Introduction

PP Hollow Corrugated Sheet is a lightweight twin-wall polypropylene board manufactured through continuous extrusion forming. The hollow structure reduces material weight while maintaining good impact resistance and structural rigidity.

Core Specifications

Feature	Details
Material	100% Virgin Polypropylene (PP)
Thickness	2mm – 8mm (Customizable)
Weight (GSM)	250g/m² – 3500g/m² (Tolerance within±2%)
Standard Size	1220x2440mm, 2000x1000mm (Custom sizes available)
Corona Treatment	46 - 52 Dynes (Ensures superior ink adhesion)
Optional Additives	UV Resistant, Anti-Static, Flame Retardant, Conductive

Why Choose Our PP Hollow Corrugated Sheet

Virgin PP material reduces brittleness and maintains stable impact resistance.

Twin-wall hollow structure provides lightweight performance with good rigidity and compressive strength.

46–52 dyne corona treatment supports stable UV, screen, and digital printing adhesion.

Moisture-resistant and resistant to acids, alkalis, oils, and common industrial chemicals.

SGS, RoHS, and REACH compliant options available.

Secondary Processing & Customization

Precision Die-Cutting: Accurate shapes based on your CAD drawings.

Edge Sealing: Fully sealed edges for hygiene and increased board stiffness.

Ultrasonic Welding & Riveting: For high-strength box assembly and dividers.

Custom Printing: High-resolution branding and warning labels.

Global Applications

Packaging: Reusable transit boxes, divider sheets, and dunnage.

Advertising: Yard signs, POS displays, and exhibition boards.

Construction: Floor/wall protection sheets and waterproofing membrane.

Agriculture: UV-protected tree guards and fruit picking crates.

Manufacturing & Quality Control

Our facility operates 5 continuous automatic extrusion lines with integrated laser thickness calibration.

Our 5-Step QC Protocol:
Raw Material Inspection: Purity and MFI testing.
Hourly Spot Checks: Thickness and GSM consistency during extrusion.
Dyne Testing: Surface tension verification every 500 meters.
Flatness & Visual Check: Ensuring no warping or flute deformation.
Stress Testing: Impact and compression resistance sampling per batch.

FAQ

Q: What are the primary benefits of 100% virgin PP over recycled material?

A: Virgin PP offers 30% higher impact strength, zero odor, and prevents the brittleness/cracking common in recycled sheets.

Q: Are your sheets chemical resistant?

A: Our PP material is resistant to most oils, solvents, and water, making it ideal for industrial and agricultural use.

Q: How do you ensure printing quality on the surface?

A: We apply Corona treatment (46-52 Dynes) to ensure superior ink adhesion for screen and UV digital printing.

Q: How do you control quality during production?

A: We perform hourly thickness/GSM checks and 24-hour stress tests on every batch.

Q: Are samples available for testing?

A: We provide free A4-sized samples. Custom-sized or printed samples involve a small fee.

Q: How are the sheets packed for international shipping?

A: We use PE film wrapping or wooden pallets with corner protectors to ensure zero damage during transit.

Q: Does the Corona treatment degrade over time?

A: All corona-treated surfaces naturally decay, but our sheets are treated to remain optimal for printing for 6 months when stored in a cool, dry place.

Q: Can you match a specific brand color?

A: Yes, we provide precise color matching based on Pantone or RAL codes with a consistent batch-to-batch color stability.

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