Composite Production Roller with Bernoulli Suction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing composite materials with powders, such as absorber particles, often result in open edges and leaks due to undefined mixing and powder distribution during the bonding process, leading to inefficiencies and reliability issues.
Innovation Solution
A device utilizing a partially rotatable roller with negative pressure areas and a system of supply and connection means to precisely apply and bond powders between material layers, employing the Bernoulli effect through Venturi nozzles for controlled suction and placement, ensuring closed chambers without powder escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If powder is combined with powdered hot-melt adhesive and sprinkled onto the web of material, then the powder can be applied to the material, but edge regions remain open and powder escapes at the outer edges
Solution Approach 1:
The roller is divided into multiple vacuum areas with different suction pressures, allowing selective and controlled powder application in different regions. This segmentation prevents powder escape at edges by creating defined containment zones while maintaining reliable sealing through differentiated pressure zones.
2Reliability
If powder is welded to sheet material by means of undefined application, then powder can be fixed to the material, but powder gets into the weld seam and causes leaks when it swells
Solution Approach 1:
Different regions of the roller are assigned different vacuum pressures: higher pressure in areas requiring strong powder fixation, and lower or zero pressure in areas near weld seams to prevent powder contamination. This local differentiation allows reliable powder fixation while avoiding weld seam contamination that causes leaks.
3Ease of manufacture
If undefined mixing of two powders is used, then the application process is simple, but edge regions remain open and the process lacks precision
Solution Approach 1:
The system uses dynamically adjustable vacuum pressures across different roller zones, allowing flexible control of powder distribution without complex mechanical mixing mechanisms. This dynamic pressure control achieves precise powder placement while maintaining ease of operation through simple pressure regulation.
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 enables reliable, efficient, and low-maintenance production of composite materials with precise powder distribution, preventing leaks and ensuring closed chambers, thereby enhancing operational efficiency and product quality.
Implementation Method 1
a means utilizing the Bernoulli effect, namely one or more Venturi nozzles, are manipulated directly or indirectly by means of transport, in particular transport nozzles, to transfer pressure from the area of the shaft, in particular to the negative pressure area
Implementation Method 2
the roller is subjected to negative pressure in predetermined areas in order to suck in the material layers and/or particles
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a device for producing a composite comprising particles and/or powders, in particular absorber particles and/or particles for active-ingredient release, and at least two material layers, comprising an at least partially rotatable roller having vacuum regions, a first and a second supply means, a means for feeding, and a means for connecting, wherein a first material layer is to be applied to the roller by means of the first supply means and vacuum is applied to the roller in predetermined regions by means of Bernoulli nozzles in order to suction the material layers and/or particles and/or powders.