Layered Bulletproof Pad Composite for Non-Flammable Building Panels

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Solution Overview

Problem

Existing bulletproof materials are not suitable for applications in building interiors and exteriors due to flammability and potential generation of toxic gases in fires, and they lack eco-friendliness and durability in high-risk gun accident environments.

Innovation Solution

A bulletproof pad composed of a core material formed by weaving fiber glass and aramid, an outer cover member with high-density polyethylene and impregnated kraft paper, and a non-flammable member with acrylic resin and ceramic coating, enhanced with inorganic flame retardants, to provide non-flammability and improved durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If carbon fiber bulletproof materials are used, then bulletproof performance is improved, but flammability and toxic gas generation worsen

Engineering Contradiction:

Improvebulletproof performanceVSAvoidflammability and toxic gas generation

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent uses a composite material structure consisting of multiple layers including aramid fabric, polyethylene foam, and ceramic particles embedded in a resin matrix. This composite structure maintains bulletproof performance while the inorganic ceramic particles and flame retardant additives provide non-flammable properties, resolving the contradiction between bulletproof strength and fire safety

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies the chemical composition parameters of the bulletproof material by incorporating flame retardant additives and inorganic ceramic particles into the resin matrix. This changes the material's combustion characteristics from flammable to non-flammable while preserving its mechanical bulletproof properties

Inventive Principle:

Principle #35Parameter changes

2Strength

If conventional bulletproof materials are used, then bulletproof protection is provided, but applicability to building materials worsens

Engineering Contradiction:

Improvebulletproof protectionVSAvoidapplicability to building materials

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The patent creates a multi-functional material that simultaneously provides bulletproof protection, fire resistance, and structural panel characteristics. The composite structure with ceramic particles embedded in flame-retardant resin can serve both as protective armor and as building interior/exterior panels, expanding applicability beyond traditional military use

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Strength

If bulletproof fabric with shear thickening fluid is used, then bulletproof performance is improved, but weight and complexity worsen

Engineering Contradiction:

Improvebulletproof performanceVSAvoidweight

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The patent employs a rigid composite panel structure with ceramic particles embedded in a thermosetting resin matrix that cures to form a hard, lightweight protective panel. This approach replaces heavy flexible fabrics with a lighter rigid composite structure that provides equivalent or superior bulletproof protection

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 pad prevents delamination and breakage from bullets while enhancing non-flammability and eco-friendliness, expanding its applicability to building materials and improving product competitiveness.

Implementation Method 1

a non-flammable member formed by attaching an acrylic resin and a ceramic coating material to at least one surface of the outer cover member

Methodology Applied

Scientific EffectNon-flammable property:

Implementation Method 2

a core material formed in a stack structure by weaving a fiber glass and an aramid

Methodology Applied

Scientific EffectImpact energy absorption:

Implementation Method 3

the non-flammable member may further include an inorganic flame retardant selected from magnesium oxide, zinc oxide, titanium oxide, magnesium hydroxide, calcium carbonate, silicon dioxide, and aluminum hydroxide

Methodology Applied

Scientific EffectFlame retardancy:

Implementation Method 4

an adhesive layer formed between the base layer and the reinforcing layer

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS12449236B2Multipurpose bulletproof pads with non-flammable property

Publication Date: 2025.10.21 SEOHAN ANTAMINE

AI summary

Provided are a core material (10) formed in a structure in which a fiber glass (10A) and an aramid (10B) are woven and stacked; an outer cover member (20) formed by attaching high-density polyethylene (20A) and impregnated kraft paper (20B) to an outside of the core material (10); and a non-flammable member (30) formed by attaching an acrylic resin (30A) and a ceramic coating material (30B) to at least one surface of the outer cover member (20). Therefore, it is possible to prevent deterioration of bulletproof power due to detachment and breakage caused by bullets in the event of a gun accident, and to enhance non-flammability and eco-friendliness to expand the internal and external fields of a building, thereby enhancing product competitiveness and increasing usability.