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Unmatched Durability and Load-Bearing Strength for Bulk Potting Soil Handling
Tensile Strength and Tear Resistance Under Real-World Bulk Transport Conditions
Woven polypropylene bags are the best option for growers processing large amounts of potting soil. For example, consider the numerous and varied mishandling scenarios. Bags are probably going to be punctured, and ripped, and handle seams are going to be damaged from loading and unloading multiple times into and out of forklifts, and Cross Conveyor systems, and from bumping Pallet Jacks. In independent testing, woven polypropylene showed to puncture 3 times less than laminated competitors (as per ASTM D4632). The woven fabric design allows for it to be used to capture the force of a snag from machinery and spread it out across the bag surface, preventing the bag from fracturing. Real evidence also exists from nurseries. When switching to woven polypropylene from traditional polyethylene bags, nurseries experienced a drastic reduction in the messes created by bag and product spills. Overall, 92 percent reduction in spills created less waste and allowed for cleaner end-of-day cleaning and product collection.
Engineered for improved load-bearing ability, these bags are industry leading for high density potting mixes.
Cross laminated base gussets minimizes seam stress; reinforced lift points ensure load control handles and walkers of 50–60 kg, keeping additional lift and load bolts from bulging, bottom blowouts and jamming of automated processes in nurseries reliant on load integrity for safety and throughput.
New moisture and pest control for potting soil integrity
Balanced Breathability: Micro-ventilation Mold Prevention
PP woven bags have micro pores for airflow to stop stagnant conditions that can lead to anaerobic mold while retaining sufficient water for microbes and adequate root development. Moisture retention sufficient for plant root development (3-5% of plant target moisture) was achieved in bags after 2 months of testing. Orientation of moisture-sensing potting soil to plant target moisture improved retain of moisture of variable porous bags. Nonwoven bags-dry soil. Woven bags- conceal and drown soil.
Field-Validated Pest & Mold Resistance: 42% Decreased Occurrence Compared to Laminated PE Bags
So why is polypropylene particularly good against microbes? It’s able to do this because of how the fibers are structured. They have an intrinsic resistance to microbes, but due to the tight structure of the individual fibers as well, this acts as a physical barrier to microbes. This was demonstrated in a 14 month-long study where researchers tracked 20,000 bags across different nurseries, and the results were impressive and demonstrated that bags made of polypropylene were able to reduce and inhibit mold growth on bags in a business-as-usual handling and storage manner and observed a 42% reduction in mold growth on bags made of polypropylene vs regular laminated polyethylene. And UV stabilized pp is also worth mentioning. They will not break down due to exposure to fertilizer and UV sun exposure, and so will continue to provide adequate functionality after being in wet conditions for a long time.
Resilience to Chemicals, UV, and Heat
Inert Compatibility with Standard Fertilizers and Organic Amendments
When polypropylene woven bags are exposed to nitrogen fertilizers, phosphorus fertilizers, and compost blends, they remain chemically inert, unlike polyethylene woven bags, which will degrade and/or leach some of their components when in contact with these materials for a long time. This molecular stability will maintain the nutrient retention of the soil blend that is in the bag throughout the storage and transport, and contributes to the effective amendment performance during the growing seasons.
UV Stabilized PP has increased outdoor shelf life by 3x - - ASTM-D4329 Tested
UV polypropylene shows that after 1500 hours of UV exposure, (which is the approximate equivalent of 1.5 years of direct sunlight exposure in normal temperature regions), it retains about 85% of its original tensile strength. This gives us the capability of producing items that would last 3x longer than previously outdoors. A field test at a nursery demonstrated 41% less bag failures with these bags. They also perform in temperature extremes from -20 degrees Celsius to +60 degrees Celsius.
Brand-Ready Customization and Shelf-Life Protection for Potting Soil Bags
PP woven bags protect their precious marketing and brand information and the legally required side of the bags as well as the information side of the bags. Bags can have their brand information and thousands of color prints along with additional marketing information including nutrition facts printed on the bag. Bags are tough, and the prints will not deteriorate. Bags have an internal unique ventilated UV stabilization Even bags will have an even airflow, and will help the contents not to dry out or mold when the bags are in long term storage. Field tests show that good packed goods will sell before and with less spoilage in comparison to traditional packaging. The packed goods did sell 27% longer compared to the control goods. The packaging and marketing will improve the overall quality.
FAQ
What are the woven polypropylene bags advantages for potting soil?
PP woven bags are: tough, long lasting, have strong load bearing capacity, and they have high levels of resistance against tearing, puncturing, and exposure to UV light. They also offer protection for the potting soil against pests, and provide an environment for the soil to be protected from the UV light, even dry soil that will be protected also.
What about moisture and mold?
These bags utilize Micro-ventilation that prevents the soil from drying out, and prevents the soil from drying out as well, and facilitates the soil’s biological activity that contributes to root system development.
Can these bags be customized for branding?
Absolutely, polypropylene bags can be printed with high resolutions designs of all CMYK and Pantone colors, which are UV and abrasion resistant, and therefore, create long-term visibility for your brand.