PLC & touch screen intelligent controlAdopts Mitsubishi PLC, inverter and servo motor, English-Chinese touch panel. Parameters like speed, length, winding angle can be set digitally. Stable running, easy operation, low labor requirementMade-in-Ch....
High precision forming & inline cuttingAutomatic angle adjustment for winding unit. Servo tracking cutting, cutting tolerance ±1.5mm. Equipped with dust collector for clean cutting surface. Square / rectangular paper tubes with neat corners, uniform wall thicknessMade-in-Ch....
Wide size & material adaptabilityOne machine can produce square & rectangular paper tubes, optional for octagonal shapes. Adjustable side length, wall thickness and paper layers. Works with kraft paper, supports double-sided gluing. Quick mold change for different tube sizes.
Solid & durable structureStainless steel glue tank and glue scraper, anti-corrosion and easy cleaning. Heavy-duty frame and high-precision guide rail, long service life, less maintenance downtime.
High production efficiencyContinuous spiral winding forming, production speed 3–10 m/min. Integrated unwinding, gluing, forming, cutting and discharging. Reduce waste and improve outputMade-in-Ch....
Eco-friendly finished paper tubesProduced square paper tubes are recyclable, high compressive strength. Widely used for packaging edge protector, construction formwork, industrial packaging core, furniture & glass protection, green packaging solution.
Safety & stable performanceWith paper break / paper shortage auto-stop protection. Low noise, reliable transmission system. CE available, one-year warranty and overseas after-sales support.

The square paper tube making machine is a high-efficiency, fully automated industrial winding equipment specially designed for producing high-precision square and rectangular paper tubes. Adopting mature spiral winding technology and integrated PLC intelligent control system, this equipment realizes one-stop automatic production from paper unwinding, gluing, forming, winding to fixed-length cutting. It solves the problems of low precision, uneven bonding and low efficiency of traditional manual or semi-automatic square paper tube processing, and can stably produce high-strength, smooth-surface and dimensionally standard square paper cores. Widely applicable to multiple industries such as packaging, construction, textile and logistics, it is ideal professional equipment for mass production of square paper tubes.

Core Features & Advantages
1. High Precision & Stable Molding
Equipped with customized precision forming molds and servo calibration system, the machine ensures neat tube edges, right-angle standardization and consistent overall dimensions. The finished square paper tubes feature uniform wall thickness, firm bonding and no deformation, fully meeting high-standard packaging and industrial supporting requirements. Replaceable molds support flexible switching of different tube specifications, realizing multi-size production with one machine.
2. Intelligent Automatic Control
Adopts famous-brand PLC controller and touch screen human-computer interaction system, with simple and intuitive operation. Users can directly set parameters such as tube length, winding layers and cutting speed on the screen. The equipment supports automatic counting, fixed-length cutting and fault alarm functions, effectively reducing manual operation errors and improving production consistency. The whole production process requires minimal labor, greatly saving labor costs.
3. Efficient & Energy-Saving Production
Optimized spiral winding structure and adjustable operating speed (1-26m/min) enable efficient continuous production. The equipment runs stably with low noise and low energy consumption, and supports long-time uninterrupted industrial operation. The automatic gluing system realizes uniform glue coating and quantitative gluing, avoiding glue waste and excess glue overflow, ensuring both production quality and environmental friendliness.
4. Durable & Easy Maintenance
The main body is made of thickened high-strength steel plate with anti-rust and wear-resistant treatment, which is sturdy and durable with long service life. Key transmission parts are refined and calibrated, with low failure rate. The modular structural design facilitates daily inspection, disassembly, cleaning and maintenance, reducing later maintenance cost and downtime.
5. Wide Compatibility & Strong Applicability
Compatible with various raw materials such as kraft paper, cardboard and composite paper. The produced paper tubes have adjustable specifications: inner side length ranges from 30mm to 250mm, wall thickness from 3mm to 15mm, and winding layers can be adjusted from 3 to 26 layers to meet different strength and usage scenario requirements.
Working Principle & Production Process
The machine follows a standardized four-step automatic production process: First, the raw paper roll is automatically unwound by the unwinding system; then the automatic gluing system evenly coats adhesive on the paper surface; next, the paper strip is accurately wound and shaped into a square tube structure through the precision forming mold and spiral winding mechanism; finally, the fixed-length cutting system automatically cuts the finished tube according to the set size, and the finished product is output automatically. The whole process is highly automated with smooth operation and no intermediate manual intervention.

Product Application
The finished square paper tubes are widely used in diverse fields: packaging industry for tea boxes, gift boxes, hardware and electronic product outer packaging support; construction industry for concrete square column formwork and building edge protection; textile and film industry as square core brackets for winding fabrics, plastic films and aluminum foils; logistics industry as paper corner protectors and packaging reinforcing tubes to improve product transportation compression resistance and anti-collision performance.
Applicable Paper Type: Kraft paper, composite paper, cardboard
Square Tube Size Range: 30×30mm - 250×250mm (customizable)
Tube Wall Thickness: 3mm - 15mm (adjustable)
Winding Layers: 3 - 26 layers
Production Speed: 1 - 26m/min (stepless speed regulation)
Control System: PLC + Touch Screen Intelligent Control
Cutting Precision: ±1mm
Working Voltage: 380V/220V 50Hz (customizable)
Machine Features: Automatic gluing, winding, forming, fixed-length cutting, counting
Warranty: 12 months professional warranty and lifelong technical support
The equipment is packed with standard export wooden cases for shockproof and moisture-proof protection to ensure intact long-distance transportation. We provide complete pre-sales parameter customization, in-sales installation guidance and after-sales technical training services. Professional technical support is available all year round to solve equipment operation and maintenance problems for customers, helping users achieve stable and high-yield production.

| Item | Specification |
|---|---|
| Model | SANSPT-PLC250 |
| Product type | Square /rectangular paper tube(可定制椭圆、八角管) |
| Tube side length | 18–250 mm |
| Tube wall thickness | 3–7 mm |
| Paper layers | 3–13 layers kraft paper |
| Production speed | 3–10 m/min(depends on tube size & paper quality) |
| In-line cutting length | Adjustable, max 2500 mm |
| Cutting tolerance | ±1.5 mm |
| Cutting method | Automatic circular saw with dust collector, servo tracking cut |
| Gluing system | Double surface gluing; stainless steel glue tank & scraper |
| Control system | Mitsubishi PLC + 6” touch screen + inverter + servo motor |
| Power supply | 380V / 3Ph / 50Hz |
| Total power | 15 KW |
| Pressure roller | 12 pcs (3 pcs per side) |
| Overall dimension(L×W×H) | 4200 × 1500 × 1800 mm |
| Machine weight | Approx. 4000 KG |
| Operators | 2–3 persons |
| Paper material | Kraft paper ≥175 gsm |
| Standard accessory | 1 set forming mandrel |
Full servo & PLC touch controlStable winding angle adjustment, automatic tension control, consistent wall thickness and square shape, low reject rate. Easy parameter setting via HMI screen.
High production efficiencyIntegrated unwinding, gluing, spiral forming and inline cutting. Continuous running, only 1–2 operators needed, greatly cuts labor cost.
Wide size flexibilityProduce square / rectangular paper tubes. Change mandrel quickly to adjust side size, wall thickness and cutting length, fit multiple packaging orders.
Double-sided gluing & strong finished tubesUniform glue application, good adhesion. Square paper tubes own high compression resistance, ideal for protective packaging, artwork, furniture edge protection, construction formwork.
Low material waste & dust collectionPrecise glue dosing saves glue. Dust removal device during cutting keeps workshop clean, less paper scrap.
Robust mechanical structure & easy maintenanceHeavy-duty frame, stainless steel glue tank. Reliable for long-time continuous operation; online technical support available.
Eco-friendly packaging solutionFinished square paper tubes are fully recyclable kraft paper packaging, meets global green packaging requirements.