Abstract: An apparatus and method for cooling a molten plastic film tube exiting the outlet of an extrusion die is disclosed. The apparatus includes an inlet passage adapted to direct cooling air through the extrusion die to the interior of the plastic film tube. The apparatus includes at least one air dispensing device coupled to the inlet passage. The air dispensing device is configured to receive the cooling air and to direct a flow of the cooling air out of the air dispensing device in an approximately circumferential or tangential direction. The circumferential or tangential flow of the inlet air inside the plastic film tube cools the molten tube while reducing impact on the molten tube.

Abstract: An increased crush-resistant core for a geomembrane liner roll includes a tube-shaped exterior section. The exterior section has a selected length and inner and outer diameters defining a channel. The core includes at least two tube-shaped interior sections. Each interior section is installed at a selected location in the channel. The exterior section can be made from paper, card-board or fiber. The interior sections are made from plastic or other suitable material.

Abstract: An apparatus for dispensing garbage bags is described herein. The apparatus includes one or more sides, a bottom, connected to the sides, and a top, connected to the sides. The top includes a slit flap and one or more hole flaps. The slit flap defines a slit. Each hole flap defines a hole and overlaps the slit flap so that the hole is centered on the slit and garbage bags are dispensed through the slit and the hole when the top is closed. The garbage bags may be dispensed, one at a time, from the center of a vertical, upright roll of garbage bags.

Abstract: A refuse bag supporting device comprises a refuse bag supporting frame and a plurality of legs which are both pivotal relative to the frame and retractable to facilitate supporting refuse bags either vertically or horizontally and to facilitate convenient storage of the refuse bag supporting device.

Abstract: A process for assembling wave-cut trash bags for overlapping dispensing includes the steps of providing a flattened blown-film polymeric tube; providing sets of closely spaced, parallel seals extending across the entire width of the flattened blown-film polymeric tube at periodic intervals there along; providing a transversely extending line of perforations between the seals comprising each set of closely spaced, parallel seals; and providing a wave shaped line of perforations extending transversely across the entire width of the flattened blown-film polymeric tube at a location equidistance between adjacent closely spaced, parallel sets of seals. The flattened blown-film polymeric tube is separated along each transversely extending line of perforations and along each wave shaped line of perforations after which the leading end of each following trash bag is positioned in an overlapping relationship with the trailing end of the preceding trash bag to facilitate overlapping dispensing.

Abstract: In a packaging system for coiled goods, a length of flexible material is wound into a coil. A hole is extended diametrically through the coil and a rod is extended through the hole. Fasteners are secured to the opposite end of the rod to secure the flexible material in the coiled configuration.

Abstract: In a packaging system for coiled goods, a length of flexible material is wound into a coil. A hole is extended diametrically through the coil and a rod is extended through the hole. Fasteners are secured to the opposite end of the rod to secure the flexible material in the coiled configuration.

Abstract: In a packaging system for coiled goods, a length of flexible material is wound into a coil. A hole is extended diametrically through the coil and a rod is extended through the hole. Fasteners are secured to the opposite end of the rod to secure the flexible material in the coiled configuration.

Abstract: A protective covering for a lumber stack is constructed by providing an appropriately sized sheet of heavy duty heat shrinkable plastic material, folding the side edges of the plastic sheeting material inwardly along spaced apart longitudinally extending lines to form top and bottom layers and joining the ends of the top and bottom layers to define a top layer which is imperforate throughout its entire length and width and a bottom layer which is imperforate throughout its entire length and width except for an opening extending the longitudinal center line of the bottom wall from end to the other. A lumber stack is received through the opening in the bottom wall thereby forming initially upwardly extending rectangularly shaped panels which are folded downwardly and secured to the ends of the lumber stack. The portions of the plastic sheeting extending adjacent the ends and the corners of the lumber stack are then heated to shrink the plastic sheeting into secure engagement with the lumber stack.

Abstract: A geomembrane comprising a unitary structure fabricated by co-extrusion including a center core, a thermoplastic adhesive layer secured on one side of the center core, and a textured layer secured on the opposite side of the center core. The geomembrane is utilized in the manufacture of a liner for earthen constructions by employing the thermoplastic layer of the geomembrane to secure the geomembrane to a geosynthetic clay liner.

Abstract: A protective covering for a lumber stack is constructed by providing an appropriately sized sheet of heavy duty heat shrinkable plastic material, folding the side edges of the plastic sheeting material inwardly along spaced apart longitudinally extending lines to form top and bottom layers and joining the ends of the top and bottom layers to define a top layer which is imperforate throughout its entire length and width and a bottom layer which is imperforate throughout its entire length and width except for an opening extending the longitudinal center line of the bottom wall from end to the other. A lumber stack is received through the opening in the bottom wall thereby forming initially upwardly extending rectangularly shaped panels which are folded downwardly and secured to the ends of the lumber stack. The portions of the plastic sheeting extending adjacent the ends and the corners of the lumber stack are then heated to shrink the plastic sheeting into secure engagement with the lumber stack.

Abstract: A protective covering for a lumber stack is constructed by providing an appropriately sized sheet of heavy duty heat shrinkable plastic material, folding the side edges of the plastic sheeting material inwardly along spaced apart longitudinally extending lines to form top and bottom layers and joining the ends of the top and bottom layer to define a top layer which is imperforate throughout its entire length and width and a bottom layer which is imperforate throughout its entire length and width except for an opening extending along the longitudinal center line of the bottom wall from one end to the other. A lumber stack is received through the opening in the bottom wall thereby forming initially outwardly extending triangularly shaped panels which are folded downwardly and secured to the ends of the lumber stack. The portions of the plastic sheeting extending adjacent the ends and the corners of the lumber stack are then heated to shrink the plastic sheeting into secure engagement with the lumber stack.

Abstract: A protective covering for a lumber stack is constructed by providing an appropriately sized sheet of heavy duty heat shrinkable plastic material, folding the side edges of the plastic sheeting material inwardly along spaced apart longitudinally extending lines to form top and bottom layers and joining the ends of the top and bottom layers to define a top layer which is imperforate throughout its entire length and width and a bottom layer which is imperforate throughout its entire length and width except for a lumber stack receiving slit extending along the longitudinal center line of the bottom wall from end to the other.

Abstract: A protective covering for a lumber stack is constructed by providing an appropriately sized sheet of heavy duty heat shrinkable plastic material, folding the side edges of the plastic sheeting material inwardly along spaced apart longitudinally extending lines to form top and bottom layers and joining the ends of the top and bottom layers to define a top layer which is imperforate throughout its entire length and width and a bottom layer which is imperforate throughout its entire length and width except for an opening extending the longitudinal center line of the bottom wall from end to the other. A lumber stack is received through the opening in the bottom wall thereby forming initially upwardly extending rectangularly shaped panels which are folded downwardly and secured to the ends of the lumber stack. The portions of the plastic sheeting extending adjacent the ends and the corners of the lumber stack are then heated to shrink the plastic sheeting into secure engagement with the lumber stack.

Abstract: Liners are typically formed by several sheets of liner material that are welded together along an edge. Securing a liner in place could be vastly improved if a cable could be fixed to the liner. Therefore, several methods of securing a cable to the liner have been disclosed. In one embodiment, a passage is placed into a hot shoe wedge welder used in welding the liner sheets together. A cable is fed through the passage as thus is captured between the two portions of adjacent sheets being welded together. The cable can be unsheathed or slidable within a sheath. In the later case, the sheath would be fixed between the welded sheets, but the cable would still be slidable within the sheath. A sheathed cable could also be attached to a liner by melting a portion of the sheath and a portion of the liner and then pressing the two together. A modified hot shoe could be used in that process as well. Finally, a cable can be placed onto a liner and a plastic bead applied over the cable, attaching it to the liner.

Abstract: The handle has an insert portion having a plurality of radially extending fins and a grip surface. The handle is inserted into a hollow core. The fins provide a fit that allows the core to rotate relative to the handle. The fins can deform when subjected to such rotation. The grip is positioned to allow the user to squeeze the handle against the core to slow or stop said rotation.

Abstract: Liners are typically formed by several sheets of liner material that are welded together along an edge. Securing a liner in place could be vastly improved if a cable could be fixed to the liner. Therefore, several methods of securing a cable to the liner have been disclosed. In one embodiment, a passage is placed into a hot shoe wedge welder used in welding the liner sheets together. A cable is fed through the passage as thus is captured between the two portions of adjacent sheets being welded together. The cable can be unsheathed or slidable within a sheath. In the later case, the sheath would be fixid between the welded sheets, but the cable would still be slidable within the sheath. A sheathed cable could also be attached to a liner by melting a portion of the sheath and a portion of the liner and then pressing the two together. A modified hot shoe could be used in that process as well. Finally, a cable can be placed onto a liner and a plastic bead applied over the cable, attaching it to the liner.

Abstract: A co-extrusion method for making a blown-film textured liner having a textured surface to provide improved soil gripping properties and smooth untextured edges for improving the integrity of the joint between adjacent liner sheets.

Abstract: A blown-film textured liner having a textured surface to provide improved soil gripping properties and smooth untextured edges for improving the integrity of the joint between adjacent liner sheets. The textured liner can be used to protect soil from waste products.