摘要:
In a cup sealing system including a cup former and at least one burner for sealing a cup bottom seam where a cup side wall blank is mated with a bottom disk, with one portion of the side wall extending beyond the bottom disk, an improvement wherein at least one burner includes a burner head with a plurality of circumferentially arranged flame nozzles and a pilot flame aperture, the pilot flame aperture adapted to be located axially adjacent the one portion of the cup side wall; a flame ignitor/sensor positioned adjacent the flame aperture; and a combustion chamber which extends from a forward edge of the burner at the flame nozzles to a location axially beyond the container side wall to thereby achieve uniform heating of the extended portion of the cup side wall. The burner head also includes a pair of relatively movable sleeves adapted to create an annular pilot flame ring gap on start-up.
摘要:
A flat-sitting bottom end closure for liquid filled, thermoplastic-coated paperboard containers, and mechanism for forming same. The mechanism includes an indexible rotor having a plurality of mandrels on which tubular container blanks are mounted, wherein each mandrel has an end cap defining a configuration which, in conjunction with a complementary pressure pad, produces four flat corner portions or pedestals on the container bottom end closure when confined between the pressure pad and each end cap.
摘要:
There is provided a blanket sealing bag machine having a variable diameter sealing drum comprising a plurality of spindles disposed at a first end of an axle and a like plurality of spindles disposed at an opposing end of the axle, the plurality of spindles being greater than sixteen spindles, the spindles extending radially from the axle. There is further provided a blanket sealing bag machine that maximizes the angle of blanket wrap.
摘要:
A method for providing paperboard to paperboard facing surfaces for forming an effective seal for cartons formed from a laminate of a relatively flexible fluid impervious material and a relatively rigid paperboard material.
摘要:
A carton has an openable bellows folded top comprising opposed side panels (30, 32) and front (34) and rear (28) panels folded in and sealed between the side panels. The panels are sealed together to close the top in a liquid tight manner. The top-forming front panel has an upper sub-panel comprising a central portion (44) having an upper free edge for defining the rim of a pull-out pouring spout and first and second flanking portions (46, 48) of unequal width lying each on a respective side of the central portion. The central portion is of a lesser height than the flanking portions and is not sealed on its interior face to the overlying side panels or to the rear panel in sealing the top. A reliable seal is formed but there is no obstacle to the pulling out of the pouring spout once the wing portions have been peeled apart.
摘要:
A paper box folding and sealing machine for forming a hemmed edge. A skiving station removes a portion of a carton blank material at the area to be hemmed. A hemming station folds the skived portion onto the blank, irons it and then opens the hem to lie in a predetermined plane that intersects the plane of the blank. Superheated air directed in a laminar-like air flow, activates a thermoplastic coating adjacent the skived portion of the area to be hemmed. Folding fingers, tack rollers and presser rollers then fold the skived portion onto the activated thermoplastic coating to form a hem that is sealed against the adjacent portion of the blank.
摘要:
Containers formed of a flexible sheet of material capable of being sealed for closing off the interior of the container from the ambient atmosphere. The sheet material is resistant to tearing. The container comprises a mouth portion including a peel strip or layer fixedly secured to the inner surface of the container and extending substantially the entire length of the mouth portion, with adjacent portions of the peel strip or layer being in releaseable engagement with each other. The engagement forms an air-tight interfacial seal which is readily openable by peeling the engaging portions of the peel strip or layer from each other to provide ready access to the interior of the container without tearing the sheet material forming the container.Some containers are formed in accordance with the method for applying the peel strips transversely across a web of sheet material and heat sealing the strips to the material at longitudinally spaced locations and thereafter severing the web into sections which are formed into the container. Other containers are formed by use of a peel layer on the entire inner surface of the container. The peelable interfacial seal for such containers is formed by heat sealing the same within a desired temperature range. The remaining seams of the container are permanent and are formed by heat sealing the same at temperatures in excess of those used in making the peelable seal.
摘要:
A process and an apparatus for producing a welded can body having an organic coated welded part are provided in which the exposed metal portion on the inside of the welded part of the can body and its vicinity is covered with a tape of an organic resin alone or a mixture of an organic resin with an inorganic material such as a pigment, a metal, etc. The resin tape is entirely supported by a mandrel to be disposed inside the can body, and pressed against the inside surface of the welded part and its vicinity. By heating the welded part of the can body, the resin tape is heated during pressing.
摘要:
Containers formed of a flexible sheet of material capable of being sealed for closing off the interior of the container from the ambient atmosphere. The sheet material is resistant to tearing and includes an inner surface and an outer surface. The container comprises a mouth portion including a peel strip or layer fixedly secured to the inner surface of the material and extending substantially the entire length of the mouth portion, with adjacent portions of the peel strip or layer being in releasable engagement with each other. Some containers are formed in accordance with the method for applying the peel strips transversely across a web of sheet material and heat sealing the strips to the material at longitudinally spaced locations and thereafter severing the web into sections which are formed into the container. Other containers are formed by use of a peel layer on the entire inner surface of the container. The peelable interfacial seal for such containers is formed by heat sealing the same within a desired temperature range. The remaining seams of the container are permanent and are formed by heat sealing the same at temperatures in excess of those used in making the peelable seal.
摘要:
A hot wire has one end mounted on a pivotally supported arm which is biased to keep the wire straight and taut. The end of the wire is bent to an L-shape and is rigidly attached to the arm. Between the bend and the point of attachment, the wire is formed with a flexible portion which expands and contracts to compensate for pivotal movement of the support arm.