Interlocking Sandwich Panel Profiles for Reversible Roof Cladding

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Solution Overview

Problem

Existing sandwich panels struggle with adapting to non-standard dimensions and reversing the installation sequence, particularly in redevelopment projects, while maintaining thermal insulation and mechanical seal integrity.

Innovation Solution

A sandwich panel design featuring profiles on lateral faces for interlocking, allowing for customizable dimensions and reversible installation, using polymeric profiles for thermal breaks and mechanical seals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If standard sandwich panels with fixed formats are used, then manufacturing and installation are simplified, but adaptability to non-standard dimensions and reversible installation become difficult

Engineering Contradiction:
Improveadaptability to non-standard dimensionsVSAvoidpanel design complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The panel is divided into modular components: a core insulating layer and detachable lateral profiles with interlocking mechanisms. This segmentation allows the profiles to be removed and reattached, enabling reversible installation while maintaining adaptability to different dimensions through profile configuration changes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lateral profiles incorporate movable interlocking elements that can be engaged or disengaged. This dynamic feature allows the panel to transition between fixed and reversible installation states, providing adaptability to non-standard dimensions while controlling design complexity through standardized profile components.

Inventive Principle:
Principle #15Dynamics

2Reliability

If lateral profiles are added for interlocking and thermal breaks, then thermal insulation and mechanical seal integrity are improved, but device complexity increases

Engineering Contradiction:
Improvemechanical seal integrityVSAvoidprofile structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The lateral profiles integrate multiple functions into a single component: mechanical interlocking for seal integrity, thermal breaking for insulation, and attachment mechanisms for reversible installation. This merging improves reliability across multiple parameters while controlling device complexity by consolidating functions rather than adding separate components.

Inventive Principle:
Principle #5Merging (Combining)

3Temperature

If polymeric profiles are used for thermal breaks, then thermal insulation performance is improved, but mechanical strength may be reduced

Engineering Contradiction:
Improvethermal insulation performanceVSAvoidmechanical strength of profile
Core Design Contradiction:
TemperatureVSStrength

Solution Approach 1:

The lateral profiles are constructed from composite materials combining polymeric components for thermal breaking with reinforcing elements for mechanical strength. This composite approach maintains the thermal insulation benefits of polymeric materials while compensating for their lower mechanical strength through material composition design.

Inventive Principle:
Principle #40Composite materials

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 precise on-site adaptation and reversible installation, ensuring thermal insulation and mechanical integrity, compatible with standard panels and enhancing energy efficiency in redevelopment projects.

Implementation Method 1

using polymeric profiles for thermal breaks

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 2

two metal sheets each applied on a main face of the intermediate layer

Methodology Applied
Scientific EffectAdhesion: Adhesive

Data Source

PatentEP4417759B1Sandwich panel for cladding or covering roofs or for the construction of walls as well as a method for obtaining the same
Publication Date: 2026.04.08 ISOPAN SPA
  • EP4417759B1 patent drawingFigure 1~3
  • EP4417759B1 patent drawingFigure 4~6
  • EP4417759B1 patent drawingFigure 7a~7e

AI summary

The present invention relates to a sandwich panel with a first main layer or block (2), at least one first sheet (3), at least one second sheet (4) and at least one profile (5, 6).