Multi-Wall Pinch Bottom Open Mouth Bags

Superior Sealing, Maximum Protection

A Pinch Bottom Open Mouth ("PBOM") multi-wall paper bag is a common industrial packaging style designed to package a wide variety of dry flowable products. A PBOM bag offers the best sealing capabilities in the multi-wall paper bag family. Open Mouth bags are packed on equipment that deposits material into the bag via hopper or vertical filling spout. Once the bag is filled, a pinch sealer closes the bag by activating pre-applied glue on the bag’s opening with hot air, folding the open end over to complete the closure, and pinching the fold closed until the glue cures. The result is a completely sealed package. Pinch-style bags can be used on manual or fully automated equipment.

Features & Benefits

Ideal for packaging food, pharmaceuticals, pet food and chemicals
20-100lb Capacity
Manufactured with 3-6 plies of paper
Pre-Applied Adhesive for Heat seal closure
Multiple moisture barrier options
Foil and Mylar liners available for odor protection
Available with a PE coated inner ply, a free film between the paper plies, or greaseproof paper
Available with Easy-Open feature
Leak-proof design capabilities
Flexographic printing in up to ten colors
Matte or glossy finish
UN Certification
Fully customizable for desired application

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

Webb Pinch vs. PBOM

Webb Pinch

A Webb Pinch Open Mouth (SSWPT) bag is a combination of 2 common multi-wall bag styles. A Webb Pinch bag has an SOS (Self Opening Satchel) rectangular base and a PBOM top (stepped top with pre-applied hot melt). Webb bags can be self-standing and offer better palletizing functionality that standard PBOM bags.

PBOM

A PBOM bag is formed by folding and hermetically sealing the top and bottom openings of the bag. A filled PBOM bag is rectangular on the bottom and tapered on top. PBOM and Webb bags offer a variety of barrier options for optimal product protection.