3-Side Seal Flat Pouches (Sachets & Vacuum Bags)
Cost-effective, ultra-compact flat pouches sealed on three edges with one open filling mouth. Ideal for single-serve samples, face masks, and frozen foods.
Engineered for High-Barrier Protection & Shelf Pop
Three-side seal pouches (also called flat pouches or sachets) are sealed along the left, right, and bottom borders, leaving the top open for fast filling and heat-sealing. Without side or bottom gussets, they lay completely flat, maximizing shipping pallet density and minimizing material waste. At QINPACK, our 3-side seal flat pouches are manufactured for both dry single-serve powdered products (supplements, instant coffee, seasonings) and heavy-duty vacuum preservation (frozen seafood, smoked meats, and medical dressings). They are available with Euro-slot retail hang holes, tear notches, and ziplocks.
Recommended Production Options:
Ultra-Vacuum Oxygen Depletion & High-Efficiency Heat Sealing
Maximized surface contact and perimeter hermetic integrity for single-serve sachets and commercial deep-freeze vacuum packaging.
Deep vacuum drawing down to -98 kPa prevents lipid oxidation in frozen proteins.
Linear directional tear line opens effortlessly without spilling powdered contents.
Wide perimeter weld prevents freeze-fracture and liquid leakage at sub-zero temperatures.
Standard 32mm butterfly or round hang hole centered perfectly for retail peg display.
Factory Customization & Engineering Matrix
Explore barrier substrate formulations, functional hardware add-ons, dieline tolerances, and standard fill capacities.
Ultra-High Barrier (Pure Foil)
Whole bean coffee, baby nutrition, pharma powders, active reagents.
High Barrier (Metallized)
Potato crisps, nuts, granola, pet treats, dry bakery snacks.
Clear High-Barrier (EVOH / AlOx)
Organic dried berries, confectionery, artisan pasta with display window.
100% Recyclable Mono-PE
ESG-focused brands, EU packaging directive compliance, SPI Code 4.
Heavy-Duty Puncture-Proof
5kg–10kg bulk pet kibble, coarse bath salts, bone broths, sharp granules.
Natural Tactile Kraft Barrier
Organic grains, artisan tea blends, botanical supplements, herbal mixes.
Detailed Technical Parameter Matrix
Physical tolerances, seal strengths, temperature ranges, and regulatory standards.
Why Brands Specify This Pouch Format
Lowest Material Cost per Unit
Eliminates gussets and complex folding labor, providing the most economical cost per package.
Puncture-Resistant Vacuum Sealing
Heavy Nylon (BOPA) laminations resist bone puncture and cracking under sub-zero -25℃ freezer temperatures.
Pegboard & Retail Display Ready
Punching Euro hang holes allows pouches to hang cleanly on retail pegboards, checkout aisles, and clip strips.
Hermetic Light & Gas Protection
Foil barrier flat sachets preserve active cosmetics, pharmaceutical powders, and diagnostic test strips.
Compact Travel & Sample Friendly
The flat silhouette fits easily into e-commerce subscription boxes, direct mail envelopes, and sample packs.
Rapid Automated Fill & Seal Rates
Pre-made flat pouches feed effortlessly into automated high-speed pouch loaders.
Where This Packaging Shines
Single-Serve Drink Mixes
Instant coffee, collagen stick packs, energy drink powders, and protein samples.
Frozen Meats & Seafood
Vacuum-sealed salmon fillets, steaks, shrimp, and charcuterie meats.
Cosmetics & Sheet Masks
Hydrogel facial sheet masks, lotion travel sachets, and serum samples.
Culinary Spices & Marinades
Meal kit recipe ingredient packs, dry rubs, and spice seasoning packets.
Medical & Dental Supplies
Sterilized alcohol prep pads, adhesive bandages, and dental tool barrier wraps.
Electronics & Hardware
Anti-static ESD vacuum pouches for microchips and precision machine screws.
Frequently Asked Questions About 3-Side Seal Flat Pouches (Sachets & Vacuum Bags)
Answers regarding barrier performance, custom dielines, filling machinery compatibility, and minimum order runs.
Explore Complementary Pouch Styles:
Ready to Quote Your Custom 3-Side Seal Flat Pouches (Sachets & Vacuum Bags)?
Send your estimated dimensions, target shelf life, and quantities. We provide free vector dielines, itemized factory pricing, and barrier material recommendations within 24 hours.