Heat-Activated Expandable Adhesive for Honeycomb Panel Inserts
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Solution Overview
Problem
The traditional method of inserting components into honeycomb panels is labor-intensive and lacks accuracy due to manual glue injection and removal of excess adhesive, which can be time-consuming and inconsistent.
Innovation Solution
A heat-activated expandable adhesive is used to securely bond inserts within honeycomb panels, expanding to fill gaps and develop adhesive properties during a controlled heating cycle, allowing for precise placement and attachment of components without the need for manual glue injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual glue injection is used to bond inserts in honeycomb panels, then the bonding process can be performed with simple equipment, but the process becomes labor-intensive and time-consuming
Solution Approach 1:
The adhesive is pre-applied to the insert before insertion into the cavity. This preliminary action eliminates the need for manual glue injection during the assembly process, allowing the insert to be bonded directly upon insertion while maintaining simple equipment requirements.
Solution Approach 2:
The adhesive is formulated to be non-tacky at room temperature during storage and handling, then automatically activates upon heating during the bonding process. This self-service characteristic eliminates the need for operators to manually inject or manage adhesive application, significantly improving productivity while keeping the process simple.
2Device complexity
If manual glue injection is used to bond inserts, then equipment complexity is reduced, but manufacturing precision and consistency deteriorate
Solution Approach 1:
The adhesive is pre-applied to the insert in a controlled manner before insertion. This preliminary action ensures consistent adhesive distribution on the insert surface, improving bonding precision while avoiding the variability of manual injection during assembly.
Solution Approach 2:
The adhesive's tackiness parameter is changed by temperature - it remains non-tacky at room temperature for easy handling and precise positioning, then becomes tacky when heated during the bonding process. This parameter change ensures both precision in placement and effectiveness in bonding without complex equipment.
3Ease of manufacture
If adhesive is injected manually into the cavity, then the process can be performed with simple tools, but the amount of time required for the process increases
Solution Approach 1:
The adhesive is pre-applied to the insert before insertion into the cavity. This eliminates the time-consuming step of manual injection during assembly, reducing the overall bonding process duration while maintaining tool simplicity.
Solution Approach 2:
The adhesive is formulated to activate continuously upon heating after insertion, eliminating idle time between injection and bonding. The heating process simultaneously activates the adhesive and cures the bond, creating a continuous useful action that reduces total process time.
4Ease of manufacture
If the adhesive is activated at room temperature, then the bonding can occur without heating equipment, but the adhesive becomes tacky during storage and handling
Solution Approach 1:
The adhesive's tackiness parameter is controlled by temperature - it remains non-tacky at room temperature during storage and handling for stability, then activates and becomes tacky when heated during the bonding process. This parameter change resolves the contradiction between ease of manufacture and handling stability.
Solution Approach 2:
The adhesive undergoes periodic state changes based on temperature exposure - stable and non-tacky during storage at room temperature, then activates when heated for bonding. This periodic action between stable storage state and active bonding state resolves the contradiction.
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 method reduces labor and improves accuracy by automating the bonding process, ensuring strong and reliable attachment of components to honeycomb panels with minimal manual intervention and enhanced adhesive properties.
Implementation Method 1
the adhesive is foamed by the action of heat and preferably the adhesive foams and develops adhesive properties during the same heating cycle
Implementation Method 2
the adhesive may be activated to securely bond the insert at the required location within the cavity in the article of manufacture
Data Source
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Figure 7
AI summary
Inserts such as screw threaded receivers are provided with an activatable adhesive so they can be inserted into a cavity of an article of manufacture and the adhesive activated to secure the insert within the article.