Industrial Multi-Wall Paper Pasted Valve Bags

Built for Speed and Durability

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 Types

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:

Double Trap
Reinforcing Strip
Paper Tube Insert
Reinforced Poly Lock
Tuck-In
Hinged Tuck-In
Sonic/Heat Seal
Double Trap Sonic Seal
Reduced Sleeve

Paper Insert

Poly Lock

Sonic Seal

Tuck In

Paper Types

Traditional Kraft Paper	High Performance Extensible Paper
Manufactured from short wood fiber	Manufactured from long wood fiber
Heavy, coarse sheet	Smooth sheet
Strength through high basis weight	Strength through superior energy absorption
Limited stretch	6-7% stretch
Low levels of porosity	High levels of porosity
Limited energy absorption	Superior energy absorption
Ideal for 3-4 ply bag construction	Ideal for 2 ply bag construction