412 results about "Plastic wrap" patented technology

The invention discloses basalt fiber reinforced anti-crack road concrete and a preparation method thereof, and belongs to the technical field of concrete preparation, and the preparation method specifically comprises the following steps: transferring a concrete precursor into a mold, transferring the mold to a vibration table, vibrating for 1-2 minutes, scraping the raised part of the surface by using a scraper, covering the surface of the material with a preservative film, and drying to obtain the basalt fiber reinforced anti-crack road concrete. Performing post-treatment to obtain the anti-crack concrete. The preparation method comprises the following steps: cleaning basalt fibers, activating, carrying out surface modification, curing to obtain composite basalt fibers, hydrolyzing a borosilicate monomer to prepare modified borosilane with a double-bond structure, converting the double-bond structure into an epoxy group through an epoxidation reaction to obtain a modified curing agent, and preparing the composite basalt fibers by using the modified curing agent and the modified borosilane as additives. And mixing with cement and other materials to obtain the wear-resistant, fracture-resistant and corrosion-resistant anti-crack concrete.

The invention relates to the technical field of concrete structure maintenance, and discloses an adjustable pier column intelligent water-saving spraying maintenance method and a maintenance device.The method comprises the following steps that a cover body of a pier column is arranged on the periphery of the pier column, and pier column surface humidity data are collected through sensing devices arranged on the periphery and the surface of the pier column; whether the spraying triggering condition is met or not is judged in combination with a preset control strategy, the control strategy is adjusted based on one or more of the environment temperature, the wind speed, the time and the historical spraying data, the spraying system is controlled to execute spraying operation when the spraying triggering condition is met, and the spraying operation is used for a spraying head opening area. Recycled water generated by spraying is collected through the seepage and drainage pipe. The closed or semi-closed spraying space is formed by arranging the cover body module, and the fresh-keeping film or tarpaulin wrapping structure is combined, so that local humidity stable control and evaporation suppression of the spraying environment are realized, and the effects of remarkably improving the spraying maintenance efficiency and reducing the water loss are achieved.

The invention relates to a double-layer preservative film for prolonging the shelf life of frozen beef and mutton after unfreezing and a preparation method of the double-layer preservative film. According to the preparation method of the angelica dahurica extract-gliadin nano-particles, the angelica dahurica extract-gliadin nano-particles can be used for preparing a double-layer preservative film, and the preservative film is a natural component and is environmentally friendly and safe. The preservative film is of a double-layer structure, the mechanical performance is enhanced through the double-layer film structure, and meanwhile the preservative film has excellent oxygen and water vapor barrier performance and an antibacterial effect. According to the preservative film disclosed by the invention, slow release of active ingredients is realized by utilizing the Pycnogenin-gliadin nanoparticles, so that the antioxidant and antibacterial effects are remarkably improved, and the quality guarantee period of meat is prolonged. In addition, the preservative film does not need to be in direct contact with food in practical application, potential safety hazards of the food are further reduced, the operation process is simplified, pollution is avoided, a user can conveniently use the preservative film, the preservative film has the advantages of efficient preservation and environmental protection, and the preservative film has good application prospects and value.

The invention relates to the technical field of food packaging, and discloses a composite preservative film as well as a preparation method and application thereof. The composite preservative film comprises a pectin film layer and a chitosan film layer which are arranged up and down, the pectin film layer contains an additive, the chitosan film layer contains lignin, and the additive is anthocyanin and / or an anthocyanin silver ion compound. The method comprises the following steps that S1, under the condition that a solvent exists, pectin and an additive are mixed I, then a pectin film layer is prepared through a tape casting method, and the additive is anthocyanin and / or an anthocyanin silver ion compound; in the presence of a solvent, chitosan and lignin are mixed II, and a chitosan film layer is prepared through a tape casting method; and S2, compounding the pectin film layer and the chitosan film layer to prepare the composite preservative film. The composite preservative film has antibacterial activity on various food spoilage bacteria and is high in oxidation resistance.

The utility model provides a mechanism for wrapping and packaging a spherical object by using a preservative film, which comprises a rack, a preservative film conveying and cutting mechanism, a mechanical aperture mechanism, a clamping jaw mechanism, a torsion mechanism, a turnover mechanism and a preservative film exhaust mechanism which are arranged on the rack, and a controller for controlling the mechanisms to work, and the photoelectric detection switch is used for sensing the operation action. A preservative film is laid and cut through the preservative film conveying and cutting mechanism, then spherical fruits and vegetables are used for pressing the preservative film into the middle of the mechanical aperture mechanism, and the preservative film is placed on the clamping jaw mechanism. After the photoelectric detection switch detects the putting-in action, the controller controls the clamping jaw mechanism to be closed to grab the spherical fruits and vegetables, then the mechanical aperture mechanism is closed, the preservative film is closed, and the spherical fruits and vegetables are wrapped; the torsion mechanism rotates the clamping jaw mechanism, so that the upper end of the preservative film is rotated and knotted, and meanwhile, the preservative film exhaust mechanism works synchronously and assists in exhausting, so that the effect of laminating and packaging the preservative film is achieved.

The invention discloses reinforced zipper production equipment and a production process, and belongs to the technical field of zippers. The problems of size errors and material damage caused by a zipper tooth folding process in existing reinforced zipper production are solved. The equipment comprises an injection molding machine, a belt unwinding wheel, a belt winding wheel, a connecting wire and a mold, a connecting wire hole and a cavity are formed in the mold, the mold is divided into an upper mold and a lower mold, and the lower mold is provided with a loose core, an ejector pin, a positioning groove and a positioning partition plate; the injection molding machine adopts a micro-tension control technology to control the tension of the connecting line, and molten plastic is injected into a cavity, so that the connecting line is wrapped by the plastic to form zipper teeth once without folding. During production, continuous production is carried out through the steps of belt placing, mold closing injection molding, cooling demolding, conveying positioning, circulating mold closing and the like, and the consistency of zipper tooth pitches is guaranteed through the positioning grooves and the positioning partition plates. A folding process is replaced by one-time injection molding, so that size errors and material damage are avoided fundamentally, and the product quality and the production stability are improved.

A wrap container having a body including a front wall, a rear wall, a top wall, and a bottom wall forming an enclosure. A roll of wrap is disposed within the enclosure. The top wall has a perforated section. A folding surface has a top surface and a bottom surface with a cutter assembly including a track and a slidable cutter attached to the bottom surface of the folding surface. The cutter assembly has a first retracted position in the enclosure and a second deployed positon folded out of the opening.

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 the technical field of polymer composite materials, in particular to a degradable PPC-based composite film as well as a preparation method and application thereof. The degradable PPC-based composite film is prepared from polypropylene carbonate, bamboo powder and vinyl trimethoxy silane. Polypropylene carbonate (PPC) is adopted as a base material, bamboo powder is combined for filling, the prepared composite film can be completely degraded after being buried in natural soil for 5 months, and degradation products of the composite film do not pollute the environment; the bamboo powder is adopted as a reinforcing filler, has a certain bacteriostatic effect, and can be used for delaying the growth of microorganisms on the surface of food and improving the food safety and the fresh-keeping effect if being applied to the food fresh-keeping film. Compared with a pure PPC film, the composite film disclosed by the invention is improved in the aspects of mechanical property, thermal stability and glass transition temperature, and shows more excellent comprehensive performance.

The invention discloses a chitosan-based preservative film with a pH colorimetric function as well as a preparation method and application of the chitosan-based preservative film. The chitosan-based preservative film is prepared from the following preparation raw materials: chitosan, cellulose nanofibers, a deep eutectic solvent and a beet red-zinc ion complex. Wherein the chitosan enables the film to have antibacterial property; the cellulose nanofiber can enhance the tensile strength and toughness and reduce the water vapor / oxygen permeation coefficient; the beet red-zinc ion complex has the characteristic of more stable color development, and the color difference response delta E to pH 2-12 is greater than or equal to 8. The chitosan-based preservative film disclosed by the invention can be applied to food fresh-keeping packaging and food freshness monitoring; the preservative film disclosed by the invention can be used for effectively prolonging the service life of fruits and vegetables while ensuring the food safety; in food freshness monitoring application, the preservative film changes from low-pH-value orange to high-pH-value yellow according to the change of acid-base conditions, and the preservative film can be used as a pH colorimetric sensing film for freshness monitoring.

The utility model relates to the technical field of blister boxes, and discloses a portable blister box which comprises a lower box body, an upper box cover and a lifting rope. A bending connecting plate is fixedly connected between the lower box body and the upper box cover, a connecting clamping groove is fixedly connected to the lower box body, a connecting buckle is fixedly connected to the upper box cover, and the connecting clamping groove and the connecting buckle are in interference fit with each other; edge lugs are fixedly connected to the two sides of the lower box body, fixing cylinders are fixedly connected into the edge lugs, hanging grooves are formed in the outer sides of the fixing cylinders, elastic buckle plates are installed in the hanging grooves, and the lifting ropes are arranged in the fixing cylinders. According to the plastic uptake box, a set of hanging grooves are additionally formed in the two sides of the plastic uptake box in the mode that the side lugs are installed on the two sides of the plastic uptake box, at the moment, a worker can twist the preservative film into the carrying rope, the carrying rope is knotted at the two ends of the carrying rope, and therefore the plastic uptake box is convenient to use. The carrying rope and the hanging groove are mutually assembled, so that the handle is additionally arranged on the blister box, and the blister box is convenient to carry by people.

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 discloses an algin composite membrane which is prepared by the following steps: adding 0.8-1.2 g of algin, 0.8-1.2 g of hydroxypropyl methyl cellulose, 0.8-1.2 mL of glycerol, 0.4-0.6 g of titanium dioxide and 0.8-1.2 g of polylysine into water, uniformly mixing, fixing the volume, putting into a container, drying, immersing into a CaCl2 solution for crosslinking treatment, and drying, thereby obtaining the algin composite membrane. The algin composite film can be used as or used for preparing a food preservative film. The algin composite film disclosed by the invention realizes good balance between strength and ductility, has good antioxidant capacity and remarkable antibacterial effect, and can effectively enhance the antioxidant defense capacity of the cape gooseberries, reduce oxidative damage, prolong the storage period and improve the fresh-keeping effect of the cape gooseberries. According to the method, the economic value of the sargassum is favorably improved, and powerful support is provided for sustainable development of the food industry.

The invention discloses a production process of an anti-fog, mildew-proof and antibacterial plastic preservative film, and relates to the technical field of high polymer material processing. The preparation method comprises the following steps: S1, preparing matrix resin; s2, compounding functional raw materials; s3.1, preparing an anti-fog melt; s3.2, preparing a raw material gradient distribution blending melt; s4, performing multi-layer co-extrusion film blowing molding; and S5, plasma surface modification. According to the production process of the anti-fogging, mildew-proof and antibacterial plastic preservative film, the technical contradiction that the anti-fogging performance and the antibacterial performance of a traditional preservative film are difficult to coexist is solved; no solvent is added in the whole process, and the highest safety standard of food contact materials is met; according to the five-layer co-extrusion film blowing unit disclosed by the invention, the air ring and the mold core can be conveniently and quickly mounted and dismounted, the maintenance operation is convenient, and the production efficiency and the product quality are favorably improved.

The invention belongs to the field of food fresh-keeping materials, and particularly relates to a deep-eutectic propolis extract and CS / DPE composite film, a preparation method thereof and application of the deep-eutectic propolis extract and CS / DPE composite film in fresh-keeping films. The preparation method of the deep-eutectic propolis extract comprises the following steps: propolis is subjected to extraction treatment by adopting a deep-eutectic mixed solution containing a deep-eutectic solvent and water, the deep-eutectic solvent is a mixture of betaine and levulinic acid, and the extraction condition is that the polyphenol content in the obtained extracting solution is 25 mg / g or above and the flavone content is 250 mg / g or above; the obtained extracting solution is the eutectic propolis extract. The preparation method of the food preservative film comprises the following steps: mixing a chitosan solution and the eutectic propolis extract, casting to form a film, standing, and drying to obtain the food preservative film. The eutectic propolis extract obtained by the method provided by the invention is rich in polyphenols and flavones, and the mechanical property of the chitosan-based preservative film can be improved and the preservation effect on foods can be prolonged when the eutectic propolis extract is added into the chitosan-based preservative film.

The invention discloses frozen dough added with stachyose and a preparation method of the frozen dough, and belongs to the technical field of food processing. The instant noodles are prepared from the following raw materials in parts by weight: 80-100 parts of medium gluten wheat flour, 0.8-1.2 parts of dried yeast, 40-60 parts of water and 0.5-2.0 parts of stachyose. The preparation method comprises the following steps: adding water into the dried yeast for activation, and mixing and stirring the activated dried yeast with the medium-gluten wheat flour; dissolving stachyose in water to obtain a solution, adding the solution into the mixture, and stirring until the dough is formed; standing and fermenting the dough, partitioning, kneading and shaping, packaging with a preservative film, and freezing and storing, so as to obtain the frozen dough added with stachyose. The stachyose is added into the dough, so that the quality deterioration of the dough caused by freezing treatment can be effectively improved. In addition, the stachyose is added, so that the blood sugar rising rate after flour products such as steamed buns are eaten can be reduced, and the pursuit of people for health is met.

The utility model relates to the technical field of labels, in particular to a label capable of avoiding color fading due to reaction with a plasticizer, a surface layer is separated from an object to be pasted by a zigzag support strip and a rectangular support strip, the distance between the surface layer and the object to be pasted is increased, and the possibility that information of the label reacts with the precipitated plasticizer is prevented. The content of the label is protected from fading due to erosion of the plasticizer; if the preservative film wraps the object with the label, the surface layer of the label is in direct contact with the preservative film, the third protection layer plays a first isolation role on the plasticizer in the preservative film, part of the free plasticizer penetrates through the third protection layer and then enters the second protection layer, and the second protection layer is made of paraffin oil. The thick paraffin oil absorbs and isolates most of the plasticizer, the free plasticizer is further reduced, a very small part of the plasticizer penetrates through the paraffin oil and then reaches the first protection layer to be blocked again, the plasticizer penetrating through the first protection layer is very small, the corrosion effect on the label is very small, and the label cannot fade due to the effect of the plasticizer.

The invention discloses a fragrant-flowered garlic fast harvesting-full-automatic fragrant-flowered garlic harvesting and binding machine, and relates to the technical field of agricultural harvesters. The device comprises a walking device, a mounting frame is mounted on the walking device, a cutting device, a grain lifting device, a clamping conveyor belt device, a binding and packaging device and a parallel conveyor belt device are mounted on the mounting frame, and the cutting device is matched with the grain lifting device. According to the device, automatic downward pressing action can be achieved, the binding and packaging efficiency and accuracy are improved, then the design that a half-shaped gear is meshed with a transmission gear is utilized, locking and fixing are conducted through a bolt, a downward pressing mechanism can accurately drive the gear to rotate, a preservative film is pulled out for supplement while downward pressing motion is conducted, the operation steps are simplified, and the working efficiency is improved. Through the design of interference fit and clearance fit, the relative movement between the gear shaft and the sleeve and the relative movement between the sleeve and the preservative film are more accurate, friction and clamping stagnation generated when the preservative film is pulled out are reduced, and the reliability and stability of equipment are improved.

A paint workstation includes several integral structures characteristics that provide convenient resources for painting projects, with such structures supported by adjustable legs and configured to hold several necessary tools. A main body of the workstation has compartments specifically configured to contain paint cans, paint brushes, tape, plastic wrap, etc. Further an integral paint roller tray is formed as part of the main body, and a removable paint roller holder is configured to be attached to the main body at a position adjacent the roller tray. The roller holder is configured to hold a paint roller in a position that is partially within the paint roller tray, but not to sit in a bottom reservoir portion of the tray. Additional accessories include attachable trays and components that allow the workstation to be configured in a manner that is very flexible and tailored to the painter's needs.

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 invention discloses an in-situ pulp incubation method for click chemical imaging analysis of postharvest lignification of fruits. The in-situ pulp incubation method comprises the following steps: (1) preparing a high-concentration hydrogel solution and a low-concentration hydrogel solution; (2) preparing a CA-Alk working solution and a CA-Alk-containing hydrogel incubation solution; (3) cutting a wound on the fruit with a knife to expose pulp, soaking the wound of the fruit in a CA-Alk working solution for 24 hours, taking out the fruit, then coating the surface of the wound with a hydrogel incubation solution containing CA-Alk, and curing to form a first gel layer; and then coating the first gel layer with the high-concentration hydrogel liquid, and coating the first gel layer with a preservative film for fixation. According to the method, the integrity of pulp cells is almost not damaged when observed under an optical microscope, and the incubation time can last from original 1-2 days to 7 days or above. Meanwhile, due to in-situ incubation, the reaction on the lignin accumulation rule is more accurate.

The utility model relates to the technical field of vegetable packaging, in particular to a preservative film winding device for carrot packaging, and solves the problems that in the prior art, when carrots are packaged with preservative films, manual winding packaging is generally adopted, time and labor are wasted, and the packaging efficiency is high. And meanwhile, the compaction degree of the carrots wound with the preservative film can be greatly reduced. A preservative film winding device for carrot packaging comprises a frame body, one side of the outer portion of the frame body is fixedly connected with a driving motor through bolts, one side of the inner side of the frame body is rotationally connected with a rotating rod, one end of the rotating rod is fixedly connected with a bearing disc, and the other end of the rotating rod penetrates through the side wall of the frame body and is in transmission connection with an output shaft of the driving motor. According to the plastic wrap winding device, high-efficiency winding of plastic wrap is achieved, manpower and time cost are greatly saved, and the problem that time and labor are wasted in a traditional mode is solved.

The utility model discloses a packing device of an intelligent supermarket appliance limiting structure, and belongs to the technical field of packing equipment, the packing device of the intelligent supermarket appliance limiting structure comprises a semi-automatic preservative film packing machine, the top end of the semi-automatic preservative film packing machine is fixedly provided with a mounting shell, and the mounting shell is fixedly provided with a sealing ring; the device comprises a mounting shell, a limiting mechanism is arranged in the mounting shell, a moving mechanism is arranged at the top end of the mounting shell, an adjusting mechanism is arranged in the moving mechanism, and a shoveling mechanism is arranged in the adjusting mechanism. According to the semi-automatic preservative film packaging machine, the moving mechanism, the adjusting mechanism and the shoveling mechanism are arranged, so that packaged fresh products can be shoveled onto the shoveling plate rotating shaft, then the packaged fresh products slide downwards to any side of the semi-automatic preservative film packaging machine through the shoveling plate rotating shaft, and the packaged fresh products are conveyed through the conveyor; and continuous operation of the semi-automatic preservative film packaging machine is facilitated, and the packaging efficiency is greatly improved.

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.

The utility model relates to the field of weighing equipment, in particular to an intelligent fresh food weighing device. The utility model provides the intelligent fresh food weighing device which can be used for directly laminating and packaging fresh goods, can be used for conveniently bagging the goods, is simple to operate and improves the convenience of using the device. An intelligent fresh food weighing device comprises a weighing table, a fixing frame and the like, and the rear side of the weighing table is connected with the fixing frame. According to the utility model, a commodity is directly thrown into a plastic bag, then the plastic bag is taken out and delivered to a shopping user, and when the weighed commodity needs to be coated with a film, the preservative film on the fixed column can be pulled out, and then the preservative film is pasted on the fresh commodity, so that the fresh commodity can be directly coated and packaged, and the commodity can be conveniently bagged; and the operation is simple, and the convenience of using the device is improved.

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.