CN212279122U - Full-biodegradable composite mulching film - Google Patents
Full-biodegradable composite mulching film Download PDFInfo
- Publication number
- CN212279122U CN212279122U CN202020095076.8U CN202020095076U CN212279122U CN 212279122 U CN212279122 U CN 212279122U CN 202020095076 U CN202020095076 U CN 202020095076U CN 212279122 U CN212279122 U CN 212279122U
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- plastic film
- full
- biodegradable
- film
- compound
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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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Abstract
The utility model discloses a compound plastic film of full biodegradable, the plastic film comprises the oxidation biodegradable plastic film strip in the middle of and the full biodegradable plastic film strip of both sides, every full biodegradable plastic film strip width is 5cm-20cm, oxidation biodegradable plastic film strip is "perpendicular violently erects" the compound overlap joint of type with the full biodegradable plastic film strip of both sides. The utility model discloses the compound plastic film of full biodegradable that claims adopts and extrudes blown film technology production, adopts the color matching membrane die head, and the inside overlap joint complex department structure of die head is "erect violently and erect" type for full biodegradable plastic film melt is compound at the junction overlap joint with oxidation biodegradable plastic film melt.
Description
Technical Field
The utility model belongs to agricultural plastic film field, concretely relates to compound plastic film of full biodegradable.
Background
The common polyethylene mulching films are continuously applied for many years, even ultra-thin mulching films are used in some areas, the mulching films are broken after being used and difficult to clean, a large amount of manpower is needed to be invested for holding the mulching films, even if the residual mulching films cannot be completely cleaned from soil, the accumulated amount of the residual mulching films in the soil is increased year by year, the pollution of farmland soil is caused, the residual mulching films can block farm work, the germination of crop seeds and the root growth of plants are influenced, the absorption and utilization of water and fertilizer by the crops are also influenced, the crop yield is finally reduced, and the sustainable development of agriculture is influenced. The popularization and the use of the degradable mulching film are an alternative means for solving the pollution of the agricultural soil mulching film. However, the fully biodegradable mulching film which is put on the market at the present stage has low mechanical strength and is easy to break when being paved by a machine; the water vapor transmission rate is high, the soil moisture preservation performance is poor, and the soil moisture preservation agent is not suitable for being used in arid areas; the degradation time is too early, and the functions of heat preservation, soil moisture preservation and the like are lost in advance, so that the yield of crops is reduced; the price of raw materials is high, and users are difficult to bear and the like.
The mechanical property, the heat preservation and soil moisture preservation performance, the service function period and the like of the oxidative biodegradation mulching film are similar to those of a common mulching film, and the use requirement of most crops can be met, but the oxidative biodegradation mulching film has the defect that the degradation of the soil covering part is slow, the exposed part and the soil covering part cannot be degraded at the same time, the soil covering part can be completely degraded within two to three years, and the residual of the mulching film in the soil can be caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a compound plastic film of full biodegradable, can solve current agricultural plastic film of full biodegradation mechanical strength low, the soil moisture conservation performance is poor, degradation phase is difficult to accurate control, problem with high costs and the problem that oxidative degradation plastic film earthing part and naked part can not degrade simultaneously.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a compound plastic film of full biodegradable, the plastic film comprises the oxidation biodegradable plastic film strip in the middle of and the full biodegradable plastic film strip of both sides, every full biodegradable plastic film strip width is 5cm-20cm, oxidation biodegradable plastic film strip is "the compound overlap joint of perpendicular horizontal" type with the full biodegradable plastic film strip of both sides.
Preferably: the two longitudinal structures are the same in width.
The beneficial effects of the utility model reside in that:
the utility model discloses the compound plastic film of full biodegradable that claims adopts and extrudes blown film technology production, adopts the color matching membrane die head, and the inside overlap joint complex department structure of die head is "erect violently and erect" type for full biodegradable plastic film melt is compound at the junction overlap joint with oxidation biodegradable plastic film melt.
The utility model discloses the effect that the plastic film can reach is that the joint fastness is high, and the farmland is used and is not ftractureed, uses back both sides earthing part and middle part to expose the part and realize degrading simultaneously.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1 full biodegradable film strip and 2 oxidation biodegradable film strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a compound plastic film of full biodegradable, the plastic film comprises oxidation biodegradable plastic film strip 2 in the middle and the full biodegradable plastic film strip 1 of both sides, every full biodegradable plastic film strip 1 width is 5cm-20cm, oxidation biodegradable plastic film strip 2 is "erects the compound overlap joint of" horizontal and vertical "type with the full biodegradable plastic film strip 1 of both sides.
The oxidative biodegradation film is a completely degradable environment-friendly plastic which is degraded biologically by microorganisms in soil after the molecular weight is reduced to a certain degree in the degradation process. The oxidation biodegradation plastic is prepared by adding degradation additive (oxidation biodegradation master batch) into high molecular materials (PE, PP and PS) to enable the plastic to generate oxidation reaction under the action of light or/and heat. After the molecular weight is reduced to a certain extent by the oxidation reaction, biodegradation may occur if microorganisms are present, and the final degradation products are water, carbon dioxide and humus.
The utility model provides an oxidation biodegradable plastic film can be the plastic film that utilizes the production of the oxidation biodegradable masterbatch of selling on the market, and production method is current conventional method, for example the oxidation biodegradable masterbatch of Australia OneCorp company production, the oxidation biodegradable masterbatch of Shandong Tianzhuang environmental protection science and technology limited company etc..
The full-biodegradable mulching film is a plastic film composed of substances capable of being completely decomposed by microorganisms, the substances are mainly derived from starch, cellulose, chitosan and other polysaccharide natural materials, and the final product of the degradation is C02、H20 and biomass can be completely absorbed by the nature, and secondary pollution to the environment can not be generated. The main varieties include polylactic acid (PLA), Polyhydroxybutyrate (PUB) and the like.
The fully biodegradable material used in the patent is PBAT, which is also a petroleum-based fully biodegradable material, and PBAT is also the best material for the fully biodegradable material used as a mulching film.
Although there is lapped alternate plastic film among the prior art, current alternate plastic film all is the sharp overlap joint, and the problem of plastic film fracture appears easily in sharp lapped mode, the utility model discloses a compound plastic film is through "erecting the compound overlap joint of" violently erecting "type, and the joint fastness is high, and the farmland is used not fracture, uses both sides earthing part and middle exposure part to realize degrading simultaneously after the use.
Preferably: the two longitudinal structures are the same in width.
The first experimental example: experiment the utility model discloses a firmness and the degradation condition of compound plastic film
Samples are respectively cut at the lap joint of the full-biodegradable mulch film strip, the lap joint compound part of the full-biodegradable mulch film strip and the oxidized biodegradable mulch film strip, and the oxidized biodegradable mulch film strip is longitudinally and transversely cut, a universal tensile testing machine is used for testing the mechanical property indexes of the film at all positions, and the experimental results are shown in the following table.
Mechanical performance index of full-biodegradable composite mulching film
The specification of the mulching film is as follows: 1250X 0.008mm
Experiment example two: the field experiment observes the utility model discloses a degradation condition of compound plastic film
Film spreading for 65 days: the strips of the oxidative biodegradation mulching film at the exposed part begin to have fisheye-shaped cracks, and the tearing force of the hands is reduced. And (3) completely covering soil on the fully biodegradable mulching film strips of the soil-buried part, and cleaning up the soil, so that small cracks begin to appear on the fully biodegradable mulching film strips of the soil-buried part, and the strength is reduced.
Laying the film for 105 days: the strip of the oxidative biodegradation mulching film at the exposed part enters a large cracking stage. And (3) completely covering soil on the fully biodegradable mulching film strips of the soil-burying part, and then cleaning up the fully biodegradable mulching film strips of the soil-burying part, wherein the fully biodegradable mulching film strips of the soil-burying part also have corrosion-shaped holes and the thickness of the fully biodegradable mulching film strips is reduced.
Paving the film for 125 days: the strips of the oxidative biodegradation mulching film at the exposed part are fragmented and tightly attached to the ground surface, and the strips are free from strength and difficult to pick up. The soil covering of the fully biodegradable mulching film strips of the buried soil part is cleaned, and the fully biodegradable mulching film strips of the buried soil part are almost completely degraded and are hardly found.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A full biodegradable composite mulching film is characterized in that: the mulching film is composed of a middle oxidation biodegradation film strip and full biodegradation film strips on two sides, the width of each full biodegradation film strip is 5cm-20cm, and the oxidation biodegradation film strips and the full biodegradation film strips on the two sides are in 'vertical-horizontal-vertical' type composite lap joint.
2. The full biodegradable composite mulching film according to claim 1, wherein: the widths of the vertical, horizontal and vertical composite lap joint longitudinal structures are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020095076.8U CN212279122U (en) | 2020-01-16 | 2020-01-16 | Full-biodegradable composite mulching film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020095076.8U CN212279122U (en) | 2020-01-16 | 2020-01-16 | Full-biodegradable composite mulching film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212279122U true CN212279122U (en) | 2021-01-05 |
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ID=73932240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020095076.8U Expired - Fee Related CN212279122U (en) | 2020-01-16 | 2020-01-16 | Full-biodegradable composite mulching film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212279122U (en) |
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2020
- 2020-01-16 CN CN202020095076.8U patent/CN212279122U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210105 Termination date: 20220116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |