4-Door Bottle Dryer

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The recirculating drying method is one of the most efficient and rapid drying methods that can be applied to dry various materials.

Hot air passes across trays containing the materials and removes moisture from them. This hot air is continuously circulated within the drying chamber, enabling fast and uniform drying of the materials.

The 4-Door Bottle Dryer is one of many types of bottle dryers manufactured by T&T MACHINERY, custom-designed according to customer requirements.

✅ Working Principle Diagram
- Heating source: Uses either electric heating elements or steam for heating.
- Hot air circulation: A convection fan draws hot air from the heating chamber and distributes it evenly across trays containing bottles, ensuring uniform temperature in all areas.
- Clean air filtration: Incoming air passes through a multi-stage filtration system (G4, F8, HEPA H13) before entering the drying chamber.
- Exhaust air: Waste air is filtered through an exhaust purification system before being discharged, preventing environmental pollution.
- Automatic control: A mechanical push-button system controls the entire drying cycle (temperature, time, pressure, safety).
- Safety mechanism:
  - Interlock doors (only one side can open at a time)
  - Quick-lock airtight seals
  - Explosion-proof system with pressure relief valves (≥ 2 bar)
- Explosion prevention cycle: Before heating begins, the fan runs for 5 minutes to purge alcohol vapors from the chamber, avoiding ignition when electric heating is turned on.
(Summary: Heating Source → Convection Fan → Bottle Trays → Inlet & Exhaust Air Filtration → Central Control System → Safety Mechanisms)

✅ Applications
- Drying glass bottles used in pharmaceuticals, bioproducts, food, and cosmetics.
- Pre-treatment of packaging before filling solutions, injectables, or IV fluids.
- Ensures bottles are clean – dry – sterile before entering the filling zone.
- Suitable for GMP-WHO, EU-GMP certified factories, R&D labs, and production facilities requiring high-level quality control.

Product information

4-Door Bottle Dryer manufactured by T&T MACHINERY is an optimal solution to ensure that glass bottles used in pharmaceutical production are always dry – clean – sterile – and safe, strictly complying with GMP standards.

✅ Key Advantages of T&T MACHINERY’s 4-Door Bottle Dryer

1️⃣ Compliant with GMP-WHO and EU-GMP standards
Designed according to international requirements, suitable for stringent regulatory inspections.

2️⃣ SUS 304 Stainless Steel Construction
Durable, corrosion-resistant, and easy to clean – ideal for GMP-compliant environments.

3️⃣ Stable and Uniform Temperature
Equipped with a powerful convection fan system, ensuring a temperature deviation of no more than ±3°C across all areas.

4️⃣ Flexible Operation
Supports both automatic control via push-button and manual operation, depending on user preference.

🔎 See also: T&T MACHINERY’s Steam Bottle dryer with touchscreen control

5️⃣ Maximum Safety
Equipped with door interlock system, explosion-proof design, and audible/visual alarms when temperature thresholds are exceeded.

6️⃣ Multi-stage Air Filtration
Ensures a clean drying environment by controlling particulates and microbial contamination (filtration levels: G4, F8, HEPA H13).

7️⃣ Energy Efficient Operation
Users can choose between electric heating or steam heating, helping reduce operating costs.

8️⃣ High Capacity & Versatility
Holds up to 20 trays on 2 stainless steel trolleys, suitable for various production scales.

🔎 See also: T&T MACHINERY’s L iquid medicine production line

T&T MACHINERY Bottle dryer and 4-Door Bottle Dryer line

Key customers using T&T MACHINERY 4-Door Bottle Dryer

AN PHÚ KHANG Cosmeceuticals
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Technical specifications of 4-Door Bottle Dryer

Model	4-door bottle dryer
Standard	GMP-WHO, GMP-EU
Material	SUS 304
Dryer's door	- 02 front doors - 02 back doors, fast lock- Interlock mechanism: only one side can be open at a time
Temperature control	Each zone has independent temperature control
Heating	Resistor or steam
Operating mode	Automatic/ Manual
Drying temperature	Max 120°C
Temperature deviation	±3°C between layers (measured at 5 points per layer)
Tray dimension	520 × 820 × 35 mm, perforated tray
Control	Button. Alarm lighting when door is open.
Temperature safety	If the temperature exceeds the setpoint by more than 3°C → the system will stop automatically, with alarm sound and warning lights
Electrical safety	Complete system shutdown in case of: ▫ Phase loss ▫ Voltage fluctuations ▫ Emergency stop button activation Operation only allowed when doors are fully closed Safely grounded (Earth connection provided) Equipped with emergency stop button
Explosion-proof	Explosion-proof release door, opens automatically at pressure ≥ 2 bar, with calibration certificate provided

ASSOCIATED EQUIPMENT

4-Door Bottle Dryer | Sterile Drying Solution for Pharmaceutical & Food-Grade Glass Bottles | T&T MACHINERY