Jiangsu Jianglin Yihai New Material Science & Technology Co., Ltd. is one of the leading manufacturers and suppliers of extruded twinwall polypropylene panels in China. With abundant experience, we warmly welcome you to wholesale premium extruded twinwall polypropylene panels for sale here from our factory. All customized products are with high quality and competitive price. For quotation, contact us now.
Technical Specifications and Parameter Overview
The following specifications represent our standard manufacturing capabilities. As a direct OEM/ODM manufacturer, all parameters can be tailored to your precise application requirements.
|
Parameter |
Standard Capability |
Buyer Specification Options |
|
Material Grade |
100% Virgin Polypropylene (PP) |
Flame-retardant, Anti-static, Conductive, Food-grade |
|
Structure |
Extruded twinwall hollow ribbed profile |
Standard H-flute, Wave-flute, Custom rib density |
|
Thickness Range |
2.0 mm to 7.0 mm (+/-0.1 mm tolerance) |
Optimized per stiffness and weight balance |
|
Sheet Weight (GSM) |
300 g/m2 to 1500 g/m2 |
Adjustable to target load capacity |
|
Maximum Width |
Up to 2600 mm |
Custom slitting and trimming available |
|
Color Options |
White, Black, Natural, Blue, Yellow, Red |
Custom Pantone color matching (Delta E < 1.0) |
|
Surface Treatment |
Corona treated (Standard >= 44 Dynes/cm) |
Double-sided treatment available |
|
UV Protection |
Optional UV stabilizer (1% - 5%) |
1 to 5 years outdoor service life guarantee |
|
Processing Compatibility |
Die-cutting, creasing, sonic welding, riveting |
Custom fabricated flat sheets or fully converted parts |
|
Compliance |
ISO 9001:2015, RoHS 2.0, REACH, FDA Compliance |
Full lab test reports available per batch |
Material Comparison
Selecting the right material requires balancing structural strength, weather resistance, and total cost of ownership.
|
Feature / Material |
Corrugated Paperboard |
Solid PP Sheet |
Twinwall PP Panel (Our Solution) |
|
Moisture Resistance |
Poor (Absorbs water, collapses) |
Excellent |
100% Waterproof and Chemical Resistant |
|
Weight-to-Strength Ratio |
Moderate |
Low (Heavy material weight) |
Maximum Efficiency (Hollow rib strength) |
|
Reusability & Life Cycle |
Single-use or limited trips |
High (High cost per unit) |
50+ Repeated Cycles (Cost-effective) |
|
Converting Flexibility |
Easy to cut and fold |
Difficult to crease |
Easy to Die-Cut, Crease, Weld & Print |
|
Environmental Impact |
Recyclable |
Recyclable |
100% Recyclable Polypropylene |
Key Performance Advantages
High Strength-to-Weight Ratio
The internal hollow rib construction reduces total panel mass by up to 60% compared to solid PP sheets of equal thickness, without sacrificing structural bending resistance. Ideal for large-format signage, layer pads, and returnable packaging.
Print-Ready Surface Treatment
Untreated PP naturally exhibits low surface energy (~30 dynes/cm). We apply inline high-frequency corona discharge treatment to elevate surface tension to >= 44 dynes/cm. This guarantees superior ink anchoring for UV digital printing, screen printing, and flexography, preventing ink flaking during die-cutting or folding.
Climate and Outdoor Durability
Unprotected PP degrades under long-term solar UV radiation. By incorporating Hindered Amine Light Stabilizers (HALS), our UV-rated panels retain up to 80% of their original impact strength and color integrity after extended exposure (tailored for 1 to 5 years of outdoor usage).
Industry Applications
Reusable Packaging and Logistics: Returnable totes, box dividers, dunnage trays, and folding containers for automotive and electronics components.
Layer Pads and Interlayer Sheets: Edge-sealed or round-cornered divider plates for beverage bottle stacking and palletized handling.
Signage and POS Displays: Waterproof outdoor directional signs, election boards, retail displays, and real estate signage.
Agricultural Packaging: Moisture-proof, chemical-resistant produce crates for fresh fruits, asparagus, and nursery plants.
Building and Surface Protection: Impact-resistant floor protection sheets, wall barriers, and temporary site partitions during construction.
Fabrication and Custom Converting Services
Precision Slitting and Blade Cutting: High-speed CNC cutting for precise sheet dimensions and smooth edges.
Die-Cutting and Creasing: Custom tooling for intricate geometric shapes, boxes, and folding partitions.
Edge Sealing and Ultrasonic Welding: Sealed edges prevent dirt, water, and debris accumulation in hollow flutes (critical for food and cleanroom packaging).
Custom Assembly: Mechanical riveting, handle punching, and corner reinforcement installation.
Quality Control and Production Assurance
To ensure batch-to-batch consistency for automated converting, every batch undergoes strict lab verification before shipment:
Grammage and Thickness Check: Online laser thickness monitoring and manual GSM weighing.
Surface Energy Testing: Dyne pen testing on every production batch.
Drop Impact and Flute Crush Testing: Evaluation of compressive strength to ensure stacking reliability.
Color Consistency: Spectrophotometer color matching to keep Delta E values within strict tolerances.
FAQ
Q: Why is GSM (Sheet Weight) as important as Thickness?
A: Thickness determines the visual gap, but GSM (grams per square meter) determines structural density, wall thickness, and overall strength. Two 4mm panels can perform completely differently if one is 600 GSM and the other is 1000 GSM. We help clients optimize GSM to save material costs while achieving required load capacities.
Q: How long does the surface corona treatment last for printing?
A: Under standard warehouse storage conditions (cool, dry, away from direct sunlight), our corona-treated panels maintain print-suitable Dyne levels (>= 40 dynes/cm) for up to 6 months. For immediate high-volume printing, direct post-production processing is recommended.
Q: Can you seal the edges of twinwall PP panels?
A: Yes. We offer thermal edge sealing and ultrasonic welding. Sealed edges prevent dust, liquids, and bacteria from entering the internal flutes, making them ideal for hygienic packaging and reusable beverage layer pads.
Q: Are twinwall PP panels environmentally friendly and recyclable?
A: Yes, 100%. Polypropylene is a fully recyclable resin. Unlike paperboard that degrades quickly or single-use plastics, twinwall PP panels can be reused dozens of times and eventually melted down to produce new plastic products, significantly reducing total environmental impact.
Q: What is your standard lead time and Minimum Order Quantity (MOQ)?
A: For standard stock specifications (e.g., standard white/black sheets), our MOQ is 1,000 kg with a lead time of 7-10 business days. For customized colors, special GSM, UV protection, or custom die-cut designs, lead time is typically 12-15 business days following sample approval.
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