Glue Application Roller with Varying Depression Volumes
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Solution Overview
Problem
Conventional glue applicator rollers in the tobacco processing industry face issues with excessive glue application, leading to knife contamination and frequent cleaning, which results in machine downtimes, and also compromise the strength of the glue connection between tipping paper and tobacco rods due to reduced glue layers.
Innovation Solution
A glue applicator roller with varying depression volumes per area, produced using high-energy beam processing, features reduced depression volumes in cutting areas to minimize glue residue and increased volumes in connection areas for enhanced adhesion, achieved through different indentation sizes, numbers, and arrangements on the roller's surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the glue layer is reduced to minimize knife contamination, then knife cleaning frequency is reduced, but the strength of the glue connection between tipping paper and tobacco rod is impaired
Solution Approach 1:
The roller surface is divided into different zones with varying depression volumes: zones with smaller depression volumes in cutting areas to reduce glue contamination, and zones with larger depression volumes in connection areas to ensure strong glue bonds. This local differentiation allows simultaneous optimization of both knife cleanliness and connection strength.
2Ease of manufacture
If uniform depression volumes are used across the roller surface, then manufacturing is simplified, but excessive glue is applied in cutting areas leading to frequent knife cleaning and machine downtime
Solution Approach 1:
The roller surface features non-uniform depression volumes tailored to different functional zones: reduced depression volumes in cutting areas minimize glue residue and cleaning requirements, while maintained or increased depression volumes in connection areas ensure adequate glue supply for strong bonds, thereby reducing overall machine downtime.
3Strength
If increased depression volume is used in connection areas, then glue connection strength is enhanced, but overall glue application increases leading to more contamination in cutting areas
Solution Approach 1:
The roller is designed with spatially differentiated depression volumes that concentrate glue application in connection areas while minimizing it in cutting areas. This localized glue distribution ensures strong connections where needed without excessive glue reaching the cutting knives, thus eliminating the trade-off between connection strength and contamination.
4Manufacturing precision
If conventional machining processes are used to produce depressions, then manufacturing precision can be achieved, but the process is laborious and expensive
Solution Approach 1:
Conventional mechanical machining processes are replaced with laser technology to create the depression pattern on the roller surface. The laser beam can precisely form complex depression geometries with controlled volumes without the labor-intensive setup and tooling changes required by mechanical machining, thereby reducing both manufacturing time and cost while maintaining precision.
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
This solution reduces knife contamination and machine downtimes while ensuring a strong glue connection between tobacco rod and filter by optimizing glue distribution, maintaining manufacturing efficiency and quality.
Implementation Method 1
irradiating the outer surface of the glue applicator roller using a high-energy beam generated by a beam generator... Preferably, this can be a laser beam generated by a laser
Data Source
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AI summary
The glue application roller (15) has recesses for retaining and transporting of glue to a lateral surface. The lateral surface of the glue application roller has areas with recesses and different recess volume per surface. One for the areas is provided with reduced recess volume per surface. Independent claims are also included for the following: (1) a method for manufacturing a bar shaped tobacco product; and (2) a bar shaped tobacco product, which has a bar shaped part.