Waterproof Polypropylene Hollow Sheets

Waterproof Polypropylene Hollow Sheets

The twin-wall hollow structure combines low weight with structural rigidity, while polypropylene provides excellent resistance to water, moisture, and mild chemicals. Sheet thickness, grammage (GSM), dimensions, color, printing, cutting, and other conversion options can be fully customized according to your application.
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Description

Jiangsu Jianglin Yihai New Material Science & Technology Co., Ltd. is one of the leading manufacturers and suppliers of waterproof polypropylene hollow sheets in China. With abundant experience, we warmly welcome you to wholesale premium waterproof polypropylene hollow sheets for sale here from our factory. All customized products are with high quality and competitive price. For quotation, contact us now.

 

Waterproof Polypropylene Hollow Sheets

 

 

Lightweight PP hollow sheets for moisture-resistant packaging, product separation, surface protection, and industrial fabrication.
The twin-wall hollow structure combines low weight with structural rigidity, while polypropylene provides excellent resistance to water, moisture, and mild chemicals. Sheet thickness, grammage (GSM), dimensions, color, printing, cutting, and other conversion options can be fully customized according to your application.

 

Material & Structural Characteristics

 

 

PP Resin Properties: Extruded using high-grade polypropylene copolymer or homopolymer resins. It features an extremely low moisture absorption rate (<0.01% per ASTM D570), high resistance to most acids and alkalis, and a light nominal resin density of ~0.90-0.91 g/cm3.
Twin-Wall Rib Geometry: The hollow profile significantly reduces raw material weight compared to solid plastic sheets of equivalent thickness while maintaining flexural stiffness.
Procurement Note: Sheet performance depends on both overall thickness and sheet weight (GSM / g/m2). Thickness should always be evaluated alongside grammage and internal rib structure.

 

Key Performance Attributes

 

 

100% Waterproof & Washable: Will not absorb moisture, lose structural integrity, or soften in wet or high-humidity environments. Non-porous surfaces allow easy washing or steam cleaning for closed-loop returnable systems.
High Strength-to-Weight Ratio: Reduces overall packaging weight to lower transportation costs while maintaining durability.
100% Recyclable: Fully recyclable within standard polyolefin recycling streams.

 

Technical Specifications

 

 

Parameter

Specification / Standard Range

Material

Polypropylene (PP Copolymer / Homopolymer)

Structure

Twin-wall fluted rib profile

Thickness Range

2.0mm to 12.0mm (Standard: 2mm, 3mm, 4mm, 5mm, 8mm, 10mm)

Sheet Weight (GSM)

300 g/m2 to 3000 g/m2 (Customizable per thickness)

Maximum Width

Up to 2400mm

Length

Standard sizes (2440mm, 1830mm) or custom continuous lengths

Standard Colors

White, Black, Blue, Grey, Natural/Clear, Yellow, Green, Red (Custom RAL/Pantone available)

Surface Treatment

Corona treatment (38 - 46 dynes/cm) for print ink adhesion

Special Additives

Anti-UV (ASTM G154), Anti-static (10^6 - 10^9 Ohm), Conductive, Flame Retardant (UL94 V-0/V-2)

Conversion Options

Slitting, die-cutting, creasing, sonic welding, edge sealing, printing

 

Printing, Conversion & Processing Options

 

 

Printing: Flatbed UV, screen, and flexographic printing. Corona treatment ensures long-lasting ink adhesion for branding, barcodes, or warning labels.
Edge Sealing: Thermal or ultrasonic edge sealing prevents dirt, dust, and liquids from entering the hollow flutes, meeting hygiene standards for food and pharmaceutical logistics.
Fabrication Methods: Precision die-cutting, creasing and folding for box assembly, sonic welding, riveting, slotting, and custom corner rounding.

 

Applications Guide

 

 

Returnable Industrial Packaging: Collapsible containers, tote boxes, internal partitions, and protective sleeves for closed-loop supply chains.
Pallet Layer Pads & Separators: Positioned between stacked layers of glass bottles, cans, or industrial items to distribute weight and increase stability.
Automotive & Electronics Handling: Anti-static or conductive grades protect sensitive electronic components (ESD protection) and precision parts during transit.
Agriculture & Horticulture: Weather-resistant fruit and vegetable crates, as well as tree guards treated with UV stabilizers for outdoor exposure.

Construction & Surface Protection: Temporary protective floor, wall, and countertop coverage during renovation or heavy installation work.

 

Customization & Material Additives

 

 

UV Stabilizer: Prevents yellowing and material degradation under direct sunlight (typically 1% - 3% UV additive).
Anti-Static Grade: Controls surface resistivity between 10^6 Ohm and 10^9 Ohm.
Flame Retardant: Formulated to meet UL94 standard requirements for indoor construction or transportation safety.

 

Quality Assurance & Testing Standards

 

 

Dimension & Weight Control: Precision micrometer and electronic balance verification across sheet width.
Edge Crush Test (ECT): Evaluated according to ISO 3037 / TAPPI T 811 standards for stacking strength.
Flexural & Impact Resistance: Flexural properties tested per ISO 178 / ASTM D790; Izod impact resistance tested per ISO 179 / ASTM D256.
Dyne Surface Energy: Dyne pen testing ensures surface tension reaches >= 40 dynes/cm prior to printing.
Traceability: Fully documented batch inspection reports, raw material certificates, and customer reference sample matching for repeat orders.

 

Supplier Evaluation Checklist

 

 

Procurement managers evaluating our manufacturing capabilities can request the following verification details:
Production Capacity: Monthly extrusion output and lead times for high-volume orders.
Equipment & Process Audit: Extrusion lines, automatic die-cutting machines, printing setups, and ultrasonic welding stations.
Quality Documentation: ISO 9001:2015 certifications, RoHS / REACH compliance statements, and FDA-compliant resin certificates for food contact.
Commercial Terms: Sample lead time (typically 1-3 days for standard sheets), custom tooling options, trial order MOQs, and standard export packaging.

 

Request for Quotation (RFQ) Guidelines

 

 

To receive an accurate quotation, please provide the following project details:

  • Application: (e.g., Layer pads, automotive partitions, outdoor signage)
  • Sheet Dimensions: Thickness (mm), Width (mm), Length (mm)
  • Target Grammage (GSM): g/m2 or required load rating per sheet
  • Color & Surface Requirements: Color, Corona treatment, UV protection, or ESD specifications
  • Secondary Operations: Printing artwork, edge sealing, die-cutting CAD drawings, or creasing lines
  • Order Quantity: Initial trial order volume and estimated annual consumption
  • Destination & Shipping Terms: FOB, CIF, or DDP requirements

 

FAQ

 

 

Q: Are polypropylene hollow sheets completely waterproof?

A: Yes. Polypropylene is inherently hydrophobic with minimal water absorption (<0.01%). The base material will not degrade, warp, or weaken when exposed to water or high humidity.

Q: 2How do I determine the correct sheet thickness and weight (GSM)?

A: Thickness determines structural space and span fit, while sheet weight (GSM) determines structural rigidity and load capacity. For example, a 4mm / 750 GSM sheet offers significantly higher stiffness than a 4mm / 450 GSM sheet.

Q: Can PP fluted sheets replace traditional paper corrugated boxes?

A: Yes. In closed-loop returnable packaging systems, a PP hollow sheet container can complete 20 to 50+ reuse cycles. This drastically lowers the total cost per trip and reduces material waste compared to single-use paper corrugated boxes.

Q: What custom additives can be incorporated during extrusion?

A: We offer UV stabilizers for extended outdoor usage, permanent anti-static or conductive additives for electronics handling, flame retardants for building or transport safety, and custom color masterbatches.

Q: What is the standard sample lead time?

A: Stock sheet samples in standard thicknesses (2mm to 6mm) and standard colors can be dispatched within 24 to 48 hours. Custom die-cut components or printed prototypes typically require 3 to 5 business days after drawing approval.

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