Double Layer Tube Offset Edges Adhesive Thickness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-layer tubes in the tobacco processing industry lack stability and quality due to inadequate material thickness and adhesive application, leading to suboptimal roundness and seam integrity.
Innovation Solution
A double-layer tube is produced using strips of varying widths with a specific thickness range (38 µm to 160 µm) and adhesive application (10 µm to 80 µm) where the edges are circumferentially offset, allowing for full-surface or almost full-surface gluing, enhancing stability and roundness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If material strips with thickness in the range of 38 µm to 160 µm are used with positioning adhesive applied at an application thickness of 10 µm to 80 µm, then the stability and roundness of the double-layered tube are significantly improved, but the manufacturing process becomes more complex due to precise thickness control requirements
Solution Approach 1:
The patent specifies precise parameter ranges for material strip thickness (38 µm to 160 µm) and adhesive application thickness (10 µm to 80 µm) to optimize tube quality. By controlling these parameters within defined ranges, the invention achieves predictable roundness and high manufacturing precision while managing the complexity through standardized specifications.
Solution Approach 2:
The positioning adhesive is applied in advance at a controlled application thickness before the material strips are joined. This preliminary action ensures proper bonding and alignment, allowing the strips to be positioned accurately and maintain roundness during subsequent handling and drying processes.
2Reliability
If positioning adhesive is applied as full-surface or nearly full-surface bonding with application thickness of 10 µm to 80 µm, then the seam integrity and stability are enhanced, but the amount of adhesive material required increases
Solution Approach 1:
The patent applies positioning adhesive as full-surface or nearly full-surface bonding rather than localized spots. This approach distributes the adhesive uniformly across the bonding surface, ensuring consistent seam integrity and reliability throughout the entire joint area, while the specified application thickness range (10 µm to 80 µm) optimizes material usage.
Solution Approach 2:
By controlling the adhesive application thickness within the range of 10 µm to 80 µm, the invention balances seam integrity with material consumption. The precise parameter control ensures sufficient bonding strength while managing the quantity of adhesive material required for full-surface coverage.
3Manufacturing precision
If the butt edges of the first and second material strips are offset from each other in the circumferential direction, then the roundness and quality of the tube are significantly improved, but the alignment precision required during manufacturing increases
Solution Approach 1:
The patent deliberately offsets the butt edges of the first and second material strips from each other in the circumferential direction, creating an asymmetric configuration. This offset arrangement prevents the formation of sharp corners and improves the roundness of the double-layered tube, transforming a potential defect into a quality-enhancing feature.
Solution Approach 2:
The invention specifies precise thickness ranges for the material strips (38 µm to 160 µm) and adhesive application (10 µm to 80 µm) to compensate for the offset edge configuration. These parameter controls ensure that the offset butt edges do not compromise structural integrity while maintaining high roundness and manufacturing precision.
4Strength
If material strip thickness is increased to improve stability, then the tube gains better mechanical strength, but the adhesive application thickness must also be increased to ensure proper bonding
Solution Approach 1:
The patent establishes correlated parameter ranges: material strip thickness (38 µm to 160 µm) and adhesive application thickness (10 µm to 80 µm). These parameters are optimized together to ensure that as material thickness increases for greater mechanical strength, the adhesive application thickness is appropriately adjusted to maintain effective bonding without excessive material consumption.
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 described method results in high-quality double-layer tubes with improved stability and roundness, as the offset edges and precise adhesive application ensure a strong and consistent bond, surpassing previous technologies in terms of quality and performance.
Implementation Method 1
a positioning adhesive is provided between the first and the second material strip section as a full-surface or nearly full-surface bonding with an application thickness of 10 μm to 80 μm
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a double-layered tube (10) for the tobacco processing industry and a method for manufacturing such a tube. It is provided that, when applying a positioning adhesive (17), this is applied with a thickness of 10 µm to 80 µm.