Fiber-Reinforced Sanitary Basin Surface for Crack Resistance
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Solution Overview
Problem
Sanitary basin molded parts, such as kitchen sinks and shower trays, face challenges with large mass and complex handling due to their weight, and are prone to stress cracks from mechanical abrasion, scratches, and thermal stresses, requiring high-grade resins and complex process control to prevent damage.
Innovation Solution
A fiber fabric impregnated with a cured binding agent is applied as a covering layer on the visible side of the sanitary basin molded part, providing additional mechanical stability and impact resistance, while also enhancing the surface appearance and preventing stress cracks from heat/cold stresses through a compressive stress mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If basin molded parts are manufactured from polymerized cured binder with fillers to achieve high visual quality and abrasion resistance, then surface quality and functional properties are improved, but mass increases to greater than 10 kg making transport and assembly difficult
Solution Approach 1:
The basin molded part is divided into two functional components: a lightweight main body providing basic structure and a separate covering layer providing surface quality. This segmentation allows the main body to be optimized for low weight while the covering layer is optimized for surface appearance and abrasion resistance, resolving the contradiction between weight and surface quality.
Solution Approach 2:
The invention uses a composite structure combining a polymerized cured binder with fillers in the covering layer. This composite material provides both the desired surface quality and abrasion resistance while maintaining lightweight properties, as the covering layer is applied only on the visible side rather than requiring the entire part to be heavy-duty material.
2Reliability
If high-grade resins and complex process control are used to prevent stress cracks from thermal and mechanical stresses, then reliability against stress cracks is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The covering layer is applied in advance during manufacturing with specific material properties and thickness that pre-compensate for thermal expansion and contraction stresses. This preliminary action embeds stress-crack prevention into the structure itself, eliminating the need for complex process control during use and reducing manufacturing complexity while maintaining reliability.
3Ease of operation
If the main body thickness is reduced to ease handling and reduce mass, then ease of operation is improved, but surface quality on the visible side deteriorates
Solution Approach 1:
The basin molded part is segmented into a thin main body for ease of handling and a separate covering layer for surface quality. The main body can be manufactured with reduced thickness to improve handling and reduce mass, while the covering layer applied on the visible side restores and enhances surface appearance, effectively resolving the contradiction between handling ease and surface quality.
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 solution significantly improves the surface stability and aesthetic appeal of sanitary basin molded parts by reducing the risk of stress cracks and enhancing impact resistance, while allowing for easier handling and design flexibility, with the fiber fabric and binding agent combination providing effective compressive stress to prevent damage from thermal and mechanical stresses.
Implementation Method 1
the fiber fabric and binding agent combination providing effective compressive stress to prevent damage from thermal and mechanical stresses
Data Source
AI summary
A sanitary basin molded part, for example a kitchen sink, a washbasin or a shower tray, has a main part (10) that has the shape of the sanitary basin molded part and ensures its mechanical stability. On the visible side of the sanitary basin molded part a covering layer (20) is arranged in at least one surface region on top of the main part (10). The covering layer includes a fibrous tissue (24) saturated with a cured binding agent. A method produces a sanitary basin molded part of this kind.