WhatsAppStable Rectangular Base
A defined box-shaped footprint supports shelf stance, facing and efficient case planning.
Premium flat-bottom pouches
Custom Flat-Bottom Bags & Box Pouches
Build a stronger shelf presence with a stable rectangular base, five printable panels, resealable zipper, one-way degassing valve, metallic foil stamping, and selective spot UV. P&M develops premium box pouches for coffee, food, snacks, pet products, supplements, and other suitable dry-product programs.
Direct answer
A flat bottom bag—also called a box pouch, box bottom bag, block bottom bag, or five-panel pouch—is a premade flexible package with a rectangular self-standing base and defined side gussets. It can combine a zipper, one-way degassing valve, high-barrier laminate, hot foil stamping, spot UV, soft-touch or matte finish, and connected artwork across five printable panels, subject to the selected material and production route.
Start with your need
What needs to happen next?
No finished specification required. Send a product or reference photo on WhatsApp.
Five Printable Panels
Connect the front, back, two side gussets and base into one coordinated brand system.
Resealable Zippers
Standard, pocket-style and other zipper concepts are matched to filling and repeated opening.
One-Way Valves
Degassing valves are positioned around coffee, roast timing, headspace, zipper and filling clearance.
Where flat bottom bags work best
Flat bottom packaging bags work well when stable presentation, broad artwork, reclosure, or efficient case space matters. Common applications include coffee, tea, snacks, granola, nuts, dried fruit, powders, supplements, pet treats, and selected pet-food weights.
View more technical specifications 6 sections
What is a flat bottom bag?
A flat bottom bag, flat bottom pouch, box pouch, box bottom bag, and block bottom bag all describe the same basic format: a premade flexible package with a rectangular base and defined side panels. It offers a flatter front, strong shelf stance, and five connected print panels. Final dimensions and structure depend on fill weight, product density, barrier, closure, and filling method.
- Stable rectangular base
- Five connected artwork panels
- Premade-bag filling and top sealing
- Retail and larger formats subject to product fit
Choose the right flat bottom bag configuration
Start with how the customer opens the bag, how the product is filled, and what protection it needs. P&M then coordinates the format, features, and print as one specification.
Zipper Bags
Standard, pocket-style, easy-open, and other zipper concepts are matched to the opening, fill line, top seal, and repeated use.
One-Way Degassing Valve Bags
Coordinate valve type and position with aroma barrier, zipper, roast timing, gas release, headspace, filling clearance, top seal, and shelf-life validation.
Coffee bag and valve options →Kraft Paper Bags
Natural, white, or black kraft faces can be combined with the heat-seal and barrier structure required by the product.
Kraft paper options →High-Barrier Bags
Select clear, metallized, or foil-laminate pathways around oxygen, moisture, light, aroma, oil, and shelf-life targets.
Flat bottom pouch vs. stand-up pouch vs. side gusset bag
Choose by product and process. A stand-up pouch is often the economical starting point. A side-gusset bag emphasizes vertical capacity for dense products. A flat bottom pouch adds a square base, defined side panels, and five-panel artwork, usually at a higher converted-bag cost. Fill weight, density, shelf footprint, opening, equipment, case count, and price decide the better format.
Compare Stand-Up Pouches
A bottom-gusset doypack can be an efficient starting point when material use, familiar filling and lower converted-bag cost matter more than a square shelf footprint.
Explore stand-up pouches →Compare Side-Gusset Bags
Side-gusset and quad-seal formats provide vertical capacity for coffee, pet food and bulk dry products, with different panel geometry and closure options.
Explore side-gusset bags →Hot foil stamping, spot UV and premium surface finishes
Premium flat bottom pouch finishing must be coordinated with the print web, lamination, pouch-making sequence, folds, seals, zipper and valve. Hot foil stamping creates a metallic or pigmented detail through qualified tooling and transfer conditions. Spot UV adds selective gloss over a matte or soft-touch-looking surface. Each finish needs a separate artwork layer, minimum line and gap review, registration allowance, rub testing, and approval on the actual film structure.
Hot Foil Stamping
Gold, silver, copper, holographic or colored foil can emphasize logos, typography, borders and patterns when coverage, tooling and fold positions are suitable.
Spot UV / Selective Gloss
Gloss coating can be registered to logos, patterns or illustration details to create visual and tactile contrast over a matte field.
Matte & Soft-Touch Surfaces
Matte film, matte varnish or a qualified soft-touch route changes sheen, hand feel, scuff visibility, foil adhesion and UV contrast.
Five-Panel Artwork
The front, back, side gussets and rectangular base are mapped as one connected system with folds, seals, zipper and valve kept clear.
Prevent flat-bottom bag problems that appear after filling
The rectangular base and five-panel artwork create more interfaces to control than a simple flat bag. Confirm the package with the actual product so base deployment, corner seals, panel shape, zipper access, valve clearance, graphics, and case packing are approved as one system.
Base does not open squarely
Review fill volume, product density, bottom geometry, corner seals, material stiffness, filling sequence, settling, and the target shelf footprint.
Review capacity and product fit →Zipper opening is too narrow
Confirm opening width, zipper style, flange position, fill line, top-seal area, consumer access, scoop or pour behavior, and closure cycles.
Compare zipper options →Valve interferes with filling or artwork
Map the valve above the expected product line and away from the zipper, final seal, key graphics, grippers, filling clearance, and case contact.
Review valve placement →Artwork breaks across five panels
Approve panel transitions, folds, gussets, base orientation, registration, foil and UV layers, seal zones, product bulge, and the assembled shelf view.
Prepare five-panel artwork →What we need to quote a custom flat bottom bag
Start with the product, fill weight, preferred dimensions or reference bag, closure, one-way valve requirement, barrier or shelf-life target, artwork count, desired foil or UV effect, and quantity. MOQ from 1,000 bags can apply to qualified full-color CMYK digital-print projects without conventional plate fees. Foil, selective UV, matte, gloss, soft touch, white ink, valves and windows are confirmed by material and production route.
- Product and target fill weight
- Approximate size or reference bag
- Zipper, valve, window, or opening needs
- Barrier and shelf-life target
- Artwork count and desired finish
- Quantity for each size and artwork
Packaging Knowledge Center
Professional guides for this application
Use these practical articles to prepare specifications, identify project risks, and ask better questions before sampling or production.
View 6 more related guides
Pouch Format GuideHow to Choose a Custom Pouch Format→Coffee Packaging GuideCoffee Packaging Bags: Valve, Barrier & Format Guide→Packaging SourcingCustom Packaging MOQ Guide→Kraft Paper Bag GuideKraft Paper Pouches: Material, Printing and Barrier Options→Coffee Bag Size GuideFlat-Bottom Coffee Bag Sizes: 8 oz, 12 oz, 16 oz and 1 lb→Zipper & Reclosure GuideZipper Options for Flat-Bottom Bags→
Frequently asked questions
What is the difference between a flat bottom pouch and a box pouch?
They are the same format under different names. Flat bottom pouch, box pouch, box bottom bag, and block bottom bag all describe a flexible bag with a rectangular self-standing base and side gussets. The production specification—dimensions, gussets, seals, material, and features—should define the package rather than the name.
When should I choose a flat bottom pouch over a stand-up pouch?
Consider a flat bottom pouch when shelf stance, square facing, five-panel artwork, or case-packing efficiency justify the typically higher converted-bag cost. For many products a stand-up pouch remains the economical starting point. Fill weight, bulk density, closure, quantity, and channel requirements should drive the decision.
Can flat bottom coffee bags include degassing valves and zippers?
Yes, qualified flat bottom coffee bags can include a one-way degassing valve and standard or pocket zipper. Valve type and position depend on the coffee, roast level, packing timing, gas release, bag size, headspace, barrier, zipper, filling, and shelf-life target. Placement, filling clearance, top sealing, zipper cycles, and valve function must be confirmed for the complete bag.
View 5 more questions
Can flat bottom pouches use hot foil stamping and spot UV?
Yes, hot foil stamping and selective or spot UV can be evaluated for qualified flat bottom pouch structures. Compatibility depends on the print film, lamination, matte or soft-touch surface, foil and coating chemistry, artwork coverage, registration tolerance, folds, seals, zipper, valve, pouch-making sequence, quantity, and approval sample. The foil and UV layers should be separated in the artwork.
Can flat bottom bags use natural, white, or black kraft paper?
Yes, qualified flat bottom bags can use natural brown, white, or black kraft paper faces. Most coffee and food structures still use inner heat-seal and barrier layers, so the exact laminate and all components determine performance and whether any reduced-plastic, recyclable, or plastic-free claim is supportable.
What is the MOQ for custom flat bottom bags?
Qualified sizes, structures, and digital-print projects can start at 1,000 bags. Actual MOQ depends on dimensions, material, zipper, valve, window, finish, production route, total quantity, and quantity per artwork, and is confirmed at quotation.
Do custom flat bottom bags require printing plate fees?
Qualified digital-print projects do not require conventional printing plates, so plate fees do not apply. Flexographic or gravure routes may require plates, cylinders, or setup charges and are evaluated for larger repeat volumes, specific materials, colors, and finishes.
Why does a flat-bottom bag lose its square shape?
The finished shape depends on product density and settling, fill level, base and gusset dimensions, corner seals, material stiffness, zipper and top seal, filling sequence, handling, and case pack. A flat-bottom format should be approved with the actual product rather than from an empty-bag photo alone.