Stone Container Corporation

Don G Giles

Robert G Kelley

Christopher S Wadium

Michael R Avila

Michael D Abar

Thomas L Myers

Mark D Belser

Robert F Kendall

John P Fuller

Jerry L Aldridge

A valve bag is provided having a self-closing feature to preclude sifting losses after filling, but before the bag is fully sealed, while enabling the facilitated final secure closure of the bag.

Self-closing sealable valve bag

A valved bag is provided, having first and second end portions, and at least one in-folded flap member and at least one outer flap member affixed to at least one of the first and second end portions. A cover member is positioned and affixed to the in-folded flap member and outer flap member, prior to final closure of same, for preventing the undesired escape of material from within the bag, subsequent to closure of the ends and filling of the bag.

Sift proof valve bag

A method and apparatus for sealing a valved bag transported by a conveyor. The valved bag has a body with a longitudinal axis, a center of gravity, and a sealable valve. At least a portion of the sealable valve protrudes from the body in a substantially perpendicular orientation relative to the longitudinal access. The apparatus includes a conveyor for transporting the valved bag in a direction of travel substantially parallel to its longitudinal access. A stop member stops the transportation of the valved bag when the sealable valve is aligned with a sealing area. A ram member positions the valved bag to dispose at least a portion of the sealable valve into the sealing area. An ultrasonic horn and anvil engage and seal the sealable valve. The stop member is removed from the path of the sealed bag, allowing it to resume transportation along the conveyor.

Apparatus and method for sealing valved bags transported by a conveyor

A valve bag is provided having a self-closing feature, to preclude sifting losses after filling, but before the bag is fully sealed, while enabling the facilitated final secure closure of the bag.

A multi-station filling apparatus and process for filling bulk containers while simultaneously enabling the deployment and staging of at least one empty container while at least one other container is being filled. The apparatus includes a container filling station operably positioned adjacent a substantially elevated filling chute, a container deployment station, a rotatable carriage and an automatic apparatus controller. The container deployment station is spaced apart from the container filling station so that an operator can attach an empty container thereat either prior to, or during, filling of another container at the container filling station--while avoiding physical exposure to any mechanisms, such as conveyors, associated with the container filling station. The rotatable carriage, which automatically rotates an empty container from the container deployment station toward and into the empty container filling station, includes an outer frame member and displaceable inner frame members. The inner frame members are displaceable from the outer frame members at the container filling station toward operable cooperation with the elevated filling chute, as well as for transferring of the weight of the inner frame member and attached container onto an elevated weight scale mechanism.

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Salt Lake City, UT, United States of America

Don G Giles