209 results about "Plastic wrap" patented technology

The invention relates to the technical field of food fresh-keeping materials, and discloses a preparation method of an intelligent response degradable fruit and vegetable fresh-keeping film based on a Janus structure, the intelligent response degradable fruit and vegetable fresh-keeping film comprises a hydrophobic layer and a hydrophilic layer, the hydrophobic layer is an electrostatic spinning film formed by compounding eugenol-loaded ZIF-8 nano-particles and polylactic acid, and the hydrophilic layer is an electrostatic spinning film formed by compounding eugenol-loaded ZIF-8 nano-particles and polylactic acid. The hydrophilic layer is an electrostatic spinning membrane formed by compounding chitosan and gelatin, the surface of the hydrophobic layer is covered with the hydrophilic layer through an electrostatic spinning technology, the ZIF-8 nanoparticles are synthesized through a room-temperature stirring method, and synthesis raw materials are a 2-methylimidazole methanol solution and a zinc nitrate methanol solution. By means of the pH response characteristic of the ZIF-8 nano-particles, pH value change signals generated in the early stage of fruit and vegetable putrefaction can be sensitively captured, loaded antibacterial components are accurately released through ZIF-8 framework dissociation, targeted inhibition on putrefying bacteria is achieved, passive protection is converted into active intervention, the fruit and vegetable putrefaction process is effectively delayed, the fresh-keeping effect is improved, and the fresh-keeping time is prolonged.

The invention belongs to the technical field of degradable packaging materials, and discloses a preparation method of a degradable preservative film. The anti-fog antibacterial plastic is prepared from the following raw materials in parts by weight: 40 to 45 parts of poly (butylene adipate-co-terephthalate) (PBAT), 8 to 12 parts of polylactic acid (PLA), 28 to 32 parts of modified structural starch, 4 to 6 parts of poly (butylene carbonate) (PBC), 4 to 6 parts of talcum powder, 0.4 to 0.6 part of aluminate, 0.8 to 1.2 parts of a composite antibacterial agent and 2.5 to 3.5 parts of anti-fog master batch. The invention aims to overcome the defects in the prior art, and provides the degradable preservative film and the preparation method thereof, the preservative film not only has good degradability and mechanical properties, but also has excellent antibacterial and antifogging effects, and the preparation process is simple and easy for industrial production.

The invention relates to polylactic acid carbon dots as well as a PLA / PVA (polylactic acid / polyvinyl alcohol)-based full-biodegradable polyester composite material and a preservative film thereof. The polylactic acid carbon dots are prepared by a microwave irradiation method, and the full-biodegradable polyester composite material takes PLA as a main base material, PVA as auxiliary resin, food-grade talcum powder as a filler, the polylactic acid carbon dots as a compatilizer, glycerol and stearic acid as lubricants and B215 as an antioxidant. Performing high-speed mixing and stirring to obtain a modified mixture, extruding and pelletizing the modified mixture to obtain a full-biodegradable polyester composite material, and performing film blowing on the polyester composite material to obtain the full-biodegradable preservative film. The polyester composite material prepared by the invention can be biodegraded under a matured compost condition (the test period is 140 days), the biodegradation rate is 91.79%, the relative biodegradation rate is 97.15%, the products are carbon dioxide and water, and inspection items such as the total migration amount and heavy metals meet standard requirements.

The utility model discloses a plum preservation and storage device, and relates to the technical field of plum preservation. Comprising a side supporting frame, a transverse frame is fixedly arranged on the side supporting frame, a frame is fixedly arranged on the transverse frame, a hanging rod is arranged on the frame in a sliding mode, a mounting plate is fixedly arranged on the side supporting frame, a preservative film roll is fixedly arranged on the mounting plate, an inner supporting plate is fixedly arranged on the hanging rod, and a bearing frame is arranged on the inner supporting plate in a sliding mode. And a stop lever is arranged on the bearing frame. Through cooperative operation of the hanging rod, the preservative film roll, the bearing frame and other components, precise film covering of the plum frames is achieved. During storage, each frame of plums can be quickly and accurately wrapped with a preservative film, direct contact between outside air and dust and fruits is effectively blocked, the respiration and moisture evaporation rate of the plums are greatly reduced, the preservation time is remarkably prolonged, the wizened and rotting risks of the fruits are reduced, and it is ensured that the plums stored for a long time are still fresh and juicy; and good taste and appearance quality are maintained.

1. Name of this design product: Telescopic food storage box holder. 2. Purpose of this design: A bracket for holding food wrap boxes. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the key design points: Design 3 3D diagram. 5. Design 3 is designated as the basic design.

The utility model relates to the technical field of preservative film preparation, and discloses a degradable preservative film preparation device which solves the problems in the background technology and comprises a feeding port, an extrusion plasticizing mechanism is arranged at the bottom of the feeding port, and a forming module is arranged at the end, away from the feeding port, of the extrusion plasticizing mechanism. The forming module comprises a first mold plate, the first mold plate is connected with the tail end of the extrusion plasticizing mechanism, the first mold plate is sleeved with a second mold plate, the two ends of the second mold plate are in threaded connection with lead screws, the two lead screws are connected with the output end of a rotating motor, and a through hole is formed in the first mold plate; the mold has the advantages that the mold does not need to be frequently replaced, the production and storage cost of the mold is reduced, the mold can be immediately completed according to the market requirement or the change of the product specification, and the production flexibility is greatly improved.

The invention relates to an automatic preservative film wrapping device which comprises a frame, a plurality of corner connectors, a drawing mechanism, a lifting mechanism and a wrapping mechanism. The multiple corner connectors are fixedly arranged at the connecting positions of the frames. The drawing mechanism is arranged on the frame; the lifting mechanism is arranged on the frame; the coating mechanism is arranged on the frame; the lifting mechanism comprises a first driving assembly, a first placing plate, a second placing plate, a limiting block and a plurality of fixing assemblies; the first driving assembly is arranged on the frame; the first placing plate is arranged on the first driving assembly; the second placing plate is rotatably arranged on the first placing plate; the limiting block is fixedly arranged on the frame and arranged on the first driving assembly in a sleeving mode. And the plurality of fixing assemblies are arranged on the second placing plate.

1. Name of the designed product: packing box (preservative film). 2. Use of the designed product: packing box for placing preservative film. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention discloses a preparation method of a waxberry composite preservative film, which comprises the following steps: adding waxberry anthocyanin, waxberry carbon dots and a plasticizer into a gelatin-K-carrageenan solution, uniformly stirring and mixing, ultrasonically degassing, forming a film by using a mixed solution, and drying at room temperature to obtain the waxberry composite preservative film, the preservative film has good water vapor and oxygen barrier property and excellent mechanical property; in addition, the film shows freshness indicating ability through pH responsiveness; meanwhile, the adopted preparation method is easy to operate and free of special equipment requirements, high-value utilization of waxberry waste is achieved, and the prepared composite preservative film has a huge application market prospect in the field of fresh-keeping packaging of meat which is prone to oxidation and microorganism breeding.

The invention discloses a plastic wrapping film production raw material stirrer, and relates to the technical field of plastic wrapping film production. The main shaft is vertically mounted in the middle of the stirring barrel body through a bearing, and spiral blades are arranged on the periphery of the main shaft; the driving module is mounted at the upper end of the stirring barrel, and the output end of the driving module is in transmission connection with the upper end of the spindle for driving the spindle to rotate; the cooling pipe is embedded in the main shaft and is used for introducing a cooling medium to take away heat generated in the stirring process; the cooling box body is fixedly mounted at the upper end of the stirring barrel body; the feeding tank body is mounted on the side part of the lower end of the stirring barrel body and is communicated with the bottom of the stirring barrel body through a through hole. According to the plastic wrapping film production raw material stirrer, precise temperature control is achieved through the built-in rotary cooling pipe and a closed circulation system, and thermal degradation of raw materials is inhibited; and the shaft body is linked with the piston piece and the material limiting plate, so that cooling pressurization and quantitative discharging are synchronously completed with single power, and the stirring uniformity, the automation level and the operation stability are improved.

The present application relates to the technical field of vegetable packaging, and particularly relates to a vegetable packaging machine, which comprises a packaging table, a winding unit for driving a preservative film to wind around vegetables is arranged on the packaging table, an avoiding hole matched with the winding unit is arranged on the packaging table, a supporting roller for supporting the bottom of the preservative film is arranged below the packaging table, two pressing rollers for supporting the top of the preservative film are arranged below the packaging table, and an adjusting structure for adjusting the positions of the supporting roller and the pressing rollers is arranged on the packaging table; the adjusting structure drives the pressing roller and the supporting roller to move to the winding track in sequence, and accurately positions the preservative film upwards and downwards, thereby creating a stable and accurate operation window for subsequent clamping and cutting, and solving the industry problem that the clamping mechanism is difficult to accurately grasp the preservative film due to the thin and soft preservative film and easy drift.

The invention discloses a sea grass preservative film and a preparation method thereof, and relates to the technical field of preservative film preparation. Aiming at the problems of serious pollution and difficult degradation of the existing plastic product, the invention takes sea grass and starch as core raw materials and is prepared by the steps of sea grass raw material pretreatment, extract preparation, gel mixture preparation, calcium ion crosslinking, airing and the like. The seaweed extract and the starch are subjected to synergistic interaction through hydrogen bond physical crosslinking and thermal gelation to form a stable film structure, the raw materials are food-grade, and the seaweed film has toughness and complete degradability, is free of harm to the environment and human bodies, can be widely applied to food packaging, field film covering, packaging products and other scenes, effectively replaces traditional plastic products, and solves the problem of plastic pollution.

The present application relates to the field of food processing technology, and more particularly to a modified frozen dough with oxidized konjac polysaccharide and a preparation method thereof. The frozen dough comprises the following raw materials in parts by weight: 850-950 parts of flour, 500-600 parts of water, 2.55-9.5 parts of oxidized konjac polysaccharide, 8.5-14.25 parts of calcium gluconate, 0.25-1 part of zinc gluconate, and 8-60 parts of a leavening agent. The leavening agent is yeast or baking powder. In the preparation, the oxidized konjac polysaccharide, calcium gluconate and zinc gluconate are uniformly dispersed in water, and then subjected to high-pressure homogenization and plasma treatment. All the raw materials are put into a dough mixer, mixed at low speed for 1-3 min, and then mixed at high speed for 3-5 min. After mixing, the dough is divided into small doughs, and rolled into small balls. The doughs are wrapped with plastic wrap and quickly frozen. The frozen dough has improved stability, and the deterioration of the specific volume of the food made from the frozen dough is improved.

This invention discloses a method for preparing large-scale, original-color seaweed specimens, belonging to the field of seaweed preparation methods. The method includes the following steps: S1: Collecting algal bodies with reproductive organs and basal holdfasts; S2: Washing the algal bodies from S1 with pretreated water, selecting algal bodies with intact reproductive organs and basal holdfasts, and drying them; S3: Completely wrapping the algal bodies from S2 with plastic wrap and irradiating them with ultraviolet light; S4: Preparing a preservation solution; S5: Immersing the algal bodies from S3 in the preservation solution; removing them after 5 minutes; S6: Preparing the original-color specimen: removing the algal bodies from S5, placing them in a paper bag, and air-drying them in a dry, ventilated location. The dried specimen is then the original-color specimen. This method can produce original-color seaweed specimens.

1. The name of the design product: packaging sheet (food preservation film cover). 2. The use of the design product: mainly used for food preservation, which can effectively prevent dust and odor diffusion. 3. The design points of the design product: the combination of patterns and colors. 4. The picture or photo that best indicates the design points: front view. 5. The design for which protection is sought includes color. 6. The design product is a thin product, and the perspective view, top view, bottom view, left view, right view, and rear view are omitted.

The application relates to the technical field of preservative film production, and discloses a waste on-line crushing and melting granulation integrated device for preservative film production, which comprises a base, a main integrated material bin is fixedly installed at the top of the base, a collecting box is fixedly installed above the main integrated material bin, a feeding bag is arranged on one side of the collecting box, a hopper is arranged on the inner side of the main integrated material bin, a guide block is slidably connected above the hopper, a rotating strip is rotatably arranged on one side of the guide block, and a plug rod is rotatably connected in the rotating strip. The closed integrated system is used to save the intermediate transportation and storage link, the quality of the regenerated material is guaranteed from the source, the mechanical compaction, the spray humidification and the pulse purging are combined to ensure the continuous and stable feeding, the core rod, the limiting rod and the exhaust filtering design are finally matched, the regenerated material with uniform particles and high purity is output, the preservative film waste fragments are further promoted to fall down, the bridging obstruction is reduced, and the production quality of the whole preservative film is improved.

This utility model provides a protective sleeve for plant grafting cuts, relating to the field of plant grafting technology. It includes a first outer shell and a plant diameter. A second outer shell is positioned at the top center of the first outer shell, a third outer shell is positioned at the top center of the second outer shell, and a storage sleeve is positioned at the top center of the third outer shell. A diaphragm is provided on the inner surface of the storage sleeve. In this utility model, by designing the internal spaces of the first, second, and third outer shells for protecting the plant diameter in a layered manner, with their internal diameters decreasing sequentially from bottom to top, the sleeve can be fitted according to the plant diameter, avoiding conventionally used fixed sizes and making it more convenient. Furthermore, when the sleeve is applied to the plant cut, squeezing the storage sleeve causes the medicine stored inside to fall onto the plant cut, promoting healing and improving the plant's survival rate. Protecting the plant cut eliminates the need for cutting and wrapping with plastic wrap, saving time and effort and greatly improving work efficiency.

This invention belongs to the field of meat preservation films in food packaging materials, specifically relating to a preservation film material. The invention employs a chemical precipitation method to deposit the metallic antibacterial agent silver oxide onto plant fibers, and adds tannic acid, a polyphenolic compound with excellent antioxidant properties, mixed with a polymer matrix and solvent to prepare a spinning precursor solution. Then, an antibacterial and antioxidant film is prepared by electrospinning. When applied to meat preservation, it can extend the shelf life of chilled meat by more than 6 days. This invention utilizes the reduction of silver ions released from silver oxide to nano-silver under the action of tannic acid, achieving a synergistic effect of antibacterial and antioxidant properties with tannic acid. It also possesses good mechanical properties and hydrophobicity, showing broad application prospects in the meat and fruit / vegetable preservation industries.

The utility model relates to the technical field of plastic meal boxes, in particular to a plastic meal box with a preservative film, which comprises a box cover, an inner box and a box body, the inner box can be mounted on the box body, the inner box extends inwards to form a first mounting groove, adjusting grooves are arranged on two sides of the first mounting groove of the inner box, and the preservative film is arranged in the adjusting grooves. Two baffles capable of being adjusted at will are installed on the adjusting groove in a buckled mode, a first supporting block and a second supporting block are fixedly installed at the two ends of the upper surface of the box cover respectively, and a rolling shaft used for installing a preservative film is movably installed between the first supporting block and the second supporting block. A hook is fixedly installed at the end, away from the rolling shaft, of the box body, waterproof glue layers are arranged on the box body and the baffle, and clamping grooves matched with the waterproof glue layers are formed in the box cover. The first mounting groove extending inwards is formed in the box body and can be used for containing some small tableware or storing food in a classified mode, and the space utilization rate of the meal box is effectively increased.

The invention belongs to the field of food fresh-keeping packaging, and discloses a microporous litchi fresh-keeping film and a preparation method thereof, the microporous litchi fresh-keeping film is formed by compounding an inner layer, a middle layer and an outer layer; the inner layer is a blend of 60-70 parts of polylactic acid, 25-35 parts of chitosan and 3-5 parts of a rosemary extract, and the rosemary extract is powder obtained after ethanol reflux extraction and freeze drying; the middle layer is a blend of 4-6 parts of nano titanium dioxide, 2-4 parts of microencapsulated sodium bicarbonate, 5-8 parts of montmorillonite and 100 parts of poly (butylene succinate), the core material is sodium bicarbonate, and the mass ratio of the core material to the capsule material is 3: 1; the outer layer is a blend of 100 parts of polybutylene adipate-terephthalate and 5-8 parts of beewax, and the thickness ratio of the inner layer to the middle layer to the outer layer is 3: 2: 3; the invention aims to provide the microporous litchi preservative film and the preparation method thereof so as to solve the problems that the litchi preservative film in the prior art is poor in hydrophobicity, insufficient in gas regulation capability, incapable of effectively inhibiting peel discoloration and the like.

The utility model discloses a preservative film wrapping machine capable of removing bubbles, and relates to the field of wrapping machines, the preservative film wrapping machine comprises a mounting rack, the inner wall of the mounting rack is fixedly connected with a positioning rod, the outer wall of the positioning rod is fixedly connected with an air extracting pump, one side of the air extracting pump is provided with an air pipe, one end of the air pipe is provided with an air extracting head, and the other end of the air pipe is provided with an air outlet. And a fixing frame is mounted on the outer wall of the air exhaust head. The fixing frame is arranged to clamp and fix the air exhaust head, when the device is used, the arrangement of the fixing frame and the air exhaust head facilitates air exhaust of the inner space wrapped by the preservative film, air bubbles can be conveniently removed, the usability of the device is improved, the connecting frame is arranged to move the limiting frame, and when the device is used, the air exhaust head is clamped and fixed through the connecting frame. And by arranging a connecting frame and a limiting frame, the preservative film can be conveniently extruded and fixed, the preservative film is prevented from moving, meanwhile, a sealed cavity is formed by the limited preservative film, air exhaust and bubble removal are facilitated, and the usability of the device is improved.

The present application relates to the conveying technical field, especially to a kind of cold fresh beef low-temperature refrigeration storage device, including refrigeration compartment, fixed seat is installed in refrigeration compartment, fixed seat top is provided with conveying frame, one end of conveying frame is fixedly connected with fixed frame, fixed frame is installed with guide seat, press frame is arranged below guide seat, fixed frame lower side is fixedly connected with fixed frame, beef film covering mechanism is rotatably connected with fixed frame below, pusher mechanism is arranged on beef film covering mechanism, film feeding mechanism is arranged below both ends of fixed frame;Fresh-keeping film can be wrapped on beef by beef film covering mechanism, which can effectively enhance the preservation effect of cold fresh beef, reduce deterioration, maintain the freshness and nutritional components of meat quality, improve the efficiency of storage, transportation and sales, not only can prolong the shelf life, reduce water loss and cross contamination, but also can optimize the whole cold chain management process, thereby enhancing the market value of cold fresh beef.

The utility model relates to the technical field of waste treatment equipment, in particular to a waste treatment device for tire isolation preservative film processing, which comprises a base and a treatment box arranged at the top of the base, a feeding groove is arranged on one side of the treatment box, and a conveying belt is arranged below the inside of the feeding groove. A cutting table fixedly connected with the inner wall of the treatment box is arranged at the terminal end of the conveying belt, and a liftable vertical cutting knife is arranged above the cutting table; a flow guide plate fixedly connected with the top of the interior of the treatment box is arranged on the side, away from the conveying belt, of the cutting table, and a transverse crushing roller and a longitudinal crushing roller frame are sequentially and horizontally arranged below the position between the cutting table and the flow guide plate from top to bottom; a discharge pipe is arranged at the bottom of the treatment box; the lower portion of the discharging pipe communicates with a compression box with one end being open. And through the multi-stage crushing and compression design, efficient treatment of tire isolation preservative film waste is achieved, the size of the waste is reduced, and the treatment efficiency and the environmental protection performance are improved.

1. Name of the product in this design: Cling film cutting box (9288). 2. Purpose of this design: As a food wrap cutting box. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to the field of pipelines, in particular to a prestressed concrete cylinder pipe and a connecting structure thereof, the prestressed concrete cylinder pipe comprises a pipe body, and a prestressed steel wire in the pipe body is configured to be coated with plastic in a straightened and prestressed state; the pipe body comprises a plastic protection layer, the material of the plastic protection layer is the same as that of the plastic wrapping the prestressed steel wire, and the plastic protection layer wraps the prestressed steel wire. The steel wire is subjected to plastic coating under the state of obtaining prestress after being straightened, namely, the steel wire is subjected to plastic coating anti-corrosion after being fully deformed, so that the steel wire is not easy to corrode; the prestressed steel wire serves as a pipe body prestress source and also serves as a rib for forming the plastic protection layer, the plastic protection layer and concrete or the steel cylinder are tightly connected into a whole, good pipe body protection is provided, steel wire corrosion prestress failure and even steel wire breakage are prevented, the occurrence probability of pipe explosion accidents is reduced, and the service life is prolonged. The prestressed steel cylinder concrete pipe is simple in structure, convenient to use and good in effect.