Flat Bottom Gusset Bags
Great
366 reviews on
Trustpilot
$0.54
Flat bottom gusset bags with expanding side panels for bulkier snacks, pet treats, and chunky or irregular products.
UNLIMITED CUSTOMIZATION OPTIONS
A printing technique employing a plate to transfer designs onto paper. Ideal for extensive print jobs.
Plate-free digital printing transfers designs electronically, cost-effective for short runs.
Screen printing is a method using a mesh screen and stencil to transfer ink onto a substrate.
Quick-drying printing technique utilizing ultraviolet lights for ink curing, yielding a glossy finish.
Consisting of water-based pigments, Ensures top-notch color output with a 100% eco-friendly profile.
Fluorescent inks are vibrant, UV-reactive pigments that emit vivid colors under ultraviolet light.
Generate pure colors using specific ink formulas to consistently & precisely reproduce color in printing.
Produce metallic colors through precise ink formulations to replicate color in printing.
Premium bleached white paperboard, specially coated on one side to enhance printing & finishing.
Bleached white paperboard, coated on both sides to achieve superior printing quality and finishes.
Top-notch textured paper, perfect for adding a touch of style when wrapping up durable boxes.
A unique paper material showcasing a shiny or matte metallic laminated surface.
Bleached kraft paper crafted from a blend of new and recycled pulp, coated on both sides for optimal printing.
Kraft paper produced from a combination of new and recycled paper pulp, with coating on both sides for printing purposes.
Kraft paper dyed black, manufactured from a blend of new and recycled pulp, and coated on both sides for printing applications.
Crafted from recycled grey chipboard cardboard, also known as uncoated recycled paperboard, ideal for luxury rigid boxes.
Unique paper material showcasing a holographic laminated surface in either glossy or matte finish.
Grey chipboard, one-sided white cardboard with a smooth, printable surface, ideal for luxury rigid boxes.
Gloss lamination enhances visual appeal by applying a shiny finish, and protecting printed materials.
Matte lamination offers a non-reflective finish, providing elegant appearance to printed materials.
Made with a smooth lamination that feels like touching a peach, can choose between a satin or matte.
A UV coating is applied to a specific area and then cured using ultraviolet light to make it sturdy.
A transparent coating is applied using the CMYK printing technique, and it comes in gloss, satin, or matte.
A fast-drying coating that undergoes curing through ultraviolet light is offered in both gloss and matte.
In a printing method, dies are pressed onto the back of the material to create a raised motif.
A printing technique that involves pressing dies onto the front of the material to create a raised motif.
In foil relief printing, foil is transferred at high temperatures, often employing multiple colors.
Craft a die-cut shape with a plastic film layer, revealing a window to showcase the product inside.
We recommend the ideal material and add-ons like lamination, foiling, embossing UV, etc.
Get Free Design Support with your box 3d Renders or Send Your Design File for Printing.
Upon design approval, we’ll print and conduct quality checks before shipping the boxes to you.
Technical Specifications
| Dimensions | Available in Custom Sizes |
| Printing | CMYK, Pantone Color, Full Color & No Printing |
| Material | Food-Grade Mylar, Aluminum Foil Laminate, Kraft Mylar & Clear Mylar |
| Finish | Matte, Glossy & Metallic Finish |
| Features | Heat Sealing, Resealable Zipper, Tear Notch, Hang Hole |
| Custom Options | Clear Window, Child-Resistant Zipper, Custom Printing, Matte/Gloss Coating |
| Proof | Digital Proof, 3D Mock-Up |
| Shipping | Shipped FLAT (Free Shipping Across USA & Canada) |
| Help | For further inquiries and Quotes, contact us or email at sales@cratpackaging.com |
Flat bottom gusset bags combine a squared base with folded side panels that expand outward as the bag fills, giving bulkier or irregularly shaped products more usable volume than a flat-sided bag of the same width.
Flat Bottom Gusset Bags Specifications
| Box Style | Squared bottom with folded side gussets that expand on fill |
| Material | Film laminate, foil laminate, or kraft, single or multi-layer |
| Assembly | Pre-formed, fill and seal at packout, gussets expand under load |
| Best For | Bulkier snacks, pet treats, granola, chunky or irregular products |
| Print Options | Full-color CMYK, matte or gloss finish, foil accents |
| Order Volume/MOQ | Low minimums for new brands, bulk pricing at production scale |
| Shipping | Flat-packed cases ship nationwide from US facilities |
What the Side Gusset Does
The folded side panel is scored to stay flat when empty and expand outward as the bag fills, adding usable volume without a full increase in the bag’s flat width. That extra room matters for bulky, chunky, or irregularly shaped products that don’t pack down flat.
Who Buys This Style
Brands packaging bulkier snacks, pet treats, granola clusters, and other chunky or irregular products choose the gusset construction specifically for the added fill volume it provides over a flat-sided bag.
Eco-Friendly Options
A 2025 McKinsey survey found that over 60% of U.S. consumers pick green packaging when they have the choice, and recyclable kraft and mono-material film options are available in gusseted construction too.
Format and Print Options
Full-color CMYK printing wraps across the front, back, and gusset panels, and matte, gloss, or foil finishes give brands a premium look even on a bag built primarily for function.
Practical Advantages
The expanding gusset means more product per bag width, which can reduce shelf footprint versus a wider flat bag, and the squared base still stands upright at retail once filled.
Why Order From Crat Packaging
- Direct manufacturing with no middleman markup
- Gusset engineering sized to your product’s bulk
- Wide range of film, foil, and kraft options
- US-based production and support
- Free design proof before any print run
- Low minimums for new brands testing a design
How to Order
- Share your bag size, quantity, and product bulk
- Review a free digital proof
- Approve artwork and confirm timeline
- Receive flat-packed bags ready to fill and seal
Frequently Asked Questions
What does the gusset actually add?
The folded side panel expands outward as the bag fills, adding usable interior volume for bulkier or chunkier products without widening the bag’s flat footprint.
How is this different from a Side Gusset Bag?
This style keeps the squared, stand-up flat bottom base; a Side Gusset Bag uses gussets on a pillow-style bag without the squared base.
Is this good for granola or trail mix?
Yes, the expanding gusset is well suited to chunky, irregular products like granola clusters and trail mix that don’t pack down flat.
Can I still get a degassing valve?
Yes, a one-way valve can be added for products that off-gas, similar to our Flat Bottom Coffee Bag With Valve.
What is the minimum order quantity?
Low minimums are available for new brands, with better pricing at production scale.
Are recyclable materials available?
Yes, recyclable kraft and mono-material film options are available in gusseted construction.
Related products
1/2 Lb Candy Boxes
$0.85100 Popcorn Boxes
$0.55
