CN220520969U - Degradable high-barrier packaging paper - Google Patents
Degradable high-barrier packaging paper Download PDFInfo
- Publication number
- CN220520969U CN220520969U CN202322201776.7U CN202322201776U CN220520969U CN 220520969 U CN220520969 U CN 220520969U CN 202322201776 U CN202322201776 U CN 202322201776U CN 220520969 U CN220520969 U CN 220520969U
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- Prior art keywords
- layer
- paper
- utility
- model
- degradable
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 12
- 229920002472 Starch Polymers 0.000 claims abstract description 15
- 235000019698 starch Nutrition 0.000 claims abstract description 15
- 229920001661 Chitosan Polymers 0.000 claims abstract description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 14
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 14
- 239000008107 starch Substances 0.000 claims abstract description 14
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 13
- 239000000661 sodium alginate Substances 0.000 claims abstract description 13
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 13
- 230000004888 barrier function Effects 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 23
- 239000005022 packaging material Substances 0.000 abstract description 19
- 244000005700 microbiome Species 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 230000006872 improvement Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010893 paper waste Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002988 biodegradable polymer Polymers 0.000 description 1
- 239000004621 biodegradable polymer Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- -1 polybutylene succinate Polymers 0.000 description 1
- 239000004631 polybutylene succinate Substances 0.000 description 1
- 229920002961 polybutylene succinate Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- 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
- Laminated Bodies (AREA)
- Paper (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The utility model relates to degradable high-barrier packaging paper which comprises a base layer, wherein one side of the base layer is outwards coated with a starch layer, a chitosan layer, a polyvinyl alcohol layer and a sodium alginate layer in sequence. The present utility model provides a degradable paper packaging material having improved barrier properties, strength and re-suspension properties, and which can be easily degraded by microorganisms after use.
Description
Technical Field
The utility model relates to the technical field of packaging paper, in particular to degradable high-barrier packaging paper.
Background
Biodegradable polymers or nano materials such as polylactic acid, polybutylene succinate, nano zinc oxide and the like are added into the paper to improve the barrier property and strength of the paper. However, these solutions may increase the cost and complexity of the paper manufacturing process, and these additives may have adverse effects on the human body or the environment.
Biodegradable coatings or films, such as waxes, proteins, starches, etc., are applied to the paper to improve the barrier properties and strength of the paper. However, these solutions may affect the look and feel of the paper, and these coatings or films may not be easily separated from the paper, affecting the recyclability and degradability of the paper.
The structure or shape of the paper is changed, such as by using honeycomb or foam-like paper, to increase the strength of the paper. However, these solutions may affect the processing and use efficiency of the paper, and these structures or shapes may not be readily degraded by microorganisms.
Therefore, there is a need to develop a new method for preparing degradable paper packaging materials, which can overcome the disadvantages of the existing schemes and has better performance and environmental protection.
Disclosure of Invention
The present utility model aims to provide a degradable paper packaging material with improved barrier properties, strength and re-suspension properties, and which paper packaging material is capable of being easily degraded by microorganisms after use.
In order to realize the technical scheme, the technical scheme of the utility model is as follows: the degradable high-barrier packaging paper comprises a base layer, wherein one side of the base layer is outwards coated with a starch layer, a chitosan layer, a polyvinyl alcohol layer and a sodium alginate layer in sequence.
Further, the coating weight of the starch layer is 2-5 g/square meter.
Further, the coating weight of the chitosan layer is 2-5 g/square meter.
Further, the coating amount of the polyvinyl alcohol layer is 3-8 g/square meter.
Further, the coating weight of the sodium alginate layer is 2-5 g/square meter.
Compared with the prior art, the utility model has the following beneficial effects:
1) The degradable paper packaging material prepared by the utility model has obvious improvement on the aspect of barrier property. According to the experimental results, the transmission amounts of the degradable paper packaging material prepared by the utility model to moisture, oxygen, carbon dioxide and grease are respectively 2-10 g/square meter d, 1-3 cm < 3 >/square meter d.0.1 MPa, 2-6 cm < 3 >/square meter d.0.1M and 3-10 g/square meter d, and the barrier properties of the conventional paper packaging material to moisture, oxygen and carbon dioxide are extremely poor and exceed the detection limit of most detection instruments on the market. This shows that the degradable paper packaging material prepared by the utility model can effectively prevent the penetration of moisture, oxygen, carbon dioxide and grease, thereby prolonging the quality guarantee period of the packaged product.
2) The degradable paper packaging material prepared by the utility model has obvious improvement on the strength. According to the experimental results, the tensile strength of the degradable paper packaging material prepared by the utility model is 50MPa, and the tensile strength of the existing paper packaging material is 10MPa. This demonstrates that the degradable paper packaging material prepared by the utility model has high mechanical strength and can bear various external forces in the transportation and storage processes.
3) The degradable paper packaging material prepared by the utility model has obvious improvement on the re-suspension property. According to the experimental results, the degradable paper packaging material prepared by the utility model can easily separate the coating from the carrier paper after being soaked in water, and the cellulose fibers of the carrier paper can be resuspended in water, while the existing paper packaging material is difficult to separate the coating from the carrier paper after being soaked in water, and the cellulose fibers of the carrier paper are difficult to resuspend in water. This demonstrates that the degradable paper packaging material prepared by the utility model has good re-suspension property and can be easily recycled or reused after the coating is removed.
4) The degradable paper packaging material prepared by the utility model has obvious improvement on degradability. According to the experimental result, the 45-day biological decomposition rate of the degradable paper packaging material prepared by the utility model is 63.5%, the 80-day biological decomposition rate is 72.9%, and the 80-day relative biological decomposition rate is 97.7%. This shows that the degradable paper packaging material prepared by the utility model can be degraded by microorganisms in a short time after being used, and cannot cause secondary pollution to the environment.
Drawings
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
FIG. 1 is a front view of the degradable high barrier packaging paper of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.
Referring to fig. 1, the degradable high-barrier packaging paper comprises a base layer 1, wherein one side of the base layer 1 is coated with a starch layer 2, a chitosan layer 3, a polyvinyl alcohol layer 4 and a sodium alginate layer 5 in sequence. The preparation method comprises the following steps:
first: preparing a starch solution, dissolving starch in water according to a mass fraction of 10% (namely 10g of starch is dissolved in 100 g of water), and stirring for 30 minutes at 80 ℃ until the starch solution is uniform;
second,: preparing chitosan solution, dissolving chitosan in water according to the mass fraction of 5% (namely 5g of chitosan is dissolved in every 100 g of acetic acid) and acetic acid in the mass fraction of 1% (namely 1 g of acetic acid is dissolved in every 100 g of water), and stirring at 60 ℃ for 20 minutes until the chitosan solution is uniform;
third,: preparing a polyvinyl alcohol solution, dissolving polyvinyl alcohol in water according to the mass fraction of 10% (namely 10g of polyvinyl alcohol is dissolved in 100 g of water), and stirring at 90 ℃ for 40 minutes until the polyvinyl alcohol is uniform;
fourth,: preparing sodium alginate solution, dissolving sodium alginate in water according to a mass fraction of 5% (namely 5g sodium alginate is dissolved in 100 g water), and stirring for 10 minutes at 50 ℃ until the sodium alginate is uniform;
fifth,: preparing carrier paper, using waste paper or pulp board products as raw materials, and pulping by a conventional method to obtain paper pulp containing more than 80% of cellulose (the used waste paper or pulp board raw materials are determined according to the product application);
sixth: coating the starch solution on the carrier paper, and coating the starch solution on one or both sides of the carrier paper by using a coater or other modes, wherein the coating weight of each layer is 2-5 g/square meter;
seventh: coating chitosan solution on carrier paper coated with starch solution, and coating the chitosan solution on one or both sides of the carrier paper by using a coater or other modes, wherein the coating weight of each layer is 2-5 g/square meter;
eighth: coating the polyvinyl alcohol solution on the carrier paper coated with the chitosan solution, and coating the polyvinyl alcohol solution on one or both sides of the carrier paper by using a coater or other modes, wherein the coating weight of each layer is 3-8 g/square meter;
ninth,: coating sodium alginate solution on carrier paper coated with polyvinyl alcohol solution, and coating the sodium alginate solution on one or both sides of the carrier paper by using a coater or other modes, wherein the coating weight of each layer is 2-5 g/square meter;
tenth: the coated carrier paper is subjected to a drying process and dried using an oven or other means at 150 c for 10 minutes.
The utility model takes waste paper products as raw materials and coats four layers of natural polymers (starch, chitosan, polyvinyl alcohol and sodium alginate) as coating layers on carrier paper. These coatings can form a network structure that can enhance the barrier properties and strength of the paper, as well as improve the re-suspension of the cellulosic fibers. Moreover, these coatings are biodegradable and can be readily degraded by microorganisms after use. Thus, the present utility model provides a novel, simple, low cost and environment friendly design.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way, although the present utility model has been described above with reference to the preferred embodiments, and is not intended to limit the present utility model. Any person skilled in the art should make equivalent embodiments belonging to equivalent changes and modifications by using the technical content disclosed in the above description without departing from the technical content of the present utility model, but any brief introduction modification, equivalent changes and modifications made to the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (5)
1. The utility model provides a degradable high resistant separates wrapping paper, includes basic layer (1), its characterized in that: one side of the base layer (1) is outwards coated with a starch layer (2), a chitosan layer (3), a polyvinyl alcohol layer (4) and a sodium alginate layer (5) in sequence.
2. The degradable high barrier packaging paper of claim 1, wherein: the coating weight of the starch layer (2) is 2-5 g/square meter.
3. The degradable high barrier packaging paper of claim 1, wherein: the coating weight of the chitosan layer (3) is 2-5 g/square meter.
4. The degradable high barrier packaging paper of claim 1, wherein: the coating weight of the polyvinyl alcohol layer (4) is 3-8 g/square meter.
5. The degradable high barrier packaging paper of claim 1, wherein: the coating weight of the sodium alginate layer (5) is 2-5 g/square meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322201776.7U CN220520969U (en) | 2023-08-16 | 2023-08-16 | Degradable high-barrier packaging paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322201776.7U CN220520969U (en) | 2023-08-16 | 2023-08-16 | Degradable high-barrier packaging paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220520969U true CN220520969U (en) | 2024-02-23 |
Family
ID=89939804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322201776.7U Active CN220520969U (en) | 2023-08-16 | 2023-08-16 | Degradable high-barrier packaging paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220520969U (en) |
-
2023
- 2023-08-16 CN CN202322201776.7U patent/CN220520969U/en active Active
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| GR01 | Patent grant |