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 for a wide range of dry flowable products. Packed on high-speed filling equipment, the product enters the bag through a horizontal spout. When the bag is released, the internal product pressure causes the valve opening to self-seal, securing the contents without additional closure steps.

This construction creates a squared-up bag, which palletizes securely and can be printed on side or end panels for clear 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 expelled from the filling equipment, the internal forces exerted by the contents prompt the opening of the valve bag to self-seal. This self-sealing design enables secure containment and streamlined handling from fill to final delivery.

Bags with valves 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

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

Custom Tailored Packaging Solutions

Need a custom size, style, and print? We offer fully customized bag options for your business. Our range of bag styles include:

PVSE
SOM
PBOM
Webb PBOM
SOS
UN Certified
AIB

Minimum order quantities and artwork charges may apply. Lead times vary between 4 and 16 weeks depending on the bag style.

Frequently Asked Questions

What is a pasted valve stepped end (PVSE) bag?

A PVSE bag is a multi-wall paper valve bag with a stepped end design used for packaging dry flowable products. It features a valve for high-speed filling and self-seals when discharged from the filling machine, offering secure containment and stackable square dimensions.

What products are commonly packaged in valve bags?

Valve bags are ideal for building materials, chemicals, minerals, and agricultural products. Their construction supports efficient high-speed filling and safe handling of dry flowable goods like cement, fertilizer, and industrial powders.

What valve types are available for multi-wall paper bags?

Southern Packaging offers several valve types including poly lock, sonic seal, tuck-in, double trap, and reinforcing strip options. The right valve depends on your product and filling method (air, impeller, auger, etc.).

Can your multi-wall valve bags be customized?

Yes. Southern Packaging provides fully customized valve bags with options for size, number of paper plies, moisture barriers, and up to ten-color flexographic printing. Custom designs can be tailored to your equipment and application needs.