3262results about "Containers preventing decay" patented technology

The invention discloses a heat preservation box and processing equipment thereof, and belongs to the technical field of heat preservation boxes. The heat preservation box comprises a box body and a box cover, the box body is formed by wrapping a heat preservation layer with an inner shell and an outer shell, and the heat preservation layer is wrapped with a box cover shell. An aerogel groove and a vacuum plate groove which are overlapped are formed in the heat preservation layer and filled with aerogel particles and a vacuum heat insulation plate respectively, and the surface of the heat preservation layer is sprayed with a nanometer aerogel coating and provided with a reflecting film. The box body is connected with the box cover through a supporting hinge, and is provided with a supporting piece, a roller, a limiting sinking groove, a flow guide channel and a residual volume space measuring system. The processing equipment comprises a bracket, a rotary power source, a rotary platform, a vibration unit and a filling device, and can realize uniform filling and compaction of aerogel particles. The problems that a traditional heat preservation box is poor in heat preservation performance, pressure is accumulated, and transportation is inconvenient are solved, and the heat preservation box is suitable for cold-chain transportation and other scenes.

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.

A preparation method of a bacteriostatic and antioxidant zein / hyaluronic acid degradable preservative film relates to the field of foods.The method comprises the steps that a zein-hyaluronic acid solution and a citrus polyphenol solution are mixed, distilled water is dropwise added, vacuum concentration is performed, the mixture is mixed with a laminarin solution, auxiliary materials are added, uniform mixing, bubble removing and film preparing are performed, and the preservative film is obtained. After drying, obtaining a zein-HA film of laminarin and citrus polyphenol; or mixing the zein-hyaluronic acid solution with the moringa oleifera leaf extract powder, dropwise adding distilled water, concentrating under reduced pressure, mixing with the laminarin solution, adding the sodium alginate solution and auxiliary materials, defoaming, pouring to form a film, and drying to obtain the zein-HA film of the laminarin and the moringa oleifera leaf extract. The synergistic effect among the substances of the protein film can effectively improve the fresh-keeping effect of the composite film, and the release property of the composite film can further improve the fresh-keeping effect on fresh-cut food.

The invention discloses a natural eutectic solvent enhanced konjac glucomannan film as well as a preparation method and application thereof, and belongs to the technical field of food packaging. The konjac glucomannan film enhanced by the natural deep eutectic solvent, provided by the invention, comprises konjac glucomannan, the natural deep eutectic solvent and gallic acid modified MXene nanoparticles; the mass ratio of the konjac glucomannan to the natural eutectic solvent to the gallic acid modified MXene nanoparticles is (850 to 950) to (50 to 250) to (10 to 40). Through the synergistic effect of all the components, the defects that KGM is insufficient in intrinsic mechanical strength, weak in antibacterial and antioxidant performance and poor in moisture resistance are overcome, the comprehensive performance of the film is remarkably improved, and the film can be used for cold-chain packaging of high-value fresh food and has environment friendliness and functional practicability.

A contact lens packaging container and a contact lens product are provided. The contact lens packaging container is formed by a plastic material and a color powder material dispersed in the plastic material. The contact lens packaging container has a light blocking rate of not less than 20% under a wavelength measurement range between 380 nanometers and 780 nanometers through a spectrophotometer.

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 invention provides a storage system for immunofluorescence slide glass and an intelligent temperature and humidity coupling control method thereof. The system comprises a closed sample cabin, a controller, a passive buffer layer and other structures, and the temperature and humidity in the cabin can be stably controlled in a dynamic environment. The temperature and humidity in the cabin and the temperature of the key cold surface are monitored in real time through the sensing unit, the local dew point is calculated, and temperature and humidity control is executed. And the controller executes a layered gradient coupling control algorithm according to the dynamic dew point safety margin to ensure accurate control of temperature and humidity. The passive buffer layer is of a composite structure of a phase change material and a moisture absorption material, and the temperature and humidity are adjusted through solid-liquid phase change and molecular adsorption. The system can effectively improve the storage stability and safety of the immunofluorescence slide, and is suitable for sample storage management in industries such as life science and biological pharmacy.

Systems and methods for providing compostable food containers, which preserve the quality of a food product for an extended duration of time, and which optionally, allow for cooking of the food product therein. In some implementations, the food containers are sturdy, stackable, insulating, and require minimal or no manual labor to assemble. In some implementations, the food container includes a base and a cover, which cooperate to form a closed chamber for supporting, protecting, insulating and optionally cooking a food product, such as a pizza. The base and cover may each be formed of a single layer of material including, but not limited to, molded sugarcane fiber (“bagasse”), molded wood fiber, molded bamboo fiber, molded paper or plastic.

The invention discloses a propolis ethanol extract loaded ZIF-8 cellulose starch-based sustained-release film and a preparation method thereof, and belongs to the technical field of food preservative films. The propolis ethanol extract loaded ZIF-8 cellulose starch-based sustained release membrane is prepared from the following raw materials in parts by weight: 30 to 70 parts of starch, 30 to 70 parts of cellulose nanofiber, 7.5 to 17.5 parts of glycerol and 4 to 8 parts of filler. The starch wastewater is used as a starch raw material source, and the cellulose nanofibers loaded with ZIF-8 by the propolis ethanol extract are added, so that the prepared slow-release film is high in strength and good in toughness, can be naturally degraded after being used, reduces environmental pollution, ensures the safety of the product, has antibacterial and antioxidant effects, provides benefits for fresh keeping of fruits, and has a wide application prospect. Meanwhile, a new thought is provided for resource utilization of the starch wastewater.

The invention discloses an after-finishing method applied to a buccal nicotine product production process and the buccal nicotine product production process, the after-finishing method comprises the following steps: obtaining a newly produced first nicotine product, the water content of the first nicotine product being lower than the factory target water content; loading a preset number of first nicotine products into a preset sealed container; arranging a humidifying bag in the sealed container and then sealing the sealed container; the sealed container is stored at normal temperature, the first nicotine product is moistened to the target water content within the preset time range to form a second nicotine product, and the water activity in the sealed container is kept within the preset water activity range. On the premise that the factory water content standard of nicotine products is not changed, the initial water content of the formula is reduced in the production and packaging stage, so that the productivity and the packaging qualification rate are improved; and after sealing, a target value is reached within several days, so that the overall manufacturing cost and the consistency risk are reduced.

Systems and methods for providing compostable food containers, which preserve the quality of a food product for an extended duration of time, and which optionally, allow for cooking of the food product therein. In some implementations, the food containers are sturdy, stackable, insulating, and require minimal or no manual labor to assemble. In some implementations, the food container includes a base and a cover, which cooperate to form a closed chamber for supporting, protecting, insulating and optionally cooking a food product, such as a pizza. The base and cover may each be formed of a single layer of material including, but not limited to, molded sugarcane fiber (“bagasse”), molded wood fiber, molded bamboo fiber, molded paper or plastic.

The utility model relates to the technical field of battery transportation, and provides an embedded type packaging box suitable for battery transportation, which comprises a box body and further comprises two first clamping plates symmetrically and movably arranged in the box body. According to the lithium battery clamping device, the first electric telescopic rod is controlled by the controller to be started, the output shaft of the first electric telescopic rod drives the second clamping plates to move towards the middle along the interior of the second sliding groove, the two sides of a lithium battery are limited and clamped, then the rotary knob is rotated by hands, the two first clamping plates can move in the opposite directions, and the other two sides of the lithium battery are limited and clamped; the lithium batteries are protected under the cooperation of the first elastic rubber pad and the second elastic rubber pad, so that the lithium batteries with different sizes can be conveniently clamped and fixed, and the lithium batteries can be prevented from being collided in the box body when the box body shakes due to bumping in the transportation process; therefore, the lithium battery is prevented from being damaged or spontaneously combusted, and the transportation safety of the lithium battery is improved.

The invention discloses an anti-ultraviolet, antibacterial, antioxidant and high-light-transmittance food packaging film, and belongs to the field of food packaging materials, and the anti-ultraviolet, antibacterial, antioxidant and high-light-transmittance food packaging film comprises 40-60 parts of a chitosan solution; 40-60 parts of a gelatin solution; 0.01 to 0.2 part of nitrogen-doped carbon quantum dots; 0.001 to 0.02 part of an antibacterial agent; the invention further discloses a preparation method of the food packaging film. The preparation method comprises the following steps: S1, preparing a chitosan solution; s2, preparing a gelatin solution; s3, preparing nitrogen-doped carbon quantum dots; s4, the chitosan solution, the gelatin solution, the nitrogen-doped carbon quantum dots and the antibacterial agent are mixed and dried, and the multifunctional food packaging film is prepared. Generally speaking, the transparency of the food packaging film is greatly reduced while the ultraviolet barrier property of the food packaging film is improved. The nitrogen-doped carbon quantum dot disclosed by the invention has excellent absorption performance on ultraviolet light in a range of 200-400nm, almost has no absorption on visible light of 400nm or above, and has excellent oxidation resistance. The food packaging film prepared by the invention not only has excellent ultraviolet blocking capability and high visible light transmittance, but also has remarkable antibacterial and antioxidant characteristics, and shows an excellent fresh-keeping effect on strawberries and fresh-cut apples.

The invention belongs to the technical field of food packaging and fresh-keeping materials, and discloses an ethylene adsorption and pH / pectinase double-response intelligent antibacterial composite film as well as a preparation method and application thereof. The composite film comprises a base film and a functional carrier distributed in the base film, the functional carrier is a material ZIF-8-cinnamyl aldehyde-pectin capable of adsorbing ethylene and responding to pH and pectin, and the base film comprises a film-forming polymer and a natural antibacterial agent. According to the composite film, efficient adsorption of ethylene released in the storage period of fruits and vegetables is achieved through a porous structure of ZIF-8, meanwhile, a synergistic effect is formed by an acid environment naturally generated in the fruit and vegetable ripening and rotting process and pectinase, and intelligent slow release of cinnamyl aldehyde loaded on ZIF-8 is accurately triggered; cinnamyl aldehyde can form a double-channel intelligent antibacterial system with the natural antibacterial property of chitosan in a film base material and the metal ion antibacterial property of ZIF-8, maturation and aging of typical respiratory climacteric fruits and vegetables can be remarkably delayed, and the antibacterial film has extremely high industrial application potential.

The present disclosure relates to an electronic smoking article comprising: a housing having an air inlet adapted for entry of air into the housing and an air outlet adapted for exit of a formed aerosol, the inlet and the outlet having an air passage therebetween; a reservoir within the housing that is configured to hold an aerosol precursor fluid; a heater in fluid communication with the reservoir; and one or both of a first check valve positioned at the air inlet and a second check valve positioned at the air outlet.

The invention discloses a high-barrier degradable vegetable and fruit preservative film based on multi-layer compounding and a preparation method thereof, belongs to the technical field of food packaging materials, and aims to solve the technical problem that the barrier property, the mechanical property and the antibacterial property of the degradable vegetable and fruit preservative film in the prior art need to be further improved. The degradable vegetable and fruit preservative film comprises a first layer, a second layer and a third layer which are sequentially laminated, and the first layer is prepared from, by weight, 65-75 parts of polylactic acid, 4-8 parts of maleic anhydride grafted polylactic acid, 2-4 parts of modified carbon nitride, 1-3 parts of alizarin microcapsules, 3-6 parts of modified lignin and 1-2 parts of auxiliary additives; through the synergistic effect of the modified carbon nitride, the alizarin microcapsules and the modified lignin, the barrier property, the mechanical property and the antibacterial property of the degradable vegetable and fruit preservative film are further improved.

The utility model relates to a material box purifying device which is used for purifying a material box, the material box is provided with an air inlet for air to enter, and the material box purifying device comprises a bearing frame, a material box and a purifying device, the purification unit comprises an air source treatment assembly and at least one supporting assembly used for bearing the material box, the supporting assembly comprises a bottom supporting plate, an air outlet and a device mounting box, the material box is placed on the bottom supporting plate, at least two ends of the bottom supporting plate are folded upwards to form limiting plates, and the device mounting box is arranged on the bottom supporting plate. The material box can be limited on the limiting plate; the gas inlet is in butt joint with the gas outlet, so that the gas enters the gas inlet from the gas outlet. According to the material box, quantitative clean and dry air can be introduced into the air inlet of the material box, so that gas in the material box is purified, the process requirement is met, the purification efficiency of the material box can be effectively improved, and a good purification effect is ensured.

The invention relates to the technical field of fresh-keeping packaging of brasenia schreberi tender shoots, in particular to a fresh-keeping packaging method and system for brasenia schreberi tender shoots. The method comprises the following steps: pretreating brasenia schreberi tender shoots to induce pore closing of the brasenia schreberi tender shoots; performing glue protection treatment to form a composite glue protection film on the surfaces of the tender shoots; loading the treated brasenia schreberi tender shoots into a tender shoot packaging box integrated with a controlled atmosphere microcapsule release unit, and sealing, so as to realize shape integrity preservation of the brasenia schreberi tender shoots; sequentially carrying out water bath and ultrahigh pressure sterilization on the sealed tender shoot packaging box; and finally, refrigerating to realize fresh-keeping packaging of the brasenia schreberi tender shoots. On the basis of a box body structure of a multi-layer composite structure, in cooperation with an inner wall anti-sticking design and a built-in controlled atmosphere microcapsule release unit system, morphological integrity preservation of brasenia schreberi tender shoots is achieved, non-acidification and chemical preservative-free high-quality preservation can be achieved in combination with glue protection treatment and gradient physical sterilization of the brasenia schreberi tender shoots, and the preservation effect of the brasenia schreberi tender shoots is improved. And the colloid retention rate is greater than 95%.

A surface cleaning apparatus includes a momentum separator, which includes an outer liquid collection chamber and an inner solid collection chamber that is positioned within the outer liquid collection chamber and separated from the outer liquid collection chamber by an inner chamber wall. At least a portion of the inner chamber wall is porous. The air flow path comprises an inlet conduit that extends from the dirty air inlet to the inner solid collection chamber, and a downstream air flow path extends from the inner solid collection chamber to a suction motor and the porous portion of the inner chamber wall connects the inner solid collection chamber in fluid communication with the downstream air flow path. Air travelling through the inlet conduit enters the inner solid collection chamber in a first flow direction and air exits the inner solid collection chamber is a second, different flow direction.

The invention discloses a use of a polylactic acid active packaging film in the preservation of B. cerana. The polylactic acid active packaging film is prepared by using an Ag@MOF carrier to load a natural antibacterial agent, which is then fully mixed with polylactic acid and then melt-extrusion blow molding. The packaging film is used to package the B. cerana to achieve active packaging of the B. cerana, inhibit the growth of microorganisms, and extend the shelf life of the B. cerana. The preservation method has a simple process and is easy to operate. The materials used are biodegradable, reducing environmental pollution caused by packaging. The natural antibacterial agent, Litsea cubeba essential oil, is added to the preservative film, which can effectively inhibit the growth and reproduction of major spoilage bacteria isolated and identified from the B. cerana. The Ag@MOF is used to load the Litsea cubeba essential oil, which can effectively control the release rate of the Litsea cubeba essential oil, achieving long-lasting antibacterial and antioxidant purposes. The preservation method can effectively extend the storage period of the B. cerana.

The invention relates to a fruit and vegetable packaging box and a fruit and vegetable packaging method.The fruit and vegetable packaging box comprises a heat preservation box body, a heating part and a water absorption part, the heat preservation box body comprises a box body and a cover body, a containing cavity with an opening in one side is formed in the box body, and the cover body detachably covers the opening of the box body to seal the containing cavity; the bottom of the box body is provided with an air hole penetrating to the bottom of the containing cavity, and the heating piece and the water absorption piece are arranged at the bottom of the containing cavity. According to the fruit and vegetable packaging box and the fruit and vegetable packaging method, through the combined packaging mode that the heating piece, the water absorption piece and the air holes in the bottom of the containing cavity of the box body are arranged in the packaging box body, the temperature and humidity of fruit and vegetable products are guaranteed when the fruit and vegetable products are conveyed to a high-temperature area with the large temperature difference in a low-temperature area, and the freezing damage rate of the fruit and vegetable products is remarkably reduced.

The present invention relates to a method for manufacturing a barrier-coated substrate web, coated with a layer of reduced graphene oxide. The invention further relates to laminated packaging materials comprising the barrier-coated substrate web, in particular intended for liquid carton food packaging, and to liquid carton packaging containers comprising the laminated packaging material.

The present invention generally relates to packaging systems embedded with adsorbent materials, more particularly, it relates to materials used in packaging of pharmaceuticals for actively adsorbing volatile compounds and moisture.

To provide a technology relating to a packaging bag that can suppress deformation of a through slit (S). [Solution] The packaging bag 100 of the present invention has a main body 10 that contains the contents and an opening 20 through which the contents are put in and taken out, the main body 10 being made of a synthetic resin film, the main body 20 having a through slit (S), and when the direction in which the opening 20 widens is the horizontal direction and the direction perpendicular to the horizontal direction is the vertical direction, the through slit (S) has both a through slit (Sa) that is not parallel to the vertical direction and a through slit (Sb) that is not parallel to the horizontal direction (however, the through slit (Sa) and the through slit (Sb) may be the same or different).

The utility model relates to the technical field of storage and transportation boxes, in particular to a storage and transportation box suitable for powder materials, which comprises a box body, a cover plate, a rubber block and a bottom reinforcing plate, the side wall of the box body is sequentially provided with an outer wall, a partition cavity and an inner wall provided with air holes from outside to inside, and a drying agent bag is detachably placed in the partition cavity. A protrusion is arranged below the rubber block at the opening of the partition cavity, a clamping groove is formed in the rubber block, a cover plate covers the box body, and idler wheels are symmetrically arranged on the two sides of a bottom reinforcing plate below the box body. The drying agent bag is placed between the outer wall and the inner wall provided with the air holes, the drying agent bag can dry the powder material container bag in the box body through the inner wall provided with the air holes, the drying agent bag in the partition cavity can be replaced by detaching the rubber block, the idler wheels are arranged on the lower portion of the box body, and therefore the drying agent bag can be conveniently replaced. And the cover plate is provided with the grooves for accommodating the rollers to prevent the rollers from rolling, so that the stability is improved when a plurality of box bodies are stacked, the space is saved, and the safety is also improved.

The invention belongs to the technical field of food packaging materials, and particularly relates to a preparation method and application of a chitosan-gelatin-tea polyphenol composite preservative film. The invention discloses a chitosan / gelatin / tea polyphenol composite membrane which is prepared by taking chitosan and gelatin as matrixes and tea polyphenol as an active additive through a film casting method. When the addition amount of the tea polyphenol is 1.5%, the comprehensive performance of the composite film is optimal, the ultraviolet light transmittance is as low as 0.113%, and the antibacterial rates on escherichia coli and staphylococcus aureus respectively reach 73.34% and 99.78%. When the strawberry preservative is applied to strawberry preservation, the mass loss rate is only 15.27% after 11 days, the sensory quality is well kept, and the shelf life is prolonged by 4 days. The composite film has excellent antibacterial and fresh-keeping performance, the raw materials are natural and degradable, and the composite film has wide application prospects in the field of fruit and vegetable fresh-keeping.