CN111171448B - Sterilization coated plastic plate and preparation method and application thereof - Google Patents
Sterilization coated plastic plate and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a sterilization coated plastic plate which is characterized in that at least one surface of the sterilization coated plastic plate is coated with a sterilization film, the sterilization film comprises a sterilization nanocomposite, and the sterilization nanocomposite is composed of fine particles with the particle size of 30-50 nm, and the sterilization nanocomposite comprises, by weight, 20-80% of silver, 10-50% of copper oxide and 10-50% of zinc oxide. The sterilization film plastic plate is covered on the surface of the plate, so that the sterilization film plastic plate has strong sterilization capability, and the viable count obtained by the sterilization film plastic plate after being detected and inoculated by an authority mechanism and placed for 24 hours is less than 1cfu/cm 2 The bacterial residue number on the surface is almost 0, the sterilization rate is close to 100%, and the method can be applied to the inner container of the refrigerator.
Description
Technical Field
The invention belongs to the technical field of new plastic materials, and particularly relates to a sterilization coated plastic plate and a preparation method and application thereof.
Background
Because plastics have the characteristics of easy molding, light weight, stability and the like, the plastic is used as a manufacturing raw material of various daily necessities, especially in a bathroom, a kitchen, a hospital and other environments which are easy to wet, and the plastic plate is an intermediate product for processing downstream products, for example, the inner container of a refrigerator, namely PS and ABS plastic particles are melted firstly, pressed into the plate, and then the plate is subjected to plastic suction molding on a die. Plastic sheets are widely used as more ideal materials for articles. However, the natural defect of the plastic plate is that bacterial mould is easy to grow on the surface, and the plastic plate is a nutrition source for microorganism growth and propagation. Most plastic plate products have no additional functions of antibiosis, deodorization or purification, and the like, have the defects of easiness in breeding bacteria, color change or peculiar smell generation after long-term use, and although plastic plate products with the antibiosis function, such as antibiosis chopping boards, antibiosis medical appliances, antibiosis refrigerators and the like, are already on the market, the products are mostly prepared by mixing antibiosis agents and common plastic particles to prepare antibacterial master batches, and when the plastic products are processed, the master batches and the common particles are mixed according to a certain proportion, and the whole inside of the plastic products is provided with antibacterial components. Because of the high cost of the antibacterial agent, compared with the use amount of the plastic raw material, the addition amount of the antibacterial agent is usually very small, and has the doubt that the antibacterial effect is relatively unclear. Meanwhile, if the surface of the plate cannot be sterilized and only can be sterilized, bacteria can quickly survive on the plastic, gradually permeate into the plastic, and can not be cleaned. Therefore, development of a more economical and efficient sterilization coated plastic plate is needed.
Disclosure of Invention
Based on the above, the invention provides a sterilization film plastic plate, a preparation method and application thereof, and aims to provide a sterilization film plastic plate, wherein a sterilization film is covered on the surface of the plate, so that the sterilization film plastic plate has strong sterilization capability, and the viable count obtained by the sterilization film plastic plate after being detected and inoculated by an authority mechanism and placed for 24 hours is less than 1cfu/cm 2 Bacteria on the surfaceThe residual number is almost 0, and the sterilization rate is close to 100%. Meanwhile, in the process of processing the plastic product by the plate, the film and the plate are synchronously stretched and expanded, so that the surface of the plastic product is covered, the plastic product is formed at one step, the film and the plate are integrated into a whole and cannot be peeled, and the cost of the sterilization material is saved.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the sterilization coated plastic plate consists of a bottom plate and a sterilization film, wherein at least one surface of the bottom plate is coated with the sterilization film, the sterilization film comprises a sterilization nanocomposite, and the sterilization nanocomposite consists of fine particles with the particle size of 30-50 nm, and the sterilization nanocomposite comprises, by weight, 20-80% of silver, 10-50% of copper oxide and 10-50% of zinc oxide.
The technical scheme of the sterilization coated plastic plate is further improved as follows:
1. in the technical scheme, the sterilizing film is coated on the two sides of the bottom plate of the sterilizing film plastic plate.
2. In the technical scheme, the sterilizing film comprises the following components in percentage by weight:
50 to 80 percent of sterilizing plastic master batch,
15 to 49 percent of common plastic particles,
1 to 5 percent of additive,
the sterilization plastic master batch consists of 95-99% of plastic powder and 1-5% of sterilization nano composite material.
3. In the technical scheme, the additive is methyl silicone oil.
4. In the technical scheme, the plastic powder of the sterilization plastic master batch is one or more of polyethylene, polypropylene, polystyrene, polyvinyl chloride and ABS plastic.
5. In the technical scheme, the material of the bottom plate of the sterilization film plastic plate and the material of the plastic powder of the sterilization plastic master batch are the same plastic.
6. In the technical scheme, the thickness of the sterilization film coated on the surface of the sterilization film coated plastic plate is 5-100 mu m.
7. In the technical scheme, the whole thickness of the sterilization film plastic plate is 1-20 mm.
The technical scheme of the method adopted by the invention is as follows: a preparation method of a sterilization coated plastic plate is characterized in that an extrusion coating machine is adopted, a base plate is extruded and molded, a sterilization film in a hot melting state is attached to the base plate, and the sterilization coated plastic plate is integrated after cooling, so that an integrated sterilization coated plastic plate is formed.
1. In the technical scheme, the preparation method of the sterilization coated plastic plate comprises the following steps:
s01, smashing the sterilized plastic master batch into powder;
s02, crushing common plastic particles into powder;
s03, preparing adhesive emulsion by using an additive and water;
s04, carrying out high-speed stirring and mixing on the crushed sterilization plastic master batch powder, the common plastic particle powder and the adhesive emulsion to obtain a sterilization film mixture, and extruding to obtain a sterilization film;
s05, adding the mixture obtained in the step S04 into an extrusion laminating machine, extruding and molding a bottom plate, adhering a sterilizing film in a hot melting state on the bottom plate, and cooling and integrating to form an integrated sterilizing laminated plastic plate.
1. In the above technical solution, in the step S03, the additive is methyl silicone oil.
2. In the above technical scheme, the weight ratio of the additive to water in the step S03 is 1:1.
3. in the above technical scheme, in the step S05, the film is heat-treated while the sterilizing film in a hot-melt state is attached to the base plate. The water in the emulsion in the formula is evaporated through heating treatment to form an ultrathin film which is not easy to achieve by other conventional methods, and meanwhile, a large number of tiny holes are formed on the surface of the film, so that the contact area with bacteria is increased.
4. In the technical scheme, the sterilization plastic master batch in the step S01 is crushed into 100-200 meshes.
5. In the above technical scheme, in the step S02, the common plastic particles are crushed to 100-200 mesh.
The application of the sterilization coated plastic plate in plastic products.
1. The sterilization film plastic plate is applied to a plastic liner of a refrigerator.
2. The application of the sterilization film-covered plastic plate in plastic products is used as an interior decoration plate in clean spaces such as medical operating rooms and wards, food and drug production plants, high-tech electronic product production plants and the like.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the sterilization film of the sterilization film plastic plate is covered on the surface of the plate, so that the sterilization film plastic plate has strong sterilization capability, bacteria can not survive all the time and are unlikely to penetrate, and the viable count obtained after the sterilization film plastic plate is detected and inoculated by an authority mechanism and placed for 24 hours is less than 1cfu/cm 2 The bacterial residue number on the surface is almost 0, and the sterilization rate is close to 100%.
2. The preparation method of the sterilization coated plastic plate adopts an extrusion coating machine, and the sterilization film in a hot melting state is attached to the bottom plate while the bottom plate is extruded and molded, and is integrated after cooling, so that the integrated sterilization coated plastic plate is formed, and the film and the plate are synchronously stretched and expanded in the process of processing the plate into a plastic product, so that the surface of the plastic product is covered, the plastic product is molded once, the film and the plate are integrated and cannot be peeled, and the cost of sterilization materials is saved.
3. According to the preparation method of the sterilization coated plastic plate, in the process of machining the plate by using machine equipment, the water in the emulsion in the formula is evaporated through modification heating treatment of the film forming part, so that an ultrathin film which is not easy to achieve by other conventional methods is formed, and meanwhile, a large number of tiny holes are formed on the surface of the film, so that the contact area with bacteria is increased.
Drawings
FIG. 1 is a flow chart of a preparation method of the sterilization coated plastic plate.
FIG. 2 is a flow chart of a preparation method of the sterilization plastic master batch.
Detailed Description
In order to make the technical problems to be solved, the technical scheme and the beneficial effects of the invention more clear, the invention is further described in detail by combining the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a flowchart of a preparation method of the sterilization coated plastic sheet material of the present invention, and fig. 2 is a flowchart of a preparation method of the sterilization plastic master batch of the present invention.
Embodiments of the present invention will be described in detail with reference to fig. 1 to 2.
Example 1
The preparation method of the sterilization coated plastic plate comprises the following steps:
s01, crushing the sterilized plastic master batch to 100-200 meshes; wherein the high-density polypropylene sterilization plastic master batch is prepared by the following steps:
step one, weaving and calendaring metal silver, copper and zinc wires into metal wire rods; the composite metal wire rod is used as an anode conductor of a direct current power supply, and an arc is formed between the composite metal wire rod and a cathode, so that the tip of the composite metal wire rod used as the anode conductor is gasified and evaporated to generate smoke metal atomic groups, and silver metal atoms are fully mixed with copper, zinc and oxygen atoms to form a gaseous alloy; cooling the gaseous alloy by using air flow, and collecting cooled powder to obtain a nanocomposite, wherein the nanocomposite comprises, by weight, 70% of silver, 15% of copper oxide and 15% of zinc oxide; the nano composite material powder forms soft agglomerate of 40 microns, consists of fine grains with the grain size of 30 nm-50 nm, and is a silver, copper oxide and zinc oxide compound. The nano composite material prepared by gasification evaporation, mixing and cooling does not need chemical raw materials such as acid, alkali and the like, and does not have pollutants such as waste water, waste gas, waste residue and the like; the production process is simple and controllable, the energy consumption is low, the large-scale production is convenient, the product cleanliness is high, and the quality is ensured.
Step two, crushing and refining the high-density polypropylene into powder of 200-500 meshes; the miniaturization treatment of the plastic material particles is beneficial to the uniform distribution of the nanocomposite in a plastic system, and the sterilization effect of the nanocomposite is further improved.
Dispersing the nanocomposite obtained in the step one in water, and repeatedly impacting and dispersing the nanocomposite for 60 minutes at an ultrasonic frequency of 40K-120K by using variable-frequency ultrasonic equipment to obtain a nanocomposite suspension;
step four, stirring the nanocomposite suspension obtained in the step three and the high-density polypropylene powder obtained in the step S02 at a high speed, and uniformly mixing to enable the dispersed nanocomposite particles to be attached and wrapped on the surfaces of the high-density polypropylene powder particles; wherein, the high-density polypropylene powder is 96 percent and the sterilizing nanocomposite is 4 percent;
and fifthly, drying for 24 hours by adopting an air energy heat pump dryer, and melting, granulating and forming the mixed powder by using a screw extruder to prepare the sterilization plastic master batch.
S02, crushing the high-density polypropylene particles to 100-200 meshes to obtain high-density polypropylene plastic powder;
s03, preparing adhesive emulsion by using methyl silicone oil and water; the weight ratio of the additive to the water is 1:1.
s04, mixing 50% of crushed bactericidal plastic powder, 45% of high-density polypropylene powder and 5% of methyl silicone oil emulsion at a high speed to obtain a mixture;
s05, adding the mixture obtained in the step S04 into an extrusion laminating machine, extruding and molding a bottom plate, adhering a sterilizing film in a hot melting state on the bottom plate, and cooling and integrating to form an integrated sterilizing laminated plastic plate. In the process of processing the plate by machine equipment, the water in the emulsion in the formula is evaporated through refitting and heating treatment on the film forming part of the extrusion film coating machine, so that an ultrathin film which is not easy to achieve by other conventional methods is formed, the whole thickness of the sterilization film plastic plate is 3mm, the thickness of the sterilization film coated on the surface of the bottom plate is 10 mu m, and the sterilization film plastic plate is made of high-density polypropylene.
Example 2
The preparation method of the sterilization coated plastic plate comprises the following steps:
s01, smashing the sterilized plastic master batch to 100-200 meshes; wherein the sterilization plastic master batch is prepared by the following steps:
step one, weaving and calendaring metal silver, copper and zinc wires into metal wire rods; the composite metal wire rod is used as an anode conductor of a direct current power supply, and an arc is formed between the composite metal wire rod and a cathode, so that the tip of the composite metal wire rod used as the anode conductor is gasified and evaporated to generate smoke metal atomic groups, and silver metal atoms are fully mixed with copper, zinc and oxygen atoms to form a gaseous alloy; cooling the gaseous alloy by using air flow, and collecting cooled powder to obtain a nanocomposite, wherein the nanocomposite comprises, by weight, 70% of silver, 15% of copper oxide and 15% of zinc oxide; the nano composite material powder forms soft agglomerate of 40 microns, consists of fine grains with the grain size of 30 nm-50 nm, and is a silver, copper oxide and zinc oxide compound.
Step two, crushing and refining the high-density polypropylene and the high-density polyethylene to powder of 200-500 meshes; the weight ratio of the high density polypropylene to the high density polyethylene is 1:1.
Dispersing the nanocomposite obtained in the step one in water, adding colored titanium dioxide, repeatedly impacting and dispersing the nanocomposite for 60 minutes at an ultrasonic frequency of 40-120K by using variable-frequency ultrasonic equipment to obtain a nanocomposite suspension;
step four, stirring the nanocomposite suspension obtained in the step three and the high-density polypropylene and high-density polyethylene mixed powder obtained in the step S02 at a high speed, and uniformly mixing to enable the dispersed nanocomposite particles to be adhered and wrapped on the surfaces of the high-density polypropylene and high-density polyethylene mixed powder particles; wherein the mixed powder of the high-density polypropylene and the high-density polyethylene is 96 percent, the sterilizing nano composite material is 2 percent, and the colored titanium dioxide is 2 percent;
and fifthly, drying for 24 hours by adopting an air energy heat pump dryer, and melting, granulating and forming the mixed powder by using a screw extruder to prepare the sterilization plastic master batch.
S02, mixing and crushing high-density polypropylene and high-density polyethylene plastic particles according to a weight ratio of 1:1 to 100-200 meshes, so as to obtain mixed plastic powder;
s03, preparing adhesive emulsion by using methyl silicone oil and water; the weight ratio of the additive to the water is 1:1.
s04, mixing 80% of crushed sterilization plastic powder, 18% of mixed plastic powder and 2% of methyl silicone oil emulsion at a high speed to obtain a mixture;
s05, adding the mixture obtained in the step S04 into an extrusion laminating machine, extruding and molding a bottom plate, adhering a sterilizing film in a hot melting state on the bottom plate, and cooling and integrating to form an integrated sterilizing laminated plastic plate. The whole thickness of the sterilization film plastic plate is 5mm, the thickness of the sterilization film coated on the surface of the bottom plate is 20 mu m, and the material of the plate is the same as that of the sterilization plastic master batch.
Example 3
The preparation method of the sterilization coated plastic plate comprises the following steps:
s01, crushing the sterilized polyvinyl chloride plastic master batch to 100-200 meshes; wherein the sterilization polyvinyl chloride plastic master batch is prepared by the following steps:
step one, weaving and calendaring metal silver, copper and zinc wires into metal wire rods; the composite metal wire rod is used as an anode conductor of a direct current power supply, and an arc is formed between the composite metal wire rod and a cathode, so that the tip of the composite metal wire rod used as the anode conductor is gasified and evaporated to generate smoke metal atomic groups, and silver metal atoms are fully mixed with copper, zinc and oxygen atoms to form a gaseous alloy; cooling the gaseous alloy by using air flow, and collecting cooled powder to obtain a nanocomposite, wherein the nanocomposite comprises 80 weight percent of silver, 10 weight percent of copper oxide and 10 weight percent of zinc oxide; the nano composite material powder forms soft agglomerate of 40 microns, consists of fine grains with the grain size of 30 nm-50 nm, and is a silver, copper oxide and zinc oxide compound.
Step two, crushing and refining polyvinyl chloride into powder of 200-500 meshes;
dispersing the nanocomposite obtained in the step one in water, and repeatedly impacting and dispersing the nanocomposite for 60 minutes at an ultrasonic frequency of 40K-120K by using variable-frequency ultrasonic equipment to obtain a composite nanomaterial suspension;
step four, stirring the nanocomposite suspension obtained in the step three and the polyvinyl chloride powder obtained in the step S02 at a high speed, and uniformly mixing to enable the dispersed nanocomposite particles to be attached and wrapped on the surfaces of the polyvinyl chloride powder particles; wherein, the polyvinyl chloride powder is 98 percent and the sterilizing nano composite material is 2 percent;
and fifthly, drying for 24 hours by adopting an air energy heat pump dryer, and melting, granulating and forming the mixed powder by using a screw extruder to prepare the sterilization plastic master batch.
S02, crushing polyvinyl chloride plastic particles to 100-200 meshes to obtain polyvinyl chloride plastic powder;
s03, preparing adhesive emulsion by using methyl silicone oil and water; the weight ratio of the additive to the water is 1:1.
s04, mixing 60% of crushed sterilization plastic powder, 37% of common plastic powder and 3% of methyl silicone oil emulsion at a high speed to obtain a mixture;
s05, adding the mixture obtained in the step S04 into an extrusion laminating machine, extruding and molding a bottom plate, adhering a sterilizing film in a hot melting state on the bottom plate, and cooling and integrating to form an integrated sterilizing laminated plastic plate. The whole thickness of the sterilization film plastic plate is 7mm, the thickness of the sterilization film covered on the surface of the bottom plate is 30 mu m, and the bottom plate is made of polyvinyl chloride.
Example 4
A preparation method of a sterilization coated plastic plate comprises the following steps:
s01, crushing plastic particles to 200-500 meshes; wherein the sterilizing ABS plastic master batch is prepared by the following steps:
step one, braiding and calendaring metallic silver, copper and zinc wires into metal wire rods, taking the composite metal wire rods as anode conductors of a direct current power supply and forming electric arcs with cathodes, enabling the tips of the composite metal wire rods as the anode conductors to be gasified and evaporated to generate vaporous metal atomic groups, and fully mixing silver metal atoms with copper, zinc and oxygen atoms to form gaseous alloy; cooling the gaseous alloy by using air flow, and collecting cooled powder to obtain a nanocomposite, wherein the nanocomposite comprises 65 weight percent of silver, 25 weight percent of copper oxide and 10 weight percent of zinc oxide; the nano composite material powder forms soft agglomerate of 40 microns, consists of fine grains with the grain size of 30 nm-50 nm, and is a silver, copper oxide and zinc oxide compound.
Step two, crushing and refining the ABS plastic into powder of 200-500 meshes; the weight ratio of the ABS plastic to the polyvinyl chloride is 1:2.
Step three, injecting a proper amount of ultra-pure water into the ultrasonic container, wherein the liquid level is not lower than the minimum required by the working of the ultrasonic transducer; starting a stirring motor (the motor is a variable-frequency speed reducing motor with low rotation speed and large torque), controlling the rotation speed of the motor to be less than 100 rotations per minute, and adding nanocomposite powder to make the nanocomposite fully contact with water under the condition that liquid does not form a minimum vortex lower than the working requirement of an ultrasonic transducer; forming a nano material suspension, starting ultrasonic wave, working at a lower frequency, setting the procedure to be sequentially carried out from low frequency to high frequency of 40K-60K-80K-100K-120K, wherein the working time of each frequency is 5min, and then carrying out two periods from high frequency to low frequency, and the total time is 100min. Gradually dispersing the body to present independent nano particles; the agglomeration formed by the nano materials is deagglomerated by using variable frequency ultrasonic equipment so as to ensure that the dispersion of the nano composite materials can be realized.
Step four, stirring the nanocomposite suspension obtained in the step three and the ABS plastic powder obtained in the step S02 at a high speed, and uniformly mixing to enable the dispersed nanocomposite particles to be attached and wrapped on the surfaces of the ABS plastic and polyvinyl chloride mixed powder particles; wherein, 98% of ABS plastic and 2% of bactericidal nanocomposite;
and fifthly, drying for 24 hours by adopting an air energy heat pump dryer, and melting, granulating and forming the mixed powder by using a screw extruder to prepare the sterilization plastic master batch.
S02, crushing the ABS plastic particles to 100-200 meshes to obtain ABS plastic powder;
s03, preparing adhesive emulsion by using methyl silicone oil and water; the weight ratio of the additive to the water is 1:1.
s04, carrying out high-speed stirring and mixing on 70% of crushed sterilization plastic master batch powder, 28% of ABS plastic powder and 2% of methyl silicone oil emulsion to obtain a mixture;
s05, adding the mixture obtained in the step S04 into an extrusion laminating machine, extruding and molding a bottom plate, adhering a sterilizing film in a hot melting state on the bottom plate, and cooling and integrating to form an integrated sterilizing laminated plastic plate. The whole thickness of the sterilization film plastic plate is 7mm, the thickness of the sterilization film coated on the surface of the bottom plate is 30 mu m, and the sterilization film plastic plate is made of ABS plastic.
The sterilization coated plastic plates of examples 1 to 4 were subjected to a plastic sucking process to prepare a refrigerator liner member.
The high-density polypropylene plastic sheet was subjected to a plastic suction process to prepare a refrigerator liner member, giving comparative example 1.
The antibacterial performance of the refrigerator liner part is detected according to GB/T31402-2015, and the antibacterial performance is shown in the following table 1:
TABLE 1
Through tests, the antibacterial performance of the bactericidal film-coated plastic plates of examples 1-4 is good, the antibacterial rate is more than 99%, and the plastic plates are detected by an authority mechanism and placed for 2 after inoculationThe viable count obtained in 4 hours is less than 1cfu/cm 2 The bacterial residue number on the surface is almost 0, and the sterilization rate is close to 100%.
In summary, the sterilization film of the sterilization film plastic plate is covered on the surface of the plate, so that the sterilization film plastic plate has strong sterilization capability, bacteria can not survive all the time and are unlikely to penetrate, and the viable count obtained by the sterilization film plastic plate after being detected and inoculated by an authoritative mechanism and placed for 24 hours is less than 1cfu/cm 2 The bacterial residue number on the surface is almost 0, the sterilization rate is close to 100%, and the method can be applied to liner plates of refrigerators. The preparation method of the sterilization coated plastic plate adopts an extrusion coating machine, and the sterilization film in a hot melting state is attached to the bottom plate while the bottom plate is extruded and molded, and is integrated after cooling, so that the integrated sterilization coated plastic plate is formed, and the film and the plate are synchronously stretched and expanded in the process of processing the plate into a plastic product, so that the surface of the plastic product is covered, the plastic product is molded once, the film and the plate are integrated and cannot be peeled, and the cost of sterilization materials is saved. According to the preparation method of the sterilization coated plastic plate, in the process of machining the plate by using machine equipment, the water in the emulsion in the formula is evaporated through modification heating treatment of the film forming part, so that an ultrathin film which is not easy to achieve by other conventional methods is formed, and meanwhile, a large number of tiny holes are formed on the surface of the film, so that the contact area with bacteria is increased.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. The sterilization film-coated plastic plate is characterized by comprising a bottom plate and a sterilization film, wherein at least one surface of the bottom plate is coated with the sterilization film, the sterilization film comprises a sterilization nanocomposite, and the sterilization nanocomposite is composed of fine particles with the particle size of 30-50 nm, and the sterilization nanocomposite comprises, by weight, 20-80% of silver, 10-50% of copper oxide and 10-50% of zinc oxide;
the sterilizing film comprises the following components in percentage by weight:
50-80% of sterilizing plastic master batch,
15-49% of common plastic particles,
1 to 5 percent of additive,
the sterilization plastic master batch consists of 95-99% of plastic powder and 1-5% of sterilization nanocomposite;
the additive is methyl silicone oil;
the thickness of the sterilization film coated on the surface of the sterilization film plastic plate is 5-100 mu m; the integral thickness of the sterilization film-coated plastic plate is 1-20 mm;
the sterilization film plastic plate adopts an extrusion film coating machine, and when the bottom plate is extruded and molded, a sterilization film in a hot melting state is attached to the bottom plate, and is cooled and integrated into a whole to form an integrated sterilization film plastic plate, and the sterilization film plastic plate is prepared by the following steps:
s01, smashing the sterilized plastic master batch into powder;
s02, crushing common plastic particles into powder;
s03, preparing adhesive emulsion by using an additive and water;
s04, stirring and mixing the crushed sterilization plastic master batch powder, the common plastic powder and the adhesive emulsion at a high speed to obtain a mixture;
s05, adding the mixture obtained in the step S04 into an extrusion laminating machine, extruding and forming a base plate, adhering a sterilizing film in a hot melting state on the base plate, and cooling and integrating to form an integrated sterilizing laminated plastic plate; the sterilizing film in a hot-melt state is attached to a base plate and the film is heat-treated.
2. The plastic sheet material of claim 1, wherein the bottom plate of the plastic sheet material is coated with a sterilizing film on both sides.
3. The sterilization coated plastic sheet material according to claim 1, wherein the plastic powder of the sterilization plastic master batch is one or more of polyethylene, polypropylene, polystyrene, polyvinyl chloride and ABS plastic.
4. A plastic sheet according to claim 3, wherein the material of the base plate of the plastic sheet is the same plastic as the plastic powder of the plastic master batch.
5. The sterilization coated plastic sheet according to claim 1, wherein the sterilization plastic master batch in the step S01 is crushed to 100-200 meshes.
6. The sterilization coated plastic sheet according to claim 1, wherein in the step S02, the common plastic particles are crushed to 100-200 mesh.
7. Use of the sterilized coated plastic sheet of claim 1 in plastic products.
8. The use of a plastic sheet with a sterilization film according to claim 7 in plastic products, wherein the plastic sheet with a sterilization film is used as a plastic liner of a refrigerator.
9. The use of the sterilization coated plastic sheet material according to claim 7 in plastic products, wherein the sterilization coated plastic sheet material is used as an interior decoration sheet material in clean spaces of medical operating rooms and ward rooms, food and drug production plants and high-tech electronic product production plants.
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| JPH10194324A (en) * | 1996-12-27 | 1998-07-28 | Sumiron:Kk | Antibacterial wrapping film |
| JPH11100941A (en) * | 1997-09-26 | 1999-04-13 | Idemitsu Petrochem Co Ltd | Antimicrobial multilayer resin furniture or building material |
| US20090017086A1 (en) * | 2006-03-17 | 2009-01-15 | Marc Racquet | Anti microbial sheet products and preparation process |
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