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Pactrum Flexible Packaging
Pouch Formats 4 min read September 2026

What Is a Flat Bottom Pouch? Architecture, Panels & Stability

Explore flat bottom box pouches: pre-formed rectangular base, four corner vertical seals, five printable display panels, and high volumetric efficiency.

Quick Answer

A flat bottom pouch (also known as a box pouch or block bottom pouch) is a flexible container featuring a completely flat rectangular base and four vertical corner seals. Unlike curved bottom gussets, the pre-formed base allows the pouch to stand with exceptional vertical stability on retail shelves while providing five uninterrupted display panels for branding.

Essential Key Points
  • Pre-formed flat rectangular base eliminates forward or backward tipping.
  • Offers five distinct printable faces: front, back, two side gussets, and bottom base.
  • Provides 20% to 30% higher volume capacity compared to standard stand-up pouches of the same face dimensions.
  • Standardized in Pactrum catalogue across 15 SKUs (L045–L059) with resealable zippers.

Comparison Overview

Pactrum DimensionMetric (mm)Available FinishesClosureCommon Fill Capacity
4 × 8 in 100 × 200 mm Transparent, Metallised, Hybrid, White, Matt White Integrated grip zipper 100g – 250g specialty roast
5.5 × 9 in 140 × 230 mm Transparent, Metallised, Hybrid, White, Matt White Integrated grip zipper 250g – 500g coffee / grains
6.5 × 10.5 in 165 × 265 mm Transparent, Metallised, Hybrid, White, Matt White Integrated grip zipper 500g – 1 kg pet food / bulk

The Geometry of 3D Box Packaging

The flat bottom pouch represents the convergence of a folding carton's structural presence with the lightweight, high-barrier efficiency of flexible packaging laminates.

Five Printable Panels for Brand Storytelling

Standard stand-up pouches provide only two display surfaces (front and back). Flat bottom pouches feature five dedicated panels: front, back, left side gusset, right side gusset, and bottom panel. This allows brands to dedicate the front panel exclusively to visual branding while placing regulatory data, nutrition tables, and barcodes on the sides.

Shelf Stability & Carton Footprint

Because all four vertical edges are heat-sealed, the pouch forms a rigid cuboid structure. When placed in cartons or on store display shelves, flat bottom pouches pack tightly without dead air space, reducing freight costs and maximizing retail facings.

CATALOGUE DISCOVERY

Recommended Flat Bottom Pouches

Standardized specifications relevant to What Is a Flat Bottom Pouch?.

View all 81 SKUs

Frequently Asked Questions

Why do coffee roasters prefer flat bottom pouches?

The flat base keeps tall coffee bags completely upright on narrow supermarket shelves, while the side gussets provide dedicated space for roast notes, origin stories, and brewing instructions without cluttering the front face.

Can flat bottom pouches be heat sealed above the zipper?

Yes. All Pactrum flat bottom pouches feature heat-sealable polyethylene inner liners that create an airtight hermetic seal using standard impulse or continuous band heat sealers.

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