365 results about "Cast films" patented technology

The invention belongs to the technical field of high polymer materials, and particularly relates to a PVB (Polyvinyl Butyral) film and a preparation method thereof. The PVB film provided by the invention is prepared from the following components in parts by mass: 100 parts of PVB resin, 33 to 36 parts of triethylene glycol di-2-ethylhexoate, 7 to 9 parts of integrated anti-radiation toughening filler, 1 to 2 parts of organic montmorillonite, 0.8 to 1.2 parts of composite coupling agent, 0.5 to 1 part of ultraviolet light absorber, 0.6 to 0.8 part of antioxidant and 0.8 to 1 part of heat stabilizer. The integrated anti-radiation toughening filler adopts a core-shell structure, the anti-radiation core is composed of bismuth oxide and tungsten oxide according to the mass ratio of 3: 1, and the elastic coating layer is maleic anhydride grafted modified POE. The preparation method comprises the steps of pre-dispersion treatment, component mixing, melt extrusion, film casting, graded cooling, two-way stretching and the like. Through the core-shell structure design of the integrated anti-radiation toughening filler and the optimized processing technology, the anti-radiation performance and the toughening performance are synergistically improved, and the prepared film has the advantages of excellent anti-radiation effect, high toughness and good transparency.

The invention discloses an automatic cast film defect detection method and system based on an improved YOLOv8 model and a multi-threshold mask segmentation algorithm, and the method comprises the steps: obtaining a defect picture for defect detection through the collection and preprocessing of surface image data of a cast film; a defect detection model based on an improved YOLOv8 model is constructed, the detection precision and stability of the model on a tiny target are improved through an NWD loss function, defect pictures are input into the detection model, and center point coordinates of each prediction defect target frame are output after model detection, so that accurate position information of the defect is provided; according to the predicted position of the defect target frame, extracting the target frame and segmenting the area by adopting a multi-threshold mask segmentation algorithm to obtain a fine defect area and features; and carrying out statistical analysis on the extracted defect features, and generating a batch detection report. According to the invention, automatic detection and classification of the surface defects of the casting film can be realized, and high-precision real-time detection capability is realized.

The invention discloses a multi-roller system used after cast film stripping and a stripping chamber with the multi-roller system. The multi-roller system comprises a guide roller, a traction roller and a gravity roller which are arranged on a rack of the multi-roller system. The traction roller is located on the downstream side of the stripping roller, and one or more guide rollers are arranged between the traction roller and the stripping roller at intervals; the traction roller comprises two driving rollers which are arranged adjacently, and the film conveying path is of an S-shaped structure at the traction roller; the gravity roller is located on the downstream side of the traction roller, and the gravity roller and the gravity roller balance weight mechanism are arranged on the same closed chain or arranged on the two closed chains through a synchronous transmission mechanism respectively. According to the scheme, the problems that embossing is generated, the film thickness is affected and the like are avoided, constant tension is provided through gravity or other modes, tension adjustment is achieved, and micro longitudinal stretching is carried out; therefore, the film quality is improved. A negative pressure air curtain device is preferably arranged in the stripping chamber, so that the process environment control stability and the system safety are remarkably improved.

Provided are linear low density polyethylene (LLDPE) compositions including a LLDPE polymer and from 100 ppm to 10,000 ppm of a polymer processing aid (PPA) that is substantially free of fluorine-containing compounds. The non-fluorine-containing inventive PPAs may be a polyphosphite, a polysiloxane, a polyethylene glycol, a high MFR polypropylene, a high MFR polybutene-1, a metal salt of a fatty acid, a polyamide, or a boron nitride. Also provided are polyolefin masterbatches including from 1 wt. % to 50 wt. % of such inventive PPAs and methods of decreasing melt fracture % in linear low density polyethylene films by blending such inventive PPAs and polyolefin masterbatches into cast films and blown films during extrusion processing.

The invention discloses a high-speed adhesive film tape casting forming machine which comprises an extrusion die, a first cooling roller, a second cooling roller and a third cooling roller and further comprises a conveying belt support fixed to a roller support, and a first tensioning roller and a second tensioning roller are rotationally supported on the conveying belt support. A conveying belt deviation rectifying device is further installed on the conveying belt support. A rubber film conveying belt is wound on the tensioning roller I, the tensioning roller II, the cooling roller III, the cooling roller II, the cooling roller I and the conveying belt deviation rectifying device; a glue film temperature control device is mounted on the conveying belt bracket, and the glue film conveying belt penetrates through the glue film temperature control device; the adhesive film temperature control device comprises a temperature control box body installed on the conveying belt support, two air uniformizing pore plates are fixedly installed in the temperature control box body, and the adhesive film conveying belt penetrates through the space between the two air uniformizing pore plates which are parallel to each other and spaced. The high-speed casting forming machine not only can effectively improve the production efficiency of the casting film, but also can ensure the stability of the production quality of the casting film.

The cross-linked anion exchange membrane based on styrene copolymerized vinylbenzyl chloride has high ionic conductivity and high mechanical strength. According to the technical scheme, the crosslinking process and the membrane forming process are synchronously carried out, the difficulty of casting and membrane laying is not increased while a crosslinking structure is constructed, and the anion exchange membrane has the characteristics of high ionic conductivity and high mechanical strength and is suitable for large-area casting membrane preparation. In addition, the preparation method in the technical scheme is simple in process and relatively low in cost, and has relatively good industrialization potential. The invention relates to a cross-linked anion exchange membrane based on styrene copolymerized vinylbenzyl chloride. The chain structure of the cross-linked anion exchange membrane is as shown in the following formula: # imgabs0 #, wherein A is a unit containing a quaternary amine structure or an imidazolium structure; and B is a unit of a biquaternary amine group with a double-bond alkyl chain, or a unit of an imidazole group with a double-bond alkyl chain.

The invention provides a degradable breathable composite film based on a gradient microporous structure and a preparation method and application thereof, and belongs to the field of protective materials.The preparation method comprises the steps that PLA, PBAT, ADR, CaCO3 and modified master batches are subjected to melt blending in proportion, a three-layer casting film is prepared through three-layer casting film forming equipment, the three-layer casting film is formed through a stretching technology, and a gradient breathable film is obtained; a PLA non-woven fabric is prepared through a melt-blowing or spun-bonding technology; and compounding the gradient breathable film with a PLA non-woven fabric to obtain the degradable breathable composite film based on the gradient microporous structure. The three-layer casting co-extrusion process is adopted, the gradient porosity breathable film and the hydrophilic / hydrophobic design are combined, the comprehensive performance of the protective material is effectively improved, the moisture permeation amount of the material is increased, the hydrostatic pressure of the material is improved, and therefore the barrier property and comfort of the material are enhanced. The blocking layer is made of a porous membrane material formed by stretching PLA and PBAT composite CaCO3, the comfortable layer is made of a PLA spunbond / melt-blown non-woven fabric material, and full degradation of the protective material is achieved.

The invention relates to the technical field of casting film coating, in particular to film coating equipment for alloy steel casting machining, which comprises a base, a winding mechanism, a positioning mechanism and a heating mechanism, and the winding mechanism comprises a mounting plate, an avoiding groove, an arc-shaped ring, an unwinding roller, a rotating assembly and a driving assembly. The positioning mechanism comprises a first transmission assembly, two mounting bases, two motors and four abutting assemblies, the heating mechanism comprises a conveying assembly, two spray heads, two swing assemblies and two second transmission assemblies, the heating mechanism is arranged, hot air can be blown to a protective film on the surface of a wound casting through the spray heads on the two sides, heating of the protective film is achieved, and the protective film can be heated conveniently. The protective film can be tightly attached to the surface of the casting, the protection effect on the casting is improved, damage to the casting in the transportation process is reduced, and the corrosion resistance, rust resistance and anti-oxidation effect of the casting are improved.

Cast film made from terpolymers, and terpolymers containing units derived from propylene, ethylene and 1-butene.

The utility model relates to the technical field of cast film processing, and discloses a cast film splitting machine which comprises a supporting frame, a cutter roller is rotationally connected to the top end of the inner surface of the supporting frame, a cutter adjusting mechanism is arranged on the outer surface of the cutter roller, and the cutter adjusting mechanism comprises a cutter base. The inner surface of the tool base is slidably connected with the outer surface of the tool roller, the inner surface of the tool base is elastically connected with a cylinder through a spring A, a T-shaped groove is formed in the bottom end of the inner surface of the tool base, a clamping block is fixedly connected to the bottom end of the outer surface of the cylinder, and the outer surface of the clamping block is rotatably and slidably connected with the T-shaped groove. According to the cutter adjusting mechanism, when the cutter needs to be adjusted, the fixing effect of the fixed cutter and the cutter roller can be relieved only by pressing the rotary cylinder downwards, the width of the cutter can be rapidly adjusted without using a tool, and the effect of shortening the downtime is achieved.

The invention relates to an ultrahigh-temperature-resistant tab adhesive, which has the following structure: D / C / B / A / PET / A / B / C / D. PET is a polyethylene glycol terephthalate film layer, A is an alkane dry-process composite adhesive layer, B is a polypropylene layer, D is a maleic anhydride modified polypropylene layer, and C is a pigment layer. The pigment layer C particles are prepared by adding carbon black into maleic anhydride modified polypropylene in proportion for granulation and then mixing with maleic anhydride modified polypropylene thinner particles according to a designed chromaticity proportion; processing the B-layer material particles, the C-layer material particles and the D-layer material particles into a co-extrusion cast film; the double-sided composite co-extrusion cast film technology is adopted for PET, the processing technology is simple, materials are easy to obtain, the cost is greatly reduced, and it is proved that the film is stable in performance, can meet the performance requirements of lithium battery materials and can completely replace imported tab films.

The invention relates to the technical field of tensile testing of cast films, in particular to a tensile property testing device for a single-layer TPEE cast film, and effectively solves the problems that errors are easy to occur and the efficiency is low due to manual sample preparation, and the efficiency is low and the consistency is poor due to the fact that a sample needs to be manually clamped. Comprising a base, a sample preparation table is fixedly connected to the right side of the upper end of the base, a single-layer cast film is arranged on the sample preparation table, a sample preparation groove is formed in the sample preparation table, a sample preparation cutter is arranged above the sample preparation table, and a driving assembly located below the sample preparation table is arranged in the base; the driving assembly controls the sample preparation cutter and the sample preparation groove to cooperatively act, automatic cutting of a single-layer TPEE cast film is achieved, it is guaranteed that the sizes of samples are consistent, the edges of the samples are flat, the problem of size errors or burrs caused by manual operation is avoided, horizontal movement is converted into vertical cutting action through the linkage design of the stepped driving groove and the moving rod, and the production efficiency of the TPEE cast film is improved. The cutting precision and efficiency are improved, and the problem that traditional manual sample preparation is poor in consistency is solved.

The utility model belongs to the technical field of screening machines, and particularly relates to a raw material screening machine for polyethylene cast film production, which comprises a screening box, a feeding port is connected to the top end of the screening box, a discharging port is connected to the side wall of the screening box, a base is arranged at the bottom end of the screening box, a first spring is connected to the bottom end of the screening box, and a second spring is arranged at the bottom end of the screening box. The bottom end of the screening box is connected with a vibration motor, a screen is arranged in the screening box, a fixing block is installed in the screening box, the bottom end of the fixing block is connected with a second spring, a limiting block is further installed in the screening box, and the side wall of the screening box is connected with a supporting plate. According to the screening machine, a second spring is matched with a limiting block, then a knocking rod is used, the screen and the limiting block are collided, and therefore raw materials blocking a screen opening are shaken off, the situation that the screen is blocked is avoided, and the screening efficiency of the screening machine is further improved.

Provided are a method for producing a cellulose acylate film, which makes it possible to produce a film having a reduced amount of residual solvent and a reduced amount of elution with good productivity even in a case where the film is relatively thick; and a cellulose acylate film. A cellulose acylate film (23) is produced by a method for producing a cellulose acylate film, the method including a casting step of forming a cast film by casting a dope (14) containing a cellulose acylate (11), a sugar ester derivative, and a polyester having a weight-average molecular weight in a range of 50000 or more and 1000000 or less and represented by a specific formula on a support; and a peeling step of peeling the cast film from the support.

Provided are linear low density polyethylene (LLDPE) compositions including a LLDPE polymer and from 100 ppm to 10,000 ppm of a polymer processing aid (PPA) that is substantially free of fluorine-containing compounds. The non-fluorine-containing inventive PPAs may be a polyphosphite, a polysiloxane, a polyethylene glycol, a high MFR polypropylene, a high MFR polybutene-1, a metal salt of a fatty acid, a polyamide, or a boron nitride. Also provided are polyolefin masterbatches including from 1 wt. % to 50 wt. % of such inventive PPAs and methods of decreasing melt fracture % in linear low density polyethylene films by blending such inventive PPAs and polyolefin masterbatches into cast films and blown films during extrusion processing.

The utility model relates to a cooling roller for cast film processing, which is characterized in that a first support plate and a second support plate are respectively arranged at two ends of the upper surface of a fixed bottom plate, a connecting shaft is transversely and rotatably arranged at the upper end of the first support plate in a penetrating manner, the connecting shaft is externally connected with a driving motor, and a cooling roller body is positioned between the first support plate and the second support plate. A cooling water inlet pipe is transversely and fixedly arranged at the center of the mounting block in a penetrating manner, a pipeline a is fixedly arranged at the lower end of the mounting block in a penetrating manner, the left end of the cooling water inlet pipe is located in the cooling roller body and is vertically provided with a plurality of nozzles, and the right end of the cooling water inlet pipe is fixedly connected with the second supporting plate in a penetrating manner; the middle water tank is located on the outer side of the second supporting plate, a booster pump is arranged in the middle water tank, the left side communicates with the pipeline a, the right side is externally connected with a water cooler through a pipeline b, and the water cooler communicates with the cooling water inlet pipe through a water inlet guide pipe. The utility model has the advantages of stable and reasonable structural design and good use effect.

The utility model discloses a cooling mechanism for cast film forming, which relates to the technical field of cast film cooling and comprises a mounting frame, a plurality of rotating shafts are rotatably mounted on the mounting frame, outer rollers are sleeved on the rotating shafts, roller covers are symmetrically arranged at two ends of each outer roller, water-proof cabins are arranged on opposite surfaces of the roller covers, through holes are formed in the rotating shafts, and the outer rollers are sleeved on the rotating shafts. The rotating shaft is provided with a rectangular through hole in the waterproof cabin section; according to the utility model, the mounting frame is matched with the rotating shaft, so that the cooling mechanism can be stably built and flexibly rotated, and the structural stability and the running smoothness are improved; the outer roller is matched with the roller cover and the waterproof cabin, so that a sealed cooling space is conveniently constructed, the sealing performance is improved, and the leakage of cooling liquid is prevented; the rotating shaft through hole is matched with the rectangular through opening and the spiral heat dissipation pipe, so that the cooling liquid uniformly circulates to absorb heat, the cooling uniformity is improved, and the cast film is uniformly cooled; finally, the problem that a traditional cooling mechanism is uneven in cooling is solved, and the cooling effect and production efficiency are improved.

The utility model discloses a universal cast film machine, and relates to the technical field of cast film machines. The device comprises a rack, a discharging cover is fixedly connected to the top of the rack, a discharging pipe is arranged in the discharging cover, one end of the discharging pipe penetrates through the discharging cover and is fixedly connected with a mold, the discharging pipe communicates with the mold, mounting plates are arranged on the two sides of the top of the rack, and two cooling rollers are rotationally connected between the mounting plates on the two sides of the lower portion of the mold. Two traction rollers are rotationally connected between the two mounting plates, a winding roller is rotationally connected between the mounting plates on the two sides below the traction rollers, a rim charge hand expansion roller is rotationally connected between the mounting plates on the two sides below the winding roller, and a warning mechanism is arranged at the top of the mounting plate on one side. The control panel controls the buzzer to start so as to remind a worker to replace the winding roller, and the shutdown condition of a production line can be reduced by replacing the winding roller in time.

The utility model relates to the field of cast film winding machines, and discloses a cast film winding machine with an adjusting function, which comprises a bottom plate, the middle part of the top end of the bottom plate is fixedly connected with a motor I, the driving end of the motor I is fixedly connected with a telescopic rod, and the top end of the telescopic rod is fixedly connected with a fitting block; first rotating blocks are slidably connected to the left side and the right side of the top end of the attaching block, second rotating blocks are slidably connected to the front side and the rear side of the top end of each first rotating block, three soft strips are fixedly connected to the top ends of the second rotating blocks, and a linear displacement sensor is fixedly connected to the middle of the top end of the bottom plate. According to the utility model, the cast film is tightly wrapped according to the change of the thickness and the curved surface of the cast film, the thickness change of the cast film can be coped, uniform pressure is ensured to be obtained on the surface of the whole film, the cutting width of the cast film can be automatically adjusted, and the requirement of manual adjustment can be reduced, so that the time and the labor force of operators are saved.

The utility model discloses a cast film folding machine which comprises a leading-in frame, a leading-out frame and an installation frame installed between the leading-in frame and the leading-out frame, an unwinding roller is arranged in the leading-in frame, a cast film body is connected to the unwinding roller in a winding mode, a winding roller is installed in the leading-out frame, and the winding roller is connected to the winding roller in a winding mode. The adjusting mechanism comprises a fixed seat and a folding plate, an adjusting screw rod is installed on the fixed seat through a bearing, a threaded sleeve is arranged on the outer wall of the adjusting screw rod, and the folding plate is composed of a first side plate and a second side plate; the bottom end of the first side plate and the bottom end of the second side plate are movably connected to the outer walls of one sides of the two threaded sleeves correspondingly. The cast film folding machine provided by the utility model has the technical effects that the adaptability is high, and meanwhile, the cast film body can be folded more smoothly.

1. The name of the design product: graphical user interface of automatic control system of electronic equipment (casting machine 10). 2. The use of the design product: an electronic device. 3. The design points of the design product: in the graphical user interface. 4. The picture or photo that best indicates the design points: interface change state diagram. 5. The graphical user interface is protected by the design, and the rear view, left view, right view, top view and bottom view are omitted. 6. The use of the graphical user interface: for displaying the working state of the casting machine. 7. The human-computer interaction mode of the graphical user interface: clicking or touching the icon or function button on the screen. 8. The change state of the graphical user interface: after starting, enter the main view interface, click or touch the seventh icon on the left side of the main view interface, enter the interface change state diagram.

The utility model discloses a cast film winding device, relates to the technical field of automatic winding, and aims to solve the problems that the existing cast film winding device in the background technology needs to be laid at the front end, and the efficiency cannot be stably guaranteed. Rotating shafts are arranged at the upper ends of the interiors of the two long vertical supports on each side and the upper ends of the interiors of the two vertical supports on each side, a large roller is arranged outside the portion, between the two long vertical supports on the two sides, of the rotating shafts, a large roller groove is formed in the outer end face of the large roller, and two assembly rotating shafts are arranged in the large roller groove; assembly rollers are arranged outside the two assembly rotating shafts, rotating gears are arranged on the two sides of each assembly rotating shaft, a supporting column is fixed to one side of the interior of the large roller groove, a plurality of springs are connected to the lower end of the supporting column in an array mode in the direction of the assembly rotating shafts, and the other ends of the springs are jointly connected with a movable limiting plate; a plurality of moving guide rails are arranged in the large roller groove in the direction of the rotating shaft of the assembly in an array mode.

The utility model provides an off-line recovery device for a casting film, which relates to the technical field of film recovery devices, and comprises a frame body, compression rollers for compressing the film, a contraction piece and a cutting piece, every two compression rollers are rotationally arranged on the frame body in a group, the contraction piece is arranged on the frame body and guides the film to be gathered between one group of compression rollers, and the cutting piece is arranged on the frame body. Each group of compression rollers is used for guiding the compressed film to the cutting piece for cutting; according to the utility model, the width of the thin film is gathered, the width of the thin film is reduced, and the width of the thin film is superposed on the thickness in a gathering manner, so that the width of the thin film rim charge is changed, and the thin film rim charge enters the recovery device to be cut and segmented, and the application range of the recovery device is enlarged; and the width of the rim charge which can be cut off at a time when the film is cut is further increased, so that the cutting range of the film is increased.

The application discloses a method for improving the lamination bubble of MLCC, comprising the following steps: mixing porcelain powder, organic solution, dispersing agent, adhesive and other auxiliary agents in a certain proportion to prepare porcelain slurry required for subsequent preparation; performing electrode printing after the casting operation of the porcelain slurry is completed; performing stacking after the film is peeled off, and forming a bubble discharge channel in the lamination process; performing uniform pressing on the film after the above operation is completed; and cutting each group of films to obtain the finished product; the method changes the morphology structure of the cast film by adjusting the ingredient process parameters and the formula, and forms the bubble discharge channel in the lamination process. Thus, the occurrence of the lamination bubble is inhibited, and in the packaging and uniform pressing process, the residual micro-bubbles can be effectively discharged from the bar block before the bar block is softened and pressed again, so that the layers of the bar block are fully pressed together, and the bar block delamination or cutting delamination caused by the local gas aggregation and residual is avoided.

The invention relates to the technical field of plastic processing, in particular to a pretreatment device for rheological master batches for a multi-layer co-extrusion PE cast film, and provides the pretreatment device for the rheological master batches for the multi-layer co-extrusion PE cast film, which comprises a mounting frame, a dispersing box is arranged at the top of the mounting frame, and a plurality of flow guide plates are arranged on the dispersing box; the middle and two sides of the bottom of the dispersing box are respectively provided with a material collecting hopper for discharging materials; and the crushing assembly for uniformly crushing the plastic particles is arranged at the top of the dispersing box. Plastic particles smashed by the smashing assembly are screened through the screen plate, meanwhile, the reciprocating assembly drives the pushing mechanism to push the particles in an oriented mode, the particles with the particle size exceeding the standard are pushed to discharging openings in the two sides of the screen plate and enter material collecting hoppers on the two sides of the dispersing box, and therefore the overlarge particles are accurately removed and prevented from entering the subsequent hot melting procedure; the hot melting speed reduction caused by long heating time is avoided, the energy consumption of the hot melting device is finally reduced, the hot melting process is optimized, and the overall effect and the product quality are improved.

The invention provides an aromatic polyamide porous membrane as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing aromatic polyamide and a solvent to obtain a membrane casting solution; performing membrane forming treatment on the membrane casting solution to obtain a liquid membrane; the surface of the liquid film is placed in a water mist environment to be treated, and a wet film is obtained; and carrying out solvent replacement and drying on the wet membrane to obtain the aromatic polyamide porous membrane. Through the design of water mist induced phase separation and the combination and mutual cooperation of the water mist induced phase separation and specific process steps, the aromatic polyamide porous membrane with excellent performance can be simply, efficiently and quickly obtained, and the aromatic polyamide porous membrane has the advantages of large porosity and high ionic conductivity, is good in electrolyte wettability, has excellent mechanical properties and thermal stability, and is suitable for industrial production. And the performance requirements of the secondary battery diaphragm can be fully met. The preparation method is simple and environment-friendly in process, the membrane preparation process is easy to adjust, the membrane structure is easy to control, and the preparation method is suitable for large-scale industrial production.

This invention discloses an anaerobic biodegradable masterbatch for cast film of sanitary materials, characterized in that its main components, by mass percentage, include: 0.5-3% cypermethrin, 3-6% copper sulfate, 0.1-0.5% metal inorganic salt coating agent, 1-4% ammonium molybdate, 5-10% PLA, 5-10% nano starch, 1-5% carbamide, 7-12% fumed silica, and the balance being a biodegradable resin carrier. The preparation method includes dispersion treatment, centering treatment, structuring treatment, carrier implantation, and plasticizing granulation. The invention also discloses an anaerobic biodegradable cast film for sanitary materials, comprising the following components by mass percentage: 83.4%-97.13% PE-based cast film substrate for sanitary materials, 1-5% PE wax, 1-7.5% degradation masterbatch, 0.15-0.3% dispersant, 0.02-0.2% antioxidant, 0.2-0.6% white oil, 0.5-3% PE grafted maleic anhydride, and 0.2-2% stabilizer. The manufacturing method includes: material preparation, calcium carbonate pretreatment, melting, filtration, and casting. This invention achieves complete anaerobic biodegradation of PE cast leak-proof and breathable films, and also has antibacterial properties during normal use, making it suitable as a breathable film and base film for disposable sanitary materials.

The invention provides a preparation method of an electromagnetic shielding film material with a photochromic effect, which comprises the following steps: adding a mixed solution obtained by mixing phosphotungstic acid particles and tetrahydrofuran into a polymethyl methacrylate dissolving solution, and magnetically stirring to obtain a P-PW12 mixed solution; the silver nanowire dispersions are diluted to different concentrations in an ethanol solution to form a plurality of silver nanowire suspensions, and the concentration range of the different concentrations is 1 mg / mL-5 mg / mL; pouring the P-PW12 mixed solution into a culture dish to obtain a cast film; a part of the cast film is cut into a plurality of parts, each part is correspondingly sprayed with the silver nanowire suspension liquid with one concentration, a P-PW12 / AgNWs-x composite film is obtained, and x corresponds to the concentration of AgNWs; and respectively forming upper and lower substrates on the other parts, respectively arranging the upper and lower substrates on the two sides of each P-PW12 / AgNWs-x composite film, and carrying out hot pressing to obtain the P-PW12 / AgNWs / P-PW12-x composite film containing different AgNWs concentrations.

The utility model discloses an air knife structure for a cast film machine and the cast film machine, and relates to the technical field of air knife structures, the air knife structure comprises an air inlet cylinder, the air inlet cylinder is provided with an air inlet and an air outlet; two fixing plates are hinged to the air inlet cylinder, the bottom ends of the two fixing plates are connected with a fan-shaped air knife through detachable connecting pieces, a plurality of air outlet holes are formed in the fan-shaped air knife, the fan-shaped air knife is connected with an air flow divider, and a plurality of air holes are formed in the air flow divider; the two ends of the two fixing plates are both connected with wind shielding cloth. The air knife is arranged to be of the fan-shaped structure, the air flow covering area is increased, the cast film cooling and shaping time is shortened, the cast film production efficiency is improved, meanwhile, the fan-shaped air knife is connected to the two fixing plates through the detachable connecting pieces, and the fan-shaped air knife can be replaced according to actual needs.