The vernal equinox, a.k.a. first day of spring, has come and gone and we are now seeing longer daylight hours and experiencing more direct rays from the sun. While most of us enjoy a little more light in the mornings and evenings, extended exposure to sunlight and the damaging effects of ultraviolet rays cause millions of dollars of material loss every year. So how does this affect bulk bag performance? Can you store bulk bags outside?
FIBC, or bulk bags, are made from woven polypropylene fabric, a polyolefin product. Exposure to sunlight can have adverse effects on the useful life of polyolefin products. UV radiation can break down the chemical bonds in the polymer causing color fading, cracking, and deterioration of the fabric. This deterioration affects the impact strength, tensile strength, elongation, and other properties that can ultimately cause a bulk bag to fail.
The effects of UV degradation on materials that require a long service life can be measured with accelerated exposure tests. To help understand the relative speed of these accelerated exposure tests, it is possible to simulate 63 years of natural UV radiation exposure in a single year.
BAG Corp Super Sack® containers use a critical UV stabilizing additive to improve the resistance against degradation by sunlight. In addition to the woven polypropylene fabric, BAG Corp performs extensive testing to qualify other materials, such as sewing threads and webbing, which are also used in the manufacturing of our bulk bags. Super Sack® containers are built to last, with heavy-duty construction that retains 50% tensile strength after 200 hours of accelerated UV exposure.
Ultraviolet radiation and other adverse conditions will weaken an FIBC and affect its performance, so it is not recommended that you store bulk bags outside.
To purchase Super Sack® containers with UV stabilization, visit our online store. Immediate shipping is available from our stocked warehouse. For assistance developing an inventory stocking strategy or if you require a custom bulk bag solution, you can speak directly to one of our expert product sales specialist to assist.
About BAG Corp:
BAG Corp is a bulk bag industry leader, innovating processes through experience. As a developer, manufacturer, supply chain and logistics provider, we move product around the world and meet customer inventory needs every day. BAG Corp services global brands, represented across a broad spectrum of industry verticals.