Abstract: An elasticized waist diaper in which a layer of elastic material is positioned in an opening in the waist area of a diaper. The elastic layer is located such that it forms a portion of the waist edge of the diaper. The elastic layer may be formed from the same piece of elastic material as is used for the diaper leg elastic.

Abstract: In disposable diapers which are equipped with tape closure means and have an impermeable thin film backing, the improvement in which selected areas of the thin film, which areas serve as tape securement zones when the diapers are in use, have uniformly adhered to that side of the film facing the diaper interior a layer of hot melt adhesive to provide a composite structure in the selected areas having a high resistance to tearing when tensile loads are applied. The hot melt adhesive layer has a lower modulus of elasticity than the film and is applied in heat-softened condition to obtain strong, uniform adherence to the film. In a method for applying the adhesive layer, a wide band of adhesive of predetermined thickness is extruded in heat-softened condition into direct contact with selected areas of a moving web of the film. The adhesive is one which has a Ring & Ball softening point lower than the heat distortion temperature of the film and during application will not thermally degrade or distort the film.

Abstract: Apparatus for cleaning a drum type vacuum filter having a rotating drum and a porous belt wrapped around and rotating with the drum. Liquid in a slurry carried by the belt is withdrawn through the belt and through grids carried on the drum and openings in the drum surface by a vacuum within the drum. Small particles of solids in the slurry are also drawn through the belt and lodge in and clog the grids and drum surface openings. The cleaning apparatus is positioned in a space formed between the belt and the drum by the travel of the belt from the drum and the return of the belt to the drum. The cleaning apparatus has a spray header movable along the length of the drum and carrying a plurality of nozzles facing the drum surface and grids mounted thereon and is connected to a source of high pressure liquid which is sprayed by the nozzles on the drum openings and grids to clean the solids from them.

Abstract: A body support apparatus is disclosed as having alternatingly inflatable and deflatable cells and uninflated resilient body support material positioned between the cells. The cells are inflated by pressurized fluid such as air under the control of a control device utilizing diaphragm means responsive to the pressurized fluid to determine the inflation and deflation time periods and connect and disconnect the pressurized fluid to the cells. During the time period in which the cells are inflated, the support of a body will be provided by the uninflated support material. During the time that the cells are inflated above the support level of the uninflated support material, the cells will support the body.