The Most Flexible Name In Packaging

Not only does Gateway produce a wide variety of multiwall bags, we also provide recommendations on materials, bag design, graphics, printing, and delivery. Below you will find an assortment of the multiwall bags we produce.


Pinch Bottom Open Mouth (PBOM)


Made with stepped end, gusseted or flat tubes, these are the strongest bag closure available. After being filled in the packaging plant, the bag is closed on a pinch bottom field closer that reactivates the hot melt, folds the top to seal and completes the bag closure. Heat sealing can be added to this bag, with an appropriate barrier, to achieve the ultimate moisture, oxygen, grease, and infestation protection.

Features & Benefits

  • Provides best barrier protection for all bag styles
  • Available heat seal closure provides airtight packaging
  • Pre-applied hot melt means no added closing materials required

Pinch Bottom Open Mouth (PBOM)
Pinch Bottom Open Mouth (PBOM)

Mitered Pinch Bottom Open Mouth (MPBOM)


Mitered Pinch Bottom Open Mouth (MPBOM) bags create a flat bottom bag resulting in more stable positioning on the filling conveyor, improved footprint on the pallet, and a larger display panel on the shelf. Heat sealing can be added for superior protection against infestation, moisture penetration, oxygen permeation, and grease wicking.

Features & Benefits

  • Gateway’s exclusive ultrasonic mitering
  • Requires a heat sealable inner ply

Mitered Pinch Bottom Open Mouth (MPBOM)
Mitered Pinch Bottom Open Mouth (MPBOM)

Self-Opening Square (SOS)


Made from gusseted tubes, this bag’s bottom is folded to form a rectangular display panel end and pasted shut. The bag opens easily and can stand upright. After filling, the top can be sealed by gluing, taping, tying, or sewing.

Features & Benefits

  • Top can be sealed by gluing, taping, tying, or sewing
  • Graphics can be printed on the bag bottom for display when stacked

Self-Opening Square (SOS)
Self-Opening Square (SOS)

Sewn Open Mouth (SOM)


The most inexpensive bag to make and use, the Sewn Open Mouth bag can be constructed from either gusseted or flat tubes that are cut to bag length and sewn shut across one end. Paper tape is folded over the bag end and sewn to the bag as the end is closed. After filling, the open end is closed in similar fashion.

Features & Benefits

  • High-performance construction to maximize strength while reducing paper content
  • Cost effective, easy open with single thread for consumer convenience

Sewn Open Mouth (SOM)
Sewn Open Mouth (SOM)