Why Choose Our Blank Corrugated Plastic Signs?
- No More Fading: Sunlight resistant and won’t become brittle or warp in rain or humidity.
- Flat & Smooth Surface: No waves or imperfections to ruin your print.
- No Transport Broken: Package with corner protectors and secure bundling.
- Custom The Exact Size You Need: Customized size, thickness, and color.
- Looking the same as the actual material: Fast sample service for you to touch it, test it.
- Corona-Treated for Superior Ink Adhesion: Ready for vibrant screen or UV digital output.
What Are The Blank Corrugated Plastic Signs?
Blank corrugated plastic signs, often called “coroplast blanks,” are the essential raw material for the sign and display industry. Made from lightweight, twin-wall polypropylene sheets, they provide the ideal balance of rigidity for handling, flatness for printing, and durability for outdoor use.
As a manufacturer, Purepack has been serving customers in over 120 countries since its establishment in 2013. With rich exporting experience, we can provide durable blank corrugated plastic sign solutions to meet your specific requirements.
Choose Your Perfect Blank Corrugated Plastic Signs
We have many kinds of blank corrugated plastic signs for customers. There are some of the common types our customers use:
The industry standard for political campaigns, real estate, and local advertising. Available in 4mm thickness for perfect stiffness and stakeability.
For bigger messages like contractor site signs, event banners, and retail window displays. We offer thicker options (6mm, 8mm) for added wind resistance.
Two sheets laminated together for double-sided signs, providing a seamless edge appearance.
UV-resistant function is added for long-term outdoor exposure, ensuring printing remains vibrant for months or even years.
The Key Features of Blank Corrugated Plastic Signs
They are much lighter than wood or foam board, reducing shipping costs.
The twin-wall channels can be inserted with stakes for yard signs easily.
Can be cut with a utility knife, die-cut, or welded easily.
The material polypropylene is waterproof and can withstand humid environments.
Source Factory, No Intermediaries
From polypropylene raw materials to corrugated plastic sheets, and then to cutting and welding, to the final blank corrugated plastic signs, everything is done in our own factory. This means you can get a first-hand price without any middleman, and we have absolute control over quality and delivery time.
We Can Cut Whatever Size You Want
We have 13 sets of high precision die cutting forming devices, whether you want 18×24 inch campaign sign boards or any strange-shaped parts, our CNC cutting machine directly cuts according to the drawing. In addition to the waterproof and corrosion-resistant properties of the PP corrugated board itself, we can also add a UV resistance function. The printed logo can last for several months outdoors without fading, making your sign look new for the entire election season or sales cycle.
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Why You Choose Purepack?
We are a manufacturer focused on the production of plastic hollow boards and blank corrugated plastic signs. We can provide one-stop solutions for your specific requirements.
Our Cambodia factory has given the price of blank corrugated plastic signs a great advantage by integrating advanced production technology with Cambodia’s lower labor cost, so as to maximize customer benefits. As our customers, what you can get is not only products and processing, but more importantly, service and commitment with 100% engagement.
Blank Corrugated Plastic Signs Have Various Applications
Here are some of our cases:
Plastic corrugated yard signs are durable, weather-resistant signs that last through seasons.
Quick-turnaround, mass quantities of corrugated plastic campaign signs for election cycles.
Corrugated plastic yard sale signs can be used for POP displays, window signs, and sale banners.
Corrugated plastic real estate signs are safety, directional, and project information boards.
Corrugated plastic display boards are used for backdrops, directional signs, and informational panels.
- Technical Data
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| Product Name | Blank Corrugated Plastic Signs |
| Typical Thick | 2mm-12mm, or customized |
| Standard Size | 12×18 | 12×24 | 18×24 | 24×24 | 24×36 | 24×48 | 36×48 | 48×96(1220mm×2440mm) or customized |
| Special treatment | UV-resistant, flame-retardant |
| Color | Black, white, blue, transparent, red, green, yellow, or customized |
| Packaging | Film ordinary packing or according to the customer’s requirements |
| Certificate | ISO9001, ISO14001, SGS, TUV |
| MOQ | 1000 pieces |
Testimonials
“As a packaging distributor, consistency is everything. Purepak’s blank corrugated plastic signs have the same quality during the different orders, which makes planning for our clients so much easier.”
Ezra MannProcurement Manager, EU Distributor“The UV-resistant blank corrugated plastic signs for our outdoor campaign held up perfectly for 6 months under direct sunlight. Great product and reliable delivery.”
Janet LeachPrint Shop Owner, UK
For most cases with a sturdy H-stake, 4mm is perfect—it’s lightweight, cost-effective, and rigid enough. For larger signs (24″x36″+) or in windy areas, we recommend 6mm for extra durability.
Yes! We have flexible MOQs. We can accept small custom orders, not just big orders in bulk.
The common method is using plastic H-stakes. For temporary installation, heavy-duty zip ties work well. We can also provide guidance for other installation methods.
How to prevent outdoor corrugated plastic signs from fading and being damaged?
Have you ever experienced a corrugated plastic signs that faded, cracked, or became brittle within a few months? For your company and your customers, this is not only a matter of aesthetics, but also a waste of resources and damage to brand image.
However, such damage can be prevented. From material selection to final installation, you can ensure that your outdoor corrugated plastic signs remains sturdy and aesthetically pleasing throughout its entire lifespan. So, how can we prevent it? Let’s first take a look at the reasons for the fading and damage of corrugated plastic signs.
1. Sunlight radiation
Sunlight is the main cause of outdoor plastic signs aging. The following is the process that occurred:
Fading: Ultraviolet radiation can damage pigments, dyes, and the plastic itself in printing. This causes the color to lose its intensity and fade – blue and red are usually the first to fade.
Brittle and cracking: Ultraviolet radiation can reduce the flexibility and tensile strength of polypropylene materials. Make it dry, fragile, and prone to cracking at stress points.
Powdering: The surface breaks down into small powdery residues, making the label appear dull.
The direct cause of premature failure is the use of ordinary corrugated plastic boards that cannot resist UV when placed outdoors.
2. The solution starts from the most basic part: blank corrugated plastic signs
Foundation: Starting from UV-stabilized materials
The most effective way to combat sunlight damage is to incorporate UV resistance into the material from the outset.
What is it?
UV-stabilized polypropylene is a special composite material in which UV inhibitors or stabilizers are masterbatched (thoroughly mixed) into the original polypropylene resin before the extrusion process begins. The mixture is then fed into the production line to ensure that the protective agent is evenly distributed throughout the entire thickness of the sheet during the forming process.
Why is it better than post-processing?
Built in, not surface: Protection is inherent in the material. It does not scrape off, peel off, or wear over time.
Uniform protection: Due to the stabilizer mixed into the melt, every millimeter, front and back of the board are protected to the same extent.
Long-term effectiveness: These stabilizers significantly slow down the degradation process by absorbing ultraviolet light and continuously converting it into harmless heat.
When purchasing blank corrugated plastic signs, if it is a long-term outdoor exposure project, please specify the UV stabilization level.
Execution: Wise Printing and Post-Processing Choices
Even with UV-stabilized substrates, your choices in printing and post-processing are crucial.
- Choose outdoor-grade ink: For screen printing, please use ink with high UV resistance. For digital printing, UV curable ink is an excellent choice.
- Consider protective film coating: Adding a transparent film coating on the printed pattern can create a strong physical barrier. It can resist UV rays, slight wear and tear, graffiti, and moisture.
Installation and Maintenance: The Final Guarantee
Proper installation to reduce stress:
Avoid excessive tightening: During installation, do not tighten too tightly to prevent the material from cracking more easily during thermal expansion and contraction.
Supporting large signage: For signage larger than 24 inches x 36 inches, ensure that there is sufficient support on the back to prevent excessive bending in strong winds.
Use appropriate plugs: For courtyard signage, choose plugs that can fit perfectly into the corrugated channel without being forcefully inserted. Wide and flat insertion rods can better distribute pressure than thin iron wires.
Simple cleaning to extend lifespan:
Regular cleaning helps to protect.
Gentle cleaning: Use a soft cloth or sponge and wipe with warm water.
Thoroughly rinse: Avoid letting soap residue dry on the surface.
Do not use abrasive cleaners, scouring pads, irritating chemicals, or high-pressure cleaners, as they can scratch the surface and damage the printing.
Conclusion: Proactive strategies for creating lasting impressions
Preventing the fading and damage of outdoor corrugated plastic signage does not rely on a single method. It is a holistic solution that starts with selecting raw materials – especially UV -stabilized polypropylene sheets – by combining this high-quality substrate with outdoor durable ink, considering protective coatings for critical applications, and following reasonable installation and maintenance practices, you can transform a disposable label into a durable asset. This method saves the cost of reprinting, maintains your professional image, and provides true value to your customers – their information relies on the logo to remain prominent and bright in the wind and rain.
