2859results about "Sacks" 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 invention discloses a high-barrier antibacterial packaging material, a preparation method thereof and a packaging bag, and belongs to the technical field of packaging, the packaging material comprises the following raw materials by weight: 75-85 parts of polylactic acid, 15-25 parts of poly (butylene succinate), 2-6 parts of epoxidized urushiol, and 1-3 parts of benzyl quaternary ammonium salt modified montmorillonite; the epoxidized urushiol is prepared by carrying out epoxidation reaction on urushiol and organic peroxy acid; the packaging material further comprises the following raw materials: 2-5 parts of sepiolite fiber loaded magnesium oxide; according to the invention, biodegradable polylactic acid and poly (butylene succinate) are taken as base materials, and epoxidized urushiol is taken as a reactive compatilizer, so that the compatibility between polylactic acid and poly (butylene succinate) is improved, and meanwhile, the binding property between a polymer matrix and benzyl quaternary ammonium salt modified montmorillonite and sepiolite loaded magnesium oxide is enhanced; the packaging material with good mechanical property, barrier property and antibacterial property is obtained.

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.

The structure comprises an aluminum foil packaging bag provided with a first hot-press sealing line, the defibrillation electrode slice is packaged in the aluminum foil packaging bag, a wire penetrating opening is formed in one side of the aluminum foil packaging bag, the defibrillation electrode slice is connected with a plurality of strands of wires, and the wire penetrating opening is communicated with the first hot-press sealing line. The outer layer of the plurality of strands of wires is wrapped with a regular-shaped sealing glue layer, and the sealing glue layer is embedded, sealed and fixed in the wire penetrating opening. According to the sealing structure, perfect axial embedment between the sealing structure and the wire penetrating opening is achieved through the sealing glue layer in the regular shape, and the problem that due to the fact that the shape of a wire is irregular, an existing sealing structure cannot be well embedded with the wire penetrating opening, and poor sealing is prone to occurring is solved. In addition, the problem that the production cost is increased due to the fact that irregular wire joints need to be filled with sealants for sealing for many times in the later period can be avoided.

An object of the invention is to provide a resin laminate for packaging material containing a base layer and a sealant layer each of which contains the same material with high processability. The resin laminate for packaging material contains at least a base layer and a sealant layer, wherein each of resin compositions for the base layer and the sealant layer contains the same resin (A) as a main component, the base layer has a fusion initiation temperature (FIT-B), and the sealant layer has a seal strength reaching temperature (SRT-S), wherein the temperatures satisfy the following inequalities of from (1) to (3):50° C.≤(FIT-B)−(SRT-S)≤90° C.  Inequality (1)90° C.≤(SRT-S)≤120° C.  Inequality (2)160° C.≤(FIT-B)≤180° C.  Inequality (3).

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.

The invention discloses an antibacterial sanitary towel packaging bag and a preparation method thereof. The antibacterial sanitary towel packaging bag comprises a base material layer, an antibacterial layer and a leakage-proof layer. The base material layer is prepared by blending modified polylactic acid, polybutylene adipate and the like and contains a degradation accelerant; the antibacterial layer contains antibacterial peptide-loaded nano montmorillonite, chitosan and the like, and loofah sponge fiber enhances slow release; and the leakage-proof layer is an ethylene-vinyl acetate copolymer and modified silicon dioxide blended film and is provided with breathable micropores. The preparation method comprises the steps of forming the base material layer, coating the antibacterial layer and the like, and process parameters of each layer are accurately controlled. According to the packaging bag, through cooperation of three layers, the bacteriostasis rate of the packaging bag on escherichia coli and staphylococcus aureus in 24 hours is higher than 99%, the degradation rate of the packaging bag in 83 days is higher than 88%, the oxygen permeability is 4.5-5.2 cm < 3 > / (m224h 0.1 MPa), and the packaging bag has the advantages of long-acting antibiosis, air permeability, leakage prevention, environmental protection, degradation and good mechanical properties, and meets the storage and use requirements of sanitary napkins.

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.

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.

The invention relates to the technical field of packaging materials, in particular to a preparation method of a food heat-preservation environment-friendly quick-transportation packaging bag. The prepared quick-transportation packaging bag sequentially comprises an outer film layer, a heat preservation layer, an aluminum foil layer and an inner film layer from outside to inside. The outer film layer and the inner film layer are made of a blend of polylactic acid, carboxymethyl starch and glycerol, the thermal insulation layer is formed by compounding a phase change capsule, silicon dioxide aerogel and a polyurethane adhesive on an aluminum foil layer, the phase change capsule takes a mixture of n-octadecane and paraffin as a core material and takes Arabic gum as a wall material, and the outer surface of the wall material is coated with a stearic acid film layer; an antibacterial coating containing microwave modified beewax, a functional additive and 3-aminopropyltriethoxysilane is sprayed on the inner surface of the inner film layer; the prepared quick-transportation packaging bag has excellent heat preservation performance and antibacterial performance, also has good degradability, is environmentally friendly and can meet multiple requirements of modern food logistics for packaging.

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.

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.

The presently disclosed subject matter generally relates to recyclable insulation material for shipping containers, groceries bags, etc., machines for making the recyclable insulation material, and methods for the making the recyclable insulation material. In one aspect, an insulation product may include a first layer and a first continuous paper sheet formed into a first plurality of flexible loops disposed on and attached to the first layer and defining a first plurality of air channels that extend in a direction that is substantially perpendicular with a machine direction of the insulation product. A take up factor of the first continuous paper sheet to the first layer may be greater than 1:1.

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 discloses a preparation method of a woven bag, and the preparation method comprises the following steps: nano reinforced phase pretreatment and master batch preparation, woven cloth layer production, functional layer film co-extrusion, multi-layer compounding process, post-treatment and bag making. In the preparation method, modified nano silicon dioxide and nano calcium carbonate are introduced, so that the tensile strength of the woven bag is improved; wherein the surface of the modified nano silicon dioxide is treated by a coupling agent, strong interface bonding is formed between the modified nano silicon dioxide and a polypropylene matrix, and rigid nano particles effectively bear and disperse stress; nano calcium carbonate is dispersed in polypropylene as a rigid filler, molecular chain slippage is hindered, the material rigidity is improved, and meanwhile the impact resistance of the woven bag is improved through reinforcing phase modification and composite structure design.

A reliable leakage resistant reinforced paper bag having reinforcement strips coupling the two handles and traversing the bag handle sides, spanning the bottom and coupled to the opposite bag side handle while increasing reliability and carrying capacity of the bag.

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.

The invention relates to the technical field of research and development of container liquid bag materials, and discloses a composite film for manufacturing a container liquid bag and a preparation process of the composite film, specifically, on the basis of a Friedel-Crafts alkylation reaction mechanism, phenyl-POSS functional polyethylene and phenyl-POSS functional polypropylene are grafted on the surface of alkenyl functional interlamellar spacing stable montmorillonite, and the composite film is prepared through the following steps: grafting phenyl-POSS functional polyethylene and phenyl-POSS functional polypropylene on the surface of alkenyl functional interlamellar spacing stable montmorillonite; the organic and inorganic hybrid high-strength filler used for modifying the polyolefin matrix is prepared by using the organic and inorganic hybrid high-strength filler, the composite film is prepared through an eleven-layer co-extrusion blow molding process, and the film product meets the technical requirements specified in the standard of TB / T 2689.4-2018 Part 4 of Railway Cargo Containerization Transport: Disposable Container Liquid Container Bag, and can be used as an inner bag material of a disposable Container Liquid Bag.