Polyamide solution, preparation method of polyamide solution and manufacturing method of simulated artificial leather using polyamide solution

Abstract

The invention discloses a polyamide solution and a preparation method thereof, and a manufacturing method of an artificial leather applying the polyamide solution, the polyamide solution comprises alcohol-soluble polyamide and a solvent, and the volume ratio of the alcohol-soluble polyamide to the solvent is 1: 70-1: 120. According to the polyamide solution disclosed by the invention, the polyamide solution comprises the alcohol-soluble polyamide and the solvent, and the volume ratio of the alcohol-soluble polyamide to the solvent is (1: 70)-(1: 120), so that the polyamide solution can well meet the production and use requirements of products such as artificial leather and the like, and the production cost of the products such as the artificial leather and the like can be well reduced.

Description

Technical Field

[0001] The invention relates to the technical field of solution preparation and special-effect makeup, in particular to a polyamide solution and a preparation method thereof, and a method for making simulated fake leather using the same. Background Art

[0002] In the film and television industry and the medical beauty industry, in order to meet the needs of styling and beauty, artificial skin is often used for special effects makeup to obtain the desired appearance, such as the use of silicone prosthetic noses in the film and television industry, and the use of artificial prosthetic noses in medical beauty to modify nose defects to achieve cosmetic effects, etc.

[0003] At present, in the process of processing and manufacturing simulated fake leather, it is usually necessary to spray an imported plastic solution on the molding surface of the silicone mold so that the surface of the simulated fake leather after molding can be in good contact with the skin and the edge dissolution can achieve a natural transition between the fake leather and the skin surface to meet the use requirements of the simulated fake leather. However, since the plastic solution is an imported material, the price is relatively expensive, which makes the production cost of products such as simulated fake leather using this material relatively high. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a polyamide solution, which can well meet the use requirements of simulated fake leather and the like and reduce the production cost of products such as simulated fake leather and the like.

[0005] The invention also provides a preparation method for preparing the polyamide solution.

[0006] The invention also provides a method for making simulated fake leather using the polyamide solution.

[0007] The polyamide solution according to the first aspect of the present invention comprises: an alcohol-soluble polyamide and a solvent, wherein the volume ratio of the alcohol-soluble polyamide to the solvent is 1:70-1:120.

[0008] According to the polyamide solution of the present invention, by being configured to include alcohol-soluble polyamide and solvent, and the volume ratio of the alcohol-soluble polyamide to the solvent is set to 1:70-1:120, the polyamide solution can well meet the production and use of products such as simulated fake leather, so that the production cost of products such as simulated fake leather can be well reduced.

[0009] In some embodiments of the present invention, the solvent is an alcohol solvent.

[0010] In one embodiment of the present invention, the solvent is ethanol, and the volume ratio of the alcohol-soluble polyamide to the solvent is 1:70-1:90.

[0011] The preparation method according to the second aspect of the present invention is used to prepare the polyamide solution according to the first aspect of the present invention, and the preparation method comprises: adding polyamide particles and a solvent into a container; heating a mixture of polyamide particles and the solvent at a first preset temperature and stirring; and obtaining a polyamide solution.

[0012] According to the preparation method of the present invention, the polyamide solution of the first aspect can be prepared and obtained efficiently and smoothly by being used to prepare the polyamide solution of the first aspect embodiment, thereby ensuring the quality of the polyamide solution to meet the production needs of the polyamide solution.

[0013] In some embodiments of the present invention, the first preset temperature ranges from 180°C to 220°C.

[0014] According to the third aspect of the present invention, the method for making simulated fake leather uses the polyamide solution according to the first aspect of the present invention, and the method for making simulated fake leather comprises: applying a release agent on the molding surface of the mold; spraying the polyamide solution on the molding surface and controlling it to dry to form a film; injecting platinum silicone into the mold in a quantitative manner and closing the mold; heating the closed mold at a second preset temperature for a first preset time; the closed mold naturally cools down to room temperature; and opening the mold to take out the simulated fake leather product.

[0015] According to the method for making simulated fake leather of the present invention, by applying the polyamide solution of the first aspect, the production cost of the simulated fake leather is well reduced and the use of the simulated fake leather is made safer.

[0016] In some embodiments of the present invention, the second preset temperature ranges from 60°C to 220°C, the first preset time ranges from 20min to 40min, and / or the simulated fake leather is fake leather for the nose area, and the injection amount of the platinum silicone is 7g to 9g.

[0017] In some embodiments of the present invention, the platinum silica gel is addition-type silica gel, and the ratio of component A to component B in the platinum silica gel is 1:1, wherein the ratio of the platinum catalyst in the component B to the platinum silica gel ranges from 1:100 to 1:1000.

[0018] In some embodiments of the present invention, the polyamide solution is sprayed 6-10 times, the drying time of the polyamide solution is 5 min-10 min, and / or the film thickness of the polyamide solution is 200 μm-700 μm.

[0019] In some embodiments of the present invention, the mold is made by three-dimensional printing technology.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a flow chart of a preparation method according to an embodiment of the present invention;

[0022] Figure 2 is a flow chart of a method for making simulated fake leather according to an embodiment of the present invention;

[0023] Figure 3 2 is a schematic diagram of a mold when the simulated leather is a nose area leather according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] Reference below Figure 1 A polyamide solution according to an embodiment of the first aspect of the present invention is described.

[0026] refer to Figure 1 As shown, the polyamide solution according to the first embodiment of the present invention includes: alcohol-soluble polyamide and solvent, and the volume ratio of the alcohol-soluble polyamide to the solvent is 1:70-1:120.

[0027] In the present embodiment, a polyamide solution is disclosed, the polyamide solution includes an alcohol-soluble polyamide and a solvent. Polyamide is also called nylon, which is a type of polymer containing a repeating amide group, and has good mechanical properties, wear resistance and chemical stability. Alcohol-soluble polyamide refers to a polyamide that can be dissolved in an alcohol solvent. In some embodiments, the solvent can be an alcohol solvent. It should be noted that the alcohol solvent here can be reasonably selected as needed. For example, when the polyamide solution is used for the production of simulated fake leather and other places that need to contact with human skin, the solvent can be selected from alcohol solvents with low toxicity or non-toxic, such as ethanol, n-propanol, propylene glycol, etc., and when the polyamide solution is used for places that are not often in contact with the human body, such as article packaging, anti-scratch protective films, etc., the solvent can also be selected as needed. A certain toxic or low toxic or non-toxic alcohol solvent. In one embodiment, since the alcohol-soluble polyamide has a certain ability to dissolve in water, the polyamide solution can also select water as a solvent.

[0028] In this embodiment, the volume ratio of the alcohol-soluble polyamide to the solvent is 1:70 to 1:120. For example, the volume ratio of the alcohol-soluble polyamide to the solvent can be 1:70, 1:72, 1:73, 1:75, 1:80, 1:81, 1:82, 1:85, 1:90, 1:94, 1:99, 1:110, 1:112, 1:116, 1:120, and the like.

[0029] The polyamide solution of this embodiment can have excellent mechanical properties, wear resistance, chemical stability and film-forming properties, so that the film formed by spraying the polyamide solution has excellent tension, tensile adhesion, wear resistance and structural stability. The volume ratio of alcohol-soluble polyamide to solvent is set to 1:70-1:120, so that when the polyamide solution is produced, while ensuring that there is enough alcohol-soluble polyamide component in the polyamide solution to maintain the good performance of the polyamide solution, a larger amount of polyamide solution can be obtained with the same volume of alcohol-soluble polyamide during the production and preparation of the polyamide solution, thereby reducing the production and use cost of the polyamide solution to a certain extent.

[0030] For example, when the polyamide solution is used in the production of simulated fake leather, the polyamide solution can replace the original imported plastic solution, thereby greatly reducing the raw material cost of the simulated fake leather and reducing the production cost of the simulated fake leather. At the same time, the solvent can be non-toxic or low-toxic solvents such as ethanol and water. Compared with the original imported plastic solution, the polyamide solution in this embodiment is more non-toxic and harmless, making the use of simulated fake leather safer and healthier for the human body.

[0031] It is understandable that during the use of the simulated fake leather, the edge of the simulated fake leather in contact with the skin needs to be processed to obtain a natural transition. For example, when the simulated fake leather uses the original imported plastic solution, acetone needs to be used to dissolve the edge after the plastic solution forms a film. Acetone has certain toxicity and has hazards such as irritation and damage to the skin, thereby affecting the health and safety of the user. When the polyamide solution in this embodiment is used in the production and use of the simulated fake leather, the solvent selects a non-toxic alcohol solvent or water. For example, when the solvent selects ethanol, when the edge of the simulated fake leather is processed during use, the user can use low-proof alcohol to dissolve the edge of the simulated fake leather. The dissolution is convenient, which well avoids damage to the user's skin and makes the use of the simulated fake leather safer.

[0032] According to the polyamide solution of the embodiment of the present invention, by being configured to include alcohol-soluble polyamide and a solvent, and the volume ratio of the alcohol-soluble polyamide to the solvent is set at 1:70-1:120, the polyamide solution can well meet the production and use of products such as simulated fake leather, so that the production cost of products such as simulated fake leather can be greatly reduced.

[0033] In some embodiments of the present invention, the solvent is an alcohol solvent.

[0034] In this embodiment, the solvent is set to an alcohol solvent, which can meet the production needs of the polyamide solution. Alcohol solvents such as ethanol have good volatility, so that the polyamide solution can form the required film material more quickly when used. For example, when the polyamide solution is used in the production of simulated fake leather, the polyamide solution can be quickly dried to form a film after spraying, so that the simulated fake leather can enter the next production process.

[0035] In one embodiment of the present invention, the solvent is ethanol, and the volume ratio of the alcohol-soluble polyamide to the solvent is 1:70-1:90.

[0036] In this embodiment, the solvent is set to ethanol, which has low toxicity and high volatility, making the polyamide solution safer and more environmentally friendly when used. For example, when used in the production of simulated fake leather, it is convenient for rapid film formation, thereby greatly improving the efficiency of the production of simulated fake leather.

[0037] In this embodiment, the volume ratio of the alcohol-soluble polyamide to the solvent, that is, the volume ratio of the alcohol-soluble polyamide to ethanol is set to 1:70-1:90, for example, the volume ratio of the alcohol-soluble polyamide to ethanol can be 1:70, 1:72, 1:73, 1:75, 1:77, 1:80, 1:81, 1:82, 1:85, 1:90, etc., so that the polyamide solution can have good film-forming properties and adhesion, and the polyamide solution can be quickly controlled to dry and form a film, meeting the manufacturing and production needs of simulated leather and the use needs of other products, such as the molding of protective films, etc. Optionally, the volume ratio of the alcohol-soluble polyamide to ethanol can be 1:82.

[0038] Reference below Figure 1 The preparation method according to the embodiment of the second aspect of the present invention is described.

[0039] like Figure 1 As shown, the preparation method according to an embodiment of the present invention is used to prepare a polyamide solution according to an embodiment of the first aspect of the present invention, and the preparation method includes: adding polyamide particles and a solvent into a container; heating a mixture of polyamide particles and the solvent at a first preset temperature and stirring; and obtaining a polyamide solution.

[0040] When preparing the polyamide solution in this embodiment, polyamide particles and a solvent are first added into a container. For example, the polyamide particles are alcohol-soluble polyamide particles, and the solvent is ethanol. The amounts of polyamide particles and the solvent can be set according to the amount of polyamide solution to be obtained and the volume ratio of the alcohol-soluble polyamide to the ethanol. The container can be reasonably selected according to the needs of the preparation. For example, when preparing a small amount of polyamide solution, the container can be a beaker.

[0041] The mixture of polyamide particles and solvent is heated and stirred at a first preset temperature. The first preset temperature may refer to a temperature that facilitates the rapid dissolution of polyamide particles and does not produce unnecessary side reactions. The preparation personnel may begin to slowly stir the mixture during the process of adding polyamide particles and solvent into the container so that the polyamide particles and solvent can be mixed more quickly and evenly to fully contact and dissolve.

[0042] When the added polyamide particles are completely dissolved in the solvent, a polyamide solution is obtained.

[0043] According to the preparation method of the embodiment of the present invention, by being used to prepare the polyamide solution of the first embodiment above, the polyamide solution can be efficiently and smoothly prepared and obtained, thereby ensuring the quality of the polyamide solution to meet the production needs of the polyamide solution.

[0044] In some embodiments of the present invention, the first preset temperature may range from 180°C to 220°C.

[0045] In this embodiment, the value range of the first preset temperature is set to 180°C to 220°C, so that the alcohol-soluble polyamide particles can be quickly and stably dissolved with the solvent within a suitable temperature range, making the preparation of the polyamide solution more efficient. For example, the first preset temperature can be 180°C, 185°C, 190°C, 200°C, 210°C, 211°C, 220°C, etc.

[0046] Reference below Figure 2 and Figure 3 The method for manufacturing the simulated fake leather according to the third aspect of the present invention is described.

[0047] like Figure 2 and Figure 3 As shown, the method for making simulated fake leather according to an embodiment of the present invention uses the polyamide solution according to the first aspect of the embodiment of the present invention, and the method for making simulated fake leather includes: applying a release agent on the molding surface of the mold; spraying the polyamide solution on the molding surface and controlling it to dry to form a film; injecting platinum silicone into the mold in a quantitative manner and closing the mold; heating the mold after closing at a second preset temperature for a first preset time; the mold after closing is naturally cooled to room temperature; opening the mold and taking out the simulated fake leather product.

[0048] When the simulated fake leather is made, a release agent is applied to the mold surface of the mold so that the simulated fake leather after molding can be easily removed from the mold. The polyamide solution is sprayed on the mold surface and controlled to form a film. Here, spraying the polyamide solution on the mold surface means spraying on the molding surface coated with the release agent. After spraying, the polyamide solution can be naturally air-dried to evaporate the solvent, thereby forming a polyamide film on the film-forming surface. The thickness of the release agent can be reasonably set according to the demoulding needs. Optionally, the release agent can be vaseline.

[0049] Platinum silicone is quantitatively injected into the mold and the mold is closed. Platinum silicone refers to silicone rubber that uses platinum as a catalyst. It has the characteristics of high transparency, low shrinkage and biocompatibility. Platinum silicone belongs to addition-type silicone rubber. When platinum silicone is injected into the mold, the injection amount of platinum silicone can be determined according to the amount of simulated fake leather to be manufactured, so that the injection amount of platinum silicone meets the molding needs of simulated fake leather. After the platinum silicone is injected into the mold, the mold is closed. For example, the female mold and the male mold of the mold are pressed together by fixing parts or devices to form a stable model space, so that the platinum silicone forms the desired shape of simulated fake leather in the mold.

[0050] The mold is heated at a second preset temperature for a first preset time, and the mold injected with platinum silicone is heated at the second preset temperature so that the platinum silicone in the mold can be quickly solidified. After the mold is heated for the first preset time, the mold is naturally cooled to room temperature to facilitate the operation of opening the mold and taking it out. After the mold cools to room temperature, the mold is opened to obtain a finished product of simulated fake leather.

[0051] In this embodiment, the simulated fake leather is produced by using a polyamide solution. The polyamide solution can use a low-toxic or non-toxic solvent such as ethanol. For example, when the solvent is ethanol, a low-degree alcohol can be used to dissolve the edges of the simulated fake leather during use, thereby effectively preventing human skin from contacting toxic substances such as acetone, making the use of the simulated fake leather healthier and safer.

[0052] It is understandable that, in the current production process of simulated leather, imported plastic solution is usually used to form the surface film of simulated leather, which is expensive and needs to be dissolved with acetone during the dissolving operation, which is harmful to human health. In this embodiment, by using polyamide solution to replace the original imported plastic solution, the manufacturing cost of simulated leather is greatly reduced, and the use of simulated leather is safer.

[0053] According to the method for making simulated fake leather in the embodiment of the present invention, by applying the polyamide solution of the first embodiment, the production cost of the simulated fake leather is greatly reduced and the use of the simulated fake leather is made safer.

[0054] In some embodiments of the present invention, the second preset temperature may be in the range of 60° C. to 220° C., and the first preset time may be in the range of 20 min to 40 min.

[0055] In this embodiment, the value range of the second preset temperature is set to be greater than or equal to 60°C and less than or equal to 220°C, so that the platinum silicone in the mold can be stably cured at a suitable temperature to meet the production requirements of simulated leather. For example, the second preset temperature can be 60°C, 70°C, 72°C, 85°C, 100°C, 120°C, 150°C, 200°C, 201°C, 220°C, etc.

[0056] In this embodiment, the value range of the first preset time is set to be greater than or equal to 20 minutes and less than or equal to 40 minutes, so that the platinum silicone in the mold can be stably and reliably cured and formed, and the heating time of the mold is shorter, so that the production efficiency of the simulated fake leather is higher. For example, the first preset time can be 20 minutes, 22 minutes, 23 minutes, 27 minutes, 30 minutes, 35 minutes, 40 minutes, etc. The second preset temperature when the mold is heated and the first preset time of heating can be flexibly adjusted and matched according to actual needs to meet the curing needs of the simulated fake leather and the requirements of the production efficiency of the simulated fake leather.

[0057] In some embodiments of the present invention, the simulated fake leather may be fake leather for the nose area, and the injection amount of platinum silicone is 7 grams to 9 grams.

[0058] In this embodiment, the simulated fake leather is set as the fake leather in the nose area, and the simulated fake leather can be used for special effects makeup or beauty treatment of the human nose, and the mold is a mold of the nose area. In this embodiment, the injection amount of platinum silicone is set to 7 grams to 9 grams, which can meet the amount requirements of the fake leather in the nose area, so that the shape and size of the manufactured simulated fake leather product meet the requirements. For example, the injection amount of platinum silicone can be set to 7 grams, 7.2 grams, 7.5 grams, 8 grams, 9 grams, etc. according to the simulation requirements of the nose area.

[0059] In some embodiments of the present invention, the second preset temperature may range from 60°C to 220°C, the first preset time may range from 20min to 40min, the simulated fake leather is fake leather in the nose area, and the injection amount of platinum silicone may be 7g to 9g.

[0060] In this embodiment, the value range of the second preset temperature is set at 60°C-220°C, the value range of the first preset time is set at 20min-40min, the simulated fake leather is fake leather in the nose area, and the injection amount of platinum silicone is set to 7g-9g, so that the production method of this embodiment can stably, reliably and smoothly produce the simulated fake leather in the nose area, and the production efficiency of the simulated fake leather is relatively high. During the production process of the simulated fake leather, the injection amount of platinum silicone, the heating temperature and heating time of the mold can be flexibly and conveniently adjusted as needed.

[0061] In some embodiments of the present invention, the platinum silicone may be an addition-type silicone, in which the ratio of component A to component B is 1:1, wherein the ratio of the platinum catalyst in component B to the platinum silicone may range from 1:100 to 1:1000.

[0062] In this embodiment, the ratio of component A to component B in platinum silica gel is set to 1:1, which is convenient for the preparation and use of platinum silica gel, wherein the ratio of platinum catalyst in component B to platinum silica gel is set to 1:100-1:1000, where the ratio refers to the mass ratio of platinum catalyst to platinum silica gel, and the ratio of platinum catalyst to platinum silica gel is set to 1:100-1:1000, so that component A and component B of platinum silica gel can have sufficient curing time after mixing so that the production personnel have sufficient time to perform operations such as injection of platinum silica gel, and the platinum silica gel can be cured more quickly to improve the efficiency of the production of simulated fake leather. For example, the ratio of platinum catalyst to platinum silica gel can be 1:100, 1:150, 1:175, 1:176, 1:200, 1:500, 1:600, 1:750, 1:900, 1:1000, etc., and the ratio of platinum catalyst to platinum silica gel can be reasonably set as needed. Optionally, the ratio of platinum catalyst to platinum silica gel can be 1:1000.

[0063] In some embodiments of the present invention, the polyamide solution may be sprayed 6-10 times, and the drying time of the polyamide solution may be 5 min-10 min.

[0064] In this embodiment, the number of spraying of the polyamide solution is set to 6-10 times, and the drying time of the polyamide is 5min-10min. Multiple spraying can make the polyamide solution form a uniform and thick polyamide film after drying, so that the thickness of the polyamide film formed after the polyamide solution is dried on the molding surface can meet the production and molding needs of the simulated fake leather, so that the polyamide film can better cover the molding surface of the mold with a complex shape, so that the manufactured simulated fake leather can better fit the human skin and form an appearance shape that meets the needs.

[0065] The drying time of the polyamide solution is 5-10 minutes. The shorter the drying time of the polyamide, the faster the production of the simulated leather can proceed to the next step, making the production of the simulated leather more efficient. For example, the number of spraying of the polyamide solution can be set to 6, 7, 8, 9 or 10 times according to the different single spraying amounts or the different polyamide content in the polyamide solution, and the drying time of the polyamide solution can be set to 5 minutes, 6 minutes, 7 minutes, 7.5 minutes, 8 minutes, 9 minutes, 10 minutes, etc. according to the different spraying times, so that the polyamide solution can be completely dried on the mold surface.

[0066] In some embodiments of the present invention, the film thickness of the polyamide solution may be 200 μm-700 μm.

[0067] In this embodiment, the film thickness of the polyamide solution is set to be greater than or equal to 200 μm and less than or equal to 700 μm, so that the polyamide film formed after drying can have sufficient thickness to maintain good stretching and adhesion properties and tension properties, so as to meet the use needs of the simulated fake leather and human skin, and avoid the polyamide film being too thick to affect the realism of the simulated fake leather, so that the simulated fake leather finished product can better meet the use needs of users, and the simulated fake leather can better meet the actual use needs. For example, the film thickness of the polyamide solution can be 200 μm, 220 μm, 300 μm, 350 μm, 360 μm, 366 μm, 400 μm, 500 μm, 700 μm, etc.

[0068] In some embodiments of the present invention, the polyamide solution may be sprayed 6-10 times, the drying time of the polyamide solution may be 5 min-10 min, and the film thickness of the polyamide solution may be 200 μm-700 μm.

[0069] In this embodiment, by setting the spraying times of the polyamide solution to 6-10 times, the drying time to 5min-10min, and the film thickness of the polyamide solution to 200μm-700μm, the production of simulated fake leather can be made more efficient, and the formed polyamide film can form a smooth and uniform film layer on the surface of the simulated fake leather, making the appearance of the simulated fake leather more realistic, and the polyamide film can play a good protective role on the simulated fake leather, so that the simulated fake leather can maintain a good appearance after multiple uses, thereby making the simulated fake leather finished product more practical.

[0070] In one embodiment of the present invention, the film thickness of the polyamide solution can be 300 μm-500 μm. In this way, the polyamide solution can have good mechanical properties and flexibility after drying, so that the polyamide film can better meet the use needs of simulated leather. For example, the film thickness of the polyamide solution can be 300 μm, 350 μm, 370 μm, 450 μm, 500 μm, etc.

[0071] In some embodiments of the present invention, reference Figure 3 As shown, the mold can be made by 3D printing technology.

[0072] In this embodiment, the mold is processed using three-dimensional printing technology, which is more convenient, easy and efficient than the production of traditional plaster molds. For example, when the simulated fake skin is fake skin in the nose area, the mold of this embodiment can use high-temperature resistant materials for three-dimensional printing of the mold (i.e., 3D printing), so that the original human face nose area is modeled and printed as a positive mold, and the nose shape is trimmed and adjusted to a perfect state based on the original human face nose area, and then modeled and printed as a negative mold, so that the simulated fake skin for the nose produced using the mold can be well attached to the user's nose position and form a perfect nose shape.

[0073] It is understandable that the production of traditional plaster molds often requires tedious and complicated steps, such as applying an alginate plaster bandage to the human face to take a mold, pouring plaster into the mold to obtain a positive mold, manually carving and polishing the positive mold using clay to obtain a trimmed nose, and then injecting plaster into the mold to form a negative mold, as well as removing the clay, etc. This makes the production of the mold very troublesome and time-consuming, and it is inconvenient to close the mold, which makes the production of simulated fake skin troublesome and inefficient.

[0074] In this embodiment, the mold is set to be processed by three-dimensional printing technology, so that the production and manufacturing of the mold is more convenient and faster, the manpower consumption is greatly reduced, and the mold is more durable. The size matching of the female mold and the male mold is more precise, which makes it more convenient to close the mold, and the production of simulated fake leather is more efficient and the finished product is more reliable. When the mold is processed and manufactured using high-temperature resistant materials, compared with traditional gypsum molds that are prone to cracking at high temperatures and thus need to be cured in a traditional greenhouse for 8 to 12 hours, the mold of this embodiment can be heated at a higher temperature, so that the mold after closing can perform the platinum silicone curing operation within a higher temperature range, so that the heating and curing time in the process of making simulated fake leather is greatly shortened, thereby further improving the production efficiency of simulated fake leather.

[0075] The following will refer to Figure 1-Figure 3 A method for making simulated leather according to a specific embodiment of the present invention is described.

[0076] like Figure 1-Figure 3As shown, the production staff applies a release agent, which is vaseline, on the molded surfaces of the female and male molds of the mold. The production staff then uses a spray gun to spray the polyamide solution on the film-forming surfaces of the female and male molds. Each molded surface is sprayed 6-10 times as needed. After spraying, it is controlled to dry for 5-10 minutes, so that the polyamide solution can stably form a 300μm-500μm film layer on the molded surface. The prepared platinum silicone is injected into the female mold, and the injection amount is 7 grams to 9 grams. The male mold is buckled onto the female mold to close the mold. The production staff puts the closed mold into a heating device for heating. For example, the mold can be placed in an oven for heating at a temperature of 220°C. According to the curing condition of the platinum silicone in the mold, it is heated for 20 minutes to 40 minutes and then taken out. After the mold naturally cools down to room temperature, for example, to 25°C-50°C, the production staff opens the mold and takes out the finished product.

[0077] The platinum silica gel in this embodiment is prepared with a ratio of 1:1 between component A and component B, wherein the ratio of platinum catalyst to platinum silica gel is 1:1000. The polyamide solution used in this embodiment is prepared by dissolving alcohol-soluble polyamide particles in ethanol, wherein the volume ratio of alcohol-soluble polyamide to solvent is 1:70-1:90, and ethanol can be 95% medical ethanol. The preparation method of the polyamide solution is as follows: alcohol-soluble polyamide particles are added into a container, such as a beaker, ethanol is added into the beaker and mixed with the alcohol-soluble polyamide and stirred, and ethanol and alcohol-soluble polyamide particles are heated and stirred at a heating temperature of 180°C-220°C to dissolve the alcohol-soluble polyamide particles into ethanol, thereby obtaining a polyamide solution.

[0078] When the simulated leather is used, the user can use low-proof alcohol to dissolve the edge of the simulated leather so that the simulated leather and the skin have a natural transition. The polyamide solution of this embodiment can be used not only in film and television special effects, such as the use of the above-mentioned simulated leather, but also in the fields and markets of cosmetics, props, medical beauty, such as the production of protective films for items and binding tapes, etc., which are not listed here one by one.

[0079] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0080] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0081] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0083] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A polyamide solution, characterized in that: include: Alcohol-soluble polyamide and solvent, wherein the volume ratio of the alcohol-soluble polyamide to the solvent is 1:70-1:

120.

2. The polyamide solution according to claim 1, characterized in that The solvent is an alcohol solvent.

3. The polyamide solution according to claim 2, characterized in that The solvent is ethanol, and the volume ratio of the alcohol-soluble polyamide to the solvent is 1:70-1:

90.

4. A preparation method, characterized in that: For preparing the polyamide solution according to any one of claims 1 to 3, the preparation method comprises: Adding polyamide particles and solvent into a container; heating a mixture of polyamide particles and a solvent at a first preset temperature and stirring; A polyamide solution was obtained.

5. The preparation method according to claim 4, characterized in that: The first preset temperature ranges from 180°C to 220°C.

6. A method for making artificial leather, characterized in that: Using the polyamide solution described in any one of claims 1 to 3, the method for making the simulated fake leather comprises: Apply a release agent to the molding surface of the mold; Spraying the polyamide solution on the mold surface and drying it to form a film; Inject platinum silicone into the mold in a quantitative manner and close the mold; heating the mold after mold closing at a second preset temperature for a first preset time; The mold after mold closing is cooled down to room temperature naturally; Open the mold and take out the simulated leather product.

7. The method for making artificial leather according to claim 6, characterized in that: The second preset temperature has a value range of 60°C-220°C, the first preset time has a value range of 20min-40min, and / or the simulated fake leather is fake leather for the nose area, and the injection amount of the platinum silicone is 7g-9g.

8. The method for making artificial leather according to claim 6, characterized in that: The platinum silica gel is an addition-type silica gel, and the ratio of component A to component B in the platinum silica gel is 1:1, wherein the ratio of the platinum catalyst in the component B to the platinum silica gel ranges from 1:100 to 1:1000.

9. The method for making artificial leather according to claim 6, characterized in that: The polyamide solution is sprayed 6-10 times, the drying time of the polyamide solution is 5 min-10 min, and / or the film thickness of the polyamide solution is 200 μm-700 μm.

10. The method for making artificial leather according to claim 6, characterized in that: The mold is processed by three-dimensional printing technology.

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