Stitch-Bonded Disinfecting Wipe With Low-Bulk Scrubbing Texture
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Solution Overview
Problem
Existing sanitizing cleaning wipes are bulky and costly due to the need for substantial fiber content to prevent tearing, and they lack effective surface texture for aggressive cleaning.
Innovation Solution
A stitch-bonded construction using low denier yarns for stabilization and textured spun yarns in a zigzag pattern to create extended float segments, which form knotted nodes for enhanced scrubbing texture and are applied over a lightweight substrate, reducing bulk and cost while maintaining strength and scouring ability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If substantial fiber content is used in nonwoven sheets to prevent tearing, then strength and stability are improved, but the sheets become bulky and costly
Solution Approach 1:
The patent uses a thin film nonwoven substrate (5-30 gsm) that would normally be too weak for cleaning applications. By stitching this thin substrate with yarns in specific patterns, the invention creates a reinforced structure that provides tear resistance without requiring a thick, bulky material. The stitched construction allows the thin substrate to function as a strong, durable cleaning wipe.
Solution Approach 2:
The invention creates a composite structure by combining the nonwoven substrate with stitching yarns. The substrate provides the base material and absorbency, while the stitching yarns provide structural reinforcement and tear resistance. This composite approach allows the use of lightweight materials while achieving the strength properties of heavier materials.
2Strength
If substantial fiber content is used in nonwoven sheets to prevent tearing, then strength and stability are improved, but manufacturing cost increases
Solution Approach 1:
By using a thin film substrate instead of thick material, the patent reduces material costs while achieving sufficient strength through stitching reinforcement. The stitching process adds structural integrity without requiring expensive heavy-duty materials, making the product more cost-effective to manufacture.
Solution Approach 2:
The patent changes the weight parameter of the substrate from traditional heavy nonwoven (typically 50+ gsm) to a lightweight range (5-30 gsm). This parameter change, combined with the stitching construction, achieves the same functional strength at lower material cost and reduced manufacturing expense.
3Ease of manufacture
If traditional nonwoven sheets are used without surface texture, then manufacturing is simpler, but scouring ability and cleaning effectiveness are limited
Solution Approach 1:
The patent applies surface texturing only at specific locations where the stitching yarns intersect the substrate, rather than texturing the entire surface. The stitched areas create raised, textured regions that provide scouring ability, while the rest of the substrate remains smooth. This localized texturing approach maintains manufacturing simplicity while adding cleaning effectiveness where it is most needed.
Solution Approach 2:
The stitching process creates curved, raised surfaces on the substrate where the yarns penetrate and loop through the material. These curved, three-dimensional structures provide mechanical scouring action during cleaning, enhancing the ability to remove dirt and grime from surfaces compared to flat, smooth traditional wipes.
Data Source
AI summary
A disinfecting cleaning wipe of stitch-bonded construction. The wipe includes a stitching substrate of fibrous nonwoven material having a mass per unit area of not more than 30 grams per square meter. A first plurality of stitching yarns is disposed in stitched relation through the stitching substrate in a pattern of substantially parallel linear stitch lines extending in a first direction across the stitching substrate. At least a second plurality of stitching yarns is disposed in stitched relation through the stitching substrate in a repeating zigzag pattern to define a first group of surface yarn float segments extending diagonally between stitch positions at opposing linear stitch lines. A disinfecting solution at least partially saturates the cleaning wipe.