CN111454584A - Non-toxic environment-friendly degradable packaging material and preparation method thereof - Google Patents
Non-toxic environment-friendly degradable packaging material and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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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
- B65D65/40—Applications of laminates for particular packaging purposes
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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
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/716—Degradable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7244—Oxygen barrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7246—Water vapor barrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention discloses a non-toxic environment-friendly degradable packaging material which comprises an outer layer and an inner layer, wherein the outer layer comprises the following components in parts by weight: 20-60 parts of plant wood pulp, 5-20 parts of starch, 2-15 parts of a toughening agent, 0.5-10 parts of a nano liposome, 0.5-10 parts of fumed silica and 0.5-10 parts of an antioxidant, wherein the inner layer comprises the following components in parts by weight: 20-50 parts of degradable polymer, 1-15 parts of film-forming additive, 1-10 parts of toughening agent, 0.5-10 parts of nano liposome, 0.5-10 parts of fumed silica and 0.5-10 parts of antioxidant. The packaging material disclosed by the invention is non-toxic and environment-friendly, can be rapidly degraded, avoids the pollution of the traditional packaging material to the environment, and has the characteristics of good mechanical strength, barrier property and the like.
Description
Technical Field
The invention relates to the technical field of food packaging, in particular to a non-toxic environment-friendly degradable packaging material and a preparation method thereof.
Background
The packaging plastics commonly used at present mainly comprise polyethylene, polypropylene, polystyrene and the like. After being discarded, the plastic can exist in the natural environment for a long time due to strong stability, and causes serious damage to the human living environment and the natural landscape. These wastes are usually disposed of in landfills or incinerated. A large amount of toxic gas is generated by burning to cause secondary pollution. The landfill occupies a large space, and the natural degradation of the white garbage or the plastic garbage requires more than one hundred years, and additives can be separated out to pollute soil, underground water and the like. Therefore, the development trend of the white waste or plastic waste treatment technology is recycling, but the recycling and recycling rate of the white waste or plastic waste is low. The reason is that the problems in the aspects of living habits, management and recovery links exist, but more importantly, the recovery and utilization technology is not perfect. This requires plastic manufacturers to develop more environmentally friendly process flows, consumers have higher environmental awareness and requirements, and retailers are actively responding to consumers, and continually propose innovative methods to save carbon, avoid waste incineration and landfill through supply chain optimization. The main sources of white pollution are food packaging, foam plastic filling packaging, snack boxes, agricultural mulching films and the like. Therefore, in the face of the increasingly severe environmental pollution problem, a feasible solution for eliminating the white pollution must be sought.
Polylactic acid (P L A) is a novel biodegradable material, is prepared by using renewable plant resource raw materials, has good biodegradability, can be completely degraded by microorganisms in the nature after being used, finally generates carbon dioxide and water, does not pollute the environment, is very favorable for protecting the environment, and is a well-known environment-friendly material.
Some degradable packaging materials are already available on the market, but the degradable packaging materials can only meet a small part of requirements of real practical application in the aspects of mechanical strength, barrier property, degradation rate and the like, and can not meet the requirements of comprehensive and all-aspect performances.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a non-toxic environment-friendly degradable packaging material.
The invention also aims to provide a preparation method of the nontoxic environment-friendly degradable packaging material.
The invention also aims to provide the application of the non-toxic environment-friendly degradable packaging material.
The invention adopts the following technical scheme:
in various embodiments, a non-toxic, environmentally friendly and degradable packaging material comprises an outer layer and an inner layer, wherein the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
as an alternative embodiment, the non-toxic environment-friendly degradable packaging material comprises an outer layer and an inner layer, wherein the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
furthermore, the quantitative amount of the outer layer can be selected from 85-120 g/m2E.g. 85, 90, 95, 100, 105, 110, 115, 120g/m2。
Optionally, the thickness of the outer layer is 40 to 80 μm, for example 40 μm, 50 μm, 60 μm, 70 μm or 80 μm.
Furthermore, the inner layer can be selected from 30-80 g/m in fixed quantity2E.g. 30, 35, 40, 45, 50, 55, 60, 65, 70, 75 or 80g/m2。
Optionally, the inner layer has a thickness of 5 to 40 μm, such as 5 μm, 10 μm, 20 μm, 30 μm or 40 μm.
Further, the plant wood pulp accounts for 20-60 parts, such as 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, or 60 parts.
Specifically, the plant wood pulp is eucalyptus wood pulp.
Further, the starch is 5-20 parts, such as 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 parts.
Specifically, the starch comprises at least one of wheat starch, corn starch, yam starch, potato starch, cassava starch, purple sweet potato starch, water chestnut starch, kudzu root starch, lotus root starch, mung bean starch and water chestnut starch.
Further, the toughening agent in the outer layer accounts for 2-15 parts, such as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15 parts.
Further, the toughening agent in the inner layer accounts for 1-10 parts, such as 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 parts.
Specifically, the toughening agent (e.g., the toughening agent in the outer layer, or the toughening agent in the inner layer) includes at least one of xylan, glucose, fructose, sucrose.
Further, the nanoliposome in the outer layer accounts for 0.5-10 parts, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 parts.
Further, the nanoliposome in the inner layer accounts for 0.5-10 parts, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 parts.
Specifically, the particle size of the nanoliposome (e.g., nanoliposome in the outer layer, or nanoliposome in the inner layer) is 1nm to 500nm, such as 1nm to 10nm, 10nm to 50nm, 50nm to 100nm, 100nm to 150nm, 150nm to 200nm, 200nm to 250nm, 250nm to 300nm, 300nm to 350nm, 350nm to 400nm, 400nm to 450nm, 450nm to 500 nm.
Further, the fumed silica in the outer layer accounts for 0.5-10 parts, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 parts.
Further, the fumed silica in the inner layer accounts for 0.5-10 parts, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 parts.
Specifically, the particle size of the fumed silica (e.g., fumed silica in the outer layer or fumed silica in the inner layer) is 1nm to 100nm, such as 1nm to 10nm, 10nm to 20nm, 20nm to 30nm, 30nm to 40nm, 40nm to 50nm, 50nm to 60nm, 60nm to 70nm, 70nm to 80nm, 80nm to 90nm, 90nm to 100 nm.
Further, the antioxidant in the outer layer accounts for 0.5-10 parts, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 parts.
Further, the antioxidant in the inner layer accounts for 0.5-10 parts, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 parts.
Specifically, the antioxidant (e.g., the antioxidant in the outer layer, or the antioxidant in the inner layer) includes at least one of tea polyphenol, vitamin E, vitamin C, sodium citrate.
The same components in the outer and inner layers are considered to be the same herein, unless explicitly stated.
Further, the degradable polymer accounts for 20-50 parts, such as 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 or 50 parts.
Specifically, the degradable polymer comprises at least one of polylactic acid, polycaprolactone, polyvinyl alcohol, poly (ethyl propyl ester), polylactide, poly (hydroxybutyrate-valerate) copolymer, polyglycolic acid, polyhydroxybutyrate, polyhydroxyvalerate, polyvinyl acetate, polybutylene succinate and p-dioxanone polymer.
Further, the coalescent comprises 1 to 15 parts, for example 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 parts.
Specifically, the film forming auxiliary agent comprises at least one of pectin, gelatin, locust bean gum, xanthan gum, arabic gum, guar gum, carrageenan, curdlan, seaweed gum, gellan gum, tragacanth gum, tara gum, tamarind gum, fenugreek gum, carob bean gum, carrageenan sodium, methyl cellulose and hydroxypropyl methyl cellulose.
In various embodiments, the method for preparing the non-toxic environment-friendly degradable packaging material comprises the following steps:
(1) preparing an outer layer:
a. adding plant wood pulp and starch into appropriate amount of water (such as plant wood pulp and starch at a weight ratio of 1: 0.5-3), heating at 40-60 deg.C (such as 40 deg.C, 41 deg.C, 42 deg.C, 43 deg.C, 44 deg.C, 45 deg.C, 46 deg.C, 47 deg.C, 48 deg.C, 49 deg.C, 50 deg.C, 51 deg.C, 52 deg.C, 53 deg.C, 54 deg.C, 55 deg.C, 56 deg.C, 57 deg.C, 58 deg.C, 59 deg.C or 60 deg.C), and;
b. uniformly stirring the toughening agent in the outer layer component and fumed silica (preferably, simultaneously performing ultrasonic treatment with the ultrasonic power of 500-1000W (such as 500W, 600W, 700W, 800W, 900W or 1000W)) to obtain a mixture B;
c. uniformly stirring the nanoliposome in the outer layer component and an antioxidant (preferably, simultaneously carrying out ultrasonic treatment with the ultrasonic power of 500-1000W (such as 500W, 600W, 700W, 800W, 900W or 1000W)) to obtain a mixture C;
d. uniformly stirring the mixed solution A, the mixture B and the mixture C, then placing the mixture in a mold, and drying the mixture at 50-70 ℃ (for example, 50 ℃, 51 ℃, 52 ℃, 53 ℃, 54 ℃, 55 ℃, 56 ℃, 57 ℃, 58 ℃, 59 ℃, 60 ℃, 61 ℃, 62 ℃, 63 ℃, 64 ℃, 65 ℃, 66 ℃, 67 ℃, 68 ℃, 69 ℃ or 70 ℃) to obtain an outer layer;
(2) preparing an inner layer:
e. uniformly stirring the toughening agent in the inner layer component and fumed silica (preferably, simultaneously performing ultrasonic treatment with the ultrasonic power of 500-1000W (such as 500W, 600W, 700W, 800W, 900W or 1000W)) to obtain a mixture E;
f. uniformly stirring the nanoliposome in the inner layer component with a film-forming aid and an antioxidant (preferably, simultaneously performing ultrasonic treatment with the ultrasonic power of 500-1000W (such as 500W, 600W, 700W, 800W, 900W or 1000W)) to obtain a mixture F;
g. melt-blending the degradable polymer, the mixture E and the mixture F at 150 to 190 ℃ (e.g., 150 ℃, 151 ℃, 152 ℃, 153 ℃, 154 ℃, 155 ℃, 156 ℃, 157 ℃, 158 ℃, 159 ℃, 160 ℃, 161 ℃, 162 ℃, 163 ℃, 164 ℃, 165 ℃, 166 ℃, 167 ℃, 168 ℃, 169 ℃, 170 ℃, 175 ℃, 180 ℃, 185 ℃ or 190 ℃) (e.g., a twin-screw extruder can be used) to obtain an inner layer;
(3) the inner layer is adhered to the outer layer by an adhesive resin, or the inner layer is hot-melted (hot-melt temperature may be 150 ℃ to 250 ℃, for example 150 ℃ to 200 ℃, or 200 ℃ to 250 ℃) on the outer layer.
By way of example, the packaging material is used for packaging in direct contact with biscuits, potato chips, oatmeal, instant pasta cakes, instant pasta seasonings, tea, laver, mustard, peanuts, melon seeds, peas, gluten, oil, ham, fish, pork, beef, mutton or chicken.
Preferably, the packaging material of the present invention does not contain or does not contain added components such as benzoic acid and salts thereof, e.g., sodium benzoate, sorbic acid and salts thereof, e.g., potassium sorbate, propyl paraben, sodium dehydroacetate, calcium propionate, sodium diacetate, and the like, parabens, and the like, specifically, e.g., methyl paraben, propyl paraben, phenoxyethanol, benzyl alcohol, phenethyl alcohol, bis (hydroxymethyl) imidazolidinyl urea, chlorphenesin, and the like.
Preferably, the packaging material of the present invention is free of polyethylene, polypropylene, high density polyethylene, low density polyethylene, polyvinyl chloride, polystyrene, styrene-acrylonitrile copolymer, acrylonitrile-butadiene-styrene copolymer, polymethacrylate, ethylene-vinyl acetate copolymer, polyethylene terephthalate, polybutylene terephthalate, polyurethane, polyamide, polycarbonate, polyoxymethylene resin, polyphenylene ether, polyphenylene sulfide, polyurethane, thermoplastic polyester, ultra-high molecular weight polyethylene, methylpentene polymer, vinyl alcohol copolymer, polysulfone, polyethersulfone, polyimide, polyetheretherketone, polytetrafluoroethylene, polyvinylidene chloride, polyacrylonitrile, and mixtures thereof.
The raw materials used in the present invention are generally commercially available unless otherwise specified.
As used herein, "and/or" includes any and all combinations of one or more of the associated listed items. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The exemplary invention described herein may suitably lack any one or more of the element limitations, which are not specifically disclosed herein. Thus, the terms "comprising," "including," "containing," and the like are to be construed broadly and in a non-limiting sense. Furthermore, the terms used herein are used as terms of description and not of limitation, and there is no intention in the use of such terms to describe only some of their characteristics but, in the light of the claims, various modifications are possible within the scope of the invention. Thus, while the present invention has been particularly disclosed in terms of preferred embodiments and optional features, modification of the invention herein disclosed to embody it may be noted by those skilled in the art, and such modifications and variations are considered to be within the scope of the invention.
Compared with the prior art, the invention has the beneficial effects that:
(1) the packaging material is non-toxic and environment-friendly, can be rapidly degraded, and avoids the pollution to the environment caused by burning and burying the traditional packaging material;
(2) the packaging material has the characteristics of good mechanical strength, barrier property and the like, provides a barrier for moisture and oxygen for food, prolongs the shelf life, and can help retailers and consumers to reduce food waste to the minimum;
(3) the preparation method of the packaging material is simple, the raw materials are easy to obtain, the cost is low, and the packaging material is suitable for industrial mass production.
Detailed Description
For better explanation of the present invention, the following specific examples are further illustrated, but the present invention is not limited to the specific examples.
Example 1
A nontoxic environment-friendly degradable packaging material, which comprises an outer layer and an inner layer,
the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
the starch is yam starch; the toughening agents in the outer layer and the inner layer are xylan; the degradable polymer is 30 parts of polylactic acid and 10 parts of polycaprolactone; the film-forming auxiliary agent is seaweed glue; the particle size of the nano liposome in the outer layer and the inner layer is 100 nm-500 nm; the particle size of the fumed silica in the outer layer and the inner layer is 10 nm-100 nm; the antioxidant in the outer layer and the inner layer is tea polyphenol.
The preparation method of the nontoxic environment-friendly degradable packaging material comprises the following steps:
(1) preparing an outer layer:
a. adding plant wood pulp and starch into a proper amount of water (the weight ratio of the plant wood pulp to the starch to the water is 1: 0.5), heating (at 40 ℃) and uniformly stirring to obtain a mixed solution A;
b. uniformly stirring the toughening agent in the outer layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 500W to obtain a mixture B;
c. uniformly stirring the nano liposome in the outer layer component and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 800W to obtain a mixture C;
d. uniformly stirring the mixed solution A, the mixture B and the mixture C, then placing the mixture in a mould, and drying the mixture at 50 ℃ to obtain an outer layer;
(2) preparing an inner layer:
e. uniformly stirring the toughening agent in the inner layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture E;
f. uniformly stirring the nanoliposome in the inner layer component with a film forming aid and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture F;
g. melting and blending the degradable polymer, the mixture E and the mixture F at 180 ℃ to obtain an inner layer;
(3) the inner layer is adhered to the outer layer by an adhesive resin.
Example 2
A nontoxic environment-friendly degradable packaging material, which comprises an outer layer and an inner layer,
the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
the starch is corn starch; the toughening agents in the outer layer and the inner layer are glucose; the degradable polymer is 10 parts of polylactic acid, 30 parts of polycaprolactone and 10 parts of polypropylene glycol; the film-forming auxiliary agent is carrageenan; the particle size of the nano liposome in the outer layer and the inner layer is 100 nm-300 nm; the particle size of the fumed silica in the outer layer and the inner layer is 10 nm-50 nm; the antioxidant in the outer layer and the inner layer is vitamin C.
The preparation method of the nontoxic environment-friendly degradable packaging material comprises the following steps:
(1) preparing an outer layer:
a. adding plant wood pulp and starch into a proper amount of water (the weight ratio of the plant wood pulp to the starch to the water is 1: 1), heating (the heating temperature is 60 ℃) and uniformly stirring to obtain a mixed solution A;
b. uniformly stirring the toughening agent in the outer layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture B;
c. uniformly stirring the nano liposome in the outer layer component and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture C;
d. uniformly stirring the mixed solution A, the mixture B and the mixture C, then placing the mixture in a mould, and drying the mixture at 70 ℃ to obtain an outer layer;
(2) preparing an inner layer:
e. uniformly stirring the toughening agent in the inner layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 800W to obtain a mixture E;
f. uniformly stirring the nanoliposome in the inner layer component with a film forming aid and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 5800W to obtain a mixture F;
g. melting and blending the degradable polymer, the mixture E and the mixture F at 190 ℃ to obtain an inner layer;
(3) the inner layer is heat fused to the outer layer.
Example 3
A nontoxic environment-friendly degradable packaging material, which comprises an outer layer and an inner layer,
the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
the starch is 8 parts of wheat starch and 2 parts of potato starch; the toughening agent in the outer layer is 3 parts of fructose and 3 parts of sucrose; the toughening agent in the inner layer is 1 part of glucose and 3 parts of sucrose; the degradable polymer is 30 parts of polylactic acid and 10 parts of polylactide; the film-forming auxiliary agent is 1 part of seaweed glue and 5 parts of methyl cellulose; the particle size of the nano liposome in the outer layer is 100 nm-200 nm; the particle size of the nano liposome in the inner layer is 200 nm-500 nm; the particle size of the fumed silica in the outer layer is 10 nm-30 nm; the granularity of the fumed silica in the inner layer is 20 nm-50 nm; the antioxidant in the outer layer is sodium citrate; the antioxidant in the inner layer is tea polyphenol.
The preparation method of the nontoxic environment-friendly degradable packaging material comprises the following steps:
(1) preparing an outer layer:
a. adding plant wood pulp and starch into a proper amount of water (the weight ratio of the plant wood pulp to the starch to the water is 1: 2), heating (the heating temperature is 60 ℃) and uniformly stirring to obtain a mixed solution A;
b. uniformly stirring the toughening agent in the outer layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture B;
c. uniformly stirring the nano liposome in the outer layer component and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture C;
d. uniformly stirring the mixed solution A, the mixture B and the mixture C, then placing the mixture in a mould, and drying the mixture at 60 ℃ to obtain an outer layer;
(2) preparing an inner layer:
e. uniformly stirring the toughening agent in the inner layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 800W to obtain a mixture E;
f. uniformly stirring the nanoliposome in the inner layer component with a film forming aid and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 800W to obtain a mixture F;
g. melting and blending the degradable polymer, the mixture E and the mixture F at 190 ℃ to obtain an inner layer;
(3) the inner layer is adhered to the outer layer by an adhesive resin.
Example 4
A nontoxic environment-friendly degradable packaging material, which comprises an outer layer and an inner layer,
the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
the starch is 2 parts of cassava starch and 6 parts of kudzu root starch; the toughening agent in the outer layer is 2 parts of glucose and 2 parts of sucrose; the toughening agent in the inner layer is 2 parts of glucose, 1 part of fructose and 2 parts of sucrose; the degradable polymer is 25 parts of polylactic acid and 20 parts of polybutylene succinate; the film-forming auxiliary agent is 2 parts of astragalus membranaceus gum and 4 parts of hydroxypropyl methyl cellulose; the particle size of the nano liposome in the outer layer and the inner layer is 200 nm-400 nm; the particle size of the fumed silica in the outer layer is 20 nm-50 nm; the granularity of the fumed silica in the inner layer is 50 nm-100 nm; the antioxidant in the outer layer and the inner layer is vitamin C.
The preparation method of the nontoxic environment-friendly degradable packaging material comprises the following steps:
(1) preparing an outer layer:
a. adding plant wood pulp and starch into a proper amount of water (the weight ratio of the plant wood pulp to the starch to the water is 1: 3), heating (the heating temperature is 60 ℃) and uniformly stirring to obtain a mixed solution A;
b. uniformly stirring the toughening agent in the outer layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture B;
c. uniformly stirring the nano liposome in the outer layer component and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 800W to obtain a mixture C;
d. uniformly stirring the mixed solution A, the mixture B and the mixture C, then placing the mixture in a mould, and drying the mixture at 70 ℃ to obtain an outer layer;
(2) preparing an inner layer:
e. uniformly stirring the toughening agent in the inner layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 800W to obtain a mixture E;
f. uniformly stirring the nanoliposome in the inner layer component with a film forming aid and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture F;
g. melting and blending the degradable polymer, the mixture E and the mixture F at 185 ℃ to obtain an inner layer;
(3) the inner layer is heat fused to the outer layer.
Example 5
A nontoxic environment-friendly degradable packaging material, which comprises an outer layer and an inner layer,
the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
the starch is 2 parts of wheat starch, 2 parts of Chinese yam starch and 2 parts of potato starch; the toughening agent in the outer layer is 2 parts of glucose and 2 parts of fructose; the toughening agent in the inner layer is 5 parts of cane sugar; the degradable polymer is 20 parts of polylactide and 15 parts of polycaprolactone; the film-forming auxiliary agent comprises 2 parts of locust bean gum, 2 parts of methyl cellulose and 2 parts of hydroxypropyl methyl cellulose; the particle size of the nano liposome in the outer layer and the inner layer is 100 nm-300 nm; the particle size of the fumed silica in the outer layer and the inner layer is 30 nm-80 nm; the antioxidant in the outer layer is 3 parts of sodium citrate; the antioxidant in the inner layer is 1 part of tea polyphenol and 1 part of sodium citrate.
The preparation method of the nontoxic environment-friendly degradable packaging material comprises the following steps:
(1) preparing an outer layer:
a. adding plant wood pulp and starch into a proper amount of water (the weight ratio of the plant wood pulp to the starch to the water is 1: 1.5), heating (the heating temperature is 55 ℃) and uniformly stirring to obtain a mixed solution A;
b. uniformly stirring the toughening agent in the outer layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture B;
c. uniformly stirring the nano liposome in the outer layer component and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 500W to obtain a mixture C;
d. uniformly stirring the mixed solution A, the mixture B and the mixture C, then placing the mixture in a mould, and drying the mixture at 65 ℃ to obtain an outer layer;
(2) preparing an inner layer:
e. uniformly stirring the toughening agent in the inner layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 8000W to obtain a mixture E;
f. uniformly stirring the nanoliposome in the inner layer component with a film forming aid and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 800W to obtain a mixture F;
g. melting and blending the degradable polymer, the mixture E and the mixture F at 190 ℃ to obtain an inner layer;
(3) the inner layer is adhered to the outer layer by an adhesive resin.
Example 6
A nontoxic environment-friendly degradable packaging material, which comprises an outer layer and an inner layer,
the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
the starch is wheat starch; the toughening agent is sucrose; the degradable polymer is 10 parts of poly (ethyl propyl) ester, 20 parts of polylactide and 20 parts of polyglycolic acid; the film-forming auxiliary agent comprises 1 part of seaweed gel, 1 part of carob bean gum, 3 parts of methyl cellulose and 3 parts of hydroxypropyl methyl cellulose; the particle size of the nano liposome in the outer layer and the inner layer is 100 nm-200 nm; the particle size of the fumed silica in the outer layer and the inner layer is 10 nm-30 nm; the antioxidant in the outer layer and the inner layer is sodium citrate.
The preparation method of the nontoxic environment-friendly degradable packaging material comprises the following steps:
(1) preparing an outer layer:
a. adding plant wood pulp and starch into a proper amount of water (the weight ratio of the plant wood pulp to the starch to the water is 1: 0.5-3), heating (the heating temperature is 55 ℃) and uniformly stirring to obtain a mixed solution A;
b. uniformly stirring the toughening agent in the outer layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture B;
c. uniformly stirring the nano liposome in the outer layer component and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture C;
d. uniformly stirring the mixed solution A, the mixture B and the mixture C, then placing the mixture in a mould, and drying the mixture at 70 ℃ to obtain an outer layer;
(2) preparing an inner layer:
e. uniformly stirring the toughening agent in the inner layer component and fumed silica, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture E;
f. uniformly stirring the nanoliposome in the inner layer component with a film forming aid and an antioxidant, and simultaneously carrying out ultrasonic treatment with the ultrasonic power of 1000W to obtain a mixture F;
g. melting and blending the degradable polymer, the mixture E and the mixture F at 190 ℃ to obtain an inner layer;
(3) the inner layer is heat fused to the outer layer.
Comparative example 1
The components of comparative example 1 were the same as in example 2, except that all the components of comparative example 1 were directly mixed to homogeneity and then melt blended to make a single layer packaging material.
Comparative example 2
The composition of the outer layer of comparative example 2 did not contain nanoliposomes and fumed silica, and was otherwise identical to example 2.
Comparative example 3
Comparative example 3 the composition of the inner layer did not contain nanoliposomes and fumed silica, and was otherwise identical to example 2.
Examples 1 to 6 and comparative examples 2 to 3 were formed into films, the outer layer having a thickness of 60 μm, the inner layer having a thickness of 20 μm, and comparative example 1 having a thickness of 80 μm, and the tensile strength, moisture permeability, oxygen permeability, degradation rate, and the like of the examples and comparative examples were tested.
Table 1: the results of the performance tests of examples and comparative examples.
The results show that the packaging materials of examples 2-5 have very good barrier properties, mechanical strength and degradation rate, and are significantly superior to the packaging materials of comparative examples 1-3. It can be seen that nanoliposomes and fumed silicas, as well as specific methods of preparation, have unexpected effects in altering the properties of the packaging materials of the present invention.
The above description is only exemplary of the present invention and is not intended to limit the scope of the present invention, which is defined by the claims appended hereto, as well as the appended claims.
Claims (10)
1. The nontoxic, environment-friendly and degradable packaging material is characterized by comprising an outer layer and an inner layer,
the outer layer comprises the following components in parts by weight:
the inner layer comprises the following components in parts by weight:
2. the non-toxic, environmentally friendly and degradable packaging material according to claim 1, wherein the plant wood pulp is eucalyptus wood pulp.
3. The non-toxic, environment-friendly and degradable packaging material according to claim 1, wherein the starch comprises at least one of wheat starch, corn starch, yam starch, potato starch, tapioca starch, purple potato starch, sweet potato starch, water chestnut starch, kudzu root starch, lotus root starch, mung bean starch and water chestnut starch.
4. The nontoxic, environment-friendly and degradable packaging material according to claim 1, wherein the particle size of the nanoliposome is 1nm to 500 nm; the particle size of the fumed silica is 1 nm-100 nm.
5. The non-toxic, environment-friendly and degradable packaging material according to claim 1, wherein the antioxidant comprises at least one of tea polyphenol, vitamin E, vitamin C and sodium citrate.
6. The non-toxic, environmentally friendly and degradable packaging material according to claim 1, wherein the degradable polymer comprises at least one of polylactic acid, polycaprolactone, polyvinyl alcohol, poly (ethylene glycol propyl ester), polylactide, poly (hydroxybutyrate-valerate) copolymer, polyglycolic acid, polyhydroxybutyrate, polyhydroxyvalerate, polyvinyl acetate, polybutylene succinate, and p-dioxanone polymer.
7. The nontoxic, environment friendly and degradable packaging material according to claim 1, wherein the film forming aid comprises at least one of pectin, gelatin, locust bean gum, xanthan gum, gum arabic, guar gum, carrageenan, curdlan, alginate gum, gellan gum, tragacanth gum, tara gum, tamarind gum, fenugreek gum, carob gum, sodium carrageenan, methyl cellulose, hydroxypropyl methyl cellulose.
8. The non-toxic, environment-friendly and degradable packaging material according to claim 1, wherein the toughening agent comprises at least one of xylan, glucose, fructose and sucrose.
9. The method for preparing a nontoxic, environment-friendly and degradable packaging material according to any one of claims 1 to 8, characterized by comprising the steps of:
(1) preparing an outer layer:
a. adding plant wood pulp and starch into a proper amount of water, heating and uniformly stirring to obtain a mixed solution A;
b. uniformly stirring the toughening agent in the outer layer component and fumed silica to obtain a mixture B;
c. uniformly stirring the nano liposome in the outer layer component and the antioxidant to obtain a mixture C;
d. uniformly stirring the mixed solution A, the mixture B and the mixture C, then placing the mixture in a mould, and drying the mixture at 50-70 ℃ to obtain an outer layer;
(2) preparing an inner layer:
e. uniformly stirring the toughening agent in the inner layer component and fumed silica to obtain a mixture E;
f. uniformly stirring the nano liposome in the inner layer component, a film-forming aid and an antioxidant to obtain a mixture F;
g. melting and blending the degradable polymer, the mixture E and the mixture F at the temperature of 150-190 ℃ to obtain an inner layer;
(3) the inner layer is adhered to the outer layer by an adhesive resin, or the inner layer is thermally fused to the outer layer.
10. Use of the non-toxic environmentally friendly degradable packaging material according to any one of claims 1 to 8 for packaging in direct contact with biscuits, potato chips, oatmeal, instant pasta cakes, instant noodle seasonings, tea, laver, mustard tuber, peanuts, melon seeds, peas, gluten, oil, ham, fish, pork, beef, mutton or chicken.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114196222A (en) * | 2022-01-07 | 2022-03-18 | 云南猫哆哩集团食品有限责任公司 | Biodegradable material prepared from tamarind fruit shell and fiber, and preparation and application thereof |
| CN114316488A (en) * | 2022-01-27 | 2022-04-12 | 安徽德琳环保发展（集团）有限公司 | Degradable food packaging material and preparation method thereof |
| CN116080235A (en) * | 2023-02-13 | 2023-05-09 | 仙桃康寿降解材料有限公司 | A kind of inner layer polylactic acid outer layer starch pulp foam biodegradable lunch box and preparation method thereof |
| CN117449118A (en) * | 2023-11-22 | 2024-01-26 | 潍坊海恩纸业有限公司 | Tear-resistant degradable plastic paper substitute and preparation method thereof |
| EP4375321A1 (en) * | 2022-11-24 | 2024-05-29 | B&T Entwicklungs- und Vermarktungsgesellschaft mbH | Water-soluble polymer composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101460302A (en) * | 2006-04-14 | 2009-06-17 | 生物技术天然包装两合公司 | Multilayered film and method for manufacturing same |
| CN110091564A (en) * | 2019-04-15 | 2019-08-06 | 青岛周氏塑料包装有限公司 | A kind of complete biological 100% degradable composite membrane and its processing technology and application |
| CN110791069A (en) * | 2019-11-08 | 2020-02-14 | 佰信(福建)新材料科技有限公司 | Full-degradable high-barrier composite material for flexible package and preparation method and application thereof |
-
2020
- 2020-04-26 CN CN202010336811.4A patent/CN111454584A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101460302A (en) * | 2006-04-14 | 2009-06-17 | 生物技术天然包装两合公司 | Multilayered film and method for manufacturing same |
| CN110091564A (en) * | 2019-04-15 | 2019-08-06 | 青岛周氏塑料包装有限公司 | A kind of complete biological 100% degradable composite membrane and its processing technology and application |
| CN110791069A (en) * | 2019-11-08 | 2020-02-14 | 佰信(福建)新材料科技有限公司 | Full-degradable high-barrier composite material for flexible package and preparation method and application thereof |
Non-Patent Citations (4)
| Title |
|---|
| 张倩等: "添加PBAT的PLA/PHB复合材料的性能研究", 《包装与食品机械》 * |
| 王国建: "《功能高分子材料（第2版）》", 30 June 2014, 同济大学出版社 * |
| 益小苏等: "《生物质树脂、纤维及生物复合材料》", 31 August 2017, 中国建材工业出版社 * |
| 酒巧娜等: "PBS对两种新型聚乳酸复合材料性能的影响", 《山东化工》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114196222A (en) * | 2022-01-07 | 2022-03-18 | 云南猫哆哩集团食品有限责任公司 | Biodegradable material prepared from tamarind fruit shell and fiber, and preparation and application thereof |
| CN114316488A (en) * | 2022-01-27 | 2022-04-12 | 安徽德琳环保发展（集团）有限公司 | Degradable food packaging material and preparation method thereof |
| EP4375321A1 (en) * | 2022-11-24 | 2024-05-29 | B&T Entwicklungs- und Vermarktungsgesellschaft mbH | Water-soluble polymer composition |
| CN116080235A (en) * | 2023-02-13 | 2023-05-09 | 仙桃康寿降解材料有限公司 | A kind of inner layer polylactic acid outer layer starch pulp foam biodegradable lunch box and preparation method thereof |
| CN117449118A (en) * | 2023-11-22 | 2024-01-26 | 潍坊海恩纸业有限公司 | Tear-resistant degradable plastic paper substitute and preparation method thereof |
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