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Pactrum Flexible Packaging
Spout Pouches 4 min read September 2026

What Is a Spout Pouch? Closures, Geometry & Liquid Packaging

Learn about flexible liquid packaging: top vs. 45-degree corner spouts, tamper-evident caps, and capacity options.

Quick Answer

A spout pouch is a flexible liquid container featuring an injection-molded plastic spout heat-welded into its upper seam. Fitted with a threaded, tamper-evident screw cap, it replaces rigid glass and plastic bottles for dispensing fluids, purees, and viscous liquids.

Essential Key Points
  • Top Spouts are positioned in the top center for vertical drinking or direct dispensing.
  • Corner Spouts are welded at a 45° angle to prevent glugging and air-locks during pouring.
  • Tamper-evident ring closures break upon first twist, guaranteeing seal integrity.
  • Pactrum standardizes spout capacities in 100ml, 250ml, and 500ml formats.

The Shift from Rigid Bottles to Flexible Spouts

Rigid bottles consume significant storage volume when empty and add unnecessary tare weight to transport logistics. Spout pouches ship flat to filling facilities, reducing freight volume by over 80% before filling.

Top Spout vs. 45° Corner Spout

Pactrum manufactures spout pouches in two architectural geometries:

  • Top Spout: Located in the center top seal. Best for direct-to-mouth beverages, energy gels, and compact personal care travel packs.
  • Corner Spout (45° Angle): Welded into the upper shoulder corner. Angling the spout allows air to enter the pouch while liquid exits, preventing the sudden "glug" effect when pouring cooking oils or viscous sauces.

Tamper-Evident Safety

All Pactrum spout closures incorporate a mechanical breakaway collar. When the end customer turns the cap counterclockwise for the first time, the plastic bridges snap, providing immediate visual verification of tamper-free retail safety.

CATALOGUE DISCOVERY

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Standardized specifications relevant to What Is a Spout Pouch?.

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Frequently Asked Questions

How are spout pouches filled?

Spout pouches can be filled directly through the open spout neck using standard liquid filling nozzles before capping, or through an unsealed top edge which is then heat-sealed.

What liquids can be packed in spout pouches?

They are suitable for drinking water, fruit juices, sauces, edible oils, honey, liquid hand wash, and automotive fluids.

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