In the manufacturing industry, people have been able to hear the plastic processing technology in the mouth, but Xiaobian has not known what the plastic processing technology is, until Xiaobian entered a logo manufacturing manufacturer. Today, Xiao Bian takes PVC plastic processing as an example to tell you about the plastic principle and plastic process of PVC plastic processing.

First, the principle of PVC plastic processing

PVC plastic processing is produced by semi-automatic blister machine. The production process is as follows:

1 heating the positioning plate through an oven to a softened state;

2 Then, a confined space is formed between the blister mold and its periphery to instantaneously extract the air in the cavity;

3 tightly fix the plate on the surface of the mold;

4 Cool and shape to obtain the product.

Second, the working principle of the blister machine in plastic processing

The common PVC blister machines on the market are divided into pneumatic and electric types. Commonly used is a pneumatic type. Now explain the main working principle of pneumatic:

The principle is: pneumatic blister machine, using compressed air, driven by cylinder, working fast, by adjusting the input air pressure and air flow, the speed and pressure of the pressure plate can be adjusted, and the maintenance is convenient. simple.

Uses: The function of the main controller on the blister panel:

1 stamping time (mold time):

The time the platen descends from the initial state to the suction die until it returns to the original state.

2 hot mold time:

After the press plate is pressed into the plastic mold, the electric heating time is shorter than the pressing time.

3 voltage (current) selector:

The output is selected to remove the voltage of the heating element on the plastic mold. By adjusting the voltage level (for low voltage AC safe voltage), the current flowing through the heating element can be controlled to achieve temperature controlled heating.

4 ammeter:

It indicates the working current of the plastic mold and the hot plate, and it can be observed whether the heating plate is in working condition.

Third, PVC plastic processing production parameters

1 plastic time is divided into: stamping time and hot mold time

The stamping time is divided into: the time is short, the melting surface of the blister and the plastic blister are insufficiently condensed, the sticking is not easy, the forming time is long, and the production efficiency is low. The normal stamping time is longer than the hot stamping time.

Hot mold time: The time is too short, the glue is insufficient, the plastic blister and the blister are not tight, and pseudoplasticity occurs. Separation occurs when the box is thrown. The time is too long, and the more the amount of glue, the easier it is to create bubbles as a "candle" phenomenon, and there are charred blisters. Therefore, the hot mold time should be moderate.

2 voltage (current) selection

The voltage (current) file is large, and the greater the current flowing through the mold of the mold, the greater the likelihood of a "candle glue" phenomenon.

3 proofing of the plastic machine
The above is the principle and process of PVC plastic processing, I hope to help you.

Wuxi Jiahong Plastic Technology Co., Ltd. has nearly 30 years of experience in research and development and granulation of modified PVC compound. The professional technical service team can provide one-stop system solutions for customers. For more information about the product, please visit our official website: www.safsedu.com, consult online customer service or call the hotline. Fixed line: 0510-68755207 Mobile: 15190220696, we will be happy to help you.

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