Apertured Dusting Wipe Structure for Low-Oil Particle Pickup

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Solution Overview

Problem

Existing dusting wipes face challenges in achieving effective particulate pick-up performance while maintaining a low basis weight and minimal oil content, as they often require higher oil and basis weight to achieve satisfactory cleaning.

Innovation Solution

A low oil and basis weight, apertured dusting wipe with a nonwoven fabric featuring a plurality of apertures, mineral oil content of 1-15% by weight, and intermittent adhesive spot bonds, which enhances particulate pick-up performance by up to 13% compared to non-apertured or apertured fibrous webs without adhesive and mineral oil.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If non-apertured wipes with high basis weight and high mineral oil content are used, then particulate pick-up performance is improved, but fabric weight and oil content increase

Engineering Contradiction:

Improveparticulate pick-up performanceVSAvoidfabric basis weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The patent applies apertured nonwoven fabric with controlled porosity to enhance particulate pick-up performance. The apertures create capillary action and increased surface area for particle entrapment, allowing effective dusting with lower basis weight fabrics (20-60 gsm) compared to traditional non-apertured fabrics

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The patent optimizes mineral oil content to a specific range (1-15% by weight) and aperture density (at least 125 apertures per square inch) to achieve synergistic improvement in particulate pick-up performance while maintaining low basis weight, representing controlled parameter changes to resolve the contradiction

Inventive Principle:

Principle #35Parameter changes

2Reliability

If non-apertured wipes with high mineral oil content are used, then particulate pick-up performance is improved, but oil content increases

Engineering Contradiction:

Improveparticulate pick-up performanceVSAvoidmineral oil content

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The apertured structure provides enhanced particulate pick-up through capillary action and increased surface area, reducing dependence on high mineral oil content. The fabric achieves effective dusting with minimal oil (1-15% by weight) compared to traditional non-apertured fabrics requiring higher oil content

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The patent creates a composite structure combining apertured nonwoven fabric with controlled mineral oil content and optional adhesive binder, where the synergistic interaction between these components achieves superior particulate pick-up performance with reduced overall oil content compared to simple non-apertured fabric systems

Inventive Principle:

Principle #40Composite materials

3Reliability

If apertured fabric without adhesive binder is used, then manufacturing simplicity is maintained, but particulate pick-up performance is insufficient

Engineering Contradiction:

Improveparticulate pick-up performanceVSAvoidfabric construction complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent develops a composite fabric system incorporating apertured nonwoven substrate, mineral oil, and adhesive binder in specific combinations. This composite structure achieves synergistic enhancement of particulate pick-up performance (at least 8%, preferably at least 10%) compared to individual components alone

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The adhesive binder is applied in controlled amounts (0.5-5% by weight of fabric) to specific regions or throughout the fabric to enhance particulate adhesion locally where needed, improving overall pick-up performance without requiring uniform complex construction throughout the entire fabric

Inventive Principle:

Principle #3Local quality

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 apertured dusting wipe effectively removes particulate detritus such as food crumbs, dust, and dirt from surfaces with improved pick-up performance, ranging from 8% to 19%, even at low basis weights, utilizing a single-layer staple fiber substrate with hydraulic aperture formation and minimal mineral oil application.

Implementation Method 1

intermittent adhesive spot bonds in the fabric

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 2

apertured dusting wipe... at least about 125 apertures per square inch of fabric

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Data Source

PatentUS8257818B2Apertured dusting wipe

Publication Date: 2012.09.04 AVINTIV SPECIALTY MATERIALS INC

AI summary

The present invention relates to a low oil and basis weight, apertured dusting wipe exhibiting improved particulate pick up performance.