Abstract: In a particular example, a low drift voltage reference system includes a Zener diode circuit, a voltage reduction circuit, and a proportional-to-absolute temperature (PTAT) circuit. The Zener diode circuit, which is coupled between a first supply terminal (e.g., VDD) and a second supply terminal (e.g., common), provides an input reference voltage level. The voltage reduction circuit provides another reduced version of the input reference voltage level. The PTAT circuit has first and second differential paths to provide an output reference voltage at an output node of the PTAT circuit, and a feedback path to draw feedback current from the output node to control the differential circuit.

Abstract: An ovenable paper container containing an inner liner, an outer liner, and an intermediate or corrugated paper layer positioned between the inner liner and the outer liner. The ovenable paper container can be used to heat and/or cook food and then be used as a serving container without the danger of causing burns.

Abstract: A machine uses a method for producing a cup from an outer shell and inner cup. For this purpose, the machine includes first holding devices that are arranged on a first rotatably housed star- or wheel-like holding device carrier, and second holding devices arranged on a second rotatably housed star- or wheel-like holding device carrier. Further, a first working station arranged at least in the region of the first holding devices for carrying out first working steps and at least one second working station arranged in the region of the second holding devices for carrying out second working steps are provided. Finally, the machine includes a transfer station for transferring a finished outer shell from a first holding device to a second holding device.

Abstract: A method of forming a container from a construct. The method includes obtaining a tool having a cavity, a core, and an articulated section for being moveable within the cavity relative to the cavity and the core. The method further includes placing a construct between the cavity and the core, moving the core relative to the cavity so that the articulated section at least partially initially grips a portion of the construct, and further moving the core into the cavity. The portion of the construct remains gripped by the articulated section in the cavity during the further moving of the core.

Abstract: A tool for forming a container from a construct. The container comprises a bottom wall and at least one sidewall foldably connected to and extending upwardly from the bottom wall to form an interior space of the container. The tool comprises a cavity having at least one peripheral wall for at least partially forming the sidewall of the container. The tool comprises a core operatively associated with the cavity and being operable to move within the cavity to position the at least one sidewall of the container relative to the bottom wall to form the interior space. The tool comprises at least one articulated section movably received in the cavity. The at least one articulated section being for gripping at least a portion of the at least one sidewall of the construct, when the core is moved relative to the cavity to form the interior space of the container.

Abstract: The invention relates to a machine (1) and a method for producing a cup (100) from an outer shell (101) and inner cup (102). For this purpose, the machine (1) comprises a plurality of first holding devices (2) that are arranged on a first rotatably housed star- or wheel-like holding device carrier (3), and a plurality of second holding devices (4), arranged on a second rotatably housed star- or wheel-like holding device carrier (5). Further, a first working station arranged at least in the region of the first holding devices (2) for carrying out working steps (A1 . . . A4) and at least one second working station arranged in the region of the second holding devices (4) for carrying out working steps (B1 . . . B5) are provided. Finally, the machine (1) comprises a transfer station (6) for transferring (A4, B1) a finished outer shell (101) from a first holding device (2) to a second holding device (4).

Abstract: A cup made of paper material having a fillable interior is provided. The cup is formed by a conical sleeve and a bottom. The bottom is attached to the sleeve at the lower end of the interior with a bottom skirt in an essentially liquid-tight way. The sleeve and/or the bottom in the area of the bottom skirt and/or the bottom skirt itself includes, at least in one area along the periphery, an outwardly projecting widening. A lower edge of the widening forms a standing surface for the cup. The widening can form a structure for holding another cup of the same type, which structure can act together with a similar cup during stacking. The cup can include a heat-insulting outer sleeve.

Abstract: A device is provided for unrolling a rim of a container, such as a paper cup. The device includes a first structure or section with an inside surface, a first end and a second end, including a pair of spaced apart cutting blades projecting from the inside surface. Attached or integrated proximate the second end of the first structure is a second structure or section with a first end and a second end. The cutting blades are accessible via a juncture at the first end of the first structure and the first end of the second structure. Accordingly, the device may be used to cut and unroll a portion of a rim of a container such as a paper cup.

Abstract: A tray (100) or container (478) which may be hermetically sealed having a flange (116), rim (124), handle (258), rib, bottom surface (500), sidewall (114), or other portion that is encapsulated by or formed from injection-molded material.

Abstract: A method and equipment for molding an article produced from paperboard or cardboard. Moulding is carried out by a molding tool that mechanically works the board; and to improve its moldability, momentary irradiation on the microwave frequency is exerted on the board. The method applies to the manufacture of packages and disposable containers made of paperboard or cardboard; for example, to the forming of a rolled-up or folded rim around a drinking cup, mug or a container, the forming of a stiffening crease or projection on a paperboard container, or to press molding of paperboard containers or plates.

Abstract: 2.1. The invention relates to a paper cup with a cup sleeve and a bottom connected in a liquid-tight manner to the cup sleeve. 2.2. In accordance with the invention, the cup sleeve is arranged between the bottom and an end opposite the bottom at least in some sections at an angle greater than or equal to 10°, in particular between 10° and 15°, relative to a central longitudinal axis of the paper cup. 2.3. Use for example for paper cups of plastic-coated paper material.

Abstract: A compression or fold completion device used to uniformly compress a folded edge of a workpiece, such as a box blank, in order to allow the blank to more easily be utilized in subsequent packaging operations. The device includes a pressure roller mounted to a rotatable adjustment member. The rotational axis of the pressure roller is offset from the rotational axis of the adjustment member. The adjustment member is in turn connected to an actuating assembly, which may include an arm secured at one end to the adjustment member and at the other end to an extendible and retractable actuator, in order to enable the actuator to rotate the adjustment member and selectively position the pressure roller in engagement with a folded edge of a workpiece passing beneath the pressure roller.

Abstract: A bio-degradable cup includes a foam cup and a paper cup which is securely received in the foam cup. The paper cup includes a bio-degradable film coated to an inside thereof. The paper cup is formed by cutting a paperboard and folded to be the paper cup. The foam cup is made by preparing a foam board made by bio-degradable plastic which is treated by way of super-critical carbon dioxide extrusion, the foam board is cut into pieces and each piece is made to be the foam cup. The foam cup is applied with a heat treatment to obtain a sticky inner surface to which the paper cup is securely connected. A lip is formed around an outer top edge of the foam cup.

Abstract: A disposable servingware container press-formed from paperboard includes (a) a bottom panel; (b) an annular transition portion; and (c) an outer portion extending upwardly and outwardly with respect to the transition portion, the container having an outer surface and an inner surface distal to the outer surface, the inner surface being adapted as a serving surface. The paperboard is infused with a wax composition on one side thereof in an amount of at least 3 lbs of wax per 3000 ft2 ream such that the paperboard is partially saturated with wax and has a wax-enriched layer proximate one side thereof and a layer undersaturated with wax proximate the other side thereof.

Abstract: A carton formed from a unitary blank for storing food within and methods of manufacture of the carton thereform, are disclosed herein. The carton comprises a generally rectangular bottom having a pair of major bottom flaps and a pair of minor bottom flaps that are folded to form a substantially closed bottom, and a pair of major side panels, a pair of minor side panels, and a secondary side panel that are folded perpendicular to the bottom. An opening is defined by the upper ends of the major side panels and the minor side panels opposite the bottom and is generally non-rectangular.

Abstract: An arrangement for rolling the frontal end of a deformable sleeve-shaped container jacket comprises a supporting surface which radially supports the container jacket in the area of its end. A ring-shaped cavity is arranged radially adjacent thereto, which cavity is closed at the bottom and open at the top. The cavity has an essentially semicircular cross-section. The cavity is provided in circumferential direction with a plurality of pocket-shaped recesses in the transitional area between the supporting surface and the bottom, between which recesses rolling ridges, as part of the original cavity surface, remain. The purpose of this design is to effect a reduction in the deformation forces when the frontal end of the container jacket is being rolled.

Abstract: A tool for unfurling a rolled rim of a paperboard cup is disclosed. The tool comprises a rigid elongated member having a front side, a back side, and, preferably, four peripheral edges. One portion of the elongated member is rolled into a semi-spiral hook which is generally spiraled about a hook axis which is orthogonal to—but preferably does not intersect—a longitudinal axis of the elongated member. The hook axis is slightly curved to match a curvature of the rolled rim of the paperboard cup. An aperture is included through the elongated member at a lower end thereof. In use, the tool is grasped by a hand of a user, and the hook is inserted under the rolled rim of the paperboard cup. The tool is then pulled upward away from the cup to unfurl the rolled rim. The tool facilitates the unrolling of the rolled rim of the paperboard cup to reveal any writing or markings previously hidden within the rolled rim.

Abstract: A bottom sealing workstation is provided for a cup forming machine. The bottom sealing workstation has a linear motion assembly, a rotation assembly, a phase change assembly. A first motor is mechanically connected to a linear motion assembly of the bottom sealing workstation to linearly move the linear motion assembly toward a mandrel, a second motor is mechanically connected to a rotation assembly of the bottom sealing workstation to rotate a forming tool in a circle having a radius, and a third motor is mechanically connected to the phase change assembly to adjust the radius of the circle in which the forming tool rotates. Additionally, a controller may be electrically connected to the bottom sealing workstation to send electronic signals to the first and third motors to quantitatively control various assemblies of the bottom sealing workstation.

Abstract: A molding device for molding an inner portion of a paper pipe has a molding head, an annular seat disposed on the molding head, an oil supply tube inserted through the annular seat and inserted in the molding head, a rotating device connected to the oil supply tube, and an oil pipe connected to the rotating device. The molding head has a center hole, a plurality of threaded apertures, an annular guide groove, a plurality of round holes communicating with the annular guide groove, a plurality of expanders, a plurality of expander receiving grooves, and a plurality of shafts. Each expander is inserted in the corresponding expander receiving groove of the molding head. Each shaft which has a recess is inserted through the corresponding round hole of the molding head.

Abstract: A frustoconical matrix and a punch of a complementary shape and coaxial to the former can be brought together to shape an inserted sheet of thin paper. The matrix has a cylindrical peripheral surface along which a beading member comprising a cylindrical foil is slidable in a close running fit. A shoulder extends coaxially to the punch to define a pit having a cylindrical internal wall having a diameter smaller than the outside diameter of the beading member. Heating means are controllable to heat the shoulder to a temperature such that the pit is expanded to a diameter of close running fit between its internal wall and the beading member.

Abstract: A container manufacturing method and device. The container manufacturing method includes steps of mixing, board-making, molding, guiding/crimping and demolding. Lower protruding guide bodies are arranged along the circumference of the mold cavity of the lower mold seat of the container manufacturing device at intervals. Upper protruding guide bodies are arranged on the press board and aimed at the intervals between the adjacent lower guide bodies. In the step of guiding/crimping, when the press board is pressed down by an oil pressure cylinder, the interlaced upper and lower guide bodies clamp and press the circumference of the board body to form regular crimps thereon. Therefore, when the upper mold block presses the board body into the mold cavity, the material can be evenly distributed and flowed so that the wall of the molded container can have uniform thickness.

Abstract: A method is provided of calculating a development plan of a paper container of deep bottom integrally formed from a single-sheet blank. An annular rule line 6 constituting a regular polygonal shape is formed at the center of a single-sheet blank to constitute the bottom face of the paper container, and divided faces 5 to constitute the outside of the peripheral face of the paper container are formed on the outside of the annular rule line 6. The blank portions between the divided faces 5 constitute inner pleated faces 4. Each of the blank portions is folded downwards along the rule line 7 and folded upwards along the line 9, so that the blank portion is folded to define two triangles 8 with an angle &phgr; and the overlapping portions thus obtained constitute an inner wall face 4.

Abstract: A container manufacturing method and device. The container manufacturing method includes steps of mixing, board-making, molding, guiding/crimping and demolding. Lower protruding guide bodies are arranged along the circumference of the mold cavity of the lower mold seat of the container manufacturing device at intervals. Upper protruding guide bodies are arranged on the press board and aimed at the intervals between the adjacent lower guide bodies. In the step of guiding/crimping, when the press board is pressed down by an oil pressure cylinder, the interlaced upper and lower guide bodies clamp and press the circumference of the board body to form regular crimps thereon. Therefore, when the upper mold block presses the board body into the mold cavity, the material can be evenly distributed and flowed so that the wall of the molded container can have uniform thickness.

Abstract: A container-forming apparatus comprising a movable mandrel supporting the casing and the end member, which closes the open end of the casing and an end sealing station comprising a clamping means in order to press together the edge of the casing, said casing being transferred to the end sealing station by the mandrel, and the edge of the end member, said edge being turned longitudinally towards the casing. The clamping means comprises a piston moving back and forth in the longitudinal direction of the casing, said piston having pushing surfaces approaching the sliding axle in the pushing direction causing the clamping action. The pushing surfaces are the countersurfaces of the clamping members, said clamping members being arranged to turn towards the frame of the clamping means.

Abstract: The lid is formed, on the one hand, of a ring (7) and, on the other hand, of a disk (D). The ring (A) comes from a strip cut parallel to the fibers of a fibrous rigid material. Having formed the ring (A) using a two-stage tool, the disk (D) is pressed on the ring (A) and the skirt (L′) is bonded onto the ring (A). A nesting profile and a catch (3′) in the form of a groove open toward the interior are formed. The lid fits onto a container (R) with a rolled edge (O).

Abstract: A cylindrical body of a fiber drum comprises a roll of a paper material having two opening ends, a curled portion formed by curling the edge of at least one of the two opening ends, and a protective material for covering an outer surface of the curled portion. A method of fabricating a cylindrical body of a fiber drum comprises winding a length of paper sheet in layers, between which layers an adhesive is applied, to form a roll of the paper sheet having two opening ends. Then, a protective material is provided on an opening edge at either of the two opening ends of the roll, and the opening edge at the said either of the two opening ends of the roll is inwardly or outwardly curled together with the protective material before the adhesive is cured between the layers. Thus, formed is a curled portion covered at an outer surface with the protective material.

Abstract: A cylindrical body of a fiber drum comprises a roll of a paper material having two opening ends; and a curled portion formed by inwardly curling the edge of at least one of said two opening ends. A method of fabricating said fiber drum comprises the steps of winding a length of paper sheet in layers, between which an adhesive is applied, to form a roll of the paper sheet having two opening ends, and inwardly curling the edge of at least one of said two opening ends of the roll to form a curled portion before the adhesive is cured between the layers.

Abstract: A cylindrical body of a fiber drum comprises a roll of a paper material having two opening ends, a curled portion formed by curling the edge of at least one of said two opening ends and a protective material for covering outer surface of the curled portion. A method of fabricating a cylindrical body of a fiber drum comprises the steps of winding a length of paper sheet in layers, between which an adhesive is applied, to form a roll of the paper sheet having two opening ends, providing a protective material on an opening edge at either of the two opening ends of the roll, and curling inwardly or outwardly the opening edge at said either of the two opening ends of the roll together with the protective material before the adhesive is cured between the layers to form a curled portion covered at an outer surface with the protective material.

Abstract: A beaded-top twist container is provided with an inner layer and an outer layer, the outer layer being concentric with the inner layer. The inner layer is joined to the outer layer at the top and bottom edges by a bead. At least one rotatable segment is formed from the outer layer by separating the outer layer into at least three segments, the separations being formed by scoring through the outer layer without destroying the integrity of the inner layer. At least one rotatable segment is formed adjacent to a top or bottom bead by forming a separation adjacent the bead between the inner and outer layers.

Abstract: A container having a casing made from composite carton and constituting a container body, which is covered on its inside by a barrier layer and a plastic layer deposited thereon, is produced in such a fashion that the casing is rolled over in an outward direction at one end to form a curled edge and, subsequently, a membrane is sealed onto the upper crown of the curled edge. A bottom is attached to the opposite end after the container is filled. In order to guarantee a sealed closure, the casing is tapered inwardly in a conical manner at its one end along a length which is larger than the circumference of the curled edge in such a manner that the outer diameter in the vicinity of the tapered end is smaller by approximately twice the diameter of the curled edge than the outer diameter of the casing. The end is then rolled over in an outer direction to form a curled edge and is then sealed by the membrane.

Abstract: A process is provided for closing and hermetically sealing a bottom of a container. A cylindrical container body is provided which has an inside heat-sealable surface and an open bottom end. A flange is formed on and around the bottom end of the cylindrical container body which extends outwardly from the container body at a sharp radius of approximately 90 degrees to an outside surface of the container body and which defines a flat circular heat-sealable surface on an outer side of the flange. A generally circular membrane patch having an inside heat-sealable surface is positioned on the flat circular heat-sealable surface of the container body flange covering the open bottom end of the container body. The heat-sealable surfaces of the container body flange and the membrane patch are heat-sealed to each other for hermetically sealing the container bottom end.

Abstract: A method of forming a paper container uses a three ply corrugated material having at least one inner or outer sheet of paper that may be stretched or compressed circumferentially to permit subsequent rolling of the corrugated material about a mandrel. A flattening of the upper and lower edges of the corrugated material permit rolling and seaming operations to be used to assemble the bottom to the cup and to form a lip in the upper edge.

Abstract: An apparatus is provided for forming an outwardly-rolled lip on an open end of a deformable cylindrical container body. The apparatus may include a mandrel having a generally cylindrical-shaped portion for movably supporting at least a portion of an interior surface of the container body. The apparatus further includes a lip-forming die assembly forming a part of the mandrel and having an annular cavity defining an open mouth portion and a closed bottom portion which defines a surface area extending generally radially outwardly of the mandrel outer surface and which is oriented with the open mouth portion generally transverse to an outer periphery of the container body and which faces the open end of the container body around the periphery. An axial forcing member contacts the other end of the container body for axially moving the container body along the outer surface of the mandrel and the container open end into and through the die assembly.

Abstract: A paperboard material 101 is mainly composed of a paperboard having a weight of 200 to 450 g/m.sup.2, a density of 0.65 to 0.82 and a gas permeability of 50 to 200 sec. A first resin layer having liquid-impermeability and thermal resistance is formed entirely on the surface of the paperboard on the inner side of the receptacle, and a second resin layer having permeability to gas and liquid is formed entirely on the back surface of the paperboard. Radial score lines 117 are formed in the portion corresponding to the corners of the paperboard material 101 toward its outer periphery. The score lines 117 do not reach the outer periphery of the paperboard material 101 but terminate at the position at a distance "a" (1 to 3 mm). The score lines 117 are formed by pressing the paperboard with a pressing die from the side constituting the inner side of the receptacle toward the outer side.

Abstract: Spirally-wound circular side walls may be re-formed into non-circular geometries which are then mechanically joined to conformably shaped non-circular closure disks and thereby produce non-circular two-piece paperboard container lids.

Abstract: A container forming apparatus having multiple working stations for producing a two piece, open top, closed bottom container including means for feeding flat blanks to a first rotating turret; the first rotary turret fixed for rotation about a horizontal axis, and having a plurality of radially projecting mandrels thereon. Container bottoms are fed to the first rotating turret upstream of the flat blanks relative to a direction of rotation of the turret, and each of the flat blanks is folded in succession about respective mandrels. The bottoms are secured to each of the blanks by a vacuum at a first station to thereby form individual container assemblies. The drive indexes the turret so that each mandrel is rotated to successive workstations arranged circumferentially about the first turret. The successive workstations include at least one container bottom heating station, a bottom curl station and at least one bottom expander station.

Abstract: A paperboard container and method of forming such container having a rolled brim is disclosed. The container being formed of a paperboard material having a caliper of at least approximately 0.007 inches, a rolled brim arc length of less than about 0.25 inches, an outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim being less than approximately 1.5 inches with the paperboard material forming the container having at least approximately 8 lbs/3,000 ft.sup.2 ream of size press adhesive included therein and preferably approximately 13 lbs/3,000 ft.sup.2 ream of paperboard material. One particular container includes dimensions wherein the outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim is approximately 1.

Abstract: A paperboard container and method of forming such container having a rolled brim is disclosed. The container being formed of a paperboard material having a caliper of at least approximately 0.007 inches, a rolled brim arc length of less than about 0.25 inches, an outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim being less than approximately 1.5 inches with the paperboard material forming the container having at least approximately 8 lbs/3,000 ft.sup.2 ream of size press adhesive included therein and preferably approximately 13 lbs/3,000 ft.sup.2 ream of paperboard material. One particular container includes dimensions wherein the outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim is approximately 1.

Abstract: The invention relates to a process for the fabrication of a drum made of kraft paper according to which a sheet of kraft paper is rolled on a mandril so as to constitute a rotating cylindrical tube. The end of the tube which forms the bottom is rolled with more than one turn and receives a disk which constitutes the bottom of the drum. The disk is then placed on the ridge (8) formed by the rolled edge, and a retaining collar (10) is placed around the tube. The collar is then tightened to clamp the disk (3A) onto the tube.

Abstract: A tubular packaging container includes a body (10) which includes a peripheral wall (34) defining top and bottom openings, at least one of which is closed by an end member. The body is formed from at least two panels (20, 30) of a suitable card material cut from flat stock. The panels are secured together in face-to-face relationship by adhesive (32) distributed across the mutually contacting faces thereof. The panels are then curved to the required shape to form a tube with marginal portions (31) of at least one of the panels secured together in overlapping relationship.

Abstract: A paperboard container and method of forming such container having a rolled brim is disclosed. The container being formed of a paperboard material having a caliper of at least approximately 0.007 inches, a rolled brim arc length of less than about 0.25 inches, an outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim being less than approximately 1.5 inches with the paperboard material forming the container having at least approximately 8 lbs/3,000 ft.sup.2 ream of size press adhesive included therein and preferably approximately 13 lbs/3,000 ft.sup.2 ream of paperboard material. One particular container includes dimensions wherein the outer radius of curvature of the container cut through the plane normal to the axis of the rolled brim arc length adjacent the rolled brim is approximately 1.

Abstract: A tamper evident container assembly includes a container body having a bottom wall and peripheral side wall, the side wall terminating in an outwardly curled rim. A reusable lid includes a top wall portion and a depending skirt portion, the depending skirt portion constructed of spiral wound stock and having a free end, a major peripheral portion of the free end tucked under the upper rim and upwardly into engagement with the side wall, with a minor peripheral portion of the free end left untucked to thereby provide a gripping area to facilitate tearing and removal of the tear strip. The depending skirt portion is further provided in a lower portion thereof with a line of weakening extending annularly about the skirt portion to thereby define an annular removable tear strip inclusive of the free end, with the line of weakening lying on the rim, between upper and lower edges of the rim.

Abstract: A tamper evident container assembly includes a container body having a bottom wall and peripheral side wall, the side wall terminating in an outwardly curled rim. A reusable lid includes a top wall portion and a depending skirt portion, the depending skirt portion constructed of spiral wound stock and having a free end, a major peripheral portion of the free-end rocked under the upper rim and upwardly into engagement with the side wall, with a minor peripheral portion of the free end left untucked to thereby provide a gripping area to facilitate tearing and removal of the tear strip. The depending skirt portion is further provided in a lower portion thereof with a line of weakening extending annularly about the skirt portion to thereby define an annular removable tear strip inclusive of the free end, with the line of weakening lying on the rim, between upper and lower edges of the rim.

Abstract: Containers and a method for forming such containers having larger brims with reduced brim curl defects is disclosed including providing a plurality of container blanks for forming containers, forming a plurality of container shells from the plurality of blanks, accumulating the plurality of container shells at an accumulation station, subjecting at least an upper periphery of the shells to a humid atmosphere to precondition the shells with the atmosphere preferably including steam, successively removing the shells from the accumulator and subsequently forming a brim curl about an upper periphery of the shell with the shells being subject to the humid atmosphere for a predetermined time period sufficient to form defect-free brim curls by extending the forming strain limits of the paperboard material. This method being carried out by using an accumulator for accumulating the container shells for further processing.

Abstract: A machine for making cups of thermoplastic coated paper, the machine including a frame or housing having a turret rotatably mounted on the frame, a number of work stations mounted on the frame in an equally spaced relation around the turret, a number of mandrels corresponding to the number of work stations mounted on the turret and a curling die mounted on the turret in radial alignment with each of the mandrels. The turret being rotated intermittently to align the mandrels sequentially with the work stations, the work stations being movable radially inwardly into a working relation with each mandrel, the mandrels being moved radially inwardly simultaneously with the work stations to form a tucked curl on the top edge of the cup.

Abstract: The invention provides a process and apparatus for forming an outwardly rolled lip on a cylindrical container body. The apparatus of the invention includes a mandrel having a cylindrical shaped portion and a lip forming annular cavity positioned coaxially with, and axially spaced from the cylindrical portion of the mandrel. The annular cavity has a generally semi-circular cross-section including an open mouth and a closed bottom extending outwardly of the mandrel. The mandrel additionally includes a radially tapered portion between the cylindrical portion and the lip forming die. The radially tapered portion tapers radially outwardly in the direction towards the lip forming die. An axial forcing means forces a cylindrical container body axially along the mandrel towards the lip forming die to thereby stretch the open end before the end is forced into the cavity and rolled outwardly.

Abstract: A machine for making cups of thermoplastic coated paper, the machine including a frame or housing having a turret rotatably mounted on the frame, a number of work stations mounted on the frame in an equally spaced relation around the turret, a number of mandrels corresponding to the number of work stations mounted on the turret and a curling die mounted on the turret in radial alignment with each of the mandrels. The turret being rotated intermittently to align the mandrels sequentially with the work stations, the work stations being movable radially inwardly into a working relation with each mandrel, the mandrels being moved radially inwardly simultaneously with the work stations to form a tucked curl on the top edge of the cup.

Abstract: A machine and method for making frusto-conical liners for a funnel of the type used on a urinal for female individuals. The liners are dispensed from a dispenser of the telescopic type so that pressing down on a top part of the dispenser releases a liner from the dispenser. The funnel lined by the liner is cradled in an improved funnel holder that includes an ejector that knocks a used liner off the funnel when the funnel is returned to the holder so that the user need not handle the liner. The machine that performs the method of making the liners includes a station where flat liners are removed from a stack of liners, spread open, and placed on a mandrel. The mandrel rotates to a second station where the liner is folded into its final configuration. The mandrel next rotates to a third station where the liner is heat treated, and the mandrel then rotates to a fourth station where the liner is removed from the machine and added to a stack of nested liners for subsequent charging into a dispenser.

Abstract: A grease and oil resistant container useful for baking foods contained therein at elevated temperatures which includes a bottom wall and an upturned side wall extending the periphery of the bottom wall having an inner layer of parchment paper and an outer layer of ovenable paperboard. Preferably, the side wall includes a rim that extends outwardly from the side wall in an arcuate path. The rim may include a peripheral lip which extends downwardly from the rim. The container is formed by deep drawing a flat, circular blank. The blank includes an ovenable paperboard base layer and an inner, food compatible parchment layer. In addition, prior to press forming the blank, a plurality of radially extending pleats are formed circumferentially about the outer area of circular blank which will aid in the formation of a substantially rigid side wall.

Abstract: A blank cutting technique in a process for manufacturing containers such as paperboard cups, canisters and cartons provides a flaired edge which, in one embodiment, forms a precurl to facilitate the formation of a completed brim curl and in another embodiment, is used to provide a flaired edge on a lid flap of a carton. In the latter case, the flaired edge which is created assists in insertion of the lid flap into the carton opening and creates an improved seal. In the blank cutting technique, stock material is positioned on a die cutting bed across a stepped portion. The stock material is cut along a cutting line offset from and substantially parallel to the stepped portion and against a lower surface of the die cutting bed defined by the stepped portion during the cutting operation, whereby the flaired edge is formed.