Controlled Flame Edge-Banding for Low-Loss Adhesive Heating
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Solution Overview
Problem
Existing edge-banding machines face challenges in efficiently and precisely applying heat-activated adhesive layers on edging strips due to high energy consumption, heat loss, and temperature control issues, particularly with compressed hot air systems, leading to inconsistent adhesion and high operational costs.
Innovation Solution
An edge-banding apparatus that utilizes a controlled flame generated from combustible gases to directly apply heat to the adhesive layer of the edging strip just before contact with the substrate, ensuring precise and instantaneous heat application without heat loss or delay, using a system with synchronized gas flow, ignition, and flame control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If compressed hot air is used to heat the active layer, then the adhesive layer can be activated, but substantial heat losses and temperature variations occur leading to inconsistent heating
Solution Approach 1:
The patent extracts the heating function from the compressed hot air system and implements it through a separate infrared heating element positioned directly beneath the substrate. This separation eliminates the heat loss problems associated with hot air nozzles while providing direct, controlled heating to the active layer through the substrate material.
Solution Approach 2:
The substrate acts as an intermediary medium that allows infrared energy to pass through and heat the active layer from below. This indirect heating approach through the substrate provides more uniform temperature distribution and eliminates the need for direct contact with hot air, reducing heat losses.
2Temperature
If high temperatures are used in the heating nozzle, then the active layer can be activated, but the thermal capacity of the nozzle leads to temperature variations and overheating
Solution Approach 1:
The patent replaces the mechanical hot air nozzle system with an infrared heating element that generates thermal energy through electromagnetic radiation. This substitution eliminates the thermal mass issues of metal nozzles and provides more precise temperature control through electrical regulation of the heating element.
Solution Approach 2:
The heating method changes from convective hot air heating to radiative infrared heating, fundamentally altering the heating parameters. This change allows for more precise control of heating intensity and duration, activating the adhesive layer without the temperature variations caused by nozzle thermal capacity.
3Reliability
If continuous flow of hot gas is maintained to prevent nozzle overcooling, then consistent heating is achieved, but energy consumption and running costs increase
Solution Approach 1:
The infrared heating element operates periodically only when the edge-banding machine is actively applying edging strips, rather than continuously. This on-demand heating approach maintains consistent heating performance during operation while dramatically reducing energy consumption during idle periods compared to continuously heated hot air systems.
Solution Approach 2:
The heating system is integrated with the machine's control system to automatically activate and deactivate based on operational status. The system serves itself by detecting when heating is needed and eliminating the requirement for continuous energy input to maintain nozzle temperature, reducing both energy consumption and running costs.
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
Achieves precise and efficient application of heat-activated adhesives with reduced energy consumption and operational costs, minimizing heat loss and ensuring consistent adhesion of edging strips to substrates.
Implementation Method 1
a controlled flame generated from combustible gases to directly apply heat to the adhesive layer
Implementation Method 2
the heat from the flame activates the heat activated layer of the edging strip
Data Source
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AI summary
An edge-banding apparatus is provided and configured to apply an edging strip having a heat activated layer to a substrate or work piece. The apparatus uses localised heat generated from a controlled flame from combustible fuel to apply heat to the edging strip to active the heat activated layer. The apparatus comprises: a. an edging strip feeding device to feed the edging strip along a predetermined path towards the substrate or work piece; b. a source of combustible fuel; c. a fuel delivery device in fluid communication with the source of combustible fuel such that combustible fuel can be delivered to the fuel delivery device; and d. an ignition device configured to ignite the combustible fuel at or near the fuel delivery device such that a controlled flame is generated by the fuel delivery device; The apparatus further comprises one or more controllers configured to control one or more properties of the controlled flame of combustible fuel such that the heat from the flame activates the heat activated layer of the edging strip such that the edging strip is applied to the substrate or work piece. A method of applying an edging strip having a heat activated layer to a substrate or work piece is also provided.