Complete Purified Water Bottling Line Process
(From Preform Injection Molding to End-of-Line Packaging)
This production line can be divided into five main systems:
1. Preform Production System
2. Preform Heating & Bottle Blowing System
3. Aseptic Filling System
4. Inspection, Labeling & Coding System
5. End-of-Line Packaging System
1. Preform Production System (Injection Molding, Optional if Preforms are Purchased)
PET Raw Material Preparation:
PET granules are dried and dehumidified (typically at 160–180°C)
Preform Injection Molding:
Equipment: Injection molding machine + dedicated mold
Process: Plasticizing PET → Injecting into mold cavity → Cooling → Ejecting the preform
Preform Cooling and Storage or Inline Transfer:
Cooled preforms are either stored or transferred directly to the bottle blowing system
2. Preform Heating & Bottle Blowing System
Preform Sorting and Feeding:
Automatic unscrambling → Preforms are transferred to the heating unit
Infrared Heating:
Infrared lamps evenly heat the preforms for blow molding
Bottle Blowing:
High-pressure air blows the preform into a mold → Shaped into a PET bottle → Cooling
Bottle Cooling & Inspection:
Inspect for appearance and neck defects
3. Aseptic Filling System (Monoblock 3-in-1 Machine)
Bottle Rinsing
Bottles are rinsed using sterile water or ozonated water to ensure hygiene
Water Filling (Isobaric or Vacuum Filling)
Precise volume control
Foam-free filling, consistent liquid level
Cap Sorting & Capping
Caps are automatically sorted and fed → Caps are tightened with torque control
4. Inspection, Labeling & Coding System
Cap Inspection
Checks for missing caps, crooked caps, or loose caps
Defective bottles are rejected automatically
Induction Foil Sealing (Optional)
For high-end products: aluminum foil seal via induction heating enhances shelf life
Labeling
Labeling options: shrink sleeve or self-adhesive label
Labels are automatically positioned and applied
Inkjet or Laser Coding
Prints manufacturing date, batch number, and expiration date
5. End-of-Line Packaging System
Bottle Grouping
Bottles are automatically arranged in sets (e.g., 3×4, 4×6 layout)
Packaging Options:
a. Film Wrapping
Bottles are wrapped in PE shrink film → Heated shrink tunnel forms a tight pack
b. Cartoning
Automatic carton erector → Bottle loading → Carton sealing → Strapping
Palletizing and Storage
Robotic palletizer stacks finished packs/cartons onto pallets
Summary Process Flow (Simplified)
PET → Preform Injection → Preform Heating → Bottle Blowing → Rinsing → Filling → Capping→ Inspection → Labeling → Coding → Packaging → Palletizing → Storage
If you’d like a flowchart, layout diagram, or equipment list for this process, I can create one for you. Just let me know what you need!