1625results about "Sacks" patented technology

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 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.

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.

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.

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 present invention relates to a recyclable polyethylene composite film bag for food packaging. The composite film bag comprises at least two layers, i.e. a modified polyethylene layer for printing and a micro-foamed polyethylene layer. Optionally, the composite film bag further comprises an ultralow-temperature heat-sealable polyethylene layer. The micro-foamed polyethylene layer and the ultralow-temperature heat-sealable polyethylene layer each consists of three structural layers, each structural layer being made from a specific raw material in a specific ratio. Also provided in the present invention is a preparation method for the recyclable polyethylene composite film bag for food packaging. The polyethylene composite film bag for food packaging of the present invention has the functions of printing, bearing, moisture resistance, oxygen resistance, heat resistance, puncture resistance and heat sealing, is low-cost and meets environmental protection requirements.

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.

The application discloses a polypropylene woven bag and a preparation method thereof. The polypropylene woven bag is woven by a woven material, and the woven material comprises the following components in parts by weight: polypropylene 90-110 parts, alumina whisker 8-12 parts, carbon nanotube with surface modified polydopamine 0.5-1 part, calcium stearate lubricant 0.5-1 part, ethylene-butyl acrylate-maleic anhydride terpolymer compatibility agent 5-10 parts, and antioxidant 0.3-0.6 part. The preparation method comprises the following steps: adding the components of the woven material into a high-speed mixer, and mixing to obtain a mixture; feeding the mixture into an extruder, and performing melting extrusion, cooling, stretching and setting to prepare polypropylene flat filaments; cross-weaving the polypropylene flat filaments into woven cloth, performing pattern printing on the surface of the woven cloth, and then sequentially performing cutting, sewing or bonding to seal the bottom, so that the polypropylene woven bag is prepared. The polypropylene woven bag obtained by the method has excellent wear resistance and good toughness.

The utility model relates to the technical field of packaging bags, and discloses a portable packaging bag which comprises a packaging bag body, sealing strips are connected to the front end and the rear end of the inner wall of the packaging bag body in an adhering mode, a first handle is fixedly connected to the front end of the packaging bag body, and a second handle is fixedly connected to the rear end of the packaging bag body. The packaging bag body comprises an outer layer, a first thermal insulation layer, a buffer layer and an inner layer. According to the hand-held packaging bag, the air bag of the buffer layer and the polyurethane foam in the buffer layer enable the buffer layer to play a role in heat preservation while buffering, the aluminum foil of the first heat insulation layer is excellent in reflection performance and can reflect a large amount of heat radiation and reduce outward heat dissipation, and the buffer layer and the first heat insulation layer are matched with each other, so that the heat preservation effect of the packaging bag is greatly improved; the outer layer and the inner layer are both made of recycled paper, the recycled paper is low in manufacturing cost and has a certain waterproof effect, the waterproof function can be achieved on the premise that the strength is guaranteed, and the packaging bag is more energy-saving and environmentally friendly.

A zipper closure includes mating first and second profiles, which releasably interlock along a parting line along the side. A slider can be used to open and close the slider. The slider has a channel, which receives an ear on the second profile, and the ear rides through the ear-receiving channel to align engaging structure of the first and second profiles and roll them together into interlocked engagement. The slider has a splitter on a deflectable tab, which can be pressed into a notch on the zipper closure to initially separate the mating profiles, while moving the slider to direct the ear into an ear-receiving channel in the slider and deflect the ear to a side and pry open and separate the profiles.

An article (50) is configured for application to an item (54). The article (50) includes a substrate strip (58) and an adhesive layer (66). The substrate strip (58) has opposed first (60) and second (62) major surfaces, opposed first and second ends along a length of the substrate strip (58), and a first width orthogonal to the length. The adhesive layer (66) is disposed on the second major surface (62) and has a second width. A first portion of the adhesive layer (66) is configured for attachment to the item (54), a second portion of the adhesive layer (66) is configured for attachment to a seal portion (68) of the substrate strip (58), and a terminal flap (70) at each of the first and second ends has a non-adhesive inner surface and a non-adhesive outer surface (60).

The utility model relates to the technical field of environment-friendly paper bags, in particular to a triangular supporting heavy-pressure-resistant environment-friendly paper bag which comprises an environment-friendly paper bag body, a triangular reinforcing structure is bonded to the lower end of the environment-friendly paper bag body and comprises a reinforcing plate, a bending groove is formed in the reinforcing plate, and first circular grooves are symmetrically formed in the reinforcing plate. The environment-friendly paper bag comprises an environment-friendly paper bag body, two first circular grooves are formed in the surface of the environment-friendly paper bag body, the two first circular grooves communicate with a bending groove, first rope sections are arranged in the two first circular grooves, fixing blocks are symmetrically bonded to the surface of the environment-friendly paper bag body, and a second rope section is fixedly installed between the two first rope sections. According to the environment-friendly paper bag, the second rope section can be located on the surface of the environment-friendly paper bag body in a triangular shape by partially winding the second rope section in the arc-shaped groove of the fixing block above the reinforcing plate, the overall structural strength of the environment-friendly paper bag body can be enhanced by utilizing the stability of the triangle, and the stretching resistance and the tearing resistance of the environment-friendly paper bag body are improved.

The utility model relates to a novel vacuum heat preservation food bag, which belongs to the technical field of food bags and comprises a heat preservation bag, openings are arranged at the top of the heat preservation bag, and a sealing structure is arranged between the openings on two sides. The food packaging bag has the advantages that the sealing structure is arranged, the packaging bag is opened, food is taken out and put in, openings in the two sides are squeezed, so that the clamping columns are accurately embedded into the cylindrical grooves for sealing, meanwhile, the first embedding strip and the second embedding strip are embedded and clamped, double clamping sealing is adopted, the sealing effect is enhanced, gaps are not prone to occurring at the openings, and the sealing effect is improved. Air, external dust and the like are prevented from entering the heat preservation bag, food can be better stored, food deterioration is prevented, the filling strips and the bonding strips are adopted, the attaching effect of openings in the two sides of the heat preservation bag is better, meanwhile, the cooling structure effectively inhibits microorganism breeding, and the heat preservation effect is improved. The cold insulation effect and the high sealing performance of the heat preservation bag on food can be improved, and freshness and nutrition of the food are maintained.

The invention relates to the field of plastic products and preparation, and particularly discloses a breathable stretch-resistant flat pocket and a preparation method thereof. The breathable stretch-resistant flat bag comprises a high-density polyethylene-polypropylene composite film, a nanofiber net and linear low-density polyethylene which are sequentially compounded, wherein the nanofiber net is a PET nanofiber net; in addition, the preparation method has the advantages that the tensile property of the pocket is improved, and the air permeability of the pocket is not affected.

The utility model belongs to the technical field of transparent film bags, and discloses a transparent film bag with a diaphragm structure, which comprises a transparent film bag body, the upper parts of the inner walls of the two sides of the transparent film bag body are jointly provided with a pressing and sealing strip, the inner surface of the transparent film bag body is provided with a diaphragm mechanism, and the diaphragm mechanism comprises a contact layer. The membrane mechanism comprises a contact layer, a barrier layer and a protective layer, one side of the contact layer is provided with a transition layer, one side of the transition layer is provided with the barrier layer, one side of the barrier layer is provided with the adhesive layer, and one side of the adhesive layer is provided with the protective layer. Under the action that the blocking layer effectively blocks external factors such as air and moisture and the protection layer protects the internal structure from being damaged, the protection function of the film bag is enhanced, the requirement for all-around protection of articles is met, and the articles are prevented from going bad and being damaged.

A bag body of the three-dimensional bag comprises a bottom face located at the bottom of the bag body in the height direction, a pair of front faces and a pair of side faces, the front faces and the side faces are erected on the peripheral side of the bottom face, the front faces are arranged in the width direction of the bag body at intervals, and the side faces are connected with the edges of the two sides of the front faces respectively. The upper end of each front face is provided with a first bag opening folding edge which is bent towards the inner surface of the corresponding front face, and the upper end of each side face is provided with a second bag opening folding edge which is bent towards the inner surface of the corresponding side face. A guide notch extending in the height direction is formed in a folding edge bending part, extending in the height direction, of the first bag opening folding edge and the second bag opening folding edge, and the guide notch extends towards the bag opening of the three-dimensional bag from the lower end of the folding edge bending part in the height direction. According to the three-dimensional bag, the strength of the bag opening can be enhanced, and the guiding notch is ingeniously formed between the first bag opening folding edge and the second bag opening folding edge, so that the problem of material stacking at the corner of the bag opening in the folding process is solved.

A container formed entirely of elastomer comprises a body including a front wall and a rear wall connected to the front wall along its periphery. The container further comprises a closure system including a front side having a male closure profile containing a male closure element and a rear side having a female closure profile. The female closure profile includes a female closure element and defines a cavity. A centerline extends through the cavity such that the female closure element is symmetrical with respect to the centerline. The male closure element includes a head portion having a primary profile and a secondary profile extending from the primary profile. The height of the secondary profile, measured perpendicular to the centerline, is greater than the height of the primary profile, measured perpendicular to the centerline.

Bag, in particular garbage bag, comprising a bag body (2) made of a film of plastic and / or paper and a carrier (18) in the form of a planar structure (19) with a large surface area (21) with an odor-controlling substance (22) on the surface (21), wherein the bag body (2) comprises two side walls (3, 4) which define an opening (16) with their upper edge, are connected to each other at their lateral edges by lateral weld seams (7, 8) and at their lower edge by a bottom or other closure (17) and the carrier (18) is arranged in and attached to the bag body, characterized in that the carrier (18) is arranged in a strip shape and in the upper half of the bag body (2).

A gas-permeable film of the present disclosure includes a first polymer layer, a second polymer layer, and a third polymer layer interposed between the first polymer layer and the second polymer layer, wherein the third polymer layer includes polypropylene and polytetrafluoroethylene at a weight ratio of 9:1 to 1:9. The gas-permeable film has excellent gas permeability, and thus, when applied to a secondary battery, the gas-permeable film may effectively discharge a gas generated inside the secondary battery.

The invention relates to the technical field of packaging bags, in particular to an attached instant soup packaging bag which comprises an upper side edge, a side connecting edge, a lower side edge, a bottom sticking part, a crossed supporting strip, a connecting supporting part, a top end folding edge, a top sticking part and a bottom edge. The side connecting edge, the lower side edge, the bottom edge, the bottom pasting part, the connecting supporting part, the upper side edge, the side connecting edge, the connecting supporting part and the top end folding edge define a containing cavity structure; the bottom edges are connected between the bottoms of the lower side edges on the two sides, the bottom pasting part is connected between the two bottom edges, and the bottom edges and the bottom pasting part jointly form a bottom structure of the packaging bag. According to the attached instant soup packaging bag, the bottom pasting part and the top pasting part are attached to the inner wall of a carton after being automatically unfolded, friction and collision between the packaging bag and the carton are effectively avoided, the damage risk is remarkably reduced, when the packaging bags extrude one another, the overall height is actively reduced, and the problem that boxing and sealing are affected due to volume expansion is solved.

A polymeric material is provided that includes a modified polyvinyl polymer having a polyvinyl chain including one or more units having moieties produced by reaction of a reactant with a polyvinyl alcohol. A method of making a modified polyvinyl polymer includes reacting a polyvinyl alcohol with one or more reactants in the presence of a solvent. Packaging includes a polymeric material including a modified polyvinyl polymer.

The utility model discloses a packaging bag designed according to the 3R concept, which comprises a first thin film material, a second thin film material and a non-woven fabric material, the non-woven fabric material and the first thin film material are bonded through sealing and ironing, and a plurality of independent dry moisture absorbent packaging cavities are formed between the middle part of the inner side of a bag body and the bag bottom. The side, close to the bag bottom, of the dry moisture absorbent packaging cavity is sealed through a first clamping chain so that the dry moisture absorbent can be conveniently replaced, the second thin film material and the first thin film material of the sealed non-woven fabric material can be sealed and bonded to form a product containing cavity, and the end, opposite to the bag bottom, of the second thin film material is not sealed to form a bag opening. According to the packaging bag designed according to the 3R concept, multiple contradictions between functionality and environmental protection of traditional moisture-proof packaging are successfully solved, the 3R principle is integrated into packaging design, and the unification of reduction, reutilization and recoverability is achieved through an independent cavity, a replaceable structure and a single material system.

The utility model relates to packing bag technical field especially has a packing bag with safety buckle, including the bag body, the top one side symmetry of bag body is provided with first fixed block, one end of first fixed block is provided with first pivot, the outside fixed connection of first pivot has second clamping block, the top of second clamping block is provided with second clamping slot, the first clamping block of inbuilt snap -on connection has the adaptation in second clamping slot, the bottom of first clamping block is provided with the first clamping slot of adaptation with second clamping block. The utility model discloses through the mutual snap -on of first clamping block and second clamping block to the first folding bag body is fixed, cooperation magnetism suction piece that sets up inside the spacing piece inside simultaneously fixes the first folding bag body of both sides together, plays the closure to bag body, can prevent the bag body to incline and the object in the bag falls, also prevents the object from being exposed to the outside and being affected article security because the bag body top mouth is always open simultaneously, and this structure design is simple, and the loading and unloading are convenient.