Glazed Unit Profiled Bead Foaming Adhesion
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Solution Overview
Problem
Existing glazed units with thick bases of at least 5 mm thickness face challenges in manufacturing and mechanical/chemical attachment of cover pieces, particularly due to the complexity and expense of incorporating foaming agents or inserts, and the difficulty in achieving reliable bonding with a smooth surface.
Innovation Solution
A glazed unit with a profiled bead having a base made of material incorporating a foaming agent, allowing for a cover piece to be adhered using an adhesive layer sandwiched between the cover baseplate and the base, which is simpler, reliable, and compact, without mechanical attachment, and utilizing TPE as the material for the profiled bead and cover piece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If an insert is provided inside the base to occupy part of the volume, then the base can achieve the required thickness, but the manufacturing process becomes complex and expensive
Solution Approach 1:
The insert is removed from the structure entirely. Instead of providing an insert inside the base, the base is made directly from foamed plastic material that achieves the required thickness without any internal components, thereby eliminating manufacturing complexity while maintaining the thickness requirement.
Solution Approach 2:
The material parameters of the base are changed by using foamed plastic material with controlled density and thickness. The base thickness is achieved through material formulation and molding process parameters rather than through structural inserts, simplifying the manufacturing process.
2Strength
If the base thickness is increased to at least 5 mm, then the structural integrity is improved, but the attachment of cover piece becomes difficult to control industrially
Solution Approach 1:
The surface properties of the thick base are modified by creating a roughened surface through the foaming process. This surface treatment changes the adhesion parameters, enabling reliable attachment of the cover piece to the thick base structure while maintaining industrial controllability.
Solution Approach 2:
The base is constructed from composite foamed plastic material that combines structural integrity with surface properties suitable for attachment. The foamed structure provides both the required thickness for strength and the surface characteristics needed for controlled adhesive bonding.
3Device complexity
If a foaming agent is incorporated into the base material, then the manufacturing complexity is reduced, but the surface density decreases and surface smoothness is affected
Solution Approach 1:
The surface roughness caused by the foaming agent is converted from a disadvantage into a benefit for attachment. The bubbles and irregularities on the surface that result from foaming create increased surface area and mechanical interlocking, which improve adhesive bonding of the cover piece to the base.
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
Enables the effective and industrially controlled attachment of a cover piece beyond the thick base, resulting in a lightweight, reliable, and cost-effective glazed unit with improved manufacturing simplicity and surface adhesion.
Implementation Method 1
the material of the base (44) is such that it incorporates a foaming agent
Implementation Method 2
it incorporates a foaming agent... there are bubbles and a lower density
Implementation Method 3
said cover piece adhering to said profiled bead using an adhesive layer sandwiched between a face of said cover baseplate and a face of said base
Data Source
AI summary
A glazed unit includes a glazed element, and including a profiled bead having a base which has a thickness of at least 5 mm, the base of the profiled bead including a material incorporating a foaming agent, wherein the glazed unit includes a cover piece including a cover baseplate extending substantially parallel to the base and further toward the exterior than the base, the cover piece adhering to the profiled bead using an adhesive layer sandwiched between a face of the cover baseplate and a face of the base.