Abstract: A therapeutic mask for application to a face of a patient suffering from facial wounds includes a relatively elastic substrate having a plurality of open surfaces defined therein of a predetermined size and spatially positioned with respect to one another to accommodate the patient's eyes, nose and mouth, a hydrogel substance having a plurality of open surfaces defined therein of a predetermined size and spatially positioned with respect to one another to accommodate the patient's eyes, nose and mouth and complimentarily connected to the elastic substrate such that the respective eyes, nose and mouth open surfaces align. The therapeutic mask further includes retaining straps connectable to the elastic substrate and of a size and configuration to extend about the head of the patient for supporting the therapeutic mask in a relatively fixed position on the patient's face.

Abstract: Paper or paperboard is made by forming an aqueous cellulosic suspension, passing the cellulosic suspension through one or more shear stages, draining the suspension to form a sheet and drying the sheet, wherein the cellulosic suspension that is drained includes organic polymeric material and inorganic material, wherein said organic polymeric material is a flocculant having a molecular weight above 500,000 and is added to the suspension before one of the said shear stages and wherein said inorganic material comprises bentonite which added to the suspension after that shear stage, characterised in that the organic polymeric material comprises an anionic or non-ionic polymer.

Abstract: The fines retention or drainage properties of mechanical pulps in the paper making process are improved by including in the thin stock, not after the last point of high shear, particles of a water-dispersible colloid siliceous material such as a bentonite clay in intimate association with a low molecular weight water soluble high anionic charge density polymer, such as polyacrylic acid having a molecular weight below 50,000 and a charge density of at least 4 m eq/g and further including in the thin stock, after the last point of high shear, a non-ionic high molecular weight polyelectrolyte such as polyacrylamide having a molecular weight of at least 100,000.