Elastomeric Drawstring Casing to Prevent Laundry Entanglement
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Solution Overview
Problem
Laundry equipment challenges include the need for significant velocity differential between garments and wash water to ensure cleaning, which can damage delicate items, and issues with drawstrings being twisted, stretched, or lost during the wash cycle, leading to increased workload and potential loss of valuable items.
Innovation Solution
An elastomeric tubular casing with gentle tapers and a non-stick exterior is used to encase drawstrings, providing securement, preventing retraction and entanglement, while the adhesive interior ensures the casing stays in place, and the material's elasticity prevents fraying and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If drawstrings are left loose during laundering, then they can move freely to contact wash water, but they become twisted, stretched, or entangled destructively
Solution Approach 1:
The patent introduces a laundry bag as an intermediary container that holds drawstrings during laundering. This mediator protects drawstrings from direct contact with wash water and tumbling motion that causes twisting and entanglement, while still allowing indirect cleaning through water penetration and gentle agitation.
Solution Approach 2:
The patent places drawstrings inside a laundry bag, creating a nested structure where the inner object (drawstring) is protected by the outer container (laundry bag). This nesting prevents drawstrings from being exposed to harmful mechanical stresses during the washing cycle.
2Productivity
If significant velocity differential is created between garments and wash water for cleaning, then cleaning effectiveness improves, but delicate items are damaged
Solution Approach 1:
The patent segments the laundering process by separating delicate items (drawstrings) into a dedicated laundry bag, allowing different washing intensities for different items. The laundry bag creates a localized low-stress environment for delicate items while the rest of the load can undergo more vigorous washing.
Solution Approach 2:
The laundry bag acts as a cushioning barrier that is applied beforehand to protect delicate items. The bag material absorbs and distributes mechanical stresses before they reach the drawstrings, preventing direct impact and friction damage during the high-velocity washing process.
3Reliability
If drawstrings are secured tightly to prevent movement, then entanglement is reduced, but cleaning contact with wash water is insufficient
Solution Approach 1:
The laundry bag provides localized protection properties - it creates a protected microenvironment for drawstrings while allowing controlled water penetration. The bag material has selective permeability that allows water to reach drawstrings for cleaning while preventing excessive mechanical stress and entanglement.
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 effectively secures drawstrings, prevents entanglement, and reduces the risk of loss or damage during laundering, making the process more efficient and protecting delicate items, while also offering aesthetic customization options.
Implementation Method 1
the material's elasticity prevents fraying and damage
Implementation Method 2
the adhesive interior ensures the casing stays in place
Implementation Method 3
the tube exterior defines a non-adhesive surface
Data Source
AI summary
An elastomeric tubular casing encompasses an elongate, flaccid, textile article. The elastomeric tubular casing has a tube interior; a tube exterior; and tube first and second ends. The elastomeric tube in a first post-production orientation is rolled into a doughnut geometry, and adapted to unroll about the elongate, flaccid, textile article to resume a generally cylindrical tubular geometry, and thereby encase a portion of the textile article. According to a method of laundering an elongate, flaccid, textile article, the elongate, flaccid, textile article is encased with an elastomeric sleeve, the elastomeric sleeve having an interior diameter approximately equal to an exterior circumference of the elongate flaccid textile article and the elastomeric sleeve extending longitudinally co-extensively the elongate, flaccid textile article. The encased textile article is then laundered. The elastomeric sleeve is removed from the laundered textile article to yield a laundered, elongate, flaccid, textile article.