Tissue Web Emboss Area for Quilted Caliper Retention
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Solution Overview
Problem
Existing tissue paper products struggle to maintain a soft, quilted appearance and high caliper throughout the converting and packaging process, as embossing patterns tend to collapse under pressure, and there is a need for aesthetically pleasing decorative patterns that balance softness, absorbency, drape, and bond strength.
Innovation Solution
The development of a multi-ply tissue paper product with embossment patterns on each ply, where the first ply's pattern focuses on aesthetics and the second ply's on functional properties, using a deep-nested embossing process to manage the quantity and placement of embossments, and adjusting the surface area of embossing to between 5% to 40% of the total surface area, incorporating a combination of 'dot' and 'line' embossments to enhance consumer appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If deep-nested embossing is used to maintain quilted appearance and caliper, then aesthetic quality and softness are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies nested embossing where one embossing pattern is embedded within another pattern, creating a multi-layered quilted appearance. The first embossing pattern creates primary quilted regions while the second pattern adds secondary detailing, achieving complex aesthetic effects through nested structural relationships.
Solution Approach 2:
The embossing process is segmented into multiple distinct patterns applied to different plies. The first ply receives a first embossing pattern while the second ply receives a second embossing pattern, allowing independent optimization of aesthetic and functional properties through segmented pattern design.
2Shape
If embossing surface area is increased to improve aesthetics, then decorative quality is enhanced, but bond strength between plies deteriorates
Solution Approach 1:
Different embossing patterns are applied to different plies with distinct characteristics. The first ply's embossing pattern is optimized for aesthetic appearance while the second ply's pattern is optimized for bond strength, allowing each region to have locally optimized properties rather than uniform embossing throughout.
Solution Approach 2:
The patent applies embossing to only a portion of the total web surface area rather than complete coverage. By limiting embossing to specific regions where aesthetic enhancement is most beneficial, the overall bond strength is preserved while still achieving decorative quality in critical areas.
3Volume of moving object
If pillow regions are created to increase thickness, then bulk is improved, but structural stability deteriorates due to pillow collapse
Solution Approach 1:
Nested embossing creates interlocking quilted regions where inner patterns are supported by outer patterns. This nested structural relationship provides mechanical support to the pillow regions, preventing collapse while maintaining increased thickness and bulk throughout the product lifecycle.
Data Source
AI summary
An exemplary through-air-dried web substrate having a surface thereof is described. The surface has a surface area and an emboss pattern disposed thereon. The emboss pattern has a surface area defined by a perimeter circumscribing the emboss pattern. The surface area of the emboss pattern ranges from about 5 percent to about 40 percent of the surface area of the through-air-dried web substrate.