Open-mouth bags’ wide top ends are suited for a variety of different products with widely varying mesh sizes, bulk densities and flow characteristics and filled by Gross Weigh or Net Weigh scales. Since open-mouth bags are typically constructed of kraft paper, poly woven mesh, plastic film or burlap, these bags require a sewing head, heat sealer or pinch bag closer after filling.
Gravity scale: uses the products’ bulk density and flow characteristics to fill the open-mouth bag via cutoff gates that close when the bag reaches the desired weight. Free-flowing granular products such as grains, fertilizer, salt, and small pellets are packaged on these scales.
Vibratory feeder scale: uses side-to-side movement of the vibratory tray to transfer the product into the bag. Varying vibratory speeds move difficult materials or provide precise measurements of granular material. Materials that do not flow easily or have irregular shapes, such as ground coffee, and light density, like grass seed or granola, usually incorporate vibration in open-mouth bag fillers.
Belt feeder scale: Uses adjustable product height and speed settings to deliver product accurately into the open-mouth bag. These scales are suited to packaging material that tends to stick to itself during the filling process, like sweet molasses-based cattle feed, mulch and topsoil.
Auger packer: uses a screw or auger to move the product into the bag. An auger packer packages powders to granular material and can be used for difficult-to-feed materials such as starches and flours or easily fluidized powders.
Magnum Systems, provides a variety of packaging line accessories, from bag sealers and sewers, to conveying, flattening, check weighing and palletizing equipment. Some people sell components, but we provide complete packaging solutions from rail- to -pallet and everywhere in between.
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