Waterproof PP Hollow Sheet Boxes Tested in Heavy Rain



HOME > Products > A New Week Begins — Let’s Test the Waterproof Performance of Our PP Hollow Sheet Boxes After Continuous Rain!

MOST POPULAR ARTICLES


Oct 09, 2025
Best PP Corrugated Plastic Sheets for Sign Printing in 2025
In 2025, PP corrugated plastic sheets (also called PP hollow sheets or coroplast) remain one of the top materials for sign printing. Lightweight, durable, and waterproof, they offer excellent printability and long-lasting performance — making them a preferred choice for advertisers, event organizers, and printing companies worldwide.

Sep 29, 2025
Why Are Advertising Companies Increasingly Choosing PP Hollow Sheets?
In the advertising and signage industry, material selection plays a critical role in both cost efficiency and visual impact. In recent years, polypropylene (PP) hollow sheets have become the preferred choice for many advertising companies. But what makes them so popular compared to traditional materials like PVC foam board or cardboard?

Sep 15, 2025
Global Application Trends of Polypropylene Corrugated Sheets
Polypropylene corrugated sheets — also known as PP hollow boards, Coroplast, or Correx sheets — are increasingly becoming a preferred material across industries worldwide. Thanks to their durability, lightweight structure, and eco-friendly properties, they are replacing traditional materials like cardboard, wood, and even metal in many applications.

This article explores the global market application trends of polypropylene corrugated sheets and how different industries are adopting them.

Aug 29, 2025
Custom Polypropylene Hollow Board Yard Signs for Christmas, Halloween, and Events
Holiday seasons and special events are always a perfect time to decorate and celebrate. Whether it’s Christmas, Halloween, birthday parties, or community events, custom yard signs made from polypropylene hollow boards (also known as Coroplast or PP corrugated plastic sheets) are becoming more and more popular worldwide. They are lightweight, waterproof, durable, and can be printed with any colorful design, making them ideal for outdoor displays.

A New Week Begins — Let’s Test the Waterproof Performance of Our PP Hollow Sheet Boxes After Continuous Rain!

A brand-new week has begun! After several days of continuous rain last week, many of our customers have been asking how well our polypropylene (PP) hollow sheet packaging boxes perform in wet weather. So today — it’s testing time!

Thanks to their waterproof, moisture-resistant, and non-absorbent properties, our PP hollow sheet boxes are ideal for outdoor use and changing weather conditions. Unlike traditional cardboard boxes, they won’t soften, deform, or lose their structure when exposed to water.

We placed our PP boxes outdoors under continuous rain and simulated heavy water spray. After hours of exposure, the boxes remained in perfect shape, with no leakage or damage. The interior goods stayed completely dry, proving their outstanding waterproof performance — making them a reliable option for export and logistics operations in all weather.

If you're searching for waterproof, moisture-proof, durable, and eco-friendly packaging solutions, our PP hollow sheet boxes are the perfect choice. Contact us for custom options and free samples!