CN113039984A - Controllable water-resistant heat-resistant biodegradable mulching film and preparation method thereof - Google Patents
Controllable water-resistant heat-resistant biodegradable mulching film and preparation method thereof Download PDFInfo
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- CN113039984A CN113039984A CN201911379593.6A CN201911379593A CN113039984A CN 113039984 A CN113039984 A CN 113039984A CN 201911379593 A CN201911379593 A CN 201911379593A CN 113039984 A CN113039984 A CN 113039984A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/28—Multiple coating on one surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/716—Degradable
- B32B2307/7163—Biodegradable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/73—Hydrophobic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2410/00—Agriculture-related articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/28—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for farming
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Laminated Bodies (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention discloses a controllable waterproof and heat-resistant biodegradable mulching film and a preparation method thereof, wherein the controllable waterproof and heat-resistant biodegradable mulching film comprises a breathable waterproof film, an ultraviolet light-transmitting film and a fluorescent film, and the breathable waterproof film, the ultraviolet light-transmitting film and the fluorescent film are distributed at intervals. According to the invention, the local film is provided with the breathable waterproof film, the ultraviolet light-transmitting film and the fluorescent film which are distributed at intervals, wherein the ultraviolet light absorbers are sprayed on the inner surface layers of the ultraviolet light-transmitting film and the fluorescent film and are used for limiting the proportion of ultraviolet rays entering the ground film, so that the proportion of ultraviolet rays received by crops in the ground film can be reduced, the crops are prevented from being burnt, the breathable waterproof film has the functions of water locking and ventilation, the circulation of air in the ground film can be enhanced, in the method for preparing the ground film, the ultraviolet light-transmitting film and the fluorescent film are processed in a hot-pressing compounding mode, and the ultraviolet light absorbers are sprayed on one side after discharging.
Description
Technical Field
The invention relates to the technical field of mulching films, in particular to a controllable waterproof and heat-resistant biodegradable mulching film and a preparation method thereof.
Background
The mulching film, i.e., a ground covering film, is used for ground covering to increase the temperature of soil, maintain the moisture of the soil, maintain the structure of the soil, prevent pests from attacking crops and diseases caused by certain microorganisms, and the like, and promote the growth of plants.
At present, the mulching film commonly used for crops lacks an ultraviolet-proof function and a ventilation function, so that the crops can excessively accept excessive ultraviolet rays all day long or the crops can be burnt, the common mulching film only has a water locking function and does not have the ventilation function, the air circulation is not smooth, the oxygen supply is insufficient, and the growth of the crops is not facilitated due to bacterial breeding.
Therefore, the invention provides a controllable waterproof and heat-resistant biodegradable mulching film and a preparation method thereof.
Disclosure of Invention
The invention aims to: in order to solve the problem that the existing mulching film lacks the function of limiting ultraviolet rays and the function of ventilation, the controllable water-resistant heat-resistant biodegradable mulching film and the preparation method thereof are provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a controllable waterproof heat-resistant biodegradable mulching film comprises a breathable waterproof film, an ultraviolet light-transmitting film and a fluorescent film, wherein the breathable waterproof film, the ultraviolet light-transmitting film and the fluorescent film are distributed alternately.
As a further description of the above technical solution:
the width of the breathable waterproof membrane is 3-5 mm.
As a further description of the above technical solution:
the breathable waterproof membrane is made of nanometer-level PE high polymers.
As a further description of the above technical solution:
the ultraviolet light transmission film comprises a degradable base film and an ultraviolet absorbent positioned on the surface layer of the degradable base film, wherein the specific weight content of the ultraviolet absorbent is in the range of 60-80%.
As a further description of the above technical solution:
the inner surface layer of the fluorescent film 3 is coated with a fluorescent layer and an ultraviolet absorbent, and the specific weight content of the ultraviolet absorbent is 30-40%.
A preparation method of a controllable water-resistant heat-resistant biodegradable mulching film comprises the following steps:
step one, hot-pressing a composite breathable waterproof membrane: carrying out hot melting, extrusion and discharging on the nano-scale PE high polymer raw material, wherein the hot melting temperature is in the range of 60-80 ℃;
step two, thermally fusing, extruding and discharging the degradable base film raw material, and then spraying an ultraviolet absorbent on one side;
step three, thermally fusing, extruding and discharging the fluorescent film raw material, and then spraying an ultraviolet absorbent on one side;
step four, performing alternate extrusion and hot fusion on the breathable waterproof film, the degradable base film sprayed with the ultraviolet absorbent and the fluorescent film through an integrated die, wherein the fusion temperature is 45-50 DEG C
As a further description of the above technical solution:
and in the fourth step, when the composite breathable waterproof membrane, the degradable base membrane sprayed with the ultraviolet absorbent and the fluorescent membrane are subjected to alternate extrusion and hot melting through an integration mould, the adjacent edges are stacked, and the adhesive is sprayed.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the local film is provided with the breathable waterproof film, the ultraviolet light-transmitting film and the fluorescent film which are distributed at intervals, wherein the ultraviolet light absorbers are sprayed on the inner surface layers of the ultraviolet light-transmitting film and the fluorescent film and are used for limiting the proportion of ultraviolet light entering the ground film, so that the proportion of ultraviolet light received by crops in the ground film can be reduced, the crops are prevented from being burnt, the breathable waterproof film has the functions of water locking and ventilation, the circulation of air in the ground film can be enhanced, the ultraviolet light-transmitting film and the fluorescent film in the ground film are processed in a hot-pressing compounding mode, and the ultraviolet light absorbers are sprayed on one side after discharging.
2. According to the invention, the breathable waterproof film, the degradable base film sprayed with the ultraviolet absorbent and the fluorescent film are subjected to alternate extrusion and thermal fusion through an integration mold, the fusion temperature is 45-50 ℃, the breathable waterproof film, the degradable base film sprayed with the ultraviolet absorbent and the fluorescent film are subjected to extrusion molding through rollers, and the heating temperature of 45-50 ℃ is provided for the rollers, so that thermal crosslinking of the three films is realized without damaging respective characteristics.
Drawings
FIG. 1 is a schematic structural diagram of a controllable waterproof and heat-resistant biodegradable mulching film provided by the invention;
FIG. 2 is a schematic structural view of a cross-section of a controllable waterproof and heat-resistant biodegradable mulch ultraviolet light-transmitting film provided by the invention;
FIG. 3 is a schematic structural diagram of a cross-sectional view of a controllable waterproof and heatproof biodegradable plastic film fluorescent film provided by the invention;
fig. 4 is a statistical table of the all-day ultraviolet ray receiving proportion in the mulching film of the controllable waterproof and heat-resistant biodegradable mulching film provided by the invention.
Illustration of the drawings:
1. a breathable waterproof film; 2. an ultraviolet light-transmitting film; 21. a degradable basement membrane; 22. an ultraviolet absorber; 3. a fluorescent film; 31. a fluorescent layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-4, a controllable waterproof and heat-resistant biodegradable mulching film comprises a breathable waterproof film 1, an ultraviolet transparent film 2 and a fluorescent film 3, wherein the breathable waterproof film 1, the ultraviolet transparent film 2 and the fluorescent film 3 are alternately distributed, the width of the breathable waterproof film 1 is 3-5mm, the breathable waterproof film 1 is made of PE high polymer at nanometer level, the ultraviolet transparent film 2 comprises a degradable base film 21 and an ultraviolet absorbent 22 positioned on the surface layer of the degradable base film 21, and the specific gravity content of the ultraviolet absorbent 22 is in the range of 60%; fluorescent layer 31 and ultraviolet absorbent 22 are paintd to the inner surface layer of fluorescent screen 3, ultraviolet absorbent 22's specific gravity content is in 30% scope, it is moisture in the soil to lock through setting up ventilative waterproof membrane 1, can also increase the circulation of air, and provide fresh air in to the plastic film, the efficiency of ventilation degerming has, it has the function that reduces the penetrating volume of ultraviolet to pass through to have through setting up ultraviolet printing opacity membrane 2, from this the specific gravity content of ultraviolet absorbent 22 on degradable base film 21 top layer is in 60% scope, the ultraviolet absorbent 22 on fluorescent screen 3 top layer is 30%, the inside and outside ultraviolet proportion of plastic film is 1: 3.5, that is to say, the ultraviolet index in the mulching film is less than that in the mulching film, the ultraviolet proportion in the mulching film is in the maximum state required by the growth of crops, the hidden danger of sterilization and crop burn prevention is provided, and the time for the crops in the mulching film to receive light can be prolonged by arranging the fluorescent film 3.
Example 2
Referring to fig. 1 to 4, the difference from example 1 is that the uv absorber 22 has a specific gravity content of 80%; the fluorescent layer 31 and the ultraviolet absorbent 22 are coated on the inner surface layer of the fluorescent film 3, and when the specific gravity content of the ultraviolet absorbent 22 is 40%, the ratio of the ultraviolet rays inside and outside the mulching film is 1: 5.5, the ratio is combined with the state of minimum ultraviolet required by crops.
Example 3
With reference to the embodiment 1 and the embodiment 2, the preparation method of the controllable water-resistant and heat-resistant biodegradable mulching film comprises the following steps:
step one, hot-pressing a composite breathable waterproof membrane: the nanometer PE high polymer raw material is subjected to hot melting, extrusion and discharging, the hot melting temperature is in the range of 60-80 ℃, the nanometer PE high polymer raw material is convenient to soften in the temperature range, extrusion forming and discharging are convenient, and meanwhile, the nanometer PE high polymer raw material is uniformly distributed;
step two, thermally fusing and extruding the degradable base film raw material, discharging, and spraying an ultraviolet absorbent on one side, wherein the ultraviolet absorbent is sprayed in an atomized spraying manner, so that the coverage is more uniform;
step three, thermally fusing and extruding the fluorescent film raw material to discharge, and then spraying an ultraviolet absorbent on one side, wherein the ultraviolet absorbent is sprayed in an atomized spraying manner, so that the coverage is more uniform;
and step four, performing alternate extrusion and hot fusion on the breathable waterproof film, the degradable base film sprayed with the ultraviolet absorbent and the fluorescent film through an integration mould, wherein the fusion temperature is 45-50 ℃, and the breathable waterproof film, the degradable base film sprayed with the ultraviolet absorbent and the fluorescent film are subjected to extrusion molding through the rollers, and the heating temperature of 45-50 ℃ is provided for the rollers, so that the thermal cross-linking of the three films is realized, and the respective characteristics are not damaged.
Example 4
Based on the further description of example 3, when the breathable waterproof film, the degradable base film sprayed with the ultraviolet absorber and the fluorescent film are subjected to alternate extrusion and thermal fusion through the integrated mold, the adjacent edges are stacked and sprayed with the adhesive, and the connection strength between the three films can be improved by spraying the adhesive.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The controllable waterproof heat-resistant biodegradable mulching film is characterized by comprising a breathable waterproof film (1), an ultraviolet light-transmitting film (2) and a fluorescent film (3), wherein the breathable waterproof film (1), the ultraviolet light-transmitting film (2) and the fluorescent film (3) are distributed alternately.
2. The controllable waterproof and heatproof biodegradable mulching film and the preparation method thereof according to claim 1, wherein the width of the breathable waterproof film (1) is 3-5 mm.
3. The controllable waterproof and heatproof biodegradable mulching film and the preparation method thereof according to claim 2, wherein the breathable waterproof film (1) is made of nanometer-level PE polymer.
4. The controllable waterproof and heatproof biodegradable mulch film and the preparation method thereof according to claim 1, wherein the ultraviolet transparent film (2) comprises a degradable base film (21) and an ultraviolet absorbent (22) on the surface of the degradable base film (21), and the specific gravity content of the ultraviolet absorbent (22) is in the range of 60-80%.
5. The controllable waterproof and heatproof biodegradable mulch film and the preparation method thereof according to claim 4, wherein the fluorescent layer (31) and the ultraviolet absorber (22) are coated on the inner surface layer of the fluorescent film (3), and the specific gravity content of the ultraviolet absorber (22) is in the range of 30-40%.
6. The preparation method of the controllable waterproof and heatproof biodegradable mulching film according to claim 1, comprising the following steps:
step one, hot-pressing a composite breathable waterproof membrane: carrying out hot melting, extrusion and discharging on the nano-scale PE high polymer raw material, wherein the hot melting temperature is in the range of 60-80 ℃;
step two, thermally fusing, extruding and discharging the degradable base film raw material, and then spraying an ultraviolet absorbent on one side;
step three, thermally fusing, extruding and discharging the fluorescent film raw material, and then spraying an ultraviolet absorbent on one side;
and step four, performing alternate extrusion and hot fusion on the breathable waterproof film, the degradable base film sprayed with the ultraviolet absorbent and the fluorescent film through an integrated die, wherein the fusion temperature is 45-50 ℃.
7. The preparation method of the controllable waterproof and heat-resistant biodegradable mulching film according to claim 6, wherein in the fourth step, when the composite breathable waterproof film, the degradable base film sprayed with the ultraviolet absorber and the fluorescent film are subjected to alternate extrusion and thermal melting through an integrated mold, the adjacent edges are stacked, and an adhesive is sprayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911379593.6A CN113039984A (en) | 2019-12-27 | 2019-12-27 | Controllable water-resistant heat-resistant biodegradable mulching film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911379593.6A CN113039984A (en) | 2019-12-27 | 2019-12-27 | Controllable water-resistant heat-resistant biodegradable mulching film and preparation method thereof |
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| CN113039984A true CN113039984A (en) | 2021-06-29 |
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| CN201911379593.6A Pending CN113039984A (en) | 2019-12-27 | 2019-12-27 | Controllable water-resistant heat-resistant biodegradable mulching film and preparation method thereof |
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Citations (7)
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|---|---|---|---|---|
| CN1132219A (en) * | 1994-11-22 | 1996-10-02 | 韩华综合化学株式会社 | Agricultural fluorescent film having excellent resistance to weathering |
| CN102149272A (en) * | 2008-10-15 | 2011-08-10 | 学校法人东京理科大学 | Farm crop cultivation method using fluorescent emitting material and material to be used therein |
| CN105034497A (en) * | 2015-07-14 | 2015-11-11 | 雄县夏氏包装有限公司 | Waterproof air-permeable non-woven fabric and production process thereof |
| CN205682047U (en) * | 2016-06-14 | 2016-11-16 | 昆明学院 | A kind of tobacco cultivation with permeable watertight performance is mulching specially used |
| CN206840871U (en) * | 2017-06-22 | 2018-01-05 | 上海是大高分子材料有限公司 | A kind of macromolecule waterproof membrane |
| CN108207443A (en) * | 2017-12-26 | 2018-06-29 | 东莞市正新包装制品有限公司 | PE mulches |
| CN108464172A (en) * | 2018-03-22 | 2018-08-31 | 合肥申沃园艺有限公司 | A kind of compound covering film of degradable environment-friendly type |
-
2019
- 2019-12-27 CN CN201911379593.6A patent/CN113039984A/en active Pending
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|---|---|---|---|---|
| CN1132219A (en) * | 1994-11-22 | 1996-10-02 | 韩华综合化学株式会社 | Agricultural fluorescent film having excellent resistance to weathering |
| CN1075092C (en) * | 1994-11-22 | 2001-11-21 | 韩华综合化学株式会社 | Agricultural fluorescent film having excellent resistance to weathering |
| CN102149272A (en) * | 2008-10-15 | 2011-08-10 | 学校法人东京理科大学 | Farm crop cultivation method using fluorescent emitting material and material to be used therein |
| CN105034497A (en) * | 2015-07-14 | 2015-11-11 | 雄县夏氏包装有限公司 | Waterproof air-permeable non-woven fabric and production process thereof |
| CN205682047U (en) * | 2016-06-14 | 2016-11-16 | 昆明学院 | A kind of tobacco cultivation with permeable watertight performance is mulching specially used |
| CN206840871U (en) * | 2017-06-22 | 2018-01-05 | 上海是大高分子材料有限公司 | A kind of macromolecule waterproof membrane |
| CN108207443A (en) * | 2017-12-26 | 2018-06-29 | 东莞市正新包装制品有限公司 | PE mulches |
| CN108464172A (en) * | 2018-03-22 | 2018-08-31 | 合肥申沃园艺有限公司 | A kind of compound covering film of degradable environment-friendly type |
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| Title |
|---|
| 周祥兴: "《农用塑料制品的生产配方和生产工艺》", 30 September 2010, 中国物资出版社 * |
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Application publication date: 20210629 |