Composite Nonwoven Sheet Material Layering for Absorption and Cleaning
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Solution Overview
Problem
Existing absorbent nonwoven sheets used for wiping have poor absorption capacity and liquid release capabilities, despite their efficiency in deep cleaning and quick liquid absorption due to the introduction of microfibers.
Innovation Solution
A composite nonwoven sheet material is developed with a pulp-enriched layer and a microfiber-enriched layer, both bonded to a reinforcement material, providing distinct surface textures and enhanced cleaning performance and liquid absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If microfibers are introduced to improve deep cleaning and quick liquid absorption, then cleaning efficiency is improved, but absorption capacity and liquid release capability deteriorate
Solution Approach 1:
The nonwoven sheet is segmented into multiple layers with distinct functions: a first outer layer enriched with pulp fibers for absorption, a second outer layer enriched with microfibers for cleaning, and an inner layer for support. This segmentation allows each layer to optimize its specific function without compromising the others.
Solution Approach 2:
Different regions of the nonwoven sheet have different fiber compositions and properties. The first outer layer has high pulp content for absorption, the second outer layer has high microfiber content for cleaning, creating local quality variations that address different functional requirements simultaneously.
2Ease of manufacture
If a single-layer nonwoven sheet is used, then manufacturing is simple, but functional performance deteriorates
Solution Approach 1:
The nonwoven sheet is divided into multiple layers with distinct functions: a first outer layer enriched with pulp fibers for absorption, a second outer layer enriched with microfibers for cleaning, and an inner layer for support. This segmentation allows each layer to optimize its specific function without compromising the others.
Solution Approach 2:
The nonwoven sheet combines different fiber types (pulp fibers and microfibers) in a composite structure where each material contributes its unique properties. The pulp fibers provide absorption capability while the microfibers provide cleaning efficiency, creating a composite material with superior overall performance.
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 composite sheet material achieves improved cleaning performance and liquid absorption capacity, with a soft and smooth microfiber layer for deep cleaning and a rough pulp layer for scrubbing, while maintaining high capillary forces for effective surface contact.
Implementation Method 1
wipes comprising microfibers may absorb a liquid very quickly due to the high capillary forces of the material
Implementation Method 2
They typically comprise a combination of synthetic fibers and cellulosic pulp for absorbing water and other hydrophilic substances
Data Source
AI summary
A composite nonwoven sheet material includes pulp fibers, a reinforcement material and microfibers. The sheet material has one pulp-enriched first outer layer and one microfiber-enriched second outer layer, the reinforcement material is thereby interposed between the pulp-enriched first outer layer and the microfiber-enriched second outer layer and the pulp fibers and the microfibers penetrate the reinforcement material. Also disclosed is a process of producing such composite nonwoven sheet material and the use of such composite nonwoven sheet material.