Our custom flat bottom side gusset bag is a high-performance packaging solution tailored for premium products (like the coffee pouch shown). Its flat-bottom structure ensures stable shelf display, while expandable side gussets accommodate varying bulk capacities. The sleek black barrier film (as pictured) blocks light and moisture to preserve product quality, paired with crisp multi-color printing (white brand text, red info blocks, beige detail sections) that makes your brand identity stand out.
- Structural Details: Stable flat base + expandable side gussets for flexible capacity
- Material Performance: Opaque barrier film (light/moisture-resistant) for freshness retention
- Printing Quality: Sharp multi-color reproduction (text, logos, info blocks) on dark film

Explore more gusset packaging options in our flat bottom pouches collection.
Key specifications of our custom flat bottom side gusset bag (fully customizable):
| Attribute |
Details |
| Bag Type |
Custom Flat Bottom Side Gusset Bag |
| Capacity |
250g - 5kg (adjustable via gusset width) |
| Material |
Food-grade barrier film (e.g., PET/AL/PE, matte/gloss finish optional) |
| Size |
Custom (based on capacity & gusset design) |
| Thickness |
90μm - 160μm (for enhanced barrier performance) |
| Printing |
1-8 color flexographic/rotogravure printing (dark film compatible) |
| Custom Features |
Resealable Zipper, Tear Notch, Heat Sealable, Light/Oxygen Barrier |
| MOQ |
5000 pieces (bulk order discounts available) |
| Lead Time |
15-18 working days (bulk); 3-5 working days (samples) |
| Certifications |
FDA, SGS, ISO9001 (food-contact safe) |
| Payment Terms |
T/T (30% deposit, 70% against BL copy), L/C |

This custom flat bottom side gusset bag is ideal for premium products requiring freshness & shelf appeal:
- Coffee & Tea: Whole beans, ground coffee, loose-leaf tea
- Premium Dry Goods: Artisanal nuts, spices, gourmet grains
- Specialty Items: Organic snacks, herbal supplements

We deliver tailored solutions for your branded packaging needs:
- Dark Film Printing Expertise: Crisp, vivid graphics on opaque materials (as shown in the Fenosser pouch)
- Barrier Material Customization: Match film layers to your product’s freshness requirements
- Strict Quality Control: Food-grade certifications & batch testing for consistency

Our process ensures high-quality printing & structure for dark-film gusset bags:
- Material selection (barrier film matching product needs)
- Color calibration for dark-film printing (to ensure vivid graphics)
- Gusset folding, bottom sealing & feature assembly (zipper/tear notch)
- Leak/barrier performance testing

Our monthly capacity reaches 6M+ gusset bags. For more details, visit our official site here.
Q1: Can this bag be printed on dark materials (like black film)?
A1: Yes! We specialize in color calibration for dark films to ensure sharp, vivid printing (as shown in the sample).
Q2: Is the material suitable for coffee bean storage?
A2: Absolutely – the barrier film blocks oxygen/light to preserve coffee aroma & freshness.
Q3: Can I add a one-way valve for coffee bags?
A3: Yes, one-way valves (for coffee degassing) are available as a custom feature.
