Abstract: A flexible shipping bag is comprised of at least one panel having edges. The panel is formed of weft and warp filaments and has a central region of predetermined full thickness and a selvage forming at least one of the respective edges and of a lesser thickness. The warp filaments in the central region are thicker than the warp filaments in the selvage.

Abstract: A fluid containing bag according to the invention includes a bag main body which is constituted by front and rear two sheets and an entire periphery of which is hermetically sealed except one portion, an inlet/outlet spout one end side of which is connected to the one portion and other end side of which is extended to outside of the bag main body, means for closing an inlet/outlet port of the inlet/outlet spout, and a reinforcing tape attached to a portion or an entire periphery of an inner peripheral face of the bag main body connecting side base portion of the inlet/outlet spout.

Abstract: A bag for storing and preparing food, includes a bag body including two sheets having edge regions and being sealed together at least partially along a plurality of the edge regions to present edge seals and a bag opening at one end of the bag. Each sheet comprises a composite material including a plastic inside layer suitable for making contact with the food and an outside layer of paper or metal foil.

Abstract: A packaging container, including a flexible plastic wall with a region between an interior wall and exterior wall, the region being defined by at least one sealed or glued seam which is in at least a partial region selectively permeable to gas and has a reduced degree of bonding before sealing or gluing over at least said partial region. The region is formed by an overlap of a flat plastic web. The overlap is arranged between the two outer edges of the flat film. The at least one glued or sealed seam includes one or both of longitudinal seams. The interior wall includes at least one opening having a size sufficient to allow gas to escape from an interior portion of the container and to enter into the region between the interior and exterior walls. The at least one opening is located at a spaced distance from the at least one sealed or glued seam. At least one spacer is located between the at least one opening and the at least one sealed or glued seam.

Abstract: Provided are an epoxy resin curing agent having excellent properties and high gas barrier capability that epoxy resin has and, in addition thereto, capable of realizing good adhesiveness to polyester and aluminium; an epoxy resin composition containing the curing agent; an adhesive for lamination including the composition as the main ingredient thereof; and a laminate film, a multilayer wrapping material and a wrapping bag using the adhesive. The epoxy resin curing agent comprises a reaction product of the following (A), (B) and (C): (A) meta-xylylenediamine or para-xylylenediamine, (B) a polyfunctional compound having one acyl group and capable of forming an amide group moiety through reaction with a polyamine and forming an oligomer, (C) a metal (meth)acrylate salt with a divalent or more polyvalent metal.

Abstract: An epoxy resin curing agent which provides good adhesiveness to polyester in addition to excellent performance and high gas-barrier properties of epoxy resins, an epoxy resin composition containing the epoxy resin curing agent, an adhesive for laminating which mainly contains the composition, a laminate film obtained by using the adhesive, a multi-layer packaging material, and a packaging bag. The epoxy resin curing agent is a reaction product of (A) m-xylylenediamine or p-xylylenediamine, (B) a polyfunctional compound having one acyl group, which forms amide linkage by a reaction with polyamine and is capable of forming an oligomer; and (C) an aromatic dicarboxylic acid, an ester thereof, an amide thereof, an acid anhydride thereof, or an acid chloride thereof.

Abstract: The present invention relates to generating a film suitable for medical packaging. The film is generated by blown film co-extrusion to form a multi-layer film which has a heat resistant layer, a barrier layer and a heat seal layer. The barrier layer includes a high barrier resin and a branched co-polymer. The high barrier resin has a density of at least 0.963 g/cm3. The barrier layer includes between 25% and 85% high barrier resin. The heat resistant layer may be comprised of polymers, papers and other materials. The heat seal layer, in some embodiments, comprises any of high density polyethylene and medium density polyethylene, or a combination thereof. In some embodiments, an additional laminate layer may be affixed to the heat resistant layer of the multi-layer film. The final film is between 3.0 and 3.8 mils in thickness, and has a moisture vapor transmission rate of less than 0.08.

Abstract: Airtight compressible storage containers (e.g., pouches) having one-way valves in the form of respective collapsible channels that run along and adjacent to respective pouch side seals. Each collapsible channel comprises unsealed sections of web material that span the space between a respective side seal and a respective interior seal. Each collapsible channel communicates with a respective air inlet located in the interior volume of the pouch and a respective air outlet located on a periphery of the pouch. When the contents of the pouch are compressed by a user pushing down on pouch, air from the storage chamber containing the compressible contents can be forced into the air inlet, through the open channel and out the air outlet until the desired amount of air has been removed from the pouch.

Abstract: A package (1, 1?) in flexible material for liquid, pasty products or the like, closed above by a linear head weld (7) which joins two opposed walls (4, 5), at which a pair of opposed welds (10, 11) is provided, in proximity of at least one upper corner (8) of the package, these opposed welds (10, 11) tending to meet at the centre line of the package and determining a flattening of the corresponding upper corner (8).

Abstract: A trifold side seamed film produce bag includes a front wall and a back wall, first and second side edges sealed together and a seamless bag bottom. The bag is joined at the side edges to additional bags by a perforation. The bag is corona treated on at least one wall and promotional material is printed on the treated surface. The bags are folded to one third of their height to fit compact bag roll dispensers. The bags are folded in a Z-fold or C-fold configuration. The method includes manufacturing the bags and winding them onto cores or forming the bags into coreless rolls. An apparatus for forming the side seamed bags includes an extruder, a tubing flattener, a perforator, a sealer, a corona treater, a printer and a slitter. The treated, printed bags may be stored on rolls for later slitting into two bag streams and folding into thirds.

Abstract: A container liner comprises at least one sheet bounded along portions thereof to form at least one peripheral seam, with the at least one sheet including a first fluoropolymer layer, a barrier film layer, and a third layer bonded along at least peripheral portions thereof. Any of such layers may be peripherally bonded to form a gap or pocket therebetween, or bonded along substantially entire major surfaces thereof. Surface modification may be employed to facilitate bonding of materials having otherwise dissimilar surface energies. The resulting liner is adapted for storing and dispensing high purity chemical reagents, e.g., by placing the liner in an overpack, and applying pressurizing gas to a space between the liner and the overpack for progressive compaction of the liner to dispense its contents.

Abstract: A plastic bag includes a plastic bag body with 4-layer gussets on two sides and 2-layer film in the middle. The plastic bag body is provided with a curved hot-seal line near a bottom edge of the bag body. The curved hot seal line turns upward on two sides and is recessed in the middle. Since plastic bags with the structure referred to herein eliminate a stress concentration at a bottom hot-seal location, such plastic bags have increased load-bearing capacity.

Abstract: A self standing bag having two side wall sheets and a bottom sheet. To flatten the bag, the bottom sheet is sandwiched between the two side wall sheets and symmetrically folded along a line parallel to its bottom edge, separating the bag into a four-layer part and a two-layer part. In the two-layer part, the bag includes first sloped sealing lines extending between a first two points on the top edges of the side wall sheets and spaced from the vertical side wall edges by a first distance, to a second two points spaced from the vertical edges of the side wall sheets by a second distance less than the first distance. The four-layer part includes second sloped sealing lines extending between the second two points and a third two points on the bottom edges of the side wall sheets.

Abstract: A multiple chamber medical fluid bag includes: (i) a flexible enclosure; (ii) a first fluid chamber formed in the enclosure; (iii) a second fluid chamber formed in the enclosure; (iv) the first fluid chamber and the second fluid chamber separated by a frangible seal; and (v) an access port connected to the enclosure, the port imbedded into the enclosure so as to completely surround the access port, the enclosure further configured such that the frangible seal is broken to uncover the access port.

Abstract: One embodiment of the present disclosure provides a shielding apparatus including a double-lined container having an outer pocket and an inner pocket mounted within the outer pocket. The inner and outer pockets each form an enclosure having a continuous closed edge interrupted by an opening. The continuous closed edge of the outer pocket is adjacent the continuous closed edge of the inner pocket, and the opening of the outer pocket is adjacent the opening of the inner pocket. The adjacent openings are interconnected and include a device for simultaneously opening and closing the interconnected adjacent openings. A first plurality of stitches and folds are included in the continuous closed edge of the inner pocket and a second plurality of stitches and folds are included in the continuous closed edge of the outer pocket.

Abstract: A container including a support structure defined by a side wall portion and a bottom wall portion. An upper portion is integrally attached to the support structure, where the upper portion is formed of a flexible material defining opposing portions. The flexible material has a lower stiffness than a stiffness of the side wall portion, and the opposing portions are movable between a closed position located in engagement with each other and an open position where the opposing portions are separated from each other defining an opening to an interior area of the container. A frangible portion is provided on the upper portion forming a predefined separation line for separating at least a portion of the upper portion from the support structure.

Abstract: Multi-layered bags include an outer layer or bag and an inner layer or bag that is shorter than the outer layer or bag. The shortened inner layer or bag can stretch or expand to the outer layer or bag when loaded with objects or otherwise strained. Such multi-layered bags can allow for a reduction in thermoplastic material without compromising the strength of the multi-layered bag. In various implementations, the inner layer or bag may be non-continuously laminated, continuously laminated, or joined only along one or more edges to the outer layer or bag. Implementations including non-continuous bonds securing the inner layer or bag to the outer layer or bag can provide additional strength to the bag. Methods of forming multi-layered bags with a shortened inner layer including inserting an inner layer within an outer layer and then joining the layers to form a bag.

Abstract: The self-standing bag comprises a package for accommodating a content, a port provided in the center of the top portion of the package, and reinforcing members formed of a thermoplastic resin which cover the outer faces of both side edges of the package. The lower end portion of the reinforcing member is located above the bottom edge of the package. The lower end portion of the reinforcing member is projected inward of a lower cutout.

Abstract: In order to provide a medical liquid container which allows for no forgetful failure to open the partition wall and can realize simple and easy sterilization of the liquid medicament bag and thereby decrease the production cost, the present invention provides a medical liquid container having a plurality of communicatably partitioned medical liquid-housing chambers and a discharge reserve chamber having formed therein a discharge port for a liquid medicament, the medical liquid container comprising liquidtightly partitioning portion for liquidtightly separating said liquid medicament-housing chambers from each other, and non-liquidtightly partitioning portion for non-liquidtightly separating between at least one of said liquid medicament-housing chambers and said discharge reserve chamber.

Abstract: A filling-packaging body formed to have both such a durability that can withstand a large amount of filled material filled therein and easily unsealing property. The filling-packaging body (1) is formed by filling the filled material in a three-side seal bag having an overlapped part formed by cylindrically curving a laminated film (10) and overlapping both side edge parts of the laminated film, a plurality of vertical seal parts (2a) and (2b) (two seal parts are shown) formed at the overlapped part roughly parallel with each other in such a state that a band-like non-seal part (5) is left at the tip side of the outer surface side-edge part of the overlapped part, and lateral seal parts (3) and (4) formed to cross the longitudinal both end parts of the vertical seal parts (2a) and (2b). The laminated film (10) is formed by interposing a base material layer (12) for imparting strength to the film between an inner layer (11) and an outer layer (13) which are seal layers formed of a low density polyethylene.

Abstract: The Adaptable Gift Bag is a bag made of relatively opaque, stretchy material, not paper or netting, so that it can fit over various sizes and shapes of gift items and present a smooth, attractive appearance. The Adaptable Gift Bag is typically made of a single sheet of material folded over and sewn along one or two sides so that it has one open end, but in alternate embodiments it could have two open ends. The open end can be closed around the gift by gathering and tying with traditional ribbon or cord, by attaching a drawstring, or alternatively can be twisted and stretched back over the gift for a unique finished appearance. The Adaptable Gift Bag may be lined (e.g., with a different material), may include a zipper for easier removal from the gift item, and/or may include strategically placed elastic bands in its interior for a better fit (esp. at the corners). Using a shimmery, sparkly, or iridescent material provides a festive appearance for the finished gift.

Abstract: The disclosure relates to a connector for packaging containing medical fluids, in particular infusion or transfusion bags, including a tubular connection part for receiving a spike for the withdrawal of fluid, and having a lower opening on the packaging side and an upper opening on the connection side. A self-sealing membrane, which is pierced by the spike, is located in the connection part. The membrane has an upper, annular section leading into a lower, plate-shaped section, said annular section of the membrane surrounding the spike in a sealing manner, when the latter pierces the plate-shaped section. The membrane acts as a guide for the spike and also reseals the connector, once the spike has been removed.

Abstract: A multilayer bag includes at least one outer paper layer and at least one inner paper layer and a synthetic layer located between the outer and an inner paper layer. On the longitudinal side of the paper bag, an overlap of the outer paper web and a partial overlap of the synthetic web is provided, and the outer paper web is partially adhered to itself in the region of overlap.

Abstract: An elastic substantially tubular package for a semi-liquid or pasty extractable by a finger pressure product comprises a skirt, a head and optionally a cap. The skirt is formed from a wound foil and is provided with a longitudinal weld seam formed by the overlapping of the edges thereof, and the head is fixed to the circumference of the skirt end and forms an oval cross-section at the level of the skirt fixing area. The end of the longitudinal weld seam contacting the head is located in or near an area where the radius of curvature of the oval cross-section is minimal.

Abstract: A packaging container has walls made of film defining an interior of the packaging container. At least a first one of the walls has two wall parts that overlap one another forming an inwardly positioned overlapping strip and an outwardly positioned overlapping strip and providing an intermediately positioned venting passage. The overlapping strips are connected to one another by a securing seam that extends along an edge of the inwardly positioned overlapping strip. The venting passage communicates through inner openings with the interior and through outer openings with the ambient. The outwardly positioned overlapping strip has no openings. At least one filter is provided with the outer openings of the venting passage and is positioned underneath the outwardly positioned overlapping strip in a flat arrangement.

Abstract: A waste collection system having a bag assembly, and a method for removing waste material from a waterline using the system is provided. The bag assembly includes a plurality of inner bags nested within each other to collectively form a multi-layered sidewall. The bag assembly includes at least two connectors, each connector having a first end projecting inwardly through the sidewall for attaching the bags to each other and a second end opposite the first end. A container having an inlet port and an outlet port is provided. The second end of each connector is connected to one of the ports for facilitating fluid communication through the container, wherein waste material separates from the fluid within the container and remains within an innermost bag. The innermost bag and waste material contained therein is removed from the container without disconnecting the connectors from the ports.

Abstract: The invention comprises using a fabric cut into several pieces which are further assembled together by stitches, the stitches being made using a sewing machine comprising at least two needles (A?, B?) operating in-line one behind the other so that the sewing stitch of the second needle (B?) is made on the threads of the sewing stitch made by the first needle (A?) in order to cover the perforation made by the first needle and so that the perforation made by the second needle (B?) is made through said thread (11), thereby filling said perforation with said thread (11).

Abstract: The invention relates to a flexible package (1) formed by a wrapped material having a first longitudinal joint (4) comprising two longitudinal edge portions of the wrapped material. The package (1) also has a first and a second transverse joint (5, 6), each comprising a transversal edge portion of the wrapped material. The package (1) comprises a pocket defined by said wrapped material, an openable flap (11) defined by an indication (10) and a label (12) fixed to the openable flap (11) and provided with a tab (14) for opening the package (1) along the indication (10). The package (1) is characterised by a first and a second longitudinal stiffener (3) being formed by said wrapped material and that said label (12) is adhesively fixed to at least one of said first and second longitudinal stiffeners (3). The invention also relates to a method of producing such package.

Abstract: A collapsible rectilinear or cylindrical ice bucket for transporting, displaying and chilling a wine bottle or other beverage container is fabricated from a deformable, water-impermeable and polymeric material, and is dimensioned to receive the bottle and a sufficient quantity of crushed ice or ice cubes. The upper edges of the collapsible ice bucket have a double thickness of the material for retaining the opening in a substantially non-collapsed state during use, and is provided with a handle.

Abstract: Unit dose packages for transdermal therapeutic systems or film- or sheet-type dosage forms in the form of a peel-open side-sealed bag. The side-sealed bags comprise two packaging material elements arranged one upon the other. At least one consists of a tear-resistant packaging material having a low tear propagation resistance. The two packaging material elements, which are joined together by a continuous sealed seam extending around the packaged good have a tab at one end of said side-sealed bag which projects beyond the sealed margin. The tabs are half as wide as the side-sealed bag and, at the end thereof which faces away from the sealed margin, have a sealed region in which they are joined to each other. At least one of the packaging material elements has a structure for partial tearing of the packaging material in the region of the tab in which the tabs are not sealed to each other. The structure for partial tearing of the packaging material is without contact to the edge of the package.

Abstract: A container evacuation system is provided for viscous flowable materials such as grease, paste or flowable powders. The container system includes a lightweight, rigid exterior, such as a cardboard container. Provided within the container is a flexible containment system constructed of polyethylene sheets or the like. The flexible containment system is provided with a plurality of weldments to create at least two pockets, wherein one pocket contains the flowable material and a second pocket is available to be filled with air, to allow air provided to the second pocket to force the flowable material from the first pocket out through a drain. The system includes a weldment which curves around at least a portion of the drain to crease a funnel which focuses flowable material toward the drain, while reducing the likelihood of a portion of the flexible containment system from obstructing the movement of flowable material out of the first pocket through the drain.

Abstract: Microwavable bags can include one or more seals formed by a cold seal adhesive. The one or more seals can prevent egress of liquid oil from the bag.

Abstract: The invention relates to a flexible packaging container that is made of plastic, wherein a region comprising an interior wall and an exterior wall is formed by means of sealed or glued seams. The interior wall is provided with one or more openings which allow gas to escape from the interior region of the container and to enter into the region between the interior and exterior walls, and the sealed or glued seams enclosing said region are, at least in a partial region, formed such that they allow gas to escape.

Abstract: A geotextile tube is provided. The geotextile tube includes a first sheet and second sheet that both have first portions with a first weave pattern and second portions with a second weave pattern. The first portion of the first sheet covers a larger surface area than the second portion of the first sheet. Likewise, the first portion of the second sheet covers a larger surface area than the second portion of the second sheet. A seam contacts and attaches the second portion of the first sheet to the second portion of the second sheet.

Abstract: Contour of a storage section of a three-sided bag is formed of (1) two side inner lines in a longitudinal direction, (2) two tilt inner lines which tilt inside with forming an obtuse angle with each side inner line from a lower end of each side inner line, and (3) one lower side inner line in a lateral direction which connects lower ends of respective tilt inner lines. A longitudinal size “a” of an intersection IPa of the side inner line and tilt inner line on the basis of an intersection BP of a side outer line or its extension, and a lower side outer line or its extension is preferably within a range of 0.08A to 0.71A, and a lateral size “b” of an intersection IPb of the tilt inner line and lower side inner line on the basis of an intersection BP is preferably within a range of 0.12B to 0.48B.

Abstract: A combination product/napkin package is provided. The combination package includes a product wrapper and a napkin. The product wrapper comprises a sheet of flexible film that is foldable around the product and has edges sealable around a periphery to enclose and seal the product therein. The napkin is affixed to the wrapper at a position outside the sealed product.

Abstract: A multi-substrate sheet for forming an at least partially open mesh fabric bag using a form, fill and seal machine and a bag formed of this sheet are provided. The sheet includes at least one strip formed of an open mesh polymeric fabric and at least one strip formed of a polymeric film. The fabric and film strips are secured to one another to form a web that can be formed into a roll and utilized with a form, fill and seal machine. The bag resulting from the processing of the web by the machine includes a substantial open mesh fabric portion to provide adequate ventilation to the product positioned within the bag and a printable film portion.

Abstract: The disclosure relates to a connector for packaging containing medical fluids, in particular infusion or transfusion bags, including a tubular connection part for receiving a spike for the withdrawal of fluid, and having a lower opening on the packaging side and an upper opening on the connection side. A self-sealing membrane, which is pierced by the spike, is located in the connection part. The membrane has an upper, annular section leading into a lower, plate-shaped section, said annular section of the membrane surrounding the spike in a sealing manner, when the latter pierces the plate-shaped section. The membrane acts as a guide for the spike and also reseals the connector, once the spike has been removed.

Abstract: A rectangular cushion bag formed from a two-dimensional flat pouch, wherein select portions of the cushion bag comprise a differential rigidity to facilitate transforming the flat pouch into a box-like configuration. The differential rigidity may be created by compromising the bottom corners, strengthening portions of the sealed side edges, weakening portions of the sealed side edges, or any combination thereof. An automated method of creating the cushion bag is also disclosed. In use, the applying a downward force on the bag causes weaker portions of the bag to give way causing the two-dimensional flat pouch to open into a three-dimensional rectangular cushion bag.

Abstract: A combination product/napkin package is provided. A package includes a product wrapper and a finger wiping patch. The product wrapper comprises a sheet of flexible film that is foldable around the product and has edges sealable around a periphery to enclose and seal the product therein. The finger wiping patch is a textured surface of foaming ink absorbent resin, tacky resin, or a textured material applied to the wrapper at a position outside the sealed product.

Abstract: The present invention relates to polymeric bags, particularly polymeric drawstring trash bags. The present invention comprises a trash bag having an elastic drawstring. The elastic drawstring trash bag features a short seal and an inner seal at each upper corner of the drawstring trash bag. The short seal and inner seal are separated by a small unsealed area. The inner seal serves to reduce the upper opening of the drawstring trash bag, while the elastic drawstring utilized with the bag provides a bag that allows the bag to fit snugly on many common trash receptacles.

Abstract: An enteral feeding device, includes a system for delivering liquid nutrients to an enteral feeding tube. The device includes: (a) a container, having first, second and third openings; (b) a tip configured to be coupled to the container, the tip having an opening in fluid communication with the first opening of the container, the second opening of the container configured such that nutrient can be delivered to the second opening and the third opening configured to receive nutrient or to allow gas expelled from the patient (e.g., through burping) to flow there through.

Abstract: A sheet of material in a generally rectangular configuration has first and second side edges and first and second end edges. The first and second end edges define an opening. A fold between the end edges forms panels with a chamber formed between the panels. Coupling components couple the panels of the sheet to form a pouch. A fastener separably couples the first and second end edges.

Abstract: A sleeve and method for making the same for use in packaging consumer goods comprising a plastic film having a first longitudinal edge and a second longitudinal edge is disclosed. The plastic film is rolled into a tube wherein the first longitudinal edge overlaps the second longitudinal edge defining a flap. A plurality of seaming beads are applied along the first longitudinal edge to seam the first longitudinal edge to the second longitudinal edge, the plurality of seaming beads including an inner seaming bead and an outer seaming bead to form a plurality of seams in the sleeve. In exemplary embodiments, the plurality of seaming beads are utilized with different adhesive solutions. Other embodiments include, but are not limited to a perforation strip between the at least two seaming solutions.

Abstract: A pillow packaging bag, a pillow type packaging body, a heat seal bar for pillow packaging machine, and a pillow packaging machine. The pillow packaging bag enabling the suppression of the occurrence of pin holes in a handling step and a transportation course after packaging comprises two lateral seal parts positioned roughly parallel with each other and a contents filling part held by the two lateral seal parts. Damping portions connected to the contents filling portion are formed near both side end parts of the lateral seal part from the border line thereof with the contents filling part near the center part of the lateral seal part toward the lateral seal part.

Abstract: The container bag includes a bag body and a resealable lock. The bag body includes a first layer and a second layer overlapped therewith, and defines a plurality of sealing pockets discretely provided between the first and second layers and a plurality of elongated sealing openings communicating with said sealing pockets respectively. The resealable lock includes a plurality of zip lockers provided at the sealing openings respectively to seal and enclose the sealing pockets, wherein each of the zip lockers is individually actuated to unsealed and open the sealing pocket so as to permit each of the sealing pockets being reclosably sealed in a reusable manner.

Abstract: A flexible pouch for packaging a product, such as a carbonated beverage, is provided that includes a front panel and a back panel each having an upper edge, a lower edge opposite the upper edge, and side edges extending therebetween the upper and lower edges. The pouch includes a first closing seal extending along an upper edge of the joined front and back panel formed a predetermined length from the open edge so that there is no dead space inside the pouch between the product and the first closing seal and a second closing seal outside the first closing seal, to form a pocket trapping some of the product between the first closing seal and the second closing seal. A method of forming and filling the pouch includes the steps of forming each panel and joining two panels by scaling together the side edges and lower edge. The method also includes the steps of opening the pouch and filling the pouch with the product.

Abstract: A bag formed of a sheet material adapted to be filled with contents and opened at the top for taking out the contents. The bag has fused joints along the lateral edges thereof. A plastically deformable wire-like member is attached inside the fused joints over a length from the output opening side portion to the body portion.

Abstract: A packaging bag (1) where the heat sealing parts of packaging materials (2, 3) having a printed light shielding layer (14) in the layer structure are overlapped and heat sealed, and a sealing state confirming part (8) having a light transmittance higher than that of the other sealing side is provided across one sealing side (11) out of both sealing sides facing each other when the heat sealing parts are overlapped. Visual confirmation of incomplete heat sealing part can thereby be facilitated.

Abstract: The bag has a trapezoidal shape including a pair of parallel edges opposite each other with one longer than the other and a pair of opposite diverging edges. One edge of the bag is defined by a fold to close off an opening providing access into the bag. Other edges of the bag are formed by a seam joining two opposite layers of flexible material together. The opening is preferably provided on a flap which extends beyond the trapezoidal perimeter of the bag. When this flap is folded over, the final trapezoidal shape for the bag is provided. Walls are built utilizing a plurality of such trapezoidally shaped sandbags in alternating parallel orientations for the long edges and short edges of adjacent bags. Joints between adjacent sandbags are longer than with rectangular sandbags and interlock together somewhat.