Spray System for Pharmaceutical Tablet Coating

Product Specifications

Technical details and manufacturing context for Spray System

Definition

The Spray System is a critical component of the Automated Pharmaceutical Tablet Coating System responsible for the controlled application of coating materials. It precisely meters, atomizes, and distributes coating solutions (such as polymer films, enteric coatings, or functional layers) onto tablets as they tumble in the coating pan. This system ensures uniform coating thickness, consistent film quality, and optimal drug release characteristics while minimizing waste and defects. The system is designed for integration into automated coating equipment, with wetted parts typically made of 316L stainless steel, PTFE, or ceramic to resist corrosion and maintain purity. Key operational parameters include a spray flow rate of 0.5–5 mL/min, atomization pressure of 0.2–0.6 bar, nozzle orifice diameter of 0.5–1.2 mm, and spray pattern width of 100–300 mm. The operating pressure range is 1.0–1.6 MPa, and fluid temperature must be maintained between 10–60°C to avoid coating degradation. The system operates within an ambient temperature of 5–40°C and relative humidity of 30–85% (non-condensing). It carries an ingress protection rating of IP54–IP65 (IEC 60529) for washdown environments. Electrical requirements include a 24 V DC supply (±10%) and power consumption of ≤50 W (excluding pump). The complete spray lance assembly weighs 8–15 kg. These values are reference ranges for directory purposes; actual specifications must be confirmed with the legal manufacturer for the specific model and application. The system is not a standalone product but a component intended for use within a larger coating system. Verification of standards and compliance is the responsibility of the purchaser.

Working Principle

The system operates by pumping coating solution from a reservoir through precision nozzles. The fluid is atomized into fine droplets using either pneumatic (air-assisted) or hydraulic pressure. These droplets are directed onto the tablet bed within the coating chamber. Control systems regulate flow rate, spray pattern, atomization pressure, and nozzle positioning to achieve precise application. The spray pattern width and droplet size are influenced by nozzle orifice diameter and atomization pressure. The system is designed to operate within specified pressure and temperature ranges to ensure consistent coating quality. Proper maintenance includes regular inspection of nozzles for clogging and verification of pressure settings.

Common Materials

Stainless Steel (316L), PTFE (Polytetrafluoroethylene), Ceramic

Technical Parameters

Parameter	Typical range	Notes & selection driver
Spray Flow RateRequired	0.5–5 mL/min	Volumetric flow rate of coating solution through the spray nozzles
Atomization PressureRequired	0.2–0.6 bar	Air pressure used to atomize the coating solution into fine droplets
Nozzle Orifice DiameterRequired	0.5–1.2 mm	Diameter of the nozzle opening that determines droplet size and spray pattern
Spray Pattern WidthRequired	100–300 mm	Width of the spray fan pattern at the target distance
Fluid Temperature Range	10–60 °C	Above 60°C may degrade coating
Ambient Temperature Range	5–40 °C	For control cabinet operation
Relative Humidity Range	30–85 % RH	Non-condensing
Ingress Protection Rating	IP54–IP65	For washdown environmentsIEC 60529
Supply Voltage	24 ±10% V DC	For solenoid valves and sensors
Power Consumption	≤50 W	Excluding pump
Material of Wetted Parts	316L	Corrosion-resistantASTM A240
Weight	8–15 kg	Complete spray lance assembly

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Spray Nozzle
Atomizes coating solution into fine droplets and directs spray pattern onto tablets

Material: Stainless Steel with ceramic orifice
Diaphragm Pump
Provides precise, pulseless flow of coating solution to the nozzles

Material: Stainless Steel with PTFE diaphragms
Solution Reservoir Part
Holds and supplies coating solution to the pump system

Material: Stainless Steel (316L)
Flow Meter
Measures and monitors the flow rate of coating solution

Material: Stainless Steel with glass/ceramic measuring element
Control Valve
Regulates flow of coating solution and enables on/off control

Material: Stainless Steel with PTFE seals
Atomizing Air Control
Sets the atomizing air pressure, which together with the orifice fixes droplet size.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Spray System.

Manufacturers of Spray System

Manufacturer profiles associated with Spray System.

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Frequently Asked Questions

What materials are used for wetted parts?

According to the directory data, wetted parts are made of 316L stainless steel, PTFE, or ceramic. These materials are corrosion-resistant and suitable for pharmaceutical applications. Confirm exact material selection with the manufacturer.

What are the environmental limits?

The system is designed for ambient temperatures of 5–40°C and relative humidity of 30–85% (non-condensing). It has an ingress protection rating of IP54–IP65 for washdown environments. Ensure the installation environment meets these conditions.

How is the spray flow rate controlled?

The spray flow rate is a parameter that can be set within the range of 0.5–5 mL/min. The control system regulates the flow rate to achieve the desired coating thickness. Actual settings depend on the coating formulation and tablet characteristics.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 6 bar
flow rate:	0.5 to 10 L/min
temperature:	10°C to 60°C
slurry concentration:	Up to 25% solids by weight

Spray System

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards