Barrier-Layer Cleaning Wipe for Cross-Contamination Control
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Solution Overview
Problem
Traditional cleaning wipes fail to prevent cross-contamination of operators' gloves and surfaces due to their high absorbency, which allows contaminants to be transferred, and the use of adhesives can further contaminate cleaned items.
Innovation Solution
A cross-contamination prevention wipe is designed with a cleaning layer that traps contaminants and a directly bonded barrier layer to prevent transmission, where the barrier layer is mechanically fastened or fused to the cleaning layer, reducing the risk of contamination and adhesive transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional wipes use high absorbency materials to collect contaminants, then cleaning effectiveness is improved, but glove contamination increases
Solution Approach 1:
The wipe is divided into two distinct functional layers: a cleaning layer for contaminant collection and a barrier layer for contaminant containment. This segmentation allows each layer to perform its specific function without interfering with the other, resolving the contradiction between effective cleaning and glove protection
Solution Approach 2:
The barrier layer acts as an intermediary between the cleaning layer and the glove, preventing direct contact between contaminants collected by the cleaning layer and the glove surface. This intermediary layer resolves the contradiction by allowing cleaning to occur while blocking contaminant transmission to the glove
2Strength
If adhesive is used to attach different parts of the wipe together, then structural integrity is improved, but surface contamination risk increases
Solution Approach 1:
The adhesive is completely removed from the wipe structure. Instead of using adhesive to attach the barrier layer to the cleaning layer, the patent uses heat sealing to bond the layers together. This extraction of the adhesive eliminates the source of potential surface contamination while maintaining structural integrity through an alternative bonding method
Solution Approach 2:
The chemical bonding method (adhesive) is replaced with a thermal bonding method (heat sealing). This substitution eliminates the need for adhesives that could contaminate surfaces while still achieving the required structural integrity through heat-activated bonding of the wipe layers
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 blocks contaminants from reaching gloves and surfaces, reducing hazardous waste disposal and minimizing the risk of surface contamination, while allowing for effective cleaning and visual guidance during use.
Implementation Method 1
a barrier layer which prevents transmission of the contaminants from the cleaning layer and through the barrier layer
Implementation Method 2
the barrier layer is made of materials like polyethylene and is bonded to the cleaning layer using ultrasonic welding
Implementation Method 3
a cleaning layer having fibers which collect and trap contaminants
Data Source
AI summary
The present invention provides a cross-contamination prevention wipe, comprising a cleaning layer having fibers which collect and trap contaminants and a barrier layer which prevents transmission of the contaminants from the cleaning layer and through the barrier layer, wherein the barrier layer is directly bonded to the cleaning layer.