While equipment that fills bags with product can be very accurate (i.e. +/- 0.5%), they are not weight certifiable for products for sale. This is because: (1) the product is moving while it is being weighed and (2) the bag filling equipment has moving parts that can wear or be adjusted. The bag filler is not a fixed, stable platform... Read more
Category: Bag Fillers
Bagging Scale-What Size Supply Hopper Do I Need?
The supply hopper sits on top of your bagging scale. The size of the supply hopper determines how many bags you can fill before you have to replenish it. Incline feed conveyors are often used to fill your supply hopper from a blender, dryer, super sack or silo. Depending on your product, feed conveyors may be: cleated belt, auger, vacuum,... Read more
Bagging Scales – How to Choose A Spout
To fill a bag, bagging scales need a spout that fits inside the bag. The spout is determined by the application, the size of the bag and the material of the bag. Types: There are 2 basic types of spouts for open mouth bags: non-clamp and clamp. Non-Clamping Spouts The non-clamp spout is a simple tapered funnel where the bag... Read more
Bagging Scales – Part 4 Bag Clamps
Both gross weigh and net weigh bagging scales that fill open mouth bags have a spout where the product is discharged into a bag. To hold the bag on the spout while it is being filling, bagging scales offer different types of bag clamping assembles. There are two typical types of bag clamping assemblies: clam shell and center grip. CLAM... Read more
Bagging Scales – Part 3 Bagger Feeders
The choice of a bagging scale feeder is dependent on your product’s flow characteristics. The types of scale feeders include: gravity, vibratory, belt, auger, impeller, and air packer. Gravity Feeders: Gravity baggers are available as gross or net weigh baggers and utilize gravity to fill bags with free flowing, high density materials like flakes, granules or pellets where the product... Read more
Bagging Scales-Part 2 Mechanical vs Digital
Bag filling scales are available with a mechanical weighing mechanism or a digital weighing mechanism. Mechanical Bagging Scales Mechanical scales have a counter balance weight system. Certified counter weights (i.e. 1, 2, or 5 lb.) are hung on the scale. A smaller weight on a slide bar (much like the old doctor’s scale) or a threaded rod is used for... Read more
Bagging Scales – Part 1 Gross Weigh vs Net Weigh
There are two types of bagging scales based on how the product is weighed: gross weigh scales and net weigh scales. Gross Weigh Bagging Scales With gross weigh scales, the bag is hung on the scale spout and the bag weight is zeroed out. As the product is added to the bag, the bag is weighed. When the desired weight... Read more