Three side sealing bag production process

2022-05-23

Plastic bags can be divided into side sealing bags, bottom sealing bags, middle sealing bags and three side sealing bags according to the processing technology. Production of the time of the process is also different, especially three side sealing bags, in life can be used for food, cosmetics and other packaging bags, very common.
The production of three side sealing bags, every step is necessary, indispensable, interlocking, closely linked together.
(1) the premise of making three side sealing bags: the use of feeding rack, through a cylinder control iron slide up and down, convenient feeding, drum with snail QQ dead. After feeding, use a low pressure wide bag to bind the film. The reel rotates counterclockwise.
(2) The two step of the three-side sealing bag production is to use the tail frame cots, the two cots are pressed, driven by a small motor to rotate and traction film.
(3) The material receiving rubber roller, up and down two, take turns to replace the material
(4) In the middle process of making three-side sealing bags, printing steps are carried out: the upper and lower iron rollers in front of the Printing Machine are used for feeding and collecting materials. There is a tracking machine in front of the iron roller, until the tracking material swing error, control the printing error distance within 1MM.
(5) Printing machine offset printing, it is three-dimensional, the height of 4 meters, a circle of plastic bag film is estimated to be about 40 meters -- the structure of the film is constantly folded, can print 1 ~ 4 colors.
(6) Copperplate printing is in long shape, about 15 meters long, and it is estimated that 80 meters long for a circle of film. Can print 1 ~ 8 colors or 1 ~ 10 colors.
(7) Rolling curtain is generally made of mat or plastic, which mainly plays a role of pressure and tension control. An inductor behind the cursor detects whether there is a film in front to control the operation and stop of the tailstock cots motor. Stop when there is, and move when there is no.
(8) Pause board
Made of stainless steel, it acts as a flat film to prevent bag wrinkles and ensure bag size. So the pause board should be flat. Light weight items can be placed above the film to flatten the film.
(9) An important step in the three-side sealing bag: sealing

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