Down-fill pillow construction
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Solution Overview
Problem
Feather or down fill pillows suffer from instability, with down migrating and clumping within the pillow, potential escape during use or cleaning, and hazardous manufacturing methods, leading to discomfort, allergenic risks, and high costs.
Innovation Solution
A down-fill pillow construction featuring a fabric pouch with bound down feather sheets of even thickness, encapsulating a core body, preventing down escape and ensuring even distribution, using lightweight fabric sheets with binding properties and a core body for stability and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If loose down feathers are used to fill the pillow pouch, then softness and warmth are improved, but stability and even distribution deteriorate as down migrates and clumps
Solution Approach 1:
The down fill is segmented into individual feathers that are bound together in groups by binding agents, creating stable clusters that maintain even distribution while preserving the softness and warmth properties of loose down
Solution Approach 2:
A binding agent acts as an intermediary between down feathers, holding them in fixed positions relative to each other within the pouch, preventing migration and clumping while maintaining the desired softness and thermal properties
2Temperature
If small down feathers are used, then softness and warmth are improved, but the risk of escape and inhalation hazard increases
Solution Approach 1:
The down feathers are segmented into bound clusters of controlled size, preventing individual small feathers from escaping through the pouch fabric while maintaining the softness and warmth properties
Solution Approach 2:
The pouch fabric acts as a flexible barrier that, combined with the bound down clusters, prevents escape of small feathers while allowing the pillow to maintain its soft and warm characteristics
3Ease of manufacture
If manual or blown filling methods are used, then manufacturing flexibility is maintained, but manufacturing precision and worker safety deteriorate
Solution Approach 1:
The down feathers are pre-bound into clusters with controlled density and volume before insertion into the pouch, ensuring constant volume insertion and even distribution while simplifying the manufacturing process
Solution Approach 2:
The down feathers are combined with binding agents to create composite down clusters with controlled physical properties, enabling precise control over volume and distribution while maintaining ease of manufacture
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 stable, evenly distributed down fill that maintains shape and comfort, prevents down escape, reduces manufacturing hazards, and offers customizable softness and firmness while being cost-effective.
Implementation Method 1
the down feathers in the sheet are bound together throughout by a binding agent
Implementation Method 2
The down feather sheet has a memory which exhibits rebounding properties
Data Source
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AI summary
A down-fill pillow structure is formed by a fabric pouch in which is captively retained in close fit therein, one or more down feather sheet of predetermined density and substantially even thickness in which the down feathers are bound together by a binding agent. The down feather sheet has a memory which exhibits rebounding properties. A shaped core body may be inserted in the fabric pouch and encapsulated by the down feather sheet or sheet portions. The down-fill pillow may also be constructed as an ergonomic or non-allergenic pillow.