Tyvek® offers distinct advantages over paper for active packaging. In fact, Tyvek® brand materials combine the best properties of paper, film and fabric - thanks to their exceptional strength . . . excellent durability . . . and high porosity. For years, desiccant manufacturers have counted on packets and bags made of Tyvek® to give them the rapid moisture absorption they need to keep a variety of products dry. What's more, Tyvek® is a chemically inert material that won't rot or mildew.
For active packaging, styles without corona treatment and antistat coating typically are used (that is, styles with a "B[L]" suffix). That's because only untreated styles of Tyvek® meet the requirements of the FDA for direct food-contact applications where temperatures do not exceed 100°C. Also, these styles have been tested and meet the Military Specification (MIL-D-3464E) for activated, desiccant packaging.
Thanks to a new, lighter basis weight style of Tyvek® created specifically for desiccant manufacturers, you have a more cost-effective option when less strength, but greater permeability and improved visual aesthetics are required. This expanded product line gives you a range of styles of Tyvek® material to meet the varied demands of the active packaging marketplace.

Single-ply bags made of Tyvek® are the single choice in fine-powder packaging where strength and permeability are critical.
Unlike multi-wall paper bags, bags of Tyvek® won't leak during shipping and storage. Tyvek® material has exceptional burst strength and tear resistance--even the tremendous stress created by vacuum packaging equipment generally won't break a bag made of Tyvek®. Plus, its superior permeability allows air to be removed quickly while keeping valuable product inside the bag. As an added bonus, bags made of Tyvek® form tighter, more solid packaging than kraft paper bags. The result? Better stacking and more stable pallets! No matter what the industrial application, Tyvek® does a tremendous job preventing product leakage, enabling improved graphics and satisfying customers.

• Single-ply alternative to using 3 to 5 plies of kraft paper
• Buried ply strength member to replace two plies of kraft and a layer of polyethylene film
• Inner wall for perforated film bags that offers improved air permeability
• Top and bottom reinforcing patch for film bags that adds strength and improved product identification