Puncture resistance & High Barrier Spout Pouch
For semi-solid spout pouches (like sauces, gels, pastes, creams, baby food, etc.), the material structure needs to balance barrier, flexibility, and puncture resistance, since the content is more viscous and often applied with pressure through the spout.
Recommended Material Structure for Semi-Solid Spout Pouches
Option 1: PET / NY / PE (Most Common)
- PET: Good for print quality and structural stability
- NY (Nylon): Adds toughness and puncture resistance (especially useful for sharp particles or thick contents)
- PE: Inner sealant, flexible and food-safe
✔️ Good for: Ketchup, lotion, shampoo, puree, gels, mayo, etc.
Option 2: PET / AL / NY / PE (For High Barrier Needs)
- Adds Aluminum foil for light, oxygen, and moisture protection
- Ideal if the product is sensitive or requires extended shelf life (e.g., herbal paste, medicated cream, nut paste)
Option 3: PET / NY / RCPP (For Retort or Hot Fill Applications)
- RCPP (Retortable Cast Polypropylene): Withstands up to 125°C
- Suitable for spout pouches that will be steam sterilized or filled hot
- Good for baby food, sauces, or medicated pastes that require pasteurization
Other Design Tips for Semi-Solid Spout Pouches:
- Spout size: Use 16mm or larger for easy squeeze and flow of viscous products
- Pouch shape: Consider top spout for easy pour or corner spout for controlled squeeze
- Thickness: ≥120 microns; up to 160 microns for high-viscosity or heavy-duty use
- Optional Add-ons:
- Hanging holes or handles
- Transparent window
- Tamper-evident caps
- Anti-leak spout welding