What Are Vacuum Cleaner Bags?

Vacuum cleaner bags are the receptacle for all of the dirt, dust, and debris that is collected from the floor or carpet on which the vacuum is used. The vacuum has its roots in the 1840s before which rugs and carpets were beaten with wooden implements to get rid of the dust and dirt held within them. Early vacuum cleaners lacked effective suction and they were improved upon over the following decades. The motor technology was one of the culprits for lack of suction, as well as the bags in which the dirt was collected.

Vacuum cleaner bags are the heart of any vacuum--outside of the motor. The bag is the collection area, as mentioned above, but functions in other capacities as well. Vacuum cleaner bags can be made from a variety of materials from felt to high grade cotton and from mesh plastics to paper. Early vacuum cleaner bags were essentially pillow cases, but due to their tightly woven fibers, airflow was reduced.

Today's vacuum bags are made in layers to allow more airflow. Airflow is the largest factor in suction for a vacuum; any vacuum user has noticed that suction is decreased or made negligible when the suction end of the vacuum is obstructed. If the entire intake of the hose or tube is covered then no suction or airflow can occur. Vacuum cleaner bags have minute holes in them to allow for airflow; the air being sucked into the vacuum has to go somewhere. If the incoming air has no outlet the bag would explode like a balloon.
Different bags are made with different diameter holes for airflow and suction; some manufacturers use smaller holes to enable the bag to catch more dust, or at least the smaller particles of dust. This does allow more dust and dirt to be collected but can reduce suction in some models. Other manufacturers utilize larger holes in the vacuum cleaner bags for increase suction and airflow. These larger holed bags increase suction but also increase the amount of dust that escapes through these holes.

Manufacturers have taken these aspects of the bags into consideration when designing their vacuums. Compensation for the lower suction, or increased dust expulsion, is often negated through the use of other filters and stronger motors.

Vacuum bags are layered in design. Each layer is offset from the one previous to limit the amount of dust that can escape through the holes. This way there is no direct route for the dust to escape. The number of layers per bag differs from company to company and will be determined by the design of the vacuum, more specifically the vacuum's suction power and motor design. Taking the motor's power into consideration allows for the best possible design of the vacuum bags--from the size of holes for airflow and the materials to be used.

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