Thermal-forming vacuum stretching packaging machine

Abstract

The invention provides a thermal-forming vacuum stretching packaging machine comprising a heating plate, a vacuum forming chamber, an air blowing device and an air sucking device. Thermoplastic materials on a transmission device are heated by the heating plate and then enter the vacuum forming chamber. The vacuum forming chamber comprises an upper ventilating opening, a lower ventilating opening and a model chamber communicating with the two ventilating openings, wherein the upper ventilating opening is connected with the air blowing device, the lower ventilating opening is connected with theair sucking device, airflow generated by the air blowing device enters the model chamber through the upper ventilating opening to act on the thermoplastic materials, the lower ventilating opening communicates with micro holes distributed in the bottom of the model chamber, and the air sucking device enables the thermoplastic materials to be evenly stressed through the micro holes so as to reach the bottom of the model chamber. According to the thermal-forming vacuum stretching packaging machine, through a stretching technology that positive pressure and negative pressure are conducted simultaneously, the thermoplastic materials can be automatically formed on equipment, the forming rate is high, and the box form is stable.

Description

technical field [0001] The invention relates to the technical field of material forming, in particular, the invention relates to a thermoforming vacuum stretch packaging machine. Background technique [0002] In many fields such as food and medicine, prefabricated boxes are usually used to package the produced products, which makes these prefabricated boxes may cause secondary pollution during transportation. And in the pharmaceutical production factory, the blister machine is generally used to make product packaging. The blister machine is formed by negative pressure, and it is only for products with a shallow product depth. However, the conventional stretch packaging machine forms the material by means of model extrusion, the forming rate is low, and the shape of the forming is not stable enough. Contents of the invention [0003] The primary purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially the technical defe...

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Problems solved by technology

[0002] In many fields such as food and medicine, prefabricated boxes are usually used to package the produced products, which makes these prefabricated boxes may cause secondary pollution during transportation

And in the pharmaceutical production factory, the blister machine is generally used to make product packaging. The blister machine is formed by negative pressure, and it is only suitable for products with shallow product depth.

However, the conventional stretch packaging machine forms the material through model extrusion, the forming rate is low, and the shape of the forming is not stable enough.

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