High-temperature-resistant Lijin smart card and its manufacturing method and application

Abstract

The present invention relates to a high-temperature-resistant Lijin smart card and its production method and application, which belongs to the field of smart card preparation technology. It solves the problem that in the existing smart card preparation method, the high-temperature-resistant material and the Lijin material cannot be completely integrated through hot pressing, resulting in bubbles, uneven surface or damage to the laminated steel plate inside the high-temperature-resistant smart card containing the Lijin element. The method of the present invention includes pre-binding coated paper on the printed material with the Lijin mark attached, placing pre-laminated steel plates on the coated paper and on the lower surface of the printed material respectively; pre-laminating so that the thickness of the Lijin mark is partially sunken into the printed material; binding the front surface protective film, the front printing material, the INLAY layer, the back printing material, and the back surface protective film to form a large material, laminating and cutting. The method of the present invention realizes the effective fusion of the high-temperature-resistant material and the Lijin mark material while protecting the laminated steel plate, and the prepared high-temperature-resistant smart card has no bubbles inside, a flat surface, and has obvious three-dimensional and metallic color effects, and can be widely used in the key cards of new energy vehicles that are currently being vigorously developed.

Description

Technical Field

[0001] The present invention relates to the technical field of smart cards, and in particular to a high-temperature-resistant Lijin smart card and a manufacturing method and application thereof. Background Art

[0002] At a time when new energy vehicles are developing vigorously, car key cards are favored by many car manufacturers due to their intelligence and portability. The demand for unique and technological appearance is increasing. At the same time, their daily temperature resistance in the car has also become a key indicator for assessing the product capabilities of each manufacturer.

[0003] Smart cards containing a metallized logo feature a logo embedded in the printed material beneath the surface film. The metallized logo is then integrated into the card through heat lamination, creating a distinct three-dimensional effect and metallic luster. To improve the wear resistance of the smart card, the surface must remain flat and free of protrusions after metallization. Currently, the metallization process for smart cards containing metallized logos requires a certain temperature at which the printed material softens before the metallized logo is pressed in through heat lamination. Furthermore, considering the heat resistance of other smart card components (such as the INLAY layer and surface protective layer), the lamination temperature must be kept within the 90-150°C range. Therefore, using the current metallization process, only PVC, low-temperature PET, or other printed materials with comparable heat resistance can successfully heat-fuse with the metallized logo within this temperature range. This results in a bubble-free, smooth surface that meets the ISO 7811-1 flatness requirements for smart cards.

[0004] Unlike low-temperature-resistant materials, the PET material currently used in high-temperature-resistant smart cards has a Vicat value exceeding 120°C. This makes it difficult to fully fuse the Lijin logo with the material during lamination. This can lead to internal bubbles, surface unevenness, and damage to the laminated steel during manufacturing, severely impacting the production, lifespan, and appearance of high-temperature-resistant cards. While hot stamping can also create a metallic effect on smart cards, the application of the stamped material on the exterior of the card significantly reduces its durability compared to Lijin smart cards.

[0005] In response to the rapidly developing new energy vehicle sector's demand for heat resistance, intelligence, and a unique appearance for car key cards, there is an urgent need to provide a bubble-free, smooth-surfaced, high-temperature-resistant, gold-containing smart card and a preparation method that will not damage laminated steel sheets. This will meet industry standards for smart card service life, heat resistance, and appearance, overcome the problems of existing Lijin smart cards, and meet the needs of car manufacturers for preferred Lijin smart cards. Summary of the Invention

[0006] In view of the above analysis, the embodiments of the present invention aim to provide a high-temperature-resistant Limetal smart card and its manufacturing method and application, so as to solve at least one of the problems of using the existing smart card preparation method, namely, the high-temperature-resistant material and the Limetal material cannot be completely integrated through hot pressing, resulting in bubbles inside the high-temperature-resistant smart card containing Limetal elements, uneven surface or damage to the laminated steel plate.

[0007] In a first aspect, an embodiment of the present invention provides a method for manufacturing a Lijin smart card, the method comprising:

[0008] (1) Printing text and images on the front and back of printed materials;

[0009] (2) pasting a gold label on the printed material, wherein the gold label has a concave-convex pattern;

[0010] (3) pre-binding coated paper on the upper surface of the printed material with the gold mark, and placing pre-laminated steel plates on the lower surfaces of the coated paper and the printed material, respectively, wherein the shapes and sizes of the coated paper and the pre-laminated steel plates correspond to those of the printed material;

[0011] (4) pre-lamination so that most of the thickness of the gold mark is sunk into the printed material, and the pre-lamination includes pre-heating pressing and pre-cooling pressing;

[0012] (5) The front surface protective film, the front printing material, the INLAY layer, the back printing material, and the back surface protective film are bound together to form a large material, laminated, and cut.

[0013] Furthermore, the printing material has a Vicat value of 120-150° C. and a thickness of 0.1-0.188 mm.

[0014] Furthermore, the gram weight of the coated paper is 128-250g / m 2 .

[0015] Furthermore, the hardness of the pre-laminated steel plate is 100-400 HBW and the thickness is 0.5-1.5 mm.

[0016] Furthermore, the preheating and pressing conditions include: a first preheating and pressing time of 3-6 minutes at a temperature of 70-100°C and a pressure of 30-50 bar; a second preheating and pressing time of 7-10 minutes at a temperature of 70-100°C and a pressure of 40-60 bar; and the precooling and pressing conditions include: a first precooling and pressing time of 8-15 minutes at a temperature of 20-30°C and a pressure of 70-90 bar.

[0017] Furthermore, the thickness of the gold mark is 0.03-0.06 mm.

[0018] Furthermore, the thickness of the surface protection film is 0.08-0.2 mm.

[0019] Furthermore, the lamination includes hot pressing and cold pressing. Specifically, the hot pressing conditions include: a first hot pressing for 6-15 minutes at a temperature of 145-155°C and a pressure of 70-90 bar; a second hot pressing for 7-16 minutes at a temperature of 145-155°C and a pressure of 80-110 bar; the cold pressing conditions include: a first cold pressing for 3-6 minutes at a temperature of 20-30°C and a pressure of 90-120 bar; a second cold pressing for 7-16 minutes at a temperature of 20-30°C and a pressure of 100-130 bar.

[0020] In a second aspect, an embodiment of the present invention provides a Lijin smart card, which is manufactured by the method described in the first aspect.

[0021] In a third aspect, an embodiment of the present invention provides an application of a Lijin smart card in a car key card, wherein the Lijin smart card is the Lijin smart card described in the second aspect.

[0022] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0023] 1. Before laminating the INLAY layer, the printed layer with the gold label, and the surface protection layer, the printed material with the gold label is pre-laminated, so that part of the thickness (50-100%) of the gold element is sunk into the printed material, achieving good fusion with the printed material, reducing the difficulty of laminating large materials; especially for high-temperature-resistant hard printing materials with high Vicat values (≥120°C), it can also prevent bubbles from appearing inside the smart card and uneven surfaces ( Figure 4 ), and can prevent the problem of damage to the laminated steel plate and / or smart card caused by the high-temperature-resistant printed smart card preparation process due to the high-temperature-resistant material being too hard.

[0024] 2. The present invention limits the thickness of the printed material and the gold label, which must meet the requirements of the preparation process and application environment for card thickness, as well as the requirements of fusion between the gold elements and the printed material after lamination, obvious three-dimensionality, and metallic color effects. The thickness of the printed material of the present invention is 0.1-0.188mm, and the thickness of the gold label is 0.03-0.06mm.

[0025] 3. The high-temperature-resistant Lijin smart card prepared by the present invention was tested using a temperature shock method. It was found that after the smart card was subjected to temperature shocks within the temperature range of (-35)-85°C for 100 times, the card surface did not change and could be used normally. Under the same test conditions, after the low-temperature-resistant Lijin smart card in the prior art was subjected to temperature shocks within the temperature range of (-35)-85°C for 100 times, visible bending deformation appeared on the card surface. After the high-temperature-resistant Lijin smart card in the prior art was subjected to temperature shocks within the temperature range of (-35)-85°C for 100 times, the card surface had visible warping at the four corners.

[0026] 4. The coated paper used in the pre-lamination process of the present invention can be reused many times, which is energy-saving and environmentally friendly.

[0027] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of the present invention will be described in the following description, and some advantages will become apparent from the description or be learned through practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like parts throughout the drawings.

[0029] Figure 1 The process flow of making high-temperature-resistant Lijin smart card of the present invention;

[0030] Figure 2 This is a schematic structural diagram of the high-temperature-resistant Lijin smart card of the present invention;

[0031] Figure 3 This is a physical picture of the high-temperature-resistant Lijin smart card 1-4 prepared in Examples 1-4 of the present invention;

[0032] Figure 4 This is a physical picture of the high-temperature-resistant Lijin smart card 5 prepared in Comparative Example 1 of the present invention;

[0033] Figure 5 This is a physical picture of the high-temperature-resistant Lijin smart card 6 prepared in Comparative Example 2 of the present invention;

[0034] Reference numerals:

[0035] 1-INLAY layer; 2-printing layer; 3-protective film layer; 4-metal layer. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0037] A specific embodiment of the present invention discloses a method for manufacturing a Lijin smart card, the method comprising:

[0038] (1) Printing text and images on the front and back of printed materials;

[0039] (2) pasting a gold label on the printed material, wherein the gold label has a concave-convex pattern;

[0040] (3) pre-binding coated paper on the upper surface of the printed material with the gold mark, and placing pre-laminated steel plates on the lower surfaces of the coated paper and the printed material, respectively, wherein the shapes and sizes of the coated paper and the pre-laminated steel plates correspond to those of the printed material;

[0041] (4) pre-lamination so that most of the thickness of the gold mark is sunk into the printed material, and the pre-lamination includes pre-heating pressing and pre-cooling pressing;

[0042] (5) The front surface protective film, the front printing material, the INLAY layer, the back printing material, and the back surface protective film are bound together to form a large material, laminated, and cut.

[0043] Smart cards containing free-standing gold elements and having a smooth surface are made by pressing the free-standing gold mark into the printed material through hot lamination at a certain temperature when the printed material is softened. At the same time, considering the temperature resistance of the materials of other parts of the smart card (INLAY layer, surface protection layer, etc.), the hot lamination temperature cannot be too high and is within the range of 90-150°C. With the current free-standing gold process, only PVC, low-temperature resistant PET or other printed materials with equivalent heat resistance can be well hot-pressed and fused with the free-standing gold element within this temperature range, resulting in a bubble-free smart card with a smooth surface, which meets the relevant flatness requirements of ISO7811-1 for smart cards.

[0044] For smart cards using high-temperature-resistant printing materials, since high-temperature-resistant printing materials have a higher Vicat value and higher material hardness at the same temperature, if the previous gold-plating process is used, it will be difficult to completely fuse the gold-plating mark with it during lamination, resulting in bubbles inside the obtained smart card and an uneven surface. If the lamination strength is increased, the gold-plating mark will be forced into the printed layer by pressure, which may easily cause damage to the laminated steel plate and / or the smart card; if the lamination temperature is increased, the printed material will be softened to allow the gold-plating mark to be pressed in. At such a high temperature, the materials of other parts of the smart card (INLAY layer, surface protection layer, etc.) will be melted into liquid, causing deformation or defects in the smart card.

[0045] Before laminating the INLAY layer, the printing layer with the gold mark, and the surface protection layer, the printing layer with the gold mark is pre-laminated, so that part of the thickness of the gold element is sunk into the printing material, and the printing material is well integrated, which reduces the difficulty of laminating large materials; especially for high-temperature-resistant hard printing materials with high Vicat values (≥120°C), it can also prevent bubbles from appearing inside the smart card and uneven surfaces ( Figure 4 ), and can prevent the problem of damage to the laminated steel plate and / or smart card caused by the high-temperature-resistant printed smart card preparation process due to the high-temperature-resistant material being too hard.

[0046] It should be noted that the present invention can use offset printing or silk screen printing to print graphics on the front / back printing material. According to a preferred embodiment of the present invention, the present invention uses offset printing, which specifically includes: using a CTP platemaking machine to separate the colors and make plates for the patterns that need to be offset printed, shrinking each edge of the area where the gold label is to be pasted by 0.15mm, and using a dotted line as a positioning mark for the gold label; using a UV offset printing machine to offset print the required graphics and perform UV drying, and the ink used is UV ink.

[0047] It should be noted that the front / back printing material of the present invention can be PET (polyethylene terephthalate) or other plastics with the same Vicat value range, such as one or more of PVC (polyvinyl chloride), ABS (polyacrylonitrile butadiene styrene), and PC (polycarbonate). According to a preferred embodiment of the present invention, the printing material of the present invention is PET.

[0048] It should be noted that the present invention pre-positions the gold label on the front and / or back printed materials according to pre-printed dotted alignment lines. Specifically, the protective tape layer below the gold label is removed and the label is positioned on the printed material using an adhesive. The protective tape layer above the gold label is retained until the printed material, surface protection film, and INLAY layer are subsequently bound and positioned. This helps to make the gold label surface more resistant to friction before lamination.

[0049] It should be noted that the gold label of the present invention has a concave-convex pattern, which not only allows part of the thickness of the pattern to be embedded in the printed layer and integrated with the card to increase durability, but also the pattern has obvious three-dimensional and metallic color effects.

[0050] It should be noted that the printed material with the gold label is pre-bound with coated paper, aligned correctly, to facilitate subsequent separation, eliminating the need for heat binding. The rigidity of coated paper allows the gold label to be pressed into the highly heat-resistant printed material under specific lamination parameters. Furthermore, its plasticity allows for repeated use, which is energy-efficient and environmentally friendly.

[0051] It should be noted that laminated steel plates are placed on the pre-bound coated paper and on the lower surface of the printed material respectively; wherein, in order to achieve a better pre-lamination effect, the shapes and sizes of the coated paper and the pre-laminated steel plates correspond to the printed material.

[0052] It should be noted that in order to embed part of the thickness of the pattern into the printed layer and integrate them into one, reduce the difficulty of laminating the large materials of the smart card, improve the gold-plating effect of the high-temperature-resistant gold-plating smart card, and reduce damage to the laminated steel plate and / or smart card, the present invention pre-laminates the gold-plating mark and the printed material.

[0053] Specifically, the pre-lamination includes hot pressing and cold pressing. During hot pressing, the printed material is in a softened state, so that most of the thickness of the gold mark (50-100%) is pressed into the printed material layer; during cold pressing, the printed material is solidified and integrated with the printed material, and the concave and convex pattern of the gold mark is higher than the printed material (but the thickness of the gold mark above the printed material is less than the thickness of the surface protective film), so that the gold mark has obvious three-dimensional and metallic color effects on the surface of the smart card, while ensuring that the surface of the smart card is flat, without protrusions, and wear-resistant.

[0054] It should be noted that the front surface protective film, front printing material, INLAY layer, back printing material, and back surface protective film are bound in this order to form a large material, which is then laminated and cut to produce the Lijin smart card. Depending on specific needs, the smart card's appearance can be further improved, such as by hot stamping and varnishing. After cutting, the card undergoes a full electrical performance inspection. Personalization equipment is used to program the small cards according to customer requirements. Finally, the cards are packaged and stored.

[0055] It should be noted that the front / back surface protective film of the present invention can be PVC, PET, PC (polycarbonate), etc. According to a preferred embodiment of the present invention, the present invention adopts PVC surface protective film.

[0056] It should be noted that the INLAY layer of the present invention is the INLAY layer commonly used in smart cards, which can be purchased or manufactured using any existing method.

[0057] Specifically, the preparation method of the INLAY layer includes the following steps:

[0058] S1: Gun positioning hole

[0059] Two positioning holes are provided for cutting large inlay sheets, one on each adjacent side, for positioning between subsequent large sheets. In principle, they should be consistent with the positioning edges when cutting large sheets.

[0060] S2: Module cutting and gun positioning large and small holes

[0061] Use module slitting and cut the rolled non-contact modules into pieces. Use a specific punching die to punch large and small positioning holes corresponding to the non-contact modules in the large-hole PVC layer and the small-hole PVC layer according to the antenna design drawing.

[0062] S3: Winding

[0063] The winding layer PVC is processed for wire embedding by ultrasonic winding equipment;

[0064] S4: Module Positioning

[0065] The module swinging equipment uses the positioning holes of different sizes cut by the gun and the tape strips to position the non-connected modules.

[0066] S5: Module welding

[0067] Use ultrasonic welding equipment to weld the implanted enameled wire and non-contact modules.

[0068] S6: Binding

[0069] The embedded wire layer, positioning layer (large hole layer, small hole layer) and substrate layer are bound and positioned by a binding machine.

[0070] S7: Overlay and lamination

[0071] The bound inlay sheets are laid out with high-temperature cloth, steel plates, and laminating pads. Generally, 10 sets form a layer and are placed in the laminating equipment for lamination.

[0072] S8: Contactless function detection

[0073] Use the laminated INLAY layer to conduct electrical performance testing on non-contact performance testing equipment.

[0074] The Vicat value of the printing material of the present invention is 120-150°C. If the Vicat value is too low, during the manufacturing process of the Lijin smart card, it is not necessary to pre-laminate the Lijin logo and the printed layer. The printed layer with the Lijin logo, the INLAY layer and the surface protection film layer can be directly hot-laminated to well fuse the Lijin logo and the printed layer. However, the temperature resistance of the resulting smart card is very poor. If the Vicat value is too high, the Lijin logo cannot be pressed in using the pre-lamination method of the present invention.

[0075] The thickness of the printing layer of the present invention is 0.1-0.188mm, which not only meets the requirements of the preparation process and application environment for card thickness, but also meets the requirement that the thickness of the gold mark after lamination is partially sunken into the upper surface layer of the printed material to achieve hot pressing fusion.

[0076] It should be noted that in order to achieve the best lamination effect and take into account the economy of the material, the hardness and thickness of the coated paper need to be limited.

[0077] Specifically, the gram weight of the coated paper of the present invention is 128-250g / m 2 If the grammage of the coated paper is too low, it will make it impossible to press the metal stamping material into the printed material, or it will make it impossible to effectively protect the laminated steel plate from being damaged by the metal stamping material during the lamination process. If the grammage of the coated paper is too high, it will reduce the economic efficiency. First, it is unnecessary in terms of technology and wastes resources. Second, when the grammage is too high, the lamination will leave a mark of the metal stamping on the coated paper, which cannot be reused and causes waste.

[0078] It should be noted that in order to ensure a better pre-lamination effect, the thickness and hardness of the pre-laminated steel plate need to be limited.

[0079] Specifically, the pre-laminated steel sheet of the present invention has a hardness of 100-400 HBW and a thickness range of 0.5-1.5 mm. If the hardness of the pre-laminated steel sheet is too low, it is susceptible to scratches and dents. On the other hand, if the hardness is too high, the production cost of the pre-laminated steel sheet is too high. If the thickness is too small, the pre-laminated steel sheet is prone to deformation during the pre-lamination process, while if the thickness is too large, the cost is increased.

[0080] It should be noted that in order to achieve the fusion between the printed material and the gold label, the present invention requires preheating and pressing the printed material with the gold label.

[0081] Specifically, the preheating and pressing conditions include: a single preheating and pressing for 3-6 minutes at a temperature of 70-100°C and a pressure of 30-50 bar; a secondary preheating and pressing for 7-10 minutes at a temperature of 70-100°C and a pressure of 40-60 bar; through segmented preheating and pressing, the gradual pressurization process can be beneficial for the discharge of air between the card materials, and is also beneficial for the protection of the INLAY layer chip inside the card. The appropriate temperature puts the printed material in a suitable softened state to press the gold label in, while preventing the printed material from turning into a liquid phase due to excessively high temperature; the appropriate pressure ensures that the gold label is partially pressed into the softened printed material, while preventing the gold label from being completely pressed into the printed material, causing the gold label to lose its three-dimensional and metallic color effect on the smart card. If the hot pressing time is too short, the gold label cannot be well integrated with the printed material; if the time is too long, it will result in a waste of production capacity resources.

[0082] It should be noted that in order to solidify the shape of the printed layer and the gold label after lamination, the present invention needs to pre-cold press the printed material with the gold label attached after pre-heating and pressing.

[0083] Specifically, the pre-cold pressing conditions include: a temperature of 20-30°C and a pressure of 70-90 bar, for 8-15 minutes. If the cold pressing temperature is too high, the printed layer after pre-lamination cannot be cured; if the temperature is too low, sudden cooling after heating can easily cause deterioration and brittleness of the card material, as well as adverse effects such as moisture generation. Excessive cold pressing pressure can damage the printed layer or the gold label, while too little pressure can prevent the final laminated form of the printed layer and the gold label from being achieved. A long cold pressing time wastes energy; too short a time prevents complete curing, cooling, and the final state after pre-lamination from being achieved.

[0084] It should be noted that in order to allow part of the thickness of the gold label to be integrated with the printed material through pre-lamination, while ensuring that the gold label has obvious three-dimensionality and metallic color on the smart card and has a certain economic rationality, the present invention needs to limit the thickness of the gold label.

[0085] Specifically, the thickness of the gold label is 0.03-0.06mm. If the gold label is too thick, it may easily penetrate the printed layer during pre-lamination, or the portion of the gold label that protrudes from the printed surface may be too thick, resulting in subsequent smart card manufacturing failures or bubbles and uneven surfaces. If the gold label is too thin, the 3D effect may not be obvious.

[0086] It should be noted that in order to allow the surface protection film to fuse and cover the portion of the gold mark protruding from the printed material during the lamination process of the smart card, the thickness of the surface protection film layer of the smart card needs to be limited.

[0087] Specifically, the thickness of the surface protection film is 0.08-0.2mm. If the surface protection film is too thick, the thickness of the smart card will not be able to meet the requirements of the card manufacturing process and the usage environment; if the surface protection film is too thin, it will not be able to integrate and cover the gold label well, and the gold label will easily fall off.

[0088] It should be noted that in order to combine the printed material with the gold mark, the INLAY layer, and the surface protective film to form a gold smart card, and at the same time fuse and cover the part of the gold mark protruding from the printed material with the surface protective film, it is necessary to laminate the layers of the smart card. Specifically, before lamination, the layers need to be bound in the order of the front surface protective film, the front printed material, the INLAY layer, the back printed material, and the back surface protective film to form a large material, wherein the front printed material and / or the back printed material of the large material are fused with the gold mark.

[0089] Specifically, the lamination includes hot pressing and cold pressing. Specifically, the hot pressing conditions include: a first hot pressing for 6-15 minutes at a temperature of 145-155°C and a pressure of 70-90 bar; a second hot pressing for 7-16 minutes at a temperature of 145-155°C and a pressure of 80-110 bar; the cold pressing conditions include: a first cold pressing for 3-6 minutes at a temperature of 20-30°C and a pressure of 90-120 bar; a second cold pressing for 7-16 minutes at a temperature of 20-30°C and a pressure of 100-130 bar. Segmented hot lamination and segmented cold lamination are beneficial to the discharge of gas inside the card during the lamination process, which helps to improve the lamination yield rate; the smart card material is softened at the appropriate temperature and forms a tight bond under the action of appropriate pressure. The lamination temperature and pressure are interrelated. Appropriate temperature and pressure help improve the bonding effect, strength and appearance of the smart card; in addition, the lamination time is also important. If the hot lamination time is too short, it will affect the bonding effect and card strength of the card; if the hot lamination time is too long, it will cause defects such as deformation, wrinkles or discoloration on the card surface, affecting the appearance of the card and increasing the production cycle and cost.

[0090] It should be noted that during the lamination process, laminating pads are placed between the upper and lower surfaces of the bulk material and the laminating steel plates, respectively. The laminating pads are made of silicone or felt. According to a preferred embodiment of the present invention, multiple layers of bulk material can be stacked during lamination, with the laminating steel plates placed on the upper and lower surfaces of each layer of bulk material, respectively. Laminating pads are placed between the uppermost and lowermost laminating plates and the bulk material of each layer of bulk material in the laminating machine, with the multiple layers being 2-10 layers.

[0091] A specific embodiment of the present invention discloses a smart card, such as Figure 2 、 3 As shown, the Lijin smart card is manufactured by the method described in the first aspect.

[0092] The high-temperature-resistant Lijin smart card prepared by the method of the present invention was tested using a temperature shock method. It was found that after the smart card was subjected to temperature shocks 100 times in the temperature range of (-35)-85°C, the card surface did not change and could be used normally; under the same test conditions, after the low-temperature-resistant Lijin smart card in the prior art was subjected to temperature shocks 100 times in the temperature range of (-35)-85°C, visible bending deformation appeared on the card surface; after the high-temperature-resistant Lijin smart card in the prior art was subjected to temperature shocks 100 times in the temperature range of (-35)-85°C, the card surface had visible warping at the four corners.

[0093] A specific embodiment of the present invention discloses an application of a Lijin smart card in a car key card, wherein the Lijin smart card is the Lijin smart card described in the second aspect.

[0094] The smart card containing the metal element of the present invention is applied to a car key card, which is not only easy to carry and has a unique and technological appearance, but also durable.

[0095] Example 1

[0096] A method for manufacturing a gold-labeled smart card 1, the method comprising:

[0097] (1) Use a UV offset printing machine to offset print a gold mark on the PET positive printing material. The Vicat value of the printing material is 120°C and the thickness is 0.188 mm.

[0098] (2) tearing off the protective tape layer at the bottom of the gold label, and pasting the gold label showing the words "Beijing Huahong" and the logo on the preset area on the positive printing material in step (1), wherein the gold label has a concave-convex pattern and a thickness of 0.04 mm;

[0099] (3) Paste the coated paper on the upper surface of the positive printed material with the gold mark, and place pre-laminated steel plates on the upper surface of the coated paper and the lower surface of the positive printed material respectively. The weight of the coated paper is 200g / m 2 The hardness of the pre-laminated coated paper is 300 HBW and the thickness is 0.8 mm. The dimensions of the coated paper and pre-laminated steel plate are comparable to those of the PET positive printing material.

[0100] (4) Pre-lamination, specifically: pre-heating and pressing at a temperature of 90°C and a pressure of 40 bar for 5 minutes; pre-heating and pressing at a temperature of 90°C and a pressure of 50 bar for 8 minutes; pre-cold pressing at a temperature of 20°C and a pressure of 80 bar for 10 minutes, to obtain a positive printing material with a gold mark fused on the surface layer;

[0101] (5) The PVC front surface protective film, the front printing material obtained in step (4), the INLAY layer, the PET back printing material, and the PVC back surface protective film are sequentially stacked, positioned, and bound to form a large material; 10 layers of large materials are stacked, and the laminated steel plates are placed on the upper and lower surfaces of the 10 layers of large materials respectively, and a silicone laminating pad is set between the uppermost and lowermost laminated steel plates and the large materials every 10 layers of large materials in the laminating machine; lamination is specifically as follows: at a temperature of 150°C and a pressure of 80 bar, hot pressing for 10 minutes; at a temperature of 150°C and a pressure of 90 bar, hot pressing for 15 minutes; at a temperature of 20°C and a pressure of 100 bar, cold pressing for 5 minutes; at a temperature of 20°C and a pressure of 120 bar, cold pressing for 10 minutes to form a large sheet, and cutting it to obtain the Lijinbiao smart card 1.

[0102] Photos showing the effect of the gold-plated smart card 1 Figure 3 As shown (first from left), Figure 3The Lijin Smart Card 1 is shown to have no bubbles inside, a smooth surface, and a distinct three-dimensional and metallic effect. Temperature shock testing of the Lijin Smart Card 1 revealed no surface warping after 100 cycles within a temperature range of -35°C to 85°C, demonstrating normal use.

[0103] Example 2

[0104] A gold-labeled smart card 2 was prepared according to the preparation method of Example 1, except that the thickness of the PET positive printing material was 0.1 mm.

[0105] Photos showing the Lijin effect of Lijin Label Smart Card 2 Figure 3 As shown (second from left), Figure 3 The Lijin Smart Card 2 is bubble-free, has a smooth surface, and exhibits a distinct three-dimensional and metallic effect. Temperature shock testing of the Lijin Smart Card 2 revealed no surface warping after 100 cycles within a temperature range of -35°C to 85°C, demonstrating normal operation.

[0106] Example 3

[0107] A gold-labeled smart card 3 was prepared according to the preparation method of Example 1, except that the weight of the coated paper used for pre-lamination was 158 g / m 2 .

[0108] Photos showing the Lijin effect of Lijin Biao smart card 3 Figure 3 As shown (third from left), Figure 3 The Lijin Smart Card 3 is bubble-free, has a smooth surface, and exhibits a distinct three-dimensional and metallic effect. Temperature shock testing of the Lijin Smart Card 3 revealed no surface warping after 100 cycles within a temperature range of -35°C to 85°C, demonstrating normal operation.

[0109] Example 4

[0110] The Lijinbiao smart card 4 was prepared according to the preparation method of Example 1, except that the pre-lamination process was: preheating and pressing for 5 minutes at a temperature of 100°C and a pressure of 30 bar; preheating and pressing for 8 minutes at a temperature of 100°C and a pressure of 40 bar; and precooling and pressing for 10 minutes at a temperature of 30°C and a pressure of 80 bar.

[0111] Photos showing the Lijin effect of the Lijin smart card 4 Figure 3 As shown (fourth from the left), Figure 3The Lijin Smart Card 4 is bubble-free, has a smooth surface, and exhibits a distinct three-dimensional and metallic effect. Temperature shock testing of the Lijin Smart Card 4 revealed no surface warping after 100 cycles within a temperature range of -35°C to 85°C, demonstrating normal operation.

[0112] Comparative Example 1

[0113] The method for making the gold-labeled smart card 5 is the same as the method for making the smart card in Example 1, except that the method for making the gold-labeled smart card 5 does not include steps (3) and (4) of pre-laminating the printed material with the gold-labeled smart card using coated paper and pre-laminated copper plate.

[0114] Photos showing the Lijin effect of the Lijin smart card 5 Figure 4 As shown, from Figure 4 It can be seen that there are bubbles inside the Lijinbiao smart card 5 and the surface is uneven. After the Lijinbiao smart card 5 is subjected to a temperature range of (-35)-85℃ for 100 times, the card surface has four corners that are visibly warped.

[0115] Comparative Example 2

[0116] The manufacturing method of the gold-labeled smart card 6 is the same as that of the embodiment 1, except that:

[0117] The PET positive printing material is replaced with PC positive electrode material, and the Vicat value is 160℃.

[0118] Photos showing the Lijin effect of the Lijin smart card 6 Figure 5 As shown, from Figure 5 It can be seen that there are bubbles inside the Lijinbiao smart card 6 and the surface is uneven.

[0119] Comparative Example 3

[0120] The manufacturing method of the gold label smart card 7 is the same as that of the embodiment 1, except that the weight of the coated paper is 60g / m 2 It was found that the pre-laminated steel sheets were damaged during the preparation of smart cards.

[0121] Comparative Example 4

[0122] The same method as in Example 1 was used, except that the pre-lamination in step (4) only included a pre-heating pressing process but not a pre-cold pressing process. It was found that the printed material after being fused with the gold mark was bent during the subsequent cooling process.

[0123] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A method for manufacturing a Lijin smart card, characterized in that: The method includes a pre-lamination process of embedding a gold mark into a printed material, specifically comprising: (1) Printing text and images on the front and back of printed materials; (2) pasting a gold mark on the printed material, wherein the gold mark has a concave-convex pattern, wherein the Vicat value of the printed material is 120-150° C.; (3) Pre-binding coated paper on the upper surface of the printed material with the gold mark, and placing pre-laminated steel plates on the lower surfaces of the coated paper and the printed material, respectively, wherein the shape and size of the coated paper and the pre-laminated steel plate correspond to the printed material, and the gram weight of the coated paper is 128-250g / m 2 ; (4) Pre-lamination makes most of the thickness of the gold mark sink into the printed material, and the pre-lamination includes pre-heating and pre-cooling. The pre-heating conditions include: a temperature of 70-100 ° C, a pressure of 30-50 bar, a pre-heating press for 3-6 minutes; a temperature of 70-100 ° C, a pressure of 40-60 bar, a second pre-heating press for 7-10 minutes; the pre-cooling conditions include: a temperature of 20-30 ° C, a pressure of 70-90 bar, a pre-cooling press for 8-15 minutes; (5) Binding the front surface protective film, the front printing material, the INLAY layer, the back printing material, and the back surface protective film to form a large material, laminating and cutting; The thickness of the printed material is 0.1-0.188 mm; The pre-laminated steel plate has a hardness of 100-400 HBW and a thickness of 0.5-1.5 mm; The thickness of the gold mark is 0.03-0.06mm; The thickness of the surface protection film is 0.08-0.2 mm.

2. The method according to claim 1, characterized in that The lamination includes hot pressing and cold pressing. The conditions of the hot pressing include: a first hot pressing for 6-15 minutes at a temperature of 145-155°C and a pressure of 70-90 bar; a second hot pressing for 7-16 minutes at a temperature of 145-155°C and a pressure of 80-110 bar; the conditions of the cold pressing include: a first cold pressing for 3-6 minutes at a temperature of 20-30°C and a pressure of 90-120 bar; and a second cold pressing for 7-16 minutes at a temperature of 20-30°C and a pressure of 100-130 bar.

3. A Lijin smart card, characterized in that: The Lijin smart card is manufactured by the method according to claim 1 or 2.

4. A car key card, characterized in that: The car key card is a Lijin smart card, and the Lijin smart card is the Lijin smart card described in claim 3.

Images