Abstract:
A multi-piece, tub shaped paperboard container having a circular opening in the top thereof is provided with a multi-piece, reinforced rim coated with a layer of meltable plastic and is assembled by appying heat to overlapping seams in order to melt the plastic coating and thereby seal the seams. Heat is applied evenly around the entire periphery of the rim by a 2-piece, annularly shaped, heated collar which may be selectively shifted into conforming engagement with the container. The even application of heat around the entire periphery of the rim equalizes the surface tension of the plastic coating during melting thereof to avoid deformation of the rim during the heat sealing process.
Abstract:
When manufacturing bags from tubular paper sections of a single layer or multiple layers, at least one end of each flat, tubular section is expanded into a bottom square. Lateral flaps formed in this way are folded such that they overlap and partially cover corner flaps. In order to easily bond expanded bottom squares together, the regions of the tubular sections which are to be bonded together are provided with coatings of thermoplastic which are heated and pressed together.
Abstract:
A bag suitable for use in microwave cooking is constructed of an elongated tube of flexible material closed at one end by a cold seal closure and having a heat seal adhesive deposit applied to the other end thereof for use in closing the bag after filling thereof to form a package. In another embodiment, a package suitable for use in microwave cooking is constructed of an elongated tube of flexible material closed at one end by a cold seal closure and having a cold seal adhesive deposit applied to the other end thereof for use in closing the bag after filling thereof. Methods for making bags and packages including methods for making rolls from which bags and packages may be made.
Abstract:
A bag suitable for use in microwave cooking is constructed of an elongated tube of flexible material closed at one end by means of a cold seal closure and having a heat seal adhesive deposit applied to the other end thereof for use in closing the bag after filling thereof; and methods of making the same are described, including the making of a roll from which said bags can be made.
Abstract:
A bag suitable for use in microwave cooking is constructed of an elongated tube of flexible material closed at one end by means of a cold seal closure and having a heat seal adhesive deposit applied to the other end thereof for use in closing the bag after filling thereof; and methods of making the same are described, including the making of a roll from which said bags can be made.
Abstract:
A preferred embodiment of the invention comprises a box forming machine operable to raise folded box material to a box frame, and to fold the edges that comprise the box bottom into a bottom area and to tape the folded edges. The forming equipment is equipped with a box material supply that stores folded box stock material. The apparatus withdraws a piece of box material from the box material supply station by means of a vacuum chuck. The box stock material is raised to a box frame by means of a raise guide and further to a bottom folding station that folds the inner box edges which extend in a direction transverse to a taping direction. Outer edges are then folded into the bottom areas along the taping direction and a tape head tapes together the inner edges by means of a tape head drive.
Abstract:
A mechanism of a band attaching device of a case sealing machine for preventing the band from falling down. A fourth band guiding wheel is disposed under the band stopper boards and movable on the front band pressing wheel support. When the fourth band guiding wheel is positioned at a lowest position, the front edge of the outer surface of the fourth band guiding wheel intersects the band stopper boards and the band is forced to move downward and linearly contact with the band stopper boards on the adhesive face. At this time, the band is urged to forward project into an arch state so as to enhance the upright standing ability of the band without falling down.
Abstract:
A device and method for forming a pocketed card stock or paper member having a wide peripheral edge. A template (12) is provided having a forming edge with a shape corresponding to the wide peripheral edge of the member. A flexible sheet of card stock or paper (14) is also provided. An urging device (62) is provided for urging the flexible sheet of card stock or paper (14) adjacent to the template (12) such that an extended portion (54) thereof extends beyond the forming edge of the template (12) and a remaining portion thereof does not extend beyond the forming edge of the template (12). A folding device (26) is provided for urging the extended portion (54) around the forming edge and a securing device (24) is provided for securing the extended portion (54) to the remaining portion of the flexible sheet of card stock or paper (14) after the extended portion (54) has been urged around the forming edge to form a wide edge. The flexible sheet of card stock or paper (14) is held into contact with the template (12) with vacuum pressure. The folding device comprises a roller (26) or a spring loaded bar (86) to force the wide edge of the flexible sheet (14) around the template (12) to form two creases in the flexible sheet (14).
Abstract:
Apparatus for making a plastic film bag having bag mouth lips projecting beyond a heat-seal band closing the bag mouth and providing a stiffening patch bonded to the interior or exterior of a bag mouth lip between the heat-seal band and the bag mouth end for reclosing the bag mouth after the heat-seal band has been opened. For reclosing the bag mouth, the apparatus applies stiffening patches to a web of sheet material for making bags at the time that the bags are formed and filled by clipping from a strip of patch-making material patch pieces having pressure-sensitive adhesive on one side. The apparatus transfers such patch pieces from a rotary shear onto the bag-making material by an orbiting transfer member having a suction pickup to pick up a patch piece and blowing means for subsequently detaching the patch piece from the transfer member and depositing it onto the web of bag-making material.
Abstract:
Apparatus and method for developing and applying an adhesive strip and protective cover strip on the backing side of a hospital underpad. The apparatus is positioned along the production line where the folded hospital underpad material has been fabricated and is ready for cutting into individual pads. The apparatus draws a continuous ribbon from a supply spool, applies a strip of liquid plastic melt adhesive to the upper side of this ribbon, and then inverts the ribbon and directs it, with the adhesive strip on the underside, onto the intermediate layer of the folded underpad material where rollers press it into the desired position. The plastic melt adhesive fuses to the portion of the hospital underpad backing layer with which it comes in contact. After the folded sheet material is cut into individual hospital underpads, the ribbon serves as a protective strip which may be easily pulled away from the adhesive strip when the hospital underpad is to be placed in service.