Question

which Allen is used in manufacture of polythene bags​

Answer 1

Answer:

The most notable of the bag ports' specifications are the parabolic lead and the alignment ribs. These two features, respectively, reduce the amount of time it takes to drain a bag by up to 24 percent and improve flow dynamics through the port. They promote a uniform flow by guiding the product into a consistent, rotational path while reducing flow separation from the wall.