Multilayer Premoistened Cleaning Wipe for Cracks and Crevices

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Solution Overview

Problem

Conventional single-layered premoistened cleaning wipes are inadequate for cleaning surfaces with narrow cracks, creases, and crevices, as they lack the necessary texture and versatility to effectively remove various types of detritus from diverse surfaces.

Innovation Solution

A premoistened multilayered cleaning wipe comprising a liquid-permeable first layer, a liquid-permeable second layer, and a core with a free liquid cleaning composition, where the first layer is apertured to capture lint and fluid transport, and the second layer is abrasive for dislodging soil, with longitudinal edge bonds providing structural integrity and flexibility for cleaning narrow areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single-layered premoistened wipe is used, then the device is simple and easy to manufacture, but it cannot effectively clean surfaces with narrow cracks, creases, and crevices

Engineering Contradiction:
Improvecleaning capability on diverse surfacesVSAvoidwipe structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The wipe is divided into multiple functional layers: a first layer with apertures for capturing lint and transporting fluid, a second layer with abrasive properties for dislodging soil, and a core layer for absorbing and releasing cleaning composition. Each layer performs a specific cleaning function, enabling the wipe to handle diverse surfaces and detritus types effectively.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The wipe combines different materials with complementary properties: a nonwoven fibrous material for the first layer, an abrasive material for the second layer, and an absorbent core material. This composite structure integrates multiple cleaning mechanisms (capture, dislodge, remove) into a single device, resolving the contradiction between versatility and complexity.

Inventive Principle:
Principle #40Composite materials

2Adaptability or versatility

If a single-layered wipe is used, then the manufacturing process is simple, but the wipe lacks the texture variety needed for different types of detritus

Engineering Contradiction:
Improvetexture variety for different detritusVSAvoidmanufacturing process
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The manufacturing process is segmented into separate steps for creating each functional layer. The first layer is formed with apertures through a specific process, the second layer is prepared with abrasive properties, and the core is saturated with cleaning composition. This segmentation allows each layer to be optimized for its specific function while maintaining manufacturability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The wipe is constructed as a composite of three distinct layers, each manufactured with specific properties and then bonded together. This approach maintains ease of manufacture through standardized layering processes while achieving texture variety and adaptability for different cleaning scenarios.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If a single-layered wipe is used, then the structure is simple, but the wipe cannot deeply penetrate into narrow cracks, creases, and crevices

Engineering Contradiction:
Improvepenetration into narrow spacesVSAvoidmultilayered structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The wipe transitions from a two-dimensional single layer to a three-dimensional multilayered structure with varying thicknesses and densities. The core layer provides bulk for penetration, while the outer layers provide cleaning surfaces, creating a dimensional solution that enables deep penetration into narrow spaces while maintaining cleaning effectiveness.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The multilayered structure can be viewed as nested functional elements where the core is nested between the first and second layers, and the longitudinal edge bonds are nested at the periphery. This nested configuration allows the wipe to maintain structural integrity while adapting to narrow spaces, resolving the contradiction between penetration capability and structural complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

4Strength

If a multilayered wipe with longitudinal edge bonds is used, then the wipe has structural integrity for navigating tight spaces, but the device complexity increases

Engineering Contradiction:
Improvestructural integrityVSAvoidnumber of bonds and layers
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The structural integrity is achieved through segmented bonding: longitudinal edge bonds connect the layers at the periphery to provide strength for navigating tight spaces, while the layers remain distinct for functional purposes. This segmentation provides necessary strength without requiring complete integration of all layers, thus managing complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bonding is applied locally at the longitudinal edges rather than across the entire wipe surface. This localized bonding provides structural integrity where needed (at the edges for handling and penetration) while leaving the central cleaning surfaces free and flexible, thus achieving strength without excessive complexity.

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 multilayered design allows for effective cleaning of surfaces with varying textures and types of detritus, including narrow cracks and crevices, by providing a soft compliant surface, an abrasive layer for soil removal, and structural integrity for navigating tight spaces.

Implementation Method 1

a free liquid cleaning composition comprising between about 0.001% to about 10% by weight of said liquid cleaning composition of surfactant, said cleaning composition releasably absorbed in said core

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

a liquid permeable first layer joined to a liquid permeable second layer

Methodology Applied
Scientific EffectPermeation: Permeation

Implementation Method 3

the second layer is abrasive for dislodging soil

Methodology Applied
Scientific EffectAbrasion: Abrasion

Implementation Method 4

a free liquid cleaning composition comprising between about 0.001% to about 10% by weight of said liquid cleaning composition of surfactant

Methodology Applied
Scientific EffectSurfactant action: Surfactant

Data Source

PatentUS9021647B2Disposable premoistened multilayered cleaning wipe
Publication Date: 2015.05.05 PROCTER & GAMBLE CO
  • US9021647B2 patent drawing
  • US9021647B2 patent drawing
  • US9021647B2 patent drawing

AI summary

A multilayered premoistened cleaning wipe having: a liquid permeable first layer joined to a liquid permeable second layer and a core disposed between the first layer and the second layer. A cleaning composition is releasably absorbed in the core. The cleaning composition has between about 0.001% to about 10% by weight of surfactant.