WO2011034262A1 - Method for manufacturing a biodegradable agricultural mulching film for directly seeding rice, and method for directly seeding rice using the biodegradable agricultural mulching film manufactured by the method - Google Patents

Method for manufacturing a biodegradable agricultural mulching film for directly seeding rice, and method for directly seeding rice using the biodegradable agricultural mulching film manufactured by the method Download PDF

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Publication number
WO2011034262A1
WO2011034262A1 PCT/KR2010/000032 KR2010000032W WO2011034262A1 WO 2011034262 A1 WO2011034262 A1 WO 2011034262A1 KR 2010000032 W KR2010000032 W KR 2010000032W WO 2011034262 A1 WO2011034262 A1 WO 2011034262A1
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Prior art keywords
mulching film
rice
biodegradable agricultural
agricultural mulching
poly
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PCT/KR2010/000032
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French (fr)
Korean (ko)
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이영국
이상한
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(주)바이오엣
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A01C1/04—Arranging seed on carriers, e.g. on tapes, on cords ; Carrier compositions
    • A01C1/044—Sheets, multiple sheets or mats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
    • B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
    • B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0063—Cutting longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/04—Polyesters derived from hydroxycarboxylic acids
    • B29K2067/043—PGA, i.e. polyglycolic acid or polyglycolide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/04—Polyesters derived from hydroxycarboxylic acids
    • B29K2067/046—PLA, i.e. polylactic acid or polylactide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0059—Degradable
    • B29K2995/006—Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones

Definitions

  • the present invention relates to a method for producing a biodegradable agricultural mulching film for direct growing of rice and a rice direct growing method using a biodegradable agricultural mulching film produced therefrom.
  • Rice farming Since the natural environment of our country belongs to the monsoon region, where the temperature is high and the rainfall is high in summer, rice farming is suitable, and the culture of the culture has been formed through a long history. Rice farming has a large economic weight as a source of farmers' rice, and rice is a healthy food with various nutrients.
  • the direct cultivation method is a method in which seeds are not grown in seedlings but are seeded directly in the field until they are harvested and grown on the spot.
  • the rice transplanting method is generally used rather than the direct cultivation method in rice cultivation.
  • direct cultivation was carried out in relatively limited areas because of irrigation facilities and rice farming based on rainwater.
  • Such a direct cultivation method has the advantage of reducing the effort of planting and mechanization is possible from rice field to harvest, but it is inadequate except in special areas because the damage caused by weeds is difficult and two crops are difficult. Due to the excessive use of rice seed oil and herbicides caused by algae, there is a problem that the cultivation area is not greatly improved.
  • an object of the present invention is to provide a method for producing a biodegradable agricultural mulching film for direct cultivation of rice, and a rice direct cultivation method using a biodegradable agricultural mulching film prepared therefrom.
  • the present invention provides a biodegradable film raw material mixture prepared by mixing a calcium carbonate encapsulated with stearic acid with a raw material in the form of a powder or pellets composed of an aliphatic polyester material, and then preparing a biodegradable film raw material mixture.
  • the present invention is a biodegradable agricultural mulching film for direct cultivation of rice prepared by the above, rice using the biodegradable agricultural mulching film comprising the step of flocculating the rice seed attached to the film on the rice paddy bottom so as to contact the rice paddy bottom.
  • a direct growing method Provides a direct growing method.
  • the present invention can omit the mosquitoes and the transplanting step, can reduce the labor force and costs, can significantly reduce the production cost, and at the same time do not need herbicides or weeding work Compared to conventional farming methods, it is possible to grow rice in an environmentally friendly manner without additional production costs.
  • the present invention can not only maintain the warmth while preventing rice seed from algae or other damage, as well as using a biodegradable agricultural mulching film for direct cultivation of rice is biodegradable in the natural state without the need for separate collection.
  • FIG. 1 is a view showing a biodegradable agricultural mulching film for direct cultivation of rice obtained from the manufacturing method of a biodegradable agricultural mulching film for direct growing of rice.
  • Figure 2 is obtained from the manufacturing method of the biodegradable agricultural mulching film for direct growing of rice
  • Figure 3 is a view showing the biodegradable agricultural mulching film for rice cultivation for the straight-hole cultivation of rice formed from the manufacturing method of the biodegradable agricultural mulching film for direct cultivation of rice symmetrical in two directions with a predetermined interval.
  • Step 1 preparing a biodegradable film raw material mixture by mixing calcium carbonate encapsulated with raw esteraric acid in powder or pellet form composed of aliphatic polyester material, and then injecting the prepared biodegradable film raw material mixture into the inlet of the extruder.
  • This step 1 is to prepare a mulching film raw material mixture by mixing the calcium carbonate encapsulated with stearic acid in the powder or pellet form of the aliphatic polyester material, and then injecting the prepared mulching film raw material mixture into the input unit of the extruder .
  • the present invention is a carbonic acid encapsulated with stearic acid in a raw material in the form of powder or pellets composed of aliphatic polyester material for producing a biodegradable agricultural mulching film for direct growing of rice while reducing the production cost of mulching film in the mulching film used for agriculture Mixing calcium to prepare a mulching film raw material mixture.
  • the present invention uses a raw material in the form of powder or pellets composed of aliphatic polyester material to produce a biodegradable agricultural mulching film, which is environmentally polluted because it is decomposed by microorganisms in a natural state even after being exposed to the outside or embedded in soil. This is because it is eco-friendly because it can prevent the cost and reduce the social cost of waste disposal.
  • the aliphatic polyester used in the present invention is not limited to a specific kind, preferably PBS (Poly (butylene succinate)), PAS (Poly (butyleneadipate)), PGA (Poly (glycolic acid)), PLA (Poly (lactic acid), PC (Poly ( ⁇ -caprolatone)), PHV (Poly (hydroxy valerate)), PBSA (Poly (butylene succinateadipate)), PGLA (Poly (glycolic acid-co-latic acid)), PHBV (Poly (hydroxybutyrate valerate)) and PBAT (Poly (butyrate adipate terephthalate)) is one or more selected from.
  • PBS Poly (butylene succinate)
  • PAS Poly (butyleneadipate)
  • PGA Poly (glycolic acid)
  • PLA Poly (lactic acid), PC (Poly ( ⁇ -caprolatone)
  • PHV Poly (hydroxy valerate)
  • PBSA Poly (
  • the present invention necessarily includes calcium carbonate encapsulated with stearic acid, by using a calcium carbonate encapsulated with stearic acid can reduce the amount of relatively expensive aliphatic polyester, aliphatic by lowering the specific gravity of the biodegradable agricultural mulching film Since the volume of the biodegradable mulching film produced compared to the amount of polyester can be increased, the production cost can be reduced and it is economically efficient.
  • the calcium carbonate can be dispersed well to produce a biodegradable agricultural mulching film without foreign matter, and calcium carbonate has the advantage of increasing the heat resistance of the biodegradable agricultural mulching film.
  • calcium carbonate encapsulated with stearic acid is preferably preferably 0.01 ⁇ 1 ⁇ m, when exceeding 1 ⁇ m is difficult to produce a biodegradable agricultural mulching film having a low specific gravity because the dispersion is not made well.
  • the mulching film raw material mixture is preferably formed by replacing 5 to 45% by weight of the raw material in the form of powder or pellets composed of aliphatic polyester material encapsulated with stearic acid, the mulching film composed of aliphatic polyester material This is because the physical properties are similar and the specific gravity can be lowered, thereby effectively reducing the production cost.
  • the mulching film raw material mixture preferably contains an additional cellulose or starch
  • the cellulose is a biodegradable biodegradable formed by the combination of cellobiose consisting of two molecules of glucose (monosaccharide) and decomposed by microorganisms to be.
  • the cellulose or starch used is most preferably 20 ⁇ m ⁇ 40 ⁇ m, 0.5 ⁇ 5% by weight of the mulching film raw material mixture It is good to be added instead.
  • Step 2 blow molding the mulching film raw material mixture discharged from the input through one discharge port
  • This step 2 is a step of blow molding the mulching film raw material mixture discharged from the inlet through one discharge port.
  • Blow molding is a method of molding by injecting raw materials and supplying air using a compressor to the inside of the tube when the raw materials are dissolved and eluted through the discharge port through the extruder.
  • the present invention can produce a biodegradable agricultural mulching film for direct cultivation of rice by blow molding the mulching film raw material mixture discharged from the inlet through one discharge port.
  • Step 3 cutting the longitudinal section of the blow molded product to obtain a biodegradable agricultural mulching film by winding the cut blow molded product in the form of a film to each unfold.
  • This step 3 is a step of obtaining a biodegradable agricultural mulching film by cutting the longitudinal section of the blow molding to wind the cut blow molding in the form of film to each unfold.
  • the blow molded product produced in step 2 is difficult to use as a mulching film because it is a continuous form. Accordingly, the present invention is to cut the longitudinal cross-section of the moldings that are connected to each other to unfold the blow moldings in the form of a film to each easily wound around the paper pipe for transport and storage.
  • the mulching film made in this way has an advantage of reducing labor costs because the volume of the aliphatic polyester is increased compared to the amount of use thereof, and thus the production efficiency is good, and the biodegradability does not require separate collection.
  • Step 4 after drilling a plurality of holes in the biodegradable agricultural mulching film obtained at a predetermined interval, attaching rice seed around the hole
  • This step 4 is a step of attaching rice seed around the hole after drilling a plurality of holes at a predetermined interval in the biodegradable agricultural mulching film obtained in step 3.
  • the present invention drills a plurality of holes in the biodegradable agricultural mulching film obtained in step 3 at regular intervals, so that the infant germinated from the rice seed attached around the hole can extend over the mulching film.
  • a plurality of holes is preferably drilled at regular intervals so that intertidal and daytime 100 ⁇ 400mm.
  • planting means the width of the planted plant, and the weekly "between and between trees”.
  • the present invention after drilling a plurality of holes in a predetermined interval on the obtained biodegradable agricultural mulching film, attaching rice seed around the hole; Then preferably additionally, may include the step of minimizing rice seed.
  • the holes punched in the obtained biodegradable agricultural mulching film is preferably formed to be symmetrical to each other in four directions with a predetermined interval or formed to be symmetrical to each other in two directions with a certain interval or diameter 10mm ⁇ 50mm, Rice seed stuck around the hole is preferably 2-10.
  • the spacing between the rice seeds of the present invention is pasted at intervals such as to give up water per unit area of rice planting.
  • the present invention is a rice straight wave using a biodegradable mulching film for biodegradable agricultural mulching film comprising the step of arranging the biodegradable agricultural mulching film for direct cultivation of rice prepared by the above, so that the rice seed attached to the film abuts the bottom of the paddy field.
  • a cultivation method Provide a cultivation method.
  • the present invention is a biodegradable agricultural mulching film for direct cultivation of rice prepared in the above, the rice seed adhered to the film on the rice paddy bottom so as to contact the bottom of the rice paddy, because the rice seed can be kept warm while being able to prevent rice seed from algae or other damages. .
  • the rice cultivation method is usually seeded and disinfected by seeding and disinfection of rice seedlings, after sprouting, after raising some seedlings, transfer the seedlings to the rice paddy (Iang)
  • the rice direct cultivation method of the present invention is the rice seed attached to the film It is very easy to avoid mosquitoes and transplanting the seedlings to the rice paddies by placing them on the rice pads so that they touch the rice paddies.
  • the biodegradable agricultural mulching film for direct cultivation of rice is biodegradable even if not separately collected, it is possible to prevent environmental pollution and reduce labor due to collection, and to prevent weeds, thereby preventing the use of herbicides.
  • mulching film raw material mixture was prepared by mixing 60% by weight of the raw material in the form of powder or pellets composed of PBAT (Poly (butyrate adipate terephth)), an aliphatic polyester, and 40% by weight of calcium carbonate encapsulated with stearic acid.
  • the film raw material mixture was put into the input part of an extruder. After the mulching film raw material mixture discharged from the input part is blow-molded through one discharge port, the longitudinal section of the obtained blow molding is cut and wound around the branch pipe to unfold the cut blow molding into a film form.
  • a film (Example 1) was prepared.
  • the biodegradability of the biodegradable agricultural mulching film for direct cultivation of rice prepared in Example 1 was measured.
  • Example 1 having a thickness of 200 ⁇ m was cut into 0.5 ⁇ 0.5 cm, and sterilized separately with 70% alcohol and added in an amount of 2% (w / v). 30 ml of the medium prepared as described above was placed in a 100 ml Erlenmeyer flask, and 100 ⁇ l of the soil microorganism was inoculated.
  • Soil microorganism was used to scrape the surface of the soil, suspended 1g of this in 10ml sterile distilled water, left for 10 minutes, and took the clear water part of the above. Inoculating the cells by the above method and incubating the cells for 8 weeks while stirring at 30 rpm at a speed of 150 rpm, Example 1 was collected after 8 weeks, and Example 1 before the cultivation and Example 1 after the cultivation with a scanning probe microscope (SPM). : Scanning probe microscopy) was observed. The magnification of the microscope was adjusted to about 50,000 times.
  • SPM scanning probe microscope
  • Example 1 before the cultivation the surface was clean, but Example 1 after 8 weeks was found to be biodegraded by soil microorganisms with a lot of holes.
  • the volume ratio of the biodegradable agricultural mulching film for direct cultivation of rice prepared in Example 1 and Comparative Example 1 was measured.
  • Example 1 As a result of measuring the volume of the mulching film produced by the method of Example 1 and the biodegradable agricultural mulching film for direct growing of rice produced by the method of Comparative Example 1, Example 1 had a specific gravity of about 1.1 and Comparative Example 1 had a specific gravity of 1.26. It was. Therefore, Example 1 was confirmed that the volume increased by about 15% than Comparative Example 1 was able to reduce the material cost.
  • the biodegradable agricultural mulching film for direct cultivation of rice prepared in Example 1 was toothed on the bottom of the paddy so that the rice seed attached to the film abuts the bottom of the paddy field.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Protection Of Plants (AREA)
  • Biological Depolymerization Polymers (AREA)

Abstract

According to the present invention, a method for manufacturing a biodegradable agricultural mulching film for directly seeding rice comprises the steps of: (A) manufacturing a mixture of raw materials for the biodegradable agricultural mulching film by mixing a raw material having a powder or pellet form and consisting of aliphatic polyester material having encapsulated calcium carbonate containing stearic acid, and then inputting the manufactured mixture of raw materials for the biodegradable agricultural mulching film through an inputting gate of an extruder; (B) blow-molding the mixture of raw materials for the biodegradable agricultural mulching film discharged from the inputting gate through one ejection hole; (C) longitudinally cutting the resultant blow-molded material and obtaining the biodegradable agricultural mulching film by winding the cut blow-molded material around a paper tube so as to be spread as a film; and (D) forming openings in the obtained biodegradable agricultural mulching film at regular intervals, and then attaching rice seeds around the openings.

Description

벼의 직파재배용 생분해 농업용 멀칭 필름의 제조방법 및 그로부터 제조된 생분해 농업용 멀칭필름을 이용한 벼 직파재배방법Method for producing biodegradable agricultural mulching film for direct growing of rice and method for direct growing of rice using biodegradable agricultural mulching film produced therefrom
본 발명은 벼의 직파재배용 생분해 농업용 멀칭 필름의 제조방법 및 그로부터 제조된 생분해 농업용 멀칭필름을 이용한 벼 직파재배방법에 관한 것이다.The present invention relates to a method for producing a biodegradable agricultural mulching film for direct growing of rice and a rice direct growing method using a biodegradable agricultural mulching film produced therefrom.
아시아에서는 매년 약 3억 톤의 쌀(벼)이 생산되고 10억이 넘는 인구가 쌀을 주식으로 생활하고 있으며, 쌀을 다른 작물과 같이 혼합 또는 가공하여 이용하는 경우까지 합하면 세계인구의 약 절반이 쌀을 주식으로 이용하는 것으로 알려져 있다.In Asia, about 300 million tons of rice are produced every year, and more than 1 billion people live on staple rice. About half of the world's population is added to rice when mixed or processed with other crops. It is known to use as a stock.
우리 나라의 자연환경은 여름철에 기온이 높고 강우량이 많은 몬순아시아권에 속해 있기 때문에 벼 농사가 적합하여 오랜 역사를 통하여 도작문화가 형성되어왔다. 쌀 농사는 농가의 주소득원으로서 경제적 비중이 크고, 쌀은 여러가지 영양성분을 고루 갖춘 건강식이다.Since the natural environment of our country belongs to the monsoon region, where the temperature is high and the rainfall is high in summer, rice farming is suitable, and the culture of the culture has been formed through a long history. Rice farming has a large economic weight as a source of farmers' rice, and rice is a healthy food with various nutrients.
한편, 직파재배방법이란, 씨앗을 묘상에 육묘하지 않고 본답에 직접 파종하여 수확할 때까지 그 자리에서 자라게 하는 방법으로, 현재는 벼의 재배에 있어서직파재배방법 보다는 이앙재배방법이 일반적으로 사용되고 있다. 하지만 관개수를빗물에만 의존하는 천수답에서 가뭄에 대비하여 농사를 행하던 옛날에는,관개설비가 불완전하고 빗물에 의지하여 벼농사를 지었기 때문에 비교적 제한된 지역에서 직파재배방법이 주로 실시되었다.On the other hand, the direct cultivation method is a method in which seeds are not grown in seedlings but are seeded directly in the field until they are harvested and grown on the spot. Currently, the rice transplanting method is generally used rather than the direct cultivation method in rice cultivation. . However, in the past when farming for drought in the shallow water, where irrigation water depended solely on rainwater, direct cultivation was carried out in relatively limited areas because of irrigation facilities and rice farming based on rainwater.
이러한, 직파재배방법은 모내기의 노력이 절감되는 이점이 있고, 논갈이에서수확까지 기계화생력화가 가능하지만, 잡초에 의한 피해가 크고 2모작도 곤란하므로 특수지역을 제외하고는 부적당하며, 볍씨 노출로 인해 조류로 인한 볍씨유실 및 제초제의 과다 사용으로 인하여 재배면적이 크게 향상되지 못하는 문제점이 있다.Such a direct cultivation method has the advantage of reducing the effort of planting and mechanization is possible from rice field to harvest, but it is inadequate except in special areas because the damage caused by weeds is difficult and two crops are difficult. Due to the excessive use of rice seed oil and herbicides caused by algae, there is a problem that the cultivation area is not greatly improved.
이에 본 발명은 상기와 같은 문제점을 해결하고자 벼의 직파재배용 생분해 농업용 멀칭 필름의 제조방법 및 그로부터 제조된 생분해 농업용 멀칭필름을 이용한 벼 직파재배방법을 제공하는 데 그 목적이 있다.Accordingly, an object of the present invention is to provide a method for producing a biodegradable agricultural mulching film for direct cultivation of rice, and a rice direct cultivation method using a biodegradable agricultural mulching film prepared therefrom.
상기의 목적을 달성하기 위해 본 발명은 (A) 지방족폴리에스테르 재질로 구성된분말 또는 펠렛 형태의 원료에 스테아린산으로 캡슐화된 탄산칼슘을 혼합하여 생분해 필름 원료혼합물을 제조한 후, 제조된 생분해 필름 원료혼합물을 압출기의 투입부로 투입하는 단계; (B) 투입부로부터 배출되는 생분해 필름 원료혼합물이 하나의 토출구를 통해 블로우 성형되는 단계; (C) 상기 블로우 성형물의 종단면을 절단하여 절단된 블로우 성형물을 필름 형태로 각각 펴지도록 지관에 감아 생분해 농업용 멀칭필름을 수득하는 단계; 및 (D) 상기에서 수득된 생분해 농업용 멀칭필름에 다수의 구멍을 일정 간격으로 뚫은 후, 구멍 주변에 볍씨를 붙이는 단계를 포함하는 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법을 제공한다.In order to achieve the above object, the present invention provides a biodegradable film raw material mixture prepared by mixing a calcium carbonate encapsulated with stearic acid with a raw material in the form of a powder or pellets composed of an aliphatic polyester material, and then preparing a biodegradable film raw material mixture. Injecting into the inlet of the extruder; (B) blow molding the biodegradable film raw material mixture discharged from the inlet through one outlet; (C) cutting the longitudinal section of the blow molded product to obtain a biodegradable agricultural mulching film by winding the cut blow molded product in the form of a film to be unfolded in a film form; And (D) drilling a plurality of holes in the biodegradable agricultural mulching film obtained above at regular intervals, and then attaching rice seeds around the holes to provide a manufacturing method of the biodegradable agricultural mulching film for rice cultivation. do.
또한, 본 발명은 상기에 의해 제조된 벼의 직파재배용 생분해 농업용 멀칭필름을, 필름에 붙은 볍씨가 논 바닥과 맞닿도록 논 바닥에 치상하는 단계를 포함하는 것을 특징으로 하는 생분해 농업용 멀칭필름을 이용한 벼 직파재배방법을 제공한다.In addition, the present invention is a biodegradable agricultural mulching film for direct cultivation of rice prepared by the above, rice using the biodegradable agricultural mulching film comprising the step of flocculating the rice seed attached to the film on the rice paddy bottom so as to contact the rice paddy bottom. Provides a direct growing method.
상기에서 살펴본 바와 같이 본 발명은 모기르기와 이앙단계를 생략할 수 있고, 감비 효과가 있으며 노동력과 비용을 감소할 수 있어 생산비를 획기적으로 줄일 수 있으며, 동시에 멀칭까지 하므로 제초제나 제초작업이 필요 없고 관행농법에비해 생산비의 추가 부담 없이 벼를 친환경적으로 재배할 수 있는 효과를 발휘한다.As described above, the present invention can omit the mosquitoes and the transplanting step, can reduce the labor force and costs, can significantly reduce the production cost, and at the same time do not need herbicides or weeding work Compared to conventional farming methods, it is possible to grow rice in an environmentally friendly manner without additional production costs.
또한, 본 발명은 볍씨를 조류나 기타 피해로부터 예방할 수 있으면서 보온을유지할 수 있을 뿐만 아니라, 벼의 직파재배용 생분해 농업용 멀칭필름을 사용하기때문에 별도의 수거가 필요 없이 자연 상태에서 생분해가 된다.In addition, the present invention can not only maintain the warmth while preventing rice seed from algae or other damage, as well as using a biodegradable agricultural mulching film for direct cultivation of rice is biodegradable in the natural state without the need for separate collection.
도 1은 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법으로부터 수득된 벼의 직파재배용 생분해 농업용 멀칭필름을 나타낸 도면이다.1 is a view showing a biodegradable agricultural mulching film for direct cultivation of rice obtained from the manufacturing method of a biodegradable agricultural mulching film for direct growing of rice.
도 2는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법으로부터 수득된Figure 2 is obtained from the manufacturing method of the biodegradable agricultural mulching film for direct growing of rice
구멍이 일정간격을 두고 서로 4방향으로 대칭되도록 형성된 벼의 직파재배용 생분해 농업용 멀칭필름을 나타낸 도면이다.It is a view showing a biodegradable agricultural mulching film for direct cultivation of rice formed so that the holes are symmetrical in four directions with a predetermined interval.
도 3은 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법으로부터 수득된구멍이 일정간격을 두고 서로 2방향으로 대칭되도록 형성된 벼의 직파재배용 생분해 농업용 멀칭필름을 나타낸 도면이다.Figure 3 is a view showing the biodegradable agricultural mulching film for rice cultivation for the straight-hole cultivation of rice formed from the manufacturing method of the biodegradable agricultural mulching film for direct cultivation of rice symmetrical in two directions with a predetermined interval.
이하, 본 발명의 과제 해결 수단에 대해 단계별로 세분화하여 상세히 설명하고자 한다.Hereinafter, the problem solving means of the present invention will be described in detail by dividing step by step.
단계 1: 지방족폴리에스테르 재질로 구성된 분말 또는 펠렛 형태의 원료 에스테아린산으로 캡슐화된 탄산칼슘을 혼합하여 생분해 필름 원료혼합물을 제조한 후, 제조된 생분해 필름 원료혼합물을 압출기의 투입부로 투입하는 단계Step 1: preparing a biodegradable film raw material mixture by mixing calcium carbonate encapsulated with raw esteraric acid in powder or pellet form composed of aliphatic polyester material, and then injecting the prepared biodegradable film raw material mixture into the inlet of the extruder.
본 단계 1은 지방족폴리에스테르 재질로 구성된 분말 또는 펠렛 형태의 원료에 스테아린산으로 캡슐화된 탄산칼슘을 혼합하여 멀칭 필름 원료혼합물을 제조한후, 제조된 멀칭 필름 원료혼합물을 압출기의 투입부로 투입하는 단계이다.This step 1 is to prepare a mulching film raw material mixture by mixing the calcium carbonate encapsulated with stearic acid in the powder or pellet form of the aliphatic polyester material, and then injecting the prepared mulching film raw material mixture into the input unit of the extruder .
본 발명은 농업용에 사용되는 멀칭필름에 있어서, 멀칭필름의 생산비용을 감소시키면서 벼의 직파재배용 생분해 농업용 멀칭필름을 제조하기 위해 지방족폴리에스테르 재질로 구성된 분말 또는 펠렛 형태의 원료에 스테아린산으로 캡슐화된 탄산칼슘을 혼합하여 멀칭필름 원료혼합물을 제조한다.The present invention is a carbonic acid encapsulated with stearic acid in a raw material in the form of powder or pellets composed of aliphatic polyester material for producing a biodegradable agricultural mulching film for direct growing of rice while reducing the production cost of mulching film in the mulching film used for agriculture Mixing calcium to prepare a mulching film raw material mixture.
본 발명은 생분해 농업용 멀칭필름을 제조하기 위해 지방족폴리에스테르 재질로 구성된 분말 또는 펠렛 형태의 원료를 사용하는데, 이는 사용시 외부에 노출되어 있거나 토양에 매립된 뒤에도 자연상태에서 미생물에 의해 분해되기 때문에 환경오염을 방지할 수 있고 폐 처리에 따른 사회적 비용을 경감시킬 수 있어 친환경적이기 때문이다.The present invention uses a raw material in the form of powder or pellets composed of aliphatic polyester material to produce a biodegradable agricultural mulching film, which is environmentally polluted because it is decomposed by microorganisms in a natural state even after being exposed to the outside or embedded in soil. This is because it is eco-friendly because it can prevent the cost and reduce the social cost of waste disposal.
한편, 본 발명에서 사용한 지방족폴리에스테르는 특정 종류에 한정되는 것은아니나, 바람직하게는 PBS(Poly(butylene succinate)), PAS(Poly(butyleneadipate)), PGA(Poly(glycolic acid)), PLA(Poly(lactic acid), PCL(Poly(ε-caprolatone)), PHV(Poly(hydroxy valerate)), PBSA(Poly(butylene succinateadipate)), PGLA(Poly(glycolic acid-co-latic acid)), PHBV(Poly(hydroxybutyrate valerate)) 및 PBAT(Poly(butyrate adipate terephthalate)) 중 선택되는 어느 하나 이상인 것이 좋다.On the other hand, the aliphatic polyester used in the present invention is not limited to a specific kind, preferably PBS (Poly (butylene succinate)), PAS (Poly (butyleneadipate)), PGA (Poly (glycolic acid)), PLA (Poly (lactic acid), PC (Poly (ε-caprolatone)), PHV (Poly (hydroxy valerate)), PBSA (Poly (butylene succinateadipate)), PGLA (Poly (glycolic acid-co-latic acid)), PHBV (Poly (hydroxybutyrate valerate)) and PBAT (Poly (butyrate adipate terephthalate)) is one or more selected from.
한편, 본 발명은 스테아린산으로 캡슐화된 탄산칼슘을 반드시 포함하는 데, 스테아린산으로 캡슐화된 탄산칼슘을 사용함으로써 상대적으로 고가인 지방족폴리에스테르의 사용량을 줄일 수 있고, 생분해 농업용 멀칭필름의 비중을 낮춤으로써지방족폴리에스테르의 사용량 대비 생산된 생분해 농업용 멀칭필름의 부피를 증가시킬 수 있기 때문에 생산비용을 절감할 수 있어 경제적으로 효율적이다. 또한, 스테아린산으로 탄산칼슘을 캡슐화함으로써 탄산칼슘의 분산이 잘 이루어져 이물감 없이 생분해 농업용 멀칭필름을 생산할 수 있고, 탄산칼슘이 생분해 농업용 멀칭필름의 내열성을 증가시키는 장점도 있다.On the other hand, the present invention necessarily includes calcium carbonate encapsulated with stearic acid, by using a calcium carbonate encapsulated with stearic acid can reduce the amount of relatively expensive aliphatic polyester, aliphatic by lowering the specific gravity of the biodegradable agricultural mulching film Since the volume of the biodegradable mulching film produced compared to the amount of polyester can be increased, the production cost can be reduced and it is economically efficient. In addition, by encapsulating calcium carbonate with stearic acid, the calcium carbonate can be dispersed well to produce a biodegradable agricultural mulching film without foreign matter, and calcium carbonate has the advantage of increasing the heat resistance of the biodegradable agricultural mulching film.
한편, 스테아린산으로 캡슐화된 탄산칼슘은 바람직하게 0.01~1㎛인 것이 좋은데, 1㎛를 초과하는 경우에는 분산이 잘 이루어지지 않아 비중이 낮은 생분해 농업용 멀칭필름을 제조하는데 어려움이 발생한다.On the other hand, calcium carbonate encapsulated with stearic acid is preferably preferably 0.01 ~ 1㎛, when exceeding 1㎛ is difficult to produce a biodegradable agricultural mulching film having a low specific gravity because the dispersion is not made well.
한편, 멀칭필름 원료혼합물은 바람직하게 스테아린산으로 캡슐화된 탄산칼슘이 지방족폴리에스테르 재질로 구성된 분말 또는 펠렛 형태의 원료를 5~45 중량% 대체하여 조성되는 것이 좋은데, 지방족폴리에스테르 재질로 구성된 멀칭필름과 물성이 유사하면서 비중을 낮출 수 있어 생산비용을 효율적으로 절감할 수 있기 때문이다.On the other hand, the mulching film raw material mixture is preferably formed by replacing 5 to 45% by weight of the raw material in the form of powder or pellets composed of aliphatic polyester material encapsulated with stearic acid, the mulching film composed of aliphatic polyester material This is because the physical properties are similar and the specific gravity can be lowered, thereby effectively reducing the production cost.
한편, 멀칭필름 원료혼합물은 바람직하게 셀룰로오스 또는 전분을 추가적으로 함유하는 것이 좋은데, 셀룰로오스는 단당류(monosaccharide)인 글루코오스(glucose) 2분자로 이루어진 셀로비오스(cellobiose)가 결합하여 이뤄지고 미생물에 의해 분해되는 생분해성이다. 본 발명은 셀룰로오스를 추가적으로 함유함으로써통기성 및 통수성이 우수한 멀칭필름을 제조할 수 있고, 사용되는 셀룰로오스 또는전분은 가장 바람직하게 20㎛~40㎛인 것이 좋으며, 멀칭필름 원료혼합물을 0.5~5 중량% 대체하여 첨가되는 것이 좋다.On the other hand, the mulching film raw material mixture preferably contains an additional cellulose or starch, the cellulose is a biodegradable biodegradable formed by the combination of cellobiose consisting of two molecules of glucose (monosaccharide) and decomposed by microorganisms to be. In the present invention, by additionally containing cellulose, it is possible to produce a mulching film excellent in breathability and water permeability, the cellulose or starch used is most preferably 20㎛ ~ 40㎛, 0.5 ~ 5% by weight of the mulching film raw material mixture It is good to be added instead.
단계 2: 투입부로부터 배출되는 멀칭필름 원료혼합물이 하나의 토출구를 통해 블로우 성형되는 단계Step 2: blow molding the mulching film raw material mixture discharged from the input through one discharge port
본 단계 2는 투입부로부터 배출되는 멀칭필름 원료혼합물이 하나의 토출구를통해 블로우 성형되는 단계이다.This step 2 is a step of blow molding the mulching film raw material mixture discharged from the inlet through one discharge port.
블로우 성형이란 원료를 주입하여 압출기를 통해 원료가 용해되어 토출구를통해 용출될 때 관의 내부로 콤프레서를 이용하여 공기를 공급함으로써 성형하는 방법이다.Blow molding is a method of molding by injecting raw materials and supplying air using a compressor to the inside of the tube when the raw materials are dissolved and eluted through the discharge port through the extruder.
본 발명은 투입부로부터 배출되는 멀칭필름 원료혼합물이 하나의 토출구를 통해 블로우 성형을 실시함으로써 벼의 직파재배용 생분해 농업용 멀칭필름을 제조할 수 있다.The present invention can produce a biodegradable agricultural mulching film for direct cultivation of rice by blow molding the mulching film raw material mixture discharged from the inlet through one discharge port.
단계 3: 상기 블로우 성형물의 종단면을 절단하여 절단된 블로우 성형물을 필름 형태로 각각 펴지도록 지관에 감아 생분해 농업용 멀칭필름을 수득하는 단계Step 3: cutting the longitudinal section of the blow molded product to obtain a biodegradable agricultural mulching film by winding the cut blow molded product in the form of a film to each unfold.
본 단계 3은 상기 블로우 성형물의 종단면을 절단하여 절단된 블로우 성형물을 필름 형태로 각각 펴지도록 지관에 감아 생분해 농업용 멀칭필름을 수득하는 단계이다.This step 3 is a step of obtaining a biodegradable agricultural mulching film by cutting the longitudinal section of the blow molding to wind the cut blow molding in the form of film to each unfold.
상기 단계 2에서 생산된 블로우 성형물은 이어진 형태이기 때문에 멀칭필름으로 사용하기에는 어려움이 있다. 이에 본 발명은 서로 이어진 형태인 성형물의 종단면을 절단함으로써 블로우 성형물을 필름 형태로 각각 펴지도록 하여 운반과 보관에 용이하게 지관에 감는 것이다.The blow molded product produced in step 2 is difficult to use as a mulching film because it is a continuous form. Accordingly, the present invention is to cut the longitudinal cross-section of the moldings that are connected to each other to unfold the blow moldings in the form of a film to each easily wound around the paper pipe for transport and storage.
이렇게 만들어진 멀칭필름은 지방족폴리에스테르의 사용량 대비 부피가 증가되어 생산효율이 좋으면서 생산비용을 절감할 수 있고, 생분해성으로, 별도의 수거가 필요 없기 때문에 노동력을 절감할 수 있는 장점이 있다.The mulching film made in this way has an advantage of reducing labor costs because the volume of the aliphatic polyester is increased compared to the amount of use thereof, and thus the production efficiency is good, and the biodegradability does not require separate collection.
단계 4: 상기에서 수득된 생분해 농업용 멀칭필름에 다수의 구멍을 일정 간격으로 뚫은 후, 구멍 주변에 볍씨를 붙이는 단계Step 4: after drilling a plurality of holes in the biodegradable agricultural mulching film obtained at a predetermined interval, attaching rice seed around the hole
본 단계 4는 상기 단계 3에서 수득된 생분해 농업용 멀칭필름에 다수의 구멍을 일정 간격으로 뚫은 후, 구멍 주변에 볍씨를 붙이는 단계이다.This step 4 is a step of attaching rice seed around the hole after drilling a plurality of holes at a predetermined interval in the biodegradable agricultural mulching film obtained in step 3.
한편, 본 발명은 상기 단계 3에서 수득된 생분해 농업용 멀칭필름에 다수의 구멍을 일정 간격으로 뚫는데, 이는 구멍 주변에 붙여진 볍씨에서 발아된 유아가 멀칭필름 위로 뻗어나올 수 있게 하기 위해서이다.On the other hand, the present invention drills a plurality of holes in the biodegradable agricultural mulching film obtained in step 3 at regular intervals, so that the infant germinated from the rice seed attached around the hole can extend over the mulching film.
한편, 다수의 구멍은 바람직하게 조간 및 주간이 100~400mm 되도록 일정 간격으로 뚫는 것이 좋다.On the other hand, a plurality of holes is preferably drilled at regular intervals so that intertidal and daytime 100 ~ 400mm.
조간이란 작물이 심어진 폭을 의미하고, 주간이란 포기와 포기 사이(그루와 그루 사이)를 의미한다.The term "morning" means the width of the planted plant, and the weekly "between and between trees".
한편, 본 발명은 수득된 생분해 농업용 멀칭필름에 다수의 구멍을 일정 간격으로 뚫은 후, 구멍 주변에 볍씨를 붙이는 단계; 이후 바람직하게 추가적으로, 볍씨를 최아시키는 단계를 포함할 수 있다.On the other hand, the present invention after drilling a plurality of holes in a predetermined interval on the obtained biodegradable agricultural mulching film, attaching rice seed around the hole; Then preferably additionally, may include the step of minimizing rice seed.
한편, 수득된 생분해 농업용 멀칭필름에 뚫은 구멍은 바람직하게 일정간격을두고 서로 4방향으로 대칭되도록 형성된 것 또는 일정간격을 두고 서로 2방향으로대칭되도록 형성된 것 또는 직경 10mm~50mm인 것이 좋고, 멀칭필름 구멍 주변에 붙인 볍씨는 바람직하게 2~10개인 것이 좋다.On the other hand, the holes punched in the obtained biodegradable agricultural mulching film is preferably formed to be symmetrical to each other in four directions with a predetermined interval or formed to be symmetrical to each other in two directions with a certain interval or diameter 10mm ~ 50mm, Rice seed stuck around the hole is preferably 2-10.
한편, 본 발명의 볍씨 간의 붙이는 간격은 이앙재배의 단위 면적당의 포기수가 될 정도의 간격으로 붙인다.On the other hand, the spacing between the rice seeds of the present invention is pasted at intervals such as to give up water per unit area of rice planting.
또한 본 발명은 상기에 의해 제조된 벼의 직파재배용 생분해 농업용 멀칭필름을, 필름에 붙은 볍씨가 논 바닥과 맞닿도록 논 바닥에 치상하는 단계를 포함하는 것을 특징으로 하는 생분해 농업용 멀칭필름을 이용한 벼 직파재배방법을 제공한다.In another aspect, the present invention is a rice straight wave using a biodegradable mulching film for biodegradable agricultural mulching film comprising the step of arranging the biodegradable agricultural mulching film for direct cultivation of rice prepared by the above, so that the rice seed attached to the film abuts the bottom of the paddy field. Provide a cultivation method.
본 발명은 상기에서 제조된 벼의 직파재배용 생분해 농업용 멀칭필름을, 필름에 붙은 볍씨가 논 바닥과 맞닿도록 논 바닥에 치상하는데, 볍씨를 조류나 기타피해로부터 예방할 수 있으면서 보온을 유지할 수 있기 때문이다.The present invention is a biodegradable agricultural mulching film for direct cultivation of rice prepared in the above, the rice seed adhered to the film on the rice paddy bottom so as to contact the bottom of the rice paddy, because the rice seed can be kept warm while being able to prevent rice seed from algae or other damages. .
한편, 통상적으로 벼 재배방법은 볍씨를 정선 및 소독하여 침종하고 싹을 틔운 후, 어느 정도 모를 기른 다음, 모를 본 논으로 옮겨 심는데(이앙), 본 발명의벼 직파재배방법은 필름에 붙은 볍씨가 논 바닥과 맞닿도록 논 바닥에 치상함으로써 모기르기와 모를 본 논으로 옮겨 심는(이앙) 것을 생략할 수 있어 매우 간편하다. 또한, 벼의 직파재배용 생분해 농업용 멀칭필름은 별도로 수거를 하지 않아도자연적으로 생분해되기 때문에 환경오염을 방지하고 수거에 따른 노동력을 절감시킬 수 있으며, 잡초를 예방할 수 있어 제초제의 사용을 억제할 수 있다.On the other hand, the rice cultivation method is usually seeded and disinfected by seeding and disinfection of rice seedlings, after sprouting, after raising some seedlings, transfer the seedlings to the rice paddy (Iang), the rice direct cultivation method of the present invention is the rice seed attached to the film It is very easy to avoid mosquitoes and transplanting the seedlings to the rice paddies by placing them on the rice pads so that they touch the rice paddies. In addition, since the biodegradable agricultural mulching film for direct cultivation of rice is biodegradable even if not separately collected, it is possible to prevent environmental pollution and reduce labor due to collection, and to prevent weeds, thereby preventing the use of herbicides.
한편, 치상 할 때의 논 지면의 최상의 상태 유지를 위하여 경운과 로타리 작업을 한 후, 물을 대어 무논(물논) 상태로 한 다음, 평탄 작업 및 비료살포(완효성복비)을 하고 생분해 농업용 멀칭필름을 최대한 논 지면에 가까이 밀착 되도록 하여 치상하여야 하며, 물대기는 유아가 멀칭필름의 구멍 위로 올라올 때까지 건조되지 않도록만 유지하고 그 후에 물대기를 실시하는데, 치상 후 곧바로 물대기를 하였을 경우에는 출아율이 낮아지기 때문이다.On the other hand, after tilling and rotary work to maintain the best condition of the paper when it is healed, put water into a non-non-water (non-water) state, and then flattening and fertilizer spraying (perfecting coverage) and applying biodegradable mulching film for agriculture. As close as possible to the paddy field, it should be flossed, and the water pool should be kept dry until the baby climbs over the hole in the mulching film. After that, the water will be drained. Because it is lowered.
이하, 본 발명의 내용에 대해 하기 실시예에서 더욱 상세히 설명하지만, 본발명의 권리범위가 하기 실시예에만 한정되는 것은 아니고, 이와 등가의 기술적 사상의 변형까지를 포함한다.Hereinafter, the content of the present invention will be described in more detail in the following examples, but the scope of the present invention is not limited to the following examples, and includes modifications of equivalent technical ideas.
실시예 1: 벼의 직파재배용 생분해 농업용 멀칭필름 제조Example 1 Biodegradable Agricultural Mulching Film for Rice Cultivation
지방족폴리에스테르인 PBAT(Poly(butyrate adipate terephth)) 재질로 구성된 분말 또는 펠렛 형태의 원료 60 중량%와 스테아린산으로 캡슐화된 탄산칼슘 40중량%를 혼합하여 멀칭필름 원료혼합물을 제조한 후, 제조된 멀칭필름 원료혼합물을 압출기의 투입부로 투입하였다. 투입부로부터 배출되는 멀칭필름 원료혼합물이하나의 토출구를 통해 블로우 성형된 후, 수득된 블로우 성형물의 종단면을 절단하여 절단된 블로우 성형물을 필름 형태로 각각 펴지도록 지관에 감아 벼의 직파재배용 생분해 농업용 멀칭필름(실시예 1)을 제조하였다.After mulching film raw material mixture was prepared by mixing 60% by weight of the raw material in the form of powder or pellets composed of PBAT (Poly (butyrate adipate terephth)), an aliphatic polyester, and 40% by weight of calcium carbonate encapsulated with stearic acid. The film raw material mixture was put into the input part of an extruder. After the mulching film raw material mixture discharged from the input part is blow-molded through one discharge port, the longitudinal section of the obtained blow molding is cut and wound around the branch pipe to unfold the cut blow molding into a film form. A film (Example 1) was prepared.
비교예 1: 탄산칼슘을 사용하지 않은 벼의 직파재배용 생분해 농업용 멀칭필름 제조Comparative Example 1 Preparation of Biodegradable Agricultural Mulching Film for Direct Cultivation of Rice without Calcium Carbonate
상기 실시예 1에서 제조된 벼의 직파재배용 생분해 농업용 멀칭필름과 동일한 원료, 원료중량, 제조방법으로 멀칭필름을 제조하되, 스테아린산으로 캡슐화된탄산칼슘을 사용하지 않고 벼의 직파재배용 생분해 농업용 멀칭필름(비교예 1)을 제조하였다.Bio-degradable agricultural mulching film for direct cultivation of rice without using calcium carbonate encapsulated with stearic acid, but preparing a mulching film with the same raw material, raw material weight, manufacturing method as the biodegradable agricultural mulching film for direct growing of rice prepared in Example 1 Comparative Example 1) was prepared.
실험예 1: 생분해성 측정Experimental Example 1: Determination of biodegradability
상기 실시예 1에서 제조된 벼의 직파재배용 생분해 농업용 멀칭필름의 생분해성을 측정하였다.The biodegradability of the biodegradable agricultural mulching film for direct cultivation of rice prepared in Example 1 was measured.
생분해성 시험을 위하여 기본배지로 Na2HPO47H2O 12.8g, KH2PO4 3.0g, NaCl 0.5g, NH4Cl 1.0g을 증류수에 녹여 1 리터로 맞춘 후 121℃에서 15분간 멸균하여 배지를 제조하였다. 이때 유일한 탄소원으로서는 200㎛ 두께의 실시예 1을 0.5×0.5cm로 절단하여 70% 알콜로 따로 소독하여 2%(w/v)의 양으로 첨가하였다. 상기와같이 준비한 배지 30ml을 100ml 삼각플라스크에 넣고 토양미생물을 100㎕ 접종하였다. 토양미생물은 노지의 토양표면을 긁어서 이 중에서 1g을 10ml 멸균증류수에 현탁하여 10분간 방치한 후 위의 맑은 물 부분을 취하여 사용하였다. 상기의 방법으로 균체를 접종하여 30℃에서 150rpm의 속도로 교반하면서 8주간 균체를 배양하면서 8주 후에 실시예 1을 수집하여 배양 전의 실시예 1과 배양 후의 실시예 1을 주사형 탐침현미경(SPM: Scanning Probe Microscopy)으로 비교 관찰하였다. 현미경의배율은 약 50,000배로 조정하여 촬영하였다.For biodegradability test, 12.8 g of Na2HPO47H2O, 3.0 g of KH2PO4, 0.5 g of NaCl, and 1.0 g of NH4Cl were dissolved in distilled water to 1 liter, followed by sterilization at 121 ° C. for 15 minutes to prepare a medium. In this case, as the only carbon source, Example 1 having a thickness of 200 μm was cut into 0.5 × 0.5 cm, and sterilized separately with 70% alcohol and added in an amount of 2% (w / v). 30 ml of the medium prepared as described above was placed in a 100 ml Erlenmeyer flask, and 100 µl of the soil microorganism was inoculated. Soil microorganism was used to scrape the surface of the soil, suspended 1g of this in 10ml sterile distilled water, left for 10 minutes, and took the clear water part of the above. Inoculating the cells by the above method and incubating the cells for 8 weeks while stirring at 30 rpm at a speed of 150 rpm, Example 1 was collected after 8 weeks, and Example 1 before the cultivation and Example 1 after the cultivation with a scanning probe microscope (SPM). : Scanning probe microscopy) was observed. The magnification of the microscope was adjusted to about 50,000 times.
시험결과 8주 후에 토양미생물이 성장했음을 관찰할 수 있었고 상기 균은 3종의 세균과 2종의 곰팡이로 확인되었다.As a result of the test, soil microorganisms were grown after 8 weeks, and the bacteria were identified as three bacteria and two fungi.
또한 주사형 탐침현미경으로 50,000배로 관찰했을 때 배양 전의 실시예 1은표면이 깨끗하였으나 8주 후의 실시예 1은 토양미생물에 의하여 생분해되어 구멍이많이 나 있음을 관찰할 수 있었다.In addition, when observed at 50,000 times with a scanning probe microscope, Example 1 before the cultivation, the surface was clean, but Example 1 after 8 weeks was found to be biodegraded by soil microorganisms with a lot of holes.
실험예 2: 생산된 부피 측정Experimental Example 2: Production of volume measurement
상기 실시예 1 및 비교예 1에서 제조된 벼의 직파재배용 생분해 농업용 멀칭필름의 부피비를 측정하였다.The volume ratio of the biodegradable agricultural mulching film for direct cultivation of rice prepared in Example 1 and Comparative Example 1 was measured.
실시예 1의 방법으로 생산된 멀칭필름과 비교예 1의 방법으로 생산된 벼의 직파재배용 생분해 농업용 멀칭필름의 부피를 측정한 결과, 실시예 1은 비중이 약 1.1이었으며 비교 예 1은 비중이 1.26이었다. 그러므로 실시예 1이 비교예 1보다 약 15% 정도 부피가 증가한 것을 확인할 수 있으므로 재료비를 절감할 수 있었다.As a result of measuring the volume of the mulching film produced by the method of Example 1 and the biodegradable agricultural mulching film for direct growing of rice produced by the method of Comparative Example 1, Example 1 had a specific gravity of about 1.1 and Comparative Example 1 had a specific gravity of 1.26. It was. Therefore, Example 1 was confirmed that the volume increased by about 15% than Comparative Example 1 was able to reduce the material cost.
실시예 3: 벼의 직파재배Example 3: Straight Cultivation of Rice
상기 실시예 1에서 제조된 벼의 직파재배용 생분해 농업용 멀칭필름을 필름에 붙은 볍씨가 논 바닥과 맞닿도록 논 바닥에 치상하였다.The biodegradable agricultural mulching film for direct cultivation of rice prepared in Example 1 was toothed on the bottom of the paddy so that the rice seed attached to the film abuts the bottom of the paddy field.

Claims (14)

  1. (A) 지방족폴리에스테르 재질로 구성된 분말 또는 펠렛 형태의 원료에 스테아린산으로 캡슐화된 탄산칼슘을 혼합하여 멀칭필름 원료혼합물을 제조한 후, 제조된 멀칭필름 원료혼합물을 압출기의 투입부로 투입하는 단계;(A) preparing a mulching film raw material mixture by mixing calcium carbonate encapsulated with stearic acid to a raw material in the form of powder or pellets composed of an aliphatic polyester material, and then introducing the prepared mulching film raw material mixture into an input unit of an extruder;
    (B) 상기 투입부로부터 배출되는 멀칭필름 원료혼합물이 하나의 토출구를 통해 블로우 성형되는 단계;(B) blow molding the mulching film raw material mixture discharged from the input unit through one discharge port;
    (C) 상기 블로우 성형물의 종단면을 절단하여 절단된 블로우 성형물을 필름형태로 각각 펴지도록 지관에 감아 생분해 농업용 멀칭필름을 수득하는 단계; 및(C) cutting the longitudinal section of the blow molded product to obtain a biodegradable agricultural mulching film by winding the cut blow molded product in the form of a film to be unfolded in a film form; And
    (D) 상기에서 수득된 생분해 농업용 멀칭필름에 다수의 구멍을 일정 간격으로 뚫은 후, 구멍 주변에 볍씨를 붙이는 단계를 포함하는 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.(D) a method for producing a biodegradable agricultural mulching film for direct cultivation of rice, characterized in that it comprises a step of attaching rice seed around the hole after drilling a plurality of holes in the biodegradable agricultural mulching film obtained above.
  2. 제1항에 있어서, 상기 지방족폴리에스테르는 PBS(Poly(butylene succinate)), PAS(Poly(butylene adipate)), PGA(Poly(glycolicacid)), PLA(Poly(lactic acid)), PCL(Poly(ε-caprolatome)), PHV(Poly(hydroxyvalerate)), PBSA(Poly(butylene succinate adipate))), PGLA(Poly(glycolic acid-co-latic acid)), PHBV(Poly(hydroxy butyrate valerate)) 및 PBAT(Poly(butylrate adipate terephthalate)) 중 선택되는 어느 하나 이상인 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.According to claim 1, wherein the aliphatic polyester is PBS (Poly (butylene succinate)), PAS (Poly (butylene adipate)), PGA (Poly (glycolic acid)), PLA (Poly (lactic acid)), PCL (Poly ( ε-caprolatome)), Poly (hydroxyvalerate) (PHV), Poly (butylene succinate adipate) (PBSA), Poly (glycolic acid-co-latic acid) (PGLA), Poly (hydroxy butyrate valerate (PHBV), and PBAT (Poly (butylrate adipate terephthalate)) A method for producing a biodegradable agricultural mulching film for direct growing of rice, characterized in that at least one selected from.
  3. 제1항에 있어서, 상기 스테아린산으로 캡슐화된 탄산칼슘은 0.01~1㎛인 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, wherein the calcium carbonate encapsulated with stearic acid is 0.01 ~ 1㎛ the manufacturing method of the biodegradable agricultural mulching film for rice cultivation.
  4. 제1항에 있어서, 상기 멀칭필름 원료혼합물은 셀룰로오스 또는 전분을 추가적으로 함유하는 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, wherein the mulching film raw material mixture further comprises cellulose or starch.
  5. 제1항에 있어서, 상기 멀칭필름 원료혼합물은 스테아린산으로 캡슐화된 탄산칼슘이 지방족폴리에스테르 재질로 구성된 분말 또는 펠렛 형태의 원료를 5 - 45 중량% 대체하여 조성되는 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, wherein the mulching film raw material mixture is calcium carbonate encapsulated with stearic acid biodegradation for the cultivation of rice, characterized in that the composition is replaced by 5 to 45% by weight of the raw material in the form of powder or pellets composed of aliphatic polyester material Method of manufacturing mulching film for agriculture.
  6. 제4항에 있어서, 상기 셀룰로오스 또는 전분은 멀칭필름 원료혼합물을 0.5 -5 중량% 대체하여 첨가되는 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 4, wherein the cellulose or starch is added to replace the mulching film raw material mixture by 0.5 -5% by weight.
  7. 제4항에 있어서, 셀룰로오스 또는 전분은 20㎛~40㎛인 것을 특징으로 하는 의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 4, wherein the cellulose or starch is 20 μm to 40 μm.
  8. 제1항에 있어서, 다수의 구멍은 조간 및 주간이 100~400mm 되도록 일정 간격으로 뚫는 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, wherein a plurality of holes are drilled at regular intervals so that intertidal and daytime are 100 to 400 mm.
  9. 제1항에 있어서, 상기 (D)단계 이후 볍씨를 최아시키는 단계를 더 포함하는 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, further comprising: minimizing rice seed after the step (D).
  10. 제1항에 있어서, 상기 일정 간격으로 뚫린 다수의 구멍은 서로 4방향으로 대칭되도록 형성된 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, wherein the plurality of holes drilled at regular intervals are formed to be symmetrical to each other in four directions.
  11. 제1항에 있어서, 상기 일정 간격으로 뚫린 다수의 구멍은 서로 2방향으로 대칭되도록 형성된 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, wherein the plurality of holes drilled at regular intervals are formed to be symmetrical to each other in two directions.
  12. 제1항에 있어서, 상기 일정 간격으로 뚫린 다수의 구멍은 직경 10mm~50mm인 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, wherein the plurality of holes drilled at regular intervals have a diameter of 10 mm to 50 mm.
  13. 제1항에 있어서, 상기 멀칭 필름 구멍 주변에 붙인 볍씨는 2~10개인 것을 특징으로 하는 벼의 직파재배용 생분해 농업용 멀칭필름의 제조방법.The method of claim 1, wherein the rice seed attached to the periphery of the mulching film hole is 2 to 10, characterized in that the manufacturing method of the biodegradable agricultural mulching film for direct growing of rice.
  14. 제1항 내지 제13항 중 어느 한 항에 청구된 방법에 의해 제조된 벼의 직파재배용 생분해 농업용 멀칭필름을 필름에 붙은 볍씨가 논 바닥과 맞닿도록 논 바닥에 치상하는 단계를 포함하는 것을 특징으로 하는 생분해 농업용 멀칭필름을 이용한 벼 직파재배방법.Claims 1 to 13, characterized in that it comprises the step of flocculating the biodegradable agricultural mulching film for direct growing of rice produced by the method according to any one of claims 1 to 13 so that the rice seed attached to the film is in contact with the bottom of the paddy field. Direct rice cultivation method using a biodegradable mulching film.
PCT/KR2010/000032 2009-09-21 2010-01-05 Method for manufacturing a biodegradable agricultural mulching film for directly seeding rice, and method for directly seeding rice using the biodegradable agricultural mulching film manufactured by the method WO2011034262A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107567764A (en) * 2017-09-19 2018-01-12 盐城市粮油作物技术指导站 A kind of mulch film and its application method with softgel shell
CN109181252A (en) * 2018-08-09 2019-01-11 合肥必更赢科技有限公司 A kind of degradable agricultural film preparation method for cane planting
CN116239874A (en) * 2023-02-24 2023-06-09 大禾科技发展(南京)有限公司 A special hydrophobic biodegradable agricultural mulch film for rice and its preparation method and application
CN116411479A (en) * 2022-09-26 2023-07-11 江苏省农业科学院 Method for preparing seedling-free tray rice seedling-raising straw matrix tray to prevent root system from penetrating degradable film

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KR100490791B1 (en) * 2003-02-07 2005-05-19 에스케이케미칼주식회사 Degradable mulching film coated water-absorbent material
KR100603073B1 (en) * 2003-10-20 2006-07-20 에스케이케미칼주식회사 Agricultural mulching paper and its manufacturing method
KR100903886B1 (en) * 2008-12-16 2009-06-24 이상한 Biodegradable agricultural mulching film using polylactic acid and its manufacturing method

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US20050072046A1 (en) * 2001-04-13 2005-04-07 Woon-Ho Yang Biodegradable mulching-mat for preventing weeds and method for manufacturing the mat
KR100490791B1 (en) * 2003-02-07 2005-05-19 에스케이케미칼주식회사 Degradable mulching film coated water-absorbent material
KR100603073B1 (en) * 2003-10-20 2006-07-20 에스케이케미칼주식회사 Agricultural mulching paper and its manufacturing method
KR100903886B1 (en) * 2008-12-16 2009-06-24 이상한 Biodegradable agricultural mulching film using polylactic acid and its manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107567764A (en) * 2017-09-19 2018-01-12 盐城市粮油作物技术指导站 A kind of mulch film and its application method with softgel shell
CN109181252A (en) * 2018-08-09 2019-01-11 合肥必更赢科技有限公司 A kind of degradable agricultural film preparation method for cane planting
CN109181252B (en) * 2018-08-09 2020-06-12 山东隆昌塑业有限公司 Preparation method of degradable agricultural mulching film for sugarcane planting
CN116411479A (en) * 2022-09-26 2023-07-11 江苏省农业科学院 Method for preparing seedling-free tray rice seedling-raising straw matrix tray to prevent root system from penetrating degradable film
CN116239874A (en) * 2023-02-24 2023-06-09 大禾科技发展(南京)有限公司 A special hydrophobic biodegradable agricultural mulch film for rice and its preparation method and application
CN116239874B (en) * 2023-02-24 2024-01-23 大禾科技发展(南京)有限公司 Special hydrophobic biodegradable agricultural mulching film for rice as well as preparation method and application thereof

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