Method of forming a unitary down feather article having different density sections therein
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Solution Overview
Problem
Existing methods for using down feathers as thermal insulation in products face challenges such as material waste, labor-intensive processes, and uneven insulation distribution, leading to inefficiencies and aesthetic issues like bulging parts and clumping over time.
Innovation Solution
A method of forming a single, shaped down feather article with different density sections by using a mold with a non-uniform cavity, filling it with a down feather cluster mixture and a heat-reacting binder, heating to fuse the components, and cooling to create sections with varying thermal insulation values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If down is used in free form for thermal insulation, then maximum warmth with minimal weight is achieved, but the material cannot be maintained in a captive manner causing waste and health hazards
Solution Approach 1:
The down is processed into discrete sheet forms with specific dimensions and densities, segmenting the material into manageable units that can be captive maintained while preserving the thermal insulation properties of the original down clusters
Solution Approach 2:
The down is formed into flexible sheet structures that can be contained and secured within products, creating a captive manner usage while maintaining the lightweight characteristic of the down material
2Stability of the object's composition
If down sheet material is used to eliminate bulging and clumping, then uniform appearance and performance are achieved, but material waste occurs during cutting and stitching processes
Solution Approach 1:
The down sheets are pre-formed with specific densities and dimensions before being integrated into products, eliminating the need for cutting and stitching during product assembly and thereby preventing material waste while maintaining uniform appearance and performance
3Adaptability or versatility
If different thickness insulation is provided in different parts of a product, then tailored thermal insulation is achieved, but multiple down panel sections require additional labor and retention means
Solution Approach 1:
The molding process creates down sheets with spatially varying densities within a single continuous sheet, providing different insulation values in different locations without requiring multiple separate panels, thereby achieving tailored insulation while simplifying the overall structure and reducing labor requirements
4Ease of manufacture
If down clusters are released in the air during manufacturing, then material can be processed, but health hazards are created for workers
Solution Approach 1:
The down is formed into continuous sheet structures that contain the clusters within a cohesive matrix, preventing cluster release during handling and processing while maintaining the manufacturability of the material through molding and forming operations
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 approach minimizes material waste, reduces labor costs, and provides tailored insulation where needed, ensuring consistent performance and comfort without bulging or clumping, while allowing for the integration of down feathers in various commercial applications.
Implementation Method 1
heating to fuse the components
Implementation Method 2
heating to fuse the binder material to produce a sheet
Implementation Method 3
Down is a fluffy material formed of clusters that trap air molecules in small pockets which create a thermal barrier
Implementation Method 4
forming a mold with a cavity defining a non-uniform prescribed shape with different thickness areas
Implementation Method 5
cooling to create sections with varying thermal insulation values
Data Source
AI summary
A method of forming a single piece, shaped, down feather thermally insulating article having different thermal insulating sections is described. A mold is formed with a cavity defining a non-uniformed prescribed shape and having sections of different shapes and depths. Down feather clusters or a mixture thereof is mixed with a binding material and is injected into the mold which is then heated with a suitable heat source to cause the binding material to soften and fuse the mixture together. After cooling the mold, there is formed a single piece, shaped, down feather article which is comprised of sections having different thermal insulating values for use in a product where parts of the product provide different thermal insulating properties.