1、制作三边封袋的前提：使用上料架，通过一个气缸控制铁杆上下滑落，方便上料，卷筒用螺扣扣死。上料后用一低压宽袋捆膜。卷筒逆时针转动。
1. Prerequisites for making three-sided bag sealing: using the feeding rack, controlling the iron rod to slide up and down through a cylinder to facilitate feeding, and screwing the drum. After loading, use a low pressure broad bag to wrap the membrane. The drum is counterclockwise.
2、采用尾架胶辊，将两胶辊压紧，由一个小电机带动其转动，牵引薄膜。
2. Use the tailstock cots to compress the two rubber rollers and drive them by a small motor to pull the film.
3、收料胶辊，上下二根，轮流替换收料。
3, take up cots, up and down two, alternately replace the collection.
4、制作三边封袋的中间过程，进行印刷步骤：印刷机前面二根上下铁辊，上放料，下收料。铁辊前有追踪机，直到跟踪料的左右摆动误差，控制印刷误差距离1mm内。
4. The intermediate process of making three-sided bags is to carry out printing steps: two upper and lower iron rollers in front of the printing press, feeding up and feeding down. There is a tracking machine ahead of the iron roller until the tracking error of the tracking material is controlled, and the printing error is controlled within 1mm.
5、卷帘一般用凉席或塑料作成，主要起到一个压料，张力控制的作用。光标后有一个电感，侦测前方有无薄膜来控制尾架胶辊电机的运转和停止。有则停，无则动。
5, rolling curtain is usually made of mat or plastic, mainly to play a pressure material, tension control role. There is an inductance behind the cursor to detect whether the front film has been used to control the operation and stop of the cotwheel motor. Some stop but no motion.
6、暂停板：不锈钢制成，起到放平薄膜、防止袋子褶皱、保证袋子尺寸的功能，因此暂停板要平。薄膜上方可放轻的物品压平薄膜。
6. Suspension plate: made of stainless steel, which can flatten the film, prevent the folding of the bag and ensure the size of the bag. Therefore, the suspension plate should be flat. Thin films can be placed on the top of the film to flatten the film.
7、光眼：通过跟足踪三边封袋子的印刷颜色不段的变化来控制袋子的长度，切割位置，以及色标的长度。光眼可通过调两端螺丝前后移动，光眼停位纠正（2-3mm）。可以在光眼正对着的薄膜下方垫张白纸增加它的灵敏性。如果图案复杂，也可以在图案上垫层白纸，保证光眼下方图案呈直线，前后无其它颜色，图案干扰。
7. Light Eye: The length of the bag, the cutting position and the length of the color mark can be controlled by changing the printing color of the bag on three sides of the heel track. The light eye can be moved back and forth by adjusting both ends of the screw, and the light eye is stopped for correction (2-3mm). The white paper can be added to the film under the light eye to increase its sensitivity. If the pattern is complex, it can also be padded with white paper on the pattern to ensure that the pattern under the eye is straight line, no other color around, pattern interference.
光眼选位：
Optical eye location:
①较平的直线。②图案前无其它图案干扰，否则影响光眼停位。
A straight line. There is no interference with other patterns before the pattern, otherwise, the eyes will be stopped.
8、三边封袋中最重要的一步：封口
8, the most important step in the three side sealing bag: sealing.
封刀呈三角形，两端各有一组滚轮，保证薄膜在封刀处平直运行。垫刀滚轮一般为耐热的硅胶滚轮。刀上和硅胶滚轮上都有一层耐热胶布。封刀两端有两个铜瓦，控封刀上下，控因此此处要经常加润滑油。
The sealing knife is triangular, and there is a set of rollers at each end to ensure that the film is straight running at the sealing knife. The knife roller is generally a heat-resistant silicone roller. There is a layer of heat resistant adhesive tape on the knives and silicone rollers. There are two copper tiles on both ends of the sealing knife, and the control knife is up and down, so the oil is often added here.
9、换刀布：先用砂纸打磨封刀；将刀布贴在刀中间，朝两侧赶，避免刀布中间有气泡，褶皱，否则会导致虚封。
9. Change the knife cloth: first polish the sealing knife with sandpaper; stick the knife cloth in the middle of the knife and drive toward both sides to avoid air bubbles and folds in the middle of the knife cloth, otherwise it will lead to false seal.
10、如果三边封袋制作的前十步有误差的话可以采用调位杠：通过调节螺丝来控制铁杠的高低，进而调节薄膜切割的位置。
10. If there are errors in the first ten steps of three-sided bag sealing, adjusting the position of the bar can be used: adjusting the screw to control the height of the bar, and then adjusting the position of film cutting.
11、瓦楞胶辊：上有弹簧，避免静电导致膜缠滚轮上，有一专门电机控制其运转。封刀前和切刀后都有专门的除静电装置（一铁杆，上有一排铁针）。
11. Corrugated rubber rollers: There are springs on the rollers to avoid static electricity, and a special motor controls their operation. There is a special device for removing static electricity before and after cutting.
12、三边封袋最后的步骤是采用切刀进行切割：有上下两个切刀，下切刀固定，刀刃向上倾斜5°角左右，靠上切刀下落切割薄膜。切刀多为铸铁，刀两端加润滑油。可通调节上切刀固定螺丝来控制其和下切刀接触时的前后距离。
12. The final step of sealing bags on three sides is to cut with a cutting knife: there are two upper and lower cutting knives, the lower cutting knife is fixed, the edge of the knife inclines upward about 5 degrees, and the film is cut down by the upper cutting knife. The cutter is mostly cast iron, and lubricants are added at both ends. The upper and lower cutter distance can be controlled by adjusting the upper screw fixing screws.
13、折叠：折叠分三步，制袋机自动折叠。如果客户要求包装时字朝外，上卷时，卷筒是顺时针旋转的。如果字朝里，上卷时，卷筒是逆时针旋转的。
13, folding: folding is divided into three steps, bag making machine automatic folding. If the customer asks to wrap the word out of the way, when it is rolled up, the drum is clockwise. If the word is in the middle and rolls up, the drum is counterclockwise.
14、三边封袋在这个时候就可以进行包装了，可根据客户要求包装，用塑料袋或纸箱包装。
14. Trilateral sealing bags can be packed at this time. They can be packed in plastic bags or cartons according to customer's requirements.