When you need reliable packaging materials, one question that you might ask yourself is PP corrugated plastic waterproof. The answer to that is affirmative. Being made out of polypropylene, PP corrugated sheets do not let water in and therefore are suitable for use in wet conditions. If you are looking for all there is to know about PP corrugated sheets, then this article is for you.
1. Why Is PP Corrugated Plastic Waterproof?
PP corrugated panels are produced using polypropylene resin, which has a dense non-porous structure. Being fiberless material, there is nothing that could absorb water inside.
Therefore, your PP corrugated panels cannot:
- absorb moisture
- swell in case of getting wet
- deform because of water contact
- separate layers
- decompose with time
So, your PP corrugated panels retain their initial strength and precise dimensions even under repeated contact with moisture.
2. Difference between Water-Resistant and Waterproof
Water-Resistant
Items considered water-resistant are capable of repelling water to some degree, but not impenetrable to water penetration. For example, coated cardboard will be able to resist a little rain or a minor spillage but consistent moisture will make it absorb water, deteriorate and suffer damages.
Waterproof
Waterproof items create a barrier to water penetration under usual conditions of usage. Corrugated plastic PP is waterproof since polypropylene does not absorb moisture. So, even when exposed to humid and wet conditions, corrugated PP remains strong, stiff and functional.
3. Advantages of PP Corrugated Plastic
Waterproof Performance
When PP corrugated plastic comes into contact with moisture or rain, nothing much changes; it continues to function as it used to. The material retains all its properties of strength, shape, weight, color, and stability. Unlike cardboard, PP corrugated plastic continues to protect your goods even in humid conditions.
Suitable For Outdoor Use
PP corrugated sheets are widely used outdoors because they resist rain and moisture. They are suitable for construction protection, temporary signs, garden markers, event signage, and protective barriers. For long-term outdoor exposure, UV-stabilized PP corrugated sheets are recommended to improve sunlight resistance and extend service life.
Suitable for Humid Environments
There are many industries that operate under humid conditions in which cardboard deteriorates rapidly.
PP Corrugated Sheets can be safely used in:
- Refrigeration
- Refrigerated Warehouses
- Food Processing Plants
- Agricultural Operations
- Coastal Areas
- Seafood Packaging
As the material is moisture resistant, it remains dependable throughout the supply chain.
Easy to Wash and Reuse
One of the advantages of PP corrugated sheets is that they are easy to clean.
All you need is a wash with water and mild detergents, which makes them ideal for reuse in packaging.
Companies usually reuse these sheets over and over again to reduce packaging expenses and maintain hygiene.
Resistant to Mold and Rot
Since polypropylene does not absorb any moisture, it does not decompose, just as paper-like products do. Also, polypropylene itself is not a favorable environment for mold development. But be sure to maintain cleanliness of the surface by constantly cleaning off any dust or organic contamination.
4. Frequently Asked Questions
Q1. Is a coating needed to make PP corrugated plastic waterproof?
Not at all. This material is already waterproof because of its polypropylene structure. There is no need for additional coatings.
Q2. Does condensation damage PP corrugated sheets?
No, PP corrugated sheets are unaffected by condensation, which makes them appropriate for refrigeration and cold chain facilities where there is moisture present.
Q3. Does water affect the thickness of PP corrugated sheet?
No. Since PP corrugated sheets are not made of paper materials, they do not swell up when exposed to moisture.
Q4. Is PP corrugated plastic better than cardboard for humid environments?
Yes. PP Corrugated Plastic generally performs better than cardboard in environments that are moist since it does not expand or become weak when there is moisture.
5. Conclusion
If you need a material that will protect against water, moisture, and everyday wear and tear, then PP corrugated plastic is a great choice for your company. Its ability to keep water out protects your products from any issues that would come with using cardboard, such as swelling and weakening. Find out more about us here at PurePack.
