Antibacterial film and production equipment thereof

Abstract

The invention belongs to the technical field of film production, and particularly relates to an antibacterial film and production equipment thereof, the antibacterial film comprises 100 parts by weight of PET, 8-15 parts by weight of transparent antibacterial master batch, 0.3-0.6 part by weight of an antioxidant, 0.5-1.2 parts by weight of an organosilicon slipping agent and 1.5-2.5 parts by weight of silane coupling agent modified nano silicon dioxide; wherein the transparent antibacterial master batch comprises an antibacterial agent, PET, a dispersing agent and an antioxidant; by adding the silane coupling agent modified nano silicon dioxide, the tensile strength and the impact strength of the material can be remarkably improved, the antibacterial film is more stretch-proof and tear-resistant in the use process, the service life is prolonged, the transparent antibacterial master batch adopts PET as a matrix, the good transparency of the antibacterial film is effectively guaranteed, and the antibacterial film has the advantages of being good in antibacterial property, good in mechanical property and the like. The antibacterial film can meet and be suitable for application places with requirements on transparency, and the applicability of the antibacterial film is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of film production, and particularly relates to an antibacterial film and a production equipment thereof. BACKGROUND

[0002] In daily life, a large number of bacteria often breed on the surface of plastic products; these bacteria not only cause pollution to food, medicine and the like, but also can become a medium for disease transmission, thereby bringing great threat to human health; in particular, in the field of food packaging, once the packaging material is contaminated by bacteria, food spoilage is easily caused, thereby leading to food safety problems; in the field of medical equipment, the breeding of bacteria can cause cross infection, thereby seriously affecting the treatment effect and life health of patients.

[0003] In order to solve the problem of bacterial breeding on the surface of plastic products, the antibacterial film is usually used to inhibit bacterial breeding on the surface of the packaging; at present, in addition to the antibacterial performance, the common antibacterial film is poor in transparency and tensile and impact strength, which easily affects the service life of the antibacterial film, and cannot cope with application scenarios with requirements for transparency, and needs to be improved. SUMMARY

[0004] The application aims at the above-mentioned technical problems, and provides an antibacterial film and a production equipment thereof, so as to improve the structural strength of the antibacterial film, prolong the service life, and make the antibacterial film have high transparency, thereby meeting the effect of some application scenarios with requirements for transparency.

[0005] Therefore, the application provides an antibacterial film, which comprises the following components: 100 parts by weight of PET, 8-15 parts by weight of transparent antibacterial master batch, 0.3-0.6 parts by weight of antioxidant, 0.5-1.2 parts by weight of silicone slip agent and 1.5-2.5 parts by weight of nano-silicon dioxide modified by silane coupling agent. The transparent antibacterial master batch comprises antibacterial agent, PET, dispersant and antioxidant.

[0006] In the above technical solution, further: The silicone slip agent is polydimethylsiloxane.

[0007] In the above technical solution, further: The antioxidant is compounded by antioxidant 1076 and phosphite antioxidant in an ammonia weight ratio of 2:1.

[0008] In the above technical solution, further: In the transparent antibacterial master batch, the antibacterial agent comprises silver-zinc composite glass carrier preparation, the dispersant is compounded by zinc stearate and silane coupling agent KH-560, and the antioxidant is compounded by antioxidant 1010 and phosphite 168. The silver ion content in the silver-zinc composite glass carrier preparation is 0.3-0.5 wt%, and the zinc ion content is 1.2-1.8 wt%.

[0009] The application provides a production equipment of an antibacterial film, comprising: A mixing mechanism is used for mixing components of the antibacterial film and components of the transparent antibacterial master batch before melting, and comprises a barrel, and a discharge port is formed in the side of the bottom of the barrel; An extrusion mechanism is provided with a feeding port connected to the discharge port of the mixing mechanism, and is used for melting and extruding the mixed components; A conduit is connected to the discharge port and the feeding port at both ends; A support is installed on the side of the extrusion mechanism, and is used for installing and supporting the mixing mechanism and the extrusion mechanism.

[0010] The mixing mechanism comprises a rotating shaft, a stirring rod assembly installed on the rotating shaft, a driving device used for driving the rotating shaft to rotate, and a lifting assembly used for connecting the rotating shaft and the stirring rod assembly, and the lifting assembly can drive the stirring rod assembly to lift when the rotating shaft rotates.

[0011] In the above technical solution, further, the lifting assembly comprises: A ball nut is sleeved on the rotating shaft, and a reciprocating screw rod segment for reciprocating lifting of the ball nut is arranged on the rotating shaft, and the stirring rod assembly is bearing-connected to the ball nut; A planetary gear set is installed on the barrel, and is used for driving the stirring rod assembly to revolve around the rotating shaft and the stirring rod assembly to rotate by itself; A guide rod is arranged parallel to the rotating shaft, penetrates through the ball nut, and is used for rotation limitation of the ball nut during lifting; A fixed rod is connected to the inner wall of the barrel at one end, and is connected to the guide rod at the other end, and is used for fixed installation of the guide rod in the barrel.

[0012] In the above technical solution, further, the planetary gear set comprises: A sun gear is sleeved on the rotating shaft, and is fixedly connected to the rotating shaft; A planet carrier is installed on the axial side of the sun gear, and is bearing-connected to the sun gear; A plurality of planet gears are arranged around the sun gear, and are meshingly connected to the sun gear; A gear ring is fixedly arranged on the inner wall of the barrel, and is meshed with the plurality of planet gears; The planet gears and the planet carrier are bearing-connected.

[0013] In the above technical solution, further, the stirring rod assembly comprises: An inner rod is fixedly connected to the axial end of the planet gear shaft. The outer rod is sleeved at the end of the inner rod away from the planetary gear, and can slide relative to the inner rod in the axial direction; The helical blade is arranged on the surface of the outer rod, and can push the material upward when the outer rod rotates; The limiting structure is installed between the inner rod and the outer rod, and is used for limiting the rotation between the inner rod and the outer rod; The connecting rod is connected with the ball nut bearing through the connecting ring at one end, and is connected with the bearing at the end of the outer rod away from the planetary gear at the other end; The limiting structure includes a limiting ring provided with a protrusion and a sliding block, and the first sliding groove is arranged on the surface of the inner rod, and the second sliding groove is arranged on the inner wall of the outer rod, the limiting ring is installed at the top end of the outer rod, the protrusion of the limiting ring extends into the first sliding groove, and the sliding block is freely slid in the first sliding groove and the second sliding groove.

[0014] In the above technical scheme, further: The telescopic sleeve is sleeved on the surface of the rotating shaft, and the telescopic sleeve includes an upper sleeve and a lower sleeve located on the two sides of the ball nut in the axial direction respectively; The upper sleeve is connected with the rotating shaft through the fixed ring at one end, and is connected with the ball nut at the other end, the lower sleeve is connected with the ball nut at one end, the fixed rod penetrates through the fixed ring to limit the rotation of the fixed ring, and the fixed rod is provided with a ring block connected with the other end of the lower sleeve.

[0015] In the above technical scheme, further: The scraping rod is arranged at the bottom end of the rotating shaft, the scraping rod is in S-shaped structure, and is used for pushing the material to the side away from the axis, and the discharge port is arranged at the same height as the scraping rod.

[0016] The beneficial effects of the present application are: 1. By adding nano-silica modified by silane coupling agent, the tensile strength and impact strength of the material can be significantly improved, so that the antibacterial film is more resistant to stretching and tearing during use, and the service life is prolonged.

[0017] 2. By using PET as the substrate of the antibacterial film and the transparent antibacterial master batch, the transparency of the antibacterial film is effectively ensured, so that it can meet the requirements of some application places requiring transparency, and the applicability of the antibacterial film is improved.

[0018] 3. By adopting the liftable stirring rod assembly, the material can be driven to turn up while stirring, the dead angle during stirring and mixing is reduced, the mixing effect during mixing of the material is effectively improved, uniform distribution of the components of the antibacterial film is ensured, the reduction of antibacterial effect caused by too low local antibacterial agent concentration and the influence of too high concentration on the transparency of the antibacterial film are avoided, meanwhile, the components such as nanometer silicon dioxide and dispersing agent can be uniformly distributed in the PET matrix, the reinforcing effect thereof can be fully exerted, and the antibacterial film is more resistant to stretching and tearing during use, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the production equipment of the present application; Figure 2 is a partial sectional view of the mixing mechanism of the production equipment of the present application; Figure 3 is a top view of the production equipment of the present application; Figure 4 is a sectional view of A-A in the present application; Figure 3 Figure 5 is an enlarged view of B in the present application; Figure 4 is an enlarged view of C in the present application; Figure 6 Figure 4 is an enlarged view of C in the present application; The marks in the figure are as follows: 1, barrel body; 2, discharge port; 3, extrusion mechanism; 4, feeding port; 5, conduit; 6, support; 7, rotating shaft; 70, reciprocating screw rod section; 8, stirring rod assembly; 80, inner rod; 81, outer rod; 82, helical blade; 83, limiting structure; 830, limiting ring; 831, sliding block; 832, protrusion; 84, connecting rod; 85, first sliding groove; 86, second sliding groove; 9, lifting assembly; 90, ball nut; 91, planetary gear set; 910, sun gear; 911, planet carrier; 912, planet gear; 913, ring gear; 92, guide rod; 93, fixed rod; 10, driving device; 11, upper sleeve; 12, lower sleeve; 13, fixed ring; 14, annular block; 15, scraping rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0021] Embodiment 1: The antibacterial film provided in the embodiment comprises the following components:​​ 100 parts by weight of PET, 8-15 parts by weight of transparent antibacterial masterbatch, 0.3-0.6 parts by weight of antioxidant, 0.5-1.2 parts by weight of silicone slip agent and 1.5-2.5 parts by weight of nano-silica modified by silane coupling agent; The transparent antibacterial masterbatch comprises an antibacterial agent, PET, a dispersant and an antioxidant. The silicone slip agent is polydimethylsiloxane. The antioxidant is a mixture of antioxidant 1076 and phosphite antioxidant in an ammonia weight ratio of 2:1. In the transparent antibacterial masterbatch, the antibacterial agent comprises a silver-zinc composite glass carrier preparation, the dispersant is a mixture of zinc stearate and silane coupling agent KH-560, and the antioxidant is a mixture of antioxidant 1010 and phosphite 168. The silver ion content in the silver-zinc composite glass carrier preparation is 0.3-0.5wt%, and the zinc ion content is 1.2-1.8wt%. Meanwhile, the PET is polyethylene terephthalate, the PET in the antibacterial film can be selected to have a crystallinity of ≤25%, the nano-silica modified by the silane coupling agent has a particle size of 50-80nm, and the addition amount is not more than 2wt% of the total system, the PET in the transparent antibacterial masterbatch can be selected to have a crystallinity of ≤20%, and the difference in melt index between the PET in the antibacterial film and the PET in the transparent antibacterial masterbatch is ≤0.5g / 10min (280℃, 2.16kg), and the viscosity of the silicone slip agent is 500-1000cSt.

[0022] As can be seen from the embodiment, by adding nano-silica modified by a silane coupling agent, the tensile strength and impact strength of the material can be significantly improved, so that the antibacterial film is more resistant to stretching and tearing during use, and the service life is prolonged. By using PET as the substrate for both the antibacterial film and the transparent antibacterial masterbatch, the antibacterial property of the antibacterial film is effectively ensured, and at the same time, the antibacterial film has good transparency, so that it can meet the requirements of some application places that require transparency, and the applicability of the antibacterial film is improved.

[0023] Example 2 The embodiment provides a production equipment of an antibacterial film, which comprises: A mixing mechanism is used for mixing the components of the antibacterial film and the components of the transparent antibacterial masterbatch before melting, and comprises a barrel 1, and a discharge port 2 is formed in the side of the bottom of the barrel 1. An extrusion mechanism 3 is connected to the discharge port 2 of the mixing mechanism and is used for melting and extruding the mixed components. A conduit 5 is connected to the discharge port 2 and the inlet 4 respectively. Support 6 is installed on the side of extrusion mechanism 3 and is used to mount and support the mixing mechanism and extrusion mechanism 3.

[0024] The mixing mechanism comprises a rotating shaft 7, a stirring rod assembly 8 installed on the rotating shaft 7, a driving device 10 used to drive the rotating shaft 7 to rotate, and a lifting assembly 9 used to connect the rotating shaft 7 and the stirring rod assembly 8 and capable of driving the stirring rod assembly 8 to lift when the rotating shaft 7 rotates. Meanwhile, the barrel 1 is also provided with a feeding opening, and covers are arranged at the feeding opening and the discharging opening 2 to control the opening and closing of the feeding opening and the discharging opening 2. The driving device 10 can be a motor, and the specific structure of the extrusion mechanism 3 is a mature technology known to those skilled in the art from traditional motors and screw extruders, which will not be described here. Further, the extrusion mechanism 3 comprises an extrusion die, a casting forming device and a stretching device when used for mixing the components of the antibacterial film, and comprises an extrusion die, a cooling system (water cooling tank or air cooling system) and a pelletizer when used for mixing the components of the transparent master batch, which are all conventional settings and will not be described here.

[0025] As can be seen from the embodiment, by using the lifting stirring rod assembly 8, the material can be lifted while stirring, reducing the dead angle during stirring and mixing, thereby effectively improving the mixing effect during mixing of the material, ensuring uniform distribution of the components of the antibacterial film, avoiding reduction of antibacterial effect caused by too low local antibacterial agent concentration and influence of too high concentration on the transparency of the antibacterial film, and uniformly distributing the components such as nano-silicon dioxide and dispersing agent in the PET matrix to fully play the reinforcing role and further ensure that the antibacterial film is more resistant to stretching and tearing during use, prolonging the service life.

[0026] Embodiment 3 The embodiment provides a production equipment of antibacterial film, which has the following technical features in addition to the technical solutions of the above-mentioned embodiments. The ball nut 90 is sleeved on the rotating shaft 7, and the reciprocating screw rod segment 70 for reciprocating lifting of the ball nut 90 is arranged on the rotating shaft 7, and the stirring rod assembly 8 is bearing-connected to the ball nut 90; The planetary gear set 91 is installed on the barrel 1 and is used to drive the stirring rod assembly 8 to revolve around the rotating shaft 7 and the stirring rod assembly 8 to rotate by itself; The guide rod 92 is arranged in parallel to the rotating shaft 7, penetrates through the ball nut 90, and is used to limit the rotation of the ball nut during lifting; The fixed rod 93 is connected to the inner wall of the barrel 1 at one end and connected to the guide rod 92 at the other end, and is used to fixedly install the guide rod 92 in the barrel 1; The specific structure of the ball nut 90 is a mature technology in the art, which can be known by those skilled in the art from a conventional reciprocating screw rod transmission device, and will not be described here.

[0027] It can be seen from the embodiment that, by arranging the planetary gear set 91, the stirring rod assembly 8 can revolve and rotate around the rotating shaft 7 while lifting, which can further improve the mixing effect of the material mixing, ensure uniform dispersion of each component, reduce the possibility of local dead angle and agglomeration, and avoid significant impact on the antibacterial property and transparency of the antibacterial film. The guide rod 92 facilitates limiting the rotation of the ball nut 90, so that the ball nut 90 can be driven to reciprocate and lift by the reciprocating screw rod segment 70 when the rotating shaft 7 rotates, and the fixing rod 93 can install and fix the guide rod 92.

[0028] Embodiment 4: The embodiment provides a production equipment of an antibacterial film, which has the following technical features in addition to the technical solutions of the above-mentioned embodiments: the planetary gear set 91 comprises: A sun gear 910 is sleeved on the rotating shaft 7 and fixedly connected with the rotating shaft 7; A planet carrier 911 is installed on the axial side of the sun gear 910 and bearing-connected with the sun gear 910; A plurality of planet gears 912 are arranged around the sun gear 910 and meshingly connected with the sun gear 910; A gear ring 913 is fixedly arranged on the inner wall of the barrel 1 and meshingly connected with the plurality of planet gears 912. The planet gears 912 and the planet carrier 911 are bearing-connected.

[0029] It can be seen from the embodiment that, by driving the rotating shaft 7 to rotate by the driving device 10, the sun gear 910 is driven to rotate, and the plurality of planet gears 912 are driven by meshing, and the planet gears 912 are simultaneously revolved and rotated due to the limitation of the gear ring 913, so that the stirring rod assembly 8 is driven to revolve and rotate, thereby effectively ensuring the stirring and mixing effect of the material.

[0030] Embodiment 5: The embodiment provides a production equipment of an antibacterial film, which has the following technical features in addition to the technical solutions of the above-mentioned embodiments: the stirring rod assembly 8 comprises: An inner rod 80 is fixedly connected at an axial end to the axis of the planet gear 912; An outer rod 81 is sleeved on the end of the inner rod 80 away from the planet gear 912 and can relatively slide with the inner rod 80 in the axial direction; A helical blade 82 is arranged on the surface of the outer rod 81 and can push the material upward when the outer rod 81 rotates. The limiting structure 83 is installed between the inner rod 80 and the outer rod 81 and is used for rotation limitation between the inner rod 80 and the outer rod 81; The connecting rod 84 is provided with a connecting ring at one end and is bearing-connected with the ball nut 90, and the other end is bearing-connected with the outer rod 81 away from the one end of the planetary gear 912; The limiting structure 83 includes the limiting ring 830 provided with the protrusion 832 and the sliding block 831, and the first sliding groove 85 is arranged on the surface of the inner rod 80 and the second sliding groove 86 is arranged on the inner wall of the outer rod 81, and the limiting ring 830 is installed at the top end of the outer rod 81, the protrusion 832 of which extends into the first sliding groove 85, and the sliding block 831 is freely slid in the first sliding groove 85 and the second sliding groove 86 at both ends; Meanwhile, the helical blade 82 and the outer rod 81 can be welded, and the inner rod 80 and the planetary gear 912 can be interference fit.

[0031] It can be seen from the embodiment that, by adopting the inner rod 80 and the outer rod 81 capable of relatively sliding in the axial direction, the stirring rod assembly 8 rotates and revolves while ascending and descending, which effectively improves the uniformity of stirring and mixing, and the arrangement of the helical blade 82 can not only stir the material when the stirring rod assembly 8 revolves, but also push the material to turn over when the outer rod 81 rotates, thereby further improving the mixing effect and ensuring the mixing effect and efficiency, and the connecting rod 84 facilitates the connection between the stirring rod assembly 8 and the ball nut 90, stably connects one end of the outer rod 81 of the stirring rod assembly 8, improves the stability of the structure, and the one end of the connecting rod 84 is bearing-connected with the ball nut 90 and the other end is bearing-connected with the outer rod 81, so that the rotation and revolution of the stirring rod assembly 8 are not limited, thereby effectively ensuring the feasibility of the device; Meanwhile, the limiting structure 83 between the inner rod 80 and the outer rod 81 adopts the limiting ring 830 provided with the protrusion 832 and the sliding block 831 freely sliding in the first sliding groove 85 and the second sliding groove 86, so that the inner rod 80 can drive the outer rod 81 to rotate while revolving with the planetary gear 912, and when the inner rod 80 and the outer rod 81 relatively slide in the axial direction, the two force points of the protrusion 832 and the sliding block 831 are always kept in the axial direction, thereby improving the driving stability of the inner rod 80 to the outer rod 81 and improving the stability of the structure.

[0032] Embodiment 6: The embodiment provides a production equipment of an antibacterial film, in addition to the technical solutions of the above-mentioned embodiments, and has the following technical features: The surface of the rotating shaft 7 is sleeved with a telescopic sleeve, and the telescopic sleeve includes an upper sleeve 11 and a lower sleeve 12 located on the two sides of the ball nut 90 in the axial direction; Wherein, the upper sleeve 11 is provided with a fixed ring 13 at one end and connected with the bearing of the rotating shaft 7, and the other end is connected with the ball nut 90, the lower sleeve 12 is connected with the ball nut 90 at one end, and the guide rod 92 penetrates the fixed ring 13 to limit the turning direction of the fixed ring 13, and the fixed rod 93 is provided with an annular block 14 for connecting with the other end of the lower sleeve 12.

[0033] Meanwhile, the telescopic sleeve can be made of rubber material, and the upper sleeve 11 and the lower sleeve 12 at both ends can be connected by adhesion or clamping.

[0034] It can be seen from the embodiment that, by the setting of the telescopic sleeve, the embedding of the powdery material into the reciprocating screw rod section 70 and the ball nut 90 can be avoided when the ball nut 90 is lifted and the stirring rod assembly 8 stirs the material, the occurrence of jamming is increased, the equipment failure is avoided, and the service life is effectively prolonged. For the fixation of the telescopic sleeve, on the one hand, the upper sleeve 11 and the lower sleeve 12 are connected with the ball nut 90, so that the upper sleeve 11 and the lower sleeve 12 can move along the axial direction to deform following the ball nut 90. On the other hand, the upper sleeve 11 is connected with the rotating shaft 7 by the bearing, and the fixed ring 13 is limited in the radial direction by the guide rod 92, which cooperates with the bearing connection to limit the axial movement of the fixed ring 13, so as to stabilize the end of the upper sleeve 11 when the ball nut 90 is lifted, facilitate the deformation of the upper sleeve 11, and ensure the shielding effect of the powdery material on the reciprocating screw rod section 70 and the ball nut 90. The lower sleeve 12 is fixedly installed by the annular block 14 at the fixed rod 93, which not only stabilizes the end of the lower sleeve 12 when the ball nut 90 is lifted, facilitates the deformation of the lower sleeve 12, ensures the shielding effect of the powdery material on the reciprocating screw rod section 70 and the ball nut 90, but also improves the connection strength between the fixed rod 93 and the guide rod 92 to a certain extent. Moreover, the fixed ring 13 and the bearing connection between the fixed ring 13 and the rotating shaft 7, in cooperation with the annular block 14, can effectively improve the structural strength and stability of the guide rod 92 after installation.

[0035] Embodiment 7: The embodiment provides a production equipment of an antibacterial film, which has the following technical features in addition to the technical solutions of the above-mentioned embodiments. The bottom end of the rotating shaft 7 is provided with a scraping rod 15, and the scraping rod 15 is in an S-shaped structure and is used to push the material away from the axis, and the discharge port 2 is arranged at the same height as the scraping rod 15. Wherein, the scraping rod 15 and the rotating shaft 7 can be fastened by bolts.

[0036] It can be seen from the embodiment that the S-shaped structure is arranged at the bottom end of the rotating shaft 7, so that after the components are mixed, the material can be continuously pushed to the discharge port 2 by the scraper 15 through continuous rotation, thereby facilitating the pushing of the material into the extrusion mechanism 3 for melting and extrusion.

[0037] The embodiments of the present application are described above in combination with the drawings, and the embodiments and features in the embodiments in the present application can be combined with each other without conflict, and the present application is not limited to the above-described specific embodiments, which are only illustrative but not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

Claims

1. An antibacterial film, characterized in that Includes the following components: 100 parts by weight of PET, 8-15 parts by weight of transparent antibacterial masterbatch, 0.3-0.6 parts by weight of antioxidant, 0.5-1.2 parts by weight of organosilicon lubricant and 1.5-2.5 parts by weight of nano-silica modified with a silane coupling agent; The transparent antibacterial masterbatch comprises an antibacterial agent, PET, a dispersant and an antioxidant.

2. The antibacterial film according to claim 1, characterized in that: The organosilicon lubricant is polydimethylsiloxane.

3. The antibacterial film according to claim 1, wherein: The antioxidant is a compound of antioxidant 1076 and phosphite antioxidant ammonia in a weight ratio of 2:

1.

4. The antibacterial film according to claim 1, wherein: In the transparent antibacterial masterbatch, the antibacterial agent includes a silver-zinc composite glass carrier preparation, the dispersant is a compound of zinc stearate and silane coupling agent KH-560, and the antioxidant is a compound of antioxidant 1010 and phosphite 168; The silver-zinc composite glass carrier preparation has a silver ion content of 0.3-0.5 wt % and a zinc ion content of 1.2-1.8 wt %.

5. A production device for the antibacterial film according to any one of claims 1 to 4, characterized in that: include: A mixing mechanism is used for mixing the components of the antibacterial film and the components of the transparent antibacterial masterbatch before melting, and comprises a barrel (1) with a discharge port (2) provided on the bottom side of the barrel (1); An extrusion mechanism (3) is provided with a feed port (4) connected to the discharge port (2) of the mixing mechanism and is used to melt and extrude the mixed components; A conduit (5) having two ends connected to the discharge port (2) and the feed port (4); A bracket (6) is mounted on the side of the extrusion mechanism (3) and is used to support the mixing mechanism and the extrusion mechanism (3); The mixing mechanism comprises a rotating shaft (7), a stirring rod assembly (8) mounted on the rotating shaft (7), a driving device (10) for driving the rotating shaft (7) to rotate, and a lifting assembly (9) for connecting the rotating shaft (7) and the stirring rod assembly (8), wherein the lifting assembly (9) can drive the stirring rod assembly (8) to rise and fall when the rotating shaft (7) rotates.

6. The production equipment of the antibacterial film according to claim 5, characterized in that: The lifting assembly (9) comprises: The ball nut (90) is sleeved on the rotating shaft (7), and a reciprocating screw rod section (70) for the ball nut (90) to be lifted and reciprocated is provided on the rotating shaft (7), and the bearing of the stirring rod assembly (8) is connected to the ball nut (90); A planetary gear set (91) is mounted on the barrel (1) and is used to drive the stirring rod assembly (8) to revolve around the rotating shaft (7) and the stirring rod assembly (8) to rotate itself; A guide rod (92) is arranged parallel to the rotating shaft (7) and passes through the ball nut (90) and is used to limit the rotation of the roller nut when it is raised or lowered; The fixing rod (93) has one end connected to the inner wall of the barrel body (1) and the other end connected to the guide rod (92) and is used for fixing the guide rod (92) in the barrel body (1).

7. The production equipment of the antibacterial film according to claim 6, characterized in that: The planetary gear set (91) comprises: A sun gear (910) is sleeved on the rotating shaft (7) and fixedly connected to the rotating shaft (7); A planet carrier (911) is mounted on one axial side of the sun gear (910) and is connected to a bearing of the sun gear (910); A plurality of planetary gears (912) are provided, and are arranged around the sun gear (910) and meshedly connected with the sun gear (910); A gear ring (913) is fixedly arranged on the inner wall of the barrel (1) and meshes with the plurality of planetary gears (912); The planetary gears (912) and the planetary carrier (911) are connected by bearings.

8. The production equipment of the antibacterial film according to claim 7, characterized in that: The stirring rod assembly (8) comprises: An inner rod (80) has one axial end fixedly connected to the axis of the planetary gear (912); The outer rod (81) is sleeved on an end of the inner rod (80) away from the planetary gear (912) and can slide relative to the inner rod (80) in the axial direction; The spiral blade (82) is provided on the surface of the outer rod (81) and is capable of pushing the material upward and stirring it when the outer rod (81) rotates. A limiting structure (83) is installed between the inner rod (80) and the outer rod (81) and is used to limit the rotation between the inner rod (80) and the outer rod (81); A connecting rod (84) having a connecting ring at one end connected to the bearing of the ball nut (90) and the other end connected to the bearing of the end of the outer rod (81) away from the planetary gear (912); The limiting structure (83) includes a limiting ring (830) provided with a protrusion (832) and a slider (831), and a first slide groove (85) is provided on the surface of the inner rod (80) and a second slide groove (86) is provided on the inner wall of the outer rod (81), and the limiting ring (830) is installed on the top of the outer rod (81), and its protrusion (832) extends into the first slide groove (85), and the two ends of the slider (831) slide freely in the first slide groove (85) and the second slide groove (86).

9. The antibacterial film production equipment according to claim 6, characterized in that: The rotating shaft (7) is provided with a telescopic sleeve on its surface, and the telescopic sleeve comprises an upper sleeve (11) and a lower sleeve (12) respectively located on both axial sides of the ball nut (90); One end of the upper sleeve (11) is provided with a fixing ring (13) connected to the bearing of the rotating shaft (7), and the other end is connected to the ball nut (90). One end of the lower sleeve (12) is connected to the ball nut (90), and the guide rod (92) passes through the fixing ring (13) to limit the steering of the fixing ring (13), and the fixing rod (93) is provided with an annular block (14) for connecting to the other end of the lower sleeve (12).

10. The antibacterial film production equipment according to claim 5, characterized in that: A scraper (15) is provided at the bottom end of the rotating shaft (7), and the scraper (15) is in an S-shaped structure and is used to push the material to a side away from the axis, and the discharge port (2) and the scraper (15) are arranged at the same height.

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