Wrinkle PPGI is a textured pre-painted galvanized steel coil featuring a distinctive three-dimensional wrinkle surface finish that combines decorative appeal with enhanced durability for roofing, cladding, and appliance manufacturing.
مشخصات کلیدی:
مناسب برای: Roofing systems, architectural cladding, exterior wall panels, premium home appliances, furniture surfacing, and retail fixture manufacturing.
Wrinkle PPGI is a textured pre-painted galvanized steel coil engineered with a distinctive three-dimensional wrinkle surface finish. The specialized coating formulation creates a permanent, visually striking texture that combines decorative appeal with enhanced durability. Widely specified for roofing systems, architectural cladding, commercial façade panels, and premium appliance manufacturing, wrinkle PPGI delivers both aesthetic differentiation and long-term corrosion resistance for demanding B2B applications.
1. Distinctive Wrinkle Texture: The surface features an irregular, three-dimensional wrinkle pattern produced through a controlled curing process. This unique texture adds visual depth, effectively masks minor surface imperfections, and provides a tactile finish that differentiates finished products in competitive markets.
2. Enhanced Surface Durability: The textured profile offers improved resistance to surface abrasion and mechanical wear compared to smooth PPGI finishes. Minor scratches and handling marks that would be visible on conventional coatings are naturally concealed by the wrinkle pattern, making it an excellent choice for high-traffic or handling-intensive applications.
3. Superior Coating Adhesion: The specialized wrinkle-finish formulation achieves stronger mechanical bonding to the substrate than standard paint systems. This reduces the risk of delamination, peeling, or flaking over the product lifecycle, particularly in environments with thermal cycling or mechanical stress.
4. Broad Design Flexibility: Available across the full RAL color spectrum, wrinkle PPGI supports diverse architectural and industrial design languages — from retro and industrial aesthetics to contemporary minimalist schemes. The texture and color combinations can be tailored to specific project requirements.
5. Excellent Corrosion Resistance: Built on a galvanized steel substrate with zinc coating ranging from 30 to 275 g/m², wrinkle PPGI provides robust protection against rust and atmospheric corrosion. The multi-layer coating system — primer, wrinkle topcoat, and back coat — forms a comprehensive barrier suitable for both interior and exterior environments.
| نام محصول | Wrinkle PPGI (Textured Pre-Painted Galvanized Steel Coil) |
| Thickness Range | 0.15 mm – 1.5 mm |
| Width Range | 600 mm – 1250 mm |
| طول | Custom cut to buyer specification |
| Zinc Coating | 30 – 275 g/m² (Z30 – Z275) |
| Top Coating | 10 – 35 μm (wrinkle-texture polyester or modified polyester system) |
| Back Coating | 5 – 14 μm (protective epoxy or polyester backing) |
| Substrate Grades | DX51D, DX53D, Q235, SPCC, SGCC, SGCH, and equivalent grades |
| Applicable Standards | GB/T 12754, ASTM A755, EN 10169, JIS G 3312 |
| وزن کویل | 3 – 8 metric tons per coil (standard) |
| Available Colors | Full RAL palette; popular options include RAL 7024, RAL 8017, RAL 9005, RAL 3000, RAL 5015, RAL 6005 |
| خدمات پردازش | Slitting, cut-to-length, punching, press forming, and profile rolling |
| Minimum Order Quantity | 10 metric tons (smaller trial quantities negotiable) |
| بستهبندی | Standard seaworthy export packaging with edge protection and moisture barrier |
The signature wrinkle effect is achieved through a precisely engineered coating and curing process:
Step 1 – Specialty Coating Application: A high-viscosity, thixotropic paint formulation — typically based on modified polyester or acrylic resin systems with specialized curing agents — is applied to the galvanized substrate via precision roller coating equipment. The coating is deposited at a heavier film build than standard PPGI to provide sufficient material for texture development.
Step 2 – Controlled Thermal Curing: The coated coil enters a multi-zone curing oven with precisely managed temperature gradients. The elevated temperature triggers differential curing: the surface layer crosslinks and solidifies rapidly, while the underlying coating layer cures at a slower rate.
Step 3 – Texture Formation: As the slower-curing inner layer undergoes its curing cycle, it generates controlled shrinkage stress against the already-set surface layer. Because this stress distributes unevenly across the coating, it produces the characteristic irregular, artistic wrinkle pattern that is permanently locked into the cured finish.
The fundamental difference between wrinkle PPGI and conventional smooth PPGI lies in the coating chemistry and application process. Standard PPGI uses a conventional polyester, silicone-modified polyester (SMP), or PVDF coating system applied in a uniform, smooth film. Wrinkle PPGI employs a specially formulated high-viscosity, high-thixotropic paint that undergoes controlled differential curing to produce its characteristic texture.
This process requires a thicker coating film build than standard finishes, which contributes to both the visual effect and the enhanced mechanical durability. As a result, wrinkle PPGI typically commands a higher price point than comparable smooth PPGI products — a premium justified by the added aesthetic value and extended service life in demanding applications.
For optimal results when processing wrinkle PPGI coils, the following practices are recommended:
Slitting & Cutting: Standard coil slitting lines and cut-to-length shears are suitable. The textured surface does not interfere with conventional cutting equipment. Sharp tooling and appropriate clearance settings help maintain clean edges.
Roll Forming: Wrinkle PPGI can be roll-formed into corrugated, trapezoidal, and standing seam profiles using standard roll forming lines. The coating’s strong adhesion and flexibility accommodate typical bend radii without cracking or delamination.
Press Forming & Punching: The coating system is engineered to withstand moderate forming operations. For deep-draw applications, testing with sample material is suggested to validate performance against specific tooling and draw depths.
Handling & Storage: While the wrinkle texture provides superior scratch concealment compared to smooth PPGI, standard coil handling practices are recommended: use protective slings, store coils in dry conditions, and avoid dragging sheets across one another during fabrication.
Each production batch of wrinkle PPGI undergoes a multi-stage quality verification protocol:
The standard MOQ is 10 metric tons per specification. For initial qualification and trial purposes, smaller quantities may be accommodated — please contact our sales team with your specific requirements, and we will work to find a suitable arrangement.
Wrinkle PPGI is available across the full RAL color range. Standard stock colors include RAL 7024 (graphite grey), RAL 8017 (chocolate brown), RAL 9005 (jet black), RAL 3000 (flame red), RAL 5015 (sky blue), and RAL 6005 (moss green). Custom RAL matching is available for orders meeting the MOQ threshold.
For exterior architectural and roofing applications, a zinc coating of Z120–Z275 (120–275 g/m²) is typically suggested, depending on the environmental corrosivity category of the project location. For interior or sheltered applications, Z30–Z100 may be adequate. Our technical team can provide specific guidance based on your project’s exposure conditions.
Yes. Wrinkle PPGI is routinely roll-formed into corrugated, trapezoidal, and standing seam roofing profiles. The coating system maintains strong adhesion and flexibility through standard forming operations. Test runs for new or complex profiles are recommended to validate processing parameters.
The textured surface does not significantly complicate routine cleaning. Standard mild detergent and water washing is effective for most environmental soiling. The wrinkle pattern naturally conceals minor dust and handling marks better than smooth finishes, which can reduce the frequency of cleaning required in many applications.
Standard export packaging includes: inner moisture-resistant wrapping, edge protection rings, steel strapping, and outer weather-resistant wrapping. Coils are packed on wooden pallets or in steel cradles suitable for containerized ocean freight. Custom packaging specifications can be arranged for project-specific logistics requirements.
Our manufacturing facilities are certified to ISO 9001 (quality management) and ISO 14001 (environmental management). Products can be supplied with CE marking and mill test certificates (MTC) per EN 10204. Additional third-party testing and certification can be coordinated for project-specific compliance requirements.
