Tablet Coating Spray Nozzles

Tablet Coating Process
It is the process to apply coating material on external surface of tablets to enhance its efficiency and properties

Today many solid pharmaceutical dosage mediums are produced with coatings, either on the external surface of tablets, or on materials dispensed within gelatine capsules.

Coating serves a number of purposes right from protecting stomach lining from aggressive drugs to protecting the tablet from stomach acids. It also helps in maintaining the shape of the tablet and thus can offer a delayed release of the medication.

But for good results, a better coating medium is required. And the same can be fulfilled by Tablet coating spray nozzles.

General purposes of tablet coating

> Covers unpleasant taste, colour and odour
>> Chemical and physical protection from environment
>> To control the release of drug with enteric coating
>> It protects drug from gastric surrounding of stomach
>> Provide way to identify the drug and improves appearance

Results of bad coating

• Sticking or picking • Roughness • Twinning • Peeling • Cracking

Tablet Coating

RC

Spraytech’s RC Series tablet coating spray nozzle are specially designed to meet GMP requirements where surface texture plays very important role.

The unique Air Cap design makes it Anti Bearding and keeps coating process shutdown free, thus higher production ratio and quality requirements are achieved.

RC series spray nozzle is a compact device incorporating of independent controls for Liquid, Atomizing Air and Fan Air for fine tuning of spray capacity, droplet size and spray patterns. It is available in wide variety of spray setups that give a complete selection of flow rate and flat spray patterns.

R series spray nozzles are externally mix nozzles. This means the liquid and air are mixed outside of air cap to produce complete atomized spray.

The liquid atomization is controlled by varying atomizing air and fan air pressures without changing liquid flow rates. The flat spray pattern is controlled by varying the fan air pressure in conjunction with the atomizing air. This is effective for high viscosity liquids, coatings and suspensions.

Tablet coating spray nozzle features a cylinder for controlled “on-off” operation. The cylinder controls a liquid clean-out/ Shut-off needle which also cleans the liquid orifice.

Spray Nozzle Type RC
Spray Type Airborne Air Atomized
liquid orifice size range (Standard) mm 0.8 – 1.5, (1.0)
Solution Flow Rate (typical per nozzle) Liters/hour 6 – 30
Atomizing Air Pressure Range bar 0.7 – 3
Spray Width Pressure Range bar 1.0 – 4.0
Maximum Compressed Air Pressure bar 5.5
Compressed Air Consumption (maximum @ 2.0 bar) Nm³/hour 10.5
Seal Material (standard) check compatibility for organic use FDA Approved

RCS

liquid Orifice Range :0.5 to 1.2 mm

SPRAYTECH’S Latest Development, RCS series coating spray nozzles offers very compact design with innovative flow control feature. This feature offers the user to take the RCS coating nozzle from the lowest 20 ml to its max limit is just a spin.

RCS type coating spray nozzle is very light weight and features anti bearding air cap design which eliminates the deposition of material over the air cap and abolishes bearding over gun.

RCS comes with individual ports for liquid, Atomizing, Fan control and auto shut-off for total control. Also as it is has external mixed design thus, atomized spray properties could be changed as per need with fine tuning of individual pressures of Atomizing air, Fan Air & Liquid pressure.

Innovative needle assembly provides the Auto-shut off and Auto Cleaning of liquid orifice.

RCS type coating spray nozzle is suitable for Lab-coater, Auto Coater and Conventional coater.

Spray setup available with Flat Fan, and Round Pattern.

All Sealing materials are FDA Approved.

RB

DESIGN SUMMARY

  • RB Series variable spray nozzles provide uniform spray distribution with uniform droplet sizes, even when spraying viscous fluids.
  • For finest tuning of liquid flow rate along with spray pattern and droplet sizes independent controls are given in spray nozzles assembly.
  • Suitable for large scale production.
  • For various settings of spray droplet sizes separate air controller is given in spray nozzle assem.bly.
  • Additional inlet /outlet port allows for liquid re-circulation that effectively maintains the flow of viscous liquids.
  • Having removable auto shut off and spring loaded needle cylinder assembly is provided for maintenance.
  • (Liquid Orifice Range : 1.0 to 2.0 MM)

RMG / HSG Top Spray Nozzle & Lance

Spraytech’s RMG / HSG Top Spray Nozzles & Lance are design for Large Scale, Medium Scale and Lab Scale Rapid Mixer Granulator and High – Shear Granulator for Wet Granulation. Superior spray quality produces best in class granules from bulk. Manufactured according to GMP and available in wide range of spray rates. And external mixing spray setup enhances the spray quality and distribution in optimum way.

Spray Nozzles and special purpose lance designs available

Design Features

  • Available in 1, 3, 4 spray heads
  • Available in various spray angles
  • Auto-shut off feature
  • Anti-drip spray heads
  • Long life lance design
  • Compact design of spray nozzle
  • Homogeneous spray distribution
  • Fine droplet size, best for wet granulation
  • GMP suitable design
  • Anti-clogging lance design
  • Made from SS316L and all O-rings from FDA approved material
  • Custom made designs available

Fluid-bed Spray Nozzles & lances

Fluid bed process consists of following applications :

1. Drying
Process of extracting moisture from solid bulk material by making it fluidized with high flow blow of air, so moisture is removed homogeneously and all over surface of every single particle.

2. Granulation / Agglomeration
Powder particles of bulk material bonded by liquid fine spray. Liquid could be water or an organic solvent and the powder material will be mixed together. Agglomerate has less strength of particle bond.

3. Coating
Fluidized particles are coated with spray of coating material which enhances. coating film must be very uniform over the particle surface.

4. Tangential Coating
Centrifugal motion is used for making spherical pallets, at the same time particles are bonded by binder liquid. layering also can be done in same way.

Fluid-bed Spray Nozzles & Lances

FBP Top Spray Nozzle & Lance

Spraytech’s Top Spray Nozzles are design for Large Scale, Medium Scale and Lab Scale Fluid Bed Processors. Manufactured according to GMP and available in wide range of spray rates. And external mix spray setup enhances the spray quality and distribution in optimum way.

Design Features

    • Available in 1, 3, 6, 7 spray heads
    • Available in various spray angles (Top down spray)
    • Auto-shut off Feature
    • Anti-drip spray heads
    • Long Life Lance design
    • Compact design of spray nozzle
    • Homogeneous spray distribution
    • Fine droplet size, best for dry granulation, pallet coating, and agglomeration.
    • GMP Suitable design
    • Anti-clogging lance
    • Made from SS316L and All O-rings from FDA Approved

material

  • Custom made designs available

FBP Bottom Spray Nozzle & Lance ( Wurster Coating )

Spraytech’s specially designed and customizable Fluid bed Bottom spray (Wurster coating) nozzle helps to improve the wurster coating application and also makes it possible to attain high-quality results in coating pellets and particles.

Designed for All type of Bottom Spray Coating, Allegiant spray distribution and fine droplets results in optimum quality of coating. Light weight design and easy to control the spray parameters. Minimum internal parts hence less maintenance,

Design Features

  • Optimum spray quality
  • Anti-drip spray tip
  • Auto-clean needle assembly
  • Easy to assemble and dismantle
  • Special air cap design to avoid material build-up
  • GMP Suitable design
  • Anti-clogging lance
  • Available with various orifices sizes
  • Made from SS316L and All O-rings from FDA Approved material
  • Custom made designs available