Abstract: A composite material useful for controlled generation of heat by absorption of microwave energy is disclosed. The material comprises a dielectric substrate, e.g., polyethylene terephthalate film, coated with a mixture of an electrically conductive metal or metal alloy in flake form in a thermoplastic dielectric matrix, e.g., a polyester copolymer. In a preferred embodiment, the coating of flake/thermoplastic is applied so as to yield an isotropic coating with good heating performance reproducibility. The use of circular flakes with flat surfaces and smooth edges contributes substantially to good heating performance reproducibility.

Abstract: A seamless, bone puncture resistant bag is provided that representatively includes a length of lay-flat seamless tubular film folded to a double lay-flat configuration and having all adjacent film surfaces interfacially bonded, respectively, except at one outermost interface. The configuration thus forms a seamless envelope with one face thickened integrally to triple thickness. In a less preferred mode, a similarly reinforced bag is provided but which has either an end-seal or side-seals. Associated methods for making such bags are also provided.

Abstract: A method for producing a serialized bundle of thermoplastic T-shirt grocery bags which serially open upon being dispensed. Specifically, a bag being removed from the serialized bundle of thermoplastic T-shirt grocery bags mounted on a dispensing rack automatically opens an immediately following and trailing bag. The bags of the serialized bundle are coextruded to have at least two layers, an inside layer having a low coefficient of friction and an outside layer having a high coefficient of friction. A relatively low coefficient of friction between two inside layers allows each bag to easily open; a relatively high coefficient of friction between the outside layers allows a leading bag to entrain a trailing bag. Entraining structures are provided into and between the respective bags which permit the bags to be keyed together at their high friction outside layers and separate at their low friction inside layers.

Abstract: A bag suitable for use in a vehicular airbag comprises a seamless bag of integral, unitary, one-piece woven construction. The bag defines a pair of opposed panels of substantial area formed in a plain weave of a first yarn density. A single intermediate margin of slight width joins the peripheries of the opposed panels together, the intermediate margin being formed in a plain interweave of a second yarn density greater than the first yarn density. A single outer margin of substantially greater width than the intermediate margin extends about the periphery of the intermediate margin, the outer margin being formed in a weave looser than the plain interweave. The airbag is made by inverting the bag and positioning inflation means in gaseous communication with the interior of the inverted bag for inflating the inverted bag.

Abstract: A flexible container is formed from a hose-like blank having two diametrically opposite longitudinal slots or holes and at least one intermediate slot or hole. One half of the hose-like blank is inserted through the intermediate slot in such way that one inner sack, one outer sack and at least one integral lifting loop defined by material areas are formed. Two material areas are formed by material sections between the opposite slots and the intermediate slot extending from the outer sack directly into the inner sack. A third material area is formed by a material section between the opposite slots and extending from the outer sack between the first two material area and into the inner sack.

Abstract: A multiple layered device and method of using same for safely and efficiently removing excess fats and oils from fried and grilled foods immediately after cooking, prior to consumption. An outer grease impervious body portion is covered on the inner surface thereof with a grease absorbent material which in turn is overlaid with a foraminous grid which separates the food from the absorbent material while permitting the passage of grease therethrough. The device is disposable in an ecologically acceptable manner.

Abstract: The absorbent package of this invention includes a mono-layer, flexible, nonwoven fibrous web, heat sealed to itself and an absorbent sealed within the fibrous web. The fibrous web is permeable to both gas and water. The fibrous web includes a first phase and a second phase. The first phase includes long cellulosic fibers which comprises from about 65 to about 70% of the overall fibrous web. The second phase includes synthetic and thermoplastic fibers which comprise from about 30 to about 35% of the overall fibrous web. The fibrous web further includes a plurality of pores with tortuously configured pore channels. The pores have a pore size range from a high of about 0.00466 microns to a low of about 0.00099 microns to provide absolute containment of the absorbent within the package.

Abstract: A bag structure having a semirigid drawstring closure which passes through a hollow handle. The semirigid drawstring holds the mouth of the bag open so that articles can be easily deposited. A shoulder strap is attached to the handle. The shoulder strap and handle are provided for carrying as well as suspending the bag. A flexible tubular material partially inverted creates the double wall of the bag and a fold at the bag mouth. The fold contains the drawstring and the handle, and an additional seam is not required to encase the drawstring. The flexible tubular material is preferably a mesh. Mesh provides a strong bottom seam, which is preferably created by lacing a cord through the mesh openings in the four layers of material. Also, the transparency of the mesh enables an optional product tag to be trapped within the double wall of the bag and visible.

Abstract: A bingo bag is formed by quilt material sewed into a hollow container that is open at its upper end. Fabric is stitched to the inner surface of the container to form a plurality of pockets. The quilt material is stiff enough that the bag sits in an upright position making accessible the interior of the bag where bingo-playing accessories are kept.

Abstract: A bag structure includes a tubular bag body closed at one end and at its edges but open at the bag top. A top closure is affixed to the bag body covering the bag top. The bag body includes opposite wall panels which include a opposite outer layers and opposite inner layers, in which the outer layers are formed from a material that is more readily fusible than the material of the inner layers. The top closure includes opposite attachment flanges composed of a material that is more readily fusible to the outer layer than the inner layer. In one specific embodiment, a heated pressure bar is applied to heat seal the attachment flanges of the top closure to the outer layers of the bag body, while the inner layers of the wall panels remain intact and are not fused together. The inner layer material has a fusion temperature higher than the temperature at which the outer layers and top closure attachment flanges fuse.

Abstract: An anti-fogging multilayered film suitable for packaging fresh vegetables and fruits comprising a base layer and at least one surface layer containing an anti-fogging agent, said film having a water vapor transmission of 15 to 200 g/m.sup.2 .multidot.24 hr.multidot.40.degree. C., an oxygen permeability of 3,000 to 35,000 cc/m.sup.2 .multidot.24 hr.multidot.atm.multidot.20.degree. C..multidot.90% RH, and a carbon dioxide permeability of 12,000 to 130,000 cc/m.sup.2 .multidot.24hr.multidot.atm.multidot.20.degree. C..multidot.90% RH, and said anti-fogging surface layer having heat sealing properties. A packaging bag produced from this film is also disclosed.

Abstract: A container bag 10 comprises side walls 12 and a base 14 of flexible material. The side walls are provided with lifting loops 18 and have one or more side seams 16. A circular woven inner lining 22 is provided, preferably attached to the bag at the top thereof. The liner absorbs impulsive forces and enables the bag to meet a drop test standard and additionally helps prevent seepage of materials from the bag.

Abstract: A plastic or like material liner inserted within a fabric type bulk bag so that the liner is secured in position within the bag with an adhering means along substantially the outer surface of the liner for adhering to the inner most surface of the bulk bag at strategic points, and a second adhering means for adhering the lower portion of the bulk bag to the liner at substantially the point of exit of bulk contained within the bag, so that release bulk from a lower spout would not tend to dislodge the liner from its lined position within the bag.

Abstract: A cooking grease disposal bag is formed with a multiply construction and has an internal layer of a heavy gage deformable aluminum foil, an intermediate layer formed by a puncture resistant polyethylene sheet, and an outer layer formed by an insulating paper material. First and second fold lines are designated by indicia on an external front wall of the bag. A permanent adhesive strip covered by a peel off layer is disposed across a top edge of the front wall and a pair of tacky adhesive strips each having exposed tacky adhesive surfaces have a first end secured adjacent a first fold line and a second free end. The tacky adhesive strips may be utilized to temporarily seal the bag, while the permanent adhesive strip may be utilized to permanently seal the bag for disposal.

Abstract: A packaging bag for photosensitive materials has an opening and welded fin sides wherein the bag and comprises a folded cylindrical coextruded multilayer inflation film having at least one light-shielding layer containing a light-shielding material, said opening being formed of the uncut ends of the folded inflation film, and said welded fin sides being formed of both cut portions of the inflation film, and a bag-making method thereof.

Abstract: This invention provides an easily openable tightly sealed plastic bag which is formed of a film containing at least a substrate layer and a heat seal layer and is possessed of a sealed part whose substrate layer contains a multiplicity of through cuts, these cuts being formed substantially on the edge lines and partly or wholly closed with the heat seal layer. This tightly sealed bag safely retains the practical strength normally expected of any bag and avoids accidentally sustaining rupture while the bag is being transported or handled and yet permits itself to be opened with the force of finger tips. This invention manifests its utility particularly in a tightly sealed bag which is formed of a substrate of high strength and high barrier property. This invention further provides a method suitable for the production of the tightly sealed bag described above and a device to be used in working the method.

Abstract: An antistatic sheet material and package formed therefrom is provided. The laminated sheet material includes a first inner layer which is preferably a coextruded film having a polyolefin ply and second copolymer ply of ethylene-acrylic acid copolymer, ethylene vinyl acetate copolymer, or blends thereof, a second intermediate layer such as a polyester film having an electrically conductive material thereon, and an outer layer of an antistatic material. The laminate may be formed by hot roll lamination or an adhesive may be used between the first and second layers.

Abstract: A waste bag made of a synthetic plastics material. It has an internal lining of a liquid-absorbent material which terminates inwardly of the mouth of the bag, so that the latter is free of lining in the region of its mouth to enable that region to be gathered and tied.

Abstract: The present invention is directed to a duplex bag having a handle. The bag includes an inner and outer web of thermal plastic material. The outer web includes a front panel, a rear panel and a handle portion. The handle portion is integral with the front and rear panels and has a width less than the width of the front and rear panels. The inner web includes a top panel, a bottom panel and a gusset portion. The gusset portion is integral with the top and bottom panels and has a line of perforations spaced from and parallel to the top and bottom panels. All panels have about the same dimensions. The handle portion and the gusset portion are adjacent one another at a top end of the bag. The front panel overlies the top panel and the rear panel overlies the bottom panel. A side seam is formed at each lateral edge portion of said front, top, bottom, and rear panels and seals the panels together.

Abstract: A cushioned bag has two adjacent multilayered sections comprising an outer layer of flexible thermoplastic material, a middle layer (or partial middle layer) of polyolefin film, and an inner layer of cushioning material. The sections are fused together along at least one edge of the bag to form a seamed edge comprising a fused bead. Apparatus for making a bag having a beaded edge includes cooperating heated jaws between which the bead is formed. A method of using the apparatus to make the bag includes rotating take-up rolls faster than feed rolls to pull the bag cleanly away from the jaws along the bead forming the seamed edge.

Abstract: Sheet material for making a water closet disposable article, such as a bag for body waste products, is unaffected by contact with water of neutral pH, but is degraded on contact with an alkali added to the pan of the water closet. The material may have a central layer of polyvinyl alcohol, an inner layer made up of at least two coatings of a blend of polyvinylidene chloride acrylonitrile copolymer with carboxylated acrylic copolymer, and an outer layer of at least two coatings of carboxylated acrylic acid. A similar sheet can be used to back an absorbent layer of a sanitary article, such as a diaper. In use, an alkaline substance containing triethanolamine and a surfactant, such as sodium dioctyl sulphosuccinate, is added in liquid form to the water closet pan prior to dropping in the bag or other article, so as to raise the pH of the water to about 10.

Abstract: A laminated packaging material from which package type containers are fabricated for storing or transporting a variety of products ranging from dry food-stuffs to electronic equipment where maintenance of a dry environment is a requirement, comprising an outer imperforate water impervious layer, a middle layer of absorbent material and an inner perforated moisture impervious layer.

Abstract: An autotransfusion device usable with a chest drainage unit includes a collapsible fluid collection bag assembly having pliable fluid collection bag, a pair of stiffener members adjacent the opposed sides of the bag, and an enclosure sealingly connected to the bag securing the stiffeners in place. A fluid inlet, gas outlet, and a blood outlet are connected to the bag. A holder is dimensioned to compress the opposed edges of the bag assembly to cause the stiffeners to bow outwardly in opposite directions and expand the collection bag.

Abstract: A roll of continuous laminated web product usable for forming a flexible package includes a first continuous flexible web formed of a gas barrier material adapted to form an inner bag of the package, and a second continuous flexible web adapted to form an outer bag of the package. The first and second webs are adhered together by adhesive bonds in the form of a discrete pattern of bonded areas which repeats in the machine-direction of the laminated web construction to define a plurality of sequentially disposed, dual walled sheets between such discrete patterns of bonded areas. Each of the discrete patterns of bonded areas includes discrete bonds which are spaced-apart from each other in the cross-machine-direction of the roll to define at least one passageway between the discrete bonds.

Abstract: A flexible film package for carry-out meal items is fabricated from a pair of telescoped sack members, the outer sack member being made longer than the inner sack member in order to define a spill-confinement pouch in its bottom and the inner sack member being fabricated from relatively stiffer film material than the outer sack member and with one or more beverage cup receiving apertures in its bottom for promoting a stable, upright positioning of the beverage cups during carrying of the filled package and upon placement of the filled package on a generally horizontal support surface.

Abstract: A film structure for a steam sterilized container capable of containing a liquid to be maintained and removed under sterile conditions is provided. The film has at least two polyolefin layers, the outer layer having a greater density and softening temperature than the inner layer.

Abstract: A flexible bulk container comprises a side wall structure having an outer wall (10) and an inner wall (11) lying within and closely adjacent to the outer wall. A base closes a lower open end of the side wall structure. A plurality of lifting loops are provided at the upper end of the side wall structure, each lifting loop having a first end that is connected to or integral with the outer wall (10) and a second end that is connected to or integral with the inner wall (11).

Abstract: There is disclosed a color filter for wind-up system color changer which comprises two sheets of laminated transparent films in continuous length, having a plural number of units each comprising a sheet of a transparent film folded in two provided in series sealed between the films in continuous length with its line of flection being disposed along the longer direction of the films in continuous length, and the edges of the units on the opposite side to the line of flection being under the state opened.

Abstract: A package for carrying, dispensing and reheating hot fried foods is disclosed. The package comprises an inner and an outer layer. The inner layer is a grease-absorbent layer and the outer layer is grease-resistant and flame retardant. The layers are preferably made from paper. The layers are connected only at two points, e.g., top and bottom, to provide for insulating, circulating air between the two-plies. The invention is able to insulate against loss of heat, allows for the venting of steam to prevent sogginess, absorbs grease on the inside to prevent sogginess, is grease resistant on the outside to prevent grease staining, has structural integrity and is cost effective. The invention is able to provide a reheating package for both microwave and conventional ovens.

Abstract: A cartridge is provided in the form of a sheet of material having swingable flaps extending from opposing side regions. A folded bag, which is to be filled with fluid, is positioned on the sheet and attached to the flaps, and the flaps are folded thereover in the initial position. In use, the cartridge is placed in a casing and, upon filling, the bag expands in a controlled manner and pushes back the flaps.

Abstract: Disclosed are a pouch for containing a material therein, a laminate film for the pouch, and a method for producing the pouch. The laminate film comprises a first plastic layer and at least one second plastic layer on which said first plastic layer is laminated. The first plastic layer is partially subjected to surface roughening treatment prior to the lamination, and surface irregularities are filled with a plastic material of the second plastic layer. In a pouch having substantially rectangular shape, at least one folded portion is provided at a side edge of the pouch. The surface roughened portion is positioned at and around the folded portion and at an external surface of the pouch. In one embodiment, the folded edge is provided at one side of the pouch and a heat sealed portion is provided at the other side edge thereof. In another embodiment, folded portions are provided at both side edges of the pouch and a heat-sealed portion is provided at a rear central portion thereof.

Abstract: A plastic bag for vacuum packaging comprises an inner layer of heat sealable thermoplastic material which incorporates interconected air channels on its inner surface and an outer layer of gas impermeable material. Optionally, one or more intermediate layers may be included between the inner layer and the outer layer. The inner layer and the outer layer, and any intermediate layers, are joined together such that no air pockets exist between the inner layer and the outer layer.

Abstract: The isothermic package is comprised of a flat and flexible envelope (10) of which the two walls (11, 12) are welded along three sides so as to provide an opening (13) for introducing and withdrawing the product (P) to be kept warm or cold during its transportation. The walls (11, 12) are each comprised of two isothermic sheets (14, 15) which delimit therebetween a spaced (16, 17, 18) filled with a gas having a low heat transmission power.

Abstract: A container includes an outer load carrying bag or container with lifting loop(s) and at least one filling opening, and a liner having two sides closed with welds spaced from the inner side edges to form skirts which allow air in the liner to escape through openings between the welds. The welds are interrupted and overlapped by a distance a, preferably such that 0%<a<50% of the liner's total side length. The liner is placed in the outer container such that the welded seams with the skirts are parallel to the vertical axis of the container and are fastened to side seams thereof. The liner has an opening for filling of bulk material, and it may have a gusset which preferably has a height of up to 1/4 of the flat width of the liner between the welds.

Abstract: A plastic bag of polyolefin material such as polyethylene, for packaging materials, comprising particles of less than 50 .mu.m, and a closed bag containing such materials and a foil material for such a bag.The foil wall of the bag is provided with venting apertures with smooth edges, obtained by laser radiation, having a maximum size of 50-100 .mu.m; the distance between the venting perforations is such that the tensile strength of the foil is substantially the same as the tensile strength of the similar non-perforated foil.In a low density polyethylene foil of a thickness of 130-190 .mu.m distance between the perforations of 80 .mu.m is more than 20 mm, in a linear low density polyethylene foil of about 50-110 .mu.m the perforation distance is at least 5 mm.The bag may consist of two perforated foil layers, the perforations being staggered with respect to each other.

Abstract: An internally lined food storage bag useful in the storage of moisture-retentive foods such as fruits and vegetables. The storage bag comprises a hand-closed water-impermeable outer bag containing an absorbent inner bag. The inner bag is made of water absorbent paper or paper-like material attached at the bottom and in small areas (i.e., spots) only part of the way up the interior of the outer bag, thereby enabling separate closure.

Abstract: A sealable package (20) in accordance with this invention includes an inner bag or container (24) located within an outer bag or container (26). The inner bag is formed of a flexible sheet (40) of material resistant to the passage of gas therethrough. The outer bag is formed of a flexible sheet (42) of material. The inner bag is secured to the outer bag along its top (32) and bottom (30) edges and along a vertically oriented back seam (52) by areas (44) of adhesive interposed therebetween. The adhesive areas define passageways (58) therebetween through which air from the ambient atmosphere may flow to enter into the space (28) between the two bags. The inner bag is arranged to be filled with some material (22) and then vacuumized and the top sealed closed.

Abstract: The present invention relates to a flexible receptacle for fluids, which receptacle comprises a cylindrical outer casing (1) and an inner bag. The casing is formed by a hose which is doubled up at one end of the receptacle so as to obtain a casing (1) with a double wall. The strength properties of the casing can be considerably improved if the casing in the portions positioned in the vicinity of the doubled end of the receptacle are twisted around the central axis of the receptacle with respect to the mantle face of the receptacle.

Abstract: The invention discloses a multiple layer packaging film, packages made therefrom and a method of opening the packages. The invention provides inseparable seal strength and in some cases hermetic seals, in combination with peelable ply separation opening for access to the contents of the package, while at the same time providing excellent barriers to transmission of oxygen and moisture. Certain embodiments provide for improved abuse resistance, excellent graphics, and other improvements. The method of opening the package depends on separating opposing ones of the package sidewalls, forcing the opening tear to be propagated partially through the film to a peelable layer interface, with subsequent ply separation along the interface to effect completion of opening of the package.

Abstract: A child-safe toy box includes a container and lid assembly structurally defined by self-supporting, readily flexible foam having a form fitting cover thereon which protectively encloses the foam. The cover may be of woven cloth and includes an inner portion permanently disposed over the foam and an outer decorative portion. The outer portion of the cover is provided with snap-open seams to allow removal thereof from the container and lid for cleaning purposes. A cloth hinge connects the lid with the container. An optional flexible, plastic liner may be inserted within the container to provide added rigidity and protect the foam against piercing by sharp toys.

Abstract: A thermoplastic heavy duty shipping bag having walls formed of cross-laminated outer plies of uni-axially oriented polyethylene and inner walls of low density polyethylene, heat sealed thereto. The bag provides improved puncture and snag resistance.

Abstract: A disposable, flexible, expandable lantern-shaped liner open at two ends is provided for use with a pneumatically-assisted, cup-shaped bag of the type used for transporting, storing and discharging diverse materials. The liner is equipped with pressure-sensitive adhesive spots for adherence and conformity to the shape of the bag upon inflation of the bag and liner. Liner are provided for detaching the liner from the bag for convenient disposal following discharge of material.

Abstract: A backpack or transport bag including an outer pack structure of pliable material, preferably treated on one side with a water resistant coating, and including a number of seams or other perforations therethrough to attach straps, pockets, etc., the outer pack structure including closure means to close an opening defined therein, and an inner bag structure of a shape complementary to the outer pack structure and also of a pliable material coated on one side thereof with a water resistant material, the inner bag means including complementary upper closure means to attach to and function with the closure means of the outer pack, the inner bag and the outer pack preferably having seams at differing locations.

Abstract: A flexible bag-like liner having a relatively thin wall is adapted to be connected to a wall portion of a receptacle with a liquid passageway provided in association with the wall portion so that liquid may be introduced into the liner and discharged therefrom; the wall portion is adapted to be fitted substantially in sealing relationship with a body portion of the receptacle with discharge means being provided for discharging air from between the liner and the interior walls of the receptacle when fluid under pressure is introduced into the liner to urge the liner against the interior walls of the receptacle. The arrangement is such that when the contents of the liner are partially discharged, a partial vacuum between the exterior of the liner and the interior of the receptacle urges the liner into contact with interior walls of the receptacle.

Abstract: An internally lined food storage bag useful in the storage of moisture-retentive foods such as fruits and vegetables. The storage bag comprises a hand-closed water-impermeable outer bag containing an absorbent inner bag. The inner bag is made of water absorbent paper or paper-like material attached at the bottom and in small areas (i.e., spots) only part of the way up the interior of the outer bag, thereby enabling separate closure.

Abstract: A sack comprises an inner container and a double-ply outer container which latter comprises a tubular or essentially tubular section of which the opposed severed edges are interconnected by a seam. Alternatively, the outer container comprises two such sections having their severed edges interconnected by respective seams.

Abstract: A water-resisting and oil-resisting laminated sheet, the oil resistance of which is not reduced by alcohol, prepared by laminating an ethylene-vinyl acetate copolymer layer and a paper, which paper is coated or impregnated with a liquid or a coating composition and then dried by heating. The copolymer layer has a vinyl acetate component of 10 to 30 mole %, a melt flow index of 2 to 20, and a thickness of 10 to 50.mu.. The liquid is in an amount of 0.5 to 5% by weight to the paper as solid component and is prepared by mixing an aqueous solution or an aqueous dispersion of an oil-resisting polymer such as polyvinyl alcohol, etc., with an aqueous dispersion of a perfluoroalkyl acrylate copolymer at 3:7 to 7:3 by solid component ratio, adding thereto 0.1 to 3% by weight of a penetrating agent such as polyalkylene glycol or derivatives thereof, and diluting with water.

Abstract: A portable water container is disclosed having an inner bag formed of a flexible water impermeable sheet and an outer protective covering for the bag formed of a wear-resistant fabric; a tubular drain and fill conduit mounted in aligned openings in the bag and covering; and a releasable seal clamping the sheet forming the inner bag in a watertight sealed connection for sealing the conduit to and in flow communication with such bag; and a clamp securing the conduit in a load-bearing attachment to the covering.

Abstract: A thermoplastic heavy duty shipping bag having walls formed of cross-laminated outer plies of uni-axially oriented polyethylene and inner walls of low density polyethylene, heat sealed thereto. The bag provides improved puncture and snag resistance.

Abstract: A double-walled or quadruple-walled foil bag (8) for receiving a liquid, more particularly beer, which is to be arranged in a preferably spherical pressure tank, consists of flat, superposed, circular or polygonal foil pieces (2a-2c) which are welded together at the edge. The foil pieces which form a foil bag half (8a, 8b) are provided in the central area with a connecting piece (5) which penetrates them. The foil pieces, which form the double or quadruple wall, are preferably cut out of a flattened, commercially available foil tube. In order to test the finished foil bag for imperviousness, only an annular peripheral area which runs next to the weld seam (6) and which is connected via a connecting channel with a central area surrounding the connecting piece (5) is inflated.