Integrated Cooling Shaping Device for Continuous Material
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Solution Overview
Problem
The processing of substantially flat continuous materials, such as polylactic acid webs, in aerosol generating articles or smoking articles is hindered by electrostatic charging and heating issues, leading to irregular folding and reduced reproducibility due to low glass transition or melting temperatures, causing tackiness and potential apparatus blockages.
Innovation Solution
An apparatus comprising a shaping device integrated with a cooling device to immediately cool the gathered material, using cooling elements like Peltier elements or cooling mediums like air, to prevent overheating and maintain material stability, thereby reducing friction and maintaining material integrity during processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the substantially flat continuous material is gathered in a shaping device, then the material is formed into the desired shape, but the material is heated due to friction and processing, causing tackiness, irregular folding, and reduced reproducibility
Solution Approach 1:
The cooling device is integrated into the shaping device, combining the shaping function with the cooling function in a single unit. This allows immediate cooling of the material while it is being gathered and shaped, preventing heat accumulation without requiring a separate cooling station or process step.
Solution Approach 2:
Cooling action is applied preliminarily during the gathering process itself, rather than after shaping is complete. The cooling device acts on the material while it is being formed, preventing thermal effects before they can cause damage.
2Manufacturing precision
If the material is cooled immediately during gathering, then heat-induced changes are prevented and reproducibility is improved, but the device complexity increases due to integration of cooling and shaping functions
Solution Approach 1:
The shaping device is designed to perform multiple functions: both shaping/gathering the material and cooling it. This multi-functionality reduces the need for separate dedicated cooling equipment, balancing the increase in device complexity with the benefit of improved manufacturing precision.
Solution Approach 2:
By merging the cooling device with the shaping device, the patent creates an integrated system that achieves immediate cooling during gathering. This integration improves reproducibility while keeping the overall system compact and functional.
3Speed
If the material temperature is not controlled, then the processing speed can be maintained, but the material may rupture or stick to apparatus parts due to overheating
Solution Approach 1:
The cooling action is applied continuously during the gathering process, not intermittently. This continuous cooling ensures that temperature is controlled throughout the entire shaping operation, maintaining material integrity while allowing sustained processing speed without thermal damage.
Solution Approach 2:
The cooling device applies a preliminary counter-action to the heating effect generated during gathering. By cooling the material during the gathering process itself, the patent prevents the harmful thermal effects before they can compromise material integrity or cause apparatus blockages.
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 immediate cooling of the gathered material prevents heat-induced changes, ensuring reproducible product formation, reducing machine stops, and preventing material rupture, thus enhancing the production efficiency and quality of aerosol generating articles.
Implementation Method 1
a cooling device for cooling the gathered continuous material
Implementation Method 2
using cooling elements like Peltier elements
Data Source
AI summary
The apparatus for shaping substantially flat continuous material comprises a shaping device for gathering substantially flat continuous material transverse to a longitudinal direction of the continuous material to form a gathered continuous material. The apparatus further comprises a cooling device for cooling the gathered continuous material. The shaping device and the cooling device are combined such as to immediately cool the gathered continuous material.