Abstract: The present invention relates to a packaging bag. The packaging bag includes a bag body member. The bag body member has a double-layered structure which is formed by an inner sheet and an outer sheet, whereby toughness of the packaging bag is improved. A carrying handle member is attached to an upper end of the bag body member to enable easy carrying and handling of the packaging bag. A zipper or zippers are installed on an upper end and/or a lower end of the packaging bag, whereby the packaging bag can be rapidly and easily opened and closed.

Abstract: A vented bag includes a length of tubular gas-impervious material sealed to closure at at least one end thereof by a plurality of spaced apart seal lines each including a discontinuity proximate one end thereof. The discontinuities in adjacent ones of the seal lines are disposed proximate opposite ends of the lines so that the discontinuities, the lines and the adjoining material form a tortuous channel providing communication between the interior of the bag and the exterior of the bag.

Abstract: A seam configuration for a flexible container and a method for forming the seam configuration. The seam configuration includes a first hem having a first hem outer surface, a second hem having a second hem outer surface, and a primary seam which is formed by fusing together the first hem outer surface and the second hem outer surface. The method includes the steps of forming a first fold to create the first hem, forming a second fold to create the second hem, positioning the first hem outer surface and the second hem outer surface so that they are contiguous, and then fusing together the first hem outer surface and the second hem outer surface to form the primary seam.

Abstract: The invention relates to a sack from a flexible material, such as paper and/or plastic material, which sack is provided with a longitudinal closing seam and/or a transverse closing seam, which connects to each other layers of material that lie on each other. According to the invention the closing seam is formed by attaching to each other the layers of material that lie on each other by plastic deformation of a part of said layers, without adding an adhesive such as glue and without adding heating energy. The invention also relates to a method for forming such a sack.

Abstract: The present invention provides an improved side-sealed bag comprising an open, mesh-like fabric and a label section. The bag has a closed end formed by a fold in the fabric, an opposing end and longitudinal, heat-sealed side seams extending from the closed end to the opposing end. The bags are used for packaging articles for which visibility and/or breathability of the bag fabric are useful characteristics. In a preferred embodiment, the bags are also suited for manufacture and filling using high speed, automated equipment.

Abstract: A package and a process is provided for packaging a perishable product and providing a tamperproof visible date code on the resultant package. The process includes the steps of providing form, fill and seal package making process equipment; and providing to that equipment a supply of plastic film in strip form having opposed first and second lateral edges and a thermally sealable side. A date code is printed adjacent to the first edge on the sealable side. The film is then conveyed through a folding device to cause the printed date code to be overlaid by the opposite or second lateral edge of the plastic film. The lateral edges of the film are then thermally sealed together with the second edge overlying the imprinted area thereby forming a tube. The tube is then formed into a series of individual packages which are filled with the perishable product.

Abstract: A collapsible boot storage tote bag for a convertible top boot cover. The boot storage bag is particularly configured to protectively store a flexible boot cover. Likewise, the boot storage bag is a compact easily managed package that is particularly configured to minimize the consumption of limited storage space. The boot storage bag has a tailored elongated rectangular shape that easily constrains the convertible boot cover when it is folded and placed inside. The elongated rectangular shape is closed at one end and closable at the other by a fold-over flap equipped with hook and loop fastening strips. The open end is further secured with two secondary dirt/dust guard flaps that fold under the main fold-over flap. A convenient carrying handle is centrally anchored on the top wall for balanced single handed means of transport.

Abstract: A sheet element is provided for the formation of bags for packing food products and not under vacuum. The layer or film (12) intended to form the inner surface of at least one side of the bag has seams (13, 23) which are facing not in parallel to the longitudinal axis of the bag and each having a plurality of transverse cavities or notches (16) and at least one longitudinal groove to promote the evacuation of air.

Abstract: A pleated neckdown bag for lining a receptacle is disclosed wherein the bag is made of a flexible plastic film. The disclosed bag has one or more pleat portions (18) fixed at points around the mouth portion (26) of the bag to reduce the circumference of the mouth portion relative to the circumference of the body portion (14). The reduced circumference mouth portion of the neckdown bag can be fitted over a supporting receptacle. The top portion (12) of the bag is thereby more securely held to the support, and the mouth portion is more securely held in an open state, since the narrowed mouth portion of the bag can better engage a support such as the rim of a waste bin. Bag embodiments having flat and flat rectangular constructions, convenient for manufacture, storage, shipping, and dispensing, are also disclosed. Also disclosed is a tabbed neckdown bag embodiment with a tab (52) modifying means to advantageously modify stress and strain at and near the conjunction of a seam and mouth portion of a neckdown bag.

Abstract: A multilayered film (220) suitable for medical uses is coextruded in a machine direction and comprises a first layer (222) defining a pair of peripheral edges (225,227) extending in a direction parallel to the machine direction. The film has a second layer (224) adhered to the first layer (222). The second layer (224) is positioned within the peripheral edges (225,227) defining a stripe (223).

Abstract: The present invention provides an improved open mesh bag comprising an open, mesh-like fabric. The bag has a closed end formed by a fold in the fabric, an opposing end and longitudinal, heat-sealed side seams extending from the closed end to the opposing end. The bags are used for packaging articles for which visibility and/or breathability of the bag fabric are useful characteristics. In a preferred embodiment, the bags are also suited for manufacture and filling using high speed, automated equipment.

Abstract: The present invention provides an improved open mesh bag comprising an open, mesh-like fabric. The bag has a closed end formed by a fold in the fabric, an opposing end and longitudinal, heat-sealed side seams extending from the closed end to the opposing end. The bags are used for packaging articles for which visibility and/or breathability of the bag fabric are useful characteristics. In a preferred embodiment, the bags are also suited for manufacture and filling using high speed, automated equipment.

Abstract: Apparatus for heat-sealing polymer films which shrink when heated include provision for moving the zone of application of heat and pressure during the heat sealing process. This allows for shrinking of the polymer film in a region adjacent to the heat seal so that the film thickens and is more resistant to failure in use through peeling. The apparatus includes a pair of sealing bars (4, 5) one of which (4) is wedge-shaped and the other of which (5) is flat. Both bars are heated and one of them can be moved in direction (12) to apply pressure to film located between the bars. At the beginning of the heat sealing step pressure is applied over an initial zone along the apex of the wedge. Subsequently the bare (4) is rolled around an axis located near to the apex of the wedge, in the direction shown by the right hand end of arrow (13), to apply heat and pressure over a wider zone located adjacent to the initial zone.

Abstract: The collapsible container is formed by joining plural sheets of laminated films by thermal fusion or otherwise, and the collapsible container is provided with a corrugated edge structure at least in part at the edge of the outer peripheral portion at which the plural sheets of laminated films are joined together. The provision of the corrugated edge structure at the edge of the outer peripheral edge portion of the container can prevent the hand holding the container from being cut and hurt even if the hand would slip along the outer peripheral portion thereof.

Abstract: An ice cube bag comprises two sheet-shaped foil layers (12, 14; 12′, 14′) defining an outer periphery. A peripheral joint (20, 21, 21a, 21b) extends along the major part of the outer periphery of the foil layers, with the exception of a peripheral area constituting an inlet aperture of the bag (10). Their peripheral joint joins the foil layers together defining an inner chamber which is divided into several ice cube compartments defined by separate joints (22, 23, 24, 25, 29) of the foil layers. An inlet channel extends from the inlet aperture to the inner chamber of the bag hereby allowing admission from the surroundings to the inner chamber of the bag through the inlet channel.

Abstract: A sealable bag for storing merchandise includes a body having a pocket that is adapted to receive the merchandise. The pocket has an opening through which merchandise is placed into the pocket. The body has a pair of flanges disposed along the sides of the body. The body has a neck with the opening of the pocket being disposed at the neck of the body. The neck has a sealing area. The bag includes a pair of stress relief notches disposed in the flanges intermediate the sealing area and the opening of the pocket. The stress relief notches prevent the sealing area from becoming wrinkled while the bag is being sealed with automated equipment thus allowing a clean, unwrinkled seal to be formed in the bag.

Abstract: A woven polypropylene fabric flexible intermediate bulk container (“bulk bag”) is formed with a polypropylene lining bonded directly to the material of the fabric, thereby eliminating any possibility of displacement of the lining relative to the bulk bag. An improved discharge chute having an exterior woven polypropylene fabric tube and an interior polypropylene fabric film liver tube may be used in the bulk bag. In a second embodiment, a polypropylene woven fabric tube is positioned around a polypropylene film tube. The tubes are heat sealed circumferentially to each other to form a tubular blank.

Abstract: The present invention provides a system and method for a seal for a sterilizable bag. This seal is made between a first polymeric sheet material (5) and a second polymeric sheet material (3). The first sheet material (5) should be sufficiently porous so as to allow or permit gas or steam sterilization but substantially impervious to bacteria. The second sheet material (3) includes an outer heat sealable layer. The seal (4) is fabricated from a first thermal surface weld (15) between the heat sealable layer of the second sheet material (3) and the first sheet material (5), and a second thermal melt weld (12) between at least the heat sealable layer of the second sheet material (3) and the first sheet material (5). The thermal melt weld (12) may be narrower than the first weld (11) and lying within the boundaries of the first weld (11). Furthermore, seal (4) may be sufficiently flat in order to allow a cross-heat seal using conventional equipment.

Abstract: A recloseable package is disclosed having a front wall and a rear wall. A thermoplastic zipper male base member is disposed at a top end of the first wall and a thermoplastic zipper female base member is disposed at a top end of the second wall. The base members each have a profile which extends transversely across the walls. The profiles are each disposed between a product side web and a consumer side web. A heat resistant barrier is provided on facing surfaces of the male and female product side webs, extending from product side longitudinal edges of the base members toward the associated profiles. The male and female base members are heat sealed to the first and second walls, respectively, opposite to the heat resistant barriers which are resistant to heat sealing to each other. The facing surfaces of the consumer side webs may likewise have heat resistant barrier layers, in which case the package is sealed above the consumer side webs.

Abstract: A transparent multilayer structure is disclosed such as a flexible self-supporting container for a flowable food product such as fruit juice. The transparent multilayer structure possesses superior barrier properties to oxygen, water vapor and aromatic gases. The multilayer structure may include an exterior layer having a metal oxide deposition laminated to an interior layer through use of an adhesive. In one embodiment, the metal oxide is SiOx where x has a value between 1.5 and 2.2 thereby allowing for a transparent multilayer structure. The metal oxide may be deposited on the exterior layer through a number of various methods. An exemplary method is plasma-enhanced chemical vapor deposition. The exterior layer may be composed of a polymer material integrated with a clay mineral between 0.1% and 10% weight of the polymer material. The polymer material may be selected from the group consisting of polyamide, polyethylene terephthalate, copolymers of polyethylene terephthalate and mixtures thereof.

Abstract: The present invention relates to a method of manufacturing packaging bags having lateral bellows, the method being characterized by the fact that it comprises the steps of forming respective cutouts (150, 160) in each of the two lateral, bellows-forming zones of a packaging bag sheet (100) so that the bag has only two thicknesses superposed at the mouth of said bellows, at least over a portion of its width; and heat-sealing (184, 186) the adjacent edges of the sheet to the peripheries of the cutouts (150, 160) to close the bag. The invention also provides apparatus for implementing the method and bags obtained thereby.

Abstract: An insulated shipping container includes a formed body of foamed polymer material. This formed body defines a chamber, an opening from the chamber outwardly to ambient, a transition surface surrounding this opening, and an exterior surface. Preferably, the chamber and exterior surface are both cylindrical prismatic shapes of like configuration so that a uniformly thick wall of insulative foamed polymer material is provided between the chamber and ambient. A single sheet of plastic is integrally bonded to the foamed polymer body such that it faces all of the chamber, the transition surface, and a substantial portion of the exterior surface of the container. In one embodiment of the container the remainder of the exterior surface of the container is faced with a separate sheet of plastic, and the two pieces of plastic cooperate to define an escape slit at which excess foamed polymer material escapes during formation of the container in a fixture.

Abstract: A pleated neckdown bag for lining a receptacle is disclosed wherein the bag is made of a flexible plastic film. The disclosed bag has one or more pleat portions (18) fixed at points around the mouth portion (26) of the bag to reduce the circumference of the mouth portion relative to the circumference of the body portion (14). The reduced circumference mouth portion of the neckdown bag can be fitted over a supporting receptacle. The top portion (12) of the bag is thereby more securely held to the support, and the mouth portion is more securely held in an open state, since the narrowed mouth portion of the bag can better engage a support such as the rim of a waste bin. Bag embodiments having flat and flat rectangular constructions, convenient for manufacture, storage, shipping, and dispensing, are also disclosed. Also disclosed is a tabbed neckdown bag embodiment with a tab (52) modifying means to advantageously modify stress and strain at and near the conjunction of a seam and mouth portion of a neckdown bag.

Abstract: A package fabricated from a flexible sheet material capable of being sealed for closing off the interior of the package from ambient atmosphere is disclosed. The package has two or more side walls and a like number of side seams. The package has an open upper end portion terminating in a free edge. The inner surface of the side walls has a releasably securable adhesive adjacent the upper end portion in a pattern wherein the adhesive does not extend into the area of the side seams, thus increasing the structural integrity of the package.

Abstract: An elongate flexible container, made of a textile fabric and having at least one filling opening. The container is filled with solid material, such as sand or other ground material, for the formation of a body adapted for use as a core or base of a dam, a quay, a bank reinforcement, a jetty or a breakwater, or for filling holes or trenches, or for use at the bed of a waterway, or for the packaging and storage of contaminated material. The container is provided at its upper side with at least one filling opening. The container includes stitching extending in the longitudinal direction of the container and mutually connecting facing edges of the textile fabric.

Abstract: A bag for wrapping food items is formed of a composite material including at least one first layer of cellulose-containing material having a specific weight of from 15 to 40 g/m2 and a second layer having a thickness of from 6 to 20 &mgr;m. The composite material has perforations therein. A ratio of the total area occupied by the perforations to a total surface area of the composite material is from 1/150 to 1/250. The second layer may be formed of polyethylene and may be temperature resistant to an elevated temperature. The composite material may be formed of at least one sheet having edges joined along a seam. The bag may have a window therein formed of transparent or translucent material.

Abstract: A container according to a first embodiment includes a first panel bonded to all but a segment of an opposing second panel wherein the first and the second panels define an interior chamber and wherein the unbonded segments of the first panel and the second panel define a first opening having a maximum area. Present in the first opening is a two-part linear fluid impervious closure constructed of flexible material. The first part is bonded to the first panel segment of the first opening and the second part is bonded to the second panel segment of the first opening. A spout is bonded to at least the first panel to provide fluid communication between the interior chamber and the environment, and to define an orifice having an area less than the maximum area of the first opening. In a preferred embodiment, interlocking fastener strips are used as the closure.

Abstract: A vented bag includes at least one rectangular sheet of substantially gas-impervious material having a top edge, a bottom edge opposite said top edge, and a first side edge folded over an opposite second side edge to form a tube. The tube has a longitudinal seam including at least first and second overlapping sheet portions joined together along a plurality of seal lines extending longitudinally from said top edge of said sheet to said bottom edge of said sheet. The bag is sealed to closure at one end of said tube. Each of the plurality of seal lines includes a discontinuity proximate one of the top and bottom edges of the sheet. The discontinuities in adjacent ones of the seal lines are disposed proximate opposites ones of the top and bottom edges of the sheet such that the plurality of seal lines, the discontinuities, and the first and second overlapping sheet portions form a tortuous channel providing communication between the interior of the bag and the exterior of the bag.

Abstract: A container for use in bulk transporting chemical goods, grains and the like, comprises a sack body in the form of a rectangular parallelepiped prepared from a cylindrical blown film. The container has a feeding end, a discharging end and a ventilating end. Enhanced pressure-resistive strength is obtained by improving the ventilating end-mounted design so as to have a specific shape. In one embodiment, a line slit is formed through the sack body, a cylindrical film is inserted into the slit, and the sack body and the cylindrical film are bonded to each other in line along the periphery of the slit so that the bonded corner spots, of the sack body and the cylindrical film, located at both ends of the slit, has a shape of a convex curve, for example, a circular shape or a ringed shape. This bonded structure makes it possible to deconcentrate pressure applied in using and filling the container without concentrating on the corner spot to prevent generation of pinholes and sack burst of the container.

Abstract: A waterproof bag having three layers, namely inner and outer layers made of a rather durable non-waterproof fabric, and an intermediate layer that is positioned between the inner and outer layers so as to be protected from sharp objects and the like. The bag has an upper circumferencial edge defining a bag opening, and the upper edges of the three bag layers are sewn together. There is a moderately stiff closure belt or strap at the upper portion of the bag. When the bag is to be closed in its waterproof containing position, the belt or strap and the upper portion of the bag is folded over several times, and the outer ends of the belt are brought together to form a loop. This provides a substantially waterproof container. The container is also shown as a containing section of a backpack.

Abstract: Containers (56) are produced from a sheet of flexible sheet material (10) having a sealable inner layer (12). The material is cut to expose the sealable inner layer when the material is folded upon itself so as to form a container having side seams (58) extending past the end walls of the container to prevent breaching and internal tabs (30) to prevent capillary leakage.

Abstract: A storage bag for a pickup truck provides a convenient way for people to use the bed of their pickup truck to store possessions. The storage bag is in the shape of the truck bed. The bag is preferably lightweight and waterproof. The bag is constructed from one piece of nylon to help eliminate seams, which aids in weatherproofing. A zipper extends around the top surface of the bag to aid in the opening, closing, and packing of the bag. There is also a zippered flap on the end so that cargo can be stored or retrieved by opening the hinged gate of the truck bed. The bag optionally has waterproof pockets for smaller items. Grommets are provided on an upper surface of the bag for securing the bag to the truck with rope, bungee cords, or the like. The storage bag stands alone and retains its shape without the aid of the truck. When the storage bag is empty, it is easily collapsed and folded for storage.

Abstract: A free-standing bag made of a heat-sealable or weldable plastic material and used for receiving therein liquids and/or pastes, said bag comprising two side walls connected to each other along their longitudinal edges, a foldable bottom element, which is disposed between said side walls and which serves as a supporting base, being inserted between the bottom transverse edges, whereas in the area of the other ends of said side walls a foldable lid element, which is disposed between said side walls, is inserted, and further comprising a discharge opening. In order to improve the handling characteristics of the free-standing bag when the contents are being poured out and in order to ensure also ease of manufacture, the discharge opening is formed between the upper transverse edge of a side wall and the complementary edge of the lid element.

Abstract: A container (10) suitable for medical uses comprising a first planar member (18), a second planar member (22), a first seam (24) and a second seam (26). The first planar member (18) is of a multi-layered polymeric material and further comprises a first substrate (38) and a first layer (46). The first layer (46) is disposed on a portion of the first substrate (38) to separately define a first overlap area (58) and an adjacent first peripheral flange (62). The second planar member (22) is of a multi-layered polymeric material. The first seam (24) attaches a portion of the first overlap area (58) to the second planar member (22). The second seam (26) is spaced from the first seam (24) and attaches a portion of the first peripheral flange (62) to the second planar member (22).

Abstract: A soft-sided fabric container, which in an open position is parallelepiped-shaped, has opposed side walls, opposed end walls mounted to the side walls at opposed longitudinal ends of the side walls, and a bottom wall opposite an open top of the container. The side wall edges, elongate rigid members mounted thereto. Handle apertures are formed in the side walls adjacent the rigid members. Resilient stiffeners are mounted along longitudinally opposite edges of the side walls from the bottom wall to the rigid members for resiliently urging the side walls each into a generally planar shape.

Abstract: An improved geotextile container of the type for maintaining fill material includes a geotextile fabric configured into a tubular shape and having stitched, multi-layer, flanged seams with the stitched flange disposed inside the container. Due to this construction, outwardly directed forces imparted by the fill material will be directed against the stitching. An embodiment with an outer layer of geotextile material has an inner liner of geotextile material.

Abstract: A pack comprises a horizontal base and vertical side walls formed from a blank. The side walls are joined to each other in planes perpendicular to the base and form stiffening ribs. The side walls are seamlessly joined to the base and the base is seamless. The pack is produced by folding the blank and joining the side walls.

Abstract: A container is disclosed comprising a first sidewall having a first layer and a second layer. The second layer overlaps a portion of the first layer to define an overlap area. A sealing flange extends from the first layer outward of the overlap area. A second sidewall is connected to the first sidewall along the sealing flange to define an inner chamber therebetween. The second sidewall and the sealing flange define a first layered structure having a first number of layers along the sealing flange. The overlap area and the second sidewall define a second layered structure having a second number of layers. The second number of layers is greater than the first number of layers. The container is sealed by positioning peripheral edges of the first and second sidewalls into registration so that the overlap area is substantially centrally disposed over the second sidewall and applying sealing energy to the first number of layers to define a peripheral seam.

Abstract: A foldable and simplified water tank characterized by a cylindrical shape and a side wall formed by a sheet made from synthetic resin, and the stiffness of said sheet, measured in accordance with the measuring method prescribed in Japan Industrial Standard L-1096 is from 100 to 1000. The water tank can be made to stand up by itself by only pouring water into it.

Abstract: A cross-laminated synthetic resin fabric mesh material is formed into wicket-top produce bags for use with automatic bag filling equipment. A longitudinally moving sheet of the mesh is folded and formed into a folded, gusseted tubular web. Laterally spaced holes for wicket pin attachment and slots are formed at selected positions along the length of the moving web according to the desired bag height. A wicket-top attachment is then formed on the web near the wicket pin holes. The web is then cut into bag length sleeves, which are thereafter closed at an opposite end to form the bag.

Abstract: A bag construction includes first and second opposed panel sections. Each of the panel sections have first and second opposite side edges. The panel sections are secured to one another along at least a portion of the first and second opposite side edges by first and second side seals, to define a bag construction interior. The first and second side seals each have an inner edge portion adjacent to the bag construction interior. The first side seal inner edge portion has at least one non-linear edge section extending over a part of the first side seal inner edge portion. The non-linear edge may include an edge with a plurality of spaced inwardly directed projections, or an edge with curved portions, or an undulated edge. The seals may be used in a variety of packaging arrangements, and help to provide an arrangement which will stand upright when filled or at least partially filled with material.

Abstract: The cloth box sleeve (110) and its method of construction are disclosed. The cloth box sleeve (110) is a single piece of fabric (10) having a top edge (971), two side edges (73), (75) and a bottom edge (70). There is a fold line (72) in the center of fabric piece (10) separating the two side edges (73), (75). The fabric piece (10) is folded along the fold line (72). Two quarter sections (77), (79) are cut adjacent both side edges (73), (75) and bottom edge (70). A half section (81) is cut along the bottom edge (70) between the side edges (73), (75) adjacent the fold line (72). There is a first seam (83) fastening the two side edges together and a second seam (85) along bottom edge (80) fastening two halves of the bottom edge together. An opening dimensioned along the top edge to receive a box. The opening has upper and lower flaps (118) and (124) along the top edge (116) with a closure (120), (126) for sealing the cloth box sleeve (110).

Abstract: Sample bags are produced from webs of film material by forming longitudinal seams and longitudinally spaced transverse seams and by filling the bags with a sample product between forming the transverse seams. In order to make the bags easier to handle, the longitudinal seams are thickened so that the thickness of the seams is equal to the thickness of the center of the bag. Thickening is done by rolling or folding the seams or by adding frames or strips of additional material either between or outside the seam or interior portions of the webs. The resulting bags are more easily stacked, handled and inserted into publications for distribution.

Abstract: A form fit liner for a container has a bottom wall and at least one sidewall formed of at least one layer of a flexible material, at least one heat seal joining two adjacent portions of material of the sidewall and extending from the bottom wall towards the upper edge of the liner to define a reduced cross-sectional area lower portion of the liner constructed to be received within the container and an upper liner portion having a greater cross-sectional area than the lower portion constructed to extend out of the container to isolate the container from its contents as the liner is filled and emptied. The upper portion of the liner which extends above the container can surround a fill tube used to dispense a liquid product into the liner of the container to shield the container from the splashing or sloshing of the liquid product as the container is being filled.

Abstract: A plastic, pouch-type package with a recloseable, zipper-like closure and the method of making it in which the mass of the plastic closure is reduced at opposite side edges of the pouch by forming holes passing through the interlocking tongue and groove portions so that the subsequent application of heat and pressure along parting lines at the side edges of the pouch accomplishes fusion and sealing of the closure to the pouch with less time and heat than would otherwise be required.

Abstract: An improved geotextile container of the type for maintaining fill material includes a geotextile fabric configured into a tubular shape and having stitched, multi-layer, flanged seams with the stitched flange disposed inside the container. Due to this construction, outwardly directed forces imparted by the fill material will be directed against the stitching. An embodiment has a helical seam along the length thereof instead of one or more longitudinal straight seams. An alternative container embodiment with a helical seam along the length thereof, has an inner liner of geotextile material having one or more longitudinal straight seams. Another alternative container embodiment with an outer layer of geotextile material having an helical seam along the length thereof, has an inner liner of geotextile material having its own helical seam configured with a different pitch than the helical seam in the outer layer.

Abstract: The invention is a packaging bag for storing contents such as coffee beans and MISO (fermented soybean paste) that breathe and produce gas, which is capable of controlling oxidization of the contents during storage as well as venting the gas produced inside the bag. The body of the packaging bag includes a vent line formed on a part thereof and a synthetic resin film layer provided along the vent line; wherein the film layer contains particles made of a material that does not melt at the melting point of the film layer, and is drawn to be stretched. In the bag thus constructed, fine interstices are formed as ventholes adjacent to each particles in the thickness direction of the film layer so as to allow the gas inside the bag to be vented therethrough, when the bag expands with the gas produced by the contents through their breathing and the pressure inside the bag reaches a certain level.

Abstract: A process of manufacturing a bulk bag begins with a tubular blank of woven polypropylene material which is cut along first transversely extending lines 64 to form the upper edges of lift sleeve portions 76, cut along longitudinally extending lines 66 to form the side edges of the lift sleeve portions 76, and cut along substantially transversely extending lines 68 situated at the midpoint of the lines 66 to form opposed top wall halves 72 and opposed bottom wall halves 74. The top wall halves and the bottom wall halves are then sewn together along sew lines 82 and 84, respectively. Sidewalls 70' are joined to the bottom wall halves 74 along sew lines 86, and the top wall halves 72 are joined to the sidewalls 70' along sew lines 88. The lift sleeve portions 76 may be configured to provide lift sleeve, lift rope, or single point lift construction. The top and bottom walls may be provided with a fill chute and discharge chute, respectively.

Abstract: A process of manufacturing a bulk bag begins with a tubular blank of woven polypropylene material which is cut along a first transversely extending line 64 to form the upper edges of lift sleeve portions 76, cut along longitudinally extending lines 66 to form the side edges of the lift sleeve portions 76, and cut along substantially transversely extending lines 68 situated at the midpoint of the lines 66 to form opposed top wall halves 72 and opposed bottom wall halves 74. The top wall halves and the bottom wall halves are then sewn together along sew lines 82 and 84, respectively. Sidewalls 70' are joined to the bottom wall halves 74 along sew lines 86, and the top wall halves 72 are joined to the sidewalls 70' along sew lines 88. The lift sleeve portions 76 may be configured to provide lift sleeve, lift rope, or single point lift construction. The top and bottom walls may be provided with a fill chute and discharge chute, respectively.

Abstract: A pack comprises a horizontal base and vertical side walls formed from a blank. The side walls are joined to each other in planes perpendicular to the base and form stiffening ribs. The side walls are seamlessly joined to the base and the base is seamless. The pack is produced by folding the blank and joining the side walls.