Valve Bag Filling
Many industries use valve bags to distribute their products, which are filled by commercial valve bag packers. The function of the valve bag filler is to accurately meter out the required amount of product into the bag in an efficient manner. Valve bag packers are used in a variety of industries that package dry, bulk solid powders and granular products. Some common products are cement, grout, fertilizer, flour, grains, refractory mixes and sugar. These valve bag filling machines use the open sleeve in the bag to introduce the product. The sleeve functions as a check valve to keep the product from sifting out of the bag once it is filled.
The process of filling valve bags begins with the placement of an empty bag on the fill spout of the valve bag packer. The fill spout of the packer is suspended from an electronic load cell that accurately weighs the amount of product in the bag. The bag can be placed on the fill spout by hand or in automated systems by a robotic valve bag placer. Once the bag is completely filled, the material contained in the bag pushes the sleeve or valve shut while the bag kicker removes the bag from the filler. The fill spout on the valve bag fillers can be designed with air reliefs which work in conjunction with bag perforations to allow displaced air to escape the bag during the fill cycle.
Valve bag packers can use a variety of methods to transfer the product from the bulk bin to the valve bag.
Pneumatic or air packers utilize air pressure to move the product into the bag. These valve bag fillers use a regenerative blower or other air source to pressurize a chamber full of product with the only air escape though the spout. The product is deposited into the valve bag as the air pressure seeks the path of least resistance.
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. Valve bag filling using auger packers are used for difficult to feed materials such as starches and flours.
Impeller Packers use an impeller or slinger to “sling” the product through the fill spout to the bag. Dense, fine mesh materials such as grout are often packaged on valve bag fillers using impellers.
Valve bag packers when used with a properly sized bag, create solid rectangular shaped filled bags that are easy to stack and have minimal product leakage. Some bags that require a positive seal can be hermetically sealed using ultrasonic sealing methods. This procedure creates a seal using sound waves instead of heat to fuse the valve together. This ultrasonic sealing can be performed at the spout, thus minimizing dusting of the process. The valve bag fillers typically can fill bags in a weight range of 20 lbs to 100 lbs.
The TRV1000 offers the latest in robotic technology through Taylor Product's unique relationship with FANUC Robotics. The placer is capable of placing valve bags on multiple machines, being mounted in multiple positions, and customizable to your specific application.
The TRU Seal ultrasonic valve bag sealer converts high frequency mechanical sound waves on a thermoplastic material into frictional heat creating a positive seal on applicable valve bags.
The Taylor GW Series Auger Packer is an economical choice for filling valve bags with granular products or coarse powders. A mechanical beam scale is incorporated into the filler and shuts the flow of product off when the weight is reached.
Taylor Products' Model A air packer is made for packaging fluidizable powders into valve bags. The self-contained pressure blower package and digital scale control make this the ideal machine for applications requiring a balance of speed and accuracy.
Taylor's Model C air packer is designed for packaging coarse powders and granular material into valve bags. These pneumatic packers utilize a self-contained blower and Taylor's patented reverse flow hopper design to provide accurate weighments at high speeds.
The Taylor Model APV is designed to package products that are aerated, bind, cake, or bridge easily into valve bags. The standard agitator keeps material moving to the feed auger. The variable speed auger option utilizes Taylor's "bulk and dribble" technology to ensure a fast and accurate weight measurement.
The Taylor Model IPV is designed for packaging heavy, dense, difficult-to-feed powders, and fine granular mixtures in valve bags. Material leakage is minimized by the split felt shaft seals on the impeller shaft. Product is fed to the impeller by integrated dual feed screws.
The T3000’s cutting edge technology will provide ease of use when configuring, networking, calibrating, and storing information.
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.