Abstract: An apparatus for forming a paperboard receptacle includes male and female dies which draw the receptacle from a blank. The receptacle is moisturized during the drawing process to plasticize and lubricate the paperboard by injecting steam into one of the dies.

Abstract: Method for forming a paperboard receptacle includes male and female dies which draw the receptacle from a blank. The receptacle is moisturized during the drawing process to plasticize and lubricate the paperboard by injecting steam into one of the dies.

Abstract: A bag for containing a flowable product comprises a plurality of panels hingedly coupled along fold lines, an opening at one end of the bag, and a flap hingedly coupled to one panel along a fold line for overlapping an opposite panel and closing the opening. An adhesive layer extends across the entire width of the flap to seal the flap to the opposite panel. The adhesive layer seal has a reduced bonding strength adjacent one end of the flap to facilitate opening of the flap at the reduced bond strength section. The reduced bonding strength is provided by an adhesive coating comprising kaolin clay. This arrangement is particularly useful in heavy weight bags which are sealed by a hot melt adhesive.

Abstract: A bag for containing a flowable product comprises a plurality of panels hingedly coupled along fold lines, an opening at one end of the bag, and a flap hingedly coupled to one panel along a fold line for overlapping an opposite panel and closing the opening. An adhesive layer extends across the entire width of the flap to seal the flap to the opposite panel. The adhesive layer seal has a reduced bonding strength adjacent one end of the flap to facilitate opening of the flap at the reduced bond strength section. The flap after being sealed to the opposite panel, is reversely bent 180.degree. along with the sealed opposite panel about a lower fold line and portions of the fold extending inwardly from opposed distal ends of the bag are either adhesively tacked or stapled to the one panel to form a finger grip handle therebetween for carrying the bag and its contents.

Abstract: A bag for containing a flowable product comprises a plurality of panels hingedly coupled along fold lines, an opening at one end of the bag, and a flap hingedly coupled to one panel along a fold line for overlapping an opposite panel and closing the opening. An adhesive layer extends across the entire width of the flap to seal the flap to the opposite panel which is provided with an adhesive coating comprising kaolin clay, to facilitate opening of the bag, but which provides sufficient bond strength during shipment and handling to preclude inadvertent opening of the bag.

Abstract: An elongated, plastic resealing clip is provided for a bag containing a flowable product and comprising a plurality of panels hingedly coupled along fold lines, an opening at one end of the bag, and a flap hingedly coupled to one panel along a fold line for overlapping an opposite panel and closing the opening. The clip is U-shaped in transverse cross section with a bight for engaging the flap fold line and depending legs for pressing the flap against the opposite panel. An adhesive layer extends across the entire width of the flap to seal the flap to the opposite panel. The adhesive layer seal can have a reduced bonding strength adjacent one end of the flap to facilitate opening of the flap at the reduced bond strength section. The reduced bonding strength is provided by an adhesive coating comprising kaolin clay. This arrangement is particularly useful in heavy weight bags which are sealed by a hot melt adhesive.

Abstract: A resealable bag for containing a flowable product comprises a plurality of panels hingedly coupled along fold lines, an opening at one end of the bag, a flap hingedly coupled to one panel along a fold line for overlapping an opposite panel and closing the opening, and a strip of adhesive tape for opening and resealing the flap. An adhesive layer extends across the entire width of the flap to seal the flap to the opposite panel. The adhesive layer seal can have a reduced bonding strength adjacent one end of the flap to facilitate opening of the flap at the reduced bond strength section. The reduced bonding strength is provided by an abhesive coating comprising kaolin clay. This arrangement is particularly useful in heavy weight bags which are sealed by a hot melt adhesive.

Abstract: Automotive exhaust gases, and especially the exhaust gases which have been further oxidized by a treatment in a catalytic converter, are treated by passing them through a filter containing paper coated with a calcium carbonate coating. The paper is desirably coated on both sides with heavy coatings and wound into a roll with spacers extending through the roll to permit the gases to pass therethrough. The calcium carbonate desirably constitutes at least 85% of the weight of pigments and fillers in the coating and the proportion of binder does not exceed 20% of the total weight of pigments and fillers. The acidic gases in the exhaust, and particularly the oxides of sulfur, react with the finely divided particles of calcium carbonate in the coating to form an ash which flakes off from the lower face of the roll while the gases pass upwardly through the roll.