Jiangsu Jianglin Yihai New Material Science & Technology Co., Ltd. is one of the leading manufacturers and suppliers of structural corrugated plastic panels in China. With abundant experience, we warmly welcome you to wholesale premium structural corrugated plastic panels for sale here from our factory. All customized products are with high quality and competitive price. For quotation, contact us now.
Structural Corrugated Plastic Panels
Structural corrugated plastic panels (commonly known as twin-wall polypropylene sheets, Corflute, or Coroplast) are extruded polypropylene (PP) sheets built with an internal hollow ribbed core. This hollow structure provides a high strength-to-weight ratio, offering exceptional panel stiffness while keeping the overall weight low.
Engineered for industrial applications, these panels deliver an ideal balance of lightweight handling, moisture resistance, chemical durability, dimensional stability, and easy fabrication. They are widely used across industrial packaging, automotive component handling, reusable logistics systems, partitions, construction protection, agriculture, signage, and display solutions.
Technical Specifications & Compliance
|
Parameter |
Specification / Performance |
Standard / Compliance |
|
Primary Material |
Polypropylene (PP) Homopolymer / Copolymer |
RoHS, REACH Compliant |
|
Structure Profile |
Twin-wall hollow corrugated / ribbed core |
Extrusion Profile |
|
Thickness Range |
2.0 mm to 7.0 mm |
ISO 2768 / Factory Standard |
|
Maximum Width |
Up to 2600 mm |
Custom Trimmed Edges |
|
Length |
Customized to order / Continuous sheet |
Custom Length |
|
Sheet Density (GSM) |
300 g/m2 to 1800 g/m2 (Customized to thickness) |
ISO 536 |
|
Standard Grade |
Water-resistant, oil-resistant, high toughness |
General Packaging & Dunnage |
|
UV-Stabilized Grade |
Weatherproof, resists yellowing and embrittlement |
Outdoor Use (2 to 5+ years) |
|
Antistatic Grade |
Surface Resistivity: 10^6 to 10^9 ohm/sq |
IEC 61340 / ASTM D257 |
|
Conductive Grade |
Surface Resistivity: 10^3 to 10^5 ohm/sq |
IEC 61340 / ASTM D257 |
|
Flame-Retardant Grade |
Self-extinguishing fire safety formulation |
UL94 V-0 / UL94 V-2 |
|
Thermal Resistance |
Operating Range: -20°C to +80°C |
Application Dependent |
|
Surface Energy |
Corona Treated (>42 dynes/cm) |
ASTM D2578 (For Printing) |
|
Fabrication Options |
CNC Cutting, Die Cutting, Folding, Drilling, Riveting, Ultrasonic/Hot-Air Welding, Edge Sealing |
CAD/CAM Compatible |
Performance Comparison
|
Feature |
Corrugated PP Panel |
Paper Corrugated Board |
Solid Plastic Sheet |
|
Moisture Resistance |
100% Waterproof (Zero swelling) |
Degrades under moisture |
100% Waterproof |
|
Weight |
Extremely Lightweight |
Lightweight |
Heavy |
|
Reusability |
High (Multi-trip reusable) |
Low (Single-use / Short life) |
High |
|
Chemical Resistance |
Resists oils, acids, and alkalis |
Poor |
Resists oils, acids, and alkalis |
|
Fabrication |
Easy to die-cut, fold, and weld |
Easy to cut and fold |
Requires heavy machining |
Industrial Applications
Automotive & Industrial Packaging: Custom dunnage, layer pads, partition grids, sleeve boxes, and returnable packaging containers.
Electronics & Static Control: Antistatic and conductive grades for ESD packaging, PCB transport trays, and cleanroom dividers.
Material Handling & Logistics: Reusable tote liners, box separators, and heavy-duty layer pads for containerized shipping.
Construction Protection: Heavy-duty floor protection sheets, wall barriers, temporary enclosures, and waterproofing protection.
Agriculture & Produce Packaging: Waterproof trays, field harvesting boxes, tree guards, and greenhouse separation panels.
Signage & Visual Displays: Corona-treated flat surfaces optimized for screen printing, UV flatbed printing, and digital graphics.
Custom Fabrication Capabilities
Precision CNC & Die Cutting: Custom shapes, slots, holes, and edge profiles with tight tolerances.
Creasing & Score Folding: Precision fold lines for rapid assembly into boxes, sleeves, and totes.
Ultrasonic & Hot-Air Welding: Strong structural joints without requiring external adhesives.
Mechanical Fastening: Riveting, grommet insertion, and corner reinforcement.
Surface Corona Treatment: Enhances surface energy up to 44 dynes/cm for long-lasting printing adhesion.
Edge Sealing: Melt-sealed edges prevent dust, liquids, and contamination from entering the internal flutes.
Technical Selection Guidelines
Unsupported Span & Spacing: Distance between underlying structural supports.
Expected Load Type: Uniformly Distributed Load (UDL) vs. Concentrated Point Load.
Flute Orientation: Aligning flutes parallel to the primary stress/bending axis.
Fastening Method: Screws with oversized washers, clamping channels, rivets, or adhesives.
Operating Environment: Thermal expansion allowances for high-temperature or cold-storage environments.
Quality Control & Verification
Raw Material Inspection: Virgin PP resin verification and masterbatch dispersion testing.
Dimensional & Weight Control: Automated online thickness monitoring and continuous GSM checks.
Surface Energy Testing: Dyne pen testing for corona treatment levels prior to printing or converting.
ESD Verification: Surface resistivity meter testing on antistatic and conductive batches.
Compliance Documentation: Certificates of Analysis (CoA), RoHS, REACH, and UL test reports available upon request.
RFQ Checklist: How to Request a Quote
Dimensions: Thickness (mm), Width (mm), Length (mm)
Gram Square Meter (GSM): Target g/m2 or strength requirement
Functional Grade: Standard, UV-Stabilized, Antistatic, Conductive, or Flame Retardant
Color: Standard (White/Black/Blue) or Custom RAL/Pantone
Application Details: Load requirements, indoor/outdoor exposure, expected service life
Processing Requirements: Raw sheets OR fabricated components (Attach CAD / PDF drawings)
Compliance Needs: Specific test reports required (e.g., UL94, RoHS, REACH, ESD)
Order Quantity & Port: For tiered pricing and freight optimization
FAQ
Q: What is the difference between Coroplast, Corflute, Twin-wall PP, and Corrugated Plastic?
A: These terms refer to the same product category: extruded twin-wall polypropylene hollow sheets. "Coroplast" and "Corflute" are registered brand names that have become common regional terms in North America and Australasia.
Q: How do I choose the correct sheet density (GSM) for my application?
A: GSM (grams per square meter) determines the internal wall thickness and mechanical strength of the panel. A higher GSM increases rigidity, puncture resistance, and load capacity. For example, a 4 mm panel can range from 600 g/m2 (lightweight display) to 1000 g/m2 (heavy-duty industrial packaging).
Q: How long do UV-stabilized panels last in outdoor environments?
A: Standard PP panels degrade under direct sunlight within 3 to 6 months. With UV-inhibitor additives, outdoor service life can be extended to 2 to 5+ years, depending on the regional UV index and operating temperature.
Q: Are corrugated plastic panels recyclable?
A: Yes. Polypropylene (PP) is 100% recyclable (Resin Identification Code 5). Scrap sheets, offcuts, and retired packaging containers can be re-granulated and reused in industrial manufacturing.
Q: Can sealed edges be provided for cleanroom or hygienic packaging?
A: Yes. Edge-sealing technology melts and closes the open flute ends along the perimeter of the panel. This prevents liquid, dust, and debris from entering the internal hollow core, making the panels easy to wash and sterilize.
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