2223 results about "Release liner" patented technology

The invention relates to the technical field of folding screen supporting films, and particularly discloses a double-layer buffering supporting film for a flexible folding display screen and a preparation method of the double-layer buffering supporting film. The double-layer buffer supporting film for the flexible folding display screen sequentially comprises a release film layer, a first adhesive layer, a first stainless steel layer, a second adhesive layer, a second stainless steel layer and a protective film layer from top to bottom, the first adhesive layer and the second adhesive layer are prepared by curing the same pressure-sensitive adhesive composition; the pressure-sensitive adhesive composition is prepared from the following raw materials: acrylate copolymer, hydrogenated rosin glyceride, hyperbranched polyesteramide-dopamine conjugate, acylhydrazone bond modified siloxane, a curing agent and a silane coupling agent; the protective film layer comprises the following raw materials: PET particles, nano silicon dioxide, an ethylene-vinyl acetate copolymer and an antioxidant. The double-layer buffer supporting film has the advantages of being high in supporting rigidity and interlayer peel strength, and serious folds caused by long-term repeated folding of the folding screen can be relieved.

Disclosed in the present invention are a PET release film base film having low surface roughness and a preparation method therefor. The release film base film comprises three layers which are stacked: a core layer and two surface layers located on both sides of the core layer. The release film base film is obtained via three-layer co-extrusion by means of taking an auxiliary extrusion resin as a raw material of the two surface layers and a primary extrusion resin as a raw material of the core layer; the auxiliary extrusion resin is obtained by mixing an anti-blocking agent PET masterbatch and a PET base material in a mass ratio of 1:5-1:15; and the primary extrusion resin is a pure PET base material. The release film base film of the present invention has low surface roughness, low haze and excellent overall performance. Since large-particle benzoic acid-modified nano aluminum oxide has the refractive index very close to that of PET base films, the present invention can effectively avoid adverse visual impacts caused by a difference in the refractive index at interfaces between nanoparticles having large particle diameters and resin matrixes, thus effectively reducing the haze.

The invention relates to an antistatic PET (Polyethylene Terephthalate) base film for preparing a polaroid release film and a preparation method thereof, the release film base film is prepared by taking an optical-grade PET slice as a main body, adding modified PET with a specific structure and a modified SiO2 filler, and carrying out co-extrusion casting, a unique three-section stretching process and coating with a coating liquid. According to the invention, material modification and process improvement are carried out, specifically, an optical-grade PET slice is taken as a main body material, modified PET and a modified SiO2 filler with a specific structure are added, a film is prepared through co-extrusion casting and a unique three-section stretching process, and then the surface of the film is coated with a layer of antistatic coating liquid, so that the antistatic film is obtained. The finally prepared base film has low alignment angle, low transverse hot shrinkage rate and high surface adhesion, keeps the characteristics of high light transmittance and low haze of an optical-grade polyester film, endows the film with certain antistatic property, and is particularly suitable for being used as a release film of a high-end polaroid.

The invention discloses a release film inside and outside stripping type three-dimensional printer which comprises a workbench and a material pump, a transmission mechanism is installed on the workbench, a printing platform is installed on the transmission mechanism, a liquid guide hole is formed in the printing platform, a release film of a material groove divides the material groove into an air bin and a material bin, the air bin is filled with air, and the material bin is filled with material. Photosensitive resin is contained in the stock bin, the material pump is used for introducing the photosensitive resin in the stock bin into the demolding hole of the model through the liquid guide hole, and the release film and the model form an internal and external bidirectional stripping mode in combination with the adjustment of the pressure of the gas bin. The invention further discloses a three-dimensional printing method. The photosensitive resin in the trough is injected into the demolding hole of the model through the material pump, so that the release film is separated from the model from the inner direction and the outer direction of the model, and the stripping speed and the printing speed of the release film are increased.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-temperature-resistant high-impedance pressure-sensitive adhesive, a supporting film and a preparation method of the supporting film. A styrene-butadiene-styrene block copolymer (SBS) is used as a main body material, an acrylic copolymer with high carboxyl content is grafted in a solvent in a thermal initiation mode, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained after the high-temperature-resistant and high-impedance pressure-sensitive adhesive is compounded with tackifying resin, a curing agent and an antioxidant, and after optical-grade PET is coated with the high-temperature-resistant and high-impedance pressure-sensitive adhesive, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained. According to the novel supporting film, the polarity of the SBS main body material is low, the excellent electrical insulation performance is provided, the supporting film body has the characteristic of high impedance, and therefore the requirement for high impedance of the supporting film in a copper bar friction experiment is met; in addition, after the acrylic copolymer with high carboxyl content is grafted, a large number of crosslinking points can be provided, and the overall crosslinking degree is greatly increased after thermocuring, so that the high-temperature modulus of the adhesive layer is improved, and the adhesive layer is endowed with the characteristic of high-temperature deformation resistance.

The present disclosure relates to a pulsing release module, a pulsing release resin tank, and a 3D printing device and printing method. The pulsing release module comprises a resin tank assembly, a support assembly and a pulse gas supply assembly, wherein the resin tank assembly is provided with a release film; the support assembly is arranged below the resin tank assembly, the support assembly is provided with a support member, and a first preset distance is provided between the support member and the release film in a height direction and is configured to form a gas cavity between the support member and the release film; a gas inlet and a gas outlet, which are in communication with the gas cavity, are provided in the support member; and the pulse gas supply assembly comprises a gas oscillation assembly and a gas conveying line, the gas oscillation assembly being arranged on the gas conveying line, and the gas conveying line being connected to the gas inlet.

The invention belongs to the technical field of film materials, and particularly relates to a lower supporting film for a flexible folding display screen and a preparation method of the lower supporting film. The supporting film sequentially comprises a protective film layer, a stainless steel base material layer, an adhesive layer and a release film layer from top to bottom; wherein the adhesive layer is prepared by coating a release film with modified organic silica gel liquid, drying and curing. The ultra-thin stainless steel is used as the base material layer, can resist external force impact and scraping, is low and stable in thermal expansion coefficient, can reduce the influence of environment temperature and humidity on the size of the supporting film, and guarantees the structural consistency of the screen module in long-term use; and through multi-component composite modification of polyurethane-thiazole-organic silicon, the peeling strength of the adhesive layer and stainless steel and the bending frequency of the supporting film are improved, and the service life of the supporting film is prolonged.

The invention discloses a power-on viscosity-reducing adhesive composition, a viscosity-reducing adhesive tape and a preparation method of the viscosity-reducing adhesive tape, and relates to the technical field of adhesive materials. The preparation method comprises the following steps: adding polyurethane acrylate and polybutylene adipate into a planetary stirring kettle, stirring, sequentially adding a PEDOT / PSS solution, a nano core-shell material, a dynamic cross-linking agent, hydrogenated rosin tackifying resin, TPU particles and butylated hydroxytoluene, stirring to obtain mixed glue, and carrying out vacuum defoaming to obtain the electrified viscosity-reducing glue composition. Coating a release film with the electrified viscosity-reducing adhesive composition, carrying out UV curing, and attaching the release film on the other side to obtain the electrified viscosity-reducing adhesive tape. The prepared electrified viscosity-reducing adhesive composition and viscosity-reducing adhesive tape have the advantages of being excellent in mechanical property, sensitive in response, remarkable in stripping force difference before and after electrification, stable at high temperature, stable in circulation, resistant to pollution and the like, nondestructive disassembly and reutilization of devices are achieved by regulating and controlling the adhesive force through an electric field, and the electrified viscosity-reducing adhesive composition and viscosity-reducing adhesive tape can be applied to an electric response assembly scene.

The invention discloses an optical-grade PET release film and a preparation method and application thereof, and belongs to the technical field of PET release liners.The preparation method comprises the steps that organic silicon resin, polyacrylate and functional silicone oil serve as raw materials, hexadecafluorophthalocyanine copper serves as a catalyst, sodium hydroxide provides hydroxyl anions, and hydroxyl-containing fluorinated hydroxyaniline is obtained; amino groups on the surface of fluorinated hydroxyaniline react with carboxyl groups of graphene oxide and are grafted on the surface of graphene oxide, then hydroxyl groups in the fluorinated hydroxyaniline and carboxyl groups of acrylic acid are subjected to esterification reaction under the action of a catalyst, so that acrylic acid is grafted on fluorinated modified graphene oxide, and the fluorinated modified graphene oxide is obtained. Therefore, hydroxyl and epoxy functional groups on the surface of the graphene oxide are consumed, hindering of electron transmission is reduced, the conductivity of the release film is improved, and the antistatic requirement of the release film is met.

The invention discloses a preparation method of a vehicle-mounted OCA optical adhesive, and belongs to the technical field of optical adhesive materials. The vehicle-mounted OCA optical adhesive comprises an optical light release film, an acrylic adhesive layer and an optical heavy release film which are sequentially arranged from top to bottom, the preparation method comprises the following steps: mixing and stirring an acrylic pressure-sensitive adhesive, 2-ethylhexyl acrylate, isobornyl acrylate, acryloylmorpholine, dodecyl ester, N-vinyl pyrrolidone, a bridging agent and a photoinitiator, filtering, and defoaming to obtain an acrylic adhesive; and coating a release film with the obtained acrylic adhesive, and irradiating the release film with a halogen lamp to obtain the vehicle-mounted OCA optical cement. The vehicle-mounted OCA optical adhesive prepared by the invention has better high-temperature-resistant and high-temperature-resistant and high-humidity-resistant effects, is simple in preparation process and is suitable for large-scale production.

The invention provides a printing anomaly detection method of 3D printing equipment, the 3D printing equipment and a storage medium, and relates to the field of 3D printing. The 3D printing equipment comprises a printing platform and a material groove, and the method comprises the steps that the printing platform is controlled to be lifted in the vertical direction so as to drive a model layer on the printing platform to be separated from a release film at the bottom of the material groove; in the lifting process of the printing platform, a detection value used for representing the stress condition of the printing platform is obtained; and according to the detection value, whether the 3D printing equipment has the abnormal condition of model printing failure or not is judged. According to the method, a user can conveniently and timely find the abnormity and take countermeasures according to the abnormity, the problem of printing failure or poor model quality caused by the abnormity is avoided, the production process is more efficient through real-time abnormity detection, the model manufacturing period is shortened, the rejection rate is reduced, manual intervention is not needed, and the production efficiency is improved. And the risk of human error judgment is reduced.

The invention relates to the technical field of protective films, and particularly discloses a composite glass protective paste for a flexible folding screen and a preparation method of the composite glass protective paste. The composite glass protection paste for the flexible folding screen sequentially comprises a functional base film, a first thermosetting polymer film, a UTG ultrathin glass layer, a second thermosetting polymer film and an OCA adhesive layer from top to bottom, the preparation method of the OCA adhesive layer comprises the following steps: carrying out activating treatment on nano silicon dioxide particles to obtain modified particles with cations on the surfaces; carrying out reaction on the modified particles and molten hydroxy acrylic resin under the ultrasonic action, and carrying out extrusion granulation to obtain elastic acrylic master batches; uniformly mixing the elastic acrylic master batch with a cross-linking agent and a photoinitiator to obtain the acrylic OCA; and coating OCA on one surface of the release film, and performing ultraviolet curing to obtain an OCA layer. According to the composite glass protection paste for the flexible folding screen, the bending resistance of the protection paste is improved.

The invention relates to the technical field of adhesive tapes, and particularly discloses a UV (ultraviolet) visbreaking anti-acid adhesive tape for thinning flexible glass and a preparation process of the UV visbreaking anti-acid adhesive tape. A UV viscosity-reducing acid-resistant adhesive tape for thinning flexible glass comprises a base material layer, a pressure-sensitive adhesive layer and a release film layer which are stacked in sequence, and the pressure-sensitive adhesive layer is prepared from the following raw materials: 85-120 parts by mass of an acrylate copolymer, 3-5 parts by mass of a cross-linking agent, 1.5-2.5 parts by mass of a photoinitiator, 2-5 parts by mass of an acid-resistant nano filler and 0.2-0.4 part by mass of an amine catalyst; the acrylate copolymer is prepared from the following raw materials in parts by mass: 20-30 parts of an imidazolinyl-containing monomer, 15-25 parts of a large-steric-hindrance alkyl-containing monomer, 45-55 parts of a flexible monomer and 5-10 parts of a carboxyl-containing monomer. The UV visbreaking acid-resistant agent prepared by the invention has relatively good acid resistance and reliable UV visbreaking and high initial bonding balance.

The 3D printer comprises a workbench and a resin pump, a printing platform is installed on a transmission mechanism located on the workbench, a liquid guide hole is formed in the printing platform, an inlet of the resin pump communicates with an inner cavity of a material groove, and an outlet of the resin pump communicates with the liquid guide hole; the model is bonded on the printing platform, a demolding hole is formed in the model, the upper end of the demolding hole is communicated with the liquid guide hole, and the demolding hole at least downwards penetrates through one curing layer; and after a curing layer penetrated by one demolding hole is completed, under the driving of a resin pump, the photosensitive resin in the material groove can be fed into the liquid guide hole, so that the release film is stripped from the curing layer from inside to outside along the edge of the lower end of the demolding hole. The invention further discloses a 3D printing method. The photosensitive resin in the trough is injected into the demolding hole in the model through the resin pump, so that the model can peel off the release film from the inner direction and the outer direction at the same time, and the peeling speed and the printing speed of the release film are increased.

The invention relates to a self-repairing invisible car cover and a preparation method thereof, and relates to the technical field of automobile material processing, and the self-repairing invisible car cover comprises the following components in parts by mass: 20-40 parts of fluorine-containing polyol, 15-30 parts of polyisocyanate, 5-10 parts of a composite chain extender, 10-20 parts of self-repairing microcapsules, 1-3 parts of an initiator and 30-50 parts of a solvent. The preparation method comprises the following steps: preparing a self-repairing coating; coating the surface of the transparent substrate with an adhesive to obtain an adhesive layer, and covering the adhesive layer with a release film to obtain a semi-finished automobile cover; and the self-repairing coating is applied to the face, away from the release film, of the semi-finished automobile cover, heating and curing are conducted, the semi-finished automobile cover with a self-repairing coating is obtained, the self-repairing coating is coated with a protective film, and the self-repairing invisible automobile cover is obtained after curing. The automobile cover has the effect of improving the self-repairing performance of the automobile cover, and the automobile cover has good weather resistance, tensile resistance and puncture resistance.

The invention discloses a polaroid for brightening sheet roll material compounding. The polaroid comprises a first release film, pressure-sensitive glue, a first cellulose triacetate layer, a polyvinyl alcohol layer, a second cellulose triacetate layer, a special functional layer and a second release film, the polyvinyl alcohol layer is positioned between the first cellulose triacetate layer and the second cellulose triacetate layer; the first release film covers the surface of one side of the first cellulose triacetate layer through pressure-sensitive glue; the special functional layer is coated on the surface of one side of the second cellulose triacetate layer, the second release film covers the special functional layer, and the special functional layer is prepared from an azobenzene side chain type liquid crystal polymer or a polymer stable liquid crystal material. According to the invention, the direct on-line roll-to-roll composite production of the polaroid roll material and the brightness enhancement film roll material is realized, additional manual slitting, splicing and material receiving procedures are not needed, and the product yield and the production efficiency are greatly improved.

The invention relates to the technical field of adhesive tapes, and discloses an electrolyte-resistant double-sided adhesive tape for an environment-friendly new energy lithium battery, the double-sided adhesive tape comprises a base film layer, adhesive film layers and release films, the adhesive film layers are distributed on two sides of the base film layer, the release films are distributed on two sides of the adhesive film layers, and the adhesive film layers are formed by coating electrolyte-resistant adhesives on two sides of the base film layer. The electrolyte-resistant adhesive is prepared by carrying out cross-linking polymerization on acrylic monomers such as methyl methacrylate and hydroxyethyl methylacrylate under the action of an initiator and a cross-linking agent, and the cross-linking agent is a macromolecular substance which is connected through a silicon-oxygen bond and has a cyclohexyl hexafluoropropane-tertiary butyl block alternating structure. After the special structure of the cross-linking agent is introduced into the molecular chain of the adhesive, the adhesive property, high temperature resistance and electrolyte resistance of the adhesive can be obviously enhanced.

The invention relates to the technical field of polymer waterproof coiled materials, in particular to a weather-resistant anticorrosive film material and a preparation method and application thereof. The weather-resistant anticorrosive film material comprises a functional layer, a self-adhesive layer and a release film layer, the functional layer comprises a weather-proof layer, a barrier layer and a matrix layer; the weather-proof layer comprises first matrix resin, a first polyolefin elastomer, an antioxidant, a light stabilizer, a self-cleaning filler, an acid acceptor and a color master batch; the blocking layer comprises second matrix resin, a second polyolefin elastomer, an ultraviolet blocking filler, an antioxidant and a light stabilizer; and the matrix layer comprises third matrix resin and a third polyolefin elastomer. The weather-resistant anti-corrosion film material obtained through the arrangement of a multi-layer structure has excellent weather resistance, self-cleaning property, ultraviolet barrier property and acid and alkali corrosion resistance, can protect the self-adhesive layer from being damaged by ultraviolet rays, acid and alkali corrosion and the like, and provides a new selectivity for anti-corrosion waterproof projects with long-term exposure use requirements, such as roof construction and maintenance.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a preparation method of a UV (ultraviolet) viscosity-reducing adhesive tape, which comprises the following steps: taking 100g of polymer, adding 10-80g of ethyl acetate, an isocyanate curing agent and a photoinitiator, then uniformly stirring, standing and defoaming to obtain an adhesive, uniformly coating a PET (polyethylene terephthalate) release film with the standing adhesive, putting into a drying oven to bake and dry, then attaching to a PO (polyolefin) base film, and drying to obtain the UV viscosity-reducing adhesive tape. And putting the adhesive tape process product into an aging room, and placing the adhesive tape process product at normal temperature for 7 days to obtain the UV viscosity-reducing adhesive tape of the PO base material. The UV viscosity-reducing adhesive tape disclosed by the invention can realize the performance that a common UV viscosity-reducing adhesive tape cannot be balanced in a severe environment, has the general characteristics of high adhesive force at an initial stage and extremely low adhesive force after UV treatment in the aspect of performance, can resist strong acid corrosion before UV treatment, can be applied to acid etching protection of glass, can be subjected to viscosity-reducing stripping through UV irradiation after an etching process is completed, and is low in adhesive force and high in adhesive force. And automatic operation is easy, and no adhesive residue risk exists.

The 3D printer with the center pull-down stripping function comprises a workbench and a center stripping mechanism, a transmission mechanism is installed on the workbench, a printing platform is installed on the transmission mechanism, an air guide hole is formed in the printing platform, a model is bonded to the printing platform, a demolding hole communicated with the air guide hole is formed in the model, and the center stripping mechanism is installed on the center stripping mechanism. An adsorber of the center stripping mechanism can move between a working position and a parking position, when the adsorber is located at the working position, the adsorber can adsorb the release film right opposite to the air guide hole, and when the adsorber is located at the parking position, the adsorber is located on the outer side of the projection of the printing platform in the vertical direction. The invention further discloses a 3D printing method. And after printing of one curing layer is completed, the adsorber moves to a working position to adsorb the release film, so that the release film and the curing layer are stripped from inside to outside, meanwhile, the release film and the curing layer are stripped from outside to inside, a bidirectional stripping mode is formed, and the stripping speed and the printing speed are increased.

The invention discloses an anti-adhesion polaroid manufacturing process in the technical field of polaroids, and the anti-adhesion polaroid manufacturing process comprises the steps that a PMMA film containing smooth particles is prepared, the PMMA film comprises a base material face and a primer face opposite to the base material face, and the base material face and the primer face form a uniform microscopic protruding structure through the smooth particles; compounding the PMMA film with a stretched and dyed PVA film through a photocuring adhesive laminating process to form a polarizing film comprising the PVA film, the PMMA film and a TAC film; coating a pressure-sensitive adhesive on the surface of the compounded polarizing film, and compounding a protective film and a release film; according to the manufacturing process, the steps of attaching and tearing off the PE protective film are omitted; according to the invention, the uniformly distributed AB smooth particles form a protruding structure to reduce the friction coefficient, and the steps of attaching and tearing off the PE protective film are omitted, so that the production cost is effectively reduced, the production efficiency is improved, the abnormal gluing is avoided, and the practical value is remarkable.

Silicone roofing materials are provided. A roofing material comprises at least one of a plurality of particles, a silicone coating, a substrate, an adhesive layer, a release liner, or any combination thereof. The substrate is located between the silicone coating and the adhesive layer. The adhesive layer is located between the substrate and the release liner. The release liner covers at least a portion of the adhesive layer. The plurality of particles covers at least a portion of a surface of the silicone coating. Each of the plurality of particles has a surface. When the roofing material is installed on a roofing substrate, at least a portion of the surface of the plurality of particles is exposed to an environment. Related systems and related methods are also provided.

The invention relates to the field of touchpad film materials, and discloses a preparation process of a touchpad mylar and a product. The preparation process of the touch panel mylar comprises the following steps: S1, transferring a texture layer on one side surface of a base material layer by using UV transfer printing glue; s2, carrying out three times of silk-screen printing on the other side surface of the base material layer to sequentially form a first metal ink layer, a second metal ink layer and an insulating ink layer; s3, performing vacuum coating on the texture layer to form a wear-resistant anti-fingerprint layer; and S4, adhering an adhesive layer with a release film to the insulating ink layer, and performing die cutting to obtain the touch panel mylar. The prepared touchpad mylar has good metal texture, wear resistance, smoothness and insulativity, the ink layer and the base material layer are stably attached, the ink layer is not prone to falling off and layering under the use conditions of long-term environment temperature and frequent screen touching of the touchpad mylar, and the touch sensitivity is good.

The invention relates to the technical field of adhesive tapes, in particular to a convex ball-mounting wafer thinning adhesive tape, a preparation method thereof and a wafer thinning machine, the thinning adhesive tape comprises a base material film, a viscosity-reducing adhesive layer and a release film; the preparation method comprises the following steps: preparing a first polymer network; preparing a second polymer network; the adhesive composition is obtained; forming a liquid film; covering the base material film on a liquid film; covering a release film on the upper surface of the fixed module in the wafer thinning machine; in a wafer thinning machine, the wafer with the base material film is installed on a release film, and heating treatment is carried out on the laminated wafer so as to directly form a solidified thinning adhesive tape on the wafer; by constructing a thermal / optical dual-curing interpenetrating polymer network with a dual visbreaking mechanism and combining with a special preparation method of the thinning adhesive tape in a thinning machine, the probability that a convex ball-mounting wafer generates microcracks or warps in a specific area when the adhesive tape is used for thinning operation is reduced.

The invention discloses a PVC blue protective film and a preparation method thereof. The PVC blue protective film comprises a release layer, a blue PVC base film, a priming coat and a pressure-sensitive adhesive layer which are sequentially arranged from top to bottom. The release layer and the priming coat are respectively designed on the two surfaces of the blue PVC base film, a direct coating and direct collecting process mode is adopted, an additional release film does not need to be used, the preparation process is simplified, the production cost is reduced, meanwhile, a plasticizer in the blue PVC base film can be sealed, and the plasticizer is effectively prevented from being separated out; a direct coating process instead of a transfer coating process is adopted, and the base coating is used for clamping, so that the binding strength of the pressure-sensitive adhesive layer and the blue PVC base film is better; the pressure-sensitive adhesive layer adopts a slit coating technology, so that the coating thickness is more uniform, rolling is not easy to occur, and the stability of product quality is improved; the resin in the bottom coating can react with the isocyanate curing agent in the pressure-sensitive adhesive layer, and the resin in the pressure-sensitive adhesive layer can also react with the isocyanate curing agent in the bottom coating, so that the bonding force between the layers is enhanced.

The invention relates to the technical field of TPU materials, in particular to a high-wear-resistance anti-oxidation electroplated TPU film and a preparation method thereof.The high-wear-resistance anti-oxidation electroplated TPU film comprises an elastic UV protection layer, a high-wear-resistance anti-oxidation layer, an electroplated layer and a release paper layer which are sequentially arranged from top to bottom; the high-wear-resistant anti-oxidation layer is made of a high-wear-resistant anti-oxidation TPU (Thermoplastic Polyurethane) material, the electroplated layer is made of an aluminum electroplated film layer, and the release paper layer is made of a PET (Polyethylene Terephthalate) release film layer. The high-wear-resistance anti-oxidation electroplating TPU film has the advantages of wear resistance, oxidation resistance, difficulty in delamination, no conductivity and no sparking, is environment-friendly and energy-saving in the preparation process, and can be used for replacing an electroplating film of a traditional electroplating processing technology.

A release film comprising: a laminated film in which a first coating layer B1 containing a polyester resin containing an inorganic pigment, a void-containing layer A containing voids therein, and a second coating layer B2 containing a polyester resin containing an inorganic pigment are laminated in this order; and a release layer C on at least one side of the laminated film, wherein the void-containing layer A is made of a composition containing a polyester resin, a polyolefin resin, and a silicone resin, and has an apparent density of 0.80 g / cm3 or more and 1.20 g / cm3 or less.

A method of interlaying a metal core for a dual-layer electronic metal payment card. The metal core includes a metal layer having one or more openings formed therein (such as to receive a payment module or another electronic component or aesthetic feature). To interlay the metal core, the metal layer is laminated with a heat activated film layer and a release liner, and the laminated structure is subsequently placed on a heating plate. A polymer is applied only to the one or more openings. Using a containment structure placed over the metal core layer and a combination of heat, vacuum pressure, and pressurized inert gas, the method includes adhering and curing the polymer to the heat activated film to complete the lamination process. After curing, excess polymer is removed via a finishing edge (such as a grinder, a sander, a milling machine, or as similar edge).

The disclosure provides a preparation method of an impact-resistant polyester composition, which is a continuous process and includes the following steps. A recycled release film is crushed, compacted and dried, and then melted, extruded and degassed. The recycled release film contains a recycled PET resin. After filtration, a liquid viscosifying system is used for thickening. Next, it is melted and kneaded, modified with modifiers and extruded. The modifiers include impact modifiers, compatibilizers, antioxidants and lubricants. After the rubber strips are cooled with water, they are then pelletized and dehydrated to produce the impact-resistant polyester composition.