Fully Automatic RTV Tube Filling and Sealing Machine for High-Viscosity Sealants
Overview
The fully automatic RTV tube filling and sealing machine is a complete packaging solution designed for manufacturers of RTV silicone sealants, adhesives, and other high-viscosity products. Moving from manual or semi-automated processes to a dedicated automatic tube filling system delivers transformative benefits in product quality, production efficiency, and labor cost reduction .
This machine handles the entire packaging workflow from tube feeding to finished product output, requiring minimal human intervention and delivering consistent, professional results.
Key Processes
The machine integrates the following automated operations in sequence:
1. Automatic Tube Feeding
Tubes are loaded into the feeding hopper and vertically transferred into the first-station tube holder one by one, then conveyed with the rotating turntable to subsequent stations .
2. Positioning and Direction Correction
A downward pressure mechanism ensures precise tube placement, while an integrated automatic direction adjustment system corrects tube orientation to guarantee correct alignment before filling – eliminating manual sorting and positioning errors.
3. High-Viscosity Filling
A servo-controlled rotary piston or high-viscosity dosing system achieves filling accuracy of approximately ±1%, minimizing material waste from overfills or underfills . This is particularly critical for expensive specialty RTV silicones and adhesives.
4. Dual-Stage Sealing Preparation – Internal Heating + External Heating
Following filling, the sealing process proceeds in two coordinated heating stages:
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Internal Heating: Hot air is blown into the tube opening to pre-soften the inner wall, facilitating a uniform seal without damaging the outer tube surface or printed graphics.
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External Heating: The tube tail is clamped and heat-pressed from the outside to achieve a fusion seal through thermal compression.
This dual heating system ensures a strong, hermetic seal while preserving the tube's outer appearance. For plastic and laminated tubes, internal air heating technology prevents external wall damage while achieving firm, beautiful sealing results .
5. Automatic Tail Trimming
After sealing, the machine performs automatic tail trimming to remove excess material, producing a clean, smooth cut that enhances the professional appearance of the finished package .
6. Automatic Output
Finished tubes are delivered via automatic output, completing the fully continuous production cycle.
Technical Specifications (Reference Range)
| Specification | Typical Range |
|---|---|
| Production Speed | 30–60 tubes/min (up to 3,600/hour) |
| Filling Precision | ≤ ±1% |
| Tube Diameter | φ15–φ60 mm (customizable) |
| Tube Length | 60–250 mm (customizable) |
| Filling Volume | 3–250 ml/adjustable |
| Working Air Pressure | 0.5 MPa |
| Control System | PLC with HMI touchscreen, servo control |
Why Choose This Machine?
Superior Product Protection
RTV silicones cure upon exposure to atmospheric moisture. The machine's precise, hermetic tail seal ensures the tube is completely closed, preventing premature curing and extending shelf life .
Reduced Material Waste
High filling accuracy (±1%) minimizes costly overfills and underfills, an essential feature for expensive specialty sealants .
Increased Production Throughput
With output speeds of 20–40 tubes per minute, this machine significantly outperforms manual operations (typically 5–10 tubes/min), enabling manufacturers to meet larger orders and shorten lead times .
Consistent and Professional Packaging
Integrated filling, sealing, and tail trimming ensure all tubes are finished with a neat, uniform seal and clean cut, enhancing the product's professional appearance on retail shelves .
Reduced Labor Costs and Improved Safety
Automating the filling, sealing, and handling processes reduces the need for manual labor and repetitive tasks, lowering labor costs and minimizing workplace injury risks .
Applications
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RTV silicone sealants and adhesives
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High-viscosity chemical products
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Cosmetics and creams (larger tubes)
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Pharmaceutical and industrial compounds
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Toothpaste, gels, and pastes
Why Work With Us
As a professional manufacturer of tube filling and sealing equipment, we offer:
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CE and ISO9001 certified machinery
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Customizable configurations to suit different tube materials, sizes, and production requirements
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PLC and HMI control with Siemens or Delta components for reliable, precise operation
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Comprehensive after-sales support: installation guidance, operator training, and ongoing technical assistance
Contact us today to discuss your RTV packaging requirements and request a customized quotation.
