CN117207633A - Biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery industry and preparation method thereof - Google Patents
Biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery industry and preparation method thereof Download PDFInfo
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- CN117207633A CN117207633A CN202310682360.3A CN202310682360A CN117207633A CN 117207633 A CN117207633 A CN 117207633A CN 202310682360 A CN202310682360 A CN 202310682360A CN 117207633 A CN117207633 A CN 117207633A
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- 229920006167 biodegradable resin Polymers 0.000 title claims abstract description 190
- 241001465754 Metazoa Species 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims description 12
- 239000002346 layers by function Substances 0.000 claims abstract description 75
- 239000011241 protective layer Substances 0.000 claims abstract description 64
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000004615 ingredient Substances 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 17
- 241000196324 Embryophyta Species 0.000 claims description 17
- 235000015097 nutrients Nutrition 0.000 claims description 17
- 239000002028 Biomass Substances 0.000 claims description 14
- 239000000077 insect repellent Substances 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 8
- 235000017803 cinnamon Nutrition 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000012634 fragment Substances 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 7
- 241000723347 Cinnamomum Species 0.000 claims 2
- 238000012360 testing method Methods 0.000 description 58
- 230000012010 growth Effects 0.000 description 15
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- -1 polybutylene terephthalate Polymers 0.000 description 8
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- 241000208822 Lactuca Species 0.000 description 7
- 235000003228 Lactuca sativa Nutrition 0.000 description 7
- 229920003002 synthetic resin Polymers 0.000 description 7
- 239000000057 synthetic resin Substances 0.000 description 7
- 239000003208 petroleum Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 229930002875 chlorophyll Natural products 0.000 description 4
- 235000019804 chlorophyll Nutrition 0.000 description 4
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 4
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- 244000223760 Cinnamomum zeylanicum Species 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 244000144972 livestock Species 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention relates to a biodegradable resin sheet for agriculture, forestry, animal and fishery, comprising: the functional layer is composed of a mixture of at least one part of biodegradable resin and functional components mixed according to a preset mixing proportion; a first protective layer, at least a part of which is composed of a biodegradable resin, laminated on one surface of the functional layer so as to cover one of both surfaces of the functional layer; and a second protective layer, at least a part of which is composed of biodegradable resin, laminated on the other surface of the functional layer so as to cover the other surface opposite to the one surface of the two surfaces of the functional layer.
Description
Technical Field
The invention relates to a biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery and a preparation method thereof.
Background
Petrochemical-based synthetic resins developed in the beginning of the 20 th century are widely used for various purposes in the agriculture, forestry, animal husbandry and fishery industries due to their excellent characteristics of light weight, rigidity and low cost.
In general, methods for disposing synthetic resin waste are generally used in the form of landfill or incineration. However, in the case of landfill treatment of synthetic resin, it takes more than 500 years for natural decomposition to cause serious soil pollution, and in the case of incineration treatment of synthetic resin, a large amount of dioxin, volatile organic compounds (VOC, volatile organic compounds), harmful gases such as carbon dioxide, and greenhouse gases are generated. Therefore, in order to reduce the amount of petrochemical-based synthetic resins used, biodegradable resins for replacing synthetic resins have been actively developed, and even in the field of agriculture, forestry, animal and fishery industry, biodegradable resin sheets for agriculture, forestry, animal and fishery industry have been actively developed in order to replace petrochemical-based synthetic resin sheets.
On the other hand, in the case of biodegradable resin sheets for agriculture, forestry, animal and fishery used in the agriculture, animal and fishery field, there are cases where functional components are added, for example, nutrient components of crops, other plants, insect-repellent components, etc., and a predetermined function is performed as released or eluted or volatilized from the biodegradable resin during the biodegradation of the biodegradable resin. However, the conventional biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery has a problem that the function of the functional component cannot be expressed at an appropriate time because release, elution or volatilization of the functional component occurs irregularly according to the preparation, distribution, storage and use environment.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery, which can prevent loss of functional components during preparation, distribution, and storage, and can express the functions of the functional components at a predetermined target time even during use or after discarding.
In order to achieve the above object, a biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery according to a preferred embodiment of the present invention comprises: the functional layer is composed of a mixture of at least one part of biodegradable resin and functional components mixed according to a preset mixing proportion; a first protective layer, at least a part of which is composed of a biodegradable resin, laminated on one surface of the functional layer so as to cover one of both surfaces of the functional layer; and a second protective layer, at least a part of which is composed of biodegradable resin, laminated on the other surface of the functional layer so as to cover the other surface opposite to the one surface of the two surfaces of the functional layer.
Preferably, the biodegradable resin contains biomass in a predetermined proportion or more.
Preferably, in the above mixing ratio, the biodegradable resin is 90 to 97% by weight, and the functional component is 3 to 10% by weight.
Preferably, the functional ingredient contains at least one of a nutrient ingredient and an insect-repellent ingredient for plants.
Preferably, the nutrient component includes at least one of calcium carbonate and a salt-removed shell.
Preferably, the insect control ingredient comprises cinnamon.
In order to achieve the above object, a method for preparing biodegradable resin sheets for agriculture, forestry, animal husbandry and fishery according to still another preferred embodiment of the present invention comprises: a step (a) of forming a biodegradable resin sheet having a three-layer laminated structure, the biodegradable resin sheet including a functional layer, a first protective layer, and a second protective layer, the functional layer being composed of a mixture in which at least a part of biodegradable resin and functional components are mixed in a predetermined mixing ratio, at least a part of the first protective layer being composed of biodegradable resin, and being laminated on one surface of the functional layer so as to cover one surface of both surfaces of the functional layer, and at least a part of the second protective layer being composed of biodegradable resin, and being laminated on the other surface of the functional layer so as to cover the other surface of both surfaces of the functional layer opposite to the one surface; and (b) recovering the biodegradable resin sheet.
Preferably, the biodegradable resin is a biodegradable resin containing biomass in a predetermined ratio or more.
Preferably, in the above mixing ratio, the biodegradable resin is 90 to 97% by weight, and the functional component is 3 to 10% by weight.
Preferably, the functional ingredient contains at least one of a nutrient ingredient and an insect-repellent ingredient for plants.
Preferably, the nutrient component includes at least one of calcium carbonate and a salt-removed shell.
Preferably, the insect control ingredient comprises cinnamon.
Preferably, the method further comprises: a step (c) of pulverizing the biodegradable resin; and (d) forming biodegradable resin particles by molding the pulverized biodegradable resin, wherein in the step (a), the biodegradable resin sheet is formed by using the biodegradable resin particles.
Preferably, in the step (c), the biodegradable resin chips cut from the biodegradable resin bag are crushed to form a handle of the biodegradable resin bag.
The invention relates to a biodegradable resin sheet for agriculture, forestry, animal and fishery industry and a preparation method thereof, which provides the biodegradable resin sheet for agriculture, forestry, animal and fishery industry with a three-layer laminated structure, wherein a functional layer added with functional components is arranged between a pair of protective layers and is not exposed to the outside. In the preparation, circulation and storage processes of biodegradable resin sheets for agriculture, forestry, animal husbandry and fishery, the invention can prevent loss of functional components through the protective layer, and can express functions of the functional components along with release, dissolution or volatilization of the functional components after the protective layer is biodegraded only when the protective layer is used in a state of being buried in soil or is discarded in the soil according to use application. Thus, the biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery can adjust the functional expression time of the functional ingredient to express the function of the functional ingredient at a predetermined target time.
Drawings
FIG. 1 is a cross-sectional view of a biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery according to a preferred embodiment of the present invention.
Fig. 2 is a flowchart for explaining a method of producing the biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery shown in fig. 1.
Fig. 3 is a conceptual diagram for explaining an apparatus for performing a preparation process shown in fig. 2.
Fig. 4 is a sectional view showing a brief structure of the mold shown in fig. 3.
Fig. 5 is a photograph showing the state of the test crop after being planted in the test zone and the control zone, respectively.
Fig. 6 is a photograph showing the state of test crops after one week after being planted in a test zone and a control zone, respectively.
Fig. 7 is a photograph showing the state of test crops after three weeks of planting in a test zone and a control zone, respectively.
Fig. 8 is a photograph showing the growth state of test crops on the overground parts, which are planted in a test zone and a control zone, respectively.
Fig. 9 is a photograph showing the growth state of test crops planted in a test zone and a control zone, respectively, in the subsurface.
Description of the reference numerals
1: food container
10: functional layer
20: first protective layer
30: a second protective layer
40: crushing machine
50: particle forming machine
60: sheet forming machine 61: first extruder
62: a second extruder 63: third extruder
64: molds 65, 66: cooling roller
70: winding machine
Bb: biodegradable resin bag Br: biodegradable resin chip
Bp: biodegradable resin particles Bm: biodegradable resin melt
Bs: biodegradable resin sheet fabric
A: functional component Am: functional component melt
Detailed Description
Some embodiments of the invention are described in detail below with reference to the attached drawings. When reference numerals are given to constituent elements in the respective drawings, the same reference numerals are used as much as possible for the same constituent elements even when the reference numerals are given to the constituent elements in the other drawings. In describing the embodiments of the present invention, if it is determined that detailed descriptions of known structures or functions thereof are to be included in the specific embodiments of the present invention, the detailed descriptions thereof will be omitted.
In describing the structural elements of the embodiments of the present invention, terms such as "first", "second", "a", "B", etc. may be used. Such terms are merely used to distinguish one structural element from another, and the nature, order, sequence, etc. of the corresponding structural elements is not limited by the terms described above. Also, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as 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.
FIG. 1 is a cross-sectional view of a biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery according to a preferred embodiment of the present invention.
Referring to fig. 1, a biodegradable resin sheet 1 for agriculture, forestry, animal husbandry, fishery, etc. according to a preferred embodiment of the present invention relates to a functional sheet for agriculture, forestry, animal husbandry, fishery, etc., comprising: a functional layer 10 composed of biodegradable resin and a functional ingredient A; a first protective layer 20 composed of a biodegradable resin, laminated on one of both sides of the functional layer 10; and a second protective layer 30 composed of a biodegradable resin and laminated on the other surface opposite to the one surface of the two surfaces of the functional layer 10.
The thickness of the biodegradable resin sheet 1 for agriculture, forestry, animal and fishery is not particularly limited, and the biodegradable resin sheet 1 for agriculture, animal and fishery may be formed to have a predetermined standard thickness according to the durability of the biodegradable resin sheet 1 for agriculture, animal and fishery, the use of the biodegradable resin sheet 1 for agriculture, animal and fishery, the target function expression time of the functional component a, and the like. For example, the standard thickness of the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery may be 5mm to 8mm.
The functional layer 10 and the plurality of protective layers 20 and 30 preferably have the same thickness, but are not limited thereto. For example, the functional expression time of the functional component a is proportional to the thickness of the protective layer 20, and the functional layer 10 and the plurality of protective layers 20, 30 may be set to different thicknesses according to the use of the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry, and the target functional expression time of the functional component a.
First, the functional layer 10 is a layer that provides a predetermined function by the functional component a. Such a functional layer 10 is interposed between the first protective layer 20 and the second protective layer 30, and is not exposed to the outside until the first protective layer 20 and the second protective layer 30 are biodegradable.
The functional layer 10 is composed of a mixture of a biodegradable resin and a functional ingredient a at least partially mixed in a predetermined mixing ratio. The mixing ratio of the biodegradable resin and the functional ingredient a is not particularly limited. For example, in the mixing ratio of the biodegradable resin and the functional ingredient a, the biodegradable resin may be 90 to 97% by weight, and the functional ingredient a may be 3 to 10% by weight.
Further, the biodegradable resin suitable for the functional layer 10 is preferably a biodegradable resin containing biomass in a predetermined ratio or more. For example, the biodegradable resin suitable for the functional layer 10 may be a biodegradable resin satisfying korean environmental mark certification EL724 or EL 727.
When the biodegradable resin suitable for the functional layer 10 satisfies EL724, the biodegradable resin suitable for the functional layer 10 may contain 70 wt% or more of biomass and less than 30 wt% of petroleum-based resin. In contrast, when the biodegradable resin applied to the functional layer 10 satisfies EL727, the biodegradable resin applied to the functional layer 10 may contain 30 wt% or more of biomass and less than 70 wt% of petroleum-based resin. However, the biodegradable resin applied to the functional layer 10 is not limited thereto, and may be a biodegradable resin obtained by mixing biomass and petroleum-based resin in a ratio different from those of the above-described EL724 and EL 727.
The biomass suitable for the functional layer 10 is not particularly limited. For example, biomass suitable for the functional layer 10 may include at least one of natural biomass such as polylactic acid (PLA), petroleum-based biomass such as polybutylene terephthalate (PBAT, poly butylene adipate-co-terephthalate), aliphatic polybutylene succinate (PBS, poly butylene succinate).
The petroleum-based resin to be applied to the functional layer 10 is not particularly limited. For example, the petroleum-based resin suitable for the functional layer 10 may be polypropylene (PP), polyethylene (PE), acrylonitrile butadiene styrene (ABS, acrylonitrile butadiene styrene), polyethylene terephthalate (PET, polyethylene terephthalate), or the like.
The type of the functional component a suitable for the functional layer 10 is not particularly limited, and the functional component a may be composed of one of a plurality of components capable of realizing a specific use in agriculture, forestry, animal husbandry, fishery, and the agricultural, forestry, and fishery application of the biodegradable resin sheet 1.
For example, when the biodegradable resin sheet 1 for agriculture, forestry, livestock and fishery is used as a raw material for a product for cultivating plants in the agricultural field such as a seedling container, the functional component a may contain at least one of a nutrient component for supplying a nutrient component for crops and other plants and an insect-repellent component for preventing insect damage caused by plant pests.
The type of the nutrient component is not particularly limited. For example, the nutritional ingredients may include calcium carbonate (CaCO) 3 ) At least one of oyster shell and other shells. In particular, the shell is preferably a desalted shell with a salt content below a predetermined level, but is not limited theretoHere.
Wherein the calcium carbonate can be used as an antibacterial and moisture-proof component for removing bacteria and moisture in the air. Therefore, the product produced by using the biodegradable resin sheet 1 for agriculture, forestry, livestock and fishery industry, in which calcium carbonate is added as a functional component, can be used not only for plant cultivation but also for packaging agricultural products, livestock products, water products, and the like.
In the field of fishery, a large amount of oyster shells and other various shells are produced, but currently, such shells cannot be recycled and discarded. However, the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery can prevent environmental pollution caused by shells and realize recycling of resources by using shells as a nutrient component.
The type of insect-repellent component is not particularly limited. For example, the insect repellent ingredient may be cinnamon powder.
The functional component a applied to the functional layer 10 is preferably in the form of powder processed to have a particle size of a predetermined standard or less, but is not limited thereto.
Next, the first protective layer 20 serves to prevent the functional component a added to the functional layer 10 from being released, eluted, or volatilized through one of the upper and lower surfaces of the functional layer 10. Such a first protective layer 20 is laminated on one side of the functional layer 10, and covers one side of the functional layer 10 to prevent exposure to the outside.
Preferably, at least a portion of such a first protective layer 20 is composed of a biodegradable resin, but is not limited thereto. Preferably, when the first protective layer 20 is composed of a biodegradable resin, the biodegradable resin suitable for the first protective layer 20 may be a biodegradable resin containing biomass in a predetermined ratio or more. In this case, preferably, the biodegradable resin suitable for the first protective layer 20 is the same as the biodegradable resin suitable for the functional layer 10. For example, the biodegradable resin suitable for the first protective layer 20 may be a biodegradable resin satisfying korean environmental mark certification EL724 or EL 727.
Subsequently, the second protective layer 30 serves to prevent the functional component a added to the functional layer 10 from being released, eluted, or volatilized through the other surface opposite to the surface on which the above-described first protective layer is laminated, of the upper and lower surfaces of the functional layer 10. Such a second protective layer 30 is laminated on the other surface of the functional layer 10, and covers the other surface of the functional layer 10 to prevent exposure to the outside.
Preferably, at least a portion of such a second protective layer 30 is composed of a biodegradable resin, but is not limited thereto. Preferably, when the second protective layer 30 is composed of a biodegradable resin, the biodegradable resin suitable for the second protective layer 30 may be a biodegradable resin containing biomass in a predetermined ratio or more. In this case, it is preferable that the biodegradable resin suitable for the second protective layer 30 is the same as the biodegradable resin suitable for the functional layer 10. For example, the biodegradable resin suitable for the second protective layer 30 may be a biodegradable resin satisfying korean environmental mark certification EL724 or EL 727.
As described above, the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery is of a three-layer laminated structure, and the functional layer 10 to which the functional component a is added is interposed between the pair of protective layers 20, 30 to prevent exposure to the outside. The biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery can delay the time for releasing, dissolving or volatilizing the functional component a added to the functional layer 10 until the time for biodegradation of the plurality of protective layers 20, 30. Thus, in the case of use in a state of being buried in soil, that is, when used in an environment in which the biodegradable resin can be biodegraded, the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery can prevent the loss of the functional component a by the plurality of protective layers 20, 30 during the preparation, circulation and storage, and during the use, the function of the functional component a corresponding to the use of the biodegradable resin sheet 1 for agriculture, animal husbandry and fishery can be expressed at a predetermined target time by adjusting the functional expression time of the functional component a as the plurality of protective layers 20, 30 are gradually biodegraded. In addition, when the biodegradable resin sheet 1 is used in an environment where the biodegradable resin cannot be biodegraded, the loss of the functional ingredient a can be prevented by the plurality of protective layers 20 and 30 during the preparation, distribution, storage and use, and the function of the functional ingredient a beneficial to plants and soil can be expressed by adjusting the functional expression time of the functional ingredient a only after the plurality of protective layers 20 and 30 are biodegraded after the biodegradable resin is landfilled in the soil.
Fig. 2 is a flowchart for explaining a method of preparing biodegradable resin sheets for agriculture, forestry, animal husbandry, and fishery shown in fig. 1, fig. 3 is a conceptual diagram for explaining an apparatus for performing a preparation process shown in fig. 2, and fig. 4 is a sectional view showing a schematic structure of a mold shown in fig. 3.
Referring to fig. 2, the method of preparing the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery may include: step S10, preparing biodegradable resin suitable for the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery; step S20, crushing the biodegradable resin; a step S30 of forming biodegradable resin particles Bp by molding a pulverized biodegradable resin (not shown); step S40 of forming a biodegradable resin sheet material Bs having a three-layer laminated structure, comprising a functional layer 10, a first protective layer 20 and a second protective layer 30, wherein at least a part of the functional layer 10 is composed of biodegradable resin and a functional component a by processing biodegradable resin particles Bp and the functional component, at least a part of the first protective layer 20 is composed of biodegradable resin and laminated on one of the upper and lower surfaces of the functional layer 10, and at least a part of the second protective layer 30 is composed of biodegradable resin and laminated on the other of the upper and lower surfaces of the functional layer 10; and a step S50 of recovering the biodegradable resin sheet material Bs.
First, in step S10, a biodegradable resin for forming the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry, and fishery is prepared. As shown in fig. 3, in this step S10, preferably, in order to form a handle, the biodegradable resin chips Br cut from the biodegradable resin bag Bb are reused as the biodegradable resin material for forming the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry, and fishery, so that the biodegradable resin chips Br are collected and prepared.
Thereafter, as shown in fig. 3, in step S20, the biodegradable resin fragments Br and other biodegradable resins collected and prepared in step S10 are pulverized by using a pulverizer 40.
Next, as shown in fig. 3, in step S30, the biodegradable resin pulverized material pulverized in step S20 is molded by using a particle molding machine 50 to form biodegradable resin particles Bp.
Subsequently, in step S40, the biodegradable resin particles Bp and the functional ingredient a are processed by using the sheet forming machine 60 to form a biodegradable resin sheet material Bs having a three-layer laminated structure in which at least a part of the functional layer 10 composed of the biodegradable resin and the functional ingredient a is interposed between at least a part of the first protective layer 20 and the second protective layer 30 each composed of the biodegradable resin.
The structure of the sheet molding machine 60 is not particularly limited. For example, as shown in fig. 3 and 4, there may be provided a first extruder 61, a second extruder 62, a third extruder 63, a die 64, a pair of cooling rolls 65, 66, and the like, the first extruder 61 heating and melt-kneading the biodegradable resin particles Bp for forming the functional layer 10 and the functional ingredient a, the second extruder 62 heating and melt-kneading the biodegradable resin particles Bp for forming the first protective layer 20, the third extruder 63 heating and melt-kneading the biodegradable resin particles Bp for forming the second protective layer 30, and the die 64 forming the biodegradable resin sheet facer Bs having a three-layer laminated structure by extruding the following materials: the biodegradable resin melt Bm and the functional ingredient melt Am discharged in a mixed state from the first extruder 61; the biodegradable resin melt Bm discharged at the second extruder 62; the biodegradable resin melt Bm discharged from the third extruder 63, a plurality of cooling rolls 65, 66 are arranged such that the biodegradable resin sheet surface material Bs formed in the die 64 is interposed between the plurality of cooling rolls 65, 66, and the biodegradable resin sheet Bs is compressed so as to have a predetermined standard thickness.
Further, the functional component a is preferably supplied by putting a masterbatch in which the biodegradable resin particles Bp and the functional component a are mixed in a predetermined ratio into the first extruder 61, but is not limited thereto. That is, the biodegradable resin particles Bp and the functional ingredient a may be supplied to the first extruder 61. In this case, the functional component a is preferably supplied by a method such as the insertion of a solid powder, mixing or spraying of liquid particles of the corresponding functional component a, but is not limited thereto.
On the other hand, in the process S40, the formation of the biodegradable resin sheet facings Bs by pressing the functional layer 10 and the plurality of protective layers 20, 30 in a mutually laminated form using the die 64 has been described, but is not limited thereto. For example, the functional layer facing, the first protective layer facing, and the second protective layer facing may be formed by extrusion using a plurality of dies (not shown) combined with a plurality of extruders (not shown) or any one of the plurality of extruders, and then the functional layer facing, the first protective layer facing, and the second protective layer facing may be laminated by using a lamination roller or another lamination device (not shown), thereby forming the biodegradable resin sheet facing Bs. In this case, the functional component a may be supplied to an extruder for forming the functional layer facing together with the biodegradable resin particles Bp to be added to the functional layer facing, but is not limited thereto. That is, after the biodegradable resin particles Bp are supplied to the extruder to form the functional layer sheet, the functional ingredient a may be applied to the functional layer sheet.
Next, in step S50, the biodegradable resin sheet material is wound and recovered into a roll state by using the winding machine 70.
However, the present invention is not limited thereto, and in step S50, after the biodegradable resin sheet material is cut into a predetermined size by a cutter (not shown), a plurality of unit biodegradable resin sheets formed in the above manner may be loaded in a loading box (not shown) and recovered.
Fig. 5 is a photograph showing the state of the test crop planted in the test zone and the control zone, respectively, fig. 6 is a photograph showing the state of the test crop planted in the test zone and the control zone, respectively, after one week, and fig. 7 is a photograph showing the state of the test crop planted in the test zone and the control zone, respectively, after three weeks.
Fig. 8 is a photograph showing the growth state of the test crop planted in the test zone and the control zone, respectively, on the ground, and fig. 9 is a photograph showing the growth state of the test crop planted in the test zone and the control zone, respectively, on the underground.
The following describes the results of a plant cultivation test using the agricultural, forestry, animal husbandry, and fishery tablet 1 according to a preferred embodiment of the present invention, with reference to fig. 5 to 9.
1. Purpose of test
In this test, a plant cultivation test was performed by using a seedling raising container prepared by using the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry, and fishery of the preferred embodiment of the present invention, in which a nutrient component for crops and other plants was added as a functional component, and the effect of the biodegradable resin sheet 1 for agriculture, forestry, fishery of the preferred embodiment of the present invention on plant growth was examined and used as environmental protection and other agricultural application data.
2. Test and control areas
The seedling raising container prepared using the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry, and fishery of the preferred embodiment of the present invention, in which the nutrient is added as the functional component, was used as a test zone (treatment zone), and a general seedling raising container containing no nutrient was used as a control zone (untreated zone), and differences in growth characteristics between plants cultivated in the test zone and plants cultivated in the control zone were examined. The growth characteristics survey was conducted centering on the overground growth and the underground growth of plants, and no nutrient components other than irrigation (water) were supplied during the survey period.
3. Test method
(1) Characteristics of bed soil
Cultivation tests were carried out using commercially available ultra-lightweight bed soil No. 2 for gardening as the bed soil for test.
(2) Test site and test area
1) Test site
Cultivation experiments were performed in a greenhouse to create an optimal environment by adjusting temperature and humidity.
2) Test scale
The cultivation test was repeatedly performed 3 times for the test area and the control area of 36 ports.
(3) Investigation of crop characteristics
1) Date of test
(1) Receiving date: 2022, 08 and 30 days
(2) Receiving a number: EFAP-22-1169-F
(3) Test time: 2022, 08, 30-2022, 10 and 25 days
(4) Release date: 2022, 10, 25 days
2) Test crop (variety): lettuce (lettuce: self-raising seedling)
3) Major survey items: growth characteristics of test and control areas, etc
Growth characteristics of lettuce: leaf length (cm), leaf width (cm), leaf weight (g), leaf number (No./plant), chlorophyll (SPAD), root weight (g)
4) For the measurement results, the significance was checked by performing Duncan's multiple range test by performing Duncan multiple range test after calculating the mean and standard deviation by using SPSS statistics 19program and performing one-way ANOVA.
5) By using a chlorophyll meter (chlorophyll meter) (model: SPAD-502, minolta, japan) measured chlorophyll content in the center portion of the longest leaf.
(4) Cultivation management
1) The facility management confirms the temperature and humidity at least twice daily so as to cultivate crops in a glass greenhouse provided with a heating and cooling machine and an automatic opening and closing type shading film.
2) Irrigation with the spray pipes is once or twice daily, depending on the season and temperature/humidity.
4. Test results
(1) Overground growth characteristics of lettuce
In order to examine the extent of growth of lettuce by the test zone, leaf length, leaf width, she Xianchong, leaf number and the like were examined in the manner shown in table 1 below. The test zone growth investigation increased by 6.3% compared to the control zone relative to leaf length, which means that there was a statistical significance. The test area was 7.35cm relative to the leaf width, the control area was 6.85cm, and an increase of 6.8% in the test area compared to the control area was confirmed, so that there was a significance in the statistical aspect. The tendency of the test area to increase by 8.1% was confirmed as compared to She Xianchong, which was similar to the leaf length and leaf width. The test area was increased by 6.2% relative to the control area, with significance on a statistical level.
TABLE 1
To examine root growth of lettuce, root weight of the subsurface was measured. The root weight of the test zone was increased by 10.6% relative to the root weight of the subsurface, and there was a statistical significance (Table 2: subsurface growth survey results of lettuce).
TABLE 2
| Treatment zone | Root weight (g/plant) |
| Test area | 2.18b |
| Control zone | 1.95a |
5. Summary of results
(1) In the test area composed of the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery according to the preferred embodiment of the present invention, the result of increasing the growth amount (leaf length, leaf width, leaf number, leaf fresh weight) of the overground part of the test crop was obtained.
(2) In the test zone consisting of the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery according to the preferred embodiment of the present invention, the weight of the root in the test zone (treated zone) was increased by 10.6% as a result of measuring the weight of the root in the underground part of the test crop, compared to the control zone (untreated zone).
(3) The test area composed of the biodegradable resin sheet 1 for agriculture, forestry, animal husbandry and fishery according to the preferred embodiment of the present invention has an effect that the growth characteristics of the test crop gradually improve as approaching the latter half of the test period, compared to the control area, and thus it was confirmed that the functional expression time of the functional ingredient a can be regulated by the protective layers 20, 30.
The above description is merely illustrative of the technical idea of the present invention, and various modifications and variations may be made by those skilled in the art to which the present invention pertains without departing from the essential characteristics of the present invention.
Accordingly, the embodiments disclosed in the present invention are for explaining the technical idea of the present invention, but not limiting the scope of the technical idea of the present invention is not limited to these embodiments. The scope of the present invention should be interpreted by the scope of the appended claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.
Claims (14)
1. A biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery, characterized in that the biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery comprises:
the functional layer is composed of a mixture of at least one part of biodegradable resin and functional components mixed according to a preset mixing proportion;
a first protective layer, at least a part of which is composed of a biodegradable resin, laminated on one surface of the functional layer so as to cover one of both surfaces of the functional layer; and
and a second protective layer, at least a part of which is composed of a biodegradable resin, which is laminated on the other surface of the functional layer so as to cover the other surface opposite to the one surface of the two surfaces of the functional layer.
2. The biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery according to claim 1, wherein said biodegradable resin comprises biomass in a predetermined ratio or more.
3. The biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery according to claim 1, wherein the biodegradable resin is 90 to 97 wt% and the functional component is 3 to 10 wt% in the mixing ratio.
4. The biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery according to claim 1, wherein said functional component comprises at least one of a nutrient component and an insect-repellent component for plants.
5. The biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery according to claim 4, wherein said nutrient component comprises at least one of calcium carbonate and a salt-removed shell.
6. The biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery according to claim 4, wherein said insect-repellent ingredient comprises cinnamon.
7. The preparation method of the biodegradable resin sheet for the agriculture, forestry, animal husbandry and fishery industries is characterized by comprising the following steps of:
a step (a) of forming a biodegradable resin sheet having a three-layer laminated structure, the biodegradable resin sheet including a functional layer, a first protective layer, and a second protective layer, the functional layer being composed of a mixture in which at least a part of biodegradable resin and functional components are mixed in a predetermined mixing ratio, at least a part of the first protective layer being composed of biodegradable resin, and being laminated on one surface of the functional layer so as to cover one surface of both surfaces of the functional layer, and at least a part of the second protective layer being composed of biodegradable resin, and being laminated on the other surface of the functional layer so as to cover the other surface of both surfaces of the functional layer opposite to the one surface; and
and (b) recovering the biodegradable resin sheet.
8. The method for producing a biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery according to claim 7, wherein said biodegradable resin comprises biomass in a predetermined ratio or more.
9. The method for producing a biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery according to claim 7, wherein the amount of the biodegradable resin is 90 to 97% by weight, and the amount of the functional component is 3 to 10% by weight.
10. The method for producing a biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery according to claim 7, wherein said functional component comprises at least one of a nutrient component and an insect-repellent component for plants.
11. The method for producing a biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery according to claim 10, wherein said nutrient component comprises at least one of calcium carbonate and a salt-removed shell.
12. The method for producing a biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery according to claim 10, wherein said insect-repellent ingredient comprises cinnamon.
13. The method for producing a biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery according to claim 7, further comprising:
a step (c) of pulverizing the biodegradable resin; and
a step (d) of forming biodegradable resin particles by molding the pulverized biodegradable resin,
in the step (a), the biodegradable resin sheet is formed by using the biodegradable resin particles.
14. The method for producing a biodegradable resin sheet for agriculture, forestry, animal husbandry, and fishery according to claim 13, wherein in the step (c), the biodegradable resin fragments cut from the biodegradable resin bag are crushed to form a handle of the biodegradable resin bag.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0070418 | 2022-06-09 | ||
| KR1020230073171A KR20230169859A (en) | 2022-06-09 | 2023-06-07 | Biodegradable resin sheet for agriculture, forestry, livestock, fisheries and method for manufacturing the same |
| KR10-2023-0073171 | 2023-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117207633A true CN117207633A (en) | 2023-12-12 |
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ID=89046828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310682360.3A Pending CN117207633A (en) | 2022-06-09 | 2023-06-09 | Biodegradable resin sheet for agriculture, forestry, animal husbandry and fishery industry and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117207633A (en) |
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2023
- 2023-06-09 CN CN202310682360.3A patent/CN117207633A/en active Pending
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