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The manufacturing process of the three-sided laminated bag.

Time:2022-09-24   Page View:306

1:Using the loading frame, through a cylinder to control the iron rod up and down slide, easy to load, the reel with a screw fastening dead. After loading, use a low-pressure wide bag to bind the film. The reel is rotated counterclockwise.

2: A tailstock rubber roller is used to pull the film by pressing the two rubber rollers together and rotating them by a small motor.

3: rewind rubber rollers, two upper and two lower, alternate rewind.

4: The intermediate process of making trilateral sealed bags, printing steps: two upper and lower iron rollers in front of the printing machine, upper release material, lower receiving material. There is a tracking machine in front of the iron rollers until the left and right swinging error of the material is tracked, and the printing error is controlled within 1mm distance.

5: The roller blinds are usually made of cooler or plastic, mainly playing a role of pressing material and tension control. There is an inductor after the cursor to detect whether there is film in front to control the operation and stopping of the tailstock rubber roller motor. If there is, it stops, if not, it moves.

6: Suspension plate: made of stainless steel, play flat film, prevent bag wrinkles, ensure the function of the bag size, so the suspension plate to flat. The film can be placed on the light items flattening the film.

7: Photo eye: By following the changes of the printing color of the three-sided sealed bags, the length of the bag, the cutting position and the length of the color mark can be controlled. Light eye can be moved forward and backward by adjusting the two ends of the screw, light eye stop to correct the position (2-3mm). A sheet of white paper can be placed under the film facing the photo eye to increase its sensitivity. If the pattern is complex, can also be in the pattern on the pad layer of white paper, to ensure that the pattern under the photo eye is straight, before and after no other color, pattern interference.
Photoelectric eye position: ① more flat line. (ii) no other pattern interference before the pattern, otherwise it affects the photoeye stop position.

8: Three edges of the composite bag in an important step: sealing. Sealing knife was triangular, both ends of a set of wheels, to ensure that the film in the sealing knife run flat and straight. Pad knife wheel is generally heat-resistant silicone roller. There is a layer of heat resistant tape on both the knife and the silicone tumbler. There are two copper tiles at each end of the sealing knife, which control the top and bottom of the sealing knife, and therefore lubrication should be added frequently.

9: Change the knife cloth: first use sandpaper to grind the sealing knife; stick the knife cloth in the middle of the knife and drive it towards the sides to avoid bubbles and folds in the middle of the knife cloth, otherwise it will lead to virtual sealing.

10: If there is an error in the first ten steps of making triple-edge laminated bags, an adjustment bar can be used: the height of the bar is controlled by adjusting the screw, which in turn adjusts the position of the film cut.

11: Corrugator rollers: they are spring loaded to prevent static electricity from wrapping around the rollers and have a special motor to control their operation. There are special anti-static devices (an iron bar with a row of iron pins) before and after the cutter sealing.

12: The end of the triple-edge composite bag is cut by a cutter, there are two cutters up and down, the lower cutter is fixed, the blade is tilted upward at an angle of about 5°, and the film is cut by the upper cutter falling down. Cutter is mostly cast iron, knife ends with lubricant. The upper cutter fixing screw can be adjusted to control the distance between it and the lower cutter when in contact.

13: Folding: folding in three steps, the bag-making machine folds automatically. If the word is facing outward when the customer wants to pack, the roll is rotated clockwise when it is wound up. If the words face inward, the roll is rotated counterclockwise when it is wound up.

14: The triple-sealed bags are ready for packing at this time, and can be packaged in plastic bags or cartons according to customer requirements.


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