Cardboard Cremation Container Structural Stiffness via Notched Lid
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Solution Overview
Problem
Cardboard cremation caskets face challenges in achieving stiffness to prevent distortion under load and aesthetics, as traditional materials like cardboard lack structural integrity and aesthetic appeal compared to traditional caskets.
Innovation Solution
The design incorporates a cardboard base with notched side walls and a lid with risers that fit into these notches, along with carrying straps and specific folding patterns to enhance structural support and aesthetic presentation, utilizing score lines and foldable panels to create a sturdy and visually appealing container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional cardboard materials are used for cremation caskets, then cost is reduced and combustibility is achieved, but structural stiffness and resistance to distortion under load deteriorate
Solution Approach 1:
The casket is divided into multiple structural components including a base, lid, header board, and corner posts, each serving specific structural functions. The base and lid are further segmented into wall portions and end portions with reinforced corners, allowing distributed load bearing rather than relying on monolithic cardboard strength
Solution Approach 2:
The design combines multiple cardboard components with different orientations and configurations to create a composite structure. The layering of base, lid, header board, and corner posts creates a multi-layer composite system that achieves enhanced stiffness and load-bearing capacity beyond what single-layer cardboard can provide
2Shape
If traditional cardboard materials are used for cremation caskets, then cost is reduced, but aesthetic appearance deteriorates
Solution Approach 1:
Different portions of the casket are given different structural characteristics - the header board provides a flat, formal surface suitable for inscriptions, the corner posts provide vertical emphasis and structural definition, and the base and lid provide stable geometric forms. Each component's shape is optimized for its specific location to achieve overall aesthetic enhancement
Solution Approach 2:
The design incorporates rounded corners on the base and lid portions, as well as curved transitions in the wall portions, to soften the appearance of the cardboard material and provide a more traditional, dignified aesthetic while maintaining manufacturing simplicity
3Stability of the object's composition
If cardboard is used without additional structural elements, then manufacturing is simple, but the casket twists and deflects under load
Solution Approach 1:
Corner posts are pre-installed at the corners of the base and lid before final assembly, providing predetermined structural support points that prevent twisting and deflection from occurring during use. The header board is also pre-formed with reinforced edges to maintain shape stability
Solution Approach 2:
The corner posts act as intermediary structural elements between the base and lid, providing vertical support and preventing lateral movement. These posts serve as mediators that transfer and distribute loads, preventing the cardboard walls from twisting or deflecting under the weight of the deceased
Data Source
AI summary
A cardboard cremation container has a cardboard base having a pair of opposed side walls, a pair of opposed end walls, and a bottom wall, and a cardboard lid on the base, the lid having a pair of opposed side walls, an end wall, a header wall, and a top wall. Each of the side walls of the base has a notch formed in an upper edge thereof. The side walls and the end wall of the lid extend outwardly beyond the side walls and one end wall of the base, and lower edges of the side walls and the end wall of the lid are positioned below upper edges of the side walls and the one end wall of the base. The header wall of the lid fits in the notches in the side walls of the base. The lid includes a riser at each corner of the lid formed by each lid side wall and a respective end of the lid end wall. The risers are supported on respective corners of the base formed by each base side wall and a respective end of the one base end wall.