Double Layer Tube Adhesive Bonding Stability
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Solution Overview
Problem
The tobacco processing industry faces challenges in producing high-quality multi-layered tubes with stability and even smoke distribution, as existing methods result in inconsistent tube quality and stability.
Innovation Solution
A double-layered tube is created using a first and second material strip section, where the edges are abutted with a full-surface or almost full-surface adhesive coating, and the strips are wound circularly or ovally, with the second strip section on the outside, ensuring predictable roundness and stability. The device includes a material strip feeding, cutting, gluing, merging, and formatting process to produce tubular strands which are then cut into double-layered tubes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multi-walled paper tubes are used to provide stability, then the tube stability is improved, but the manufacturing precision and quality consistency deteriorate
Solution Approach 1:
The tube is divided into two separate material strip sections (inner and outer layers) that are manufactured and assembled independently. This segmentation allows each layer to be optimized for stability while the controlled assembly process ensures manufacturing precision and quality consistency through defined joining parameters.
Solution Approach 2:
The inner material strip section is nested within the outer material strip section to form a double-layered tube structure. This nested configuration provides enhanced stability while maintaining manufacturing precision through controlled positioning and joining of the concentric layers.
2Shape
If edges are butted together to form circular cross-section, then the roundness is improved, but the manufacturing complexity increases
Solution Approach 1:
The material strip sections are pre-formed with abutting edges designed to create circular cross-sections. This preliminary preparation of the strips with predetermined edge configurations simplifies the final assembly process while ensuring consistent roundness, reducing manufacturing complexity despite the precision requirements.
Solution Approach 2:
Two different material strip sections are combined to form a composite double-layered tube structure. The composite construction allows each material to be optimized for its specific function while the overall structure achieves improved roundness through the controlled assembly of the layered components.
3Strength
If full-surface adhesive coating is applied between layers, then the bonding strength is improved, but the production time increases
Solution Approach 1:
The adhesive application process is merged with the assembly process by applying the adhesive coating directly to one material strip section before joining. This integration of coating and assembly operations achieves full-surface bonding strength while minimizing production time through continuous processing without separate coating and assembly steps.
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 method significantly improves the quality and stability of the double-layered tubes by ensuring consistent adhesive coverage and alignment, resulting in tubes with enhanced roundness and stability, allowing for faster production and improved performance in smoke distribution.
Implementation Method 1
an adhesive is provided as a full-surface or almost full-surface gluing between the first and the second material strip section
Data Source
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AI summary
The invention relates to a double-layered tube (10) for the tobacco processing industry, as well as a device for manufacturing such a tube and a method for manufacturing such a tube.The tube (10) according to the invention is made from a first and a second material strip section (11, 12), wherein the first material strip section (11) has a first width and the second material strip section (12) has a second width, wherein the first and the second material strip sections (11, 12) are wound around each other such that the first material strip section (11) has a circular or oval cross-section and the edges (13, 14) defining the first width are butted together, wherein the second material strip section (12) has a circular or oval cross-section and the edges (15, 16) defining the second width are butted together, wherein the second material strip section (12) is arranged outside around the first material strip section (11), and wherein an adhesive (17, 18) is provided between the first and the second material strip sections (11, 12).