The working principle of the external vacuum sealing machine is to use an external vacuum pump to extract the air inside the packaging bag, create a vacuum environment, and then seal it. The specific steps are as follows:

1. Place the bag into the vacuum chamber;

2. Start the vacuum pump to extract the air inside the bag;

When the vacuum degree inside the bag reaches a certain level, the sealer automatically starts to seal;

After the sealing is completed, the vacuum pump stops working and the bag can be removed.

The application range of external vacuum sealing machine is very wide, mainly used in the following fields:

Food industry: used for packaging meat, dried fruits, beans, vegetables, etc., effectively preventing food spoilage, spoilage, or mold growth.

• Pharmaceutical industry: used for packaging tablets, powders, oral liquids, etc., to prevent drug oxidation or contamination and extend shelf life.

• Cosmetics industry: it is used to package skin care products, liquid foundation, lipstick, etc. to maintain the quality and quality of cosmetics.

Electronic product industry: used for packaging batteries, electronic components, mobile phones, etc. to prevent oxidation or contamination.

In addition, the external vacuum sealing machine also has the following characteristics and application advantages:

• Efficiency: Adopting electronic constant temperature control machine and automatic conveying device to improve packaging efficiency.

• Universality: Suitable for sealing and bag making of all plastic films, widely used in industries such as food, cosmetics, and pharmaceuticals.

• Safety: Made of international standard food grade 304 stainless steel plate, with stable structure and high safety.

Customization: Customization can be made according to user needs to meet the packaging requirements of different industries.