CN113136071A - Environment-friendly degradable food-grade antibacterial plastic packaging film and preparation process thereof - Google Patents
Environment-friendly degradable food-grade antibacterial plastic packaging film and preparation process thereof Download PDFInfo
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
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- B65D65/466—Bio- or photodegradable packaging materials
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- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
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- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K2003/265—Calcium, strontium or barium carbonate
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Abstract
The invention discloses an environment-friendly degradable food-grade antibacterial plastic packaging film, which comprises the following components in parts by weight: 300 parts of polypropylene 200-one materials, 50-120 parts of plant starch, 30-80 parts of sarcandra glabra fiber, 3-8 parts of silicone oil, 3-6 parts of heavy calcium carbonate, 3-7 parts of glycerol, 2-5 parts of hydroxypropyl methyl cellulose, 1-3 parts of graphene, 5-12 parts of bamboo powder, 10-15 parts of antibacterial powder, 8-18 parts of photosensitizer, 1-7 parts of neopentyl polyol polyester, 3-8 parts of flexibilizer, 2-4 parts of food preservative, 1-6 parts of degradation promoter and 8-12 parts of vegetable oil. The environment-friendly degradable food-grade antibacterial plastic packaging film disclosed by the invention is degradable, and the bamboo powder, the antibacterial powder and the food preservative are added in the formula, so that the plastic packaging film has a certain antibacterial and antiseptic effect, and the phenomenon that food packaged by the plastic packaging film is easy to deteriorate due to the poor antibacterial effect of the plastic packaging film is avoided to a certain extent.
Description
Technical Field
The invention belongs to the technical field of packaging films, and particularly relates to an environment-friendly degradable food-grade antibacterial plastic packaging film; in particular to a preparation process of the environment-friendly degradable food-grade antibacterial plastic packaging film.
Background
Plastic packages and plastic package products have a growing share in the market, and particularly, composite plastic flexible packages are widely applied to the fields of food, medicine, chemical industry and the like, wherein the proportion of the plastic packages is the largest, such as beverage packages, quick-frozen food packages, steamed and cooked food packages, fast food packages and the like, and the products bring great convenience to the life of people, wherein the plastic package film is one of the most widely used materials in the plastic packages.
However, most of the existing plastic packaging films adopt polytetrafluoroethylene as a raw material and are difficult to degrade, and most of the existing plastic packaging films have poor antibacterial effect, so that food packaged by the plastic packaging films is easy to deteriorate, and therefore, an environment-friendly degradable food-grade antibacterial plastic packaging film and a preparation process thereof are provided.
Disclosure of Invention
The invention aims to provide an environment-friendly degradable food-grade antibacterial plastic packaging film, a preparation process thereof and a preparation process thereof, so as to solve the problem that foods packaged by the plastic packaging film are easy to deteriorate due to poor antibacterial effect in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 300 parts of polypropylene 200-one materials, 50-120 parts of plant starch, 30-80 parts of sarcandra glabra fiber, 3-8 parts of silicone oil, 3-6 parts of heavy calcium carbonate, 3-7 parts of glycerol, 2-5 parts of hydroxypropyl methyl cellulose, 1-3 parts of graphene, 5-12 parts of bamboo powder, 10-15 parts of antibacterial powder, 8-18 parts of photosensitizer, 1-7 parts of neopentyl polyol polyester, 3-8 parts of flexibilizer, 2-4 parts of food preservative, 1-6 parts of degradation promoter and 8-12 parts of vegetable oil.
Preferably, the photosensitizer comprises one or more of aromatic ketone, aromatic amine, transition metal carboxylate, transition metal inorganic complex, ferrocene derivative and metal dithioformate.
Preferably, the antibacterial powder comprises one or a mixture of garlic powder and pepper powder, and zinc is used as an active substance.
As a preferred scheme, the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 200 parts of polypropylene, 50 parts of plant starch, 30 parts of sarcandra glabra fiber, 3 parts of silicone oil, 3 parts of ground calcium carbonate, 3 parts of glycerol, 2 parts of hydroxypropyl methyl cellulose, 1 part of graphene, 5 parts of bamboo powder, 10 parts of antibacterial powder, 8 parts of photosensitizer, 1 part of neopentyl polyol polyester, 3 parts of flexibilizer, 2 parts of food preservative, 1 part of degradation accelerator and 8 parts of vegetable oil.
As a preferred scheme, the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 250 parts of polypropylene, 90 parts of plant starch, 60 parts of sarcandra glabra fiber, 6 parts of silicone oil, 5 parts of ground calcium carbonate, 5 parts of glycerol, 4 parts of hydroxypropyl methyl cellulose, 5 parts of graphene, 9 parts of bamboo powder, 13 parts of antibacterial powder, 13 parts of photosensitizer, 4 parts of neopentyl polyol polyester, 6 parts of flexibilizer, 5 parts of food preservative, 4 parts of degradation accelerator and 10 parts of vegetable oil.
As a preferred scheme, the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 300 parts of polypropylene, 120 parts of plant starch, 80 parts of sarcandra glabra fiber, 8 parts of silicone oil, 6 parts of ground calcium carbonate, 7 parts of glycerol, 5 parts of hydroxypropyl methyl cellulose, 3 parts of graphene, 12 parts of bamboo powder, 15 parts of antibacterial powder, 18 parts of photosensitizer, 7 parts of neopentyl polyol polyester, 8 parts of toughening agent, 4 parts of food preservative, 6 parts of degradation promoter and 12 parts of plant oil.
A preparation process of an environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following steps:
s1, preparing materials, namely weighing the materials for later use according to the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film and the preparation process thereof by taking the parts by mass as reference;
s2, stirring and mixing, namely adding polypropylene, plant starch, sarcandra glabra fiber, silicone oil, heavy calcium carbonate, glycerol, hydroxypropyl methyl cellulose, graphene, bamboo powder, antibacterial powder, a photosensitizer, neopentyl polyol polyester, a toughening agent, a food preservative, a degradation promoter and vegetable oil into a heating type stirring kettle in sequence for stirring and mixing, wherein the heating type stirring kettle is firstly stirred at a medium speed for 20-60 min and then is stirred at a low speed for 60-120 min, and the stirring temperature is 45-65 ℃;
s3, melting, namely melting, extruding and bracing the mixture by a single-screw extruder, and cooling;
s4, cutting into granules, cutting the cooled material into granules through a granulator, and screening the cut material;
and S5, preparing a film, namely pressing the screened particles into the film through a tablet press to complete the preparation.
Preferably, the medium-speed stirring speed of the heating type stirring tank is 100r/min, and the low-speed stirring speed of the heating type stirring tank is 40 r/min.
Preferably, the screening in step S4 is performed by using a rolling screen type screening machine, the working part of the rolling screen type screening machine is a cylindrical or conical screen cylinder, a rotating shaft is installed along the symmetry axis of the screen cylinder, and the whole screen rotates around the axis of the cylinder body.
The invention has the technical effects and advantages that: compared with the prior art, the environment-friendly degradable food-grade antibacterial plastic packaging film and the preparation process thereof provided by the invention have the following advantages:
the environment-friendly degradable food-grade antibacterial plastic packaging film disclosed by the invention is degradable by adopting polypropylene as a main material and using plant starch and sarcandra glabra fiber as fillers in a formula, and has a certain antibacterial and anticorrosive effect by adding bamboo powder, antibacterial powder and a food preservative in the formula, so that the phenomenon that foods packaged by the plastic packaging film are easy to deteriorate due to the poor antibacterial effect of the plastic packaging film is avoided to a certain extent.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components: 200 parts of polypropylene, 50 parts of plant starch, 30 parts of sarcandra glabra fiber, 3 parts of silicone oil, 3 parts of ground calcium carbonate, 3 parts of glycerol, 2 parts of hydroxypropyl methyl cellulose, 1 part of graphene, 5 parts of bamboo powder, 10 parts of antibacterial powder, 8 parts of photosensitizer, 1 part of neopentyl polyol polyester, 3 parts of flexibilizer, 2 parts of food preservative, 1 part of degradation accelerator and 8 parts of vegetable oil;
wherein the photosensitizer comprises one or more of aromatic ketone, aromatic amine, transition metal carboxylate, transition metal inorganic complex, ferrocene derivative and metal dithioformate.
Wherein the antibacterial powder comprises one or a mixture of garlic powder and Sichuanese pepper powder, and zinc is used as an active substance.
A preparation process of an environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following steps:
s1, preparing materials, namely weighing the materials for later use according to the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film and the preparation process thereof by taking the parts by mass as reference;
s2, stirring and mixing, namely adding polypropylene, plant starch, sarcandra glabra fiber, silicone oil, heavy calcium carbonate, glycerol, hydroxypropyl methyl cellulose, graphene, bamboo powder, antibacterial powder, a photosensitizer, neopentyl polyol polyester, a toughening agent, a food preservative, a degradation promoter and vegetable oil into a heating type stirring kettle in sequence for stirring and mixing, wherein the heating type stirring kettle is firstly stirred at a medium speed for 20-60 min and then stirred at a low speed for 60-120 min, and the stirring temperature is 45-65 ℃;
s3, melting, namely melting, extruding and bracing the mixture by a single-screw extruder, and cooling;
s4, cutting into granules, cutting the cooled material into granules through a granulator, and screening the cut material;
and S5, preparing a film, namely pressing the screened particles into the film through a tablet press to complete the preparation.
Wherein the medium-speed stirring speed of the heating type stirring kettle is 100r/min, and the low-speed stirring speed of the heating type stirring kettle is 40 r/min.
The screening in step S4 is performed by a rolling screen type screening machine, the working part of the rolling screen type screening machine is a cylindrical or conical screen cylinder, a rotating shaft is installed along the symmetry axis of the screen cylinder, and the whole screen rotates around the axis of the cylinder.
Example 2
Different from the embodiment 1, the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 250 parts of polypropylene, 90 parts of plant starch, 60 parts of sarcandra glabra fiber, 6 parts of silicone oil, 5 parts of ground calcium carbonate, 5 parts of glycerol, 4 parts of hydroxypropyl methyl cellulose, 5 parts of graphene, 9 parts of bamboo powder, 13 parts of antibacterial powder, 13 parts of photosensitizer, 4 parts of neopentyl polyol polyester, 6 parts of flexibilizer, 5 parts of food preservative, 4 parts of degradation accelerator and 10 parts of vegetable oil.
Example 3
Different from the embodiment 1, the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 300 parts of polypropylene, 120 parts of plant starch, 80 parts of sarcandra glabra fiber, 8 parts of silicone oil, 6 parts of ground calcium carbonate, 7 parts of glycerol, 5 parts of hydroxypropyl methyl cellulose, 3 parts of graphene, 12 parts of bamboo powder, 15 parts of antibacterial powder, 18 parts of photosensitizer, 7 parts of neopentyl polyol polyester, 8 parts of toughening agent, 4 parts of food preservative, 6 parts of degradation promoter and 12 parts of plant oil.
The specific formulation data for three sets of examples of the invention are given in the following table:
the environment-friendly degradable food-grade antibacterial plastic packaging film disclosed by the invention is degradable by adopting polypropylene as a main material and using plant starch and sarcandra glabra fiber as fillers in a formula, and has a certain antibacterial and anticorrosive effect by adding bamboo powder, antibacterial powder and a food preservative in the formula, so that the phenomenon that foods packaged by the plastic packaging film are easy to deteriorate due to the poor antibacterial effect of the plastic packaging film is avoided to a certain extent.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (9)
1. The utility model provides an antibiotic plastic packaging film of environmental protection degradable food level which characterized in that: the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 300 parts of polypropylene 200-one materials, 50-120 parts of plant starch, 30-80 parts of sarcandra glabra fiber, 3-8 parts of silicone oil, 3-6 parts of heavy calcium carbonate, 3-7 parts of glycerol, 2-5 parts of hydroxypropyl methyl cellulose, 1-3 parts of graphene, 5-12 parts of bamboo powder, 10-15 parts of antibacterial powder, 8-18 parts of photosensitizer, 1-7 parts of neopentyl polyol polyester, 3-8 parts of flexibilizer, 2-4 parts of food preservative, 1-6 parts of degradation promoter and 8-12 parts of vegetable oil.
2. The environment-friendly degradable food-grade antibacterial plastic packaging film according to claim 1, wherein: the photosensitizer comprises one or more of aromatic ketone, aromatic amine, transition metal carboxylate, transition metal inorganic complex, ferrocene derivative and metal dithioformate.
3. The environment-friendly degradable food-grade antibacterial plastic packaging film according to claim 1, wherein: the antibacterial powder comprises one or a mixture of garlic powder and Sichuanese pepper corn powder, and zinc is used as an active substance.
4. The environment-friendly degradable food-grade antibacterial plastic packaging film according to claim 1, wherein: the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 200 parts of polypropylene, 50 parts of plant starch, 30 parts of sarcandra glabra fiber, 3 parts of silicone oil, 3 parts of ground calcium carbonate, 3 parts of glycerol, 2 parts of hydroxypropyl methyl cellulose, 1 part of graphene, 5 parts of bamboo powder, 10 parts of antibacterial powder, 8 parts of photosensitizer, 1 part of neopentyl polyol polyester, 3 parts of flexibilizer, 2 parts of food preservative, 1 part of degradation accelerator and 8 parts of vegetable oil.
5. The environment-friendly degradable food-grade antibacterial plastic packaging film according to claim 1, wherein: the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 250 parts of polypropylene, 90 parts of plant starch, 60 parts of sarcandra glabra fiber, 6 parts of silicone oil, 5 parts of ground calcium carbonate, 5 parts of glycerol, 4 parts of hydroxypropyl methyl cellulose, 5 parts of graphene, 9 parts of bamboo powder, 13 parts of antibacterial powder, 13 parts of photosensitizer, 4 parts of neopentyl polyol polyester, 6 parts of flexibilizer, 5 parts of food preservative, 4 parts of degradation accelerator and 10 parts of vegetable oil.
6. The environment-friendly degradable food-grade antibacterial plastic packaging film according to claim 1, wherein: the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film comprises the following components in parts by weight: 300 parts of polypropylene, 120 parts of plant starch, 80 parts of sarcandra glabra fiber, 8 parts of silicone oil, 6 parts of ground calcium carbonate, 7 parts of glycerol, 5 parts of hydroxypropyl methyl cellulose, 3 parts of graphene, 12 parts of bamboo powder, 15 parts of antibacterial powder, 18 parts of photosensitizer, 7 parts of neopentyl polyol polyester, 8 parts of toughening agent, 4 parts of food preservative, 6 parts of degradation promoter and 12 parts of plant oil.
7. The preparation process of the environment-friendly degradable food-grade antibacterial plastic packaging film according to claim 1, characterized by comprising the following steps:
s1, preparing materials, namely weighing the materials for later use according to the formula of the environment-friendly degradable food-grade antibacterial plastic packaging film and the preparation process thereof by taking the parts by mass as reference;
s2, stirring and mixing, namely adding polypropylene, plant starch, sarcandra glabra fiber, silicone oil, heavy calcium carbonate, glycerol, hydroxypropyl methyl cellulose, graphene, bamboo powder, antibacterial powder, a photosensitizer, neopentyl polyol polyester, a toughening agent, a food preservative, a degradation promoter and vegetable oil into a heating type stirring kettle in sequence for stirring and mixing, wherein the heating type stirring kettle is firstly stirred at a medium speed for 20-60 min and then is stirred at a low speed for 60-120 min, and the stirring temperature is 45-65 ℃;
s3, melting, namely melting, extruding and bracing the mixture by a single-screw extruder, and cooling;
s4, cutting into granules, cutting the cooled material into granules through a granulator, and screening the cut material;
and S5, preparing a film, namely pressing the screened particles into the film through a tablet press to complete the preparation.
8. The environment-friendly degradable food-grade antibacterial plastic packaging film and the preparation process thereof according to claim 7, wherein the environment-friendly degradable food-grade antibacterial plastic packaging film is characterized in that: the medium-speed stirring speed of the heating type stirring kettle is 100r/min, and the low-speed stirring speed of the heating type stirring kettle is 40 r/min.
9. The environment-friendly degradable food-grade antibacterial plastic packaging film and the preparation process thereof according to claim 7, wherein the environment-friendly degradable food-grade antibacterial plastic packaging film is characterized in that: and S4, adopting a rolling screen type screening machine, wherein the working part of the rolling screen type screening machine is a cylindrical or conical screen cylinder, the rotating shaft is arranged along the symmetrical axis of the screen cylinder, and the whole screen rotates around the axis of the cylinder body.
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| CN114456420A (en) * | 2022-02-23 | 2022-05-10 | 北京工商大学 | Environment-friendly degradable food-grade antibacterial plastic packaging film and preparation method thereof |
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| CN109111637A (en) * | 2018-08-29 | 2019-01-01 | 桐城市强峰包装有限公司 | A kind of environment-friendly degradable food grade plastic packaging film |
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| CN114456420A (en) * | 2022-02-23 | 2022-05-10 | 北京工商大学 | Environment-friendly degradable food-grade antibacterial plastic packaging film and preparation method thereof |
| CN114456420B (en) * | 2022-02-23 | 2023-04-18 | 北京工商大学 | Environment-friendly degradable food-grade antibacterial plastic packaging film and preparation method thereof |
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