Bound Down Feather Sheet for Uniform-Insulation Duvet Covers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Duvet covers with down insulation face issues of uneven thermal insulation due to displacement of down feathers during fabrication and use, leading to irregular distribution and visible stitching irregularities, as well as the need for constant shaking to redistribute down feathers.
Innovation Solution
A duvet cover design featuring a base sheet and top sheet interconnected by stitched seams with a down feather sheet of constant density, where the down feathers are retained by a binder, ensuring uniform thermal insulation and preventing displacement, allowing for aesthetically pleasing stitch patterns without concerns of loose down feathers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If loose down feathers are used between fabric sheets, then lightweight insulation is achieved, but down feathers displace and form uneven distribution during use
Solution Approach 1:
The down feathers are bound into a sheet structure before being inserted into the duvet cover. This preliminary binding action prevents the down from dispersing unevenly during use, as the feathers are already organized in a stable configuration that maintains uniform distribution throughout the product.
Solution Approach 2:
The invention combines down feathers with binding materials to create a composite down feather sheet. This composite structure integrates the insulating properties of down with the structural stability of the binding material, preventing feather displacement while maintaining lightweight insulation.
2Adaptability or versatility
If quilt stitches are spaced far apart to create large pockets, then aesthetic design freedom is improved, but down feathers propagate to corners and distribute unevenly
Solution Approach 1:
The down feather sheet is pre-formed with uniform density before insertion into the duvet cover. This eliminates the problem of down propagation to corners, as the feathers are already distributed evenly in the sheet structure, allowing quilt stitches to be spaced far apart for aesthetic purposes without compromising distribution uniformity.
3Ease of manufacture
If loose down feathers are used during stitching, then manufacturing process is simplified, but stitching irregularities occur due to heavy down underlay or no down
Solution Approach 1:
The down feathers are bound into a stable sheet structure before the stitching process. This preliminary action eliminates the variability of loose down during stitching, ensuring that the needle encounters consistent material density throughout the stitching process, thereby preventing stitching irregularities while maintaining manufacturing simplicity.
4Ease of operation
If down feathers are allowed to move freely, then insulation can be redistributed by shaking, but constant shaking is required to maintain even distribution
Solution Approach 1:
The down feathers are bound into a sheet with uniform density before insertion into the duvet cover. This preliminary configuration eliminates the need for constant shaking and redistribution, as the uniform binding structure maintains even insulation distribution automatically throughout the product's use.
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 a duvet cover with uniform thermal insulation, preventing down feather displacement and allowing for customizable thermal properties, eliminating cold spots and visible stitching irregularities, while enabling easy storage and adjustment of insulation.
Implementation Method 1
A down feather sheet is retained between the base sheet and the top sheet, wherein the down feathers are retained captive by a binder
Implementation Method 2
down feathers provide excellent insulating properties. The higher the fill power (fluffiness) of the down and therefore the more air trapped in the down, the more insulating ability an ounce of the down will have
Data Source
AI summary
A duvet cover is comprised of a base sheet and a top sheet interconnected together by a peripheral stitched seam. A down feather sheet is retained between the base sheet and the top sheet. The down feather sheet has a substantially constant density of down feathers with the down feathers being retained captive by a binder thereby the duvet cover has a substantially constant insulating factor throughout because the down feathers are immovably retained therein. Such a duvet cover permits the creation of all sorts of stitched or quilted designs therein without concern for the propagation of the down feathers between the base sheet and the top sheet of the duvet which would create irregular insulation.