Panel Edge Sealing With Recess-Filled Joint Against Moisture Delamination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for sealing the transition area between a profile applied to a narrow side and a seal on a worktop result in a weak connection, leading to moisture penetration and delamination, especially under heat and moisture exposure from kitchen appliances.
Innovation Solution
A method involving a bevel or recess in the transition area between the narrow and flat sides of a plate-shaped material substrate, filled with a sealing compound, and a plastic profile with an adhesion promoter, enhancing the contact surface and stability of the connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a profile and seal are attached to collide in the transition area, then sealing is achieved, but the contact surface area is very small leading to weak connection
Solution Approach 1:
The invention introduces a bevel or recess in the transition area between the narrow side and flat side, transforming a point/line contact into a surface contact by adding geometric dimensionality. This allows the sealing compound to occupy a three-dimensional space (the recess) and create extensive contact surfaces with both the profile and the substrate, resolving the contradiction between limited contact area and connection reliability.
Solution Approach 2:
The transition area is segmented into distinct zones: the bevel/recess region, the profile attachment area, and the seal application area. This segmentation allows each component to be optimized independently - the bevel provides structural support and contact surface, the profile provides edge protection, and the seal provides moisture barrier, collectively achieving reliable connection through distributed functionality.
2Strength
If polypropylene profile is used, then mechanical strength is achieved, but adhesion to sealing compound is poor without special pretreatment
Solution Approach 1:
An adhesion promoter is introduced as an intermediary substance between the polypropylene profile and the sealing compound. This mediator overcomes the inherent adhesion problems of polypropylene by chemically or physically enhancing the bonding interface, allowing strong adhesion without requiring complex pretreatment methods while maintaining the mechanical advantages of polypropylene.
Solution Approach 2:
The surface properties of the polypropylene profile are modified by applying an adhesion promoter, which changes parameters such as surface energy, roughness, or chemical reactivity. This parameter change enables the profile to achieve reliable adhesion to the sealing compound while retaining its original mechanical strength properties.
3Ease of manufacture
If seal is applied only on flat side, then application simplicity is maintained, but moisture can penetrate into the worktop through the transition area
Solution Approach 1:
The bevel or recess is created in advance during substrate preparation, before the seal is applied. This preliminary geometric modification provides a built-in moisture barrier structure that guides and contains the sealing compound, ensuring comprehensive coverage of the transition area without requiring complex sealing application procedures. The preventive geometry works together with the simple seal application to block moisture penetration.
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 method provides a permanent, heat-resistant, and moisture-impermeable seal, preventing delamination and swelling, even under adverse conditions, while being simple and cost-effective to implement using conventional tools and materials.
Implementation Method 1
the plastic profile being provided with an adhesion promoter on the side of the plastic profile to be applied to the narrow side
Implementation Method 2
the plate-shaped material substrate being provided with a bevel or recess in the transition area and the bevel or recess being filled with the sealing compound
Implementation Method 3
The method provides a permanent, heat-resistant, and moisture-impermeable seal, preventing delamination and swelling
Data Source
Figure 1
Figure 2
AI summary
The method for sealing a transition region between a plastic profile (4) applied to a narrow side (2) of a panel substrate (1) and a sealing mass (5) applied to a flat side (3) of the substrate, comprises filling a folded edge (6) of the substrate with the sealing mass. The folded edge extends itself over the entire length of the substrate or section-wisely extends over the entire length, and has square, triangular or circular cross section and/or extends over 10-20% of the height of the narrow side and/or over 1-5% of the width of the flat side. The substrate is a wood profile. The method for sealing a transition region between a plastic profile (4) applied to a narrow side (2) of a panel substrate (1) and a sealing mass (5) applied to a flat side (3) of the substrate, comprises filling a folded edge (6) of the substrate with the sealing mass. The folded edge extends itself over the entire length of the substrate or section-wisely extends over the entire length, and has square, triangular or circular cross section and/or extends over 10-20% of the height of the narrow side and/or over 1-5% of the width of the flat side. The substrate is a wood profile and has a coating in the form of a plastic film on the flat sides. The folded edge has a side length in the direction of the narrow side and/or the flat side of 1-10 mm. The narrow side of the substrate has a height of 3-6 cm and the flat side of the substrate has a width of 40-90 cm. A bonding agent (10-12 g/m 2>) is applied in a side of the plastic profile and comprises inorganic filler (15-30 wt.%). The plastic profile is applied on the narrow side after bringing in the folded edge by a hot-melt or dispersion adhesive and is applied with the sealing mass before filling of the folded edge. The filler particles are rod-shaped or spherical or circular filler particles and have an average particle size of 4-10 mu m. A filler-free or optionally filler-less hot-melt adhesive is used as sealing mass where the content of fillers related to the hot-melt adhesive is less than 1 wt.%. The sealing mass is filled by a slot-nozzle procedure, is applied in such a manner that the folded edge is completely filled with the sealing mass, and lies shortly on the side of the plastic profile applied on the narrow side. An area of the flat side of the material substrate is coated with the sealing mass, runs parallel to the folded edge, and extends over the entire length of the substrate. The area coated with a sealing mass has a width of 10-20% of the width of the flat side. An independent claim is included for a plate-shaped material part in the form of a kitchen and/or an operative plate.