Façade Cladding Profile with Coextruded Shadow Gap Layer
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Solution Overview
Problem
Existing facade cladding profiles face issues with the detachment of UV-sensitive film layers at the shadow gap surface due to poor adhesive bonding, especially under extreme heat conditions, and the economic inefficiency of coloring the entire base profile to achieve a different color for the shadow gap surface.
Innovation Solution
A coextrusion layer is integrated with the base profile, forming a seamless transition and using a different colored plastic material to create the shadow gap surface, ensuring strong adhesion and efficient color application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a PVC film with acrylic coating is used for the shadow gap surface, then UV resistance is improved, but adhesive bonding deteriorates causing film detachment under heat
Solution Approach 1:
The invention extracts the acrylic coating from the shadow gap surface film, allowing the use of a different film configuration or material composition that does not require the acrylic coating, thereby eliminating the adhesion problem while maintaining UV resistance through alternative means
Solution Approach 2:
The invention uses a composite structure consisting of a base profile made of one material (e.g., PVC) and a shadow gap surface made of a different material or material composition (e.g., uncoated PVC film or differently formulated polymer), where the materials are bonded through direct adhesion without the interfering acrylic coating layer
2Shape
If the entire base profile is colored to achieve different shadow gap surface color, then color differentiation is improved, but manufacturing cost increases
Solution Approach 1:
The invention segments the base profile into functionally distinct parts: a standard-colored base profile and a separately applied shadow gap surface with different coloring. This allows color differentiation to be achieved only where needed (shadow gap area) rather than coloring the entire profile, reducing pigment usage and manufacturing cost
Solution Approach 2:
The invention applies color differentiation locally only to the shadow gap surface area rather than the entire base profile. The shadow gap surface is colored differently through selective application of colored film or localized coloring processes, achieving the desired aesthetic effect while minimizing material costs
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 provides a durable, visually appealing, and weather-resistant facade cladding with improved adhesive bonding and cost-effective color differentiation between the visible and shadow gap surfaces, preventing film detachment and reducing heat transmission.
Implementation Method 1
the shadow gap surface is formed by a coextrusion layer integrally connected to the base profile
Implementation Method 2
the visible surface is formed by a plastic film fastened to the base profile
Implementation Method 3
the PVC material, preferably in granular form, is thermally melted and pressed through a mold. The PVC cools slowly and retains its shape
Data Source
Figure 1
Figure 1a
Figure 1b
AI summary
The invention relates to a facade cladding profile (10) comprising a base profile (20) made of plastic, in particular of extruded plastic, a visible surface (12) and an adjoining shadow gap surface (13), as well as a fastening strip (15), in particular which adjoins the shadow gap surface (13), wherein the visible surface (12) is formed by a plastic film (19) attached to the base profile (20) and the shadow gap surface (13) is designed differently than the visible surface (12), wherein the shadow gap surface (13) is formed by a coextrusion layer (21) that is materially bonded to the base profile (20).