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)

FOSHAN ZCHONE PACK Machinery Co., Ltd, was founded in 2013, the company is located in FOSHAN Sanshui district Yundonghai Yunju Industrial park, it is a professional engaged in automatic packaging machinery design, production, sales and after-sales services as one of High-tech enterprises, mainly committed to the automatic packaging line research and development and manufacturing, mainly producing full automatic Pre-made pouch machine, full automatic Pre-made pouch vacuum machine, Horizontal type Pre-made pouch machine and other related equipment.