Continuous packaging machine: Detailed explanation of principles and applications

In the field of packaging machinery, there is a type of machine called a continuous packaging machine. It is widely used for the display and protective packaging of products such as hardware, auto parts, electronic components, and daily necessities. It is a vacuum laminating packaging technology that achieves this through heating the film to soften it - vacuum suction - and then heat sealing and bonding. In simple terms, a transparent plastic film is used to tightly "stick" the product onto a cardboard, fixed in place, and the product can be directly seen through the transparent film.

I. Components of Continuous Packaging

1. Continuous Packaging Film: A thermoplastic film that becomes flexible and moldable when heated.

2. Heat Seal Coating: Applied to the substrate surface to achieve a strong heat-seal bond between the film and the substrate.

3. Base Material: Mainly paperboard or corrugated paperboard, which can be printed with graphics and has the functions of carrying and promoting.

In essence, the plastic film softens when heated, and the plastic and paperboard stick together. The product itself acts as a "mold", and when heated and vacuumed, the plastic film tightly adheres to the shape of the product and then adheres to the cardboard.

II. Benefits of Continuous Packaging

1. Barrier Protection (less prone to deterioration, moisture-proof)

2. Positioning Fixation (fixes the product, facilitating transportation)

3. Display (the transparent film allows you to directly see the contents inside)

4. Combined Packaging (can be packaged together with multiple items)

5. Brand Enhancement (can print patterns, strengthening product promotion)

III. How the Continuous Packaging Machine Works

1. Loading and Heating: The plastic film is clamped by the frame, and above it is heated to become soft; the product is placed on the cardboard and sent to the vacuum station.

2. Pressing and Vacuuming: The frame presses the soft film onto the product and begins to vacuum.

3. Forming and Sealing: When vacuuming, the film tightly adheres to the product and also adheres to the cardboard.

4. Output and Cutting: The packaged products are sent out.

IV. Classification of Continuous Packaging Machines

1. Manual Continuous Packaging Machine: Loading and placing the product and paperboard are all done by hand, with the remaining operations being simple.

2. Semi-Automatic Continuous Packaging Machine: Only the person places the product and paperboard, and the other machines perform the tasks automatically.

3. Fully Automatic Continuous Packaging Machine: It operates solely by a production line and does not require human intervention.

V. Packaging Methods of Continuous Packaging Machines

There are two main types. One is the ordinary heating film method, and the other is the flow infusion method. Among them, the ordinary heating film method is the most common.

1. Ordinary Heating Film Method: The film is first heated to become soft - vacuum suction - and then adheres to the product and the cardboard.

2. Flow Infusion Method: The plastic particles are heated to melt into a liquid film - directly extruded onto the product and cardboard - and then cooled and adhered firmly.

Summary: The continuous packaging machine is one of the simpler and more practical categories of packaging machinery. Its principle and operation are also straightforward. It is widely used in industrial fields and is also applied in our daily lives.