Automatic Vertical Double-sided Labeling Machine for Flat, Square & Oval Bottles
Apply front and back labels accurately in one pass. Designed for cosmetic, food, beverage, pharmaceutical and daily chemical packaging lines with stable bottle positioning and high-speed production.
Front and Back Labeling for Flat and Square Bottles
The automatic vertical double-sided labeling machine applies labels to both front and back surfaces of containers in one pass. It is designed for products that need neat two-side labels and stable bottle positioning during continuous production.
The machine can be used for flat bottles, square bottles, oval bottles and certain round containers, making it a practical choice for daily chemical, cosmetic, food and beverage packaging lines.
When Do You Need a Double-sided Labeling Machine?
A double-sided labeling machine is designed for containers that require separate front and back labels in one continuous production process.
Front and Back Labels Are Different
Choose a double-sided labeler when the front label carries branding while the back label contains ingredients, instructions, regulatory information or product specifications.
Flat, Square or Oval Bottles
Containers with two defined labeling surfaces are better suited to dual labeling heads than conventional round bottle wrap-around systems.
Both Labels Must Be Applied in One Pass
Two labeling heads can apply the front and back labels during the same conveyor cycle, reducing manual handling and avoiding a second labeling process.
Double-sided Labeling Machine Applications for Different Industries
This automatic double-sided labeling machine is widely used for cosmetic bottles, detergent bottles, food containers, beverage bottles and pharmaceutical packaging that require accurate front and back labeling.
Cosmetic Bottles
Shampoo bottles, lotion bottles, skincare bottles and cosmetic containers.
Food & Beverage
Juice bottles, sauce bottles, condiment bottles and flat food containers.
Daily Chemical
Detergent bottles, cleaning product bottles and household chemical containers.
Pharmaceutical & Healthcare
Healthcare bottles, medicine containers and flat pharmaceutical packaging.
Designed for Stable Double-side Labeling
The machine focuses on accurate label placement, bottle stability and convenient adjustment for different container sizes.
Two-side Labeling
Applies front and back labels on containers in one continuous production process.
Stable Bottle Clamping
Guiding and positioning structure helps keep bottles stable during labeling.
Servo Motor Control
Servo-driven label feeding improves label placement accuracy and consistency.
Flexible Bottle Range
Suitable for flat bottles, square bottles, oval bottles and certain round bottles.
Touchscreen Operation
PLC and touchscreen control make parameter adjustment and product changeover easier.
Line Integration
Can be integrated with filling, capping, coding and downstream packaging equipment.
Key Components of Automatic Double-sided Labeling Machine
Understanding the labeling mechanism helps customers evaluate machine performance and application suitability.
Dual Labeling Heads
The machine is equipped with two independent labeling heads to apply front and back labels simultaneously. Each labeling unit can be adjusted according to bottle size and label position.
Bottle Guiding & Stabilization
Adjustable guide rails and handling mechanisms help keep flat, square and oval bottles stable during conveyor transfer and labeling. Additional alignment devices can be configured when required by the bottle shape.
Servo Label Control
Servo-driven label feeding system provides precise label dispensing control and stable operation during continuous production.
How a Double-sided Labeling Machine Works
Bottle guiding, product detection and two independent labeling heads work together to apply front and back labels during one conveyor pass.
1. Bottle Infeed
Containers enter the conveyor and are guided toward the labeling section.
2. Bottle Alignment
Guide rails and positioning devices stabilize flat, square or oval bottles before labeling.
3. Front & Back Labeling
Two independently controlled labeling heads dispense labels onto the opposite surfaces of the container.
4. Label Pressing & Discharge
Pressing mechanisms smooth the labels before the finished bottle moves to downstream equipment.
Machine Parameters
Final specifications can be adjusted according to bottle shape, label size and production speed requirements.
| Machine Type | Automatic Vertical Double-sided Labeling Machine |
|---|---|
| Alternative Names | Double-sided Labeling Machine / Front and Back Labeling Machine / Flat Bottle Labeling Machine |
| Labeling Type | Front and back labeling / double-side labeling |
| Suitable Bottles | Flat bottles, square bottles, oval bottles and certain round containers |
| Labeling Speed | 40–200 bottles/min |
| Labeling Accuracy | ±1 mm |
| Bottle Height | 30–350 mm |
| Bottle Width | 20–150 mm |
| Label Width | 10–180 mm |
| Label Length | 20–350 mm |
| Control System | PLC + Touchscreen |
| Drive System | Servo Motor |
| Machine Size | 2600 × 1400 × 1500 mm |
| Machine Weight | Approx. 350 kg |
| Machine Material | SUS304 stainless steel and aluminum alloy structure |
How to Choose the Right Double-sided Labeling Machine
Before selecting a double-sided labeling machine, these factors help determine the right configuration for your bottles, labels and production line.
Bottle Shape
Flat bottles, square bottles and oval bottles require different guide systems and positioning methods. Sharing bottle photos helps us recommend the most suitable configuration.
Label Size
Label height, length and application position determine the labeling head configuration, sensor selection and adjustment method.
Production Capacity
Expected output affects conveyor design, servo motor selection and overall machine configuration for stable continuous operation.
Line Integration
If the machine connects with filling, capping, coding or cartoning equipment, we can design a complete automatic production line layout.
Available Custom Options
Optional systems can be selected according to bottle shape, label material and production line requirements.
Date Coding Printer
Print batch number, production date or expiry date during labeling.
Transparent Label Sensor
Suitable for clear labels used in cosmetic and premium packaging.
Vision Inspection System
Check label presence, label position and labeling quality.
Round Bottle Device
Optional rolling mechanism can support certain round bottle labeling applications.
Reject System
Remove products with missing or incorrect labels after inspection.
Connection Conveyor
Connect with upstream filling and capping equipment or downstream packing machines.
Double-Sided Labeling Machine Applications
Real bottle tests show how different container shapes and handling requirements affect front and back labeling. Machine configuration can be adjusted according to bottle stability, label position and production requirements.
Oval Bottle Double-Sided Labeling with Pneumatic Alignment
Oval bottles require stable orientation before front and back labels are applied. In this application, a pneumatic alignment mechanism assists with bottle correction and stabilization before the container enters the double-sided labeling section.
Why Is Pneumatic Alignment Used for This Oval Bottle?
Unlike a flat-sided container that can be guided against a defined surface, an oval bottle may require additional control to maintain the intended orientation as it travels through the conveyor. Pneumatic alignment assistance helps correct and stabilize the bottle before the two labeling heads apply the front and back labels.
The required handling method depends on the actual bottle geometry, surface, center of gravity, conveyor speed and label position. Bottle samples should therefore be tested before the final machine configuration is confirmed.
Double-Sided Labeling for Small Cosmetic Bottles
Small cosmetic containers can be more difficult to handle because their compact size provides less contact area for guiding and stabilization. This application shows continuous automatic conveying and double-sided labeling of small cosmetic bottles.
Small Cosmetic Container Labeling Application
Small cosmetic containers can require more careful guiding than larger bottles because their compact dimensions provide less contact area for stabilization. Stable bottle transfer helps maintain consistent label placement during continuous production.
The final machine setup should be selected according to the actual bottle dimensions, label size, labeling position and required production speed.
Watch the Machine in Operation
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Double-sided Labeling Machine Structure and Details
Review the dual labeling heads, bottle guiding system and machine structure to evaluate the configuration for your front and back labeling application.
Explore Other Labeling Machine Solutions
Different containers require different labeling methods. Explore more automatic labeling machines designed for various bottle shapes and production requirements.
Horizontal Round Bottle Labeling Machine
Designed for unstable cylindrical products such as ampoules, test tubes, syringes and small round bottles.
Learn More →Automatic Flat Top Labeling Machine
Ideal for labeling box lids, trays, cartons, bags and other flat surface products.
Learn More →Star Wheel Round Bottle Labeling Machine
Designed for continuous high-speed wrap-around labeling of round bottles requiring controlled bottle spacing and stable transfer.
Learn More →Common Questions About Double-sided Labeling Machines
These answers help buyers understand whether this machine is suitable for their packaging application.
What is a double-sided labeling machine?
It is a labeling machine that applies labels to the front and back sides of bottles or containers in one process.
Can one machine label different bottle sizes?
Yes. Different bottle sizes can usually be handled by adjusting guide rails, conveyor width and labeling parameters. For frequent product changeovers, quick adjustment mechanisms can also be customized.
Is this machine suitable for cosmetic packaging?
Yes. It is widely used for shampoo bottles, lotion bottles, skincare bottles, detergent bottles and other flat or oval cosmetic containers requiring front and back labels.
Can it label front and back at the same time?
Yes. The machine uses two labeling heads to apply both front and back labels during continuous operation.
Can it support transparent labels?
Yes. A transparent label sensor can be configured according to label material.
Can it connect with a filling line?
Yes. It can be connected with filling, capping, coding and packaging equipment.
What is the labeling accuracy?
Typical labeling accuracy is around ±1 mm depending on bottle shape, label material and machine adjustment.
What information should I provide for quotation?
Please provide bottle photos, bottle dimensions, label size, label position and expected speed.
Can you test my bottles before production?
Yes. Customers can send bottles, labels and product samples. We can evaluate labeling performance and recommend a suitable configuration before production.
How do you ensure labeling accuracy for different bottles?
We select suitable positioning devices, sensors and adjustment mechanisms according to bottle shape, label material and production requirements.
Labeling Machine Guides & Technical Articles
Learn more about labeling machine selection, working principles and production applications from our technical guides.
How to Choose the Right Labeling Machine for Your Production Line
Understand how bottle shape, label position, production speed and automation requirements affect labeling machine selection.
Read More →Vertical Labeling Machine: Types, Working Principle & Buying Guide
Learn different labeling methods and how automatic labeling systems improve production efficiency.
Read More →Position Labeling Machine for Round Bottles: Complete Guide
Explore bottle positioning technology and solutions for accurate labeling applications.
Read More →Need Front and Back Labeling for Your Bottles?
Send us your bottle photos, bottle dimensions, front and back label sizes and target production speed. Our engineers will evaluate the bottle guiding method, labeling-head configuration and suitable machine setup.
Send Your Bottle & Label Requirements