Abstract: A plurality of container bags containing matters such as plural kinds of seasoning sauce or two kinds of liquids of a two-liquid mixture adhesive are allowed to be cut simultaneously so that the contained matters can be taken out simultaneously. The container bags according to the present invention is such that two continuous container bags for individually containing two kinds of sauce are made of sheets comprising synthetic resin films and are joined together. Further, a fold line for folding up the two container bags is formed in the joint portion, and a notch used to form a contained-matter take-out opening formed at a position on the fold line.

Abstract: An improved trash bag that helps to minimize or eliminate the release of odors is disclosed. In one embodiment, the present invention is a trash bag having a first bag connected to a second bag, both bags having openings, where the second bag has a device capable of constricting the opening of the second bag in order to substantially prevent odor from escaping the second bag. Optionally, the second bag is capable of including a deodorizing patch. The deodorizing patch can be removably secured to the second ba. In another embodiment, the present invention is an improved trash bag having an outer bag and an inner bag within the outer bag, the outer bag and inner bag being formed with a common wall portion, wherein the inner bag has an inner opening closure device capable of constricting the inner opening in order to substantially prevent odor from escaping the inner bag. A deodorizing path can be removably secured to the inner bag.

Abstract: A collapsed bag of unitary construction is made of supple polymeric material, having first and second opposed contiguous flat sidewalls joined at edges and at the bottom but free or with user-releasable weakening at upper edges. The upper edges define a bag mouth. Appropriately situated graspable points at or near bag edges allow the sidewalls to be tensioned or snapped in opposing directions thereby causing the interlayer cling, to which supple polymeric bags are renownedly susceptible, to be readily disrupted for the full distance of contact between the tensioning points and thus for virtually the entirety of the bag mouth to be opened.

Abstract: Flexible packages for use in an aseptic filling and sealing apparatus and systems incorporating the packages and apparatus. The packages are formed of a flexible material and include an openable line so that the package can be opened, filled and sealed with a product under aseptic conditions.

Abstract: An airbag and a method for making an airbag of the type that includes an irregularly-shaped panel, such as the side panels of a passenger airbag. The irregularly-shaped side panel is first divided into two segments with a single straight line to define an inflation segment and an impact segment. The straight line drawn to define the largest polygon that can be defined by any single straight line without coming too close to the inflation module hole. By segmenting the larger, irregularly shaped panel into two smaller ones with one of those being polygonal, better nesting of the segments can be obtained, which significantly improves fabric utilization to offset the labor cost from sewing the two segments together when making the irregularly shaped side panel required for the airbag.

Abstract: A method for manufacturing square bottom plastic bags designed to stand upright when opened. The bags are constructed with open tops, side handle openings and attached headers or with t-shirt style handles. The bags are produced in registered bag stacks and include means for adhering a rear surface of one bag to a front surface of a subsequent bag making the bags self-opening when used in dispensing rack. The headered bags have tear-off headers or headers with weakened areas that will rupture upon dispensing. The t-shirt bags have apertures through the handles to suspend the bags on a rack or a header attached above the handles. The bags have detachable or rupturable center tabs. The bags are registered with hot pins or cold stakes through an upper portion of the bags or bag handles. The bags have openings, microperforations, or are formed of porous material to dissipate heat or moisture.

Abstract: In a continuous strip of containers, the latter are distributed stepwise from one another according to a longitudinal axis of the strip, two adjacent containers being separated by a step. From one longitudinal edge zone traction pins protrude laterally that are intended in use to interact by contact with an advancing device for advancing the strip. For each traction pin a corresponding opposing projection is prearranged that protrudes from the opposite side of the longitudinal edge zone. The strip is designed to be conveyed along an advancing direction that is parallel to a longitudinal axis thereof. Each opposing projection is located slightly forward in relation to said advancing direction, compared with the relative traction pin, at an axial distance that is shorter than the step between the containers.

Abstract: A flexible reclosable container with a header strip, fastener elements, and a slider. The header strip preferably extends from the mouth of the bag, and includes a line of weakness for easy tear off of the bag. The slider and profiles are arranged such that the mouth of the bag is substantially open.

Abstract: A polyethylene produce bag roll includes a plurality of plastic film bags joined to one another with a perforation line. The perforation line is slit at least one end for a first predetermined distance to aid in tearing the bag from the roll. The perforation may also include a chisel cut to aid in removing bags from the roll in a dispenser equipped with a perforation parting means. The bags may be gusseted or ungusseted. Outer surfaces of the bags are corona treated to enhance adhesion of printing ink to the bags. The bag roll may be cored or uncored.

Abstract: In connection with the packaging of items or loose material in sheet packings it is known to use a web of cohering flat bag members, which is successively conveyed to a filling station, in which the bag members are opened, one by one, for filling and subsequent closing and separation from the web. The free mouth edges of the bag members or the web are profiled for supported conveyance on opposed carrier rods, tubes or gripping chains which, just before the filling station, diverge from each other for effecting opening of the bag members. The invention provides for a flat bag web, the upright edge strip portions of which are caused to be folded down over respective opposed carrier chains.

Abstract: A system for transferring blood product between a blood storage bag and a processing bag. The system includes an airtight containment chamber for supporting therein one or more blood storage bags. A door is provided for access to the chamber and there is included an airtight fixture that allows tubing from the blood storage bag to exit the chamber. A fluid pump is coupled to the containment chamber for establishing either pressure or vacuum within the containment chamber. A controller controls the air pump to, in turn, control the transfer of a blood product.

Abstract: A convertible carrying assembly has separable upper and lower sections, and a removable lower outer covering. The upper section consists of a small handbag with external fasteners for holding the lower outer covering and lower section. When disconnected, the upper section may be used as a handbag. The lower section includes a removable drawer-style organizer. Side panels formed from the outer covering may be unzipped to give access to the drawers in the organizer. If desired, the organizer may be removed for stand-alone use. The outer covering may be used as a stand-alone bag, or may be unzipped to form a flat surface that can be further used or folded for a variety of functions.

Abstract: A package for unitizing at least two pouches includes a flexible multipack header positioned between the pouches and adhered along a top portion of the pouches. Each pouch is removable along a tear line to expose a slider, a zipper and/or a secondary tear line to access the pouch or a tamper evident seal.

Abstract: A plastic bag is supplied as a continuously attached length of plural bags, each bag being separated from adjacent bags along a supply length by a perforated tear line. A seal which runs codirectionally with the tear line forms a closed bottom for each bag, such that when a bag is separated along the tear line from a remainder of the supply, the bag is enclosed along three of its four edges enabling containment of produce or other items placed therein via the opening at the fourth, and remaining edge of the bag which is coextensive with the perforation line. The supply length of bags is advantageously stored on a roll, fan folded, bundled or compactly stored in other suitable manner permitting advancement of consecutive bags when pulled out of the stored condition by a user.

Abstract: A square bottom plastic bag is designed to stand upright when opened. The bags are constructed with open tops, side handle openings and attached headers or with t-shirt style handles. The bags are produced in registered bag stacks and include means for adhering a rear surface of one bag to a front surface of a subsequent bag to make the bags self-opening when used with a dispensing rack. The headered bags have tear-off headers or headers with weakened areas that will rupture upon dispensing. The t-shirt bags have apertures through the handles to suspend the bags on a rack or a header attached above the handles. The bags have detachable or rupturable center tabs. The bags are registered with hot pins or cold stakes through an upper portion of the bags or bag handles. The bags have openings, microperforations, or are formed of porous material to dissipate heat or moisture.

Abstract: Provided is a plastic bag including a live elastic strip that, in the elastic strip's normal condition, contracts thereby constricting an opening of the bag to assist in retaining the bag to an object. The elastic strip includes a first region that is continuously attached to a sidewall of the bag between a first side edge and a second side edge of the bag and a second region that remains unattached to the sidewall. The attached region does not contract but instead forces the portion of the sidewall to which it is attached to pucker into a serpentine path. The unattached region does contract causing the portion of the sidewall to which it is adjacent to bunch together. Also provided is a method for manufacturing a plastic bag that involves stretching a live elastic tape and continuously attaching a region of the stretched tape to a web of plastic material.

Abstract: A plurality of container bags containing matters such as plural kinds of seasoning sauce or two kinds of liquids of a two-liquid mixture adhesive are allowed to be cut simultaneously so that the contained matters can be taken out simultaneously. The container bags according to the present invention is such that two continuous container bags for individually containing two kinds of sauce are made of sheets comprising synthetic resin films and are joined together. Further, a fold line for folding up the two container bags is formed in the joint portion, and a notch used to form a contained-matter take-out opening formed at a position on the fold line.

Abstract: A plastic film bag assembly includes a bag having front and back walls joined together and defining an opening leading to a cavity. A header portion extends from the back wall for supporting the bag on a structure. A severance line extends across the header and includes tear sections extending inwardly from each of the header side edges. The severance line also includes support sections adjacent and inwardly of the tear sections. The support sections have a strength per unit length of severance line which is greater than the tear sections strength per unit length of severance line whereby, when severing the bag away from the header, a greater force is required for severing along the severance line support sections than the force required for severing along the tear sections. In use, the bag front wall lip is grasped and pulled away from the header for separating complementary profiles and opening the bag. The header tear sections are severed until reaching the support sections.

Abstract: A shoe-storing saddlebag assembly for carrying and storing shoes. The shoe-storing saddlebag assembly includes strap members being adapted to be extended and fastened about a backpack; and further includes slack-adjustable straps also being adapted to be extended about the backpack; and also includes fastening members for fastening the strap members about the backpack; further includes saddlebag members being attached to the strap members and to the slack-adjustable straps and being adapted to be draped upon the backpack for carrying and storing shoes.

Abstract: A resealable plastic bag having a substantially planar shaped body exhibiting first and second opposing panels, sealingly connected along a pair of sides and with a bottom interconnecting the sides such that the body forms an interior receptacle volume. A pair of re-sealable bead portions are integrally formed into the planar shaped body and arranged at first and second opposing and extending locations along a top of the body. A header is integrally formed with the planar shaped body and in proximity to the bead portions. A perforation line is established between the header and resealable bead portions, in order to facilitate tear-away removal of the planar shaped body from the header. A sliding zipper is attached to the bag and in order to contain the resealable bead portions therebetween. A plurality of headers can be heat staked together and in order to support a like plurality of bags.

Abstract: A web of bags for use in an automatic bagging machine is formed from a single layer of plastic film or a flattened tubular plastic film. When formed from the tubular material, the bags are doubled walled. The bags have lateral slits therein to accomodate opening of the bags in an automatic bagger. The bags are further configured to be received upon a track having an expandable portion that laterally displaces the bags in the web, causing them to open beneath a filling head for receipt of articles. A latter portion of the track allows the bags to resume their normally closed posture, where they are sealed and separated from each other.

Abstract: Systems and methods for providing nested disposable bag packs for selective use to increase user efficiency, to enhance health and sanitation, to provide a savings of time and money in using disposable bags, to selectively provide needed bag strength, and/or to facilitate use of the disposable bags. A nested disposable bag pack is used to allow a new bag or bag-set to be available upon extraction of a previous bag/bag-set. The nested bag pack is a pre-packaged, multi-inserted bag pack, wherein the bags have been inserted within one another during the manufacturing process. The bags comprise a disposable material, such as a polymer (e.g., polyethylene or another polymer material), paper, or another material. The nested bag pack has a variety of uses in a variety of industries, including household and commercial use.

Abstract: A bag assembly with a connection means for temporarily binding nesting bags to each other and preferably for later additionally acting as a closure means for those same bags. In accordance with an exemplary embodiment of the present invention, the assembly is configured such that an adhesive is revealed when a nested bag is removed from the assembly. That same adhesive then provides a closure means for the orifice of the bag.

Abstract: Provided is a plastic bag including a live elastic strip that, in the elastic strip's normal condition, contracts thereby constricting an opening of the bag to assist in retaining the bag to an object. The elastic strip includes a first region that is continuously attached to a sidewall of the bag between a first side edge and a second side edge of the bag and a second region that remains unattached to the sidewall. The attached region does not contract but instead forces the portion of the sidewall to which it is attached to pucker into a serpentine path. The unattached region does contract causing the portion of the sidewall to which it is adjacent to bunch together. Also provided is a method for manufacturing a plastic bag that involves stretching a live elastic tape and continuously attaching a region of the stretched tape to a web of plastic material.

Abstract: A multi compartment reclosable plastic bag including four or more panels sealed together to form at least two bags with each bag having a resealable opening. One of the bags may be smaller than the other(s). The plastic bags further include lips that are adjacent to the resealable openings. The bags incorporate closure elements for sealing and unsealing of the resealable openings. The smaller bag may include a lip that folds toward the space between the smaller bag and an adjacent bag to form a cuff portion adapted to secure contents inserted between the smaller bag and the adjacent bag.

Abstract: A three-sided pouch formed from a sealable foil comprises two parallel longitudinally extending tubular chambers. A longitudinal bendable sealing seam separates the chambers. Transversely extending sealing seams close the opposite ends of the tubular chambers. In order to enable such pouches to be easily opened, one of the transversely extending seams has a widened portion straddling the longitudinally extending sealing seam and extends to both tubular chambers. A tearing aid for facilitating the tearing open of the two tubular chambers is arranged in the widened portion.

Abstract: A zippered bag comprises a main bag body having first and second opposing face members, a top, a bottom, and first and second opposing sides; and a zipper disposed on the main bag body. The zipper extends from the top to one of the first and second opposing sides so as to be oblique relative to the top. The zipper may comprise a male track and a female track engageable therewith. The male track and the female track may be formed by an injection molding. Each of the male track and the female track may comprise a main portion and end portions provided on opposite ends of the main portion, each of the end portions having a smaller height than that of the main portion. The main bag body may have a sealed zone, which is placed on the outer side of the zipper and has an opening guide portion, which is provided in parallel with the zipper so that the sealed zone is to be easily torn open along the opening guide portion.

Abstract: The invention relates to a bag assembly for foods, in particular granular foods, including at least one bag which comprises two main walls (11, 12) joined by two side faces forming a gusset (S1, S2, S) along each side edge of the said main walls, and gripping means for the bag assembly, characterized in that the gripping means are implanted close to a side edge of each bag of the assembly.

Abstract: A manufacturing method for plastic bags recombines a layer of plastic to the outside surface of the bag to provide a portion of the outside surface with a lower melting point than the inside surface of the bag. The bags are arranged in stacks and heat is applied to bond the low melting point layer. A relatively weak bond is formed between adjacent outside bag surfaces while the bag inside surfaces remain free of each other. The weak bond is positioned along the median of the bag and near the bag opening. A second bag is drawn open by the bond during retrieval of a first bag. A flexible separation tab is arranged to maintain the separation between the inside surfaces of the open bag. The separation tab may also be made conspicuous to present an obvious retrieval point for the top bag in a hanging bag dispensing arrangement.

Abstract: An integrated stack of individually wrapped flat disposable utensils (e.g., wooden spoons) and methods of forming the same. Preferably, adjacent layers in a stack of individually wrapped flat disposable utensil layers are bonded one to another by means of a removable hot melt pressure sensitive adhesive (PSA). The bond formed by the adhesive is such that the entire stack of layers forming the package is integrated in a manner whereby the bonds physically support the weight of the stack without separating. Such a bond, however, is releasable in that a user may exert sufficient force to separate one layer, or an individual one of the wrapped utensils in the layer, from another.

Abstract: The invention relates to tubular bag-type packings and, in particular, it relates to so-called three-sided pouches formed from a sealable foil and comprising two longitudinally extending tubular chambers. The chambers extend parallel to each other and have opposite ends. A longitudinally sealing seam separats the chambers, and the sealing seam is bendable. Transversely extending sealing seams close the opposite ends of the tubular chambers. In order to enable such packings to be easily opened, one of the transversely extending seams has a widened portion straddling the longitudinally extending sealing seam and extends to both tubular chambers. A device, i.e. a tearing aid for facilitating the tearing open of the two tubular chambers is arranged in the widened portion.

Abstract: A plurality of bags, sleeves, or pouches are detachably joined and provided on a roll. The bags, sleeves, or pouches may be made by joining or by folding the material and forming spaced seal and tear lines in the material.

Abstract: The present invention is directed to a locker bag apparatus and system. The locker bag apparatus is preferably made of pliable or soft material and is provided with a zipper configured to lock with a locking hook, preferably a locking wall pole or tree hook.

Abstract: For plastic bags put up as a supply roll from which the bags are detached one-at-a-time from a free end thereof in the bagging of dry cleaned garments to obviate soilage during transit to the customer's home, the sequential numbering of the bags in the supply roll to verify the starting quantity and usage at the bagging site.

Abstract: A storage bag rack system which includes a support assembly which includes a base portion defining a surface which is substantially horizontal and a support portion which extends generally vertically upwardly from the base portion, a mount disposed on the support portion, the mount being adapted to support a pad of storage bags on the support portion in general vertical orientation relative to the base portion such that an opening of a first bag in a pad of bags is oriented away from the support portion to facilitate insertion of material in the bag.

Abstract: A utility bag (10) comprised of a primary bag (12) and a releasably attached auxiliary bag (30. When the auxiliary bag (30) is attached to the primary bag (12), various items, such as sporting equipment, can be placed in each respective bag (12),(30) and carried together when desirable, the auxiliary bag (30) can be detached from the primary bag (12) by utilizing two sets of buckles. The primary bag (12) includes a plurality of straps which allow the primary bag (12) to be worn over a shoulder, such as a purse or carried by hand by utilizing a hand grip (102). The auxiliary bag (30), when detached, can be held by an attached carrying handle (118), or worn as a backpack by utilizing a separate pair of back straps. Both the primary bag (12) and the auxiliary bag (30) are constructed of a strong waterproof material and both bags utilize zippers to gain access to the bag's interior.

Abstract: A reclosable plastic bag includes two panels sealed to form a container having a bottom and an openable top. The plastic bag further includes lips that are adjacent to the openable top and which are initially joined to one another by a removable element. The removable element when attached indicates that the bag has not yet been used. When the removable element is no longer attached this indicates that the bag may have been used (contaminated). The reclosable plastic bag also includes a closure element for sealing and unsealing the openable top of the bag.

Abstract: A web of bags for use in an automatic bagging machine is formed from a single layer of plastic film or a flattened tubular plastic film. When formed from the tubular material, the bags are doubled walled. The bags have lateral slits therein to accomodate opening of the bags in an automatic bagger. The bags are further configured to be received upon a track having an expandable portion that laterally displaces the bags in the web, causing them to open beneath a filling head for receipt of articles. A latter portion of the track allows the bags to resume their normally closed posture, where they are sealed and separated from each other.

Abstract: A new sandbag that has a spring-like collar attached to the inside of the sandbag's mouth that forces the mouth closed. In order to fill the bag with sand the flaps that form the mouth have to be pulled apart. The self-closing feature of this sandbag can be used to automate sandbagging by having the bags packaged with one mouth flap in the open position. As the bags are removed from the stack, roll or similar packaging, the mouth flap clamps around the open-end of the source of sand, which can be similar to a funnel. After the bags are filled, they are removed, sealed shut and the next bag is put in place. The self-closing feature of this sandbag first allows for the sand to be guided into the bag, and then forces the mouth of the bag to close. The mouth can be further secured by a sealing means such as staples, thread or fiber, or hook-and-loop fastening surfaces.

Abstract: Methods and apparatuses for filling flexible receptacles or bags with bulk or particulate material is provided. In one aspect, an automatic sand bag filling apparatus is disclosed which includes a bulk fill channel which may be placed within the interior of each bag to be filled. The filling apparatus may have a metering device for providing the desired amount of bulk material to the fill channel. The fill channel may be moveable along a fixed path for engaging and advancing a series of interconnected bags. Articulating spreader bars may be provided to support the bag during filling. In one embodiment, the filling apparatus is mounted on a trailer assembly and includes a reservoir for storing the bulk sand. The sand may be transferred from the reservoir to the filling apparatus using augers, conveyors, etc. A preferred construction of a series of interconnected sand bags and a method of making a series of interconnected bags is also disclosed.

Abstract: Reclosable bags, plastic film for making the bags, and a method and apparatus for making the bags are disclosed. The bag has a reclosable fastener (26) connected to a single wall of the bag, and the film (55) has a reclosable fastener (26) connected to one side thereof which does not require attachment to any other portion of the film (55) when making a bag. The fastener (26) has a tamper-proof member attached thereto to indicate if the bag has been previously opened. The film (55) can be wound into a roll (54) suitable for use on conventional bag making machines including form, fill, and seal machines or a chain of coilable reclosable bags can be produced therefrom since the fasteners (26) are connected to the web preferably transversely to the bags longitudinal formation axis.

Abstract: A selectively closeable plastic film bag structure includes front, middle and rear panels forming a first bag between the front and middle panels and a second bag between the middle and rear panels. A first adhesive strip between the middle and rear panels extends between terminal ends at the second bag side edges. The front and rear panels extend above the middle panel and a second adhesive strip between the front and rear panels extends between terminal ends at the first bag side edges. A release liner is provided over the adhesive strips and retaining the bags open for placing product therein. By removing the release liner, the first bag is closed with the adhesive strip between the front and rear panels and the second bag is closed with the adhesive strip between the middle and rear panels.

Abstract: A method for forming containers comprises selectively heating a first web (8) and second webs (10), joining together said first web (8) and said second web (10) along intended outlines (12) of containers (16) so as to form pouches (12a) bounded by said intended outlines and conduit means (44) leading out into said pouches, said conduit means (44) being suitable to inject therethrough a forming fluid, forming said containers (16, 50) by expanding said pockets by injecting said forming fluid through said conduit means (44); apparatus for forming containers, comprises indexing a first web (8) and a second web (10) of sheet material through a heating station (2) provided with selective heating means (24, 25) arranged to selectively heat said first web (8) more than said second web (10) and through a welding-and-forming station (4) in which opposing portions of said first web (8) and second web (10) are joined together by welding-and-forming means (26, 30) along intended outlines (12) of containers so as to form p

Abstract: A method of forming a plurality of interconnected bulk bags or with an interconnecting section of material between adjacent bags on a roll or blank of flexible material to permit the blank of material to be advanced for subsequent processing. The interconnecting section is defined at least in part by a separation line that permits scrap or waste material to be removed from the blank without removing the interconnecting section. This permits the bags to remain interconnected after they are formed so that they may be disposed on a roll or folded in a box for convenient shipping and handling of a plurality of bags. Desirably, perforations maybe provided between adjacent bags to facilitate removal of an individual bag from the remainder.

Abstract: A portable multi-pocket organizer for a carrying case of the type having a primary shell of pliable material formed of a pair of substantially identical primary half shells connected together for hinging along a common side and forming a primary receptacle, a multi-pocket assembly of pliable material that removably stores within the carrying case, the multi-pocket assembly device includes a rectangular pocket back panel having a front face and a back face, at least two open mesh pockets on the front face of the pocket back panel, and the open mesh pockets have openings oriented in a common direction, a removable auxiliary case in each open mesh pocket, each case formed of a primary shell of pliable material, the primary shell formed of a pair of opposed half shells connected together for hinging along a common side and forming a receptacle, each said primary shell having an outer fastener so that the outer fastener provides a means for opening and securing each auxiliary case.

Abstract: A liner apparatus for use with a toilet seat includes a base having a configuration complementary to that of a toilet seat for resting thereon. A plurality of bags compressed one atop the other are removably attached to one another and to the base. The base defines an outwardly extending planar flange. Each bag includes an upper edge defining an open top and includes a closed bottom that extends downward through a central opening of a toilet seat. A closed bottom of each bag includes an impervious outer layer, a permeable inner layer, and an absorbent layer having sodium polyacrylate crystals sandwiched between absorbent cellulosic fibrous material. Each bag includes a flexible tab removably attached to a next lower bag or to the base flange, each tab having a perforated construction such that a selected bag may be torn away after use.

Abstract: A headerless pack of thermoplastic film bags having weak bag to bag seals to make said pack and a teardrop like shaped supporting opening whereby said pack is supported on a dispenser rod through said opening and a single bag can easily be removed by pulling down on said bag thereby breaking said seals and tearing through said opening.

Abstract: Stack consisting of a multiplicity of bags which are connected to one another and are made of plastic film, in particular vending machine bags, and also process and apparatus for producing and filling bags of this type The invention concerns a stack consisting of a multiplicity of bags which are connected to one another and are made of plastic film, in particular vending machine bags, and also a process and apparatus for producing and filling bags of this type which, for the purpose of simple production and handling when filling with a product, such as, for example, a loaf of bread or the like, have perforation lines (9, 9′) which run at an angle with respect to the filling opening (6) in order to form corner sections (11) with interconnecting points (12) provided in them, and which, when filling, can be severed cleanly from the bag stack and taken for packaging with a nice-looking exterior.

Abstract: In the process of die-cutting bag stacks to form individual bag tops, die-cut handle apertures, or other mounting apertures, die blade configurations forming the vent lines of an array of vent apertures are also used to bond the outer surfaces of the front and rear bag walls together. The die-cutting operation selectively bonds the successive front and rear bag walls together at or adjacent the cut edges of the vent lines, thereby allowing the bags in a bag stack to subsequently self-open when dispensed.

Abstract: A manufacturing method for plastic bags recombines a layer of plastic to the outside surface of the bag to provide a portion of the outside surface with a lower melting point than the inside surface of the bag. The bags are arranged in stacks and heat is applied to bond the low melting point layer. A relatively weak bond is formed between adjacent outside bag surfaces while the bag inside surfaces remain free of each other. The weak bond is positioned along the median of the bag and near the bag opening. A second bag is drawn open by the bond during retrieval of a first bag. A flexible separation tab is arranged to maintain the separation between the inside surfaces of the open bag. The separation tab may also be made conspicuous to present an obvious retrieval point for the top bag in a hanging bag dispensing arrangement.