The fully automatic label separating and applying machine is a highly efficient, automated packaging device. It is mainly used to precisely and quickly apply labels on the surface of various products or packaging containers, and is widely applied in industries such as food, pharmaceuticals, cosmetics, beverages, electronics, and chemicals. Its core function is to complete label separation, conveying, positioning, and application through an automated process, significantly improving production efficiency, reducing labor costs, and ensuring consistent labeling quality.
The workflow of the fully automatic label separating and applying machine can be roughly divided into the following key steps:
Label Supply
Labels are usually placed in roll form (self-adhesive label rolls) on the unwinding mechanism. The unwinding device automatically releases the label roll according to the labeling speed, while maintaining stable conveying of the label tape through a tension control system to avoid wrinkles or misalignment.
Label Separation (Label Splitting)
The label tape enters the separation area through a guiding mechanism, and the separation of labels from the backing paper is achieved via a label peeling plate (an inclined hard plate): the backing paper changes direction at the peeling plate (usually a 90° or 180° turn), while the label, due to its own rigidity or adhesiveness, peels off from the backing paper and lifts, waiting to be applied. Some devices are equipped with air blowing and suction devices to assist in separation, ensuring labels peel smoothly without sticking together.
Product Conveying and Positioning
Products to be labeled enter the labeling area via conveyor belts (such as chain plates, belts, etc.). Positioning mechanisms (such as stop levers, centering wheels, sensor positioning) ensure precise product positioning, synchronized with the label application action.
Label Application
The separated labels are accurately pressed onto the designated positions of the product (such as flat surfaces, sides, curved surfaces, bottle mouths, etc.) through labeling mechanisms (such as pressure rollers, brushes, air blowing devices). Some devices are designed with multi-sided labeling functions (such as three-sided labeling, corner labeling) based on product shapes.
Inspection and Post-Processing
Some high-end models are equipped with label inspection systems (such as vision sensors) to detect issues like missing labels, misapplied labels, or skewed labels, and automatically reject unqualified products to ensure labeling quality.
By Product Shape
- Flat surface labeling machine: Suitable for flat products (such as boxes, cards, plates, etc.).
- Round bottle labeling machine: Suitable for cylindrical products (such as beverage bottles, medicine bottles, cans), capable of circumferential labeling or positioning labeling (e.g., aligning labels with patterns on the bottle body).
- Special-shaped bottle labeling machine: For irregularly shaped containers (such as flat bottles, square bottles, oval bottles), ensuring adhesion through special positioning and labeling mechanisms.
By Labeling Method
- Self-adhesive labeling machine: The most common type, using self-adhesive labels with a wide range of applications.
- Hot melt adhesive labeling machine: Uses hot melt adhesive to apply labels, suitable for scenarios with high adhesion requirements or solvent intolerance (such as glass bottles, high-temperature environments).
- Shrink film labeling machine: Cooperates with heat shrinkage technology; labels wrap the product and adhere tightly after heating and shrinking (such as full-body labels for beverage bottles).
By Level of Automation
- Fully automatic: Can be connected to production lines to realize unmanned operation, adapting to high-speed assembly lines.
- Semi-automatic: Requires manual placement of products and manual removal after labeling, suitable for small-batch production.
- High efficiency: Fast labeling speed; conventional models can handle dozens to hundreds of pieces per minute, meeting large-scale production needs.
- High precision: Through sensors and servo control systems, labeling precision can be controlled within ±1mm, ensuring labels are flat and not skewed.
- Flexibility: Can adapt to products and labels of different sizes and shapes by adjusting parameters, with convenient changeover operations (some models support quick mold change).
- Stability: Adopts wear-resistant materials and precision transmission structures, reducing downtime due to faults and lowering maintenance costs.
- Scalability: Can integrate additional functions such as printing, coding, and inspection (e.g., printing production dates and batch numbers on labels), enhancing the integration of the production line.
- Food and beverage industry: Labeling for bottle bodies, can bodies, and packaging boxes (such as mineral water bottles, cans, snack boxes).
- Pharmaceutical industry: Labeling for medicine bottles, instruction labels on medicine boxes, and medical device identification, which must meet GMP certification requirements for precision and cleanliness.
- Cosmetics industry: Labeling for skincare bottles and cosmetic boxes, emphasizing label aesthetics and positioning precision.
- Electronics industry: Applying parameter labels to circuit boards, batteries, and electronic components.
- Chemical industry: Applying warning labels and ingredient description labels to reagent bottles and paint buckets.
