Quality Control Services for Oral Care Products in Asia

Process 1. Raw Material Preparation & Inspection

Key Processes:

Procuring pure water, alcohol (ethanol), glycerin, sweeteners, flavorings, preservatives, and active ingredients (e.g., fluoride, antibacterial agents) that meet pharmaceutical or food-grade standards. All raw materials must undergo strict quality inspection.

Main Equipment:

Water Treatment System (e.g., Reverse Osmosis RO Equipment), Quality Testing Equipment.

Common Issues:

Substandard raw material quality, substandard water quality, raw material cross-contamination, inaccurate inspection results, and batch variation.

Process 2. Bottle Blow Molding

Key Processes:

Heating and melting food-grade plastic pellets, forming a parison (preform) through extrusion or injection molding, then placing the parison into a mold and blowing it with high-pressure air to form the desired bottle shape.

Main Equipment:

Blow Molding Machine (Including Extrusion Blow Molding Machine Or Injection Stretch Blow Molding Machine), Molds, Cooling System.

Common Issues:

Uneven bottle wall thickness, bottle deformation/shrinkage, bottle neck defects, bottle bubbles/impurities, and insufficient bottle strength.

Process 3. Labeling & Coding

Key Processes:

Applying product labels to bottles and printing production date, batch number, expiration date, and other information.

Main Equipment:

Automatic Labeling Machine, Inkjet Coding Machine.

Common Issues:

Misaligned/bubbled/wrinkled labels, label peeling, blurred/missing/incorrect coding, and label-product mismatch.

Process 4. Formulation & Mixing

Key Processes:

Precisely mixing pure water, alcohol, glycerin, sweeteners, flavorings, active ingredients, etc., in clean mixing tanks according to the formulation. Temperature and stirring speed must be strictly controlled to ensure uniform dissolution and dispersion of ingredients.

Main Equipment:

Stainless Steel Mixing Tanks (With Agitators And Temperature Control), Dosing Pumps, Weighing Systems.

Common Issues:

Incorrect formulation ratio, uneven mixing, improper temperature control, microbial contamination, and foreign matter inclusion.

Process 5. Filtration

Key Processes:

Passing the mixed mouthwash through a multi-stage filtration system to remove fine particles and impurities, ensuring the product is clear and transparent and meets hygiene standards.

Main Equipment:

Precision Filters, Membrane Filtration System.

Common Issues:

Incomplete filtration, filter clogging, decreased filtration efficiency, and microbial penetration.

Process 6. Quality Control & Inspection

Key Processes:

Implementing strict quality control at all stages of production, including raw material inspection, in-process inspection, and finished product inspection (e.g., pH, density, microbial limits, appearance, volume, seal integrity), to ensure compliance with all quality standards and regulatory requirements.

Main Equipment:

Laboratory Testing Equipment, Microscope, pH Meter.

Common Issues:

Missed defects, false positives/negatives, false negative microbial test, fluctuating physicochemical indicators, and inconsistent sensory evaluation.

Process 7. Filling

Key Processes:

Precisely filling the filtered mouthwash into pre-sterilized bottles. The filling process must be conducted in a clean environment to prevent secondary contamination.

Main Equipment:

Liquid Filling Machine (Typically Rotary Or Linear Type).

Common Issues:

Inaccurate filling volume, dripping/overflow, microbial contamination, bubble formation, and foreign matter inclusion.

Process 8. Capping & Sealing

Key Processes:

Immediately capping and sealing the bottles after filling to ensure product integrity, prevent leakage, and contamination.

Main Equipment:

Automatic Capping Machine, Induction Sealing Machine (If Required).

Common Issues:

Loose capping/stripped threads, cap damage, weak/burnt induction seal, missing caps, and failed seal integrity test.

Process 9. Packaging

Key Processes:

Packing labeled mouthwash bottles into cartons, then into shipping boxes, and sealing the boxes.

Main Equipment:

Automatic Cartoning Machine, Automatic Case Packer, Carton Sealing Machine.

Common Issues:

Packaging damage, counting errors, incorrect/missing labels/barcodes, product contamination, and poor packaging appearance.