Bubble film machine is a device used for producing bubble film, mainly composed of an extruder and a bubble die. So, what is the working principle of the bubble wrap machine?

The working principle of bubble film machine can be simply summarized as two steps: extrusion processing and bubble forming:

Extrusion processing

The core part of the bubble film machine is the extruder, which deforms polymer materials by squeezing them to produce the raw materials for bubble film. The extruder consists of a melting system, a filtering system, an extrusion system, and a regulating system. Among them, the melting system heats and melts plastic particles, the filtering system removes impurities and defective materials, the extrusion system pressurizes the molten material, and the regulating system controls parameters such as temperature, pressure, and speed.

The extruder sends the molten polymer material into the bubble die through a nozzle, which is equipped with an extrusion port and a cooler inside the die. The high-temperature film like material enters the cooler through the extrusion port, rapidly cools and solidifies, and stretches to form a thin film, which is then sent to the regulator and trimming machine to ultimately become a bubble film product.

Bubble forming

Bubble forming is the second core step of the bubble film machine. By injecting a large amount of air into the film product, bubbles of a certain size and specification are formed. In the process of bubble forming, it is necessary to ensure the size and uniformity of bubbles through the design and adjustment of the mold head, in order to ensure the stability and consistency of the quality of the produced bubble film.

In addition, the bubble film machine also includes subsequent processing steps such as winding, cutting, printing, etc. to meet the needs of different customers.

In summary, the working principle of the bubble film machine is to produce bubble film through two steps: extrusion processing and bubble forming. The extruder turns molten polymer material into a thin film, and then injects air into the film through bubble forming to form a bubble film. Its complex structure and mechanism ensure the quality and stability of bubble film products.

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