Science & Technology Do ziploc bags block UV light? February 4, 2026 by Tanp | Leave a Comment Do Ziploc Bags Block UV Light? Ziploc bags, made from polyethylene, do not effectively block UV light. While they provide a convenient and airtight storage solution, they are not designed to protect contents from UV radiation. For UV protection, consider using materials specifically designed to block UV rays, such as UV-blocking films or containers. How […] Read more ยป