Adhesive Dosing Unit with Closed Conveying Channel
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Solution Overview
Problem
Existing adhesive application devices are inefficient, messy, and require extensive cleaning due to the use of adhesive reservoirs and exposure to oxygen, leading to reduced adhesive quality and increased waste.
Innovation Solution
A device comprising a conveying unit, heating unit, and dosing unit that conveys solid adhesive, heats it, and applies it directly to a roller without oxygen exposure, using a longitudinal slot for precise application, with optional color addition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adhesive is stored in a reservoir and applied via spray device, then adhesive can be continuously supplied to workpiece, but adhesive quality deteriorates due to oxygen exposure and extensive cleaning is required
Solution Approach 1:
The patent extracts the harmful element (oxygen) from the adhesive application system by using a closed conveying channel that prevents oxygen contact with the adhesive throughout the entire process, from storage container through heating unit to application point, thereby maintaining adhesive quality while enabling continuous supply
Solution Approach 2:
The patent creates an inert environment by designing a closed conveying system isolated from atmospheric oxygen, where adhesive is transported and heated in an oxygen-free atmosphere, preventing oxidation and quality deterioration while maintaining continuous operation capability
2Productivity
If adhesive reservoir and batch processing are used, then adhesive application can be maintained, but waste increases due to cleaning requirements and energy consumption
Solution Approach 1:
The patent implements continuous adhesive processing where adhesive flows continuously from the storage container through the heating unit and conveying channel directly to the application point, eliminating batch processing interruptions and the associated cleaning waste, while maintaining steady adhesive application
Solution Approach 2:
The patent performs preliminary heating of the adhesive in a closed system before application, ensuring the adhesive is properly prepared and flowing smoothly before reaching the application point, which prevents adhesive waste from improper application and eliminates the need for subsequent cleaning
3Ease of operation
If adhesive is heated and softened in open system, then adhesive becomes applicable, but adhesive reacts undesirably with oxygen
Solution Approach 1:
The patent maintains an inert atmosphere throughout the entire adhesive processing path by using a closed conveying channel that isolates the adhesive from oxygen during heating and softening, enabling the adhesive to become properly applicable while preventing oxidation and harmful chemical reactions
4Reliability
If extensive adhesive cleaning is performed, then adhesive residue is removed, but energy consumption and time loss increase
Solution Approach 1:
The patent extracts the source of contamination by preventing oxygen contact with adhesive throughout the closed system, eliminating the oxidation reactions that create difficult-to-remove adhesive residues, thereby reducing both cleaning time and maintaining clean 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
Ensures efficient, clean, and uniform adhesive application with minimal waste and energy use, maintaining adhesive quality by avoiding oxygen exposure and batch processing.
Implementation Method 1
a heating unit (7) with a second inlet (9) and a second outlet (10a), and a first heating means (19, 20) for softening and/or liquefying the adhesive
Implementation Method 2
The first conveying means preferably applies a conveying pressure to the adhesive. The conveying pressure is preferably between 0.1 bar and 100 bar, particularly preferably between 1 bar and 30 bar
Data Source
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AI summary
The invention relates to a device for providing adhesive without an adhesive basin, with a conveyor unit, having a first conveying means, a first inlet and a first outlet, through which an adhesive present at least in part as a solid is conveyed, and with a heating unit, having a second inlet and a second outlet, and a first stimulant for softening and/or liquefying the adhesive. To provide a device working efficiently and cleanly and a method for providing adhesive, a dosing unit having a dosing inlet, a longitudinal slit and a roller is provided.