Open Mouth Bag Filling
A variety of solid bulk materials are packaged in open mouth bags for use by consumers and businesses. Many industries use open mouth bags to distribute their products and provide a crisp, clean, aesthetically appealing product at the point of sale.. The wide top end of the open mouth bag allows for a variety of different products with widely varying mesh sizes, bulk densities and flow characteristics to be packaged. The open mouth bagging scales that fill these containers can be either Gross Weigh or Net Weigh scales.
Open mouth bags are typically constructed of kraft (paper), poly woven mesh, plastic film or burlap. All of these bags need to be closed after filling by using a sewing head, heat sealer or pinch bag closer.
The process of open mouth bag filling begins with the placement of an empty bag on or below the fill spout of the bag scale. For gross weighing, the fill spout of the packer is suspended from an electronic load cell that accurately weighs the amount of product in the bag. In net weigh applications, the material is pre-weighed in scales above the open mouth bag filler, then discharged into the open mouth bag. The bag can be placed on the fill spout by hand or by an automated open mouth bag placer. Once the bag is filled, it is released and drops to the sewing conveyor belt.
Open mouth bag fillers can use a variety of methods to transfer the product from the bulk bin to the bag. Some of the most common techniques are as follows:
Gravity scales use the bulk density and flow characteristics of the product to fill the open mouth bag by use of cutoff gates. These gates close when the bag has reached the desired weight. Free flowing granular products such as grains, fertilizer, salt and small pellets are packaged on these scales.
Vibratory feeder scales utilize side to side movement of the vibratory tray to transfer the product into the bag. These scales use varying vibratory speeds to move difficult materials or to provide precise accurate measurements of granular material. Materials that do not flow easily or have irregular shapes such as ground coffee, light density grass seed or granola usually incorporate vibration in open mouth bag fillers.
Belt Feeder scales are used for packaging material that tends to stick to itself during the fill process. The belt feeder uses adjustable product height and speed settings to deliver the product into the open mouth bag accurately. Sweet molasses based cattle feed, mulch and topsoil are bagged on belt feeder units.
Auger packers feature a screw or auger that moves the product into the bag. Powders to granular material can be packaged with an auger packer. Open mouth bag filling using auger packers are used for difficult to feed materials such as starches and flours or easily fluidized powders.
The Taylor Products' Model TOMP Automatic Open Mouth Bag Placer will place kraft bags on the spout of an electronic bagging scale at a rate of up to 12 bags per minute.
The OM2 Series of open mouth baggers use Taylor's patented self dampening beam scale for reliability and accuracy. The flow control regulates the speed of material going through the scale and can be adjusted for light or heavy density material.
Taylor Products' TE100 open mouth bagging scale is loaded with standard features that are optional on many other brands of scales.
The TE10 Series are electronic, small net weigh scales designed for weighments of 2 oz. to 12 lb. The TE10 Series is designed with a solid mount net weigh bucket to increase accuracy.
The VG Series bagging scale weighs products with bulky or erratic flow characteristics with extreme accuracy. The vibratory feeder moves the difficult material from the hopper to the bag.
The GN net weigh scale is designed for packaging free-flowing, granular products into open mouth bags. The net weigh bucket continuously refills with product and is discharged by the operator's signal.
The VN Series has been designed for packaging difficult to feed or fragile materials into open mouth bags. A vibratory feeding pan with a two-speed fill rate moves a large volume of material quickly and gently.
The Taylor Model APO is designed to fill open mouth bags with powder products that are aerated, bind, cake, or bridge easily.
Model APO Dual
The Taylor Model APO Dual is designed with variable speed augers perfecting the art of 'bulk and dribble' feeding.
The Taylor Model IPO was designed for efficient packaging of heavy, dense, difficult-to-feed powders, and fine granular mixture into open mouth bags.
The Taylor VB Series is engineered to accurately fill boxes, small drums, pails and buckets. Features include 15 cubic foot product hopper, adjustable two speed vibratory feeder and roller scale base with electronic load cell.
The Incline Auger Packer electronic bagging scale weighs material with extreme accuracy. The incline screw moves the material from the hopper to the bag. Filling bags from 40 to 120 pounds.
The RT7000 is Taylor Products' premium, net-weigh packaging machine with precise weighments, and high production capacity. A gravity-fed, primary fill cycle is complimented by a vibratory-fed, secondary cycle to provide the fastest possible rates and the most precise accuracy when packaging free-flowing products like grains, pet foods or granular products.
The THP5500 Automatic Bagging System offers the best value in integrated bagging machinery today. This system is ideal for handling free-flowing materials such as pet food, sugar, seed, fertilizer, rice, cat litter and plastic pellets.
Taylor Products’ basic weigh controller provides excellent packaging accuracy and is operator friendly. Program changes for different bag weights or machine functions are intuitive and simple from the basic keypad.
The T3000’s cutting edge technology will provide ease of use when configuring, networking, calibrating, and storing information.