Views: 217 Author: Tom Publish Time: 2026-09-07 Origin: Hlunpack
Recent Project Delivery • Liquid Seasoning Packaging • Flexible Packaging + Equipment

The project combines packaging equipment, coding and flexible packaging materials in one coordinated delivery. The customer ordered an automatic three-side-seal liquid sachet packaging machine, a laser coding system and customized NY/LDPE printed roll film from HLunPACK.
By developing the packaging machine and roll film around the same product and production requirements, film feeding, sealing performance, coding position and machine parameters could be considered together before delivery. This approach helps reduce unnecessary adjustment during commissioning and provides a more practical route from roll film to finished sachet.
· Automatic three-side-seal liquid sauce sachet packaging machine
· Integrated laser coding system
· Customized NY/LDPE printed packaging roll film
· Machine-and-film compatibility testing before delivery
· Packaging, sealing and finished-sachet verification
Process: Roll Film Feeding → Liquid Filling → Three-Side Sealing → Laser Coding → Cutting → Finished Sachet Discharge

For this project, HLunPACK supplied a customized NY/LDPE laminated roll film developed around the liquid seasoning product and the operating requirements of the packaging machine.
Layer | Function | Role in This Application |
NY / PA | Outer functional layer | Provides toughness, mechanical strength and puncture resistance for forming, filling and handling. |
LDPE | Inner sealing layer | Provides flexibility and reliable heat-sealing performance for liquid sachet packaging. |
An optimized lamination process was used to balance mechanical strength, sealing reliability, machine compatibility, product protection and material cost. Rather than using a more complex laminate structure than necessary, the film was developed around the actual application to provide a practical and cost-efficient solution.
The laser coding system was integrated with the packaging machine and coordinated with the designated coding area of the printed roll film. This supports the application of variable information such as production dates, batch numbers or other production data during the packaging process, reducing additional offline handling.
For automatic liquid sachet packaging, film characteristics have a direct influence on machine operation. Film thickness, laminate stiffness, surface friction, sealing window, printing registration, coding position and bag dimensions can all affect feeding, sealing and cutting stability.
Because both the packaging machine and the customized roll film were supplied within the same project, HLunPACK was able to coordinate these variables during testing and commissioning. The result is a more integrated packaging solution designed around the customer’s actual product and production process.
This recent delivery reflects HLunPACK’s approach to combining flexible packaging materials and packaging equipment within one coordinated project. For sauce, seasoning and other liquid food applications, we can support customers with packaging roll film, liquid filling, sachet packaging, coding systems and packaging testing.
By coordinating packaging film and equipment together, HLunPACK aims to improve compatibility and help customers move more smoothly from material selection to commercial packaging production.