Airplane and high-speed rail dinner plate with anti-slip effect and preparation method of dinner plate

Abstract

The invention discloses an airplane and high-speed rail dinner plate with an anti-slip effect, and relates to the technical field of dinner plates, the airplane and high-speed rail dinner plate comprises a TPU material layer, a hot melt adhesive layer and a substrate layer which are connected in sequence, and the TPU material layer comprises, by weight, thermoplastic polyurethane, corn starch and corn straw cellulose. The hot melt adhesive layer is made of hot melt adhesive particles. The TPU material layer also comprises the following auxiliary solvents, an antioxidant, polypropylene, polyethylene, a plasticizer, a heat stabilizer, nano titanium dioxide powder, high glue powder and a lubricant. According to the anti-slip dinner plate, the thermoplastic polyurethane has good anti-slip performance, the thermoplastic polyurethane further has good elasticity and flexibility, so that the whole dinner plate has better compression resistance, meanwhile, the polypropylene and the polyethylene are matched, the polypropylene has good heat resistance, the whole dinner plate can have good anti-slip performance, the service life of the dinner plate is prolonged, and the service life of the dinner plate is prolonged. Meanwhile, the environment-friendly performance and the renewable recycling effect are good.

Description

Technical Field

[0001] The invention relates to the technical field of dining trays, and in particular to an airplane and high-speed rail dining tray with an anti-slip effect and a preparation method thereof. Background Art

[0002] As an indispensable daily utensil in people's daily life, dinner plates can be divided into glass dinner plates, plastic dinner plates, wooden dinner plates and other dinner plates according to their materials. Dinner plates can be divided into restaurant dinner plates, school canteen dinner plates, adult dinner plates, children's dinner plates and other dinner plates according to their uses. There are also dinner plates used in high-speed trains or airplanes.

[0003] For example, the antibacterial heat-insulating glass dinner plate and its preparation method disclosed in the authorization announcement number CN107140832A, wherein silicon dioxide and other raw materials are first dispersed by ultrasound, then placed in a ball mill, sintering aid and lignin are added for ball milling and drying, and then the remaining raw materials are added for melting, casting, annealing, tempering, etc. to obtain the glass dinner plate of the present invention. The glass dinner plate of the present invention has high strength, good heat insulation, antibacterial and antibacterial properties, bright color, fine texture, suitable for microwave heating, strong applicability, and durable life.

[0004] For example, a high-strength and shatter-resistant PP plastic dinner plate and a method for making the same are disclosed in the authorization announcement number CN112724523A, wherein the raw materials are calculated by weight; the high-strength and shatter-resistant PP plastic dinner plate reduces production costs while ensuring product quality by replacing production raw materials.

[0005] However, when the above-mentioned meal tray is used on an airplane or a high-speed train, the airplane or the high-speed train will generate a certain degree of vibration, which may easily lead to the problem that the meal tray is difficult to be stably placed. Therefore, we propose an airplane and high-speed train meal tray with an anti-slip effect. Summary of the invention

[0006] The object of the present invention is to provide an airplane and high-speed rail dining tray with anti-slip effect. By setting the dining tray, thermoplastic polyurethane, antioxidant, polypropylene, polyethylene, plasticizer, heat stabilizer, nano titanium dioxide powder, corn starch, corn straw cellulose, high rubber powder and lubricant are used to make the entire dining tray have good anti-slip performance and good environmental protection performance.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] In a first aspect, the present invention provides an airplane and high-speed rail dining tray with an anti-slip effect, comprising a TPU material layer, a hot melt adhesive layer and a base material layer connected in sequence, wherein the TPU material layer comprises the following raw materials in parts by weight, specifically 45 to 55 parts of thermoplastic polyurethane, 20 to 25 parts of corn starch and 3 to 6 parts of corn straw cellulose.

[0009] Preferably, the hot melt adhesive layer is hot melt adhesive particles, and the hot melt adhesive particles account for 40 to 50 parts, and more preferably, the hot melt adhesive particles account for 45 parts.

[0010] Preferably, the TPU material layer also includes the following raw materials in parts by weight, specifically 45-55 parts of thermoplastic polyurethane, 2-5 parts of auxiliary solvent, 10-15 parts of antioxidant, 20-30 parts of polypropylene, 15-25 parts of polyethylene, 0.6-0.8 parts of plasticizer, 0.2-0.4 parts of thermal stabilizer, 5-10 parts of nano titanium dioxide powder, 4-8 parts of high rubber powder and 2-5 parts of lubricant.

[0011] Specifically, the TPU material layer includes the following raw materials in parts by weight, specifically 45 parts of thermoplastic polyurethane, 2 parts of auxiliary solvent, 10 parts of antioxidant, 20 parts of polypropylene, 15 parts of polyethylene, 0.6 parts of plasticizer, 0.2 parts of heat stabilizer, 5 parts of nano titanium dioxide powder, 20 parts of corn starch, 3 parts of corn straw cellulose, 4 parts of high rubber powder and 2 parts of lubricant.

[0012] Furthermore, the TPU material layer includes the following raw materials in parts by weight, specifically 55 parts of thermoplastic polyurethane, 5 parts of auxiliary solvent, 15 parts of antioxidant, 30 parts of polypropylene, 25 parts of polyethylene, 0.8 parts of plasticizer, 0.4 parts of heat stabilizer, 10 parts of nano titanium dioxide powder, 25 parts of corn starch, 6 parts of corn straw cellulose, 8 parts of high rubber powder and 4 parts of lubricant.

[0013] Furthermore, the TPU material layer includes the following raw materials in parts by weight, specifically 50 parts of thermoplastic polyurethane, 3 parts of auxiliary solvent, 13 parts of antioxidant, 25 parts of polypropylene, 20 parts of polyethylene, 0.7 parts of plasticizer, 0.3 parts of heat stabilizer, 8 parts of nano titanium dioxide powder, 23 parts of corn starch, 5 parts of corn straw cellulose, 6 parts of high rubber powder and 3 parts of lubricant.

[0014] Preferably, the auxiliary solvent is one or both of white oil and toluene.

[0015] Preferably, the antioxidant is specifically composed of a first antioxidant and a second antioxidant, wherein the first antioxidant is specifically a phosphite antioxidant, the second antioxidant is a thioester antioxidant, and the first antioxidant and the second antioxidant are mixed in a weight ratio of 1:1.

[0016] Preferably, the heat stabilizer is one or both of a calcium-zinc composite heat stabilizer or an organic tin heat stabilizer, the plasticizer is composed of tributyl citrate and an epoxy plasticizer, and the tributyl citrate and the epoxy plasticizer are mixed in a weight ratio of 1.5:1, and the lubricant is one of calcium stearate, polyethylene wax or ethylene bisstearamide.

[0017] In a second aspect, the present invention provides a method for preparing an airplane and high-speed rail dining tray with an anti-slip effect as described above, wherein the specific steps of the preparation method are as follows:

[0018] Step 1, take out the TPU material layer raw materials and hot melt adhesive particles according to the weight ratio, and put all the above raw materials into a double-layer co-extruder to obtain a double-layer substrate, the TPU material layer raw materials form a TPU anti-slip layer, the hot melt adhesive particles form a hot melt adhesive layer, and the TPU anti-slip layer is located in the lower layer, and the hot melt adhesive layer is located in the upper layer, wherein the thermoplastic temperature set by the double-layer co-extruder is: 170 degrees to 230 degrees;

[0019] Step 2: then taking out the double-layer substrate obtained in step 1, cutting it into a desired shape by a cutting machine according to actual needs, and performing composite processing with the base material to finally obtain a dinner plate embryo;

[0020] Step 3: Place the dinner plate blank obtained in step 2 in a hot pressing machine for hot pressing to finally obtain a dinner plate. Then take out the dinner plate and place it in the room for cooling until the temperature of the dinner plate drops to the same as room temperature.

[0021] Preferably, the double-layer substrate obtained in the step one is embossed, and the embossing method is: the double-layer substrate is placed under a pressure roller with a certain temperature and a surface provided with a coarse yarn pattern, and the TPU anti-slip layer is processed by the pressure roller to form a coarse sand pattern on the surface of the TPU anti-slip layer.

[0022] Preferably, the dinner plate obtained after the processing in step three is subjected to external surface processing such as trimming, grinding and polishing to finally obtain a finished dinner plate.

[0023] Technical effects and advantages of the present invention:

[0024] (1) By combining thermoplastic polyurethane, polypropylene and polyethylene, the thermoplastic polyurethane itself has good anti-slip properties, and the thermoplastic polyurethane also has good elasticity and flexibility, so that the entire dinner plate has better compression resistance. At the same time, by combining polypropylene and polyethylene, the polypropylene has good heat resistance, so that the entire dinner plate has better heat resistance;

[0025] (2) By adding corn starch and corn straw cellulose, the biodegradation of corn starch and corn straw cellulose can be used to accelerate the biodegradation of plastic dinner plates, thereby achieving good environmental protection performance and renewable recycling effects. At the same time, corn starch can also play a filling role, reducing the manufacturing cost of plastic dinner plates. At the same time, corn straw cellulose can enhance the plastic dinner plates, not only making the entire dinner plate have good mechanical properties, but also further improving thermal stability. It can also play a certain role in melting and lubrication during production, so that the raw materials of the plastic dinner plates are fully integrated;

[0026] (3) By adding the first antioxidant and the second antioxidant, the entire plastic dinner plate has good antioxidant properties, thereby extending the service life of the plastic dinner plate. At the same time, with the plasticizer, the plastic dinner plate raw materials can have good mechanical properties after fusion molding. At the same time, environmentally friendly materials are selected as much as possible to make the entire plastic dinner plate more environmentally friendly. At the same time, nano titanium dioxide powder and high rubber powder are added to further improve the heat resistance, mechanical properties and toughness of the entire plastic dinner plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the preparation method of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The present invention provides Figure 1 The airplane and high-speed rail dining tray shown has an anti-slip effect, comprising a TPU material layer, a hot-melt adhesive layer and a base material layer connected in sequence. The TPU material layer comprises the following raw materials in parts by weight, specifically 45 to 55 parts of thermoplastic polyurethane, 20 to 25 parts of corn starch and 3 to 6 parts of corn straw cellulose.

[0030] The hot melt adhesive layer is hot melt adhesive particles, with 40 to 50 parts of hot melt adhesive particles.

[0031] It should be further explained that the TPU material layer includes the following raw materials in parts by weight, specifically 45 parts of thermoplastic polyurethane, 2 parts of auxiliary solvent, 10 parts of antioxidant, 20 parts of polypropylene, 15 parts of polyethylene, 0.6 parts of plasticizer, 0.2 parts of heat stabilizer, 5 parts of nano titanium dioxide powder, 20 parts of corn starch, 3 parts of corn straw cellulose, 4 parts of high rubber powder and 2 parts of lubricant.

[0032] It should be further explained that the TPU material layer includes the following raw materials in parts by weight, specifically 55 parts of thermoplastic polyurethane, 5 parts of auxiliary solvent, 15 parts of antioxidant, 30 parts of polypropylene, 25 parts of polyethylene, 0.8 parts of plasticizer, 0.4 parts of heat stabilizer, 10 parts of nano titanium dioxide powder, 25 parts of corn starch, 6 parts of corn straw cellulose, 8 parts of high rubber powder and 4 parts of lubricant.

[0033] It should be further explained that the TPU material layer includes the following raw materials in parts by weight, specifically 50 parts of thermoplastic polyurethane, 3 parts of auxiliary solvent, 13 parts of antioxidant, 25 parts of polypropylene, 20 parts of polyethylene, 0.7 parts of plasticizer, 0.3 parts of heat stabilizer, 8 parts of nano titanium dioxide powder, 23 parts of corn starch, 5 parts of corn straw cellulose, 6 parts of high rubber powder and 3 parts of lubricant.

[0034] By combining thermoplastic polyurethane, polypropylene and polyethylene, and taking advantage of the good anti-slip properties of thermoplastic polyurethane itself, as well as the good elasticity and flexibility of thermoplastic polyurethane, the entire dinner plate has better compression resistance. At the same time, by combining polypropylene and polyethylene, and taking advantage of the good heat resistance of polypropylene, the entire dinner plate has better heat resistance.

[0035] By adding corn starch and corn straw cellulose, and utilizing the biodegradation effects of both corn starch and corn straw cellulose, the plastic plates can be biodegraded faster, thereby achieving good environmental performance. Corn starch can also act as a filler, reducing the manufacturing cost of plastic plates. In combination with corn straw cellulose, it can enhance the plastic plates, not only making the entire plate have good mechanical properties, but also further improving thermal stability. It can also play a certain role in melting and lubricating during production, allowing the raw materials of the plastic plates to be fully integrated.

[0036] It should be noted that the auxiliary solvent is specifically one or both of white oil and toluene. When only one auxiliary solvent is selected, white oil is selected as the auxiliary solvent.

[0037] Furthermore, the antioxidant is specifically composed of a first antioxidant and a second antioxidant, wherein the first antioxidant is specifically a phosphite antioxidant, the second antioxidant is a thioester antioxidant, and the first antioxidant and the second antioxidant are mixed in a weight ratio of 1:1.

[0038] Furthermore, the heat stabilizer is specifically one or both of a calcium-zinc composite heat stabilizer and an organic tin heat stabilizer. When only one heat stabilizer is selected, the calcium-zinc composite heat stabilizer is selected.

[0039] Furthermore, the plasticizer is composed of tributyl citrate and epoxy plasticizer, and the tributyl citrate and epoxy plasticizer are mixed in a weight ratio of 1.5:1.

[0040] Furthermore, the lubricant is specifically one of calcium stearate, polyethylene wax or ethylene bisstearamide.

[0041] By adding the first antioxidant and the second antioxidant, the entire plastic dinner plate has good antioxidant properties, thereby extending the service life of the plastic dinner plate. At the same time, with the plasticizer, the plastic dinner plate raw materials can have good mechanical properties after fusion molding. At the same time, environmentally friendly materials are selected as much as possible to make the entire plastic dinner plate more environmentally friendly. At the same time, nano titanium dioxide powder and high rubber powder are added to further improve the heat resistance, mechanical properties and toughness of the entire plastic dinner plate.

[0042] A method for preparing an airplane high-speed rail dining tray with an anti-slip effect, the specific steps of the preparation method are as follows:

[0043] Step 1, take out the TPU material layer raw materials and hot melt adhesive particles according to the weight ratio, and put all the above raw materials into a double-layer co-extruder to obtain a double-layer substrate, the TPU material layer raw materials form a TPU anti-slip layer, the hot melt adhesive particles form a hot melt adhesive layer, and the TPU anti-slip layer is located in the lower layer, and the hot melt adhesive layer is located in the upper layer, wherein the thermoplastic temperature set by the double-layer co-extruder is: 170 degrees to 230 degrees;

[0044] Step 2: then taking out the double-layer substrate obtained in step 1, cutting it into a desired shape by a cutting machine according to actual needs, and performing composite processing with the base material to finally obtain a dinner plate embryo;

[0045] Step 3: Place the dinner plate blank obtained in step 2 in a hot pressing machine for hot pressing to finally obtain a dinner plate. Then take out the dinner plate and place it in the room for cooling until the temperature of the dinner plate drops to the same as room temperature.

[0046] Furthermore, the double-layer substrate obtained in step one is subjected to embossing processing, and the embossing processing method is: the double-layer substrate is placed under a pressure roller with a certain temperature and a surface provided with a coarse yarn pattern, and the TPU anti-slip layer is processed by the pressure roller, so that the TPU anti-slip layer forms a coarse sand pattern, thereby further improving the anti-slip effect of the plate.

[0047] Furthermore, the dinner plate obtained after the processing in step three is subjected to external surface processing such as trimming, grinding and polishing to finally obtain a finished dinner plate.

[0048] The thermoplastic polyurethane of the present invention is preferably Huntsman 6053 thermoplastic polyurethane, which has good anti-slip effect. The high-glue powder selected in the present invention is specifically ABS high-glue powder. Different hot melt adhesive particles are selected for different substrates. The substrate here is a dinner plate material, so that the hot melt adhesive layer can be connected to the substrate.

[0049] A polyethylene plastic film was selected as α, a polypropylene plastic film was recorded as β, a thermoplastic polyurethane plastic film was recorded as γ, and a plastic film made of 45 parts of the above-mentioned thermoplastic polyurethane, 20 parts of corn starch and 3 parts of corn straw cellulose was recorded as δ for experimental comparison, and the experimental results were recorded as Table 1.

[0050]

[0051] Table 1

[0052] In summary, the plastic film made from the above-mentioned dinner plate preparation raw materials has good compression resistance and anti-slip ability compared with the other three plastic films.

[0053] Embodiment 1:

[0054] The specific steps of a method for preparing an airplane high-speed rail dining tray with anti-slip effect are as follows:

[0055] Step 1, take out 45 parts of thermoplastic polyurethane, 20 parts of polypropylene, 15 parts of polyethylene, 2 parts of auxiliary solvent, 10 parts of antioxidant, 0.6 parts of plasticizer, 0.2 parts of heat stabilizer, 5 parts of nano titanium dioxide powder, 20 parts of corn starch, 3 parts of corn straw cellulose, 4 parts of high glue powder and 2 parts of lubricant and 45 parts of hot melt adhesive particles, and put all the above raw materials into a double-layer co-extruder to obtain a double-layer substrate, thermoplastic polyurethane, polypropylene, polyethylene, auxiliary solvent, antioxidant, plasticizer, heat stabilizer, nano titanium dioxide powder, corn starch, corn straw cellulose, high glue powder and lubricant form a TPU anti-slip layer, hot melt adhesive particles form a hot melt adhesive layer, and the TPU anti-slip layer is located in the lower layer, and the hot melt adhesive layer is located in the upper layer, wherein the thermoplastic temperature set by the double-layer co-extruder is: 170 degrees to 230 degrees;

[0056] Then, the double-layer substrate obtained in the step 1 is embossed, and the double-layer substrate is placed under a pressure roller with a certain temperature and a coarse yarn pattern on the surface, and the TPU anti-slip layer is processed by the pressure roller to form a coarse sand pattern on the surface of the TPU anti-slip layer;

[0057] Step 2, then take out the double-layer substrate after embossing, cut it into the required shape by a cutting machine according to actual needs, and perform composite processing with the base material to finally obtain a dinner plate embryo;

[0058] Step 3: Place the dinner plate blank obtained in step 2 in a hot pressing machine for hot pressing to finally obtain a dinner plate. Then take out the dinner plate and place it in the room for cooling until the temperature of the dinner plate drops to the same as room temperature.

[0059] Three dinner plates produced by the preparation method of Example 1 are selected, and the three dinner plates are recorded as A1, A2 and A3 respectively, and then three dinner plates in the prior art are selected and recorded as X1, X2 and X3 respectively, and then A1, A2, A3, X1, X2 and X3 are placed on a placement plate inclined at 10 degrees, a placement plate inclined at 15 degrees, a placement plate inclined at 30 degrees, a vibrating placement plate inclined at 10 degrees, a vibrating placement plate inclined at 15 degrees and a vibrating placement plate inclined at 30 degrees respectively for experiments, and the experimental results are formed in Table 2. The vibrating placement plate mainly drives the placement plate to vibrate with a small amplitude through the vibrator, and the vibration is continuous, which is stronger than the vibration generated by an airplane and a high-speed train, and is used to simulate the vibration scene generated when an airplane or a high-speed train moves, and a scale can be set on the placement plate.

[0060]

[0061]

[0062] Table 2

[0063] Embodiment 2:

[0064] The specific steps of a method for preparing an airplane high-speed rail dining tray with anti-slip effect are as follows:

[0065] Step 1, take out 55 parts of thermoplastic polyurethane, 20 parts of polypropylene, 15 parts of polyethylene, 5 parts of auxiliary solvent, 15 parts of antioxidant, 0.8 parts of plasticizer, 0.4 parts of heat stabilizer, 10 parts of nano titanium dioxide powder, 25 parts of corn starch, 6 parts of corn straw cellulose, 8 parts of high glue powder and 4 parts of lubricant and 45 parts of hot melt adhesive particles, and put all the above raw materials into a double-layer co-extruder to obtain a double-layer substrate, thermoplastic polyurethane, polypropylene, polyethylene, auxiliary solvent, antioxidant, plasticizer, heat stabilizer, nano titanium dioxide powder, corn starch, corn straw cellulose, high glue powder and lubricant form a TPU anti-slip layer, hot melt adhesive particles form a hot melt adhesive layer, and the TPU anti-slip layer is located in the lower layer, and the hot melt adhesive layer is located in the upper layer, wherein the thermoplastic temperature set by the double-layer co-extruder is: 170 degrees to 230 degrees;

[0066] Then, the double-layer substrate obtained in the step 1 is embossed, and the double-layer substrate is placed under a pressure roller with a certain temperature and a coarse yarn pattern on the surface, and the TPU anti-slip layer is processed by the pressure roller to form a coarse sand pattern on the surface of the TPU anti-slip layer;

[0067] Step 2, then take out the double-layer substrate after embossing, cut it into the required shape by a cutting machine according to actual needs, and perform composite processing with the base material to finally obtain a dinner plate embryo;

[0068] Step 3: Place the dinner plate blank obtained in step 2 in a hot pressing machine for hot pressing to finally obtain a dinner plate. Then take out the dinner plate and place it in the room for cooling until the temperature of the dinner plate drops to the same as room temperature.

[0069] Three dinner plates produced by the preparation method of Example 2 are selected, and the three dinner plates are recorded as B1, B2 and B3 respectively. Then three dinner plates in the prior art are selected and recorded as Y1, Y2 and Y3 respectively. Then, B1, B2, B3, Y1, Y2 and Y3 are placed on a placement plate inclined at 10 degrees, a placement plate inclined at 15 degrees, a placement plate inclined at 30 degrees, a vibrating placement plate inclined at 10 degrees, a vibrating placement plate inclined at 15 degrees and a vibrating placement plate inclined at 30 degrees respectively for experiments. The experimental results are formed in Table 3. The vibrating placement plate mainly drives the placement plate to vibrate with a small amplitude through the vibrator, and the vibration is continuous, which is stronger than the vibration generated by an airplane and a high-speed train, and is used to simulate the vibration scene generated when an airplane or a high-speed train moves, and a scale can be set on the placement plate.

[0070]

[0071]

[0072] Table 3

[0073] Embodiment 3:

[0074] The specific steps of a method for preparing an airplane high-speed rail dining tray with anti-slip effect are as follows:

[0075] Step 1, take out 50 parts of thermoplastic polyurethane, 25 parts of polypropylene, 20 parts of polyethylene, 3 parts of auxiliary solvent, 13 parts of antioxidant, 0.7 parts of plasticizer, 0.3 parts of heat stabilizer, 8 parts of nano titanium dioxide powder, 23 parts of corn starch, 5 parts of corn straw cellulose, 6 parts of high rubber powder and 3 parts of lubricant and 45 parts of hot melt adhesive particles, and put all the above raw materials into a double-layer co-extruder to obtain a double-layer substrate, thermoplastic polyurethane, polypropylene, polyethylene, auxiliary solvent, antioxidant, plasticizer, heat stabilizer, nano titanium dioxide powder, corn starch, corn straw cellulose, high rubber powder and lubricant form a TPU anti-slip layer, hot melt adhesive particles form a hot melt adhesive layer, and the TPU anti-slip layer is located in the lower layer, and the hot melt adhesive layer is located in the upper layer, wherein the thermoplastic temperature set by the double-layer co-extruder is: 170 degrees to 230 degrees;

[0076] Then, the double-layer substrate obtained in the step 1 is embossed, and the double-layer substrate is placed under a pressure roller with a certain temperature and a coarse yarn pattern on the surface, and the TPU anti-slip layer is processed by the pressure roller to form a coarse sand pattern on the surface of the TPU anti-slip layer;

[0077] Step 2, then take out the double-layer substrate after embossing, cut it into the required shape by a cutting machine according to actual needs, and perform composite processing with the base material to finally obtain a dinner plate embryo;

[0078] Step 3: Place the dinner plate blank obtained in step 2 in a hot pressing machine for hot pressing to finally obtain a dinner plate. Then take out the dinner plate and place it in the room for cooling until the temperature of the dinner plate drops to the same as room temperature.

[0079] Three dinner plates produced by the preparation method of Example 3 are selected, and the three dinner plates are recorded as C1, C2 and C3 respectively. Then three dinner plates in the prior art are selected and recorded as Z1, Z2 and Z3 respectively. Then C1, C2, C3, Z1, Z2 and Z3 are placed on a placement plate inclined at 10 degrees, a placement plate inclined at 15 degrees, a placement plate inclined at 30 degrees, a vibrating placement plate inclined at 10 degrees, a vibrating placement plate inclined at 15 degrees and a vibrating placement plate inclined at 30 degrees respectively for experiments. The experimental results are formed in Table 4. The vibrating placement plate mainly drives the placement plate to vibrate with a small amplitude through the vibrator, and the vibration is continuous, which is stronger than the vibration generated by an airplane and a high-speed train, and is used to simulate the vibration scene generated when an airplane or a high-speed train moves, and a scale can be set on the placement plate.

[0080]

[0081] Table 4

[0082] Based on the above experiments, it can be concluded that for an airplane and high-speed rail dining tray with anti-slip effect, the TPU anti-slip layer is preferably composed of the following raw materials in parts by weight, specifically 50 parts of thermoplastic polyurethane, 3 parts of auxiliary solvent, 13 parts of antioxidant, 25 parts of polypropylene, 20 parts of polyethylene, 0.7 parts of plasticizer, 0.3 parts of heat stabilizer, 8 parts of nano titanium dioxide powder, 23 parts of corn starch, 5 parts of corn straw cellulose, 6 parts of high rubber powder and 3 parts of lubricant, which has a better anti-slip effect.

[0083] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An airplane and high-speed rail dining tray with anti-slip effect, characterized in that: It comprises a TPU material layer, a hot melt adhesive layer and a base material layer which are connected in sequence. The TPU material layer comprises the following raw materials in parts by weight, specifically 45-55 parts of thermoplastic polyurethane, 20-25 parts of corn starch and 3-6 parts of corn straw cellulose.

2. The aircraft and high-speed rail dining tray with anti-slip effect according to claim 1, characterized in that: The hot melt adhesive layer is hot melt adhesive particles, and the weight proportion of the hot melt adhesive particles is 40 to 50 parts.

3. The aircraft and high-speed rail dining tray with anti-slip effect according to claim 1, characterized in that: The TPU material layer also includes the following raw materials in parts by weight, specifically 45-55 parts of thermoplastic polyurethane, 2-5 parts of auxiliary solvent, 10-15 parts of antioxidant, 20-30 parts of polypropylene, 15-25 parts of polyethylene, 0.6-0.8 parts of plasticizer, 0.2-0.4 parts of thermal stabilizer, 5-10 parts of nano titanium dioxide powder, 4-8 parts of high rubber powder and 2-5 parts of lubricant.

4. The aircraft and high-speed rail dining tray with anti-slip effect according to claim 2, characterized in that: The TPU material layer includes the following raw materials in parts by weight, specifically 50 parts of thermoplastic polyurethane, 3 parts of auxiliary solvent, 13 parts of antioxidant, 25 parts of polypropylene, 20 parts of polyethylene, 0.7 parts of plasticizer, 0.3 parts of heat stabilizer, 8 parts of nano titanium dioxide powder, 23 parts of corn starch, 5 parts of corn straw cellulose, 6 parts of high rubber powder and 3 parts of lubricant.

5. The aircraft and high-speed rail dining tray with anti-slip effect according to claim 3, characterized in that: The auxiliary solvent is specifically one or both of white oil and toluene.

6. The aircraft and high-speed rail dining tray with anti-slip effect according to claim 3, characterized in that: The antioxidant is specifically composed of a first antioxidant and a second antioxidant, wherein the first antioxidant is specifically a phosphite antioxidant, the second antioxidant is a thioester antioxidant, and the first antioxidant and the second antioxidant are mixed in a weight ratio of 1:

1.

7. The aircraft and high-speed rail dining tray with anti-slip effect according to claim 3, characterized in that: The heat stabilizer is specifically one or both of a calcium-zinc composite heat stabilizer or an organic tin heat stabilizer, the plasticizer is composed of tributyl citrate and an epoxy plasticizer, and the tributyl citrate and the epoxy plasticizer are mixed in a weight ratio of 1.5:1, and the lubricant is specifically one of calcium stearate, polyethylene wax or ethylene bisstearamide.

8. The method for preparing a dining tray for airplanes and high-speed railways with anti-slip effect according to any one of claims 3 to 7, characterized in that: The specific steps of the preparation method are as follows: Step 1, take out the TPU material layer raw materials and hot melt adhesive particles according to the weight ratio, and put all the above raw materials into a double-layer co-extruder to obtain a double-layer substrate, the TPU material layer raw materials form a TPU anti-slip layer, the hot melt adhesive particles form a hot melt adhesive layer, and the TPU anti-slip layer is located in the lower layer, and the hot melt adhesive layer is located in the upper layer, wherein the thermoplastic temperature set by the double-layer co-extruder is: 170 degrees to 230 degrees; Step 2: then taking out the double-layer substrate obtained in step 1, cutting it into a desired shape by a cutting machine according to actual needs, and performing composite processing with the base material to finally obtain a dinner plate embryo; Step 3: Place the dinner plate blank obtained in step 2 in a hot pressing machine for hot pressing to finally obtain a dinner plate. Then take out the dinner plate and place it in the room for cooling until the temperature of the dinner plate drops to the same as room temperature.

9. The method for preparing a dining tray for airplanes and high-speed railways with anti-slip effect according to claim 8, characterized in that: The double-layer substrate obtained in step one is embossed, and the embossing method is: the double-layer substrate is placed under a pressure roller with a certain temperature and a coarse yarn pattern on the surface, and the TPU anti-slip layer is processed by the pressure roller to form a coarse sand pattern on the surface of the TPU anti-slip layer.

10. The method for preparing a dining tray for airplanes and high-speed railways with anti-slip effect according to claim 9, characterized in that: The dinner plate obtained after the processing in step three is subjected to external surface processing such as trimming, grinding and polishing to finally obtain a finished dinner plate.

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