Single-sided open-end continuous roll packaging film is a PE film packaging material supplied in rolls with one side pre-cut, designed for use with pre-cut continuous roll bag packaging machines. During use, the machine pulls the film from the roll, and an operator manually places the product into the bag through the open side; the machine then seals and cuts the bag. Common bag widths range from 50 to 240 mm, and bag lengths range from 50 to 400 mm. The material is primarily PE, making it suitable for packaging scenarios involving small to medium batches and frequent changes between bag types.