Deep-Nested Embossed Tissue Paper Structure
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Solution Overview
Problem
Deep nested embossed tissue paper products often result in reduced softness and absorbency, despite improved aesthetic appeal, due to high embossment frequency stressing the fibrous structure beyond its plastic deformation point, leading to a rigid three-dimensional structure and collapsed void space.
Innovation Solution
The development of embossed tissue-towel paper products with a total embossed area of 15% or less and an average embossment height of at least 650 μm, featuring an E factor between 0.0150 to 1.0000 inches^4 per number of embossments, which balances embossing to maintain a stable structure without over-stressing the fibrous substrate, thereby enhancing softness and absorbency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If deep nested embossing with high embossment frequency is applied, then aesthetic appearance is improved, but softness and absorbency deteriorate due to fibrous structure stress beyond plastic deformation point
Solution Approach 1:
The patent applies parameter changes by controlling the embossment frequency and total embossed area within specific ranges (0.05 to 0.20 inches⁴ per embossment and 10-20% total embossed area). This optimizes the embossing parameters to achieve deep nested patterns while maintaining the fibrous structure's plastic deformation capacity, thereby preserving softness and absorbency while improving aesthetic appearance.
Solution Approach 2:
The patent uses partial action by limiting the total embossed area to 10-20% of the total surface area, rather than applying embossing across the entire surface. This partial embossing approach creates the desired aesthetic deep nested pattern while leaving sufficient unembossed areas to maintain the overall softness and absorbency of the tissue product.
2Shape
If deep nested embossing is applied, then aesthetic impression is improved, but tissue softness and absorbency are reduced
Solution Approach 1:
The patent optimizes embossing parameters including embossment frequency (0.05 to 0.20 inches⁴ per embossment) and total embossed area (10-20%). These controlled parameter changes enable the creation of aesthetically pleasing deep nested patterns while preventing excessive stress on the fibrous structure, thereby maintaining tissue softness and absorbency.
Solution Approach 2:
By applying embossing to only 10-20% of the total surface area rather than the entire surface, the patent achieves partial embossing. This creates attractive deep nested visual patterns while preserving sufficient unembossed areas that maintain the tissue's inherent softness and absorbency properties.
3Productivity
If high embossment frequency is used, then embossing efficiency is improved, but fibrous structure is over-stressed leading to rigid three-dimensional structure
Solution Approach 1:
The patent optimizes embossing parameters by controlling embossment frequency within 0.05 to 0.20 inches⁴ per embossment and limiting total embossed area to 10-20%. This parameter optimization achieves efficient embossing production while preventing over-stressing of the fibrous structure, maintaining its stability and preventing the formation of a rigid three-dimensional structure.
Solution Approach 2:
The patent applies partial embossing covering 10-20% of the total surface area, which provides sufficient embossing efficiency for production while leaving the majority of the fibrous structure unembossed and intact. This preserves the natural stability and flexibility of the fibrous composition.
4Shape
If total embossed area is increased, then embossing depth is improved, but absorbent capacity is reduced due to collapsed void space
Solution Approach 1:
The patent optimizes the total embossed area parameter within 10-20% of the total surface area. This controlled parameter change achieves sufficient embossing depth for aesthetic purposes while preventing excessive embossing that would collapse the void spaces necessary for absorbency, thereby maintaining optimal absorbent capacity.
Solution Approach 2:
By limiting embossing to 10-20% of the total surface area, the patent creates deep nested patterns in specific regions while leaving the majority of the surface with intact void spaces. This partial embossing approach maintains the three-dimensional porous structure necessary for high absorbent capacity while achieving desired embossing depth in the embossed regions.
Data Source
AI summary
The present invention relates to embossed tissue-towel paper products comprising one or more plies of tissue paper wherein at least one of the plies of tissue paper comprises a plurality of embossments wherein the at least one embossed plies have a total embossed area less than or equal to about 15% and an average embossment height of at least about 650 μm and E factor of between about 0.0150 to about 1.0000 inches4 per number of embossments.