Liquid Packaging Machine: Triangular Bags, Secondary Dosing Liquid Paste Products Equipped with Liquid Pump Ring Feeder

A pre-made bag liquid packaging machine is an automated device widely used in the food, beverage, daily chemical, pharmaceutical, and chemical industries. It is used to quantitatively fill and seal pre-made plastic bags containing liquids, sauces, pastes, and other products.

I. Core Concepts and Working Principle The core feature of a pre-made bag liquid packaging machine is: "Bags first, filling later."

It uses pre-printed, three-side-seal flat-mouth or stand-up pouches, completing the packaging process through automated bag picking, opening, filling, and sealing.

The basic workflow is as follows:

1. Bag Picking and Delivery: A robotic arm or suction cup precisely picks up a pre-made bag from the storage bin and places it into the bag clamping track.

2. Bag Opening: A special bag opening device (such as a vacuum suction cup, gripper, or bag extender) accurately opens the closed bag opening, preparing it for filling. The bag opening success rate is a key indicator.

3. Bag Opening Detection: A vision system or sensor detects whether the bag opening is fully open. If not, this station skips filling to prevent liquid spillage.

4. Quantitative Filling: The filling head descends or the bag rises to reach the open bag opening for high-precision quantitative filling. This is the core station.

For liquids, gravity filling, servo pumps (gear/plunger pumps), or time-pressure filling methods are commonly used.

For easily foaming liquids, the filling head can be designed to extend to the bottom of the bag for bottom filling or have anti-splash functionality.

5. Venting and Secondary Positioning: After filling viscous liquids or sauces, vibration venting may be necessary to remove air from the bag and ensure a smooth seal.

6. Heat Sealing: The bag opening is heat-sealed (e.g., heat sealing, ultrasonic sealing). Some models have vacuum or nitrogen filling functions, which can be performed before sealing to extend shelf life.

7. Finished Product Output: The sealed bags are released onto a conveyor belt, which can be connected to a weight checker, metal detector, inkjet printer, case packer, etc., to form a fully automated production line.

III. Key Application Areas Pre-packed pouch liquid packaging machines are particularly suitable for scenarios with high requirements for packaging appearance, sealing quality, filling accuracy, and flexibility:

High-end liquid foods: High-end edible oils, soy sauce, vinegar, honey, jams, condiments, hot pot base, curry, concentrated soups, etc.

Daily Chemicals and Personal Care: Shampoo, shower gel, conditioner, hand sanitizer, laundry detergent (especially stand-up pouch refills).

Pharmaceuticals and Health Products: Oral liquids, disinfectants, ointments, liquid health products.

Industrial and Chemical Industries: Industrial lubricants and chemical reagents requiring precise measurement (using pre-made bags of special materials).

Machine Specification:

(We can provide you with exclusive packaging machine customization services according to your needs! Of course,If you need, we can also provide you with customized bag service)