Floor Panel with Nested Recesses for Acoustic Absorption

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Solution Overview

Problem

Existing floor panels lack effective sound-absorbing properties, which are essential for reducing noise and improving speech intelligibility in rooms, particularly in spaces like concert halls and recording studios.

Innovation Solution

The floor panel design features a wood-based carrier board with a groove and tongue profile, incorporating a large number of recesses with small upper sections and larger lower sections, where the upper sections have a cross-sectional area that prevents liquid penetration and are designed to open into large cavities, enhancing sound absorption. Additionally, blind holes can be included to simplify production and appearance, with a final layer of acoustic fleece and porous material for improved sound insulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the cross-sectional area of upper sections is reduced to prevent liquid entry, then ease of operation is improved, but sound absorption deteriorates

Engineering Contradiction:
Improveliquid resistanceVSAvoidsound absorption
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The recesses are designed as nested structures where the smaller upper section is positioned within the larger overall recess structure, allowing the small opening to serve as a protective barrier while the larger lower section provides the volume needed for sound absorption

Inventive Principle:
Principle #7Nested doll (Nesting)

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 sound absorption, reduces noise, and maintains panel stability while protecting against moisture and dirt, making it suitable for high-traffic areas with minimal visual impact.

Implementation Method 1

for each recess the cross-sectional area of each upper section is smaller than the cross-sectional area of the lower section

Methodology Applied
Scientific EffectSurface tension: Surface Tension

Implementation Method 2

Floor panel with sound-absorbing properties containing a support plate with a large number of recesses

Methodology Applied
Scientific EffectSound absorption: Acoustic Absorption

Data Source

PatentEP2404013B1Floor panel and method and device for producing same
Publication Date: 2016.08.17 FRITZ EGGER GMBH & CO OG
  • EP2404013B1 patent drawingFigure 1
  • EP2404013B1 patent drawingFigure 2a~2b
  • EP2404013B1 patent drawingFigure 3a~3f

AI summary

The invention relates to a floor panel (1) with sound-absorbing properties, comprising a carrier plate (2) which has an upper side (2a) and a lower side (2b), wherein the floor panel (1) has a plurality of cavities (3) which, starting from its upper side (1a), extend in the direction of its lower side (1b) and which completely penetrate the carrier plate (2), wherein each cavity (3) is subdivided into at least one upper portion (3a) and into exactly one lower portion (3b), wherein in each cavity (3) each upper portion (3a) extends from the upper side (1a) of the floor panel (1) to the lower portion (3b) and the lower portion (3b) extends from each upper portion (3a) to the lower side (2b) of the carrier plate (2) and wherein in each cavity (3) the cross-sectional area of each upper portion (3a) is smaller than the cross-sectional area of the lower portion (3b). The sound-absorbing properties are improved with such a floor panel (1). The invention also relates to a corresponding production method and to a corresponding production device.