210 results about "Pet substrate" patented technology

The invention discloses a transparent radiation refrigeration film and radiation refrigeration ceramic for building heat management and a preparation method of the transparent radiation refrigeration film and the radiation refrigeration ceramic. According to the film and the ceramic, SiO2 nano-particles are selected as base materials for achieving radiation refrigeration, dendritic silicon oxide nano-particles are adopted as inorganic particle emission materials of the film, PDMS is adopted as a polymer matrix, ITO coating PET is adopted as a flexible substrate, DMSNs are dispersed in PDMS, and the film is formed on the ITO-PET substrate through a blade coating technology. The white or colored ceramic takes spherical SiO2 nano-particles as a radiation refrigeration material and is sintered into white SiO2 porous ceramic, namely white radiation refrigeration ceramic, through phase inversion, and then the white radiation refrigeration ceramic is colored through chemical dye to form the colored ceramic. The radiation refrigeration film is good in transparency and bright in ceramic color, both the radiation refrigeration film and the ceramic have excellent radiation refrigeration performance, the transparent film can achieve the indoor cooling effect of about 12 DEG C on sunny days, and the colored ceramic can achieve the cooling effect of about 5 DEG C on sunny days.

The present invention relates to the technical field of modification of lithium battery current collector materials, and provides a coating material and a preparation method for preventing PET film degradation. The coating material is a film-forming substance made of vinyl pyrrolidone / methyl acrylate / fluorinated ethylene copolymer and a graphene nanosheet as a filler. The main component of the film-forming substance is a polyvinyl pyrrolidone segment, and the relative content of the methyl acrylate segment and the fluorinated ethylene segment is small. In addition, the vinyl pyrrolidone / methyl acrylate / fluorinated ethylene copolymer forms a three-dimensional network structure through cross-linking, and the graphene nanosheet forms a chemical connection with the polymer network through a surface active group. The coating can effectively prevent the lithium battery electrolyte and the catalyst alkoxy lithium from contacting with the PET substrate, thereby preventing the PET substrate from degrading.

The present invention relates to the technical field of tackified adhesive films and specifically to a tackified adhesive film. The tackified adhesive film comprises a substrate layer and a UV-tackified adhesive layer applied onto the substrate layer. The UV-tackified adhesive layer is prepared by using a modified polyester resin, which is obtained by the graft polymerization of a hydroxyl-terminated polyester resin, butyl methacrylate, and isocyanatoethyl methacrylate, as a main resin and mixing the main resin with a tackifying resin, a photo-curing agent and the like. The UV-tackified adhesive layer has relatively high cohesive strength and relatively good adhesion to a PET substrate. Before a UV-induced tackification reaction, an initial peel force is not significantly increased with the extension of standing time, so that an adhesive tape can be easily removed without causing damage and contamination such as residual adhesive to an adherend . After the UV-induced tackification reaction, the modified polyester resin can improve the bonding strength between the adhesive tape and the adherend.

The invention relates to an automobile scratch-resistant protective film and a preparation method thereof, and belongs to the technical field of automobile protective materials. The material is prepared from modified nano aluminum oxide, modified polyurethane acrylate, polyurethane acrylate, a photoinitiator, a flatting agent, an antioxidant and a solvent, the modified nano aluminum oxide is prepared through an esterification reaction of nano alpha-Al2O3 and stearic acid, and the hardness and wear resistance of a coating are enhanced; and the modified polyurethane acrylate is prepared by reacting a polyurethane prepolymer with a hydroxyl compound, so that the interface bonding force with the nano particles and the flexibility of the coating are improved. The preparation method comprises the following steps: dispersing modified nano aluminum oxide into a solvent, sequentially adding other components, and uniformly mixing to obtain functional coating slurry; the surface of a PET base material is coated with the slurry, and ultraviolet curing molding is performed after pre-drying. The prepared protective material has the characteristics of high hardness, scratch resistance, strong adhesive force with automobile paint and excellent weather resistance, and is suitable for automobile surface protection.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to an organic silicon pressure-sensitive adhesive attached to silicon rubber as well as a preparation method and application of the organic silicon pressure-sensitive adhesive. The organic silicon pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 300 parts of vinyl-terminated polydimethylsiloxane, 300 to 500 parts of a reaction product B of hydroxyl-terminated polydimethylsiloxane and boron-containing MTQ silicon resin, 3 parts of a cross-linking agent, 450 parts of MQ silicon resin, 2 parts of an inhibitor, 8 parts of a catalyst and 1500 parts of a solvent. The organic silicon pressure-sensitive adhesive disclosed by the invention is coated on a PET (Polyethylene Terephthalate) base material and is adhered to silicon rubber at normal temperature after being cured, so that cohesive failure of the silicon rubber can be achieved, and the technical problems of insufficient adhesive force, poor heat resistance and the like when the traditional organic silicon pressure-sensitive adhesive is adhered to the silicon rubber are solved.

The invention relates to the technical field of peep-proof film manufacturing, and discloses a high-light-transmittance peep-proof layer for a peep-proof film and a preparation method of the high-light-transmittance peep-proof layer. The preparation method comprises the following steps: carrying out plasma treatment on a PET substrate; preparing amphiphilic block copolymer-carbon nanotube composite sol, and coating the amphiphilic block copolymer-carbon nanotube composite sol on the surface of a PET substrate to form a peep-proof structure layer; preparing titanium dioxide sol, mixing the titanium dioxide sol with UV resin, and coating the surface of the peep-proof structure layer with the mixture to form a high-refractive-index layer; and mixing diamond nanoparticles with UV-cured polyurethane acrylate, and coating the mixture on the surface of the high-refractive-index layer to obtain the high-light-transmittance peep-proof layer. Through the nanometer self-assembly technology and the dieless forming technology, the limitation of dependence of a traditional peep-proof layer preparation mold and a multi-layer complex technology is broken through, and the production cost is reduced and the environmental protection property is improved while the light transmittance and the wear resistance are improved.

The utility model discloses a release film with low stripping force. The release film consists of a PET (Polyethylene Terephthalate) base material, a molybdenum disulfide layer deposited on the surface of the PET base material and a self-repairing coating coated on the outer side of the molybdenum disulfide layer. The utility model further provides a preparation system for the low-stripping-force release film. The preparation system comprises an ultrasonic cleaning machine, a drying machine, a chemical vapor deposition reactor, a mixing machine, a spin-coating machine, a drying box and a curing oven, an outlet of the ultrasonic cleaning machine is connected with the drying machine, an outlet of the drying machine is connected with the chemical vapor deposition reactor, an outlet of the chemical vapor deposition reactor is connected with the spin coater, an outlet of the mixing machine is also connected with the spin coater, an outlet of the spin coater is connected with the drying box, and an outlet of the drying box is connected with the curing oven. Through the combined design of the multi-layer structure of the molybdenum disulfide layer and the self-repairing coating, the release film is easy to strip, adhesion residues are reduced, and the use experience of a product is improved.

The invention provides a high-wear-resistance PET modified material and a preparation method thereof. The high-wear-resistance PET modified material comprises the following components in parts by weight: 80-90 parts of a PET base material, 5-10 parts of a wear-resistant reinforcing agent, 5-8 parts of a compatilizer, 2-5 parts of a lubricant, 1-2 parts of a nucleating agent, 2-3 parts of nano filler, 3-5 parts of a modified polymer, 2-3 parts of a toughening agent, 1-2 parts of a flame retardant, 0.5-1 part of an antibacterial agent and 0.5-1 part of an antistatic agent. According to the invention, by adding the wear-resistant reinforcing agent, the wear resistance of the PET base material is improved, so that the material can maintain a long service life under the action of external force such as friction and wear, and the risk of performance reduction or failure caused by wear is reduced; and the material has the advantages in application scenes needing to bear high-frequency friction and wear. By adding the modified polymer and the toughening agent, the toughness of the material is further improved on the basis of keeping the original strength of the PET base material, so that the material can better absorb and disperse energy when being impacted by external force, and the risk of brittle fracture is reduced.

The invention discloses a polarization-sensitive narrow-band solar blind self-driven photoelectric detector and a preparation method thereof, and belongs to the technical field of semiconductor photoelectric devices. The detector comprises an n-type conductive single Ga2O3 micron wire, a p-type conductive GaN substrate, a PET substrate and a two-dimensional graphene film. According to the device, Ni / Au alloy is selected as a positive electrode, and a two-dimensional graphene film is used as a transparent window of ultraviolet solar blind light and a negative electrode of the device. By means of built-in potential formed by the n-Ga2O3 / p-GaN heterojunction and a Schottky barrier of Ga2O3 / Graphene, high-sensitivity detection of solar-blind ultraviolet light under the self-driving condition is achieved. The device has relatively high responsivity, specific detection rate and external quantum efficiency. The preparation method comprises the following steps: cleaning the GaN substrate, evaporating the Ni / Au electrode, adhering the PET substrate with the channel, transferring the Ga2O3 micron wire to form the heterojunction, and transferring and curing the graphene electrode. The device has the characteristics of polarization sensitivity and low power consumption, and can be applied to the fields of ultraviolet solar blind band encryption communication and environment monitoring.

The invention relates to a flame-retardant PET (Polyethylene Terephthalate) sheet as well as a preparation method and application thereof, and belongs to the technical field of PET sheets, the method comprises the following steps: carrying out condensation reaction on phytic acid and a siloxane prepolymer under an acidic condition to generate a phosphorus-containing siloxane compound; the preparation method comprises the following steps: dispersing nano cellulose into a phosphate solution for ultrasonic treatment, and grafting a phosphate group; the preparation method comprises the following steps: preheating a furan-maleimide type cross-linking agent at 100-120 DEG C for 10-20 minutes; the preparation method comprises the following steps: mixing a PET base material, a phosphorus-silicon flame retardant, modified nano cellulose, a dynamic cross-linking agent and polytetrafluoroethylene micro powder, and granulating at 220-260 DEG C by a double-screw extruder; and finally, carrying out sheet forming on the granules through a calender to realize the preparation of the flame-retardant PET sheet.

The invention relates to the technical field of release films, in particular to a PET base material double-sided release film with a matte effect and a preparation method thereof.The preparation method comprises the steps that after a PET base material is subjected to double-sided corona treatment, pure water cleaning and hot air drying pretreatment, under nitrogen protection, copolymer resin and a cross-linking agent are mixed at a low speed, and the PET base material double-sided release film with the matte effect is obtained; and then dispersing with a delustering agent and a dispersing agent at a high speed to prepare a matte release coating, carrying out double-sided coating, gradient curing and constant-temperature curing, and then slitting and rolling to prepare the matte PET double-sided release film. The surface of the prepared PET base material is provided with a rigid framework and a hydrophobic microphase separated matte release layer, low glossiness, stable release force and high residual adhesion rate are achieved, meanwhile, the coating is endowed with high temperature resistance, deformation resistance and damp-heat aging resistance, the use amount of a delustering agent is remarkably reduced, and agglomeration failure is avoided.

The invention discloses a three-dimensional force flexible tactile sensor and a preparation method thereof, the three-dimensional force flexible tactile sensor comprises a layered structure, a top electrode layer and a bottom electrode layer, the top electrode layer comprises a second PET substrate and a top copper electrode, the top copper electrode is installed below the second PET substrate, the top copper electrode is a square common electrode, a copper film with the thickness of 0.006 mm is adopted, the side length is 20 mm, and the thickness of the top copper electrode is 20 mm; the top copper electrode is connected with an external lead through a conductive adhesive; the elastic dielectric layer is located below the top electrode layer and is made of an Ecoflex00-30 material, the elastic dielectric layer comprises micro circular truncated cone structures arranged in an array mode, the height of each micro circular truncated cone is 0.9 mm, and the interval between every two micro circular truncated cones is 1 mm; and the bottom electrode layer comprises a first PET substrate and a bottom copper electrode. The sensor has the advantages of high sensitivity, wide temperature range stability, lightness, thinness, easiness in integration and three-dimensional force synchronous decoupling, and is simple in preparation process and low in cost.

The invention relates to the field of enzyme engineering, and provides a BhrPETase variant capable of improving stability through site-specific replacement under the background of Bhr6M (SEQ ID NO: 1) and application of the BhrPETase variant, and the replacement is M57I and / or S184H, preferably double mutation M57I / S184H. The variant shows remarkable thermal stability and storage stability under a unified measurement caliber: the condition t1 / 2 at 90 DEG C is greater than or equal to 400 minutes, the condition t1 / 2 at 70 DEG C is greater than or equal to 7 days, and the residual activity after 30 days of storage at 30 DEG C is greater than or equal to 90%. The invention also discloses a nucleic acid encoding the variant, a vector, a recombinant host, an enzyme preparation, and a method for depolymerizing PET and a copolymer thereof in a process temperature range of 70-90 DEG C. Compared with a control Bhr6M, the variant maintains more lasting activity in high-temperature and long-period operation, is suitable for PET substrates with different forms and crystallinity, reduces the enzyme supplementing frequency and improves the stability of a device.

The invention provides a PET enhanced PE foam composite material which comprises a PE foam base material layer, a bonding layer and a PET base material layer, the bonding layer is located between the PE foam base material layer and the PET base material layer, the PE foam base material layer is made of PE foam with the density being 0.05-0.3 g / cm < 3 > and the average cell diameter being 50-200 microns, the bonding layer is made of an acrylate adhesive with the thickness being 0.01-0.05 mm, and the PET base material layer is made of a PET adhesive with the thickness being 0.01-0.05 mm. The PET base material layer adopts a transparent PET film original film with the thickness of 0.01-0.1 mm, the prepared foam composite material has excellent mechanical properties, excellent structural stability and multifunctional integration, the adopted preparation method is simple in process, controllable in operation, clear in parameters of each step and suitable for large-scale industrial production, and by accurately controlling the process parameters, the foam composite material can be used for preparing a foam composite material with good mechanical properties. And the composite material with excellent performance can be stably produced.

The utility model relates to the technical field of printed label stickers, in particular to a flame-retardant printed label sticker which comprises a label sticker body, and the label sticker body is composed of a bottom paper coating, a bottom paper layer, an adhesive layer, a thermosensitive layer, a transparent PET base material layer, a printing layer, a flame-retardant layer, an anti-ultraviolet agent layer and a surface laminating layer. The utility model has the advantages that the sticker is guaranteed to be sufficiently supported, and meanwhile, the sticker is prevented from discoloring or fading under the irradiation of sunlight, so that the quality of the sticker is not influenced.

The present application discloses an anti-blue light OCA optical composition for screen and a preparation method thereof, comprising an OCA adhesive body. The OCA adhesive body comprises a first release film, an OCA hybrid blue light barrier film, an optical PET substrate, a silicone film, and a second release film. The first release film comprises the following components by weight: 25-35 parts of nano cobalt oxide.

This invention belongs to the field of optical film technology, specifically high-definition optical composite coating films and their preparation methods. This invention aims to solve the problem that existing optical composite films cannot simultaneously achieve both optical enhancement and viewing angle. This invention involves mixing a nano-conductive polymer, a silicone additive, and a diffusion liquid to obtain a diffusion layer coating liquid; dispersing PMMA-PS microspheres in the diffusion layer coating liquid to obtain a composite coating liquid; mixing a prism layer resin and nano-silica to obtain a prism layer coating liquid; coating the back of a PET substrate with the composite coating liquid and passing it through a microlens array to obtain a diffusion layer; coating the front of the substrate with the prism layer coating liquid to obtain a prism layer; and finally, after curing, attaching a PE protective film to one side of the prism layer to obtain the composite coating film product. The composite coating film prepared by this invention has excellent optical enhancement, a good viewing angle, and effectively suppresses moiré patterns.

The invention provides a low-temperature heat-sealing barrier PET coating film and a manufacturing method thereof. The low-temperature heat-sealing barrier PET coating film comprises a PET base material film and a low-temperature heat-sealing barrier coating coated on the PET base material film, the low-temperature heat-sealing barrier coating is prepared from the following raw materials in percentage by mass: 15 to 20 percent of ethylene acrylic acid copolymer, 10 to 15 percent of polyvinyl alcohol, 0.2 to 0.5 percent of polycarbodiimide, 1 to 2 percent of adhesion promoter, 1 to 3 percent of cosolvent, 1 to 3 percent of nonionic emulsifier, 0.05 to 0.1 percent of defoaming agent and 60 to 75 percent of deionized water. The PET coating film is simple in structure, heat sealing performance can be provided without compounding, the sealing starting temperature is low, and meanwhile the barrier property meets the food packaging requirement.

The invention belongs to the technical field of variable optical films, discloses a multifunctional composite variable optical film and a preparation method thereof, and aims at solving the problems that an existing variable optical film is single in function, unstable in optical performance, poor in flexibility and bending resistance and low in process precision. The preparation method comprises the following steps: pre-treating the base material: sequentially carrying out plasma cleaning on the PET base material and sputtering the ITO conductive layer, sequentially carrying out ultrasonic cleaning on the glass substrate and preparing the YAG powder enhancement layer; the coating of the functional layer is that the surface of the ITO layer of the PET-ITO composite base material is coated with a PDLC layer and an electrochromic layer, and the surface of the YAG layer of the YAG-glass composite base material is coated with a temperature-sensitive layer; the compounding and curing are as follows: firstly laminating after aligning and compounding, and then carrying out UV segmented curing. The light transmittance of the product can be adjusted by 5-95% in an electric field, and the infrared reflectivity is gt; and after the ITO layer is bent for 1000 times and the bending radius is 5mm, the resistance change rate is less than or equal to 10%, so that the ITO film is suitable for a sunshade film for a vehicle and an intelligent window of a building.

The invention discloses a preparation method of a dry film, and belongs to the technical field of medical films. The technical problems that in the prior art, a coloring agent adopted by a dry film is poor in color changing effect, and an adopted latex solution adhesive is poor in film forming property are solved. The preparation method of the dry film comprises the following steps: coating a PET (Polyethylene Terephthalate) base material with a modified SBR (Styrene Butadiene Rubber) latex solution to form a coating; the coating is coated with a photosensitive layer material to form a combined structure; drying and curing the combined structure, and laminating a polyurethane film to prepare a dry film; and the photosensitive layer material comprises thermosensitive dye microcapsules, a color developing agent and the like. According to the thermosensitive dye microcapsule, an intermediate A and 6, 7-dihydroxy-3-[(Z)-1-hydroxy-3-ketobutyl-1-alkenyl]-4-oxo-2, 3-dihydrochromene-5-carboxylic acid are subjected to a reaction, and a colored dye is synthesized; the prepared dry film has the advantages of being good in color changing effect, good in thermal performance and low in haze degree.

The invention belongs to the technical field of high polymer materials, and discloses a PET film with hot melt adhesives on two sides and a preparation method thereof.The PET film with the hot melt adhesives on the two sides comprises a PET base material, the two sides of the PET base material are coated with adhesive force layers, the outer sides of the adhesive force layers are coated with composite modified EVA adhesive layers, the adhesive force layers are made of water-based acrylate modified polyurethane emulsion, and the water-based acrylate modified polyurethane emulsion is coated with the hot melt adhesives on the two sides. The modified EVA adhesive layer is prepared from the following raw materials: EVA resin, EMA resin, petroleum resin, MAH-g-EVA, microcrystalline wax, zinc borate-organic silicon hybrid capsules, a dopamine derivative-graphene quantum dot compound and an antioxidant. According to the PET film adhesive force layer with the hot melt adhesive on the two sides, the adhesive force of the modified EVA adhesive layer to a PET layer base material under the conditions of high temperature, low temperature, high humidity and the like can be guaranteed, and the modified EVA adhesive layer has good adhesive performance and aging resistance through blending modification and addition of a modification additive.

This invention discloses a fully automated screen printing method for labels based on CCD visual alignment, specifically including the following steps: material feeding control, substrate pretreatment, CCD visual alignment, dual CCD compensation printing, continuous alignment and overprinting, low-temperature curing, cooling, shaping and leveling, CCD visual final inspection, slitting and rewinding, and packaging output. This fully automated screen printing method for labels based on CCD visual alignment achieves precise alignment and real-time offset compensation between the screen and the substrate through dual CCD visual monitoring, improving overprinting accuracy. It employs ambient pressure low-temperature plasma pretreatment to enhance substrate adhesion, and three-stage low-temperature curing to prevent PET substrate deformation. Combined with full-width CCD final inspection to automatically remove defective products, this method achieves fully automated, high-precision, and high-stability label printing production, offering advantages such as precise alignment, uniform curing, strict quality control, and high production efficiency.

The utility model discloses a plastic packaging film with good waterproof and moistureproof performance, which has the advantages of good waterproof and moistureproof performance, corrosion resistance, aging resistance and high transparency, and comprises a PET (polyethylene terephthalate) base material, and the upper surface of the PET base material is sequentially provided with a first waterproof layer, a drying layer, a moistureproof layer, an anti-reflection layer, a wear-resistant layer, a hydrophobic layer and a dustproof film. And a second waterproof layer and an adhesive layer are sequentially arranged on the lower surface of the PET base material.

The invention discloses a double-layer PET composite material for a photovoltaic front plate, a preparation method, a product and application, and belongs to the technical field of PET materials. The technical problem to be solved is to obtain the double-layer PET composite material for the photovoltaic front panel, wherein the initial peel strength of the double-layer PET composite material is greater than or equal to 10N / cm, the strength attenuation rate of the double-layer PET composite material is less than 22.86% after the double-layer PET composite material is subjected to 85 DEG C / 85% RH damp-heat aging for 1000h, and the light transmittance aging attenuation rate of the double-layer PET composite material is less than 2.9%. According to the invention, the PET substrate is modified by adopting a mode of grafting the carboxyl-containing monomer on the surface of the plasma, and a specific adhesive formula is selected, so that the interlayer stripping force and the weather-proof effect of the PET are improved, and the problems that the aging attenuation of the stripping force between two layers of PET is fast, and the weather-proof property is poor are solved.

The present invention relates to the field of packaging materials, and particularly to a composite material for food packaging that can be sustainably utilized and its preparation process. The process includes the following steps: preparation of a high-barrier coating for oxygen and moisture; preparation of a high-strength film material solution; surface treatment and film layer coating of a PET substrate. Through the synergistic effect of rice bran wax and cinnamaldehyde, the hydrophilicity of polyvinyl alcohol is inhibited and a dense film structure is formed, enhancing the mechanical strength of the film layer and its barrier properties against moisture and oxygen. Moreover, cinnamyl alcohol can also provide good antioxidant and antibacterial properties for the film layer, and ZnO can be embedded in the coating structure to fill micropores and defects, improving the denseness and mechanical strength of the film layer. In summary, the barrier ability of the composite material for food packaging that can be sustainably utilized against oxygen and moisture is significantly improved, and it has good antibacterial and antioxidant properties.

The invention discloses optical film transfer printing glue applied to a grating structure. The invention discloses a water-based adhesive which is composed of the following components: 3%-16% of epoxy modified resin, 6%-12% of polyurethane resin, 4%-18% of organosilicone acrylic resin, 4%-18% of polycarbonate resin, 13%-18% of (2) propylene oxide neopentyl glycol diacrylate, 8%-16% of 10 (ethyoxyl) bisphenol a dimethylacrylic acid, 4%-8% of 30 (ethyoxyl) bisphenol a acrylic acid, 12% of o-phenyl phenoxyethyl acrylate and 4% of an initiator. 6% of a reaction type demoulding auxiliary agent and 0.1-5% of a defoaming agent. The formula of the UV transfer printing glue is optimized, so that the prepared optical film transfer printing glue can be well demoulded without residual glue and is peep-proof film transfer printing glue suitable for deep structures without residual glue, the film surface is free of wiredrawing lines and fine, and the adhesive force to a PET (Polyethylene Terephthalate) base material is good.

This invention relates to the field of thin film preparation, and discloses a method and system for preparing dimming films based on PET and liquid crystal. The method includes: first, acquiring the transmittance parameters of the PET substrate and the phase transition temperature data of the liquid crystal material; constructing an interlayer framework; forming an activated interface layer on the surface of the PET-liquid crystal composite through plasma treatment; coating a liquid crystal dispersion to obtain a pre-cured film; gradient curing based on its thickness distribution data using an ultraviolet light source to form a dimming functional layer; collecting the transmission spectrum curves of the dimming functional layer under different electric field intensities; calculating the duty cycle value of the liquid crystal molecules; configuring a transparent conductive electrode pattern accordingly; and topologically designing it as a uniquely controlled electrode array. Defect clusters are identified and repaired by calculating the electronic control adjustment value; the dimming attenuation parameters of the repaired film are analyzed; and finally, a PET-liquid crystal composite thin film preparation scheme is formulated. This invention can improve the preparation efficiency of dimming films.

The invention provides a high-temperature-resistant PI / PET composite release film with a gradient structure and a preparation method thereof.The composite release film is composed of a PET base material and a PI composite reinforcing layer, the PI composite reinforcing layer is prepared through electrostatic spinning, and the porosity and the aperture of an electrostatic spinning layer in the PI composite reinforcing layer are gradually increased in the thickness direction of the release film. The PI composite enhancement layer in the release film has an efficient heat-conducting gradient structure, so that the temperature resistance of the PET release film is improved.

The invention discloses a cold stamping foil and equipment for producing labels, and relates to the technical field of cold stamping foils, and the first theme comprises a coating, a metal plating layer, a transfer layer and a PET base material layer which are stacked in sequence; a silicone oil layer is arranged on the side, away from the transfer layer, of the PET base material layer and used for being bonded to the transfer layer. According to the embodiment of the invention, the silicone oil layer is arranged on the PET base material layer, after the UV cold ironing glue is cured, the PET base material layer and the silicone oil layer are peeled off from the transfer layer, then the PET base material layer and the silicone oil layer are turned over through the first material returning frame, so that the silicone oil layer is close to the transfer layer, and then the silicone oil layer is coated with the pressure-sensitive glue by means of the glue coating mechanism; and finally, the pressure-sensitive adhesive layer is compounded on the transfer layer through the second compounding mechanism, secondary utilization of the PET base material is achieved, the utilization rate of the cold-stamping foil is increased, and the problem that the utilization efficiency of the cold-stamping foil is low is solved on the whole.

The invention belongs to the technical field of electrochromic materials and polymer composite films, and particularly relates to PET (Polyethylene Terephthalate) for an electrochromic dimming film and a preparation method of the PET. The problem that stripping easily occurs in recycling due to insufficient adhesive force between a PET base material and a conductive layer is solved. The preparation method comprises the following steps: performing chemical activation and nanoscale physical roughening on a PET base material through ultraviolet-ozone synergistic treatment, and then coating a triblock copolymer interface layer; after the interface layer is annealed in a toluene steam atmosphere, a gradient interface layer with a vertical phase separation structure can be formed, and PGMA blocks are enriched on the surface; and a firm covalent bond connection and interpenetrating network structure is formed at an interface by reacting with a material coated with an amino-containing functional group and carrying out thermocuring.