A Pasted Valve Stepped End ("PVSE") multi-wall paper bag is a common industrial packaging style designed to package a wide variety of dry flowable products. Valve bags are packed on equipment that deposits material into the bag via a horizontal filling spout. When the bag is discharged from the packing equipment forces generated by the product inside the bag allow the valve opening to self-seal.
The valve bag construction results in a squared-up bag, which palletizes very securely and can be printed with product information on the side or end panels for easier product identification in pallet loads.
Valve bags are filled through an opening located in the top corner of the bag. Product is pumped or forced into the bag via air pressure, impeller, or auger. When the bag is discharged from the packing equipment, forces generated by the product inside the bag allow the valve opening to self-seal.
Valve bags can be equipped with different valve or “sleeve” types. Each sleeve type performs the same basic function. However, the proper sleeve type for your product and packing equipment needs to be evaluated when designing a valve bag. Our valve type capabilities include:
Need a custom size, style, and print? We offer fully customized bag options for your business. Our range of bag styles include:
Minimum order quantities and artwork charges may apply. Lead times vary between 4 and 16 weeks depending on the bag style.
For customers needing bags immediately, we maintain a substantial inventory of off-the-shelf printed and plain bags. Contact us today to learn more about our in-stock PVSE bags.