Complete TDDS / Transdermal Patch Manufacturing Solution
Complete TDDS / Transdermal Patch Manufacturing Solution
HUANGHAI provides wet-coating equipment for drug-in-adhesive Transdermal Drug Delivery Systems (TDDS): precision film coating and drying with in-line lamination on the MJ150 series, then slitting, die-cutting and pouch packaging on the MJ180. Slurry preparation is supplied by the customer or a third party. Designed for pharmaceutical R&D and commercial-scale patch production.
What Is a TDDS Manufacturing System?
A Transdermal Drug Delivery System (TDDS) is a medicated adhesive patch that delivers active pharmaceutical ingredients through the skin at a controlled rate. Manufacturing TDDS patches requires precision equipment for:
- Preparing and homogenizing the drug-loaded adhesive (supplied by the customer or a third party)
- Coating the matrix onto a release liner at uniform thickness
- Controlled drying to lock in drug concentration and adhesive properties
- Die-cutting or slitting into finished patch dimensions
HUANGHAI's TDDS solution is a solvent-based wet-coating platform for drug-in-adhesive patches, from bench-top R&D to commercial-scale production.
Core Manufacturing Modules
1. Adhesive Matrix Preparation (Customer or Third Party)
Mixing and degassing of the drug-loaded adhesive is not a Huanghai-built module. It is supplied by the customer or a third party; Huanghai can source a slurry mixing tank (5 L or 30 L) and include it in the quotation. Huanghai's own equipment starts at coating.
2. Precision Coating & Drying Line
Why It Matters: Coating thickness must be uniform to ±2% across the full web width to ensure dose consistency. Drying profiles affect adhesive peel force and drug crystallization.
Core Equipment: MJ150 and MJ150-L precision coating lines.
Application Scenarios:
- Matrix-type patches (adhesive = drug carrier)
- Transdermal patches for sustained 24–72h delivery
Technical Specifications:
- MJ150-L — Coating width: 250mm | Speed: 0.2–8 m/min | Drying zones: 3 × independently controlled | Film thickness: 0.05–1.5mm
- MJ150 — Coating width: 130mm | Speed: 0.2–5 m/min | Drying tunnel: 6m | Temp range: up to 120°C
- Doctor blade or slot-die coating head options
- Auto tension control + film shortage alert
- Online thickness scanner (optional)
- Solvent recovery system for Class II/III solvents (optional)
3. Die-Cutting & Slitting
Why It Matters: Final patch geometry must be precise for packaging and patient application. Clean edge cuts prevent adhesive migration.
Application Scenarios:
- Standard oval, round, or rectangular patch shapes
- Custom die-cutting for branded patch designs
- High-speed slitting for roll-to-pouch packaging integration
Technical Highlights:
- Slitting, die-cutting and individual pouch packaging on the MJ180; for TDDS it uses an electrostatic transfer unit for the laminated web
- Quick-change die tooling
- Compatible with paper/foil/PE backing materials
4. QC & Documentation
- Batch manufacturing records (BMR) templates
- IQ/OQ/PQ document templates (on-site validation is executed by the end user)
- Data logging designed to support 21 CFR Part 11 compliance: audit trail, electronic records, access control
- Release testing: weight variation, peel adhesion, content uniformity
TDDS vs ODF: Equipment Overlap and Key Differences
HUANGHAI's MJ Pro series can be configured for either ODF (Oral Dissolving Film) or TDDS (Transdermal Patches) on the same platform; the application is decided before the machine is manufactured.
| Parameter | ODF (Oral Film) | TDDS (Transdermal Patch) |
|---|---|---|
| Matrix type | Hydrophilic polymer (HPMC, PVA) | Adhesive (acrylate, silicone) |
| Substrate | Mylar / PET release liner | Siliconized release liner + backing film |
| Film thickness | 0.05–0.3 mm | 0.1–1.5 mm (adhesive layer) |
| Drying profile | Water evaporation (60–80°C) | Solvent evaporation and recovery |
| Post-coating | Cutting into strips | Die-cutting into patch shapes |
| Shared equipment | MJ150 / MJ150-L platform (application decided before manufacture) | |
Typical TDDS Applications
- Pain Management: Lidocaine, fentanyl, diclofenac patches
- Hormonal Therapy: Estradiol, testosterone, progesterone patches
- Smoking Cessation: Nicotine patches (7mg / 14mg / 21mg)
- CNS / Neurological: Scopolamine (motion sickness), rivastigmine
- Cardiovascular: Nitroglycerine, clonidine patches
- Nutraceutical Patches: Vitamin B12, melatonin, CBD
Ready to Build Your TDDS Line?
Whether you're scaling from lab to pilot or building a commercial CDMO facility, our engineers will help you select the right coating width, drying configuration, and cutting solution for your formulation.