Special-shaped bag production process of the whole analysis

A, reviewing and layout in reviewing, typesetting process with the special-shaped bag, bleeding, direction and channel number is out of the bag several key control key problems must be. 1, the control of hemorrhage abnormity bag design draft if there is no bleeding, produce special-shaped bag will appear in the cutting process & other; Cut more is missing content, cut less appear white & throughout; Problems, serious impact on product appearance. The bleeding a special-shaped bag, as a general rule, be more than 3 mm or 3 mm. 2, the choice of direction out of the bag out of the bag direction generally have & other; Cross out & throughout; And & other Longitudinal throughout the &; Two kinds. Special-shaped bag of positive words and pattern on the left or right when the bag is first came out & other; Cross out & throughout; Feet, special-shaped bag of positive words, pattern or head when bag is first came out & other; Longitudinal throughout the &; 。 The direction out of the bag should be selected considering the characteristics of the special-shaped bag, processing and equipment characteristics, factors such as customer requirements, improper choice will greatly affect the production efficiency, and even lead to can't production. 3 control channel number, channel number refers to consider horizontal when layout on the number of one-time can produce special-shaped bag, it is also a special bag key project layout, layout should be considered when processing difficulty and the production efficiency of the two factors. 2 bag, bag making, and die, die process is forming process of special-shaped bag, there are two problems worthy of note: namely the sealing knife design and the choice of the ways of forming. 1, the design of the sealing knife knife position to be accurate, to be in conformity with the abnormity of the pattern on the bag, and for the pincer-like device reserved the right location and size of straw. If the pincer-like device reserved position size is too large, the sealing is not easy to seal up, prone to bag leakage problem; If the reserved position size is too small, straw can be difficult to pack. When determining reserve pincer-like device size, generally based on the perimeter of a straw, if there are any irregular shape of straws, can use soft wire around a straw for a week, on the basis of the cord length half extra allowance of 2 ~ 3 mm. In the process of sealing side, be sure to keep the uniform sealing gap between the mold and straw, avoid bag leakage problems because of poor air tightness. If found in the random detection abnormity bag air tightness is poorer, immediately stop check and polishing the sealing mould again. If it is found that the whole side of special-shaped bag sealing not firm, can be in one side of the seal not firm pad high temperature cloth to compensate. 2, the choice of the ways of forming (1) on the bag making machine directly out of the bag of the advantage of this method of molding is to save time, save trouble relative to the economy, and forming process and the sealing side is accomplished at the same time, the less & other; Size edge & throughout; And drip bag, sealing side is not firm. But its drawback is that the machine is difficult, as long as the design layout slightly have a problem, will bring a lot of trouble. To be on the bag making machine directly out of the bag, must design the knife mould and install it on the fixed sealing knife beam. Die cutter shape consistent with special-shaped bag, moreover also notice a tricky question: according to the shape characteristics of the special-shaped bag find several suitable points, a few small slits on the cutting die, Similar & other; Even the point & throughout; , as shown in figure 3) , the aim is to make the special-shaped bag in bag making machine cut would not be complete, under the influence of rubber roller traction can through this a few & other; Even the point & throughout; Cut abnormity bag smoothly to mouth, then cut in the mouth will abnormity bag completely cut, convenient bag and strapping packing. If there is no this a few & other; Even the point & throughout; , special-shaped bag would be easy to fall in bag making machine breakdowns. But now a new type of bag making machine through technology improvement, also have the bags, pressing and cutting out the function of the bag, but the price does not poor. Built in the cutting die, also should choose the appropriate cutter blade. Cutter blade sharpness and hardness are must meet certain requirements, both to ensure that the beam under the pressure of the spring cut the parts are cut down, also want to ensure the long time under the pressure of the blade will not produce the problem such as warp. Generally a good knife blade can make 100000 abnormity bag. In addition, because in the process of the die cutter to cut down will produce considerable pressure, so the fixed die cutter bar must be stable and can absorb a certain amount of weight; The deformation of the beam spring is close friends certainly, ensure that can produce a constant in the deformation process of pressure; Fixed die cutter and cutting force under pressure plate must be smooth, so pressure cut out abnormity bag would smooth without burrs. (2) on the punch machine produce bags according to the shape of the special-shaped bag processing mould, then on the die forming out of the bag. The advantages of this approach are: abnormity bag forming quality is better, less burrs, and can be a molding multiple abnormity bag. Its defect is: mold production cost is high, a special-shaped bag may need to use a few moulds, low efficiency; Mold cannot be Shared, the next time you produce other types of special-shaped bag, the original mould can't be used, a basic waste; Sealing side and forming cannot be completed at the same time, more time consuming. So the plan is only for temporary and difficult abnormity bag some live parts, large quantities of live parts are not suitable for taking this solution.