124 results about "Parafilm" patented technology

The invention discloses an automatic coffee capsule filling and sealing machine which comprises a filling mechanism, a powder compacting mechanism, a sealing film punching and sealing mechanism and a vacuumizing and nitrogen filling mechanism which are mutually combined for use to play a role. Compared with a traditional structure, the sealing film punching and sealing mechanism has the advantages that the knife is hidden in the base, and operators cannot be hurt during maintenance or operation, the size of the powder pressure is adjusted through the pressure of the powder rotating air cylinder, so that the capsule coffee is compacted, and the sealing film punching and sealing mechanism is simple in structure and convenient to operate; and secondly, in the operation process of each cycle, the starting and stopping positions of the sealing pressure head heating system are separated from the sealing opening film pressing cutter device, the vacuumizing and nitrogen filling mechanism vacuumizes the capsule cup filled with materials, directly sucks away air and supplements nitrogen into the capsule cup, and the almost oxygen-free environment in the capsule cup is achieved.

The utility model provides a clamping box and a wine bottle. The clamping box is used for containing a wine bottle with a bottle cap, and the bottle cap is sleeved with a rubber cap. The card box comprises a box body with an opening; the wine bottle is contained in the box body, and the bottle cap is close to the opening. A support plate; the supporting plate is connected with the box body and is arranged at the opening; the supporting plate is formed by extending a box body material, and the supporting plate can enter the box body after being bent; a positioning member; the positioning part is arranged on the supporting plate and is fixedly connected with the supporting plate; a sealing film; the sealing film is fixedly connected to the end, away from the supporting plate, of the positioning part or the inner wall of the end. And when the supporting plate enters the box body, the bottle cap can be inserted into the positioning part, so that the sealing film is adhered to the top of the rubber cap. The card box can effectively prevent a wine bottle contained in the box body or wine contained in the wine bottle from being replaced by a fake product in the process that a manufacturer transports the wine bottle to a buyer, and therefore the anti-fake purpose is achieved.

The utility model provides a steam-proof sealing mould on a wide-mouth bottle sealing machine, which relates to the technical field of sealing machine moulds and comprises a bottom plate, a bearing plate is arranged above the bottom plate, a placing groove is arranged on the bearing plate, a lower mould is fixedly connected to the bottom of the placing groove, and a mounting plate is arranged on the bearing plate. According to the sealing mold, the sealing film is pressed downwards through the film pressing assembly during sealing, so that the sealing film is sunken towards the interior of a bottle opening, a space for bulging of the sealing film is reserved, the welding position of the sealing film and the bottle opening is cooled, meanwhile, the sealing film is pressed to be attached to the bottle opening, and the situation that sealing is not tight due to steam leakage is avoided; the bottle is ejected out of the lower die through the material returning assembly after the bottle is sealed, so that an operator can take out the bottle conveniently, and the machining efficiency is improved.

The invention relates to a sealing cover and a container, the sealing cover comprises a first cover body (10), a pull ring (20) and a second cover body (30), the first cover body (10) is installed on a container body (40) in a sealing mode, the pull ring (20) is installed on the first cover body (10), the pull ring (20) is constructed to be capable of being pulled up to open the first cover body (10), and the second cover body (30) is installed on the first cover body (10) in a sealing mode. The container comprises a sealing cover. The sealing cover comprises the two cover bodies, at least two layers of sealing can be achieved, the sealing effect can be improved, and water vapor, oxygen and the like can be effectively blocked; moreover, the first cover body adopts the design of the pull ring, compared with a scheme adopting a sealing film, the bad use experience that a product is not easy to take out due to film residue and the like can be effectively improved, and compared with a scheme of tearing off the sealing film, the pull ring can be pulled off by one hand in a more labor-saving manner, and the opening is more convenient.

The utility model relates to the technical field of cutting devices, in particular to an automatic cutting machine for a sealing film. Comprising a mounting box, an unwinding roller, an upper pressing roller, a lower pressing roller, a cutter and two transmission assemblies. A through hole is formed in the mounting box; the unwinding roller is rotationally mounted on the inner side of the mounting box; the upper pressing roller is rotationally mounted on the inner side of the mounting box, the lower pressing roller is located below the upper pressing roller, a rotating frame is arranged on the inner side of the mounting box, the lower pressing roller is rotationally mounted on the rotating frame, and an elastic assembly is connected between the rotating frame and the bottom end of the inner wall of the mounting box; the cutter is located on the inner side of the mounting box, and the cutting base is arranged below the cutter. The two transmission assemblies are installed at the two ends of the inner side of the installation box correspondingly. Each transmission assembly comprises a rotary disc, a movable piece, a movable shaft, a gear ring and a gear. According to the technical scheme, when the sealing film is pulled to move, automatic cutting work of a film body can be achieved, the cutting lengths are the same every time, the practicability of the sealing film cutting device is improved, and waste of the film body is avoided.

The utility model discloses a capsule cup which comprises a hollow cup body, a first sealing film and a second sealing film, wherein the top end of the hollow cup body is provided with a water inlet and a first sealing film for sealing and covering the water inlet, and the bottom end of the hollow cup body is provided with a water outlet and a second sealing film for sealing and covering the water outlet; a plurality of water inlet holes are formed in the water division pressing piece, the water division pressing piece is arranged in an inner cavity of the hollow cup body, and a water injection cavity can be formed by the water division pressing piece and the first sealing film; a filter paper bag; a filter paper membrane; and a puncturing structure. When water is increased to a certain weight, the puncturing structure sequentially acts on the filter paper membrane and the sealing membrane, liquid filtered for the first time directly flows to the crevasse of the sealing membrane and then flows through the water outlet to be discharged, and the filter paper bag is utilized to ensure that the filter function can still be realized under the condition that the filter paper membrane is damaged; and on the other hand, the two times of filtering can enable the liquid to be filtered to be finer and more smooth, and the taste of the beverage can be improved.

The utility model discloses a sauce material sealing machine which comprises a platform, a main body frame, a rotating shaft adjusting mechanism, a mounting clamping mechanism and an adjusting auxiliary mechanism, and the rotating shaft adjusting mechanism comprises a driving shaft assembly, a sealing film shaft, an adjusting shaft, a clamping pipe, a clamping rod, a lateral plate and an adjusting plate. The installation clamping mechanism comprises a clamping groove, an extending spring rod, a rotating ring, a pushing block, a locking block, a directional ring and a locking frame, the position and the tensioning degree of a sealing film can be accurately adjusted through cooperation of a driving shaft assembly, a sealing film shaft, an adjusting shaft and other components, and therefore it is guaranteed that the sealing effect is uniform and stable, and the clamping rod and a clamping pipe are matched to achieve the effect of sealing. Clamping and fixing can be rapidly achieved, the operation time is shortened, the working efficiency is improved, through the matched design of the orientation ring, the lock frame and the lock block, the clamping ring and the clamping rod can be stably fixed to the proper position, loosening caused by vibration or external force in the working process is avoided, and the accuracy of sealing work is ensured.

The utility model discloses a sealing device for recombined collagen dressing, which belongs to the technical field of dressing packaging and comprises a support frame, a hot pressing component, two unwinding rollers, two guide components, a first sealing film, a second sealing film and a limit component. Hot pressing plates are connected to the surfaces, close to each other, of the two air cylinders; the two unwinding rollers are rotationally connected into the supporting frame. According to the sealing device, in the process that the guide roller guides the first sealing film and the second sealing film, the two sets of limiting plates can limit the first sealing film and the second sealing film respectively, so that the first sealing film and the second sealing film cannot deviate in the moving process; according to the dressing hot-sealing device, the two hot-pressing plates close to each other can conduct hot sealing on dressing located between the first sealing film and the second sealing film with high quality, and due to the fact that the distance between the two limiting plates in the same guide roller is adjustable, the applicability of the dressing hot-sealing device is improved.

1. Name of the design product: Sealing machine scissor holder. 2. Use of the design product: This design product is used for installing blades on a sealing machine to cut sealing film. 3. Design key points of the design product: Lies in the shape. 4. Picture or photograph that best shows the design key points: Perspective view.

The present invention discloses an automatic film-sealing device for the mouth of a plastic bottle and its working principle. The device includes a machine and a control circuit. The machine is provided with a turntable, and four groups of heat-sealing heads are evenly distributed around its rotation center on the turntable. The heat-sealing heads are electrically connected to the control circuit. The machine is provided with a film-cutting mechanism for cutting out a sealing film from an aluminum-plastic composite film, a film-loading mechanism for moving the sealing film to the heat-sealing head, a bottle-releasing mechanism for inserting the plastic bottle into the heat-sealing head with the sealing film, a bottle-pressing mechanism for applying pressure to the plastic bottle on the heat-sealing head, and a bottle-removing mechanism for removing the plastic bottle from the heat-sealing head. The turntable drives the heat-sealing head to the film-loading mechanism, the bottle-releasing mechanism, the bottle-pressing mechanism, and the bottle-removing mechanism in sequence for processing. This device can automatically complete the automatic film sealing of the mouth of the plastic bottle, has high production efficiency, good sealing effect, safety and reliability, can improve sealing quality while saving labor costs, and can replace manual film-sealing processes.

The present invention relates to an efficient automatic puncturing capsule bread machine, which comprises a body. A flour capsule box with a sealing film is inverted at the upper cover of the body, and a corresponding feeding port is provided there. A puncturing assembly for puncturing the flour capsule box is provided at the feeding port. The puncturing assembly includes a fixed seat and a serrated knife. The fixed seat is provided with an annular slot surrounding the feeding port, and a C-shaped serrated knife is embedded in the annular slot. The bottom of the serrated knife is connected to a lifting driving member, so that the serrated knife can extend out of the annular slot and puncture three sides of the sealing film of the flour capsule box. In the present invention, the serrated knife is actively lifted upward by the lifting driving member to puncture the sealing film of the flour capsule box, which improves the operation safety of the product compared with the manual pressing operation mode of existing products. The serrated knife is C-shaped, which can puncture three sides of the sealing film simultaneously. Compared with the puncturing assembly with a rotary cutting structure, the film-breaking speed is fast and the efficiency of the product is improved.

The utility model discloses a mashed sweet potato packaging machine with a sealing film roll positioning structure, which comprises a packaging table, two symmetrically arranged side plates are fixedly mounted at the top of the packaging table, arc-shaped grooves are formed in the surfaces of the side plates, film rolls are arranged in inner cavities of the arc-shaped grooves, supporting plates are welded on the surfaces of the side plates, and the sealing film roll positioning structure is arranged on the supporting plates. A T-shaped plate is fixedly mounted at the top of the supporting plate, a lug block is fixedly mounted on the surface of the T-shaped plate through a bolt, a rack is slidably connected to the inner wall of the lug block, and an arc-shaped block is fixedly connected to the end of the rack. The rack is driven to move through swinging of the toothed plate, then the rack positions the position of the film roll in the arc-shaped groove through the arc-shaped block, the position of the sealing film roll in the limiting groove can be conveniently and rapidly positioned, the stability of the film roll in the rotating process is improved, and then the purpose of guaranteeing the smoothness of the sealing film in the pulling-out process is achieved.

The invention provides a boiling-resistant traceless sealing film for an aluminum foil box and a preparation method of the boiling-resistant traceless sealing film, and relates to the field of packaging. Comprising a PET layer, an aluminum foil layer, a BOPA enhancement layer and a heat sealing layer, wherein the BOPA enhancement layer comprises BOPA resin, organic modified montmorillonite, quaternary ammonium salt nano cellulose, a composite antioxidant, a lubricant and a compatilizer; the heat sealing layer comprises metallocene polyethylene, ethylene-vinyl acetate, maleic anhydride grafted polyethylene, a lubricant, thiolated nano zinc oxide, chitosan, organic modified montmorillonite and antibacterial modified silicon dioxide; the aluminum foil layer is made of chitosan-cellulose modified aluminum foil. The sealing film has the advantages of being high in strength, easy to tear off and good in antibacterial property.

The invention discloses a crawler-type automatic hole filling device for mine blast holes, and belongs to the technical field of mine blasting, the crawler-type automatic hole filling device comprises a crawler-type chassis, a water conveying assembly, a film releasing assembly, an end heat sealing assembly, a side heat sealing assembly, a film clamping and conveying assembly, a former and a case, the side face heat sealing assembly can seal the side face of a film, the film clamping and conveying assembly clamps and conveys the film, and the end heat sealing assembly seals the end of the film. The control system cooperates with the water conveying assembly, the film releasing assembly, the end heat sealing assembly, the side face heat sealing assembly and the film clamping and conveying assembly to work, a series of process automatic operations such as water injection, sealing and hole filling are completed, the single hole filling time is greatly shortened, the efficiency is greatly improved compared with manual work, the manual labor intensity is reduced, and the production efficiency is improved. And the number of hole filling operators is reduced.

The utility model relates to the technical field of packaging equipment, and discloses a sealing machine which comprises a rack, a film feeding mechanism, a film collecting mechanism, a sealing mechanism and a bracket mechanism, the film feeding mechanism, the film collecting mechanism, the sealing mechanism and the bracket mechanism are arranged on the rack, the film feeding mechanism and the film collecting mechanism are located on the two sides of the rack respectively, and the sealing mechanism is located between the film feeding mechanism and the film collecting mechanism. The bracket mechanism is located below the sealing mechanism, a film guiding mechanism located between the film feeding mechanism and the sealing mechanism is arranged on the rack and comprises an installation frame, a film guiding shaft and a fixing bolt, an adjusting hole formed in the height direction is formed in the installation frame, and the fixing bolt penetrates through the adjusting hole to enable the installation frame to be fixed to the rack. The film guiding shaft is rotationally connected to the mounting frame, and the sealing film is sequentially wound around the film feeding mechanism, the film guiding shaft and the film collecting mechanism. The utility model ensures that the seal is sealed tightly and stably to reach the central position for sealing, improves the product quality stability, reduces the defective rate and improves the production efficiency.

The utility model discloses a film sealing device, which relates to the technical field of laboratory detection and comprises a film sealing device main body, a fixing strip is fixedly connected to the front side of the outer surface of the film sealing device main body, a silica gel strip is fixedly connected to the front side surface of the fixing strip, and sealing fine teeth are fixedly connected to the outer surface of the film sealing device main body and correspond to the fixing strip. An extending opening is formed in the tail end of the left side of the film sealing device body in a penetrating mode, a movable block is slidably connected to the interior of the film sealing device body, an elastic piece is fixedly connected to one side of the movable block, an inclined film prying part is arranged at the tail end of the elastic piece, and an extrusion spring is fixedly connected to the side, away from the elastic piece, of the movable block. A clamping groove is formed in the side, close to the sleeve, of the movable block. The PCR plate sealing device has the advantages that the sealing film and the PCR plate are ensured to be tightly attached by using the film sealing device, and a PCR product is effectively prevented from being volatilized in an experiment process by the tight attachment, so that the accuracy and the reliability of an experiment result are ensured.

The tissue box sealing film comprises a film body, an expansion opening and a tissue taking hole are formed in the film body, the expansion opening is communicated with the tissue taking hole, a tearing piece is arranged in the tissue taking hole, the tearing piece is connected to the film body in a breakpoint mode, and the expansion opening is combined with the tissue taking hole. The sealing film is expanded when paper is taken, meanwhile, the paper taking hole facilitates twisting and taking of the paper, the specially-arranged paper taking hole enables paper towels to be extracted more easily, meanwhile, the tearing trouble is reduced, the paper taking efficiency and convenience are improved, due to the arrangement of the tearing piece, a user can open the paper taking hole through the simple tearing action, and the paper taking efficiency and convenience are improved. Due to the breakpoint connection design of the tearing piece, the situation that the film is torn difficultly or torn incompletely is avoided when the film is torn, and therefore the convenience of a user is improved.

The utility model provides a multifunctional yoghurt cup cover which comprises a cup cover body, a turnover part is integrally formed in the middle of the cup cover body, and the cup cover body can be folded and opened along the turnover part. The cup cover body is provided with a turnover part, the turnover part divides the cup cover body into a digging spoon cover body and a straw cover body, the top of the digging spoon cover body is connected with a digging spoon through an easily-broken structure, the interior of the straw cover body is rotationally connected with a straw, and the top of the straw cover body is provided with a cover bolt assembly used for puncturing a sealing film in the direction of a virtual extension line of the straw; the spoon and the straw are integrated on the cup cover body, so that yoghurt eating modes are enriched, a lot of production materials are saved, cost is reduced, the total amount of non-degradable pollutants can be reduced when yoghurt eating tools are discarded under the condition that the yoghurt eating tools are not stuck, and the cup cover is more environment-friendly.

The present invention provides an automatic film sealing machine, comprising a support part, a feeding mechanism is arranged at a feeding port at the top of the support part, a material feeding and leveling mechanism is arranged at the top of the support part, a bearing part is fixedly connected to one side of the support part, a sealing mechanism is arranged at the top of the bearing part, and a film coating mechanism is arranged at the top side of the bearing part. The rotation of a transmission motor drives a leveling and pressing cylinder to rotate, so that the leveling and pressing cylinder can seal the sealing film material during the rotation process. When the connecting blocks inside the connecting grooves at both ends of the leveling frame are installed and engaged, the leveling wheels on the symmetrical rotating shafts rotate, which is convenient for conveying the sealing plastic film to the bottom of the sealing mechanism for sealing.

An ingredient blending device comprises a rack, a supporting frame for supporting a crucible with an upward opening is arranged on the rack, and a sealing film is arranged at the position, above the supporting position of the crucible, of the rack. The crucible moves upwards along with the supporting frame to the position of the sealing film with the film face located at the horizontal position, and when the film blocks the opening of the crucible in a sealed mode, the driving shaft drives the machine frame to rotate in the plumb plane. When the machine frame stops rotating and resets to the locking position where the opening of the crucible faces upwards, the cutting unit cuts out a film cutting piece blocking the opening area of the crucible on the sealing film, and the film smashing unit abuts against and pushes the film cutting piece to move towards the interior of the crucible. The sealing film is used for sealing the opening of the crucible, the cutting unit can cut off the film body blocking the area of the opening of the crucible, and the film body is pushed into the crucible by the film smashing unit and is fused together with materials, so that the loss of original materials in the crucible is avoided, and the fused film body does not influence the subsequent detection result.

The utility model relates to the technical field of fresh-keeping packaging, and discloses a modified atmosphere fresh-keeping packaging machine which comprises two conveying assemblies, a conveying belt is arranged in each conveying assembly, the two conveying assemblies are arranged in an L shape, a pushing assembly is arranged above one conveying assembly, the pushing assembly corresponds to the other conveying assembly in position, and the conveying belt is arranged above the pushing assembly. A pushing assembly is arranged on one conveying belt, a discharging assembly and a collecting assembly are arranged above the conveying assembly on the side away from the pushing assembly, the food boxes are conveyed through the two conveying assemblies, the food boxes are conveniently pushed to the other conveying belt through the pushing assembly, and the multiple food boxes are limited through a limiting assembly; and then the material collecting assembly pulls the sealing film, the guiding assembly plays a role in guiding the sealing film, then the heat sealing assembly plays a role in sealing the food box with the film, intervention of workers is reduced, mechanical automation engineering is enhanced, and the food film sealing and packaging efficiency is improved.

The invention provides a universal easy-to-uncover sealing film which comprises a printing layer, a barrier layer, a bonding layer and a heat sealing layer, the printing layer and the heat sealing layer are bonded on the barrier layer through the bonding layer, and the heat sealing layer comprises the following components in parts by mass: 40-60 parts of POE, 20-40 parts of EVA, 10-30 parts of ionomer resin, 10-30 parts of a nano composite additive and 0.6-3 parts of a modified additive. The invention further provides a preparation method of the universal sealing film easy to uncover. Compared with the prior art, the problem that an existing sealing film is not easy to uncover can be solved.

The utility model relates to a fish can convenient to uncover, which belongs to the technical field of cans and comprises a can body with an upward opening and an accommodating cavity formed inside, a sealing film for sealing is hermetically connected to the opening of the can body, and the top of the can body is in threaded connection with a can cover with a downward opening in the vertical direction. The can cover extends outwards in the vertical direction to form a thickened area, an operation inserting groove is formed in the thickened area, a film scratching assembly used for scratching the sealing film is arranged in the operation inserting groove, first anti-skid lines are arranged on the outer side wall of the can cover in a circumferential array mode, and internal threads are formed in one end of the operation inserting groove. An operator can directly rotate by hands, the surface of the can cover is provided with first anti-skid lines, and if the can cover is difficult to open by hands, an external rod body can be inserted into the operation slot, the operation slot is used as a fulcrum to drive the can cover to rotate, and acting force is applied by utilizing the lever principle, so that the can cover can be unscrewed in a labor-saving manner.

The application discloses a method for reducing vitrification of anther culture regenerated plants, and belongs to the technical field of plant tissue culture. The method comprises the following steps: inoculating anthers into a culture bottle containing a culture medium, covering a layer of breathable sealing film on the bottle mouth of the culture bottle, and tightening the breathable sealing film with an elastic band; then covering a layer of non-breathable sealing film on the outer layer of the breathable sealing film, and tightening the non-breathable sealing film with a rubber band; when embryoid is induced to be generated in 20-25 days, the covered non-breathable sealing film is removed, and only the breathable sealing film is left. The application has the following advantages: when the anthers are subjected to high-temperature treatment, the humidity in the culture bottle is not too low due to the covering of the non-breathable sealing film, and the survival of immature pollen is not affected; when embryoid is induced to be generated in 20-25 days, the non-breathable sealing film is removed, and only the breathable sealing film is left, so that the embryoid will not be vitrified due to excessive humidity; and the suitable humidity in the culture bottle can be realized only by covering or not covering the non-breathable sealing film, so that the workload of large-scale production of haploid plants is reduced.

The utility model discloses a film feeding device for a vermicelli sealing machine, which relates to the technical field of sealing machines, is applied to a sealing machine body, and comprises an unwinding roller rotationally arranged on the side wall of the sealing machine body, a sliding block arranged in the side wall of the sealing machine body, a screw rod arranged in the sliding block, and a second motor arranged at the end part of the screw rod, a semi-arc plate is arranged at the outer side end of the sliding block, a sleeve sleeves the outer side of the semi-arc plate, a plurality of uniformly distributed air outlet holes are formed in the outer side of the sleeve, an exhaust fan is arranged at the air inlet end of the semi-arc plate, a sealing film is wound on the unwinding roller, and the free end of the sealing film bypasses the upper end of the sleeve and extends downwards; the sealing surface of the sealing film is dedusted, so that the sealing quality of the vermicelli packaging box is improved.

The invention discloses a sealing film punching and sealing mechanism which comprises a sealing rolled film conveying system, a sealing main driving mechanism, a sealing pressure head device and a sealing pressed film cutter device which are mutually combined to play a role, compared with a traditional structure, the sealing film punching and sealing mechanism is equivalent to a fixed die and is fixed to a base, and the sealing rolled film conveying system, the sealing main driving mechanism, the sealing pressure head device and the sealing pressed film cutter device are mutually combined to play a role. A traditional structure is generally characterized in that a cutter is placed on the base and is equivalent to a movable die, and the device has the advantages that firstly, the cutter is hidden in the base and cannot hurt operators during maintenance or operation, and secondly, in the running process of each cycle, the starting and stopping positions of a sealing pressure head heating system are separated from the opening-opening film-pressing cutter device, for example, when the device is shut down, the cutter cannot be damaged. The bottommost heating ironing block of the sealing pressing head heating system is arranged on the sealing film pressing cutter device, heat transferred to a sealing cutter body is reduced, cold cutting is achieved as far as possible during punching, and burrs are greatly reduced.

The invention provides a paraffin sealing film as well as a preparation method and application thereof, and belongs to the field of polymer modification. The invention provides a paraffin sealing film, which is prepared from the following raw materials in parts by mass: 10 to 85 parts of polyolefin elastomer; 8 to 65 parts of liquid rubber; 8-55 parts of a plasticizer; and 0-10 parts of an auxiliary agent. According to the invention, the elastic polyolefin elastomer is used as a main component, the liquid rubber is added to adjust the processability, the flexibility, the sealing property, the adhesive property and the like of the film, and the plasticizer is added to adjust the toughness, the lubricating property, the adhesion property and the like of the film; the main components and double bonds contained in the liquid rubber can be crosslinked at high temperature under electron beam irradiation, and the obtained film material is further controlled to have higher crosslinking degree, so that the film material has higher strength, flexibility, oil resistance and chemical reagent resistance.

A full-sealing easy-to-tear sealing film for barreled water is of a barrel-shaped structure which is formed by integrally folding a sealing film and then bonding folded joints together through hot melting, the lower end of the barrel-shaped structure is open, the barrel-shaped structure comprises an outer edge area and a barrel body area, and a center area is bonded to the middle position of the outer edge area through hot melting. And two parallel cutting lines are arranged on the central area, the outer edge area and the barrel body area. The easy-to-tear sealing film for the barreled water has the remarkable beneficial effects of improving the user experience, ensuring the sealing performance, guaranteeing the health of drinking water, expanding the application range and the like.

The application provides a paper-plastic sealing film and a preparation method and application thereof, and relates to the technical field of sealing films.The preparation method of the paper-plastic sealing film comprises the following steps: S1, a single-component polyurethane adhesive is coated on one side of a paper base layer to form a first adhesive layer, a printing layer is first combined with the first adhesive layer, winding is performed, and first aging is performed; S2, a single-component polyurethane adhesive is coated on the other side of the paper base layer to form a second adhesive layer, a polyester film layer is secondly combined with the second adhesive layer, winding is performed, and second aging is performed; and S3, a two-component polyurethane adhesive is coated on the side of the polyester film layer which is not combined to form a third adhesive layer, a polyolefin film is thirdly combined with the third adhesive layer, winding is performed, and third aging is performed.The paper-plastic sealing film prepared by the method has the advantages of improved flatness, excellent composite strength, no delamination, and no bubbles after heat sealing.