CN102660072B - Special weather-proof perforated mulching film for full-film covering and double-ridge furrow sowing - Google Patents
Special weather-proof perforated mulching film for full-film covering and double-ridge furrow sowing Download PDFInfo
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Abstract
The invention relates to a special weather-proof perforated mulching film for full-film covering and double-ridge furrow sowing, which is manufactured by the following raw materials according to weight percent: 60 to 80 percent of Linear low-density polyethylene (LLDPE), 5 to 15 percent of low-density polyethylene (LDPE), 4 to 8 percent of high-density polyethylene (HDPE), 7 to 15 percent of metallocene polyethylene (mPE) and 3 to 6 percent of aging-proof mother stock; and the production process of the perforated mulching film comprises the following steps of: mixing the aging-proof mother stock, the LLDPE, the LDPE, the HDPE and the mPE according to a proportion, plasticizing, extruding, blowing up, drawing, cooling, tightening, spreading, perforating, slitting, rolling, checking and packaging so as to obtain the special weather-proof perforated mulching film for the full-film covering and the double-ridge furrow sowing. According to the special weather-proof perforated mulching filmfor the full-film covering and the double-ridge furrow sowing, the requirement of a weather-proof mulching film that one film is used for two years is met. The service life of the special weather-proof perforated mulching film for the full-film covering and the double-ridge furrow sowing reaches 12 to 18 months. Compared with a common mulching film in covering cultivation, the increase of the yield is as high as 30 to 40 percent. Moreover, the operation of planting is directly carried out according to holes by a user after a film is laid. The time and the labor are saved, and the production cost is lowered. The special weather-proof perforated mulching film for the full-film covering and the double-ridge furrow sowing is a novel product which is beneficial to agricultural tillage.
Description
Technical field
The present invention relates to a kind of agricultural ground coating film, relate in particular to a kind of two furrows of full film covering that are applicable to and broadcast the dedicated weather-proof punching mulch film of technology.
Background technology
Plastics film is an epoch-making progress of human use's sun power in application in agriculture, has made huge contribution for China realizes "Feeding and Clothing Project" and " vegetable basket project ", has become the indispensable production means in two-supremes one is excellent.According to the statistics made by the departments concerned, China's mulch film annual consumption is more than 1,250,000 tons, and the culture underglass area reaches more than 3.5 hundred million mu, and the area of film mulching and planting reaches 700,000,000 mu aptly, and usage quantity increases year by year.But along with a large amount of uses of low and middle-grade plastic films, more and more thinner usage trend has appearred in the ground film thickness, the area that has even the thickness that reaches 0.004mm, and this mulch film has only about 50 days work-ing life, is difficult to reclaim fully after wearing out.The agricultural ground of GB GB13735-92 blow moulded polyethyene coating film I class 0.012mm and above thickness add weather resisting agent and recommend duration of service only 120 days (4 months), and III class 0.008mm thickness adds weather resisting agent and recommends only 80 days duration of service.According to relevant department's measuring and calculating, some useless mulch film residual amount in soil in membrane covering plantation area is 6-7%, and indivedual areas are up to 13-14%.Because the prolongation of duration of service is accumulated over a long period, and causes soil compaction, crop root mineral element ion migration is obstructed, and has progressively formed serious large-area " white pollution ".Along with further going deep into of west development policy, conceding the land to forestry is carried out in more western provinces and policies such as construction land are examined in strictness, and arable area is reduced year by year.And grain solves the ever-increasing actual needs of population as main strategic material and people's livelihood primary demand with limited soil, has become a long-range strategic task of China's agricultural sustainable development.Therefore drought-relief, the effect of increasing income day owing to the agripast mulch film shows important.But the pollution of its formation is incompatible again with the principles and policies of the central Sustainable development of advocating, energy-saving and emission-reduction, harmonious development.
Summary of the invention
For solving the problems of the prior art, the invention provides the two furrows of a kind of full film covering and broadcast dedicated weather-proof punching mulch film, can reach 12-18 month its work-ing life, can reduce mulch film investment, reduction agriculture production cost thus.Guarantee the whole growth of nurse crop, growth, ripening stage collection rain soil moisture conservation, insulation, effectively suppress weeds in field, alleviate the functional effect of the saline and alkaline harm of soil.And after plastic film mulch, directly plant by the hole, time saving and energy saving, reduce production costs.
For this reason, take following technical scheme:
A kind of full film covers two furrows and broadcasts dedicated weather-proof punching mulch film, is to be made by following raw materials by weight percent: LLDPE 60%-80%, LDPE 5%-15%, HDPE4%-8%, mPE 7%-15%, ageing-resistant masterbatch 3%-6%; Described ageing-resistant masterbatch is to be made by following raw materials by weight percent: LLDPE powder 35%-45%, LDPE 25%-35%, HDPE 6%-15%, mPE 5%-12%, hindered amine as light stabilizer 2%-7%, antioxidant 0.5%-3.5%, UV light absorber 0.5%-3.5%, dispersion agent white oil 1.5%-5.0%; The production technique of described punching mulch film is: the preparation of described ageing-resistant masterbatch: each component of described ageing-resistant masterbatch is extruded tie rod → oven dry → pelletizing by the even high-speed stirring kneading → plasticizing of its proportioning get ageing-resistant masterbatch; Afterwards ageing-resistant masterbatch and described LLDPE, LDPE, HDPE, the mPE with gained be mixed in proportion → plastify → extrude → inflation → drawing-off → cooling → tensioning → sprawl → drilling → cut → rolling → check → packing namely gets described full film and covers two furrows and broadcast dedicated weather-proof punching mulch film.
Further, described LLDPE is that both of 2.0-3.0 and 1.0-2.0 are with the ratio proportioning of 3-2.2:1 for melt flow rate (MFR) g/10min.
Main physical properties test-results of the present invention sees Table 1 and table 2, wherein gets the product of different batches respectively as test objective 1#, 2#, 3#, 4#.
Table 1: initial physical mechanical property
As known from Table 1, physical and mechanical properties of the present invention all meets GB GB13735-92 III class premium grads rank, and the quality index tool is good.
Table 2: different time physical and mechanical properties and retention rate are used in the land for growing field crops:
As known from Table 2: with the big Tanaka continuity of duration of service, various physical and mechanical propertiess and retention rate linearly descend basically.Cover-seeding of the present invention can be divided into overlay film in autumn, top and insult overlay film, spring overlay film three classes.Autumn, to insult overlay film be in October and February next year then overlay film and top.Basic procedure is: full width ridging overlay film; Overlay film when mulch film and ground are close to, is beaten the infiltration hole about one week in the middle of two furrows, utilize autumn and winter snow and rain water-harvesting to infiltrate, fully soil moisture conservation.The function of mulch film mainly shows, the main soil moisture conservation insulation effect that rises, and through winter and spring moisture infiltrate soil by the artificial space in the middle of two ridges.This stage physical and mechanical properties retention rate is basically all more than 85%.April begins dibbling, emerges.Through hot summer and autumn, when using 12 months, physical and mechanical properties and retention rate suppression ratio are more serious, remain between the 60-75%.Crop harvesting is protected overlay film later on meticulously, will not take off film and remove, and passes through the winter of next year again, and when using 15 months, physical and mechanical properties and retention rate suppression ratio are less, remain between the 50-60%.When dibbling in the 3rd year, fertilising, when emerging, even when reaching 18 months with the time, physical and mechanical properties and retention rate suppression ratio are bigger, and be substantially between 30-40%, aging and beginning is damaged.
Obviously, the present invention can satisfy the requirement in work-ing life of weathering resistance mulch film " film 2 years with ", reaches 12-18 month; Cover the technical requirements that two furrow sowings are planted according to full film, the online hole of doing in the weather-resistance film much production process of 1200mm width, it is the regular hole that meets agriculture requirement on the big micro-ridge after the plastic film mulch, the user directly plants by the hole after plastic film mulch, time saving and energy saving, reducing production costs, is a kind of New Product that is conducive to agricultural tillage.And the punching rule, there is not breakage, the physical and mechanical properties of film is far above national standard, and is unlikely aging or damaged in advance from the hole.
The present invention is applicable to that arid, the full film of semiarid zone drought-resistant agriculture cover and suppressed moisture evaporation, and increase ground temperature, insulation soil moisture conservation effect are showing;
The present invention reduces agriculture production cost, increases soil fertility, and the effect of increasing income is showing, and the volume increase of comparable common ground film culture underglass is up to 30-40%, has realized agriculturely stablizing, having guaranteed grain-supply, make overall plans scientific development.
The present invention can be applicable to the culture underglass of corn, potato, sunflower, pumpkin, watermelon etc.Have and reduce and prevention and elimination of disease and pests, reduce the advantage of the usage quantity of agricultural chemicals.
The easy recovery improved the ecological environment after the present invention used, and reduced " white pollution ", and people-oriented, promoted the harmonious development of people and ecology; Promote the agriculture, rural areas and farmers scientific development.
Embodiment
Embodiment 1, a kind of full film covers two furrows and broadcasts dedicated weather-proof punching mulch film, be to be made by following raw materials by weight percent: LLDPE 70%, wherein melt flow rate (MFR) g/10min is the LLDPE 50% of 2.0-3.0, melt flow rate (MFR) g/10min is the LLDPE 20% of 1.0-2.0, and LDPE 10%, and HDPE 6%, mPE 10%, ageing-resistant masterbatch 4%.
Embodiment 2, a kind of full film covers two furrows and broadcasts dedicated weather-proof punching mulch film, be to be made by following raw materials by weight percent: LLDPE 60%, wherein melt flow rate (MFR) g/10min is the LLDPE 45% of 2.0-3.0, melt flow rate (MFR) g/10min is the LLDPE 15% of 1.0-2.0, and LDPE 15%, and HDPE 4%, mPE 15%, ageing-resistant masterbatch 6%.
Embodiment 3, a kind of full film covers two furrows and broadcasts dedicated weather-proof punching mulch film, be to be made by following raw materials by weight percent: LLDPE 65%, wherein melt flow rate (MFR) g/10min is the LLDPE 47% of 2.0-3.0, melt flow rate (MFR) g/10min is the LLDPE 18% of 1.0-2.0, and LDPE 12%, and HDPE 8%, mPE 12%, ageing-resistant masterbatch 3%.
Embodiment 4, a kind of full film covers two furrows and broadcasts dedicated weather-proof punching mulch film, be to be made by following raw materials by weight percent: LLDPE 74%, wherein melt flow rate (MFR) g/10min is the LLDPE 52% of 2.0-3.0, melt flow rate (MFR) g/10min is the LLDPE 22% of 1.0-2.0, and LDPE 7%, and HDPE 7%, mPE 7%, ageing-resistant masterbatch 5%.
Embodiment 5, a kind of full film covers two furrows and broadcasts dedicated weather-proof punching mulch film, be to be made by following raw materials by weight percent: LLDPE 80%, wherein melt flow rate (MFR) g/10min is the LLDPE 55% of 2.0-3.0, melt flow rate (MFR) g/10min is the LLDPE 25% of 1.0-2.0, and LDPE 5%, and HDPE 5%, mPE 7%, ageing-resistant masterbatch 3%.
All raw materials described in above-described embodiment 1-5 all can be buied from disclosed market, adopt among the described embodiment:
The melt flow rate (MFR) g/10min of LLDPE particle is 2.0-3.0, as: 7042,7042N etc.;
The melt flow rate (MFR) g/10min of LLDPE particle is 1.0-2.0, the 0218D that produces as Canada etc.;
The melt flow rate (MFR) g/10min of LDPE is 1.0-2.2, as: 2426H etc.;
The melt flow rate (MFR) g/10min of HDPE is 0.8-1.5, as: 5000S etc.;
The melt flow rate (MFR) g/10min of mPE is 0.7-2.0, by Exxon Mobil produce 342 etc.;
The proportioning 1 of the ageing-resistant masterbatch described in the embodiment 1-5: be to be made by following raw materials by weight percent: LLDPE powder 40%, LDPE 30%, and HDPE 10%, mPE 8%, hindered amine as light stabilizer 5%, antioxidant 2%, UV light absorber 2%, dispersion agent white oil 3%.
The proportioning 2 of the ageing-resistant masterbatch described in the embodiment 1-5: be to be made by following raw materials by weight percent: LLDPE powder 35%, LDPE 35%, and HDPE 15%, mPE 5%, hindered amine as light stabilizer 7%, antioxidant 0.5%, UV light absorber 1%, dispersion agent white oil 1.5%.
The proportioning 3 of the ageing-resistant masterbatch described in the embodiment 1-5: be to be made by following raw materials by weight percent: LLDPE powder 37%, LDPE 32%, and HDPE 12%, mPE 7%, hindered amine as light stabilizer 3%, antioxidant 3%, UV light absorber 3.5%, dispersion agent white oil 2.5%.
The proportioning 4 of the described ageing-resistant masterbatch of embodiment 1-5: be to be made by following raw materials by weight percent: LLDPE powder 42%, LDPE 27%, and HDPE 8%, mPE 12%, hindered amine as light stabilizer 2%, antioxidant 1%, UV light absorber 3%, dispersion agent white oil 5.0%.
The proportioning 5 of the described ageing-resistant masterbatch of embodiment 1-5: be to be made by following raw materials by weight percent: LLDPE powder 45%, LDPE 25%, and HDPE 6%, mPE 10%, hindered amine as light stabilizer 6%, antioxidant 3.5%, UV light absorber 0.5%, dispersion agent white oil 4.0%.
All raw materials described in the above-mentioned ageing-resistant masterbatch proportioning 1-5 all can be buied from disclosed market, mainly adopt in its proportioning:
The melt flow rate (MFR) g/10min of LLDPE powder is 2.0-3.0, as: DGM1820 etc.;
The melt flow rate (MFR) g/10min of LDPE is 2.0-2.5;
The melt flow rate (MFR) g/10min of HDPE is 1.5-3.0;
The melt flow rate (MFR) g/10min of mPE is 1.5-3.0;
The preparation method of the various embodiments described above is that the technical process of blown film production is:
The preparation of described ageing-resistant masterbatch: each component of described ageing-resistant masterbatch is extruded tie rod → oven dry → pelletizing by the even high-speed stirring kneading → plasticizing of its proportioning get ageing-resistant masterbatch; Afterwards ageing-resistant masterbatch and described LLDPE, LDPE, HDPE, the mPE with gained be mixed in proportion → plastify → extrude → inflation → drawing-off → cooling → tensioning → sprawl → drilling → cut → rolling → check → packing namely gets described full film and covers two furrows and broadcast dedicated weather-proof punching mulch film.
The main technologic parameters of described blown film production sees Table 3.
Products obtained therefrom specification: 1200 * (0.008 ± 0.001) mm
10 ± 0.15kg/ volume
Table 3: the main technologic parameters that blown film is produced
Claims (6)
1. a full film covers two furrows and broadcasts dedicated weather-proof punching mulch film, it is characterized in that being made by following raw materials by weight percent: LLDPE 60%-80%, LDPE 5%-15%, HDPE4%-8%, mPE 7%-15%, ageing-resistant masterbatch 3%-6%; Described ageing-resistant masterbatch is to be made by following raw materials by weight percent: LLDPE powder 35%-45%, LDPE 25%-35%, HDPE 6%-15%, mPE 5%-12%, hindered amine as light stabilizer 2%-7%, antioxidant 0.5%-3.5%, UV light absorber 0.5%-3.5%, dispersion agent white oil 1.5%-5.0%; The production technique of described punching mulch film is: the preparation of described ageing-resistant masterbatch: each component of described ageing-resistant masterbatch is extruded tie rod → oven dry → pelletizing by the even high-speed stirring kneading → plasticizing of its proportioning get ageing-resistant masterbatch; Afterwards ageing-resistant masterbatch and described LLDPE, LDPE, HDPE, the mPE with gained be mixed in proportion → plastify → extrude → inflation → drawing-off → cooling → tensioning → sprawl → drilling → cut → rolling → check → packing namely gets described full film and covers two furrows and broadcast dedicated weather-proof punching mulch film.
2. a kind of full film according to claim 1 covers two furrows and broadcasts dedicated weather-proof punching mulch film, it is characterized in that being made by following raw materials by weight percent: LLDPE 65%-74%, LDPE 7%-12%, HDPE 5%-7%, mPE 7%-12%, ageing-resistant masterbatch 3%-5%.
3. a kind of full film according to claim 1 covers two furrows and broadcasts dedicated weather-proof punching mulch film, and it is characterized in that being made by following raw materials by weight percent: LLDPE 70%, and LDPE 10%, and HDPE 6%, and mPE 10%, ageing-resistant masterbatch 4%.
4. cover two furrows according to each described a kind of full film among the claim 1-3 and broadcast dedicated weather-proof punching mulch film, it is characterized in that described LLDPE is that both of 2.0-3.0 and 1.0-2.0 are with the ratio proportioning of 3-2.2:1 for melt flow rate (MFR) g/10min.
5. a kind of full film according to claim 1 covers two furrows and broadcasts dedicated weather-proof punching mulch film, it is characterized in that described ageing-resistant masterbatch is to be made by following raw materials by weight percent: LLDPE powder 37%-42%, LDPE 27%-32%, HDPE 8%-12%, mPE 7%-10%, hindered amine as light stabilizer 3%-6%, antioxidant 1%-3%, UV light absorber 1%-3%, dispersion agent white oil 2.5%-4.0%.
6. a kind of full film according to claim 1 covers two furrows and broadcasts dedicated weather-proof punching mulch film, it is characterized in that described ageing-resistant masterbatch is to be made by following raw materials by weight percent: LLDPE powder 40%, LDPE 30%, HDPE 10%, mPE 8%, hindered amine as light stabilizer 5%, antioxidant 2%, UV light absorber 2%, dispersion agent white oil 3%.
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| CN106234087A (en) * | 2016-07-21 | 2016-12-21 | 兰州金土地塑料制品有限公司 | Environment-friendly type Reusability agricultural mulch films |
| CN108912468B (en) * | 2018-05-29 | 2021-03-19 | 厦门协四方工贸有限公司 | Anti-aging bubble film and forming process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056696A (en) * | 1990-03-23 | 1991-12-04 | 中国科学院长春应用化学研究所 | Weather-resistant polyethylene film |
| CN1502654A (en) * | 2002-11-26 | 2004-06-09 | 新疆天业（集团）有限公司 | Nano material modified polythene ground covering film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056696A (en) * | 1990-03-23 | 1991-12-04 | 中国科学院长春应用化学研究所 | Weather-resistant polyethylene film |
| CN1502654A (en) * | 2002-11-26 | 2004-06-09 | 新疆天业（集团）有限公司 | Nano material modified polythene ground covering film |
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Address after: The lotus Pavilion Road 741000 Gansu province Tianshui District No. 47 Patentee after: Gansu Tianbao Plastic Co., Ltd. Address before: The lotus Pavilion Road 741000 Gansu province Tianshui District No. 47 Patentee before: Tianshui Tianbao Plastic Co.,Ltd. |