System Description, Operating Principle, Technical Specifications, and Application Areas
Front-to-back labeling machines are high-precision automated systems that enable the simultaneous application of two different labels to both the front and back surfaces of bottles with flat or oval surfaces.
In these systems, as the product moves along the conveyor, two separate labeling units work synchronously to apply the label to both surfaces of the product.
Positioning star wheels or servo synchronization systems are used for product guidance. The system offers both high speed and versatile product processing capabilities.
Operating Principle and Packaging Compatibility
The system includes a guiding device that ensures product alignment, double-sided servo motor-driven label drivers, and precision printing rollers.
Both labeling modules apply the label by aligning it without touching the product. This structure, which operates synchronously with the conveyor speed, works with minimum slippage and deviation.
Packaging Type | Eligibility Status |
Flat Surface Bottle/Box | ✅ The most suitable form |
Oval Bottle | ✅ Suitable (positioning required) |
Round Bottle | ⚠️ Limited compatibility (difficulty with double application) |
Square/Corner Packaging | ✅ Suitable |
📌 Note: This is an ideal solution for packaging that lacks rotational symmetry.
Technical Specifications
Technical Parameters |
Explanation |
Label Type | Roll labels, opaque or transparent. |
Label Width | 20 mm – 160 mm (separate for each module) |
Product Range | 30 mm – 120 mm |
Labeling Speed | 3,000 – 7,000 units/hour (depending on the product) |
Label Sensitivity | ±1 mm (with optical or ultrasonic sensor) |
Adhesive Unit | Dual servo motor label feeding system |
Product Alignment | Mechanical or servo positioning device |
Body Material | AISI 304 stainless steel, GMP compliant. |
Control Panel | PLC + 7” or 10” touchscreen HMI |
Label Expiration Warning | Automatic alarm system |
Certificates of Conformity | CE, GMP, ISO 9001 |
Optional Equipment
• Label printer integration (lot, expiration date, GS1-QR code)
• Transparent label detector (ultrasonic sensor)
• Product spacing control via servo star wheel
• Camera-controlled position verification system (OCR/OCV)
• Label end sensor + automatic roll changing
• Automatic product rejection module
• SCADA/MES compatibility
• Aseptic cabinet interior installation option
Areas of Application and Product Groups
Sector | Sample Products |
Cosmetics and Personal Care | Shampoo, conditioner, shower gel |
Food and Beverage | Salad dressing, flavored water, energy drink |
Pharmaceuticals and Supplements | Vitamin syrup, OTC products, medical lotion. |
Chemistry and Cleaning | Liquid detergent, bleach, surface cleaner |
Agricultural Products | Foliar fertilizer, biological liquid solution |