Composite Glue Hardener Ratio Control for Press Time Reduction
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Solution Overview
Problem
The press time required for gluing composite products using two-component adhesives is often a limiting factor in production capacity, influenced by the temperature and the ratio of resin to hardener, making it difficult to optimize plant utilization.
Innovation Solution
A method and apparatus for controlling the ratio of hardener to resin in the adhesive by calculating the desired press time and temperature to optimize the production process, allowing for efficient planning and reduced press time without compromising quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the press time is extended to ensure high quality gluing, then the bonding quality is improved, but the production capacity decreases
Solution Approach 1:
The patent changes the chemical composition parameters of the adhesive system by increasing the hardener-to-resin ratio. This parameter modification accelerates the curing kinetics, enabling high-quality bonding to be achieved in shorter press times (e.g., 5-30 minutes instead of several hours), thereby resolving the contradiction between bonding quality and production capacity
Solution Approach 2:
The patent introduces dynamic control of the adhesive formulation by adjusting the hardener-to-resin ratio based on specific production requirements. This allows the system to adapt between quality-critical applications (higher hardener ratio) and volume-critical applications (optimized ratio), dynamically balancing bonding quality with production throughput
2Productivity
If the hardener-to-resin ratio is increased to reduce press time, then the production efficiency is improved, but the adhesive formulation complexity increases
Solution Approach 1:
The patent modifies the adhesive formulation parameters by increasing the hardener-to-resin ratio, which accelerates curing and reduces press time. This parameter change is implemented within existing two-component adhesive systems, maintaining formulation simplicity while achieving production efficiency improvements
Solution Approach 2:
The patent performs preliminary optimization of the hardener-to-resin ratio during the adhesive formulation stage, so that the accelerated curing effect is built into the adhesive system before application. This preliminary action eliminates the need for complex real-time formulation adjustments during production, maintaining operational simplicity
3Productivity
If the press time is reduced to increase production capacity, then the plant utilization is improved, but the bonding quality may deteriorate
Solution Approach 1:
The patent changes the chemical parameters of the adhesive system by increasing the hardener-to-resin ratio, which fundamentally alters the curing kinetics. This parameter change enables the system to achieve adequate bond strength in shorter press times, allowing plant utilization to be improved without sacrificing bonding quality
Solution Approach 2:
The patent substitutes mechanical/thermal curing (relying on pressure and temperature over extended periods) with chemical curing acceleration through modified adhesive formulation. The enhanced chemical reactivity of the high hardener-to-resin system enables rapid bond development, replacing the need for long mechanical pressing cycles
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 more efficient use of production time, allowing for increased production capacity by adjusting the hardener-to-resin ratio based on specific conditions, thereby optimizing plant utilization and reducing material usage.
Implementation Method 1
a glue comprising at least one first component and at least one second component... comprising at least one first component comprising a resin and at least one second component comprising a hardener
Data Source
Figure 1
AI summary
The invention relates to a method of manufacturing a composite product, wherein a plurality of elements are assembled by gluing them together under pressure with a glue comprising at least one first component and at least one second component, which method further comprises controlling the relation between the second and the first components of the glue applied. The press time is often a limiting factor for the production capacity of a plant and renders the production planning difficult. The press time is affected not by the temperature of the elements, but also a great extent by the relation between the components in the glue and can be significantly decreased by increasing the amount of hardener compared to the amount of resin. According to the invention, it has been found that this can be utilised for controlling the gluing in a way so the production can be planned more efficiently.