The blister machine is a machine that absorbs thermoplastic coiled materials such as PVC, PE, PP, PET, HIPS, etc., which are heated and plasticized, into various shapes of packaging and decoration boxes, frames and other products. Using the vacuum suction generated by the vacuum pump, the heated and softened PVC, PET and other thermoplastic plastic sheets are blistered into various shapes of vacuum hoods, blister trays, bubble shells, etc. through molds.

It has the following characteristics:

1. High efficiency and energy saving, more than 70%.

2. The rotary vane pump adopts a 13kg load air compressor head, and operates under light load under semi vacuum condition, with a theoretical life of 400000 hours (equivalent to 80 years), and no head change is required within 20 years.

3. No need for a lot of water, saving water bills and water pipeline works.

4. The rotary vane pump adopts frequency conversion control to automatically adjust the vacuum degree, provide stable vacuum pressure, and reduce production failures.

The vacuum pump is mainly used in the forming process of blister. The suction generated by the vacuum pump is used to heat and soften the blister material and stick it to the blister abrasive tools to form products. There are mainly two categories of thick materials and thin materials according to the thickness of the materials.

How to select the vacuum pump for the plastic suction machine:

When selecting the vacuum pump for the plastic suction machine, it is required to select the vacuum pump according to the specific process, mainly taking the following two main parameters as reference:

① Vacuum degree: the so-called vacuum degree is an expression of the degree of air rarefaction, usually expressed in units such as Pa, mbar Mba, mmHg, etc.

After the forming of blister products, most of the product bubbles are caused by the product defects because the vacuum degree cannot meet the requirements. Compared with products with deep grooves, the requirements for vacuum degree are relatively high.

② Flow: refers to the amount of fluid pumped by the vacuum pump through the closed pipe or effective cut-off in unit time, usually expressed in m3/h, l/s, l/min.

Vacuum flow is an important sign to measure suction. When selecting a vacuum pump, we should pay attention to the specification and thickness of the product to calculate how much air needs to be pumped for an hour or a minute, so as to determine how much flow the vacuum pump needs.

Compared with this kind of cooler mechanical equipment, many users often neglect its maintenance. The application of rotary vane vacuum pump in the plastic suction machine, like other mechanical equipment, requires routine maintenance to give better play to its performance. We need to pay attention to the following problems during maintenance:

1. The vacuum pump oil shall be replenished in time, and the color shall be checked by the oil lens. If the color becomes black and thick, it must be replaced.

2. In case of abnormal noise in the vacuum pump, it is necessary to stop the pump operation, check the causes of noise in the pump, and prevent the pump cylinder from wearing.

3. The oil mist separator of the built-in vacuum pump shall be replaced in time, usually every 2000 hours, to prevent the pump from smoking due to the failure of the oil mist separator.