Compound Food packaging BagAdvantages of the Product:
The middle seal bag compared to other packaging forms because there is no sealing edge on both sides of the bag body, so to ensure that the front of the package is complete, more beautiful. At the same time, the layout design can be designed as a whole, can maintain the image coherence. And because the seal is on the back, so the two sides of the bag can withstand more pressure, reducing the possibility of packaging breakage. And the same size of the bag using the form of Back seal seal is the smallest total length, which also in a certain sense to reduce the probability of sealing cracking.
Material:
In terms of material, the middle seal bag is no different from the general Hot seal bag. In addition, such as aluminum plastic, aluminum paper and other composite packaging is also a large number of changes in packaging form the most common is bagged milk packaging and large bags of melon seeds packaging. Back seal bag manufacturing and packaging difficulties in the hot seal T-shaped mouth, "T" shape of the hot seal temperature, not good grasp, temperature is too high, other parts will be because the temperature is too high and folds, the temperature is too low, and can not be very good heat seal "T" mouth.
Design:
In the design of the middle seal bag should pay attention to, the front pattern to be slightly larger than the finished product size, in order to prevent the bag after the front pattern is too small, at the same time to consider whether the upper and lower around the need for no seam, light point position setting is in line with the needs of cutting bag In addition, it is important to note whether you need to connect with a transparent or identical color between the finished patterns of the unit.
