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Sachet Packing Machine

Irregular Shape Liquid Sachet Packing Machine

Technical details

ModuleSpecificationEngineering Value
Capacity30–40 cycles/minOptimized for irregular contour cutting stability
Sachet Length120–150 mmSuitable for compact single-dose applications
Sachet Width50–70 mmErgonomic design for easy handling
Filling MethodPeristaltic pump / Ceramic pumpClean filling and suitable for gel or liquid products
Filling Range10–30 mlIdeal for energy gel, honey, and functional liquids
Film MaterialComposite film (PET/PE, NY/PE)Strong sealing and good flexibility for shaping
Cutting TypeCustom contour cutting (die cutting)Enables irregular shape design
Sealing Type4-side sealEnsures sealing strength for liquid products
Sealing Width5–7 mmImproves seal integrity and prevents leakage


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APPLICATIONS

This solution is designed for liquid and semi-liquid products packaged in irregular shape sachets, widely used in:

  • Energy gel (sports nutrition)

  • Functional liquid supplements

  • Honey, syrup, and viscous liquids

  • Cosmetic or pharmaceutical gel products

Unlike standard formats, this machine enables custom-shaped sachet packaging, improving product differentiation and user experience.


BAG SAMPLES

VIDEOS

Irregular shape liquid sachet

Irregular shape liquid sachet

OPTIONAL DEVICES

1. Automatic Liquid Feeding System (With Transfer Pump)

  • Includes storage tank + transfer pump

  • Continuous supply of liquid to hopper

Purpose:
Ensures stable feeding and avoids production interruption

Recommended for:

  • High-speed multilane production

  • Long continuous operation



2. Liquid Level Control System (Auto Level Sensor)

  • Maintains constant liquid level in hopper

  • Automatic feeding control

Purpose:
Prevents filling fluctuation caused by pressure variation

Critical for:

  • Multilane synchronization

  • Small-dose accuracy



3. CIP Cleaning System (Clean-In-Place)

  • Automatic internal cleaning of pipelines and pump system

  • No need for manual disassembly

Purpose:
Reduces downtime and improves hygiene

Recommended for:

  • Food and beverage applications

  • Frequent product switching



4. Anti-Static Device (Film Control)

  • Eliminates static on film surface

  • Improves film separation and stability

Purpose:
Prevents film misalignment and feeding issues

Important for:

  • Thin film materials

  • High-speed multilane machines



5. TTO / Laser Coding System

  • Prints production date, batch number, or QR code

  • Synchronized with machine speed

Purpose:
Ensures product traceability and compliance

Options:

  • TTO (thermal transfer)

  • Laser coding



6. No-Drip Filling Nozzle System

  • Anti-drip design for liquid filling

  • Prevents contamination in sealing area

Purpose:
Improves sealing quality and reduces leakage risk

Critical for:

  • Syrup

  • Slightly viscous liquids



7. Heated Hopper / Jacketed Tank (For Viscous Liquids)

  • Temperature-controlled hopper

  • Maintains material flow consistency

Purpose:
Improves filling stability for thick or temperature-sensitive liquids

Recommended for:

  • Gel products

  • Semi-viscous liquids



8. Nitrogen Flushing System (Optional)

  • Injects nitrogen into sachet before sealing

Purpose:
Extends shelf life and reduces oxidation

Applicable for:

  • Beverage

  • Food liquid products



9. Finished Product Conveyor & Sorting System

  • Automatic product discharge

  • Optional rejection system

Purpose:
Improves downstream handling efficiency



10. Cartoning Line Integration (End-of-Line Automation)

  • Connects packing machine with cartoning system

Purpose:
Enables fully automated packaging process
Reduces labor cost



Engineering Summary

Optional configurations should be selected based on:

  • Liquid characteristics (viscosity, hygiene requirement)

  • Production speed and lane number

  • Level of automation required


DESCRIPTION

Product Overview – Irregular Shape Liquid Sachet

The irregular shape sachet features:

  • Custom contour design (non-rectangular)

  • Ergonomic structure for easy handling

  • Easy tear opening

  • Compact single-dose format



Packaging Format & Technical Features

  • Bag type: Irregular shape 4-side seal sachet

  • Cutting type: Custom contour die cutting

  • Sealing type: Precision heat sealing

  • Optional: Easy tear notch / round corner



Engineering Considerations

Compared with standard sachets, irregular shape packaging requires:

  • Higher cutting precision

  • More complex synchronization between sealing and cutting

  • Stable film tracking



Relation to Standard Sachet Packaging

Irregular shape sachets are developed based on standard liquid sachet technology, with additional contour cutting.

 See also: Standard Liquid Sachet Packing Machine 



Machine Configuration – Multilane Irregular Sachet System

  • Multilane design (4–10 lanes)

  • Servo-driven film pulling

  • Liquid dosing system:

    • Piston pump (for higher viscosity)

    • Peristaltic pump (for clean and flexible production)



Performance

  • Filling range: 2–30 ml

  • Accuracy: ±3%

  • Speed: Depends on shape complexity



Application Scenarios

1. Sports Energy Gel Packaging

  • Single-use gel sachets

  • Portable for outdoor activities

  • High consumption frequency



2. Functional Liquid Supplements

  • Vitamin gels

  • Nutritional boosters

  • Herbal liquid products



3. Honey & Syrup Sachets

  • Natural honey packaging

  • Syrup or viscous liquid products



Advantages of Irregular Shape Sachets

1. Product Differentiation

  • Unique shape improves shelf visibility

  • Strong brand identity



2. Better User Experience

  • Easy to open and consume

  • Ergonomic design



3. Flexible Design Capability

  • Customizable shapes based on product needs



Optional Devices

Optional DeviceFunctionEngineering Value
Custom Die Cutting SystemCreates irregular shapeEnables complex bag design
Anti-Drip NozzleImproves filling cutoffPrevents sealing contamination
CIP Cleaning SystemInternal cleaningSuitable for food and gel products
Inkjet Coding SystemFlexible printingSuitable for small sachet formats


FAQ – Irregular Shape Liquid Sachet Packing

1. Can this machine produce standard sachets as well?

This machine is optimized for irregular shapes.
For standard formats, refer to:

Standard Liquid Sachet Packing Machine 


2. Is it suitable for gel products?

Yes. It supports liquid to semi-viscous products depending on pump selection.



3. What determines the sachet shape?

The shape is defined by the cutting mold (die), which can be customized.



4. Does irregular shape affect speed?

Yes. More complex shapes may reduce maximum speed due to cutting and synchronization requirements.



Conclusion

The irregular shape liquid sachet packing machine is ideal for manufacturers seeking:

  • Unique packaging formats

  • High product differentiation

  • Flexible multilane production




Looking to develop a custom-shaped liquid sachet product?

Send us:

  • Sachet design

  • Filling volume

  • Product viscosity

We will provide a custom packaging solution tailored to your application.


Call Us

+86 181 3850 4633

Our Address

Guangdong Province, China

ABOUT US

Foshan Samfull Packaging Machinery Co., Ltd. is a high-tech enterprise engaged in the production, sales and research and development of intelligent packaging machines.

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