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LABELING MACHINES
PLB831 Automatic Three-Side Sticker Labeling Machine for Boxes
Automatic Sticker Labeling Solution for Small Boxes and Rectangular Packages
Note: Technical specifications are for reference. Final performance may vary depending on product size, package shape, label material and machine configuration.
Product Introduction
The PLB831 Automatic Three-Side Box Labeling Machine is designed for applying self-adhesive labels across three connected surfaces of small boxes and rectangular packages.
Instead of placing a label on only one flat surface, the machine guides the sticker across the package and applies it continuously over multiple sides. The machine combines automatic product detection, label dispensing, multi-surface application and conveyor transport in one continuous process.
Applications & Sizes
The final machine setup should be confirmed according to the package dimensions, surface shape and required label position. Standard product size: 40–400 mm long × 40–200 mm wide × 0.5–150 mm high.
Standard label size: 6–300 mm long × 15–130 mm wide. The final label dimensions should be confirmed together with the product size and required three-side wrapping position.
PLB831
Suitable Products
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Candy boxes
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Electronic product packages
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Pocket perfume boxes
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Cosmetic boxes
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Small plastic containers
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Small cartons
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Consumer electronics packaging
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Personal-care packaging
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Other rectangular packages
PLB831
Application Industries
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Confectionery
Chewing gum, candy boxes and small snack packages.
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Electronics
Electronic accessory boxes, small device packages and consumer electronics packaging.
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Cosmetics and Personal Care
Pocket perfume packages, cosmetic boxes and small personal-care packages.
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General Consumer Products
Various small rectangular boxes and plastic packages that require three-surface sticker application.
PLB831
Key Features
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Three-Side Label Application
The PLB831 applies one label continuously across three surfaces of a package, giving a more secure and integrated appearance than single-surface labeling. The sticker can also serve as product identification, tamper-evident closure, decoration, promotion or package sealing support.
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Adjustable Top Labeling Structure
The height and position of the upper labeling mechanism can be adjusted according to the size and shape of the product. This makes it easier to adapt the machine to different box dimensions and label positions.
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Label Smoothing Brush
A brush in the labeling section presses the sticker evenly onto the package. This helps improve label adhesion, reduce trapped air and bubbles, and improve the appearance of the finished package.
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Touchscreen Control
The machine is equipped with a touchscreen control panel. Operators can adjust labeling speed, timing and production settings, and labeling positions can be adjusted when changing package sizes. The operating language can also be customized according to customer requirements.
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Label Detection Sensor
The label sensor identifies the gap between labels according to light transmission characteristics. This allows the machine to detect and separate labels automatically, improving labeling consistency and positioning accuracy.
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Automatic Product Detection
An electric-eye sensor detects products as they pass through the conveyor, and the control system activates the labeling sequence automatically, synchronizing label dispensing with product movement. Automatic detection, dispensing and transport reduce repetitive manual operation.
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Adjustable Conveyor Guides
The width of the conveyor guard rails can be adjusted according to product dimensions. Proper guide adjustment helps keep products aligned during transport and improves label application stability. The conveyor width can also be customized.
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±1 mm Labeling Accuracy
The standard labeling accuracy is approximately ±1 mm. Actual accuracy depends on package consistency, label quality, conveyor alignment, product positioning and machine setup.
How It Works
Products are placed on the conveyor and automatically transported toward the labeling station. An electric-eye sensor detects each incoming package and sends a signal to the control system.
The label sensor identifies the position of the self-adhesive label on the backing paper. The label is then dispensed and applied to the product through the customized labeling structure.
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Product Feeding
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Product Detection
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Label Detection
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Label Dispensing
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Three-Side Application
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Label Smoothing
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Finished Product Output
Key Machine Details
The main difference between the PLB831 and a conventional flat labeling machine is the customized three-surface application structure. The label is first dispensed onto the package and then progressively pressed across adjacent surfaces.
Working speed is approximately 15–20 pcs/min and labeling accuracy is approximately ±1 mm. Maximum label roll outer diameter Φ300 mm, inner diameter Φ76 mm. Actual output depends on product dimensions, label length, number of surfaces covered, conveyor speed, label material and product spacing.
PLB831
When Three-Side Labeling Helps
The PLB831 automates this process by controlling product positioning, label dispensing, label application angle, pressure and label smoothing for a more consistent three-side labeling result.
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Wrap over an edge
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Cover the top and sides
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Connect multiple package surfaces
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Improve tamper evidence
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Create a more integrated packaging appearance
PLB831
Optional Configurations
What's included: main labeling machine, conveyor, three-side labeling structure, top label application mechanism, label dispensing system, label roll holder, label rewinding system, label sensor, product detection sensor, adjustable conveyor guides, label smoothing brush, touchscreen control panel.
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Customized Labeling Fixtures
Customized labeling fixtures can be designed according to the customer's package.
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Customized Conveyor Width
The conveyor width can be customized according to production requirements.
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Customized Labeling Height
The labeling height can be customized according to the product and production requirements.
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Different Label Size Ranges
Different label size ranges are available.
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Customized Guide Rails
Guide rails can be customized according to the product and production requirements.
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Different Touchscreen Languages
The operating language can be customized according to customer requirements.
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Coding or Printing Equipment
Coding or printing equipment can be added according to the application.
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Production Line Integration
The machine can be integrated into a production line with upstream and downstream equipment.
PLB831
Connectable Equipment
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Product feeding conveyor
Upstream of the PLB831.
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Cartoning machine
Upstream of the PLB831.
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Packing machine
Upstream of the PLB831.
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Inspection conveyor
Upstream of the PLB831.
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Coding machine
Downstream of the PLB831.
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Inspection system
Downstream of the PLB831.
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Collection conveyor
Downstream of the PLB831.
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Carton packing equipment
Downstream of the PLB831.
PLB831 in Operation
Watch the PLB831 automatic three-side box labeling machine in operation.
PLB831
Frequently Asked Questions
PLB831
Need Help Configuring the PLB831 for Your Box?
Share your box size, label size, required labeling surfaces and target speed. PACKGENIX can review the product and labeling requirements and recommend the appropriate labeling structure and optional configuration.