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HomePharma Packing MachinesBlister & Strip MachinesCold-Form Alu-Alu Blisters
DOC: P11TYPE: SUPPORTUPDATED: 2026-11-14VERIFIED: Pharma Packing Machine cGMP Technical Review

Cold-Form Alu-Alu Pharmaceutical Blister Machines: Zero-Moisture Barrier

Cold-stamp OPA/Alu/PVC tropical barrier blisters at 25–70 cycles/min (up to 250 BPM) with PTFE plug assist, optical pinhole detection, and >=7 N/15 mm sealing.

Engineering Pin-Hole-Free Cold-Form Aluminum Blisters for ICH Zone IVb

Cold-form aluminum (OPA 25 μm / Alu 45–60 μm / PVC 60 μm) is the gold-standard pharmaceutical barrier—blocking ~100% of water vapor, oxygen, and UV light without expensive Aclar fluoropolymers. Inside blister and strip packing machines, cold-forming stamps cavities mechanically using polished PTFE/nylon plug assists rather than heating the web, demanding heavier platen tonnage (6–18 kW servo/cam frames) and strict draw geometry control.

Models from the DPP-180L and BG-180BP (180 mm web, 30–50 cycles/min) up to Rapid Pack 260/300 (230–300 mm web, 25–70 cycles/min) protect hygroscopic antibiotics, cardiovascular APIs, tadalafil, and probiotics worldwide.

Six-stage cGMP balcony blister forming, pinhole/camera inspection, PTP sealing, and serialized cartoning diagram
Balcony construction isolates mechanical drive gears behind a stainless partition away from open tablet feeding zones.

Cold-Form Alu-Alu Critical Design & Machine Specs

Key engineering rules that prevent aluminum fracturing and channel leaks:

Parameter DPP-180L / BG-180BP DPP-260 / Rapid Pack 300 cGMP Tooling Invariant
Max Cold-Form Web Width 180 mm 230 / 260 / 300 mm OPA/Alu/PVC 0.12–0.16 mm
Standard Forming Depth 12–16 mm (max 20 mm) 15–20 mm (custom deep) <=35–40% max foil elongation
Cold-Form Stroke Speed 25–50 strokes/min 25–70 strokes/min Controlled plug velocity <=60 SPM
PTP Lidding Foil 0.020–0.035 mm hard Alu 0.020–0.035 mm hard Alu >=7 N/15 mm peel @ 120–180 °C
Power & Compressed Air 6.0 kW; 0.5–0.6 MPa 12–18 kW; 0.6–0.7 MPa Chilled sealing-zone isolation

Compare material costs against PVC and PVDC in our Alu-Alu vs Alu-PVC blister guide.

ICH stability barrier, footprint, tooling geometry, and cost comparison across Alu-Alu, PVC/PVDC, and HDPE bottles
Hygroscopic molecules marketed in ICH Zone IVb (30 °C / 75% RH) mandate cold-form Alu-Alu or strip foil over plain PVC.

cGMP Cleanroom & Validation Notes

  • Inline UV/LED Micro-Pinhole Detector: Mounted immediately after the cold-forming station and before tablet feeding, high-sensitivity optical bars detect >=25 μm pinholes so defective pockets are never filled or cartoned.
  • Multi-Stage Graduated Plug Assist: Deep Size-00 capsule pockets use profiled low-friction PTFE plugs with vented female dies so aluminum flows evenly from side margins without corner thinning.
  • Quick-Swap PVC Thermoform Heater Plate: Add the optional upper/lower pre-heating module to run economical transparent Alu-PVC batches on the exact same machine.

Submit Your Tablet/Capsule for Cold-Form Cavity Design

Share pill L × W × H and count per card via Project Brief.

Throughput ranges across 8–16 channel bottle counting lines, cold-form Alu-Alu, strip packers, Alu-PVC, and rotary blister lines
Multi-up die punching (2 to 4 blisters per stroke) multiplies blister output per minute at moderate mechanical stroke rates.

Explore related cGMP systems in Pharma Packing Machines, cGMP Barrier & Validation, or send your dosage specs via Project Brief.

Related Specifications

Further Reference

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