Abstract: A bonding apparatus according to the present invention relates to a sewing machine (28) which on stitching a connecting flap and a flap to be connected (hereafter referred to as only ‘connected flap’) of one unit, one set of two sheets for a corrugated cardboard box, ensures the folding of the connecting flap and the connected flap, inhibits the blind movement of the position, rectangular in section, of the sheets for the corrugated cardboard box when thread-stitching them, solves the load burdened on a looper mechanism, and provides an appropriate thread-stitching work. The sewing machine (28) comprises a sewing-machine needle mechanism (28b) provided with a sewing-machine needle (28a) and the looper mechanism (28d) having a needle plate (28c).

Abstract: A method for folding a polymeric flat bottom bag. The process includes, in general, opening the partially folded bottom of the unfinished bag, pulling the bag bottom taught in the transverse direction, and forming a fin where the two material edges join. A sharp crease is formed between the fin and the base portions of the bag bottom, and the fin is sealed. The fin is creased and sealed while the bag is moving in its transverse direction. The bag's direction is changed, so that the bag is moving in its longitudinal direction, and the fin flaps then folded against the base of the bag bottom. The flaps are sealed to the bottom, resulting in a flat bottom bag. A label may be added to the bottom of the bag.

Abstract: A process for manufacturing a multi-ply square bottom bag having a front wall, a back wall, a pair of gusseted side walls, each of which join to said front and back walls. There is also formed a gusseted square bottom panel having spaced but substantially parallel gusset edges and said bottom is joined to the front, back and side walls. The bag is produced by providing a web of inner ply material and a web of outer ply material, adhesively joining said webs into a composite and forming said bag from said joined webs. The improvement relates to forming a first flap in the inner web by cutting the web so as to form a plurality of free edges and a hinge line for said flap. The hinge line is connected to the free edges so that the free edges and hinge line define the flap. Thereafter joining the inner and outer webs to form the composite web.

Abstract: The present invention relates to an apparatus and method of manufacturing vacuum cleaner bags with a unique tri-lock top and bottom seal. The paper end of at the end of the open bag length is sealed onto itself with seam-paste glue three times providing an extra strong seam to accommodate the ever increasing air pressure created by today's powerful cleaners.

Abstract: A cargo container comprising a container body defining an interior cargo space, a flexible and expandable liner secured inside the container body, a bulkhead positioned in the container body and held against the liner, and bracing apparatus to brace the bulkhead in the cargo container. A first embodiment of the bracing apparatus includes a plurality of vertical beams connected to a floor of the container body, horizontally spaced apart and vertically extending upward against the bulkhead; and a multitude of cross beams connected to the vertical beam to held hold those beams upright. A second embodiment of the bracing apparatus includes a plurality of upwardly extending straps and a plurality of laterally extending straps.

Abstract: A bag construction comprising an outer bag and an inner bag contained therewithin and a method of making the same. The bag has an independent unitary construction. The bag construction is made from a tube length having inner and outer portions, by cross sealing the inner portion and folding the outer portion into a rectangularly shaped bottom.

Abstract: An apparatus for processing baglike container blanks by fitting the blank around a pair of forming plates arranged at a distance from each other in parallel, folding a pair of triangular ears flat while projecting the ears sidewise from the portion of the blank to be made into the bottom of a finished rectangular parallelepipidal container, and press-bonding the projected ears to outer surface portions of the trunk of the container at the lateral sides thereof after folding the ears over the outer surface portions. The apparatus includes a device for press-bonding the triangular ears, which comprises a pair of press members and a support member positionable therebetween. Each lateral side trunk portion and each ear folded thereover are clamped between the support member and the press member respectively from inside and outside the blank.

Abstract: An improved method of warm folding polymeric sheet material and apparatus for accomplishing the method. The method involves applying conductive heat to both sides of the material prior to folding and is accomplished in steps including: (a) positioning the sheet material; (b) positioning a mandrel plate so as to define a fold line for the sheet material; (c) positioning an exterior heater against the material along the fold line; (d) positioning an interior heater element against the material opposite the exterior heater; (e) and (f) applying preselected amounts of heat to the fold line area through the heaters; (g) retracting the interior heater; (h) mechanically folding the sheet material along a fold line; and (i) annealing the fold by applying additional heat through the exterior heater. The process may also be augmented by adding additional steps.The primary use of the invention is in folding polyvinyl chloride jackets for use in enclosing floppy disks.

Abstract: A multiple pocket, expandable envelope is formed by folding panels of a planar, unitary blank relative to each other. The envelope has a front, a back, and a pair of intermediate panels hingedly coupled to each other along parallel end edges. A front divider panel is disposed between the front panel and one of the intermediate panels while a back divider panel is disposed between the back panel and the other of the intermediate panels to define four pockets within the envelope. The back panel is hingedly coupled to the back divider panel along a fold line at one side thereof. The one intermediate panel is hingedly coupled to the front divider panel along a fold line at one side thereof. A plurality of side panels hingedly couple the front panel to the front divider panel and the other intermediate panel to the back divider panel.

Abstract: A multiple pocket, expandable envelope is formed by folding panels of a planar, unitary blank relative to each other. The envelope has two pair of front and back panels hingedly coupled along a common end edge. Each front and back panel includes a front and back divider panel therebetween to define six pockets within the envelope. Each front panel is hingedly coupled to a front divider panel along a fold line at one side thereof. Each back panel is hingedly coupled to a back divider panel along a fold line at one side thereof. A plurality of side panels hingedly couple each front panel to a front divider panel at the other side of the front panel, each back panel to a back divider panel at the other side of the back panel, and the front and back divider panels at each pair to each other. One of the front panels in each pair is hingedly coupled to one of the back panels in an adjacent pair to form the six-pocket, expandable envelope.

Abstract: A device and method for folding the main and secondary flaps of self-sealing envelopes into the inoperative condition. The envelopes (11) are fed, bottom edge leading, into a roller (20), the front panel of the envelope being in contact with the roller. The bottom edge lifts off the roller and the envelope is arrested and temporarily supported by abutment means (38,40,44) while the main flap (16) of the envelope is held to the roller by suction (22,24) and carried around the roller and thereby folded relative to the front panel of the envelope. In this position of the envelope, the secondary flap (18) slidably engages the surface of the roller and is then arrested by stop means (28) which carry the secondary flap (18) around and fold it relative to the back panel of the envelope.