Toilet paper
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Solution Overview
Problem
Toilet paper for shower toilets faces challenges in providing a thickness feeling of security, softness, and water disintegrability while being environmentally friendly, as conventional methods using chlorine-bleached pulp result in hardness, surface roughness, and reduced water disintegrability.
Innovation Solution
Toilet paper with 80-100% softwood kraft pulp subjected to oxygen pulping, embossed with a specific pattern, and containing a cationic fatty acid amide-based softener, achieving a basis weight of 12.5-15.5 g/m² per ply and a thickness of 120-150 µm, ensuring rapid water disintegrability and softness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional toilet paper is made from virgin wood pulp, then it has good absorbency and softness, but it causes deforestation and environmental degradation
Solution Approach 1:
The patent changes the material composition parameters by using recycled paper fibers instead of virgin wood pulp, and adjusts processing parameters to achieve adequate absorbency and softness despite the recycled material's inherent limitations
Solution Approach 2:
The patent creates a composite structure by combining recycled paper fibers with binding agents and potentially other additives to achieve the necessary functional properties that neither component could provide alone
2Object-affected harmful factors
If recycled paper is used to make toilet paper, then environmental impact is reduced, but the paper lacks sufficient absorbency and softness
Solution Approach 1:
The patent applies local quality enhancement by treating specific regions or aspects of the recycled paper structure to improve absorbency and softness in those areas, rather than uniformly treating the entire material
Solution Approach 2:
The patent modifies physical and chemical parameters of the recycled paper through processing treatments to enhance its functional properties for toilet paper applications
3Reliability
If toilet paper is made with adequate absorbency and softness, then it requires more material and processing, but this increases manufacturing complexity and cost
Solution Approach 1:
The patent performs preliminary preparation of recycled fibers before final paper formation, pre-treating them to enhance their absorbency and softness characteristics before they are combined into the final product structure
Solution Approach 2:
The patent optimizes processing parameters to achieve the desired functional properties with minimal additional complexity, finding the most efficient parameter settings for fiber preparation, paper formation, and finishing
Data Source
Figure 1(A)~1(B)
Figure 2
Figure 3
AI summary
Provided is toilet paper which is excellent in thickness feeling and water disintegrability, has sufficient softness, gives a sense of security for human bodies during use, and is environmentally friendly. Toilet paper has three or four plies. The basis weight is 12.5 to 15.5 g/m2 per ply. 80 to 100 mass% of fiber is softwood kraft pulp that is subjected to oxygen pulping and is not bleached with chlorine. The toilet paper contains a cationic fatty acid amide-based softener, and has a paper thickness of 120 to 150 µm per ply, a paper thickness of 400 to 600 µm as a whole of the toilet paper, and a water disintegrability of 10 seconds or less.