A method and device for preparing functional PE film

Abstract

The present invention discloses a method and device for preparing a functional PE film, wherein the preparation method includes raw material preparation, mixed feeding, plasticization, extrusion, impurity filtering, inflation traction, air ring cooling, corona treatment, trimming recovery, and finished product winding; the preparation device includes a support seat, a conveyor belt, a slide, a first screw, a slider, a second screw, and a cutting knife. The present invention has a streamlined process, high production efficiency, and reduced production costs; based on the basic formula and according to the actual situation, PE films with different protective characteristics are designed, with a wide range of applications and targeted protection; a trimming recovery device is used to trim the produced PE film, and its waste is recycled and reused, avoiding unnecessary waste. The present invention solves the problems of complex PE film production process, high cost, and poor protection effect in oil resistance, corrosion resistance, mildew resistance, antistatic, high and low temperature resistance, etc. in the prior art.

Description

Technical Field

[0001] The invention belongs to the field of PE films, and in particular relates to a method for preparing a functional PE film and a device thereof. Background Art

[0002] PE protective film is a macromolecular organic compound with the simplest structure and the most widely used macromolecular material in the world today. PE protective film uses special polyethylene plastic film as the base material and is divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene according to different densities. The biggest advantage of PE protective film is that the protected product is not polluted, corroded or scratched during production, processing, transportation, storage and use, and the original smooth and shiny surface is protected, thereby improving the quality and market competitiveness of the product.

[0003] As the scope of use of PE films continues to expand, the special properties of products require that the packaging must have specific properties to ensure product quality. Most traditional PE films can only play a physical protective role, but the protective effect on oil resistance, corrosion resistance, mildew resistance, anti-static, high and low temperature resistance, etc. is not obvious, and the traditional PE film production process is complicated and costly. In response to the above-mentioned problems, the present invention analyzes the compatibility of auxiliary materials and polyethylene materials through the various properties of the packaged products, and selects suitable stimulating materials to make the PE film have the functions of oil resistance, corrosion resistance, mildew resistance, anti-static, high and low temperature resistance, and rapid degradation, and innovatively develops the above-mentioned multifunctional fused PE film. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method for preparing a functional PE film and a device thereof, which solves the problems in the prior art that the PE film production process is complicated, the cost is high, and the protective effect is not obvious in terms of oil resistance, corrosion resistance, mildew resistance, anti-static, high and low temperature resistance, etc.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for preparing a functional PE film. The functional PE film includes an oil-proof PE film, an antistatic PE film, a degradable PE film and a flame-retardant and high-temperature resistant PE film.

[0007] The oil-proof PE film comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, 5-10 of polypropylene, and 0.01-0.1 of free radical initiator.

[0008] The antistatic PE film comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, and 0.5-1 of antistatic agent.

[0009] The degradable PE film comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, 10-15 of hydroxypropyl starch, 1-5 of ethylene acrylic acid copolymer, and 1-5 of glycerol plasticizer.

[0010] The flame-retardant and high-temperature resistant PE film comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, 15-20 of ethylene acrylic acid copolymer, 1-5 of copolymer polypropylene, 1-5 of high polyester environmentally friendly resin, and 0.1-1 of antioxidant.

[0011] A method for preparing a functional PE film comprises the following steps:

[0012] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0013] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred;

[0014] S3, plasticizing: after the mixing is completed, the raw materials are transferred and heated for plasticization;

[0015] S4, extrusion: extruding after plasticization is completed;

[0016] S5, filter impurities: filter it to remove impurities;

[0017] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0018] S7, air ring cooling: cooling by blowing air through the air ring;

[0019] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0020] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0021] S10, finished product winding: winding and storing it.

[0022] The mixing and stirring time of the mixed material is 10-15 minutes, and the stirring speed is controlled to be 800-1000 revolutions per minute.

[0023] The plasticizing temperature is 600-800° C. and the time is 2-3 hours.

[0024] The air ring cooling time is 2-3 hours.

[0025] A preparation device for a functional PE film comprises a support base, a conveyor belt and a stop arm are arranged on the support base, a first motor is arranged at one end of the support base, and an output end of the first motor is connected to the support base and is transmission-connected to the conveyor belt.

[0026] Slide grooves are arranged on both sides of the support seat, a second motor is arranged at one end of the slide groove, and the support seat is placed at the lower end of the support frame.

[0027] A first lead screw is arranged in the slide groove, and the first lead screw passes through the slider and cooperates with the slider thread.

[0028] The slider is provided with a base, the base is provided with a second lead screw and a lead screw protective shell, the second lead screw is placed in the lead screw protective shell, one end of the base is provided with a third motor, the output end of the third motor is connected to the base and is transmission-connected to the second lead screw.

[0029] The second lead screw passes through the connecting rod and cooperates with the connecting rod thread. A cutting knife is fixedly provided at one end of the connecting rod. A fourth motor is provided on the connecting rod. The output end of the fourth motor is connected to the connecting rod and is in transmission connection with the cutting knife.

[0030] Waste recovery grooves are provided at both ends of the support seat.

[0031] A support plate is disposed on the support frame, a first cylinder is disposed on the support plate, and an output end of the first cylinder passes through the support plate.

[0032] A second cylinder is arranged in the support seat.

[0033] Beneficial effects of the present invention:

[0034] 1. The process of the present invention is simple, the production efficiency is high, and the production cost is reduced;

[0035] 2. Based on the basic formula, the present invention designs PE films with different protective properties according to the actual situation, which has a wide range of applications and targeted protection;

[0036] 3. The present invention adopts a trimming recovery device to recycle the waste of the produced PE film after trimming the edges, thus avoiding unnecessary waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 2 is a schematic structural diagram of a trimming recovery device according to an embodiment of the present invention;

[0039] Figure 2 is a top view of the trimming recovery device according to an embodiment of the present invention;

[0040] Figure 3 yes Figure 1 A magnified schematic diagram of point A;

[0041] Figure 4 yes Figure 1 An enlarged schematic diagram of point B;

[0042] Figure 5 yes Figure 2 An enlarged schematic diagram of point C;

[0043] Figure 6 2. It is a front view of the trimming recovery device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] 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.

[0045] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] The oil-proof PE film of the present invention comprises the following raw material components, wherein the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, 5-10 of polypropylene, and 0.01-0.1 of free radical initiator.

[0047] Example 1

[0048] The oil-proof PE film comprises the following raw material components, and the weight ratio of each component is: 60% of linear low-density polyethylene, 30% of low-density polyethylene, 5% of metallocene polyethylene, 5% of polypropylene, and 0.01% of free radical initiator.

[0049] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0050] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred for 10 minutes, and the stirring speed is controlled to 800 rpm;

[0051] S3, plasticization: after the mixing is completed, the raw materials are transferred and heated for plasticization, the heating temperature is controlled to be 600°C, and the heating time is 3 hours;

[0052] S4, extrusion: extruding after plasticization is completed;

[0053] S5, filter impurities: filter it to remove impurities;

[0054] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0055] S7, air ring cooling: cooling by blowing air through the air ring, and the cooling time is controlled to be 2 hours;

[0056] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0057] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0058] S10, finished product winding: winding and storing it.

[0059] Example 2

[0060] The oil-proof PE film comprises the following raw material components, and the weight ratio of each component is: 65 of linear low-density polyethylene, 35 of low-density polyethylene, 10 of metallocene polyethylene, 10 of polypropylene, and 0.1 of free radical initiator.

[0061] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0062] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred for 15 minutes, and the stirring speed is controlled to 1000 rpm;

[0063] S3, plasticization: after the mixing is completed, the raw materials are transferred and heated for plasticization, the heating temperature is controlled to be 800°C, and the heating time is 2 hours;

[0064] S4, extrusion: extruding after plasticization is completed;

[0065] S5, filter impurities: filter it to remove impurities;

[0066] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0067] S7, air ring cooling: cooling by blowing air through the air ring, and the cooling time is controlled to be 3 hours;

[0068] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0069] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0070] S10, finished product winding: winding and storing it.

[0071] The antistatic PE film of the present invention comprises the following raw material components, wherein the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene and 0.5-1 of antistatic agent.

[0072] Example 3

[0073] The antistatic PE film comprises the following raw material components, and the weight ratio of each component is: 60% of linear low-density polyethylene, 30% of low-density polyethylene, 5% of metallocene polyethylene, and 0.5% of antistatic agent.

[0074] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0075] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred for 10 minutes, and the stirring speed is controlled to 800 rpm;

[0076] S3, plasticization: after the mixing is completed, the raw materials are transferred and heated for plasticization, the heating temperature is controlled to be 600°C, and the heating time is 3 hours;

[0077] S4, extrusion: extruding after plasticization is completed;

[0078] S5, filter impurities: filter it to remove impurities;

[0079] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0080] S7, air ring cooling: cooling by blowing air through the air ring, and the cooling time is controlled to be 2 hours;

[0081] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0082] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0083] S10, finished product winding: winding and storing it.

[0084] Example 4

[0085] The antistatic PE film comprises the following raw material components, and the weight ratio of each component is: 65 of linear low-density polyethylene, 35 of low-density polyethylene, 10 of metallocene polyethylene, and 1 of antistatic agent.

[0086] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0087] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred for 15 minutes, and the stirring speed is controlled to 1000 rpm;

[0088] S3, plasticization: after the mixing is completed, the raw materials are transferred and heated for plasticization, the heating temperature is controlled to be 800°C, and the heating time is 2 hours;

[0089] S4, extrusion: extruding after plasticization is completed;

[0090] S5, filter impurities: filter it to remove impurities;

[0091] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0092] S7, air ring cooling: cooling by blowing air through the air ring, and the cooling time is controlled to be 3 hours;

[0093] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0094] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0095] S10, finished product winding: winding and storing it.

[0096] The degradable PE film of the invention comprises the following raw material components, wherein the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, 10-15 of hydroxypropyl starch, 1-5 of ethylene acrylic acid copolymer and 1-5 of glycerol plasticizer.

[0097] Example 5

[0098] The degradable PE film comprises the following raw material components, and the weight ratio of each component is: 60 parts of linear low-density polyethylene, 30 parts of low-density polyethylene, 5 parts of metallocene polyethylene, 10 parts of hydroxypropyl starch, 1 part of ethylene acrylic acid copolymer, and 1 part of glycerin plasticizer.

[0099] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0100] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred for 10 minutes, and the stirring speed is controlled to 800 rpm;

[0101] S3, plasticization: after the mixing is completed, the raw materials are transferred and heated for plasticization, the heating temperature is controlled to be 600°C, and the heating time is 3 hours;

[0102] S4, extrusion: extruding after plasticization is completed;

[0103] S5, filter impurities: filter it to remove impurities;

[0104] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0105] S7, air ring cooling: cooling by blowing air through the air ring, and the cooling time is controlled to be 2 hours;

[0106] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0107] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0108] S10, finished product winding: winding and storing it.

[0109] Example 6

[0110] The degradable PE film comprises the following raw material components, and the weight ratio of each component is: 65 of linear low-density polyethylene, 35 of low-density polyethylene, 10 of metallocene polyethylene, 15 of hydroxypropyl starch, 5 of ethylene acrylic acid copolymer, and 5 of glycerin plasticizer.

[0111] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0112] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred for 15 minutes, and the stirring speed is controlled to 1000 rpm;

[0113] S3, plasticization: after the mixing is completed, the raw materials are transferred and heated for plasticization, the heating temperature is controlled to be 800°C, and the heating time is 2 hours;

[0114] S4, extrusion: extruding after plasticization is completed;

[0115] S5, filter impurities: filter it to remove impurities;

[0116] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0117] S7, air ring cooling: cooling by blowing air through the air ring, and the cooling time is controlled to be 3 hours;

[0118] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0119] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0120] S10, finished product winding: winding and storing it.

[0121] The flame-retardant and high-temperature resistant PE film of the present invention comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, 15-20 of ethylene acrylic acid copolymer, 1-5 of copolymer polypropylene, 1-5 of high polyester environmentally friendly resin, and 0.1-1 of antioxidant.

[0122] Example 7

[0123] The flame retardant and high temperature resistant PE film comprises the following raw material components, and the weight ratio of each component is: 60 of linear low density polyethylene, 30 of low density polyethylene, 5 of metallocene polyethylene, 15 of ethylene acrylic acid copolymer, 1 of copolymer polypropylene, 1 of high polyester environmentally friendly resin, and 0.1 of antioxidant.

[0124] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0125] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred for 10 minutes, and the stirring speed is controlled to 800 rpm;

[0126] S3, plasticization: after the mixing is completed, the raw materials are transferred and heated for plasticization, the heating temperature is controlled to be 600°C, and the heating time is 3 hours;

[0127] S4, extrusion: extruding after plasticization is completed;

[0128] S5, filter impurities: filter it to remove impurities;

[0129] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0130] S7, air ring cooling: cooling by blowing air through the air ring, and the cooling time is controlled to be 2 hours;

[0131] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0132] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0133] S10, finished product winding: winding and storing it.

[0134] Example 8

[0135] The flame retardant and high temperature resistant PE film comprises the following raw material components, and the weight ratio of each component is: 65 of linear low density polyethylene, 35 of low density polyethylene, 10 of metallocene polyethylene, 20 of ethylene acrylic acid copolymer, 5 of copolymer polypropylene, 5 of high polyester environmentally friendly resin, and 1 of antioxidant.

[0136] S1. Raw material preparation: weigh all raw materials according to the formula ratio;

[0137] S2, mixed feeding: all the above raw materials are fed through the hopper and mixed and stirred for 15 minutes, and the stirring speed is controlled to 1000 rpm;

[0138] S3, plasticization: after the mixing is completed, the raw materials are transferred and heated for plasticization, the heating temperature is controlled to be 800°C, and the heating time is 2 hours;

[0139] S4, extrusion: extruding after plasticization is completed;

[0140] S5, filter impurities: filter it to remove impurities;

[0141] S6, Blowing and traction: The film blowing machine uses compressed air to blow and inflate the film to form a bubble tube film;

[0142] S7, air ring cooling: cooling by blowing air through the air ring, and the cooling time is controlled to be 3 hours;

[0143] S8, corona treatment: applying high frequency and high voltage electricity to generate high frequency and high voltage discharge, increasing surface roughness, surface area and surface energy;

[0144] S9, edge cutting and recycling: the excess part of the side of the produced PE film is cut off and recycled;

[0145] S10, finished product winding: winding and storing it.

[0146] like Figure 1 As shown, the trimming recovery device of the present invention includes a support base 1, on which a conveyor belt 2 and a barrier arm 3 are provided, on which stacked PE films 4 are placed, and one end of the support base 1 is provided with a first motor 5, wherein an output end of the first motor 5 is connected to the support base 1 and is transmission-connected to the conveyor belt 2.

[0147] The support base 1 is provided with a slide groove 6 on both sides, and a second motor 7 is provided at one end of the slide groove 6. The support base 1 is provided with a waste recovery groove 8 at both ends. The support base 1 is placed at the lower end of a support frame 9, and a support plate 11 is provided on the support frame 9. A first cylinder 10 is provided on the support plate 11, and an output end of the first cylinder 10 passes through the support plate 11.

[0148] like Figure 2 As shown, a first lead screw 12 is disposed in the slide groove 6 , and the first lead screw 12 passes through the slider 13 and is threadedly engaged with the slider 13 .

[0149] like Figure 3 , Figure 4 , Figure 5 As shown, the slider 13 is provided with a base 14, the base 14 is provided with a second lead screw 17 and a lead screw protective shell 16, the second lead screw 17 is placed in the lead screw protective shell 16, one end of the base 14 is provided with a third motor 15, the output end of the third motor 15 is connected to the base 14 and is in transmission connection with the second lead screw 17. The second lead screw 17 passes through the connecting rod 20 and is threadedly matched with the connecting rod 20, one end of the connecting rod 20 is fixedly provided with a cutting knife 19, the connecting rod 20 is provided with a fourth motor 18, the output end of the fourth motor 18 is connected to the connecting rod 20 and is in transmission connection with the cutting knife 19.

[0150] like Figure 6 As shown, a second cylinder 21 is provided in the support seat 1 .

[0151] When in use, the PE film 4 is first stacked and placed on the conveyor belt 2, and then the first motor 5 is started to control the conveyor belt 2 to rotate, thereby conveying the PE film 4. When the PE film 4 is placed between the first cylinder 10 and the second cylinder 21, the first motor 5 is turned off. Then the output end of the second cylinder 21 is controlled to extend, the PE film 4 is lifted and separated from the conveyor belt 2 and the PE film 4 is tightly fitted with the lower end of the barrier arm 3. Then the output end of the first cylinder 10 is controlled to extend to clamp the PE film 4. Then the second motor 7 and the third motor 15 are started to rotate the first lead screw 12 and the second lead screw 17, thereby moving the slider 13 along the slide 6, and the cutting knife 19 moves downward along the lead screw protective shell 16. When the cutting knife 19 is at the same horizontal height as the side end of the PE film 4, the fourth motor 18 is started to control the cutting knife 19 to rotate, and the third motor 15 is turned off. When the cutting knife 19 contacts the side end of the PE film 4, the trimming begins, and the cut waste automatically falls onto the waste recovery trough 8. After the trimming is completed, the fourth motor 18 and the second motor 7 are turned off, and the third motor 15 is reversed to make the cutting knife 19 return to the initial position, and then the output ends of the first cylinder 10 and the second cylinder 21 are controlled to retract, so that the PE film 4 falls onto the conveyor belt 2, and then the first motor 5 is started to convey the PE film 4 away.

[0152] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0153] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A device for preparing a functional PE film, characterized in that: The functional PE film includes oil-proof PE film, antistatic PE film, degradable PE film and flame-retardant and high-temperature resistant PE film; The oil-proof PE film comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, 5-10 of polypropylene, and 0.01-0.1 of free radical initiator; The antistatic PE film comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, and 0.5-1 of antistatic agent; The degradable PE film comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low-density polyethylene, 30-35 of low-density polyethylene, 5-10 of metallocene polyethylene, 10-15 of hydroxypropyl starch, 1-5 of ethylene acrylic acid copolymer, and 1-5 of glycerol plasticizer; The flame retardant and high temperature resistant PE film comprises the following raw material components, and the weight ratio of each component is: 60-65 of linear low density polyethylene, 30-35 of low density polyethylene, 5-10 of metallocene polyethylene, 15-20 of ethylene acrylic acid copolymer, 1-5 of copolymerized polypropylene, 1-5 of high polyester environmentally friendly resin, and 0.1-1 of antioxidant; The functional PE film preparation device comprises a support base (1), a conveyor belt (2) and a stop arm (3) are provided on the support base (1), a first motor (5) is provided at one end of the support base (1), and an output end of the first motor (5) is connected to the support base (1) and is in transmission connection with the conveyor belt (2); Slide grooves (6) are provided on both sides of the support seat (1), a second motor (7) is provided at one end of the slide groove (6), and the support seat (1) is placed at the lower end of the support frame (9); A first lead screw (12) is provided in the slide groove (6), and the first lead screw (12) passes through the slider (13) and is threadably engaged with the slider (13); The slider (13) is provided with a base (14), the base (14) is provided with a second lead screw (17) and a lead screw protection shell (16), the second lead screw (17) is placed in the lead screw protection shell (16), one end of the base (14) is provided with a third motor (15), the output end of the third motor (15) is connected to the base (14) and is in transmission connection with the second lead screw (17); The second lead screw (17) passes through the connecting rod (20) and is threadedly engaged with the connecting rod (20); a cutting knife (19) is fixedly provided at one end of the connecting rod (20); a fourth motor (18) is provided on the connecting rod (20); an output end of the fourth motor (18) is connected to the connecting rod (20) and is in driving connection with the cutting knife (19); A support plate (11) is provided on the support frame (9), a first cylinder (10) is provided on the support plate (11), and an output end of the first cylinder (10) passes through the support plate (11); The support seat (1) is provided with a second cylinder (21), and the output end of the second cylinder (21) is controlled to extend, so as to lift the PE film (4) away from the conveyor belt (2) and make the PE film (4) fit tightly with the lower end of the barrier arm (3); then, the output end of the first cylinder (10) is controlled to extend, so as to clamp and fix the PE film (4).

2. The device for preparing a functional PE film according to claim 1, characterized in that: Waste recovery grooves (8) are provided at both ends of the support base (1).

Images