2729results about "Bags" patented technology

A resealable bag assembly can include an open-ended bag and a zipper assembly having a tear strip. Interlocking profile bodies of the zipper assembly can repeatedly mate with each other to seal the bag closed and separate from each other to open the bag. The tear strip can be pulled to tear an opening through the zipper assembly. In contrast to some known bag assemblies having tear strips along top edges, top bends, or top folds in the bag assemblies, one or more examples of the zipper assemblies described herein may position the tear strip along a front side or surface of the bag assembly, which also can be the surface of the bag assembly that is presented to a consumer and may include indicia identifying the product inside the bag assembly and / or the entity manufacturing or selling the product.

The utility model discloses automatic bag making and bagging equipment which comprises a machine base and an electric control cabinet, the machine base is sequentially provided with a feeding device, a shaping vacuum cylinder and an automatic bagging device, the inner wall of the shaping vacuum cylinder is provided with a plurality of suction ports in the circumferential direction, and the suction ports are used for adsorbing the outer wall of a bag material so that the bag material can be kept in a cylindrical shape. The automatic bagging device comprises an inner mold for sleeving a bag material, a straight pipe conveying and grabbing device used for tightly sucking the bag material and sleeving the bag material on the inner mold is further arranged between the shaping vacuum cylinder and the bagging automation device. The bag sealing and cutting device is used for heat-sealing the end part of the bag material to form a bag body and cutting off the connection between the bag body and the bag material, and the bent pipe conveying, grabbing and releasing device is used for adsorbing the end part of the unprocessed bag material to keep the bag material in a cylindrical shape, so that the whole process does not need manual intervention, continuous and rapid bag making and bagging operation can be realized, and the production efficiency is greatly improved.

The invention discloses a bacteriostatic and antiviral bamboo pulp paper-based sanitary isolation bag as well as a preparation method and application thereof, and belongs to the field of functional paper-based packaging materials. The isolation bag takes bamboo pulp fiber paper as a base material, and the surface of the isolation bag is coated with a water-based polyhydroxyalkanoate functional coating. According to the preparation method, a special polyphenol derivative-chitosan quaternary ammonium salt-nano zinc oxide organic-inorganic hybrid factor is introduced, and the problem of agglomeration of nano particles is effectively solved by utilizing the special bridging effect of polyphenol, so that high-density cation capture and oxidation inactivation sites are constructed on the surface of the coating. Compared with the prior art, the method has the advantages that the method does not need to depend on organic fluorine compounds, and the excellent waterproof and oil-proof barrier effect and the efficient inactivation of viruses can be achieved only through the extremely low coating amount. In addition, the isolation bag has unique environmental chemical responsiveness, can be efficiently dissociated under the alkaline condition to facilitate repulping recovery, can be completely biodegraded in the natural environment, and perfectly considers the requirements of biological safety protection and green environmental protection.

A transport bag includes a closure device for detachably connecting the front wall to the rear wall in the closure state for receiving the conveying good and for releasing the connection from the closure state into the open state for releasing the conveying good. The locking of the closure device is performed with the aid of an electric drive. The reversible closing lock is achieved with the aid of the spring of the solenoid. For the opening of the closure device, the solenoid is switched for a short time and the reversible closing lock is released. The switching takes place in the unloading station by supplying electric current to the electric contacts with the aid of the electric switching contacts of the unloading station.

A reclosable enclosure includes a body having a front panel and a back panel secured to each other and forming a cavity therebetween to store contents. The body includes a flap that extends from a top end of the body. The reclosable enclosure includes a zipper assembly coupled to an interior surface of at least the front panel. The zipper assembly includes a first profile strip and a second profile strip that form a reclosable zipper to selectively close the cavity. The flap blocks access to the reclosable zipper and is sealed to at least one of the front panel or the second profile strip in an intact state of the flap. The flap defines one or more lines of weakness to permit irreparable separation of a sub-flap from a remainder of the flap to access the reclosable zipper.

There is disclosed a bag having a tubular body with a top open end and a bottom closed end. The tubular body has a larger open diameter at the top open end. The tubular body narrows into a narrower open diameter adjacent to a bottom closed end. The tubular body in a flattened two-fold condition has a pair of side edges extending from a top edge to a bottom edge. The top edge delimits the top open end. The bottom edge delimits the bottom closed end. The pair of side edges are generally parallel to one another in a first portion adjacent to the top edge.

A pressure-relief valve includes a main body equipped to be fastened to a flexible package material. The main body has at least one through hole forming a passage through the main body. A valve membrane lies, on a package side, against the main body in a region around the hole, and a sealing liquid between the main body and the valve membrane. The valve has a water-soluble polymer, whereby at least one component of the valve, for example the main body, is made of a polymer composition that includes a water-soluble polymer.

A tamper-evident bag assembly that can be sealed to enclose contents within the bag assembly in a tamper-evident manner. The bag assembly is provided with closure tabs that can be folded over the top edges of the bag assembly and sealed to a side panel of the bag. Strategic portions of the bag assembly can be scored to indicate tampering if unsealing of the adhesive takes place. The bag assembly is also provided with a pull tab designed facilitate opening of the sealed bag assembly to reveal the contents contained therein. When the pull tab is used to open the sealed bag, the bag cannot be re-sealed.

A multilayer packaging material includes a substrate formed of a cellulosic fiber-based material. The substrate has a first major surface and a second major surface opposite the first major surface. An oxygen barrier layer is formed of a PVOH material attached to the substrate, wherein the oxygen barrier layer is an innermost layer of the multilayer packaging material and further wherein the oxygen barrier layer is heat sealable. At least one moisture barrier layer is attached to the substrate, the moisture barrier layer selected from an inner moisture barrier layer disposed intermediate the substrate and the oxygen barrier layer and an outer moisture barrier layer disposed on the second major surface of the substrate. In further aspects, a packaging article, a method for making a multilayer packaging material, and a method for packaging a product are provided.

An enclosure assembly can include panels on opposite sides of an interior volume, and a zipper assembly between the panels. The zipper assembly may include a tear strip that can be pulled and tear through one of the panels and create an opening through which the zipper assembly is accessible. This panel can include a deformation pattern formed from thinned out areas of the panel that one or more of overlap or do not overlap the tear strip. The deformation pattern can reduce a pulling force needed to tear through the panel within the deformation pattern relative to outside the deformation pattern.

A formulation and method for producing a multilayer film and a coated multilayer film comprising a barrier layer including a polar polymer resin, such as EVOH, as described.

The invention provides a polyethylene composite film. The polyethylene composite film comprises a surface layer, a middle layer and a heat sealing layer which are sequentially stacked, wherein the surface layer is composed of 58%-76% of hexene copolymerized metallocene linear low density polyethylene, 18%-37% of low density polyethylene and a small amount of slipping agent and anti-blocking agent; the middle layer is composed of 79%-88% of octene copolymerized metallocene medium density polyethylene, 5%-21% of hexene copolymerized metallocene linear low density polyethylene and 6%-15% of high density polyethylene; and the heat sealing layer is composed of 47%-65% of hexene copolymerized metallocene linear low density polyethylene, 33%-45% of low density polyethylene and 2%-5% of a tackifier. According to the composite film disclosed by the invention, through gradient design of each layer of material, the whole composite film has rigidity and toughness, and the composite film is particularly suitable for manufacturing stand-up bag packages which stand stably and are compression-resistant and impact-resistant.

A resealable bag topper for application to a non-resealable packaging bag is disclosed. An example device includes a flexible topper body defining an access channel, a resealable mechanism such as a zipper or slider closure to open and close the channel, and an adhesive portion for affixing the body to the bag. To enable multiple uses of the device, the adhesive portion is specially configured. In one example, the adhesive portion includes a repositionable adhesive or a multi-layer assembly of stacked adhesive layers that enables the entire device to be removed from a first bag and reapplied to a subsequent bag. In another example, the adhesive portion is made integral with the topper body.

The utility model relates to the technical field of freeze-drying, in particular to a disposable container suitable for a freeze-drying process. The disposable container suitable for a freeze-drying process comprises: a flexible container; the flexible container is of a bag body structure with a bacterium blocking and shielding function; the flexible container is provided with a frame structure to form a liquid loading area for maintaining the geometrical shape of feed liquid; the flexible container is provided with a first transmission interface for transmitting liquid into the flexible container and keeping the liquid sterile; the flexible container has a second delivery interface that delivers the powder to the outside thereof and remains sterile. As a pre-sterilized totally-closed container applied to a tray freeze-drying process, each process link of tray freeze-drying can be kept sterile without the protection of a hundred-level environment. The product provided by the utility model can be sterilized in advance and can be used after being disassembled, the state confirmation of the isolator and the online cleaning and the online sterilization of equipment in the traditional production process are not needed any more, and the production efficiency is improved.

A multilayer packaging film includes a first film, a second film, and a primer layer. The primer layer includes a water dispersible material. The first film includes a first polymer. The second film includes a barrier layer including a barrier material. The primer layer is positioned between a first film second surface and a second film first surface.

To provide a laminate excellent in tearing property while reducing environmental load.SOLUTION: A laminate comprises a substrate film, a primer layer, an adhesive layer, and a sealant film in this order, and includes a printed surface of an electrostatic ink composition adhered to the adhesive layer. The adhesive layer contains a solvent-free adhesive composition including a polyol component and a polyisocyanate component, its cured product, or a mixture thereof, and the adhesive strength of the adhesive layer is 1.0 N / 15 mm width or more. The laminate has a group of scratches, each consisting of multiple scratches that include through-holes.SELECTED DRAWING: Figure 1

The utility model belongs to the technical field of food preservation, and particularly relates to an alcohol bag for food preservation. The alcohol fresh-keeping material comprises a front-side wrapping material, a back-side wrapping material and an alcohol fresh-keeping material body, a middle reserved cavity is formed by the front-side wrapping material and the back-side wrapping material in a peripheral hot-pressing mode, and the middle reserved cavity is filled with an alcohol fresh-keeping material body. The surface of the front surface wrapping material is provided with breathable micropores. Ventilation micropores are formed in the back surface wrapping material. The ventilation micropores are conical holes, and the taper can be adjusted so as to assist in controlling the volatilization speed of the alcohol. Each of the front-side wrapping material and the back-side wrapping material is composed of a high-temperature-resistant printing layer, a composite connecting layer and a heat sealing layer. The alcohol fresh-keeping material body is a pure liquid or a colloidal mixture or particles. The packaging film formed by extruding macromolecules ensures that the packaging film is air-permeable and liquid-impermeable, the volatilization speed is adjustable, the situation that the taste of food is affected by overhigh local alcohol concentration is not easily caused, and meanwhile, the food can be kept fresh for a long time.

Provided is a side-gusseted pouch that reduces occurrence of delamination in the vicinity of a lower end coupling portion of a side gusset film. A side-gusseted pouch in which in at least one of side gusset films on right and left sides, a lower side inclined edge portion includes a folding guide portion and a lower end side connecting portion that connects a lower end of the folding guide portion and a lower end coupling portion, and the lower end side connecting portion connects the lower end of the folding guide portion and the lower end coupling portion such that the lower end coupling portion is located below a first imaginary intersection point at which a central imaginary line passing through an upper end coupling portion and the lower end coupling portion intersects a folding imaginary line defined by the folding guide portion.

The invention discloses an antibacterial food composite bag and a preparation method thereof, and relates to the technical field of food packaging. The antibacterial food composite bag at least comprises a polyethylene glycol terephthalate outer layer, an aluminum foil middle layer and an antibacterial polyethylene inner layer, the antibacterial polyethylene inner layer comprises the following raw materials in parts by mass: 100 parts of low-density polyethylene, 6-8 parts of a modified halloysite loaded origanum vulgare essential oil antibacterial agent, 1-3 parts of a silver-carbon dot composite antibacterial agent and 5-15 parts of low-density polyethylene grafted acrylic acid; 0.5 to 1.5 parts of an antioxidant; and 0.1 to 0.3 part of an initiator. The modified halloysite loaded origanum vulgare essential oil antibacterial agent and the silver-carbon dot composite antibacterial agent are compounded for use, so that the prepared antibacterial food composite bag has the advantages of wide antibacterial spectrum and long time efficiency, and the shelf life of food can be prolonged.

The invention relates to a multilayer polyethylene film comprising, or essentially consisting of, an outer sealing layer (A) comprising an ethylene homo- or copolymer (a1) and optionally an ethylene homo- or copolymer (a2); a middle layer (B) comprising an ethylene homo- or copolymer (b1), an ethylene homo- or copolymer (b2), and optionally an ethylene homo- or copolymer (b3); and an outer sealing layer (C) comprising an ethylene homo- or copolymer (c1) and optionally an ethylene homo- or copolymer (c2). The polyethylene film has a total layer thickness of at most 50 µm. The middle layer (B) contains, if any, less than 15 wt% propylene homo- or copolymers by weight of the middle layer (B). Optionally, the sealing layer (A) is at least partially coated with a release coating.

A laminate including at least a first resin layer and a second resin layer, wherein the first resin layer is provided so as to be separable from the second resin layer, and the separation strength between the first resin layer and the second resin layer is 1.0 N / 15 mm width or less and satisfies the following requirements (1) and / or (2): (1) the second resin layer is a sealant layer including at least a polyethylene layer with a density of 0.909 g / cm3 or less, and the polyethylene layer in the second resin layer is in contact with the first resin layer, and / or (2) the second resin layer is a sealant layer containing a polyolefin as a main component and has a polyolefin content of 82% by mass or more based on a mass of the second resin layer.

There is provided a laminate excellent in abuse resistance and adhesion, and a packaging material, a package, and a packaged article including the laminate. The laminate (10) includes a first substrate layer (1), an anchor coat layer (2), and an inorganic barrier layer (3) in this order, wherein the first substrate layer (1) contains a polyolefin, and the anchor coat layer (2) has a sectional composite elastic modulus in a range of 3.5 to 6.5 GPa and a thickness in a range of 0.4 to 3.0 μm.

To provide a packaging film, a packaging bag, and a packaged product capable of having excellent gas barrier properties while suppressing a decrease in the ratio of polyolefin-based resin in the entire packaging film.SOLUTION: A packaging film includes a gas barrier film, an adhesive layer, and a sealant layer in this order. The gas barrier film includes a base material layer, an anchor coat layer, and a vapor deposition layer in this order. The base material layer includes a polyolefin-based base material layer containing a polyolefin-based resin. The anchor coat layer contains a polyurethane resin and has a thickness of 0.02 μm or more. The adhesive layer is obtained by bonding an adhesive resin composition containing a polyolefin-based adhesive resin to the gas barrier film by melt extrusion. The sealant layer contains a polyolefin-based resin.SELECTED DRAWING: Figure 1

A foil for forming packaging units or housing units, comprising: a coupling layer designed to bond to a metal foil; a core layer having a layer thickness that is greater than at least half the foil thickness, and a sealing layer designed to be in permanent contact with an electrolyte.

This utility model discloses a product packaging bag technology, specifically a sealed packaging bag for disinfection products. It includes a main body serving as the packaging substrate, with ventilation holes on the main body. A label is attached to the main body, corresponding to the ventilation holes. The label comprises a PE film and a dialysis paper layer, arranged sequentially from bottom to top. The label uses a double-layer structure of PE film and dialysis paper, which, together with the ventilation holes, forms an ethylene oxide window, ensuring the entry and exit of ethylene oxide while preventing microbial invasion, achieving highly efficient sterilization. While sterilizing and disinfecting, it also ensures the release of ethylene oxide, reducing ethylene oxide residue.

This utility model relates to the field of vacuum bag technology and discloses a high-temperature resistant and puncture-resistant rice brick vacuum bag, including mounting rings. Two mounting rings are respectively fixedly connected to the upper and lower outer sides of the rice bag. A water bag is fixedly connected to the top inner side of the lower mounting ring, and a base plate is provided at the bottom of the lower mounting ring. A protective plate is fixedly connected to the front and rear sides of the mounting ring. Multiple anti-puncture grooves are opened on the upper and lower outer sides of the protective plate. Water pipes are fixedly connected to the left and right inner sides of the protective plate. The bottom of the water pipes penetrates the protective plate and communicates with the water bag. A positioning component is provided at the top of the rice bag. In this utility model, when the rice bag is placed on the ground, gravity causes the base plate to rise and squeeze the water bag. The water flows along the water pipes inside the protective plate, utilizing the specific heat capacity of water to improve the high-temperature resistance. When the anti-puncture grooves on the outer side of the protective plate are punctured, they can deflect the puncture direction, thereby enhancing the puncture resistance.