Fireproof Door Panel with Phenolic Core and Sealing
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Solution Overview
Problem
Conventional fireproof door panels fail to effectively prevent fire from spreading due to the flammability of materials used in their construction, such as PVC and wood, which allow flames to penetrate through gaps between the door panel and frame, despite the use of fire retardant materials like foamed phenolics and magnesium oxide plates.
Innovation Solution
A fireproof door panel structure featuring a core of phenolic resin with glass-fibre cloth reinforcement, a quadrilateral frame made from high-strength materials like hard PVC or stainless steel, and sealing members with snap-connection mechanisms and in-turned lips to enhance binding and fire resistance, along with additional features like magnesium oxide plates and heat-expansive materials for improved fire retardance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional materials like PVC and wood are used for the door frame, then the door panel is easier to manufacture and install, but the door panel becomes flammable and allows fire to spread through gaps
Solution Approach 1:
The patent applies composite materials by combining fire-retardant materials (such as magnesium oxide plates, calcium silicate plates, or fire-resistant foams) with structural materials (PVC, wood, or metal) to create a door panel that maintains both ease of manufacture and fire resistance. The core material is constructed as a composite structure where fire-retardant layers are integrated within the frame and panel assembly, ensuring that the overall structure resists fire while remaining manufacturable with conventional materials and methods.
2Object-affected harmful factors
If fire-retardant materials like foamed phenolics and magnesium oxide plates are added to the door panel, then fire resistance is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into integrated components. For example, the frame structure itself is designed to incorporate fire-retardant materials as integral parts rather than separate add-ons. The surface plates are bonded directly to the core material in a unified assembly, and sealing members are integrated into the frame structure. This merging approach maintains fire resistance while reducing the number of separate components and simplifying the overall device complexity.
3Object-affected harmful factors
If the door panel uses a solid core structure with fire-retardant materials, then fire blocking capability is improved, but the weight of the door panel increases
Solution Approach 1:
The patent applies local quality by concentrating fire-retardant materials in specific critical areas rather than uniformly throughout the entire door panel. For example, fire-retardant core materials are placed in the frame structure, at the edges where sealing is required, and in strategic positions within the panel assembly. This localized approach ensures fire blocking capability is maintained in critical zones while reducing the overall weight compared to a completely solid fire-retardant core.
4Strength
If the surface plates are made with rough inner surfaces and glass-fibre cloth reinforcement, then binding force and structural integrity are improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the surface plate construction into distinct functional layers: an outer aesthetic layer, a reinforcement layer with glass-fibre cloth, and a bonding layer with rough inner surface. This segmentation allows each layer to be optimized independently - the rough surface provides mechanical bonding without requiring high precision, while the glass-fibre reinforcement provides structural strength. The layered approach simplifies manufacturing by allowing standard tolerances for each layer rather than requiring high precision for the entire assembly.
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
The enhanced structure effectively blocks fire from entering or spreading across the door panel, maintaining structural integrity and preventing deformation during a fire, thereby improving the overall fireproof properties of the door panel.
Implementation Method 1
the front and rear surface plates are bound to the core with adhesive; on an inner surface of the front surface plate and/or the rear surface plate is attached one or more layers of glass-fibre cloth
Implementation Method 2
the core material comprises phenolic resin... When the door panel is on fire, the effect of blocking the fire out of the room is developed by the fire retardance of the foamed phenolics
Data Source
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AI summary
The invention relates to a fireproof door panel (30) comprising a front surface plate (31) and a rear surface plate (32) formed as door leafs, a quadrilateral frame (33, 34, 35, 36) formed as a door frame, one or more sealing members (37) formed as outer edge sealing structures and a core material (40) formed as an inner sandwich structure, wherein the core material (40) possesses an excellent fire retardance and is made of material such as perlite plate, calcium silicate, wood or the single material of phenolic resin, chemical synthetic resin or composite plate. If the door is on fire, the core material (40) of the fireproof door blocks the fire, keeps the fire outside the room and prevents the flame from passing and spreading across the fireproof door.