Ultra/High - Barrier Films

Blister Foils / Lidding Foils

Cold Form Blister Foils

Extrusion Laminates

Wahren Tropical Foil

Tropical Foil is manufactured by Wahren. This high-barrier laminate is specially designed for tropical blister packaging, providing superior protection for pharmaceutical products exposed to high temperature and humidity conditions.

Tropical Foil is typically used as an additional protective layer over conventional blister packs, creating a secondary barrier that safeguards the product against moisture, oxygen, light, and environmental contamination. The laminate structure generally consists of PET / Aluminium Foil / PE or other polymer layers, ensuring excellent mechanical strength, sealing performance, and durability.

This packaging solution is widely used for export-oriented pharmaceutical products, especially in regions with challenging climatic conditions.

Applications

Tropical Foil is primarily used in pharmaceutical blister packaging as a protective overwrap for blister packs containing tablets and capsules.

Typical applications include:

  • Pharmaceutical blister packs requiring enhanced barrier protection

  • Export packaging for tropical and high-humidity regions

  • Moisture-sensitive pharmaceutical formulations

  • Long shelf-life pharmaceutical products

  • High-potency drugs requiring extra protection

Specification

  • 12 Mic CC Pet/17 Gsm White PE/09 Mic soft foil / 35 Gsm PE
  • 23 Mic CT Pet / 16 Gsm White PE/ 20 Mic soft foil / 35 Gsm PE
  • 12 Mic CC Pet/17 Gsm PE / 12 Mic soft foil / 20 Gsm PE / 30 Mic LDPE Film
  • 23 Mic Pet / 20 Mic Alu Foil / 36 Mic Extruded PE
  • 18 BOPP / 12 Mic MET PET / 90 LDPE NAT

Technical Specification

Sr. No.Test ParametersUnitStandard Specification
1PET Layer ThicknessMicron12 – 23
2Aluminium Foil ThicknessMicron9 – 25
3PE / LDPE Layer ThicknessMicron30 – 60
4Total Laminate ThicknessMicronAs per structure
5Bond StrengthN / 15 mm≥ 2.0
6Seal StrengthN / 15 mm≥ 6
7OTR (Oxygen Transmission Rate)cc/m²/dayVery Low
8WVTR / MVTRg/m²/dayVery Low
9Ink Adhesion (For Printed Foils)Should Pass Tape Test
10Reel WidthmmAs per customer requirement
11Core IDmm76 ± 1 mm
12PackagingRolls wrapped with protective film and packed in corrugated boxes

 

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