Door Assembly Using Rapid Green Strength Adhesive
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Solution Overview
Problem
The door manufacturing process faces challenges such as warping of door skins due to temperature or humidity, inaccurate assembly, and the need for tailored prefabricated solid cores for each door design, which increases costs and complexity.
Innovation Solution
The use of adhesives that quickly achieve green strength to maintain component positioning during assembly, specifically employing polyurethane reactive (PUR) adhesives with controlled application and timing to minimize defects and ensure quality in door construction, allowing for the use of universal core components across various door designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If prefabricated solid cores are used for each door design, then the core provides rigidity and structural integrity, but the manufacturing complexity and cost increase due to tailoring for each design
Solution Approach 1:
The patent applies universality by designing a single standardized core component that can be used across multiple door designs. The core includes a receiving cavity that accommodates door skins with varying panel configurations, allowing one core to serve multiple functions and door types without requiring custom tailoring for each design variant.
Solution Approach 2:
The patent segments the door assembly into modular components: a standardized core with receiving cavities, separate door skins with panels, and adhesive bonding interfaces. This segmentation allows the core to be universally applied while accommodating different panel arrangements through the modular skin components.
2Ease of manufacture
If door skins are applied without rapid adhesive bonding, then assembly is simpler, but warping and distortion occur due to temperature or humidity changes
Solution Approach 1:
The patent applies preliminary action by pre-positioning the door skins within the receiving cavities before final adhesive bonding. The skins are temporarily held in place during assembly, allowing for positioning adjustments and alignment verification before the adhesive cures, thereby preventing warping and distortion while maintaining assembly simplicity.
Solution Approach 2:
The patent utilizes parameter changes by employing adhesive with controlled curing characteristics. The adhesive provides initial bonding strength quickly to prevent skin movement during assembly, then allows for controlled curing that accommodates temperature and humidity variations without causing warping or distortion of the door skins.
3Manufacturing precision
If core components are customized for each door design, then the core fits the specific design requirements, but the production efficiency decreases
Solution Approach 1:
The patent implements universality by designing a standardized core component with receiving cavities that can accommodate multiple door skin configurations. This single standardized core replaces the need for custom-tailored cores for each door design, thereby maintaining precise fit for various designs while significantly improving production efficiency and assembly line productivity.
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 prevents component movement and distortion, ensuring high-quality door assembly with reduced defects and increased efficiency by achieving green bonding strength rapidly, enabling the use of versatile core components across different door designs.
Implementation Method 1
adhesives that quickly achieve green strength to maintain component positioning during assembly
Data Source
AI summary
Half doors, doors, systems and methods of making the same are described, including use of an adhesive that is capable of achieving green strength in a predetermined time, including for exemplary automated embodiments, to prevent movement of the components relative to each other.