and shipping while providing full three-dimensional functionality when constructed, directly improving cube utilization without affecting ease of operation.
Solution Approach 2:
Multiple utensils can be nested within each other in their flat, unconstructed state, allowing efficient stacking and packing. The nested configuration maximizes the number of units per shipping container while maintaining product integrity and ease of use.
3Loss of substance
If constructible utensils with scores are used, then material waste is reduced, but device complexity increases
Solution Approach 1:
The flat sheet is segmented into multiple zones by scores, creating predetermined fold lines that guide the construction process. This segmentation reduces material waste by optimizing the layout of functional elements while the scores themselves serve as simple visual and tactile guides, minimizing the cognitive complexity for the user.
Solution Approach 2:
The scores are pre-formed during manufacturing, creating predetermined fold lines that guide the user through the construction process. This preliminary action reduces the complexity of the final assembly step, as the user only needs to follow the pre-established score lines rather than figuring out the three-dimensional form from scratch.
4Reliability
If constructible utensils are used, then recyclability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The utensil is designed to be constructed from a single material type throughout, without composite layers or adhesive bonds that would complicate recycling. The scores are formed through controlled deformation rather than chemical bonding, allowing the entire structure to be processed as one material stream, improving recyclability while requiring precise control over the folding parameters during construction.
Data Source
AI summary
Utensil elements and methods for their fabrication. In one embodiment, a planar utensil element is fabricated of a foldable material, and has a length greater than a width. The planar utensil element comprises first and second scores, said scores being generally symmetrical about a midline running along the length of the planar utensil element, and indicative of where the planar element is to be folded in order to become a usable utensil. Folding the planar utensil element about the first and second scores produces a handle and a bowl. The handle is formed by two generally symmetrical halves joined together by interconnecting tabs in a “tab-lock” arrangement.