In the era where “urban renewal” is shifting from incremental expansion to stock renewal, Facade Retrofit faces extremely stringent physical and construction constraints: no large-scale demolition and reconstruction, no long-term disturbance to residents, complex substrates of old walls, and strict compliance requirements such as Class A2 fire resistance.
When facing these pain points, traditional exterior wall materials (such as tiles, stones, and paints) often fall into the “impossible triangle” of being “lightweight, durable, and compliant.” As a pioneer in the field of “Modified Inorganic Powder Composite Building Decorative Sheet” (commonly known as Flexible Stone), Guangdong Fortune Stone New Material Co., Ltd. relies on strong independent R&D capabilities to build four core patent technology barriers around material formulations and construction equipment. The company has also obtained multiple authoritative SGS testing certifications, providing an “analyzable, verifiable, and replicable” system solution for exterior wall retrofits.
Core Patent 1: High-Flexibility Emulsion and Its Preparation Method
— Directly Addressing Extreme Cold Freeze-Thaw and Building Deformation Pain Points
In severe cold regions in the north or on old buildings with unstable structural deformation, traditional rigid materials are highly prone to cracking and peeling. Guangdong Fortune Stone’s “High-Flexibility Emulsion and Its Preparation Method and Application in Flexible Stone” (Application No.: CN202610376325.2) adopts a monomer pre-emulsified semi-continuous seeded emulsion polymerization process and introduces special modified additives into the core-shell structure.
Technological Transformation Results (Backed by SGS Testing):
- Extreme Weather Resistance: The Flexible Stone maintains excellent flexibility at -30°C. It not only perfectly passes 100 freeze-thaw cycles without cracking or peeling, but its artificial weathering resistance test also reaches an astonishing 1500 hours (far exceeding the industry’s conventional standards).
- Excellent Flexibility Adaptation: In retrofit projects, it can perfectly cope with substrate deformation caused by temperature changes and minor structural displacements, preventing cracking of the decorative layer.
Core Patent 2: Non-Migratory Flexible Stone Emulsion Based on Reactive Emulsifier
— Solving the Challenges of Interface Weakening and Hollowing/Peeling
Flexible Stone Engineering points out that excessive substrate moisture content and improper interface treatment are the number one culprits for hollowing and peeling in retrofit projects. Guangdong Fortune Stone has thoroughly solved this pain point through “Non-Migratory Flexible Stone Emulsion Based on Reactive Emulsifier and Its Preparation Method and Application” (Application No.: CN202610057003.1).
Technological Transformation Results:
- Covalent Bonding: Emulsifier molecules are bonded to the surface of polymer particles via covalent bonds through double-bond functional groups, fundamentally eliminating defects such as surface skinning, mold sticking, and water resistance degradation caused by the migration of small molecules.
- High Reliability: It greatly improves the interface stability of Flexible Stone under complex substrate conditions, ensuring a bond strength of ≥0.4MPa, fundamentally eliminating safety hazards caused by “installing on sick substrates” from a materials science perspective.
Core Patent 3: Large-Particle Size High-Breathability Special Emulsion for Flexible Stone
— Allowing Old Walls to “Breathe Freely”
Retrofit exterior walls often endure decades of wind and rain, accumulating a large amount of moisture within the wall body. If the decorative material is not breathable, long-term moisture accumulation will cause the adhesive layer to fail. Fortune Stone’s “Large-Particle Size High-Breathability Special Emulsion for Flexible Stone and Its Preparation Method and Application” (Application No.: CN202511656186.0) precisely regulates the volume fraction of the interface phase through a large-particle size core-shell structure design.
Technological Transformation Results:
- Balanced Breathing: While maintaining flexibility, it significantly improves breathability, effectively discharging substrate moisture and greatly reducing the risk of hollowing and peeling caused by excessive moisture content in retrofitted walls.
- Antibacterial and Anti-Mold: Combined with authoritative testing, it endows the material with outstanding antibacterial (antibacterial rate >99.9%) and antiviral (antiviral activity rate 99.93%) properties.
Core Patent 4: A Cutting Device for Flexible Stone
— An Eco-Friendly Weapon for “Retrofitting While Living” Projects
Retrofit projects mostly involve “construction with residents in place,” placing extremely high requirements on noise and dust control. Fortune Stone’s “A Cutting Device for Flexible Stone” (Application No.: CN202511837739.2) achieves the integration of cutting, fixing, pushing, and dust removal.
Technological Transformation Results:
- Green Construction: It solves the problems of heavy dust, high noise, and easy material damage associated with traditional cutting methods.
- Efficient Delivery: The cutting edges are smooth and flat, requiring no secondary processing. Combined with thin-bed application, the construction efficiency can reach 30-50㎡/person·day, significantly shortening the disturbance period and aligning with the rigid constraints of retrofits: “no disturbance to residents, no delay in the construction schedule.”
More Than Just Materials: Flexible Stone Exterior Wall System Delivery
The core advantage of Guangdong Fortune Stone lies not only in the R&D of individual sheets but also in integrating patented technologies into the systematic delivery of “Flexible Stone Engineering”:
- System Compliance: The company has obtained a full set of compliance qualifications issued by SGS, including CE Certification, Class A2-s1,d0 Fire Resistance Test Report, and SDS (Safety Data Sheet), meeting the stringent requirements for high-rise buildings and densely populated areas.
- Full Life-Cycle Value: The weight is only 3-5kg/m² (about 1/10 of ceramic tiles), adding no structural load. It has excellent stain resistance (reflectance coefficient drop rate is only 12%), significantly reducing later cleaning and maintenance costs.
On the long-term track of urban retrofit, the generational replacement of materials is taking place. With four core patents as its spear and systematic engineering methods as its shield, Guangdong Fortune Stone New Material Co., Ltd. is helping more urban buildings complete the transformation from “reskinning” to “systematic rebirth.”
(Note: The testing data cited in this article are all sourced from official reports issued by SGS-CSTC Standards Technical Services Co., Ltd. Patent information is subject to public announcements by the China National Intellectual Property Administration.)