Abstract: The invention provides methods, systems, and devices for installing barriers in openings or gaps in or between structures such as walls, ceilings, and floors. At least one barrier molding bag is positioned in the hole or gap, and a flowable firestop material that is preferably operative to cure or harden, such as a hydratable cementitious slurry, is introduced into the bag to create a barrier in the hole or gap.

Abstract: A resealable envelope comprising a flexible plastic back sheet, a backing adhesive applied on a back surface of the flexible plastic back sheet to attach the envelope to a package, a flexible plastic front sheet attached to the back sheet at their respective side edges and bottom edges, a flexible closure flap being adhered directly to the front surface of the back sheet at their respective top edges via a permanent adhesive and overlapping said front sheet, and a resealable adhesive located proximal to the top edge of the front sheet such that the resealable adhesive is capable of fastening said closure flap to the front sheet forming a resealable closure.

Abstract: A patch handle bottom valve bag is formed from a tubular length of plastics material and is provided with a reinforcing patch, of a width less than 50% the width of the bag, adjacent the upper edge of the bag. The patch is heat sealed to one panel of the bag by a pair of linear heat seals and a handle opening is pieced through the patch and the underlying panels of the bag. The bag includes a heat seal which extends transversely of the bag, spaced from the upper edge thereof, this heat seal also extending across the patch adjacent the lower edge thereof. The bottom of the bag is formed in a conventional manner into a block bottom with a valve sleeve inserted and secured therein. The provision of the heat sealed reinforcing patch provides a stronger bag, one which uses less material, and one which will have fewer manufacturing problems when compared to existing reinforced bags.

Abstract: The valve bag includes a bag body having a valve end portion, the valve end portion constructed to form a filling passage in which a valve sleeve is inserted. The valve sleeve has a first end extending into the interior of the valve bag and a second end extending exteriorily from the bag body. A valve protection member is secured to the second end.

Abstract: The valve bag includes a bag body having a valve end portion, the valve end portion constructed to form a filling passage in which a valve sleeve is inserted. The valve sleeve has a first end extending into the interior of the valve bag and a second end extending exteriorily from the bag body. A valve protection member is secured to the second end.

Abstract: A method for closing a valved sack having one or more layers of flexible material. The valved sack has a filling opening which is closed after filling the valved sack. The filling opening is formed by opposite layers of material, which when closing the valved sack, are on top of one another and are undetachably joined. The method involves closing the filling opening by joining the layers of material which are on top of one another by plastic deformation without applying heat. A valved sack formed by the method is also described.

Abstract: A valve bag has a sleeve that includes a butt seam formed by abutting opposed edges of a paper sheet and securing the abutting edges. A strip of tape may be used to secure the abutting edges. The interior surface of the sleeve and the tape are both constructed from a sealable material. A tight seal is achieved when the sleeve is sealed.

Abstract: The present invention is a valve bag with a valve assembly that provides closure during and after the filling process, thus preventing unwanted spilling and sifting of the valve bag contents through the valve opening during transporting or moving the bag to a location in which the valve is permanently sealed, and methods for making and filling such a bag. An automatic self-closing valve assembly also is provide that requires no subsequent sealing after the filling process.

Abstract: A valve bag is provided having a self-closing feature to preclude sifting losses after filling, but before the bag is fully sealed, while enabling the facilitated final secure closure of the bag.

Abstract: A valve assembly for a satchel end tubular bag comprising four members. Two members form an upper sub-assembly and two other members for a lower sub-assembly. The valve assembly is adhesively secured at a corner tuck of the satchel end within the paper plies of the bag. The upper sub-assembly is wrapped within the lower sub-assembly and forms a passageway for a product injection nozzle to be inserted therethrough for introducing product into the bag. The members of the sub-assemblies are laterally offset and each sub-assembly has said members both laterally and longitudinally offset, or stepped, to achieve strength and a sift-proof construction. Extensions of one of the members of each sub-assembly extend bag-inwardly and comprise a thin pliable material, whereby to provide improved self-closure as the product fills the bag. Both improved filling and sealing are achieved.

Abstract: A valved bag is provided, having first and second end portions, and at least one in-folded flap member and at least one outer flap member affixed to at least one of the first and second end portions. A cover member is positioned and affixed to the in-folded flap member and outer flap member, prior to final closure of same, for preventing the undesired escape of material from within the bag, subsequent to closure of the ends and filling of the bag.

Abstract: A valve bag is provided having a self-closing feature to preclude sifting losses after filling, but before the bag is fully sealed, while enabling the facilitated final secure closure of the bag.

Abstract: A method for loading a bulk cargo into a flexible expandable liner. The liner has a body defining an inlet opening and an interior for holding the cargo. An inlet chute is connected to the liner body and extends through the inlet opening. The method includes the step of opening the inlet chute to form a tubular shaped passageway which passageway is in communication with the interior and exterior of the liner. Then conducting bulk cargo through the tubular passageway into the interior. Raising the gas pressure in the interior of the body to force the inlet chute against the liner body and thus close off the chute and inlet opening.

Abstract: A valve bag is provided having a self-closing feature, to preclude sifting losses after filling, but before the bag is fully sealed, while enabling the facilitated final secure closure of the bag.

Abstract: A bag having a filling valve integral with and extending though an end closure section of the bag adapted to be sealed by electromagnetic field induction heating. Valves having a thermoplastic polymeric inner layer are provided with metal foil adjacent to at least a part of the layer as means for inductively heating the polymeric inner layer. Methods and apparatus of sealing a bag having such a filling valve are provided.

Abstract: A packaging container made of flexible material has bottom and head ends along with front and rear walls. The front and rear walls have lower side borders juxtaposed to the bottom end and which are joined together along juncture fold lines which are parallel to one another. The front and rear walls have upper side borders juxtaposed to the juncture fold lines. The upper side borders of the front and rear walls are connected by side panels having outer fold lines at the second side borders and an inner fold line such that when the container is in a flat unfilled state, the side panels are sandwiched between the front and rear walls and the outer fold lines and inner fold lines respectively converge toward one another as the head end is approached.

Abstract: A bag having a filling valve integral with and extending through an end closure section of the bag adapted to be sealed by electromagnetic field induction heating. Valves having a thermoplastic polymeric inner layer are provided with metal foil adjacent to at least a part of the layer as means for inductively heating the polymeric inner layer. The thermoplastic polymeric inner layer can comprise polyolefins and the metal foil can comprise aluminum. Methods of sealing a bag having such a filling valve are provided.

Abstract: A masked monopolar sifting filter implemented by multiplying an input signal by a series of shifted nonuniform mask signals and selecting the minimum signal sample value from each resultant product. The intermediate signal thus produced is then again multiplied by the shifted mask signals and the maximum signal sample value from each product chosen to produce a filtered output signal. The filters are particularly useful for edge enhancing features of selected sizes in an image signal.

Abstract: A foldable bag material is formed into a bag having at least one end with a corner and having an end closure formed by the bag material which closes off the one end of the bag. A filter valve tube extends within the end closure at the one corner, the tube having an inner end disposed within the interior of the bag such that the tube is adapted to receive a filler nozzle of a pneumatic filling device for filling the bag with a filling material. The tube has an inner end portion and an outer end portion, the inner end portion having a cross-sectional contraction which is contracted relative to the outer end portion such that the contracted inner end portion forms a seal with the filler nozzle, the tube being made at least partially of a filter material which is gas-permeable but which retains the filling material such that the gas-permeable material provides for venting of the bag during filling.

Abstract: A bag of foldable material has an end closure closing off one end of the bag and a filling valve tube device extends into the end closure at a corner of the bag, the filling valve tube device has an inner end disposed within the interior of the bag and has an inner layer which is convertable from a normally inactive adhesive state to a state capable of sealing off the filling valve tube device. A shut-off lip device of flexible material is disposed within the end closure and projects into the interior of the bag beyond the interior end of the filling valve tube device, the shut-off lip device being constructed to be responsive to the pressure of the filling material introduced into the interior of the bag to close off the interior opening of the filling valve tube device.

Abstract: Square ended valve bags are formed from a tube-like band and in a chain with the back wall and top end of each bag partially sealed together to provide bags between the seals. Patches are placed on the top end of the bag and the patches and top ends are provided with displaced openings to provide a valve. Each bag in turn may be filled through the valve located in the top end, the bag expanding forwardly from the back wall by expanding gussets in the top and bottom ends.

Abstract: There is disclosed a bag assembly comprised of a tubularly-shaped bag preform formed of a plastic material defining a top closure portion and a bottom closure portion and provided with an adhesive layer peripherally-disposed about the tubularly-shaped bag preform proximate the top and bottom closure portions. The top closure portion and the bottom closure portion are subsequently formed with corner folds and side folds with the side folds being dimensioned whereby end portions of said side folds are spaced apart from one another upon subsequent folding agent about a fold line. A conduit member including a sleeve portion is mounted on one of the corner folds of the top closure portion by an adhesive layer portion disposed on the corner fold, and sheet members are thereupon mounted over the side and corner folds by adhesive layer portions thereon. After folding of the side fold members about the fold lines, top and bottom closure sheet members are mounted on the top and bottom closure portions.