Package comprising a stack of absorbent tissue paper material and a packaging
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Solution Overview
Problem
Existing packages of absorbent tissue paper material face challenges in reducing bulk during transportation and storage due to high springback forces, which complicate packaging and manufacturing processes, and can impair the quality of the tissue paper by applying high compressive pressures.
Innovation Solution
A package design that compresses tissue paper material to a temporary height before packaging, reducing the springback force and allowing for higher density packaging using conventional materials and methods, maintaining the quality of the tissue paper while enabling efficient packaging and manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If high compressive pressures are applied to reduce stack volume, then packing density is improved, but tissue paper quality deteriorates and springback force increases
Solution Approach 1:
The stack is pre-compressed to a temporary height before packaging, reducing the springback force that would otherwise occur after packaging. This preliminary compression action allows the stack to be packaged in a compressed state without requiring excessive packaging strength, thereby maintaining tissue quality while achieving reduced volume.
Solution Approach 2:
The invention changes the height parameter of the stack by compressing it to a temporary height H1 = c1 × H0 (where c1 is between 0.30 and 0.95) before packaging. This parameter change reduces the stack volume and springback force while maintaining acceptable tissue quality through controlled compression within specific height ratios.
2Volume of stationary object
If high compressive pressures are applied to reduce stack volume, then packing density is improved, but manufacturing complexity increases due to springback force
Solution Approach 1:
By pre-compressing the stack to a temporary height before packaging, the invention reduces the springback force that would complicate the packaging process. This allows conventional packaging materials and methods to be used effectively, simplifying manufacturing while achieving high packing density.
3Productivity
If high compressive pressures are applied to reduce stack volume, then transportation efficiency is improved, but tissue paper absorbency deteriorates
Solution Approach 1:
The invention achieves volume reduction by changing the height parameter to a temporary height H1 = c1 × H0 (where c1 is between 0.30 and 0.95), rather than applying extreme compression. This controlled parameter change reduces stack volume for efficient transportation while maintaining the compression level needed to preserve tissue absorbency properties.
4Volume of stationary object
If stack height is reduced to increase packing density, then bulk reduction is achieved, but springback force complicates packaging
Solution Approach 1:
The stack is pre-compressed to a temporary height H1 = c1 × H0 before packaging is applied. This preliminary action reduces the springback force that would otherwise resist packaging application, making the manufacturing process easier while achieving the desired bulk reduction and packing density.
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 effectively reduces the springback force, allowing for higher density packaging with conventional materials and methods, maintaining tissue paper quality and reducing bulk during transportation and storage.
Implementation Method 1
a compressing unit (310) for compressing the stack (10) to a temporary height H1
Implementation Method 2
the outermost panel surfaces of the stacks will exert a force, which may be referred to as a springback force, on the packaging when inside the package
Data Source
Figure 1
Figure 2a~3c
Figure 4a~5b
AI summary
The present disclosure relates to a package (100)comprising a stack (10) of absorbent tissue paper material and a packaging(20), wherein, in said stack(10), the tissue material forms panels having a length (L), and a width (W) perpendicular to said length (L), said panels being piled on top of each other to form a height (H) extending between a first end surface and a second end surface of the stack;the absorbent tissue paper material comprising at least a dry crepe material,the stack (10), when in said package(100), having a selected packing density D0 of 0.25 to 0.65 kg/dm 3, and exerting a force along the height (H) of said stack(10)towards the packaging(20), the packaging (20) encircling said stack (10) so as to maintain said stack in a compressed condition with said selected packing density D0.