Jiangsu Jianglin Yihai New Material Science & Technology Co., Ltd. is one of the leading manufacturers and suppliers of weatherproof twinwall plastic panels in China. With abundant experience, we warmly welcome you to wholesale premium weatherproof twinwall plastic panels for sale here from our factory. All customized products are with high quality and competitive price. For quotation, contact us now.
Industrial-Grade Weatherproof Twinwall Polypropylene (PP) Sheets
Weatherproof Twinwall plastic panels are lightweight, durable hollow-structure sheets engineered from premium polypropylene resins. Designed with a double-wall fluted matrix, these panels optimize weight reduction while maintaining exceptional structural rigidity for large-format signage, protection boards, packaging, and industrial partitions.
For demanding exterior applications, our UV-stabilized formulations prevent yellowing, embrittlement, and structural degradation caused by prolonged solar exposure.
Core Applications
Outdoor Signage & Graphics: Real estate yard signs, directional boards, election signs, and POP retail displays.
Construction & Renovation: Heavy-duty floor, wall, and surface protection panels.
Agriculture & Horticulture: UV-resistant tree guards, greenhouse components, and nursery dividers.
Industrial & Reusable Packaging: Custom layer pads, tote boxes, ESD-safe partitions, and chemical-resistant liners.
Temporary Outdoor Barriers: Site enclosures, privacy screens, and temporary partitions.
Material & Structural Engineering
Polypropylene (PP) Polymer Formulation
Manufactured from 100% recyclable polypropylene copolymer or homopolymer resins, our panels offer key performance advantages:
- High Strength-to-Weight Ratio: Delivers structural rigidity while significantly reducing handling and freight costs compared to solid plastic or timber.
- Zero Moisture Absorption: Completely impervious to water, rain, rot, and high-humidity environments.
- Chemical Inertness: Excellent resistance to common acids, alkalis, solvents, and industrial oils.
Precision Flute Structure
Internal vertical ribs connect the outer surfaces to form the fluted matrix. Flute orientation (rib direction) is engineered according to your specific cutting, folding, die-cutting, or load-bearing requirements to maximize strength.
Technical Specifications
|
Parameter |
Standard Specification Range |
Extended Customization (OEM) |
|
Material Base |
Polypropylene (PP) Copolymer / Homopolymer |
Recycled PP / Flame Retardant Additives |
|
Structure |
Twinwall / Fluted Matrix |
Custom internal rib density |
|
Thickness |
2.0 mm - 7.0 mm (Standard) |
Up to 12.0 mm upon engineering request |
|
Weight Range (GSM) |
250 gsm - 1500 gsm |
Tailored to application load requirements |
|
Max Sheet Width |
Up to 2600 mm |
Custom precision slit widths |
|
Length |
Standard 2440 mm (8 ft) / Custom |
Continuous rolls or cut-to-size sheets |
|
Surface Tension |
38 - 46 Dynes/cm (Corona Treated) |
Extended dyne retention for prolonged storage |
|
UV Protection Level |
1% - 5% UV Stabilizer Content |
1 to 5-year outdoor warranty options |
|
Functional Additives |
Anti-static, ESD, Flame Retardant (UL94-V0) |
Custom masterbatch color matching (Pantone/RAL) |
|
Standard Colors |
White, Black, Blue, Grey, Green, Yellow, Red |
Fully customized color formulations |
Fabrication & Conversion Compatibility
High-Speed Printing: Fully compatible with Flatbed UV printing, Screen printing, and Digital Inkjet. Pre-treated surfaces ensure high ink adhesion and vibrant color rendering.
Precision Cutting & Die-Cutting: Easily converted using CNC routers, digital cutting tables, or traditional steel-rule dies for intricate packaging and display geometry.
Thermal Creasing & Folding: Clean score lines enable structural folding for boxes, guards, and 3D display units without stress cracking.
Mechanical & Thermal Joining: Compatible with ultrasonic welding, hot-gas welding, drilling, riveting, and commercial adhesive systems.
Quality Assurance & Compliance
To guarantee batch-to-batch consistency for high-volume global procurement, every production run follows strict Quality Control (QC) procedures:
- Raw Material Verification: Melt Flow Index (MFI) and density testing prior to extrusion.
- In-Line Process Control: Automated laser thickness monitoring, continuous weight (GSM) checks, and flute alignment inspection.
Laboratory Testing:
- Surface Tension Testing: Dyne pen testing to ensure print readiness (>= 38 Dynes/cm).
- Accelerated Weathering: UV aging chamber exposure testing according to ASTM G154 / ISO 4892 standards.
- Mechanical Integrity: Dart impact resistance and flexural modulus evaluations.
- Regulatory Compliance: Full documentation available for REACH, RoHS, ISO 9001:2015, and FDA compliance (for food-contact grades).
Manufacturing Capacity & OEM Order Workflow
Operating advanced multi-layer co-extrusion lines, our facility maintains a production capacity of 300 - 470 kg/h per line, ensuring reliable lead times for global volume orders.
B2B Project Workflow
- RFQ & Engineering Review: Submit your technical drawings, required GSM, dimensions, color, and exposure conditions.
- Sample Verification: Rapid sample dispatch for physical inspection and print testing.
- Specification Sign-off: Material formulation, packaging format, and quality tolerances are finalized.
- Mass Production & In-Process QC: Real-time production tracking and quality reporting.
- Export Packaging & Logistics: Protective wrapping, wood palletizing, and direct container loading.
Sample Policy & RFQ Guide
Free Sample Program
We provide Free A4 Sample Swatches and structural cut-outs for quality verification, print testing, and dyne level confirmation.
- Sample Lead Time: 1 to 3 business days.
- Custom Prototyping: Pre-production die-cut samples available upon request.
Requesting a Factory Direct Quote
To receive an accurate quotation within 12 hours, please include the following details in your inquiry:
- Dimensions: Width x Length (mm or inches)
- Thickness & Weight: e.g., 4mm / 750 GSM
- Color & Surface Treatment: Color code & Dyne requirement for printing
- Functional Grade: Standard, UV-Stabilized, Flame-Retardant, or Anti-Static
- Order Volume: Total sheets, total weight, or container quantity (20GP / 40HQ
- Destination Port: For CIF/DDP freight calculation
FAQ
Q: How long can UV-stabilized twinwall PP sheets last outdoors?
A: Outdoor lifespan varies depending on geographic location, solar radiation intensity, and installation angle. Our standard UV-stabilized panels (1% to 3% additive content) are designed for 1 to 3 years of exterior exposure.
Q: What dyne level do you guarantee for printable panels, and how long does the treatment last?
A: We supply panels corona-treated to 38 - 46 Dynes/cm for flatbed UV and screen printing. Under proper indoor storage conditions (cool, dry, away from direct sunlight), the surface tension remains suitable for printing for up to 6 months.
Q: Do you offer flame-retardant grades for indoor exhibition and construction protection?
A: Yes. We manufacture flame-retardant twinwall PP panels that meet international fire safety standards, including UL94-V0 and EN 13501-1 Class B ratings.
Q: Can you provide pre-cut sizes or custom die-cut shapes instead of standard full sheets?
A: Yes, we offer complete OEM fabrication services. In addition to supplying full extruded sheets (up to 2600 mm width), our factory is equipped with high-speed digital cutting tables, CNC routers, and automatic die-cutting machines to deliver finished, ready-to-use components according to your CAD/PDF drawings.
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