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5445results about "Bio-packaging" patented technology
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Large-size green packaging carton and preparation process thereof
The invention discloses a large-size green packaging carton and a preparation process thereof, and relates to the field of packaging box preparation. The environment-friendly composite material comprises the following raw materials in parts by weight: 50-80 parts of plant fiber slurry, 10-25 parts of a modified starch-based adhesive, 5-15 parts of a nanoscale inorganic reinforcing filler, 1-5 parts of a degradable water repellent agent, 0.5-3 parts of a cross-linking agent and 2-8 parts of starch and plant fiber composite buffer microspheres. According to the preparation method, full-environment-friendly raw materials such as plant fiber slurry and a modified starch-based adhesive are selected and matched with starch and plant fiber composite buffer microspheres, and optimized processes such as segmented temperature control pressurization molding, adhesive gelatinization treatment, stirring speed reduction and microsphere structure protection are combined; and through coating of the degradable polymer coating and micron-sized hydrophobic texture imprinting, synergistic improvement of high compressive strength, excellent buffering performance, excellent hydrophobic and damp-proof effects and high degradation rate of the carton is achieved.
Owner:ZHEJIANG DELI PACKAGING CO LTD
Degradable bamboo fiber express packaging bag and preparation method thereof
The invention discloses a degradable bamboo fiber express packaging bag and a preparation method thereof, and belongs to the technical field of express packaging. The packaging bag is prepared from, by mass, 32-42 parts of pretreated bamboo fibers, 22-28 parts of poly (butylene succinate), 9-14 parts of modified nano calcium carbonate, 12-16 parts of polycaprolactone, 6-11 parts of acetylated chitosan and the like, and the key raw materials are all treated through an exclusive pretreatment or modification process. The preparation method comprises the steps of raw material plasma activation, segmented high-speed mixing, vacuum drying, precise-parameter twin-screw extrusion granulation, secondary drying, precise film blowing, high-precision heat-sealing bag making and the like, and the technological parameters of all the steps are clear. The product disclosed by the invention can be efficiently degraded in a natural environment, has excellent tensile resistance, puncture resistance and impact resistance, is stable and controllable in processing process, and is adaptive to actual requirements of express packaging and industrial batch production.
Owner:FUJIAN MANSHANHONG NEW MATERIAL TECH CO LTD
Bio-based barrier coating for fresh keeping of paper-based beverage as well as preparation method and application of bio-based barrier coating
The invention discloses a bio-based barrier coating for fresh-keeping of paper-based beverages as well as a preparation method and application of the bio-based barrier coating, and belongs to the technical field of paper-based packaging materials for foods and beverages. The coating is a water-based emulsion, and the core solid components of the coating comprise polyhydroxyalkanoate, polyethylene furandicarboxylate, aliphatic polyester, a polyisocyanate cross-linking agent, a nanofiller, a surfactant and a plasticizer. An emulsion is prepared through melt crosslinking and high-shear emulsification, and a dry film is formed through curtain coating and orientation. The film has excellent oxygen and water vapor barrier properties, can be heat-sealed and re-pulpified, and can be biodegraded in industrial compost, household compost and marine environments. According to the preferred embodiment, the bio-based content can be higher than 99%, aluminum foil can be replaced to be used for 60-day fresh-keeping beverage packaging, carbon footprint is reduced, and the recovery value is improved.
Owner:DU BAI CHENG NEW MATERIAL TECH (SHANGHAI) CO LTD +2
Environment-friendly high-barrier packaging paper and preparation method thereof
The invention discloses environment-friendly high-barrier packaging paper and a preparation method thereof, and belongs to the technical field of paper product manufacturing. The method comprises the following steps: dispersing bleached sulfate softwood pulp in an aqueous solution of TEMPO and NaBr, adding a NaClO solution, adjusting the pH value, carrying out a reaction, washing the product obtained by the reaction, and carrying out high-pressure homogenization to obtain TEMPO oxidized nanocellulose (TOCNF); mixing the bleached sulfate softwood chemical pulp, hardwood pulp and viscose fibers, pulping, papermaking and the like to obtain original paper; then, TOCNF and waterborne epoxy modified acrylic emulsion are mixed, and a mixed coating is prepared; and finally, coating the surface of original paper with the coating according to a certain mass ratio, and carrying out hot-pressing curing to obtain the environment-friendly high-barrier packaging paper. The packaging paper is excellent in mechanical property, high in barrier property, good in surface uniformity and printing property, environment-friendly and degradable in raw materials, simple to prepare and low in cost.
Owner:GUANGDONG YINGTONG PAPER CO LTD
Pill dispenser
A pill dispenser includes a dispenser body, a pill dispensing cover, and a pill outlet cover. The dispenser body is hollow. A fixed cylinder is disposed at a center of the dispenser body. Partition plates are connected between the fixed cylinder and the dispenser body to define pill cavities. The partition plates are disposed in a circumferential array. At least one end of each of the partition plates extends out of the dispenser body. Clamping grooves are defined in the pill dispensing cover. A periphery of each of the partition plates is clamped in a corresponding one of the clamping grooves, so the pill dispensing cover is fixed to the dispenser body. The pill dispensing cover includes pill dispensing openings one-to-one corresponding to the pill cavities. When the pill dispensing cover is fixed to the dispenser body, each of the partition plates abuts against the pill dispensing cover.
Owner:XIWING E COMMERCE ZHUHAI CO LTD
Cerium dioxide nano-enzyme modified antibacterial coating and application thereof in food packaging
The invention relates to the technical field of food packaging materials, in particular to a cerium dioxide nano-enzyme modified antibacterial coating and application of the cerium dioxide nano-enzyme modified antibacterial coating in food packaging. The biomimetic mineralization layer comprises the following components in percentage by weight: 35-45% of a green base material, 8-12% of dopamine modified yttrium-doped cerium dioxide nano-enzyme, 4-6% of a composite antibacterial agent, 3-4% of a natural cross-linking agent, 2-3% of a degradable plasticizer, 1-2% of a biomimetic mineralization layer precursor and the balance of deionized water, the green base material is a blend of a chitosan-polyethylene glycol graft and polylactic acid; the doping amount of Y3 in the nano enzyme is 3-4at%. The antibacterial agent is excellent and lasting in antibacterial effect, has no migration risk of the antibacterial agent, and can guarantee food safety; a green base material and a degradable plasticizer are adopted, so that natural degradation is realized, and environmental pollution is avoided; the mechanical property is good, the aging resistance is realized, and the oxygen barrier property is strong; the food packaging box is suitable for various foods, effectively prolongs the shelf life, and meets the requirement of green packaging.
Owner:HUNAN INSTITUTE OF ENGINEERING
Biomass-based oil-resistant coating and preparation method thereof
The invention relates to the field of coatings, and discloses a biomass-based oil-resistant coating and a preparation method thereof, the coating comprises an additive solution, a paraffin solution and gallic acid; the paraffin solution is obtained by dissolving paraffin in absolute ethyl alcohol; a preparation method of the additive solution comprises the following steps: mixing chitosan powder and an acetic acid aqueous solution to prepare a chitosan solution, ultrasonically dispersing functionalized montmorillonite in deionized water to prepare a suspension, then uniformly mixing the chitosan solution and the suspension, adding modified phytic acid prepared by grafting phytic acid and ethylene glycol diglycidyl ether, and stirring to react; the functional montmorillonite is prepared by modifying modified montmorillonite with titanium dioxide and zinc oxide, then activating the modified montmorillonite with 3-aminopropyltriethoxysilane and succinic anhydride, and then carrying out a ring-opening reaction with glycidyl neodecanoate. The coating prepared by the invention has high water resistance, the Kit oil-proof grade is kept at grade 12, and the oil-proof performance of the coating is greatly improved. Meanwhile, the antibacterial performance, the tensile index and the ultraviolet aging resistance are relatively high.
Owner:GUANGDONG BOHAI CHEM TECH CO LTD
Water-based PHA (Polyhydroxyalkanoate) coating and PHA extrusion layer compounded paper-based high-barrier material as well as preparation method and application thereof
The invention discloses a water-based PHA (Polyhydroxyalkanoate) coating and PHA extrusion layer compounded paper-based high-barrier material as well as a preparation method and application thereof, and belongs to the technical field of biodegradable high polymer materials and environment-friendly packaging. According to the scheme, a double-component system with a specific melting point difference is innovatively introduced to construct the water-based pre-coating layer, and efficient sealing and strong anchoring of a rough base material can be achieved under the extremely low coating weight by means of the double mechanisms of'microcosmic leveling and interface thermal fusion '. Compared with a traditional thick-layer lamination process, the material achieves more excellent barrier integrity and oil-resistant and moisture-resistant performance through a thinner extrusion surface layer, the moisture-resistant and oxygen-resistant performance is remarkably improved, and meanwhile the requirement for puncture resistance of dry and hard food packaging materials is thoroughly met through the unique double-layer system stress balance design. The material does not contain fluorine additives, is completely biodegradable, and meets the high-standard requirements of food safety and compliance.
Owner:DU BAI CHENG NEW MATERIAL TECH (SHANGHAI) CO LTD +4
Degradable express bag material and preparation method thereof
The invention discloses a degradable express bag material and a preparation method thereof, and relates to the technical field of high polymer materials. The invention discloses a degradable express bag material. The composite material is prepared from the following raw materials in parts by weight: 40 to 50 parts of poly (butylene adipate-co-terephthalate), 20 to 30 parts of polycaprolactone, 5 to 8 parts of modified bamboo fiber, 2 to 4 parts of modified nano montmorillonite, 3 to 6 parts of tributyl citrate, 0.1 to 0.3 part of antioxidant 1076, 1 to 2 parts of iron dithiocarbamate master batch, 2 to 3 parts of maleic anhydride grafted poly (butylene adipate-co-terephthalate) and 0.3 to 0.6 part of zinc stearate. 0.1 to 0.3 part of baicalein; and 1 to 3 parts of chitosan-sorbitol composite coating liquid. According to the degradable express bag material, poly (butylene adipate-co-terephthalate) and polycaprolactone are used as main degradable raw materials, modified bamboo fibers and modified nano-montmorillonite are matched to enhance the mechanical property, an antioxidant 1076, baicalein and the like are added to guarantee the stability and functionality, temperature is accurately controlled in the preparation process, multi-step modification is adopted for optimizing component combination, and the degradable express bag material is prepared. The performance is improved through the composite coating, degradability is achieved, and good usability is achieved.
Owner:GUANGDONG BAISHENG ENVIRONMENTAL PROTECTION MATERIALS CO LTD
Lifting chain type single bamboo chip separating device
The utility model belongs to the technical field of bamboo processing, and particularly relates to a lifting chain type single bamboo chip separating device which structurally comprises a vertical plate for installation and further comprises a chain arranged on the vertical plate for installation and used for conveying bamboo chips upwards and a transverse frame body unit arranged on the chain and used for supporting the bamboo chips. And the protruding plate unit is arranged on the vertical plate for mounting and is used for pushing and dropping an upper-layer bamboo chip of the two stacked bamboo chips and a single conveyed bent bamboo chip with two upwarped ends in a manner of blocking the end positions of the bamboo chips.
Owner:HARBIN FORESTRY MASCH RES INST STATE FORESTRY & GRASSLAND ADMINISTRATION
Bacteriostatic and antiviral bamboo pulp paper-based sanitary isolation bag as well as preparation method and application thereof
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.
Owner:DU BAI CHENG NEW MATERIAL TECH (SHANGHAI) CO LTD +3
Biodegradable multilayer film comprising outer layer and core layer for wall of disposable bag
The present disclosure relates to a biodegradable multilayer film comprising stacked on each other in the following order: a) a first outer layer comprising a first polymer selected from the group consisting of poly (butylene adipate-co-terephthalate) (PBAT), poly (butylene succinate) (PBS), poly (butylene succinate-co-adipate) (PBSA), and mixtures thereof; b) a core layer comprising a blend of thermoplastic starch (TPS) and polybutylene adipate terephthalate (PBAT); c) a second outer layer comprising a second polymer selected from the group consisting of poly (butylene adipate-co-terephthalate) (PBAT), poly (butylene succinate) (PBS), poly (butylene succinate-co-adipate) (PBSA), and mixtures thereof. The present disclosure also relates to a disposable bag, a bioreactor and a container suitable for mixing, packaging, storing or transporting biopharmaceutical substances, wherein the disposable bag, bioreactor and container comprise the biodegradable multilayer film.
Owner:SARTORIUS STEDIM FMT SAS +2
Closure and drainage for molded fiber packaging
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.
Owner:MISO ROBOTICS INC
Multi-layer packaging material with high barrier property and application thereof
The invention relates to a multilayer packaging material with high barrier property and application thereof. The multi-layer packaging material at least comprises three layers, namely a layer A, a layer B and a layer C, wherein the layer B is located between the layer A and the layer C; the layer A is prepared from the following raw materials: first biodegradable polyurethane and a cellulose nanocrystal graft which is obtained by performing grafting treatment on cellulose nanocrystal after hydrophobic modification, and the content of the cellulose nanocrystal graft is 1wt%-10wt% of that of the first biodegradable polyurethane; the raw material of the layer B comprises biodegradable polyester containing a glycollic acid structural unit, and the content of the glycollic acid structural unit is not less than 60% mol; the raw material of the layer C comprises second biodegradable polyurethane. The hydrophobic modified cellulose nanocrystals are uniformly dispersed in the layer A, so that the adsorption of water vapor on the layer A is reduced, the permeation of the water vapor is hindered, and the barrier property of the whole material is improved.
Owner:SHANGHAI ZILING CHEM TECH CO LTD
Automatic calcium powder weighing and bagging structure
The utility model discloses an automatic calcium powder weighing and bagging structure, and relates to the field of bagging structures. An automatic calcium powder weighing and bagging structure comprises a supporting frame and further comprises a discharging pipe communicated with the lower portion of the supporting frame, a supporting plate is fixedly connected to the discharging pipe, and a supporting rod is fixedly connected to the supporting plate; the supporting rod is rotationally connected with a second rotating rod, and the other end of the second rotating rod is slidably connected with a sliding rod. The second rotating rod is fixedly connected with a hook, and the sliding rod is fixedly connected with a clamping plate. The ton bag is used for receiving the calcium powder falling from the discharging pipe; the hook is used for connecting a sling of the ton bag; when the sliding rod slides to drive the clamping plate to clamp and seal the bag opening of the ton bag, the second rotating rod and the hook rotate, and the hanging belt of the ton bag is tensioned towards the inclined upper part of the outer side by the hook; the material receiving opening of the ton bag can be clamped and sealed, dust is prevented from escaping when calcium powder is added into the ton bag, and meanwhile a user can replace and place a stacking bag conveniently.
Owner:ZHEJIANG HAISEF NEW MATERIALS CO LTD
Antibacterial sanitary towel packaging bag and preparation method thereof
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.
Owner:FUJIAN MANSHANHONG NEW MATERIAL TECH CO LTD
Polymerizable raw material comprising recycled bis(2-hydroxyethyl) terephthalate and method for preparing the same
A polymerization raw material obtained by the depolymerization of waste polyester is disclosed. The polymerization raw material contains recycled bis(2-hydroxyethyl) terephthalate in which the contents of acetate-based ester compounds and diethylene glycol ester compounds are adjusted to specific levels. The polymerization raw material is excellent in purity and quality, and free from the problem that thermal resistance characteristics deteriorate in the polymerization of a polymer from the recycled monomer.
Owner:SK CHEMICALS CO LTD
Wear-resistant environment-friendly PET base material adhesive tape and preparation method thereof
The invention discloses a wear-resistant environment-friendly PET base material adhesive tape and a preparation method thereof, and belongs to the technical field of adhesive tapes, raw materials comprise a PET adhesive tape film and an EB curing modified adhesive, the surface of the modified PET adhesive tape film subjected to corona treatment is coated with the EB curing modified adhesive, then electron beam radiation curing is carried out, the absorbed dose of electron beams is 38-42 kGy, and the EB curing modified adhesive is prepared. And then cooling, rolling and curing to obtain the wear-resistant environment-friendly PET base material adhesive tape. The modified PET adhesive tape film is prepared from the following raw materials: PET resin and modified polyolefin elastomer master batch; the EB curing modified adhesive is prepared from the following raw materials: butyl acrylate, 2-ethylhexyl acrylate, tripropylene glycol diacrylate, acrylate resin, urethane acrylate and starch modified core-shell microsphere powder. According to the mode, a modification process is added in the preparation process of the PET adhesive tape film and the adhesive, and finally the environment-friendly PET base material adhesive tape with excellent comprehensive performance is prepared.
Owner:佛山市奥川顺新材料实业有限公司
High-barrier waterproof and oil-proof meal package paper and preparation method thereof
The invention discloses high-barrier waterproof and oil-proof meal package paper and a preparation method thereof, and relates to the technical field of food packaging materials. The invention discloses a preparation method of high-barrier waterproof and oil-proof meal package paper, which comprises the following steps: coating raw paper with waterproof and oil-proof glue to obtain the high-barrier waterproof and oil-proof meal package paper, the waterproof and oil-proof glue comprises the following raw materials in percentage by weight: 1-2% of modified chitosan, 4-5% of carboxymethyl cellulose, 0.3-0.5% of nano cellulose, 0.15-0.25% of modified nano mesoporous silica, 0.3-0.42% of a bio-based cross-linking agent and the balance of a solvent, and the sum of the weight percentages of the raw materials is 100%. The prepared meal package paper is good in waterproof and oil-proof effects, and the folding strength of the coating is high.
Owner:WELBON SPECIAL MATERIALS CO LTD
Bacteriostatic food packaging bag and preparation method thereof
The invention discloses a bacteriostatic food packaging bag and a preparation method thereof, and relates to the technical field of food packaging, the bacteriostatic food packaging bag comprises the following components by weight: 12-22 parts of bamboo fiber; 55 to 80 parts of TPS (Thermoplastic Polystyrene); 15-20 parts of a modified ethylene composite copolymer; 15 to 20 parts of modified chitosan; wherein the modified ethylene composite copolymer is obtained by polymerizing active group-containing ethylene and one of vinyl acetate, butene, hexene or octylene according to a molar ratio of 10: (3-6); the active group is at least one of amino and sulfonic acid group; the modified chitosan is sulfo-grafted chitosan, and the mass grafting rate is greater than 0.1 wt%. The preparation method has the advantages that the compatibility of a composition formula is improved through the modified ethylene composite copolymer and the modified chitosan, a uniform net structure is formed in a cross-linking reaction to serve as a supporting framework, the overall mechanical structure performance is enhanced through the bamboo fibers which are synergistically and uniformly distributed in the composition formula, and the degradable and non-toxic effects are achieved through the cooperation of the bamboo fibers and the TPS.
Owner:厦门富锦新材料有限公司
Closure and drainage for molded fiber packaging
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.
Owner:CONGRUENS GROUP LLC
Potato packaging device
Owner:ZHANGBEI COUNTY SHUOFENG AGRICULTURAL DEVELOPMENT CO LTD
Bag roll cassette and method of use
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.
Owner:ANGELCARE CANADA INC
Degradable polyester film bag slitting device with magnetic anti-counterfeiting mark
The invention relates to the related technical field of degradable polyester film bag body processing, and discloses a degradable polyester film bag slitting device with a magnetic anti-counterfeiting mark, which comprises a rack, an unwinding frame, a winding roller fixed on one side of the rack, a variable pitch structure arranged at the top end of the rack and a cleaning structure, the cleaning box is arranged in the rack, and the maintenance structure is arranged in the cleaning box. The jacking oil cylinder extends to drive the cleaning box to ascend, the slitting knife enters the cleaning box, cleaning liquid is injected into the cleaning box, meanwhile, the cleaning cotton piece wipes the surface of the slitting knife, and impurities such as membrane material chippings and oil stains are removed, so that the knife cleaning function of the device is achieved, the impurities on the surface of a blade can be efficiently removed, and the cutting efficiency is improved. Pollution to the film bag or scratch to the surface is avoided, product quality is guaranteed, potential safety hazards and downtime of manual cleaning are reduced, production continuity is improved, and cost is reduced to a certain extent.
Owner:GUANGZHOU QIYU PLASTIC PROD CO LTD
High-barrier degradable vegetable and fruit preservative film based on multilayer compounding and preparation method thereof
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.
Owner:KASHI COUNTY DENING AGRICULTURAL CO LTD
Polycarbonate modified composite material as well as preparation method and application thereof
The invention belongs to the technical field of polymer composite materials, and particularly relates to a polycarbonate modified composite material as well as a preparation method and application thereof, and the polycarbonate modified composite material comprises 60-85 parts of a PC base material, 10-30 parts of a bio-based monomer, 1-8 parts of surface modified nano cellulose and 0.1-2 parts of a transesterification catalyst. According to the polycarbonate modified composite material as well as the preparation method and the application thereof provided by the invention, chemical bonding of a bio-based monomer and a PC main chain is realized through transesterification, phase separation is avoided, and the core pain point of traditional blending modification is solved; the biodegradation rate is increased by 30% or above compared with pure PC, and meanwhile, the excellent mechanical properties (the tensile strength is larger than or equal to 60 MPa, and the notch impact strength is larger than or equal to 5 kJ / m) of PC are reserved; the melt flow rate is increased by more than 25%, the processing energy consumption is reduced, and the application scene is widened; the carboxylic acid modified nano cellulose and the block copolymer form a synergistic network, so that the mechanical property, the thermal stability and the degradation uniformity are synchronously improved.
Owner:DONGGUAN YUANZE NEW MATERIAL TECH CO LTD
Fresh-keeping packaging method and system for brasenia schreberi tender shoots
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%.
Owner:JIANGXI NORMAL UNIV
Paper bottle system for pharmaceuticals
A paper bottle system for pharmaceuticals is disclosed. The system includes a first frustum-shaped conical section formed of heavy-weight paper, a second frustum-shaped conical section formed of a biodegradable material, a biodegradable lid, and an aqueous coating. The conical sections are angled between 5-8 degrees from vertical, allowing for efficient nesting and stacking. The system is designed to be environmentally friendly, easily recyclable, and optimized for short-term use. When disposed of in a landfill, the paper bottle system quickly breaks down, contributing to soil health and reducing environmental impact.
Owner:WHEELER ROBERT T
Biodegradable flexible conductive high-hydrophobicity composite film as well as preparation method and application thereof
The invention discloses a biodegradable flexible conductive high-hydrophobicity sensor substrate and a preparation method and application thereof.The preparation method comprises the steps that a polylactic acid electrostatic spinning solution and a chitosan / polyethylene oxide mixed electrostatic spinning solution are prepared on the basis of a safe and non-toxic food-grade material; the preparation method comprises the following steps: sequentially spinning by adopting an electrostatic spinning technology to form a sandwich structure flexible substrate, transferring a carbon nano tube conductive film, and tightly attaching the carbon nano tube conductive film to the surface of a polylactic acid layer of the sandwich structure substrate, thereby finally obtaining the flexible conductive high-hydrophobicity composite substrate. According to the invention, a hydrophobic-hydrophilic-hydrophobic sandwich structure is constructed through multi-layer electrostatic spinning, and a surface carbon nanotube conductive layer is cooperated, so that the substrate has high hydrophobicity, excellent conductivity and flexible tensile property. The preparation method has the characteristics of controllable process, low cost and environmental friendliness, and the obtained substrate is expected to have wide application prospects in the fields of food packaging, sensor substrates, intelligent wearing, health monitoring and the like.
Owner:BOHAI UNIV
Rapid distribution device for industrial lubricating oil
The utility model discloses a rapid industrial lubricating oil distribution device, which belongs to the technical field of lubricating oil and comprises a bottom plate, a protection box fixedly connected to the left side of the top of the bottom plate, a second motor fixedly mounted at the bottom of an inner cavity of the protection box, a rotating rod fixedly connected to the output end of the second motor, and a rotating disc fixedly connected to the top of the rotating rod. An L-shaped frame is fixedly connected to one side of the top of the rotary disc, an electric sliding rail is fixedly connected to one side of the L-shaped frame, a sliding table is slidably connected to the inner wall of the electric sliding rail, and a distribution cylinder is fixedly connected to one end of the sliding table. The electric push rod drives the piston plate to move downwards, in the moving process of the piston plate, the intensity of pressure in the distribution cylinder can be increased, lubricating oil can be output from the bottom of the distribution cylinder under the action of the pressure and falls on the surface of a workpiece needing to be lubricated, meanwhile, the amount of the output lubricating oil is read in real time through scales, and the lubricating oil can be accurately output. The condition that the lubricating oil is output too much or too little is prevented, and the purpose of quantitative distribution is achieved.
Owner:QINGDAO HUARUI TIGER IND & TRADE CO LTD