The selection of the pouch requirements (2)
3.Easy to tear, vent location and form
Easy to tear mouth, vent hole is an additional way to the packaging pouch for convenient use, different manufacturers have different requirements for the two.
There are many forms of easy tearing. At present, it is more commonly used to punch at the edge of the banding, which is easy to operate and direct to use.
There are a variety of ways such as pocket pinhole, round hole and so on, and different product requirements of the location, the number is not the same, such as for the packaging of powder solid pocket vent, can be arranged along the pouch longitudinal or horizontal equal spacing or spacing several pinholes, in this way, can be convenient to contain the material inside the exhaust, reduce the transportation, storage damage rate.
4. Cutter form
The cutter generally has a straight line shape, tooth shape, etc., and tooth shape has a straight edge tooth shape, arc tooth shape and other forms. Linear cutter is the most common form of pouch making, and the tooth cutter must pay attention to whether the shape of the upper and lower knives is the same, for different pouches, must pay attention to the direction of the material or the installation position of the upper and lower cutter, to avoid the opposite shape of the upper and lower teeth.
5. The starting position of the back sealing pouch
The position of the back sealing pouch is determined according to the pattern design. Usually, the sealing position is located in the center of the pouch surface, but sometimes considering the beauty, continuity and integrity of the pattern, the back sealing position deviates from the center line with the design pattern, and different products will be different.
