Emboss Roll Mixed Inclination Bosses Prevent Tissue Ridging
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Solution Overview
Problem
Tissue products embossed with conventional patterns often exhibit non-uniformity and ridging when rolled, affecting their appearance and perceived softness due to uneven buildup of embossed features.
Innovation Solution
A tissue product with a pattern of signature, macro, and micro bosses, where the major axes of signature boss groupings diverge in alternating directions, avoiding uneven buildup and enhancing bulk and surface distortion, with embossing or debossing techniques applied to create a uniform roll structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional emboss patterns are used to enhance bulk and perceived softness, then the surface area and bulk are improved, but the roll structure becomes non-uniform with ridging effects
Solution Approach 1:
The patent applies asymmetry by using emboss patterns where the major axes of signature boss groupings diverge in alternating directions (clockwise and counter-clockwise) from the machine direction. This asymmetric arrangement prevents the buildup and ridging effects that occur with conventional symmetric patterns, while still achieving the desired bulk enhancement through the signature, macro, and micro bosses.
2Area of stationary object
If emboss patterns are applied to increase surface area, then bulk and moisture holding capacity are enhanced, but appearance uniformity deteriorates due to uneven boss buildup
Solution Approach 1:
The patent applies local quality by incorporating multiple types of bosses (signature bosses with varying orientations, macro bosses, and micro bosses) that have different sizes, shapes, and orientations at different locations within the pattern. This creates a heterogeneous surface structure that maintains appearance uniformity while increasing overall surface area and bulk.
3Ease of manufacture
If traditional embossing patterns are used, then the embossing process is simple, but the perceived softness and tactile characteristics are insufficient
Solution Approach 1:
The patent applies segmentation by dividing the emboss pattern into distinct components: signature bosses (with clockwise and counter-clockwise diverging major axes), macro bosses, and micro bosses. This segmented approach allows each element to contribute differently to the tactile characteristics, with the signature bosses providing the primary softness perception while macro and micro bosses enhance the overall texture and bulk, all while remaining manufacturable using conventional embossing equipment.
Data Source
AI summary
An emboss pattern, tissue product and method of manufacturing tissue product having improved bulk and softness with minimal roll ridging. The pattern combines a plurality of aligned signature bosses with a grouping of signature bosses offset from the machine direction in a clockwise manner and another grouping of signature bosses being offset in a counter-clockwise manner.