EPDM Roller Shutter Box Insulation Shell

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Solution Overview

Problem

Existing roller shutter box insulation methods are insufficient in reducing noise permeability, allowing excessive sound to enter buildings despite the use of materials like cellular rubber and polystyrene.

Innovation Solution

A sound insulation shell made of PVC with an elastic sound insulation material, such as ethylene-propylene-diene rubber (EPDM), completely encloses the roller shutter box from the inside, ensuring a tight fit and enhanced soundproofing by covering the top, back, bottom, and side walls without gaps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If traditional insulation materials (cellular rubber, polystyrene) are used in the roller shutter box, then heat flow is reduced, but noise permeability remains excessive

Engineering Contradiction:

Improveheat flowVSAvoidnoise permeability

Core Design Contradiction:

Loss of energyVSObject-affected harmful factors

Solution Approach 1:

The patent applies composite materials by combining a viscoelastic foam material (for acoustic damping and noise absorption) with a plastic shell (for structural support and additional insulation). This composite structure simultaneously addresses both thermal insulation and noise reduction requirements, resolving the contradiction between heat flow reduction and noise permeability control.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent changes the material parameters by using a viscoelastic foam with specific acoustic damping properties rather than traditional rigid insulation materials. The foam's viscosity and elasticity parameters are optimized to absorb noise frequencies while maintaining thermal insulation performance, thus improving noise permeability without sacrificing heat flow reduction.

Inventive Principle:

Principle #35Parameter changes

2Loss of energy

If insulation is installed inside the roller shutter box, then heat loss is minimized, but the insulation does not fully enclose all surfaces leaving gaps

Engineering Contradiction:

Improveheat lossVSAvoidenclosure completeness

Core Design Contradiction:

Loss of energyVSManufacturing precision

Solution Approach 1:

The patent uses a flexible viscoelastic foam material that can conform to the internal surfaces of the roller shutter box, including the curved surfaces around the cylindrical roller shutter. This flexible foam completely encloses all surfaces without gaps, achieving both complete coverage and thermal insulation effectiveness.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent addresses the curved cylindrical surface of the roller shutter by using a foam material that can adapt to curved geometries. The foam is shaped to follow the cylindrical contour while maintaining contact with the roller shutter surface, ensuring complete enclosure of curved surfaces that rigid insulation materials cannot achieve.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Ease of manufacture

If the roller shutter box completely penetrates the masonry, then installation is simplified, but noise and heat flow pass through easily

Engineering Contradiction:

Improveinstallation simplicityVSAvoidnoise and heat flow transmission

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent applies the nesting principle by placing the viscoelastic foam insulation inside the roller shutter box, which itself is installed within the masonry opening. The foam is nested around the cylindrical roller shutter, creating multiple nested layers (foam inside box inside masonry) that collectively block noise and heat flow while maintaining the simple penetrated installation structure.

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

The solution significantly reduces noise transmission into buildings by altering the natural frequency of the roller shutter box and strongly attenuating specific sound frequencies, providing effective retrofittable sound insulation.

Implementation Method 1

The sound insulation according to the invention significantly reduces noise transmission into buildings by altering the natural frequency of the roller shutter box and strongly attenuating specific sound frequencies

Methodology Applied

Scientific EffectSound absorption: Acoustic Absorption

Implementation Method 2

Methodology Applied

Scientific EffectResonance: Resonance

Implementation Method 3

The sound insulation material preferably contains an elastic material, preferably ethylene propylene diene rubber (EPDM) or melamine foam

Methodology Applied

Scientific EffectDamping: Damping

Data Source

PatentEP4039935B1Noise insulation roller shutter box building side

Publication Date: 2025.01.08 PROFINE GMBH

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AI summary

A sound insulation (10) for a roller shutter box (1), which in the installation position in a masonry (14) of a building has a front (2) facing the environment U, a back (3) facing the interior of the building I, a bottom (4) facing the window (7) shaded by the roller shutter (9) of the roller shutter box (1), a top (5) facing away from the window (7), two side walls arranged perpendicular to the sides (2, 3, 4, 5) and an interior space (6) between the front (2), top (5), back (3), bottom (4) and side walls, completely encloses the top (5), back (3), bottom (4) and side walls (18) facing the interior of the building I.