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4-Side Seal Pouch

Flexible Sachet Packaging for Powders, Jerky, Single-Serve Mixes, and More

The 4-side seal pouch is a fully enclosed flat packaging format sealed along all four edges. Unlike the 3-side seal, which is formed from a single folded web, the 4-side seal is constructed from two separate film plies joined at every edge. This construction creates a symmetrical package that allows full-surface graphics on both the front and back panels — a meaningful advantage for retail presentation and brand visibility.

This format is ideal for powdered products, soup mixes, single-serve beverage mixes, gelatin and pudding powders, dried meats, jerky, coffee products, and other portion-controlled applications. Its compact profile makes it well suited for retail merchandising, secondary packaging, multipacks, and foodservice distribution.

Bartelt and FLtecnics packaging systems support efficient, high-speed 4-side seal pouch production across a wide range of sizes, film structures, and product types. For jerky and other retail applications, pouches can be produced with features such as zippers and hang holes that enhance convenience and shelf presentation.

Common Applications

Food & Beverage

  • Condiment and sauce packets — ketchup, mustard, mayonnaise, and salad dressings
  • Sugar, sweetener, and coffee creamer sachets
  • Single-serve seasoning and spice blends
  • Powdered drink mixes and electrolyte packets
  • Candy, gummies, and confectionery portions
  • Flat cookie, cracker, and snack formats for foodservice and travel portions

Pharmaceutical & Medical

  • Unit-dose pharmaceutical sachets for powders and granules
  • Electrolyte and supplement packets
  • Diagnostic test strip sachets and reagent packets
  • Wound care accessories and first aid items
  • OTC medication samples and travel-size packs

Personal Care & Beauty

  • Single-use lotion, serum, and gel samples
  • Sheet masks and skincare treatment pouches
  • Shampoo, conditioner, and hair treatment sachets
  • Sunscreen and personal care travel packets

Industrial & Specialty Products

  • Small hardware components and fasteners — screws, anchors, fittings
  • Chemical reagents and laboratory sample packets
  • Seed packets and agricultural sachets
  • Adhesives, lubricants, and single-use chemical portions

Benefits of the 4-Side Seal Format

  • Full printable front and back panels for maximum branding and product information
  • Compact, flat profile for efficient storage, shipping, and secondary packaging
  • High seal integrity for product protection and freshness
  • Compatible with high-barrier films for moisture, oxygen, and light protection
  • Excellent format for portion control and single-serve packaging
  • Suitable for optional retail features such as zippers, tear notches, and hang holes
  • Supports high-speed production across a variety of pouch sizes and products

4-Side Seal Machinery