Artificial down filling material

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Solution Overview

Problem

Existing artificial down filling materials lack the light weight, high bulk, fluffiness, resilience, and memory effect similar to natural down, while also being cost-effective and efficient to produce.

Innovation Solution

The development of artificial down clusters using self-crimped multi-component filaments with a cross-section having at least three corners, combined with optional texturing and bonding, to create a fluffy and resilient filling material.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of stationary object

If conventional artificial down materials are used, then production cost is reduced, but bulk and fluffiness are insufficient

Engineering Contradiction:

ImprovebulkVSAvoidproduction complexity

Core Design Contradiction:

Volume of stationary objectVSEase of manufacture

Solution Approach 1:

The filling material is divided into multiple down clusters, each comprising several filaments bundled together at a bonding location. This segmentation creates a structure that mimics natural down clusters, providing high bulk and fluffiness while maintaining manufacturability through standardized cluster formation processes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The filaments are designed with asymmetric cross-sections featuring at least three corners, creating self-crimping behavior that generates bulk and resilience. This asymmetric geometry causes the filaments to naturally curl and interlock, forming fluffy clusters without requiring complex external structuring.

Inventive Principle:

Principle #4Asymmetry

2Volume of stationary object

If natural down is used, then bulk and memory effect are achieved, but cost and ethical concerns increase

Engineering Contradiction:

ImprovebulkVSAvoidcost

Core Design Contradiction:

Volume of stationary objectVSQuantity of substance

Solution Approach 1:

The invention creates artificial filaments that copy the essential structural and functional properties of natural down filaments, including the asymmetric cross-section and self-crimping behavior. This copying approach achieves natural-like bulk and resilience while using synthetic materials that are more cost-effective and ethically neutral.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The filament cross-section is engineered with specific geometric parameters (at least three corners) that trigger self-crimping behavior. By controlling parameters such as cross-sectional shape, material composition, and thermal properties, the invention achieves natural down-like bulk and memory effect through synthetic means.

Inventive Principle:

Principle #35Parameter changes

3Volume of stationary object

If self-crimped multi-component filaments with corners are used, then bulk and resilience are improved, but manufacturing complexity increases

Engineering Contradiction:

ImprovebulkVSAvoidfilament structure

Core Design Contradiction:

Volume of stationary objectVSDevice complexity

Solution Approach 1:

The filaments are designed to self-crimp through their own structural properties (asymmetric cross-section with at least three corners) without requiring external mechanical crimping devices. This self-service approach generates bulk and resilience automatically during the filament formation process, reducing manufacturing complexity despite the sophisticated filament geometry.

Inventive Principle:

Principle #25Self-service

4Reliability

If filaments are bonded together in clusters, then down-like properties are achieved, but production efficiency decreases

Engineering Contradiction:

Improvedown-like propertiesVSAvoidproduction efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

Multiple filaments are bundled and bonded together at a single bonding location to form down clusters. This merging approach combines the properties of individual filaments into a cluster structure that mimics natural down, achieving reliable down-like properties while maintaining production efficiency through a streamlined bonding process.

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

The solution provides artificial down clusters with high bulk, resilience, and a moderate recovery rate, resembling natural down, while being washable and cost-effective to produce.

Implementation Method 1

The filaments are preferably melt bonded together, i.e. heating the filaments to at least partly melt a section of them, whereby they are bonded together

Methodology Applied

Scientific EffectMelting: Melting

Implementation Method 2

The filaments are self-crimped multi-component filaments... providing artificial down clusters having high bulk, i.e. low density, as well providing artificial down filling material resilience resembling natural down

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS12495912B2Artificial down filling material

Publication Date: 2025.12.16 INTER IKEA SYST

AI summary

An artificial down filling material comprising artificial down clusters (1), wherein each of the down clusters (1) comprise a number of filaments (10) arranged side by side in a bundle, the filaments (10) being bonded, preferably melt bonded, together at a bonding location 20, wherein the filaments (10) are self-crimped, multi-component filaments (10), the cross-section of the multi-component filament having at least three corners (211).