Floor Panel with Equal-Height Profiles for Liquid Resistance

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Solution Overview

Problem

Existing floor coverings made from interconnected panels have insufficient resistance to liquids, leading to deformation when water penetrates through the abutting edges, particularly at corners, due to inadequate sealing.

Innovation Solution

The panels feature longitudinally and short-side profiles arranged at the same height with vertically aligned locking elements, including projections and recesses, forming continuous sealing lips at corners to prevent water penetration, along with dust pockets and hydrophobic impregnation to enhance sealing efficacy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If panels are interconnected with traditional profiles at different heights, then mechanical locking is achieved, but liquid resistance is insufficient and water penetrates through butt joints

Engineering Contradiction:
Improveliquid resistanceVSAvoidwater penetration
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies equipotentiality by arranging all locking profiles (longitudinal and transverse) at the same height level, creating a uniform sealing plane. This eliminates height differences that previously allowed water to penetrate along the butt joints, as the locking elements now form a continuous barrier at a single elevation.

Inventive Principle:
Principle #12Equipotentiality

Solution Approach 2:

The patent merges the longitudinal and transverse locking profiles into a unified system where both operate at the same height. This integration creates a continuous sealing effect around the panel corners, preventing water penetration that occurred when profiles were at different elevations.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If panels use traditional mechanical locking profiles, then panels can be interconnected, but deformation occurs when water penetrates the panel interior

Engineering Contradiction:
Improvepanel interconnectionVSAvoidpanel deformation
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

By positioning all locking profiles at the same height, the patent creates a uniform structural plane that prevents water from entering along the joints. This eliminates the cause of interior moisture accumulation that led to panel deformation, while preserving the mechanical locking function.

Inventive Principle:
Principle #12Equipotentiality

Solution Approach 2:

The patent implements preliminary anti-action by designing the equal-height profile system to prevent water penetration before it can cause deformation. The sealing effect is built into the structure itself, counteracting the harmful effect of water ingress before it reaches the panel interior.

Inventive Principle:
Principle #9Preliminary anti-action

3Ease of operation

If panels have profiles at different heights for mechanical locking, then joining movement is enabled, but sealing efficacy is reduced allowing liquid accumulation

Engineering Contradiction:
Improvejoining movementVSAvoidsealing efficacy
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent maintains the scissors-like pivoting joining movement by keeping the longitudinal profiles functional, while simultaneously improving sealing efficacy by ensuring all profiles operate at the same height. This creates both a functional joint and an effective seal.

Inventive Principle:
Principle #12Equipotentiality

Solution Approach 2:

The patent combines the mechanical locking function with the sealing function by aligning all profiles at the same height. The longitudinal and transverse profiles work together as an integrated system that provides both joining movement capability and liquidtight sealing.

Inventive Principle:
Principle #5Merging (Combining)

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

This design significantly improves liquid resistance, preventing water from entering the panels and reducing deformation, allowing the panels to be used in areas previously unsuitable for wood-based materials like bathrooms.

Implementation Method 1

a first dust pocket (16) is formed at least in regions... which has a depth of between 0.01 and 0.10 mm

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

forming continuous sealing lips at corners to prevent water penetration

Methodology Applied
Scientific EffectSurface tension: Surface Tension

Implementation Method 3

hydrophobic impregnation to enhance sealing efficacy

Methodology Applied
Scientific EffectHydrophobic effect: Hydrophobe

Data Source

PatentEP4339394A1Panel and covering, in particular floor covering, with high resistance to liquids
Publication Date: 2024.03.20 LIGNUM TECH AG
  • EP4339394A1 patent drawingFigure 1
  • EP4339394A1 patent drawingFigure 2
  • EP4339394A1 patent drawingFigure 3

AI summary

The present invention relates to a panel and a covering formed therefrom, in particular a floor covering, which is formed from a plurality of interconnected panels according to the invention. The panels have a rectangular base body, with a profile for mechanically connecting two identical panels formed on each edge of the base body. A longitudinal profile, comprising a longitudinal tongue side and a longitudinal groove side, is formed in pairs on the long side of each of the opposite edges of the panels. On the other two opposite edges, the panel comprises a short-side profile, which has a short tongue side and a short groove side, respectively. A characteristic feature of the present panels according to the invention is that the respective longitudinal and short-side profiles are arranged vertically at the same height.