Package comprising a stack of absorbent tissue paper material and a packaging
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Solution Overview
Problem
Conventional methods for packaging absorbent tissue paper stacks result in high bulk volumes due to air pockets, leading to increased transportation costs and frequent dispenser refilling, while high compression to reduce bulk impairs tissue quality and causes springback forces that complicate manufacturing and storage.
Innovation Solution
A packaging system that maintains a stack of absorbent tissue paper with a selected packing density of 0.25 to 0.65 kg/dm3, achieved by temporarily compressing the stack to a lower height before packaging, reducing springback force and allowing conventional materials to maintain the stack's density without quality loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If high compression is applied to reduce bulk volume, then transportation and storage efficiency is improved, but tissue quality deteriorates and springback force increases
Solution Approach 1:
The patent applies controlled compression parameters (pressure, temperature, time) to achieve the desired bulk reduction while maintaining tissue quality. By optimizing the compression parameters within specific ranges, the process achieves volume reduction without causing excessive springback force or deteriorating tissue properties.
2Volume of moving object
If high compression is applied to reduce bulk volume, then transportation and storage efficiency is improved, but manufacturing complexity increases due to springback force
Solution Approach 1:
The patent applies preliminary compression before packaging, reducing the bulk volume of the tissue stack in advance. This preliminary action minimizes the springback force that would otherwise complicate the packaging process, allowing for simpler packaging equipment and procedures while achieving the desired compact form.
Solution Approach 2:
By controlling compression parameters (pressure, temperature, time) within optimized ranges, the patent achieves bulk reduction while limiting springback force to manageable levels. This parameter optimization simplifies the subsequent packaging process and reduces manufacturing complexity.
3Reliability
If conventional packaging is used without compression, then tissue quality is maintained, but transportation cost increases due to high bulk volume
Solution Approach 1:
The patent optimizes compression parameters to achieve the minimum necessary compression for cost-effective transportation while maintaining tissue quality. By carefully controlling pressure, temperature, and time parameters, the process achieves bulk reduction without excessive compression that would compromise tissue properties.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables more efficient transportation and storage by reducing bulk and springback force, allowing for easier packaging and maintaining tissue quality, thus reducing costs and improving manufacturing efficiency.
Implementation Method 1
the packaging encircling said stack so as to maintain said stack in a compressed condition with said selected packing density
Implementation Method 2
a first portion of said stack comprises a first absorbent tissue paper material... a second portion of said stack comprises a second absorbent tissue paper material
Data Source
AI summary
A package including a stack of absorbent tissue paper material and a packaging, wherein, in the stack, the tissue material forms panels having a length, and a width perpendicular to the length, the panels being piled on top of each other to form a height extending between a first end surface and a second end surface of the stack; the absorbent tissue paper material including at least a dry crepe material, the stack, when in the package, having a selected packing density D0 of 0.25 to 0.65 kg/dm3, and exerting a force along the height of the stack towards the packaging, the packaging encircling the stack so as to maintain the stack in a compressed condition with the selected packing density D0.