PTP Lidding Aluminum Foil Roll For Pharmaceutical Blister Pack
Blister Lidding Aluminum Foil for Pharma Push Through is a high-performance heat-sealable aluminum foil specifically engineered as the cover material for pharmaceutical blister packs. This lidding foil is designed to be heat-sealed onto thermoformed blister cavities (PVC, PVDC, PVC/PE, or cold-form foil), creating a complete, tamper-evident, and child-resistant package. Patients push the tablet or capsule through the foil to access the medication-hence the term "push through" packaging.
This lidding foil is manufactured from high-purity aluminum (A1 grade, 20–25µm) with a specially formulated heat-seal coating on the inner surface. The coating is engineered to activate at controlled temperatures, providing consistent seal strength across a wide range of blister base materials and sealing equipment. The outer surface accepts high-quality printing for branding, dosage information, and regulatory labeling, including variable data for serialization.
Key Applications: Pharmaceutical blister packs for tablets, capsules, and softgels; OTC medications; nutraceuticals; and medical device blister packaging where push-through access is required.
What "Push Through" Means for Your Packaging Line:
Patient presses the tablet through the foil-foil breaks cleanly along the seal edge.
Requires precise seal strength control: too strong = patient cannot push through; too weak = premature opening (tamper risk).
Our lidding foil is engineered to deliver consistent push-through force (15–25 N per blister) across all production batches.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | Aluminum foil (A1 grade, 99.9%+ purity) |
| Foil Thickness | 20–25 µm (±5%) |
| Heat-Seal Coating | PVC-compatible lacquer (or PE-compatible) |
| Coating Weight | 3–8 g/m² (±0.5 g/m²) |
| Coating Type | Push-through (standard) or peelable (on request) |
| Total Thickness (coated) | 23–33 µm |
| Width Range | 100–800 mm (slit to order) |
| Core Diameter | 76mm (3") or 152mm (6") |
| Roll Length | 2000–6000 m (thickness dependent) |
| Printing | Up to 8 colors gravure (reverse or surface) |
| Print Resolution | ≥120 LPI |
| Barcode Compatibility | EAN, UPC, DataMatrix, QR (GS1 compliant) |
| Seal Temperature | 160–200°C (coating dependent) |
| Seal Pressure | 3–5 bar |
| Seal Dwell Time | 0.3–0.6 seconds |
| Seal Strength (push-through) | 6–10 N/15mm (controlled for easy push) |
| Push-Through Force | 15–25 N per blister (adjustable) |
| Bond Strength (lacquer to Alu) | ≥4 N/15mm |
| Surface Energy (printing) | ≥42 dynes/cm |
| Pinholes | Zero (100% spark tested) |
| Food/Pharma Contact Compliance | FDA 21 CFR, EU 10/2011 |
| ISO Certification | ISO 15378:2017 |
Coating Chemistry – Matching Your Base Film
Blister Lidding Aluminum Foil for Pharma Push Through is available with different heat-seal coatings to match your specific blister base film:
| Coating Type | Compatible Base Films | Seal Temperature | Best For |
|---|---|---|---|
| PVC-Compatible | PVC, PVC/PVDC, PVC/PE | 160–180°C | Standard pharma blisters |
| PE-Compatible | PVC/PE, PE-based films | 140–170°C | Peelable or lower-temperature sealing |
| Universal (PVC/PE) | PVC, PVC/PVDC, PVC/PE, PE | 160–190°C | Mixed base films (single lidding stock) |
| Cold-Form Compatible | Cold-form aluminum foil (PA/Alu/PVC) | 170–200°C | High-barrier, cold-formed blisters |
| Peelable (Easy-Open) | PVC, PVC/PVDC, PVC/PE | 140–170°C | Elderly/patient-friendly packaging |
How to Choose Your Coating:
| Your Base Film | Recommended Coating | Reason |
|---|---|---|
| PVC (clear/amber/white) | PVC-Compatible | Lowest seal temperature – energy efficient |
| PVC/PVDC (coated) | PVC-Compatible or Universal | PVDC does not affect sealing-same as PVC |
| PVC/PE (laminated) | PE-Compatible | PE layer seals better with PE-specific coating |
| Cold-form foil (PA/Alu/PVC) | Cold-Form Compatible | Requires higher temperature for PVC seal |
| Peelable lidding requirement | Peelable | Controlled peel force (4–10 N/15mm) |
If you are unsure which coating matches your base film, send us a 1m sample of your current base film. We will analyze it and recommend the optimal coating-free of charge.
Printing & Serialization – Regulatory Compliance on the Foil
Blister Lidding Aluminum Foil for Pharma Push Through provides an excellent printing surface for regulatory and branding information:
| Printing Capability | Specification |
|---|---|
| Print Method | Gravure (rotogravure) – up to 8 colors |
| Print Side | Outer surface (reverse printing) or direct surface printing |
| Minimum Font Size | 2pt (legible) |
| Barcode Types | EAN-13, UPC-A, Code 128, DataMatrix (2D), QR |
| Variable Data | Batch/lot number, expiry date, serial numbers (inline printing) |
| Print Contrast (PCS) | ≥0.80 (GS1 compliant) |
| Ink Types | UV-cured or solvent-based – pharma grade, migration-tested |
| Print Durability | Withstands seal temperature and cold forming |
Serialization (EU FMD / US DSCSA):
We offer inline variable printing of DataMatrix codes for each blister.
The codes are printed during slitting-each roll can have sequential serial numbers.
Print verification (barcode quality) is performed inline.
Data file export available for integration with your serialization system.
Printing Proof Process:
You provide artwork (AI, CDR, or PDF).
We produce a print proof on actual foil.
You approve color and register.
We produce the full roll with your design.
Extended FAQ – Lidding Foil Specific Questions
Q1: What is the difference between "push-through" and "peelable" lidding foil?
Push-through foil is designed for patients to push the tablet through the foil. Peelable foil is designed for patients to peel the foil from the blister (easier for elderly/pediatric). We offer both-specify which you need.
Q2: Can this foil be used with child-resistant packaging?
Yes-when combined with a child-resistant lidding design (e.g., two-step peel/push). The foil provides the mechanical strength required for CR performance.
Q3: What is the recommended sealing temperature for this foil?
160–200°C, depending on dwell time and base film. We provide a sealing profile based on your specific base film and machine.
Q4: Can I get printed foil with my branding?
Yes-we offer up to 8-color gravure printing. Provide artwork, and we will produce a print proof for approval.
Q5: How does the foil perform in tropical climates?
The aluminum barrier is unaffected by humidity. The coating may soften at >40°C-we recommend storage at <30°C. Our "Tropical Grade" coating is available for high-temperature regions.
Q6: Can I get a version without PVC coating?
Yes-we offer foil with PE-compatible coating, acrylic coating, or other formulations. Contact us with your specific requirement.
Q7: What is the minimum order for printed foil?
Printed foil MOQ: 1 MT. Unprinted foil MOQ: 500 kg. Sample roll (unprinted): 20 kg.
Q8: Does the foil contain any phthalates?
No-the coating is phthalate-free. Test report available per batch.
Q9: Can the foil be sterilized?
EtO sterilization is compatible. Gamma may cause slight yellowing of printed ink-we recommend EtO for printed foil.
Q10: What is the shelf life of the unopened roll?
24 months when stored at 15–25°C, <60% RH, away from direct sunlight.
Q11: Can I get variable data (batch/expiry) printed inline?
Yes-we offer inline printing of variable data. Each roll can have sequential serial numbers for serialization.
Hot Tags: PTP Lidding Aluminum Foil Roll For Pharmaceutical Blister Pack, China, manufacturers, suppliers, factory, customized, custom, wholesale, low price, free sample, Triplex PVC PE PVDC, Pharmaceutical Pvc pvdc Film For Medicine Blister Packaging, PVC PE Laminated Film Formed Suppository Shell For Pharmaceutical Packaging, Pvc Evoh Film, PVC PE Sheet For Liquid Medicine Packing, High Barrier Liquid Package PVC PE Laminated Film
