Spike-Edged Rotating Disc for Uniform Adhesive Application
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Solution Overview
Problem
Existing methods for applying adhesion promoters using rotating discs suffer from rapid curing issues, leading to uneven distribution and system downtime, and are limited in using adhesives with solid fillers.
Innovation Solution
A rotating disc with 20 to 80 spikes on the edge, tapering to a point, is used to apply adhesion promoters, ensuring even distribution and allowing for the use of adhesives with solid fillers by controlling droplet formation and maintaining consistent application over a longer period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rotating disc with openings is used to apply adhesion promoter, then even application can be achieved, but the adhesive cures too quickly causing material buildup and uneven distribution
Solution Approach 1:
The rotating disc is segmented into multiple radial zones with different numbers of openings (20-80 points) arranged concentrically. This segmentation allows different regions of the disc to apply adhesive at different rates, compensating for the rapid curing of the adhesive material and maintaining uniform distribution over extended service life.
Solution Approach 2:
The disc is designed with dynamic characteristics where the rotational speed and the distribution of openings create a variable application pattern. The rapid rotation combined with the specific opening arrangement ensures that adhesive is applied uniformly despite the material's quick curing reaction, extending the operational duration without system stops.
2Adaptability or versatility
If conventional rotating discs are used, then adhesive application is possible, but solid fillers cannot be used in the adhesive
Solution Approach 1:
The disc surface is designed with specific local characteristics - the openings are distributed in a way that creates controlled flow paths for the adhesive. This local quality design allows the system to handle adhesives with solid fillers by ensuring proper flow and distribution, maintaining application consistency while expanding adhesive type flexibility.
3Productivity
If the disc operates for extended periods, then continuous production is achieved, but material buildup blocks holes and causes uncontrolled material ejection
Solution Approach 1:
The rotating disc design enables continuous operation without interruption. The specific opening arrangement and rotational mechanics ensure that adhesive is continuously applied uniformly to the substrate, maintaining productivity while preventing material buildup that would block holes and cause uncontrolled ejection, thereby preserving droplet size control throughout operation.
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 spike-edged disc ensures uniform and controlled application of adhesives, maintaining droplet size consistency and extending system operational life, preventing premature clogging and uneven distribution.
Implementation Method 1
The holes in the pane are blocked after a short time and the material is thrown over the edge of the pane in an uncontrolled manner. As a result, the distribution becomes uneven, above all more material is thrown into the edge areas. The droplets are then no longer formed only according to the principle of the disintegration of laminar liquid threads
Implementation Method 2
The droplets are then no longer formed only according to the principle of the disintegration of laminar liquid threads
Data Source
Figure 1~3
Figure 4a~4c
AI summary
The invention relates to a method for producing composite elements consisting of at least one top layer a) and a layer b) that is permanently fixed thereto, an adhesion promoter c) being applied between the top layer a) and the layer b) permanently fixed thereto. According to said method, the top layer a) is moved continuously and the adhesion promoter c) and the layer b) fixed thereto or the base materials of said layer is or are applied to the top layer one after the other. The adhesion promoter c) is applied using a rotating disc that is presented horizontally or at a slight deviation from the horizontal by up to 15°. The invention is characterised in that the edge of the rotating disc is provided with teeth.