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How do automatic sachet filling and sealing machines work?

Whether you're new to packaging machinery or are considering adding pre-made pouch packaging to your product line, you may be interested in how automatic sachet filling and sealing machines operate. That's because these machines are simple to operate, easy to use, and offer superior aesthetics in the finished product.


Today, we'll take a step-by-step look at the process of turning an empty pre-made pouch into a shelf-ready finished product.

● Pre-made bags conveying

Pre-made bags are manually loaded by the operator into the bag magazine in front of the automatic bag packer. Bags are conveyed to the machine by the bag feed rollers. 

● Bag Clamping

When a proximity sensor detects a bag, the vacuum bag loader picks up the bag and transfers it to a set of grippers that will grab the bag as it moves around the rotary wrapper to a different "station".

These grippers can consistently support weights of up to 10 kg on the best bag filling and sealing machine models. For heavier bags, a continuous bag support can be added.

● Optional printing/embossing

Sachet fill and seal machines are available with thermal and inkjet printers. The printer can place the desired date/lot code on the pouch. Embossing option places raised date/lot codes into the pouch seal.

● Zipper or bag opening and detection

If the bag has a zipper to re-close, the vacuum suction cup opens the lower portion of the pre-made bag and the opening jaws grab the top of the bag. The opening jaws part outward to open the top of the bag and the pre-made bag is inflated by the blower. If the bag is unzipped, the vacuum suction cup will still open the bottom of the bag, but only the blower is engaged.

There are two sensors near the bottom of the bag to detect its presence. If no bag is detected, the filling and sealing station will not engage. If a bag is present but not properly placed, the bag will not be filled and sealed, but will stay on the rotating device until the next cycle.

● Bagging

For powder products, use a screw filler. In the case of liquid bag fillers, the product is pumped into the bag by a liquid filler with a nozzle. The filling equipment is responsible for the correct measurement and release of the discrete amount of product to be placed in each pre-made bag.

● Bag sealing and deflation

Before sealing occurs, two bleeder assemblies squeeze the remaining air out of the bag.

The heat seal closes at the top of the bag. Using heat, pressure, and time, the sealant layers of the preformed bags are bonded together to form a strong seam.  

● Cooling and Discharge

The cooling bar is passed through the seal to strengthen and level it. The finished bag is then discharged from the packaging machine onto a container or conveyor and can be transported to down-line equipment such as checkweighers, x-ray machines, case packing or carton packaging equipment.

 

pouch packing machine.jpg


Applications

This machine is suitable for food, pharmaceutical, chemical and cosmetic industries.

 

Warm Tips

When you send inquiry to us, please tell us the following information. According to your message, we will recommend the best solution for your reference. Thank you.

1. your product

2. Bag material

3. bag size

4. bag shape

5. bag weight

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