Nestable Molded Articles With Contoured Bead-and-Cove Walls
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Solution Overview
Problem
Conventional man-made molded articles with bead-and-cove profiles face challenges in uniform paintability due to density differences and non-uniform thickness, leading to inefficient stacking and increased production costs, as well as damage during shipping and handling.
Innovation Solution
The development of man-made molded articles with a bead-and-cove profile featuring a contoured wall with a substantially uniform thickness, varying by no more than +1% to -11% relative to the planar wall, allowing for stable nesting and multiple contact zones that reduce movement and abrasive contact between stacked articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional bead-and-cove molded profiles are used, then aesthetic appearance is achieved, but uniform paintability deteriorates due to density differences and non-uniform thickness
Solution Approach 1:
The patent applies local quality by creating a contoured wall with varying thickness distribution - thicker at the bead portion and thinner at the cove portion - while maintaining overall uniformity through controlled variation (+1% to -11%). This localized thickness adjustment ensures uniform paint application across different profile regions while preserving the aesthetic bead-and-cove shape.
2Shape
If conventional molded profiles with non-uniform thickness are used, then aesthetic appearance is achieved, but stacking stability deteriorates leading to damage during shipping
Solution Approach 1:
The patent implements nesting by designing the contoured wall profile to enable one molded article to nest within another during stacking. The bead-and-cove configuration allows adjacent articles to interlock, with the contoured walls providing complementary surfaces that reduce movement and prevent damage during shipping and handling.
3Shape
If conventional profiles are used, then aesthetic appearance is achieved, but material waste increases due to inefficient stacking
Solution Approach 1:
The nesting capability enabled by the contoured wall profile allows articles to be stacked efficiently with minimal void space between them. This reduces the overall volume required for storage and shipping, thereby reducing material waste and improving space utilization in the supply chain.
4Shape
If conventional profiles with non-uniform thickness are used, then aesthetic appearance is achieved, but paint requirements increase due to non-uniform absorption
Solution Approach 1:
The controlled thickness variation in the contoured wall (+1% to -11%) creates uniform paint absorption characteristics across the bead-and-cove profile. This local quality adjustment ensures that paint applies evenly without requiring excessive quantities to achieve uniform coverage, reducing material consumption while maintaining aesthetic appearance.
Data Source
AI summary
A man-made, molded article is provided. The article includes a profile including a planar wall, and an adjacent integral molded depression having a contoured wall extending downwardly from the planar wall. The contoured wall includes a bead portion, a cove portion, and a ledge between the bead and cove portions. The articles are stackable, one above another for transport, in a nestable relationship in which multiple contact zones are present between the contoured walls of an adjacently stacked pair of the molded articles. The contact zones include an arcuately extending contact interface zone between the bead exterior and interior surfaces. The depression has a substantially uniform thickness varying by no more than about +1 percent to about −11 percent in relation to a thickness of the planar wall. Related methods and assemblies are also provided.