Glow-in-the-dark yarn preparation method, and intelligent terminal protective case and preparation method therefor

Abstract

A glow-in-the-dark yarn preparation method, and an intelligent terminal protective case (3) and a preparation method therefor. The intelligent terminal protective case (3) is at least partially woven from a glow-in-the-dark yarn, and the cross section of the glow-in-the-dark yarn comprises a coated luminescent layer (1). The glow-in-the-dark yarn preparation method comprises the following steps: applying luminescent slurry onto a substrate layer (2) to obtain the coated luminescent layer (1), and die-cutting the coated luminescent layer (1) to obtain the glow-in-the-dark yarn. The preparation method for the intelligent terminal protective case (3) comprises the following steps: weaving the glow-in-the-dark yarn to obtain a glow-in-the-dark fabric, impregnating the glow-in-the-dark fabric and then performing multi-layer molding and hot-press forming thereon to obtain the intelligent terminal protective case (3).

Description

Luminous yarn preparation method, intelligent terminal protective shell and preparation method thereof

[0001] The present application claims priority to the Chinese patent application No. 202421397089.5, filed on June 18, 2024, entitled "A Yarn for Woven Shell and Intelligent Terminal Shell", and the Chinese patent application No. 202410794190.2, filed on June 18, 2024, entitled "Luminous Yarn Preparation Method, Intelligent Terminal Protective Shell and Preparation Method Thereof", which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of protective shells, in particular to a luminous yarn preparation method, an intelligent terminal protective shell and a preparation method thereof. BACKGROUND

[0003] In recent years, with the development of society and the diversification of consumer aesthetics, people are increasingly pursuing personalized products; the protective shells of intelligent terminals, especially mobile phones and other products on the market, have become a way to show personal taste and style.

[0004] The current mobile phone market is highly competitive, and mobile phone case manufacturers are constantly introducing novel and functional mobile phone cases, such as luminous mobile phone cases, to attract consumers and ensure that the intelligent terminal protective shell can emit light at night, thereby meeting the personalized needs of consumers,

[0005] However, research has found that existing traditional luminous protective shells usually attach fluorescent markers to existing protective shells to achieve the luminous function, and the attached fluorescent markers are not wear-resistant and can cause the entire protective shell to be uneven and have a poor feel in use. The luminous cloth obtained by the traditional luminous yarn preparation method has a granular surface, which can cause luminous intensity loss and is not conducive to the luminous effect of the intelligent terminal protective shell. At the same time, the luminous cloth produced by the previous luminous cloth preparation process does not have the strength, hardness, etc. suitable for the intelligent terminal protective shell on the market. TECHNICAL PROBLEM

[0006] The technical problem to be solved by the present application is that the present application discloses a luminous yarn preparation method, an intelligent terminal protective shell and a preparation method thereof, to solve the problem that existing luminous protective shells usually attach fluorescent markers to existing protective shells to achieve the luminous function, and the fluorescent markers are not wear-resistant and can cause the entire protective shell to be uneven and have a poor feel in use. TECHNICAL SOLUTION

[0007] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: an intelligent terminal protective shell is knitted at least partially by using night light yarn, and the night light yarn comprises a coated luminescent layer.

[0008] In the above technical scheme of the present application, a new intelligent terminal protective shell is designed, which is knitted by using night light yarn, and the night light yarn is knitted on the intelligent terminal protective shell to solve the problems of the existing conventional protective shell, such as the non-wear-resistant fluorescent identification, the uneven outer surface of the entire protective shell, and the poor hand feeling.

[0009] Further, in the intelligent terminal protective shell, the cross section of the night light yarn is specifically a two-layer structure, i.e., a base material layer and a coated luminescent layer arranged in layers; the sum of the thicknesses of the base material layer and the coated luminescent layer is greater than or equal to 0.1 mm and less than or equal to 0.16 mm.

[0010] Further, in the intelligent terminal protective shell, the diameter specification of the night light yarn is less than or equal to 1500D or greater than or equal to 600D.

[0011] Further, in the intelligent terminal protective shell, the thickness of the base material layer is greater than or equal to 0.01 mm and less than or equal to 0.05 mm, and the thickness of the coated luminescent layer is greater than or equal to 0.05 mm and less than or equal to 0.15 mm.

[0012] Further, in the intelligent terminal protective shell, the thickness of the base material layer of the night light yarn is less than the thickness of the coated luminescent layer.

[0013] In addition, another object of the present application is to disclose a night light yarn preparation method, which can correspondingly prepare night light yarn to facilitate subsequent knitting to obtain the intelligent terminal protective shell of the present application.

[0014] In the present application, the night light yarn preparation method comprises the following steps:

[0015] Step S10: preparing a base material layer and a separation film;

[0016] Step S20: mixing a carrier resin, a luminescent inorganic substance, a plasticizer and an additive to obtain a luminescent original paste;

[0017] Step S30: pouring the luminescent original paste into a storage distribution cavity;

[0018] Step S40: continuously advancing the base material layer to a winding direction by using a roller to make the luminescent original paste pass through a slit to be uniformly applied to the base material layer in a liquid module shape with a certain thickness to form a coated luminescent layer;

[0019] Step S50 drying, cooling, solidifying the coated luminescent layer;

[0020] Step S60 after the isolation film is compounded with the coated luminescent layer, the coated luminescent layer is wound to obtain a wound luminescent roll;

[0021] Step S70 removing the isolation film;

[0022] Step S80 die cutting the wound luminescent roll to obtain a luminescent yarn.

[0023] It can be seen from the above technical solution that, in view of the problems existing in the prior art, the present application designs a new matt yarn preparation method. The luminescent yarn prepared by the luminescent yarn preparation method has very excellent performance. The luminescent cloth prepared by the luminescent yarn has a smooth surface, little loss of luminescent intensity, and is more wear-resistant than the fluorescent mark attached to the mobile phone shell, which can ensure that the outer surface of the protective shell is smoother and has a good use feel. In addition, the strength and hardness of the luminescent yarn prepared by the luminescent yarn preparation method of the present application are more suitable for protective shells, which has good popularization prospect and application value.

[0024] Further, in the luminescent yarn preparation method of the present application, the step S10 is specifically: using a thin film material as a base material layer, and the base material layer and the coated luminescent layer use materials that are compatible at high temperatures.

[0025] Further, in the luminescent yarn preparation method of the present application, the step S20 is specifically: mixing 30%-70% of a carrier resin, 20%-70% of a luminescent inorganic substance, and 0-10% of a plasticizer and an auxiliary to obtain a luminescent raw paste.

[0026] Further, in the luminescent yarn preparation method of the present application, the luminescent inorganic substance contained in the coated luminescent layer is inside the carrier resin by pressure.

[0027] In addition, another object of the present application is to disclose a preparation method of a smart terminal protective shell, which can use the luminescent yarn prepared by the luminescent yarn preparation method described above, and prepare the smart terminal protective shell of the present application. It specifically includes the following steps:

[0028] Step P10 weaving the luminescent cloth by using the luminescent yarn of the present application described above;

[0029] Step P20 pre-impregnating the luminescent cloth in a high molecular resin to obtain an impregnated cloth;

[0030] Step P30 laminating multiple layers of the impregnated cloth and then molding;

[0031] Step P40 forming after hot pressing;

[0032] Step P50 cutting and painting the excess edge after molding.

[0033] Further, in the preparation method of the intelligent terminal protective shell, in step P40, the coating luminescent layer and the substrate layer of the luminescent yarn penetrate each other during hot pressing.

[0034] Further, in the preparation method of the intelligent terminal protective shell, step P40 is specifically:

[0035] The temperature is set to 70-90 DEG C, and the molding is performed for 20-40 minutes; then the temperature is set to 100-120 DEG C, and the molding is performed for 1.5-2.5 hours.

[0036] Or, the temperature is set to 120-150 DEG C, and the molding is performed for 30-90 minutes.

[0037] Further, in the preparation method of the intelligent terminal protective shell, in step P10, the luminescent cloth is woven by mixing the luminescent yarn and synthetic fiber in plain weave and / or twill weave. Beneficial effects

[0038] The luminescent yarn preparation method, the intelligent terminal protective shell and the preparation method thereof have the following beneficial effects: the luminescent yarn preparation method, the intelligent terminal protective shell and the preparation method thereof adopt the luminescent yarn weaving technology combined with the impregnation treatment of the high molecular resin, and are subjected to the laminated molding and hot pressing of the multi-layer impregnated cloth and the edge cutting, so that the luminescent yarn luminescent cloth prepared by the preparation method has a smooth surface and little loss of luminescent intensity; based on the luminescent yarn, the intelligent terminal protective shell is further prepared, which can emit luminescence based on the coating luminescent layer of the luminescent yarn, and has better wear resistance, smoother appearance and better use feeling than the fluorescent identification label attached to the mobile phone shell, and has good popularization prospect and application value. BRIEF DESCRIPTION OF DRAWINGS

[0039] Fig. 1 is a step flow chart of the luminescent yarn preparation method in an embodiment of the present application.

[0040] Fig. 2 is a structure schematic view of the intelligent terminal protective shell in an embodiment of the present application.

[0041] Fig. 3 is a cross-sectional structure schematic view of the luminescent yarn of the intelligent terminal protective shell in an embodiment of the present application.

[0042] Fig. 4 is a step flow chart of the preparation method of the intelligent terminal protective shell in an embodiment of the present application.

[0043] Figure 5 is a detailed flow chart of step P40 of the preparation method of the intelligent terminal protective shell according to the present application in another embodiment.

[0044] Label explanation:

[0045] 1. Coated luminescent layer;

[0046] 2. Base material layer;

[0047] 3. Intelligent terminal protective shell. Embodiments of the present application

[0048] To explain the technical content, purposes and effects of the present application in detail, the following embodiments are combined with the drawings.

[0049] Research has found that the existing conventional luminous protective shell usually has a fluorescent mark attached to the existing protective shell to achieve the luminous function. The attached fluorescent mark is not wear-resistant and can cause the entire protective shell to be uneven and have a poor use feel. At present, although some researchers have considered using luminous yarn to prepare an intelligent terminal protective shell 3 to achieve the luminous function of the intelligent terminal protective shell 3, the luminous cloth prepared by the current luminous yarn has a granular feel on the surface, which can cause luminous intensity loss and is not conducive to the luminous effect of the intelligent terminal protective shell 3. At the same time, the luminous cloth produced by the previous luminous cloth preparation process has a strength and hardness that is not suitable for the intelligent terminal protective shell 3 on the market.

[0050] Therefore, referring to Figure 1, the present application discloses a luminous yarn preparation method, which specifically includes the following steps:

[0051] Step S10: preparing a base material layer 2 and a separation film;

[0052] Step S20: mixing a carrier resin, a luminescent inorganic substance, a plasticizer and an additive to obtain a luminescent raw paste;

[0053] Step S30: pouring the luminescent raw paste into a storage distribution cavity;

[0054] Step S40: continuously advancing the base material layer 2 to the winding direction by a roller to make the luminescent raw paste pass through the slit to the horizontal homogenization effect, so as to be coated on the base material layer 2 in the form of a liquid module with a certain thickness to form a coated luminescent layer 1;

[0055] Step S50: drying, cooling and solidifying the coated luminescent layer 1;

[0056] Step S60: winding the separation film and the coated luminescent layer 1 to obtain a wound luminescent roll;

[0057] Step S70: removing the separation film;

[0058] Step S80, the night light yarn is obtained by die cutting the rolled light emitting material.

[0059] The night light yarn obtained by the above steps adopts the light emitting original slurry mixed with the light emitting inorganic substance and the carrier resin, and is processed by a specific process, so that the yarn can emit bright and persistent light in the dark. Such light emitting performance not only improves the safety and visibility of the yarn, but also provides more possibilities for its application in fashion design; the selection of specific materials in the preparation process of the night light yarn makes the yarn not only maintain high brightness, but also has high strength and flexibility.

[0060] Meanwhile, the night light yarn preparation method designed by the present application adopts simple process steps, which include the preparation of the base material layer 2, the preparation of the light emitting original slurry, coating, drying, cooling, curing, lamination and die cutting, etc. The integration of these steps makes the whole preparation process easy to control and easy to realize large-scale production, which not only reduces the production cost, but also improves the production efficiency, so that the night light yarn has more market competitiveness.

[0061] It should be noted that in the above step S30, the light emitting original slurry is filled into the liquid storage distribution cavity, which can more uniformly distribute the light emitting original slurry on the base material layer 2 in the subsequent process, which helps to improve the quality of the light emitting material and ensure the consistency of the light emitting effect; at the same time, uniform distribution can also control the thickness of the light emitting original slurry, so that the thickness of the coating layer is more uniform and accurate; at the same time, it is also beneficial to reduce the waste of materials and greatly improve the production efficiency.

[0062] In addition, in the above step S60, a release film is also used to protect the coated light emitting layer 1 from external pollution and physical damage during drying and curing, which can prevent the coated light emitting layer 1 from adhering to the equipment or other parts of itself; so that the coated light emitting layer 1 is easier to carry and operate during processing, such as compounding, rolling, etc.; and ensure the compounding effect of the coated light emitting layer 1 and the base material layer 2 or the release film.

[0063] Further, the step S10 specifically uses a film material as the base material layer 2, and the base material layer 2 and the coated light emitting layer 1 use materials that are compatible at high temperature.

[0064] In the present application, the reason why the film material is used as the base layer 2 is that it has good flexibility, is easy to roll and fold, and is convenient for processing and use, and has certain strength and durability; wherein the film material is made of plastic, which can usually be PE (polyethylene), PU (polyurethane), PA (polyamide), PET (polyethylene terephthalate), PC (polycarbonate), PVC (polyvinyl chloride), COP (cyclic olefin polymer), TAC (triacetyl cellulose), PMMA (polymethyl methacrylate), OPP (oriented polypropylene) and other transparent or non-transparent materials.

[0065] Further, the step S20 is specifically: mixing 30%-70% carrier resin, 20%-70% luminescent inorganic substance and 0-10% plasticizer and auxiliary agent to obtain the luminescent original slurry.

[0066] Among them, the carrier resin component uses unsaturated polyester, acrylic resin, epoxy resin, phenolic resin, PET (polyethylene terephthalate), PVC (polyvinyl chloride), PP (polypropylene), PE (polyethylene), EVA (ethylene-vinyl acetate copolymer), PS (polystyrene), PMMA (polymethyl methacrylate), ABS (acrylonitrile, butadiene and styrene terpolymer), Silicone (silicone rubber), PU (polyurethane), TPU (thermoplastic polyurethane elastomer), PA (polyamide), PA6 (polyamide 6), PA66 (polyhexamethylene adipate), PC (polycarbonate) and other materials.

[0067] The luminescent substance contains one or more mixtures of rare earth silicates, aluminates, sulfides, etc.

[0068] The plasticizer can use dibutyl succinate, di-n-butyl phthalate, dioctyl succinate, dioctyl adipate, dioctyl phthalate, diisooctyl phthalate, tritolyl phosphate, alkyl sulfonate phenyl, cyclohexanone, etc.

[0069] The auxiliary agent can contain stabilizers, softeners, toughening agents, cold-resistant agents, lubricants, extenders, etc.

[0070] Among them, the carrier resin of the coated luminescent layer 1 can improve the thermal stability and chemical stability of the coated luminescent layer 1, in addition, it can give a beautiful gloss and texture, and the ratio is to ensure that the carrier resin can provide the necessary adhesion and stability, ensure the firm combination of the coated luminescent layer 1 and the base layer 2, and the mass fraction content of the carrier resin should not exceed 70%, otherwise it will be difficult to ensure the softness and comfort of the mobile phone shell body, and the mass fraction ratio can improve the stability in the processing process and the durability in the use process.

[0071] In addition, the luminescent inorganic substance has good luminescent efficiency, produces light of specific wavelength, has excellent chemical stability and thermal stability, and usually has long service life and low decay rate, so it can maintain stable luminescent performance for a long time. In addition, the luminescent inorganic substance is easy to manufacture, not flammable, and does not contain harmful substances, and different luminescent inorganic substances can realize luminescence of various colors, providing consumers with various choices. Therefore, the luminescent layer 1 selects the luminescent inorganic substance as the luminescent material, and the mass fraction content of the luminescent material should not be less than 20%, otherwise the required luminescent efficiency and brightness cannot be obtained. In addition, the mass fraction content is not more than 70%, so that the luminescent performance is guaranteed and the cost is controlled.

[0072] In addition, the plasticizer and the auxiliary agent are used as auxiliary materials for the luminescent layer 1, which improves the luminescent performance, durability and compatibility of the luminescent layer 1. However, due to the high cost of the plasticizer and the auxiliary agent, and the possibility of unnecessary problems during recycling, the mass fraction content of the plasticizer and the auxiliary agent is not recommended to exceed 10%.

[0073] The materials of the luminescent layer 1 and the substrate layer 2 have good compatibility, and can tightly penetrate between layers under high temperature conditions, achieving the effect of not delaminating.

[0074] Further, in the present application, the thickness of the above-mentioned substrate layer 2 can be preferably controlled to be ≥0.01mm and ≤0.05mm. This is because: controlling the thickness of the substrate layer 2 within this range can not only ensure the bonding strength with the luminescent layer 1, but also can obtain a certain tensile strength during subsequent weaving process.

[0075] Further, in the present application, the thickness of the above-mentioned luminescent layer 1 can be preferably controlled to be ≥0.05mm and ≤0.15mm. This is because: controlling the thickness of the luminescent layer 1 within this range can provide stable luminescent performance.

[0076] Further, in the preparation method of the luminescent yarn of the present application, the luminescent inorganic substance contained in the luminescent layer 1 can be uniformly distributed inside the carrier resin by pressure, so as to ensure uniform luminescence of the entire material surface or volume, maintain consistent luminescent effect, improve overall luminescent efficiency, and improve cost-effectiveness.

[0077] Specific embodiment 1:

[0078] In this embodiment 1, the substrate layer 2 uses a transparent PE material with a thickness of 0.05mm, and the isolation film uses a PET material with a thickness of 0.05mm.

[0079] The preparation method of the luminescent yarn of embodiment 1 is specifically as follows: the PVC is poured into a 45℃ heating container containing cyclohexanone and continuously stirred until the PVC is completely dissolved to obtain a stock solution; then 1000-mesh rare earth aluminates long-acting luminescent powder is mixed with the stock solution at a ratio of 40:50 and then added into a liquid storage distribution cavity. The roller shaft drives the PE base material layer 2 to move in the winding direction, and the luminescent stock solution is coated on the base material layer 2 in a certain amount of liquid film. After drying, cooling and solidification, the luminescent yarn is compounded with the release film to obtain a 0.15mm-thick luminescent coiled material. After 3 seconds of continuous ultraviolet light irradiation, the luminescent coiled material is observed by naked eye, and it can emit light in the dark for 30 minutes.

[0080] Embodiment 2:

[0081] In this embodiment 2, the base material layer 2 is made of white PET material with a thickness of 0.025mm. The release film is made of PET material with a thickness of 0.025mm.

[0082] The preparation method of the luminescent yarn of embodiment 2 is specifically as follows: the unsaturated polyester is poured into a container, then 600-mesh rare earth aluminates long-acting luminescent powder is uniformly mixed with the polyester at a ratio of 50:45, 2-4 parts of a curing agent is added, 1-2 parts of an accelerator is added after stirring, and then the mixture is fully mixed and added into a liquid storage distribution cavity. The roller shaft drives the base material layer 2 of the PET material to move in the winding direction, and the polyester luminescent slurry is coated on the base material layer 2 in a certain amount of liquid film. After drying, cooling and solidification, the luminescent yarn is compounded with the release film to obtain a 0.15mm-thick luminescent coiled material. The thickness of the coated luminescent layer 1 is 0.10mm, and after 3 seconds of continuous ultraviolet light irradiation, the luminescent coiled material is observed by naked eye, and it can emit light in the dark for 90-120 minutes.

[0083] Embodiment 3:

[0084] After obtaining the 0.15mm-thick luminescent coiled material, the distance between the circular knife blades is set to 1.50mm and 14 blades are arranged. After die cutting, 13 rolls of 1.50mm-wide and 0.15mm-thick luminescent yarns are obtained.

[0085] Referring to FIGS. 2-3, the cross section of the luminescent yarn prepared by the luminescent yarn preparation method of the present application is specifically a two-layer structure, which includes a base material layer 2 and a coated luminescent layer 1 arranged in layers.

[0086] Wherein, in the actual setting, the sum of the thickness of the base material layer 2 and the coated luminescent layer 1 can be preferably controlled to be greater than or equal to 0.1 mm and less than or equal to 0.16 mm; when the thickness of the night light yarn is greater than or equal to 0.16 mm, the light transmittance will be poor, which will reduce the luminescent efficiency; and when the thickness of the yarn is less than or equal to 0.1 mm, the overall night light yarn will be soft, which will affect the mechanical strength and the aesthetic appearance such as the luminescent brightness of the yarn when it is knitted; therefore, controlling the sum of the thickness of the base material layer 2 and the coated luminescent layer 1 of the night light yarn to be greater than or equal to 0.1 mm and less than or equal to 0.16 mm can not only improve the durability, but also balance the softness required for knitting and the protection required for the shell according to the research of the inventor, so that the night light yarn can be used to knit the mobile phone shell. The night light part of the mobile phone shell knitted by the night light yarn can improve the wear resistance of the night light part of the mobile phone shell compared with the method of directly pasting the night light sticker on the mobile phone shell, and the use feel and aesthetics are better.

[0087] Further, in the night light yarn, the diameter specification of the night light yarn can be specifically controlled to be less than or equal to 1500D or greater than or equal to 600D; the reason for controlling the diameter specification of the night light yarn is that this range can ensure that the shell of the smart terminal protective shell 3 prepared subsequently has sufficient thickness to withstand external pressure and internal stress, so as to ensure the stability of the structure and take into account the aesthetics of the mobile phone shell.

[0088] Further, in the night light yarn, the thickness of the base material layer 2 of the night light yarn can be specifically controlled to be less than the thickness of the coated luminescent layer 1; when the thickness of the base material layer 2 is less than the thickness of the coated luminescent layer 1, the product quality can be reduced, and the thicker functional layer can also provide better protection to prolong the service life. On the contrary, when the thickness of the base material layer 2 is greater than the thickness of the coated luminescent layer 1, the quality, aesthetics and functionality of the product will be damaged.

[0089] Wherein, in the night light yarn, the coated luminescent layer 1 can be specifically made of thermosetting resin and / or thermoplastic plastic, and rare earth luminescent material, and the base material layer 2 can be specifically made of plastic.

[0090] As shown in FIG. 2, the present application also discloses a smart terminal protective shell 3 made of the night light yarn prepared by the night light yarn preparation method of any of the above embodiments. The smart terminal protective shell 3 knitted from the night light yarn is more wear-resistant, the outer surface is smoother, and the strength, hardness, etc. are more suitable for the smart terminal protective shell 3 on the market.

[0091] Correspondingly, as shown in FIG. 4, the present application also discloses a preparation method of a smart terminal protective shell, which can be used to prepare the smart terminal protective shell 3 shown in FIG. 2, and specifically includes the following steps:

[0092] Step P10 weaving the luminescent yarn prepared by the luminescent yarn preparation method of the present application to form a luminescent fabric, wherein the luminescent yarn is prepared by any one of the luminescent yarn preparation methods described above;

[0093] Step P20 pre-impregnating the luminescent fabric in a polymer resin to obtain an impregnated fabric;

[0094] Step P30 laminating and molding the multiple layers of impregnated fabric;

[0095] Step P40 forming after hot pressing;

[0096] Step P50 cutting and painting the excess edges after forming.

[0097] In the present application, the smart terminal protective shell 3 obtained through the above steps can emit light in the dark, and this feature makes the prepared luminescent shell have a unique visual effect in the night or dark place, improving the recognition and safety of the product.

[0098] In the smart terminal protective shell 3, the luminescent fabric woven by the luminescent yarn is used as the base material of the shell, ensuring that the entire shell can emit light uniformly in the dark, increasing the aesthetics and practicality of the product; the impregnated fabric obtained by pre-impregnating the luminescent fabric in a polymer resin not only enhances the strength and durability of the shell, but also improves its waterproof, dustproof and other properties.

[0099] In the present application, due to the impregnation treatment of the polymer resin in step P20, this impregnation treatment can make the connection between the luminescent yarns more closely, reducing the friction and wear between the yarns and prolonging the service life of the shell; at the same time, in step P30, the multiple layers of impregnated fabric are laminated and molded, so that the shell can be formed according to the design requirements, meeting the requirements of various shapes and sizes.

[0100] Correspondingly, in the above step P40 of the present application, the process of forming after hot pressing can ensure the dimensional stability of the shell and the shape is not deformed, while improving the precision and quality of the product; at the same time, in step P50, the excess edges after forming are cut, making the appearance of the shell more neat and beautiful. The painting process not only enhances the aesthetics of the shell, but also further improves its waterproof, scratch-resistant and other properties, protecting the internal equipment from the external environment.

[0101] Further, in the present application, in step P40, the coated luminescent layer 1 of the night glow yarn and the substrate layer 2 are bonded by heat pressing, so that the coated luminescent layer 1 and the substrate layer 2 can penetrate each other. This heat pressing process can melt or soften the adhesive or resin between the two at high temperature, to enhance the adhesion between the two, improve the interface performance between the two, and accurately control the thickness of the composite material to meet the use requirements of the mobile phone shell.

[0102] Further, as shown in FIG. 5, in the preparation method of the intelligent terminal protective shell of the present application, step P40 can specifically refer to FIG. 5, and this step P40 specifically includes:

[0103] The temperature is set to 70-90℃, and the molding is performed for 20-40 minutes; then the temperature is set to 100-120℃, and the molding is performed for 1.5-2.5 hours;

[0104] Or, the temperature is set to 120-150℃, and the molding is performed for 30-90 minutes.

[0105] In the above technical solution of the present application, when actually performing step P40, the operator can choose two ways: (1) the temperature is set to 70-90℃, and the molding is performed for 20-40 minutes; then the temperature is set to 100-120℃, and the molding is performed for 1.5-2.5 hours; (2) the temperature is set to 120-150℃, and the molding is performed for 30-90 minutes.

[0106] Among them, by first keeping at a lower temperature (70-90℃) for a period of time (20-40 minutes), the high molecular resin begins to gradually soften and flow, penetrating into every corner of the impregnated cloth, ensuring the uniformity of resin distribution, and then the heat pressing process at a higher temperature (100-120℃) for a long time (1.5-2.5 hours) ensures the complete curing of the resin and the close combination between the night glow yarn and the resin. This uniform curing helps to improve the overall strength and durability of the shell; during the heat pressing process, precise temperature and time control can ensure that the night glow effect of the night glow yarn is not damaged.

[0107] It should be noted that through appropriate heat pressing treatment, the night glow material in the night glow yarn is uniformly distributed and fixed, so that the shell can emit bright and persistent light in a dark environment, maintaining its unique night glow effect; the heat pressing treatment at high temperature can eliminate the residual stress and bubbles in the impregnated cloth, so that the shell has better dimensional stability and flatness after forming. This helps to ensure the close fit between the shell and the protected device, providing better protection effect; the completely cured high molecular resin provides a solid matrix for the shell, making the shell have high wear resistance, impact resistance and scratch resistance.

[0108] Further, in step P10, the luminescent fabric is woven by one or more of plain weave and / or twill weave, etc. of the luminescent yarn and synthetic fiber.

[0109] In the present application, the smart terminal protective shell 3 is at least partially woven by the luminescent yarn for weaving the shell, and the woven luminescent yarn not only provides good structural strength, but also is very important for reducing the mass, and the aesthetic and customization can meet the needs of different customers

[0110] That is, the smart terminal protective shell 3 is woven by the luminescent synthetic fiber mixed fabric, not only because of its aesthetic, durability, but also its light weight, good stability; the luminescent synthetic fiber mixed fabric is woven by one or more of plain weave and / or twill weave, etc. of the yarn for weaving the shell and synthetic fiber, and the design makes the woven yarn without gaps, which can create different texture effects and increase the aesthetic, and the mixed weaving technology can enhance the mechanical properties such as tensile and tear resistance of the fabric, and improve the overall durability of the fabric.

[0111] Specific embodiment 4:

[0112] In order to ensure that the woven yarn has no gaps, the luminescent yarn and 1500D aramid fiber are woven by plain weave mixed fabric, and the luminescent aramid fiber mixed fabric is pre-impregnated with high molecular resin (such as epoxy resin, phenolic resin, polyester resin, polycarbonate, thermoplastic polyurethane elastomer, etc.). After stacking multiple layers of pre-impregnated fabric, mold pressing, autoclave forming, cutting, painting and other post-processing procedures are performed on the edges of the formed shell to obtain the finished product shell.

[0113] Specific embodiment 5:

[0114] The woven fabric is pre-impregnated with epoxy resin and then autoclave formed, the forming temperature is set to 80°C, and after mold pressing for 30 minutes, the forming temperature is set to 110°C, and mold pressing for 2 hours, then the formed shell is cut and sprayed to obtain the protective shell.

[0115] Specific embodiment 6:

[0116] The woven fabric is pre-impregnated with epoxy resin and then mold pressed, at a temperature of 120-150°C, mold forming for 30-90 minutes, then the formed shell is cut and sprayed to obtain the protective shell.

[0117] In summary, the preparation method of the noctilucent yarn, the intelligent terminal protective shell and the preparation method thereof adopt the noctilucent yarn weaving technology, combine with the impregnation treatment of the high molecular resin, and through the laminated molding hot pressing forming and edge cutting of the multi-layer impregnated cloth, so that the noctilucent yarn prepared by the preparation method has a smooth surface and little loss of noctilucent intensity. Based on the noctilucent yarn, the application further prepares a new intelligent terminal protective shell which can emit noctilucent light based on the coating light-emitting layer of the noctilucent yarn, and compared with the fluorescent mark pasted on the mobile phone shell, the intelligent terminal protective shell is more wear-resistant, has a smoother appearance, and has a good use feeling, and has good popularization prospect and application value.

[0118] The above description is only an embodiment of the application, and does not limit the patent scope of the application, and any equivalent transformation or direct or indirect application in the related technical field based on the content of the specification and drawings is also included in the patent protection scope of the application.

Claims

1. A protective case for a smart terminal, characterized by, The intelligent terminal protective shell is at least partially woven by the luminescent yarn, and the luminescent yarn comprises a coated luminescent layer.

2. The intelligent terminal protective case according to claim 1, wherein, The luminescent yarn has a two-layer structure, i.e. a base material layer and a coated luminescent layer arranged in a stack; the thickness of the base material layer and the coated luminescent layer is greater than or equal to 0.1 mm and less than or equal to 0.16 mm.

3. The intelligent terminal protective case according to claim 1, wherein, The diameter of the luminescent yarn is less than or equal to 1500D or greater than or equal to 600D.

4. The intelligent terminal protective case according to claim 2, wherein, The thickness of the base material layer is greater than or equal to 0.01 mm and less than or equal to 0.05 mm; and the thickness of the coated luminescent layer is greater than or equal to 0.05 mm and less than or equal to 0.15 mm.

5. The intelligent terminal protective case of claim 2, wherein, The thickness of the base material layer of the luminescent yarn is less than the thickness of the coated luminescent layer.

6. A method of preparing a noctilucent yarn, characterized in that, The method comprises the following steps: Step S10: preparing a base material layer and a separation film; Step S20: mixing a carrier resin, a luminescent inorganic substance, a plasticizer and an additive to obtain a luminescent original paste; Step S30: filling the luminescent original paste into a storage distribution cavity; Step S40: continuously advancing the base material layer to a winding direction by a roller to make the luminescent original paste pass through a slit to be uniformly coated on the base material layer in a liquid mold shape with a certain thickness to form a coated luminescent layer; Step S50: drying, cooling and solidifying the coated luminescent layer; Step S60: winding the separation film and the coated luminescent layer to obtain a wound luminescent roll; Step S70: removing the separation film; Step S80: die cutting the wound luminescent roll to obtain the luminescent yarn.

7. The method for preparing luminescent yarn according to claim 6, characterized in that, In step S10, a film material is used as the base material layer, and the base material layer and the coated luminescent layer are made of materials compatible at high temperatures.

8. The method of claim 6, wherein the night glow yarn is prepared by the steps of: In step S20, 30%-70% of the carrier resin, 20%-70% of the luminescent inorganic substance and 0-10% of the plasticizer and the additive are mixed to obtain the luminescent original paste. ​ 9. The method for preparing luminescent yarn as described in claim 6, characterized in that, The luminescent inorganic substance contained in the coated luminescent layer is inside the carrier resin by pressure.

10. A method of manufacturing a protective case for a smart terminal, the method comprising: providing a first material layer; providing a second material layer; and coupling the first material layer to the second material layer. The method comprises the following steps: Step P10: weaving the luminescent yarn prepared by the method of any one of claims 6 to 9 to form a luminescent fabric; Step P20: impregnating the luminescent fabric in a polymer resin to obtain an impregnated fabric; Step P30: laminating multiple layers of the impregnated fabric and then molding; Step P40: hot pressing to form; Step P50: cutting and painting the excess edges of the formed product.

11. The method of claim 10, wherein the method further comprises: In step P40, the coated luminescent layer and the base material layer of the luminescent yarn penetrate each other during the hot pressing process.

12. The method of claim 10, wherein step P40 is as follows: setting the temperature to 70-90℃ and molding for 20-40 minutes, and then setting the temperature to 100-120℃ and molding for 1.5-2.5 hours; or setting the temperature to 120-150℃ and molding for 30-90 minutes.

13. The method of claim 10, wherein in step P10, the luminescent fabric is woven by mixing the luminescent yarn with synthetic fibers in a plain weave and / or a twill weave. ​

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