Multilayer Tube With Selective Glue Zones For Clean Perforation
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Solution Overview
Problem
Existing multilayer tube manufacturing processes face challenges with adhesive residues and dirt accumulation during subsequent processing, which can lead to poor-quality products.
Innovation Solution
The solution involves creating a multilayer tube with reduced or zero glue zones in specific areas, allowing for controlled perforations without producing dirt and adhesive residues. This is achieved through a machine and method that apply adhesive selectively and enable precise perforation in designated zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If adhesive material is applied between the layers making up the tube, then the layers are joined together to form a stable multilayer structure, but the adhesive prevents subsequent processing and causes dirt accumulation
Solution Approach 1:
The patent applies adhesive only in specific localized zones rather than uniformly across all overlapping areas. The glue is applied in discrete points or lines at the edges of overlapping zones, leaving other areas adhesive-free. This localized application maintains structural stability where needed while preserving processing capability in adhesive-free zones.
Solution Approach 2:
The overlapping area is divided into distinct zones: glued zones for structural bonding and unglued zones for subsequent processing. This segmentation allows different functional requirements to be met in different areas, enabling both stable layer joining and effective perforation operations without dirt accumulation.
2Strength
If adhesive is applied in all overlapping zones, then strong bonding is achieved, but dirt and glue residues accumulate during perforation processes
Solution Approach 1:
Adhesive is applied selectively in specific locations within overlapping zones rather than uniformly. The bonding strength is maintained at critical locations (edges and structural points) while other areas remain free of adhesive to prevent dirt and residue accumulation during subsequent processing.
Solution Approach 2:
The adhesive is extracted or removed from areas where it would cause harmful effects. By eliminating glue from certain zones of the overlapping area, the patent prevents dirt accumulation and facilitates clean perforation processes while maintaining bonding strength in essential areas.
3Reliability
If uniform glue application is used across overlapping areas, then consistent bonding is achieved, but versatility for different processing operations is reduced
Solution Approach 1:
Different zones of the overlapping area have different adhesive characteristics. Some zones have full adhesive coverage for consistent bonding, while other zones are adhesive-free or have reduced adhesive for specific processing operations. This local differentiation maintains bonding reliability while enhancing processing versatility.
Solution Approach 2:
The overlapping area is segmented into functionally distinct zones with different adhesive applications. This segmentation enables the tube to accommodate various processing operations (perforation, printing, coating) in adhesive-free zones while maintaining structural integrity in glued zones.
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 approach results in high-quality multilayer tubes that can be effectively perforated without adhesive residue issues, enhancing product quality and process efficiency.
Implementation Method 1
applying an adhesive material between the layers making up the tube
Data Source
Figure 1~3
Figure 3A~3D
Figure 4~6
AI summary
This invention relates to a multilayer tube (1) having an internally hollow, cylindrical shape extending round a longitudinal axis (X) and having, in cross section transverse to the longitudinal axis (X), a multilayer thickness defined by at least two layers (2, 3, 4) superposed at respective overlapping areas (5). The overlapping areas (5) are glued to each other at first glue zones (5a) and have second, reduced or zero glue zones (5b) configured and/or intended to receive a plurality of perforations (6).