Final Quality Control in Tea Processing: Three-in-One Tea Check Screening

Once tea extraction, concentration, and spray drying are complete, the process enters its final and most quality-sensitive phase — check screening before packing.

At this point, instant tea powder has ceased being handled individually and is then mixed with sugar powder and milk or cream powder to create the well-known three-in-one tea beverage mix for use in ready-to-drink applications.

Although extraction and drying define flavor and solubility, final check screening defines consumer safety, consistency, and pack integrity.

This is where an Inline Sivtek Dual Motor check screen becomes a critical process safeguard.

Why check screening is essential after powder blending

Unlike other classification processes, check screening does not work to alter particle size distribution. It is preventative in nature – it is necessary to have only clean and free flowing powder going on the filling line.

During three-in-one tea blending, manufacturers often encounter:

• Soft agglomerates resulting from hygroscopic ingredients
• Sugar lumps due to exposure to humidity
• Milk powder that bridges and causes flow problems
• Unwanted contaminants that sneak in during blending or handling
• Variable powder flow which disrupts the accuracy of sachet filling operations

The slightest contamination or lump formation at this stage brings about these effects:

• Blocked filling nozzles
• Weight variation
• Consumer-visible defects
• Product rejection and recalls

Check screening acts as the final quality gate before packaging.

How Inline Sivtek Dual Motor performs check screening

The Inline Sivtek Dual Motor is installed directly in the powder transfer line between blender and packing system.

Its low profile in-line structure enables the flow of powder to go through the screen without interruption.

Using dual-motor vibration, the system ensures:

• Uniform material movement across the mesh
• Efficient breakup of soft agglomerates
• Reliable rejection of foreign particles
• Stable feeding to downstream packing equipment

Because screening occurs in a closed, inline environment, the process remains hygienic and dust-free—a key requirement in beverage powder production.

Why this stage protects downstream stability

By check-screening unwanted material before the packing process, inline check-screening provides measurable operational benefits:

• Coarse and uniform flow of the powder
• Reduced packing machine downtime
• Improved weight accuracy
• Reduced operator interference
• Protection against defects in quality

For high-speed beverage lines, this final screening step often determines whether production runs uninterrupted or suffers repeated downtime.

Why tea processors choose Galaxy Sivtek

Galaxy Sivtek designs check screening systems specifically for fine, blended food powders such as instant tea beverages.

The Inline Sivtek Dual Motor is widely used across:

• Tea and herbal beverage manufacturing
• Instant drink premix lines
• Dairy-based powder blends
• Sugar-based formulations
• Nutraceutical beverage powders

Its compact footprint, hygienic construction, and continuous-flow capability make it ideally suited for final-stage quality assurance—where reliability matters more than separation complexity.

Conclusion

In instant tea and premix beverage manufacturing, check screening is not merely a quality checkpoint—it is the final assurance that defines product consistency, safety, and consumer experience. A properly designed inline check screening system ensures a smooth flow of tea powder, sugar, milk solids, and functional ingredients without agglomerates, foreign material, or process interruptions.

The Inline Sivtek® Dual Motor enables this final-stage control with continuous operation, hygienic design, and stable screening performance—enabling reliable packaging, solubility, and continuous processing.

For producers seeking to improve quality control in ready-to-drink tea and premix production lines, Galaxy Sivtek provides process-oriented check screening solutions designed from actual plant requirements. Connect with our technical team to evaluate the right configuration for your beverage processing line.