CN116409545A - Degradable preservative film for fruit and vegetable transportation and preparation method and application thereof - Google Patents
Degradable preservative film for fruit and vegetable transportation and preparation method and application thereof Download PDFInfo
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- CN116409545A CN116409545A CN202310383492.6A CN202310383492A CN116409545A CN 116409545 A CN116409545 A CN 116409545A CN 202310383492 A CN202310383492 A CN 202310383492A CN 116409545 A CN116409545 A CN 116409545A
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- preservative film
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- 239000003755 preservative agent Substances 0.000 title claims abstract description 48
- 230000002335 preservative effect Effects 0.000 title claims abstract description 48
- 235000012055 fruits and vegetables Nutrition 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000007731 hot pressing Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 14
- 108010010803 Gelatin Proteins 0.000 claims abstract description 10
- 238000000071 blow moulding Methods 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 229920000159 gelatin Polymers 0.000 claims abstract description 10
- 239000008273 gelatin Substances 0.000 claims abstract description 10
- 235000019322 gelatine Nutrition 0.000 claims abstract description 10
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 10
- 235000011187 glycerol Nutrition 0.000 claims abstract description 10
- 239000008187 granular material Substances 0.000 claims abstract description 10
- 229920001896 polybutyrate Polymers 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 9
- 229920001046 Nanocellulose Polymers 0.000 claims abstract description 7
- KPAMAAOTLJSEAR-UHFFFAOYSA-N [N].O=C=O Chemical compound [N].O=C=O KPAMAAOTLJSEAR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 22
- 235000013305 food Nutrition 0.000 description 8
- 235000013399 edible fruits Nutrition 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 244000144730 Amygdalus persica Species 0.000 description 1
- 206010016807 Fluid retention Diseases 0.000 description 1
- 240000009088 Fragaria x ananassa Species 0.000 description 1
- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009920 food preservation Methods 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000021012 strawberries Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- 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
-
- 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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
-
- 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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
-
- 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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
- B65D85/34—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
- Packages (AREA)
Abstract
The invention provides a preservative film suitable for fruit and vegetable transportation, which is of a degradable preservative film and is of a sandwich structure and comprises an inner film, a gas layer and an outer film. And mixing and granulating raw materials of PBAT, nano cellulose, gelatin and glycerin to obtain composite granules, and blow molding to obtain the inner layer film and the outer layer film. And (3) hot-pressing the inner film and the outer film, wherein carbon dioxide-nitrogen mixed gas is continuously blown between the two films in the hot-pressing process, and finally uniformly distributed air bags are formed, namely the air bag layers. The preservative film is a degradable preservative film, is environment-friendly, has good compression resistance and shock absorption functions in the use process, and ensures that fruits and vegetables are fresh and intact to the greatest extent in the transportation process.
Description
Technical Field
The invention relates to the field of preservative films, in particular to a degradable preservative film for fruit and vegetable transportation, and a preparation method and application thereof.
Background
The preservative film is a daily packaging product, and is widely used for occasions such as microwave oven food heating, refrigerator food preservation, fresh food and cooked food packaging and the like because of the increasing demands of people on food since the birth of the 20 th century. According to different materials, the preservative films are mainly of three types: polyethylene (PE), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC).
The preservative film has a plurality of advantages: (1) The transparency of the preservative film is helpful for understanding the condition of the food. (2) The air permeability and the sealing property of the preservative film prolong the preservation time of food. (3) The water retention of the preservative film can reduce the loss of moisture content and keep the freshness of food. And (4) the cost of the preservative film is lower.
Along with the rapid development of economy and the acceleration of life rhythm, the traditional preservative film can play a role of packaging, but the modern society puts higher demands on the function of the preservative film. In the prior report, a plurality of students have explored the method, and substances capable of absorbing or inhibiting various gases generated by fruits and vegetables are added in the preparation process of the preservative film to prevent ripening and aging; to prevent oxidation of food and microbial contamination, some antibacterial and antioxidant agents are also added to the film; with the enhancement of environmental awareness, degradable fruit and vegetable films and the like are researched. Most of the current researches are developed around chemical components of the preservative film, and the physical structure of the preservative film is less researched. Along with the improvement of logistics efficiency, the preservative film needs more functions as a packaging material, such as pressure resistance and shock resistance, so as to ensure that fruits and vegetables are intact in the transportation process. Therefore, the novel preservative film with comprehensive performance is significant.
Disclosure of Invention
In order to achieve the aim, the invention provides a degradable preservative film for fruit and vegetable transportation, which is of a sandwich structure and consists of an inner film 1, an outer film 2 and an air bag layer 3.
The second object of the present invention is to provide a preparation method of the preservative film, which comprises the following steps: and (3) mixing and granulating the PBAT, the nano-cellulose, the gelatin and the glycerol to obtain composite granules, and blow molding to obtain the inner layer film and the outer layer film. And (3) hot-pressing the inner film and the outer film, wherein carbon dioxide-nitrogen mixed gas is continuously blown between the two films in the hot-pressing process, and finally small air bags which are uniformly distributed are formed, namely the air bag layers.
Specifically, the preservative film comprises, by mass, 100-120 parts of PBAT, 80-100 parts of nanocellulose, 50 parts of gelatin and 20-30 parts of glycerol.
Specifically, the temperature of the mixed granulation is 130-150 ℃.
Specifically, the temperature of the blow molding is 130-140 ℃, and the hot pressing temperature of the inner film and the outer film is 130-140 ℃.
Specifically, the volume of the air bag is 0.2-0.4cm 3 。
Specifically, the thickness of the fresh-keeping film is 0.02-0.04mm, and the height of the air bag is 0.1-0.2 cm.
The invention also provides application of the preservative film prepared by the preparation method in the fruit and vegetable transportation process.
The invention has the beneficial effects that: the PBAT, the nanocellulose and the gelatin are all degradable raw materials, and the degradable preservative film prepared by using the raw materials has the advantage of environmental friendliness compared with the traditional preservative film produced by using petrochemical raw materials; preservative film sandwich structure, intermediate level are gasbag layer structure, in the use, and collision in the fruit vegetables transportation can effectively be protected to this structure, possess good fresh-keeping, shock attenuation effect.
Drawings
Fig. 1 is an electron microscope image of a preservative film material.
Fig. 2 is a cross-sectional view of the degradable preservative film. Wherein: 1. an inner layer film, 2, an outer layer film, 3 and an air bag layer.
Description of the embodiments
The invention is further illustrated by the following specific examples.
Examples
A degradable preservative film for fruit and vegetable transportation is of a sandwich structure and comprises an inner film 1, an outer film 2 and an air bag layer 3.
The preparation method of the preservative film comprises the following steps: and (3) mixing and granulating the PBAT, the nano-cellulose, the gelatin and the glycerol to obtain composite granules, and blow molding to obtain the inner layer film and the outer layer film. And (3) hot-pressing the inner film and the outer film, wherein carbon dioxide-nitrogen mixed gas is continuously blown between the two films in the hot-pressing process, and finally small air bags which are uniformly distributed are formed, namely the air bag layers.
According to the parts by weight, 100 parts of PBAT, 80 parts of nanocellulose, 50 parts of gelatin and 20 parts of glycerin and 50 parts of glycerin are fully mixed, and then mixed and granulated at 130 ℃ to obtain the composite granules. And (3) carrying out blow molding on the composite granules, wherein the blow molding temperature is 130 ℃, so as to obtain the single-layer preservative film, and an electron microscope image is shown in figure 1. And hot-pressing the two layers of preservative films at 130 ℃, and continuously blowing carbon dioxide-nitrogen mixed gas between the two layers of films in the hot-pressing process to form an air bag layer. The volume of the air bag is 0.2 cm 3 The thickness of the fresh-keeping film is 0.02mm, and the height of the air bag is 0.1cm.
Examples
A degradable preservative film for fruit and vegetable transportation is of a sandwich structure and comprises an inner film 1, an outer film 2 and an air bag layer 3.
The preparation method of the preservative film comprises the following steps: and (3) mixing and granulating the PBAT, the nano-cellulose, the gelatin and the glycerol to obtain composite granules, and blow molding to obtain the inner layer film and the outer layer film. And (3) hot-pressing the inner film and the outer film, wherein carbon dioxide-nitrogen mixed gas is continuously blown between the two films in the hot-pressing process, and finally small air bags which are uniformly distributed are formed, namely the air bag layers.
According to the parts by weight, 120 parts of PBAT, 100 parts of nanocellulose, 50 parts of gelatin and 30 parts of glycerol are fully mixed and then mixed and granulated at 150 ℃ to obtain the composite granules. And (3) carrying out blow molding on the composite granules, wherein the blow molding temperature is 140 ℃, and obtaining the single-layer preservative film. Hot-pressing the two layers of fresh-keeping films at 140 ℃, continuously blowing carbon dioxide-nitrogen mixed gas between the two layers of films in the hot-pressing process to form an air bag layer, wherein the air bag volume is 0.4cm 3 The thickness of the fresh-keeping film is 0.04mm, and the height of the air bag is 0.2 cm.
The anti-vibration preservative films prepared in the examples 1 and 2 are used for wrapping fruits which are easy to damage in the transportation process of strawberries, juicy peaches and the like, meanwhile, the conventional preservative film is used for wrapping the fruits as a contrast, the fruits are placed on a shaking table, the rotating speed of the shaking table is set to be 210r/min, and the time is set to be 20min. As a result, the damage degree of the surface of the fruit wrapped by the preservative film is obviously smaller than that of the fruit wrapped by the conventional preservative film, and the fruit juice exudation of the control group is obvious. Therefore, the preservative film prepared by the invention has good compression resistance and shock absorption functions in the use process, and can ensure that fruits and vegetables are fresh and intact to the greatest extent in the transportation process.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. The preservative film is characterized by being of a degradable preservative film and of a sandwich structure, and comprises an inner film, an air bag layer and an outer film.
2. The method for preparing the preservative film according to claim 1, characterized in that raw materials of PBAT, nanocellulose, gelatin and glycerin are mixed and granulated to obtain composite granules, and the composite granules are blow-molded to obtain an inner layer film and an outer layer film; and (3) hot-pressing the inner film and the outer film, wherein carbon dioxide-nitrogen mixed gas is continuously blown between the two films in the hot-pressing process, and finally uniformly distributed air bags are formed, namely the air bag layers.
3. The preparation method of claim 2, wherein the preservative film comprises, by mass, 100-120 parts of PBAT, 80-100 parts of nanocellulose, 50 parts of gelatin and 20-30 parts of glycerol.
4. The method according to claim 2, wherein the temperature of the mixed granulation is 130-150 ℃.
5. The method of claim 2, wherein the blow molding is performed at a temperature of 130-140 ℃ and the internal and external film hot pressing is performed at a temperature of 130-140 ℃.
6. The method of claim 2, wherein the balloon volume is 0.2-0.4cm 3 。
7. The method according to claim 2, wherein the thickness of the fresh-keeping film is 0.02-0.04mm, and the height of the air bag is 0.1-0.2 cm.
8. Use of the preservative film of claim 1 in the transportation of fruits and vegetables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310383492.6A CN116409545A (en) | 2023-04-12 | 2023-04-12 | Degradable preservative film for fruit and vegetable transportation and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310383492.6A CN116409545A (en) | 2023-04-12 | 2023-04-12 | Degradable preservative film for fruit and vegetable transportation and preparation method and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN116409545A true CN116409545A (en) | 2023-07-11 |
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| CN202310383492.6A Pending CN116409545A (en) | 2023-04-12 | 2023-04-12 | Degradable preservative film for fruit and vegetable transportation and preparation method and application thereof |
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|---|---|---|---|---|
| CN202344969U (en) * | 2011-10-14 | 2012-07-25 | 江阴升辉包装材料有限公司 | Co-extrusion preservative film with breathing function |
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| CN111937957A (en) * | 2020-07-31 | 2020-11-17 | 中华全国供销合作总社济南果品研究院 | Apple cold-storage moisturizing transport preservative film and preparation method thereof |
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| CN114106531A (en) * | 2022-01-28 | 2022-03-01 | 北京禾易和科技有限公司 | starch-PBAT degradable composite material and preparation method thereof |
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| CN115610065A (en) * | 2022-10-25 | 2023-01-17 | 北京化工大学 | Three-layer composite biodegradable film with slow release function |
-
2023
- 2023-04-12 CN CN202310383492.6A patent/CN116409545A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202344969U (en) * | 2011-10-14 | 2012-07-25 | 江阴升辉包装材料有限公司 | Co-extrusion preservative film with breathing function |
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| CN115610065A (en) * | 2022-10-25 | 2023-01-17 | 北京化工大学 | Three-layer composite biodegradable film with slow release function |
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