
Vertical Paste Packaging Machine | Automatic Viscous Liquid Sachet Filling Equipment with Piston Dosing
Machine Overview and Functional Description
This automatic paste packaging machine is engineered to deliver reliable and consistent performance when handling viscous and semi-solid materials. Built with a compact vertical structure, it integrates film forming, dosing, sealing, and cutting into one continuous operation.
The machine body is constructed from stainless steel, providing excellent corrosion resistance and meeting hygiene requirements for various industries. Its intelligent control system utilizes a microprocessor-based interface with a clear display, allowing operators to easily adjust parameters such as filling volume, bag length, and sealing temperature.
At the core of the system is a pneumatic piston dosing unit, which ensures stable and repeatable filling accuracy even for dense or sticky products. Compared to gravity-based systems, it effectively eliminates issues such as uneven filling or material dripping.
The packaging process is controlled by a photoelectric tracking system, which accurately aligns the film and ensures consistent cutting positions. This guarantees uniform bag appearance and minimizes material waste.
The machine also supports multiple optional functions, including batch coding, perforation, chain bag output, and gas flushing. Its modular design allows easy customization based on different production requirements.
Overall, this equipment provides an efficient and cost-effective solution for small to medium-scale viscous product packaging.
Application Areas and Suitable Materials
1. Food Processing Industry: Sauce, Honey, Chili paste, Syrup, Condiments, etc
2. Cosmetics & Personal Care: Facial cream, Gel, Lotion, Hair conditioner, etc
3. Pharmaceutical Industry: Oral solutions, Medical gels, Nutritional liquids, etc
4. Industrial & Chemical Sector: Adhesive, Sealant, Lubricating paste, Construction additives, etc
Best suited for: Products with high viscosity, poor flowability, or temperature sensitivity.

Technical Specifications
| Paste Packaging Machine | |
|---|---|
| Bag style | Three-side seal |
| Packing speed | 24-60 bag/min |
| Bag length | 30-175mm |
| Bag width | 25-145mm(requires changing the forming collar) |
| Filling range | 20-100ml(depending on product requirements) |
| Power Consumption | 1.8kw |
| Weight | 280kg |
| Air pressure | 0.6-0.7MP |
| Dimensions | 1150*700*1750mm |
| Carton Size | 1100*750*1820mm |
Structural Design and Working Principle

1. Piston Filling Unit
The machine uses a piston-driven dosing mechanism powered by compressed air. This system provides high filling accuracy and stable output, especially for thick or sticky materials, ensuring clean and controlled discharge without dripping.
2. Sachet Forming Device
Designed for three-side sealing bags, the forming system ensures precise film shaping and consistent bag dimensions. The bag width can be adjusted to accommodate different packaging specifications.
3. Intelligent Control Panel
The integrated control system allows operators to easily manage key parameters such as filling volume, sealing temperature, and cutting length. The interface is intuitive and suitable for both experienced and new users.
4. Material Hopper
The stainless steel hopper ensures smooth feeding of materials into the dosing system. Its design supports stable flow and can be adapted for different material characteristics.
On-Site Machine Images
Customer Applications and Delivery Cases
FAQs
6. FAQ
Q1: What kind of products can this machine handle?
It is designed for viscous, semi-liquid, and paste-like materials such as sauces, creams, and gels.
Q2: How does the machine ensure accurate filling?
The piston dosing system delivers precise volumetric control, ensuring consistent filling for each sachet.
Q3: Can the bag size be adjusted?
Yes, the machine allows adjustment of bag length and width within a certain range.
Q4: Is it suitable for small packaging sizes?
Yes, this machine is optimized for small-dose sachet packaging applications.
Q5: What optional features are available?
Optional features include date coding, perforation, chain bags, and gas flushing systems.
Compliance and Certification Standards
At HONGDI Machine, we prioritize operational safety, electrical stability, and rigorous hygiene across all our custom industrial machinery. As a verified SGS-audited manufacturer, our equipment undergoes strict testing to meet and exceed global manufacturing regulations.
As demonstrated in the certification documents, our core product categories hold official CE Certifications, fully complying with the strict European Machinery Directives and Electromagnetic Compatibility (EMC) standards.
Key safety and quality guarantees include:
Certified Safe Operation: Advanced electrical and mechanical engineering that protects your facility’s personnel and ensures uninterrupted daily workflows.
Sanitary Stainless Steel Construction: Premium food-grade stainless steel contact parts designed for simplified washdowns, preventing cross-contamination and meeting strict food safety compliances.
Global Export Readiness: Dependable, customized equipment built to perform seamlessly in diverse international manufacturing environments.
Whether you are integrating a complete automated production line or a standalone unit, our CE-certified systems guarantee stable, continuous operation while protecting your product’s integrity.














