Lotioned Fibrous Structures With Discrete Pillow Patterns for Sheet Control
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Solution Overview
Problem
Existing fibrous structures, such as sanitary tissue products, face challenges in achieving improved lotion transfer and better sheet control during papermaking, often resulting in necking and reduced sheet width stability.
Innovation Solution
The development of fibrous structures with a surface pattern comprising a continuous knuckle region and a plurality of discrete pillow regions, where the pillow regions are non-parallelly juxtaposed and have specific dimensions and orientations, is achieved using patterned molding members like resin-containing belts, which enhance lotion transfer and reduce necking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a continuous knuckle network with discrete pillows is used to improve lotion transfer, then lotion transfer is improved, but sheet control deteriorates and necking occurs
Solution Approach 1:
The continuous knuckle network is segmented into discrete knuckle groups arranged in parallel rows, with discrete pillows positioned between the rows. This segmentation prevents the sheet from narrowing (necking) during papermaking while maintaining the lotion transfer benefits of the pillow regions.
Solution Approach 2:
The molding member design creates an asymmetric pattern where knuckle groups are arranged in parallel rows with specific spacing, and discrete pillows are positioned between the rows rather than within a continuous network. This asymmetric arrangement improves sheet control while maintaining lotion transfer properties.
2Quantity of substance
If discrete pillows are used within a continuous knuckle network, then lotion transfer is improved, but sheet width stability deteriorates
Solution Approach 1:
The knuckle network is divided into separate knuckle groups arranged in parallel rows, with discrete pillows positioned between the rows rather than embedded within a continuous network. This segmentation maintains sheet width stability while preserving lotion transfer through the pillow regions.
Solution Approach 2:
The design transitions from a two-dimensional continuous knuckle network to a three-dimensional arrangement with parallel rows of knuckle groups and discrete pillows positioned between the rows. This dimensional change improves sheet width stability while maintaining lotion transfer capabilities.
Data Source
AI summary
Fibrous structures having a surface pattern of a continuous knuckle region and a plurality of discrete pillow regions such that the fibrous structures exhibit improved lotion transfer compared to known fibrous structures and better sheet control during the making of such fibrous structures are provided.