Abstract: A blending system for dispersing continuously in a fixed proportion of a dispersed first solids flow into a second bulk solids flow thereby forming a homogeneous solids flow. The system includes an upright vessel having an outlet for the homogeneous solids at its lower extremity. One or more blending stages are disposed within the vessel above the outlet. The blending stage has an inverted Vee element with inclined side surfaces mounted centrally within the vessel and with its apex pointed upwardly. A first inlet for the first solids resides vertically above the apex of the element. A second inlet for the second solids has a discharge opening about the first inlet and displaced laterally from the apex of the element. The dispersed first solids are supplied at a certain flow rate through the first inlet to flow about the apex of the element and downwardly along its side surfaces.

Abstract: The invention provides a dynamic system for heat-sealing an all-plastic material in a continuous process at high speed. The invention includes an all-plastic heat-sealable container material comprising a multiple-layer composite, in sheet form, including a core layer and at least one outer layer on one side thereof. The layers preferably comprise thermoplastic material, the core layer material having a higher softening point than the outer layer material. The composite sheet is conveyed through a converting, side-seaming or other apparatus at high speed, the system being tuned to dynamically heat the outer layers to a molten state for heat sealing, while the core does not soften but remains undistorted. The core is thus thermally insensitive to heat at speeds used in side-seaming the composite, and as such it supports and maintains the structure of the sealing outer layers on its exterior while they are in a molten condition.

Abstract: The invention provides a dynamic system for heat-sealing an all-plastic material in a continuous process at high speed. The invention includes an all-plastic heat-sealable container material comprising a multiple-layer composite, in sheet form, including a core layer and at least one outer layer on one side thereof. The layers preferably comprise thermoplastic material, the core layer material having a higher softening point than the outer layer material. The composite sheet is conveyed through a converting, side-seaming or other apparatus at high speed, the system being tuned to dynamically heat the outer layers to a molten state for heat sealing, while the core does not soften but remains undistorted. The core is thus thermally insensitive to heat at speeds used in side-seaming the composite, and as such it supports and maintains the structure of the sealing outer layers on its exterior while they are in a molten condition.