Embossing-Laminating Device Electrostatic Adhesive Application
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Solution Overview
Problem
Current embossing-laminating devices for cellulose ply products are costly, require precise setup, and experience downtime due to the complexity of adhesive distributing assemblies and supply systems, which also necessitate frequent cleaning and reconfiguration for maintenance.
Innovation Solution
An embossing-laminating device utilizing electrostatic spray guns to apply adhesive to the embossments of cellulose webs, with a storage system that provides a positive electrostatic charge to the adhesive, encapsulated in a pressure-activated carrier material, reducing unwanted adhesive application and simplifying cleanup, and allowing for adjustable adhesive volume based on web speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional adhesive distributing assemblies with enclosed chambers and gravure rollers are used, then adhesive application precision is improved, but device complexity and manufacturing cost increase significantly
Solution Approach 1:
The patent replaces the complex mechanical adhesive distributing assembly (enclosed chamber, gravure roller, applicator roller) with an electrostatic spray system. The electrostatic spray gun uses electrical fields to control adhesive deposition, substituting mechanical complexity with electrical control while achieving precise adhesive application to embossment surfaces.
Solution Approach 2:
The patent changes the state of adhesive from liquid in a mechanical delivery system to electrostatically charged particles or droplets. By applying electrostatic charge to the adhesive and controlling its deposition through electrical fields, the system achieves precise application without the mechanical complexity of traditional distributing assemblies.
2Reliability
If traditional adhesive supply systems with tanks, pumps, and piping are used, then adhesive delivery is reliable, but maintenance downtime increases due to frequent cleaning requirements
Solution Approach 1:
The patent extracts the adhesive from the complex enclosed supply system and delivers it directly through electrostatic spray guns. This eliminates the enclosed chamber, gravure roller, and associated piping that require frequent cleaning, while maintaining reliable adhesive delivery through direct electrostatic application to the web.
Solution Approach 2:
The electrostatic spray system uses a simpler, more easily cleaned or replaced adhesive delivery mechanism compared to the enclosed chamber system. The spray guns can be quickly cleaned or replaced without disassembling complex mechanical assemblies, reducing maintenance downtime.
3Manufacturing precision
If traditional adhesive application methods are used, then adhesive is applied to embossment surfaces, but adhesive waste increases due to application to non-embossment areas
Solution Approach 1:
The electrostatic spray system uses electrical fields to guide charged adhesive particles or droplets precisely to the embossment surfaces. This substitution of mechanical spray or roller application with electrostatic control enables selective adhesive deposition only where needed, reducing waste on non-embossment areas.
Solution Approach 2:
The electrostatic spray system can be controlled to deposit adhesive only on embossment surfaces by adjusting electrical field parameters. The system responds to the presence and shape of embossments, directing adhesive charge to match the embossment pattern and minimizing waste.
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 solution reduces operational costs, minimizes downtime, and enhances the efficiency of adhesive application, ensuring consistent quality and ease of maintenance by using electrostatically charged adhesive in a pressure-activated carrier, improving the production process for cellulose ply products.
Implementation Method 1
spray guns to direct adhesive, with a storage system that provides a positive electrostatic charge to the adhesive
Implementation Method 2
utilizing electrostatic spray guns to apply adhesive to the embossments of cellulose webs
Implementation Method 3
encapsulated in a pressure-activated carrier material
Data Source
AI summary
A method for producing a laminated embossed web includes the steps of: (a) providing a first web and at least a further web, (b) embossing the first web with a first pattern of embossments, each embossment comprising a top and a side, (c) providing an adhesive with an electrostatic charge, (d) directing the adhesive to the tops of the embossments, and (e) combining the webs.